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ixgbe: Fix return value from macvlan filter function
[linux-2.6/cjktty.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob8bdb341c14bf7fb025a29636aeecc6b36211c6bf
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26 *******************************************************************************/
27
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
34 #include <linux/in.h>
35 #include <linux/ip.h>
36 #include <linux/tcp.h>
37 #include <linux/ipv6.h>
38 #ifdef NETIF_F_HW_VLAN_TX
39 #include <linux/if_vlan.h>
40 #endif
41
42 #include "ixgbe.h"
43 #include "ixgbe_type.h"
44 #include "ixgbe_sriov.h"
45
46 #ifdef CONFIG_PCI_IOV
47 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
48 const struct ixgbe_info *ii)
49 {
50 struct ixgbe_hw *hw = &adapter->hw;
51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
53 int pre_existing_vfs = 0;
54
55 pre_existing_vfs = pci_num_vf(adapter->pdev);
56 if (!pre_existing_vfs && !adapter->num_vfs)
57 return;
58
59 /* If there are pre-existing VFs then we have to force
60 * use of that many because they were not deleted the last
61 * time someone removed the PF driver. That would have
62 * been because they were allocated to guest VMs and can't
63 * be removed. Go ahead and just re-enable the old amount.
64 * If the user wants to change the number of VFs they can
65 * use ethtool while making sure no VFs are allocated to
66 * guest VMs... i.e. the right way.
67 */
68 if (pre_existing_vfs) {
69 adapter->num_vfs = pre_existing_vfs;
70 dev_warn(&adapter->pdev->dev, "Virtual Functions already "
71 "enabled for this device - Please reload all "
72 "VF drivers to avoid spoofed packet errors\n");
73 } else {
74 int err;
75 /*
76 * The 82599 supports up to 64 VFs per physical function
77 * but this implementation limits allocation to 63 so that
78 * basic networking resources are still available to the
79 * physical function. If the user requests greater thn
80 * 63 VFs then it is an error - reset to default of zero.
81 */
82 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63);
83
84 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
85 if (err) {
86 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
87 adapter->num_vfs = 0;
88 return;
89 }
90 }
91
92 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
93 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
94
95 /* Enable VMDq flag so device will be set in VM mode */
96 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
97 if (!adapter->ring_feature[RING_F_VMDQ].limit)
98 adapter->ring_feature[RING_F_VMDQ].limit = 1;
99 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
100
101 num_vf_macvlans = hw->mac.num_rar_entries -
102 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
103
104 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
105 sizeof(struct vf_macvlans),
106 GFP_KERNEL);
107 if (mv_list) {
108 /* Initialize list of VF macvlans */
109 INIT_LIST_HEAD(&adapter->vf_mvs.l);
110 for (i = 0; i < num_vf_macvlans; i++) {
111 mv_list->vf = -1;
112 mv_list->free = true;
113 mv_list->rar_entry = hw->mac.num_rar_entries -
114 (i + adapter->num_vfs + 1);
115 list_add(&mv_list->l, &adapter->vf_mvs.l);
116 mv_list++;
117 }
118 }
119
120 /* If call to enable VFs succeeded then allocate memory
121 * for per VF control structures.
