?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ixgbe: Fix race when the VF driver does a reset
[linux/fpc-iii.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blobf6ffd9fb2079376fd7695bb738078c70445772fa
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
24 static 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 num_vf_macvlans = hw->mac.num_rar_entries -
32 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
33 if (!num_vf_macvlans)
34 return;
35
36 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
37 GFP_KERNEL);
38 if (mv_list) {
39 /* Initialize list of VF macvlans */
40 INIT_LIST_HEAD(&adapter->vf_mvs.l);
41 for (i = 0; i < num_vf_macvlans; i++) {
42 mv_list[i].vf = -1;
43 mv_list[i].free = true;
44 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
45 }
46 adapter->mv_list = mv_list;
47 }
48 }
49
50 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
51 unsigned int num_vfs)
52 {
53 struct ixgbe_hw *hw = &adapter->hw;
54 int i;
55
56 if (adapter->xdp_prog) {
57 e_warn(probe, "SRIOV is not supported with XDP\n");
58 return -EINVAL;
59 }
60
61 /* Enable VMDq flag so device will be set in VM mode */
62 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
63 IXGBE_FLAG_VMDQ_ENABLED;
64
65 /* Allocate memory for per VF control structures */
66 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
67 GFP_KERNEL);
68 if (!adapter->vfinfo)
69 return -ENOMEM;
70
71 adapter->num_vfs = num_vfs;
72
73 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
74 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
75
76 /* Initialize default switching mode VEB */
77 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
78 adapter->bridge_mode = BRIDGE_MODE_VEB;
79
80 /* limit trafffic classes based on VFs enabled */
81 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
82 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
83 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
84 } else if (num_vfs < 32) {
85 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
86 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
87 } else {
88 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
89 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
90 }
91
92 /* Disable RSC when in SR-IOV mode */
93 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
94 IXGBE_FLAG2_RSC_ENABLED);
95
96 for (i = 0; i < num_vfs; i++) {
97 /* enable spoof checking for all VFs */
98 adapter->vfinfo[i].spoofchk_enabled = true;
99
100 /* We support VF RSS querying only for 82599 and x540
101 * devices at the moment. These devices share RSS
102 * indirection table and RSS hash key with PF therefore
103 * we want to disable the querying by default.
104 */
105 adapter->vfinfo[i].rss_query_enabled = 0;
106
107 /* Untrust all VFs */
108 adapter->vfinfo[i].trusted = false;
109
110 /* set the default xcast mode */
111 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
112 }
113
114 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
115 return 0;
116 }
117
118 /**
119 * ixgbe_get_vfs - Find and take references to all vf devices
120 * @adapter: Pointer to adapter struct
121 */
122 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
123 {
124 struct pci_dev *pdev = adapter->pdev;
125 u16 vendor = pdev->vendor;
126 struct pci_dev *vfdev;
127 int vf = 0;
128 u16 vf_id;
129 int pos;
130
131 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
132 if (!pos)
133 return;
134 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
135
136 vfdev = pci_get_device(vendor, vf_id, NULL);
137 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
138 if (!vfdev->is_virtfn)
139 continue;
140 if (vfdev->physfn != pdev)
141 continue;
142 if (vf >= adapter->num_vfs)
143 continue;
144 pci_dev_get(vfdev);
145 adapter->vfinfo[vf].vfdev = vfdev;
146 ++vf;
147 }
148 }
149
150 /* Note this function is called when the user wants to enable SR-IOV
151 * VFs using the now deprecated module parameter
152 */
153 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
154 {
155 int pre_existing_vfs = 0;
156 unsigned int num_vfs;
157
158 pre_existing_vfs = pci_num_vf(adapter->pdev);
159 if (!pre_existing_vfs && !max_vfs)
160 return;
161
162 /* If there are pre-existing VFs then we have to force
163 * use of that many - over ride any module parameter value.
164 * This may result from the user unloading the PF driver
165 * while VFs were assigned to guest VMs or because the VFs
166 * have been created via the new PCI SR-IOV sysfs interface.
167 */
168 if (pre_existing_vfs) {
169 num_vfs = pre_existing_vfs;
170 dev_warn(&adapter->pdev->dev,
171 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
172 } else {
173 int err;
174 /*
175 * The 82599 supports up to 64 VFs per physical function
176 * but this implementation limits allocation to 63 so that
177 * basic networking resources are still available to the
178 * physical function. If the user requests greater than
179 * 63 VFs then it is an error - reset to default of zero.
180 */
181 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
182
183 err = pci_enable_sriov(adapter->pdev, num_vfs);
184 if (err) {
185 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
186 return;
187 }
188 }
189
190 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
191 ixgbe_get_vfs(adapter);
192 return;
193 }
194
195 /* If we have gotten to this point then there is no memory available
196 * to manage the VF devices - print message and bail.
