1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2016 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
36 #include <linux/interrupt.h>
38 #include <linux/tcp.h>
39 #include <linux/sctp.h>
40 #include <linux/pkt_sched.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/etherdevice.h>
46 #include <linux/ethtool.h>
48 #include <linux/if_vlan.h>
49 #include <linux/if_macvlan.h>
50 #include <linux/if_bridge.h>
51 #include <linux/prefetch.h>
52 #include <linux/bpf.h>
53 #include <linux/bpf_trace.h>
54 #include <linux/atomic.h>
55 #include <scsi/fc/fc_fcoe.h>
56 #include <net/udp_tunnel.h>
57 #include <net/pkt_cls.h>
58 #include <net/tc_act/tc_gact.h>
59 #include <net/tc_act/tc_mirred.h>
60 #include <net/vxlan.h>
64 #include "ixgbe_common.h"
65 #include "ixgbe_dcb_82599.h"
66 #include "ixgbe_sriov.h"
67 #include "ixgbe_model.h"
69 char ixgbe_driver_name
[] = "ixgbe";
70 static const char ixgbe_driver_string
[] =
71 "Intel(R) 10 Gigabit PCI Express Network Driver";
73 char ixgbe_default_device_descr
[] =
74 "Intel(R) 10 Gigabit Network Connection";
76 static char ixgbe_default_device_descr
[] =
77 "Intel(R) 10 Gigabit Network Connection";
79 #define DRV_VERSION "5.0.0-k"
80 const char ixgbe_driver_version
[] = DRV_VERSION
;
81 static const char ixgbe_copyright
[] =
82 "Copyright (c) 1999-2016 Intel Corporation.";
84 static const char ixgbe_overheat_msg
[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter";
86 static const struct ixgbe_info
*ixgbe_info_tbl
[] = {
87 [board_82598
] = &ixgbe_82598_info
,
88 [board_82599
] = &ixgbe_82599_info
,
89 [board_X540
] = &ixgbe_X540_info
,
90 [board_X550
] = &ixgbe_X550_info
,
91 [board_X550EM_x
] = &ixgbe_X550EM_x_info
,
92 [board_x550em_x_fw
] = &ixgbe_x550em_x_fw_info
,
93 [board_x550em_a
] = &ixgbe_x550em_a_info
,
94 [board_x550em_a_fw
] = &ixgbe_x550em_a_fw_info
,
97 /* ixgbe_pci_tbl - PCI Device ID Table
99 * Wildcard entries (PCI_ANY_ID) should come last
100 * Last entry must be all 0s
102 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
103 * Class, Class Mask, private data (not used) }
105 static const struct pci_device_id ixgbe_pci_tbl
[] = {
106 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598
), board_82598
},
107 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_DUAL_PORT
), board_82598
},
108 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_SINGLE_PORT
), board_82598
},
109 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT
), board_82598
},
110 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT2
), board_82598
},
111 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_CX4
), board_82598
},
112 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_CX4_DUAL_PORT
), board_82598
},
113 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_DA_DUAL_PORT
), board_82598
},
114 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
), board_82598
},
115 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_XF_LR
), board_82598
},
116 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_SFP_LOM
), board_82598
},
117 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_BX
), board_82598
},
118 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4
), board_82599
},
119 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_XAUI_LOM
), board_82599
},
120 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KR
), board_82599
},
121 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP
), board_82599
},
122 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_EM
), board_82599
},
123 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4_MEZZ
), board_82599
},
124 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_CX4
), board_82599
},
125 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_BACKPLANE_FCOE
), board_82599
},
126 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_FCOE
), board_82599
},
127 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_T3_LOM
), board_82599
},
128 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_COMBO_BACKPLANE
), board_82599
},
129 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540T
), board_X540
},
130 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_SF2
), board_82599
},
131 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_LS
), board_82599
},
132 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_QSFP_SF_QP
), board_82599
},
133 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599EN_SFP
), board_82599
},
134 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_SF_QP
), board_82599
},
135 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540T1
), board_X540
},
136 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550T
), board_X550
},
137 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550T1
), board_X550
},
138 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_KX4
), board_X550EM_x
},
139 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_XFI
), board_X550EM_x
},
140 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_KR
), board_X550EM_x
},
141 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_10G_T
), board_X550EM_x
},
142 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_SFP
), board_X550EM_x
},
143 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_1G_T
), board_x550em_x_fw
},
144 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_KR
), board_x550em_a
},
145 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_KR_L
), board_x550em_a
},
146 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SFP_N
), board_x550em_a
},
147 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SGMII
), board_x550em_a
},
148 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SGMII_L
), board_x550em_a
},
149 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_10G_T
), board_x550em_a
},
150 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SFP
), board_x550em_a
},
151 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_1G_T
), board_x550em_a_fw
},
152 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_1G_T_L
), board_x550em_a_fw
},
153 /* required last entry */
156 MODULE_DEVICE_TABLE(pci
, ixgbe_pci_tbl
);
158 #ifdef CONFIG_IXGBE_DCA
159 static int ixgbe_notify_dca(struct notifier_block
*, unsigned long event
,
161 static struct notifier_block dca_notifier
= {
162 .notifier_call
= ixgbe_notify_dca
,
168 #ifdef CONFIG_PCI_IOV
169 static unsigned int max_vfs
;
170 module_param(max_vfs
, uint
, 0);
171 MODULE_PARM_DESC(max_vfs
,
172 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
173 #endif /* CONFIG_PCI_IOV */
175 static unsigned int allow_unsupported_sfp
;
176 module_param(allow_unsupported_sfp
, uint
, 0);
177 MODULE_PARM_DESC(allow_unsupported_sfp
,
178 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
180 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
181 static int debug
= -1;
182 module_param(debug
, int, 0);
183 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
185 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
186 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
187 MODULE_LICENSE("GPL");
188 MODULE_VERSION(DRV_VERSION
);
190 static struct workqueue_struct
*ixgbe_wq
;
192 static bool ixgbe_check_cfg_remove(struct ixgbe_hw
*hw
, struct pci_dev
*pdev
);
193 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter
*);
195 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter
*adapter
,
198 struct pci_dev
*parent_dev
;
199 struct pci_bus
*parent_bus
;
201 parent_bus
= adapter
->pdev
->bus
->parent
;
205 parent_dev
= parent_bus
->self
;
209 if (!pci_is_pcie(parent_dev
))
212 pcie_capability_read_word(parent_dev
, reg
, value
);
213 if (*value
== IXGBE_FAILED_READ_CFG_WORD
&&
214 ixgbe_check_cfg_remove(&adapter
->hw
, parent_dev
))
219 static s32
ixgbe_get_parent_bus_info(struct ixgbe_adapter
*adapter
)
221 struct ixgbe_hw
*hw
= &adapter
->hw
;
225 hw
->bus
.type
= ixgbe_bus_type_pci_express
;
227 /* Get the negotiated link width and speed from PCI config space of the
228 * parent, as this device is behind a switch
230 err
= ixgbe_read_pci_cfg_word_parent(adapter
, 18, &link_status
);
232 /* assume caller will handle error case */
236 hw
->bus
.width
= ixgbe_convert_bus_width(link_status
);
237 hw
->bus
.speed
= ixgbe_convert_bus_speed(link_status
);
243 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent
244 * @hw: hw specific details
246 * This function is used by probe to determine whether a device's PCI-Express
247 * bandwidth details should be gathered from the parent bus instead of from the
248 * device. Used to ensure that various locations all have the correct device ID
251 static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw
*hw
)
253 switch (hw
->device_id
) {
254 case IXGBE_DEV_ID_82599_SFP_SF_QP
:
255 case IXGBE_DEV_ID_82599_QSFP_SF_QP
:
262 static void ixgbe_check_minimum_link(struct ixgbe_adapter
*adapter
,
265 struct ixgbe_hw
*hw
= &adapter
->hw
;
267 enum pci_bus_speed speed
= PCI_SPEED_UNKNOWN
;
268 enum pcie_link_width width
= PCIE_LNK_WIDTH_UNKNOWN
;
269 struct pci_dev
*pdev
;
271 /* Some devices are not connected over PCIe and thus do not negotiate
272 * speed. These devices do not have valid bus info, and thus any report
273 * we generate may not be correct.
275 if (hw
->bus
.type
== ixgbe_bus_type_internal
)
278 /* determine whether to use the parent device */
279 if (ixgbe_pcie_from_parent(&adapter
->hw
))
280 pdev
= adapter
->pdev
->bus
->parent
->self
;
282 pdev
= adapter
->pdev
;
284 if (pcie_get_minimum_link(pdev
, &speed
, &width
) ||
285 speed
== PCI_SPEED_UNKNOWN
|| width
== PCIE_LNK_WIDTH_UNKNOWN
) {
286 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
291 case PCIE_SPEED_2_5GT
:
292 /* 8b/10b encoding reduces max throughput by 20% */
295 case PCIE_SPEED_5_0GT
:
296 /* 8b/10b encoding reduces max throughput by 20% */
299 case PCIE_SPEED_8_0GT
:
300 /* 128b/130b encoding reduces throughput by less than 2% */
304 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
308 e_dev_info("PCI Express bandwidth of %dGT/s available\n",
310 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
311 (speed
== PCIE_SPEED_8_0GT
? "8.0GT/s" :
312 speed
== PCIE_SPEED_5_0GT
? "5.0GT/s" :
313 speed
== PCIE_SPEED_2_5GT
? "2.5GT/s" :
316 (speed
== PCIE_SPEED_2_5GT
? "20%" :
317 speed
== PCIE_SPEED_5_0GT
? "20%" :
318 speed
== PCIE_SPEED_8_0GT
? "<2%" :
321 if (max_gts
< expected_gts
) {
322 e_dev_warn("This is not sufficient for optimal performance of this card.\n");
323 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
325 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
329 static void ixgbe_service_event_schedule(struct ixgbe_adapter
*adapter
)
331 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
) &&
332 !test_bit(__IXGBE_REMOVING
, &adapter
->state
) &&
333 !test_and_set_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
))
334 queue_work(ixgbe_wq
, &adapter
->service_task
);
337 static void ixgbe_remove_adapter(struct ixgbe_hw
*hw
)
339 struct ixgbe_adapter
*adapter
= hw
->back
;
344 e_dev_err("Adapter removed\n");
345 if (test_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
))
346 ixgbe_service_event_schedule(adapter
);
349 static void ixgbe_check_remove(struct ixgbe_hw
*hw
, u32 reg
)
353 /* The following check not only optimizes a bit by not
354 * performing a read on the status register when the
355 * register just read was a status register read that
356 * returned IXGBE_FAILED_READ_REG. It also blocks any
357 * potential recursion.
359 if (reg
== IXGBE_STATUS
) {
360 ixgbe_remove_adapter(hw
);
363 value
= ixgbe_read_reg(hw
, IXGBE_STATUS
);
364 if (value
== IXGBE_FAILED_READ_REG
)
365 ixgbe_remove_adapter(hw
);
369 * ixgbe_read_reg - Read from device register
370 * @hw: hw specific details
371 * @reg: offset of register to read
373 * Returns : value read or IXGBE_FAILED_READ_REG if removed
375 * This function is used to read device registers. It checks for device
376 * removal by confirming any read that returns all ones by checking the
377 * status register value for all ones. This function avoids reading from
378 * the hardware if a removal was previously detected in which case it
379 * returns IXGBE_FAILED_READ_REG (all ones).
381 u32
ixgbe_read_reg(struct ixgbe_hw
*hw
, u32 reg
)
383 u8 __iomem
*reg_addr
= ACCESS_ONCE(hw
->hw_addr
);
386 if (ixgbe_removed(reg_addr
))
387 return IXGBE_FAILED_READ_REG
;
388 if (unlikely(hw
->phy
.nw_mng_if_sel
&
389 IXGBE_NW_MNG_IF_SEL_ENABLE_10_100M
)) {
390 struct ixgbe_adapter
*adapter
;
393 for (i
= 0; i
< 200; ++i
) {
394 value
= readl(reg_addr
+ IXGBE_MAC_SGMII_BUSY
);
396 goto writes_completed
;
397 if (value
== IXGBE_FAILED_READ_REG
) {
398 ixgbe_remove_adapter(hw
);
399 return IXGBE_FAILED_READ_REG
;
405 e_warn(hw
, "register writes incomplete %08x\n", value
);
409 value
= readl(reg_addr
+ reg
);
410 if (unlikely(value
== IXGBE_FAILED_READ_REG
))
411 ixgbe_check_remove(hw
, reg
);
415 static bool ixgbe_check_cfg_remove(struct ixgbe_hw
*hw
, struct pci_dev
*pdev
)
419 pci_read_config_word(pdev
, PCI_VENDOR_ID
, &value
);
420 if (value
== IXGBE_FAILED_READ_CFG_WORD
) {
421 ixgbe_remove_adapter(hw
);
427 u16
ixgbe_read_pci_cfg_word(struct ixgbe_hw
*hw
, u32 reg
)
429 struct ixgbe_adapter
*adapter
= hw
->back
;
432 if (ixgbe_removed(hw
->hw_addr
))
433 return IXGBE_FAILED_READ_CFG_WORD
;
434 pci_read_config_word(adapter
->pdev
, reg
, &value
);
435 if (value
== IXGBE_FAILED_READ_CFG_WORD
&&
436 ixgbe_check_cfg_remove(hw
, adapter
->pdev
))
437 return IXGBE_FAILED_READ_CFG_WORD
;
441 #ifdef CONFIG_PCI_IOV
442 static u32
ixgbe_read_pci_cfg_dword(struct ixgbe_hw
*hw
, u32 reg
)
444 struct ixgbe_adapter
*adapter
= hw
->back
;
447 if (ixgbe_removed(hw
->hw_addr
))
448 return IXGBE_FAILED_READ_CFG_DWORD
;
449 pci_read_config_dword(adapter
->pdev
, reg
, &value
);
450 if (value
== IXGBE_FAILED_READ_CFG_DWORD
&&
451 ixgbe_check_cfg_remove(hw
, adapter
->pdev
))
452 return IXGBE_FAILED_READ_CFG_DWORD
;
455 #endif /* CONFIG_PCI_IOV */
457 void ixgbe_write_pci_cfg_word(struct ixgbe_hw
*hw
, u32 reg
, u16 value
)
459 struct ixgbe_adapter
*adapter
= hw
->back
;
461 if (ixgbe_removed(hw
->hw_addr
))
463 pci_write_config_word(adapter
->pdev
, reg
, value
);
466 static void ixgbe_service_event_complete(struct ixgbe_adapter
*adapter
)
468 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
));
470 /* flush memory to make sure state is correct before next watchdog */
471 smp_mb__before_atomic();
472 clear_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
);
475 struct ixgbe_reg_info
{
480 static const struct ixgbe_reg_info ixgbe_reg_info_tbl
[] = {
482 /* General Registers */
483 {IXGBE_CTRL
, "CTRL"},
484 {IXGBE_STATUS
, "STATUS"},
485 {IXGBE_CTRL_EXT
, "CTRL_EXT"},
487 /* Interrupt Registers */
488 {IXGBE_EICR
, "EICR"},
491 {IXGBE_SRRCTL(0), "SRRCTL"},
492 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
493 {IXGBE_RDLEN(0), "RDLEN"},
494 {IXGBE_RDH(0), "RDH"},
495 {IXGBE_RDT(0), "RDT"},
496 {IXGBE_RXDCTL(0), "RXDCTL"},
497 {IXGBE_RDBAL(0), "RDBAL"},
498 {IXGBE_RDBAH(0), "RDBAH"},
501 {IXGBE_TDBAL(0), "TDBAL"},
502 {IXGBE_TDBAH(0), "TDBAH"},
503 {IXGBE_TDLEN(0), "TDLEN"},
504 {IXGBE_TDH(0), "TDH"},
505 {IXGBE_TDT(0), "TDT"},
506 {IXGBE_TXDCTL(0), "TXDCTL"},
508 /* List Terminator */
514 * ixgbe_regdump - register printout routine
516 static void ixgbe_regdump(struct ixgbe_hw
*hw
, struct ixgbe_reg_info
*reginfo
)
522 switch (reginfo
->ofs
) {
523 case IXGBE_SRRCTL(0):
524 for (i
= 0; i
< 64; i
++)
525 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_SRRCTL(i
));
527 case IXGBE_DCA_RXCTRL(0):
528 for (i
= 0; i
< 64; i
++)
529 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_DCA_RXCTRL(i
));
532 for (i
= 0; i
< 64; i
++)
533 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDLEN(i
));
536 for (i
= 0; i
< 64; i
++)
537 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDH(i
));
540 for (i
= 0; i
< 64; i
++)
541 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDT(i
));
543 case IXGBE_RXDCTL(0):
544 for (i
= 0; i
< 64; i
++)
545 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RXDCTL(i
));
548 for (i
= 0; i
< 64; i
++)
549 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDBAL(i
));
552 for (i
= 0; i
< 64; i
++)
553 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDBAH(i
));
556 for (i
= 0; i
< 64; i
++)
557 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDBAL(i
));
560 for (i
= 0; i
< 64; i
++)
561 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDBAH(i
));
564 for (i
= 0; i
< 64; i
++)
565 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDLEN(i
));
568 for (i
= 0; i
< 64; i
++)
569 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDH(i
));
572 for (i
= 0; i
< 64; i
++)
573 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDT(i
));
575 case IXGBE_TXDCTL(0):
576 for (i
= 0; i
< 64; i
++)
577 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TXDCTL(i
));
580 pr_info("%-15s %08x\n",
581 reginfo
->name
, IXGBE_READ_REG(hw
, reginfo
->ofs
));
591 snprintf(rname
, 16, "%s[%d-%d]", reginfo
->name
, i
, i
+ 7);
592 for (j
= 0; j
< 8; j
++)
593 p
+= sprintf(p
, " %08x", regs
[i
++]);
594 pr_err("%-15s%s\n", rname
, buf
);
599 static void ixgbe_print_buffer(struct ixgbe_ring
*ring
, int n
)
601 struct ixgbe_tx_buffer
*tx_buffer
;
603 tx_buffer
= &ring
->tx_buffer_info
[ring
->next_to_clean
];
604 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
605 n
, ring
->next_to_use
, ring
->next_to_clean
,
606 (u64
)dma_unmap_addr(tx_buffer
, dma
),
607 dma_unmap_len(tx_buffer
, len
),
608 tx_buffer
->next_to_watch
,
609 (u64
)tx_buffer
->time_stamp
);
613 * ixgbe_dump - Print registers, tx-rings and rx-rings
615 static void ixgbe_dump(struct ixgbe_adapter
*adapter
)
617 struct net_device
*netdev
= adapter
->netdev
;
618 struct ixgbe_hw
*hw
= &adapter
->hw
;
619 struct ixgbe_reg_info
*reginfo
;
621 struct ixgbe_ring
*ring
;
622 struct ixgbe_tx_buffer
*tx_buffer
;
623 union ixgbe_adv_tx_desc
*tx_desc
;
624 struct my_u0
{ u64 a
; u64 b
; } *u0
;
625 struct ixgbe_ring
*rx_ring
;
626 union ixgbe_adv_rx_desc
*rx_desc
;
627 struct ixgbe_rx_buffer
*rx_buffer_info
;
630 if (!netif_msg_hw(adapter
))
633 /* Print netdevice Info */
635 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
636 pr_info("Device Name state "
638 pr_info("%-15s %016lX %016lX\n",
641 dev_trans_start(netdev
));
644 /* Print Registers */
645 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
646 pr_info(" Register Name Value\n");
647 for (reginfo
= (struct ixgbe_reg_info
*)ixgbe_reg_info_tbl
;
648 reginfo
->name
; reginfo
++) {
649 ixgbe_regdump(hw
, reginfo
);
652 /* Print TX Ring Summary */
653 if (!netdev
|| !netif_running(netdev
))
656 dev_info(&adapter
->pdev
->dev
, "TX Rings Summary\n");
657 pr_info(" %s %s %s %s\n",
658 "Queue [NTU] [NTC] [bi(ntc)->dma ]",
659 "leng", "ntw", "timestamp");
660 for (n
= 0; n
< adapter
->num_tx_queues
; n
++) {
661 ring
= adapter
->tx_ring
[n
];
662 ixgbe_print_buffer(ring
, n
);
665 for (n
= 0; n
< adapter
->num_xdp_queues
; n
++) {
666 ring
= adapter
->xdp_ring
[n
];
667 ixgbe_print_buffer(ring
, n
);
671 if (!netif_msg_tx_done(adapter
))
672 goto rx_ring_summary
;
674 dev_info(&adapter
->pdev
->dev
, "TX Rings Dump\n");
676 /* Transmit Descriptor Formats
678 * 82598 Advanced Transmit Descriptor
679 * +--------------------------------------------------------------+
680 * 0 | Buffer Address [63:0] |
681 * +--------------------------------------------------------------+
682 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
683 * +--------------------------------------------------------------+
684 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
686 * 82598 Advanced Transmit Descriptor (Write-Back Format)
687 * +--------------------------------------------------------------+
689 * +--------------------------------------------------------------+
690 * 8 | RSV | STA | NXTSEQ |
691 * +--------------------------------------------------------------+
694 * 82599+ Advanced Transmit Descriptor
695 * +--------------------------------------------------------------+
696 * 0 | Buffer Address [63:0] |
697 * +--------------------------------------------------------------+
698 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
699 * +--------------------------------------------------------------+
700 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
702 * 82599+ Advanced Transmit Descriptor (Write-Back Format)
703 * +--------------------------------------------------------------+
705 * +--------------------------------------------------------------+
706 * 8 | RSV | STA | RSV |
707 * +--------------------------------------------------------------+
711 for (n
= 0; n
< adapter
->num_tx_queues
; n
++) {
712 ring
= adapter
->tx_ring
[n
];
713 pr_info("------------------------------------\n");
714 pr_info("TX QUEUE INDEX = %d\n", ring
->queue_index
);
715 pr_info("------------------------------------\n");
716 pr_info("%s%s %s %s %s %s\n",
717 "T [desc] [address 63:0 ] ",
718 "[PlPOIdStDDt Ln] [bi->dma ] ",
719 "leng", "ntw", "timestamp", "bi->skb");
721 for (i
= 0; ring
->desc
&& (i
< ring
->count
); i
++) {
722 tx_desc
= IXGBE_TX_DESC(ring
, i
);
723 tx_buffer
= &ring
->tx_buffer_info
[i
];
724 u0
= (struct my_u0
*)tx_desc
;
725 if (dma_unmap_len(tx_buffer
, len
) > 0) {
726 const char *ring_desc
;
728 if (i
== ring
->next_to_use
&&
729 i
== ring
->next_to_clean
)
730 ring_desc
= " NTC/U";
731 else if (i
== ring
->next_to_use
)
733 else if (i
== ring
->next_to_clean
)
737 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s",
741 (u64
)dma_unmap_addr(tx_buffer
, dma
),
742 dma_unmap_len(tx_buffer
, len
),
743 tx_buffer
->next_to_watch
,
744 (u64
)tx_buffer
->time_stamp
,
748 if (netif_msg_pktdata(adapter
) &&
750 print_hex_dump(KERN_INFO
, "",
751 DUMP_PREFIX_ADDRESS
, 16, 1,
752 tx_buffer
->skb
->data
,
753 dma_unmap_len(tx_buffer
, len
),
759 /* Print RX Rings Summary */
761 dev_info(&adapter
->pdev
->dev
, "RX Rings Summary\n");
762 pr_info("Queue [NTU] [NTC]\n");
763 for (n
= 0; n
< adapter
->num_rx_queues
; n
++) {
764 rx_ring
= adapter
->rx_ring
[n
];
765 pr_info("%5d %5X %5X\n",
766 n
, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
770 if (!netif_msg_rx_status(adapter
))
773 dev_info(&adapter
->pdev
->dev
, "RX Rings Dump\n");
775 /* Receive Descriptor Formats
777 * 82598 Advanced Receive Descriptor (Read) Format
779 * +-----------------------------------------------------+
780 * 0 | Packet Buffer Address [63:1] |A0/NSE|
781 * +----------------------------------------------+------+
782 * 8 | Header Buffer Address [63:1] | DD |
783 * +-----------------------------------------------------+
786 * 82598 Advanced Receive Descriptor (Write-Back) Format
788 * 63 48 47 32 31 30 21 20 16 15 4 3 0
789 * +------------------------------------------------------+
790 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
791 * | Packet | IP | | | | Type | Type |
792 * | Checksum | Ident | | | | | |
793 * +------------------------------------------------------+
794 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
795 * +------------------------------------------------------+
796 * 63 48 47 32 31 20 19 0
798 * 82599+ Advanced Receive Descriptor (Read) Format
800 * +-----------------------------------------------------+
801 * 0 | Packet Buffer Address [63:1] |A0/NSE|
802 * +----------------------------------------------+------+
803 * 8 | Header Buffer Address [63:1] | DD |
804 * +-----------------------------------------------------+
807 * 82599+ Advanced Receive Descriptor (Write-Back) Format
809 * 63 48 47 32 31 30 21 20 17 16 4 3 0
810 * +------------------------------------------------------+
811 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
812 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
813 * |/ Flow Dir Flt ID | | | | | |
814 * +------------------------------------------------------+
815 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
816 * +------------------------------------------------------+
817 * 63 48 47 32 31 20 19 0
820 for (n
= 0; n
< adapter
->num_rx_queues
; n
++) {
821 rx_ring
= adapter
->rx_ring
[n
];
822 pr_info("------------------------------------\n");
823 pr_info("RX QUEUE INDEX = %d\n", rx_ring
->queue_index
);
824 pr_info("------------------------------------\n");
826 "R [desc] [ PktBuf A0] ",
827 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
828 "<-- Adv Rx Read format");
830 "RWB[desc] [PcsmIpSHl PtRs] ",
831 "[vl er S cks ln] ---------------- [bi->skb ] ",
832 "<-- Adv Rx Write-Back format");
834 for (i
= 0; i
< rx_ring
->count
; i
++) {
835 const char *ring_desc
;
837 if (i
== rx_ring
->next_to_use
)
839 else if (i
== rx_ring
->next_to_clean
)
844 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
845 rx_desc
= IXGBE_RX_DESC(rx_ring
, i
);
846 u0
= (struct my_u0
*)rx_desc
;
847 if (rx_desc
->wb
.upper
.length
) {
848 /* Descriptor Done */
849 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n",
856 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n",
860 (u64
)rx_buffer_info
->dma
,
864 if (netif_msg_pktdata(adapter
) &&
865 rx_buffer_info
->dma
) {
866 print_hex_dump(KERN_INFO
, "",
867 DUMP_PREFIX_ADDRESS
, 16, 1,
868 page_address(rx_buffer_info
->page
) +
869 rx_buffer_info
->page_offset
,
870 ixgbe_rx_bufsz(rx_ring
), true);
877 static void ixgbe_release_hw_control(struct ixgbe_adapter
*adapter
)
881 /* Let firmware take over control of h/w */
882 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
883 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
884 ctrl_ext
& ~IXGBE_CTRL_EXT_DRV_LOAD
);
887 static void ixgbe_get_hw_control(struct ixgbe_adapter
*adapter
)
891 /* Let firmware know the driver has taken over */
892 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
893 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
894 ctrl_ext
| IXGBE_CTRL_EXT_DRV_LOAD
);
898 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
899 * @adapter: pointer to adapter struct
900 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
901 * @queue: queue to map the corresponding interrupt to
902 * @msix_vector: the vector to map to the corresponding queue
905 static void ixgbe_set_ivar(struct ixgbe_adapter
*adapter
, s8 direction
,
906 u8 queue
, u8 msix_vector
)
909 struct ixgbe_hw
*hw
= &adapter
->hw
;
910 switch (hw
->mac
.type
) {
911 case ixgbe_mac_82598EB
:
912 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
915 index
= (((direction
* 64) + queue
) >> 2) & 0x1F;
916 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(index
));
917 ivar
&= ~(0xFF << (8 * (queue
& 0x3)));
918 ivar
|= (msix_vector
<< (8 * (queue
& 0x3)));
919 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(index
), ivar
);
921 case ixgbe_mac_82599EB
:
924 case ixgbe_mac_X550EM_x
:
925 case ixgbe_mac_x550em_a
:
926 if (direction
== -1) {
928 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
929 index
= ((queue
& 1) * 8);
930 ivar
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_IVAR_MISC
);
931 ivar
&= ~(0xFF << index
);
932 ivar
|= (msix_vector
<< index
);
933 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_IVAR_MISC
, ivar
);
936 /* tx or rx causes */
937 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
938 index
= ((16 * (queue
& 1)) + (8 * direction
));
939 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(queue
>> 1));
940 ivar
&= ~(0xFF << index
);
941 ivar
|= (msix_vector
<< index
);
942 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(queue
>> 1), ivar
);
950 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter
*adapter
,
955 switch (adapter
->hw
.mac
.type
) {
956 case ixgbe_mac_82598EB
:
957 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
958 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS
, mask
);
960 case ixgbe_mac_82599EB
:
963 case ixgbe_mac_X550EM_x
:
964 case ixgbe_mac_x550em_a
:
965 mask
= (qmask
& 0xFFFFFFFF);
966 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(0), mask
);
967 mask
= (qmask
>> 32);
968 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(1), mask
);
975 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter
*adapter
)
977 struct ixgbe_hw
*hw
= &adapter
->hw
;
978 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
982 if ((hw
->fc
.current_mode
!= ixgbe_fc_full
) &&
983 (hw
->fc
.current_mode
!= ixgbe_fc_rx_pause
))
986 switch (hw
->mac
.type
) {
987 case ixgbe_mac_82598EB
:
988 data
= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXC
);
991 data
= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXCNT
);
993 hwstats
->lxoffrxc
+= data
;
995 /* refill credits (no tx hang) if we received xoff */
999 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1000 clear_bit(__IXGBE_HANG_CHECK_ARMED
,
1001 &adapter
->tx_ring
[i
]->state
);
1003 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
1004 clear_bit(__IXGBE_HANG_CHECK_ARMED
,
1005 &adapter
->xdp_ring
[i
]->state
);
1008 static void ixgbe_update_xoff_received(struct ixgbe_adapter
*adapter
)
1010 struct ixgbe_hw
*hw
= &adapter
->hw
;
1011 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
1015 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
1017 if (adapter
->ixgbe_ieee_pfc
)
1018 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
1020 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) || !pfc_en
) {
1021 ixgbe_update_xoff_rx_lfc(adapter
);
1025 /* update stats for each tc, only valid with PFC enabled */
1026 for (i
= 0; i
< MAX_TX_PACKET_BUFFERS
; i
++) {
1029 switch (hw
->mac
.type
) {
1030 case ixgbe_mac_82598EB
:
1031 pxoffrxc
= IXGBE_READ_REG(hw
, IXGBE_PXOFFRXC(i
));
1034 pxoffrxc
= IXGBE_READ_REG(hw
, IXGBE_PXOFFRXCNT(i
));
1036 hwstats
->pxoffrxc
[i
] += pxoffrxc
;
1037 /* Get the TC for given UP */
1038 tc
= netdev_get_prio_tc_map(adapter
->netdev
, i
);
1039 xoff
[tc
] += pxoffrxc
;
1042 /* disarm tx queues that have received xoff frames */
1043 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1044 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
1046 tc
= tx_ring
->dcb_tc
;
1048 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &tx_ring
->state
);
1051 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++) {
1052 struct ixgbe_ring
*xdp_ring
= adapter
->xdp_ring
[i
];
1054 tc
= xdp_ring
->dcb_tc
;
1056 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &xdp_ring
->state
);
1060 static u64
ixgbe_get_tx_completed(struct ixgbe_ring
*ring
)
1062 return ring
->stats
.packets
;
1065 static u64
ixgbe_get_tx_pending(struct ixgbe_ring
*ring
)
1067 struct ixgbe_adapter
*adapter
;
1068 struct ixgbe_hw
*hw
;
1071 if (ring
->l2_accel_priv
)
1072 adapter
= ring
->l2_accel_priv
->real_adapter
;
1074 adapter
= netdev_priv(ring
->netdev
);
1077 head
= IXGBE_READ_REG(hw
, IXGBE_TDH(ring
->reg_idx
));
1078 tail
= IXGBE_READ_REG(hw
, IXGBE_TDT(ring
->reg_idx
));
1081 return (head
< tail
) ?
1082 tail
- head
: (tail
+ ring
->count
- head
);
1087 static inline bool ixgbe_check_tx_hang(struct ixgbe_ring
*tx_ring
)
1089 u32 tx_done
= ixgbe_get_tx_completed(tx_ring
);
1090 u32 tx_done_old
= tx_ring
->tx_stats
.tx_done_old
;
1091 u32 tx_pending
= ixgbe_get_tx_pending(tx_ring
);
1093 clear_check_for_tx_hang(tx_ring
);
1096 * Check for a hung queue, but be thorough. This verifies
1097 * that a transmit has been completed since the previous
1098 * check AND there is at least one packet pending. The
1099 * ARMED bit is set to indicate a potential hang. The
1100 * bit is cleared if a pause frame is received to remove
1101 * false hang detection due to PFC or 802.3x frames. By
1102 * requiring this to fail twice we avoid races with
1103 * pfc clearing the ARMED bit and conditions where we
1104 * run the check_tx_hang logic with a transmit completion
1105 * pending but without time to complete it yet.
1107 if (tx_done_old
== tx_done
&& tx_pending
)
1108 /* make sure it is true for two checks in a row */
1109 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED
,
1111 /* update completed stats and continue */
1112 tx_ring
->tx_stats
.tx_done_old
= tx_done
;
1113 /* reset the countdown */
1114 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &tx_ring
->state
);
1120 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
1121 * @adapter: driver private struct
1123 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter
*adapter
)
1126 /* Do the reset outside of interrupt context */
1127 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1128 set_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
);
1129 e_warn(drv
, "initiating reset due to tx timeout\n");
1130 ixgbe_service_event_schedule(adapter
);
1135 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate
1137 static int ixgbe_tx_maxrate(struct net_device
*netdev
,
1138 int queue_index
, u32 maxrate
)
1140 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1141 struct ixgbe_hw
*hw
= &adapter
->hw
;
1142 u32 bcnrc_val
= ixgbe_link_mbps(adapter
);
1147 /* Calculate the rate factor values to set */
1148 bcnrc_val
<<= IXGBE_RTTBCNRC_RF_INT_SHIFT
;
1149 bcnrc_val
/= maxrate
;
1151 /* clear everything but the rate factor */
1152 bcnrc_val
&= IXGBE_RTTBCNRC_RF_INT_MASK
|
1153 IXGBE_RTTBCNRC_RF_DEC_MASK
;
1155 /* enable the rate scheduler */
1156 bcnrc_val
|= IXGBE_RTTBCNRC_RS_ENA
;
1158 IXGBE_WRITE_REG(hw
, IXGBE_RTTDQSEL
, queue_index
);
1159 IXGBE_WRITE_REG(hw
, IXGBE_RTTBCNRC
, bcnrc_val
);
1165 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
1166 * @q_vector: structure containing interrupt and ring information
1167 * @tx_ring: tx ring to clean
1168 * @napi_budget: Used to determine if we are in netpoll
1170 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector
*q_vector
,
1171 struct ixgbe_ring
*tx_ring
, int napi_budget
)
1173 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1174 struct ixgbe_tx_buffer
*tx_buffer
;
1175 union ixgbe_adv_tx_desc
*tx_desc
;
1176 unsigned int total_bytes
= 0, total_packets
= 0;
1177 unsigned int budget
= q_vector
->tx
.work_limit
;
1178 unsigned int i
= tx_ring
->next_to_clean
;
1180 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
1183 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
1184 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
1185 i
-= tx_ring
->count
;
1188 union ixgbe_adv_tx_desc
*eop_desc
= tx_buffer
->next_to_watch
;
1190 /* if next_to_watch is not set then there is no work pending */
1194 /* prevent any other reads prior to eop_desc */
1195 read_barrier_depends();
1197 /* if DD is not set pending work has not been completed */
1198 if (!(eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)))
1201 /* clear next_to_watch to prevent false hangs */
1202 tx_buffer
->next_to_watch
= NULL
;
1204 /* update the statistics for this packet */
1205 total_bytes
+= tx_buffer
->bytecount
;
1206 total_packets
+= tx_buffer
->gso_segs
;
1209 if (ring_is_xdp(tx_ring
))
1210 page_frag_free(tx_buffer
->data
);
1212 napi_consume_skb(tx_buffer
->skb
, napi_budget
);
1214 /* unmap skb header data */
1215 dma_unmap_single(tx_ring
->dev
,
1216 dma_unmap_addr(tx_buffer
, dma
),
1217 dma_unmap_len(tx_buffer
, len
),
1220 /* clear tx_buffer data */
1221 dma_unmap_len_set(tx_buffer
, len
, 0);
1223 /* unmap remaining buffers */
1224 while (tx_desc
!= eop_desc
) {
1229 i
-= tx_ring
->count
;
1230 tx_buffer
= tx_ring
->tx_buffer_info
;
1231 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
1234 /* unmap any remaining paged data */
1235 if (dma_unmap_len(tx_buffer
, len
)) {
1236 dma_unmap_page(tx_ring
->dev
,
1237 dma_unmap_addr(tx_buffer
, dma
),
1238 dma_unmap_len(tx_buffer
, len
),
1240 dma_unmap_len_set(tx_buffer
, len
, 0);
1244 /* move us one more past the eop_desc for start of next pkt */
1249 i
-= tx_ring
->count
;
1250 tx_buffer
= tx_ring
->tx_buffer_info
;
1251 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
1254 /* issue prefetch for next Tx descriptor */
1257 /* update budget accounting */
1259 } while (likely(budget
));
1261 i
+= tx_ring
->count
;
1262 tx_ring
->next_to_clean
= i
;
1263 u64_stats_update_begin(&tx_ring
->syncp
);
1264 tx_ring
->stats
.bytes
+= total_bytes
;
1265 tx_ring
->stats
.packets
+= total_packets
;
1266 u64_stats_update_end(&tx_ring
->syncp
);
1267 q_vector
->tx
.total_bytes
+= total_bytes
;
1268 q_vector
->tx
.total_packets
+= total_packets
;
1270 if (check_for_tx_hang(tx_ring
) && ixgbe_check_tx_hang(tx_ring
)) {
1271 /* schedule immediate reset if we believe we hung */
1272 struct ixgbe_hw
*hw
= &adapter
->hw
;
1273 e_err(drv
, "Detected Tx Unit Hang %s\n"
1275 " TDH, TDT <%x>, <%x>\n"
1276 " next_to_use <%x>\n"
1277 " next_to_clean <%x>\n"
1278 "tx_buffer_info[next_to_clean]\n"
1279 " time_stamp <%lx>\n"
1281 ring_is_xdp(tx_ring
) ? "(XDP)" : "",
1282 tx_ring
->queue_index
,
1283 IXGBE_READ_REG(hw
, IXGBE_TDH(tx_ring
->reg_idx
)),
1284 IXGBE_READ_REG(hw
, IXGBE_TDT(tx_ring
->reg_idx
)),
1285 tx_ring
->next_to_use
, i
,
1286 tx_ring
->tx_buffer_info
[i
].time_stamp
, jiffies
);
1288 if (!ring_is_xdp(tx_ring
))
1289 netif_stop_subqueue(tx_ring
->netdev
,
1290 tx_ring
->queue_index
);
1293 "tx hang %d detected on queue %d, resetting adapter\n",
1294 adapter
->tx_timeout_count
+ 1, tx_ring
->queue_index
);
1296 /* schedule immediate reset if we believe we hung */
1297 ixgbe_tx_timeout_reset(adapter
);
1299 /* the adapter is about to reset, no point in enabling stuff */
1303 if (ring_is_xdp(tx_ring
))
1306 netdev_tx_completed_queue(txring_txq(tx_ring
),
1307 total_packets
, total_bytes
);
1309 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
1310 if (unlikely(total_packets
&& netif_carrier_ok(tx_ring
->netdev
) &&
1311 (ixgbe_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
1312 /* Make sure that anybody stopping the queue after this
1313 * sees the new next_to_clean.
1316 if (__netif_subqueue_stopped(tx_ring
->netdev
,
1317 tx_ring
->queue_index
)
1318 && !test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1319 netif_wake_subqueue(tx_ring
->netdev
,
1320 tx_ring
->queue_index
);
1321 ++tx_ring
->tx_stats
.restart_queue
;
1328 #ifdef CONFIG_IXGBE_DCA
1329 static void ixgbe_update_tx_dca(struct ixgbe_adapter
*adapter
,
1330 struct ixgbe_ring
*tx_ring
,
1333 struct ixgbe_hw
*hw
= &adapter
->hw
;
1337 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1338 txctrl
= dca3_get_tag(tx_ring
->dev
, cpu
);
1340 switch (hw
->mac
.type
) {
1341 case ixgbe_mac_82598EB
:
1342 reg_offset
= IXGBE_DCA_TXCTRL(tx_ring
->reg_idx
);
1344 case ixgbe_mac_82599EB
:
1345 case ixgbe_mac_X540
:
1346 reg_offset
= IXGBE_DCA_TXCTRL_82599(tx_ring
->reg_idx
);
1347 txctrl
<<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599
;
1350 /* for unknown hardware do not write register */
1355 * We can enable relaxed ordering for reads, but not writes when
1356 * DCA is enabled. This is due to a known issue in some chipsets
1357 * which will cause the DCA tag to be cleared.
1359 txctrl
|= IXGBE_DCA_TXCTRL_DESC_RRO_EN
|
1360 IXGBE_DCA_TXCTRL_DATA_RRO_EN
|
1361 IXGBE_DCA_TXCTRL_DESC_DCA_EN
;
1363 IXGBE_WRITE_REG(hw
, reg_offset
, txctrl
);
1366 static void ixgbe_update_rx_dca(struct ixgbe_adapter
*adapter
,
1367 struct ixgbe_ring
*rx_ring
,
1370 struct ixgbe_hw
*hw
= &adapter
->hw
;
1372 u8 reg_idx
= rx_ring
->reg_idx
;
1374 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1375 rxctrl
= dca3_get_tag(rx_ring
->dev
, cpu
);
1377 switch (hw
->mac
.type
) {
1378 case ixgbe_mac_82599EB
:
1379 case ixgbe_mac_X540
:
1380 rxctrl
<<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599
;
1387 * We can enable relaxed ordering for reads, but not writes when
1388 * DCA is enabled. This is due to a known issue in some chipsets
1389 * which will cause the DCA tag to be cleared.
