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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4#include <linux/types.h>
5#include <linux/module.h>
6#include <linux/pci.h>
7#include <linux/netdevice.h>
8#include <linux/vmalloc.h>
9#include <linux/string.h>
10#include <linux/in.h>
11#include <linux/ip.h>
12#include <linux/tcp.h>
13#include <linux/ipv6.h>
14#include <linux/if_bridge.h>
15#ifdef NETIF_F_HW_VLAN_CTAG_TX
16#include <linux/if_vlan.h>
17#endif
18
19#include "ixgbe.h"
20#include "ixgbe_type.h"
21#include "ixgbe_sriov.h"
22
23#ifdef CONFIG_PCI_IOV
24static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,
25 unsigned int num_vfs)
26{
27 struct ixgbe_hw *hw = &adapter->hw;
28 struct vf_macvlans *mv_list;
29 int num_vf_macvlans, i;
30
31 /* Initialize list of VF macvlans */
32 INIT_LIST_HEAD(&adapter->vf_mvs.l);
33
34 num_vf_macvlans = hw->mac.num_rar_entries -
35 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
36 if (!num_vf_macvlans)
37 return;
38
39 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
40 GFP_KERNEL);
41 if (mv_list) {
42 for (i = 0; i < num_vf_macvlans; i++) {
43 mv_list[i].vf = -1;
44 mv_list[i].free = true;
45 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
46 }
47 adapter->mv_list = mv_list;
48 }
49}
50
51static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
52 unsigned int num_vfs)
53{
54 struct ixgbe_hw *hw = &adapter->hw;
55 int i;
56
57 if (adapter->xdp_prog) {
58 e_warn(probe, "SRIOV is not supported with XDP\n");
59 return -EINVAL;
60 }
61
62 /* Enable VMDq flag so device will be set in VM mode */
63 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
64 IXGBE_FLAG_VMDQ_ENABLED;
65
66 /* Allocate memory for per VF control structures */
67 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
68 GFP_KERNEL);
69 if (!adapter->vfinfo)
70 return -ENOMEM;
71
72 adapter->num_vfs = num_vfs;
73
74 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
75 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
76
77 /* Initialize default switching mode VEB */
78 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
79 adapter->bridge_mode = BRIDGE_MODE_VEB;
80
81 /* limit traffic classes based on VFs enabled */
82 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
83 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
84 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
85 } else if (num_vfs < 32) {
86 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
87 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
88 } else {
89 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
90 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
91 }
92
93 /* Disable RSC when in SR-IOV mode */
94 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
95 IXGBE_FLAG2_RSC_ENABLED);
96
97 for (i = 0; i < num_vfs; i++) {
98 /* enable spoof checking for all VFs */
99 adapter->vfinfo[i].spoofchk_enabled = true;
100 adapter->vfinfo[i].link_enable = true;
101
102 /* We support VF RSS querying only for 82599 and x540
103 * devices at the moment. These devices share RSS
104 * indirection table and RSS hash key with PF therefore
105 * we want to disable the querying by default.
106 */
107 adapter->vfinfo[i].rss_query_enabled = false;
108
109 /* Untrust all VFs */
110 adapter->vfinfo[i].trusted = false;
111
112 /* set the default xcast mode */
113 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
114 }
115
116 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
117 return 0;
118}
119
120/**
121 * ixgbe_get_vfs - Find and take references to all vf devices
122 * @adapter: Pointer to adapter struct
123 */
124static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
125{
126 struct pci_dev *pdev = adapter->pdev;
127 u16 vendor = pdev->vendor;
128 struct pci_dev *vfdev;
129 int vf = 0;
130 u16 vf_id;
131 int pos;
132
133 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
134 if (!pos)
135 return;
136 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
137
138 vfdev = pci_get_device(vendor, vf_id, NULL);
139 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
140 if (!vfdev->is_virtfn)
141 continue;
142 if (vfdev->physfn != pdev)
143 continue;
144 if (vf >= adapter->num_vfs)
145 continue;
146 pci_dev_get(vfdev);
147 adapter->vfinfo[vf].vfdev = vfdev;
148 ++vf;
149 }
150}
151
152/* Note this function is called when the user wants to enable SR-IOV
153 * VFs using the now deprecated module parameter
154 */
155void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
156{
157 int pre_existing_vfs = 0;
158 unsigned int num_vfs;
159
160 pre_existing_vfs = pci_num_vf(adapter->pdev);
161 if (!pre_existing_vfs && !max_vfs)
162 return;
163
164 /* If there are pre-existing VFs then we have to force
165 * use of that many - over ride any module parameter value.
166 * This may result from the user unloading the PF driver
167 * while VFs were assigned to guest VMs or because the VFs
168 * have been created via the new PCI SR-IOV sysfs interface.
169 */
170 if (pre_existing_vfs) {
171 num_vfs = pre_existing_vfs;
172 dev_warn(&adapter->pdev->dev,
173 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
174 } else {
175 int err;
176 /*
177 * The 82599 supports up to 64 VFs per physical function
178 * but this implementation limits allocation to 63 so that
179 * basic networking resources are still available to the
180 * physical function. If the user requests greater than
181 * 63 VFs then it is an error - reset to default of zero.
182 */
183 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
184
185 err = pci_enable_sriov(adapter->pdev, num_vfs);
186 if (err) {
187 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
188 return;
189 }
190 }
191
192 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
193 ixgbe_get_vfs(adapter);
194 return;
195 }
196
197 /* If we have gotten to this point then there is no memory available
198 * to manage the VF devices - print message and bail.
199 */
200 e_err(probe, "Unable to allocate memory for VF Data Storage - "
201 "SRIOV disabled\n");
202 ixgbe_disable_sriov(adapter);
203}
204
205#endif /* #ifdef CONFIG_PCI_IOV */
206int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
207{
208 unsigned int num_vfs = adapter->num_vfs, vf;
209 unsigned long flags;
210 int rss;
211
212 spin_lock_irqsave(&adapter->vfs_lock, flags);
213 /* set num VFs to 0 to prevent access to vfinfo */
214 adapter->num_vfs = 0;
215 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
216
217 /* put the reference to all of the vf devices */
218 for (vf = 0; vf < num_vfs; ++vf) {
219 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
220
221 if (!vfdev)
222 continue;
223 adapter->vfinfo[vf].vfdev = NULL;
224 pci_dev_put(vfdev);
225 }
226
227 /* free VF control structures */
228 kfree(adapter->vfinfo);
229 adapter->vfinfo = NULL;
230
231 /* free macvlan list */
232 kfree(adapter->mv_list);
233 adapter->mv_list = NULL;
234
235 /* if SR-IOV is already disabled then there is nothing to do */
236 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
237 return 0;
238
239#ifdef CONFIG_PCI_IOV
240 /*
241 * If our VFs are assigned we cannot shut down SR-IOV
242 * without causing issues, so just leave the hardware
243 * available but disabled
244 */
245 if (pci_vfs_assigned(adapter->pdev)) {
246 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
247 return -EPERM;
248 }
249 /* disable iov and allow time for transactions to clear */
250 pci_disable_sriov(adapter->pdev);
251#endif
252
253 /* Disable VMDq flag so device will be set in VM mode */
254 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
255 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
256 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
257 rss = min_t(int, ixgbe_max_rss_indices(adapter),
258 num_online_cpus());
259 } else {
260 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
261 }
262
263 adapter->ring_feature[RING_F_VMDQ].offset = 0;
264 adapter->ring_feature[RING_F_RSS].limit = rss;
265
266 /* take a breather then clean up driver data */
267 msleep(100);
268 return 0;
269}
270
271static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
272{
273#ifdef CONFIG_PCI_IOV
274 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
275 int pre_existing_vfs = pci_num_vf(dev);
276 int err = 0, num_rx_pools, i, limit;
277 u8 num_tc;
278
279 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
280 err = ixgbe_disable_sriov(adapter);
281 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
282 return num_vfs;
283
284 if (err)
285 return err;
286
287 /* While the SR-IOV capability structure reports total VFs to be 64,
288 * we limit the actual number allocated as below based on two factors.
289 * Num_TCs MAX_VFs
290 * 1 63
291 * <=4 31
292 * >4 15
293 * First, we reserve some transmit/receive resources for the PF.
294 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
295 * account for this, so that we don't accidentally allocate more VFs
296 * than we have available pools. The PCI bus driver already checks for
297 * other values out of range.
298 */
299 num_tc = adapter->hw_tcs;
300 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
301 adapter->num_rx_pools);
302 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
303 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
304
305 if (num_vfs > (limit - num_rx_pools)) {
306 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
307 num_tc, num_rx_pools - 1, limit - num_rx_pools);
308 return -EPERM;
309 }
310
311 err = __ixgbe_enable_sriov(adapter, num_vfs);
312 if (err)
313 return err;
314
315 for (i = 0; i < num_vfs; i++)
316 ixgbe_vf_configuration(dev, (i | 0x10000000));
317
318 /* reset before enabling SRIOV to avoid mailbox issues */
319 ixgbe_sriov_reinit(adapter);
320
321 err = pci_enable_sriov(dev, num_vfs);
322 if (err) {
323 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
324 return err;
325 }
326 ixgbe_get_vfs(adapter);
327
328 return num_vfs;
329#else
330 return 0;
331#endif
332}
333
334static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
335{
336 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
337 int err;
338#ifdef CONFIG_PCI_IOV
339 u32 current_flags = adapter->flags;
340 int prev_num_vf = pci_num_vf(dev);
341#endif
342
343 err = ixgbe_disable_sriov(adapter);
344
345 /* Only reinit if no error and state changed */
346#ifdef CONFIG_PCI_IOV
347 if (!err && (current_flags != adapter->flags ||
348 prev_num_vf != pci_num_vf(dev)))
349 ixgbe_sriov_reinit(adapter);
350#endif
351
352 return err;
353}
354
355int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
356{
357 if (num_vfs == 0)
358 return ixgbe_pci_sriov_disable(dev);
359 else
360 return ixgbe_pci_sriov_enable(dev, num_vfs);
361}
362
363static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
364 u32 *msgbuf, u32 vf)
365{
366 int entries = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
367 u16 *hash_list = (u16 *)&msgbuf[1];
368 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
369 struct ixgbe_hw *hw = &adapter->hw;
370 int i;
371 u32 vector_bit;
372 u32 vector_reg;
373 u32 mta_reg;
374 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
375
376 /* only so many hash values supported */
377 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
378
379 /*
380 * salt away the number of multi cast addresses assigned
381 * to this VF for later use to restore when the PF multi cast
382 * list changes
383 */
384 vfinfo->num_vf_mc_hashes = entries;
385
386 /*
387 * VFs are limited to using the MTA hash table for their multicast
388 * addresses
389 */
390 for (i = 0; i < entries; i++) {
391 vfinfo->vf_mc_hashes[i] = hash_list[i];
392 }
393
394 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
395 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
396 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
397 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
398 mta_reg |= BIT(vector_bit);
399 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
400 }
401 vmolr |= IXGBE_VMOLR_ROMPE;
402 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
403
404 return 0;
405}
406
407#ifdef CONFIG_PCI_IOV
408void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
409{
410 struct ixgbe_hw *hw = &adapter->hw;
411 struct vf_data_storage *vfinfo;
412 int i, j;
413 u32 vector_bit;
414 u32 vector_reg;
415 u32 mta_reg;
416
417 for (i = 0; i < adapter->num_vfs; i++) {
418 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
419 vfinfo = &adapter->vfinfo[i];
420 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
421 hw->addr_ctrl.mta_in_use++;
422 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
423 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
424 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
425 mta_reg |= BIT(vector_bit);
426 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
427 }
428
429 if (vfinfo->num_vf_mc_hashes)
430 vmolr |= IXGBE_VMOLR_ROMPE;
431 else
432 vmolr &= ~IXGBE_VMOLR_ROMPE;
433 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
434 }
435
436 /* Restore any VF macvlans */
437 ixgbe_full_sync_mac_table(adapter);
438}
439#endif
440
441static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
442 u32 vf)
443{
444 struct ixgbe_hw *hw = &adapter->hw;
445 int err;
446
447 /* If VLAN overlaps with one the PF is currently monitoring make
448 * sure that we are able to allocate a VLVF entry. This may be
449 * redundant but it guarantees PF will maintain visibility to
450 * the VLAN.