122 */
123 adapter->vfinfo =
124 kcalloc(adapter->num_vfs,
125 sizeof(struct vf_data_storage), GFP_KERNEL);
126 if (adapter->vfinfo) {
127 /* Now that we're sure SR-IOV is enabled
128 * and memory allocated set up the mailbox parameters
129 */
130 ixgbe_init_mbx_params_pf(hw);
131 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops));
132
133 /* limit trafffic classes based on VFs enabled */
134 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
135 (adapter->num_vfs < 16)) {
136 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
137 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
138 } else if (adapter->num_vfs < 32) {
139 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
140 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
141 } else {
142 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
143 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
144 }
145
146 /* We do not support RSS w/ SR-IOV */
147 adapter->ring_feature[RING_F_RSS].limit = 1;
148
149 /* Disable RSC when in SR-IOV mode */
150 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
151 IXGBE_FLAG2_RSC_ENABLED);
152
153 /* enable spoof checking for all VFs */
154 for (i = 0; i < adapter->num_vfs; i++)
155 adapter->vfinfo[i].spoofchk_enabled = true;
156 return;
157 }
158
159 /* Oh oh */
160 e_err(probe, "Unable to allocate memory for VF Data Storage - "
161 "SRIOV disabled\n");
162 ixgbe_disable_sriov(adapter);
163 }
164
165 static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter)
166 {
167 struct pci_dev *pdev = adapter->pdev;
168 struct pci_dev *vfdev;
169 int dev_id;
170
171 switch (adapter->hw.mac.type) {
172 case ixgbe_mac_82599EB:
173 dev_id = IXGBE_DEV_ID_82599_VF;
174 break;
175 case ixgbe_mac_X540:
176 dev_id = IXGBE_DEV_ID_X540_VF;
177 break;
178 default:
179 return false;
180 }
181
182 /* loop through all the VFs to see if we own any that are assigned */
183 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
184 while (vfdev) {
185 /* if we don't own it we don't care */
186 if (vfdev->is_virtfn && vfdev->physfn == pdev) {
187 /* if it is assigned we cannot release it */
188 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
189 return true;
190 }
191
192 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev);
193 }
194
195 return false;
196 }
197
198 #endif /* #ifdef CONFIG_PCI_IOV */
199 void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
200 {
201 struct ixgbe_hw *hw = &adapter->hw;
202 u32 gpie;
203 u32 vmdctl;
204
205 /* set num VFs to 0 to prevent access to vfinfo */
206 adapter->num_vfs = 0;
207
208 /* free VF control structures */
209 kfree(adapter->vfinfo);
210 adapter->vfinfo = NULL;
211
212 /* free macvlan list */
213 kfree(adapter->mv_list);
214 adapter->mv_list = NULL;
215
216 /* if SR-IOV is already disabled then there is nothing to do */
217 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
218 return;
219
220 #ifdef CONFIG_PCI_IOV
221 /*
222 * If our VFs are assigned we cannot shut down SR-IOV
223 * without causing issues, so just leave the hardware
224 * available but disabled
225 */
226 if (ixgbe_vfs_are_assigned(adapter)) {
227 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
228 return;
229 }
230 /* disable iov and allow time for transactions to clear */
231 pci_disable_sriov(adapter->pdev);
232 #endif
233
234 /* turn off device IOV mode */
235 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
236 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
237 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
238 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
239
240 /* set default pool back to 0 */
241 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
242 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
243 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
244 IXGBE_WRITE_FLUSH(hw);
245
246 /* Disable VMDq flag so device will be set in VM mode */
247 if (adapter->ring_feature[RING_F_VMDQ].limit == 1)
248 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
249 adapter->ring_feature[RING_F_VMDQ].offset = 0;
250
251 /* take a breather then clean up driver data */
252 msleep(100);
253
254 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
255 }
256
257 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
258 u32 *msgbuf, u32 vf)
259 {
260 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
261 >> IXGBE_VT_MSGINFO_SHIFT;
262 u16 *hash_list = (u16 *)&msgbuf[1];
263 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
264 struct ixgbe_hw *hw = &adapter->hw;
265 int i;
266 u32 vector_bit;
267 u32 vector_reg;
268 u32 mta_reg;
269
270 /* only so many hash values supported */
