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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#ifdef NETIF_F_HW_VLAN_CTAG_TX
40#include <linux/if_vlan.h>
41#endif
42
43#include "ixgbe.h"
44#include "ixgbe_type.h"
45#include "ixgbe_sriov.h"
46
47#ifdef CONFIG_PCI_IOV
48static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
49{
50 struct ixgbe_hw *hw = &adapter->hw;
51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
53
54 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
55 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
56
57
58 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
59 if (!adapter->ring_feature[RING_F_VMDQ].limit)
60 adapter->ring_feature[RING_F_VMDQ].limit = 1;
61 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
62
63 num_vf_macvlans = hw->mac.num_rar_entries -
64 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
65
66 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
67 sizeof(struct vf_macvlans),
68 GFP_KERNEL);
69 if (mv_list) {
70
71 INIT_LIST_HEAD(&adapter->vf_mvs.l);
72 for (i = 0; i < num_vf_macvlans; i++) {
73 mv_list->vf = -1;
74 mv_list->free = true;
75 list_add(&mv_list->l, &adapter->vf_mvs.l);
76 mv_list++;
77 }
78 }
79
80
81 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
82 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
83
84
85
86
87 adapter->vfinfo =
88 kcalloc(adapter->num_vfs,
89 sizeof(struct vf_data_storage), GFP_KERNEL);
90 if (adapter->vfinfo) {
91
92 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
93 (adapter->num_vfs < 16)) {
94 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
95 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
96 } else if (adapter->num_vfs < 32) {
97 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
98 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
99 } else {
100 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
101 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
102 }
103
104
105 adapter->ring_feature[RING_F_RSS].limit = 1;
106
107
108 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
109 IXGBE_FLAG2_RSC_ENABLED);
110
111
112 for (i = 0; i < adapter->num_vfs; i++)
113 adapter->vfinfo[i].spoofchk_enabled = true;
114 return 0;
115 }
116
117 return -ENOMEM;
118}
119
120
121
122
123void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
124{
125 int pre_existing_vfs = 0;
126
127 pre_existing_vfs = pci_num_vf(adapter->pdev);
128 if (!pre_existing_vfs && !adapter->num_vfs)
129 return;
130
131
132
133
134
135
136
137 if (pre_existing_vfs) {
138 adapter->num_vfs = pre_existing_vfs;
139 dev_warn(&adapter->pdev->dev,
140 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
141 } else {
142 int err;
143
144
145
146
147
148
149
150 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
151
152 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
153 if (err) {
154 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
155 adapter->num_vfs = 0;
156 return;
157 }
158 }
159
160 if (!__ixgbe_enable_sriov(adapter))
161 return;
162
163
164
165
166 e_err(probe, "Unable to allocate memory for VF Data Storage - "
167 "SRIOV disabled\n");
168 ixgbe_disable_sriov(adapter);
169}
170
171#endif
172int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
173{
174 struct ixgbe_hw *hw = &adapter->hw;
175 u32 gpie;
176 u32 vmdctl;
177 int rss;
178
179
180 adapter->num_vfs = 0;
181
182
183 kfree(adapter->vfinfo);
184 adapter->vfinfo = NULL;
185
186
187 kfree(adapter->mv_list);
188 adapter->mv_list = NULL;
189
190
191 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
192 return 0;
193
194#ifdef CONFIG_PCI_IOV
195
196
197
198
199
200 if (pci_vfs_assigned(adapter->pdev)) {
201 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
202 return -EPERM;
203 }
204
205 pci_disable_sriov(adapter->pdev);
206#endif
207
208
209 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
210 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
211 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
212 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
213
214
215 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
216 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
217 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
218 IXGBE_WRITE_FLUSH(hw);
219
220
221 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
222 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
223 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