197 */
198 e_err(probe, "Unable to allocate memory for VF Data Storage - "
199 "SRIOV disabled\n");
200 ixgbe_disable_sriov(adapter);
201 }
202
203 #endif /* #ifdef CONFIG_PCI_IOV */
204 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
205 {
206 unsigned int num_vfs = adapter->num_vfs, vf;
207 int rss;
208
209 /* set num VFs to 0 to prevent access to vfinfo */
210 adapter->num_vfs = 0;
211
212 /* put the reference to all of the vf devices */
213 for (vf = 0; vf < num_vfs; ++vf) {
214 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
215
216 if (!vfdev)
217 continue;
218 adapter->vfinfo[vf].vfdev = NULL;
219 pci_dev_put(vfdev);
220 }
221
222 /* free VF control structures */
223 kfree(adapter->vfinfo);
224 adapter->vfinfo = NULL;
225
226 /* free macvlan list */
227 kfree(adapter->mv_list);
228 adapter->mv_list = NULL;
229
230 /* if SR-IOV is already disabled then there is nothing to do */
231 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
232 return 0;
233
234 #ifdef CONFIG_PCI_IOV
235 /*
236 * If our VFs are assigned we cannot shut down SR-IOV
237 * without causing issues, so just leave the hardware
238 * available but disabled
239 */
240 if (pci_vfs_assigned(adapter->pdev)) {
241 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
242 return -EPERM;
243 }
244 /* disable iov and allow time for transactions to clear */
245 pci_disable_sriov(adapter->pdev);
246 #endif
247
248 /* Disable VMDq flag so device will be set in VM mode */
249 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
250 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
251 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
252 rss = min_t(int, ixgbe_max_rss_indices(adapter),
253 num_online_cpus());
254 } else {
255 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
256 }
257
258 adapter->ring_feature[RING_F_VMDQ].offset = 0;
259 adapter->ring_feature[RING_F_RSS].limit = rss;
260
261 /* take a breather then clean up driver data */
262 msleep(100);
263 return 0;
264 }
265
266 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
267 {
268 #ifdef CONFIG_PCI_IOV
269 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
270 int pre_existing_vfs = pci_num_vf(dev);
271 int err = 0, num_rx_pools, i, limit;
272 u8 num_tc;
273
274 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
275 err = ixgbe_disable_sriov(adapter);
276 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
277 return num_vfs;
278
279 if (err)
280 return err;
281
282 /* While the SR-IOV capability structure reports total VFs to be 64,
283 * we limit the actual number allocated as below based on two factors.
284 * Num_TCs MAX_VFs
285 * 1 63
286 * <=4 31
287 * >4 15
288 * First, we reserve some transmit/receive resources for the PF.
289 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
290 * account for this, so that we don't accidentally allocate more VFs
291 * than we have available pools. The PCI bus driver already checks for
292 * other values out of range.
293 */
294 num_tc = adapter->hw_tcs;
295 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
296 adapter->num_rx_pools);
297 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
298 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
299
300 if (num_vfs > (limit - num_rx_pools)) {
301 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
302 num_tc, num_rx_pools - 1, limit - num_rx_pools);
303 return -EPERM;
304 }
305
306 err = __ixgbe_enable_sriov(adapter, num_vfs);
307 if (err)
308 return err;
309
310 for (i = 0; i < num_vfs; i++)
311 ixgbe_vf_configuration(dev, (i | 0x10000000));
312
313 /* reset before enabling SRIOV to avoid mailbox issues */
314 ixgbe_sriov_reinit(adapter);
315
316 err = pci_enable_sriov(dev, num_vfs);
317 if (err) {
318 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
319 return err;
320 }
321 ixgbe_get_vfs(adapter);
322
323 return num_vfs;
324 #else
325 return 0;
326 #endif
327 }
328
329 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
330 {
331 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
332 int err;
333 #ifdef CONFIG_PCI_IOV
334 u32 current_flags = adapter->flags;
335 int prev_num_vf = pci_num_vf(dev);
336 #endif
337
338 err = ixgbe_disable_sriov(adapter);
339
340 /* Only reinit if no error and state changed */
341 #ifdef CONFIG_PCI_IOV
342 if (!err && (current_flags != adapter->flags ||
343 prev_num_vf != pci_num_vf(dev)))
344 ixgbe_sriov_reinit(adapter);
345 #endif
346
347 return err;
348 }
349
350 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
351 {
352 if (num_vfs == 0)
353 return ixgbe_pci_sriov_disable(dev);
354 else
355 return ixgbe_pci_sriov_enable(dev, num_vfs);
356 }
357
358 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
359 u32 *msgbuf, u32 vf)
360 {
361 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
362 >> IXGBE_VT_MSGINFO_SHIFT;
363 u16 *hash_list = (u16 *)&msgbuf[1];
364 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
365 struct ixgbe_hw *hw = &adapter->hw;
366 int i;
367 u32 vector_bit;
368 u32 vector_reg;
369 u32 mta_reg;
370 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
371
372 /* only so many hash values supported */
373 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
374
375 /*
376 * salt away the number of multi cast addresses assigned
377 * to this VF for later use to restore when the PF multi cast
378 * list changes
379 */
380 vfinfo->num_vf_mc_hashes = entries;
381
382 /*
383 * VFs are limited to using the MTA hash table for their multicast
384 * addresses
385 */
386 for (i = 0; i < entries; i++) {
387 vfinfo->vf_mc_hashes[i] = hash_list[i];
388 }
389
390 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
391 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
392 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
393 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
394 mta_reg |= BIT(vector_bit);
395 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
396 }
397 vmolr |= IXGBE_VMOLR_ROMPE;
398 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
399
400 return 0;
401 }
402
403 #ifdef CONFIG_PCI_IOV
404 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
405 {
406 struct ixgbe_hw *hw = &adapter->hw;
407 struct vf_data_storage *vfinfo;
408 int i, j;
409 u32 vector_bit;
410 u32 vector_reg;
411 u32 mta_reg;
412
413 for (i = 0; i < adapter->num_vfs; i++) {
414 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
415 vfinfo = &adapter->vfinfo[i];
416 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
417 hw->addr_ctrl.mta_in_use++;
418 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
419 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
420 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
421 mta_reg |= BIT(vector_bit);
422 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
423 }
424
425 if (vfinfo->num_vf_mc_hashes)
426 vmolr |= IXGBE_VMOLR_ROMPE;
427 else
428 vmolr &= ~IXGBE_VMOLR_ROMPE;
429 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
430 }
431
432 /* Restore any VF macvlans */
433 ixgbe_full_sync_mac_table(adapter);
434 }
435 #endif
436
437 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
438 u32 vf)
439 {
440 struct ixgbe_hw *hw = &adapter->hw;
441 int err;
442
443 /* If VLAN overlaps with one the PF is currently monitoring make
444 * sure that we are able to allocate a VLVF entry. This may be
445 * redundant but it guarantees PF will maintain visibility to
446 * the VLAN.
