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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob8618599dfd6f5984ba77a23e7bdac658ddeb7958
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2015 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27 *******************************************************************************/
28
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
35 #include <linux/in.h>
36 #include <linux/ip.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #include <linux/if_bridge.h>
40 #ifdef NETIF_F_HW_VLAN_CTAG_TX
41 #include <linux/if_vlan.h>
42 #endif
43
44 #include "ixgbe.h"
45 #include "ixgbe_type.h"
46 #include "ixgbe_sriov.h"
47
48 #ifdef CONFIG_PCI_IOV
49 static 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 */
137 static 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 */
168 void 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 */
219 int 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
296 static 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 err = pci_enable_sriov(dev, num_vfs);
333 if (err) {
334 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
335 return err;
336 }
337 ixgbe_get_vfs(adapter);
338 ixgbe_sriov_reinit(adapter);
339
340 return num_vfs;
341 #else
342 return 0;
343 #endif
344 }
345
346 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
347 {
348 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
349 int err;
350 #ifdef CONFIG_PCI_IOV
351 u32 current_flags = adapter->flags;
352 #endif
353
354 err = ixgbe_disable_sriov(adapter);
355
356 /* Only reinit if no error and state changed */
357 #ifdef CONFIG_PCI_IOV
358 if (!err && current_flags != adapter->flags)
359 ixgbe_sriov_reinit(adapter);
360 #endif
361
362 return err;
363 }
364
365 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
366 {
367 if (num_vfs == 0)
368 return ixgbe_pci_sriov_disable(dev);
369 else
370 return ixgbe_pci_sriov_enable(dev, num_vfs);
371 }
372
373 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
374 u32 *msgbuf, u32 vf)
375 {
376 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
377 >> IXGBE_VT_MSGINFO_SHIFT;
378 u16 *hash_list = (u16 *)&msgbuf[1];
379 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
380 struct ixgbe_hw *hw = &adapter->hw;
381 int i;
382 u32 vector_bit;
383 u32 vector_reg;
384 u32 mta_reg;
385 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
386
387 /* only so many hash values supported */
388 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
389
390 /*
391 * salt away the number of multi cast addresses assigned
392 * to this VF for later use to restore when the PF multi cast
393 * list changes
394 */
395 vfinfo->num_vf_mc_hashes = entries;
396
397 /*
398 * VFs are limited to using the MTA hash table for their multicast
399 * addresses
400 */
401 for (i = 0; i < entries; i++) {
402 vfinfo->vf_mc_hashes[i] = hash_list[i];
403 }
404
405 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
406 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
407 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
408 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
409 mta_reg |= BIT(vector_bit);
410 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
411 }
412 vmolr |= IXGBE_VMOLR_ROMPE;
413 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
414
415 return 0;
416 }
417
418 #ifdef CONFIG_PCI_IOV
419 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
420 {
421 struct ixgbe_hw *hw = &adapter->hw;
422 struct vf_data_storage *vfinfo;
423 int i, j;
424 u32 vector_bit;
425 u32 vector_reg;
426 u32 mta_reg;
427
428 for (i = 0; i < adapter->num_vfs; i++) {
429 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
430 vfinfo = &adapter->vfinfo[i];
431 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
432 hw->addr_ctrl.mta_in_use++;
433 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
434 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
435 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
436 mta_reg |= BIT(vector_bit);
437 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
438 }
439
440 if (vfinfo->num_vf_mc_hashes)
441 vmolr |= IXGBE_VMOLR_ROMPE;
442 else
443 vmolr &= ~IXGBE_VMOLR_ROMPE;
444 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
445 }
446
447 /* Restore any VF macvlans */
448 ixgbe_full_sync_mac_table(adapter);
449 }
450 #endif
451
452 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
453 u32 vf)
454 {
455 struct ixgbe_hw *hw = &adapter->hw;
456 int err;
457
458 /* If VLAN overlaps with one the PF is currently monitoring make
459 * sure that we are able to allocate a VLVF entry. This may be
460 * redundant but it guarantees PF will maintain visibility to
461 * the VLAN.
462 */
463 if (add && test_bit(vid, adapter->active_vlans)) {
464 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
465 if (err)
466 return err;
467 }
468
469 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
470
471 if (add && !err)
472 return err;
473
474 /* If we failed to add the VF VLAN or we are removing the VF VLAN
475 * we may need to drop the PF pool bit in order to allow us to free
476 * up the VLVF resources.