451 */
452 if (add && test_bit(vid, adapter->active_vlans)) {
453 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
454 if (err)
455 return err;
456 }
457
458 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
459
460 if (add && !err)
461 return err;
462
463 /* If we failed to add the VF VLAN or we are removing the VF VLAN
464 * we may need to drop the PF pool bit in order to allow us to free
465 * up the VLVF resources.
466 */
467 if (test_bit(vid, adapter->active_vlans) ||
468 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
469 ixgbe_update_pf_promisc_vlvf(adapter, vid);
470
471 return err;
472}
473
474static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)
475{
476 struct ixgbe_hw *hw = &adapter->hw;
477 u32 max_frs;
478
479 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
480 e_err(drv, "VF max_frame %d out of range\n", max_frame);
481 return -EINVAL;
482 }
483
484 /*
485 * For 82599EB we have to keep all PFs and VFs operating with
486 * the same max_frame value in order to avoid sending an oversize
487 * frame to a VF. In order to guarantee this is handled correctly
488 * for all cases we have several special exceptions to take into
489 * account before we can enable the VF for receive
490 */
491 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
492 struct net_device *dev = adapter->netdev;
493 int pf_max_frame = dev->mtu + ETH_HLEN;
494 u32 reg_offset, vf_shift, vfre;
495 s32 err = 0;
496
497#ifdef CONFIG_FCOE
498 if (dev->features & NETIF_F_FCOE_MTU)
499 pf_max_frame = max_t(int, pf_max_frame,
500 IXGBE_FCOE_JUMBO_FRAME_SIZE);
501
502#endif /* CONFIG_FCOE */
503 switch (adapter->vfinfo[vf].vf_api) {
504 case ixgbe_mbox_api_11:
505 case ixgbe_mbox_api_12:
506 case ixgbe_mbox_api_13:
507 case ixgbe_mbox_api_14:
508 /* Version 1.1 supports jumbo frames on VFs if PF has
509 * jumbo frames enabled which means legacy VFs are
510 * disabled
511 */
512 if (pf_max_frame > ETH_FRAME_LEN)
513 break;
514 fallthrough;
515 default:
516 /* If the PF or VF are running w/ jumbo frames enabled
517 * we need to shut down the VF Rx path as we cannot
518 * support jumbo frames on legacy VFs
519 */
520 if ((pf_max_frame > ETH_FRAME_LEN) ||
521 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
522 err = -EINVAL;
523 break;
524 }
525
526 /* determine VF receive enable location */
527 vf_shift = vf % 32;
528 reg_offset = vf / 32;
529
530 /* enable or disable receive depending on error */
531 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
532 if (err)
533 vfre &= ~BIT(vf_shift);
534 else
535 vfre |= BIT(vf_shift);
536 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
537
538 if (err) {
539 e_err(drv, "VF max_frame %d out of range\n", max_frame);
540 return err;
541 }
542 }
543
544 /* pull current max frame size from hardware */
545 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
546 max_frs &= IXGBE_MHADD_MFS_MASK;
547 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
548
549 if (max_frs < max_frame) {
550 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
551 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
552 }
553
554 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
555
556 return 0;
557}
558
559static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
560{
561 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
562 vmolr |= IXGBE_VMOLR_BAM;
563 if (aupe)
564 vmolr |= IXGBE_VMOLR_AUPE;
565 else
566 vmolr &= ~IXGBE_VMOLR_AUPE;
567 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
568}
569
570static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
571{
572 struct ixgbe_hw *hw = &adapter->hw;
573
574 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
575}
576
577static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
578{
579 struct ixgbe_hw *hw = &adapter->hw;
580 u32 vlvfb_mask, pool_mask, i;
581
582 /* create mask for VF and other pools */
583 pool_mask = ~BIT(VMDQ_P(0) % 32);
584 vlvfb_mask = BIT(vf % 32);
585
586 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
587 for (i = IXGBE_VLVF_ENTRIES; i--;) {
588 u32 bits[2], vlvfb, vid, vfta, vlvf;
589 u32 word = i * 2 + vf / 32;
590 u32 mask;
591
592 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
593
594 /* if our bit isn't set we can skip it */
595 if (!(vlvfb & vlvfb_mask))
596 continue;
597
598 /* clear our bit from vlvfb */
599 vlvfb ^= vlvfb_mask;
600
601 /* create 64b mask to chedk to see if we should clear VLVF */
602 bits[word % 2] = vlvfb;
603 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
604
605 /* if other pools are present, just remove ourselves */
606 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
607 (bits[VMDQ_P(0) / 32] & pool_mask))
608 goto update_vlvfb;
609
610 /* if PF is present, leave VFTA */
611 if (bits[0] || bits[1])
612 goto update_vlvf;
613
614 /* if we cannot determine VLAN just remove ourselves */
615 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
616 if (!vlvf)
617 goto update_vlvfb;
618
619 vid = vlvf & VLAN_VID_MASK;
620 mask = BIT(vid % 32);
621
622 /* clear bit from VFTA */
623 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
624 if (vfta & mask)
625 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
626update_vlvf:
627 /* clear POOL selection enable */
628 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
629
630 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
631 vlvfb = 0;
632update_vlvfb:
633 /* clear pool bits */
634 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
635 }
636}
637
638static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
639 int vf, int index, unsigned char *mac_addr)
640{
641 struct vf_macvlans *entry;
642 bool found = false;
643 int retval = 0;
644
645 if (index <= 1) {
646 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
647 if (entry->vf == vf) {
648 entry->vf = -1;
649 entry->free = true;
650 entry->is_macvlan = false;
651 ixgbe_del_mac_filter(adapter,
652 entry->vf_macvlan, vf);
653 }
654 }
655 }
656
657 /*
658 * If index was zero then we were asked to clear the uc list
659 * for the VF. We're done.
660 */
661 if (!index)
662 return 0;
663
664 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
665 if (entry->free) {
666 found = true;
667 break;
668 }
669 }
670
671 /*
672 * If we traversed the entire list and didn't find a free entry
673 * then we're out of space on the RAR table. It's also possible
674 * for the &adapter->vf_mvs.l list to be empty because the original
675 * memory allocation for the list failed, which is not fatal but does
676 * mean we can't support VF requests for MACVLAN because we couldn't
677 * allocate memory for the list management required.
678 */
679 if (!found)
680 return -ENOSPC;
681
682 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
683 if (retval < 0)
684 return retval;
685
686 entry->free = false;
687 entry->is_macvlan = true;
688 entry->vf = vf;
689 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
690
691 return 0;
692}
693
694static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
695{
696 struct ixgbe_hw *hw = &adapter->hw;
697 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
698 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
699 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
700 u8 num_tcs = adapter->hw_tcs;
701 u32 reg_val;
702 u32 queue;
703
704 /* remove VLAN filters beloning to this VF */
705 ixgbe_clear_vf_vlans(adapter, vf);
706
707 /* add back PF assigned VLAN or VLAN 0 */
708 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
709
710 /* reset offloads to defaults */
711 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
712
713 /* set outgoing tags for VFs */
714 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
715 ixgbe_clear_vmvir(adapter, vf);
716 } else {
717 if (vfinfo->pf_qos || !num_tcs)
718 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
719 vfinfo->pf_qos, vf);
720 else
721 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
722 adapter->default_up, vf);
723
724 if (vfinfo->spoofchk_enabled) {
725 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
726 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
727 }
728 }
729
730 /* reset multicast table array for vf */
731 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
732
733 /* clear any ipsec table info */
734 ixgbe_ipsec_vf_clear(adapter, vf);
735
736 /* Flush and reset the mta with the new values */
737 ixgbe_set_rx_mode(adapter->netdev);
738
739 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
740 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
741
742 /* reset VF api back to unknown */
743 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
744
745 /* Restart each queue for given VF */
746 for (queue = 0; queue < q_per_pool; queue++) {
747 unsigned int reg_idx = (vf * q_per_pool) + queue;
748
749 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
750
751 /* Re-enabling only configured queues */
752 if (reg_val) {
753 reg_val |= IXGBE_TXDCTL_ENABLE;
754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
755 reg_val &= ~IXGBE_TXDCTL_ENABLE;
756 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
757 }
758 }
759
760 IXGBE_WRITE_FLUSH(hw);
761}
762
763static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
764{
765 struct ixgbe_hw *hw = &adapter->hw;
766 u32 word;
767
768 /* Clear VF's mailbox memory */
769 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
770 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
771
772 IXGBE_WRITE_FLUSH(hw);
773}
774
775static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
776 int vf, unsigned char *mac_addr)
777{
778 s32 retval;
779
780 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
781 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
782 if (retval >= 0)
783 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
784 ETH_ALEN);
785 else
786 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);
787
788 return retval;
789}
790
791int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
792{
793 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
794 unsigned int vfn = (event_mask & 0x3f);
795
796 bool enable = ((event_mask & 0x10000000U) != 0);
797
798 if (enable)
799 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
800
801 return 0;
802}
803
804static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
805 u32 qde)
806{
807 struct ixgbe_hw *hw = &adapter->hw;
808 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
809 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
810 int i;
811
812 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
813 u32 reg;
814
815 /* flush previous write */
816 IXGBE_WRITE_FLUSH(hw);
817
818 /* indicate to hardware that we want to set drop enable */
819 reg = IXGBE_QDE_WRITE | qde;
820 reg |= i << IXGBE_QDE_IDX_SHIFT;
821 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
822 }
823}
824
825/**
826 * ixgbe_set_vf_rx_tx - Set VF rx tx
827 * @adapter: Pointer to adapter struct
828 * @vf: VF identifier
829 *
830 * Set or reset correct transmit and receive for vf
831 **/
832static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)
833{
834 u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;
835 struct ixgbe_hw *hw = &adapter->hw;
836 u32 reg_offset, vf_shift;
837
838 vf_shift = vf % 32;
839 reg_offset = vf / 32;
840
841 reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
842 reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
843
844 if (adapter->vfinfo[vf].link_enable) {
845 reg_req_tx = reg_cur_tx | 1 << vf_shift;
846 reg_req_rx = reg_cur_rx | 1 << vf_shift;
847 } else {
848 reg_req_tx = reg_cur_tx & ~(1 << vf_shift);
849 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
850 }
851
852 /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
853 * For more info take a look at ixgbe_set_vf_lpe
854 */
855 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
856 struct net_device *dev = adapter->netdev;
857 int pf_max_frame = dev->mtu + ETH_HLEN;
858
859#if IS_ENABLED(CONFIG_FCOE)
860 if (dev->features & NETIF_F_FCOE_MTU)
861 pf_max_frame = max_t(int, pf_max_frame,
862 IXGBE_FCOE_JUMBO_FRAME_SIZE);