224 rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
225 } else {
226 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
227 }
228
229 adapter->ring_feature[RING_F_VMDQ].offset = 0;
230 adapter->ring_feature[RING_F_RSS].limit = rss;
231
232
233 msleep(100);
234 return 0;
235}
236
237static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
238{
239#ifdef CONFIG_PCI_IOV
240 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
241 int err = 0;
242 int i;
243 int pre_existing_vfs = pci_num_vf(dev);
244
245 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
246 err = ixgbe_disable_sriov(adapter);
247 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
248 return num_vfs;
249
250 if (err)
251 return err;
252
253
254
255
256
257
258
259 if (num_vfs > IXGBE_MAX_VFS_DRV_LIMIT)
260 return -EPERM;
261
262 adapter->num_vfs = num_vfs;
263
264 err = __ixgbe_enable_sriov(adapter);
265 if (err)
266 return err;
267
268 for (i = 0; i < adapter->num_vfs; i++)
269 ixgbe_vf_configuration(dev, (i | 0x10000000));
270
271 err = pci_enable_sriov(dev, num_vfs);
272 if (err) {
273 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
274 return err;
275 }
276 ixgbe_sriov_reinit(adapter);
277
278 return num_vfs;
279#else
280 return 0;
281#endif
282}
283
284static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
285{
286 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
287 int err;
288#ifdef CONFIG_PCI_IOV
289 u32 current_flags = adapter->flags;
290#endif
291
292 err = ixgbe_disable_sriov(adapter);
293
294
295#ifdef CONFIG_PCI_IOV
296 if (!err && current_flags != adapter->flags)
297 ixgbe_sriov_reinit(adapter);
298#endif
299
300 return err;
301}
302
303int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
304{
305 if (num_vfs == 0)
306 return ixgbe_pci_sriov_disable(dev);
307 else
308 return ixgbe_pci_sriov_enable(dev, num_vfs);
309}
310
311static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
312 u32 *msgbuf, u32 vf)
313{
314 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
315 >> IXGBE_VT_MSGINFO_SHIFT;
316 u16 *hash_list = (u16 *)&msgbuf[1];
317 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
318 struct ixgbe_hw *hw = &adapter->hw;
319 int i;
320 u32 vector_bit;
321 u32 vector_reg;
322 u32 mta_reg;
323 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
324
325
326 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
327
328
329
330
331
332
333 vfinfo->num_vf_mc_hashes = entries;
334
335
336
337
338
339 for (i = 0; i < entries; i++) {
340 vfinfo->vf_mc_hashes[i] = hash_list[i];
341 }
342
343 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
344 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
345 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
346 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
347 mta_reg |= (1 << vector_bit);
348 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
349 }
350 vmolr |= IXGBE_VMOLR_ROMPE;
351 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
352
353 return 0;
354}
355
356#ifdef CONFIG_PCI_IOV
357void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
358{
359 struct ixgbe_hw *hw = &adapter->hw;
360 struct vf_data_storage *vfinfo;
361 int i, j;
362 u32 vector_bit;
363 u32 vector_reg;
364 u32 mta_reg;
365
366 for (i = 0; i < adapter->num_vfs; i++) {
367 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
368 vfinfo = &adapter->vfinfo[i];
369 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
370 hw->addr_ctrl.mta_in_use++;
371 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
372 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
373 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
374 mta_reg |= (1 << vector_bit);
375 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
376 }
377
378 if (vfinfo->num_vf_mc_hashes)
379 vmolr |= IXGBE_VMOLR_ROMPE;
380 else
381 vmolr &= ~IXGBE_VMOLR_ROMPE;
382 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
383 }
384
385
386 ixgbe_full_sync_mac_table(adapter);
387}
388#endif
389
390static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
391 u32 vf)
392{
393
394 if (!vid && !add)
395 return 0;
396
397 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
398}
399
400static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
401{
402 struct ixgbe_hw *hw = &adapter->hw;
403 int max_frame = msgbuf[1];
404 u32 max_frs;
405
406
407
408
409
410
411
412
413 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
414 struct net_device *dev = adapter->netdev;