1391 rxctrl
|= IXGBE_DCA_RXCTRL_DESC_RRO_EN
|
1392 IXGBE_DCA_RXCTRL_DATA_DCA_EN
|
1393 IXGBE_DCA_RXCTRL_DESC_DCA_EN
;
1395 IXGBE_WRITE_REG(hw
, IXGBE_DCA_RXCTRL(reg_idx
), rxctrl
);
1398 static void ixgbe_update_dca(struct ixgbe_q_vector
*q_vector
)
1400 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1401 struct ixgbe_ring
*ring
;
1402 int cpu
= get_cpu();
1404 if (q_vector
->cpu
== cpu
)
1407 ixgbe_for_each_ring(ring
, q_vector
->tx
)
1408 ixgbe_update_tx_dca(adapter
, ring
, cpu
);
1410 ixgbe_for_each_ring(ring
, q_vector
->rx
)
1411 ixgbe_update_rx_dca(adapter
, ring
, cpu
);
1413 q_vector
->cpu
= cpu
;
1418 static void ixgbe_setup_dca(struct ixgbe_adapter
*adapter
)
1422 /* always use CB2 mode, difference is masked in the CB driver */
1423 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1424 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1425 IXGBE_DCA_CTRL_DCA_MODE_CB2
);
1427 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1428 IXGBE_DCA_CTRL_DCA_DISABLE
);
1430 for (i
= 0; i
< adapter
->num_q_vectors
; i
++) {
1431 adapter
->q_vector
[i
]->cpu
= -1;
1432 ixgbe_update_dca(adapter
->q_vector
[i
]);
1436 static int __ixgbe_notify_dca(struct device
*dev
, void *data
)
1438 struct ixgbe_adapter
*adapter
= dev_get_drvdata(dev
);
1439 unsigned long event
= *(unsigned long *)data
;
1441 if (!(adapter
->flags
& IXGBE_FLAG_DCA_CAPABLE
))
1445 case DCA_PROVIDER_ADD
:
1446 /* if we're already enabled, don't do it again */
1447 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1449 if (dca_add_requester(dev
) == 0) {
1450 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
1451 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1452 IXGBE_DCA_CTRL_DCA_MODE_CB2
);
1455 /* fall through - DCA is disabled. */
1456 case DCA_PROVIDER_REMOVE
:
1457 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
1458 dca_remove_requester(dev
);
1459 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
1460 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1461 IXGBE_DCA_CTRL_DCA_DISABLE
);
1469 #endif /* CONFIG_IXGBE_DCA */
1471 #define IXGBE_RSS_L4_TYPES_MASK \
1472 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \
1473 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \
1474 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \
1475 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP))
1477 static inline void ixgbe_rx_hash(struct ixgbe_ring
*ring
,
1478 union ixgbe_adv_rx_desc
*rx_desc
,
1479 struct sk_buff
*skb
)
1483 if (!(ring
->netdev
->features
& NETIF_F_RXHASH
))
1486 rss_type
= le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
) &
1487 IXGBE_RXDADV_RSSTYPE_MASK
;
1492 skb_set_hash(skb
, le32_to_cpu(rx_desc
->wb
.lower
.hi_dword
.rss
),
1493 (IXGBE_RSS_L4_TYPES_MASK
& (1ul << rss_type
)) ?
1494 PKT_HASH_TYPE_L4
: PKT_HASH_TYPE_L3
);
1499 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
1500 * @ring: structure containing ring specific data
1501 * @rx_desc: advanced rx descriptor
1503 * Returns : true if it is FCoE pkt
1505 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring
*ring
,
1506 union ixgbe_adv_rx_desc
*rx_desc
)
1508 __le16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
1510 return test_bit(__IXGBE_RX_FCOE
, &ring
->state
) &&
1511 ((pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK
)) ==
1512 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE
<<
1513 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT
)));
1516 #endif /* IXGBE_FCOE */
1518 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
1519 * @ring: structure containing ring specific data
1520 * @rx_desc: current Rx descriptor being processed
1521 * @skb: skb currently being received and modified
1523 static inline void ixgbe_rx_checksum(struct ixgbe_ring
*ring
,
1524 union ixgbe_adv_rx_desc
*rx_desc
,
1525 struct sk_buff
*skb
)
1527 __le16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
1528 bool encap_pkt
= false;
1530 skb_checksum_none_assert(skb
);
1532 /* Rx csum disabled */
1533 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
1536 /* check for VXLAN and Geneve packets */
1537 if (pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN
)) {
1539 skb
->encapsulation
= 1;
1542 /* if IP and error */
1543 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_IPCS
) &&
1544 ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_IPE
)) {
1545 ring
->rx_stats
.csum_err
++;
1549 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_L4CS
))
1552 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_TCPE
)) {
1554 * 82599 errata, UDP frames with a 0 checksum can be marked as
1557 if ((pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP
)) &&
1558 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR
, &ring
->state
))
1561 ring
->rx_stats
.csum_err
++;
1565 /* It must be a TCP or UDP packet with a valid checksum */
1566 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1568 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_OUTERIPCS
))
1571 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_OUTERIPER
)) {
1572 skb
->ip_summed
= CHECKSUM_NONE
;
1575 /* If we checked the outer header let the stack know */
1576 skb
->csum_level
= 1;
1580 static inline unsigned int ixgbe_rx_offset(struct ixgbe_ring
*rx_ring
)
1582 return ring_uses_build_skb(rx_ring
) ? IXGBE_SKB_PAD
: 0;
1585 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring
*rx_ring
,
1586 struct ixgbe_rx_buffer
*bi
)
1588 struct page
*page
= bi
->page
;
1591 /* since we are recycling buffers we should seldom need to alloc */
1595 /* alloc new page for storage */
1596 page
= dev_alloc_pages(ixgbe_rx_pg_order(rx_ring
));
1597 if (unlikely(!page
)) {
1598 rx_ring
->rx_stats
.alloc_rx_page_failed
++;
1602 /* map page for use */
1603 dma
= dma_map_page_attrs(rx_ring
->dev
, page
, 0,
1604 ixgbe_rx_pg_size(rx_ring
),
1609 * if mapping failed free memory back to system since
1610 * there isn't much point in holding memory we can't use
1612 if (dma_mapping_error(rx_ring
->dev
, dma
)) {
1613 __free_pages(page
, ixgbe_rx_pg_order(rx_ring
));
1615 rx_ring
->rx_stats
.alloc_rx_page_failed
++;
1621 bi
->page_offset
= ixgbe_rx_offset(rx_ring
);
1622 bi
->pagecnt_bias
= 1;
1628 * ixgbe_alloc_rx_buffers - Replace used receive buffers
1629 * @rx_ring: ring to place buffers on
1630 * @cleaned_count: number of buffers to replace
1632 void ixgbe_alloc_rx_buffers(struct ixgbe_ring
*rx_ring
, u16 cleaned_count
)
1634 union ixgbe_adv_rx_desc
*rx_desc
;
1635 struct ixgbe_rx_buffer
*bi
;
1636 u16 i
= rx_ring
->next_to_use
;
1643 rx_desc
= IXGBE_RX_DESC(rx_ring
, i
);
1644 bi
= &rx_ring
->rx_buffer_info
[i
];
1645 i
-= rx_ring
->count
;
1647 bufsz
= ixgbe_rx_bufsz(rx_ring
);
1650 if (!ixgbe_alloc_mapped_page(rx_ring
, bi
))
1653 /* sync the buffer for use by the device */
1654 dma_sync_single_range_for_device(rx_ring
->dev
, bi
->dma
,
1655 bi
->page_offset
, bufsz
,
1659 * Refresh the desc even if buffer_addrs didn't change
1660 * because each write-back erases this info.
1662 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
+ bi
->page_offset
);
1668 rx_desc
= IXGBE_RX_DESC(rx_ring
, 0);
1669 bi
= rx_ring
->rx_buffer_info
;
1670 i
-= rx_ring
->count
;
1673 /* clear the length for the next_to_use descriptor */
1674 rx_desc
->wb
.upper
.length
= 0;
1677 } while (cleaned_count
);
1679 i
+= rx_ring
->count
;
1681 if (rx_ring
->next_to_use
!= i
) {
1682 rx_ring
->next_to_use
= i
;
1684 /* update next to alloc since we have filled the ring */
1685 rx_ring
->next_to_alloc
= i
;
1687 /* Force memory writes to complete before letting h/w
1688 * know there are new descriptors to fetch. (Only
1689 * applicable for weak-ordered memory model archs,
1693 writel(i
, rx_ring
->tail
);
1697 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring
*ring
,
1698 struct sk_buff
*skb
)
1700 u16 hdr_len
= skb_headlen(skb
);
1702 /* set gso_size to avoid messing up TCP MSS */
1703 skb_shinfo(skb
)->gso_size
= DIV_ROUND_UP((skb
->len
- hdr_len
),
1704 IXGBE_CB(skb
)->append_cnt
);
1705 skb_shinfo(skb
)->gso_type
= SKB_GSO_TCPV4
;
1708 static void ixgbe_update_rsc_stats(struct ixgbe_ring
*rx_ring
,
1709 struct sk_buff
*skb
)
1711 /* if append_cnt is 0 then frame is not RSC */
1712 if (!IXGBE_CB(skb
)->append_cnt
)
1715 rx_ring
->rx_stats
.rsc_count
+= IXGBE_CB(skb
)->append_cnt
;
1716 rx_ring
->rx_stats
.rsc_flush
++;
1718 ixgbe_set_rsc_gso_size(rx_ring
, skb
);
1720 /* gso_size is computed using append_cnt so always clear it last */
1721 IXGBE_CB(skb
)->append_cnt
= 0;
1725 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
1726 * @rx_ring: rx descriptor ring packet is being transacted on
1727 * @rx_desc: pointer to the EOP Rx descriptor
1728 * @skb: pointer to current skb being populated
1730 * This function checks the ring, descriptor, and packet information in
1731 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
1732 * other fields within the skb.
1734 static void ixgbe_process_skb_fields(struct ixgbe_ring
*rx_ring
,
1735 union ixgbe_adv_rx_desc
*rx_desc
,
1736 struct sk_buff
*skb
)
1738 struct net_device
*dev
= rx_ring
->netdev
;
1739 u32 flags
= rx_ring
->q_vector
->adapter
->flags
;
1741 ixgbe_update_rsc_stats(rx_ring
, skb
);
1743 ixgbe_rx_hash(rx_ring
, rx_desc
, skb
);
1745 ixgbe_rx_checksum(rx_ring
, rx_desc
, skb
);
1747 if (unlikely(flags
& IXGBE_FLAG_RX_HWTSTAMP_ENABLED
))
1748 ixgbe_ptp_rx_hwtstamp(rx_ring
, rx_desc
, skb
);
1750 if ((dev
->features
& NETIF_F_HW_VLAN_CTAG_RX
) &&
1751 ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_VP
)) {
1752 u16 vid
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
1753 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), vid
);
1756 skb_record_rx_queue(skb
, rx_ring
->queue_index
);
1758 skb
->protocol
= eth_type_trans(skb
, dev
);
1761 static void ixgbe_rx_skb(struct ixgbe_q_vector
*q_vector
,
1762 struct sk_buff
*skb
)
1764 napi_gro_receive(&q_vector
->napi
, skb
);
1768 * ixgbe_is_non_eop - process handling of non-EOP buffers
1769 * @rx_ring: Rx ring being processed
1770 * @rx_desc: Rx descriptor for current buffer
1771 * @skb: Current socket buffer containing buffer in progress
1773 * This function updates next to clean. If the buffer is an EOP buffer
1774 * this function exits returning false, otherwise it will place the
1775 * sk_buff in the next buffer to be chained and return true indicating
1776 * that this is in fact a non-EOP buffer.
1778 static bool ixgbe_is_non_eop(struct ixgbe_ring
*rx_ring
,
1779 union ixgbe_adv_rx_desc
*rx_desc
,
1780 struct sk_buff
*skb
)
1782 u32 ntc
= rx_ring
->next_to_clean
+ 1;
1784 /* fetch, update, and store next to clean */
1785 ntc
= (ntc
< rx_ring
->count
) ? ntc
: 0;
1786 rx_ring
->next_to_clean
= ntc
;
1788 prefetch(IXGBE_RX_DESC(rx_ring
, ntc
));
1790 /* update RSC append count if present */
1791 if (ring_is_rsc_enabled(rx_ring
)) {
1792 __le32 rsc_enabled
= rx_desc
->wb
.lower
.lo_dword
.data
&
1793 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK
);
1795 if (unlikely(rsc_enabled
)) {
1796 u32 rsc_cnt
= le32_to_cpu(rsc_enabled
);
1798 rsc_cnt
>>= IXGBE_RXDADV_RSCCNT_SHIFT
;
1799 IXGBE_CB(skb
)->append_cnt
+= rsc_cnt
- 1;
1801 /* update ntc based on RSC value */
1802 ntc
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1803 ntc
&= IXGBE_RXDADV_NEXTP_MASK
;
1804 ntc
>>= IXGBE_RXDADV_NEXTP_SHIFT
;
1808 /* if we are the last buffer then there is nothing else to do */
1809 if (likely(ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
)))
1812 /* place skb in next buffer to be received */
1813 rx_ring
->rx_buffer_info
[ntc
].skb
= skb
;
1814 rx_ring
->rx_stats
.non_eop_descs
++;
1820 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
1821 * @rx_ring: rx descriptor ring packet is being transacted on
1822 * @skb: pointer to current skb being adjusted
1824 * This function is an ixgbe specific version of __pskb_pull_tail. The
1825 * main difference between this version and the original function is that
1826 * this function can make several assumptions about the state of things
1827 * that allow for significant optimizations versus the standard function.
1828 * As a result we can do things like drop a frag and maintain an accurate
1829 * truesize for the skb.
1831 static void ixgbe_pull_tail(struct ixgbe_ring
*rx_ring
,
1832 struct sk_buff
*skb
)
1834 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[0];
1836 unsigned int pull_len
;
1839 * it is valid to use page_address instead of kmap since we are
1840 * working with pages allocated out of the lomem pool per
1841 * alloc_page(GFP_ATOMIC)
1843 va
= skb_frag_address(frag
);
1846 * we need the header to contain the greater of either ETH_HLEN or
1847 * 60 bytes if the skb->len is less than 60 for skb_pad.
1849 pull_len
= eth_get_headlen(va
, IXGBE_RX_HDR_SIZE
);
1851 /* align pull length to size of long to optimize memcpy performance */
1852 skb_copy_to_linear_data(skb
, va
, ALIGN(pull_len
, sizeof(long)));
1854 /* update all of the pointers */
1855 skb_frag_size_sub(frag
, pull_len
);
1856 frag
->page_offset
+= pull_len
;
1857 skb
->data_len
-= pull_len
;
1858 skb
->tail
+= pull_len
;
1862 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
1863 * @rx_ring: rx descriptor ring packet is being transacted on
1864 * @skb: pointer to current skb being updated
1866 * This function provides a basic DMA sync up for the first fragment of an
1867 * skb. The reason for doing this is that the first fragment cannot be
1868 * unmapped until we have reached the end of packet descriptor for a buffer
1871 static void ixgbe_dma_sync_frag(struct ixgbe_ring
*rx_ring
,
1872 struct sk_buff
*skb
)
1874 /* if the page was released unmap it, else just sync our portion */
1875 if (unlikely(IXGBE_CB(skb
)->page_released
)) {
1876 dma_unmap_page_attrs(rx_ring
->dev
, IXGBE_CB(skb
)->dma
,
1877 ixgbe_rx_pg_size(rx_ring
),
1881 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[0];
1883 dma_sync_single_range_for_cpu(rx_ring
->dev
,
1886 skb_frag_size(frag
),
1892 * ixgbe_cleanup_headers - Correct corrupted or empty headers
1893 * @rx_ring: rx descriptor ring packet is being transacted on
1894 * @rx_desc: pointer to the EOP Rx descriptor
1895 * @skb: pointer to current skb being fixed
1897 * Check if the skb is valid in the XDP case it will be an error pointer.
1898 * Return true in this case to abort processing and advance to next
1901 * Check for corrupted packet headers caused by senders on the local L2
1902 * embedded NIC switch not setting up their Tx Descriptors right. These
1903 * should be very rare.
1905 * Also address the case where we are pulling data in on pages only
1906 * and as such no data is present in the skb header.
1908 * In addition if skb is not at least 60 bytes we need to pad it so that
1909 * it is large enough to qualify as a valid Ethernet frame.
1911 * Returns true if an error was encountered and skb was freed.
1913 static bool ixgbe_cleanup_headers(struct ixgbe_ring
*rx_ring
,
1914 union ixgbe_adv_rx_desc
*rx_desc
,
1915 struct sk_buff
*skb
)
1917 struct net_device
*netdev
= rx_ring
->netdev
;
1919 /* XDP packets use error pointer so abort at this point */
1923 /* verify that the packet does not have any known errors */
1924 if (unlikely(ixgbe_test_staterr(rx_desc
,
1925 IXGBE_RXDADV_ERR_FRAME_ERR_MASK
) &&
1926 !(netdev
->features
& NETIF_F_RXALL
))) {
1927 dev_kfree_skb_any(skb
);
1931 /* place header in linear portion of buffer */
1932 if (!skb_headlen(skb
))
1933 ixgbe_pull_tail(rx_ring
, skb
);
1936 /* do not attempt to pad FCoE Frames as this will disrupt DDP */
1937 if (ixgbe_rx_is_fcoe(rx_ring
, rx_desc
))
1941 /* if eth_skb_pad returns an error the skb was freed */
1942 if (eth_skb_pad(skb
))
1949 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
1950 * @rx_ring: rx descriptor ring to store buffers on
1951 * @old_buff: donor buffer to have page reused
1953 * Synchronizes page for reuse by the adapter
1955 static void ixgbe_reuse_rx_page(struct ixgbe_ring
*rx_ring
,
1956 struct ixgbe_rx_buffer
*old_buff
)
1958 struct ixgbe_rx_buffer
*new_buff
;
1959 u16 nta
= rx_ring
->next_to_alloc
;
1961 new_buff
= &rx_ring
->rx_buffer_info
[nta
];
1963 /* update, and store next to alloc */
1965 rx_ring
->next_to_alloc
= (nta
< rx_ring
->count
) ? nta
: 0;
1967 /* Transfer page from old buffer to new buffer.
1968 * Move each member individually to avoid possible store
1969 * forwarding stalls and unnecessary copy of skb.
1971 new_buff
->dma
= old_buff
->dma
;
1972 new_buff
->page
= old_buff
->page
;
1973 new_buff
->page_offset
= old_buff
->page_offset
;
1974 new_buff
->pagecnt_bias
= old_buff
->pagecnt_bias
;
1977 static inline bool ixgbe_page_is_reserved(struct page
*page
)
1979 return (page_to_nid(page
) != numa_mem_id()) || page_is_pfmemalloc(page
);
1982 static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer
*rx_buffer
)
1984 unsigned int pagecnt_bias
= rx_buffer
->pagecnt_bias
;
1985 struct page
*page
= rx_buffer
->page
;
1987 /* avoid re-using remote pages */
1988 if (unlikely(ixgbe_page_is_reserved(page
)))
1991 #if (PAGE_SIZE < 8192)
1992 /* if we are only owner of page we can reuse it */
1993 if (unlikely((page_ref_count(page
) - pagecnt_bias
) > 1))
1996 /* The last offset is a bit aggressive in that we assume the
1997 * worst case of FCoE being enabled and using a 3K buffer.
1998 * However this should have minimal impact as the 1K extra is
1999 * still less than one buffer in size.
2001 #define IXGBE_LAST_OFFSET \
2002 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K)
2003 if (rx_buffer
->page_offset
> IXGBE_LAST_OFFSET
)
2007 /* If we have drained the page fragment pool we need to update
2008 * the pagecnt_bias and page count so that we fully restock the
2009 * number of references the driver holds.
2011 if (unlikely(!pagecnt_bias
)) {
2012 page_ref_add(page
, USHRT_MAX
);
2013 rx_buffer
->pagecnt_bias
= USHRT_MAX
;
2020 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
2021 * @rx_ring: rx descriptor ring to transact packets on
2022 * @rx_buffer: buffer containing page to add
2023 * @rx_desc: descriptor containing length of buffer written by hardware
2024 * @skb: sk_buff to place the data into
2026 * This function will add the data contained in rx_buffer->page to the skb.
2027 * This is done either through a direct copy if the data in the buffer is
2028 * less than the skb header size, otherwise it will just attach the page as
2029 * a frag to the skb.
2031 * The function will then update the page offset if necessary and return
2032 * true if the buffer can be reused by the adapter.
2034 static void ixgbe_add_rx_frag(struct ixgbe_ring
*rx_ring
,
2035 struct ixgbe_rx_buffer
*rx_buffer
,
2036 struct sk_buff
*skb
,
2039 #if (PAGE_SIZE < 8192)
2040 unsigned int truesize
= ixgbe_rx_pg_size(rx_ring
) / 2;
2042 unsigned int truesize
= ring_uses_build_skb(rx_ring
) ?
2043 SKB_DATA_ALIGN(IXGBE_SKB_PAD
+ size
) :
2044 SKB_DATA_ALIGN(size
);
2046 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
, rx_buffer
->page
,
2047 rx_buffer
->page_offset
, size
, truesize
);
2048 #if (PAGE_SIZE < 8192)
2049 rx_buffer
->page_offset
^= truesize
;
2051 rx_buffer
->page_offset
+= truesize
;
2055 static struct ixgbe_rx_buffer
*ixgbe_get_rx_buffer(struct ixgbe_ring
*rx_ring
,
2056 union ixgbe_adv_rx_desc
*rx_desc
,
2057 struct sk_buff
**skb
,
2058 const unsigned int size
)
2060 struct ixgbe_rx_buffer
*rx_buffer
;
2062 rx_buffer
= &rx_ring
->rx_buffer_info
[rx_ring
->next_to_clean
];
2063 prefetchw(rx_buffer
->page
);
2064 *skb
= rx_buffer
->skb
;
2066 /* Delay unmapping of the first packet. It carries the header
2067 * information, HW may still access the header after the writeback.
2068 * Only unmap it when EOP is reached
2070 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
)) {
2075 ixgbe_dma_sync_frag(rx_ring
, *skb
);
2078 /* we are reusing so sync this buffer for CPU use */
2079 dma_sync_single_range_for_cpu(rx_ring
->dev
,
2081 rx_buffer
->page_offset
,
2085 rx_buffer
->pagecnt_bias
--;
2090 static void ixgbe_put_rx_buffer(struct ixgbe_ring
*rx_ring
,
2091 struct ixgbe_rx_buffer
*rx_buffer
,
2092 struct sk_buff
*skb
)
2094 if (ixgbe_can_reuse_rx_page(rx_buffer
)) {
2095 /* hand second half of page back to the ring */
2096 ixgbe_reuse_rx_page(rx_ring
, rx_buffer
);
2098 if (!IS_ERR(skb
) && IXGBE_CB(skb
)->dma
== rx_buffer
->dma
) {
2099 /* the page has been released from the ring */
2100 IXGBE_CB(skb
)->page_released
= true;
2102 /* we are not reusing the buffer so unmap it */
2103 dma_unmap_page_attrs(rx_ring
->dev
, rx_buffer
->dma
,
2104 ixgbe_rx_pg_size(rx_ring
),
2108 __page_frag_cache_drain(rx_buffer
->page
,
2109 rx_buffer
->pagecnt_bias
);
2112 /* clear contents of rx_buffer */
2113 rx_buffer
->page
= NULL
;
2114 rx_buffer
->skb
= NULL
;
2117 static struct sk_buff
*ixgbe_construct_skb(struct ixgbe_ring
*rx_ring
,
2118 struct ixgbe_rx_buffer
*rx_buffer
,
2119 struct xdp_buff
*xdp
,
2120 union ixgbe_adv_rx_desc
*rx_desc
)
2122 unsigned int size
= xdp
->data_end
- xdp
->data
;
2123 #if (PAGE_SIZE < 8192)
2124 unsigned int truesize
= ixgbe_rx_pg_size(rx_ring
) / 2;
2126 unsigned int truesize
= SKB_DATA_ALIGN(xdp
->data_end
-
2127 xdp
->data_hard_start
);
2129 struct sk_buff
*skb
;
2131 /* prefetch first cache line of first page */
2132 prefetch(xdp
->data
);
2133 #if L1_CACHE_BYTES < 128
2134 prefetch(xdp
->data
+ L1_CACHE_BYTES
);
2137 /* allocate a skb to store the frags */
2138 skb
= napi_alloc_skb(&rx_ring
->q_vector
->napi
, IXGBE_RX_HDR_SIZE
);
2142 if (size
> IXGBE_RX_HDR_SIZE
) {
2143 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
))
2144 IXGBE_CB(skb
)->dma
= rx_buffer
->dma
;
2146 skb_add_rx_frag(skb
, 0, rx_buffer
->page
,
2147 xdp
->data
- page_address(rx_buffer
->page
),
2149 #if (PAGE_SIZE < 8192)
2150 rx_buffer
->page_offset
^= truesize
;
2152 rx_buffer
->page_offset
+= truesize
;
2155 memcpy(__skb_put(skb
, size
),
2156 xdp
->data
, ALIGN(size
, sizeof(long)));
2157 rx_buffer
->pagecnt_bias
++;
2163 static struct sk_buff
*ixgbe_build_skb(struct ixgbe_ring
*rx_ring
,
2164 struct ixgbe_rx_buffer
*rx_buffer
,
2165 struct xdp_buff
*xdp
,
2166 union ixgbe_adv_rx_desc
*rx_desc
)
2168 #if (PAGE_SIZE < 8192)
2169 unsigned int truesize
= ixgbe_rx_pg_size(rx_ring
) / 2;
2171 unsigned int truesize
= SKB_DATA_ALIGN(sizeof(struct skb_shared_info
)) +
2172 SKB_DATA_ALIGN(xdp
->data_end
-
2173 xdp
->data_hard_start
);
2175 struct sk_buff
*skb
;
2177 /* prefetch first cache line of first page */
2178 prefetch(xdp
->data
);
2179 #if L1_CACHE_BYTES < 128
2180 prefetch(xdp
->data
+ L1_CACHE_BYTES
);
2183 /* build an skb to around the page buffer */
2184 skb
= build_skb(xdp
->data_hard_start
, truesize
);
2188 /* update pointers within the skb to store the data */
2189 skb_reserve(skb
, xdp
->data
- xdp
->data_hard_start
);
2190 __skb_put(skb
, xdp
->data_end
- xdp
->data
);
2192 /* record DMA address if this is the start of a chain of buffers */
2193 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
))
2194 IXGBE_CB(skb
)->dma
= rx_buffer
->dma
;
2196 /* update buffer offset */
2197 #if (PAGE_SIZE < 8192)
2198 rx_buffer
->page_offset
^= truesize
;
2200 rx_buffer
->page_offset
+= truesize
;
2206 #define IXGBE_XDP_PASS 0
2207 #define IXGBE_XDP_CONSUMED 1
2208 #define IXGBE_XDP_TX 2
2210 static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter
*adapter
,
2211 struct xdp_buff
*xdp
);
2213 static struct sk_buff
*ixgbe_run_xdp(struct ixgbe_adapter
*adapter
,
2214 struct ixgbe_ring
*rx_ring
,
2215 struct xdp_buff
*xdp
)
2217 int result
= IXGBE_XDP_PASS
;
2218 struct bpf_prog
*xdp_prog
;
2222 xdp_prog
= READ_ONCE(rx_ring
->xdp_prog
);
2227 act
= bpf_prog_run_xdp(xdp_prog
, xdp
);
2232 result
= ixgbe_xmit_xdp_ring(adapter
, xdp
);
2235 bpf_warn_invalid_xdp_action(act
);
2238 trace_xdp_exception(rx_ring
->netdev
, xdp_prog
, act
);
2239 /* fallthrough -- handle aborts by dropping packet */
2241 result
= IXGBE_XDP_CONSUMED
;
2246 return ERR_PTR(-result
);
2249 static void ixgbe_rx_buffer_flip(struct ixgbe_ring
*rx_ring
,
2250 struct ixgbe_rx_buffer
*rx_buffer
,
2253 #if (PAGE_SIZE < 8192)
2254 unsigned int truesize
= ixgbe_rx_pg_size(rx_ring
) / 2;
2256 rx_buffer
->page_offset
^= truesize
;
2258 unsigned int truesize
= ring_uses_build_skb(rx_ring
) ?
2259 SKB_DATA_ALIGN(IXGBE_SKB_PAD
+ size
) :
2260 SKB_DATA_ALIGN(size
);
2262 rx_buffer
->page_offset
+= truesize
;
2267 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
2268 * @q_vector: structure containing interrupt and ring information
2269 * @rx_ring: rx descriptor ring to transact packets on
2270 * @budget: Total limit on number of packets to process
2272 * This function provides a "bounce buffer" approach to Rx interrupt
2273 * processing. The advantage to this is that on systems that have
2274 * expensive overhead for IOMMU access this provides a means of avoiding
2275 * it by maintaining the mapping of the page to the syste.
2277 * Returns amount of work completed
2279 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector
*q_vector
,
2280 struct ixgbe_ring
*rx_ring
,
2283 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
2284 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2287 unsigned int mss
= 0;
2288 #endif /* IXGBE_FCOE */
2289 u16 cleaned_count
= ixgbe_desc_unused(rx_ring
);
2290 bool xdp_xmit
= false;
2292 while (likely(total_rx_packets
< budget
)) {
2293 union ixgbe_adv_rx_desc
*rx_desc
;
2294 struct ixgbe_rx_buffer
*rx_buffer
;
2295 struct sk_buff
*skb
;
2296 struct xdp_buff xdp
;
2299 /* return some buffers to hardware, one at a time is too slow */
2300 if (cleaned_count
>= IXGBE_RX_BUFFER_WRITE
) {
2301 ixgbe_alloc_rx_buffers(rx_ring
, cleaned_count
);
2305 rx_desc
= IXGBE_RX_DESC(rx_ring
, rx_ring
->next_to_clean
);
2306 size
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
2310 /* This memory barrier is needed to keep us from reading
2311 * any other fields out of the rx_desc until we know the
2312 * descriptor has been written back
2316 rx_buffer
= ixgbe_get_rx_buffer(rx_ring
, rx_desc
, &skb
, size
);
2318 /* retrieve a buffer from the ring */
2320 xdp
.data
= page_address(rx_buffer
->page
) +
2321 rx_buffer
->page_offset
;
2322 xdp
.data_hard_start
= xdp
.data
-
2323 ixgbe_rx_offset(rx_ring
);
2324 xdp
.data_end
= xdp
.data
+ size
;
2326 skb
= ixgbe_run_xdp(adapter
, rx_ring
, &xdp
);
2330 if (PTR_ERR(skb
) == -IXGBE_XDP_TX
) {
2332 ixgbe_rx_buffer_flip(rx_ring
, rx_buffer
, size
);
2334 rx_buffer
->pagecnt_bias
++;
2337 total_rx_bytes
+= size
;
2339 ixgbe_add_rx_frag(rx_ring
, rx_buffer
, skb
, size
);
2340 } else if (ring_uses_build_skb(rx_ring
)) {
2341 skb
= ixgbe_build_skb(rx_ring
, rx_buffer
,
2344 skb
= ixgbe_construct_skb(rx_ring
, rx_buffer
,
2348 /* exit if we failed to retrieve a buffer */
2350 rx_ring
->rx_stats
.alloc_rx_buff_failed
++;
2351 rx_buffer
->pagecnt_bias
++;
2355 ixgbe_put_rx_buffer(rx_ring
, rx_buffer
, skb
);
2358 /* place incomplete frames back on ring for completion */
2359 if (ixgbe_is_non_eop(rx_ring
, rx_desc
, skb
))
2362 /* verify the packet layout is correct */
2363 if (ixgbe_cleanup_headers(rx_ring
, rx_desc
, skb
))
2366 /* probably a little skewed due to removing CRC */
2367 total_rx_bytes
+= skb
->len
;
2369 /* populate checksum, timestamp, VLAN, and protocol */
2370 ixgbe_process_skb_fields(rx_ring
, rx_desc
, skb
);
2373 /* if ddp, not passing to ULD unless for FCP_RSP or error */
2374 if (ixgbe_rx_is_fcoe(rx_ring
, rx_desc
)) {
2375 ddp_bytes
= ixgbe_fcoe_ddp(adapter
, rx_desc
, skb
);
2376 /* include DDPed FCoE data */
2377 if (ddp_bytes
> 0) {
2379 mss
= rx_ring
->netdev
->mtu
-
2380 sizeof(struct fcoe_hdr
) -
2381 sizeof(struct fc_frame_header
) -
2382 sizeof(struct fcoe_crc_eof
);
2386 total_rx_bytes
+= ddp_bytes
;
2387 total_rx_packets
+= DIV_ROUND_UP(ddp_bytes
,
2391 dev_kfree_skb_any(skb
);
2396 #endif /* IXGBE_FCOE */
2397 ixgbe_rx_skb(q_vector
, skb
);
2399 /* update budget accounting */
2404 struct ixgbe_ring
*ring
= adapter
->xdp_ring
[smp_processor_id()];
2406 /* Force memory writes to complete before letting h/w
2407 * know there are new descriptors to fetch.
2410 writel(ring
->next_to_use
, ring
->tail
);
2413 u64_stats_update_begin(&rx_ring
->syncp
);
2414 rx_ring
->stats
.packets
+= total_rx_packets
;
2415 rx_ring
->stats
.bytes
+= total_rx_bytes
;
2416 u64_stats_update_end(&rx_ring
->syncp
);
2417 q_vector
->rx
.total_packets
+= total_rx_packets
;
2418 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
2420 return total_rx_packets
;
2424 * ixgbe_configure_msix - Configure MSI-X hardware
2425 * @adapter: board private structure
2427 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
2430 static void ixgbe_configure_msix(struct ixgbe_adapter
*adapter
)
2432 struct ixgbe_q_vector
*q_vector
;
2436 /* Populate MSIX to EITR Select */
2437 if (adapter
->num_vfs
> 32) {
2438 u32 eitrsel
= BIT(adapter
->num_vfs
- 32) - 1;
2439 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, eitrsel
);
2443 * Populate the IVAR table and set the ITR values to the
2444 * corresponding register.
2446 for (v_idx
= 0; v_idx
< adapter
->num_q_vectors
; v_idx
++) {
2447 struct ixgbe_ring
*ring
;
2448 q_vector
= adapter
->q_vector
[v_idx
];
2450 ixgbe_for_each_ring(ring
, q_vector
->rx
)
2451 ixgbe_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
2453 ixgbe_for_each_ring(ring
, q_vector
->tx
)
2454 ixgbe_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
2456 ixgbe_write_eitr(q_vector
);
2459 switch (adapter
->hw
.mac
.type
) {
2460 case ixgbe_mac_82598EB
:
2461 ixgbe_set_ivar(adapter
, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX
,
2464 case ixgbe_mac_82599EB
:
2465 case ixgbe_mac_X540
:
2466 case ixgbe_mac_X550
:
2467 case ixgbe_mac_X550EM_x
:
2468 case ixgbe_mac_x550em_a
:
2469 ixgbe_set_ivar(adapter
, -1, 1, v_idx
);
2474 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITR(v_idx
), 1950);
2476 /* set up to autoclear timer, and the vectors */
2477 mask
= IXGBE_EIMS_ENABLE_MASK
;
2478 mask
&= ~(IXGBE_EIMS_OTHER
|
2479 IXGBE_EIMS_MAILBOX
|
2482 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIAC
, mask
);
2485 enum latency_range
{
2489 latency_invalid
= 255
2493 * ixgbe_update_itr - update the dynamic ITR value based on statistics
2494 * @q_vector: structure containing interrupt and ring information
2495 * @ring_container: structure containing ring performance data
2497 * Stores a new ITR value based on packets and byte
2498 * counts during the last interrupt. The advantage of per interrupt
2499 * computation is faster updates and more accurate ITR for the current
2500 * traffic pattern. Constants in this function were computed
2501 * based on theoretical maximum wire speed and thresholds were set based
2502 * on testing data as well as attempting to minimize response time
2503 * while increasing bulk throughput.
2504 * this functionality is controlled by the InterruptThrottleRate module
2505 * parameter (see ixgbe_param.c)
2507 static void ixgbe_update_itr(struct ixgbe_q_vector
*q_vector
,
2508 struct ixgbe_ring_container
*ring_container
)
2510 int bytes
= ring_container
->total_bytes
;
2511 int packets
= ring_container
->total_packets
;
2514 u8 itr_setting
= ring_container
->itr
;
2519 /* simple throttlerate management
2520 * 0-10MB/s lowest (100000 ints/s)
2521 * 10-20MB/s low (20000 ints/s)
2522 * 20-1249MB/s bulk (12000 ints/s)
2524 /* what was last interrupt timeslice? */
2525 timepassed_us
= q_vector
->itr
>> 2;
2526 if (timepassed_us
== 0)
2529 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
2531 switch (itr_setting
) {
2532 case lowest_latency
:
2533 if (bytes_perint
> 10)
2534 itr_setting
= low_latency
;
2537 if (bytes_perint
> 20)
2538 itr_setting
= bulk_latency
;
2539 else if (bytes_perint
<= 10)
2540 itr_setting
= lowest_latency
;
2543 if (bytes_perint
<= 20)
2544 itr_setting
= low_latency
;
2548 /* clear work counters since we have the values we need */
2549 ring_container
->total_bytes
= 0;
2550 ring_container
->total_packets
= 0;
2552 /* write updated itr to ring container */
2553 ring_container
->itr
= itr_setting
;
2557 * ixgbe_write_eitr - write EITR register in hardware specific way
2558 * @q_vector: structure containing interrupt and ring information
2560 * This function is made to be called by ethtool and by the driver
2561 * when it needs to update EITR registers at runtime. Hardware
2562 * specific quirks/differences are taken care of here.
2564 void ixgbe_write_eitr(struct ixgbe_q_vector
*q_vector
)
2566 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2567 struct ixgbe_hw
*hw
= &adapter
->hw
;
2568 int v_idx
= q_vector
->v_idx
;
2569 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
2571 switch (adapter
->hw
.mac
.type
) {
2572 case ixgbe_mac_82598EB
:
2573 /* must write high and low 16 bits to reset counter */
2574 itr_reg
|= (itr_reg
<< 16);
2576 case ixgbe_mac_82599EB
:
2577 case ixgbe_mac_X540
:
2578 case ixgbe_mac_X550
:
2579 case ixgbe_mac_X550EM_x
:
2580 case ixgbe_mac_x550em_a
:
2582 * set the WDIS bit to not clear the timer bits and cause an
2583 * immediate assertion of the interrupt
2585 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
2590 IXGBE_WRITE_REG(hw
, IXGBE_EITR(v_idx
), itr_reg
);
2593 static void ixgbe_set_itr(struct ixgbe_q_vector
*q_vector
)
2595 u32 new_itr
= q_vector
->itr
;
2598 ixgbe_update_itr(q_vector
, &q_vector
->tx
);
2599 ixgbe_update_itr(q_vector
, &q_vector
->rx
);
2601 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
2603 switch (current_itr
) {
2604 /* counts and packets in update_itr are dependent on these numbers */
2605 case lowest_latency
:
2606 new_itr
= IXGBE_100K_ITR
;
2609 new_itr
= IXGBE_20K_ITR
;
2612 new_itr
= IXGBE_12K_ITR
;
2618 if (new_itr
!= q_vector
->itr
) {
2619 /* do an exponential smoothing */
2620 new_itr
= (10 * new_itr
* q_vector
->itr
) /
2621 ((9 * new_itr
) + q_vector
->itr
);
2623 /* save the algorithm value here */
2624 q_vector
->itr
= new_itr
;
2626 ixgbe_write_eitr(q_vector
);
2631 * ixgbe_check_overtemp_subtask - check for over temperature
2632 * @adapter: pointer to adapter
2634 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter
*adapter
)
2636 struct ixgbe_hw
*hw
= &adapter
->hw
;
2637 u32 eicr
= adapter
->interrupt_event
;
2640 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
2643 if (!(adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_EVENT
))
2646 adapter
->flags2
&= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT
;
2648 switch (hw
->device_id
) {
2649 case IXGBE_DEV_ID_82599_T3_LOM
:
2651 * Since the warning interrupt is for both ports
2652 * we don't have to check if:
2653 * - This interrupt wasn't for our port.
2654 * - We may have missed the interrupt so always have to
2655 * check if we got a LSC
2657 if (!(eicr
& IXGBE_EICR_GPI_SDP0_8259X
) &&
2658 !(eicr
& IXGBE_EICR_LSC
))
2661 if (!(eicr
& IXGBE_EICR_LSC
) && hw
->mac
.ops
.check_link
) {
2663 bool link_up
= false;
2665 hw
->mac
.ops
.check_link(hw
, &speed
, &link_up
, false);
2671 /* Check if this is not due to overtemp */
2672 if (hw
->phy
.ops
.check_overtemp(hw
) != IXGBE_ERR_OVERTEMP
)
2676 case IXGBE_DEV_ID_X550EM_A_1G_T
:
2677 case IXGBE_DEV_ID_X550EM_A_1G_T_L
:
2678 rc
= hw
->phy
.ops
.check_overtemp(hw
);
2679 if (rc
!= IXGBE_ERR_OVERTEMP
)
2683 if (adapter
->hw
.mac
.type
>= ixgbe_mac_X540
)
2685 if (!(eicr
& IXGBE_EICR_GPI_SDP0(hw
)))
2689 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
2691 adapter
->interrupt_event
= 0;
2694 static void ixgbe_check_fan_failure(struct ixgbe_adapter
*adapter
, u32 eicr
)
2696 struct ixgbe_hw
*hw
= &adapter
->hw
;
2698 if ((adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) &&
2699 (eicr
& IXGBE_EICR_GPI_SDP1(hw
))) {
2700 e_crit(probe
, "Fan has stopped, replace the adapter\n");
2701 /* write to clear the interrupt */
2702 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1(hw
));
2706 static void ixgbe_check_overtemp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
2708 struct ixgbe_hw
*hw
= &adapter
->hw
;
2710 if (!(adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
))
2713 switch (adapter
->hw
.mac
.type
) {
2714 case ixgbe_mac_82599EB
:
2716 * Need to check link state so complete overtemp check
2719 if (((eicr
& IXGBE_EICR_GPI_SDP0(hw
)) ||
2720 (eicr
& IXGBE_EICR_LSC
)) &&
2721 (!test_bit(__IXGBE_DOWN
, &adapter
->state
))) {
2722 adapter
->interrupt_event
= eicr
;
2723 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_EVENT
;
2724 ixgbe_service_event_schedule(adapter
);
2728 case ixgbe_mac_x550em_a
:
2729 if (eicr
& IXGBE_EICR_GPI_SDP0_X550EM_a
) {
2730 adapter
->interrupt_event
= eicr
;
2731 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_EVENT
;
2732 ixgbe_service_event_schedule(adapter
);
2733 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
,
2734 IXGBE_EICR_GPI_SDP0_X550EM_a
);
2735 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICR
,
2736 IXGBE_EICR_GPI_SDP0_X550EM_a
);
2739 case ixgbe_mac_X550
:
2740 case ixgbe_mac_X540
:
2741 if (!(eicr
& IXGBE_EICR_TS
))
2748 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
2751 static inline bool ixgbe_is_sfp(struct ixgbe_hw
*hw
)
2753 switch (hw
->mac
.type
) {
2754 case ixgbe_mac_82598EB
:
2755 if (hw
->phy
.type
== ixgbe_phy_nl
)
2758 case ixgbe_mac_82599EB
:
2759 case ixgbe_mac_X550EM_x
:
2760 case ixgbe_mac_x550em_a
:
2761 switch (hw
->mac
.ops
.get_media_type(hw
)) {
2762 case ixgbe_media_type_fiber
:
2763 case ixgbe_media_type_fiber_qsfp
:
2773 static void ixgbe_check_sfp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
2775 struct ixgbe_hw
*hw
= &adapter
->hw
;
2776 u32 eicr_mask
= IXGBE_EICR_GPI_SDP2(hw
);
2778 if (!ixgbe_is_sfp(hw
))
2781 /* Later MAC's use different SDP */
2782 if (hw
->mac
.type
>= ixgbe_mac_X540
)
2783 eicr_mask
= IXGBE_EICR_GPI_SDP0_X540
;
2785 if (eicr
& eicr_mask
) {
2786 /* Clear the interrupt */
2787 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr_mask
);
2788 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2789 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
2790 adapter
->sfp_poll_time
= 0;
2791 ixgbe_service_event_schedule(adapter
);
2795 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
&&
2796 (eicr
& IXGBE_EICR_GPI_SDP1(hw
))) {
2797 /* Clear the interrupt */
2798 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1(hw
));
2799 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2800 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_CONFIG
;
2801 ixgbe_service_event_schedule(adapter
);
2806 static void ixgbe_check_lsc(struct ixgbe_adapter
*adapter
)
2808 struct ixgbe_hw
*hw
= &adapter
->hw
;
2811 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
2812 adapter
->link_check_timeout
= jiffies
;
2813 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2814 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_LSC
);
2815 IXGBE_WRITE_FLUSH(hw
);
2816 ixgbe_service_event_schedule(adapter
);
2820 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter
*adapter
,
2824 struct ixgbe_hw
*hw
= &adapter
->hw
;
2826 switch (hw
->mac
.type
) {
2827 case ixgbe_mac_82598EB
:
2828 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
2829 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, mask
);
2831 case ixgbe_mac_82599EB
:
2832 case ixgbe_mac_X540
:
2833 case ixgbe_mac_X550
:
2834 case ixgbe_mac_X550EM_x
:
2835 case ixgbe_mac_x550em_a
:
2836 mask
= (qmask
& 0xFFFFFFFF);
2838 IXGBE_WRITE_REG(hw
, IXGBE_EIMS_EX(0), mask
);
2839 mask
= (qmask
>> 32);
2841 IXGBE_WRITE_REG(hw
, IXGBE_EIMS_EX(1), mask
);
2846 /* skip the flush */
2849 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter
*adapter
,
2853 struct ixgbe_hw
*hw
= &adapter
->hw
;
2855 switch (hw
->mac
.type
) {
2856 case ixgbe_mac_82598EB
:
2857 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
2858 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, mask
);
2860 case ixgbe_mac_82599EB
:
2861 case ixgbe_mac_X540
:
2862 case ixgbe_mac_X550
:
2863 case ixgbe_mac_X550EM_x
:
2864 case ixgbe_mac_x550em_a
:
2865 mask
= (qmask
& 0xFFFFFFFF);
2867 IXGBE_WRITE_REG(hw
, IXGBE_EIMC_EX(0), mask
);
2868 mask
= (qmask
>> 32);
2870 IXGBE_WRITE_REG(hw
, IXGBE_EIMC_EX(1), mask
);
2875 /* skip the flush */
2879 * ixgbe_irq_enable - Enable default interrupt generation settings
2880 * @adapter: board private structure
2882 static inline void ixgbe_irq_enable(struct ixgbe_adapter
*adapter
, bool queues
,
2885 struct ixgbe_hw
*hw
= &adapter
->hw
;
2886 u32 mask
= (IXGBE_EIMS_ENABLE_MASK
& ~IXGBE_EIMS_RTX_QUEUE
);
2888 /* don't reenable LSC while waiting for link */
2889 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
)
2890 mask
&= ~IXGBE_EIMS_LSC
;
2892 if (adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
)
2893 switch (adapter
->hw
.mac
.type
) {
2894 case ixgbe_mac_82599EB
:
2895 mask
|= IXGBE_EIMS_GPI_SDP0(hw
);
2897 case ixgbe_mac_X540
:
2898 case ixgbe_mac_X550
:
2899 case ixgbe_mac_X550EM_x
:
2900 case ixgbe_mac_x550em_a
:
2901 mask
|= IXGBE_EIMS_TS
;
2906 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
2907 mask
|= IXGBE_EIMS_GPI_SDP1(hw
);
2908 switch (adapter
->hw
.mac
.type
) {
2909 case ixgbe_mac_82599EB
:
2910 mask
|= IXGBE_EIMS_GPI_SDP1(hw
);
2911 mask
|= IXGBE_EIMS_GPI_SDP2(hw
);
2913 case ixgbe_mac_X540
:
2914 case ixgbe_mac_X550
:
2915 case ixgbe_mac_X550EM_x
:
2916 case ixgbe_mac_x550em_a
:
2917 if (adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_X_SFP
||
2918 adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_A_SFP
||
2919 adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_A_SFP_N
)
2920 mask
|= IXGBE_EIMS_GPI_SDP0(&adapter
->hw
);
2921 if (adapter
->hw
.phy
.type
== ixgbe_phy_x550em_ext_t
)
2922 mask
|= IXGBE_EICR_GPI_SDP0_X540
;
2923 mask
|= IXGBE_EIMS_ECC
;
2924 mask
|= IXGBE_EIMS_MAILBOX
;
2930 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) &&
2931 !(adapter
->flags2
& IXGBE_FLAG2_FDIR_REQUIRES_REINIT
))
2932 mask
|= IXGBE_EIMS_FLOW_DIR
;
2934 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
2936 ixgbe_irq_enable_queues(adapter
, ~0);
2938 IXGBE_WRITE_FLUSH(&adapter
->hw
);
2941 static irqreturn_t
ixgbe_msix_other(int irq
, void *data
)
2943 struct ixgbe_adapter
*adapter
= data
;
2944 struct ixgbe_hw
*hw
= &adapter
->hw
;
2948 * Workaround for Silicon errata. Use clear-by-write instead
2949 * of clear-by-read. Reading with EICS will return the
2950 * interrupt causes without clearing, which later be done
2951 * with the write to EICR.
