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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob27a70a52f3c9d9ee82b1f1e114eab4a3faa11e3c
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 inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,
50 unsigned int num_vfs)
51 {
52 struct ixgbe_hw *hw = &adapter->hw;
53 struct vf_macvlans *mv_list;
54 int num_vf_macvlans, i;
55
56 num_vf_macvlans = hw->mac.num_rar_entries -
57 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
58 if (!num_vf_macvlans)
59 return;
60
61 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
62 GFP_KERNEL);
63 if (mv_list) {
64 /* Initialize list of VF macvlans */
65 INIT_LIST_HEAD(&adapter->vf_mvs.l);
66 for (i = 0; i < num_vf_macvlans; i++) {
67 mv_list[i].vf = -1;
68 mv_list[i].free = true;
69 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
70 }
71 adapter->mv_list = mv_list;
72 }
73 }
74
75 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
76 unsigned int num_vfs)
77 {
78 struct ixgbe_hw *hw = &adapter->hw;
79 int i;
80
81 /* Enable VMDq flag so device will be set in VM mode */
82 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
83 IXGBE_FLAG_VMDQ_ENABLED;
84
85 /* Allocate memory for per VF control structures */
86 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
87 GFP_KERNEL);
88 if (!adapter->vfinfo)
89 return -ENOMEM;
90
91 adapter->num_vfs = num_vfs;
92
93 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
94 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
95
96 /* Initialize default switching mode VEB */
97 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
98 adapter->bridge_mode = BRIDGE_MODE_VEB;
99
100 /* limit trafffic classes based on VFs enabled */
101 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
102 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
103 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
104 } else if (num_vfs < 32) {
105 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
106 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
107 } else {
108 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
109 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
110 }
111
112 /* Disable RSC when in SR-IOV mode */
113 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
114 IXGBE_FLAG2_RSC_ENABLED);
115
116 for (i = 0; i < num_vfs; i++) {
117 /* enable spoof checking for all VFs */
118 adapter->vfinfo[i].spoofchk_enabled = true;
119
120 /* We support VF RSS querying only for 82599 and x540
121 * devices at the moment. These devices share RSS
122 * indirection table and RSS hash key with PF therefore
123 * we want to disable the querying by default.
124 */
125 adapter->vfinfo[i].rss_query_enabled = 0;
126
127 /* Untrust all VFs */
128 adapter->vfinfo[i].trusted = false;
129
130 /* set the default xcast mode */
131 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
132 }
133
134 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
135 return 0;
136 }
137
138 /**
139 * ixgbe_get_vfs - Find and take references to all vf devices
140 * @adapter: Pointer to adapter struct
141 */
142 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
143 {
144 struct pci_dev *pdev = adapter->pdev;
145 u16 vendor = pdev->vendor;
146 struct pci_dev *vfdev;
147 int vf = 0;
148 u16 vf_id;
149 int pos;
150
151 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
152 if (!pos)
153 return;
154 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
155
156 vfdev = pci_get_device(vendor, vf_id, NULL);
157 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
158 if (!vfdev->is_virtfn)
159 continue;
160 if (vfdev->physfn != pdev)
161 continue;
162 if (vf >= adapter->num_vfs)
163 continue;
164 pci_dev_get(vfdev);
165 adapter->vfinfo[vf].vfdev = vfdev;
166 ++vf;
167 }
168 }
169
170 /* Note this function is called when the user wants to enable SR-IOV
171 * VFs using the now deprecated module parameter
172 */
173 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
174 {
175 int pre_existing_vfs = 0;
176 unsigned int num_vfs;
177
178 pre_existing_vfs = pci_num_vf(adapter->pdev);
179 if (!pre_existing_vfs && !max_vfs)
180 return;
181
182 /* If there are pre-existing VFs then we have to force
183 * use of that many - over ride any module parameter value.
184 * This may result from the user unloading the PF driver
185 * while VFs were assigned to guest VMs or because the VFs
186 * have been created via the new PCI SR-IOV sysfs interface.
187 */
188 if (pre_existing_vfs) {
189 num_vfs = pre_existing_vfs;
190 dev_warn(&adapter->pdev->dev,
191 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
192 } else {
193 int err;
194 /*
195 * The 82599 supports up to 64 VFs per physical function
196 * but this implementation limits allocation to 63 so that
197 * basic networking resources are still available to the
198 * physical function. If the user requests greater than
199 * 63 VFs then it is an error - reset to default of zero.
200 */
201 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
202
203 err = pci_enable_sriov(adapter->pdev, num_vfs);
204 if (err) {
205 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
206 return;
207 }
208 }
209
210 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
211 ixgbe_get_vfs(adapter);
212 return;
213 }
214
215 /* If we have gotten to this point then there is no memory available
216 * to manage the VF devices - print message and bail.
