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ixgbe: return early instead of wrap block in if statement
[linux-2.6/btrfs-unstable.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob16952d33730e6b29b7775ebe47aec653f79cfe0b
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2015 Intel Corporation.
5
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
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
26
27 *******************************************************************************/
28
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>
35 #include <linux/in.h>
36 #include <linux/ip.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #include <linux/if_bridge.h>
40 #ifdef NETIF_F_HW_VLAN_CTAG_TX
41 #include <linux/if_vlan.h>
42 #endif
43
44 #include "ixgbe.h"
45 #include "ixgbe_type.h"
46 #include "ixgbe_sriov.h"
47
48 #ifdef CONFIG_PCI_IOV
49 static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter)
50 {
51 struct ixgbe_hw *hw = &adapter->hw;
52 struct vf_macvlans *mv_list;
53 int num_vf_macvlans, i;
54
55 num_vf_macvlans = hw->mac.num_rar_entries -
56 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
57 if (!num_vf_macvlans)
58 return;
59
60 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
61 GFP_KERNEL);
62 if (mv_list) {
63 /* Initialize list of VF macvlans */
64 INIT_LIST_HEAD(&adapter->vf_mvs.l);
65 for (i = 0; i < num_vf_macvlans; i++) {
66 mv_list[i].vf = -1;
67 mv_list[i].free = true;
68 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
69 }
70 adapter->mv_list = mv_list;
71 }
72 }
73
74 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
75 {
76 struct ixgbe_hw *hw = &adapter->hw;
77 int i;
78
79 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
80
81 /* Enable VMDq flag so device will be set in VM mode */
82 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
83 if (!adapter->ring_feature[RING_F_VMDQ].limit)
84 adapter->ring_feature[RING_F_VMDQ].limit = 1;
85 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
86
87 /* If call to enable VFs succeeded then allocate memory
88 * for per VF control structures.
89 */
90 adapter->vfinfo = kcalloc(adapter->num_vfs,
91 sizeof(struct vf_data_storage), GFP_KERNEL);
92 if (!adapter->vfinfo)
93 return -ENOMEM;
94
95 ixgbe_alloc_vf_macvlans(adapter);
96
97 /* Initialize default switching mode VEB */
98 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
99 adapter->bridge_mode = BRIDGE_MODE_VEB;
100
101 /* limit trafffic classes based on VFs enabled */
102 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
103 (adapter->num_vfs < 16)) {
104 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
105 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
106 } else if (adapter->num_vfs < 32) {
107 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
108 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
109 } else {
110 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
111 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
112 }
113
114 /* Disable RSC when in SR-IOV mode */
115 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
116 IXGBE_FLAG2_RSC_ENABLED);
117
118 for (i = 0; i < adapter->num_vfs; i++) {
119 /* enable spoof checking for all VFs */
120 adapter->vfinfo[i].spoofchk_enabled = true;
121
122 /* We support VF RSS querying only for 82599 and x540
123 * devices at the moment. These devices share RSS
124 * indirection table and RSS hash key with PF therefore
125 * we want to disable the querying by default.
126 */
127 adapter->vfinfo[i].rss_query_enabled = 0;
128
129 /* Untrust all VFs */
130 adapter->vfinfo[i].trusted = false;
131
132 /* set the default xcast mode */
133 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
134 }
135
136 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
137 return 0;
138 }
139
140 /**
141 * ixgbe_get_vfs - Find and take references to all vf devices
142 * @adapter: Pointer to adapter struct
143 */
144 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
145 {
146 struct pci_dev *pdev = adapter->pdev;
147 u16 vendor = pdev->vendor;
148 struct pci_dev *vfdev;
149 int vf = 0;
150 u16 vf_id;
151 int pos;
152
153 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
154 if (!pos)
155 return;
156 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
157
158 vfdev = pci_get_device(vendor, vf_id, NULL);
159 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
160 if (!vfdev->is_virtfn)
161 continue;
162 if (vfdev->physfn != pdev)
163 continue;
164 if (vf >= adapter->num_vfs)
165 continue;
166 pci_dev_get(vfdev);
167 adapter->vfinfo[vf].vfdev = vfdev;
168 ++vf;
169 }
170 }
171
172 /* Note this function is called when the user wants to enable SR-IOV
173 * VFs using the now deprecated module parameter
174 */
175 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
176 {
177 int pre_existing_vfs = 0;
178
179 pre_existing_vfs = pci_num_vf(adapter->pdev);
180 if (!pre_existing_vfs && !adapter->num_vfs)
181 return;
182
183 /* If there are pre-existing VFs then we have to force
184 * use of that many - over ride any module parameter value.
185 * This may result from the user unloading the PF driver
186 * while VFs were assigned to guest VMs or because the VFs
187 * have been created via the new PCI SR-IOV sysfs interface.
188 */
189 if (pre_existing_vfs) {
190 adapter->num_vfs = pre_existing_vfs;
191 dev_warn(&adapter->pdev->dev,
192 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
193 } else {
194 int err;
195 /*
196 * The 82599 supports up to 64 VFs per physical function
197 * but this implementation limits allocation to 63 so that
198 * basic networking resources are still available to the
199 * physical function. If the user requests greater than
200 * 63 VFs then it is an error - reset to default of zero.
201 */
202 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
203
204 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
205 if (err) {
206 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
207 adapter->num_vfs = 0;
208 return;
209 }
210 }
211
212 if (!__ixgbe_enable_sriov(adapter)) {
213 ixgbe_get_vfs(adapter);
214 return;
215 }
216
217 /* If we have gotten to this point then there is no memory available
218 * to manage the VF devices - print message and bail.