2953 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICS
);
2955 /* The lower 16bits of the EICR register are for the queue interrupts
2956 * which should be masked here in order to not accidentally clear them if
2957 * the bits are high when ixgbe_msix_other is called. There is a race
2958 * condition otherwise which results in possible performance loss
2959 * especially if the ixgbe_msix_other interrupt is triggering
2960 * consistently (as it would when PPS is turned on for the X540 device)
2964 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr
);
2966 if (eicr
& IXGBE_EICR_LSC
)
2967 ixgbe_check_lsc(adapter
);
2969 if (eicr
& IXGBE_EICR_MAILBOX
)
2970 ixgbe_msg_task(adapter
);
2972 switch (hw
->mac
.type
) {
2973 case ixgbe_mac_82599EB
:
2974 case ixgbe_mac_X540
:
2975 case ixgbe_mac_X550
:
2976 case ixgbe_mac_X550EM_x
:
2977 case ixgbe_mac_x550em_a
:
2978 if (hw
->phy
.type
== ixgbe_phy_x550em_ext_t
&&
2979 (eicr
& IXGBE_EICR_GPI_SDP0_X540
)) {
2980 adapter
->flags2
|= IXGBE_FLAG2_PHY_INTERRUPT
;
2981 ixgbe_service_event_schedule(adapter
);
2982 IXGBE_WRITE_REG(hw
, IXGBE_EICR
,
2983 IXGBE_EICR_GPI_SDP0_X540
);
2985 if (eicr
& IXGBE_EICR_ECC
) {
2986 e_info(link
, "Received ECC Err, initiating reset\n");
2987 set_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
);
2988 ixgbe_service_event_schedule(adapter
);
2989 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_ECC
);
2991 /* Handle Flow Director Full threshold interrupt */
2992 if (eicr
& IXGBE_EICR_FLOW_DIR
) {
2993 int reinit_count
= 0;
2995 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2996 struct ixgbe_ring
*ring
= adapter
->tx_ring
[i
];
2997 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE
,
3002 /* no more flow director interrupts until after init */
3003 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_FLOW_DIR
);
3004 adapter
->flags2
|= IXGBE_FLAG2_FDIR_REQUIRES_REINIT
;
3005 ixgbe_service_event_schedule(adapter
);
3008 ixgbe_check_sfp_event(adapter
, eicr
);
3009 ixgbe_check_overtemp_event(adapter
, eicr
);
3015 ixgbe_check_fan_failure(adapter
, eicr
);
3017 if (unlikely(eicr
& IXGBE_EICR_TIMESYNC
))
3018 ixgbe_ptp_check_pps_event(adapter
);
3020 /* re-enable the original interrupt state, no lsc, no queues */
3021 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3022 ixgbe_irq_enable(adapter
, false, false);
3027 static irqreturn_t
ixgbe_msix_clean_rings(int irq
, void *data
)
3029 struct ixgbe_q_vector
*q_vector
= data
;
3031 /* EIAM disabled interrupts (on this vector) for us */
3033 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
3034 napi_schedule_irqoff(&q_vector
->napi
);
3040 * ixgbe_poll - NAPI Rx polling callback
3041 * @napi: structure for representing this polling device
3042 * @budget: how many packets driver is allowed to clean
3044 * This function is used for legacy and MSI, NAPI mode
3046 int ixgbe_poll(struct napi_struct
*napi
, int budget
)
3048 struct ixgbe_q_vector
*q_vector
=
3049 container_of(napi
, struct ixgbe_q_vector
, napi
);
3050 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
3051 struct ixgbe_ring
*ring
;
3052 int per_ring_budget
, work_done
= 0;
3053 bool clean_complete
= true;
3055 #ifdef CONFIG_IXGBE_DCA
3056 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
3057 ixgbe_update_dca(q_vector
);
3060 ixgbe_for_each_ring(ring
, q_vector
->tx
) {
3061 if (!ixgbe_clean_tx_irq(q_vector
, ring
, budget
))
3062 clean_complete
= false;
3065 /* Exit if we are called by netpoll */
3069 /* attempt to distribute budget to each queue fairly, but don't allow
3070 * the budget to go below 1 because we'll exit polling */
3071 if (q_vector
->rx
.count
> 1)
3072 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
3074 per_ring_budget
= budget
;
3076 ixgbe_for_each_ring(ring
, q_vector
->rx
) {
3077 int cleaned
= ixgbe_clean_rx_irq(q_vector
, ring
,
3080 work_done
+= cleaned
;
3081 if (cleaned
>= per_ring_budget
)
3082 clean_complete
= false;
3085 /* If all work not completed, return budget and keep polling */
3086 if (!clean_complete
)
3089 /* all work done, exit the polling mode */
3090 napi_complete_done(napi
, work_done
);
3091 if (adapter
->rx_itr_setting
& 1)
3092 ixgbe_set_itr(q_vector
);
3093 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3094 ixgbe_irq_enable_queues(adapter
, BIT_ULL(q_vector
->v_idx
));
3096 return min(work_done
, budget
- 1);
3100 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
3101 * @adapter: board private structure
3103 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
3104 * interrupts from the kernel.
3106 static int ixgbe_request_msix_irqs(struct ixgbe_adapter
*adapter
)
3108 struct net_device
*netdev
= adapter
->netdev
;
3109 unsigned int ri
= 0, ti
= 0;
3112 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++) {
3113 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[vector
];
3114 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
3116 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
3117 snprintf(q_vector
->name
, sizeof(q_vector
->name
),
3118 "%s-TxRx-%u", netdev
->name
, ri
++);
3120 } else if (q_vector
->rx
.ring
) {
3121 snprintf(q_vector
->name
, sizeof(q_vector
->name
),
3122 "%s-rx-%u", netdev
->name
, ri
++);
3123 } else if (q_vector
->tx
.ring
) {
3124 snprintf(q_vector
->name
, sizeof(q_vector
->name
),
3125 "%s-tx-%u", netdev
->name
, ti
++);
3127 /* skip this unused q_vector */
3130 err
= request_irq(entry
->vector
, &ixgbe_msix_clean_rings
, 0,
3131 q_vector
->name
, q_vector
);
3133 e_err(probe
, "request_irq failed for MSIX interrupt "
3134 "Error: %d\n", err
);
3135 goto free_queue_irqs
;
3137 /* If Flow Director is enabled, set interrupt affinity */
3138 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
3139 /* assign the mask for this irq */
3140 irq_set_affinity_hint(entry
->vector
,
3141 &q_vector
->affinity_mask
);
3145 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
3146 ixgbe_msix_other
, 0, netdev
->name
, adapter
);
3148 e_err(probe
, "request_irq for msix_other failed: %d\n", err
);
3149 goto free_queue_irqs
;
3157 irq_set_affinity_hint(adapter
->msix_entries
[vector
].vector
,
3159 free_irq(adapter
->msix_entries
[vector
].vector
,
3160 adapter
->q_vector
[vector
]);
3162 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
3163 pci_disable_msix(adapter
->pdev
);
3164 kfree(adapter
->msix_entries
);
3165 adapter
->msix_entries
= NULL
;
3170 * ixgbe_intr - legacy mode Interrupt Handler
3171 * @irq: interrupt number
3172 * @data: pointer to a network interface device structure
3174 static irqreturn_t
ixgbe_intr(int irq
, void *data
)
3176 struct ixgbe_adapter
*adapter
= data
;
3177 struct ixgbe_hw
*hw
= &adapter
->hw
;
3178 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
3182 * Workaround for silicon errata #26 on 82598. Mask the interrupt
3183 * before the read of EICR.
3185 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_IRQ_CLEAR_MASK
);
3187 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
3188 * therefore no explicit interrupt disable is necessary */
3189 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICR
);
3192 * shared interrupt alert!
3193 * make sure interrupts are enabled because the read will
3194 * have disabled interrupts due to EIAM
3195 * finish the workaround of silicon errata on 82598. Unmask
3196 * the interrupt that we masked before the EICR read.
3198 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3199 ixgbe_irq_enable(adapter
, true, true);
3200 return IRQ_NONE
; /* Not our interrupt */
3203 if (eicr
& IXGBE_EICR_LSC
)
3204 ixgbe_check_lsc(adapter
);
3206 switch (hw
->mac
.type
) {
3207 case ixgbe_mac_82599EB
:
3208 ixgbe_check_sfp_event(adapter
, eicr
);
3210 case ixgbe_mac_X540
:
3211 case ixgbe_mac_X550
:
3212 case ixgbe_mac_X550EM_x
:
3213 case ixgbe_mac_x550em_a
:
3214 if (eicr
& IXGBE_EICR_ECC
) {
3215 e_info(link
, "Received ECC Err, initiating reset\n");
3216 set_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
);
3217 ixgbe_service_event_schedule(adapter
);
3218 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_ECC
);
3220 ixgbe_check_overtemp_event(adapter
, eicr
);
3226 ixgbe_check_fan_failure(adapter
, eicr
);
3227 if (unlikely(eicr
& IXGBE_EICR_TIMESYNC
))
3228 ixgbe_ptp_check_pps_event(adapter
);
3230 /* would disable interrupts here but EIAM disabled it */
3231 napi_schedule_irqoff(&q_vector
->napi
);
3234 * re-enable link(maybe) and non-queue interrupts, no flush.
3235 * ixgbe_poll will re-enable the queue interrupts
3237 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3238 ixgbe_irq_enable(adapter
, false, false);
3244 * ixgbe_request_irq - initialize interrupts
3245 * @adapter: board private structure
3247 * Attempts to configure interrupts using the best available
3248 * capabilities of the hardware and kernel.
3250 static int ixgbe_request_irq(struct ixgbe_adapter
*adapter
)
3252 struct net_device
*netdev
= adapter
->netdev
;
3255 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
3256 err
= ixgbe_request_msix_irqs(adapter
);
3257 else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
)
3258 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, 0,
3259 netdev
->name
, adapter
);
3261 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, IRQF_SHARED
,
3262 netdev
->name
, adapter
);
3265 e_err(probe
, "request_irq failed, Error %d\n", err
);
3270 static void ixgbe_free_irq(struct ixgbe_adapter
*adapter
)
3274 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
3275 free_irq(adapter
->pdev
->irq
, adapter
);
3279 if (!adapter
->msix_entries
)
3282 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++) {
3283 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[vector
];
3284 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
3286 /* free only the irqs that were actually requested */
3287 if (!q_vector
->rx
.ring
&& !q_vector
->tx
.ring
)
3290 /* clear the affinity_mask in the IRQ descriptor */
3291 irq_set_affinity_hint(entry
->vector
, NULL
);
3293 free_irq(entry
->vector
, q_vector
);
3296 free_irq(adapter
->msix_entries
[vector
].vector
, adapter
);
3300 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
3301 * @adapter: board private structure
3303 static inline void ixgbe_irq_disable(struct ixgbe_adapter
*adapter
)
3305 switch (adapter
->hw
.mac
.type
) {
3306 case ixgbe_mac_82598EB
:
3307 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, ~0);
3309 case ixgbe_mac_82599EB
:
3310 case ixgbe_mac_X540
:
3311 case ixgbe_mac_X550
:
3312 case ixgbe_mac_X550EM_x
:
3313 case ixgbe_mac_x550em_a
:
3314 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, 0xFFFF0000);
3315 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), ~0);
3316 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), ~0);
3321 IXGBE_WRITE_FLUSH(&adapter
->hw
);
3322 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
3325 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++)
3326 synchronize_irq(adapter
->msix_entries
[vector
].vector
);
3328 synchronize_irq(adapter
->msix_entries
[vector
++].vector
);
3330 synchronize_irq(adapter
->pdev
->irq
);
3335 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
3338 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter
*adapter
)
3340 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
3342 ixgbe_write_eitr(q_vector
);
3344 ixgbe_set_ivar(adapter
, 0, 0, 0);
3345 ixgbe_set_ivar(adapter
, 1, 0, 0);
3347 e_info(hw
, "Legacy interrupt IVAR setup done\n");
3351 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
3352 * @adapter: board private structure
3353 * @ring: structure containing ring specific data
3355 * Configure the Tx descriptor ring after a reset.
3357 void ixgbe_configure_tx_ring(struct ixgbe_adapter
*adapter
,
3358 struct ixgbe_ring
*ring
)
3360 struct ixgbe_hw
*hw
= &adapter
->hw
;
3361 u64 tdba
= ring
->dma
;
3363 u32 txdctl
= IXGBE_TXDCTL_ENABLE
;
3364 u8 reg_idx
= ring
->reg_idx
;
3366 /* disable queue to avoid issues while updating state */
3367 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), 0);
3368 IXGBE_WRITE_FLUSH(hw
);
3370 IXGBE_WRITE_REG(hw
, IXGBE_TDBAL(reg_idx
),
3371 (tdba
& DMA_BIT_MASK(32)));
3372 IXGBE_WRITE_REG(hw
, IXGBE_TDBAH(reg_idx
), (tdba
>> 32));
3373 IXGBE_WRITE_REG(hw
, IXGBE_TDLEN(reg_idx
),
3374 ring
->count
* sizeof(union ixgbe_adv_tx_desc
));
3375 IXGBE_WRITE_REG(hw
, IXGBE_TDH(reg_idx
), 0);
3376 IXGBE_WRITE_REG(hw
, IXGBE_TDT(reg_idx
), 0);
3377 ring
->tail
= adapter
->io_addr
+ IXGBE_TDT(reg_idx
);
3380 * set WTHRESH to encourage burst writeback, it should not be set
3381 * higher than 1 when:
3382 * - ITR is 0 as it could cause false TX hangs
3383 * - ITR is set to > 100k int/sec and BQL is enabled
3385 * In order to avoid issues WTHRESH + PTHRESH should always be equal
3386 * to or less than the number of on chip descriptors, which is
3389 if (!ring
->q_vector
|| (ring
->q_vector
->itr
< IXGBE_100K_ITR
))
3390 txdctl
|= 1u << 16; /* WTHRESH = 1 */
3392 txdctl
|= 8u << 16; /* WTHRESH = 8 */
3395 * Setting PTHRESH to 32 both improves performance
3396 * and avoids a TX hang with DFP enabled
3398 txdctl
|= (1u << 8) | /* HTHRESH = 1 */
3399 32; /* PTHRESH = 32 */
3401 /* reinitialize flowdirector state */
3402 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
3403 ring
->atr_sample_rate
= adapter
->atr_sample_rate
;
3404 ring
->atr_count
= 0;
3405 set_bit(__IXGBE_TX_FDIR_INIT_DONE
, &ring
->state
);
3407 ring
->atr_sample_rate
= 0;
3410 /* initialize XPS */
3411 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE
, &ring
->state
)) {
3412 struct ixgbe_q_vector
*q_vector
= ring
->q_vector
;
3415 netif_set_xps_queue(ring
->netdev
,
3416 &q_vector
->affinity_mask
,
3420 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &ring
->state
);
3422 /* reinitialize tx_buffer_info */
3423 memset(ring
->tx_buffer_info
, 0,
3424 sizeof(struct ixgbe_tx_buffer
) * ring
->count
);
3427 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), txdctl
);
3429 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3430 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3431 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3434 /* poll to verify queue is enabled */
3436 usleep_range(1000, 2000);
3437 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(reg_idx
));
3438 } while (--wait_loop
&& !(txdctl
& IXGBE_TXDCTL_ENABLE
));
3440 hw_dbg(hw
, "Could not enable Tx Queue %d\n", reg_idx
);
3443 static void ixgbe_setup_mtqc(struct ixgbe_adapter
*adapter
)
3445 struct ixgbe_hw
*hw
= &adapter
->hw
;
3447 u8 tcs
= netdev_get_num_tc(adapter
->netdev
);
3449 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
3452 /* disable the arbiter while setting MTQC */
3453 rttdcs
= IXGBE_READ_REG(hw
, IXGBE_RTTDCS
);
3454 rttdcs
|= IXGBE_RTTDCS_ARBDIS
;
3455 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
3457 /* set transmit pool layout */
3458 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
3459 mtqc
= IXGBE_MTQC_VT_ENA
;
3461 mtqc
|= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_8TC_8TQ
;
3463 mtqc
|= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_4TC_4TQ
;
3464 else if (adapter
->ring_feature
[RING_F_VMDQ
].mask
==
3465 IXGBE_82599_VMDQ_4Q_MASK
)
3466 mtqc
|= IXGBE_MTQC_32VF
;
3468 mtqc
|= IXGBE_MTQC_64VF
;
3471 mtqc
= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_8TC_8TQ
;
3473 mtqc
= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_4TC_4TQ
;
3475 mtqc
= IXGBE_MTQC_64Q_1PB
;
3478 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
, mtqc
);
3480 /* Enable Security TX Buffer IFG for multiple pb */
3482 u32 sectx
= IXGBE_READ_REG(hw
, IXGBE_SECTXMINIFG
);
3483 sectx
|= IXGBE_SECTX_DCB
;
3484 IXGBE_WRITE_REG(hw
, IXGBE_SECTXMINIFG
, sectx
);
3487 /* re-enable the arbiter */
3488 rttdcs
&= ~IXGBE_RTTDCS_ARBDIS
;
3489 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
3493 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
3494 * @adapter: board private structure
3496 * Configure the Tx unit of the MAC after a reset.
3498 static void ixgbe_configure_tx(struct ixgbe_adapter
*adapter
)
3500 struct ixgbe_hw
*hw
= &adapter
->hw
;
3504 ixgbe_setup_mtqc(adapter
);
3506 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
3507 /* DMATXCTL.EN must be before Tx queues are enabled */
3508 dmatxctl
= IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
);
3509 dmatxctl
|= IXGBE_DMATXCTL_TE
;
3510 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
, dmatxctl
);
3513 /* Setup the HW Tx Head and Tail descriptor pointers */
3514 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3515 ixgbe_configure_tx_ring(adapter
, adapter
->tx_ring
[i
]);
3516 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
3517 ixgbe_configure_tx_ring(adapter
, adapter
->xdp_ring
[i
]);
3520 static void ixgbe_enable_rx_drop(struct ixgbe_adapter
*adapter
,
3521 struct ixgbe_ring
*ring
)
3523 struct ixgbe_hw
*hw
= &adapter
->hw
;
3524 u8 reg_idx
= ring
->reg_idx
;
3525 u32 srrctl
= IXGBE_READ_REG(hw
, IXGBE_SRRCTL(reg_idx
));
3527 srrctl
|= IXGBE_SRRCTL_DROP_EN
;
3529 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3532 static void ixgbe_disable_rx_drop(struct ixgbe_adapter
*adapter
,
3533 struct ixgbe_ring
*ring
)
3535 struct ixgbe_hw
*hw
= &adapter
->hw
;
3536 u8 reg_idx
= ring
->reg_idx
;
3537 u32 srrctl
= IXGBE_READ_REG(hw
, IXGBE_SRRCTL(reg_idx
));
3539 srrctl
&= ~IXGBE_SRRCTL_DROP_EN
;
3541 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3544 #ifdef CONFIG_IXGBE_DCB
3545 void ixgbe_set_rx_drop_en(struct ixgbe_adapter
*adapter
)
3547 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter
*adapter
)
3551 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
3553 if (adapter
->ixgbe_ieee_pfc
)
3554 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
3557 * We should set the drop enable bit if:
3560 * Number of Rx queues > 1 and flow control is disabled
3562 * This allows us to avoid head of line blocking for security
3563 * and performance reasons.
3565 if (adapter
->num_vfs
|| (adapter
->num_rx_queues
> 1 &&
3566 !(adapter
->hw
.fc
.current_mode
& ixgbe_fc_tx_pause
) && !pfc_en
)) {
3567 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3568 ixgbe_enable_rx_drop(adapter
, adapter
->rx_ring
[i
]);
3570 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3571 ixgbe_disable_rx_drop(adapter
, adapter
->rx_ring
[i
]);
3575 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
3577 static void ixgbe_configure_srrctl(struct ixgbe_adapter
*adapter
,
3578 struct ixgbe_ring
*rx_ring
)
3580 struct ixgbe_hw
*hw
= &adapter
->hw
;
3582 u8 reg_idx
= rx_ring
->reg_idx
;
3584 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
3585 u16 mask
= adapter
->ring_feature
[RING_F_RSS
].mask
;
3588 * if VMDq is not active we must program one srrctl register
3589 * per RSS queue since we have enabled RDRXCTL.MVMEN
3594 /* configure header buffer length, needed for RSC */
3595 srrctl
= IXGBE_RX_HDR_SIZE
<< IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT
;
3597 /* configure the packet buffer length */
3598 if (test_bit(__IXGBE_RX_3K_BUFFER
, &rx_ring
->state
))
3599 srrctl
|= IXGBE_RXBUFFER_3K
>> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
3601 srrctl
|= IXGBE_RXBUFFER_2K
>> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
3603 /* configure descriptor type */
3604 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
3606 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3610 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries
3611 * @adapter: device handle
3613 * - 82598/82599/X540: 128
3614 * - X550(non-SRIOV mode): 512
3615 * - X550(SRIOV mode): 64
3617 u32
ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter
*adapter
)
3619 if (adapter
->hw
.mac
.type
< ixgbe_mac_X550
)
3621 else if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
3628 * ixgbe_store_key - Write the RSS key to HW
3629 * @adapter: device handle
3631 * Write the RSS key stored in adapter.rss_key to HW.
3633 void ixgbe_store_key(struct ixgbe_adapter
*adapter
)
3635 struct ixgbe_hw
*hw
= &adapter
->hw
;
3638 for (i
= 0; i
< 10; i
++)
3639 IXGBE_WRITE_REG(hw
, IXGBE_RSSRK(i
), adapter
->rss_key
[i
]);
3643 * ixgbe_init_rss_key - Initialize adapter RSS key
3644 * @adapter: device handle
3646 * Allocates and initializes the RSS key if it is not allocated.
3648 static inline int ixgbe_init_rss_key(struct ixgbe_adapter
*adapter
)
3652 if (!adapter
->rss_key
) {
3653 rss_key
= kzalloc(IXGBE_RSS_KEY_SIZE
, GFP_KERNEL
);
3654 if (unlikely(!rss_key
))
3657 netdev_rss_key_fill(rss_key
, IXGBE_RSS_KEY_SIZE
);
3658 adapter
->rss_key
= rss_key
;
3665 * ixgbe_store_reta - Write the RETA table to HW
3666 * @adapter: device handle
3668 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3670 void ixgbe_store_reta(struct ixgbe_adapter
*adapter
)
3672 u32 i
, reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3673 struct ixgbe_hw
*hw
= &adapter
->hw
;
3676 u8
*indir_tbl
= adapter
->rss_indir_tbl
;
3678 /* Fill out the redirection table as follows:
3679 * - 82598: 8 bit wide entries containing pair of 4 bit RSS
3681 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index
3682 * - X550: 8 bit wide entries containing 6 bit RSS index
3684 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
3685 indices_multi
= 0x11;
3687 indices_multi
= 0x1;
3689 /* Write redirection table to HW */
3690 for (i
= 0; i
< reta_entries
; i
++) {
3691 reta
|= indices_multi
* indir_tbl
[i
] << (i
& 0x3) * 8;
3694 IXGBE_WRITE_REG(hw
, IXGBE_RETA(i
>> 2), reta
);
3696 IXGBE_WRITE_REG(hw
, IXGBE_ERETA((i
>> 2) - 32),
3704 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode)
3705 * @adapter: device handle
3707 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3709 static void ixgbe_store_vfreta(struct ixgbe_adapter
*adapter
)
3711 u32 i
, reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3712 struct ixgbe_hw
*hw
= &adapter
->hw
;
3714 unsigned int pf_pool
= adapter
->num_vfs
;
3716 /* Write redirection table to HW */
3717 for (i
= 0; i
< reta_entries
; i
++) {
3718 vfreta
|= (u32
)adapter
->rss_indir_tbl
[i
] << (i
& 0x3) * 8;
3720 IXGBE_WRITE_REG(hw
, IXGBE_PFVFRETA(i
>> 2, pf_pool
),
3727 static void ixgbe_setup_reta(struct ixgbe_adapter
*adapter
)
3730 u32 reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3731 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
3733 /* Program table for at least 4 queues w/ SR-IOV so that VFs can
3734 * make full use of any rings they may have. We will use the
3735 * PSRTYPE register to control how many rings we use within the PF.
3737 if ((adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) && (rss_i
< 4))
3740 /* Fill out hash function seeds */
3741 ixgbe_store_key(adapter
);
3743 /* Fill out redirection table */
3744 memset(adapter
->rss_indir_tbl
, 0, sizeof(adapter
->rss_indir_tbl
));
3746 for (i
= 0, j
= 0; i
< reta_entries
; i
++, j
++) {
3750 adapter
->rss_indir_tbl
[i
] = j
;
3753 ixgbe_store_reta(adapter
);
3756 static void ixgbe_setup_vfreta(struct ixgbe_adapter
*adapter
)
3758 struct ixgbe_hw
*hw
= &adapter
->hw
;
3759 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
3760 unsigned int pf_pool
= adapter
->num_vfs
;
3763 /* Fill out hash function seeds */
3764 for (i
= 0; i
< 10; i
++)
3765 IXGBE_WRITE_REG(hw
, IXGBE_PFVFRSSRK(i
, pf_pool
),
3766 *(adapter
->rss_key
+ i
));
3768 /* Fill out the redirection table */
3769 for (i
= 0, j
= 0; i
< 64; i
++, j
++) {
3773 adapter
->rss_indir_tbl
[i
] = j
;
3776 ixgbe_store_vfreta(adapter
);
3779 static void ixgbe_setup_mrqc(struct ixgbe_adapter
*adapter
)
3781 struct ixgbe_hw
*hw
= &adapter
->hw
;
3782 u32 mrqc
= 0, rss_field
= 0, vfmrqc
= 0;
3785 /* Disable indicating checksum in descriptor, enables RSS hash */
3786 rxcsum
= IXGBE_READ_REG(hw
, IXGBE_RXCSUM
);
3787 rxcsum
|= IXGBE_RXCSUM_PCSD
;
3788 IXGBE_WRITE_REG(hw
, IXGBE_RXCSUM
, rxcsum
);
3790 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
3791 if (adapter
->ring_feature
[RING_F_RSS
].mask
)
3792 mrqc
= IXGBE_MRQC_RSSEN
;
3794 u8 tcs
= netdev_get_num_tc(adapter
->netdev
);
3796 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
3798 mrqc
= IXGBE_MRQC_VMDQRT8TCEN
; /* 8 TCs */
3800 mrqc
= IXGBE_MRQC_VMDQRT4TCEN
; /* 4 TCs */
3801 else if (adapter
->ring_feature
[RING_F_VMDQ
].mask
==
3802 IXGBE_82599_VMDQ_4Q_MASK
)
3803 mrqc
= IXGBE_MRQC_VMDQRSS32EN
;
3805 mrqc
= IXGBE_MRQC_VMDQRSS64EN
;
3807 /* Enable L3/L4 for Tx Switched packets */
3808 mrqc
|= IXGBE_MRQC_L3L4TXSWEN
;
3811 mrqc
= IXGBE_MRQC_RTRSS8TCEN
;
3813 mrqc
= IXGBE_MRQC_RTRSS4TCEN
;
3815 mrqc
= IXGBE_MRQC_RSSEN
;
3819 /* Perform hash on these packet types */
3820 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV4
|
3821 IXGBE_MRQC_RSS_FIELD_IPV4_TCP
|
3822 IXGBE_MRQC_RSS_FIELD_IPV6
|
3823 IXGBE_MRQC_RSS_FIELD_IPV6_TCP
;
3825 if (adapter
->flags2
& IXGBE_FLAG2_RSS_FIELD_IPV4_UDP
)
3826 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV4_UDP
;
3827 if (adapter
->flags2
& IXGBE_FLAG2_RSS_FIELD_IPV6_UDP
)
3828 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV6_UDP
;
3830 if ((hw
->mac
.type
>= ixgbe_mac_X550
) &&
3831 (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)) {
3832 unsigned int pf_pool
= adapter
->num_vfs
;
3834 /* Enable VF RSS mode */
3835 mrqc
|= IXGBE_MRQC_MULTIPLE_RSS
;
3836 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
3838 /* Setup RSS through the VF registers */
3839 ixgbe_setup_vfreta(adapter
);
3840 vfmrqc
= IXGBE_MRQC_RSSEN
;
3841 vfmrqc
|= rss_field
;
3842 IXGBE_WRITE_REG(hw
, IXGBE_PFVFMRQC(pf_pool
), vfmrqc
);
3844 ixgbe_setup_reta(adapter
);
3846 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
3851 * ixgbe_configure_rscctl - enable RSC for the indicated ring
3852 * @adapter: address of board private structure
3853 * @index: index of ring to set
3855 static void ixgbe_configure_rscctl(struct ixgbe_adapter
*adapter
,
3856 struct ixgbe_ring
*ring
)
3858 struct ixgbe_hw
*hw
= &adapter
->hw
;
3860 u8 reg_idx
= ring
->reg_idx
;
3862 if (!ring_is_rsc_enabled(ring
))
3865 rscctrl
= IXGBE_READ_REG(hw
, IXGBE_RSCCTL(reg_idx
));
3866 rscctrl
|= IXGBE_RSCCTL_RSCEN
;
3868 * we must limit the number of descriptors so that the
3869 * total size of max desc * buf_len is not greater
3872 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
3873 IXGBE_WRITE_REG(hw
, IXGBE_RSCCTL(reg_idx
), rscctrl
);
3876 #define IXGBE_MAX_RX_DESC_POLL 10
3877 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter
*adapter
,
3878 struct ixgbe_ring
*ring
)
3880 struct ixgbe_hw
*hw
= &adapter
->hw
;
3881 int wait_loop
= IXGBE_MAX_RX_DESC_POLL
;
3883 u8 reg_idx
= ring
->reg_idx
;
3885 if (ixgbe_removed(hw
->hw_addr
))
3887 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3888 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3889 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3893 usleep_range(1000, 2000);
3894 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3895 } while (--wait_loop
&& !(rxdctl
& IXGBE_RXDCTL_ENABLE
));
3898 e_err(drv
, "RXDCTL.ENABLE on Rx queue %d not set within "
3899 "the polling period\n", reg_idx
);
3903 void ixgbe_disable_rx_queue(struct ixgbe_adapter
*adapter
,
3904 struct ixgbe_ring
*ring
)
3906 struct ixgbe_hw
*hw
= &adapter
->hw
;
3907 int wait_loop
= IXGBE_MAX_RX_DESC_POLL
;
3909 u8 reg_idx
= ring
->reg_idx
;
3911 if (ixgbe_removed(hw
->hw_addr
))
3913 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3914 rxdctl
&= ~IXGBE_RXDCTL_ENABLE
;
3916 /* write value back with RXDCTL.ENABLE bit cleared */
3917 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(reg_idx
), rxdctl
);
3919 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3920 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3923 /* the hardware may take up to 100us to really disable the rx queue */
3926 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3927 } while (--wait_loop
&& (rxdctl
& IXGBE_RXDCTL_ENABLE
));
3930 e_err(drv
, "RXDCTL.ENABLE on Rx queue %d not cleared within "
3931 "the polling period\n", reg_idx
);
3935 void ixgbe_configure_rx_ring(struct ixgbe_adapter
*adapter
,
3936 struct ixgbe_ring
*ring
)
3938 struct ixgbe_hw
*hw
= &adapter
->hw
;
3939 union ixgbe_adv_rx_desc
*rx_desc
;
3940 u64 rdba
= ring
->dma
;
3942 u8 reg_idx
= ring
->reg_idx
;
3944 /* disable queue to avoid issues while updating state */
3945 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3946 ixgbe_disable_rx_queue(adapter
, ring
);
3948 IXGBE_WRITE_REG(hw
, IXGBE_RDBAL(reg_idx
), (rdba
& DMA_BIT_MASK(32)));
3949 IXGBE_WRITE_REG(hw
, IXGBE_RDBAH(reg_idx
), (rdba
>> 32));
3950 IXGBE_WRITE_REG(hw
, IXGBE_RDLEN(reg_idx
),
3951 ring
->count
* sizeof(union ixgbe_adv_rx_desc
));
3952 /* Force flushing of IXGBE_RDLEN to prevent MDD */
3953 IXGBE_WRITE_FLUSH(hw
);
3955 IXGBE_WRITE_REG(hw
, IXGBE_RDH(reg_idx
), 0);
3956 IXGBE_WRITE_REG(hw
, IXGBE_RDT(reg_idx
), 0);
3957 ring
->tail
= adapter
->io_addr
+ IXGBE_RDT(reg_idx
);
3959 ixgbe_configure_srrctl(adapter
, ring
);
3960 ixgbe_configure_rscctl(adapter
, ring
);
3962 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
3964 * enable cache line friendly hardware writes:
3965 * PTHRESH=32 descriptors (half the internal cache),
3966 * this also removes ugly rx_no_buffer_count increment
3967 * HTHRESH=4 descriptors (to minimize latency on fetch)
3968 * WTHRESH=8 burst writeback up to two cache lines
3970 rxdctl
&= ~0x3FFFFF;
3972 #if (PAGE_SIZE < 8192)
3974 rxdctl
&= ~(IXGBE_RXDCTL_RLPMLMASK
|
3975 IXGBE_RXDCTL_RLPML_EN
);
3977 /* Limit the maximum frame size so we don't overrun the skb */
3978 if (ring_uses_build_skb(ring
) &&
3979 !test_bit(__IXGBE_RX_3K_BUFFER
, &ring
->state
))
3980 rxdctl
|= IXGBE_MAX_2K_FRAME_BUILD_SKB
|
3981 IXGBE_RXDCTL_RLPML_EN
;
3985 /* initialize rx_buffer_info */
3986 memset(ring
->rx_buffer_info
, 0,
3987 sizeof(struct ixgbe_rx_buffer
) * ring
->count
);
3989 /* initialize Rx descriptor 0 */
3990 rx_desc
= IXGBE_RX_DESC(ring
, 0);
3991 rx_desc
->wb
.upper
.length
= 0;
3993 /* enable receive descriptor ring */
3994 rxdctl
|= IXGBE_RXDCTL_ENABLE
;
3995 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(reg_idx
), rxdctl
);
3997 ixgbe_rx_desc_queue_enable(adapter
, ring
);
3998 ixgbe_alloc_rx_buffers(ring
, ixgbe_desc_unused(ring
));
4001 static void ixgbe_setup_psrtype(struct ixgbe_adapter
*adapter
)
4003 struct ixgbe_hw
*hw
= &adapter
->hw
;
4004 int rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
4007 /* PSRTYPE must be initialized in non 82598 adapters */
4008 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
4009 IXGBE_PSRTYPE_UDPHDR
|
4010 IXGBE_PSRTYPE_IPV4HDR
|
4011 IXGBE_PSRTYPE_L2HDR
|
4012 IXGBE_PSRTYPE_IPV6HDR
;
4014 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4018 psrtype
|= 2u << 29;
4020 psrtype
|= 1u << 29;
4022 for_each_set_bit(pool
, &adapter
->fwd_bitmask
, 32)
4023 IXGBE_WRITE_REG(hw
, IXGBE_PSRTYPE(VMDQ_P(pool
)), psrtype
);
4026 static void ixgbe_configure_virtualization(struct ixgbe_adapter
*adapter
)
4028 struct ixgbe_hw
*hw
= &adapter
->hw
;
4029 u32 reg_offset
, vf_shift
;
4030 u32 gcr_ext
, vmdctl
;
4033 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
4036 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VT_CTL
);
4037 vmdctl
|= IXGBE_VMD_CTL_VMDQ_EN
;
4038 vmdctl
&= ~IXGBE_VT_CTL_POOL_MASK
;
4039 vmdctl
|= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT
;
4040 vmdctl
|= IXGBE_VT_CTL_REPLEN
;
4041 IXGBE_WRITE_REG(hw
, IXGBE_VT_CTL
, vmdctl
);
4043 vf_shift
= VMDQ_P(0) % 32;
4044 reg_offset
= (VMDQ_P(0) >= 32) ? 1 : 0;
4046 /* Enable only the PF's pool for Tx/Rx */
4047 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
), GENMASK(31, vf_shift
));
4048 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
^ 1), reg_offset
- 1);
4049 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
), GENMASK(31, vf_shift
));
4050 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
^ 1), reg_offset
- 1);
4051 if (adapter
->bridge_mode
== BRIDGE_MODE_VEB
)
4052 IXGBE_WRITE_REG(hw
, IXGBE_PFDTXGSWC
, IXGBE_PFDTXGSWC_VT_LBEN
);
4054 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
4055 hw
->mac
.ops
.set_vmdq(hw
, 0, VMDQ_P(0));
4057 /* clear VLAN promisc flag so VFTA will be updated if necessary */
4058 adapter
->flags2
&= ~IXGBE_FLAG2_VLAN_PROMISC
;
4061 * Set up VF register offsets for selected VT Mode,
4062 * i.e. 32 or 64 VFs for SR-IOV
4064 switch (adapter
->ring_feature
[RING_F_VMDQ
].mask
) {
4065 case IXGBE_82599_VMDQ_8Q_MASK
:
4066 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_16
;
4068 case IXGBE_82599_VMDQ_4Q_MASK
:
4069 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_32
;
4072 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_64
;
4076 IXGBE_WRITE_REG(hw
, IXGBE_GCR_EXT
, gcr_ext
);
4078 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
4079 /* configure spoof checking */
4080 ixgbe_ndo_set_vf_spoofchk(adapter
->netdev
, i
,
4081 adapter
->vfinfo
[i
].spoofchk_enabled
);
4083 /* Enable/Disable RSS query feature */
4084 ixgbe_ndo_set_vf_rss_query_en(adapter
->netdev
, i
,
4085 adapter
->vfinfo
[i
].rss_query_enabled
);
4089 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter
*adapter
)
4091 struct ixgbe_hw
*hw
= &adapter
->hw
;
4092 struct net_device
*netdev
= adapter
->netdev
;
4093 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4094 struct ixgbe_ring
*rx_ring
;
4099 /* adjust max frame to be able to do baby jumbo for FCoE */
4100 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) &&
4101 (max_frame
< IXGBE_FCOE_JUMBO_FRAME_SIZE
))
4102 max_frame
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
4104 #endif /* IXGBE_FCOE */
4106 /* adjust max frame to be at least the size of a standard frame */
4107 if (max_frame
< (ETH_FRAME_LEN
+ ETH_FCS_LEN
))
4108 max_frame
= (ETH_FRAME_LEN
+ ETH_FCS_LEN
);
4110 mhadd
= IXGBE_READ_REG(hw
, IXGBE_MHADD
);
4111 if (max_frame
!= (mhadd
>> IXGBE_MHADD_MFS_SHIFT
)) {
4112 mhadd
&= ~IXGBE_MHADD_MFS_MASK
;
4113 mhadd
|= max_frame
<< IXGBE_MHADD_MFS_SHIFT
;
4115 IXGBE_WRITE_REG(hw
, IXGBE_MHADD
, mhadd
);
4118 hlreg0
= IXGBE_READ_REG(hw
, IXGBE_HLREG0
);
4119 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
4120 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
4121 IXGBE_WRITE_REG(hw
, IXGBE_HLREG0
, hlreg0
);
4124 * Setup the HW Rx Head and Tail Descriptor Pointers and
4125 * the Base and Length of the Rx Descriptor Ring
4127 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4128 rx_ring
= adapter
->rx_ring
[i
];
4130 clear_ring_rsc_enabled(rx_ring
);
4131 clear_bit(__IXGBE_RX_3K_BUFFER
, &rx_ring
->state
);
4132 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED
, &rx_ring
->state
);
4134 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
4135 set_ring_rsc_enabled(rx_ring
);
4137 if (test_bit(__IXGBE_RX_FCOE
, &rx_ring
->state
))
4138 set_bit(__IXGBE_RX_3K_BUFFER
, &rx_ring
->state
);
4140 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED
, &rx_ring
->state
);
4141 if (adapter
->flags2
& IXGBE_FLAG2_RX_LEGACY
)
4144 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED
, &rx_ring
->state
);
4146 #if (PAGE_SIZE < 8192)
4147 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
4148 set_bit(__IXGBE_RX_3K_BUFFER
, &rx_ring
->state
);
4150 if (IXGBE_2K_TOO_SMALL_WITH_PADDING
||
4151 (max_frame
> (ETH_FRAME_LEN
+ ETH_FCS_LEN
)))
4152 set_bit(__IXGBE_RX_3K_BUFFER
, &rx_ring
->state
);
4157 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter
*adapter
)
4159 struct ixgbe_hw
*hw
= &adapter
->hw
;
4160 u32 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
4162 switch (hw
->mac
.type
) {
4163 case ixgbe_mac_82598EB
:
4165 * For VMDq support of different descriptor types or
4166 * buffer sizes through the use of multiple SRRCTL
4167 * registers, RDRXCTL.MVMEN must be set to 1
4169 * also, the manual doesn't mention it clearly but DCA hints
4170 * will only use queue 0's tags unless this bit is set. Side
4171 * effects of setting this bit are only that SRRCTL must be
4172 * fully programmed [0..15]
4174 rdrxctl
|= IXGBE_RDRXCTL_MVMEN
;
4176 case ixgbe_mac_X550
:
4177 case ixgbe_mac_X550EM_x
:
4178 case ixgbe_mac_x550em_a
:
4179 if (adapter
->num_vfs
)
4180 rdrxctl
|= IXGBE_RDRXCTL_PSP
;
4182 case ixgbe_mac_82599EB
:
4183 case ixgbe_mac_X540
:
4184 /* Disable RSC for ACK packets */
4185 IXGBE_WRITE_REG(hw
, IXGBE_RSCDBU
,
4186 (IXGBE_RSCDBU_RSCACKDIS
| IXGBE_READ_REG(hw
, IXGBE_RSCDBU
)));
4187 rdrxctl
&= ~IXGBE_RDRXCTL_RSCFRSTSIZE
;
4188 /* hardware requires some bits to be set by default */
4189 rdrxctl
|= (IXGBE_RDRXCTL_RSCACKC
| IXGBE_RDRXCTL_FCOE_WRFIX
);
4190 rdrxctl
|= IXGBE_RDRXCTL_CRCSTRIP
;
4193 /* We should do nothing since we don't know this hardware */
4197 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
4201 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
4202 * @adapter: board private structure
4204 * Configure the Rx unit of the MAC after a reset.