271 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
272
273 /*
274 * salt away the number of multi cast addresses assigned
275 * to this VF for later use to restore when the PF multi cast
276 * list changes
277 */
278 vfinfo->num_vf_mc_hashes = entries;
279
280 /*
281 * VFs are limited to using the MTA hash table for their multicast
282 * addresses
283 */
284 for (i = 0; i < entries; i++) {
285 vfinfo->vf_mc_hashes[i] = hash_list[i];
286 }
287
288 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
289 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
290 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
291 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
292 mta_reg |= (1 << vector_bit);
293 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
294 }
295
296 return 0;
297 }
298
299 static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter)
300 {
301 struct ixgbe_hw *hw = &adapter->hw;
302 struct list_head *pos;
303 struct vf_macvlans *entry;
304
305 list_for_each(pos, &adapter->vf_mvs.l) {
306 entry = list_entry(pos, struct vf_macvlans, l);
307 if (!entry->free)
308 hw->mac.ops.set_rar(hw, entry->rar_entry,
309 entry->vf_macvlan,
310 entry->vf, IXGBE_RAH_AV);
311 }
312 }
313
314 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
315 {
316 struct ixgbe_hw *hw = &adapter->hw;
317 struct vf_data_storage *vfinfo;
318 int i, j;
319 u32 vector_bit;
320 u32 vector_reg;
321 u32 mta_reg;
322
323 for (i = 0; i < adapter->num_vfs; i++) {
324 vfinfo = &adapter->vfinfo[i];
325 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
326 hw->addr_ctrl.mta_in_use++;
327 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
328 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
329 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
330 mta_reg |= (1 << vector_bit);
331 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
332 }
333 }
334
335 /* Restore any VF macvlans */
336 ixgbe_restore_vf_macvlans(adapter);
337 }
338
339 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
340 u32 vf)
341 {
342 /* VLAN 0 is a special case, don't allow it to be removed */
343 if (!vid && !add)
344 return 0;
345
346 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
347 }
348
349 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
350 {
351 struct ixgbe_hw *hw = &adapter->hw;
352 int max_frame = msgbuf[1];
353 u32 max_frs;
354
355 /*
356 * For 82599EB we have to keep all PFs and VFs operating with
357 * the same max_frame value in order to avoid sending an oversize
358 * frame to a VF. In order to guarantee this is handled correctly
359 * for all cases we have several special exceptions to take into
360 * account before we can enable the VF for receive
361 */
362 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
363 struct net_device *dev = adapter->netdev;
364 int pf_max_frame = dev->mtu + ETH_HLEN;
365 u32 reg_offset, vf_shift, vfre;
366 s32 err = 0;
367
368 #ifdef CONFIG_FCOE
369 if (dev->features & NETIF_F_FCOE_MTU)
370 pf_max_frame = max_t(int, pf_max_frame,
371 IXGBE_FCOE_JUMBO_FRAME_SIZE);
372
373 #endif /* CONFIG_FCOE */
374 switch (adapter->vfinfo[vf].vf_api) {
375 case ixgbe_mbox_api_11:
376 /*
377 * Version 1.1 supports jumbo frames on VFs if PF has
378 * jumbo frames enabled which means legacy VFs are
379 * disabled
380 */
381 if (pf_max_frame > ETH_FRAME_LEN)
382 break;
383 default:
384 /*
385 * If the PF or VF are running w/ jumbo frames enabled
386 * we need to shut down the VF Rx path as we cannot
387 * support jumbo frames on legacy VFs
388 */
389 if ((pf_max_frame > ETH_FRAME_LEN) ||
390 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
391 err = -EINVAL;
392 break;
393 }
394
395 /* determine VF receive enable location */
396 vf_shift = vf % 32;
397 reg_offset = vf / 32;
398
399 /* enable or disable receive depending on error */
400 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
401 if (err)
402 vfre &= ~(1 << vf_shift);
403 else
404 vfre |= 1 << vf_shift;
405 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
406
407 if (err) {
408 e_err(drv, "VF max_frame %d out of range\n", max_frame);
409 return err;
410 }
411 }
412
413 /* MTU < 68 is an error and causes problems on some kernels */
414 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
415 e_err(drv, "VF max_frame %d out of range\n", max_frame);
416 return -EINVAL;
417 }
418
419 /* pull current max frame size from hardware */
420 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
421 max_frs &= IXGBE_MHADD_MFS_MASK;
422 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
423
424 if (max_frs < max_frame) {