219 */
220 e_err(probe, "Unable to allocate memory for VF Data Storage - "
221 "SRIOV disabled\n");
222 ixgbe_disable_sriov(adapter);
223 }
224
225 #endif /* #ifdef CONFIG_PCI_IOV */
226 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
227 {
228 unsigned int num_vfs = adapter->num_vfs, vf;
229 struct ixgbe_hw *hw = &adapter->hw;
230 u32 gpie;
231 u32 vmdctl;
232 int rss;
233
234 /* set num VFs to 0 to prevent access to vfinfo */
235 adapter->num_vfs = 0;
236
237 /* put the reference to all of the vf devices */
238 for (vf = 0; vf < num_vfs; ++vf) {
239 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
240
241 if (!vfdev)
242 continue;
243 adapter->vfinfo[vf].vfdev = NULL;
244 pci_dev_put(vfdev);
245 }
246
247 /* free VF control structures */
248 kfree(adapter->vfinfo);
249 adapter->vfinfo = NULL;
250
251 /* free macvlan list */
252 kfree(adapter->mv_list);
253 adapter->mv_list = NULL;
254
255 /* if SR-IOV is already disabled then there is nothing to do */
256 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
257 return 0;
258
259 #ifdef CONFIG_PCI_IOV
260 /*
261 * If our VFs are assigned we cannot shut down SR-IOV
262 * without causing issues, so just leave the hardware
263 * available but disabled
264 */
265 if (pci_vfs_assigned(adapter->pdev)) {
266 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
267 return -EPERM;
268 }
269 /* disable iov and allow time for transactions to clear */
270 pci_disable_sriov(adapter->pdev);
271 #endif
272
273 /* turn off device IOV mode */
274 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
275 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
276 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
277 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
278
279 /* set default pool back to 0 */
280 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
281 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
282 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
283 IXGBE_WRITE_FLUSH(hw);
284
285 /* Disable VMDq flag so device will be set in VM mode */
286 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
287 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
288 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
289 rss = min_t(int, ixgbe_max_rss_indices(adapter),
290 num_online_cpus());
291 } else {
292 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
293 }
294
295 adapter->ring_feature[RING_F_VMDQ].offset = 0;
296 adapter->ring_feature[RING_F_RSS].limit = rss;
297
298 /* take a breather then clean up driver data */
299 msleep(100);
300 return 0;
301 }
302
303 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
304 {
305 #ifdef CONFIG_PCI_IOV
306 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
307 int err = 0;
308 u8 num_tc;
309 int i;
310 int pre_existing_vfs = pci_num_vf(dev);
311
312 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
313 err = ixgbe_disable_sriov(adapter);
314 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
315 return num_vfs;
316
317 if (err)
318 return err;
319
320 /* While the SR-IOV capability structure reports total VFs to be 64,
321 * we limit the actual number allocated as below based on two factors.
322 * Num_TCs MAX_VFs
323 * 1 63
324 * <=4 31
325 * >4 15
326 * First, we reserve some transmit/receive resources for the PF.
327 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
328 * account for this, so that we don't accidentally allocate more VFs
329 * than we have available pools. The PCI bus driver already checks for
330 * other values out of range.
331 */
332 num_tc = netdev_get_num_tc(adapter->netdev);
333
334 if (num_tc > 4) {
335 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_8TC) {
336 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_8TC);
337 return -EPERM;
338 }
339 } else if ((num_tc > 1) && (num_tc <= 4)) {
340 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_4TC) {
341 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_4TC);
342 return -EPERM;
343 }
344 } else {
345 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VFS_1TC) {
346 e_dev_err("Currently the device is configured with %d TCs, Creating more than %d VFs is not allowed\n", num_tc, IXGBE_MAX_VFS_1TC);
347 return -EPERM;
348 }
349 }
350 adapter->num_vfs = num_vfs;
351
352 err = __ixgbe_enable_sriov(adapter);
353 if (err)
354 return err;
355
356 for (i = 0; i < adapter->num_vfs; i++)
357 ixgbe_vf_configuration(dev, (i | 0x10000000));
358
359 /* reset before enabling SRIOV to avoid mailbox issues */
360 ixgbe_sriov_reinit(adapter);
361
362 err = pci_enable_sriov(dev, num_vfs);
363 if (err) {
364 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
365 return err;
366 }
367 ixgbe_get_vfs(adapter);
368
369 return num_vfs;
370 #else
371 return 0;
372 #endif
373 }
374
375 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
376 {
377 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
378 int err;
379 #ifdef CONFIG_PCI_IOV
380 u32 current_flags = adapter->flags;
381 #endif
382
383 err = ixgbe_disable_sriov(adapter);
384
385 /* Only reinit if no error and state changed */
386 #ifdef CONFIG_PCI_IOV
387 if (!err && current_flags != adapter->flags)
388 ixgbe_sriov_reinit(adapter);
389 #endif
390
391 return err;
392 }
393
394 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
395 {
396 if (num_vfs == 0)
397 return ixgbe_pci_sriov_disable(dev);
398 else
399 return ixgbe_pci_sriov_enable(dev, num_vfs);
400 }
401
402 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
403 u32 *msgbuf, u32 vf)
404 {
405 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
406 >> IXGBE_VT_MSGINFO_SHIFT;
407 u16 *hash_list = (u16 *)&msgbuf[1];
408 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
409 struct ixgbe_hw *hw = &adapter->hw;
410 int i;
411 u32 vector_bit;
412 u32 vector_reg;
413 u32 mta_reg;
414 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
415
416 /* only so many hash values supported */
417 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
418
419 /*
420 * salt away the number of multi cast addresses assigned
421 * to this VF for later use to restore when the PF multi cast
422 * list changes
423 */
424 vfinfo->num_vf_mc_hashes = entries;
425
426 /*
427 * VFs are limited to using the MTA hash table for their multicast
428 * addresses
429 */
430 for (i = 0; i < entries; i++) {
431 vfinfo->vf_mc_hashes[i] = hash_list[i];
432 }
433
434 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