447 */
448 if (add && test_bit(vid, adapter->active_vlans)) {
449 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
450 if (err)
451 return err;
452 }
453
454 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
455
456 if (add && !err)
457 return err;
458
459 /* If we failed to add the VF VLAN or we are removing the VF VLAN
460 * we may need to drop the PF pool bit in order to allow us to free
461 * up the VLVF resources.
462 */
463 if (test_bit(vid, adapter->active_vlans) ||
464 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
465 ixgbe_update_pf_promisc_vlvf(adapter, vid);
466
467 return err;
468 }
469
470 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
471 {
472 struct ixgbe_hw *hw = &adapter->hw;
473 int max_frame = msgbuf[1];
474 u32 max_frs;
475
476 /*
477 * For 82599EB we have to keep all PFs and VFs operating with
478 * the same max_frame value in order to avoid sending an oversize
479 * frame to a VF. In order to guarantee this is handled correctly
480 * for all cases we have several special exceptions to take into
481 * account before we can enable the VF for receive
482 */
483 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
484 struct net_device *dev = adapter->netdev;
485 int pf_max_frame = dev->mtu + ETH_HLEN;
486 u32 reg_offset, vf_shift, vfre;
487 s32 err = 0;
488
489 #ifdef CONFIG_FCOE
490 if (dev->features & NETIF_F_FCOE_MTU)
491 pf_max_frame = max_t(int, pf_max_frame,
492 IXGBE_FCOE_JUMBO_FRAME_SIZE);
493
494 #endif /* CONFIG_FCOE */
495 switch (adapter->vfinfo[vf].vf_api) {
496 case ixgbe_mbox_api_11:
497 case ixgbe_mbox_api_12:
498 case ixgbe_mbox_api_13:
499 /* Version 1.1 supports jumbo frames on VFs if PF has
500 * jumbo frames enabled which means legacy VFs are
501 * disabled
502 */
503 if (pf_max_frame > ETH_FRAME_LEN)
504 break;
505 /* fall through */
506 default:
507 /* If the PF or VF are running w/ jumbo frames enabled
508 * we need to shut down the VF Rx path as we cannot
509 * support jumbo frames on legacy VFs
510 */
511 if ((pf_max_frame > ETH_FRAME_LEN) ||
512 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
513 err = -EINVAL;
514 break;
515 }
516
517 /* determine VF receive enable location */
518 vf_shift = vf % 32;
519 reg_offset = vf / 32;
520
521 /* enable or disable receive depending on error */
522 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
523 if (err)
524 vfre &= ~BIT(vf_shift);
525 else
526 vfre |= BIT(vf_shift);
527 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
528
529 if (err) {
530 e_err(drv, "VF max_frame %d out of range\n", max_frame);
531 return err;
532 }
533 }
534
535 /* MTU < 68 is an error and causes problems on some kernels */
536 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
537 e_err(drv, "VF max_frame %d out of range\n", max_frame);
538 return -EINVAL;
539 }
540
541 /* pull current max frame size from hardware */
542 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
543 max_frs &= IXGBE_MHADD_MFS_MASK;
544 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
545
546 if (max_frs < max_frame) {
547 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
548 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
549 }
550
551 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
552
553 return 0;
554 }
555
556 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
557 {
558 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
559 vmolr |= IXGBE_VMOLR_BAM;
560 if (aupe)
561 vmolr |= IXGBE_VMOLR_AUPE;
562 else
563 vmolr &= ~IXGBE_VMOLR_AUPE;
564 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
565 }
566
567 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
568 {
569 struct ixgbe_hw *hw = &adapter->hw;
570
571 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
572 }
573
574 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
575 {
576 struct ixgbe_hw *hw = &adapter->hw;
577 u32 vlvfb_mask, pool_mask, i;
578
579 /* create mask for VF and other pools */
580 pool_mask = ~BIT(VMDQ_P(0) % 32);
581 vlvfb_mask = BIT(vf % 32);
582
583 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
584 for (i = IXGBE_VLVF_ENTRIES; i--;) {
585 u32 bits[2], vlvfb, vid, vfta, vlvf;
586 u32 word = i * 2 + vf / 32;
587 u32 mask;
588
589 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
590
591 /* if our bit isn't set we can skip it */
592 if (!(vlvfb & vlvfb_mask))
593 continue;
594
595 /* clear our bit from vlvfb */
596 vlvfb ^= vlvfb_mask;
597
598 /* create 64b mask to chedk to see if we should clear VLVF */
599 bits[word % 2] = vlvfb;
600 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
601
602 /* if other pools are present, just remove ourselves */
603 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
604 (bits[VMDQ_P(0) / 32] & pool_mask))
605 goto update_vlvfb;
606
607 /* if PF is present, leave VFTA */
608 if (bits[0] || bits[1])
609 goto update_vlvf;
610
611 /* if we cannot determine VLAN just remove ourselves */
612 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
613 if (!vlvf)
614 goto update_vlvfb;
615
616 vid = vlvf & VLAN_VID_MASK;
617 mask = BIT(vid % 32);
618
619 /* clear bit from VFTA */
620 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
621 if (vfta & mask)
622 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
623 update_vlvf:
624 /* clear POOL selection enable */
625 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
626
627 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
628 vlvfb = 0;
629 update_vlvfb:
630 /* clear pool bits */
631 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
632 }
633 }
634
635 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
636 int vf, int index, unsigned char *mac_addr)
637 {
638 struct vf_macvlans *entry;
639 struct list_head *pos;
640 int retval = 0;
641
642 if (index <= 1) {
643 list_for_each(pos, &adapter->vf_mvs.l) {
644 entry = list_entry(pos, struct vf_macvlans, l);
645 if (entry->vf == vf) {
646 entry->vf = -1;
647 entry->free = true;
648 entry->is_macvlan = false;
649 ixgbe_del_mac_filter(adapter,
650 entry->vf_macvlan, vf);
651 }
652 }
653 }
654
655 /*
656 * If index was zero then we were asked to clear the uc list
657 * for the VF. We're done.