4206 static void ixgbe_configure_rx(struct ixgbe_adapter
*adapter
)
4208 struct ixgbe_hw
*hw
= &adapter
->hw
;
4212 /* disable receives while setting up the descriptors */
4213 hw
->mac
.ops
.disable_rx(hw
);
4215 ixgbe_setup_psrtype(adapter
);
4216 ixgbe_setup_rdrxctl(adapter
);
4219 rfctl
= IXGBE_READ_REG(hw
, IXGBE_RFCTL
);
4220 rfctl
&= ~IXGBE_RFCTL_RSC_DIS
;
4221 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
))
4222 rfctl
|= IXGBE_RFCTL_RSC_DIS
;
4224 /* disable NFS filtering */
4225 rfctl
|= (IXGBE_RFCTL_NFSW_DIS
| IXGBE_RFCTL_NFSR_DIS
);
4226 IXGBE_WRITE_REG(hw
, IXGBE_RFCTL
, rfctl
);
4228 /* Program registers for the distribution of queues */
4229 ixgbe_setup_mrqc(adapter
);
4231 /* set_rx_buffer_len must be called before ring initialization */
4232 ixgbe_set_rx_buffer_len(adapter
);
4235 * Setup the HW Rx Head and Tail Descriptor Pointers and
4236 * the Base and Length of the Rx Descriptor Ring
4238 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
4239 ixgbe_configure_rx_ring(adapter
, adapter
->rx_ring
[i
]);
4241 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
4242 /* disable drop enable for 82598 parts */
4243 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4244 rxctrl
|= IXGBE_RXCTRL_DMBYPS
;
4246 /* enable all receives */
4247 rxctrl
|= IXGBE_RXCTRL_RXEN
;
4248 hw
->mac
.ops
.enable_rx_dma(hw
, rxctrl
);
4251 static int ixgbe_vlan_rx_add_vid(struct net_device
*netdev
,
4252 __be16 proto
, u16 vid
)
4254 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4255 struct ixgbe_hw
*hw
= &adapter
->hw
;
4257 /* add VID to filter table */
4258 if (!vid
|| !(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4259 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, VMDQ_P(0), true, !!vid
);
4261 set_bit(vid
, adapter
->active_vlans
);
4266 static int ixgbe_find_vlvf_entry(struct ixgbe_hw
*hw
, u32 vlan
)
4271 /* short cut the special case */
4275 /* Search for the vlan id in the VLVF entries */
4276 for (idx
= IXGBE_VLVF_ENTRIES
; --idx
;) {
4277 vlvf
= IXGBE_READ_REG(hw
, IXGBE_VLVF(idx
));
4278 if ((vlvf
& VLAN_VID_MASK
) == vlan
)
4285 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter
*adapter
, u32 vid
)
4287 struct ixgbe_hw
*hw
= &adapter
->hw
;
4291 idx
= ixgbe_find_vlvf_entry(hw
, vid
);
4295 /* See if any other pools are set for this VLAN filter
4296 * entry other than the PF.
4298 word
= idx
* 2 + (VMDQ_P(0) / 32);
4299 bits
= ~BIT(VMDQ_P(0) % 32);
4300 bits
&= IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
));
4302 /* Disable the filter so this falls into the default pool. */
4303 if (!bits
&& !IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
^ 1))) {
4304 if (!(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4305 IXGBE_WRITE_REG(hw
, IXGBE_VLVFB(word
), 0);
4306 IXGBE_WRITE_REG(hw
, IXGBE_VLVF(idx
), 0);
4310 static int ixgbe_vlan_rx_kill_vid(struct net_device
*netdev
,
4311 __be16 proto
, u16 vid
)
4313 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4314 struct ixgbe_hw
*hw
= &adapter
->hw
;
4316 /* remove VID from filter table */
4317 if (vid
&& !(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4318 hw
->mac
.ops
.set_vfta(hw
, vid
, VMDQ_P(0), false, true);
4320 clear_bit(vid
, adapter
->active_vlans
);
4326 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
4327 * @adapter: driver data
4329 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter
*adapter
)
4331 struct ixgbe_hw
*hw
= &adapter
->hw
;
4335 switch (hw
->mac
.type
) {
4336 case ixgbe_mac_82598EB
:
4337 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4338 vlnctrl
&= ~IXGBE_VLNCTRL_VME
;
4339 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4341 case ixgbe_mac_82599EB
:
4342 case ixgbe_mac_X540
:
4343 case ixgbe_mac_X550
:
4344 case ixgbe_mac_X550EM_x
:
4345 case ixgbe_mac_x550em_a
:
4346 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4347 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
4349 if (ring
->l2_accel_priv
)
4352 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
4353 vlnctrl
&= ~IXGBE_RXDCTL_VME
;
4354 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
4363 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
4364 * @adapter: driver data
4366 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter
*adapter
)
4368 struct ixgbe_hw
*hw
= &adapter
->hw
;
4372 switch (hw
->mac
.type
) {
4373 case ixgbe_mac_82598EB
:
4374 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4375 vlnctrl
|= IXGBE_VLNCTRL_VME
;
4376 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4378 case ixgbe_mac_82599EB
:
4379 case ixgbe_mac_X540
:
4380 case ixgbe_mac_X550
:
4381 case ixgbe_mac_X550EM_x
:
4382 case ixgbe_mac_x550em_a
:
4383 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4384 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
4386 if (ring
->l2_accel_priv
)
4389 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
4390 vlnctrl
|= IXGBE_RXDCTL_VME
;
4391 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
4399 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter
*adapter
)
4401 struct ixgbe_hw
*hw
= &adapter
->hw
;
4404 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4406 if (adapter
->flags
& IXGBE_FLAG_VMDQ_ENABLED
) {
4407 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
4408 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
4409 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4411 vlnctrl
&= ~IXGBE_VLNCTRL_VFE
;
4412 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4416 /* Nothing to do for 82598 */
4417 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4420 /* We are already in VLAN promisc, nothing to do */
4421 if (adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
)
4424 /* Set flag so we don't redo unnecessary work */
4425 adapter
->flags2
|= IXGBE_FLAG2_VLAN_PROMISC
;
4427 /* Add PF to all active pools */
4428 for (i
= IXGBE_VLVF_ENTRIES
; --i
;) {
4429 u32 reg_offset
= IXGBE_VLVFB(i
* 2 + VMDQ_P(0) / 32);
4430 u32 vlvfb
= IXGBE_READ_REG(hw
, reg_offset
);
4432 vlvfb
|= BIT(VMDQ_P(0) % 32);
4433 IXGBE_WRITE_REG(hw
, reg_offset
, vlvfb
);
4436 /* Set all bits in the VLAN filter table array */
4437 for (i
= hw
->mac
.vft_size
; i
--;)
4438 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(i
), ~0U);
4441 #define VFTA_BLOCK_SIZE 8
4442 static void ixgbe_scrub_vfta(struct ixgbe_adapter
*adapter
, u32 vfta_offset
)
4444 struct ixgbe_hw
*hw
= &adapter
->hw
;
4445 u32 vfta
[VFTA_BLOCK_SIZE
] = { 0 };
4446 u32 vid_start
= vfta_offset
* 32;
4447 u32 vid_end
= vid_start
+ (VFTA_BLOCK_SIZE
* 32);
4448 u32 i
, vid
, word
, bits
;
4450 for (i
= IXGBE_VLVF_ENTRIES
; --i
;) {
4451 u32 vlvf
= IXGBE_READ_REG(hw
, IXGBE_VLVF(i
));
4453 /* pull VLAN ID from VLVF */
4454 vid
= vlvf
& VLAN_VID_MASK
;
4456 /* only concern outselves with a certain range */
4457 if (vid
< vid_start
|| vid
>= vid_end
)
4461 /* record VLAN ID in VFTA */
4462 vfta
[(vid
- vid_start
) / 32] |= BIT(vid
% 32);
4464 /* if PF is part of this then continue */
4465 if (test_bit(vid
, adapter
->active_vlans
))
4469 /* remove PF from the pool */
4470 word
= i
* 2 + VMDQ_P(0) / 32;
4471 bits
= ~BIT(VMDQ_P(0) % 32);
4472 bits
&= IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
));
4473 IXGBE_WRITE_REG(hw
, IXGBE_VLVFB(word
), bits
);
4476 /* extract values from active_vlans and write back to VFTA */
4477 for (i
= VFTA_BLOCK_SIZE
; i
--;) {
4478 vid
= (vfta_offset
+ i
) * 32;
4479 word
= vid
/ BITS_PER_LONG
;
4480 bits
= vid
% BITS_PER_LONG
;
4482 vfta
[i
] |= adapter
->active_vlans
[word
] >> bits
;
4484 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(vfta_offset
+ i
), vfta
[i
]);
4488 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter
*adapter
)
4490 struct ixgbe_hw
*hw
= &adapter
->hw
;
4493 /* Set VLAN filtering to enabled */
4494 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4495 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
4496 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4498 if (!(adapter
->flags
& IXGBE_FLAG_VMDQ_ENABLED
) ||
4499 hw
->mac
.type
== ixgbe_mac_82598EB
)
4502 /* We are not in VLAN promisc, nothing to do */
4503 if (!(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4506 /* Set flag so we don't redo unnecessary work */
4507 adapter
->flags2
&= ~IXGBE_FLAG2_VLAN_PROMISC
;
4509 for (i
= 0; i
< hw
->mac
.vft_size
; i
+= VFTA_BLOCK_SIZE
)
4510 ixgbe_scrub_vfta(adapter
, i
);
4513 static void ixgbe_restore_vlan(struct ixgbe_adapter
*adapter
)
4517 ixgbe_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
4519 for_each_set_bit_from(vid
, adapter
->active_vlans
, VLAN_N_VID
)
4520 ixgbe_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
4524 * ixgbe_write_mc_addr_list - write multicast addresses to MTA
4525 * @netdev: network interface device structure
4527 * Writes multicast address list to the MTA hash table.
4528 * Returns: -ENOMEM on failure
4529 * 0 on no addresses written
4530 * X on writing X addresses to MTA
4532 static int ixgbe_write_mc_addr_list(struct net_device
*netdev
)
4534 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4535 struct ixgbe_hw
*hw
= &adapter
->hw
;
4537 if (!netif_running(netdev
))
4540 if (hw
->mac
.ops
.update_mc_addr_list
)
4541 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
4545 #ifdef CONFIG_PCI_IOV
4546 ixgbe_restore_vf_multicasts(adapter
);
4549 return netdev_mc_count(netdev
);
4552 #ifdef CONFIG_PCI_IOV
4553 void ixgbe_full_sync_mac_table(struct ixgbe_adapter
*adapter
)
4555 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4556 struct ixgbe_hw
*hw
= &adapter
->hw
;
4559 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4560 mac_table
->state
&= ~IXGBE_MAC_STATE_MODIFIED
;
4562 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4563 hw
->mac
.ops
.set_rar(hw
, i
,
4568 hw
->mac
.ops
.clear_rar(hw
, i
);
4573 static void ixgbe_sync_mac_table(struct ixgbe_adapter
*adapter
)
4575 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4576 struct ixgbe_hw
*hw
= &adapter
->hw
;
4579 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4580 if (!(mac_table
->state
& IXGBE_MAC_STATE_MODIFIED
))
4583 mac_table
->state
&= ~IXGBE_MAC_STATE_MODIFIED
;
4585 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4586 hw
->mac
.ops
.set_rar(hw
, i
,
4591 hw
->mac
.ops
.clear_rar(hw
, i
);
4595 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter
*adapter
)
4597 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4598 struct ixgbe_hw
*hw
= &adapter
->hw
;
4601 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4602 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
;
4603 mac_table
->state
&= ~IXGBE_MAC_STATE_IN_USE
;
4606 ixgbe_sync_mac_table(adapter
);
4609 static int ixgbe_available_rars(struct ixgbe_adapter
*adapter
, u16 pool
)
4611 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4612 struct ixgbe_hw
*hw
= &adapter
->hw
;
4615 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4616 /* do not count default RAR as available */
4617 if (mac_table
->state
& IXGBE_MAC_STATE_DEFAULT
)
4620 /* only count unused and addresses that belong to us */
4621 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
) {
4622 if (mac_table
->pool
!= pool
)
4632 /* this function destroys the first RAR entry */
4633 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter
*adapter
)
4635 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4636 struct ixgbe_hw
*hw
= &adapter
->hw
;
4638 memcpy(&mac_table
->addr
, hw
->mac
.addr
, ETH_ALEN
);
4639 mac_table
->pool
= VMDQ_P(0);
4641 mac_table
->state
= IXGBE_MAC_STATE_DEFAULT
| IXGBE_MAC_STATE_IN_USE
;
4643 hw
->mac
.ops
.set_rar(hw
, 0, mac_table
->addr
, mac_table
->pool
,
4647 int ixgbe_add_mac_filter(struct ixgbe_adapter
*adapter
,
4648 const u8
*addr
, u16 pool
)
4650 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4651 struct ixgbe_hw
*hw
= &adapter
->hw
;
4654 if (is_zero_ether_addr(addr
))
4657 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4658 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4661 ether_addr_copy(mac_table
->addr
, addr
);
4662 mac_table
->pool
= pool
;
4664 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
|
4665 IXGBE_MAC_STATE_IN_USE
;
4667 ixgbe_sync_mac_table(adapter
);
4675 int ixgbe_del_mac_filter(struct ixgbe_adapter
*adapter
,
4676 const u8
*addr
, u16 pool
)
4678 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4679 struct ixgbe_hw
*hw
= &adapter
->hw
;
4682 if (is_zero_ether_addr(addr
))
4685 /* search table for addr, if found clear IN_USE flag and sync */
4686 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4687 /* we can only delete an entry if it is in use */
4688 if (!(mac_table
->state
& IXGBE_MAC_STATE_IN_USE
))
4690 /* we only care about entries that belong to the given pool */
4691 if (mac_table
->pool
!= pool
)
4693 /* we only care about a specific MAC address */
4694 if (!ether_addr_equal(addr
, mac_table
->addr
))
4697 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
;
4698 mac_table
->state
&= ~IXGBE_MAC_STATE_IN_USE
;
4700 ixgbe_sync_mac_table(adapter
);
4708 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
4709 * @netdev: network interface device structure
4711 * Writes unicast address list to the RAR table.
4712 * Returns: -ENOMEM on failure/insufficient address space
4713 * 0 on no addresses written
4714 * X on writing X addresses to the RAR table
4716 static int ixgbe_write_uc_addr_list(struct net_device
*netdev
, int vfn
)
4718 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4721 /* return ENOMEM indicating insufficient memory for addresses */
4722 if (netdev_uc_count(netdev
) > ixgbe_available_rars(adapter
, vfn
))
4725 if (!netdev_uc_empty(netdev
)) {
4726 struct netdev_hw_addr
*ha
;
4727 netdev_for_each_uc_addr(ha
, netdev
) {
4728 ixgbe_del_mac_filter(adapter
, ha
->addr
, vfn
);
4729 ixgbe_add_mac_filter(adapter
, ha
->addr
, vfn
);
4736 static int ixgbe_uc_sync(struct net_device
*netdev
, const unsigned char *addr
)
4738 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4741 ret
= ixgbe_add_mac_filter(adapter
, addr
, VMDQ_P(0));
4743 return min_t(int, ret
, 0);
4746 static int ixgbe_uc_unsync(struct net_device
*netdev
, const unsigned char *addr
)
4748 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4750 ixgbe_del_mac_filter(adapter
, addr
, VMDQ_P(0));
4756 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
4757 * @netdev: network interface device structure
4759 * The set_rx_method entry point is called whenever the unicast/multicast
4760 * address list or the network interface flags are updated. This routine is
4761 * responsible for configuring the hardware for proper unicast, multicast and
4764 void ixgbe_set_rx_mode(struct net_device
*netdev
)
4766 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4767 struct ixgbe_hw
*hw
= &adapter
->hw
;
4768 u32 fctrl
, vmolr
= IXGBE_VMOLR_BAM
| IXGBE_VMOLR_AUPE
;
4769 netdev_features_t features
= netdev
->features
;
4772 /* Check for Promiscuous and All Multicast modes */
4773 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
4775 /* set all bits that we expect to always be set */
4776 fctrl
&= ~IXGBE_FCTRL_SBP
; /* disable store-bad-packets */
4777 fctrl
|= IXGBE_FCTRL_BAM
;
4778 fctrl
|= IXGBE_FCTRL_DPF
; /* discard pause frames when FC enabled */
4779 fctrl
|= IXGBE_FCTRL_PMCF
;
4781 /* clear the bits we are changing the status of */
4782 fctrl
&= ~(IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
4783 if (netdev
->flags
& IFF_PROMISC
) {
4784 hw
->addr_ctrl
.user_set_promisc
= true;
4785 fctrl
|= (IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
4786 vmolr
|= IXGBE_VMOLR_MPE
;
4787 features
&= ~NETIF_F_HW_VLAN_CTAG_FILTER
;
4789 if (netdev
->flags
& IFF_ALLMULTI
) {
4790 fctrl
|= IXGBE_FCTRL_MPE
;
4791 vmolr
|= IXGBE_VMOLR_MPE
;
4793 hw
->addr_ctrl
.user_set_promisc
= false;
4797 * Write addresses to available RAR registers, if there is not
4798 * sufficient space to store all the addresses then enable
4799 * unicast promiscuous mode
4801 if (__dev_uc_sync(netdev
, ixgbe_uc_sync
, ixgbe_uc_unsync
)) {
4802 fctrl
|= IXGBE_FCTRL_UPE
;
4803 vmolr
|= IXGBE_VMOLR_ROPE
;
4806 /* Write addresses to the MTA, if the attempt fails
4807 * then we should just turn on promiscuous mode so
4808 * that we can at least receive multicast traffic
4810 count
= ixgbe_write_mc_addr_list(netdev
);
4812 fctrl
|= IXGBE_FCTRL_MPE
;
4813 vmolr
|= IXGBE_VMOLR_MPE
;
4815 vmolr
|= IXGBE_VMOLR_ROMPE
;
4818 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
4819 vmolr
|= IXGBE_READ_REG(hw
, IXGBE_VMOLR(VMDQ_P(0))) &
4820 ~(IXGBE_VMOLR_MPE
| IXGBE_VMOLR_ROMPE
|
4822 IXGBE_WRITE_REG(hw
, IXGBE_VMOLR(VMDQ_P(0)), vmolr
);
4825 /* This is useful for sniffing bad packets. */
4826 if (features
& NETIF_F_RXALL
) {
4827 /* UPE and MPE will be handled by normal PROMISC logic
4828 * in e1000e_set_rx_mode */
4829 fctrl
|= (IXGBE_FCTRL_SBP
| /* Receive bad packets */
4830 IXGBE_FCTRL_BAM
| /* RX All Bcast Pkts */
4831 IXGBE_FCTRL_PMCF
); /* RX All MAC Ctrl Pkts */
4833 fctrl
&= ~(IXGBE_FCTRL_DPF
);
4834 /* NOTE: VLAN filtering is disabled by setting PROMISC */
4837 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
4839 if (features
& NETIF_F_HW_VLAN_CTAG_RX
)
4840 ixgbe_vlan_strip_enable(adapter
);
4842 ixgbe_vlan_strip_disable(adapter
);
4844 if (features
& NETIF_F_HW_VLAN_CTAG_FILTER
)
4845 ixgbe_vlan_promisc_disable(adapter
);
4847 ixgbe_vlan_promisc_enable(adapter
);
4850 static void ixgbe_napi_enable_all(struct ixgbe_adapter
*adapter
)
4854 for (q_idx
= 0; q_idx
< adapter
->num_q_vectors
; q_idx
++)
4855 napi_enable(&adapter
->q_vector
[q_idx
]->napi
);
4858 static void ixgbe_napi_disable_all(struct ixgbe_adapter
*adapter
)
4862 for (q_idx
= 0; q_idx
< adapter
->num_q_vectors
; q_idx
++)
4863 napi_disable(&adapter
->q_vector
[q_idx
]->napi
);
4866 static void ixgbe_clear_udp_tunnel_port(struct ixgbe_adapter
*adapter
, u32 mask
)
4868 struct ixgbe_hw
*hw
= &adapter
->hw
;
4871 if (!(adapter
->flags
& (IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
|
4872 IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE
)))
4875 vxlanctrl
= IXGBE_READ_REG(hw
, IXGBE_VXLANCTRL
) && ~mask
;
4876 IXGBE_WRITE_REG(hw
, IXGBE_VXLANCTRL
, vxlanctrl
);
4878 if (mask
& IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK
)
4879 adapter
->vxlan_port
= 0;
4881 if (mask
& IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK
)
4882 adapter
->geneve_port
= 0;
4885 #ifdef CONFIG_IXGBE_DCB
4887 * ixgbe_configure_dcb - Configure DCB hardware
4888 * @adapter: ixgbe adapter struct
4890 * This is called by the driver on open to configure the DCB hardware.
4891 * This is also called by the gennetlink interface when reconfiguring
4894 static void ixgbe_configure_dcb(struct ixgbe_adapter
*adapter
)
4896 struct ixgbe_hw
*hw
= &adapter
->hw
;
4897 int max_frame
= adapter
->netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4899 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)) {
4900 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4901 netif_set_gso_max_size(adapter
->netdev
, 65536);
4905 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4906 netif_set_gso_max_size(adapter
->netdev
, 32768);
4909 if (adapter
->netdev
->features
& NETIF_F_FCOE_MTU
)
4910 max_frame
= max(max_frame
, IXGBE_FCOE_JUMBO_FRAME_SIZE
);
4913 /* reconfigure the hardware */
4914 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_CEE
) {
4915 ixgbe_dcb_calculate_tc_credits(hw
, &adapter
->dcb_cfg
, max_frame
,
4917 ixgbe_dcb_calculate_tc_credits(hw
, &adapter
->dcb_cfg
, max_frame
,
4919 ixgbe_dcb_hw_config(hw
, &adapter
->dcb_cfg
);
4920 } else if (adapter
->ixgbe_ieee_ets
&& adapter
->ixgbe_ieee_pfc
) {
4921 ixgbe_dcb_hw_ets(&adapter
->hw
,
4922 adapter
->ixgbe_ieee_ets
,
4924 ixgbe_dcb_hw_pfc_config(&adapter
->hw
,
4925 adapter
->ixgbe_ieee_pfc
->pfc_en
,
4926 adapter
->ixgbe_ieee_ets
->prio_tc
);
4929 /* Enable RSS Hash per TC */
4930 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
4932 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
- 1;
4939 /* write msb to all 8 TCs in one write */
4940 IXGBE_WRITE_REG(hw
, IXGBE_RQTC
, msb
* 0x11111111);
4945 /* Additional bittime to account for IXGBE framing */
4946 #define IXGBE_ETH_FRAMING 20
4949 * ixgbe_hpbthresh - calculate high water mark for flow control
4951 * @adapter: board private structure to calculate for
4952 * @pb: packet buffer to calculate
4954 static int ixgbe_hpbthresh(struct ixgbe_adapter
*adapter
, int pb
)
4956 struct ixgbe_hw
*hw
= &adapter
->hw
;
4957 struct net_device
*dev
= adapter
->netdev
;
4958 int link
, tc
, kb
, marker
;
4961 /* Calculate max LAN frame size */
4962 tc
= link
= dev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ IXGBE_ETH_FRAMING
;
4965 /* FCoE traffic class uses FCOE jumbo frames */
4966 if ((dev
->features
& NETIF_F_FCOE_MTU
) &&
4967 (tc
< IXGBE_FCOE_JUMBO_FRAME_SIZE
) &&
4968 (pb
== ixgbe_fcoe_get_tc(adapter
)))
4969 tc
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
4972 /* Calculate delay value for device */
4973 switch (hw
->mac
.type
) {
4974 case ixgbe_mac_X540
:
4975 case ixgbe_mac_X550
:
4976 case ixgbe_mac_X550EM_x
:
4977 case ixgbe_mac_x550em_a
:
4978 dv_id
= IXGBE_DV_X540(link
, tc
);
4981 dv_id
= IXGBE_DV(link
, tc
);
4985 /* Loopback switch introduces additional latency */
4986 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
4987 dv_id
+= IXGBE_B2BT(tc
);
4989 /* Delay value is calculated in bit times convert to KB */
4990 kb
= IXGBE_BT2KB(dv_id
);
4991 rx_pba
= IXGBE_READ_REG(hw
, IXGBE_RXPBSIZE(pb
)) >> 10;
4993 marker
= rx_pba
- kb
;
4995 /* It is possible that the packet buffer is not large enough
4996 * to provide required headroom. In this case throw an error
4997 * to user and a do the best we can.
5000 e_warn(drv
, "Packet Buffer(%i) can not provide enough"
5001 "headroom to support flow control."
5002 "Decrease MTU or number of traffic classes\n", pb
);
5010 * ixgbe_lpbthresh - calculate low water mark for for flow control
5012 * @adapter: board private structure to calculate for
5013 * @pb: packet buffer to calculate
5015 static int ixgbe_lpbthresh(struct ixgbe_adapter
*adapter
, int pb
)
5017 struct ixgbe_hw
*hw
= &adapter
->hw
;
5018 struct net_device
*dev
= adapter
->netdev
;
5022 /* Calculate max LAN frame size */
5023 tc
= dev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
5026 /* FCoE traffic class uses FCOE jumbo frames */
5027 if ((dev
->features
& NETIF_F_FCOE_MTU
) &&
5028 (tc
< IXGBE_FCOE_JUMBO_FRAME_SIZE
) &&
5029 (pb
== netdev_get_prio_tc_map(dev
, adapter
->fcoe
.up
)))
5030 tc
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
5033 /* Calculate delay value for device */
5034 switch (hw
->mac
.type
) {
5035 case ixgbe_mac_X540
:
5036 case ixgbe_mac_X550
:
5037 case ixgbe_mac_X550EM_x
:
5038 case ixgbe_mac_x550em_a
:
5039 dv_id
= IXGBE_LOW_DV_X540(tc
);
5042 dv_id
= IXGBE_LOW_DV(tc
);
5046 /* Delay value is calculated in bit times convert to KB */
5047 return IXGBE_BT2KB(dv_id
);
5051 * ixgbe_pbthresh_setup - calculate and setup high low water marks
5053 static void ixgbe_pbthresh_setup(struct ixgbe_adapter
*adapter
)
5055 struct ixgbe_hw
*hw
= &adapter
->hw
;
5056 int num_tc
= netdev_get_num_tc(adapter
->netdev
);
5062 for (i
= 0; i
< num_tc
; i
++) {
5063 hw
->fc
.high_water
[i
] = ixgbe_hpbthresh(adapter
, i
);
5064 hw
->fc
.low_water
[i
] = ixgbe_lpbthresh(adapter
, i
);
5066 /* Low water marks must not be larger than high water marks */
5067 if (hw
->fc
.low_water
[i
] > hw
->fc
.high_water
[i
])
5068 hw
->fc
.low_water
[i
] = 0;
5071 for (; i
< MAX_TRAFFIC_CLASS
; i
++)
5072 hw
->fc
.high_water
[i
] = 0;
5075 static void ixgbe_configure_pb(struct ixgbe_adapter
*adapter
)
5077 struct ixgbe_hw
*hw
= &adapter
->hw
;
5079 u8 tc
= netdev_get_num_tc(adapter
->netdev
);
5081 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
5082 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
5083 hdrm
= 32 << adapter
->fdir_pballoc
;
5087 hw
->mac
.ops
.set_rxpba(hw
, tc
, hdrm
, PBA_STRATEGY_EQUAL
);
5088 ixgbe_pbthresh_setup(adapter
);
5091 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter
*adapter
)
5093 struct ixgbe_hw
*hw
= &adapter
->hw
;
5094 struct hlist_node
*node2
;
5095 struct ixgbe_fdir_filter
*filter
;
5097 spin_lock(&adapter
->fdir_perfect_lock
);
5099 if (!hlist_empty(&adapter
->fdir_filter_list
))
5100 ixgbe_fdir_set_input_mask_82599(hw
, &adapter
->fdir_mask
);
5102 hlist_for_each_entry_safe(filter
, node2
,
5103 &adapter
->fdir_filter_list
, fdir_node
) {
5104 ixgbe_fdir_write_perfect_filter_82599(hw
,
5107 (filter
->action
== IXGBE_FDIR_DROP_QUEUE
) ?
5108 IXGBE_FDIR_DROP_QUEUE
:
5109 adapter
->rx_ring
[filter
->action
]->reg_idx
);
5112 spin_unlock(&adapter
->fdir_perfect_lock
);
5115 static void ixgbe_macvlan_set_rx_mode(struct net_device
*dev
, unsigned int pool
,
5116 struct ixgbe_adapter
*adapter
)
5118 struct ixgbe_hw
*hw
= &adapter
->hw
;
5121 /* No unicast promiscuous support for VMDQ devices. */
5122 vmolr
= IXGBE_READ_REG(hw
, IXGBE_VMOLR(pool
));
5123 vmolr
|= (IXGBE_VMOLR_ROMPE
| IXGBE_VMOLR_BAM
| IXGBE_VMOLR_AUPE
);
5125 /* clear the affected bit */
5126 vmolr
&= ~IXGBE_VMOLR_MPE
;
5128 if (dev
->flags
& IFF_ALLMULTI
) {
5129 vmolr
|= IXGBE_VMOLR_MPE
;
5131 vmolr
|= IXGBE_VMOLR_ROMPE
;
5132 hw
->mac
.ops
.update_mc_addr_list(hw
, dev
);
5134 ixgbe_write_uc_addr_list(adapter
->netdev
, pool
);
5135 IXGBE_WRITE_REG(hw
, IXGBE_VMOLR(pool
), vmolr
);
5138 static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter
*vadapter
)
5140 struct ixgbe_adapter
*adapter
= vadapter
->real_adapter
;
5141 int rss_i
= adapter
->num_rx_queues_per_pool
;
5142 struct ixgbe_hw
*hw
= &adapter
->hw
;
5143 u16 pool
= vadapter
->pool
;
5144 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
5145 IXGBE_PSRTYPE_UDPHDR
|
5146 IXGBE_PSRTYPE_IPV4HDR
|
5147 IXGBE_PSRTYPE_L2HDR
|
5148 IXGBE_PSRTYPE_IPV6HDR
;
5150 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
5154 psrtype
|= 2u << 29;
5156 psrtype
|= 1u << 29;
5158 IXGBE_WRITE_REG(hw
, IXGBE_PSRTYPE(VMDQ_P(pool
)), psrtype
);
5162 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
5163 * @rx_ring: ring to free buffers from
5165 static void ixgbe_clean_rx_ring(struct ixgbe_ring
*rx_ring
)
5167 u16 i
= rx_ring
->next_to_clean
;
5168 struct ixgbe_rx_buffer
*rx_buffer
= &rx_ring
->rx_buffer_info
[i
];
5170 /* Free all the Rx ring sk_buffs */
5171 while (i
!= rx_ring
->next_to_alloc
) {
5172 if (rx_buffer
->skb
) {
5173 struct sk_buff
*skb
= rx_buffer
->skb
;
5174 if (IXGBE_CB(skb
)->page_released
)
5175 dma_unmap_page_attrs(rx_ring
->dev
,
5177 ixgbe_rx_pg_size(rx_ring
),
5183 /* Invalidate cache lines that may have been written to by
5184 * device so that we avoid corrupting memory.
5186 dma_sync_single_range_for_cpu(rx_ring
->dev
,
5188 rx_buffer
->page_offset
,
5189 ixgbe_rx_bufsz(rx_ring
),
5192 /* free resources associated with mapping */
5193 dma_unmap_page_attrs(rx_ring
->dev
, rx_buffer
->dma
,
5194 ixgbe_rx_pg_size(rx_ring
),
5197 __page_frag_cache_drain(rx_buffer
->page
,
5198 rx_buffer
->pagecnt_bias
);
5202 if (i
== rx_ring
->count
) {
5204 rx_buffer
= rx_ring
->rx_buffer_info
;
5208 rx_ring
->next_to_alloc
= 0;
5209 rx_ring
->next_to_clean
= 0;
5210 rx_ring
->next_to_use
= 0;
5213 static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter
*vadapter
,
5214 struct ixgbe_ring
*rx_ring
)
5216 struct ixgbe_adapter
*adapter
= vadapter
->real_adapter
;
5217 int index
= rx_ring
->queue_index
+ vadapter
->rx_base_queue
;
5219 /* shutdown specific queue receive and wait for dma to settle */
5220 ixgbe_disable_rx_queue(adapter
, rx_ring
);
5221 usleep_range(10000, 20000);
5222 ixgbe_irq_disable_queues(adapter
, BIT_ULL(index
));
5223 ixgbe_clean_rx_ring(rx_ring
);
5224 rx_ring
->l2_accel_priv
= NULL
;
5227 static int ixgbe_fwd_ring_down(struct net_device
*vdev
,
5228 struct ixgbe_fwd_adapter
*accel
)
5230 struct ixgbe_adapter
*adapter
= accel
->real_adapter
;
5231 unsigned int rxbase
= accel
->rx_base_queue
;
5232 unsigned int txbase
= accel
->tx_base_queue
;
5235 netif_tx_stop_all_queues(vdev
);
5237 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
5238 ixgbe_disable_fwd_ring(accel
, adapter
->rx_ring
[rxbase
+ i
]);
5239 adapter
->rx_ring
[rxbase
+ i
]->netdev
= adapter
->netdev
;
5242 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
5243 adapter
->tx_ring
[txbase
+ i
]->l2_accel_priv
= NULL
;
5244 adapter
->tx_ring
[txbase
+ i
]->netdev
= adapter
->netdev
;
5251 static int ixgbe_fwd_ring_up(struct net_device
*vdev
,
5252 struct ixgbe_fwd_adapter
*accel
)
5254 struct ixgbe_adapter
*adapter
= accel
->real_adapter
;
5255 unsigned int rxbase
, txbase
, queues
;
5256 int i
, baseq
, err
= 0;
5258 if (!test_bit(accel
->pool
, &adapter
->fwd_bitmask
))
5261 baseq
= accel
->pool
* adapter
->num_rx_queues_per_pool
;
5262 netdev_dbg(vdev
, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
5263 accel
->pool
, adapter
->num_rx_pools
,
5264 baseq
, baseq
+ adapter
->num_rx_queues_per_pool
,
5265 adapter
->fwd_bitmask
);
5267 accel
->netdev
= vdev
;
5268 accel
->rx_base_queue
= rxbase
= baseq
;
5269 accel
->tx_base_queue
= txbase
= baseq
;
5271 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++)
5272 ixgbe_disable_fwd_ring(accel
, adapter
->rx_ring
[rxbase
+ i
]);
5274 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
5275 adapter
->rx_ring
[rxbase
+ i
]->netdev
= vdev
;
5276 adapter
->rx_ring
[rxbase
+ i
]->l2_accel_priv
= accel
;
5277 ixgbe_configure_rx_ring(adapter
, adapter
->rx_ring
[rxbase
+ i
]);
5280 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
5281 adapter
->tx_ring
[txbase
+ i
]->netdev
= vdev
;
5282 adapter
->tx_ring
[txbase
+ i
]->l2_accel_priv
= accel
;
5285 queues
= min_t(unsigned int,
5286 adapter
->num_rx_queues_per_pool
, vdev
->num_tx_queues
);
5287 err
= netif_set_real_num_tx_queues(vdev
, queues
);
5291 err
= netif_set_real_num_rx_queues(vdev
, queues
);
5295 if (is_valid_ether_addr(vdev
->dev_addr
))
5296 ixgbe_add_mac_filter(adapter
, vdev
->dev_addr
, accel
->pool
);
5298 ixgbe_fwd_psrtype(accel
);
5299 ixgbe_macvlan_set_rx_mode(vdev
, accel
->pool
, adapter
);
5302 ixgbe_fwd_ring_down(vdev
, accel
);
5306 static int ixgbe_upper_dev_walk(struct net_device
*upper
, void *data
)
5308 if (netif_is_macvlan(upper
)) {
5309 struct macvlan_dev
*dfwd
= netdev_priv(upper
);
5310 struct ixgbe_fwd_adapter
*vadapter
= dfwd
->fwd_priv
;
5313 ixgbe_fwd_ring_up(upper
, vadapter
);
5319 static void ixgbe_configure_dfwd(struct ixgbe_adapter
*adapter
)
5321 netdev_walk_all_upper_dev_rcu(adapter
->netdev
,
5322 ixgbe_upper_dev_walk
, NULL
);
5325 static void ixgbe_configure(struct ixgbe_adapter
*adapter
)
5327 struct ixgbe_hw
*hw
= &adapter
->hw
;
5329 ixgbe_configure_pb(adapter
);
5330 #ifdef CONFIG_IXGBE_DCB
5331 ixgbe_configure_dcb(adapter
);
5334 * We must restore virtualization before VLANs or else
5335 * the VLVF registers will not be populated
5337 ixgbe_configure_virtualization(adapter
);
5339 ixgbe_set_rx_mode(adapter
->netdev
);
5340 ixgbe_restore_vlan(adapter
);
5342 switch (hw
->mac
.type
) {
5343 case ixgbe_mac_82599EB
:
5344 case ixgbe_mac_X540
:
5345 hw
->mac
.ops
.disable_rx_buff(hw
);
5351 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
5352 ixgbe_init_fdir_signature_82599(&adapter
->hw
,
5353 adapter
->fdir_pballoc
);
5354 } else if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
) {
5355 ixgbe_init_fdir_perfect_82599(&adapter
->hw
,
5356 adapter
->fdir_pballoc
);
5357 ixgbe_fdir_filter_restore(adapter
);
5360 switch (hw
->mac
.type
) {
5361 case ixgbe_mac_82599EB
:
5362 case ixgbe_mac_X540
:
5363 hw
->mac
.ops
.enable_rx_buff(hw
);
5369 #ifdef CONFIG_IXGBE_DCA
5371 if (adapter
->flags
& IXGBE_FLAG_DCA_CAPABLE
)
5372 ixgbe_setup_dca(adapter
);
5373 #endif /* CONFIG_IXGBE_DCA */
5376 /* configure FCoE L2 filters, redirection table, and Rx control */
5377 ixgbe_configure_fcoe(adapter
);
5379 #endif /* IXGBE_FCOE */
5380 ixgbe_configure_tx(adapter
);
5381 ixgbe_configure_rx(adapter
);
5382 ixgbe_configure_dfwd(adapter
);
5386 * ixgbe_sfp_link_config - set up SFP+ link
5387 * @adapter: pointer to private adapter struct
5389 static void ixgbe_sfp_link_config(struct ixgbe_adapter
*adapter
)
5392 * We are assuming the worst case scenario here, and that
5393 * is that an SFP was inserted/removed after the reset
5394 * but before SFP detection was enabled. As such the best
5395 * solution is to just start searching as soon as we start
5397 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
5398 adapter
->flags2
|= IXGBE_FLAG2_SEARCH_FOR_SFP
;
5400 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
5401 adapter
->sfp_poll_time
= 0;
5405 * ixgbe_non_sfp_link_config - set up non-SFP+ link
5406 * @hw: pointer to private hardware struct
5408 * Returns 0 on success, negative on failure
5410 static int ixgbe_non_sfp_link_config(struct ixgbe_hw
*hw
)
5413 bool autoneg
, link_up
= false;
5414 int ret
= IXGBE_ERR_LINK_SETUP
;
5416 if (hw
->mac
.ops
.check_link
)
5417 ret
= hw
->mac
.ops
.check_link(hw
, &speed
, &link_up
, false);
5422 speed
= hw
->phy
.autoneg_advertised
;
5423 if ((!speed
) && (hw
->mac
.ops
.get_link_capabilities
))
5424 ret
= hw
->mac
.ops
.get_link_capabilities(hw
, &speed
,
5429 if (hw
->mac
.ops
.setup_link
)
5430 ret
= hw
->mac
.ops
.setup_link(hw
, speed
, link_up
);
5435 static void ixgbe_setup_gpie(struct ixgbe_adapter
*adapter
)
5437 struct ixgbe_hw
*hw
= &adapter
->hw
;
5440 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
5441 gpie
= IXGBE_GPIE_MSIX_MODE
| IXGBE_GPIE_PBA_SUPPORT
|
5443 gpie
|= IXGBE_GPIE_EIAME
;
5445 * use EIAM to auto-mask when MSI-X interrupt is asserted
5446 * this saves a register write for every interrupt
5448 switch (hw
->mac
.type
) {
5449 case ixgbe_mac_82598EB
:
5450 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
5452 case ixgbe_mac_82599EB
:
5453 case ixgbe_mac_X540
:
5454 case ixgbe_mac_X550
:
5455 case ixgbe_mac_X550EM_x
:
5456 case ixgbe_mac_x550em_a
:
5458 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
5459 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
5463 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
5464 * specifically only auto mask tx and rx interrupts */
5465 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
5468 /* XXX: to interrupt immediately for EICS writes, enable this */
5469 /* gpie |= IXGBE_GPIE_EIMEN; */
5471 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
5472 gpie
&= ~IXGBE_GPIE_VTMODE_MASK
;
5474 switch (adapter
->ring_feature
[RING_F_VMDQ
].mask
) {
5475 case IXGBE_82599_VMDQ_8Q_MASK
:
5476 gpie
|= IXGBE_GPIE_VTMODE_16
;
5478 case IXGBE_82599_VMDQ_4Q_MASK
:
5479 gpie
|= IXGBE_GPIE_VTMODE_32
;
5482 gpie
|= IXGBE_GPIE_VTMODE_64
;
5487 /* Enable Thermal over heat sensor interrupt */
5488 if (adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
) {
5489 switch (adapter
->hw
.mac
.type
) {
5490 case ixgbe_mac_82599EB
:
5491 gpie
|= IXGBE_SDP0_GPIEN_8259X
;
5498 /* Enable fan failure interrupt */
5499 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
5500 gpie
|= IXGBE_SDP1_GPIEN(hw
);
5502 switch (hw
->mac
.type
) {
5503 case ixgbe_mac_82599EB
:
5504 gpie
|= IXGBE_SDP1_GPIEN_8259X
| IXGBE_SDP2_GPIEN_8259X
;
5506 case ixgbe_mac_X550EM_x
:
5507 case ixgbe_mac_x550em_a
:
5508 gpie
|= IXGBE_SDP0_GPIEN_X540
;
5514 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
5517 static void ixgbe_up_complete(struct ixgbe_adapter
*adapter
)
5519 struct ixgbe_hw
*hw
= &adapter
->hw
;
5523 ixgbe_get_hw_control(adapter
);
5524 ixgbe_setup_gpie(adapter
);
5526 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
5527 ixgbe_configure_msix(adapter
);
5529 ixgbe_configure_msi_and_legacy(adapter
);
5531 /* enable the optics for 82599 SFP+ fiber */
5532 if (hw
->mac
.ops
.enable_tx_laser
)
5533 hw
->mac
.ops
.enable_tx_laser(hw
);
5535 if (hw
->phy
.ops
.set_phy_power
)
5536 hw
->phy
.ops
.set_phy_power(hw
, true);
5538 smp_mb__before_atomic();
5539 clear_bit(__IXGBE_DOWN
, &adapter
->state
);
5540 ixgbe_napi_enable_all(adapter
);
5542 if (ixgbe_is_sfp(hw
)) {
5543 ixgbe_sfp_link_config(adapter
);
5545 err
= ixgbe_non_sfp_link_config(hw
);
5547 e_err(probe
, "link_config FAILED %d\n", err
);
5550 /* clear any pending interrupts, may auto mask */
5551 IXGBE_READ_REG(hw
, IXGBE_EICR
);
5552 ixgbe_irq_enable(adapter
, true, true);
5555 * If this adapter has a fan, check to see if we had a failure
5556 * before we enabled the interrupt.