435 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
436 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
437 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
438 mta_reg |= BIT(vector_bit);
439 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
440 }
441 vmolr |= IXGBE_VMOLR_ROMPE;
442 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
443
444 return 0;
445 }
446
447 #ifdef CONFIG_PCI_IOV
448 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
449 {
450 struct ixgbe_hw *hw = &adapter->hw;
451 struct vf_data_storage *vfinfo;
452 int i, j;
453 u32 vector_bit;
454 u32 vector_reg;
455 u32 mta_reg;
456
457 for (i = 0; i < adapter->num_vfs; i++) {
458 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
459 vfinfo = &adapter->vfinfo[i];
460 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
461 hw->addr_ctrl.mta_in_use++;
462 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
463 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
464 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
465 mta_reg |= BIT(vector_bit);
466 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
467 }
468
469 if (vfinfo->num_vf_mc_hashes)
470 vmolr |= IXGBE_VMOLR_ROMPE;
471 else
472 vmolr &= ~IXGBE_VMOLR_ROMPE;
473 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
474 }
475
476 /* Restore any VF macvlans */
477 ixgbe_full_sync_mac_table(adapter);
478 }
479 #endif
480
481 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
482 u32 vf)
483 {
484 struct ixgbe_hw *hw = &adapter->hw;
485 int err;
486
487 /* If VLAN overlaps with one the PF is currently monitoring make
488 * sure that we are able to allocate a VLVF entry. This may be
489 * redundant but it guarantees PF will maintain visibility to
490 * the VLAN.
491 */
492 if (add && test_bit(vid, adapter->active_vlans)) {
493 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
494 if (err)
495 return err;
496 }
497
498 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
499
500 if (add && !err)
501 return err;
502
503 /* If we failed to add the VF VLAN or we are removing the VF VLAN
504 * we may need to drop the PF pool bit in order to allow us to free
505 * up the VLVF resources.
506 */
507 if (test_bit(vid, adapter->active_vlans) ||
508 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
509 ixgbe_update_pf_promisc_vlvf(adapter, vid);
510
511 return err;
512 }
513
514 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
515 {
516 struct ixgbe_hw *hw = &adapter->hw;
517 int max_frame = msgbuf[1];
518 u32 max_frs;
519
520 /*
521 * For 82599EB we have to keep all PFs and VFs operating with
522 * the same max_frame value in order to avoid sending an oversize
523 * frame to a VF. In order to guarantee this is handled correctly
524 * for all cases we have several special exceptions to take into
525 * account before we can enable the VF for receive
526 */
527 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
528 struct net_device *dev = adapter->netdev;
529 int pf_max_frame = dev->mtu + ETH_HLEN;
530 u32 reg_offset, vf_shift, vfre;
531 s32 err = 0;
532
533 #ifdef CONFIG_FCOE
534 if (dev->features & NETIF_F_FCOE_MTU)
535 pf_max_frame = max_t(int, pf_max_frame,
536 IXGBE_FCOE_JUMBO_FRAME_SIZE);
537
538 #endif /* CONFIG_FCOE */
539 switch (adapter->vfinfo[vf].vf_api) {
540 case ixgbe_mbox_api_11:
541 case ixgbe_mbox_api_12:
542 case ixgbe_mbox_api_13:
543 /*
544 * Version 1.1 supports jumbo frames on VFs if PF has
545 * jumbo frames enabled which means legacy VFs are
546 * disabled
547 */
548 if (pf_max_frame > ETH_FRAME_LEN)
549 break;
550 default:
551 /*
552 * If the PF or VF are running w/ jumbo frames enabled
553 * we need to shut down the VF Rx path as we cannot
554 * support jumbo frames on legacy VFs
555 */
556 if ((pf_max_frame > ETH_FRAME_LEN) ||
557 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
558 err = -EINVAL;
559 break;
560 }
561
562 /* determine VF receive enable location */
563 vf_shift = vf % 32;
564 reg_offset = vf / 32;
565
566 /* enable or disable receive depending on error */
567 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
568 if (err)
569 vfre &= ~BIT(vf_shift);
570 else
571 vfre |= BIT(vf_shift);
572 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
573
574 if (err) {
575 e_err(drv, "VF max_frame %d out of range\n", max_frame);
576 return err;
577 }
578 }
579
580 /* MTU < 68 is an error and causes problems on some kernels */
581 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
582 e_err(drv, "VF max_frame %d out of range\n", max_frame);
583 return -EINVAL;
584 }
585
586 /* pull current max frame size from hardware */
587 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
588 max_frs &= IXGBE_MHADD_MFS_MASK;
589 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
590
591 if (max_frs < max_frame) {
592 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
593 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
594 }
595
596 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
597
598 return 0;
599 }
600
601 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
602 {
603 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
604 vmolr |= IXGBE_VMOLR_BAM;
605 if (aupe)
606 vmolr |= IXGBE_VMOLR_AUPE;
607 else
608 vmolr &= ~IXGBE_VMOLR_AUPE;
609 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
610 }
611
612 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
613 {
614 struct ixgbe_hw *hw = &adapter->hw;
615
616 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
617 }
618
619 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
620 {
621 struct ixgbe_hw *hw = &adapter->hw;
622 u32 vlvfb_mask, pool_mask, i;
623
624 /* create mask for VF and other pools */
625 pool_mask = ~BIT(VMDQ_P(0) % 32);
626 vlvfb_mask = BIT(vf % 32);
627
628 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
629 for (i = IXGBE_VLVF_ENTRIES; i--;) {
630 u32 bits[2], vlvfb, vid, vfta, vlvf;
631 u32 word = i * 2 + vf / 32;
632 u32 mask;
633
634 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
635
636 /* if our bit isn't set we can skip it */
637 if (!(vlvfb & vlvfb_mask))
638 continue;
639
640 /* clear our bit from vlvfb */
641 vlvfb ^= vlvfb_mask;
642
643 /* create 64b mask to chedk to see if we should clear VLVF */
644 bits[word % 2] = vlvfb;
645 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
646
647 /* if other pools are present, just remove ourselves */
648 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
649 (bits[VMDQ_P(0) / 32] & pool_mask))