658 */
659 if (!index)
660 return 0;
661
662 entry = NULL;
663
664 list_for_each(pos, &adapter->vf_mvs.l) {
665 entry = list_entry(pos, struct vf_macvlans, l);
666 if (entry->free)
667 break;
668 }
669
670 /*
671 * If we traversed the entire list and didn't find a free entry
672 * then we're out of space on the RAR table. Also entry may
673 * be NULL because the original memory allocation for the list
674 * failed, which is not fatal but does mean we can't support
675 * VF requests for MACVLAN because we couldn't allocate
676 * memory for the list management required.
677 */
678 if (!entry || !entry->free)
679 return -ENOSPC;
680
681 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
682 if (retval < 0)
683 return retval;
684
685 entry->free = false;
686 entry->is_macvlan = true;
687 entry->vf = vf;
688 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
689
690 return 0;
691 }
692
693 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
694 {
695 struct ixgbe_hw *hw = &adapter->hw;
696 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
697 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
698 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
699 u8 num_tcs = adapter->hw_tcs;
700 u32 reg_val;
701 u32 queue;
702
703 /* remove VLAN filters beloning to this VF */
704 ixgbe_clear_vf_vlans(adapter, vf);
705
706 /* add back PF assigned VLAN or VLAN 0 */
707 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
708
709 /* reset offloads to defaults */
710 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
711
712 /* set outgoing tags for VFs */
713 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
714 ixgbe_clear_vmvir(adapter, vf);
715 } else {
716 if (vfinfo->pf_qos || !num_tcs)
717 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
718 vfinfo->pf_qos, vf);
719 else
720 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
721 adapter->default_up, vf);
722
723 if (vfinfo->spoofchk_enabled) {
724 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
725 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
726 }
727 }
728
729 /* reset multicast table array for vf */
730 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
731
732 /* Flush and reset the mta with the new values */
733 ixgbe_set_rx_mode(adapter->netdev);
734
735 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
736 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
737
738 /* reset VF api back to unknown */
739 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
740
741 /* Restart each queue for given VF */
742 for (queue = 0; queue < q_per_pool; queue++) {
743 unsigned int reg_idx = (vf * q_per_pool) + queue;
744
745 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
746
747 /* Re-enabling only configured queues */
748 if (reg_val) {
749 reg_val |= IXGBE_TXDCTL_ENABLE;
750 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
751 reg_val &= ~IXGBE_TXDCTL_ENABLE;
752 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
753 }
754 }
755
756 IXGBE_WRITE_FLUSH(hw);
757 }
758
759 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
760 {
761 struct ixgbe_hw *hw = &adapter->hw;
762 u32 word;
763
764 /* Clear VF's mailbox memory */
765 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
766 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
767
768 IXGBE_WRITE_FLUSH(hw);
769 }
770
771 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
772 int vf, unsigned char *mac_addr)
773 {
774 s32 retval;
775
776 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
777 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
778 if (retval >= 0)
779 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
780 ETH_ALEN);
781 else
782 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN);
783
784 return retval;
785 }
786
787 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
788 {
789 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
790 unsigned int vfn = (event_mask & 0x3f);
791
792 bool enable = ((event_mask & 0x10000000U) != 0);
793
794 if (enable)
795 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
796
797 return 0;
798 }
799
800 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
801 u32 qde)
802 {
803 struct ixgbe_hw *hw = &adapter->hw;
804 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
805 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
806 int i;
807
808 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
809 u32 reg;
810
811 /* flush previous write */
812 IXGBE_WRITE_FLUSH(hw);
813
814 /* indicate to hardware that we want to set drop enable */
815 reg = IXGBE_QDE_WRITE | qde;
816 reg |= i << IXGBE_QDE_IDX_SHIFT;
817 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
818 }
819 }
820
821 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
822 {
823 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
824 struct ixgbe_hw *hw = &adapter->hw;
825 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
826 u32 reg, reg_offset, vf_shift;
827 u32 msgbuf[4] = {0, 0, 0, 0};
828 u8 *addr = (u8 *)(&msgbuf[1]);
829 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
830 int i;
831
832 e_info(probe, "VF Reset msg received from vf %d\n", vf);
833
834 /* reset the filters for the device */
835 ixgbe_vf_reset_event(adapter, vf);
836
837 ixgbe_vf_clear_mbx(adapter, vf);
838
839 /* set vf mac address */
840 if (!is_zero_ether_addr(vf_mac))
841 ixgbe_set_vf_mac(adapter, vf, vf_mac);
842
843 vf_shift = vf % 32;
844 reg_offset = vf / 32;
845
846 /* enable transmit for vf */
847 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
848 reg |= BIT(vf_shift);
849 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
850
851 /* force drop enable for all VF Rx queues */
852 reg = IXGBE_QDE_ENABLE;
853 if (adapter->vfinfo[vf].pf_vlan)
854 reg |= IXGBE_QDE_HIDE_VLAN;
855
856 ixgbe_write_qde(adapter, vf, reg);
857
858 /* enable receive for vf */
859 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
860 reg |= BIT(vf_shift);
861 /*
862 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
863 * For more info take a look at ixgbe_set_vf_lpe
864 */
865 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
866 struct net_device *dev = adapter->netdev;
867 int pf_max_frame = dev->mtu + ETH_HLEN;
868
869 #ifdef CONFIG_FCOE
870 if (dev->features & NETIF_F_FCOE_MTU)
871 pf_max_frame = max_t(int, pf_max_frame,
872 IXGBE_FCOE_JUMBO_FRAME_SIZE);
873