5558 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
5559 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
5560 if (esdp
& IXGBE_ESDP_SDP1
)
5561 e_crit(drv
, "Fan has stopped, replace the adapter\n");
5564 /* bring the link up in the watchdog, this could race with our first
5565 * link up interrupt but shouldn't be a problem */
5566 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
5567 adapter
->link_check_timeout
= jiffies
;
5568 mod_timer(&adapter
->service_timer
, jiffies
);
5570 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
5571 ctrl_ext
= IXGBE_READ_REG(hw
, IXGBE_CTRL_EXT
);
5572 ctrl_ext
|= IXGBE_CTRL_EXT_PFRSTD
;
5573 IXGBE_WRITE_REG(hw
, IXGBE_CTRL_EXT
, ctrl_ext
);
5576 void ixgbe_reinit_locked(struct ixgbe_adapter
*adapter
)
5578 WARN_ON(in_interrupt());
5579 /* put off any impending NetWatchDogTimeout */
5580 netif_trans_update(adapter
->netdev
);
5582 while (test_and_set_bit(__IXGBE_RESETTING
, &adapter
->state
))
5583 usleep_range(1000, 2000);
5584 if (adapter
->hw
.phy
.type
== ixgbe_phy_fw
)
5585 ixgbe_watchdog_link_is_down(adapter
);
5586 ixgbe_down(adapter
);
5588 * If SR-IOV enabled then wait a bit before bringing the adapter
5589 * back up to give the VFs time to respond to the reset. The
5590 * two second wait is based upon the watchdog timer cycle in
5593 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
5596 clear_bit(__IXGBE_RESETTING
, &adapter
->state
);
5599 void ixgbe_up(struct ixgbe_adapter
*adapter
)
5601 /* hardware has been reset, we need to reload some things */
5602 ixgbe_configure(adapter
);
5604 ixgbe_up_complete(adapter
);
5607 void ixgbe_reset(struct ixgbe_adapter
*adapter
)
5609 struct ixgbe_hw
*hw
= &adapter
->hw
;
5610 struct net_device
*netdev
= adapter
->netdev
;
5613 if (ixgbe_removed(hw
->hw_addr
))
5615 /* lock SFP init bit to prevent race conditions with the watchdog */
5616 while (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
5617 usleep_range(1000, 2000);
5619 /* clear all SFP and link config related flags while holding SFP_INIT */
5620 adapter
->flags2
&= ~(IXGBE_FLAG2_SEARCH_FOR_SFP
|
5621 IXGBE_FLAG2_SFP_NEEDS_RESET
);
5622 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_CONFIG
;
5624 err
= hw
->mac
.ops
.init_hw(hw
);
5627 case IXGBE_ERR_SFP_NOT_PRESENT
:
5628 case IXGBE_ERR_SFP_NOT_SUPPORTED
:
5630 case IXGBE_ERR_MASTER_REQUESTS_PENDING
:
5631 e_dev_err("master disable timed out\n");
5633 case IXGBE_ERR_EEPROM_VERSION
:
5634 /* We are running on a pre-production device, log a warning */
5635 e_dev_warn("This device is a pre-production adapter/LOM. "
5636 "Please be aware there may be issues associated with "
5637 "your hardware. If you are experiencing problems "
5638 "please contact your Intel or hardware "
5639 "representative who provided you with this "
5643 e_dev_err("Hardware Error: %d\n", err
);
5646 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
5648 /* flush entries out of MAC table */
5649 ixgbe_flush_sw_mac_table(adapter
);
5650 __dev_uc_unsync(netdev
, NULL
);
5652 /* do not flush user set addresses */
5653 ixgbe_mac_set_default_filter(adapter
);
5655 /* update SAN MAC vmdq pool selection */
5656 if (hw
->mac
.san_mac_rar_index
)
5657 hw
->mac
.ops
.set_vmdq_san_mac(hw
, VMDQ_P(0));
5659 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
5660 ixgbe_ptp_reset(adapter
);
5662 if (hw
->phy
.ops
.set_phy_power
) {
5663 if (!netif_running(adapter
->netdev
) && !adapter
->wol
)
5664 hw
->phy
.ops
.set_phy_power(hw
, false);
5666 hw
->phy
.ops
.set_phy_power(hw
, true);
5671 * ixgbe_clean_tx_ring - Free Tx Buffers
5672 * @tx_ring: ring to be cleaned
5674 static void ixgbe_clean_tx_ring(struct ixgbe_ring
*tx_ring
)
5676 u16 i
= tx_ring
->next_to_clean
;
5677 struct ixgbe_tx_buffer
*tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
5679 while (i
!= tx_ring
->next_to_use
) {
5680 union ixgbe_adv_tx_desc
*eop_desc
, *tx_desc
;
5682 /* Free all the Tx ring sk_buffs */
5683 if (ring_is_xdp(tx_ring
))
5684 page_frag_free(tx_buffer
->data
);
5686 dev_kfree_skb_any(tx_buffer
->skb
);
5688 /* unmap skb header data */
5689 dma_unmap_single(tx_ring
->dev
,
5690 dma_unmap_addr(tx_buffer
, dma
),
5691 dma_unmap_len(tx_buffer
, len
),
5694 /* check for eop_desc to determine the end of the packet */
5695 eop_desc
= tx_buffer
->next_to_watch
;
5696 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
5698 /* unmap remaining buffers */
5699 while (tx_desc
!= eop_desc
) {
5703 if (unlikely(i
== tx_ring
->count
)) {
5705 tx_buffer
= tx_ring
->tx_buffer_info
;
5706 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
5709 /* unmap any remaining paged data */
5710 if (dma_unmap_len(tx_buffer
, len
))
5711 dma_unmap_page(tx_ring
->dev
,
5712 dma_unmap_addr(tx_buffer
, dma
),
5713 dma_unmap_len(tx_buffer
, len
),
5717 /* move us one more past the eop_desc for start of next pkt */
5720 if (unlikely(i
== tx_ring
->count
)) {
5722 tx_buffer
= tx_ring
->tx_buffer_info
;
5726 /* reset BQL for queue */
5727 if (!ring_is_xdp(tx_ring
))
5728 netdev_tx_reset_queue(txring_txq(tx_ring
));
5730 /* reset next_to_use and next_to_clean */
5731 tx_ring
->next_to_use
= 0;
5732 tx_ring
->next_to_clean
= 0;
5736 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
5737 * @adapter: board private structure
5739 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter
*adapter
)
5743 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
5744 ixgbe_clean_rx_ring(adapter
->rx_ring
[i
]);
5748 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
5749 * @adapter: board private structure
5751 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter
*adapter
)
5755 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
5756 ixgbe_clean_tx_ring(adapter
->tx_ring
[i
]);
5757 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
5758 ixgbe_clean_tx_ring(adapter
->xdp_ring
[i
]);
5761 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter
*adapter
)
5763 struct hlist_node
*node2
;
5764 struct ixgbe_fdir_filter
*filter
;
5766 spin_lock(&adapter
->fdir_perfect_lock
);
5768 hlist_for_each_entry_safe(filter
, node2
,
5769 &adapter
->fdir_filter_list
, fdir_node
) {
5770 hlist_del(&filter
->fdir_node
);
5773 adapter
->fdir_filter_count
= 0;
5775 spin_unlock(&adapter
->fdir_perfect_lock
);
5778 static int ixgbe_disable_macvlan(struct net_device
*upper
, void *data
)
5780 if (netif_is_macvlan(upper
)) {
5781 struct macvlan_dev
*vlan
= netdev_priv(upper
);
5783 if (vlan
->fwd_priv
) {
5784 netif_tx_stop_all_queues(upper
);
5785 netif_carrier_off(upper
);
5786 netif_tx_disable(upper
);
5793 void ixgbe_down(struct ixgbe_adapter
*adapter
)
5795 struct net_device
*netdev
= adapter
->netdev
;
5796 struct ixgbe_hw
*hw
= &adapter
->hw
;
5799 /* signal that we are down to the interrupt handler */
5800 if (test_and_set_bit(__IXGBE_DOWN
, &adapter
->state
))
5801 return; /* do nothing if already down */
5803 /* disable receives */
5804 hw
->mac
.ops
.disable_rx(hw
);
5806 /* disable all enabled rx queues */
5807 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
5808 /* this call also flushes the previous write */
5809 ixgbe_disable_rx_queue(adapter
, adapter
->rx_ring
[i
]);
5811 usleep_range(10000, 20000);
5813 netif_tx_stop_all_queues(netdev
);
5815 /* call carrier off first to avoid false dev_watchdog timeouts */
5816 netif_carrier_off(netdev
);
5817 netif_tx_disable(netdev
);
5819 /* disable any upper devices */
5820 netdev_walk_all_upper_dev_rcu(adapter
->netdev
,
5821 ixgbe_disable_macvlan
, NULL
);
5823 ixgbe_irq_disable(adapter
);
5825 ixgbe_napi_disable_all(adapter
);
5827 clear_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
);
5828 adapter
->flags2
&= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT
;
5829 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
5831 del_timer_sync(&adapter
->service_timer
);
5833 if (adapter
->num_vfs
) {
5834 /* Clear EITR Select mapping */
5835 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, 0);
5837 /* Mark all the VFs as inactive */
5838 for (i
= 0 ; i
< adapter
->num_vfs
; i
++)
5839 adapter
->vfinfo
[i
].clear_to_send
= false;
5841 /* ping all the active vfs to let them know we are going down */
5842 ixgbe_ping_all_vfs(adapter
);
5844 /* Disable all VFTE/VFRE TX/RX */
5845 ixgbe_disable_tx_rx(adapter
);
5848 /* disable transmits in the hardware now that interrupts are off */
5849 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
5850 u8 reg_idx
= adapter
->tx_ring
[i
]->reg_idx
;
5851 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), IXGBE_TXDCTL_SWFLSH
);
5853 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++) {
5854 u8 reg_idx
= adapter
->xdp_ring
[i
]->reg_idx
;
5856 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), IXGBE_TXDCTL_SWFLSH
);
5859 /* Disable the Tx DMA engine on 82599 and later MAC */
5860 switch (hw
->mac
.type
) {
5861 case ixgbe_mac_82599EB
:
5862 case ixgbe_mac_X540
:
5863 case ixgbe_mac_X550
:
5864 case ixgbe_mac_X550EM_x
:
5865 case ixgbe_mac_x550em_a
:
5866 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
,
5867 (IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
) &
5868 ~IXGBE_DMATXCTL_TE
));
5874 if (!pci_channel_offline(adapter
->pdev
))
5875 ixgbe_reset(adapter
);
5877 /* power down the optics for 82599 SFP+ fiber */
5878 if (hw
->mac
.ops
.disable_tx_laser
)
5879 hw
->mac
.ops
.disable_tx_laser(hw
);
5881 ixgbe_clean_all_tx_rings(adapter
);
5882 ixgbe_clean_all_rx_rings(adapter
);
5886 * ixgbe_eee_capable - helper function to determine EEE support on X550
5887 * @adapter: board private structure
5889 static void ixgbe_set_eee_capable(struct ixgbe_adapter
*adapter
)
5891 struct ixgbe_hw
*hw
= &adapter
->hw
;
5893 switch (hw
->device_id
) {
5894 case IXGBE_DEV_ID_X550EM_A_1G_T
:
5895 case IXGBE_DEV_ID_X550EM_A_1G_T_L
:
5896 if (!hw
->phy
.eee_speeds_supported
)
5898 adapter
->flags2
|= IXGBE_FLAG2_EEE_CAPABLE
;
5899 if (!hw
->phy
.eee_speeds_advertised
)
5901 adapter
->flags2
|= IXGBE_FLAG2_EEE_ENABLED
;
5904 adapter
->flags2
&= ~IXGBE_FLAG2_EEE_CAPABLE
;
5905 adapter
->flags2
&= ~IXGBE_FLAG2_EEE_ENABLED
;
5911 * ixgbe_tx_timeout - Respond to a Tx Hang
5912 * @netdev: network interface device structure
5914 static void ixgbe_tx_timeout(struct net_device
*netdev
)
5916 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5918 /* Do the reset outside of interrupt context */
5919 ixgbe_tx_timeout_reset(adapter
);
5922 #ifdef CONFIG_IXGBE_DCB
5923 static void ixgbe_init_dcb(struct ixgbe_adapter
*adapter
)
5925 struct ixgbe_hw
*hw
= &adapter
->hw
;
5926 struct tc_configuration
*tc
;
5929 switch (hw
->mac
.type
) {
5930 case ixgbe_mac_82598EB
:
5931 case ixgbe_mac_82599EB
:
5932 adapter
->dcb_cfg
.num_tcs
.pg_tcs
= MAX_TRAFFIC_CLASS
;
5933 adapter
->dcb_cfg
.num_tcs
.pfc_tcs
= MAX_TRAFFIC_CLASS
;
5935 case ixgbe_mac_X540
:
5936 case ixgbe_mac_X550
:
5937 adapter
->dcb_cfg
.num_tcs
.pg_tcs
= X540_TRAFFIC_CLASS
;
5938 adapter
->dcb_cfg
.num_tcs
.pfc_tcs
= X540_TRAFFIC_CLASS
;
5940 case ixgbe_mac_X550EM_x
:
5941 case ixgbe_mac_x550em_a
:
5943 adapter
->dcb_cfg
.num_tcs
.pg_tcs
= DEF_TRAFFIC_CLASS
;
5944 adapter
->dcb_cfg
.num_tcs
.pfc_tcs
= DEF_TRAFFIC_CLASS
;
5948 /* Configure DCB traffic classes */
5949 for (j
= 0; j
< MAX_TRAFFIC_CLASS
; j
++) {
5950 tc
= &adapter
->dcb_cfg
.tc_config
[j
];
5951 tc
->path
[DCB_TX_CONFIG
].bwg_id
= 0;
5952 tc
->path
[DCB_TX_CONFIG
].bwg_percent
= 12 + (j
& 1);
5953 tc
->path
[DCB_RX_CONFIG
].bwg_id
= 0;
5954 tc
->path
[DCB_RX_CONFIG
].bwg_percent
= 12 + (j
& 1);
5955 tc
->dcb_pfc
= pfc_disabled
;
5958 /* Initialize default user to priority mapping, UPx->TC0 */
5959 tc
= &adapter
->dcb_cfg
.tc_config
[0];
5960 tc
->path
[DCB_TX_CONFIG
].up_to_tc_bitmap
= 0xFF;
5961 tc
->path
[DCB_RX_CONFIG
].up_to_tc_bitmap
= 0xFF;
5963 adapter
->dcb_cfg
.bw_percentage
[DCB_TX_CONFIG
][0] = 100;
5964 adapter
->dcb_cfg
.bw_percentage
[DCB_RX_CONFIG
][0] = 100;
5965 adapter
->dcb_cfg
.pfc_mode_enable
= false;
5966 adapter
->dcb_set_bitmap
= 0x00;
5967 if (adapter
->flags
& IXGBE_FLAG_DCB_CAPABLE
)
5968 adapter
->dcbx_cap
= DCB_CAP_DCBX_HOST
| DCB_CAP_DCBX_VER_CEE
;
5969 memcpy(&adapter
->temp_dcb_cfg
, &adapter
->dcb_cfg
,
5970 sizeof(adapter
->temp_dcb_cfg
));
5975 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
5976 * @adapter: board private structure to initialize
5978 * ixgbe_sw_init initializes the Adapter private data structure.
5979 * Fields are initialized based on PCI device information and
5980 * OS network device settings (MTU size).
5982 static int ixgbe_sw_init(struct ixgbe_adapter
*adapter
,
5983 const struct ixgbe_info
*ii
)
5985 struct ixgbe_hw
*hw
= &adapter
->hw
;
5986 struct pci_dev
*pdev
= adapter
->pdev
;
5987 unsigned int rss
, fdir
;
5991 /* PCI config space info */
5993 hw
->vendor_id
= pdev
->vendor
;
5994 hw
->device_id
= pdev
->device
;
5995 hw
->revision_id
= pdev
->revision
;
5996 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
5997 hw
->subsystem_device_id
= pdev
->subsystem_device
;
5999 /* get_invariants needs the device IDs */
6000 ii
->get_invariants(hw
);
6002 /* Set common capability flags and settings */
6003 rss
= min_t(int, ixgbe_max_rss_indices(adapter
), num_online_cpus());
6004 adapter
->ring_feature
[RING_F_RSS
].limit
= rss
;
6005 adapter
->flags2
|= IXGBE_FLAG2_RSC_CAPABLE
;
6006 adapter
->max_q_vectors
= MAX_Q_VECTORS_82599
;
6007 adapter
->atr_sample_rate
= 20;
6008 fdir
= min_t(int, IXGBE_MAX_FDIR_INDICES
, num_online_cpus());
6009 adapter
->ring_feature
[RING_F_FDIR
].limit
= fdir
;
6010 adapter
->fdir_pballoc
= IXGBE_FDIR_PBALLOC_64K
;
6011 #ifdef CONFIG_IXGBE_DCA
6012 adapter
->flags
|= IXGBE_FLAG_DCA_CAPABLE
;
6014 #ifdef CONFIG_IXGBE_DCB
6015 adapter
->flags
|= IXGBE_FLAG_DCB_CAPABLE
;
6016 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
6019 adapter
->flags
|= IXGBE_FLAG_FCOE_CAPABLE
;
6020 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
6021 #ifdef CONFIG_IXGBE_DCB
6022 /* Default traffic class to use for FCoE */
6023 adapter
->fcoe
.up
= IXGBE_FCOE_DEFTC
;
6024 #endif /* CONFIG_IXGBE_DCB */
6025 #endif /* IXGBE_FCOE */
6027 /* initialize static ixgbe jump table entries */
6028 adapter
->jump_tables
[0] = kzalloc(sizeof(*adapter
->jump_tables
[0]),
6030 if (!adapter
->jump_tables
[0])
6032 adapter
->jump_tables
[0]->mat
= ixgbe_ipv4_fields
;
6034 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++)
6035 adapter
->jump_tables
[i
] = NULL
;
6037 adapter
->mac_table
= kzalloc(sizeof(struct ixgbe_mac_addr
) *
6038 hw
->mac
.num_rar_entries
,
6040 if (!adapter
->mac_table
)
6043 if (ixgbe_init_rss_key(adapter
))
6046 /* Set MAC specific capability flags and exceptions */
6047 switch (hw
->mac
.type
) {
6048 case ixgbe_mac_82598EB
:
6049 adapter
->flags2
&= ~IXGBE_FLAG2_RSC_CAPABLE
;
6051 if (hw
->device_id
== IXGBE_DEV_ID_82598AT
)
6052 adapter
->flags
|= IXGBE_FLAG_FAN_FAIL_CAPABLE
;
6054 adapter
->max_q_vectors
= MAX_Q_VECTORS_82598
;
6055 adapter
->ring_feature
[RING_F_FDIR
].limit
= 0;
6056 adapter
->atr_sample_rate
= 0;
6057 adapter
->fdir_pballoc
= 0;
6059 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
6060 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
6061 #ifdef CONFIG_IXGBE_DCB
6062 adapter
->fcoe
.up
= 0;
6063 #endif /* IXGBE_DCB */
6064 #endif /* IXGBE_FCOE */
6066 case ixgbe_mac_82599EB
:
6067 if (hw
->device_id
== IXGBE_DEV_ID_82599_T3_LOM
)
6068 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
6070 case ixgbe_mac_X540
:
6071 fwsm
= IXGBE_READ_REG(hw
, IXGBE_FWSM(hw
));
6072 if (fwsm
& IXGBE_FWSM_TS_ENABLED
)
6073 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
6075 case ixgbe_mac_x550em_a
:
6076 adapter
->flags
|= IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE
;
6077 switch (hw
->device_id
) {
6078 case IXGBE_DEV_ID_X550EM_A_1G_T
:
6079 case IXGBE_DEV_ID_X550EM_A_1G_T_L
:
6080 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
6086 case ixgbe_mac_X550EM_x
:
6087 #ifdef CONFIG_IXGBE_DCB
6088 adapter
->flags
&= ~IXGBE_FLAG_DCB_CAPABLE
;
6091 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
6092 #ifdef CONFIG_IXGBE_DCB
6093 adapter
->fcoe
.up
= 0;
6094 #endif /* IXGBE_DCB */
6095 #endif /* IXGBE_FCOE */
6097 case ixgbe_mac_X550
:
6098 if (hw
->mac
.type
== ixgbe_mac_X550
)
6099 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
6100 #ifdef CONFIG_IXGBE_DCA
6101 adapter
->flags
&= ~IXGBE_FLAG_DCA_CAPABLE
;
6103 adapter
->flags
|= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
;
6110 /* FCoE support exists, always init the FCoE lock */
6111 spin_lock_init(&adapter
->fcoe
.lock
);
6114 /* n-tuple support exists, always init our spinlock */
6115 spin_lock_init(&adapter
->fdir_perfect_lock
);
6117 #ifdef CONFIG_IXGBE_DCB
6118 ixgbe_init_dcb(adapter
);
6121 /* default flow control settings */
6122 hw
->fc
.requested_mode
= ixgbe_fc_full
;
6123 hw
->fc
.current_mode
= ixgbe_fc_full
; /* init for ethtool output */
6124 ixgbe_pbthresh_setup(adapter
);
6125 hw
->fc
.pause_time
= IXGBE_DEFAULT_FCPAUSE
;
6126 hw
->fc
.send_xon
= true;
6127 hw
->fc
.disable_fc_autoneg
= ixgbe_device_supports_autoneg_fc(hw
);
6129 #ifdef CONFIG_PCI_IOV
6131 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
6133 /* assign number of SR-IOV VFs */
6134 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
6135 if (max_vfs
> IXGBE_MAX_VFS_DRV_LIMIT
) {
6137 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
6140 #endif /* CONFIG_PCI_IOV */
6142 /* enable itr by default in dynamic mode */
6143 adapter
->rx_itr_setting
= 1;
6144 adapter
->tx_itr_setting
= 1;
6146 /* set default ring sizes */
6147 adapter
->tx_ring_count
= IXGBE_DEFAULT_TXD
;
6148 adapter
->rx_ring_count
= IXGBE_DEFAULT_RXD
;
6150 /* set default work limits */
6151 adapter
->tx_work_limit
= IXGBE_DEFAULT_TX_WORK
;
6153 /* initialize eeprom parameters */
6154 if (ixgbe_init_eeprom_params_generic(hw
)) {
6155 e_dev_err("EEPROM initialization failed\n");
6159 /* PF holds first pool slot */
6160 set_bit(0, &adapter
->fwd_bitmask
);
6161 set_bit(__IXGBE_DOWN
, &adapter
->state
);
6167 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
6168 * @tx_ring: tx descriptor ring (for a specific queue) to setup
6170 * Return 0 on success, negative on failure
6172 int ixgbe_setup_tx_resources(struct ixgbe_ring
*tx_ring
)
6174 struct device
*dev
= tx_ring
->dev
;
6175 int orig_node
= dev_to_node(dev
);
6179 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
6181 if (tx_ring
->q_vector
)
6182 ring_node
= tx_ring
->q_vector
->numa_node
;
6184 tx_ring
->tx_buffer_info
= vmalloc_node(size
, ring_node
);
6185 if (!tx_ring
->tx_buffer_info
)
6186 tx_ring
->tx_buffer_info
= vmalloc(size
);
6187 if (!tx_ring
->tx_buffer_info
)
6190 /* round up to nearest 4K */
6191 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
6192 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
6194 set_dev_node(dev
, ring_node
);
6195 tx_ring
->desc
= dma_alloc_coherent(dev
,
6199 set_dev_node(dev
, orig_node
);
6201 tx_ring
->desc
= dma_alloc_coherent(dev
, tx_ring
->size
,
6202 &tx_ring
->dma
, GFP_KERNEL
);
6206 tx_ring
->next_to_use
= 0;
6207 tx_ring
->next_to_clean
= 0;
6211 vfree(tx_ring
->tx_buffer_info
);
6212 tx_ring
->tx_buffer_info
= NULL
;
6213 dev_err(dev
, "Unable to allocate memory for the Tx descriptor ring\n");
6218 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
6219 * @adapter: board private structure
6221 * If this function returns with an error, then it's possible one or
6222 * more of the rings is populated (while the rest are not). It is the
6223 * callers duty to clean those orphaned rings.
6225 * Return 0 on success, negative on failure
6227 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter
*adapter
)
6229 int i
, j
= 0, err
= 0;
6231 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
6232 err
= ixgbe_setup_tx_resources(adapter
->tx_ring
[i
]);
6236 e_err(probe
, "Allocation for Tx Queue %u failed\n", i
);
6239 for (j
= 0; j
< adapter
->num_xdp_queues
; j
++) {
6240 err
= ixgbe_setup_tx_resources(adapter
->xdp_ring
[j
]);
6244 e_err(probe
, "Allocation for Tx Queue %u failed\n", j
);
6250 /* rewind the index freeing the rings as we go */
6252 ixgbe_free_tx_resources(adapter
->xdp_ring
[j
]);
6254 ixgbe_free_tx_resources(adapter
->tx_ring
[i
]);
6259 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
6260 * @rx_ring: rx descriptor ring (for a specific queue) to setup
6262 * Returns 0 on success, negative on failure
6264 int ixgbe_setup_rx_resources(struct ixgbe_adapter
*adapter
,
6265 struct ixgbe_ring
*rx_ring
)
6267 struct device
*dev
= rx_ring
->dev
;
6268 int orig_node
= dev_to_node(dev
);
6272 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
6274 if (rx_ring
->q_vector
)
6275 ring_node
= rx_ring
->q_vector
->numa_node
;
6277 rx_ring
->rx_buffer_info
= vmalloc_node(size
, ring_node
);
6278 if (!rx_ring
->rx_buffer_info
)
6279 rx_ring
->rx_buffer_info
= vmalloc(size
);
6280 if (!rx_ring
->rx_buffer_info
)
6283 /* Round up to nearest 4K */
6284 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
6285 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
6287 set_dev_node(dev
, ring_node
);
6288 rx_ring
->desc
= dma_alloc_coherent(dev
,
6292 set_dev_node(dev
, orig_node
);
6294 rx_ring
->desc
= dma_alloc_coherent(dev
, rx_ring
->size
,
6295 &rx_ring
->dma
, GFP_KERNEL
);
6299 rx_ring
->next_to_clean
= 0;
6300 rx_ring
->next_to_use
= 0;
6302 rx_ring
->xdp_prog
= adapter
->xdp_prog
;
6306 vfree(rx_ring
->rx_buffer_info
);
6307 rx_ring
->rx_buffer_info
= NULL
;
6308 dev_err(dev
, "Unable to allocate memory for the Rx descriptor ring\n");
6313 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
6314 * @adapter: board private structure
6316 * If this function returns with an error, then it's possible one or
6317 * more of the rings is populated (while the rest are not). It is the
6318 * callers duty to clean those orphaned rings.
6320 * Return 0 on success, negative on failure
6322 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter
*adapter
)
6326 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
6327 err
= ixgbe_setup_rx_resources(adapter
, adapter
->rx_ring
[i
]);
6331 e_err(probe
, "Allocation for Rx Queue %u failed\n", i
);
6336 err
= ixgbe_setup_fcoe_ddp_resources(adapter
);
6341 /* rewind the index freeing the rings as we go */
6343 ixgbe_free_rx_resources(adapter
->rx_ring
[i
]);
6348 * ixgbe_free_tx_resources - Free Tx Resources per Queue
6349 * @tx_ring: Tx descriptor ring for a specific queue
6351 * Free all transmit software resources
6353 void ixgbe_free_tx_resources(struct ixgbe_ring
*tx_ring
)
6355 ixgbe_clean_tx_ring(tx_ring
);
6357 vfree(tx_ring
->tx_buffer_info
);
6358 tx_ring
->tx_buffer_info
= NULL
;
6360 /* if not set, then don't free */
6364 dma_free_coherent(tx_ring
->dev
, tx_ring
->size
,
6365 tx_ring
->desc
, tx_ring
->dma
);
6367 tx_ring
->desc
= NULL
;
6371 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
6372 * @adapter: board private structure
6374 * Free all transmit software resources
6376 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter
*adapter
)
6380 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
6381 if (adapter
->tx_ring
[i
]->desc
)
6382 ixgbe_free_tx_resources(adapter
->tx_ring
[i
]);
6383 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
6384 if (adapter
->xdp_ring
[i
]->desc
)
6385 ixgbe_free_tx_resources(adapter
->xdp_ring
[i
]);
6389 * ixgbe_free_rx_resources - Free Rx Resources
6390 * @rx_ring: ring to clean the resources from
6392 * Free all receive software resources
6394 void ixgbe_free_rx_resources(struct ixgbe_ring
*rx_ring
)
6396 ixgbe_clean_rx_ring(rx_ring
);
6398 rx_ring
->xdp_prog
= NULL
;
6399 vfree(rx_ring
->rx_buffer_info
);
6400 rx_ring
->rx_buffer_info
= NULL
;
6402 /* if not set, then don't free */
6406 dma_free_coherent(rx_ring
->dev
, rx_ring
->size
,
6407 rx_ring
->desc
, rx_ring
->dma
);
6409 rx_ring
->desc
= NULL
;
6413 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
6414 * @adapter: board private structure
6416 * Free all receive software resources
6418 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter
*adapter
)
6423 ixgbe_free_fcoe_ddp_resources(adapter
);
6426 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
6427 if (adapter
->rx_ring
[i
]->desc
)
6428 ixgbe_free_rx_resources(adapter
->rx_ring
[i
]);
6432 * ixgbe_change_mtu - Change the Maximum Transfer Unit
6433 * @netdev: network interface device structure
6434 * @new_mtu: new value for maximum frame size
6436 * Returns 0 on success, negative on failure
6438 static int ixgbe_change_mtu(struct net_device
*netdev
, int new_mtu
)
6440 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6443 * For 82599EB we cannot allow legacy VFs to enable their receive
6444 * paths when MTU greater than 1500 is configured. So display a
6445 * warning that legacy VFs will be disabled.
6447 if ((adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) &&
6448 (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) &&
6449 (new_mtu
> ETH_DATA_LEN
))
6450 e_warn(probe
, "Setting MTU > 1500 will disable legacy VFs\n");
6452 e_info(probe
, "changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
6454 /* must set new MTU before calling down or up */
6455 netdev
->mtu
= new_mtu
;
6457 if (netif_running(netdev
))
6458 ixgbe_reinit_locked(adapter
);
6464 * ixgbe_open - Called when a network interface is made active
6465 * @netdev: network interface device structure
6467 * Returns 0 on success, negative value on failure
6469 * The open entry point is called when a network interface is made
6470 * active by the system (IFF_UP). At this point all resources needed
6471 * for transmit and receive operations are allocated, the interrupt
6472 * handler is registered with the OS, the watchdog timer is started,
6473 * and the stack is notified that the interface is ready.
6475 int ixgbe_open(struct net_device
*netdev
)
6477 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6478 struct ixgbe_hw
*hw
= &adapter
->hw
;
6481 /* disallow open during test */
6482 if (test_bit(__IXGBE_TESTING
, &adapter
->state
))
6485 netif_carrier_off(netdev
);
6487 /* allocate transmit descriptors */
6488 err
= ixgbe_setup_all_tx_resources(adapter
);
6492 /* allocate receive descriptors */
6493 err
= ixgbe_setup_all_rx_resources(adapter
);
6497 ixgbe_configure(adapter
);
6499 err
= ixgbe_request_irq(adapter
);
6503 /* Notify the stack of the actual queue counts. */
6504 if (adapter
->num_rx_pools
> 1)
6505 queues
= adapter
->num_rx_queues_per_pool
;
6507 queues
= adapter
->num_tx_queues
;
6509 err
= netif_set_real_num_tx_queues(netdev
, queues
);
6511 goto err_set_queues
;
6513 if (adapter
->num_rx_pools
> 1 &&
6514 adapter
->num_rx_queues
> IXGBE_MAX_L2A_QUEUES
)
6515 queues
= IXGBE_MAX_L2A_QUEUES
;
6517 queues
= adapter
->num_rx_queues
;
6518 err
= netif_set_real_num_rx_queues(netdev
, queues
);
6520 goto err_set_queues
;
6522 ixgbe_ptp_init(adapter
);
6524 ixgbe_up_complete(adapter
);
6526 ixgbe_clear_udp_tunnel_port(adapter
, IXGBE_VXLANCTRL_ALL_UDPPORT_MASK
);
6527 udp_tunnel_get_rx_info(netdev
);
6532 ixgbe_free_irq(adapter
);
6534 ixgbe_free_all_rx_resources(adapter
);
6535 if (hw
->phy
.ops
.set_phy_power
&& !adapter
->wol
)
6536 hw
->phy
.ops
.set_phy_power(&adapter
->hw
, false);
6538 ixgbe_free_all_tx_resources(adapter
);
6540 ixgbe_reset(adapter
);
6545 static void ixgbe_close_suspend(struct ixgbe_adapter
*adapter
)
6547 ixgbe_ptp_suspend(adapter
);
6549 if (adapter
->hw
.phy
.ops
.enter_lplu
) {
6550 adapter
->hw
.phy
.reset_disable
= true;
6551 ixgbe_down(adapter
);
6552 adapter
->hw
.phy
.ops
.enter_lplu(&adapter
->hw
);
6553 adapter
->hw
.phy
.reset_disable
= false;
6555 ixgbe_down(adapter
);
6558 ixgbe_free_irq(adapter
);
6560 ixgbe_free_all_tx_resources(adapter
);
6561 ixgbe_free_all_rx_resources(adapter
);
6565 * ixgbe_close - Disables a network interface
6566 * @netdev: network interface device structure
6568 * Returns 0, this is not allowed to fail
6570 * The close entry point is called when an interface is de-activated
6571 * by the OS. The hardware is still under the drivers control, but
6572 * needs to be disabled. A global MAC reset is issued to stop the
6573 * hardware, and all transmit and receive resources are freed.
6575 int ixgbe_close(struct net_device
*netdev
)
6577 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6579 ixgbe_ptp_stop(adapter
);
6581 if (netif_device_present(netdev
))
6582 ixgbe_close_suspend(adapter
);
6584 ixgbe_fdir_filter_exit(adapter
);
6586 ixgbe_release_hw_control(adapter
);
6592 static int ixgbe_resume(struct pci_dev
*pdev
)
6594 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
6595 struct net_device
*netdev
= adapter
->netdev
;
6598 adapter
->hw
.hw_addr
= adapter
->io_addr
;
6599 pci_set_power_state(pdev
, PCI_D0
);
6600 pci_restore_state(pdev
);
6602 * pci_restore_state clears dev->state_saved so call
6603 * pci_save_state to restore it.
6605 pci_save_state(pdev
);
6607 err
= pci_enable_device_mem(pdev
);
6609 e_dev_err("Cannot enable PCI device from suspend\n");
6612 smp_mb__before_atomic();
6613 clear_bit(__IXGBE_DISABLED
, &adapter
->state
);
6614 pci_set_master(pdev
);
6616 pci_wake_from_d3(pdev
, false);
6618 ixgbe_reset(adapter
);
6620 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
6623 err
= ixgbe_init_interrupt_scheme(adapter
);
6624 if (!err
&& netif_running(netdev
))
6625 err
= ixgbe_open(netdev
);
6629 netif_device_attach(netdev
);
6634 #endif /* CONFIG_PM */
6636 static int __ixgbe_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
6638 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
6639 struct net_device
*netdev
= adapter
->netdev
;
6640 struct ixgbe_hw
*hw
= &adapter
->hw
;
6642 u32 wufc
= adapter
->wol
;
6648 netif_device_detach(netdev
);
6650 if (netif_running(netdev
))
6651 ixgbe_close_suspend(adapter
);
6653 ixgbe_clear_interrupt_scheme(adapter
);
6657 retval
= pci_save_state(pdev
);
6662 if (hw
->mac
.ops
.stop_link_on_d3
)
6663 hw
->mac
.ops
.stop_link_on_d3(hw
);
6666 ixgbe_set_rx_mode(netdev
);
6668 /* enable the optics for 82599 SFP+ fiber as we can WoL */
6669 if (hw
->mac
.ops
.enable_tx_laser
)
6670 hw
->mac
.ops
.enable_tx_laser(hw
);
6672 /* turn on all-multi mode if wake on multicast is enabled */
6673 if (wufc
& IXGBE_WUFC_MC
) {
6674 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
6675 fctrl
|= IXGBE_FCTRL_MPE
;
6676 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
6679 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
6680 ctrl
|= IXGBE_CTRL_GIO_DIS
;
6681 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, ctrl
);
6683 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, wufc
);
6685 IXGBE_WRITE_REG(hw
, IXGBE_WUC
, 0);
6686 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, 0);
6689 switch (hw
->mac
.type
) {
6690 case ixgbe_mac_82598EB
:
6691 pci_wake_from_d3(pdev
, false);
6693 case ixgbe_mac_82599EB
:
6694 case ixgbe_mac_X540
:
6695 case ixgbe_mac_X550
:
6696 case ixgbe_mac_X550EM_x
:
6697 case ixgbe_mac_x550em_a
:
6698 pci_wake_from_d3(pdev
, !!wufc
);
6704 *enable_wake
= !!wufc
;
6705 if (hw
->phy
.ops
.set_phy_power
&& !*enable_wake
)
6706 hw
->phy
.ops
.set_phy_power(hw
, false);
6708 ixgbe_release_hw_control(adapter
);
6710 if (!test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
))
6711 pci_disable_device(pdev
);
6717 static int ixgbe_suspend(struct pci_dev
*pdev
, pm_message_t state
)
6722 retval
= __ixgbe_shutdown(pdev
, &wake
);
6727 pci_prepare_to_sleep(pdev
);
6729 pci_wake_from_d3(pdev
, false);
6730 pci_set_power_state(pdev
, PCI_D3hot
);
6735 #endif /* CONFIG_PM */
6737 static void ixgbe_shutdown(struct pci_dev
*pdev
)
6741 __ixgbe_shutdown(pdev
, &wake
);
6743 if (system_state
== SYSTEM_POWER_OFF
) {
6744 pci_wake_from_d3(pdev
, wake
);
6745 pci_set_power_state(pdev
, PCI_D3hot
);
6750 * ixgbe_update_stats - Update the board statistics counters.