650 goto update_vlvfb;
651
652 /* if PF is present, leave VFTA */
653 if (bits[0] || bits[1])
654 goto update_vlvf;
655
656 /* if we cannot determine VLAN just remove ourselves */
657 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
658 if (!vlvf)
659 goto update_vlvfb;
660
661 vid = vlvf & VLAN_VID_MASK;
662 mask = BIT(vid % 32);
663
664 /* clear bit from VFTA */
665 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
666 if (vfta & mask)
667 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
668 update_vlvf:
669 /* clear POOL selection enable */
670 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
671
672 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
673 vlvfb = 0;
674 update_vlvfb:
675 /* clear pool bits */
676 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
677 }
678 }
679
680 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
681 {
682 struct ixgbe_hw *hw = &adapter->hw;
683 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
684 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
685
686 /* remove VLAN filters beloning to this VF */
687 ixgbe_clear_vf_vlans(adapter, vf);
688
689 /* add back PF assigned VLAN or VLAN 0 */
690 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
691
692 /* reset offloads to defaults */
693 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
694
695 /* set outgoing tags for VFs */
696 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
697 ixgbe_clear_vmvir(adapter, vf);
698 } else {
699 if (vfinfo->pf_qos || !num_tcs)
700 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
701 vfinfo->pf_qos, vf);
702 else
703 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
704 adapter->default_up, vf);
705
706 if (vfinfo->spoofchk_enabled)
707 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
708 }
709
710 /* reset multicast table array for vf */
711 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
712
713 /* Flush and reset the mta with the new values */
714 ixgbe_set_rx_mode(adapter->netdev);
715
716 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
717
718 /* reset VF api back to unknown */
719 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
720 }
721
722 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
723 int vf, unsigned char *mac_addr)
724 {
725 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
726 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
727 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
728
729 return 0;
730 }
731
732 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
733 int vf, int index, unsigned char *mac_addr)
734 {
735 struct list_head *pos;
736 struct vf_macvlans *entry;
737
738 if (index <= 1) {
739 list_for_each(pos, &adapter->vf_mvs.l) {
740 entry = list_entry(pos, struct vf_macvlans, l);
741 if (entry->vf == vf) {
742 entry->vf = -1;
743 entry->free = true;
744 entry->is_macvlan = false;
745 ixgbe_del_mac_filter(adapter,
746 entry->vf_macvlan, vf);
747 }
748 }
749 }
750
751 /*
752 * If index was zero then we were asked to clear the uc list
753 * for the VF. We're done.
754 */
755 if (!index)
756 return 0;
757
758 entry = NULL;
759
760 list_for_each(pos, &adapter->vf_mvs.l) {
761 entry = list_entry(pos, struct vf_macvlans, l);
762 if (entry->free)
763 break;
764 }
765
766 /*
767 * If we traversed the entire list and didn't find a free entry
768 * then we're out of space on the RAR table. Also entry may
769 * be NULL because the original memory allocation for the list
770 * failed, which is not fatal but does mean we can't support
771 * VF requests for MACVLAN because we couldn't allocate
772 * memory for the list management required.
773 */
774 if (!entry || !entry->free)
775 return -ENOSPC;
776
777 entry->free = false;
778 entry->is_macvlan = true;
779 entry->vf = vf;
780 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
781
782 ixgbe_add_mac_filter(adapter, mac_addr, vf);
783
784 return 0;
785 }
786
787 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
788 {
789 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
790 unsigned int vfn = (event_mask & 0x3f);
791
792 bool enable = ((event_mask & 0x10000000U) != 0);
793
794 if (enable)
795 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
796
797 return 0;
798 }
799
800 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
801 u32 qde)
802 {
803 struct ixgbe_hw *hw = &adapter->hw;
804 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
805 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
806 int i;
807
808 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
809 u32 reg;
810
811 /* flush previous write */
812 IXGBE_WRITE_FLUSH(hw);
813
814 /* indicate to hardware that we want to set drop enable */
815 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
816 reg |= i << IXGBE_QDE_IDX_SHIFT;
817 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
818 }
819 }
820
821 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
822 {
823 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
824 struct ixgbe_hw *hw = &adapter->hw;
825 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
826 u32 reg, reg_offset, vf_shift;
827 u32 msgbuf[4] = {0, 0, 0, 0};
828 u8 *addr = (u8 *)(&msgbuf[1]);
829 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
830 int i;
831
832 e_info(probe, "VF Reset msg received from vf %d\n", vf);
833
834 /* reset the filters for the device */
835 ixgbe_vf_reset_event(adapter, vf);
836
837 /* set vf mac address */
838 if (!is_zero_ether_addr(vf_mac))
839 ixgbe_set_vf_mac(adapter, vf, vf_mac);
840
841 vf_shift = vf % 32;
842 reg_offset = vf / 32;
843
844 /* enable transmit for vf */
845 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
846 reg |= BIT(vf_shift);
847 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
848
849 /* force drop enable for all VF Rx queues */
850 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
851
852 /* enable receive for vf */
853 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
854 reg |= BIT(vf_shift);
855 /*
856 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
857 * For more info take a look at ixgbe_set_vf_lpe
858 */
859 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
860 struct net_device *dev = adapter->netdev;
861 int pf_max_frame = dev->mtu + ETH_HLEN;
862
863 #ifdef CONFIG_FCOE
864 if (dev->features & NETIF_F_FCOE_MTU)
865 pf_max_frame = max_t(int, pf_max_frame,
866 IXGBE_FCOE_JUMBO_FRAME_SIZE);
867
868 #endif /* CONFIG_FCOE */