477 */
478 if (test_bit(vid, adapter->active_vlans) ||
479 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
480 ixgbe_update_pf_promisc_vlvf(adapter, vid);
481
482 return err;
483 }
484
485 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
486 {
487 struct ixgbe_hw *hw = &adapter->hw;
488 int max_frame = msgbuf[1];
489 u32 max_frs;
490
491 /*
492 * For 82599EB we have to keep all PFs and VFs operating with
493 * the same max_frame value in order to avoid sending an oversize
494 * frame to a VF. In order to guarantee this is handled correctly
495 * for all cases we have several special exceptions to take into
496 * account before we can enable the VF for receive
497 */
498 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
499 struct net_device *dev = adapter->netdev;
500 int pf_max_frame = dev->mtu + ETH_HLEN;
501 u32 reg_offset, vf_shift, vfre;
502 s32 err = 0;
503
504 #ifdef CONFIG_FCOE
505 if (dev->features & NETIF_F_FCOE_MTU)
506 pf_max_frame = max_t(int, pf_max_frame,
507 IXGBE_FCOE_JUMBO_FRAME_SIZE);
508
509 #endif /* CONFIG_FCOE */
510 switch (adapter->vfinfo[vf].vf_api) {
511 case ixgbe_mbox_api_11:
512 case ixgbe_mbox_api_12:
513 /*
514 * Version 1.1 supports jumbo frames on VFs if PF has
515 * jumbo frames enabled which means legacy VFs are
516 * disabled
517 */
518 if (pf_max_frame > ETH_FRAME_LEN)
519 break;
520 default:
521 /*
522 * If the PF or VF are running w/ jumbo frames enabled
523 * we need to shut down the VF Rx path as we cannot
524 * support jumbo frames on legacy VFs
525 */
526 if ((pf_max_frame > ETH_FRAME_LEN) ||
527 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
528 err = -EINVAL;
529 break;
530 }
531
532 /* determine VF receive enable location */
533 vf_shift = vf % 32;
534 reg_offset = vf / 32;
535
536 /* enable or disable receive depending on error */
537 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
538 if (err)
539 vfre &= ~BIT(vf_shift);
540 else
541 vfre |= BIT(vf_shift);
542 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
543
544 if (err) {
545 e_err(drv, "VF max_frame %d out of range\n", max_frame);
546 return err;
547 }
548 }
549
550 /* MTU < 68 is an error and causes problems on some kernels */
551 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
552 e_err(drv, "VF max_frame %d out of range\n", max_frame);
553 return -EINVAL;
554 }
555
556 /* pull current max frame size from hardware */
557 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
558 max_frs &= IXGBE_MHADD_MFS_MASK;
559 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
560
561 if (max_frs < max_frame) {
562 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
563 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
564 }
565
566 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
567
568 return 0;
569 }
570
571 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
572 {
573 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
574 vmolr |= IXGBE_VMOLR_BAM;
575 if (aupe)
576 vmolr |= IXGBE_VMOLR_AUPE;
577 else
578 vmolr &= ~IXGBE_VMOLR_AUPE;
579 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
580 }
581
582 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
583 {
584 struct ixgbe_hw *hw = &adapter->hw;
585
586 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
587 }
588
589 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
590 {
591 struct ixgbe_hw *hw = &adapter->hw;
592 u32 vlvfb_mask, pool_mask, i;
593
594 /* create mask for VF and other pools */
595 pool_mask = ~BIT(VMDQ_P(0) % 32);
596 vlvfb_mask = BIT(vf % 32);
597
598 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
599 for (i = IXGBE_VLVF_ENTRIES; i--;) {
600 u32 bits[2], vlvfb, vid, vfta, vlvf;
601 u32 word = i * 2 + vf / 32;
602 u32 mask;
603
604 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
605
606 /* if our bit isn't set we can skip it */
607 if (!(vlvfb & vlvfb_mask))
608 continue;
609
610 /* clear our bit from vlvfb */
611 vlvfb ^= vlvfb_mask;
612
613 /* create 64b mask to chedk to see if we should clear VLVF */
614 bits[word % 2] = vlvfb;
615 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
616
617 /* if other pools are present, just remove ourselves */
618 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
619 (bits[VMDQ_P(0) / 32] & pool_mask))
620 goto update_vlvfb;
621
622 /* if PF is present, leave VFTA */
623 if (bits[0] || bits[1])
624 goto update_vlvf;
625
626 /* if we cannot determine VLAN just remove ourselves */
627 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
628 if (!vlvf)
629 goto update_vlvfb;
630
631 vid = vlvf & VLAN_VID_MASK;
632 mask = BIT(vid % 32);
633
634 /* clear bit from VFTA */
635 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