6751 * @adapter: board private structure
6753 void ixgbe_update_stats(struct ixgbe_adapter
*adapter
)
6755 struct net_device
*netdev
= adapter
->netdev
;
6756 struct ixgbe_hw
*hw
= &adapter
->hw
;
6757 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
6759 u32 i
, missed_rx
= 0, mpc
, bprc
, lxon
, lxoff
, xon_off_tot
;
6760 u64 non_eop_descs
= 0, restart_queue
= 0, tx_busy
= 0;
6761 u64 alloc_rx_page_failed
= 0, alloc_rx_buff_failed
= 0;
6762 u64 bytes
= 0, packets
= 0, hw_csum_rx_error
= 0;
6764 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
6765 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
6768 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
6771 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
6772 rsc_count
+= adapter
->rx_ring
[i
]->rx_stats
.rsc_count
;
6773 rsc_flush
+= adapter
->rx_ring
[i
]->rx_stats
.rsc_flush
;
6775 adapter
->rsc_total_count
= rsc_count
;
6776 adapter
->rsc_total_flush
= rsc_flush
;
6779 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
6780 struct ixgbe_ring
*rx_ring
= adapter
->rx_ring
[i
];
6781 non_eop_descs
+= rx_ring
->rx_stats
.non_eop_descs
;
6782 alloc_rx_page_failed
+= rx_ring
->rx_stats
.alloc_rx_page_failed
;
6783 alloc_rx_buff_failed
+= rx_ring
->rx_stats
.alloc_rx_buff_failed
;
6784 hw_csum_rx_error
+= rx_ring
->rx_stats
.csum_err
;
6785 bytes
+= rx_ring
->stats
.bytes
;
6786 packets
+= rx_ring
->stats
.packets
;
6788 adapter
->non_eop_descs
= non_eop_descs
;
6789 adapter
->alloc_rx_page_failed
= alloc_rx_page_failed
;
6790 adapter
->alloc_rx_buff_failed
= alloc_rx_buff_failed
;
6791 adapter
->hw_csum_rx_error
= hw_csum_rx_error
;
6792 netdev
->stats
.rx_bytes
= bytes
;
6793 netdev
->stats
.rx_packets
= packets
;
6797 /* gather some stats to the adapter struct that are per queue */
6798 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
6799 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
6800 restart_queue
+= tx_ring
->tx_stats
.restart_queue
;
6801 tx_busy
+= tx_ring
->tx_stats
.tx_busy
;
6802 bytes
+= tx_ring
->stats
.bytes
;
6803 packets
+= tx_ring
->stats
.packets
;
6805 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++) {
6806 struct ixgbe_ring
*xdp_ring
= adapter
->xdp_ring
[i
];
6808 restart_queue
+= xdp_ring
->tx_stats
.restart_queue
;
6809 tx_busy
+= xdp_ring
->tx_stats
.tx_busy
;
6810 bytes
+= xdp_ring
->stats
.bytes
;
6811 packets
+= xdp_ring
->stats
.packets
;
6813 adapter
->restart_queue
= restart_queue
;
6814 adapter
->tx_busy
= tx_busy
;
6815 netdev
->stats
.tx_bytes
= bytes
;
6816 netdev
->stats
.tx_packets
= packets
;
6818 hwstats
->crcerrs
+= IXGBE_READ_REG(hw
, IXGBE_CRCERRS
);
6820 /* 8 register reads */
6821 for (i
= 0; i
< 8; i
++) {
6822 /* for packet buffers not used, the register should read 0 */
6823 mpc
= IXGBE_READ_REG(hw
, IXGBE_MPC(i
));
6825 hwstats
->mpc
[i
] += mpc
;
6826 total_mpc
+= hwstats
->mpc
[i
];
6827 hwstats
->pxontxc
[i
] += IXGBE_READ_REG(hw
, IXGBE_PXONTXC(i
));
6828 hwstats
->pxofftxc
[i
] += IXGBE_READ_REG(hw
, IXGBE_PXOFFTXC(i
));
6829 switch (hw
->mac
.type
) {
6830 case ixgbe_mac_82598EB
:
6831 hwstats
->rnbc
[i
] += IXGBE_READ_REG(hw
, IXGBE_RNBC(i
));
6832 hwstats
->qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC(i
));
6833 hwstats
->qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC(i
));
6834 hwstats
->pxonrxc
[i
] +=
6835 IXGBE_READ_REG(hw
, IXGBE_PXONRXC(i
));
6837 case ixgbe_mac_82599EB
:
6838 case ixgbe_mac_X540
:
6839 case ixgbe_mac_X550
:
6840 case ixgbe_mac_X550EM_x
:
6841 case ixgbe_mac_x550em_a
:
6842 hwstats
->pxonrxc
[i
] +=
6843 IXGBE_READ_REG(hw
, IXGBE_PXONRXCNT(i
));
6850 /*16 register reads */
6851 for (i
= 0; i
< 16; i
++) {
6852 hwstats
->qptc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPTC(i
));
6853 hwstats
->qprc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRC(i
));
6854 if ((hw
->mac
.type
== ixgbe_mac_82599EB
) ||
6855 (hw
->mac
.type
== ixgbe_mac_X540
) ||
6856 (hw
->mac
.type
== ixgbe_mac_X550
) ||
6857 (hw
->mac
.type
== ixgbe_mac_X550EM_x
) ||
6858 (hw
->mac
.type
== ixgbe_mac_x550em_a
)) {
6859 hwstats
->qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC_L(i
));
6860 IXGBE_READ_REG(hw
, IXGBE_QBTC_H(i
)); /* to clear */
6861 hwstats
->qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC_L(i
));
6862 IXGBE_READ_REG(hw
, IXGBE_QBRC_H(i
)); /* to clear */
6866 hwstats
->gprc
+= IXGBE_READ_REG(hw
, IXGBE_GPRC
);
6867 /* work around hardware counting issue */
6868 hwstats
->gprc
-= missed_rx
;
6870 ixgbe_update_xoff_received(adapter
);
6872 /* 82598 hardware only has a 32 bit counter in the high register */
6873 switch (hw
->mac
.type
) {
6874 case ixgbe_mac_82598EB
:
6875 hwstats
->lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXC
);
6876 hwstats
->gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCH
);
6877 hwstats
->gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCH
);
6878 hwstats
->tor
+= IXGBE_READ_REG(hw
, IXGBE_TORH
);
6880 case ixgbe_mac_X540
:
6881 case ixgbe_mac_X550
:
6882 case ixgbe_mac_X550EM_x
:
6883 case ixgbe_mac_x550em_a
:
6884 /* OS2BMC stats are X540 and later */
6885 hwstats
->o2bgptc
+= IXGBE_READ_REG(hw
, IXGBE_O2BGPTC
);
6886 hwstats
->o2bspc
+= IXGBE_READ_REG(hw
, IXGBE_O2BSPC
);
6887 hwstats
->b2ospc
+= IXGBE_READ_REG(hw
, IXGBE_B2OSPC
);
6888 hwstats
->b2ogprc
+= IXGBE_READ_REG(hw
, IXGBE_B2OGPRC
);
6890 case ixgbe_mac_82599EB
:
6891 for (i
= 0; i
< 16; i
++)
6892 adapter
->hw_rx_no_dma_resources
+=
6893 IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
6894 hwstats
->gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCL
);
6895 IXGBE_READ_REG(hw
, IXGBE_GORCH
); /* to clear */
6896 hwstats
->gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCL
);
6897 IXGBE_READ_REG(hw
, IXGBE_GOTCH
); /* to clear */
6898 hwstats
->tor
+= IXGBE_READ_REG(hw
, IXGBE_TORL
);
6899 IXGBE_READ_REG(hw
, IXGBE_TORH
); /* to clear */
6900 hwstats
->lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXCNT
);
6901 hwstats
->fdirmatch
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMATCH
);
6902 hwstats
->fdirmiss
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMISS
);
6904 hwstats
->fccrc
+= IXGBE_READ_REG(hw
, IXGBE_FCCRC
);
6905 hwstats
->fcoerpdc
+= IXGBE_READ_REG(hw
, IXGBE_FCOERPDC
);
6906 hwstats
->fcoeprc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPRC
);
6907 hwstats
->fcoeptc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPTC
);
6908 hwstats
->fcoedwrc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWRC
);
6909 hwstats
->fcoedwtc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWTC
);
6910 /* Add up per cpu counters for total ddp aloc fail */
6911 if (adapter
->fcoe
.ddp_pool
) {
6912 struct ixgbe_fcoe
*fcoe
= &adapter
->fcoe
;
6913 struct ixgbe_fcoe_ddp_pool
*ddp_pool
;
6915 u64 noddp
= 0, noddp_ext_buff
= 0;
6916 for_each_possible_cpu(cpu
) {
6917 ddp_pool
= per_cpu_ptr(fcoe
->ddp_pool
, cpu
);
6918 noddp
+= ddp_pool
->noddp
;
6919 noddp_ext_buff
+= ddp_pool
->noddp_ext_buff
;
6921 hwstats
->fcoe_noddp
= noddp
;
6922 hwstats
->fcoe_noddp_ext_buff
= noddp_ext_buff
;
6924 #endif /* IXGBE_FCOE */
6929 bprc
= IXGBE_READ_REG(hw
, IXGBE_BPRC
);
6930 hwstats
->bprc
+= bprc
;
6931 hwstats
->mprc
+= IXGBE_READ_REG(hw
, IXGBE_MPRC
);
6932 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
6933 hwstats
->mprc
-= bprc
;
6934 hwstats
->roc
+= IXGBE_READ_REG(hw
, IXGBE_ROC
);
6935 hwstats
->prc64
+= IXGBE_READ_REG(hw
, IXGBE_PRC64
);
6936 hwstats
->prc127
+= IXGBE_READ_REG(hw
, IXGBE_PRC127
);
6937 hwstats
->prc255
+= IXGBE_READ_REG(hw
, IXGBE_PRC255
);
6938 hwstats
->prc511
+= IXGBE_READ_REG(hw
, IXGBE_PRC511
);
6939 hwstats
->prc1023
+= IXGBE_READ_REG(hw
, IXGBE_PRC1023
);
6940 hwstats
->prc1522
+= IXGBE_READ_REG(hw
, IXGBE_PRC1522
);
6941 hwstats
->rlec
+= IXGBE_READ_REG(hw
, IXGBE_RLEC
);
6942 lxon
= IXGBE_READ_REG(hw
, IXGBE_LXONTXC
);
6943 hwstats
->lxontxc
+= lxon
;
6944 lxoff
= IXGBE_READ_REG(hw
, IXGBE_LXOFFTXC
);
6945 hwstats
->lxofftxc
+= lxoff
;
6946 hwstats
->gptc
+= IXGBE_READ_REG(hw
, IXGBE_GPTC
);
6947 hwstats
->mptc
+= IXGBE_READ_REG(hw
, IXGBE_MPTC
);
6949 * 82598 errata - tx of flow control packets is included in tx counters
6951 xon_off_tot
= lxon
+ lxoff
;
6952 hwstats
->gptc
-= xon_off_tot
;
6953 hwstats
->mptc
-= xon_off_tot
;
6954 hwstats
->gotc
-= (xon_off_tot
* (ETH_ZLEN
+ ETH_FCS_LEN
));
6955 hwstats
->ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
6956 hwstats
->rfc
+= IXGBE_READ_REG(hw
, IXGBE_RFC
);
6957 hwstats
->rjc
+= IXGBE_READ_REG(hw
, IXGBE_RJC
);
6958 hwstats
->tpr
+= IXGBE_READ_REG(hw
, IXGBE_TPR
);
6959 hwstats
->ptc64
+= IXGBE_READ_REG(hw
, IXGBE_PTC64
);
6960 hwstats
->ptc64
-= xon_off_tot
;
6961 hwstats
->ptc127
+= IXGBE_READ_REG(hw
, IXGBE_PTC127
);
6962 hwstats
->ptc255
+= IXGBE_READ_REG(hw
, IXGBE_PTC255
);
6963 hwstats
->ptc511
+= IXGBE_READ_REG(hw
, IXGBE_PTC511
);
6964 hwstats
->ptc1023
+= IXGBE_READ_REG(hw
, IXGBE_PTC1023
);
6965 hwstats
->ptc1522
+= IXGBE_READ_REG(hw
, IXGBE_PTC1522
);
6966 hwstats
->bptc
+= IXGBE_READ_REG(hw
, IXGBE_BPTC
);
6968 /* Fill out the OS statistics structure */
6969 netdev
->stats
.multicast
= hwstats
->mprc
;
6972 netdev
->stats
.rx_errors
= hwstats
->crcerrs
+ hwstats
->rlec
;
6973 netdev
->stats
.rx_dropped
= 0;
6974 netdev
->stats
.rx_length_errors
= hwstats
->rlec
;
6975 netdev
->stats
.rx_crc_errors
= hwstats
->crcerrs
;
6976 netdev
->stats
.rx_missed_errors
= total_mpc
;
6980 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
6981 * @adapter: pointer to the device adapter structure
6983 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter
*adapter
)
6985 struct ixgbe_hw
*hw
= &adapter
->hw
;
6988 if (!(adapter
->flags2
& IXGBE_FLAG2_FDIR_REQUIRES_REINIT
))
6991 adapter
->flags2
&= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT
;
6993 /* if interface is down do nothing */
6994 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
6997 /* do nothing if we are not using signature filters */
6998 if (!(adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
))
7001 adapter
->fdir_overflow
++;
7003 if (ixgbe_reinit_fdir_tables_82599(hw
) == 0) {
7004 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
7005 set_bit(__IXGBE_TX_FDIR_INIT_DONE
,
7006 &(adapter
->tx_ring
[i
]->state
));
7007 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
7008 set_bit(__IXGBE_TX_FDIR_INIT_DONE
,
7009 &adapter
->xdp_ring
[i
]->state
);
7010 /* re-enable flow director interrupts */
7011 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMS_FLOW_DIR
);
7013 e_err(probe
, "failed to finish FDIR re-initialization, "
7014 "ignored adding FDIR ATR filters\n");
7019 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
7020 * @adapter: pointer to the device adapter structure
7022 * This function serves two purposes. First it strobes the interrupt lines
7023 * in order to make certain interrupts are occurring. Secondly it sets the
7024 * bits needed to check for TX hangs. As a result we should immediately
7025 * determine if a hang has occurred.
7027 static void ixgbe_check_hang_subtask(struct ixgbe_adapter
*adapter
)
7029 struct ixgbe_hw
*hw
= &adapter
->hw
;
7033 /* If we're down, removing or resetting, just bail */
7034 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
7035 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
7036 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
7039 /* Force detection of hung controller */
7040 if (netif_carrier_ok(adapter
->netdev
)) {
7041 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
7042 set_check_for_tx_hang(adapter
->tx_ring
[i
]);
7043 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
7044 set_check_for_tx_hang(adapter
->xdp_ring
[i
]);
7047 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
7049 * for legacy and MSI interrupts don't set any bits
7050 * that are enabled for EIAM, because this operation
7051 * would set *both* EIMS and EICS for any bit in EIAM
7053 IXGBE_WRITE_REG(hw
, IXGBE_EICS
,
7054 (IXGBE_EICS_TCP_TIMER
| IXGBE_EICS_OTHER
));
7056 /* get one bit for every active tx/rx interrupt vector */
7057 for (i
= 0; i
< adapter
->num_q_vectors
; i
++) {
7058 struct ixgbe_q_vector
*qv
= adapter
->q_vector
[i
];
7059 if (qv
->rx
.ring
|| qv
->tx
.ring
)
7064 /* Cause software interrupt to ensure rings are cleaned */
7065 ixgbe_irq_rearm_queues(adapter
, eics
);
7069 * ixgbe_watchdog_update_link - update the link status
7070 * @adapter: pointer to the device adapter structure
7071 * @link_speed: pointer to a u32 to store the link_speed
7073 static void ixgbe_watchdog_update_link(struct ixgbe_adapter
*adapter
)
7075 struct ixgbe_hw
*hw
= &adapter
->hw
;
7076 u32 link_speed
= adapter
->link_speed
;
7077 bool link_up
= adapter
->link_up
;
7078 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
7080 if (!(adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
))
7083 if (hw
->mac
.ops
.check_link
) {
7084 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
7086 /* always assume link is up, if no check link function */
7087 link_speed
= IXGBE_LINK_SPEED_10GB_FULL
;
7091 if (adapter
->ixgbe_ieee_pfc
)
7092 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
7094 if (link_up
&& !((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) && pfc_en
)) {
7095 hw
->mac
.ops
.fc_enable(hw
);
7096 ixgbe_set_rx_drop_en(adapter
);
7100 time_after(jiffies
, (adapter
->link_check_timeout
+
7101 IXGBE_TRY_LINK_TIMEOUT
))) {
7102 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
7103 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMC_LSC
);
7104 IXGBE_WRITE_FLUSH(hw
);
7107 adapter
->link_up
= link_up
;
7108 adapter
->link_speed
= link_speed
;
7111 static void ixgbe_update_default_up(struct ixgbe_adapter
*adapter
)
7113 #ifdef CONFIG_IXGBE_DCB
7114 struct net_device
*netdev
= adapter
->netdev
;
7115 struct dcb_app app
= {
7116 .selector
= IEEE_8021QAZ_APP_SEL_ETHERTYPE
,
7121 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_IEEE
)
7122 up
= dcb_ieee_getapp_mask(netdev
, &app
);
7124 adapter
->default_up
= (up
> 1) ? (ffs(up
) - 1) : 0;
7128 static int ixgbe_enable_macvlan(struct net_device
*upper
, void *data
)
7130 if (netif_is_macvlan(upper
)) {
7131 struct macvlan_dev
*vlan
= netdev_priv(upper
);
7134 netif_tx_wake_all_queues(upper
);
7141 * ixgbe_watchdog_link_is_up - update netif_carrier status and
7142 * print link up message
7143 * @adapter: pointer to the device adapter structure
7145 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter
*adapter
)
7147 struct net_device
*netdev
= adapter
->netdev
;
7148 struct ixgbe_hw
*hw
= &adapter
->hw
;
7149 u32 link_speed
= adapter
->link_speed
;
7150 const char *speed_str
;
7151 bool flow_rx
, flow_tx
;
7153 /* only continue if link was previously down */
7154 if (netif_carrier_ok(netdev
))
7157 adapter
->flags2
&= ~IXGBE_FLAG2_SEARCH_FOR_SFP
;
7159 switch (hw
->mac
.type
) {
7160 case ixgbe_mac_82598EB
: {
7161 u32 frctl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
7162 u32 rmcs
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
7163 flow_rx
= !!(frctl
& IXGBE_FCTRL_RFCE
);
7164 flow_tx
= !!(rmcs
& IXGBE_RMCS_TFCE_802_3X
);
7167 case ixgbe_mac_X540
:
7168 case ixgbe_mac_X550
:
7169 case ixgbe_mac_X550EM_x
:
7170 case ixgbe_mac_x550em_a
:
7171 case ixgbe_mac_82599EB
: {
7172 u32 mflcn
= IXGBE_READ_REG(hw
, IXGBE_MFLCN
);
7173 u32 fccfg
= IXGBE_READ_REG(hw
, IXGBE_FCCFG
);
7174 flow_rx
= !!(mflcn
& IXGBE_MFLCN_RFCE
);
7175 flow_tx
= !!(fccfg
& IXGBE_FCCFG_TFCE_802_3X
);
7184 adapter
->last_rx_ptp_check
= jiffies
;
7186 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
7187 ixgbe_ptp_start_cyclecounter(adapter
);
7189 switch (link_speed
) {
7190 case IXGBE_LINK_SPEED_10GB_FULL
:
7191 speed_str
= "10 Gbps";
7193 case IXGBE_LINK_SPEED_2_5GB_FULL
:
7194 speed_str
= "2.5 Gbps";
7196 case IXGBE_LINK_SPEED_1GB_FULL
:
7197 speed_str
= "1 Gbps";
7199 case IXGBE_LINK_SPEED_100_FULL
:
7200 speed_str
= "100 Mbps";
7202 case IXGBE_LINK_SPEED_10_FULL
:
7203 speed_str
= "10 Mbps";
7206 speed_str
= "unknown speed";
7209 e_info(drv
, "NIC Link is Up %s, Flow Control: %s\n", speed_str
,
7210 ((flow_rx
&& flow_tx
) ? "RX/TX" :
7212 (flow_tx
? "TX" : "None"))));
7214 netif_carrier_on(netdev
);
7215 ixgbe_check_vf_rate_limit(adapter
);
7217 /* enable transmits */
7218 netif_tx_wake_all_queues(adapter
->netdev
);
7220 /* enable any upper devices */
7222 netdev_walk_all_upper_dev_rcu(adapter
->netdev
,
7223 ixgbe_enable_macvlan
, NULL
);
7226 /* update the default user priority for VFs */
7227 ixgbe_update_default_up(adapter
);
7229 /* ping all the active vfs to let them know link has changed */
7230 ixgbe_ping_all_vfs(adapter
);
7234 * ixgbe_watchdog_link_is_down - update netif_carrier status and
7235 * print link down message
7236 * @adapter: pointer to the adapter structure
7238 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter
*adapter
)
7240 struct net_device
*netdev
= adapter
->netdev
;
7241 struct ixgbe_hw
*hw
= &adapter
->hw
;
7243 adapter
->link_up
= false;
7244 adapter
->link_speed
= 0;
7246 /* only continue if link was up previously */
7247 if (!netif_carrier_ok(netdev
))
7250 /* poll for SFP+ cable when link is down */
7251 if (ixgbe_is_sfp(hw
) && hw
->mac
.type
== ixgbe_mac_82598EB
)
7252 adapter
->flags2
|= IXGBE_FLAG2_SEARCH_FOR_SFP
;
7254 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
7255 ixgbe_ptp_start_cyclecounter(adapter
);
7257 e_info(drv
, "NIC Link is Down\n");
7258 netif_carrier_off(netdev
);
7260 /* ping all the active vfs to let them know link has changed */
7261 ixgbe_ping_all_vfs(adapter
);
7264 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter
*adapter
)
7268 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
7269 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
7271 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
)
7275 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++) {
7276 struct ixgbe_ring
*ring
= adapter
->xdp_ring
[i
];
7278 if (ring
->next_to_use
!= ring
->next_to_clean
)
7285 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter
*adapter
)
7287 struct ixgbe_hw
*hw
= &adapter
->hw
;
7288 struct ixgbe_ring_feature
*vmdq
= &adapter
->ring_feature
[RING_F_VMDQ
];
7289 u32 q_per_pool
= __ALIGN_MASK(1, ~vmdq
->mask
);
7293 if (!adapter
->num_vfs
)
7296 /* resetting the PF is only needed for MAC before X550 */
7297 if (hw
->mac
.type
>= ixgbe_mac_X550
)
7300 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
7301 for (j
= 0; j
< q_per_pool
; j
++) {
7304 h
= IXGBE_READ_REG(hw
, IXGBE_PVFTDHN(q_per_pool
, i
, j
));
7305 t
= IXGBE_READ_REG(hw
, IXGBE_PVFTDTN(q_per_pool
, i
, j
));
7316 * ixgbe_watchdog_flush_tx - flush queues on link down
7317 * @adapter: pointer to the device adapter structure
7319 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter
*adapter
)
7321 if (!netif_carrier_ok(adapter
->netdev
)) {
7322 if (ixgbe_ring_tx_pending(adapter
) ||
7323 ixgbe_vf_tx_pending(adapter
)) {
7324 /* We've lost link, so the controller stops DMA,
7325 * but we've got queued Tx work that's never going
7326 * to get done, so reset controller to flush Tx.
7327 * (Do the reset outside of interrupt context).
7329 e_warn(drv
, "initiating reset to clear Tx work after link loss\n");
7330 set_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
);
7335 #ifdef CONFIG_PCI_IOV
7336 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter
*adapter
)
7338 struct ixgbe_hw
*hw
= &adapter
->hw
;
7339 struct pci_dev
*pdev
= adapter
->pdev
;
7343 if (!(netif_carrier_ok(adapter
->netdev
)))
7346 gpc
= IXGBE_READ_REG(hw
, IXGBE_TXDGPC
);
7347 if (gpc
) /* If incrementing then no need for the check below */
7349 /* Check to see if a bad DMA write target from an errant or
7350 * malicious VF has caused a PCIe error. If so then we can
7351 * issue a VFLR to the offending VF(s) and then resume without
7352 * requesting a full slot reset.
7358 /* check status reg for all VFs owned by this PF */
7359 for (vf
= 0; vf
< adapter
->num_vfs
; ++vf
) {
7360 struct pci_dev
*vfdev
= adapter
->vfinfo
[vf
].vfdev
;
7365 pci_read_config_word(vfdev
, PCI_STATUS
, &status_reg
);
7366 if (status_reg
!= IXGBE_FAILED_READ_CFG_WORD
&&
7367 status_reg
& PCI_STATUS_REC_MASTER_ABORT
)
7372 static void ixgbe_spoof_check(struct ixgbe_adapter
*adapter
)
7376 /* Do not perform spoof check for 82598 or if not in IOV mode */
7377 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
||
7378 adapter
->num_vfs
== 0)
7381 ssvpc
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_SSVPC
);
7384 * ssvpc register is cleared on read, if zero then no
7385 * spoofed packets in the last interval.
7390 e_warn(drv
, "%u Spoofed packets detected\n", ssvpc
);
7393 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused
*adapter
)
7398 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused
*adapter
)
7401 #endif /* CONFIG_PCI_IOV */
7405 * ixgbe_watchdog_subtask - check and bring link up
7406 * @adapter: pointer to the device adapter structure
7408 static void ixgbe_watchdog_subtask(struct ixgbe_adapter
*adapter
)
7410 /* if interface is down, removing or resetting, do nothing */
7411 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
7412 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
7413 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
7416 ixgbe_watchdog_update_link(adapter
);
7418 if (adapter
->link_up
)
7419 ixgbe_watchdog_link_is_up(adapter
);
7421 ixgbe_watchdog_link_is_down(adapter
);
7423 ixgbe_check_for_bad_vf(adapter
);
7424 ixgbe_spoof_check(adapter
);
7425 ixgbe_update_stats(adapter
);
7427 ixgbe_watchdog_flush_tx(adapter
);
7431 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
7432 * @adapter: the ixgbe adapter structure
7434 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter
*adapter
)
7436 struct ixgbe_hw
*hw
= &adapter
->hw
;
7439 /* not searching for SFP so there is nothing to do here */
7440 if (!(adapter
->flags2
& IXGBE_FLAG2_SEARCH_FOR_SFP
) &&
7441 !(adapter
->flags2
& IXGBE_FLAG2_SFP_NEEDS_RESET
))
7444 if (adapter
->sfp_poll_time
&&
7445 time_after(adapter
->sfp_poll_time
, jiffies
))
7446 return; /* If not yet time to poll for SFP */
7448 /* someone else is in init, wait until next service event */
7449 if (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
7452 adapter
->sfp_poll_time
= jiffies
+ IXGBE_SFP_POLL_JIFFIES
- 1;
7454 err
= hw
->phy
.ops
.identify_sfp(hw
);
7455 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
7458 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
) {
7459 /* If no cable is present, then we need to reset
7460 * the next time we find a good cable. */
7461 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
7468 /* exit if reset not needed */
7469 if (!(adapter
->flags2
& IXGBE_FLAG2_SFP_NEEDS_RESET
))
7472 adapter
->flags2
&= ~IXGBE_FLAG2_SFP_NEEDS_RESET
;
7475 * A module may be identified correctly, but the EEPROM may not have
7476 * support for that module. setup_sfp() will fail in that case, so
7477 * we should not allow that module to load.
7479 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
7480 err
= hw
->phy
.ops
.reset(hw
);
7482 err
= hw
->mac
.ops
.setup_sfp(hw
);
7484 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
7487 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_CONFIG
;
7488 e_info(probe
, "detected SFP+: %d\n", hw
->phy
.sfp_type
);
7491 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
7493 if ((err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) &&
7494 (adapter
->netdev
->reg_state
== NETREG_REGISTERED
)) {
7495 e_dev_err("failed to initialize because an unsupported "
7496 "SFP+ module type was detected.\n");
7497 e_dev_err("Reload the driver after installing a "
7498 "supported module.\n");
7499 unregister_netdev(adapter
->netdev
);
7504 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
7505 * @adapter: the ixgbe adapter structure
7507 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter
*adapter
)
7509 struct ixgbe_hw
*hw
= &adapter
->hw
;
7511 bool autoneg
= false;
7513 if (!(adapter
->flags
& IXGBE_FLAG_NEED_LINK_CONFIG
))
7516 /* someone else is in init, wait until next service event */
7517 if (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
7520 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_CONFIG
;
7522 speed
= hw
->phy
.autoneg_advertised
;
7523 if ((!speed
) && (hw
->mac
.ops
.get_link_capabilities
)) {
7524 hw
->mac
.ops
.get_link_capabilities(hw
, &speed
, &autoneg
);
7526 /* setup the highest link when no autoneg */
7528 if (speed
& IXGBE_LINK_SPEED_10GB_FULL
)
7529 speed
= IXGBE_LINK_SPEED_10GB_FULL
;
7533 if (hw
->mac
.ops
.setup_link
)
7534 hw
->mac
.ops
.setup_link(hw
, speed
, true);
7536 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
7537 adapter
->link_check_timeout
= jiffies
;
7538 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
7542 * ixgbe_service_timer - Timer Call-back
7543 * @data: pointer to adapter cast into an unsigned long
7545 static void ixgbe_service_timer(unsigned long data
)
7547 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
7548 unsigned long next_event_offset
;
7550 /* poll faster when waiting for link */
7551 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
)
7552 next_event_offset
= HZ
/ 10;
7554 next_event_offset
= HZ
* 2;
7556 /* Reset the timer */
7557 mod_timer(&adapter
->service_timer
, next_event_offset
+ jiffies
);
7559 ixgbe_service_event_schedule(adapter
);
7562 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter
*adapter
)
7564 struct ixgbe_hw
*hw
= &adapter
->hw
;
7567 if (!(adapter
->flags2
& IXGBE_FLAG2_PHY_INTERRUPT
))
7570 adapter
->flags2
&= ~IXGBE_FLAG2_PHY_INTERRUPT
;
7572 if (!hw
->phy
.ops
.handle_lasi
)
7575 status
= hw
->phy
.ops
.handle_lasi(&adapter
->hw
);
7576 if (status
!= IXGBE_ERR_OVERTEMP
)
7579 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
7582 static void ixgbe_reset_subtask(struct ixgbe_adapter
*adapter
)
7584 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED
, &adapter
->state
))
7587 /* If we're already down, removing or resetting, just bail */
7588 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
7589 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
7590 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
7593 ixgbe_dump(adapter
);
7594 netdev_err(adapter
->netdev
, "Reset adapter\n");
7595 adapter
->tx_timeout_count
++;
7598 ixgbe_reinit_locked(adapter
);
7603 * ixgbe_service_task - manages and runs subtasks
7604 * @work: pointer to work_struct containing our data
7606 static void ixgbe_service_task(struct work_struct
*work
)
7608 struct ixgbe_adapter
*adapter
= container_of(work
,
7609 struct ixgbe_adapter
,
7611 if (ixgbe_removed(adapter
->hw
.hw_addr
)) {
7612 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
7614 ixgbe_down(adapter
);
7617 ixgbe_service_event_complete(adapter
);
7620 if (adapter
->flags2
& IXGBE_FLAG2_UDP_TUN_REREG_NEEDED
) {
7622 adapter
->flags2
&= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED
;
7623 udp_tunnel_get_rx_info(adapter
->netdev
);
7626 ixgbe_reset_subtask(adapter
);
7627 ixgbe_phy_interrupt_subtask(adapter
);
7628 ixgbe_sfp_detection_subtask(adapter
);
7629 ixgbe_sfp_link_config_subtask(adapter
);
7630 ixgbe_check_overtemp_subtask(adapter
);
7631 ixgbe_watchdog_subtask(adapter
);
7632 ixgbe_fdir_reinit_subtask(adapter
);
7633 ixgbe_check_hang_subtask(adapter
);
7635 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
)) {
7636 ixgbe_ptp_overflow_check(adapter
);
7637 ixgbe_ptp_rx_hang(adapter
);
7638 ixgbe_ptp_tx_hang(adapter
);
7641 ixgbe_service_event_complete(adapter
);
7644 static int ixgbe_tso(struct ixgbe_ring
*tx_ring
,
7645 struct ixgbe_tx_buffer
*first
,
7648 u32 vlan_macip_lens
, type_tucmd
, mss_l4len_idx
;
7649 struct sk_buff
*skb
= first
->skb
;
7659 u32 paylen
, l4_offset
;
7662 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
7665 if (!skb_is_gso(skb
))
7668 err
= skb_cow_head(skb
, 0);
7672 if (eth_p_mpls(first
->protocol
))
7673 ip
.hdr
= skb_inner_network_header(skb
);
7675 ip
.hdr
= skb_network_header(skb
);
7676 l4
.hdr
= skb_checksum_start(skb
);
7678 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
7679 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
7681 /* initialize outer IP header fields */
7682 if (ip
.v4
->version
== 4) {
7683 unsigned char *csum_start
= skb_checksum_start(skb
);
7684 unsigned char *trans_start
= ip
.hdr
+ (ip
.v4
->ihl
* 4);
7686 /* IP header will have to cancel out any data that
7687 * is not a part of the outer IP header
7689 ip
.v4
->check
= csum_fold(csum_partial(trans_start
,
7690 csum_start
- trans_start
,
7692 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
7695 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
7696 IXGBE_TX_FLAGS_CSUM
|
7697 IXGBE_TX_FLAGS_IPV4
;
7699 ip
.v6
->payload_len
= 0;
7700 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
7701 IXGBE_TX_FLAGS_CSUM
;
7704 /* determine offset of inner transport header */
7705 l4_offset
= l4
.hdr
- skb
->data
;
7707 /* compute length of segmentation header */
7708 *hdr_len
= (l4
.tcp
->doff
* 4) + l4_offset
;
7710 /* remove payload length from inner checksum */
7711 paylen
= skb
->len
- l4_offset
;
7712 csum_replace_by_diff(&l4
.tcp
->check
, htonl(paylen
));
7714 /* update gso size and bytecount with header size */
7715 first
->gso_segs
= skb_shinfo(skb
)->gso_segs
;
7716 first
->bytecount
+= (first
->gso_segs
- 1) * *hdr_len
;
7718 /* mss_l4len_id: use 0 as index for TSO */
7719 mss_l4len_idx
= (*hdr_len
- l4_offset
) << IXGBE_ADVTXD_L4LEN_SHIFT
;
7720 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
7722 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
7723 vlan_macip_lens
= l4
.hdr
- ip
.hdr
;
7724 vlan_macip_lens
|= (ip
.hdr
- skb
->data
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
7725 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
7727 ixgbe_tx_ctxtdesc(tx_ring
, vlan_macip_lens
, 0, type_tucmd
,
7733 static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff
*skb
)
7735 unsigned int offset
= 0;
7737 ipv6_find_hdr(skb
, &offset
, IPPROTO_SCTP
, NULL
, NULL
);
7739 return offset
== skb_checksum_start_offset(skb
);
7742 static void ixgbe_tx_csum(struct ixgbe_ring
*tx_ring
,
7743 struct ixgbe_tx_buffer
*first
)
7745 struct sk_buff
*skb
= first
->skb
;
7746 u32 vlan_macip_lens
= 0;
7749 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
) {
7751 if (!(first
->tx_flags
& (IXGBE_TX_FLAGS_HW_VLAN
|
7752 IXGBE_TX_FLAGS_CC
)))
7757 switch (skb
->csum_offset
) {
7758 case offsetof(struct tcphdr
, check
):
7759 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
7761 case offsetof(struct udphdr
, check
):
7763 case offsetof(struct sctphdr
, checksum
):
7764 /* validate that this is actually an SCTP request */
7765 if (((first
->protocol
== htons(ETH_P_IP
)) &&
7766 (ip_hdr(skb
)->protocol
== IPPROTO_SCTP
)) ||
7767 ((first
->protocol
== htons(ETH_P_IPV6
)) &&
7768 ixgbe_ipv6_csum_is_sctp(skb
))) {
7769 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
7774 skb_checksum_help(skb
);
7778 /* update TX checksum flag */
7779 first
->tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
7780 vlan_macip_lens
= skb_checksum_start_offset(skb
) -
7781 skb_network_offset(skb
);
7783 /* vlan_macip_lens: MACLEN, VLAN tag */
7784 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
7785 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
7787 ixgbe_tx_ctxtdesc(tx_ring
, vlan_macip_lens
, 0, type_tucmd
, 0);
7790 #define IXGBE_SET_FLAG(_input, _flag, _result) \
7791 ((_flag <= _result) ? \
7792 ((u32)(_input & _flag) * (_result / _flag)) : \
7793 ((u32)(_input & _flag) / (_flag / _result)))
7795 static u32
ixgbe_tx_cmd_type(struct sk_buff
*skb
, u32 tx_flags
)
7797 /* set type for advanced descriptor with frame checksum insertion */
7798 u32 cmd_type
= IXGBE_ADVTXD_DTYP_DATA
|
7799 IXGBE_ADVTXD_DCMD_DEXT
|
7800 IXGBE_ADVTXD_DCMD_IFCS
;
7802 /* set HW vlan bit if vlan is present */
7803 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_HW_VLAN
,
7804 IXGBE_ADVTXD_DCMD_VLE
);
7806 /* set segmentation enable bits for TSO/FSO */
7807 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_TSO
,
7808 IXGBE_ADVTXD_DCMD_TSE
);
7810 /* set timestamp bit if present */
7811 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_TSTAMP
,
7812 IXGBE_ADVTXD_MAC_TSTAMP
);
7814 /* insert frame checksum */
7815 cmd_type
^= IXGBE_SET_FLAG(skb
->no_fcs
, 1, IXGBE_ADVTXD_DCMD_IFCS
);
7820 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc
*tx_desc
,
7821 u32 tx_flags
, unsigned int paylen
)
7823 u32 olinfo_status
= paylen
<< IXGBE_ADVTXD_PAYLEN_SHIFT
;
7825 /* enable L4 checksum for TSO and TX checksum offload */
7826 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7827 IXGBE_TX_FLAGS_CSUM
,
7828 IXGBE_ADVTXD_POPTS_TXSM
);
7830 /* enble IPv4 checksum for TSO */
7831 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7832 IXGBE_TX_FLAGS_IPV4
,
7833 IXGBE_ADVTXD_POPTS_IXSM
);
7836 * Check Context must be set if Tx switch is enabled, which it
7837 * always is for case where virtual functions are running
7839 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7843 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
7846 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring
*tx_ring
, u16 size
)
7848 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
7850 /* Herbert's original patch had:
7851 * smp_mb__after_netif_stop_queue();
7852 * but since that doesn't exist yet, just open code it.
7856 /* We need to check again in a case another CPU has just
7857 * made room available.
7859 if (likely(ixgbe_desc_unused(tx_ring
) < size
))
7862 /* A reprieve! - use start_queue because it doesn't call schedule */
7863 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
7864 ++tx_ring
->tx_stats
.restart_queue
;
7868 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring
*tx_ring
, u16 size
)
7870 if (likely(ixgbe_desc_unused(tx_ring
) >= size
))
7873 return __ixgbe_maybe_stop_tx(tx_ring
, size
);
7876 #define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
7879 static int ixgbe_tx_map(struct ixgbe_ring
*tx_ring
,
7880 struct ixgbe_tx_buffer
*first
,
7883 struct sk_buff
*skb
= first
->skb
;
7884 struct ixgbe_tx_buffer
*tx_buffer
;
7885 union ixgbe_adv_tx_desc
*tx_desc
;
7886 struct skb_frag_struct
*frag
;
7888 unsigned int data_len
, size
;
7889 u32 tx_flags
= first
->tx_flags
;
7890 u32 cmd_type
= ixgbe_tx_cmd_type(skb
, tx_flags
);
7891 u16 i
= tx_ring
->next_to_use
;
7893 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
7895 ixgbe_tx_olinfo_status(tx_desc
, tx_flags
, skb
->len
- hdr_len
);
7897 size
= skb_headlen(skb
);
7898 data_len
= skb
->data_len
;
7901 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
7902 if (data_len
< sizeof(struct fcoe_crc_eof
)) {
7903 size
-= sizeof(struct fcoe_crc_eof
) - data_len
;
7906 data_len
-= sizeof(struct fcoe_crc_eof
);
7911 dma
= dma_map_single(tx_ring
->dev
, skb
->data
, size
, DMA_TO_DEVICE
);
7915 for (frag
= &skb_shinfo(skb
)->frags
[0];; frag
++) {
7916 if (dma_mapping_error(tx_ring
->dev
, dma
))
7919 /* record length, and DMA address */
7920 dma_unmap_len_set(tx_buffer
, len
, size
);
7921 dma_unmap_addr_set(tx_buffer
, dma
, dma
);
7923 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
7925 while (unlikely(size
> IXGBE_MAX_DATA_PER_TXD
)) {
7926 tx_desc
->read
.cmd_type_len
=
7927 cpu_to_le32(cmd_type
^ IXGBE_MAX_DATA_PER_TXD
);
7931 if (i
== tx_ring
->count
) {
7932 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
7935 tx_desc
->read
.olinfo_status
= 0;
7937 dma
+= IXGBE_MAX_DATA_PER_TXD
;
7938 size
-= IXGBE_MAX_DATA_PER_TXD
;
7940 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
7943 if (likely(!data_len
))
7946 tx_desc
->read
.cmd_type_len
= cpu_to_le32(cmd_type
^ size
);
7950 if (i
== tx_ring
->count
) {
7951 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
7954 tx_desc
->read
.olinfo_status
= 0;
7957 size
= min_t(unsigned int, data_len
, skb_frag_size(frag
));
7959 size
= skb_frag_size(frag
);
7963 dma
= skb_frag_dma_map(tx_ring
->dev
, frag
, 0, size
,
7966 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
7969 /* write last descriptor with RS and EOP bits */
7970 cmd_type
|= size
| IXGBE_TXD_CMD
;
7971 tx_desc
->read
.cmd_type_len
= cpu_to_le32(cmd_type
);
7973 netdev_tx_sent_queue(txring_txq(tx_ring
), first
->bytecount
);
7975 /* set the timestamp */
7976 first
->time_stamp
= jiffies
;
7979 * Force memory writes to complete before letting h/w know there
7980 * are new descriptors to fetch. (Only applicable for weak-ordered
7981 * memory model archs, such as IA-64).
7983 * We also need this memory barrier to make certain all of the
7984 * status bits have been updated before next_to_watch is written.
7988 /* set next_to_watch value indicating a packet is present */
7989 first
->next_to_watch
= tx_desc
;
7992 if (i
== tx_ring
->count
)
7995 tx_ring
->next_to_use
= i
;
7997 ixgbe_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
7999 if (netif_xmit_stopped(txring_txq(tx_ring
)) || !skb
->xmit_more
) {
8000 writel(i
, tx_ring
->tail
);
8002 /* we need this if more than one processor can write to our tail
8003 * at a time, it synchronizes IO on IA64/Altix systems
8010 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
8011 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
8013 /* clear dma mappings for failed tx_buffer_info map */
8014 while (tx_buffer
!= first
) {
8015 if (dma_unmap_len(tx_buffer
, len
))
8016 dma_unmap_page(tx_ring
->dev
,
8017 dma_unmap_addr(tx_buffer
, dma
),
8018 dma_unmap_len(tx_buffer
, len
),
8020 dma_unmap_len_set(tx_buffer
, len
, 0);
8023 i
+= tx_ring
->count
;
8024 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
8027 if (dma_unmap_len(tx_buffer
, len
))
8028 dma_unmap_single(tx_ring
->dev
,
8029 dma_unmap_addr(tx_buffer
, dma
),
8030 dma_unmap_len(tx_buffer
, len
),
8032 dma_unmap_len_set(tx_buffer
, len
, 0);
8034 dev_kfree_skb_any(first
->skb
);
8037 tx_ring
->next_to_use
= i
;
8042 static void ixgbe_atr(struct ixgbe_ring
*ring
,
8043 struct ixgbe_tx_buffer
*first
)
8045 struct ixgbe_q_vector
*q_vector
= ring
->q_vector
;
8046 union ixgbe_atr_hash_dword input
= { .dword
= 0 };
8047 union ixgbe_atr_hash_dword common
= { .dword
= 0 };
8049 unsigned char *network
;
8051 struct ipv6hdr
*ipv6
;
8055 struct sk_buff
*skb
;
8059 /* if ring doesn't have a interrupt vector, cannot perform ATR */
8063 /* do nothing if sampling is disabled */
8064 if (!ring
->atr_sample_rate
)
8069 /* currently only IPv4/IPv6 with TCP is supported */
8070 if ((first
->protocol
!= htons(ETH_P_IP
)) &&
8071 (first
->protocol
!= htons(ETH_P_IPV6
)))
8074 /* snag network header to get L4 type and address */
8076 hdr
.network
= skb_network_header(skb
);
8077 if (unlikely(hdr
.network
<= skb
->data
))
8079 if (skb
->encapsulation
&&
8080 first
->protocol
== htons(ETH_P_IP
) &&
8081 hdr
.ipv4
->protocol
== IPPROTO_UDP
) {
8082 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
8084 if (unlikely(skb_tail_pointer(skb
) < hdr
.network
+
8088 /* verify the port is recognized as VXLAN */
8089 if (adapter
->vxlan_port
&&
8090 udp_hdr(skb
)->dest
== adapter
->vxlan_port
)
8091 hdr
.network
= skb_inner_network_header(skb
);
8093 if (adapter
->geneve_port
&&
8094 udp_hdr(skb
)->dest
== adapter
->geneve_port
)
8095 hdr
.network
= skb_inner_network_header(skb
);
8098 /* Make sure we have at least [minimum IPv4 header + TCP]
8099 * or [IPv6 header] bytes
8101 if (unlikely(skb_tail_pointer(skb
) < hdr
.network
+ 40))
8104 /* Currently only IPv4/IPv6 with TCP is supported */
8105 switch (hdr
.ipv4
->version
) {
8107 /* access ihl as u8 to avoid unaligned access on ia64 */
8108 hlen
= (hdr
.network
[0] & 0x0F) << 2;
8109 l4_proto
= hdr
.ipv4
->protocol
;
8112 hlen
= hdr
.network
- skb
->data
;
8113 l4_proto
= ipv6_find_hdr(skb
, &hlen
, IPPROTO_TCP
, NULL
, NULL
);
8114 hlen
-= hdr
.network
- skb
->data
;
8120 if (l4_proto
!= IPPROTO_TCP
)
8123 if (unlikely(skb_tail_pointer(skb
) < hdr
.network
+
8124 hlen
+ sizeof(struct tcphdr
)))
8127 th
= (struct tcphdr
*)(hdr
.network
+ hlen
);
8129 /* skip this packet since the socket is closing */
8133 /* sample on all syn packets or once every atr sample count */
8134 if (!th
->syn
&& (ring
->atr_count
< ring
->atr_sample_rate
))
8137 /* reset sample count */
8138 ring
->atr_count
= 0;
8140 vlan_id
= htons(first
->tx_flags
>> IXGBE_TX_FLAGS_VLAN_SHIFT
);
8143 * src and dst are inverted, think how the receiver sees them
8145 * The input is broken into two sections, a non-compressed section
8146 * containing vm_pool, vlan_id, and flow_type. The rest of the data
8147 * is XORed together and stored in the compressed dword.