869 if (pf_max_frame > ETH_FRAME_LEN)
870 reg &= ~BIT(vf_shift);
871 }
872 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
873
874 /* enable VF mailbox for further messages */
875 adapter->vfinfo[vf].clear_to_send = true;
876
877 /* Enable counting of spoofed packets in the SSVPC register */
878 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
879 reg |= BIT(vf_shift);
880 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
881
882 /*
883 * Reset the VFs TDWBAL and TDWBAH registers
884 * which are not cleared by an FLR
885 */
886 for (i = 0; i < q_per_pool; i++) {
887 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
888 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
889 }
890
891 /* reply to reset with ack and vf mac address */
892 msgbuf[0] = IXGBE_VF_RESET;
893 if (!is_zero_ether_addr(vf_mac)) {
894 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
895 memcpy(addr, vf_mac, ETH_ALEN);
896 } else {
897 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
898 dev_warn(&adapter->pdev->dev,
899 "VF %d has no MAC address assigned, you may have to assign one manually\n",
900 vf);
901 }
902
903 /*
904 * Piggyback the multicast filter type so VF can compute the
905 * correct vectors
906 */
907 msgbuf[3] = hw->mac.mc_filter_type;
908 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
909
910 return 0;
911 }
912
913 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
914 u32 *msgbuf, u32 vf)
915 {
916 u8 *new_mac = ((u8 *)(&msgbuf[1]));
917
918 if (!is_valid_ether_addr(new_mac)) {
919 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
920 return -1;
921 }
922
923 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
924 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
925 e_warn(drv,
926 "VF %d attempted to override administratively set MAC address\n"
927 "Reload the VF driver to resume operations\n",
928 vf);
929 return -1;
930 }
931
932 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
933 }
934
935 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
936 u32 *msgbuf, u32 vf)
937 {
938 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
939 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
940 u8 tcs = netdev_get_num_tc(adapter->netdev);
941
942 if (adapter->vfinfo[vf].pf_vlan || tcs) {
943 e_warn(drv,
944 "VF %d attempted to override administratively set VLAN configuration\n"
945 "Reload the VF driver to resume operations\n",
946 vf);
947 return -1;
948 }
949
950 /* VLAN 0 is a special case, don't allow it to be removed */
951 if (!vid && !add)
952 return 0;
953
954 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
955 }
956
957 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
958 u32 *msgbuf, u32 vf)
959 {
960 u8 *new_mac = ((u8 *)(&msgbuf[1]));
961 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
962 IXGBE_VT_MSGINFO_SHIFT;
963 int err;
964
965 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
966 index > 0) {
967 e_warn(drv,
968 "VF %d requested MACVLAN filter but is administratively denied\n",
969 vf);
970 return -1;
971 }
972
973 /* An non-zero index indicates the VF is setting a filter */
974 if (index) {
975 if (!is_valid_ether_addr(new_mac)) {
976 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
977 return -1;
978 }
979
980 /*
981 * If the VF is allowed to set MAC filters then turn off
982 * anti-spoofing to avoid false positives.
983 */
984 if (adapter->vfinfo[vf].spoofchk_enabled) {
985 struct ixgbe_hw *hw = &adapter->hw;
986
987 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
988 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
989 }
990 }
991
992 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
993 if (err == -ENOSPC)
994 e_warn(drv,
995 "VF %d has requested a MACVLAN filter but there is no space for it\n",
996 vf);
997
998 return err < 0;
999 }
1000
1001 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1002 u32 *msgbuf, u32 vf)
1003 {
1004 int api = msgbuf[1];
1005
1006 switch (api) {
1007 case ixgbe_mbox_api_10:
1008 case ixgbe_mbox_api_11:
1009 case ixgbe_mbox_api_12:
1010 case ixgbe_mbox_api_13:
1011 adapter->vfinfo[vf].vf_api = api;
1012 return 0;
1013 default:
1014 break;
1015 }
1016
1017 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1018
1019 return -1;
1020 }
1021
1022 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1023 u32 *msgbuf, u32 vf)
1024 {
1025 struct net_device *dev = adapter->netdev;
1026 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1027 unsigned int default_tc = 0;
1028 u8 num_tcs = netdev_get_num_tc(dev);
1029
1030 /* verify the PF is supporting the correct APIs */
1031 switch (adapter->vfinfo[vf].vf_api) {
1032 case ixgbe_mbox_api_20:
1033 case ixgbe_mbox_api_11:
1034 case ixgbe_mbox_api_12:
1035 case ixgbe_mbox_api_13:
1036 break;
1037 default:
1038 return -1;
1039 }
1040
1041 /* only allow 1 Tx queue for bandwidth limiting */
1042 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1043 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1044
1045 /* if TCs > 1 determine which TC belongs to default user priority */
1046 if (num_tcs > 1)
1047 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1048
1049 /* notify VF of need for VLAN tag stripping, and correct queue */
1050 if (num_tcs)
1051 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1052 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1053 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1054 else
1055 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1056
1057 /* notify VF of default queue */
1058 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1059
1060 return 0;
1061 }
1062
1063 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1064 {
1065 u32 i, j;
1066 u32 *out_buf = &msgbuf[1];
1067 const u8 *reta = adapter->rss_indir_tbl;
1068 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1069
1070 /* Check if operation is permitted */
1071 if (!adapter->vfinfo[vf].rss_query_enabled)
1072 return -EPERM;
1073
1074 /* verify the PF is supporting the correct API */
1075 switch (adapter->vfinfo[vf].vf_api) {
1076 case ixgbe_mbox_api_13:
1077 case ixgbe_mbox_api_12:
1078 break;
1079 default:
1080 return -EOPNOTSUPP;
1081 }
1082
1083 /* This mailbox command is supported (required) only for 82599 and x540
1084 * VFs which support up to 4 RSS queues. Therefore we will compress the
1085 * RETA by saving only 2 bits from each entry. This way we will be able
1086 * to transfer the whole RETA in a single mailbox operation.