874 #endif /* CONFIG_FCOE */
875 if (pf_max_frame > ETH_FRAME_LEN)
876 reg &= ~BIT(vf_shift);
877 }
878 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
879
880 /* enable VF mailbox for further messages */
881 adapter->vfinfo[vf].clear_to_send = true;
882
883 /* Enable counting of spoofed packets in the SSVPC register */
884 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
885 reg |= BIT(vf_shift);
886 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
887
888 /*
889 * Reset the VFs TDWBAL and TDWBAH registers
890 * which are not cleared by an FLR
891 */
892 for (i = 0; i < q_per_pool; i++) {
893 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
894 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
895 }
896
897 /* reply to reset with ack and vf mac address */
898 msgbuf[0] = IXGBE_VF_RESET;
899 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
900 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
901 memcpy(addr, vf_mac, ETH_ALEN);
902 } else {
903 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
904 }
905
906 /*
907 * Piggyback the multicast filter type so VF can compute the
908 * correct vectors
909 */
910 msgbuf[3] = hw->mac.mc_filter_type;
911 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
912
913 return 0;
914 }
915
916 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
917 u32 *msgbuf, u32 vf)
918 {
919 u8 *new_mac = ((u8 *)(&msgbuf[1]));
920
921 if (!is_valid_ether_addr(new_mac)) {
922 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
923 return -1;
924 }
925
926 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
927 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
928 e_warn(drv,
929 "VF %d attempted to override administratively set MAC address\n"
930 "Reload the VF driver to resume operations\n",
931 vf);
932 return -1;
933 }
934
935 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
936 }
937
938 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
939 u32 *msgbuf, u32 vf)
940 {
941 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
942 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
943 u8 tcs = adapter->hw_tcs;
944
945 if (adapter->vfinfo[vf].pf_vlan || tcs) {
946 e_warn(drv,
947 "VF %d attempted to override administratively set VLAN configuration\n"
948 "Reload the VF driver to resume operations\n",
949 vf);
950 return -1;
951 }
952
953 /* VLAN 0 is a special case, don't allow it to be removed */
954 if (!vid && !add)
955 return 0;
956
957 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
958 }
959
960 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
961 u32 *msgbuf, u32 vf)
962 {
963 u8 *new_mac = ((u8 *)(&msgbuf[1]));
964 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
965 IXGBE_VT_MSGINFO_SHIFT;
966 int err;
967
968 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
969 index > 0) {
970 e_warn(drv,
971 "VF %d requested MACVLAN filter but is administratively denied\n",
972 vf);
973 return -1;
974 }
975
976 /* An non-zero index indicates the VF is setting a filter */
977 if (index) {
978 if (!is_valid_ether_addr(new_mac)) {
979 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
980 return -1;
981 }
982
983 /*
984 * If the VF is allowed to set MAC filters then turn off
985 * anti-spoofing to avoid false positives.
986 */
987 if (adapter->vfinfo[vf].spoofchk_enabled) {
988 struct ixgbe_hw *hw = &adapter->hw;
989
990 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
991 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
992 }
993 }
994
995 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
996 if (err == -ENOSPC)
997 e_warn(drv,
998 "VF %d has requested a MACVLAN filter but there is no space for it\n",
999 vf);
1000
1001 return err < 0;
1002 }
1003
1004 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1005 u32 *msgbuf, u32 vf)
1006 {
1007 int api = msgbuf[1];
1008
1009 switch (api) {
1010 case ixgbe_mbox_api_10:
1011 case ixgbe_mbox_api_11:
1012 case ixgbe_mbox_api_12:
1013 case ixgbe_mbox_api_13:
1014 adapter->vfinfo[vf].vf_api = api;
1015 return 0;
1016 default:
1017 break;
1018 }
1019
1020 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1021
1022 return -1;
1023 }
1024
1025 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1026 u32 *msgbuf, u32 vf)
1027 {
1028 struct net_device *dev = adapter->netdev;
1029 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1030 unsigned int default_tc = 0;
1031 u8 num_tcs = adapter->hw_tcs;
1032
1033 /* verify the PF is supporting the correct APIs */
1034 switch (adapter->vfinfo[vf].vf_api) {
1035 case ixgbe_mbox_api_20:
1036 case ixgbe_mbox_api_11:
1037 case ixgbe_mbox_api_12:
1038 case ixgbe_mbox_api_13:
1039 break;
1040 default:
1041 return -1;
1042 }
1043
1044 /* only allow 1 Tx queue for bandwidth limiting */
1045 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1046 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1047
1048 /* if TCs > 1 determine which TC belongs to default user priority */
1049 if (num_tcs > 1)
1050 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1051
1052 /* notify VF of need for VLAN tag stripping, and correct queue */
1053 if (num_tcs)
1054 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1055 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1056 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1057 else
1058 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1059
1060 /* notify VF of default queue */
1061 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1062
1063 return 0;
1064 }
1065
1066 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1067 {
1068 u32 i, j;
1069 u32 *out_buf = &msgbuf[1];
1070 const u8 *reta = adapter->rss_indir_tbl;
1071 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1072
1073 /* Check if operation is permitted */
1074 if (!adapter->vfinfo[vf].rss_query_enabled)
1075 return -EPERM;
1076
1077 /* verify the PF is supporting the correct API */
1078 switch (adapter->vfinfo[vf].vf_api) {
1079 case ixgbe_mbox_api_13:
1080 case ixgbe_mbox_api_12:
1081 break;
1082 default:
1083 return -EOPNOTSUPP;
1084 }
1085
1086 /* This mailbox command is supported (required) only for 82599 and x540
1087 * VFs which support up to 4 RSS queues. Therefore we will compress the
1088 * RETA by saving only 2 bits from each entry. This way we will be able
1089 * to transfer the whole RETA in a single mailbox operation.