863#endif /* CONFIG_FCOE */
864
865 if (pf_max_frame > ETH_FRAME_LEN)
866 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
867 }
868
869 /* Enable/Disable particular VF */
870 if (reg_cur_tx != reg_req_tx)
871 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx);
872 if (reg_cur_rx != reg_req_rx)
873 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx);
874}
875
876static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
877{
878 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
879 struct ixgbe_hw *hw = &adapter->hw;
880 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
881 u32 reg, reg_offset, vf_shift;
882 u32 msgbuf[4] = {0, 0, 0, 0};
883 u8 *addr = (u8 *)(&msgbuf[1]);
884 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
885 int i;
886
887 e_info(probe, "VF Reset msg received from vf %d\n", vf);
888
889 /* reset the filters for the device */
890 ixgbe_vf_reset_event(adapter, vf);
891
892 ixgbe_vf_clear_mbx(adapter, vf);
893
894 /* set vf mac address */
895 if (!is_zero_ether_addr(vf_mac))
896 ixgbe_set_vf_mac(adapter, vf, vf_mac);
897
898 vf_shift = vf % 32;
899 reg_offset = vf / 32;
900
901 /* force drop enable for all VF Rx queues */
902 reg = IXGBE_QDE_ENABLE;
903 if (adapter->vfinfo[vf].pf_vlan)
904 reg |= IXGBE_QDE_HIDE_VLAN;
905
906 ixgbe_write_qde(adapter, vf, reg);
907
908 ixgbe_set_vf_rx_tx(adapter, vf);
909
910 /* enable VF mailbox for further messages */
911 adapter->vfinfo[vf].clear_to_send = true;
912
913 /* Enable counting of spoofed packets in the SSVPC register */
914 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
915 reg |= BIT(vf_shift);
916 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
917
918 /*
919 * Reset the VFs TDWBAL and TDWBAH registers
920 * which are not cleared by an FLR
921 */
922 for (i = 0; i < q_per_pool; i++) {
923 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
924 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
925 }
926
927 /* reply to reset with ack and vf mac address */
928 msgbuf[0] = IXGBE_VF_RESET;
929 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
930 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
931 memcpy(addr, vf_mac, ETH_ALEN);
932 } else {
933 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
934 }
935
936 /*
937 * Piggyback the multicast filter type so VF can compute the
938 * correct vectors
939 */
940 msgbuf[3] = hw->mac.mc_filter_type;
941 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
942
943 return 0;
944}
945
946static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
947 u32 *msgbuf, u32 vf)
948{
949 u8 *new_mac = ((u8 *)(&msgbuf[1]));
950
951 if (!is_valid_ether_addr(new_mac)) {
952 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
953 return -1;
954 }
955
956 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
957 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
958 e_warn(drv,
959 "VF %d attempted to override administratively set MAC address\n"
960 "Reload the VF driver to resume operations\n",
961 vf);
962 return -1;
963 }
964
965 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
966}
967
968static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
969 u32 *msgbuf, u32 vf)
970{
971 u32 add = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
972 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
973 u8 tcs = adapter->hw_tcs;
974
975 if (adapter->vfinfo[vf].pf_vlan || tcs) {
976 e_warn(drv,
977 "VF %d attempted to override administratively set VLAN configuration\n"
978 "Reload the VF driver to resume operations\n",
979 vf);
980 return -1;
981 }
982
983 /* VLAN 0 is a special case, don't allow it to be removed */
984 if (!vid && !add)
985 return 0;
986
987 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
988}
989
990static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
991 u32 *msgbuf, u32 vf)
992{
993 u8 *new_mac = ((u8 *)(&msgbuf[1]));
994 int index = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
995 int err;
996
997 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
998 index > 0) {
999 e_warn(drv,
1000 "VF %d requested MACVLAN filter but is administratively denied\n",
1001 vf);
1002 return -1;
1003 }
1004
1005 /* An non-zero index indicates the VF is setting a filter */
1006 if (index) {
1007 if (!is_valid_ether_addr(new_mac)) {
1008 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
1009 return -1;
1010 }
1011
1012 /*
1013 * If the VF is allowed to set MAC filters then turn off
1014 * anti-spoofing to avoid false positives.
1015 */
1016 if (adapter->vfinfo[vf].spoofchk_enabled) {
1017 struct ixgbe_hw *hw = &adapter->hw;
1018
1019 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
1020 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1021 }
1022 }
1023
1024 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
1025 if (err == -ENOSPC)
1026 e_warn(drv,
1027 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1028 vf);
1029
1030 return err < 0;
1031}
1032
1033static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1034 u32 *msgbuf, u32 vf)
1035{
1036 int api = msgbuf[1];
1037
1038 switch (api) {
1039 case ixgbe_mbox_api_10:
1040 case ixgbe_mbox_api_11:
1041 case ixgbe_mbox_api_12:
1042 case ixgbe_mbox_api_13:
1043 case ixgbe_mbox_api_14:
1044 adapter->vfinfo[vf].vf_api = api;
1045 return 0;
1046 default:
1047 break;
1048 }
1049
1050 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1051
1052 return -1;
1053}
1054
1055static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1056 u32 *msgbuf, u32 vf)
1057{
1058 struct net_device *dev = adapter->netdev;
1059 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1060 unsigned int default_tc = 0;
1061 u8 num_tcs = adapter->hw_tcs;
1062
1063 /* verify the PF is supporting the correct APIs */
1064 switch (adapter->vfinfo[vf].vf_api) {
1065 case ixgbe_mbox_api_20:
1066 case ixgbe_mbox_api_11:
1067 case ixgbe_mbox_api_12:
1068 case ixgbe_mbox_api_13:
1069 case ixgbe_mbox_api_14:
1070 break;
1071 default:
1072 return -1;
1073 }
1074
1075 /* only allow 1 Tx queue for bandwidth limiting */
1076 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1077 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1078
1079 /* if TCs > 1 determine which TC belongs to default user priority */
1080 if (num_tcs > 1)
1081 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1082
1083 /* notify VF of need for VLAN tag stripping, and correct queue */
1084 if (num_tcs)
1085 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1086 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1087 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1088 else
1089 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1090
1091 /* notify VF of default queue */
1092 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1093
1094 return 0;
1095}
1096
1097static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1098{
1099 u32 i, j;
1100 u32 *out_buf = &msgbuf[1];
1101 const u8 *reta = adapter->rss_indir_tbl;
1102 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1103
1104 /* Check if operation is permitted */
1105 if (!adapter->vfinfo[vf].rss_query_enabled)
1106 return -EPERM;
1107
1108 /* verify the PF is supporting the correct API */
1109 switch (adapter->vfinfo[vf].vf_api) {
1110 case ixgbe_mbox_api_14:
1111 case ixgbe_mbox_api_13:
1112 case ixgbe_mbox_api_12:
1113 break;
1114 default:
1115 return -EOPNOTSUPP;
1116 }
1117
1118 /* This mailbox command is supported (required) only for 82599 and x540
1119 * VFs which support up to 4 RSS queues. Therefore we will compress the
1120 * RETA by saving only 2 bits from each entry. This way we will be able
1121 * to transfer the whole RETA in a single mailbox operation.
1122 */
1123 for (i = 0; i < reta_size / 16; i++) {
1124 out_buf[i] = 0;
1125 for (j = 0; j < 16; j++)
1126 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1127 }
1128
1129 return 0;
1130}
1131
1132static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1133 u32 *msgbuf, u32 vf)
1134{
1135 u32 *rss_key = &msgbuf[1];
1136
1137 /* Check if the operation is permitted */
1138 if (!adapter->vfinfo[vf].rss_query_enabled)
1139 return -EPERM;
1140
1141 /* verify the PF is supporting the correct API */
1142 switch (adapter->vfinfo[vf].vf_api) {
1143 case ixgbe_mbox_api_14:
1144 case ixgbe_mbox_api_13:
1145 case ixgbe_mbox_api_12:
1146 break;
1147 default:
1148 return -EOPNOTSUPP;
1149 }
1150
1151 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1152
1153 return 0;
1154}
1155
1156static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1157 u32 *msgbuf, u32 vf)
1158{
1159 struct ixgbe_hw *hw = &adapter->hw;
1160 int xcast_mode = msgbuf[1];
1161 u32 vmolr, fctrl, disable, enable;
1162
1163 /* verify the PF is supporting the correct APIs */
1164 switch (adapter->vfinfo[vf].vf_api) {
1165 case ixgbe_mbox_api_12:
1166 /* promisc introduced in 1.3 version */
1167 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1168 return -EOPNOTSUPP;
1169 fallthrough;
1170 case ixgbe_mbox_api_13:
1171 case ixgbe_mbox_api_14:
1172 break;
1173 default:
1174 return -EOPNOTSUPP;
1175 }
1176
1177 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1178 !adapter->vfinfo[vf].trusted) {
1179 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1180 }
1181
1182 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1183 goto out;
1184
1185 switch (xcast_mode) {
1186 case IXGBEVF_XCAST_MODE_NONE:
1187 disable = IXGBE_VMOLR_ROMPE |
1188 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1189 enable = IXGBE_VMOLR_BAM;
1190 break;
1191 case IXGBEVF_XCAST_MODE_MULTI:
1192 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1193 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1194 break;
1195 case IXGBEVF_XCAST_MODE_ALLMULTI:
1196 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1197 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1198 break;
1199 case IXGBEVF_XCAST_MODE_PROMISC:
1200 if (hw->mac.type <= ixgbe_mac_82599EB)
1201 return -EOPNOTSUPP;
1202
1203 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1204 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1205 /* VF promisc requires PF in promisc */
1206 e_warn(drv,
1207 "Enabling VF promisc requires PF in promisc\n");
1208 return -EPERM;
1209 }
1210
1211 disable = IXGBE_VMOLR_VPE;
1212 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1213 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;
1214 break;
1215 default:
1216 return -EOPNOTSUPP;
1217 }
1218
1219 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1220 vmolr &= ~disable;
1221 vmolr |= enable;
1222 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1223
1224 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1225
1226out:
1227 msgbuf[1] = xcast_mode;
1228
1229 return 0;
1230}
1231
1232static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
1233 u32 *msgbuf, u32 vf)
1234{
1235 u32 *link_state = &msgbuf[1];
1236
1237 /* verify the PF is supporting the correct API */
1238 switch (adapter->vfinfo[vf].vf_api) {
1239 case ixgbe_mbox_api_12:
1240 case ixgbe_mbox_api_13:
1241 case ixgbe_mbox_api_14:
1242 break;
1243 default:
1244 return -EOPNOTSUPP;
1245 }
1246
1247 *link_state = adapter->vfinfo[vf].link_enable;
1248
1249 return 0;
1250}
1251
1252static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1253{
1254 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1255 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1256 struct ixgbe_hw *hw = &adapter->hw;
1257 s32 retval;
1258
1259 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1260
1261 if (retval) {
1262 pr_err("Error receiving message from VF\n");
1263 return retval;
1264 }
1265
1266 /* this is a message we already processed, do nothing */
1267 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1268 return 0;
1269
1270 /* flush the ack before we write any messages back */
1271 IXGBE_WRITE_FLUSH(hw);
1272
1273 if (msgbuf[0] == IXGBE_VF_RESET)
1274 return ixgbe_vf_reset_msg(adapter, vf);
1275
1276 /*
1277 * until the vf completes a virtual function reset it should not be
1278 * allowed to start any configuration.