415 int pf_max_frame = dev->mtu + ETH_HLEN;
416 u32 reg_offset, vf_shift, vfre;
417 s32 err = 0;
418
419#ifdef CONFIG_FCOE
420 if (dev->features & NETIF_F_FCOE_MTU)
421 pf_max_frame = max_t(int, pf_max_frame,
422 IXGBE_FCOE_JUMBO_FRAME_SIZE);
423
424#endif
425 switch (adapter->vfinfo[vf].vf_api) {
426 case ixgbe_mbox_api_11:
427
428
429
430
431
432 if (pf_max_frame > ETH_FRAME_LEN)
433 break;
434 default:
435
436
437
438
439
440 if ((pf_max_frame > ETH_FRAME_LEN) ||
441 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
442 err = -EINVAL;
443 break;
444 }
445
446
447 vf_shift = vf % 32;
448 reg_offset = vf / 32;
449
450
451 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
452 if (err)
453 vfre &= ~(1 << vf_shift);
454 else
455 vfre |= 1 << vf_shift;
456 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
457
458 if (err) {
459 e_err(drv, "VF max_frame %d out of range\n", max_frame);
460 return err;
461 }
462 }
463
464
465 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
466 e_err(drv, "VF max_frame %d out of range\n", max_frame);
467 return -EINVAL;
468 }
469
470
471 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
472 max_frs &= IXGBE_MHADD_MFS_MASK;
473 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
474
475 if (max_frs < max_frame) {
476 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
477 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
478 }
479
480 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
481
482 return 0;
483}
484
485static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
486{
487 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
488 vmolr |= IXGBE_VMOLR_BAM;
489 if (aupe)
490 vmolr |= IXGBE_VMOLR_AUPE;
491 else
492 vmolr &= ~IXGBE_VMOLR_AUPE;
493 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
494}
495
496static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
497{
498 struct ixgbe_hw *hw = &adapter->hw;
499
500 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
501}
502static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
503{
504 struct ixgbe_hw *hw = &adapter->hw;
505 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
506 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
507
508
509 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
510
511
512 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
513
514
515 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
516 ixgbe_clear_vmvir(adapter, vf);
517 } else {
518 if (vfinfo->pf_qos || !num_tcs)
519 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
520 vfinfo->pf_qos, vf);
521 else
522 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
523 adapter->default_up, vf);
524
525 if (vfinfo->spoofchk_enabled)
526 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
527 }
528
529
530 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
531
532
533 ixgbe_set_rx_mode(adapter->netdev);
534
535 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
536
537
538 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
539}
540
541static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
542 int vf, unsigned char *mac_addr)
543{
544 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
545 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
546 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
547
548 return 0;
549}
550
551static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
552 int vf, int index, unsigned char *mac_addr)
553{
554 struct list_head *pos;
555 struct vf_macvlans *entry;
556
557 if (index <= 1) {
558 list_for_each(pos, &adapter->vf_mvs.l) {
559 entry = list_entry(pos, struct vf_macvlans, l);
560 if (entry->vf == vf) {
561 entry->vf = -1;
562 entry->free = true;
563 entry->is_macvlan = false;
564 ixgbe_del_mac_filter(adapter,
565 entry->vf_macvlan, vf);
566 }
567 }
568 }
569
570
571
572
573
574 if (!index)
575 return 0;
576
577 entry = NULL;
578
579 list_for_each(pos, &adapter->vf_mvs.l) {
580 entry = list_entry(pos, struct vf_macvlans, l);
581 if (entry->free)
582 break;
583 }
584
585
586
587
588
589
590
591
592
593 if (!entry || !entry->free)
594 return -ENOSPC;
595
596 entry->free = false;
597 entry->is_macvlan = true;
598 entry->vf = vf;
599 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
600
601 ixgbe_add_mac_filter(adapter, mac_addr, vf);
602
603 return 0;
604}
605
606int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
607{
608 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
609 unsigned int vfn = (event_mask & 0x3f);