425 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
426 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
427 }
428
429 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
430
431 return 0;
432 }
433
434 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
435 {
436 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
437 vmolr |= (IXGBE_VMOLR_ROMPE |
438 IXGBE_VMOLR_BAM);
439 if (aupe)
440 vmolr |= IXGBE_VMOLR_AUPE;
441 else
442 vmolr &= ~IXGBE_VMOLR_AUPE;
443 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
444 }
445
446 static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter,
447 u16 vid, u16 qos, u32 vf)
448 {
449 struct ixgbe_hw *hw = &adapter->hw;
450 u32 vmvir = vid | (qos << VLAN_PRIO_SHIFT) | IXGBE_VMVIR_VLANA_DEFAULT;
451
452 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), vmvir);
453 }
454
455 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
456 {
457 struct ixgbe_hw *hw = &adapter->hw;
458
459 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
460 }
461 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
462 {
463 struct ixgbe_hw *hw = &adapter->hw;
464 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
465 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
466 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
467
468 /* add PF assigned VLAN or VLAN 0 */
469 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
470
471 /* reset offloads to defaults */
472 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
473
474 /* set outgoing tags for VFs */
475 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
476 ixgbe_clear_vmvir(adapter, vf);
477 } else {
478 if (vfinfo->pf_qos || !num_tcs)
479 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
480 vfinfo->pf_qos, vf);
481 else
482 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
483 adapter->default_up, vf);
484
485 if (vfinfo->spoofchk_enabled)
486 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
487 }
488
489 /* reset multicast table array for vf */
490 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
491
492 /* Flush and reset the mta with the new values */
493 ixgbe_set_rx_mode(adapter->netdev);
494
495 hw->mac.ops.clear_rar(hw, rar_entry);
496
497 /* reset VF api back to unknown */
498 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
499 }
500
501 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
502 int vf, unsigned char *mac_addr)
503 {
504 struct ixgbe_hw *hw = &adapter->hw;
505 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
506
507 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
508 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
509
510 return 0;
511 }
512
513 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
514 int vf, int index, unsigned char *mac_addr)
515 {
516 struct ixgbe_hw *hw = &adapter->hw;
517 struct list_head *pos;
518 struct vf_macvlans *entry;
519
520 if (index <= 1) {
521 list_for_each(pos, &adapter->vf_mvs.l) {
522 entry = list_entry(pos, struct vf_macvlans, l);
523 if (entry->vf == vf) {
524 entry->vf = -1;
525 entry->free = true;
526 entry->is_macvlan = false;
527 hw->mac.ops.clear_rar(hw, entry->rar_entry);
528 }
529 }
530 }
531
532 /*
533 * If index was zero then we were asked to clear the uc list
534 * for the VF. We're done.
535 */
536 if (!index)
537 return 0;
538
539 entry = NULL;
540
541 list_for_each(pos, &adapter->vf_mvs.l) {
542 entry = list_entry(pos, struct vf_macvlans, l);
543 if (entry->free)
544 break;
545 }
546
547 /*
548 * If we traversed the entire list and didn't find a free entry
549 * then we're out of space on the RAR table. Also entry may
550 * be NULL because the original memory allocation for the list
551 * failed, which is not fatal but does mean we can't support
552 * VF requests for MACVLAN because we couldn't allocate
553 * memory for the list management required.
554 */
555 if (!entry || !entry->free)
556 return -ENOSPC;
557
558 entry->free = false;
559 entry->is_macvlan = true;
560 entry->vf = vf;
561 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
562
563 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV);
564
565 return 0;
566 }
567
568 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
569 {
570 unsigned char vf_mac_addr[6];
571 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
572 unsigned int vfn = (event_mask & 0x3f);
573
574 bool enable = ((event_mask & 0x10000000U) != 0);
575
576 if (enable) {
577 eth_random_addr(vf_mac_addr);
578 e_info(probe, "IOV: VF %d is enabled MAC %pM\n",
579 vfn, vf_mac_addr);
580 /*
581 * Store away the VF "permananet" MAC address, it will ask
582 * for it later.