1279 */
1280 if (!adapter->vfinfo[vf].clear_to_send) {
1281 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1282 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1283 return 0;
1284 }
1285
1286 switch ((msgbuf[0] & 0xFFFF)) {
1287 case IXGBE_VF_SET_MAC_ADDR:
1288 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1289 break;
1290 case IXGBE_VF_SET_MULTICAST:
1291 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1292 break;
1293 case IXGBE_VF_SET_VLAN:
1294 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1295 break;
1296 case IXGBE_VF_SET_LPE:
1297 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1298 break;
1299 case IXGBE_VF_SET_MACVLAN:
1300 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1301 break;
1302 case IXGBE_VF_API_NEGOTIATE:
1303 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1304 break;
1305 case IXGBE_VF_GET_QUEUES:
1306 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1307 break;
1308 case IXGBE_VF_GET_RETA:
1309 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1310 break;
1311 case IXGBE_VF_GET_RSS_KEY:
1312 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1313 break;
1314 case IXGBE_VF_UPDATE_XCAST_MODE:
1315 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1316 break;
1317 case IXGBE_VF_GET_LINK_STATE:
1318 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);
1319 break;
1320 case IXGBE_VF_IPSEC_ADD:
1321 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1322 break;
1323 case IXGBE_VF_IPSEC_DEL:
1324 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1325 break;
1326 default:
1327 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1328 retval = -EIO;
1329 break;
1330 }
1331
1332 /* notify the VF of the results of what it sent us */
1333 if (retval)
1334 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1335 else
1336 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1337
1338 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1339
1340 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1341
1342 return retval;
1343}
1344
1345static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1346{
1347 struct ixgbe_hw *hw = &adapter->hw;
1348 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1349
1350 /* if device isn't clear to send it shouldn't be reading either */
1351 if (!adapter->vfinfo[vf].clear_to_send)
1352 ixgbe_write_mbx(hw, &msg, 1, vf);
1353}
1354
1355void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1356{
1357 struct ixgbe_hw *hw = &adapter->hw;
1358 unsigned long flags;
1359 u32 vf;
1360
1361 spin_lock_irqsave(&adapter->vfs_lock, flags);
1362 for (vf = 0; vf < adapter->num_vfs; vf++) {
1363 /* process any reset requests */
1364 if (!ixgbe_check_for_rst(hw, vf))
1365 ixgbe_vf_reset_event(adapter, vf);
1366
1367 /* process any messages pending */
1368 if (!ixgbe_check_for_msg(hw, vf))
1369 ixgbe_rcv_msg_from_vf(adapter, vf);
1370
1371 /* process any acks */
1372 if (!ixgbe_check_for_ack(hw, vf))
1373 ixgbe_rcv_ack_from_vf(adapter, vf);
1374 }
1375 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
1376}
1377
1378static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1379{
1380 struct ixgbe_hw *hw = &adapter->hw;
1381 u32 ping;
1382
1383 ping = IXGBE_PF_CONTROL_MSG;
1384 if (adapter->vfinfo[vf].clear_to_send)
1385 ping |= IXGBE_VT_MSGTYPE_CTS;
1386 ixgbe_write_mbx(hw, &ping, 1, vf);
1387}
1388
1389void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1390{
1391 struct ixgbe_hw *hw = &adapter->hw;
1392 u32 ping;
1393 int i;
1394
1395 for (i = 0 ; i < adapter->num_vfs; i++) {
1396 ping = IXGBE_PF_CONTROL_MSG;
1397 if (adapter->vfinfo[i].clear_to_send)
1398 ping |= IXGBE_VT_MSGTYPE_CTS;
1399 ixgbe_write_mbx(hw, &ping, 1, i);
1400 }
1401}
1402
1403/**
1404 * ixgbe_set_all_vfs - update vfs queues
1405 * @adapter: Pointer to adapter struct
1406 *
1407 * Update setting transmit and receive queues for all vfs
1408 **/
1409void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)
1410{
1411 int i;
1412
1413 for (i = 0 ; i < adapter->num_vfs; i++)
1414 ixgbe_set_vf_link_state(adapter, i,
1415 adapter->vfinfo[i].link_state);
1416}
1417
1418int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1419{
1420 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1421 s32 retval;
1422
1423 if (vf >= adapter->num_vfs)
1424 return -EINVAL;
1425
1426 if (is_valid_ether_addr(mac)) {
1427 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1428 mac, vf);
1429 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1430
1431 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1432 if (retval >= 0) {
1433 adapter->vfinfo[vf].pf_set_mac = true;
1434
1435 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1436 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1437 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1438 }
1439 } else {
1440 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1441 }
1442 } else if (is_zero_ether_addr(mac)) {
1443 unsigned char *vf_mac_addr =
1444 adapter->vfinfo[vf].vf_mac_addresses;
1445
1446 /* nothing to do */
1447 if (is_zero_ether_addr(vf_mac_addr))
1448 return 0;
1449
1450 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1451
1452 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1453 if (retval >= 0) {
1454 adapter->vfinfo[vf].pf_set_mac = false;
1455 memcpy(vf_mac_addr, mac, ETH_ALEN);
1456 } else {
1457 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1458 }
1459 } else {
1460 retval = -EINVAL;
1461 }
1462
1463 return retval;
1464}
1465
1466static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1467 u16 vlan, u8 qos)
1468{
1469 struct ixgbe_hw *hw = &adapter->hw;
1470 int err;
1471
1472 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1473 if (err)
1474 goto out;
1475
1476 /* Revoke tagless access via VLAN 0 */
1477 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1478
1479 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1480 ixgbe_set_vmolr(hw, vf, false);
1481
1482 /* enable hide vlan on X550 */
1483 if (hw->mac.type >= ixgbe_mac_X550)
1484 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1485 IXGBE_QDE_HIDE_VLAN);
1486
1487 adapter->vfinfo[vf].pf_vlan = vlan;
1488 adapter->vfinfo[vf].pf_qos = qos;
1489 dev_info(&adapter->pdev->dev,
1490 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1491 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1492 dev_warn(&adapter->pdev->dev,
1493 "The VF VLAN has been set, but the PF device is not up.\n");
1494 dev_warn(&adapter->pdev->dev,
1495 "Bring the PF device up before attempting to use the VF device.\n");
1496 }
1497
1498out:
1499 return err;
1500}
1501
1502static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1503{
1504 struct ixgbe_hw *hw = &adapter->hw;
1505 int err;
1506
1507 err = ixgbe_set_vf_vlan(adapter, false,
1508 adapter->vfinfo[vf].pf_vlan, vf);
1509 /* Restore tagless access via VLAN 0 */
1510 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1511 ixgbe_clear_vmvir(adapter, vf);
1512 ixgbe_set_vmolr(hw, vf, true);
1513
1514 /* disable hide VLAN on X550 */
1515 if (hw->mac.type >= ixgbe_mac_X550)
1516 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1517
1518 adapter->vfinfo[vf].pf_vlan = 0;
1519 adapter->vfinfo[vf].pf_qos = 0;
1520
1521 return err;
1522}
1523
1524int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1525 u8 qos, __be16 vlan_proto)
1526{
1527 int err = 0;
1528 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1529
1530 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1531 return -EINVAL;
1532 if (vlan_proto != htons(ETH_P_8021Q))
1533 return -EPROTONOSUPPORT;
1534 if (vlan || qos) {
1535 /* Check if there is already a port VLAN set, if so
1536 * we have to delete the old one first before we
1537 * can set the new one. The usage model had
1538 * previously assumed the user would delete the
1539 * old port VLAN before setting a new one but this
1540 * is not necessarily the case.
1541 */
1542 if (adapter->vfinfo[vf].pf_vlan)
1543 err = ixgbe_disable_port_vlan(adapter, vf);
1544 if (err)
1545 goto out;
1546 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1547 } else {
1548 err = ixgbe_disable_port_vlan(adapter, vf);
1549 }
1550
1551out:
1552 return err;
1553}
1554
1555int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1556{
1557 switch (adapter->link_speed) {
1558 case IXGBE_LINK_SPEED_100_FULL:
1559 return 100;
1560 case IXGBE_LINK_SPEED_1GB_FULL:
1561 return 1000;
1562 case IXGBE_LINK_SPEED_10GB_FULL:
1563 return 10000;
1564 default:
1565 return 0;
1566 }
1567}
1568
1569static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1570{
1571 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1572 struct ixgbe_hw *hw = &adapter->hw;
1573 u32 bcnrc_val = 0;
1574 u16 queue, queues_per_pool;
1575 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1576
1577 if (tx_rate) {
1578 /* start with base link speed value */
1579 bcnrc_val = adapter->vf_rate_link_speed;
1580
1581 /* Calculate the rate factor values to set */
1582 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1583 bcnrc_val /= tx_rate;
1584
1585 /* clear everything but the rate factor */
1586 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1587 IXGBE_RTTBCNRC_RF_DEC_MASK;
1588
1589 /* enable the rate scheduler */
1590 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1591 }
1592
1593 /*
1594 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1595 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1596 * and 0x004 otherwise.