636 if (vfta & mask)
637 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
638 update_vlvf:
639 /* clear POOL selection enable */
640 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
641
642 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
643 vlvfb = 0;
644 update_vlvfb:
645 /* clear pool bits */
646 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
647 }
648 }
649
650 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
651 {
652 struct ixgbe_hw *hw = &adapter->hw;
653 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
654 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
655
656 /* remove VLAN filters beloning to this VF */
657 ixgbe_clear_vf_vlans(adapter, vf);
658
659 /* add back PF assigned VLAN or VLAN 0 */
660 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
661
662 /* reset offloads to defaults */
663 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
664
665 /* set outgoing tags for VFs */
666 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
667 ixgbe_clear_vmvir(adapter, vf);
668 } else {
669 if (vfinfo->pf_qos || !num_tcs)
670 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
671 vfinfo->pf_qos, vf);
672 else
673 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
674 adapter->default_up, vf);
675
676 if (vfinfo->spoofchk_enabled)
677 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
678 }
679
680 /* reset multicast table array for vf */
681 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
682
683 /* Flush and reset the mta with the new values */
684 ixgbe_set_rx_mode(adapter->netdev);
685
686 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
687
688 /* reset VF api back to unknown */
689 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
690 }
691
692 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
693 int vf, unsigned char *mac_addr)
694 {
695 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
696 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
697 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
698
699 return 0;
700 }
701
702 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
703 int vf, int index, unsigned char *mac_addr)
704 {
705 struct list_head *pos;
706 struct vf_macvlans *entry;
707
708 if (index <= 1) {
709 list_for_each(pos, &adapter->vf_mvs.l) {
710 entry = list_entry(pos, struct vf_macvlans, l);
711 if (entry->vf == vf) {
712 entry->vf = -1;
713 entry->free = true;
714 entry->is_macvlan = false;
715 ixgbe_del_mac_filter(adapter,
716 entry->vf_macvlan, vf);
717 }
718 }
719 }
720
721 /*
722 * If index was zero then we were asked to clear the uc list
723 * for the VF. We're done.
724 */
725 if (!index)
726 return 0;
727
728 entry = NULL;
729
730 list_for_each(pos, &adapter->vf_mvs.l) {
731 entry = list_entry(pos, struct vf_macvlans, l);
732 if (entry->free)
733 break;
734 }
735
736 /*
737 * If we traversed the entire list and didn't find a free entry
738 * then we're out of space on the RAR table. Also entry may
739 * be NULL because the original memory allocation for the list
740 * failed, which is not fatal but does mean we can't support
741 * VF requests for MACVLAN because we couldn't allocate
742 * memory for the list management required.
743 */
744 if (!entry || !entry->free)
745 return -ENOSPC;
746
747 entry->free = false;
748 entry->is_macvlan = true;
749 entry->vf = vf;
750 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
751
752 ixgbe_add_mac_filter(adapter, mac_addr, vf);
753
754 return 0;
755 }
756
757 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
758 {
759 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
760 unsigned int vfn = (event_mask & 0x3f);
761
762 bool enable = ((event_mask & 0x10000000U) != 0);
763
764 if (enable)
765 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
766
767 return 0;
768 }
769
770 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
771 u32 qde)
772 {
773 struct ixgbe_hw *hw = &adapter->hw;
774 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
775 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
776 int i;
777
778 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
779 u32 reg;
780
781 /* flush previous write */
782 IXGBE_WRITE_FLUSH(hw);
783
784 /* indicate to hardware that we want to set drop enable */
785 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
786 reg |= i << IXGBE_QDE_IDX_SHIFT;
787 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
788 }
789 }
790
791 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
792 {
793 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
794 struct ixgbe_hw *hw = &adapter->hw;
795 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
796 u32 reg, reg_offset, vf_shift;