1087 */
1088 for (i = 0; i < reta_size / 16; i++) {
1089 out_buf[i] = 0;
1090 for (j = 0; j < 16; j++)
1091 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1092 }
1093
1094 return 0;
1095 }
1096
1097 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1098 u32 *msgbuf, u32 vf)
1099 {
1100 u32 *rss_key = &msgbuf[1];
1101
1102 /* Check if the operation is permitted */
1103 if (!adapter->vfinfo[vf].rss_query_enabled)
1104 return -EPERM;
1105
1106 /* verify the PF is supporting the correct API */
1107 switch (adapter->vfinfo[vf].vf_api) {
1108 case ixgbe_mbox_api_13:
1109 case ixgbe_mbox_api_12:
1110 break;
1111 default:
1112 return -EOPNOTSUPP;
1113 }
1114
1115 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key));
1116
1117 return 0;
1118 }
1119
1120 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1121 u32 *msgbuf, u32 vf)
1122 {
1123 struct ixgbe_hw *hw = &adapter->hw;
1124 int xcast_mode = msgbuf[1];
1125 u32 vmolr, fctrl, disable, enable;
1126
1127 /* verify the PF is supporting the correct APIs */
1128 switch (adapter->vfinfo[vf].vf_api) {
1129 case ixgbe_mbox_api_12:
1130 /* promisc introduced in 1.3 version */
1131 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1132 return -EOPNOTSUPP;
1133 /* Fall threw */
1134 case ixgbe_mbox_api_13:
1135 break;
1136 default:
1137 return -EOPNOTSUPP;
1138 }
1139
1140 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1141 !adapter->vfinfo[vf].trusted) {
1142 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1143 }
1144
1145 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1146 goto out;
1147
1148 switch (xcast_mode) {
1149 case IXGBEVF_XCAST_MODE_NONE:
1150 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1151 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1152 enable = 0;
1153 break;
1154 case IXGBEVF_XCAST_MODE_MULTI:
1155 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1156 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1157 break;
1158 case IXGBEVF_XCAST_MODE_ALLMULTI:
1159 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1160 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1161 break;
1162 case IXGBEVF_XCAST_MODE_PROMISC:
1163 if (hw->mac.type <= ixgbe_mac_82599EB)
1164 return -EOPNOTSUPP;
1165
1166 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1167 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1168 /* VF promisc requires PF in promisc */
1169 e_warn(drv,
1170 "Enabling VF promisc requires PF in promisc\n");
1171 return -EPERM;
1172 }
1173
1174 disable = 0;
1175 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1176 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1177 break;
1178 default:
1179 return -EOPNOTSUPP;
1180 }
1181
1182 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1183 vmolr &= ~disable;
1184 vmolr |= enable;
1185 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1186
1187 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1188
1189 out:
1190 msgbuf[1] = xcast_mode;
1191
1192 return 0;
1193 }
1194
1195 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1196 {
1197 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1198 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1199 struct ixgbe_hw *hw = &adapter->hw;
1200 s32 retval;
1201
1202 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1203
1204 if (retval) {
1205 pr_err("Error receiving message from VF\n");
1206 return retval;
1207 }
1208
1209 /* this is a message we already processed, do nothing */
1210 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1211 return 0;
1212
1213 /* flush the ack before we write any messages back */
1214 IXGBE_WRITE_FLUSH(hw);
1215
1216 if (msgbuf[0] == IXGBE_VF_RESET)
1217 return ixgbe_vf_reset_msg(adapter, vf);
1218
1219 /*
1220 * until the vf completes a virtual function reset it should not be
1221 * allowed to start any configuration.