1597 */
1598 switch (hw->mac.type) {
1599 case ixgbe_mac_82599EB:
1600 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1601 break;
1602 case ixgbe_mac_X540:
1603 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1604 break;
1605 default:
1606 break;
1607 }
1608
1609 /* determine how many queues per pool based on VMDq mask */
1610 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1611
1612 /* write value for all Tx queues belonging to VF */
1613 for (queue = 0; queue < queues_per_pool; queue++) {
1614 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1615
1616 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1617 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1618 }
1619}
1620
1621void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1622{
1623 int i;
1624
1625 /* VF Tx rate limit was not set */
1626 if (!adapter->vf_rate_link_speed)
1627 return;
1628
1629 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1630 adapter->vf_rate_link_speed = 0;
1631 dev_info(&adapter->pdev->dev,
1632 "Link speed has been changed. VF Transmit rate is disabled\n");
1633 }
1634
1635 for (i = 0; i < adapter->num_vfs; i++) {
1636 if (!adapter->vf_rate_link_speed)
1637 adapter->vfinfo[i].tx_rate = 0;
1638
1639 ixgbe_set_vf_rate_limit(adapter, i);
1640 }
1641}
1642
1643int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1644 int max_tx_rate)
1645{
1646 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1647 int link_speed;
1648
1649 /* verify VF is active */
1650 if (vf >= adapter->num_vfs)
1651 return -EINVAL;
1652
1653 /* verify link is up */
1654 if (!adapter->link_up)
1655 return -EINVAL;
1656
1657 /* verify we are linked at 10Gbps */
1658 link_speed = ixgbe_link_mbps(adapter);
1659 if (link_speed != 10000)
1660 return -EINVAL;
1661
1662 if (min_tx_rate)
1663 return -EINVAL;
1664
1665 /* rate limit cannot be less than 10Mbs or greater than link speed */
1666 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1667 return -EINVAL;
1668
1669 /* store values */
1670 adapter->vf_rate_link_speed = link_speed;
1671 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1672
1673 /* update hardware configuration */
1674 ixgbe_set_vf_rate_limit(adapter, vf);
1675
1676 return 0;
1677}
1678
1679int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1680{
1681 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1682 struct ixgbe_hw *hw = &adapter->hw;
1683
1684 if (vf >= adapter->num_vfs)
1685 return -EINVAL;
1686
1687 adapter->vfinfo[vf].spoofchk_enabled = setting;
1688
1689 /* configure MAC spoofing */
1690 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1691
1692 /* configure VLAN spoofing */
1693 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1694
1695 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1696 * calling set_ethertype_anti_spoofing for each VF in loop below
1697 */
1698 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1699 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1700 (IXGBE_ETQF_FILTER_EN |
1701 IXGBE_ETQF_TX_ANTISPOOF |
1702 ETH_P_LLDP));
1703
1704 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1705 (IXGBE_ETQF_FILTER_EN |
1706 IXGBE_ETQF_TX_ANTISPOOF |
1707 ETH_P_PAUSE));
1708
1709 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1710 }
1711
1712 return 0;
1713}
1714
1715/**
1716 * ixgbe_set_vf_link_state - Set link state
1717 * @adapter: Pointer to adapter struct
1718 * @vf: VF identifier
1719 * @state: required link state
1720 *
1721 * Set a link force state on/off a single vf
1722 **/
1723void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)
1724{
1725 adapter->vfinfo[vf].link_state = state;
1726
1727 switch (state) {
1728 case IFLA_VF_LINK_STATE_AUTO:
1729 if (test_bit(__IXGBE_DOWN, &adapter->state))
1730 adapter->vfinfo[vf].link_enable = false;
1731 else
1732 adapter->vfinfo[vf].link_enable = true;
1733 break;
1734 case IFLA_VF_LINK_STATE_ENABLE:
1735 adapter->vfinfo[vf].link_enable = true;
1736 break;
1737 case IFLA_VF_LINK_STATE_DISABLE:
1738 adapter->vfinfo[vf].link_enable = false;
1739 break;
1740 }
1741
1742 ixgbe_set_vf_rx_tx(adapter, vf);
1743
1744 /* restart the VF */
1745 adapter->vfinfo[vf].clear_to_send = false;
1746 ixgbe_ping_vf(adapter, vf);
1747}
1748
1749/**
1750 * ixgbe_ndo_set_vf_link_state - Set link state
1751 * @netdev: network interface device structure
1752 * @vf: VF identifier
1753 * @state: required link state
1754 *
1755 * Set the link state of a specified VF, regardless of physical link state
1756 **/
1757int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)
1758{
1759 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1760 int ret = 0;
1761
1762 if (vf < 0 || vf >= adapter->num_vfs) {
1763 dev_err(&adapter->pdev->dev,
1764 "NDO set VF link - invalid VF identifier %d\n", vf);
1765 return -EINVAL;
1766 }
1767
1768 switch (state) {
1769 case IFLA_VF_LINK_STATE_ENABLE:
1770 dev_info(&adapter->pdev->dev,
1771 "NDO set VF %d link state %d - not supported\n",
1772 vf, state);
1773 break;
1774 case IFLA_VF_LINK_STATE_DISABLE:
1775 dev_info(&adapter->pdev->dev,
1776 "NDO set VF %d link state disable\n", vf);
1777 ixgbe_set_vf_link_state(adapter, vf, state);
1778 break;
1779 case IFLA_VF_LINK_STATE_AUTO:
1780 dev_info(&adapter->pdev->dev,
1781 "NDO set VF %d link state auto\n", vf);
1782 ixgbe_set_vf_link_state(adapter, vf, state);
1783 break;
1784 default:
1785 dev_err(&adapter->pdev->dev,
1786 "NDO set VF %d - invalid link state %d\n", vf, state);
1787 ret = -EINVAL;
1788 }
1789
1790 return ret;
1791}
1792
1793int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1794 bool setting)
1795{
1796 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1797
1798 /* This operation is currently supported only for 82599 and x540
1799 * devices.
1800 */
1801 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1802 adapter->hw.mac.type >= ixgbe_mac_X550)
1803 return -EOPNOTSUPP;
1804
1805 if (vf >= adapter->num_vfs)
1806 return -EINVAL;
1807
1808 adapter->vfinfo[vf].rss_query_enabled = setting;
1809
1810 return 0;
1811}
1812
1813int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1814{
1815 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1816
1817 if (vf >= adapter->num_vfs)
1818 return -EINVAL;
1819
1820 /* nothing to do */
1821 if (adapter->vfinfo[vf].trusted == setting)
1822 return 0;
1823
1824 adapter->vfinfo[vf].trusted = setting;
1825
1826 /* reset VF to reconfigure features */
1827 adapter->vfinfo[vf].clear_to_send = false;
1828 ixgbe_ping_vf(adapter, vf);
1829
1830 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1831
1832 return 0;
1833}
1834
1835int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1836 int vf, struct ifla_vf_info *ivi)
1837{
1838 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1839 if (vf >= adapter->num_vfs)
1840 return -EINVAL;
1841 ivi->vf = vf;
1842 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1843 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1844 ivi->min_tx_rate = 0;
1845 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1846 ivi->qos = adapter->vfinfo[vf].pf_qos;
1847 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1848 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1849 ivi->trusted = adapter->vfinfo[vf].trusted;
1850 ivi->linkstate = adapter->vfinfo[vf].link_state;
1851 return 0;
1852}
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
49static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
50{
51 struct ixgbe_hw *hw = &adapter->hw;
52 int num_vf_macvlans, i;
53 struct vf_macvlans *mv_list;
54
55 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
56 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
57
58 /* Enable VMDq flag so device will be set in VM mode */
59 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
60 if (!adapter->ring_feature[RING_F_VMDQ].limit)
61 adapter->ring_feature[RING_F_VMDQ].limit = 1;
62 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
63
64 num_vf_macvlans = hw->mac.num_rar_entries -
65 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
66
67 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
68 sizeof(struct vf_macvlans),
69 GFP_KERNEL);
70 if (mv_list) {
71 /* Initialize list of VF macvlans */
72 INIT_LIST_HEAD(&adapter->vf_mvs.l);
73 for (i = 0; i < num_vf_macvlans; i++) {
74 mv_list->vf = -1;
75 mv_list->free = true;
76 list_add(&mv_list->l, &adapter->vf_mvs.l);
77 mv_list++;
78 }
79 }
80
81 /* Initialize default switching mode VEB */
82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
83 adapter->bridge_mode = BRIDGE_MODE_VEB;
84
85 /* If call to enable VFs succeeded then allocate memory
86 * for per VF control structures.
87 */
88 adapter->vfinfo =
89 kcalloc(adapter->num_vfs,
90 sizeof(struct vf_data_storage), GFP_KERNEL);
91 if (adapter->vfinfo) {
92 /* limit trafffic classes based on VFs enabled */
93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
94 (adapter->num_vfs < 16)) {
95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
97 } else if (adapter->num_vfs < 32) {
98 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
100 } else {
101 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
103 }
104
105 /* Disable RSC when in SR-IOV mode */
106 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
107 IXGBE_FLAG2_RSC_ENABLED);
108
109 for (i = 0; i < adapter->num_vfs; i++) {
110 /* enable spoof checking for all VFs */
111 adapter->vfinfo[i].spoofchk_enabled = true;
112
113 /* We support VF RSS querying only for 82599 and x540
114 * devices at the moment. These devices share RSS
115 * indirection table and RSS hash key with PF therefore
116 * we want to disable the querying by default.
117 */
118 adapter->vfinfo[i].rss_query_enabled = 0;
119
120 /* Untrust all VFs */
121 adapter->vfinfo[i].trusted = false;
122
123 /* set the default xcast mode */
124 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
125 }
126
127 return 0;
128 }
129
130 return -ENOMEM;
131}
132
133/**
134 * ixgbe_get_vfs - Find and take references to all vf devices
135 * @adapter: Pointer to adapter struct
136 */
137static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
138{
139 struct pci_dev *pdev = adapter->pdev;
140 u16 vendor = pdev->vendor;
141 struct pci_dev *vfdev;
142 int vf = 0;
143 u16 vf_id;
144 int pos;
145
146 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
147 if (!pos)
148 return;
149 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
150
151 vfdev = pci_get_device(vendor, vf_id, NULL);
152 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
153 if (!vfdev->is_virtfn)
154 continue;
155 if (vfdev->physfn != pdev)
156 continue;
157 if (vf >= adapter->num_vfs)
158 continue;
159 pci_dev_get(vfdev);
160 adapter->vfinfo[vf].vfdev = vfdev;
161 ++vf;
162 }
163}
164
165/* Note this function is called when the user wants to enable SR-IOV
166 * VFs using the now deprecated module parameter
167 */
168void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
169{
170 int pre_existing_vfs = 0;
171
172 pre_existing_vfs = pci_num_vf(adapter->pdev);
173 if (!pre_existing_vfs && !adapter->num_vfs)
174 return;
175
176 /* If there are pre-existing VFs then we have to force
177 * use of that many - over ride any module parameter value.
178 * This may result from the user unloading the PF driver
179 * while VFs were assigned to guest VMs or because the VFs
180 * have been created via the new PCI SR-IOV sysfs interface.
181 */
182 if (pre_existing_vfs) {
183 adapter->num_vfs = pre_existing_vfs;
184 dev_warn(&adapter->pdev->dev,
185 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
186 } else {
187 int err;
188 /*
189 * The 82599 supports up to 64 VFs per physical function
190 * but this implementation limits allocation to 63 so that
191 * basic networking resources are still available to the
192 * physical function. If the user requests greater than
193 * 63 VFs then it is an error - reset to default of zero.
194 */
195 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
196
197 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
198 if (err) {
199 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
200 adapter->num_vfs = 0;
201 return;
202 }
203 }
204
205 if (!__ixgbe_enable_sriov(adapter)) {
206 ixgbe_get_vfs(adapter);
207 return;
208 }
209
210 /* If we have gotten to this point then there is no memory available
211 * to manage the VF devices - print message and bail.
212 */
213 e_err(probe, "Unable to allocate memory for VF Data Storage - "
214 "SRIOV disabled\n");
215 ixgbe_disable_sriov(adapter);
216}
217
218#endif /* #ifdef CONFIG_PCI_IOV */
219int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
220{
221 unsigned int num_vfs = adapter->num_vfs, vf;
222 struct ixgbe_hw *hw = &adapter->hw;
223 u32 gpie;
224 u32 vmdctl;
225 int rss;
226
227 /* set num VFs to 0 to prevent access to vfinfo */
228 adapter->num_vfs = 0;
229
230 /* put the reference to all of the vf devices */
231 for (vf = 0; vf < num_vfs; ++vf) {
232 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
233
234 if (!vfdev)
235 continue;
236 adapter->vfinfo[vf].vfdev = NULL;
237 pci_dev_put(vfdev);
238 }
239
240 /* free VF control structures */
241 kfree(adapter->vfinfo);
242 adapter->vfinfo = NULL;
243
244 /* free macvlan list */
245 kfree(adapter->mv_list);
246 adapter->mv_list = NULL;
247
248 /* if SR-IOV is already disabled then there is nothing to do */
249 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
250 return 0;
251
252#ifdef CONFIG_PCI_IOV
253 /*
254 * If our VFs are assigned we cannot shut down SR-IOV
255 * without causing issues, so just leave the hardware
256 * available but disabled
257 */
258 if (pci_vfs_assigned(adapter->pdev)) {
259 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
260 return -EPERM;
261 }
262 /* disable iov and allow time for transactions to clear */
263 pci_disable_sriov(adapter->pdev);
264#endif
265
266 /* turn off device IOV mode */
267 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
268 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
269 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
270 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
271
272 /* set default pool back to 0 */
273 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
274 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
275 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
276 IXGBE_WRITE_FLUSH(hw);
277
278 /* Disable VMDq flag so device will be set in VM mode */
279 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
280 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
281 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
282 rss = min_t(int, ixgbe_max_rss_indices(adapter),
283 num_online_cpus());
284 } else {
285 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
286 }
287
288 adapter->ring_feature[RING_F_VMDQ].offset = 0;
289 adapter->ring_feature[RING_F_RSS].limit = rss;
290
291 /* take a breather then clean up driver data */
292 msleep(100);
293 return 0;
294}
295
296static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
297{
298#ifdef CONFIG_PCI_IOV
299 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
300 int err = 0;
301 int i;
302 int pre_existing_vfs = pci_num_vf(dev);
303
304 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
305 err = ixgbe_disable_sriov(adapter);
306 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
307 return num_vfs;
308
309 if (err)
310 return err;
311
312 /* While the SR-IOV capability structure reports total VFs to be 64,
313 * we have to limit the actual number allocated based on two factors.