1090 */
1091 for (i = 0; i < reta_size / 16; i++) {
1092 out_buf[i] = 0;
1093 for (j = 0; j < 16; j++)
1094 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1095 }
1096
1097 return 0;
1098 }
1099
1100 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1101 u32 *msgbuf, u32 vf)
1102 {
1103 u32 *rss_key = &msgbuf[1];
1104
1105 /* Check if the operation is permitted */
1106 if (!adapter->vfinfo[vf].rss_query_enabled)
1107 return -EPERM;
1108
1109 /* verify the PF is supporting the correct API */
1110 switch (adapter->vfinfo[vf].vf_api) {
1111 case ixgbe_mbox_api_13:
1112 case ixgbe_mbox_api_12:
1113 break;
1114 default:
1115 return -EOPNOTSUPP;
1116 }
1117
1118 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1119
1120 return 0;
1121 }
1122
1123 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1124 u32 *msgbuf, u32 vf)
1125 {
1126 struct ixgbe_hw *hw = &adapter->hw;
1127 int xcast_mode = msgbuf[1];
1128 u32 vmolr, fctrl, disable, enable;
1129
1130 /* verify the PF is supporting the correct APIs */
1131 switch (adapter->vfinfo[vf].vf_api) {
1132 case ixgbe_mbox_api_12:
1133 /* promisc introduced in 1.3 version */
1134 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1135 return -EOPNOTSUPP;
1136 /* Fall threw */
1137 case ixgbe_mbox_api_13:
1138 break;
1139 default:
1140 return -EOPNOTSUPP;
1141 }
1142
1143 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1144 !adapter->vfinfo[vf].trusted) {
1145 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1146 }
1147
1148 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1149 goto out;
1150
1151 switch (xcast_mode) {
1152 case IXGBEVF_XCAST_MODE_NONE:
1153 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1154 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1155 enable = 0;
1156 break;
1157 case IXGBEVF_XCAST_MODE_MULTI:
1158 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1159 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1160 break;
1161 case IXGBEVF_XCAST_MODE_ALLMULTI:
1162 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1163 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1164 break;
1165 case IXGBEVF_XCAST_MODE_PROMISC:
1166 if (hw->mac.type <= ixgbe_mac_82599EB)
1167 return -EOPNOTSUPP;
1168
1169 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1170 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1171 /* VF promisc requires PF in promisc */
1172 e_warn(drv,
1173 "Enabling VF promisc requires PF in promisc\n");
1174 return -EPERM;
1175 }
1176
1177 disable = 0;
1178 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1179 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1180 break;
1181 default:
1182 return -EOPNOTSUPP;
1183 }
1184
1185 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1186 vmolr &= ~disable;
1187 vmolr |= enable;
1188 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1189
1190 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1191
1192 out:
1193 msgbuf[1] = xcast_mode;
1194
1195 return 0;
1196 }
1197
1198 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1199 {
1200 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1201 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1202 struct ixgbe_hw *hw = &adapter->hw;
1203 s32 retval;
1204
1205 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1206
1207 if (retval) {
1208 pr_err("Error receiving message from VF\n");
1209 return retval;
1210 }
1211
1212 /* this is a message we already processed, do nothing */
1213 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1214 return 0;
1215
1216 /* flush the ack before we write any messages back */
1217 IXGBE_WRITE_FLUSH(hw);
1218
1219 if (msgbuf[0] == IXGBE_VF_RESET)
1220 return ixgbe_vf_reset_msg(adapter, vf);
1221
1222 /*
1223 * until the vf completes a virtual function reset it should not be
1224 * allowed to start any configuration.
1225 */
1226 if (!adapter->vfinfo[vf].clear_to_send) {
1227 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1228 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1229 return 0;
1230 }
1231
1232 switch ((msgbuf[0] & 0xFFFF)) {
1233 case IXGBE_VF_SET_MAC_ADDR:
1234 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1235 break;
1236 case IXGBE_VF_SET_MULTICAST:
1237 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1238 break;
1239 case IXGBE_VF_SET_VLAN:
1240 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1241 break;
1242 case IXGBE_VF_SET_LPE:
1243 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1244 break;
1245 case IXGBE_VF_SET_MACVLAN:
1246 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1247 break;
1248 case IXGBE_VF_API_NEGOTIATE:
1249 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1250 break;
1251 case IXGBE_VF_GET_QUEUES:
1252 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1253 break;
1254 case IXGBE_VF_GET_RETA:
1255 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1256 break;
1257 case IXGBE_VF_GET_RSS_KEY:
1258 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1259 break;
1260 case IXGBE_VF_UPDATE_XCAST_MODE:
1261 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1262 break;
1263 default:
1264 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1265 retval = IXGBE_ERR_MBX;
1266 break;
1267 }
1268
1269 /* notify the VF of the results of what it sent us */
1270 if (retval)
1271 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1272 else
1273 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1274
1275 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1276
1277 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1278
1279 return retval;
1280 }
1281
1282 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1283 {