797 u32 msgbuf[4] = {0, 0, 0, 0};
798 u8 *addr = (u8 *)(&msgbuf[1]);
799 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
800 int i;
801
802 e_info(probe, "VF Reset msg received from vf %d\n", vf);
803
804 /* reset the filters for the device */
805 ixgbe_vf_reset_event(adapter, vf);
806
807 /* set vf mac address */
808 if (!is_zero_ether_addr(vf_mac))
809 ixgbe_set_vf_mac(adapter, vf, vf_mac);
810
811 vf_shift = vf % 32;
812 reg_offset = vf / 32;
813
814 /* enable transmit for vf */
815 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
816 reg |= BIT(vf_shift);
817 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
818
819 /* force drop enable for all VF Rx queues */
820 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
821
822 /* enable receive for vf */
823 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
824 reg |= BIT(vf_shift);
825 /*
826 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
827 * For more info take a look at ixgbe_set_vf_lpe
828 */
829 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
830 struct net_device *dev = adapter->netdev;
831 int pf_max_frame = dev->mtu + ETH_HLEN;
832
833 #ifdef CONFIG_FCOE
834 if (dev->features & NETIF_F_FCOE_MTU)
835 pf_max_frame = max_t(int, pf_max_frame,
836 IXGBE_FCOE_JUMBO_FRAME_SIZE);
837
838 #endif /* CONFIG_FCOE */
839 if (pf_max_frame > ETH_FRAME_LEN)
840 reg &= ~BIT(vf_shift);
841 }
842 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
843
844 /* enable VF mailbox for further messages */
845 adapter->vfinfo[vf].clear_to_send = true;
846
847 /* Enable counting of spoofed packets in the SSVPC register */
848 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
849 reg |= BIT(vf_shift);
850 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
851
852 /*
853 * Reset the VFs TDWBAL and TDWBAH registers
854 * which are not cleared by an FLR
855 */
856 for (i = 0; i < q_per_pool; i++) {
857 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
858 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
859 }
860
861 /* reply to reset with ack and vf mac address */
862 msgbuf[0] = IXGBE_VF_RESET;
863 if (!is_zero_ether_addr(vf_mac)) {
864 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
865 memcpy(addr, vf_mac, ETH_ALEN);
866 } else {
867 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
868 dev_warn(&adapter->pdev->dev,
869 "VF %d has no MAC address assigned, you may have to assign one manually\n",
870 vf);
871 }
872
873 /*
874 * Piggyback the multicast filter type so VF can compute the
875 * correct vectors
876 */
877 msgbuf[3] = hw->mac.mc_filter_type;
878 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
879
880 return 0;
881 }
882
883 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
884 u32 *msgbuf, u32 vf)
885 {
886 u8 *new_mac = ((u8 *)(&msgbuf[1]));
887
888 if (!is_valid_ether_addr(new_mac)) {
889 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
890 return -1;
891 }
892
893 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
894 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
895 e_warn(drv,
896 "VF %d attempted to override administratively set MAC address\n"
897 "Reload the VF driver to resume operations\n",
898 vf);
899 return -1;
900 }
901
902 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
903 }
904
905 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
906 u32 *msgbuf, u32 vf)
907 {
908 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
909 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
910 u8 tcs = netdev_get_num_tc(adapter->netdev);
911
912 if (adapter->vfinfo[vf].pf_vlan || tcs) {
913 e_warn(drv,
914 "VF %d attempted to override administratively set VLAN configuration\n"
915 "Reload the VF driver to resume operations\n",
916 vf);
917 return -1;
918 }
919
920 /* VLAN 0 is a special case, don't allow it to be removed */
921 if (!vid && !add)
922 return 0;
923
924 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
925 }
926
927 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
928 u32 *msgbuf, u32 vf)
929 {
930 u8 *new_mac = ((u8 *)(&msgbuf[1]));
931 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
932 IXGBE_VT_MSGINFO_SHIFT;
933 int err;
934
935 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
936 e_warn(drv,
937 "VF %d requested MACVLAN filter but is administratively denied\n",
938 vf);
939 return -1;
940 }
941
942 /* An non-zero index indicates the VF is setting a filter */
943 if (index) {
944 if (!is_valid_ether_addr(new_mac)) {
945 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
946 return -1;
947 }
948
949 /*
950 * If the VF is allowed to set MAC filters then turn off
951 * anti-spoofing to avoid false positives.