314 * First, we reserve some transmit/receive resources for the PF.
315 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
316 * account for this, so that we don't accidentally allocate more VFs
317 * than we have available pools. The PCI bus driver already checks for
318 * other values out of range.
319 */
320 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
321 return -EPERM;
322
323 adapter->num_vfs = num_vfs;
324
325 err = __ixgbe_enable_sriov(adapter);
326 if (err)
327 return err;
328
329 for (i = 0; i < adapter->num_vfs; i++)
330 ixgbe_vf_configuration(dev, (i | 0x10000000));
331
332 /* reset before enabling SRIOV to avoid mailbox issues */
333 ixgbe_sriov_reinit(adapter);
334
335 err = pci_enable_sriov(dev, num_vfs);
336 if (err) {
337 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
338 return err;
339 }
340 ixgbe_get_vfs(adapter);
341
342 return num_vfs;
343#else
344 return 0;
345#endif
346}
347
348static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
349{
350 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
351 int err;
352#ifdef CONFIG_PCI_IOV
353 u32 current_flags = adapter->flags;
354#endif
355
356 err = ixgbe_disable_sriov(adapter);
357
358 /* Only reinit if no error and state changed */
359#ifdef CONFIG_PCI_IOV
360 if (!err && current_flags != adapter->flags)
361 ixgbe_sriov_reinit(adapter);
362#endif
363
364 return err;
365}
366
367int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
368{
369 if (num_vfs == 0)
370 return ixgbe_pci_sriov_disable(dev);
371 else
372 return ixgbe_pci_sriov_enable(dev, num_vfs);
373}
374
375static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
376 u32 *msgbuf, u32 vf)
377{
378 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
379 >> IXGBE_VT_MSGINFO_SHIFT;
380 u16 *hash_list = (u16 *)&msgbuf[1];
381 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
382 struct ixgbe_hw *hw = &adapter->hw;
383 int i;
384 u32 vector_bit;
385 u32 vector_reg;
386 u32 mta_reg;
387 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
388
389 /* only so many hash values supported */
390 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
391
392 /*
393 * salt away the number of multi cast addresses assigned
394 * to this VF for later use to restore when the PF multi cast
395 * list changes
396 */
397 vfinfo->num_vf_mc_hashes = entries;
398
399 /*
400 * VFs are limited to using the MTA hash table for their multicast
401 * addresses
402 */
403 for (i = 0; i < entries; i++) {
404 vfinfo->vf_mc_hashes[i] = hash_list[i];
405 }
406
407 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
408 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
409 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
410 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
411 mta_reg |= BIT(vector_bit);
412 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
413 }
414 vmolr |= IXGBE_VMOLR_ROMPE;
415 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
416
417 return 0;
418}
419
420#ifdef CONFIG_PCI_IOV
421void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
422{
423 struct ixgbe_hw *hw = &adapter->hw;
424 struct vf_data_storage *vfinfo;
425 int i, j;
426 u32 vector_bit;
427 u32 vector_reg;
428 u32 mta_reg;
429
430 for (i = 0; i < adapter->num_vfs; i++) {
431 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
432 vfinfo = &adapter->vfinfo[i];
433 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
434 hw->addr_ctrl.mta_in_use++;
435 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
436 vector_bit = vfinfo->vf_mc_hashes[j] & 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
442 if (vfinfo->num_vf_mc_hashes)
443 vmolr |= IXGBE_VMOLR_ROMPE;
444 else
445 vmolr &= ~IXGBE_VMOLR_ROMPE;
446 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
447 }
448
449 /* Restore any VF macvlans */
450 ixgbe_full_sync_mac_table(adapter);
451}
452#endif
453
454static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
455 u32 vf)
456{
457 struct ixgbe_hw *hw = &adapter->hw;
458 int err;
459
460 /* If VLAN overlaps with one the PF is currently monitoring make
461 * sure that we are able to allocate a VLVF entry. This may be
462 * redundant but it guarantees PF will maintain visibility to
463 * the VLAN.
464 */
465 if (add && test_bit(vid, adapter->active_vlans)) {
466 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
467 if (err)
468 return err;
469 }
470
471 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
472
473 if (add && !err)
474 return err;
475
476 /* If we failed to add the VF VLAN or we are removing the VF VLAN
477 * we may need to drop the PF pool bit in order to allow us to free
478 * up the VLVF resources.
479 */
480 if (test_bit(vid, adapter->active_vlans) ||
481 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
482 ixgbe_update_pf_promisc_vlvf(adapter, vid);
483
484 return err;
485}
486
487static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
488{
489 struct ixgbe_hw *hw = &adapter->hw;
490 int max_frame = msgbuf[1];
491 u32 max_frs;
492
493 /*
494 * For 82599EB we have to keep all PFs and VFs operating with
495 * the same max_frame value in order to avoid sending an oversize
496 * frame to a VF. In order to guarantee this is handled correctly
497 * for all cases we have several special exceptions to take into
498 * account before we can enable the VF for receive
499 */
500 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
501 struct net_device *dev = adapter->netdev;
502 int pf_max_frame = dev->mtu + ETH_HLEN;
503 u32 reg_offset, vf_shift, vfre;
504 s32 err = 0;
505
506#ifdef CONFIG_FCOE
507 if (dev->features & NETIF_F_FCOE_MTU)
508 pf_max_frame = max_t(int, pf_max_frame,
509 IXGBE_FCOE_JUMBO_FRAME_SIZE);
510
511#endif /* CONFIG_FCOE */
512 switch (adapter->vfinfo[vf].vf_api) {
513 case ixgbe_mbox_api_11:
514 case ixgbe_mbox_api_12:
515 /*
516 * Version 1.1 supports jumbo frames on VFs if PF has
517 * jumbo frames enabled which means legacy VFs are
518 * disabled
519 */
520 if (pf_max_frame > ETH_FRAME_LEN)
521 break;
522 default:
523 /*
524 * If the PF or VF are running w/ jumbo frames enabled
525 * we need to shut down the VF Rx path as we cannot
526 * support jumbo frames on legacy VFs
527 */
528 if ((pf_max_frame > ETH_FRAME_LEN) ||
529 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
530 err = -EINVAL;
531 break;
532 }
533
534 /* determine VF receive enable location */
535 vf_shift = vf % 32;
536 reg_offset = vf / 32;
537
538 /* enable or disable receive depending on error */
539 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
540 if (err)
541 vfre &= ~BIT(vf_shift);
542 else
543 vfre |= BIT(vf_shift);
544 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
545
546 if (err) {
547 e_err(drv, "VF max_frame %d out of range\n", max_frame);
548 return err;
549 }
550 }
551
552 /* MTU < 68 is an error and causes problems on some kernels */
553 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
554 e_err(drv, "VF max_frame %d out of range\n", max_frame);
555 return -EINVAL;
556 }
557
558 /* pull current max frame size from hardware */
559 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
560 max_frs &= IXGBE_MHADD_MFS_MASK;
561 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
562
563 if (max_frs < max_frame) {
564 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
565 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
566 }
567
568 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
569
570 return 0;
571}
572
573static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
574{
575 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
576 vmolr |= IXGBE_VMOLR_BAM;
577 if (aupe)
578 vmolr |= IXGBE_VMOLR_AUPE;
579 else
580 vmolr &= ~IXGBE_VMOLR_AUPE;
581 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
582}
583
584static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
585{
586 struct ixgbe_hw *hw = &adapter->hw;
587
588 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
589}
590
591static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
592{
593 struct ixgbe_hw *hw = &adapter->hw;
594 u32 vlvfb_mask, pool_mask, i;
595
596 /* create mask for VF and other pools */
597 pool_mask = ~BIT(VMDQ_P(0) % 32);
598 vlvfb_mask = BIT(vf % 32);
599
600 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
601 for (i = IXGBE_VLVF_ENTRIES; i--;) {
602 u32 bits[2], vlvfb, vid, vfta, vlvf;
603 u32 word = i * 2 + vf / 32;
604 u32 mask;
605
606 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
607
608 /* if our bit isn't set we can skip it */
609 if (!(vlvfb & vlvfb_mask))
610 continue;
611
612 /* clear our bit from vlvfb */
613 vlvfb ^= vlvfb_mask;
614
615 /* create 64b mask to chedk to see if we should clear VLVF */
616 bits[word % 2] = vlvfb;
617 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
618
619 /* if other pools are present, just remove ourselves */
620 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
621 (bits[VMDQ_P(0) / 32] & pool_mask))
622 goto update_vlvfb;
623
624 /* if PF is present, leave VFTA */
625 if (bits[0] || bits[1])
626 goto update_vlvf;
627
628 /* if we cannot determine VLAN just remove ourselves */
629 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
630 if (!vlvf)
631 goto update_vlvfb;
632
633 vid = vlvf & VLAN_VID_MASK;
634 mask = BIT(vid % 32);
635
636 /* clear bit from VFTA */
637 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
638 if (vfta & mask)
639 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
640update_vlvf:
641 /* clear POOL selection enable */
642 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
643
644 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
645 vlvfb = 0;
646update_vlvfb:
647 /* clear pool bits */
648 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
649 }
650}
651
652static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
653{
654 struct ixgbe_hw *hw = &adapter->hw;
655 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
656 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
657
658 /* remove VLAN filters beloning to this VF */
659 ixgbe_clear_vf_vlans(adapter, vf);
660
661 /* add back PF assigned VLAN or VLAN 0 */
662 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
663
664 /* reset offloads to defaults */
665 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
666
667 /* set outgoing tags for VFs */
668 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
669 ixgbe_clear_vmvir(adapter, vf);
670 } else {
671 if (vfinfo->pf_qos || !num_tcs)
672 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
673 vfinfo->pf_qos, vf);
674 else
675 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
676 adapter->default_up, vf);
677
678 if (vfinfo->spoofchk_enabled)
679 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
680 }
681
682 /* reset multicast table array for vf */
683 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
684
685 /* Flush and reset the mta with the new values */
686 ixgbe_set_rx_mode(adapter->netdev);
687
688 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
689
690 /* reset VF api back to unknown */
691 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
692}
693
694static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
695 int vf, unsigned char *mac_addr)
696{
697 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
698 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
699 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
700
701 return 0;
702}
703
704static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
705 int vf, int index, unsigned char *mac_addr)
706{
707 struct list_head *pos;
708 struct vf_macvlans *entry;
709
710 if (index <= 1) {
711 list_for_each(pos, &adapter->vf_mvs.l) {
712 entry = list_entry(pos, struct vf_macvlans, l);
713 if (entry->vf == vf) {
714 entry->vf = -1;
715 entry->free = true;
716 entry->is_macvlan = false;
717 ixgbe_del_mac_filter(adapter,
718 entry->vf_macvlan, vf);
719 }
720 }
721 }
722
723 /*
724 * If index was zero then we were asked to clear the uc list
725 * for the VF. We're done.
726 */
727 if (!index)
728 return 0;
729
730 entry = NULL;
731
732 list_for_each(pos, &adapter->vf_mvs.l) {
733 entry = list_entry(pos, struct vf_macvlans, l);
734 if (entry->free)
735 break;
736 }
737
738 /*
739 * If we traversed the entire list and didn't find a free entry
740 * then we're out of space on the RAR table. Also entry may
741 * be NULL because the original memory allocation for the list
742 * failed, which is not fatal but does mean we can't support
743 * VF requests for MACVLAN because we couldn't allocate
744 * memory for the list management required.