8149 input
.formatted
.vlan_id
= vlan_id
;
8152 * since src port and flex bytes occupy the same word XOR them together
8153 * and write the value to source port portion of compressed dword
8155 if (first
->tx_flags
& (IXGBE_TX_FLAGS_SW_VLAN
| IXGBE_TX_FLAGS_HW_VLAN
))
8156 common
.port
.src
^= th
->dest
^ htons(ETH_P_8021Q
);
8158 common
.port
.src
^= th
->dest
^ first
->protocol
;
8159 common
.port
.dst
^= th
->source
;
8161 switch (hdr
.ipv4
->version
) {
8163 input
.formatted
.flow_type
= IXGBE_ATR_FLOW_TYPE_TCPV4
;
8164 common
.ip
^= hdr
.ipv4
->saddr
^ hdr
.ipv4
->daddr
;
8167 input
.formatted
.flow_type
= IXGBE_ATR_FLOW_TYPE_TCPV6
;
8168 common
.ip
^= hdr
.ipv6
->saddr
.s6_addr32
[0] ^
8169 hdr
.ipv6
->saddr
.s6_addr32
[1] ^
8170 hdr
.ipv6
->saddr
.s6_addr32
[2] ^
8171 hdr
.ipv6
->saddr
.s6_addr32
[3] ^
8172 hdr
.ipv6
->daddr
.s6_addr32
[0] ^
8173 hdr
.ipv6
->daddr
.s6_addr32
[1] ^
8174 hdr
.ipv6
->daddr
.s6_addr32
[2] ^
8175 hdr
.ipv6
->daddr
.s6_addr32
[3];
8181 if (hdr
.network
!= skb_network_header(skb
))
8182 input
.formatted
.flow_type
|= IXGBE_ATR_L4TYPE_TUNNEL_MASK
;
8184 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
8185 ixgbe_fdir_add_signature_filter_82599(&q_vector
->adapter
->hw
,
8186 input
, common
, ring
->queue_index
);
8189 static u16
ixgbe_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
8190 void *accel_priv
, select_queue_fallback_t fallback
)
8192 struct ixgbe_fwd_adapter
*fwd_adapter
= accel_priv
;
8194 struct ixgbe_adapter
*adapter
;
8195 struct ixgbe_ring_feature
*f
;
8200 return skb
->queue_mapping
+ fwd_adapter
->tx_base_queue
;
8205 * only execute the code below if protocol is FCoE
8206 * or FIP and we have FCoE enabled on the adapter
8208 switch (vlan_get_protocol(skb
)) {
8209 case htons(ETH_P_FCOE
):
8210 case htons(ETH_P_FIP
):
8211 adapter
= netdev_priv(dev
);
8213 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
8217 return fallback(dev
, skb
);
8220 f
= &adapter
->ring_feature
[RING_F_FCOE
];
8222 txq
= skb_rx_queue_recorded(skb
) ? skb_get_rx_queue(skb
) :
8225 while (txq
>= f
->indices
)
8228 return txq
+ f
->offset
;
8230 return fallback(dev
, skb
);
8234 static int ixgbe_xmit_xdp_ring(struct ixgbe_adapter
*adapter
,
8235 struct xdp_buff
*xdp
)
8237 struct ixgbe_ring
*ring
= adapter
->xdp_ring
[smp_processor_id()];
8238 struct ixgbe_tx_buffer
*tx_buffer
;
8239 union ixgbe_adv_tx_desc
*tx_desc
;
8244 len
= xdp
->data_end
- xdp
->data
;
8246 if (unlikely(!ixgbe_desc_unused(ring
)))
8247 return IXGBE_XDP_CONSUMED
;
8249 dma
= dma_map_single(ring
->dev
, xdp
->data
, len
, DMA_TO_DEVICE
);
8250 if (dma_mapping_error(ring
->dev
, dma
))
8251 return IXGBE_XDP_CONSUMED
;
8253 /* record the location of the first descriptor for this packet */
8254 tx_buffer
= &ring
->tx_buffer_info
[ring
->next_to_use
];
8255 tx_buffer
->bytecount
= len
;
8256 tx_buffer
->gso_segs
= 1;
8257 tx_buffer
->protocol
= 0;
8259 i
= ring
->next_to_use
;
8260 tx_desc
= IXGBE_TX_DESC(ring
, i
);
8262 dma_unmap_len_set(tx_buffer
, len
, len
);
8263 dma_unmap_addr_set(tx_buffer
, dma
, dma
);
8264 tx_buffer
->data
= xdp
->data
;
8265 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
8267 /* put descriptor type bits */
8268 cmd_type
= IXGBE_ADVTXD_DTYP_DATA
|
8269 IXGBE_ADVTXD_DCMD_DEXT
|
8270 IXGBE_ADVTXD_DCMD_IFCS
;
8271 cmd_type
|= len
| IXGBE_TXD_CMD
;
8272 tx_desc
->read
.cmd_type_len
= cpu_to_le32(cmd_type
);
8273 tx_desc
->read
.olinfo_status
=
8274 cpu_to_le32(len
<< IXGBE_ADVTXD_PAYLEN_SHIFT
);
8276 /* Avoid any potential race with xdp_xmit and cleanup */
8279 /* set next_to_watch value indicating a packet is present */
8281 if (i
== ring
->count
)
8284 tx_buffer
->next_to_watch
= tx_desc
;
8285 ring
->next_to_use
= i
;
8287 return IXGBE_XDP_TX
;
8290 netdev_tx_t
ixgbe_xmit_frame_ring(struct sk_buff
*skb
,
8291 struct ixgbe_adapter
*adapter
,
8292 struct ixgbe_ring
*tx_ring
)
8294 struct ixgbe_tx_buffer
*first
;
8298 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
8299 __be16 protocol
= skb
->protocol
;
8303 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
8304 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
8305 * + 2 desc gap to keep tail from touching head,
8306 * + 1 desc for context descriptor,
8307 * otherwise try next time
8309 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
8310 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
8312 if (ixgbe_maybe_stop_tx(tx_ring
, count
+ 3)) {
8313 tx_ring
->tx_stats
.tx_busy
++;
8314 return NETDEV_TX_BUSY
;
8317 /* record the location of the first descriptor for this packet */
8318 first
= &tx_ring
->tx_buffer_info
[tx_ring
->next_to_use
];
8320 first
->bytecount
= skb
->len
;
8321 first
->gso_segs
= 1;
8323 /* if we have a HW VLAN tag being added default to the HW one */
8324 if (skb_vlan_tag_present(skb
)) {
8325 tx_flags
|= skb_vlan_tag_get(skb
) << IXGBE_TX_FLAGS_VLAN_SHIFT
;
8326 tx_flags
|= IXGBE_TX_FLAGS_HW_VLAN
;
8327 /* else if it is a SW VLAN check the next protocol and store the tag */
8328 } else if (protocol
== htons(ETH_P_8021Q
)) {
8329 struct vlan_hdr
*vhdr
, _vhdr
;
8330 vhdr
= skb_header_pointer(skb
, ETH_HLEN
, sizeof(_vhdr
), &_vhdr
);
8334 tx_flags
|= ntohs(vhdr
->h_vlan_TCI
) <<
8335 IXGBE_TX_FLAGS_VLAN_SHIFT
;
8336 tx_flags
|= IXGBE_TX_FLAGS_SW_VLAN
;
8338 protocol
= vlan_get_protocol(skb
);
8340 if (unlikely(skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
8341 adapter
->ptp_clock
) {
8342 if (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS
,
8344 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
8345 tx_flags
|= IXGBE_TX_FLAGS_TSTAMP
;
8347 /* schedule check for Tx timestamp */
8348 adapter
->ptp_tx_skb
= skb_get(skb
);
8349 adapter
->ptp_tx_start
= jiffies
;
8350 schedule_work(&adapter
->ptp_tx_work
);
8352 adapter
->tx_hwtstamp_skipped
++;
8356 skb_tx_timestamp(skb
);
8358 #ifdef CONFIG_PCI_IOV
8360 * Use the l2switch_enable flag - would be false if the DMA
8361 * Tx switch had been disabled.
8363 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
8364 tx_flags
|= IXGBE_TX_FLAGS_CC
;
8367 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
8368 if ((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) &&
8369 ((tx_flags
& (IXGBE_TX_FLAGS_HW_VLAN
| IXGBE_TX_FLAGS_SW_VLAN
)) ||
8370 (skb
->priority
!= TC_PRIO_CONTROL
))) {
8371 tx_flags
&= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK
;
8372 tx_flags
|= (skb
->priority
& 0x7) <<
8373 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT
;
8374 if (tx_flags
& IXGBE_TX_FLAGS_SW_VLAN
) {
8375 struct vlan_ethhdr
*vhdr
;
8377 if (skb_cow_head(skb
, 0))
8379 vhdr
= (struct vlan_ethhdr
*)skb
->data
;
8380 vhdr
->h_vlan_TCI
= htons(tx_flags
>>
8381 IXGBE_TX_FLAGS_VLAN_SHIFT
);
8383 tx_flags
|= IXGBE_TX_FLAGS_HW_VLAN
;
8387 /* record initial flags and protocol */
8388 first
->tx_flags
= tx_flags
;
8389 first
->protocol
= protocol
;
8392 /* setup tx offload for FCoE */
8393 if ((protocol
== htons(ETH_P_FCOE
)) &&
8394 (tx_ring
->netdev
->features
& (NETIF_F_FSO
| NETIF_F_FCOE_CRC
))) {
8395 tso
= ixgbe_fso(tx_ring
, first
, &hdr_len
);
8402 #endif /* IXGBE_FCOE */
8403 tso
= ixgbe_tso(tx_ring
, first
, &hdr_len
);
8407 ixgbe_tx_csum(tx_ring
, first
);
8409 /* add the ATR filter if ATR is on */
8410 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE
, &tx_ring
->state
))
8411 ixgbe_atr(tx_ring
, first
);
8415 #endif /* IXGBE_FCOE */
8416 if (ixgbe_tx_map(tx_ring
, first
, hdr_len
))
8417 goto cleanup_tx_timestamp
;
8419 return NETDEV_TX_OK
;
8422 dev_kfree_skb_any(first
->skb
);
8424 cleanup_tx_timestamp
:
8425 if (unlikely(tx_flags
& IXGBE_TX_FLAGS_TSTAMP
)) {
8426 dev_kfree_skb_any(adapter
->ptp_tx_skb
);
8427 adapter
->ptp_tx_skb
= NULL
;
8428 cancel_work_sync(&adapter
->ptp_tx_work
);
8429 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS
, &adapter
->state
);
8432 return NETDEV_TX_OK
;
8435 static netdev_tx_t
__ixgbe_xmit_frame(struct sk_buff
*skb
,
8436 struct net_device
*netdev
,
8437 struct ixgbe_ring
*ring
)
8439 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8440 struct ixgbe_ring
*tx_ring
;
8443 * The minimum packet size for olinfo paylen is 17 so pad the skb
8444 * in order to meet this minimum size requirement.
8446 if (skb_put_padto(skb
, 17))
8447 return NETDEV_TX_OK
;
8449 tx_ring
= ring
? ring
: adapter
->tx_ring
[skb
->queue_mapping
];
8451 return ixgbe_xmit_frame_ring(skb
, adapter
, tx_ring
);
8454 static netdev_tx_t
ixgbe_xmit_frame(struct sk_buff
*skb
,
8455 struct net_device
*netdev
)
8457 return __ixgbe_xmit_frame(skb
, netdev
, NULL
);
8461 * ixgbe_set_mac - Change the Ethernet Address of the NIC
8462 * @netdev: network interface device structure
8463 * @p: pointer to an address structure
8465 * Returns 0 on success, negative on failure
8467 static int ixgbe_set_mac(struct net_device
*netdev
, void *p
)
8469 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8470 struct ixgbe_hw
*hw
= &adapter
->hw
;
8471 struct sockaddr
*addr
= p
;
8473 if (!is_valid_ether_addr(addr
->sa_data
))
8474 return -EADDRNOTAVAIL
;
8476 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
8477 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
8479 ixgbe_mac_set_default_filter(adapter
);
8485 ixgbe_mdio_read(struct net_device
*netdev
, int prtad
, int devad
, u16 addr
)
8487 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8488 struct ixgbe_hw
*hw
= &adapter
->hw
;
8492 if (prtad
!= hw
->phy
.mdio
.prtad
)
8494 rc
= hw
->phy
.ops
.read_reg(hw
, addr
, devad
, &value
);
8500 static int ixgbe_mdio_write(struct net_device
*netdev
, int prtad
, int devad
,
8501 u16 addr
, u16 value
)
8503 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8504 struct ixgbe_hw
*hw
= &adapter
->hw
;
8506 if (prtad
!= hw
->phy
.mdio
.prtad
)
8508 return hw
->phy
.ops
.write_reg(hw
, addr
, devad
, value
);
8511 static int ixgbe_ioctl(struct net_device
*netdev
, struct ifreq
*req
, int cmd
)
8513 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8517 return ixgbe_ptp_set_ts_config(adapter
, req
);
8519 return ixgbe_ptp_get_ts_config(adapter
, req
);
8521 return mdio_mii_ioctl(&adapter
->hw
.phy
.mdio
, if_mii(req
), cmd
);
8526 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
8528 * @netdev: network interface device structure
8530 * Returns non-zero on failure
8532 static int ixgbe_add_sanmac_netdev(struct net_device
*dev
)
8535 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8536 struct ixgbe_hw
*hw
= &adapter
->hw
;
8538 if (is_valid_ether_addr(hw
->mac
.san_addr
)) {
8540 err
= dev_addr_add(dev
, hw
->mac
.san_addr
, NETDEV_HW_ADDR_T_SAN
);
8543 /* update SAN MAC vmdq pool selection */
8544 hw
->mac
.ops
.set_vmdq_san_mac(hw
, VMDQ_P(0));
8550 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
8552 * @netdev: network interface device structure
8554 * Returns non-zero on failure
8556 static int ixgbe_del_sanmac_netdev(struct net_device
*dev
)
8559 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8560 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
8562 if (is_valid_ether_addr(mac
->san_addr
)) {
8564 err
= dev_addr_del(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
8570 #ifdef CONFIG_NET_POLL_CONTROLLER
8572 * Polling 'interrupt' - used by things like netconsole to send skbs
8573 * without having to re-enable interrupts. It's not called while
8574 * the interrupt routine is executing.
8576 static void ixgbe_netpoll(struct net_device
*netdev
)
8578 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8581 /* if interface is down do nothing */
8582 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
8585 /* loop through and schedule all active queues */
8586 for (i
= 0; i
< adapter
->num_q_vectors
; i
++)
8587 ixgbe_msix_clean_rings(0, adapter
->q_vector
[i
]);
8592 static void ixgbe_get_ring_stats64(struct rtnl_link_stats64
*stats
,
8593 struct ixgbe_ring
*ring
)
8600 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
8601 packets
= ring
->stats
.packets
;
8602 bytes
= ring
->stats
.bytes
;
8603 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
8604 stats
->tx_packets
+= packets
;
8605 stats
->tx_bytes
+= bytes
;
8609 static void ixgbe_get_stats64(struct net_device
*netdev
,
8610 struct rtnl_link_stats64
*stats
)
8612 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8616 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
8617 struct ixgbe_ring
*ring
= ACCESS_ONCE(adapter
->rx_ring
[i
]);
8623 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
8624 packets
= ring
->stats
.packets
;
8625 bytes
= ring
->stats
.bytes
;
8626 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
8627 stats
->rx_packets
+= packets
;
8628 stats
->rx_bytes
+= bytes
;
8632 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
8633 struct ixgbe_ring
*ring
= ACCESS_ONCE(adapter
->tx_ring
[i
]);
8635 ixgbe_get_ring_stats64(stats
, ring
);
8637 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++) {
8638 struct ixgbe_ring
*ring
= ACCESS_ONCE(adapter
->xdp_ring
[i
]);
8640 ixgbe_get_ring_stats64(stats
, ring
);
8644 /* following stats updated by ixgbe_watchdog_task() */
8645 stats
->multicast
= netdev
->stats
.multicast
;
8646 stats
->rx_errors
= netdev
->stats
.rx_errors
;
8647 stats
->rx_length_errors
= netdev
->stats
.rx_length_errors
;
8648 stats
->rx_crc_errors
= netdev
->stats
.rx_crc_errors
;
8649 stats
->rx_missed_errors
= netdev
->stats
.rx_missed_errors
;
8652 #ifdef CONFIG_IXGBE_DCB
8654 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
8655 * @adapter: pointer to ixgbe_adapter
8656 * @tc: number of traffic classes currently enabled
8658 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
8659 * 802.1Q priority maps to a packet buffer that exists.
8661 static void ixgbe_validate_rtr(struct ixgbe_adapter
*adapter
, u8 tc
)
8663 struct ixgbe_hw
*hw
= &adapter
->hw
;
8667 /* 82598 have a static priority to TC mapping that can not
8668 * be changed so no validation is needed.
8670 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
8673 reg
= IXGBE_READ_REG(hw
, IXGBE_RTRUP2TC
);
8676 for (i
= 0; i
< MAX_TRAFFIC_CLASS
; i
++) {
8677 u8 up2tc
= reg
>> (i
* IXGBE_RTRUP2TC_UP_SHIFT
);
8679 /* If up2tc is out of bounds default to zero */
8681 reg
&= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT
);
8685 IXGBE_WRITE_REG(hw
, IXGBE_RTRUP2TC
, reg
);
8691 * ixgbe_set_prio_tc_map - Configure netdev prio tc map
8692 * @adapter: Pointer to adapter struct
8694 * Populate the netdev user priority to tc map
8696 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter
*adapter
)
8698 struct net_device
*dev
= adapter
->netdev
;
8699 struct ixgbe_dcb_config
*dcb_cfg
= &adapter
->dcb_cfg
;
8700 struct ieee_ets
*ets
= adapter
->ixgbe_ieee_ets
;
8703 for (prio
= 0; prio
< MAX_USER_PRIORITY
; prio
++) {
8706 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_CEE
)
8707 tc
= ixgbe_dcb_get_tc_from_up(dcb_cfg
, 0, prio
);
8709 tc
= ets
->prio_tc
[prio
];
8711 netdev_set_prio_tc_map(dev
, prio
, tc
);
8715 #endif /* CONFIG_IXGBE_DCB */
8717 * ixgbe_setup_tc - configure net_device for multiple traffic classes
8719 * @netdev: net device to configure
8720 * @tc: number of traffic classes to enable
8722 int ixgbe_setup_tc(struct net_device
*dev
, u8 tc
)
8724 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8725 struct ixgbe_hw
*hw
= &adapter
->hw
;
8728 /* Hardware supports up to 8 traffic classes */
8729 if (tc
> adapter
->dcb_cfg
.num_tcs
.pg_tcs
)
8732 if (hw
->mac
.type
== ixgbe_mac_82598EB
&& tc
&& tc
< MAX_TRAFFIC_CLASS
)
8735 pools
= (find_first_zero_bit(&adapter
->fwd_bitmask
, 32) > 1);
8736 if (tc
&& pools
&& adapter
->num_rx_pools
> IXGBE_MAX_DCBMACVLANS
)
8739 /* Hardware has to reinitialize queues and interrupts to
8740 * match packet buffer alignment. Unfortunately, the
8741 * hardware is not flexible enough to do this dynamically.
8743 if (netif_running(dev
))
8746 ixgbe_reset(adapter
);
8748 ixgbe_clear_interrupt_scheme(adapter
);
8750 #ifdef CONFIG_IXGBE_DCB
8752 netdev_set_num_tc(dev
, tc
);
8753 ixgbe_set_prio_tc_map(adapter
);
8755 adapter
->flags
|= IXGBE_FLAG_DCB_ENABLED
;
8757 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
8758 adapter
->last_lfc_mode
= adapter
->hw
.fc
.requested_mode
;
8759 adapter
->hw
.fc
.requested_mode
= ixgbe_fc_none
;
8762 netdev_reset_tc(dev
);
8764 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
8765 adapter
->hw
.fc
.requested_mode
= adapter
->last_lfc_mode
;
8767 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
8769 adapter
->temp_dcb_cfg
.pfc_mode_enable
= false;
8770 adapter
->dcb_cfg
.pfc_mode_enable
= false;
8773 ixgbe_validate_rtr(adapter
, tc
);
8775 #endif /* CONFIG_IXGBE_DCB */
8776 ixgbe_init_interrupt_scheme(adapter
);
8778 if (netif_running(dev
))
8779 return ixgbe_open(dev
);
8784 static int ixgbe_delete_clsu32(struct ixgbe_adapter
*adapter
,
8785 struct tc_cls_u32_offload
*cls
)
8787 u32 hdl
= cls
->knode
.handle
;
8788 u32 uhtid
= TC_U32_USERHTID(cls
->knode
.handle
);
8789 u32 loc
= cls
->knode
.handle
& 0xfffff;
8791 struct ixgbe_jump_table
*jump
= NULL
;
8793 if (loc
> IXGBE_MAX_HW_ENTRIES
)
8796 if ((uhtid
!= 0x800) && (uhtid
>= IXGBE_MAX_LINK_HANDLE
))
8799 /* Clear this filter in the link data it is associated with */
8800 if (uhtid
!= 0x800) {
8801 jump
= adapter
->jump_tables
[uhtid
];
8804 if (!test_bit(loc
- 1, jump
->child_loc_map
))
8806 clear_bit(loc
- 1, jump
->child_loc_map
);
8809 /* Check if the filter being deleted is a link */
8810 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
8811 jump
= adapter
->jump_tables
[i
];
8812 if (jump
&& jump
->link_hdl
== hdl
) {
8813 /* Delete filters in the hardware in the child hash
8814 * table associated with this link
8816 for (j
= 0; j
< IXGBE_MAX_HW_ENTRIES
; j
++) {
8817 if (!test_bit(j
, jump
->child_loc_map
))
8819 spin_lock(&adapter
->fdir_perfect_lock
);
8820 err
= ixgbe_update_ethtool_fdir_entry(adapter
,
8823 spin_unlock(&adapter
->fdir_perfect_lock
);
8824 clear_bit(j
, jump
->child_loc_map
);
8826 /* Remove resources for this link */
8830 adapter
->jump_tables
[i
] = NULL
;
8835 spin_lock(&adapter
->fdir_perfect_lock
);
8836 err
= ixgbe_update_ethtool_fdir_entry(adapter
, NULL
, loc
);
8837 spin_unlock(&adapter
->fdir_perfect_lock
);
8841 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter
*adapter
,
8843 struct tc_cls_u32_offload
*cls
)
8845 u32 uhtid
= TC_U32_USERHTID(cls
->hnode
.handle
);
8847 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8850 /* This ixgbe devices do not support hash tables at the moment
8851 * so abort when given hash tables.
8853 if (cls
->hnode
.divisor
> 0)
8856 set_bit(uhtid
- 1, &adapter
->tables
);
8860 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter
*adapter
,
8861 struct tc_cls_u32_offload
*cls
)
8863 u32 uhtid
= TC_U32_USERHTID(cls
->hnode
.handle
);
8865 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8868 clear_bit(uhtid
- 1, &adapter
->tables
);
8872 #ifdef CONFIG_NET_CLS_ACT
8873 struct upper_walk_data
{
8874 struct ixgbe_adapter
*adapter
;
8880 static int get_macvlan_queue(struct net_device
*upper
, void *_data
)
8882 if (netif_is_macvlan(upper
)) {
8883 struct macvlan_dev
*dfwd
= netdev_priv(upper
);
8884 struct ixgbe_fwd_adapter
*vadapter
= dfwd
->fwd_priv
;
8885 struct upper_walk_data
*data
= _data
;
8886 struct ixgbe_adapter
*adapter
= data
->adapter
;
8887 int ifindex
= data
->ifindex
;
8889 if (vadapter
&& vadapter
->netdev
->ifindex
== ifindex
) {
8890 data
->queue
= adapter
->rx_ring
[vadapter
->rx_base_queue
]->reg_idx
;
8891 data
->action
= data
->queue
;
8899 static int handle_redirect_action(struct ixgbe_adapter
*adapter
, int ifindex
,
8900 u8
*queue
, u64
*action
)
8902 unsigned int num_vfs
= adapter
->num_vfs
, vf
;
8903 struct upper_walk_data data
;
8904 struct net_device
*upper
;
8906 /* redirect to a SRIOV VF */
8907 for (vf
= 0; vf
< num_vfs
; ++vf
) {
8908 upper
= pci_get_drvdata(adapter
->vfinfo
[vf
].vfdev
);
8909 if (upper
->ifindex
== ifindex
) {
8910 if (adapter
->num_rx_pools
> 1)
8913 *queue
= vf
* adapter
->num_rx_queues_per_pool
;
8916 *action
<<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF
;
8921 /* redirect to a offloaded macvlan netdev */
8922 data
.adapter
= adapter
;
8923 data
.ifindex
= ifindex
;
8926 if (netdev_walk_all_upper_dev_rcu(adapter
->netdev
,
8927 get_macvlan_queue
, &data
)) {
8928 *action
= data
.action
;
8929 *queue
= data
.queue
;
8937 static int parse_tc_actions(struct ixgbe_adapter
*adapter
,
8938 struct tcf_exts
*exts
, u64
*action
, u8
*queue
)
8940 const struct tc_action
*a
;
8944 if (tc_no_actions(exts
))
8947 tcf_exts_to_list(exts
, &actions
);
8948 list_for_each_entry(a
, &actions
, list
) {
8951 if (is_tcf_gact_shot(a
)) {
8952 *action
= IXGBE_FDIR_DROP_QUEUE
;
8953 *queue
= IXGBE_FDIR_DROP_QUEUE
;
8957 /* Redirect to a VF or a offloaded macvlan */
8958 if (is_tcf_mirred_egress_redirect(a
)) {
8959 int ifindex
= tcf_mirred_ifindex(a
);
8961 err
= handle_redirect_action(adapter
, ifindex
, queue
,
8971 static int parse_tc_actions(struct ixgbe_adapter
*adapter
,
8972 struct tcf_exts
*exts
, u64
*action
, u8
*queue
)
8976 #endif /* CONFIG_NET_CLS_ACT */
8978 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter
*input
,
8979 union ixgbe_atr_input
*mask
,
8980 struct tc_cls_u32_offload
*cls
,
8981 struct ixgbe_mat_field
*field_ptr
,
8982 struct ixgbe_nexthdr
*nexthdr
)
8986 bool found_entry
= false, found_jump_field
= false;
8988 for (i
= 0; i
< cls
->knode
.sel
->nkeys
; i
++) {
8989 off
= cls
->knode
.sel
->keys
[i
].off
;
8990 val
= cls
->knode
.sel
->keys
[i
].val
;
8991 m
= cls
->knode
.sel
->keys
[i
].mask
;
8993 for (j
= 0; field_ptr
[j
].val
; j
++) {
8994 if (field_ptr
[j
].off
== off
) {
8995 field_ptr
[j
].val(input
, mask
, val
, m
);
8996 input
->filter
.formatted
.flow_type
|=
9003 if (nexthdr
->off
== cls
->knode
.sel
->keys
[i
].off
&&
9004 nexthdr
->val
== cls
->knode
.sel
->keys
[i
].val
&&
9005 nexthdr
->mask
== cls
->knode
.sel
->keys
[i
].mask
)
9006 found_jump_field
= true;
9012 if (nexthdr
&& !found_jump_field
)
9018 mask
->formatted
.flow_type
= IXGBE_ATR_L4TYPE_IPV6_MASK
|
9019 IXGBE_ATR_L4TYPE_MASK
;
9021 if (input
->filter
.formatted
.flow_type
== IXGBE_ATR_FLOW_TYPE_IPV4
)
9022 mask
->formatted
.flow_type
&= IXGBE_ATR_L4TYPE_IPV6_MASK
;
9027 static int ixgbe_configure_clsu32(struct ixgbe_adapter
*adapter
,
9029 struct tc_cls_u32_offload
*cls
)
9031 u32 loc
= cls
->knode
.handle
& 0xfffff;
9032 struct ixgbe_hw
*hw
= &adapter
->hw
;
9033 struct ixgbe_mat_field
*field_ptr
;
9034 struct ixgbe_fdir_filter
*input
= NULL
;
9035 union ixgbe_atr_input
*mask
= NULL
;
9036 struct ixgbe_jump_table
*jump
= NULL
;
9037 int i
, err
= -EINVAL
;
9039 u32 uhtid
, link_uhtid
;
9041 uhtid
= TC_U32_USERHTID(cls
->knode
.handle
);
9042 link_uhtid
= TC_U32_USERHTID(cls
->knode
.link_handle
);
9044 /* At the moment cls_u32 jumps to network layer and skips past
9045 * L2 headers. The canonical method to match L2 frames is to use
9046 * negative values. However this is error prone at best but really
9047 * just broken because there is no way to "know" what sort of hdr
9048 * is in front of the network layer. Fix cls_u32 to support L2
9049 * headers when needed.
9051 if (protocol
!= htons(ETH_P_IP
))
9054 if (loc
>= ((1024 << adapter
->fdir_pballoc
) - 2)) {
9055 e_err(drv
, "Location out of range\n");
9059 /* cls u32 is a graph starting at root node 0x800. The driver tracks
9060 * links and also the fields used to advance the parser across each
9061 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map
9062 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h
9063 * To add support for new nodes update ixgbe_model.h parse structures
9064 * this function _should_ be generic try not to hardcode values here.
9066 if (uhtid
== 0x800) {
9067 field_ptr
= (adapter
->jump_tables
[0])->mat
;
9069 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
9071 if (!adapter
->jump_tables
[uhtid
])
9073 field_ptr
= (adapter
->jump_tables
[uhtid
])->mat
;
9079 /* At this point we know the field_ptr is valid and need to either
9080 * build cls_u32 link or attach filter. Because adding a link to
9081 * a handle that does not exist is invalid and the same for adding
9082 * rules to handles that don't exist.
9086 struct ixgbe_nexthdr
*nexthdr
= ixgbe_ipv4_jumps
;
9088 if (link_uhtid
>= IXGBE_MAX_LINK_HANDLE
)
9091 if (!test_bit(link_uhtid
- 1, &adapter
->tables
))
9094 /* Multiple filters as links to the same hash table are not
9095 * supported. To add a new filter with the same next header
9096 * but different match/jump conditions, create a new hash table
9099 if (adapter
->jump_tables
[link_uhtid
] &&
9100 (adapter
->jump_tables
[link_uhtid
])->link_hdl
) {
9101 e_err(drv
, "Link filter exists for link: %x\n",
9106 for (i
= 0; nexthdr
[i
].jump
; i
++) {
9107 if (nexthdr
[i
].o
!= cls
->knode
.sel
->offoff
||
9108 nexthdr
[i
].s
!= cls
->knode
.sel
->offshift
||
9109 nexthdr
[i
].m
!= cls
->knode
.sel
->offmask
)
9112 jump
= kzalloc(sizeof(*jump
), GFP_KERNEL
);
9115 input
= kzalloc(sizeof(*input
), GFP_KERNEL
);
9120 mask
= kzalloc(sizeof(*mask
), GFP_KERNEL
);
9125 jump
->input
= input
;
9127 jump
->link_hdl
= cls
->knode
.handle
;
9129 err
= ixgbe_clsu32_build_input(input
, mask
, cls
,
9130 field_ptr
, &nexthdr
[i
]);
9132 jump
->mat
= nexthdr
[i
].jump
;
9133 adapter
->jump_tables
[link_uhtid
] = jump
;
9140 input
= kzalloc(sizeof(*input
), GFP_KERNEL
);
9143 mask
= kzalloc(sizeof(*mask
), GFP_KERNEL
);
9149 if ((uhtid
!= 0x800) && (adapter
->jump_tables
[uhtid
])) {
9150 if ((adapter
->jump_tables
[uhtid
])->input
)
9151 memcpy(input
, (adapter
->jump_tables
[uhtid
])->input
,
9153 if ((adapter
->jump_tables
[uhtid
])->mask
)
9154 memcpy(mask
, (adapter
->jump_tables
[uhtid
])->mask
,
9157 /* Lookup in all child hash tables if this location is already
9158 * filled with a filter
9160 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
9161 struct ixgbe_jump_table
*link
= adapter
->jump_tables
[i
];
9163 if (link
&& (test_bit(loc
- 1, link
->child_loc_map
))) {
9164 e_err(drv
, "Filter exists in location: %x\n",
9171 err
= ixgbe_clsu32_build_input(input
, mask
, cls
, field_ptr
, NULL
);
9175 err
= parse_tc_actions(adapter
, cls
->knode
.exts
, &input
->action
,
9180 input
->sw_idx
= loc
;
9182 spin_lock(&adapter
->fdir_perfect_lock
);
9184 if (hlist_empty(&adapter
->fdir_filter_list
)) {
9185 memcpy(&adapter
->fdir_mask
, mask
, sizeof(*mask
));
9186 err
= ixgbe_fdir_set_input_mask_82599(hw
, mask
);
9188 goto err_out_w_lock
;
9189 } else if (memcmp(&adapter
->fdir_mask
, mask
, sizeof(*mask
))) {
9191 goto err_out_w_lock
;
9194 ixgbe_atr_compute_perfect_hash_82599(&input
->filter
, mask
);
9195 err
= ixgbe_fdir_write_perfect_filter_82599(hw
, &input
->filter
,
9196 input
->sw_idx
, queue
);
9198 ixgbe_update_ethtool_fdir_entry(adapter
, input
, input
->sw_idx
);
9199 spin_unlock(&adapter
->fdir_perfect_lock
);
9201 if ((uhtid
!= 0x800) && (adapter
->jump_tables
[uhtid
]))
9202 set_bit(loc
- 1, (adapter
->jump_tables
[uhtid
])->child_loc_map
);
9207 spin_unlock(&adapter
->fdir_perfect_lock
);
9217 static int __ixgbe_setup_tc(struct net_device
*dev
, u32 handle
, u32 chain_index
,
9218 __be16 proto
, struct tc_to_netdev
*tc
)
9220 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9225 if (TC_H_MAJ(handle
) == TC_H_MAJ(TC_H_INGRESS
) &&
9226 tc
->type
== TC_SETUP_CLSU32
) {
9227 switch (tc
->cls_u32
->command
) {
9228 case TC_CLSU32_NEW_KNODE
:
9229 case TC_CLSU32_REPLACE_KNODE
:
9230 return ixgbe_configure_clsu32(adapter
,
9231 proto
, tc
->cls_u32
);
9232 case TC_CLSU32_DELETE_KNODE
:
9233 return ixgbe_delete_clsu32(adapter
, tc
->cls_u32
);
9234 case TC_CLSU32_NEW_HNODE
:
9235 case TC_CLSU32_REPLACE_HNODE
:
9236 return ixgbe_configure_clsu32_add_hnode(adapter
, proto
,
9238 case TC_CLSU32_DELETE_HNODE
:
9239 return ixgbe_configure_clsu32_del_hnode(adapter
,
9246 if (tc
->type
!= TC_SETUP_MQPRIO
)
9249 tc
->mqprio
->hw
= TC_MQPRIO_HW_OFFLOAD_TCS
;
9251 return ixgbe_setup_tc(dev
, tc
->mqprio
->num_tc
);
9254 #ifdef CONFIG_PCI_IOV
9255 void ixgbe_sriov_reinit(struct ixgbe_adapter
*adapter
)
9257 struct net_device
*netdev
= adapter
->netdev
;
9260 ixgbe_setup_tc(netdev
, netdev_get_num_tc(netdev
));
9265 void ixgbe_do_reset(struct net_device
*netdev
)
9267 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
9269 if (netif_running(netdev
))
9270 ixgbe_reinit_locked(adapter
);
9272 ixgbe_reset(adapter
);
9275 static netdev_features_t
ixgbe_fix_features(struct net_device
*netdev
,
9276 netdev_features_t features
)
9278 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
9280 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
9281 if (!(features
& NETIF_F_RXCSUM
))
9282 features
&= ~NETIF_F_LRO
;
9284 /* Turn off LRO if not RSC capable */
9285 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
))
9286 features
&= ~NETIF_F_LRO
;
9291 static int ixgbe_set_features(struct net_device
*netdev
,
9292 netdev_features_t features
)
9294 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
9295 netdev_features_t changed
= netdev
->features
^ features
;
9296 bool need_reset
= false;
9298 /* Make sure RSC matches LRO, reset if change */
9299 if (!(features
& NETIF_F_LRO
)) {
9300 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
9302 adapter
->flags2
&= ~IXGBE_FLAG2_RSC_ENABLED
;
9303 } else if ((adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
) &&
9304 !(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)) {
9305 if (adapter
->rx_itr_setting
== 1 ||
9306 adapter
->rx_itr_setting
> IXGBE_MIN_RSC_ITR
) {
9307 adapter
->flags2
|= IXGBE_FLAG2_RSC_ENABLED
;
9309 } else if ((changed
^ features
) & NETIF_F_LRO
) {
9310 e_info(probe
, "rx-usecs set too low, "
9316 * Check if Flow Director n-tuple support or hw_tc support was
9317 * enabled or disabled. If the state changed, we need to reset.
9319 if ((features
& NETIF_F_NTUPLE
) || (features
& NETIF_F_HW_TC
)) {
9320 /* turn off ATR, enable perfect filters and reset */
9321 if (!(adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
9324 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
9325 adapter
->flags
|= IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
9327 /* turn off perfect filters, enable ATR and reset */
9328 if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
9331 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
9333 /* We cannot enable ATR if SR-IOV is enabled */
9334 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
||
9335 /* We cannot enable ATR if we have 2 or more tcs */
9336 (netdev_get_num_tc(netdev
) > 1) ||
9337 /* We cannot enable ATR if RSS is disabled */
9338 (adapter
->ring_feature
[RING_F_RSS
].limit
<= 1) ||
9339 /* A sample rate of 0 indicates ATR disabled */
9340 (!adapter
->atr_sample_rate
))
9341 ; /* do nothing not supported */
9342 else /* otherwise supported and set the flag */
9343 adapter
->flags
|= IXGBE_FLAG_FDIR_HASH_CAPABLE
;
9346 if (changed
& NETIF_F_RXALL
)
9349 netdev
->features
= features
;
9351 if ((adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
)) {
9352 if (features
& NETIF_F_RXCSUM
) {
9353 adapter
->flags2
|= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED
;
9355 u32 port_mask
= IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK
;
9357 ixgbe_clear_udp_tunnel_port(adapter
, port_mask
);
9361 if ((adapter
->flags
& IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE
)) {
9362 if (features
& NETIF_F_RXCSUM
) {
9363 adapter
->flags2
|= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED
;
9365 u32 port_mask
= IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK
;
9367 ixgbe_clear_udp_tunnel_port(adapter
, port_mask
);
9372 ixgbe_do_reset(netdev
);
9373 else if (changed
& (NETIF_F_HW_VLAN_CTAG_RX
|
9374 NETIF_F_HW_VLAN_CTAG_FILTER
))
9375 ixgbe_set_rx_mode(netdev
);
9381 * ixgbe_add_udp_tunnel_port - Get notifications about adding UDP tunnel ports
9382 * @dev: The port's netdev
9383 * @ti: Tunnel endpoint information
9385 static void ixgbe_add_udp_tunnel_port(struct net_device
*dev
,
9386 struct udp_tunnel_info
*ti
)
9388 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9389 struct ixgbe_hw
*hw
= &adapter
->hw
;
9390 __be16 port
= ti
->port
;
9394 if (ti
->sa_family
!= AF_INET
)
9398 case UDP_TUNNEL_TYPE_VXLAN
:
9399 if (!(adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
))
9402 if (adapter
->vxlan_port
== port
)
9405 if (adapter
->vxlan_port
) {
9407 "VXLAN port %d set, not adding port %d\n",
9408 ntohs(adapter
->vxlan_port
),
9413 adapter
->vxlan_port
= port
;
9415 case UDP_TUNNEL_TYPE_GENEVE
:
9416 if (!(adapter
->flags
& IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE
))
9419 if (adapter
->geneve_port
== port
)
9422 if (adapter
->geneve_port
) {
9424 "GENEVE port %d set, not adding port %d\n",
9425 ntohs(adapter
->geneve_port
),
9430 port_shift
= IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT
;
9431 adapter
->geneve_port
= port
;
9437 reg
= IXGBE_READ_REG(hw
, IXGBE_VXLANCTRL
) | ntohs(port
) << port_shift
;
9438 IXGBE_WRITE_REG(hw
, IXGBE_VXLANCTRL
, reg
);
9442 * ixgbe_del_udp_tunnel_port - Get notifications about removing UDP tunnel ports
9443 * @dev: The port's netdev
9444 * @ti: Tunnel endpoint information
9446 static void ixgbe_del_udp_tunnel_port(struct net_device
*dev
,
9447 struct udp_tunnel_info
*ti
)
9449 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9452 if (ti
->type
!= UDP_TUNNEL_TYPE_VXLAN
&&
9453 ti
->type
!= UDP_TUNNEL_TYPE_GENEVE
)
9456 if (ti
->sa_family
!= AF_INET
)
9460 case UDP_TUNNEL_TYPE_VXLAN
:
9461 if (!(adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
))
9464 if (adapter
->vxlan_port
!= ti
->port
) {
9465 netdev_info(dev
, "VXLAN port %d not found\n",
9470 port_mask
= IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK
;
9472 case UDP_TUNNEL_TYPE_GENEVE
:
9473 if (!(adapter
->flags
& IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE
))
9476 if (adapter
->geneve_port
!= ti
->port
) {
9477 netdev_info(dev
, "GENEVE port %d not found\n",
9482 port_mask
= IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK
;
9488 ixgbe_clear_udp_tunnel_port(adapter
, port_mask
);
9489 adapter
->flags2
|= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED
;
9492 static int ixgbe_ndo_fdb_add(struct ndmsg
*ndm
, struct nlattr
*tb
[],
9493 struct net_device
*dev
,
9494 const unsigned char *addr
, u16 vid
,
9497 /* guarantee we can provide a unique filter for the unicast address */
9498 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
)) {
9499 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9500 u16 pool
= VMDQ_P(0);
9502 if (netdev_uc_count(dev
) >= ixgbe_available_rars(adapter
, pool
))
9506 return ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
, vid
, flags
);
9510 * ixgbe_configure_bridge_mode - set various bridge modes
9511 * @adapter - the private structure
9512 * @mode - requested bridge mode
9514 * Configure some settings require for various bridge modes.
9516 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter
*adapter
,
9519 struct ixgbe_hw
*hw
= &adapter
->hw
;
9520 unsigned int p
, num_pools
;
9524 case BRIDGE_MODE_VEPA
:
9525 /* disable Tx loopback, rely on switch hairpin mode */
9526 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_PFDTXGSWC
, 0);
9528 /* must enable Rx switching replication to allow multicast
9529 * packet reception on all VFs, and to enable source address
9532 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VMD_CTL
);
9533 vmdctl
|= IXGBE_VT_CTL_REPLEN
;
9534 IXGBE_WRITE_REG(hw
, IXGBE_VMD_CTL
, vmdctl
);
9536 /* enable Rx source address pruning. Note, this requires
9537 * replication to be enabled or else it does nothing.