610
611 bool enable = ((event_mask & 0x10000000U) != 0);
612
613 if (enable)
614 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
615
616 return 0;
617}
618
619static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
620{
621 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
622 struct ixgbe_hw *hw = &adapter->hw;
623 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
624 u32 reg, reg_offset, vf_shift;
625 u32 msgbuf[4] = {0, 0, 0, 0};
626 u8 *addr = (u8 *)(&msgbuf[1]);
627 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
628 int i;
629
630 e_info(probe, "VF Reset msg received from vf %d\n", vf);
631
632
633 ixgbe_vf_reset_event(adapter, vf);
634
635
636 if (!is_zero_ether_addr(vf_mac))
637 ixgbe_set_vf_mac(adapter, vf, vf_mac);
638
639 vf_shift = vf % 32;
640 reg_offset = vf / 32;
641
642
643 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
644 reg |= 1 << vf_shift;
645 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
646
647
648 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
649
650 IXGBE_WRITE_FLUSH(hw);
651
652
653 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
654 reg |= i << IXGBE_QDE_IDX_SHIFT;
655 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
656 }
657
658
659 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
660 reg |= 1 << vf_shift;
661
662
663
664
665 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
666 struct net_device *dev = adapter->netdev;
667 int pf_max_frame = dev->mtu + ETH_HLEN;
668
669#ifdef CONFIG_FCOE
670 if (dev->features & NETIF_F_FCOE_MTU)
671 pf_max_frame = max_t(int, pf_max_frame,
672 IXGBE_FCOE_JUMBO_FRAME_SIZE);
673
674#endif
675 if (pf_max_frame > ETH_FRAME_LEN)
676 reg &= ~(1 << vf_shift);
677 }
678 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
679
680
681 adapter->vfinfo[vf].clear_to_send = true;
682
683
684 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
685 reg |= (1 << vf_shift);
686 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
687
688
689
690
691
692 for (i = 0; i < q_per_pool; i++) {
693 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
694 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
695 }
696
697
698 msgbuf[0] = IXGBE_VF_RESET;
699 if (!is_zero_ether_addr(vf_mac)) {
700 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
701 memcpy(addr, vf_mac, ETH_ALEN);
702 } else {
703 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
704 dev_warn(&adapter->pdev->dev,
705 "VF %d has no MAC address assigned, you may have to assign one manually\n",
706 vf);
707 }
708
709
710
711
712
713 msgbuf[3] = hw->mac.mc_filter_type;
714 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
715
716 return 0;
717}
718
719static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
720 u32 *msgbuf, u32 vf)
721{
722 u8 *new_mac = ((u8 *)(&msgbuf[1]));
723
724 if (!is_valid_ether_addr(new_mac)) {
725 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
726 return -1;
727 }
728
729 if (adapter->vfinfo[vf].pf_set_mac &&
730 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
731 e_warn(drv,
732 "VF %d attempted to override administratively set MAC address\n"
733 "Reload the VF driver to resume operations\n",
734 vf);
735 return -1;
736 }
737
738 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
739}
740
741static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
742{
743 u32 vlvf;
744 s32 regindex;
745
746
747 if (vlan == 0)
748 return 0;
749
750
751 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
752 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
753 if ((vlvf & VLAN_VID_MASK) == vlan)
754 break;
755 }
756
757
758 if (regindex >= IXGBE_VLVF_ENTRIES)
759 regindex = -1;
760
761 return regindex;
762}
763
764static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
765 u32 *msgbuf, u32 vf)
766{
767 struct ixgbe_hw *hw = &adapter->hw;
768 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
769 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
770 int err;
771 s32 reg_ndx;
772 u32 vlvf;
773 u32 bits;
774 u8 tcs = netdev_get_num_tc(adapter->netdev);
775
776 if (adapter->vfinfo[vf].pf_vlan || tcs) {
777 e_warn(drv,
778 "VF %d attempted to override administratively set VLAN configuration\n"
779 "Reload the VF driver to resume operations\n",
780 vf);
781 return -1;
782 }
783
784 if (add)
785 adapter->vfinfo[vf].vlan_count++;
786 else if (adapter->vfinfo[vf].vlan_count)
787 adapter->vfinfo[vf].vlan_count--;
788
789
790
791