952 */
953 if (adapter->vfinfo[vf].spoofchk_enabled) {
954 struct ixgbe_hw *hw = &adapter->hw;
955
956 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
957 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
958 }
959 }
960
961 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
962 if (err == -ENOSPC)
963 e_warn(drv,
964 "VF %d has requested a MACVLAN filter but there is no space for it\n",
965 vf);
966
967 return err < 0;
968 }
969
970 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
971 u32 *msgbuf, u32 vf)
972 {
973 int api = msgbuf[1];
974
975 switch (api) {
976 case ixgbe_mbox_api_10:
977 case ixgbe_mbox_api_11:
978 case ixgbe_mbox_api_12:
979 adapter->vfinfo[vf].vf_api = api;
980 return 0;
981 default:
982 break;
983 }
984
985 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
986
987 return -1;
988 }
989
990 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
991 u32 *msgbuf, u32 vf)
992 {
993 struct net_device *dev = adapter->netdev;
994 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
995 unsigned int default_tc = 0;
996 u8 num_tcs = netdev_get_num_tc(dev);
997
998 /* verify the PF is supporting the correct APIs */
999 switch (adapter->vfinfo[vf].vf_api) {
1000 case ixgbe_mbox_api_20:
1001 case ixgbe_mbox_api_11:
1002 case ixgbe_mbox_api_12:
1003 break;
1004 default:
1005 return -1;
1006 }
1007
1008 /* only allow 1 Tx queue for bandwidth limiting */
1009 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1010 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1011
1012 /* if TCs > 1 determine which TC belongs to default user priority */
1013 if (num_tcs > 1)
1014 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1015
1016 /* notify VF of need for VLAN tag stripping, and correct queue */
1017 if (num_tcs)
1018 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1019 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1020 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1021 else
1022 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1023
1024 /* notify VF of default queue */
1025 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1026
1027 return 0;
1028 }
1029
1030 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1031 {
1032 u32 i, j;
1033 u32 *out_buf = &msgbuf[1];
1034 const u8 *reta = adapter->rss_indir_tbl;
1035 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1036
1037 /* Check if operation is permitted */
1038 if (!adapter->vfinfo[vf].rss_query_enabled)
1039 return -EPERM;
1040
1041 /* verify the PF is supporting the correct API */
1042 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1043 return -EOPNOTSUPP;
1044
1045 /* This mailbox command is supported (required) only for 82599 and x540
1046 * VFs which support up to 4 RSS queues. Therefore we will compress the
1047 * RETA by saving only 2 bits from each entry. This way we will be able
1048 * to transfer the whole RETA in a single mailbox operation.
1049 */
1050 for (i = 0; i < reta_size / 16; i++) {
1051 out_buf[i] = 0;
1052 for (j = 0; j < 16; j++)
1053 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1054 }
1055
1056 return 0;
1057 }
1058
1059 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1060 u32 *msgbuf, u32 vf)
1061 {
1062 u32 *rss_key = &msgbuf[1];
1063
1064 /* Check if the operation is permitted */
1065 if (!adapter->vfinfo[vf].rss_query_enabled)
1066 return -EPERM;
1067
1068 /* verify the PF is supporting the correct API */
1069 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1070 return -EOPNOTSUPP;
1071
1072 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key));
1073
1074 return 0;
1075 }
1076
1077 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1078 u32 *msgbuf, u32 vf)
1079 {
1080 struct ixgbe_hw *hw = &adapter->hw;
1081 int xcast_mode = msgbuf[1];
1082 u32 vmolr, disable, enable;
1083
1084 /* verify the PF is supporting the correct APIs */
1085 switch (adapter->vfinfo[vf].vf_api) {
1086 case ixgbe_mbox_api_12:
1087 break;
1088 default:
1089 return -EOPNOTSUPP;
1090 }
1091
1092 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1093 !adapter->vfinfo[vf].trusted) {
1094 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1095 }
1096
1097 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1098 goto out;
1099
1100 switch (xcast_mode) {
1101 case IXGBEVF_XCAST_MODE_NONE:
1102 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1103 enable = 0;
1104 break;
1105 case IXGBEVF_XCAST_MODE_MULTI:
1106 disable = IXGBE_VMOLR_MPE;
1107 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1108 break;
1109 case IXGBEVF_XCAST_MODE_ALLMULTI:
1110 disable = 0;
1111 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1112 break;
1113 default:
1114 return -EOPNOTSUPP;
1115 }
1116
1117 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1118 vmolr &= ~disable;
1119 vmolr |= enable;
1120 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1121
1122 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1123
1124 out:
1125 msgbuf[1] = xcast_mode;
1126
1127 return 0;
1128 }
1129
1130 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1131 {
1132 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1133 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1134 struct ixgbe_hw *hw = &adapter->hw;
1135 s32 retval;
1136
1137 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1138
1139 if (retval) {
1140 pr_err("Error receiving message from VF\n");
1141 return retval;
1142 }
1143
1144 /* this is a message we already processed, do nothing */
1145 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1146 return 0;
1147
1148 /* flush the ack before we write any messages back */
1149 IXGBE_WRITE_FLUSH(hw);
1150
1151 if (msgbuf[0] == IXGBE_VF_RESET)
1152 return ixgbe_vf_reset_msg(adapter, vf);
1153
1154 /*
1155 * until the vf completes a virtual function reset it should not be
1156 * allowed to start any configuration.