9539 num_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
9540 for (p
= 0; p
< num_pools
; p
++) {
9541 if (hw
->mac
.ops
.set_source_address_pruning
)
9542 hw
->mac
.ops
.set_source_address_pruning(hw
,
9547 case BRIDGE_MODE_VEB
:
9548 /* enable Tx loopback for internal VF/PF communication */
9549 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_PFDTXGSWC
,
9550 IXGBE_PFDTXGSWC_VT_LBEN
);
9552 /* disable Rx switching replication unless we have SR-IOV
9555 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VMD_CTL
);
9556 if (!adapter
->num_vfs
)
9557 vmdctl
&= ~IXGBE_VT_CTL_REPLEN
;
9558 IXGBE_WRITE_REG(hw
, IXGBE_VMD_CTL
, vmdctl
);
9560 /* disable Rx source address pruning, since we don't expect to
9561 * be receiving external loopback of our transmitted frames.
9563 num_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
9564 for (p
= 0; p
< num_pools
; p
++) {
9565 if (hw
->mac
.ops
.set_source_address_pruning
)
9566 hw
->mac
.ops
.set_source_address_pruning(hw
,
9575 adapter
->bridge_mode
= mode
;
9577 e_info(drv
, "enabling bridge mode: %s\n",
9578 mode
== BRIDGE_MODE_VEPA
? "VEPA" : "VEB");
9583 static int ixgbe_ndo_bridge_setlink(struct net_device
*dev
,
9584 struct nlmsghdr
*nlh
, u16 flags
)
9586 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9587 struct nlattr
*attr
, *br_spec
;
9590 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
9593 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
9597 nla_for_each_nested(attr
, br_spec
, rem
) {
9601 if (nla_type(attr
) != IFLA_BRIDGE_MODE
)
9604 if (nla_len(attr
) < sizeof(mode
))
9607 mode
= nla_get_u16(attr
);
9608 status
= ixgbe_configure_bridge_mode(adapter
, mode
);
9618 static int ixgbe_ndo_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
9619 struct net_device
*dev
,
9620 u32 filter_mask
, int nlflags
)
9622 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9624 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
9627 return ndo_dflt_bridge_getlink(skb
, pid
, seq
, dev
,
9628 adapter
->bridge_mode
, 0, 0, nlflags
,
9632 static void *ixgbe_fwd_add(struct net_device
*pdev
, struct net_device
*vdev
)
9634 struct ixgbe_fwd_adapter
*fwd_adapter
= NULL
;
9635 struct ixgbe_adapter
*adapter
= netdev_priv(pdev
);
9636 int used_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
9640 /* Hardware has a limited number of available pools. Each VF, and the
9641 * PF require a pool. Check to ensure we don't attempt to use more
9642 * then the available number of pools.
9644 if (used_pools
>= IXGBE_MAX_VF_FUNCTIONS
)
9645 return ERR_PTR(-EINVAL
);
9648 if (vdev
->num_rx_queues
!= vdev
->num_tx_queues
) {
9649 netdev_info(pdev
, "%s: Only supports a single queue count for TX and RX\n",
9651 return ERR_PTR(-EINVAL
);
9654 /* Check for hardware restriction on number of rx/tx queues */
9655 if (vdev
->num_tx_queues
> IXGBE_MAX_L2A_QUEUES
||
9656 vdev
->num_tx_queues
== IXGBE_BAD_L2A_QUEUE
) {
9658 "%s: Supports RX/TX Queue counts 1,2, and 4\n",
9660 return ERR_PTR(-EINVAL
);
9663 if (((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) &&
9664 adapter
->num_rx_pools
> IXGBE_MAX_DCBMACVLANS
- 1) ||
9665 (adapter
->num_rx_pools
> IXGBE_MAX_MACVLANS
))
9666 return ERR_PTR(-EBUSY
);
9668 fwd_adapter
= kzalloc(sizeof(*fwd_adapter
), GFP_KERNEL
);
9670 return ERR_PTR(-ENOMEM
);
9672 pool
= find_first_zero_bit(&adapter
->fwd_bitmask
, 32);
9673 adapter
->num_rx_pools
++;
9674 set_bit(pool
, &adapter
->fwd_bitmask
);
9675 limit
= find_last_bit(&adapter
->fwd_bitmask
, 32);
9677 /* Enable VMDq flag so device will be set in VM mode */
9678 adapter
->flags
|= IXGBE_FLAG_VMDQ_ENABLED
| IXGBE_FLAG_SRIOV_ENABLED
;
9679 adapter
->ring_feature
[RING_F_VMDQ
].limit
= limit
+ 1;
9680 adapter
->ring_feature
[RING_F_RSS
].limit
= vdev
->num_tx_queues
;
9682 /* Force reinit of ring allocation with VMDQ enabled */
9683 err
= ixgbe_setup_tc(pdev
, netdev_get_num_tc(pdev
));
9686 fwd_adapter
->pool
= pool
;
9687 fwd_adapter
->real_adapter
= adapter
;
9689 if (netif_running(pdev
)) {
9690 err
= ixgbe_fwd_ring_up(vdev
, fwd_adapter
);
9693 netif_tx_start_all_queues(vdev
);
9698 /* unwind counter and free adapter struct */
9700 "%s: dfwd hardware acceleration failed\n", vdev
->name
);
9701 clear_bit(pool
, &adapter
->fwd_bitmask
);
9702 adapter
->num_rx_pools
--;
9704 return ERR_PTR(err
);
9707 static void ixgbe_fwd_del(struct net_device
*pdev
, void *priv
)
9709 struct ixgbe_fwd_adapter
*fwd_adapter
= priv
;
9710 struct ixgbe_adapter
*adapter
= fwd_adapter
->real_adapter
;
9713 clear_bit(fwd_adapter
->pool
, &adapter
->fwd_bitmask
);
9714 adapter
->num_rx_pools
--;
9716 limit
= find_last_bit(&adapter
->fwd_bitmask
, 32);
9717 adapter
->ring_feature
[RING_F_VMDQ
].limit
= limit
+ 1;
9718 ixgbe_fwd_ring_down(fwd_adapter
->netdev
, fwd_adapter
);
9719 ixgbe_setup_tc(pdev
, netdev_get_num_tc(pdev
));
9720 netdev_dbg(pdev
, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
9721 fwd_adapter
->pool
, adapter
->num_rx_pools
,
9722 fwd_adapter
->rx_base_queue
,
9723 fwd_adapter
->rx_base_queue
+ adapter
->num_rx_queues_per_pool
,
9724 adapter
->fwd_bitmask
);
9728 #define IXGBE_MAX_MAC_HDR_LEN 127
9729 #define IXGBE_MAX_NETWORK_HDR_LEN 511
9731 static netdev_features_t
9732 ixgbe_features_check(struct sk_buff
*skb
, struct net_device
*dev
,
9733 netdev_features_t features
)
9735 unsigned int network_hdr_len
, mac_hdr_len
;
9737 /* Make certain the headers can be described by a context descriptor */
9738 mac_hdr_len
= skb_network_header(skb
) - skb
->data
;
9739 if (unlikely(mac_hdr_len
> IXGBE_MAX_MAC_HDR_LEN
))
9740 return features
& ~(NETIF_F_HW_CSUM
|
9742 NETIF_F_HW_VLAN_CTAG_TX
|
9746 network_hdr_len
= skb_checksum_start(skb
) - skb_network_header(skb
);
9747 if (unlikely(network_hdr_len
> IXGBE_MAX_NETWORK_HDR_LEN
))
9748 return features
& ~(NETIF_F_HW_CSUM
|
9753 /* We can only support IPV4 TSO in tunnels if we can mangle the
9754 * inner IP ID field, so strip TSO if MANGLEID is not supported.
9756 if (skb
->encapsulation
&& !(features
& NETIF_F_TSO_MANGLEID
))
9757 features
&= ~NETIF_F_TSO
;
9762 static int ixgbe_xdp_setup(struct net_device
*dev
, struct bpf_prog
*prog
)
9764 int i
, frame_size
= dev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
;
9765 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9766 struct bpf_prog
*old_prog
;
9768 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
9771 if (adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)
9774 /* verify ixgbe ring attributes are sufficient for XDP */
9775 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
9776 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
9778 if (ring_is_rsc_enabled(ring
))
9781 if (frame_size
> ixgbe_rx_bufsz(ring
))
9785 if (nr_cpu_ids
> MAX_XDP_QUEUES
)
9788 old_prog
= xchg(&adapter
->xdp_prog
, prog
);
9790 /* If transitioning XDP modes reconfigure rings */
9791 if (!!prog
!= !!old_prog
) {
9792 int err
= ixgbe_setup_tc(dev
, netdev_get_num_tc(dev
));
9795 rcu_assign_pointer(adapter
->xdp_prog
, old_prog
);
9799 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
9800 xchg(&adapter
->rx_ring
[i
]->xdp_prog
, adapter
->xdp_prog
);
9804 bpf_prog_put(old_prog
);
9809 static int ixgbe_xdp(struct net_device
*dev
, struct netdev_xdp
*xdp
)
9811 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9813 switch (xdp
->command
) {
9814 case XDP_SETUP_PROG
:
9815 return ixgbe_xdp_setup(dev
, xdp
->prog
);
9816 case XDP_QUERY_PROG
:
9817 xdp
->prog_attached
= !!(adapter
->xdp_prog
);
9824 static const struct net_device_ops ixgbe_netdev_ops
= {
9825 .ndo_open
= ixgbe_open
,
9826 .ndo_stop
= ixgbe_close
,
9827 .ndo_start_xmit
= ixgbe_xmit_frame
,
9828 .ndo_select_queue
= ixgbe_select_queue
,
9829 .ndo_set_rx_mode
= ixgbe_set_rx_mode
,
9830 .ndo_validate_addr
= eth_validate_addr
,
9831 .ndo_set_mac_address
= ixgbe_set_mac
,
9832 .ndo_change_mtu
= ixgbe_change_mtu
,
9833 .ndo_tx_timeout
= ixgbe_tx_timeout
,
9834 .ndo_set_tx_maxrate
= ixgbe_tx_maxrate
,
9835 .ndo_vlan_rx_add_vid
= ixgbe_vlan_rx_add_vid
,
9836 .ndo_vlan_rx_kill_vid
= ixgbe_vlan_rx_kill_vid
,
9837 .ndo_do_ioctl
= ixgbe_ioctl
,
9838 .ndo_set_vf_mac
= ixgbe_ndo_set_vf_mac
,
9839 .ndo_set_vf_vlan
= ixgbe_ndo_set_vf_vlan
,
9840 .ndo_set_vf_rate
= ixgbe_ndo_set_vf_bw
,
9841 .ndo_set_vf_spoofchk
= ixgbe_ndo_set_vf_spoofchk
,
9842 .ndo_set_vf_rss_query_en
= ixgbe_ndo_set_vf_rss_query_en
,
9843 .ndo_set_vf_trust
= ixgbe_ndo_set_vf_trust
,
9844 .ndo_get_vf_config
= ixgbe_ndo_get_vf_config
,
9845 .ndo_get_stats64
= ixgbe_get_stats64
,
9846 .ndo_setup_tc
= __ixgbe_setup_tc
,
9847 #ifdef CONFIG_NET_POLL_CONTROLLER
9848 .ndo_poll_controller
= ixgbe_netpoll
,
9851 .ndo_fcoe_ddp_setup
= ixgbe_fcoe_ddp_get
,
9852 .ndo_fcoe_ddp_target
= ixgbe_fcoe_ddp_target
,
9853 .ndo_fcoe_ddp_done
= ixgbe_fcoe_ddp_put
,
9854 .ndo_fcoe_enable
= ixgbe_fcoe_enable
,
9855 .ndo_fcoe_disable
= ixgbe_fcoe_disable
,
9856 .ndo_fcoe_get_wwn
= ixgbe_fcoe_get_wwn
,
9857 .ndo_fcoe_get_hbainfo
= ixgbe_fcoe_get_hbainfo
,
9858 #endif /* IXGBE_FCOE */
9859 .ndo_set_features
= ixgbe_set_features
,
9860 .ndo_fix_features
= ixgbe_fix_features
,
9861 .ndo_fdb_add
= ixgbe_ndo_fdb_add
,
9862 .ndo_bridge_setlink
= ixgbe_ndo_bridge_setlink
,
9863 .ndo_bridge_getlink
= ixgbe_ndo_bridge_getlink
,
9864 .ndo_dfwd_add_station
= ixgbe_fwd_add
,
9865 .ndo_dfwd_del_station
= ixgbe_fwd_del
,
9866 .ndo_udp_tunnel_add
= ixgbe_add_udp_tunnel_port
,
9867 .ndo_udp_tunnel_del
= ixgbe_del_udp_tunnel_port
,
9868 .ndo_features_check
= ixgbe_features_check
,
9869 .ndo_xdp
= ixgbe_xdp
,
9873 * ixgbe_enumerate_functions - Get the number of ports this device has
9874 * @adapter: adapter structure
9876 * This function enumerates the phsyical functions co-located on a single slot,
9877 * in order to determine how many ports a device has. This is most useful in
9878 * determining the required GT/s of PCIe bandwidth necessary for optimal
9881 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter
*adapter
)
9883 struct pci_dev
*entry
, *pdev
= adapter
->pdev
;
9886 /* Some cards can not use the generic count PCIe functions method,
9887 * because they are behind a parent switch, so we hardcode these with
9888 * the correct number of functions.
9890 if (ixgbe_pcie_from_parent(&adapter
->hw
))
9893 list_for_each_entry(entry
, &adapter
->pdev
->bus
->devices
, bus_list
) {
9894 /* don't count virtual functions */
9895 if (entry
->is_virtfn
)
9898 /* When the devices on the bus don't all match our device ID,
9899 * we can't reliably determine the correct number of
9900 * functions. This can occur if a function has been direct
9901 * attached to a virtual machine using VT-d, for example. In
9902 * this case, simply return -1 to indicate this.
9904 if ((entry
->vendor
!= pdev
->vendor
) ||
9905 (entry
->device
!= pdev
->device
))
9915 * ixgbe_wol_supported - Check whether device supports WoL
9916 * @adapter: the adapter private structure
9917 * @device_id: the device ID
9918 * @subdev_id: the subsystem device ID
9920 * This function is used by probe and ethtool to determine
9921 * which devices have WoL support
9924 bool ixgbe_wol_supported(struct ixgbe_adapter
*adapter
, u16 device_id
,
9927 struct ixgbe_hw
*hw
= &adapter
->hw
;
9928 u16 wol_cap
= adapter
->eeprom_cap
& IXGBE_DEVICE_CAPS_WOL_MASK
;
9930 /* WOL not supported on 82598 */
9931 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
9934 /* check eeprom to see if WOL is enabled for X540 and newer */
9935 if (hw
->mac
.type
>= ixgbe_mac_X540
) {
9936 if ((wol_cap
== IXGBE_DEVICE_CAPS_WOL_PORT0_1
) ||
9937 ((wol_cap
== IXGBE_DEVICE_CAPS_WOL_PORT0
) &&
9938 (hw
->bus
.func
== 0)))
9942 /* WOL is determined based on device IDs for 82599 MACs */
9943 switch (device_id
) {
9944 case IXGBE_DEV_ID_82599_SFP
:
9945 /* Only these subdevices could supports WOL */
9946 switch (subdevice_id
) {
9947 case IXGBE_SUBDEV_ID_82599_560FLR
:
9948 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6
:
9949 case IXGBE_SUBDEV_ID_82599_SFP_WOL0
:
9950 case IXGBE_SUBDEV_ID_82599_SFP_2OCP
:
9951 /* only support first port */
9952 if (hw
->bus
.func
!= 0)
9955 case IXGBE_SUBDEV_ID_82599_SP_560FLR
:
9956 case IXGBE_SUBDEV_ID_82599_SFP
:
9957 case IXGBE_SUBDEV_ID_82599_RNDC
:
9958 case IXGBE_SUBDEV_ID_82599_ECNA_DP
:
9959 case IXGBE_SUBDEV_ID_82599_SFP_1OCP
:
9960 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1
:
9961 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2
:
9965 case IXGBE_DEV_ID_82599EN_SFP
:
9966 /* Only these subdevices support WOL */
9967 switch (subdevice_id
) {
9968 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1
:
9972 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE
:
9973 /* All except this subdevice support WOL */
9974 if (subdevice_id
!= IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ
)
9977 case IXGBE_DEV_ID_82599_KX4
:
9987 * ixgbe_probe - Device Initialization Routine
9988 * @pdev: PCI device information struct
9989 * @ent: entry in ixgbe_pci_tbl
9991 * Returns 0 on success, negative on failure
9993 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
9994 * The OS initialization, configuring of the adapter private structure,
9995 * and a hardware reset occur.
9997 static int ixgbe_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
9999 struct net_device
*netdev
;
10000 struct ixgbe_adapter
*adapter
= NULL
;
10001 struct ixgbe_hw
*hw
;
10002 const struct ixgbe_info
*ii
= ixgbe_info_tbl
[ent
->driver_data
];
10003 int i
, err
, pci_using_dac
, expected_gts
;
10004 unsigned int indices
= MAX_TX_QUEUES
;
10005 u8 part_str
[IXGBE_PBANUM_LENGTH
];
10006 bool disable_dev
= false;
10012 /* Catch broken hardware that put the wrong VF device ID in
10013 * the PCIe SR-IOV capability.
10015 if (pdev
->is_virtfn
) {
10016 WARN(1, KERN_ERR
"%s (%hx:%hx) should not be a VF!\n",
10017 pci_name(pdev
), pdev
->vendor
, pdev
->device
);
10021 err
= pci_enable_device_mem(pdev
);
10025 if (!dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64))) {
10028 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
10030 dev_err(&pdev
->dev
,
10031 "No usable DMA configuration, aborting\n");
10037 err
= pci_request_mem_regions(pdev
, ixgbe_driver_name
);
10039 dev_err(&pdev
->dev
,
10040 "pci_request_selected_regions failed 0x%x\n", err
);
10044 pci_enable_pcie_error_reporting(pdev
);
10046 pci_set_master(pdev
);
10047 pci_save_state(pdev
);
10049 if (ii
->mac
== ixgbe_mac_82598EB
) {
10050 #ifdef CONFIG_IXGBE_DCB
10051 /* 8 TC w/ 4 queues per TC */
10052 indices
= 4 * MAX_TRAFFIC_CLASS
;
10054 indices
= IXGBE_MAX_RSS_INDICES
;
10058 netdev
= alloc_etherdev_mq(sizeof(struct ixgbe_adapter
), indices
);
10061 goto err_alloc_etherdev
;
10064 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
10066 adapter
= netdev_priv(netdev
);
10068 adapter
->netdev
= netdev
;
10069 adapter
->pdev
= pdev
;
10071 hw
->back
= adapter
;
10072 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
10074 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
10075 pci_resource_len(pdev
, 0));
10076 adapter
->io_addr
= hw
->hw_addr
;
10077 if (!hw
->hw_addr
) {
10082 netdev
->netdev_ops
= &ixgbe_netdev_ops
;
10083 ixgbe_set_ethtool_ops(netdev
);
10084 netdev
->watchdog_timeo
= 5 * HZ
;
10085 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
10088 hw
->mac
.ops
= *ii
->mac_ops
;
10089 hw
->mac
.type
= ii
->mac
;
10090 hw
->mvals
= ii
->mvals
;
10092 hw
->link
.ops
= *ii
->link_ops
;
10095 hw
->eeprom
.ops
= *ii
->eeprom_ops
;
10096 eec
= IXGBE_READ_REG(hw
, IXGBE_EEC(hw
));
10097 if (ixgbe_removed(hw
->hw_addr
)) {
10101 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
10102 if (!(eec
& BIT(8)))
10103 hw
->eeprom
.ops
.read
= &ixgbe_read_eeprom_bit_bang_generic
;
10106 hw
->phy
.ops
= *ii
->phy_ops
;
10107 hw
->phy
.sfp_type
= ixgbe_sfp_type_unknown
;
10108 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
10109 hw
->phy
.mdio
.prtad
= MDIO_PRTAD_NONE
;
10110 hw
->phy
.mdio
.mmds
= 0;
10111 hw
->phy
.mdio
.mode_support
= MDIO_SUPPORTS_C45
| MDIO_EMULATE_C22
;
10112 hw
->phy
.mdio
.dev
= netdev
;
10113 hw
->phy
.mdio
.mdio_read
= ixgbe_mdio_read
;
10114 hw
->phy
.mdio
.mdio_write
= ixgbe_mdio_write
;
10116 /* setup the private structure */
10117 err
= ixgbe_sw_init(adapter
, ii
);
10121 /* Make sure the SWFW semaphore is in a valid state */
10122 if (hw
->mac
.ops
.init_swfw_sync
)
10123 hw
->mac
.ops
.init_swfw_sync(hw
);
10125 /* Make it possible the adapter to be woken up via WOL */
10126 switch (adapter
->hw
.mac
.type
) {
10127 case ixgbe_mac_82599EB
:
10128 case ixgbe_mac_X540
:
10129 case ixgbe_mac_X550
:
10130 case ixgbe_mac_X550EM_x
:
10131 case ixgbe_mac_x550em_a
:
10132 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
10139 * If there is a fan on this device and it has failed log the
10142 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
10143 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
10144 if (esdp
& IXGBE_ESDP_SDP1
)
10145 e_crit(probe
, "Fan has stopped, replace the adapter\n");
10148 if (allow_unsupported_sfp
)
10149 hw
->allow_unsupported_sfp
= allow_unsupported_sfp
;
10151 /* reset_hw fills in the perm_addr as well */
10152 hw
->phy
.reset_if_overtemp
= true;
10153 err
= hw
->mac
.ops
.reset_hw(hw
);
10154 hw
->phy
.reset_if_overtemp
= false;
10155 ixgbe_set_eee_capable(adapter
);
10156 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
) {
10158 } else if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
10159 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
10160 e_dev_err("Reload the driver after installing a supported module.\n");
10163 e_dev_err("HW Init failed: %d\n", err
);
10167 #ifdef CONFIG_PCI_IOV
10168 /* SR-IOV not supported on the 82598 */
10169 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
10172 ixgbe_init_mbx_params_pf(hw
);
10173 hw
->mbx
.ops
= ii
->mbx_ops
;
10174 pci_sriov_set_totalvfs(pdev
, IXGBE_MAX_VFS_DRV_LIMIT
);
10175 ixgbe_enable_sriov(adapter
, max_vfs
);
10179 netdev
->features
= NETIF_F_SG
|
10186 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
10187 NETIF_F_GSO_GRE_CSUM | \
10188 NETIF_F_GSO_IPXIP4 | \
10189 NETIF_F_GSO_IPXIP6 | \
10190 NETIF_F_GSO_UDP_TUNNEL | \
10191 NETIF_F_GSO_UDP_TUNNEL_CSUM)
10193 netdev
->gso_partial_features
= IXGBE_GSO_PARTIAL_FEATURES
;
10194 netdev
->features
|= NETIF_F_GSO_PARTIAL
|
10195 IXGBE_GSO_PARTIAL_FEATURES
;
10197 if (hw
->mac
.type
>= ixgbe_mac_82599EB
)
10198 netdev
->features
|= NETIF_F_SCTP_CRC
;
10200 /* copy netdev features into list of user selectable features */
10201 netdev
->hw_features
|= netdev
->features
|
10202 NETIF_F_HW_VLAN_CTAG_FILTER
|
10203 NETIF_F_HW_VLAN_CTAG_RX
|
10204 NETIF_F_HW_VLAN_CTAG_TX
|
10206 NETIF_F_HW_L2FW_DOFFLOAD
;
10208 if (hw
->mac
.type
>= ixgbe_mac_82599EB
)
10209 netdev
->hw_features
|= NETIF_F_NTUPLE
|
10213 netdev
->features
|= NETIF_F_HIGHDMA
;
10215 netdev
->vlan_features
|= netdev
->features
| NETIF_F_TSO_MANGLEID
;
10216 netdev
->hw_enc_features
|= netdev
->vlan_features
;
10217 netdev
->mpls_features
|= NETIF_F_SG
|
10221 netdev
->mpls_features
|= IXGBE_GSO_PARTIAL_FEATURES
;
10223 /* set this bit last since it cannot be part of vlan_features */
10224 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
|
10225 NETIF_F_HW_VLAN_CTAG_RX
|
10226 NETIF_F_HW_VLAN_CTAG_TX
;
10228 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
10229 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
10231 /* MTU range: 68 - 9710 */
10232 netdev
->min_mtu
= ETH_MIN_MTU
;
10233 netdev
->max_mtu
= IXGBE_MAX_JUMBO_FRAME_SIZE
- (ETH_HLEN
+ ETH_FCS_LEN
);
10235 #ifdef CONFIG_IXGBE_DCB
10236 if (adapter
->flags
& IXGBE_FLAG_DCB_CAPABLE
)
10237 netdev
->dcbnl_ops
= &ixgbe_dcbnl_ops
;
10241 if (adapter
->flags
& IXGBE_FLAG_FCOE_CAPABLE
) {
10242 unsigned int fcoe_l
;
10244 if (hw
->mac
.ops
.get_device_caps
) {
10245 hw
->mac
.ops
.get_device_caps(hw
, &device_caps
);
10246 if (device_caps
& IXGBE_DEVICE_CAPS_FCOE_OFFLOADS
)
10247 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
10251 fcoe_l
= min_t(int, IXGBE_FCRETA_SIZE
, num_online_cpus());
10252 adapter
->ring_feature
[RING_F_FCOE
].limit
= fcoe_l
;
10254 netdev
->features
|= NETIF_F_FSO
|
10257 netdev
->vlan_features
|= NETIF_F_FSO
|
10261 #endif /* IXGBE_FCOE */
10263 if (adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
)
10264 netdev
->hw_features
|= NETIF_F_LRO
;
10265 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
10266 netdev
->features
|= NETIF_F_LRO
;
10268 /* make sure the EEPROM is good */
10269 if (hw
->eeprom
.ops
.validate_checksum(hw
, NULL
) < 0) {
10270 e_dev_err("The EEPROM Checksum Is Not Valid\n");
10275 eth_platform_get_mac_address(&adapter
->pdev
->dev
,
10276 adapter
->hw
.mac
.perm_addr
);
10278 memcpy(netdev
->dev_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
10280 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
10281 e_dev_err("invalid MAC address\n");
10286 /* Set hw->mac.addr to permanent MAC address */
10287 ether_addr_copy(hw
->mac
.addr
, hw
->mac
.perm_addr
);
10288 ixgbe_mac_set_default_filter(adapter
);
10290 setup_timer(&adapter
->service_timer
, &ixgbe_service_timer
,
10291 (unsigned long) adapter
);
10293 if (ixgbe_removed(hw
->hw_addr
)) {
10297 INIT_WORK(&adapter
->service_task
, ixgbe_service_task
);
10298 set_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
);
10299 clear_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
);
10301 err
= ixgbe_init_interrupt_scheme(adapter
);
10305 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
10306 u64_stats_init(&adapter
->rx_ring
[i
]->syncp
);
10307 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
10308 u64_stats_init(&adapter
->tx_ring
[i
]->syncp
);
10309 for (i
= 0; i
< adapter
->num_xdp_queues
; i
++)
10310 u64_stats_init(&adapter
->xdp_ring
[i
]->syncp
);
10312 /* WOL not supported for all devices */
10314 hw
->eeprom
.ops
.read(hw
, 0x2c, &adapter
->eeprom_cap
);
10315 hw
->wol_enabled
= ixgbe_wol_supported(adapter
, pdev
->device
,
10316 pdev
->subsystem_device
);
10317 if (hw
->wol_enabled
)
10318 adapter
->wol
= IXGBE_WUFC_MAG
;
10320 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
10322 /* save off EEPROM version number */
10323 hw
->eeprom
.ops
.read(hw
, 0x2e, &adapter
->eeprom_verh
);
10324 hw
->eeprom
.ops
.read(hw
, 0x2d, &adapter
->eeprom_verl
);
10326 /* pick up the PCI bus settings for reporting later */
10327 if (ixgbe_pcie_from_parent(hw
))
10328 ixgbe_get_parent_bus_info(adapter
);
10330 hw
->mac
.ops
.get_bus_info(hw
);
10332 /* calculate the expected PCIe bandwidth required for optimal
10333 * performance. Note that some older parts will never have enough
10334 * bandwidth due to being older generation PCIe parts. We clamp these
10335 * parts to ensure no warning is displayed if it can't be fixed.
10337 switch (hw
->mac
.type
) {
10338 case ixgbe_mac_82598EB
:
10339 expected_gts
= min(ixgbe_enumerate_functions(adapter
) * 10, 16);
10342 expected_gts
= ixgbe_enumerate_functions(adapter
) * 10;
10346 /* don't check link if we failed to enumerate functions */
10347 if (expected_gts
> 0)
10348 ixgbe_check_minimum_link(adapter
, expected_gts
);
10350 err
= ixgbe_read_pba_string_generic(hw
, part_str
, sizeof(part_str
));
10352 strlcpy(part_str
, "Unknown", sizeof(part_str
));
10353 if (ixgbe_is_sfp(hw
) && hw
->phy
.sfp_type
!= ixgbe_sfp_type_not_present
)
10354 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
10355 hw
->mac
.type
, hw
->phy
.type
, hw
->phy
.sfp_type
,
10358 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
10359 hw
->mac
.type
, hw
->phy
.type
, part_str
);
10361 e_dev_info("%pM\n", netdev
->dev_addr
);
10363 /* reset the hardware with the new settings */
10364 err
= hw
->mac
.ops
.start_hw(hw
);
10365 if (err
== IXGBE_ERR_EEPROM_VERSION
) {
10366 /* We are running on a pre-production device, log a warning */
10367 e_dev_warn("This device is a pre-production adapter/LOM. "
10368 "Please be aware there may be issues associated "
10369 "with your hardware. If you are experiencing "
10370 "problems please contact your Intel or hardware "
10371 "representative who provided you with this "
10374 strcpy(netdev
->name
, "eth%d");
10375 err
= register_netdev(netdev
);
10379 pci_set_drvdata(pdev
, adapter
);
10381 /* power down the optics for 82599 SFP+ fiber */
10382 if (hw
->mac
.ops
.disable_tx_laser
)
10383 hw
->mac
.ops
.disable_tx_laser(hw
);
10385 /* carrier off reporting is important to ethtool even BEFORE open */
10386 netif_carrier_off(netdev
);
10388 #ifdef CONFIG_IXGBE_DCA
10389 if (dca_add_requester(&pdev
->dev
) == 0) {
10390 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
10391 ixgbe_setup_dca(adapter
);
10394 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
10395 e_info(probe
, "IOV is enabled with %d VFs\n", adapter
->num_vfs
);
10396 for (i
= 0; i
< adapter
->num_vfs
; i
++)
10397 ixgbe_vf_configuration(pdev
, (i
| 0x10000000));
10400 /* firmware requires driver version to be 0xFFFFFFFF
10401 * since os does not support feature
10403 if (hw
->mac
.ops
.set_fw_drv_ver
)
10404 hw
->mac
.ops
.set_fw_drv_ver(hw
, 0xFF, 0xFF, 0xFF, 0xFF,
10405 sizeof(ixgbe_driver_version
) - 1,
10406 ixgbe_driver_version
);
10408 /* add san mac addr to netdev */
10409 ixgbe_add_sanmac_netdev(netdev
);
10411 e_dev_info("%s\n", ixgbe_default_device_descr
);
10413 #ifdef CONFIG_IXGBE_HWMON
10414 if (ixgbe_sysfs_init(adapter
))
10415 e_err(probe
, "failed to allocate sysfs resources\n");
10416 #endif /* CONFIG_IXGBE_HWMON */
10418 ixgbe_dbg_adapter_init(adapter
);
10420 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
10421 if (ixgbe_mng_enabled(hw
) && ixgbe_is_sfp(hw
) && hw
->mac
.ops
.setup_link
)
10422 hw
->mac
.ops
.setup_link(hw
,
10423 IXGBE_LINK_SPEED_10GB_FULL
| IXGBE_LINK_SPEED_1GB_FULL
,
10429 ixgbe_release_hw_control(adapter
);
10430 ixgbe_clear_interrupt_scheme(adapter
);
10432 ixgbe_disable_sriov(adapter
);
10433 adapter
->flags2
&= ~IXGBE_FLAG2_SEARCH_FOR_SFP
;
10434 iounmap(adapter
->io_addr
);
10435 kfree(adapter
->jump_tables
[0]);
10436 kfree(adapter
->mac_table
);
10437 kfree(adapter
->rss_key
);
10439 disable_dev
= !test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
);
10440 free_netdev(netdev
);
10441 err_alloc_etherdev
:
10442 pci_release_mem_regions(pdev
);
10445 if (!adapter
|| disable_dev
)
10446 pci_disable_device(pdev
);
10451 * ixgbe_remove - Device Removal Routine
10452 * @pdev: PCI device information struct
10454 * ixgbe_remove is called by the PCI subsystem to alert the driver
10455 * that it should release a PCI device. The could be caused by a
10456 * Hot-Plug event, or because the driver is going to be removed from
10459 static void ixgbe_remove(struct pci_dev
*pdev
)
10461 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
10462 struct net_device
*netdev
;
10466 /* if !adapter then we already cleaned up in probe */
10470 netdev
= adapter
->netdev
;
10471 ixgbe_dbg_adapter_exit(adapter
);
10473 set_bit(__IXGBE_REMOVING
, &adapter
->state
);
10474 cancel_work_sync(&adapter
->service_task
);
10477 #ifdef CONFIG_IXGBE_DCA
10478 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
10479 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
10480 dca_remove_requester(&pdev
->dev
);
10481 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
10482 IXGBE_DCA_CTRL_DCA_DISABLE
);
10486 #ifdef CONFIG_IXGBE_HWMON
10487 ixgbe_sysfs_exit(adapter
);
10488 #endif /* CONFIG_IXGBE_HWMON */
10490 /* remove the added san mac */
10491 ixgbe_del_sanmac_netdev(netdev
);
10493 #ifdef CONFIG_PCI_IOV
10494 ixgbe_disable_sriov(adapter
);
10496 if (netdev
->reg_state
== NETREG_REGISTERED
)
10497 unregister_netdev(netdev
);
10499 ixgbe_clear_interrupt_scheme(adapter
);
10501 ixgbe_release_hw_control(adapter
);
10504 kfree(adapter
->ixgbe_ieee_pfc
);
10505 kfree(adapter
->ixgbe_ieee_ets
);
10508 iounmap(adapter
->io_addr
);
10509 pci_release_mem_regions(pdev
);
10511 e_dev_info("complete\n");
10513 for (i
= 0; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
10514 if (adapter
->jump_tables
[i
]) {
10515 kfree(adapter
->jump_tables
[i
]->input
);
10516 kfree(adapter
->jump_tables
[i
]->mask
);
10518 kfree(adapter
->jump_tables
[i
]);
10521 kfree(adapter
->mac_table
);
10522 kfree(adapter
->rss_key
);
10523 disable_dev
= !test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
);
10524 free_netdev(netdev
);
10526 pci_disable_pcie_error_reporting(pdev
);
10529 pci_disable_device(pdev
);
10533 * ixgbe_io_error_detected - called when PCI error is detected
10534 * @pdev: Pointer to PCI device
10535 * @state: The current pci connection state
10537 * This function is called after a PCI bus error affecting
10538 * this device has been detected.
10540 static pci_ers_result_t
ixgbe_io_error_detected(struct pci_dev
*pdev
,
10541 pci_channel_state_t state
)
10543 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
10544 struct net_device
*netdev
= adapter
->netdev
;
10546 #ifdef CONFIG_PCI_IOV
10547 struct ixgbe_hw
*hw
= &adapter
->hw
;
10548 struct pci_dev
*bdev
, *vfdev
;
10549 u32 dw0
, dw1
, dw2
, dw3
;
10551 u16 req_id
, pf_func
;
10553 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
||
10554 adapter
->num_vfs
== 0)
10555 goto skip_bad_vf_detection
;
10557 bdev
= pdev
->bus
->self
;
10558 while (bdev
&& (pci_pcie_type(bdev
) != PCI_EXP_TYPE_ROOT_PORT
))
10559 bdev
= bdev
->bus
->self
;
10562 goto skip_bad_vf_detection
;
10564 pos
= pci_find_ext_capability(bdev
, PCI_EXT_CAP_ID_ERR
);
10566 goto skip_bad_vf_detection
;
10568 dw0
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
);
10569 dw1
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 4);
10570 dw2
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 8);
10571 dw3
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 12);
10572 if (ixgbe_removed(hw
->hw_addr
))
10573 goto skip_bad_vf_detection
;
10575 req_id
= dw1
>> 16;
10576 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
10577 if (!(req_id
& 0x0080))
10578 goto skip_bad_vf_detection
;
10580 pf_func
= req_id
& 0x01;
10581 if ((pf_func
& 1) == (pdev
->devfn
& 1)) {
10582 unsigned int device_id
;
10584 vf
= (req_id
& 0x7F) >> 1;
10585 e_dev_err("VF %d has caused a PCIe error\n", vf
);
10586 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
10587 "%8.8x\tdw3: %8.8x\n",
10588 dw0
, dw1
, dw2
, dw3
);
10589 switch (adapter
->hw
.mac
.type
) {
10590 case ixgbe_mac_82599EB
:
10591 device_id
= IXGBE_82599_VF_DEVICE_ID
;
10593 case ixgbe_mac_X540
:
10594 device_id
= IXGBE_X540_VF_DEVICE_ID
;
10596 case ixgbe_mac_X550
:
10597 device_id
= IXGBE_DEV_ID_X550_VF
;
10599 case ixgbe_mac_X550EM_x
:
10600 device_id
= IXGBE_DEV_ID_X550EM_X_VF
;
10602 case ixgbe_mac_x550em_a
:
10603 device_id
= IXGBE_DEV_ID_X550EM_A_VF
;
10610 /* Find the pci device of the offending VF */
10611 vfdev
= pci_get_device(PCI_VENDOR_ID_INTEL
, device_id
, NULL
);
10613 if (vfdev
->devfn
== (req_id
& 0xFF))
10615 vfdev
= pci_get_device(PCI_VENDOR_ID_INTEL
,
10619 * There's a slim chance the VF could have been hot plugged,
10620 * so if it is no longer present we don't need to issue the
10621 * VFLR. Just clean up the AER in that case.
10625 /* Free device reference count */
10626 pci_dev_put(vfdev
);
10629 pci_cleanup_aer_uncorrect_error_status(pdev
);
10633 * Even though the error may have occurred on the other port
10634 * we still need to increment the vf error reference count for
10635 * both ports because the I/O resume function will be called
10636 * for both of them.
10638 adapter
->vferr_refcount
++;
10640 return PCI_ERS_RESULT_RECOVERED
;
10642 skip_bad_vf_detection
:
10643 #endif /* CONFIG_PCI_IOV */
10644 if (!test_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
))
10645 return PCI_ERS_RESULT_DISCONNECT
;
10648 netif_device_detach(netdev
);
10650 if (state
== pci_channel_io_perm_failure
) {
10652 return PCI_ERS_RESULT_DISCONNECT
;
10655 if (netif_running(netdev
))
10656 ixgbe_close_suspend(adapter
);
10658 if (!test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
))
10659 pci_disable_device(pdev
);
10662 /* Request a slot reset. */
10663 return PCI_ERS_RESULT_NEED_RESET
;
10667 * ixgbe_io_slot_reset - called after the pci bus has been reset.
10668 * @pdev: Pointer to PCI device
10670 * Restart the card from scratch, as if from a cold-boot.
10672 static pci_ers_result_t
ixgbe_io_slot_reset(struct pci_dev
*pdev
)
10674 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
10675 pci_ers_result_t result
;
10678 if (pci_enable_device_mem(pdev
)) {
10679 e_err(probe
, "Cannot re-enable PCI device after reset.\n");
10680 result
= PCI_ERS_RESULT_DISCONNECT
;
10682 smp_mb__before_atomic();
10683 clear_bit(__IXGBE_DISABLED
, &adapter
->state
);
10684 adapter
->hw
.hw_addr
= adapter
->io_addr
;
10685 pci_set_master(pdev
);
10686 pci_restore_state(pdev
);
10687 pci_save_state(pdev
);
10689 pci_wake_from_d3(pdev
, false);
10691 ixgbe_reset(adapter
);
10692 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
10693 result
= PCI_ERS_RESULT_RECOVERED
;
10696 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
10698 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
10699 "failed 0x%0x\n", err
);
10700 /* non-fatal, continue */
10707 * ixgbe_io_resume - called when traffic can start flowing again.
10708 * @pdev: Pointer to PCI device
10710 * This callback is called when the error recovery driver tells us that
10711 * its OK to resume normal operation.
10713 static void ixgbe_io_resume(struct pci_dev
*pdev
)
10715 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
10716 struct net_device
*netdev
= adapter
->netdev
;
10718 #ifdef CONFIG_PCI_IOV
10719 if (adapter
->vferr_refcount
) {
10720 e_info(drv
, "Resuming after VF err\n");
10721 adapter
->vferr_refcount
--;
10727 if (netif_running(netdev
))
10728 ixgbe_open(netdev
);
10730 netif_device_attach(netdev
);
10734 static const struct pci_error_handlers ixgbe_err_handler
= {
10735 .error_detected
= ixgbe_io_error_detected
,
10736 .slot_reset
= ixgbe_io_slot_reset
,
10737 .resume
= ixgbe_io_resume
,
10740 static struct pci_driver ixgbe_driver
= {
10741 .name
= ixgbe_driver_name
,
10742 .id_table
= ixgbe_pci_tbl
,
10743 .probe
= ixgbe_probe
,
10744 .remove
= ixgbe_remove
,
10746 .suspend
= ixgbe_suspend
,
10747 .resume
= ixgbe_resume
,
10749 .shutdown
= ixgbe_shutdown
,
10750 .sriov_configure
= ixgbe_pci_sriov_configure
,
10751 .err_handler
= &ixgbe_err_handler
10755 * ixgbe_init_module - Driver Registration Routine
10757 * ixgbe_init_module is the first routine called when the driver is
10758 * loaded. All it does is register with the PCI subsystem.
10760 static int __init
ixgbe_init_module(void)
10763 pr_info("%s - version %s\n", ixgbe_driver_string
, ixgbe_driver_version
);
10764 pr_info("%s\n", ixgbe_copyright
);
10766 ixgbe_wq
= create_singlethread_workqueue(ixgbe_driver_name
);
10768 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name
);
10774 ret
= pci_register_driver(&ixgbe_driver
);
10776 destroy_workqueue(ixgbe_wq
);
10781 #ifdef CONFIG_IXGBE_DCA
10782 dca_register_notify(&dca_notifier
);
10788 module_init(ixgbe_init_module
);
10791 * ixgbe_exit_module - Driver Exit Cleanup Routine
10793 * ixgbe_exit_module is called just before the driver is removed
10796 static void __exit
ixgbe_exit_module(void)
10798 #ifdef CONFIG_IXGBE_DCA
10799 dca_unregister_notify(&dca_notifier
);
10801 pci_unregister_driver(&ixgbe_driver
);
10805 destroy_workqueue(ixgbe_wq
);
10810 #ifdef CONFIG_IXGBE_DCA
10811 static int ixgbe_notify_dca(struct notifier_block
*nb
, unsigned long event
,
10816 ret_val
= driver_for_each_device(&ixgbe_driver
.driver
, NULL
, &event
,
10817 __ixgbe_notify_dca
);
10819 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
10822 #endif /* CONFIG_IXGBE_DCA */
10824 module_exit(ixgbe_exit_module
);