1222 */
1223 if (!adapter->vfinfo[vf].clear_to_send) {
1224 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1225 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1226 return 0;
1227 }
1228
1229 switch ((msgbuf[0] & 0xFFFF)) {
1230 case IXGBE_VF_SET_MAC_ADDR:
1231 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1232 break;
1233 case IXGBE_VF_SET_MULTICAST:
1234 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1235 break;
1236 case IXGBE_VF_SET_VLAN:
1237 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1238 break;
1239 case IXGBE_VF_SET_LPE:
1240 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1241 break;
1242 case IXGBE_VF_SET_MACVLAN:
1243 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1244 break;
1245 case IXGBE_VF_API_NEGOTIATE:
1246 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1247 break;
1248 case IXGBE_VF_GET_QUEUES:
1249 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1250 break;
1251 case IXGBE_VF_GET_RETA:
1252 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1253 break;
1254 case IXGBE_VF_GET_RSS_KEY:
1255 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1256 break;
1257 case IXGBE_VF_UPDATE_XCAST_MODE:
1258 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1259 break;
1260 default:
1261 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1262 retval = IXGBE_ERR_MBX;
1263 break;
1264 }
1265
1266 /* notify the VF of the results of what it sent us */
1267 if (retval)
1268 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1269 else
1270 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1271
1272 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1273
1274 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1275
1276 return retval;
1277 }
1278
1279 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1280 {
1281 struct ixgbe_hw *hw = &adapter->hw;
1282 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1283
1284 /* if device isn't clear to send it shouldn't be reading either */
1285 if (!adapter->vfinfo[vf].clear_to_send)
1286 ixgbe_write_mbx(hw, &msg, 1, vf);
1287 }
1288
1289 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1290 {
1291 struct ixgbe_hw *hw = &adapter->hw;
1292 u32 vf;
1293
1294 for (vf = 0; vf < adapter->num_vfs; vf++) {
1295 /* process any reset requests */
1296 if (!ixgbe_check_for_rst(hw, vf))
1297 ixgbe_vf_reset_event(adapter, vf);
1298
1299 /* process any messages pending */
1300 if (!ixgbe_check_for_msg(hw, vf))
1301 ixgbe_rcv_msg_from_vf(adapter, vf);
1302
1303 /* process any acks */
1304 if (!ixgbe_check_for_ack(hw, vf))
1305 ixgbe_rcv_ack_from_vf(adapter, vf);
1306 }
1307 }
1308
1309 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1310 {
1311 struct ixgbe_hw *hw = &adapter->hw;
1312
1313 /* disable transmit and receive for all vfs */
1314 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1315 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1316
1317 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1318 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1319 }
1320
1321 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1322 {
1323 struct ixgbe_hw *hw = &adapter->hw;
1324 u32 ping;
1325
1326 ping = IXGBE_PF_CONTROL_MSG;
1327 if (adapter->vfinfo[vf].clear_to_send)
1328 ping |= IXGBE_VT_MSGTYPE_CTS;
1329 ixgbe_write_mbx(hw, &ping, 1, vf);
1330 }
1331
1332 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1333 {
1334 struct ixgbe_hw *hw = &adapter->hw;
1335 u32 ping;
1336 int i;
1337
1338 for (i = 0 ; i < adapter->num_vfs; i++) {
1339 ping = IXGBE_PF_CONTROL_MSG;
1340 if (adapter->vfinfo[i].clear_to_send)
1341 ping |= IXGBE_VT_MSGTYPE_CTS;
1342 ixgbe_write_mbx(hw, &ping, 1, i);
1343 }
1344 }
1345
1346 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1347 {
1348 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1349 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1350 return -EINVAL;
1351 adapter->vfinfo[vf].pf_set_mac = true;
1352 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1353 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1354 " change effective.");
1355 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1356 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1357 " but the PF device is not up.\n");
1358 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1359 " attempting to use the VF device.\n");
1360 }
1361 return ixgbe_set_vf_mac(adapter, vf, mac);
1362 }
1363
1364 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1365 u16 vlan, u8 qos)
1366 {
1367 struct ixgbe_hw *hw = &adapter->hw;
1368 int err;
1369
1370 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1371 if (err)
1372 goto out;
1373
1374 /* Revoke tagless access via VLAN 0 */
1375 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1376
1377 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1378 ixgbe_set_vmolr(hw, vf, false);
1379
1380 /* enable hide vlan on X550 */
1381 if (hw->mac.type >= ixgbe_mac_X550)
1382 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1383 IXGBE_QDE_HIDE_VLAN);
1384
1385 adapter->vfinfo[vf].pf_vlan = vlan;
1386 adapter->vfinfo[vf].pf_qos = qos;
1387 dev_info(&adapter->pdev->dev,
1388 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1389 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1390 dev_warn(&adapter->pdev->dev,
1391 "The VF VLAN has been set, but the PF device is not up.\n");
1392 dev_warn(&adapter->pdev->dev,
1393 "Bring the PF device up before attempting to use the VF device.\n");
1394 }
1395
1396 out:
1397 return err;
1398 }
1399
1400 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1401 {
1402 struct ixgbe_hw *hw = &adapter->hw;
1403 int err;
1404
1405 err = ixgbe_set_vf_vlan(adapter, false,
1406 adapter->vfinfo[vf].pf_vlan, vf);
1407 /* Restore tagless access via VLAN 0 */
1408 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1409 ixgbe_clear_vmvir(adapter, vf);
1410 ixgbe_set_vmolr(hw, vf, true);
1411
1412 /* disable hide VLAN on X550 */
1413 if (hw->mac.type >= ixgbe_mac_X550)
1414 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1415
1416 adapter->vfinfo[vf].pf_vlan = 0;
1417 adapter->vfinfo[vf].pf_qos = 0;
1418
1419 return err;
1420 }
1421
1422 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1423 u8 qos, __be16 vlan_proto)
1424 {
1425 int err = 0;
1426 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1427
1428 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1429 return -EINVAL;
1430 if (vlan_proto != htons(ETH_P_8021Q))
1431 return -EPROTONOSUPPORT;
1432 if (vlan || qos) {
1433 /* Check if there is already a port VLAN set, if so
1434 * we have to delete the old one first before we
1435 * can set the new one. The usage model had
1436 * previously assumed the user would delete the
1437 * old port VLAN before setting a new one but this
1438 * is not necessarily the case.