792 if (add && adapter->netdev->flags & IFF_PROMISC)
793 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
794
795 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
796 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
797 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
798
799
800
801
802 if (!add && adapter->netdev->flags & IFF_PROMISC) {
803 reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
804 if (reg_ndx < 0)
805 return err;
806 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
807
808
809
810 if (VMDQ_P(0) < 32) {
811 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
812 bits &= ~(1 << VMDQ_P(0));
813 bits |= IXGBE_READ_REG(hw,
814 IXGBE_VLVFB(reg_ndx * 2) + 1);
815 } else {
816 bits = IXGBE_READ_REG(hw,
817 IXGBE_VLVFB(reg_ndx * 2) + 1);
818 bits &= ~(1 << (VMDQ_P(0) - 32));
819 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
820 }
821
822
823
824
825
826 if ((vlvf & VLAN_VID_MASK) == vid &&
827 !test_bit(vid, adapter->active_vlans) && !bits)
828 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
829 }
830
831 return err;
832}
833
834static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
835 u32 *msgbuf, u32 vf)
836{
837 u8 *new_mac = ((u8 *)(&msgbuf[1]));
838 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
839 IXGBE_VT_MSGINFO_SHIFT;
840 int err;
841
842 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
843 e_warn(drv,
844 "VF %d requested MACVLAN filter but is administratively denied\n",
845 vf);
846 return -1;
847 }
848
849
850 if (index) {
851 if (!is_valid_ether_addr(new_mac)) {
852 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
853 return -1;
854 }
855
856
857
858
859
860 if (adapter->vfinfo[vf].spoofchk_enabled)
861 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
862 }
863
864 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
865 if (err == -ENOSPC)
866 e_warn(drv,
867 "VF %d has requested a MACVLAN filter but there is no space for it\n",
868 vf);
869
870 return err < 0;
871}
872
873static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
874 u32 *msgbuf, u32 vf)
875{
876 int api = msgbuf[1];
877
878 switch (api) {
879 case ixgbe_mbox_api_10:
880 case ixgbe_mbox_api_11:
881 adapter->vfinfo[vf].vf_api = api;
882 return 0;
883 default:
884 break;
885 }
886
887 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
888
889 return -1;
890}
891
892static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
893 u32 *msgbuf, u32 vf)
894{
895 struct net_device *dev = adapter->netdev;
896 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
897 unsigned int default_tc = 0;
898 u8 num_tcs = netdev_get_num_tc(dev);
899
900
901 switch (adapter->vfinfo[vf].vf_api) {
902 case ixgbe_mbox_api_20:
903 case ixgbe_mbox_api_11:
904 break;
905 default:
906 return -1;
907 }
908
909
910 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
911 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
912
913
914 if (num_tcs > 1)
915 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
916
917
918 if (num_tcs)
919 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
920 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
921 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
922 else
923 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
924
925
926 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
927
928 return 0;
929}
930
931static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
932{
933 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
934 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
935 struct ixgbe_hw *hw = &adapter->hw;
936 s32 retval;
937
938 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
939
940 if (retval) {
941 pr_err("Error receiving message from VF\n");
942 return retval;
943 }
944
945
946 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
947 return 0;
948
949
950 IXGBE_WRITE_FLUSH(hw);
951
952 if (msgbuf[0] == IXGBE_VF_RESET)
953 return ixgbe_vf_reset_msg(adapter, vf);
954
955
956
957
958
959 if (!adapter->vfinfo[vf].clear_to_send) {
960 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
961 ixgbe_write_mbx(hw, msgbuf, 1, vf);
962 return 0;
963 }
964
965 switch ((msgbuf[0] & 0xFFFF)) {
966 case IXGBE_VF_SET_MAC_ADDR:
967 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
968 break;
969 case IXGBE_VF_SET_MULTICAST:
970 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
971 break;
972 case IXGBE_VF_SET_VLAN:
973 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
974 break;