583 */
584 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
585 }
586
587 return 0;
588 }
589
590 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
591 {
592 struct ixgbe_hw *hw = &adapter->hw;
593 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
594 u32 reg, msgbuf[4];
595 u32 reg_offset, vf_shift;
596 u8 *addr = (u8 *)(&msgbuf[1]);
597
598 e_info(probe, "VF Reset msg received from vf %d\n", vf);
599
600 /* reset the filters for the device */
601 ixgbe_vf_reset_event(adapter, vf);
602
603 /* set vf mac address */
604 ixgbe_set_vf_mac(adapter, vf, vf_mac);
605
606 vf_shift = vf % 32;
607 reg_offset = vf / 32;
608
609 /* enable transmit for vf */
610 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
611 reg |= 1 << vf_shift;
612 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
613
614 /* enable receive for vf */
615 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
616 reg |= 1 << vf_shift;
617 /*
618 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
619 * For more info take a look at ixgbe_set_vf_lpe
620 */
621 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
622 struct net_device *dev = adapter->netdev;
623 int pf_max_frame = dev->mtu + ETH_HLEN;
624
625 #ifdef CONFIG_FCOE
626 if (dev->features & NETIF_F_FCOE_MTU)
627 pf_max_frame = max_t(int, pf_max_frame,
628 IXGBE_FCOE_JUMBO_FRAME_SIZE);
629
630 #endif /* CONFIG_FCOE */
631 if (pf_max_frame > ETH_FRAME_LEN)
632 reg &= ~(1 << vf_shift);
633 }
634 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
635
636 /* enable VF mailbox for further messages */
637 adapter->vfinfo[vf].clear_to_send = true;
638
639 /* Enable counting of spoofed packets in the SSVPC register */
640 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
641 reg |= (1 << vf_shift);
642 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
643
644 /* reply to reset with ack and vf mac address */
645 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
646 memcpy(addr, vf_mac, ETH_ALEN);
647
648 /*
649 * Piggyback the multicast filter type so VF can compute the
650 * correct vectors
651 */
652 msgbuf[3] = hw->mac.mc_filter_type;
653 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
654
655 return 0;
656 }
657
658 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
659 u32 *msgbuf, u32 vf)
660 {
661 u8 *new_mac = ((u8 *)(&msgbuf[1]));
662
663 if (!is_valid_ether_addr(new_mac)) {
664 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
665 return -1;
666 }
667
668 if (adapter->vfinfo[vf].pf_set_mac &&
669 memcmp(adapter->vfinfo[vf].vf_mac_addresses, new_mac,
670 ETH_ALEN)) {
671 e_warn(drv,
672 "VF %d attempted to override administratively set MAC address\n"
673 "Reload the VF driver to resume operations\n",
674 vf);
675 return -1;
676 }
677
678 return ixgbe_set_vf_mac(adapter, vf, new_mac);
679 }
680
681 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
682 u32 *msgbuf, u32 vf)
683 {
684 struct ixgbe_hw *hw = &adapter->hw;
685 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
686 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
687 int err;
688 u8 tcs = netdev_get_num_tc(adapter->netdev);
689
690 if (adapter->vfinfo[vf].pf_vlan || tcs) {
691 e_warn(drv,
692 "VF %d attempted to override administratively set VLAN configuration\n"
693 "Reload the VF driver to resume operations\n",
694 vf);
695 return -1;
696 }
697
698 if (add)
699 adapter->vfinfo[vf].vlan_count++;
700 else if (adapter->vfinfo[vf].vlan_count)
701 adapter->vfinfo[vf].vlan_count--;
702
703 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
704 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
705 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
706
707 return err;
708 }
709
710 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
711 u32 *msgbuf, u32 vf)
712 {
713 u8 *new_mac = ((u8 *)(&msgbuf[1]));
714 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
715 IXGBE_VT_MSGINFO_SHIFT;
716 int err;
717
718 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
719 e_warn(drv,
720 "VF %d requested MACVLAN filter but is administratively denied\n",
721 vf);
722 return -1;
723 }
724
725 /* An non-zero index indicates the VF is setting a filter */
726 if (index) {
727 if (!is_valid_ether_addr(new_mac)) {
728 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
729 return -1;
730 }
731
732 /*
733 * If the VF is allowed to set MAC filters then turn off
734 * anti-spoofing to avoid false positives.