1284 struct ixgbe_hw *hw = &adapter->hw;
1285 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1286
1287 /* if device isn't clear to send it shouldn't be reading either */
1288 if (!adapter->vfinfo[vf].clear_to_send)
1289 ixgbe_write_mbx(hw, &msg, 1, vf);
1290 }
1291
1292 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1293 {
1294 struct ixgbe_hw *hw = &adapter->hw;
1295 u32 vf;
1296
1297 for (vf = 0; vf < adapter->num_vfs; vf++) {
1298 /* process any reset requests */
1299 if (!ixgbe_check_for_rst(hw, vf))
1300 ixgbe_vf_reset_event(adapter, vf);
1301
1302 /* process any messages pending */
1303 if (!ixgbe_check_for_msg(hw, vf))
1304 ixgbe_rcv_msg_from_vf(adapter, vf);
1305
1306 /* process any acks */
1307 if (!ixgbe_check_for_ack(hw, vf))
1308 ixgbe_rcv_ack_from_vf(adapter, vf);
1309 }
1310 }
1311
1312 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1313 {
1314 struct ixgbe_hw *hw = &adapter->hw;
1315
1316 /* disable transmit and receive for all vfs */
1317 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1318 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1319
1320 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1321 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1322 }
1323
1324 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1325 {
1326 struct ixgbe_hw *hw = &adapter->hw;
1327 u32 ping;
1328
1329 ping = IXGBE_PF_CONTROL_MSG;
1330 if (adapter->vfinfo[vf].clear_to_send)
1331 ping |= IXGBE_VT_MSGTYPE_CTS;
1332 ixgbe_write_mbx(hw, &ping, 1, vf);
1333 }
1334
1335 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1336 {
1337 struct ixgbe_hw *hw = &adapter->hw;
1338 u32 ping;
1339 int i;
1340
1341 for (i = 0 ; i < adapter->num_vfs; i++) {
1342 ping = IXGBE_PF_CONTROL_MSG;
1343 if (adapter->vfinfo[i].clear_to_send)
1344 ping |= IXGBE_VT_MSGTYPE_CTS;
1345 ixgbe_write_mbx(hw, &ping, 1, i);
1346 }
1347 }
1348
1349 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1350 {
1351 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1352 s32 retval;
1353
1354 if (vf >= adapter->num_vfs)
1355 return -EINVAL;
1356
1357 if (is_valid_ether_addr(mac)) {
1358 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1359 mac, vf);
1360 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1361
1362 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1363 if (retval >= 0) {
1364 adapter->vfinfo[vf].pf_set_mac = true;
1365
1366 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1367 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1368 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1369 }
1370 } else {
1371 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1372 }
1373 } else if (is_zero_ether_addr(mac)) {
1374 unsigned char *vf_mac_addr =
1375 adapter->vfinfo[vf].vf_mac_addresses;
1376
1377 /* nothing to do */
1378 if (is_zero_ether_addr(vf_mac_addr))
1379 return 0;
1380
1381 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1382
1383 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1384 if (retval >= 0) {
1385 adapter->vfinfo[vf].pf_set_mac = false;
1386 memcpy(vf_mac_addr, mac, ETH_ALEN);
1387 } else {
1388 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1389 }
1390 } else {
1391 retval = -EINVAL;
1392 }
1393
1394 return retval;
1395 }
1396
1397 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1398 u16 vlan, u8 qos)
1399 {
1400 struct ixgbe_hw *hw = &adapter->hw;
1401 int err;
1402
1403 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1404 if (err)
1405 goto out;
1406
1407 /* Revoke tagless access via VLAN 0 */
1408 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1409
1410 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1411 ixgbe_set_vmolr(hw, vf, false);
1412
1413 /* enable hide vlan on X550 */
1414 if (hw->mac.type >= ixgbe_mac_X550)
1415 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1416 IXGBE_QDE_HIDE_VLAN);
1417
1418 adapter->vfinfo[vf].pf_vlan = vlan;
1419 adapter->vfinfo[vf].pf_qos = qos;
1420 dev_info(&adapter->pdev->dev,
1421 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1422 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1423 dev_warn(&adapter->pdev->dev,
1424 "The VF VLAN has been set, but the PF device is not up.\n");
1425 dev_warn(&adapter->pdev->dev,
1426 "Bring the PF device up before attempting to use the VF device.\n");
1427 }
1428
1429 out:
1430 return err;
1431 }
1432
1433 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1434 {
1435 struct ixgbe_hw *hw = &adapter->hw;
1436 int err;
1437
1438 err = ixgbe_set_vf_vlan(adapter, false,
1439 adapter->vfinfo[vf].pf_vlan, vf);
1440 /* Restore tagless access via VLAN 0 */
1441 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1442 ixgbe_clear_vmvir(adapter, vf);
1443 ixgbe_set_vmolr(hw, vf, true);
1444
1445 /* disable hide VLAN on X550 */
1446 if (hw->mac.type >= ixgbe_mac_X550)
1447 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1448
1449 adapter->vfinfo[vf].pf_vlan = 0;
1450 adapter->vfinfo[vf].pf_qos = 0;
1451
1452 return err;
1453 }
1454
1455 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1456 u8 qos, __be16 vlan_proto)
1457 {
1458 int err = 0;
1459 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1460
1461 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1462 return -EINVAL;
1463 if (vlan_proto != htons(ETH_P_8021Q))
1464 return -EPROTONOSUPPORT;
1465 if (vlan || qos) {
1466 /* Check if there is already a port VLAN set, if so
1467 * we have to delete the old one first before we
1468 * can set the new one. The usage model had
1469 * previously assumed the user would delete the
1470 * old port VLAN before setting a new one but this
1471 * is not necessarily the case.