975 case IXGBE_VF_SET_LPE:
976 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
977 break;
978 case IXGBE_VF_SET_MACVLAN:
979 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
980 break;
981 case IXGBE_VF_API_NEGOTIATE:
982 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
983 break;
984 case IXGBE_VF_GET_QUEUES:
985 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
986 break;
987 default:
988 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
989 retval = IXGBE_ERR_MBX;
990 break;
991 }
992
993
994 if (retval)
995 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
996 else
997 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
998
999 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1000
1001 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1002
1003 return retval;
1004}
1005
1006static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1007{
1008 struct ixgbe_hw *hw = &adapter->hw;
1009 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1010
1011
1012 if (!adapter->vfinfo[vf].clear_to_send)
1013 ixgbe_write_mbx(hw, &msg, 1, vf);
1014}
1015
1016void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1017{
1018 struct ixgbe_hw *hw = &adapter->hw;
1019 u32 vf;
1020
1021 for (vf = 0; vf < adapter->num_vfs; vf++) {
1022
1023 if (!ixgbe_check_for_rst(hw, vf))
1024 ixgbe_vf_reset_event(adapter, vf);
1025
1026
1027 if (!ixgbe_check_for_msg(hw, vf))
1028 ixgbe_rcv_msg_from_vf(adapter, vf);
1029
1030
1031 if (!ixgbe_check_for_ack(hw, vf))
1032 ixgbe_rcv_ack_from_vf(adapter, vf);
1033 }
1034}
1035
1036void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1037{
1038 struct ixgbe_hw *hw = &adapter->hw;
1039
1040
1041 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1042 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1043
1044 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1045 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1046}
1047
1048void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1049{
1050 struct ixgbe_hw *hw = &adapter->hw;
1051 u32 ping;
1052 int i;
1053
1054 for (i = 0 ; i < adapter->num_vfs; i++) {
1055 ping = IXGBE_PF_CONTROL_MSG;
1056 if (adapter->vfinfo[i].clear_to_send)
1057 ping |= IXGBE_VT_MSGTYPE_CTS;
1058 ixgbe_write_mbx(hw, &ping, 1, i);
1059 }
1060}
1061
1062int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1063{
1064 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1065 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1066 return -EINVAL;
1067 adapter->vfinfo[vf].pf_set_mac = true;
1068 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1069 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1070 " change effective.");
1071 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1072 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1073 " but the PF device is not up.\n");
1074 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1075 " attempting to use the VF device.\n");
1076 }
1077 return ixgbe_set_vf_mac(adapter, vf, mac);
1078}
1079
1080int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1081{
1082 int err = 0;
1083 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1084 struct ixgbe_hw *hw = &adapter->hw;
1085
1086 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1087 return -EINVAL;
1088 if (vlan || qos) {
1089 if (adapter->vfinfo[vf].pf_vlan)
1090 err = ixgbe_set_vf_vlan(adapter, false,
1091 adapter->vfinfo[vf].pf_vlan,
1092 vf);
1093 if (err)
1094 goto out;
1095 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1096 if (err)
1097 goto out;
1098 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1099 ixgbe_set_vmolr(hw, vf, false);
1100 if (adapter->vfinfo[vf].spoofchk_enabled)
1101 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1102 adapter->vfinfo[vf].vlan_count++;
1103 adapter->vfinfo[vf].pf_vlan = vlan;
1104 adapter->vfinfo[vf].pf_qos = qos;
1105 dev_info(&adapter->pdev->dev,
1106 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1107 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1108 dev_warn(&adapter->pdev->dev,
1109 "The VF VLAN has been set,"
1110 " but the PF device is not up.\n");
1111 dev_warn(&adapter->pdev->dev,
1112 "Bring the PF device up before"
1113 " attempting to use the VF device.\n");
1114 }
1115 } else {
1116 err = ixgbe_set_vf_vlan(adapter, false,
1117 adapter->vfinfo[vf].pf_vlan, vf);
1118 ixgbe_clear_vmvir(adapter, vf);
1119 ixgbe_set_vmolr(hw, vf, true);
1120 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1121 if (adapter->vfinfo[vf].vlan_count)