735 */
736 if (adapter->vfinfo[vf].spoofchk_enabled)
737 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
738 }
739
740 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
741 if (err == -ENOSPC)
742 e_warn(drv,
743 "VF %d has requested a MACVLAN filter but there is no space for it\n",
744 vf);
745
746 return err < 0;
747 }
748
749 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
750 u32 *msgbuf, u32 vf)
751 {
752 int api = msgbuf[1];
753
754 switch (api) {
755 case ixgbe_mbox_api_10:
756 case ixgbe_mbox_api_11:
757 adapter->vfinfo[vf].vf_api = api;
758 return 0;
759 default:
760 break;
761 }
762
763 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
764
765 return -1;
766 }
767
768 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
769 u32 *msgbuf, u32 vf)
770 {
771 struct net_device *dev = adapter->netdev;
772 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
773 unsigned int default_tc = 0;
774 u8 num_tcs = netdev_get_num_tc(dev);
775
776 /* verify the PF is supporting the correct APIs */
777 switch (adapter->vfinfo[vf].vf_api) {
778 case ixgbe_mbox_api_20:
779 case ixgbe_mbox_api_11:
780 break;
781 default:
782 return -1;
783 }
784
785 /* only allow 1 Tx queue for bandwidth limiting */
786 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
787 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
788
789 /* if TCs > 1 determine which TC belongs to default user priority */
790 if (num_tcs > 1)
791 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
792
793 /* notify VF of need for VLAN tag stripping, and correct queue */
794 if (num_tcs)
795 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
796 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
797 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
798 else
799 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
800
801 /* notify VF of default queue */
802 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
803
804 return 0;
805 }
806
807 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
808 {
809 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
810 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
811 struct ixgbe_hw *hw = &adapter->hw;
812 s32 retval;
813
814 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
815
816 if (retval) {
817 pr_err("Error receiving message from VF\n");
818 return retval;
819 }
820
821 /* this is a message we already processed, do nothing */
822 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
823 return retval;
824
825 /* flush the ack before we write any messages back */
826 IXGBE_WRITE_FLUSH(hw);
827
828 if (msgbuf[0] == IXGBE_VF_RESET)
829 return ixgbe_vf_reset_msg(adapter, vf);
830
831 /*
832 * until the vf completes a virtual function reset it should not be
833 * allowed to start any configuration.
834 */
835 if (!adapter->vfinfo[vf].clear_to_send) {
836 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
837 ixgbe_write_mbx(hw, msgbuf, 1, vf);
838 return retval;
839 }
840
841 switch ((msgbuf[0] & 0xFFFF)) {
842 case IXGBE_VF_SET_MAC_ADDR:
843 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
844 break;
845 case IXGBE_VF_SET_MULTICAST:
846 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
847 break;
848 case IXGBE_VF_SET_VLAN:
849 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
850 break;
851 case IXGBE_VF_SET_LPE:
852 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
853 break;
854 case IXGBE_VF_SET_MACVLAN:
855 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
856 break;
857 case IXGBE_VF_API_NEGOTIATE:
858 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
859 break;
860 case IXGBE_VF_GET_QUEUES:
861 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
862 break;
863 default:
864 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
865 retval = IXGBE_ERR_MBX;
866 break;
867 }
868
869 /* notify the VF of the results of what it sent us */
870 if (retval)
871 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
872 else
873 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
874
875 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
876
877 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
878
879 return retval;
880 }
881
882 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
883 {
884 struct ixgbe_hw *hw = &adapter->hw;
885 u32 msg = IXGBE_VT_MSGTYPE_NACK;
886
887 /* if device isn't clear to send it shouldn't be reading either */
888 if (!adapter->vfinfo[vf].clear_to_send)
889 ixgbe_write_mbx(hw, &msg, 1, vf);
890 }
891
892 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
893 {
894 struct ixgbe_hw *hw = &adapter->hw;