1157 */
1158 if (!adapter->vfinfo[vf].clear_to_send) {
1159 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1160 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1161 return 0;
1162 }
1163
1164 switch ((msgbuf[0] & 0xFFFF)) {
1165 case IXGBE_VF_SET_MAC_ADDR:
1166 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1167 break;
1168 case IXGBE_VF_SET_MULTICAST:
1169 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1170 break;
1171 case IXGBE_VF_SET_VLAN:
1172 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1173 break;
1174 case IXGBE_VF_SET_LPE:
1175 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1176 break;
1177 case IXGBE_VF_SET_MACVLAN:
1178 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1179 break;
1180 case IXGBE_VF_API_NEGOTIATE:
1181 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1182 break;
1183 case IXGBE_VF_GET_QUEUES:
1184 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1185 break;
1186 case IXGBE_VF_GET_RETA:
1187 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1188 break;
1189 case IXGBE_VF_GET_RSS_KEY:
1190 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1191 break;
1192 case IXGBE_VF_UPDATE_XCAST_MODE:
1193 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1194 break;
1195 default:
1196 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1197 retval = IXGBE_ERR_MBX;
1198 break;
1199 }
1200
1201 /* notify the VF of the results of what it sent us */
1202 if (retval)
1203 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1204 else
1205 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1206
1207 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1208
1209 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1210
1211 return retval;
1212 }
1213
1214 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1215 {
1216 struct ixgbe_hw *hw = &adapter->hw;
1217 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1218
1219 /* if device isn't clear to send it shouldn't be reading either */
1220 if (!adapter->vfinfo[vf].clear_to_send)
1221 ixgbe_write_mbx(hw, &msg, 1, vf);
1222 }
1223
1224 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1225 {
1226 struct ixgbe_hw *hw = &adapter->hw;
1227 u32 vf;
1228
1229 for (vf = 0; vf < adapter->num_vfs; vf++) {
1230 /* process any reset requests */
1231 if (!ixgbe_check_for_rst(hw, vf))
1232 ixgbe_vf_reset_event(adapter, vf);
1233
1234 /* process any messages pending */
1235 if (!ixgbe_check_for_msg(hw, vf))
1236 ixgbe_rcv_msg_from_vf(adapter, vf);
1237
1238 /* process any acks */
1239 if (!ixgbe_check_for_ack(hw, vf))
1240 ixgbe_rcv_ack_from_vf(adapter, vf);
1241 }
1242 }
1243
1244 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1245 {
1246 struct ixgbe_hw *hw = &adapter->hw;
1247
1248 /* disable transmit and receive for all vfs */
1249 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1250 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1251
1252 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1253 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1254 }
1255
1256 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1257 {
1258 struct ixgbe_hw *hw = &adapter->hw;
1259 u32 ping;
1260
1261 ping = IXGBE_PF_CONTROL_MSG;
1262 if (adapter->vfinfo[vf].clear_to_send)
1263 ping |= IXGBE_VT_MSGTYPE_CTS;
1264 ixgbe_write_mbx(hw, &ping, 1, vf);
1265 }
1266
1267 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1268 {
1269 struct ixgbe_hw *hw = &adapter->hw;
1270 u32 ping;
1271 int i;
1272
1273 for (i = 0 ; i < adapter->num_vfs; i++) {
1274 ping = IXGBE_PF_CONTROL_MSG;
1275 if (adapter->vfinfo[i].clear_to_send)
1276 ping |= IXGBE_VT_MSGTYPE_CTS;
1277 ixgbe_write_mbx(hw, &ping, 1, i);
1278 }
1279 }
1280
1281 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1282 {
1283 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1284 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1285 return -EINVAL;
1286 adapter->vfinfo[vf].pf_set_mac = true;
1287 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1288 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1289 " change effective.");