1472 */
1473 if (adapter->vfinfo[vf].pf_vlan)
1474 err = ixgbe_disable_port_vlan(adapter, vf);
1475 if (err)
1476 goto out;
1477 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1478 } else {
1479 err = ixgbe_disable_port_vlan(adapter, vf);
1480 }
1481
1482 out:
1483 return err;
1484 }
1485
1486 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1487 {
1488 switch (adapter->link_speed) {
1489 case IXGBE_LINK_SPEED_100_FULL:
1490 return 100;
1491 case IXGBE_LINK_SPEED_1GB_FULL:
1492 return 1000;
1493 case IXGBE_LINK_SPEED_10GB_FULL:
1494 return 10000;
1495 default:
1496 return 0;
1497 }
1498 }
1499
1500 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1501 {
1502 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1503 struct ixgbe_hw *hw = &adapter->hw;
1504 u32 bcnrc_val = 0;
1505 u16 queue, queues_per_pool;
1506 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1507
1508 if (tx_rate) {
1509 /* start with base link speed value */
1510 bcnrc_val = adapter->vf_rate_link_speed;
1511
1512 /* Calculate the rate factor values to set */
1513 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1514 bcnrc_val /= tx_rate;
1515
1516 /* clear everything but the rate factor */
1517 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1518 IXGBE_RTTBCNRC_RF_DEC_MASK;
1519
1520 /* enable the rate scheduler */
1521 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1522 }
1523
1524 /*
1525 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1526 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1527 * and 0x004 otherwise.
1528 */
1529 switch (hw->mac.type) {
1530 case ixgbe_mac_82599EB:
1531 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1532 break;
1533 case ixgbe_mac_X540:
1534 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1535 break;
1536 default:
1537 break;
1538 }
1539
1540 /* determine how many queues per pool based on VMDq mask */
1541 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1542
1543 /* write value for all Tx queues belonging to VF */
1544 for (queue = 0; queue < queues_per_pool; queue++) {
1545 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1546
1547 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1548 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1549 }
1550 }
1551
1552 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1553 {
1554 int i;
1555
1556 /* VF Tx rate limit was not set */
1557 if (!adapter->vf_rate_link_speed)
1558 return;
1559
1560 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1561 adapter->vf_rate_link_speed = 0;
1562 dev_info(&adapter->pdev->dev,
1563 "Link speed has been changed. VF Transmit rate is disabled\n");
1564 }
1565
1566 for (i = 0; i < adapter->num_vfs; i++) {
1567 if (!adapter->vf_rate_link_speed)
1568 adapter->vfinfo[i].tx_rate = 0;
1569
1570 ixgbe_set_vf_rate_limit(adapter, i);
1571 }
1572 }
1573
1574 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1575 int max_tx_rate)
1576 {
1577 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1578 int link_speed;
1579
1580 /* verify VF is active */
1581 if (vf >= adapter->num_vfs)
1582 return -EINVAL;
1583
1584 /* verify link is up */
1585 if (!adapter->link_up)
1586 return -EINVAL;
1587
1588 /* verify we are linked at 10Gbps */
1589 link_speed = ixgbe_link_mbps(adapter);
1590 if (link_speed != 10000)
1591 return -EINVAL;
1592
1593 if (min_tx_rate)
1594 return -EINVAL;
1595
1596 /* rate limit cannot be less than 10Mbs or greater than link speed */
1597 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1598 return -EINVAL;
1599
1600 /* store values */
1601 adapter->vf_rate_link_speed = link_speed;
1602 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1603
1604 /* update hardware configuration */
1605 ixgbe_set_vf_rate_limit(adapter, vf);
1606
1607 return 0;
1608 }
1609
1610 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1611 {
1612 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1613 struct ixgbe_hw *hw = &adapter->hw;
1614
1615 if (vf >= adapter->num_vfs)
1616 return -EINVAL;
1617
1618 adapter->vfinfo[vf].spoofchk_enabled = setting;
1619
1620 /* configure MAC spoofing */
1621 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1622
1623 /* configure VLAN spoofing */
1624 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1625
1626 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1627 * calling set_ethertype_anti_spoofing for each VF in loop below
1628 */
1629 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1630 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1631 (IXGBE_ETQF_FILTER_EN |
1632 IXGBE_ETQF_TX_ANTISPOOF |
1633 IXGBE_ETH_P_LLDP));
1634
1635 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1636 (IXGBE_ETQF_FILTER_EN |
1637 IXGBE_ETQF_TX_ANTISPOOF |
1638 ETH_P_PAUSE));
1639
1640 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1641 }
1642
1643 return 0;
1644 }
1645
1646 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1647 bool setting)
1648 {
1649 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1650
1651 /* This operation is currently supported only for 82599 and x540
1652 * devices.
1653 */
1654 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1655 adapter->hw.mac.type >= ixgbe_mac_X550)
1656 return -EOPNOTSUPP;
1657
1658 if (vf >= adapter->num_vfs)
1659 return -EINVAL;
1660
1661 adapter->vfinfo[vf].rss_query_enabled = setting;
1662
1663 return 0;
1664 }
1665
1666 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1667 {
1668 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1669
1670 if (vf >= adapter->num_vfs)
1671 return -EINVAL;
1672
1673 /* nothing to do */
1674 if (adapter->vfinfo[vf].trusted == setting)
1675 return 0;
1676
1677 adapter->vfinfo[vf].trusted = setting;
1678
1679 /* reset VF to reconfigure features */
1680 adapter->vfinfo[vf].clear_to_send = false;
1681 ixgbe_ping_vf(adapter, vf);
1682
1683 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1684
1685 return 0;
1686 }
1687
1688 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1689 int vf, struct ifla_vf_info *ivi)
1690 {
1691 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1692 if (vf >= adapter->num_vfs)
1693 return -EINVAL;
1694 ivi->vf = vf;
1695 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1696 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1697 ivi->min_tx_rate = 0;
1698 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1699 ivi->qos = adapter->vfinfo[vf].pf_qos;
1700 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1701 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1702 ivi->trusted = adapter->vfinfo[vf].trusted;
1703 return 0;
1704 }
Linux with added FPC-III support