895 u32 vf;
896
897 for (vf = 0; vf < adapter->num_vfs; vf++) {
898 /* process any reset requests */
899 if (!ixgbe_check_for_rst(hw, vf))
900 ixgbe_vf_reset_event(adapter, vf);
901
902 /* process any messages pending */
903 if (!ixgbe_check_for_msg(hw, vf))
904 ixgbe_rcv_msg_from_vf(adapter, vf);
905
906 /* process any acks */
907 if (!ixgbe_check_for_ack(hw, vf))
908 ixgbe_rcv_ack_from_vf(adapter, vf);
909 }
910 }
911
912 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
913 {
914 struct ixgbe_hw *hw = &adapter->hw;
915
916 /* disable transmit and receive for all vfs */
917 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
918 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
919
920 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
921 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
922 }
923
924 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
925 {
926 struct ixgbe_hw *hw = &adapter->hw;
927 u32 ping;
928 int i;
929
930 for (i = 0 ; i < adapter->num_vfs; i++) {
931 ping = IXGBE_PF_CONTROL_MSG;
932 if (adapter->vfinfo[i].clear_to_send)
933 ping |= IXGBE_VT_MSGTYPE_CTS;
934 ixgbe_write_mbx(hw, &ping, 1, i);
935 }
936 }
937
938 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
939 {
940 struct ixgbe_adapter *adapter = netdev_priv(netdev);
941 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
942 return -EINVAL;
943 adapter->vfinfo[vf].pf_set_mac = true;
944 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
945 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
946 " change effective.");
947 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
948 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
949 " but the PF device is not up.\n");
950 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
951 " attempting to use the VF device.\n");
952 }
953 return ixgbe_set_vf_mac(adapter, vf, mac);
954 }
955
956 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
957 {
958 int err = 0;
959 struct ixgbe_adapter *adapter = netdev_priv(netdev);
960 struct ixgbe_hw *hw = &adapter->hw;
961
962 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
963 return -EINVAL;
964 if (vlan || qos) {
965 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
966 if (err)
967 goto out;
968 ixgbe_set_vmvir(adapter, vlan, qos, vf);
969 ixgbe_set_vmolr(hw, vf, false);
970 if (adapter->vfinfo[vf].spoofchk_enabled)
971 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
972 adapter->vfinfo[vf].vlan_count++;
973 adapter->vfinfo[vf].pf_vlan = vlan;
974 adapter->vfinfo[vf].pf_qos = qos;
975 dev_info(&adapter->pdev->dev,
976 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
977 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
978 dev_warn(&adapter->pdev->dev,
979 "The VF VLAN has been set,"
980 " but the PF device is not up.\n");
981 dev_warn(&adapter->pdev->dev,
982 "Bring the PF device up before"
983 " attempting to use the VF device.\n");
984 }
985 } else {
986 err = ixgbe_set_vf_vlan(adapter, false,
987 adapter->vfinfo[vf].pf_vlan, vf);
988 ixgbe_clear_vmvir(adapter, vf);
989 ixgbe_set_vmolr(hw, vf, true);
990 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
991 if (adapter->vfinfo[vf].vlan_count)
992 adapter->vfinfo[vf].vlan_count--;
993 adapter->vfinfo[vf].pf_vlan = 0;
994 adapter->vfinfo[vf].pf_qos = 0;
995 }
996 out:
997 return err;
998 }
999
1000 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1001 {
1002 switch (adapter->link_speed) {
1003 case IXGBE_LINK_SPEED_100_FULL:
1004 return 100;
1005 case IXGBE_LINK_SPEED_1GB_FULL:
1006 return 1000;
1007 case IXGBE_LINK_SPEED_10GB_FULL:
1008 return 10000;
1009 default:
1010 return 0;
1011 }
1012 }
1013
1014 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1015 {
1016 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1017 struct ixgbe_hw *hw = &adapter->hw;
1018 u32 bcnrc_val = 0;
1019 u16 queue, queues_per_pool;
1020 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1021
1022 if (tx_rate) {
1023 /* start with base link speed value */
1024 bcnrc_val = adapter->vf_rate_link_speed;
1025
1026 /* Calculate the rate factor values to set */
1027 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1028 bcnrc_val /= tx_rate;
1029
1030 /* clear everything but the rate factor */
1031 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1032 IXGBE_RTTBCNRC_RF_DEC_MASK;
1033
1034 /* enable the rate scheduler */
1035 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1036 }
1037
1038 /*
1039 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1040 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1041 * and 0x004 otherwise.