1290 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1291 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1292 " but the PF device is not up.\n");
1293 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1294 " attempting to use the VF device.\n");
1295 }
1296 return ixgbe_set_vf_mac(adapter, vf, mac);
1297 }
1298
1299 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1300 u16 vlan, u8 qos)
1301 {
1302 struct ixgbe_hw *hw = &adapter->hw;
1303 int err;
1304
1305 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1306 if (err)
1307 goto out;
1308
1309 /* Revoke tagless access via VLAN 0 */
1310 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1311
1312 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1313 ixgbe_set_vmolr(hw, vf, false);
1314
1315 /* enable hide vlan on X550 */
1316 if (hw->mac.type >= ixgbe_mac_X550)
1317 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1318 IXGBE_QDE_HIDE_VLAN);
1319
1320 adapter->vfinfo[vf].pf_vlan = vlan;
1321 adapter->vfinfo[vf].pf_qos = qos;
1322 dev_info(&adapter->pdev->dev,
1323 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1324 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1325 dev_warn(&adapter->pdev->dev,
1326 "The VF VLAN has been set, but the PF device is not up.\n");
1327 dev_warn(&adapter->pdev->dev,
1328 "Bring the PF device up before attempting to use the VF device.\n");
1329 }
1330
1331 out:
1332 return err;
1333 }
1334
1335 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1336 {
1337 struct ixgbe_hw *hw = &adapter->hw;
1338 int err;
1339
1340 err = ixgbe_set_vf_vlan(adapter, false,
1341 adapter->vfinfo[vf].pf_vlan, vf);
1342 /* Restore tagless access via VLAN 0 */
1343 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1344 ixgbe_clear_vmvir(adapter, vf);
1345 ixgbe_set_vmolr(hw, vf, true);
1346
1347 /* disable hide VLAN on X550 */
1348 if (hw->mac.type >= ixgbe_mac_X550)
1349 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1350
1351 adapter->vfinfo[vf].pf_vlan = 0;
1352 adapter->vfinfo[vf].pf_qos = 0;
1353
1354 return err;
1355 }
1356
1357 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1358 {
1359 int err = 0;
1360 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1361
1362 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1363 return -EINVAL;
1364 if (vlan || qos) {
1365 /* Check if there is already a port VLAN set, if so
1366 * we have to delete the old one first before we
1367 * can set the new one. The usage model had
1368 * previously assumed the user would delete the
1369 * old port VLAN before setting a new one but this
1370 * is not necessarily the case.
1371 */
1372 if (adapter->vfinfo[vf].pf_vlan)
1373 err = ixgbe_disable_port_vlan(adapter, vf);
1374 if (err)
1375 goto out;
1376 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1377 } else {
1378 err = ixgbe_disable_port_vlan(adapter, vf);
1379 }
1380
1381 out:
1382 return err;
1383 }
1384
1385 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1386 {
1387 switch (adapter->link_speed) {
1388 case IXGBE_LINK_SPEED_100_FULL:
1389 return 100;
1390 case IXGBE_LINK_SPEED_1GB_FULL:
1391 return 1000;
1392 case IXGBE_LINK_SPEED_10GB_FULL:
1393 return 10000;
1394 default:
1395 return 0;
1396 }
1397 }
1398
1399 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1400 {
1401 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1402 struct ixgbe_hw *hw = &adapter->hw;
1403 u32 bcnrc_val = 0;
1404 u16 queue, queues_per_pool;
1405 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1406
1407 if (tx_rate) {
1408 /* start with base link speed value */
1409 bcnrc_val = adapter->vf_rate_link_speed;
1410
1411 /* Calculate the rate factor values to set */
1412 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1413 bcnrc_val /= tx_rate;
1414
1415 /* clear everything but the rate factor */
1416 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1417 IXGBE_RTTBCNRC_RF_DEC_MASK;
1418
1419 /* enable the rate scheduler */
1420 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1421 }
1422
1423 /*
1424 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1425 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1426 * and 0x004 otherwise.