745 */
746 if (!entry || !entry->free)
747 return -ENOSPC;
748
749 entry->free = false;
750 entry->is_macvlan = true;
751 entry->vf = vf;
752 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
753
754 ixgbe_add_mac_filter(adapter, mac_addr, vf);
755
756 return 0;
757}
758
759int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
760{
761 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
762 unsigned int vfn = (event_mask & 0x3f);
763
764 bool enable = ((event_mask & 0x10000000U) != 0);
765
766 if (enable)
767 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
768
769 return 0;
770}
771
772static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
773 u32 qde)
774{
775 struct ixgbe_hw *hw = &adapter->hw;
776 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
777 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
778 int i;
779
780 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
781 u32 reg;
782
783 /* flush previous write */
784 IXGBE_WRITE_FLUSH(hw);
785
786 /* indicate to hardware that we want to set drop enable */
787 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
788 reg |= i << IXGBE_QDE_IDX_SHIFT;
789 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
790 }
791}
792
793static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
794{
795 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
796 struct ixgbe_hw *hw = &adapter->hw;
797 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
798 u32 reg, reg_offset, vf_shift;
799 u32 msgbuf[4] = {0, 0, 0, 0};
800 u8 *addr = (u8 *)(&msgbuf[1]);
801 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
802 int i;
803
804 e_info(probe, "VF Reset msg received from vf %d\n", vf);
805
806 /* reset the filters for the device */
807 ixgbe_vf_reset_event(adapter, vf);
808
809 /* set vf mac address */
810 if (!is_zero_ether_addr(vf_mac))
811 ixgbe_set_vf_mac(adapter, vf, vf_mac);
812
813 vf_shift = vf % 32;
814 reg_offset = vf / 32;
815
816 /* enable transmit for vf */
817 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
818 reg |= BIT(vf_shift);
819 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
820
821 /* force drop enable for all VF Rx queues */
822 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
823
824 /* enable receive for vf */
825 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
826 reg |= BIT(vf_shift);
827 /*
828 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
829 * For more info take a look at ixgbe_set_vf_lpe
830 */
831 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
832 struct net_device *dev = adapter->netdev;
833 int pf_max_frame = dev->mtu + ETH_HLEN;
834
835#ifdef CONFIG_FCOE
836 if (dev->features & NETIF_F_FCOE_MTU)
837 pf_max_frame = max_t(int, pf_max_frame,
838 IXGBE_FCOE_JUMBO_FRAME_SIZE);
839
840#endif /* CONFIG_FCOE */
841 if (pf_max_frame > ETH_FRAME_LEN)
842 reg &= ~BIT(vf_shift);
843 }
844 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
845
846 /* enable VF mailbox for further messages */
847 adapter->vfinfo[vf].clear_to_send = true;
848
849 /* Enable counting of spoofed packets in the SSVPC register */
850 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
851 reg |= BIT(vf_shift);
852 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
853
854 /*
855 * Reset the VFs TDWBAL and TDWBAH registers
856 * which are not cleared by an FLR
857 */
858 for (i = 0; i < q_per_pool; i++) {
859 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
860 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
861 }
862
863 /* reply to reset with ack and vf mac address */
864 msgbuf[0] = IXGBE_VF_RESET;
865 if (!is_zero_ether_addr(vf_mac)) {
866 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
867 memcpy(addr, vf_mac, ETH_ALEN);
868 } else {
869 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
870 dev_warn(&adapter->pdev->dev,
871 "VF %d has no MAC address assigned, you may have to assign one manually\n",
872 vf);
873 }
874
875 /*
876 * Piggyback the multicast filter type so VF can compute the
877 * correct vectors
878 */
879 msgbuf[3] = hw->mac.mc_filter_type;
880 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
881
882 return 0;
883}
884
885static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
886 u32 *msgbuf, u32 vf)
887{
888 u8 *new_mac = ((u8 *)(&msgbuf[1]));
889
890 if (!is_valid_ether_addr(new_mac)) {
891 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
892 return -1;
893 }
894
895 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
896 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
897 e_warn(drv,
898 "VF %d attempted to override administratively set MAC address\n"
899 "Reload the VF driver to resume operations\n",
900 vf);
901 return -1;
902 }
903
904 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
905}
906
907static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
908 u32 *msgbuf, u32 vf)
909{
910 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
911 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
912 u8 tcs = netdev_get_num_tc(adapter->netdev);
913
914 if (adapter->vfinfo[vf].pf_vlan || tcs) {
915 e_warn(drv,
916 "VF %d attempted to override administratively set VLAN configuration\n"
917 "Reload the VF driver to resume operations\n",
918 vf);
919 return -1;
920 }
921
922 /* VLAN 0 is a special case, don't allow it to be removed */
923 if (!vid && !add)
924 return 0;
925
926 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
927}
928
929static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
930 u32 *msgbuf, u32 vf)
931{
932 u8 *new_mac = ((u8 *)(&msgbuf[1]));
933 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
934 IXGBE_VT_MSGINFO_SHIFT;
935 int err;
936
937 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
938 e_warn(drv,
939 "VF %d requested MACVLAN filter but is administratively denied\n",
940 vf);
941 return -1;
942 }
943
944 /* An non-zero index indicates the VF is setting a filter */
945 if (index) {
946 if (!is_valid_ether_addr(new_mac)) {
947 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
948 return -1;
949 }
950
951 /*
952 * If the VF is allowed to set MAC filters then turn off
953 * anti-spoofing to avoid false positives.
954 */
955 if (adapter->vfinfo[vf].spoofchk_enabled) {
956 struct ixgbe_hw *hw = &adapter->hw;
957
958 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
959 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
960 }
961 }
962
963 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
964 if (err == -ENOSPC)
965 e_warn(drv,
966 "VF %d has requested a MACVLAN filter but there is no space for it\n",
967 vf);
968
969 return err < 0;
970}
971
972static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
973 u32 *msgbuf, u32 vf)
974{
975 int api = msgbuf[1];
976
977 switch (api) {
978 case ixgbe_mbox_api_10:
979 case ixgbe_mbox_api_11:
980 case ixgbe_mbox_api_12:
981 adapter->vfinfo[vf].vf_api = api;
982 return 0;
983 default:
984 break;
985 }
986
987 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
988
989 return -1;
990}
991
992static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
993 u32 *msgbuf, u32 vf)
994{
995 struct net_device *dev = adapter->netdev;
996 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
997 unsigned int default_tc = 0;
998 u8 num_tcs = netdev_get_num_tc(dev);
999
1000 /* verify the PF is supporting the correct APIs */
1001 switch (adapter->vfinfo[vf].vf_api) {
1002 case ixgbe_mbox_api_20:
1003 case ixgbe_mbox_api_11:
1004 case ixgbe_mbox_api_12:
1005 break;
1006 default:
1007 return -1;
1008 }
1009
1010 /* only allow 1 Tx queue for bandwidth limiting */
1011 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1012 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1013
1014 /* if TCs > 1 determine which TC belongs to default user priority */
1015 if (num_tcs > 1)
1016 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1017
1018 /* notify VF of need for VLAN tag stripping, and correct queue */
1019 if (num_tcs)
1020 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1021 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1022 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1023 else
1024 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1025
1026 /* notify VF of default queue */
1027 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1028
1029 return 0;
1030}
1031
1032static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1033{
1034 u32 i, j;
1035 u32 *out_buf = &msgbuf[1];
1036 const u8 *reta = adapter->rss_indir_tbl;
1037 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1038
1039 /* Check if operation is permitted */
1040 if (!adapter->vfinfo[vf].rss_query_enabled)
1041 return -EPERM;
1042
1043 /* verify the PF is supporting the correct API */
1044 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1045 return -EOPNOTSUPP;
1046
1047 /* This mailbox command is supported (required) only for 82599 and x540
1048 * VFs which support up to 4 RSS queues. Therefore we will compress the
1049 * RETA by saving only 2 bits from each entry. This way we will be able
1050 * to transfer the whole RETA in a single mailbox operation.
1051 */
1052 for (i = 0; i < reta_size / 16; i++) {
1053 out_buf[i] = 0;
1054 for (j = 0; j < 16; j++)
1055 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1056 }
1057
1058 return 0;
1059}
1060
1061static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1062 u32 *msgbuf, u32 vf)
1063{
1064 u32 *rss_key = &msgbuf[1];
1065
1066 /* Check if the operation is permitted */
1067 if (!adapter->vfinfo[vf].rss_query_enabled)
1068 return -EPERM;
1069
1070 /* verify the PF is supporting the correct API */
1071 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1072 return -EOPNOTSUPP;
1073
1074 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key));
1075
1076 return 0;
1077}
1078
1079static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1080 u32 *msgbuf, u32 vf)
1081{
1082 struct ixgbe_hw *hw = &adapter->hw;
1083 int xcast_mode = msgbuf[1];
1084 u32 vmolr, disable, enable;
1085
1086 /* verify the PF is supporting the correct APIs */
1087 switch (adapter->vfinfo[vf].vf_api) {
1088 case ixgbe_mbox_api_12:
1089 break;
1090 default:
1091 return -EOPNOTSUPP;
1092 }
1093
1094 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1095 !adapter->vfinfo[vf].trusted) {
1096 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1097 }
1098
1099 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1100 goto out;
1101
1102 switch (xcast_mode) {
1103 case IXGBEVF_XCAST_MODE_NONE:
1104 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1105 enable = 0;
1106 break;
1107 case IXGBEVF_XCAST_MODE_MULTI:
1108 disable = IXGBE_VMOLR_MPE;
1109 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1110 break;
1111 case IXGBEVF_XCAST_MODE_ALLMULTI:
1112 disable = 0;
1113 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1114 break;
1115 default:
1116 return -EOPNOTSUPP;
1117 }
1118
1119 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1120 vmolr &= ~disable;
1121 vmolr |= enable;
1122 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1123
1124 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1125
1126out:
1127 msgbuf[1] = xcast_mode;
1128
1129 return 0;
1130}
1131
1132static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1133{
1134 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1135 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1136 struct ixgbe_hw *hw = &adapter->hw;
1137 s32 retval;
1138
1139 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1140
1141 if (retval) {
1142 pr_err("Error receiving message from VF\n");
1143 return retval;
1144 }
1145
1146 /* this is a message we already processed, do nothing */
1147 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1148 return 0;
1149
1150 /* flush the ack before we write any messages back */
1151 IXGBE_WRITE_FLUSH(hw);
1152
1153 if (msgbuf[0] == IXGBE_VF_RESET)
1154 return ixgbe_vf_reset_msg(adapter, vf);
1155
1156 /*
1157 * until the vf completes a virtual function reset it should not be
1158 * allowed to start any configuration.