1042 */
1043 switch (hw->mac.type) {
1044 case ixgbe_mac_82599EB:
1045 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1046 break;
1047 case ixgbe_mac_X540:
1048 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1049 break;
1050 default:
1051 break;
1052 }
1053
1054 /* determine how many queues per pool based on VMDq mask */
1055 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1056
1057 /* write value for all Tx queues belonging to VF */
1058 for (queue = 0; queue < queues_per_pool; queue++) {
1059 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1060
1061 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1062 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1063 }
1064 }
1065
1066 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1067 {
1068 int i;
1069
1070 /* VF Tx rate limit was not set */
1071 if (!adapter->vf_rate_link_speed)
1072 return;
1073
1074 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1075 adapter->vf_rate_link_speed = 0;
1076 dev_info(&adapter->pdev->dev,
1077 "Link speed has been changed. VF Transmit rate is disabled\n");
1078 }
1079
1080 for (i = 0; i < adapter->num_vfs; i++) {
1081 if (!adapter->vf_rate_link_speed)
1082 adapter->vfinfo[i].tx_rate = 0;
1083
1084 ixgbe_set_vf_rate_limit(adapter, i);
1085 }
1086 }
1087
1088 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
1089 {
1090 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1091 int link_speed;
1092
1093 /* verify VF is active */
1094 if (vf >= adapter->num_vfs)
1095 return -EINVAL;
1096
1097 /* verify link is up */
1098 if (!adapter->link_up)
1099 return -EINVAL;
1100
1101 /* verify we are linked at 10Gbps */
1102 link_speed = ixgbe_link_mbps(adapter);
1103 if (link_speed != 10000)
1104 return -EINVAL;
1105
1106 /* rate limit cannot be less than 10Mbs or greater than link speed */
1107 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed)))
1108 return -EINVAL;
1109
1110 /* store values */
1111 adapter->vf_rate_link_speed = link_speed;
1112 adapter->vfinfo[vf].tx_rate = tx_rate;
1113
1114 /* update hardware configuration */
1115 ixgbe_set_vf_rate_limit(adapter, vf);
1116
1117 return 0;
1118 }
1119
1120 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1121 {
1122 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1123 int vf_target_reg = vf >> 3;
1124 int vf_target_shift = vf % 8;
1125 struct ixgbe_hw *hw = &adapter->hw;
1126 u32 regval;
1127
1128 adapter->vfinfo[vf].spoofchk_enabled = setting;
1129
1130 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1131 regval &= ~(1 << vf_target_shift);
1132 regval |= (setting << vf_target_shift);
1133 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1134
1135 if (adapter->vfinfo[vf].vlan_count) {
1136 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1137 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1138 regval &= ~(1 << vf_target_shift);
1139 regval |= (setting << vf_target_shift);
1140 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1141 }
1142
1143 return 0;
1144 }
1145
1146 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1147 int vf, struct ifla_vf_info *ivi)
1148 {
1149 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1150 if (vf >= adapter->num_vfs)
1151 return -EINVAL;
1152 ivi->vf = vf;
1153 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1154 ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
1155 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1156 ivi->qos = adapter->vfinfo[vf].pf_qos;
1157 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1158 return 0;
1159 }
CJK support for tty framebuffer vt