1122 adapter->vfinfo[vf].vlan_count--;
1123 adapter->vfinfo[vf].pf_vlan = 0;
1124 adapter->vfinfo[vf].pf_qos = 0;
1125 }
1126out:
1127 return err;
1128}
1129
1130static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1131{
1132 switch (adapter->link_speed) {
1133 case IXGBE_LINK_SPEED_100_FULL:
1134 return 100;
1135 case IXGBE_LINK_SPEED_1GB_FULL:
1136 return 1000;
1137 case IXGBE_LINK_SPEED_10GB_FULL:
1138 return 10000;
1139 default:
1140 return 0;
1141 }
1142}
1143
1144static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1145{
1146 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1147 struct ixgbe_hw *hw = &adapter->hw;
1148 u32 bcnrc_val = 0;
1149 u16 queue, queues_per_pool;
1150 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1151
1152 if (tx_rate) {
1153
1154 bcnrc_val = adapter->vf_rate_link_speed;
1155
1156
1157 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1158 bcnrc_val /= tx_rate;
1159
1160
1161 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1162 IXGBE_RTTBCNRC_RF_DEC_MASK;
1163
1164
1165 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1166 }
1167
1168
1169
1170
1171
1172
1173 switch (hw->mac.type) {
1174 case ixgbe_mac_82599EB:
1175 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1176 break;
1177 case ixgbe_mac_X540:
1178 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1179 break;
1180 default:
1181 break;
1182 }
1183
1184
1185 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1186
1187
1188 for (queue = 0; queue < queues_per_pool; queue++) {
1189 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1190
1191 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1192 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1193 }
1194}
1195
1196void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1197{
1198 int i;
1199
1200
1201 if (!adapter->vf_rate_link_speed)
1202 return;
1203
1204 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1205 adapter->vf_rate_link_speed = 0;
1206 dev_info(&adapter->pdev->dev,
1207 "Link speed has been changed. VF Transmit rate is disabled\n");
1208 }
1209
1210 for (i = 0; i < adapter->num_vfs; i++) {
1211 if (!adapter->vf_rate_link_speed)
1212 adapter->vfinfo[i].tx_rate = 0;
1213
1214 ixgbe_set_vf_rate_limit(adapter, i);
1215 }
1216}
1217
1218int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1219 int max_tx_rate)
1220{
1221 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1222 int link_speed;
1223
1224
1225 if (vf >= adapter->num_vfs)
1226 return -EINVAL;
1227
1228
1229 if (!adapter->link_up)
1230 return -EINVAL;
1231
1232
1233 link_speed = ixgbe_link_mbps(adapter);
1234 if (link_speed != 10000)
1235 return -EINVAL;
1236
1237 if (min_tx_rate)
1238 return -EINVAL;
1239
1240
1241 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1242 return -EINVAL;
1243
1244
1245 adapter->vf_rate_link_speed = link_speed;
1246 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1247
1248
1249 ixgbe_set_vf_rate_limit(adapter, vf);
1250
1251 return 0;
1252}
1253
1254int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1255{
1256 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1257 int vf_target_reg = vf >> 3;
1258 int vf_target_shift = vf % 8;
1259 struct ixgbe_hw *hw = &adapter->hw;
1260 u32 regval;
1261
1262 adapter->vfinfo[vf].spoofchk_enabled = setting;
1263
1264 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1265 regval &= ~(1 << vf_target_shift);
1266 regval |= (setting << vf_target_shift);
1267 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1268
1269 if (adapter->vfinfo[vf].vlan_count) {
1270 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1271 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1272 regval &= ~(1 << vf_target_shift);
1273 regval |= (setting << vf_target_shift);
1274 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1275 }
1276
1277 return 0;
1278}
1279
1280int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1281 int vf, struct ifla_vf_info *ivi)
1282{
1283 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1284 if (vf >= adapter->num_vfs)
1285 return -EINVAL;
1286 ivi->vf = vf;
1287 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1288 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1289 ivi->min_tx_rate = 0;
1290 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1291 ivi->qos = adapter->vfinfo[vf].pf_qos;
1292 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1293 return 0;
1294}
1295