1159 */
1160 if (!adapter->vfinfo[vf].clear_to_send) {
1161 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1162 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1163 return 0;
1164 }
1165
1166 switch ((msgbuf[0] & 0xFFFF)) {
1167 case IXGBE_VF_SET_MAC_ADDR:
1168 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1169 break;
1170 case IXGBE_VF_SET_MULTICAST:
1171 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1172 break;
1173 case IXGBE_VF_SET_VLAN:
1174 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1175 break;
1176 case IXGBE_VF_SET_LPE:
1177 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1178 break;
1179 case IXGBE_VF_SET_MACVLAN:
1180 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1181 break;
1182 case IXGBE_VF_API_NEGOTIATE:
1183 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1184 break;
1185 case IXGBE_VF_GET_QUEUES:
1186 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1187 break;
1188 case IXGBE_VF_GET_RETA:
1189 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1190 break;
1191 case IXGBE_VF_GET_RSS_KEY:
1192 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1193 break;
1194 case IXGBE_VF_UPDATE_XCAST_MODE:
1195 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1196 break;
1197 default:
1198 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1199 retval = IXGBE_ERR_MBX;
1200 break;
1201 }
1202
1203 /* notify the VF of the results of what it sent us */
1204 if (retval)
1205 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1206 else
1207 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1208
1209 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1210
1211 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1212
1213 return retval;
1214}
1215
1216static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1217{
1218 struct ixgbe_hw *hw = &adapter->hw;
1219 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1220
1221 /* if device isn't clear to send it shouldn't be reading either */
1222 if (!adapter->vfinfo[vf].clear_to_send)
1223 ixgbe_write_mbx(hw, &msg, 1, vf);
1224}
1225
1226void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1227{
1228 struct ixgbe_hw *hw = &adapter->hw;
1229 u32 vf;
1230
1231 for (vf = 0; vf < adapter->num_vfs; vf++) {
1232 /* process any reset requests */
1233 if (!ixgbe_check_for_rst(hw, vf))
1234 ixgbe_vf_reset_event(adapter, vf);
1235
1236 /* process any messages pending */
1237 if (!ixgbe_check_for_msg(hw, vf))
1238 ixgbe_rcv_msg_from_vf(adapter, vf);
1239
1240 /* process any acks */
1241 if (!ixgbe_check_for_ack(hw, vf))
1242 ixgbe_rcv_ack_from_vf(adapter, vf);
1243 }
1244}
1245
1246void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1247{
1248 struct ixgbe_hw *hw = &adapter->hw;
1249
1250 /* disable transmit and receive for all vfs */
1251 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1252 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1253
1254 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1255 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1256}
1257
1258static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1259{
1260 struct ixgbe_hw *hw = &adapter->hw;
1261 u32 ping;
1262
1263 ping = IXGBE_PF_CONTROL_MSG;
1264 if (adapter->vfinfo[vf].clear_to_send)
1265 ping |= IXGBE_VT_MSGTYPE_CTS;
1266 ixgbe_write_mbx(hw, &ping, 1, vf);
1267}
1268
1269void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1270{
1271 struct ixgbe_hw *hw = &adapter->hw;
1272 u32 ping;
1273 int i;
1274
1275 for (i = 0 ; i < adapter->num_vfs; i++) {
1276 ping = IXGBE_PF_CONTROL_MSG;
1277 if (adapter->vfinfo[i].clear_to_send)
1278 ping |= IXGBE_VT_MSGTYPE_CTS;
1279 ixgbe_write_mbx(hw, &ping, 1, i);
1280 }
1281}
1282
1283int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1284{
1285 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1286 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1287 return -EINVAL;
1288 adapter->vfinfo[vf].pf_set_mac = true;
1289 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1290 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1291 " change effective.");
1292 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1293 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1294 " but the PF device is not up.\n");
1295 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1296 " attempting to use the VF device.\n");
1297 }
1298 return ixgbe_set_vf_mac(adapter, vf, mac);
1299}
1300
1301static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1302 u16 vlan, u8 qos)
1303{
1304 struct ixgbe_hw *hw = &adapter->hw;
1305 int err;
1306
1307 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1308 if (err)
1309 goto out;
1310
1311 /* Revoke tagless access via VLAN 0 */
1312 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1313
1314 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1315 ixgbe_set_vmolr(hw, vf, false);
1316
1317 /* enable hide vlan on X550 */
1318 if (hw->mac.type >= ixgbe_mac_X550)
1319 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1320 IXGBE_QDE_HIDE_VLAN);
1321
1322 adapter->vfinfo[vf].pf_vlan = vlan;
1323 adapter->vfinfo[vf].pf_qos = qos;
1324 dev_info(&adapter->pdev->dev,
1325 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1326 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1327 dev_warn(&adapter->pdev->dev,
1328 "The VF VLAN has been set, but the PF device is not up.\n");
1329 dev_warn(&adapter->pdev->dev,
1330 "Bring the PF device up before attempting to use the VF device.\n");
1331 }
1332
1333out:
1334 return err;
1335}
1336
1337static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1338{
1339 struct ixgbe_hw *hw = &adapter->hw;
1340 int err;
1341
1342 err = ixgbe_set_vf_vlan(adapter, false,
1343 adapter->vfinfo[vf].pf_vlan, vf);
1344 /* Restore tagless access via VLAN 0 */
1345 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1346 ixgbe_clear_vmvir(adapter, vf);
1347 ixgbe_set_vmolr(hw, vf, true);
1348
1349 /* disable hide VLAN on X550 */
1350 if (hw->mac.type >= ixgbe_mac_X550)
1351 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1352
1353 adapter->vfinfo[vf].pf_vlan = 0;
1354 adapter->vfinfo[vf].pf_qos = 0;
1355
1356 return err;
1357}
1358
1359int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1360 u8 qos, __be16 vlan_proto)
1361{
1362 int err = 0;
1363 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1364
1365 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1366 return -EINVAL;
1367 if (vlan_proto != htons(ETH_P_8021Q))
1368 return -EPROTONOSUPPORT;
1369 if (vlan || qos) {
1370 /* Check if there is already a port VLAN set, if so
1371 * we have to delete the old one first before we
1372 * can set the new one. The usage model had
1373 * previously assumed the user would delete the
1374 * old port VLAN before setting a new one but this
1375 * is not necessarily the case.
1376 */
1377 if (adapter->vfinfo[vf].pf_vlan)
1378 err = ixgbe_disable_port_vlan(adapter, vf);
1379 if (err)
1380 goto out;
1381 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1382 } else {
1383 err = ixgbe_disable_port_vlan(adapter, vf);
1384 }
1385
1386out:
1387 return err;
1388}
1389
1390int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1391{
1392 switch (adapter->link_speed) {
1393 case IXGBE_LINK_SPEED_100_FULL:
1394 return 100;
1395 case IXGBE_LINK_SPEED_1GB_FULL:
1396 return 1000;
1397 case IXGBE_LINK_SPEED_10GB_FULL:
1398 return 10000;
1399 default:
1400 return 0;
1401 }
1402}
1403
1404static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1405{
1406 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1407 struct ixgbe_hw *hw = &adapter->hw;
1408 u32 bcnrc_val = 0;
1409 u16 queue, queues_per_pool;
1410 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1411
1412 if (tx_rate) {
1413 /* start with base link speed value */
1414 bcnrc_val = adapter->vf_rate_link_speed;
1415
1416 /* Calculate the rate factor values to set */
1417 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1418 bcnrc_val /= tx_rate;
1419
1420 /* clear everything but the rate factor */
1421 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1422 IXGBE_RTTBCNRC_RF_DEC_MASK;
1423
1424 /* enable the rate scheduler */
1425 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1426 }
1427
1428 /*
1429 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1430 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1431 * and 0x004 otherwise.
1432 */
1433 switch (hw->mac.type) {
1434 case ixgbe_mac_82599EB:
1435 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1436 break;
1437 case ixgbe_mac_X540:
1438 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1439 break;
1440 default:
1441 break;
1442 }
1443
1444 /* determine how many queues per pool based on VMDq mask */
1445 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1446
1447 /* write value for all Tx queues belonging to VF */
1448 for (queue = 0; queue < queues_per_pool; queue++) {
1449 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1450
1451 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1452 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1453 }
1454}
1455
1456void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1457{
1458 int i;
1459
1460 /* VF Tx rate limit was not set */
1461 if (!adapter->vf_rate_link_speed)
1462 return;
1463
1464 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1465 adapter->vf_rate_link_speed = 0;
1466 dev_info(&adapter->pdev->dev,
1467 "Link speed has been changed. VF Transmit rate is disabled\n");
1468 }
1469
1470 for (i = 0; i < adapter->num_vfs; i++) {
1471 if (!adapter->vf_rate_link_speed)
1472 adapter->vfinfo[i].tx_rate = 0;
1473
1474 ixgbe_set_vf_rate_limit(adapter, i);
1475 }
1476}
1477
1478int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1479 int max_tx_rate)
1480{
1481 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1482 int link_speed;
1483
1484 /* verify VF is active */
1485 if (vf >= adapter->num_vfs)
1486 return -EINVAL;
1487
1488 /* verify link is up */
1489 if (!adapter->link_up)
1490 return -EINVAL;
1491
1492 /* verify we are linked at 10Gbps */
1493 link_speed = ixgbe_link_mbps(adapter);
1494 if (link_speed != 10000)
1495 return -EINVAL;
1496
1497 if (min_tx_rate)
1498 return -EINVAL;
1499
1500 /* rate limit cannot be less than 10Mbs or greater than link speed */
1501 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1502 return -EINVAL;
1503
1504 /* store values */
1505 adapter->vf_rate_link_speed = link_speed;
1506 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1507
1508 /* update hardware configuration */
1509 ixgbe_set_vf_rate_limit(adapter, vf);
1510
1511 return 0;
1512}
1513
1514int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1515{
1516 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1517 struct ixgbe_hw *hw = &adapter->hw;
1518
1519 if (vf >= adapter->num_vfs)
1520 return -EINVAL;
1521
1522 adapter->vfinfo[vf].spoofchk_enabled = setting;
1523
1524 /* configure MAC spoofing */
1525 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1526
1527 /* configure VLAN spoofing */
1528 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1529
1530 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1531 * calling set_ethertype_anti_spoofing for each VF in loop below
1532 */
1533 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1534 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1535 (IXGBE_ETQF_FILTER_EN |
1536 IXGBE_ETQF_TX_ANTISPOOF |
1537 IXGBE_ETH_P_LLDP));
1538
1539 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1540 (IXGBE_ETQF_FILTER_EN |
1541 IXGBE_ETQF_TX_ANTISPOOF |
1542 ETH_P_PAUSE));
1543
1544 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1545 }
1546
1547 return 0;
1548}
1549
1550int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1551 bool setting)
1552{
1553 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1554
1555 /* This operation is currently supported only for 82599 and x540
1556 * devices.
1557 */
1558 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1559 adapter->hw.mac.type >= ixgbe_mac_X550)
1560 return -EOPNOTSUPP;
1561
1562 if (vf >= adapter->num_vfs)
1563 return -EINVAL;
1564
1565 adapter->vfinfo[vf].rss_query_enabled = setting;
1566
1567 return 0;
1568}
1569
1570int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1571{
1572 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1573
1574 if (vf >= adapter->num_vfs)
1575 return -EINVAL;
1576
1577 /* nothing to do */
1578 if (adapter->vfinfo[vf].trusted == setting)
1579 return 0;
1580
1581 adapter->vfinfo[vf].trusted = setting;
1582
1583 /* reset VF to reconfigure features */
1584 adapter->vfinfo[vf].clear_to_send = false;
1585 ixgbe_ping_vf(adapter, vf);
1586
1587 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1588
1589 return 0;
1590}
1591
1592int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1593 int vf, struct ifla_vf_info *ivi)
1594{
1595 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1596 if (vf >= adapter->num_vfs)
1597 return -EINVAL;
1598 ivi->vf = vf;
1599 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1600 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1601 ivi->min_tx_rate = 0;
1602 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1603 ivi->qos = adapter->vfinfo[vf].pf_qos;
1604 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1605 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1606 ivi->trusted = adapter->vfinfo[vf].trusted;
1607 return 0;
1608}