1427 */
1428 switch (hw->mac.type) {
1429 case ixgbe_mac_82599EB:
1430 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1431 break;
1432 case ixgbe_mac_X540:
1433 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1434 break;
1435 default:
1436 break;
1437 }
1438
1439 /* determine how many queues per pool based on VMDq mask */
1440 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1441
1442 /* write value for all Tx queues belonging to VF */
1443 for (queue = 0; queue < queues_per_pool; queue++) {
1444 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1445
1446 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1447 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1448 }
1449 }
1450
1451 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1452 {
1453 int i;
1454
1455 /* VF Tx rate limit was not set */
1456 if (!adapter->vf_rate_link_speed)
1457 return;
1458
1459 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1460 adapter->vf_rate_link_speed = 0;
1461 dev_info(&adapter->pdev->dev,
1462 "Link speed has been changed. VF Transmit rate is disabled\n");
1463 }
1464
1465 for (i = 0; i < adapter->num_vfs; i++) {
1466 if (!adapter->vf_rate_link_speed)
1467 adapter->vfinfo[i].tx_rate = 0;
1468
1469 ixgbe_set_vf_rate_limit(adapter, i);
1470 }
1471 }
1472
1473 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1474 int max_tx_rate)
1475 {
1476 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1477 int link_speed;
1478
1479 /* verify VF is active */
1480 if (vf >= adapter->num_vfs)
1481 return -EINVAL;
1482
1483 /* verify link is up */
1484 if (!adapter->link_up)
1485 return -EINVAL;
1486
1487 /* verify we are linked at 10Gbps */
1488 link_speed = ixgbe_link_mbps(adapter);
1489 if (link_speed != 10000)
1490 return -EINVAL;
1491
1492 if (min_tx_rate)
1493 return -EINVAL;
1494
1495 /* rate limit cannot be less than 10Mbs or greater than link speed */
1496 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1497 return -EINVAL;
1498
1499 /* store values */
1500 adapter->vf_rate_link_speed = link_speed;
1501 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1502
1503 /* update hardware configuration */
1504 ixgbe_set_vf_rate_limit(adapter, vf);
1505
1506 return 0;
1507 }
1508
1509 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1510 {
1511 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1512 struct ixgbe_hw *hw = &adapter->hw;
1513
1514 if (vf >= adapter->num_vfs)
1515 return -EINVAL;
1516
1517 adapter->vfinfo[vf].spoofchk_enabled = setting;
1518
1519 /* configure MAC spoofing */
1520 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1521
1522 /* configure VLAN spoofing */
1523 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1524
1525 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1526 * calling set_ethertype_anti_spoofing for each VF in loop below
1527 */
1528 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1529 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1530 (IXGBE_ETQF_FILTER_EN |
1531 IXGBE_ETQF_TX_ANTISPOOF |
1532 IXGBE_ETH_P_LLDP));
1533
1534 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1535 (IXGBE_ETQF_FILTER_EN |
1536 IXGBE_ETQF_TX_ANTISPOOF |
1537 ETH_P_PAUSE));
1538
1539 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1540 }
1541
1542 return 0;
1543 }
1544
1545 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1546 bool setting)
1547 {
1548 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1549
1550 /* This operation is currently supported only for 82599 and x540
1551 * devices.
1552 */
1553 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1554 adapter->hw.mac.type >= ixgbe_mac_X550)
1555 return -EOPNOTSUPP;
1556
1557 if (vf >= adapter->num_vfs)
1558 return -EINVAL;
1559
1560 adapter->vfinfo[vf].rss_query_enabled = setting;
1561
1562 return 0;
1563 }
1564
1565 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1566 {
1567 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1568
1569 if (vf >= adapter->num_vfs)
1570 return -EINVAL;
1571
1572 /* nothing to do */
1573 if (adapter->vfinfo[vf].trusted == setting)
1574 return 0;
1575
1576 adapter->vfinfo[vf].trusted = setting;
1577
1578 /* reset VF to reconfigure features */
1579 adapter->vfinfo[vf].clear_to_send = false;
1580 ixgbe_ping_vf(adapter, vf);
1581
1582 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1583
1584 return 0;
1585 }
1586
1587 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1588 int vf, struct ifla_vf_info *ivi)
1589 {
1590 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1591 if (vf >= adapter->num_vfs)
1592 return -EINVAL;
1593 ivi->vf = vf;
1594 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1595 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1596 ivi->min_tx_rate = 0;
1597 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1598 ivi->qos = adapter->vfinfo[vf].pf_qos;
1599 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1600 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1601 ivi->trusted = adapter->vfinfo[vf].trusted;
1602 return 0;
1603 }
CRIS linux kernel tree