1439 */
1440 if (adapter->vfinfo[vf].pf_vlan)
1441 err = ixgbe_disable_port_vlan(adapter, vf);
1442 if (err)
1443 goto out;
1444 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1445 } else {
1446 err = ixgbe_disable_port_vlan(adapter, vf);
1447 }
1448
1449 out:
1450 return err;
1451 }
1452
1453 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1454 {
1455 switch (adapter->link_speed) {
1456 case IXGBE_LINK_SPEED_100_FULL:
1457 return 100;
1458 case IXGBE_LINK_SPEED_1GB_FULL:
1459 return 1000;
1460 case IXGBE_LINK_SPEED_10GB_FULL:
1461 return 10000;
1462 default:
1463 return 0;
1464 }
1465 }
1466
1467 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1468 {
1469 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1470 struct ixgbe_hw *hw = &adapter->hw;
1471 u32 bcnrc_val = 0;
1472 u16 queue, queues_per_pool;
1473 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1474
1475 if (tx_rate) {
1476 /* start with base link speed value */
1477 bcnrc_val = adapter->vf_rate_link_speed;
1478
1479 /* Calculate the rate factor values to set */
1480 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1481 bcnrc_val /= tx_rate;
1482
1483 /* clear everything but the rate factor */
1484 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1485 IXGBE_RTTBCNRC_RF_DEC_MASK;
1486
1487 /* enable the rate scheduler */
1488 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1489 }
1490
1491 /*
1492 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1493 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1494 * and 0x004 otherwise.
1495 */
1496 switch (hw->mac.type) {
1497 case ixgbe_mac_82599EB:
1498 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1499 break;
1500 case ixgbe_mac_X540:
1501 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1502 break;
1503 default:
1504 break;
1505 }
1506
1507 /* determine how many queues per pool based on VMDq mask */
1508 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1509
1510 /* write value for all Tx queues belonging to VF */
1511 for (queue = 0; queue < queues_per_pool; queue++) {
1512 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1513
1514 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1515 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1516 }
1517 }
1518
1519 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1520 {
1521 int i;
1522
1523 /* VF Tx rate limit was not set */
1524 if (!adapter->vf_rate_link_speed)
1525 return;
1526
1527 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1528 adapter->vf_rate_link_speed = 0;
1529 dev_info(&adapter->pdev->dev,
1530 "Link speed has been changed. VF Transmit rate is disabled\n");
1531 }
1532
1533 for (i = 0; i < adapter->num_vfs; i++) {
1534 if (!adapter->vf_rate_link_speed)
1535 adapter->vfinfo[i].tx_rate = 0;
1536
1537 ixgbe_set_vf_rate_limit(adapter, i);
1538 }
1539 }
1540
1541 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1542 int max_tx_rate)
1543 {
1544 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1545 int link_speed;
1546
1547 /* verify VF is active */
1548 if (vf >= adapter->num_vfs)
1549 return -EINVAL;
1550
1551 /* verify link is up */
1552 if (!adapter->link_up)
1553 return -EINVAL;
1554
1555 /* verify we are linked at 10Gbps */
1556 link_speed = ixgbe_link_mbps(adapter);
1557 if (link_speed != 10000)
1558 return -EINVAL;
1559
1560 if (min_tx_rate)
1561 return -EINVAL;
1562
1563 /* rate limit cannot be less than 10Mbs or greater than link speed */
1564 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1565 return -EINVAL;
1566
1567 /* store values */
1568 adapter->vf_rate_link_speed = link_speed;
1569 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1570
1571 /* update hardware configuration */
1572 ixgbe_set_vf_rate_limit(adapter, vf);
1573
1574 return 0;
1575 }
1576
1577 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1578 {
1579 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1580 struct ixgbe_hw *hw = &adapter->hw;
1581
1582 if (vf >= adapter->num_vfs)
1583 return -EINVAL;
1584
1585 adapter->vfinfo[vf].spoofchk_enabled = setting;
1586
1587 /* configure MAC spoofing */
1588 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1589
1590 /* configure VLAN spoofing */
1591 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1592
1593 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1594 * calling set_ethertype_anti_spoofing for each VF in loop below
1595 */
1596 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1597 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1598 (IXGBE_ETQF_FILTER_EN |
1599 IXGBE_ETQF_TX_ANTISPOOF |
1600 IXGBE_ETH_P_LLDP));
1601
1602 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1603 (IXGBE_ETQF_FILTER_EN |
1604 IXGBE_ETQF_TX_ANTISPOOF |
1605 ETH_P_PAUSE));
1606
1607 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1608 }
1609
1610 return 0;
1611 }
1612
1613 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1614 bool setting)
1615 {
1616 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1617
1618 /* This operation is currently supported only for 82599 and x540
1619 * devices.
1620 */
1621 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1622 adapter->hw.mac.type >= ixgbe_mac_X550)
1623 return -EOPNOTSUPP;
1624
1625 if (vf >= adapter->num_vfs)
1626 return -EINVAL;
1627
1628 adapter->vfinfo[vf].rss_query_enabled = setting;
1629
1630 return 0;
1631 }
1632
1633 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1634 {
1635 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1636
1637 if (vf >= adapter->num_vfs)
1638 return -EINVAL;
1639
1640 /* nothing to do */
1641 if (adapter->vfinfo[vf].trusted == setting)
1642 return 0;
1643
1644 adapter->vfinfo[vf].trusted = setting;
1645
1646 /* reset VF to reconfigure features */
1647 adapter->vfinfo[vf].clear_to_send = false;
1648 ixgbe_ping_vf(adapter, vf);
1649
1650 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1651
1652 return 0;
1653 }
1654
1655 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1656 int vf, struct ifla_vf_info *ivi)
1657 {
1658 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1659 if (vf >= adapter->num_vfs)
1660 return -EINVAL;
1661 ivi->vf = vf;
1662 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1663 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1664 ivi->min_tx_rate = 0;
1665 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1666 ivi->qos = adapter->vfinfo[vf].pf_qos;
1667 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1668 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1669 ivi->trusted = adapter->vfinfo[vf].trusted;
1670 return 0;
1671 }
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