217 */
218 e_err(probe, "Unable to allocate memory for VF Data Storage - "
219 "SRIOV disabled\n");
220 ixgbe_disable_sriov(adapter);
221 }
222
223 #endif /* #ifdef CONFIG_PCI_IOV */
224 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
225 {
226 unsigned int num_vfs = adapter->num_vfs, vf;
227 int rss;
228
229 /* set num VFs to 0 to prevent access to vfinfo */
230 adapter->num_vfs = 0;
231
232 /* put the reference to all of the vf devices */
233 for (vf = 0; vf < num_vfs; ++vf) {
234 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
235
236 if (!vfdev)
237 continue;
238 adapter->vfinfo[vf].vfdev = NULL;
239 pci_dev_put(vfdev);
240 }
241
242 /* free VF control structures */
243 kfree(adapter->vfinfo);
244 adapter->vfinfo = NULL;
245
246 /* free macvlan list */
247 kfree(adapter->mv_list);
248 adapter->mv_list = NULL;
249
250 /* if SR-IOV is already disabled then there is nothing to do */
251 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
252 return 0;
253
254 #ifdef CONFIG_PCI_IOV
255 /*
256 * If our VFs are assigned we cannot shut down SR-IOV
257 * without causing issues, so just leave the hardware
258 * available but disabled
259 */
260 if (pci_vfs_assigned(adapter->pdev)) {
261 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
262 return -EPERM;
263 }
264 /* disable iov and allow time for transactions to clear */
265 pci_disable_sriov(adapter->pdev);
266 #endif
267
268 /* Disable VMDq flag so device will be set in VM mode */
269 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
270 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
271 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
272 rss = min_t(int, ixgbe_max_rss_indices(adapter),
273 num_online_cpus());
274 } else {
275 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
276 }
277
278 adapter->ring_feature[RING_F_VMDQ].offset = 0;
279 adapter->ring_feature[RING_F_RSS].limit = rss;
280
281 /* take a breather then clean up driver data */
282 msleep(100);
283 return 0;
284 }
285
286 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
287 {
288 #ifdef CONFIG_PCI_IOV
289 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
290 int pre_existing_vfs = pci_num_vf(dev);
291 int err = 0, num_rx_pools, i, limit;
292 u8 num_tc;
293
294 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
295 err = ixgbe_disable_sriov(adapter);
296 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
297 return num_vfs;
298
299 if (err)
300 return err;
301
302 /* While the SR-IOV capability structure reports total VFs to be 64,
303 * we limit the actual number allocated as below based on two factors.
304 * Num_TCs MAX_VFs
305 * 1 63
306 * <=4 31
307 * >4 15
308 * First, we reserve some transmit/receive resources for the PF.
309 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
310 * account for this, so that we don't accidentally allocate more VFs
311 * than we have available pools. The PCI bus driver already checks for
312 * other values out of range.
313 */
314 num_tc = adapter->hw_tcs;
315 num_rx_pools = adapter->num_rx_pools;
316 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
317 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
318
319 if (num_vfs > (limit - num_rx_pools)) {
320 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
321 num_tc, num_rx_pools - 1, limit - num_rx_pools);
322 return -EPERM;
323 }
324
325 err = __ixgbe_enable_sriov(adapter, num_vfs);
326 if (err)
327 return err;
328
329 for (i = 0; i < num_vfs; i++)
330 ixgbe_vf_configuration(dev, (i | 0x10000000));
331
332 /* reset before enabling SRIOV to avoid mailbox issues */
333 ixgbe_sriov_reinit(adapter);
334
335 err = pci_enable_sriov(dev, num_vfs);
336 if (err) {
337 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
338 return err;
339 }
340 ixgbe_get_vfs(adapter);
341
342 return num_vfs;
343 #else
344 return 0;
345 #endif
346 }
347
348 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
349 {
350 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
351 int err;
352 #ifdef CONFIG_PCI_IOV
353 u32 current_flags = adapter->flags;
354 int prev_num_vf = pci_num_vf(dev);
355 #endif
356
357 err = ixgbe_disable_sriov(adapter);
358
359 /* Only reinit if no error and state changed */
360 #ifdef CONFIG_PCI_IOV
361 if (!err && (current_flags != adapter->flags ||
362 prev_num_vf != pci_num_vf(dev)))
363 ixgbe_sriov_reinit(adapter);
364 #endif
365
366 return err;
367 }
368
369 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
370 {
371 if (num_vfs == 0)
372 return ixgbe_pci_sriov_disable(dev);
373 else
374 return ixgbe_pci_sriov_enable(dev, num_vfs);
375 }
376
377 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
378 u32 *msgbuf, u32 vf)
379 {
380 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
381 >> IXGBE_VT_MSGINFO_SHIFT;
382 u16 *hash_list = (u16 *)&msgbuf[1];
383 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
384 struct ixgbe_hw *hw = &adapter->hw;
385 int i;
386 u32 vector_bit;
387 u32 vector_reg;
388 u32 mta_reg;
389 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
390
391 /* only so many hash values supported */
392 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
393
394 /*
395 * salt away the number of multi cast addresses assigned
396 * to this VF for later use to restore when the PF multi cast
397 * list changes
398 */
399 vfinfo->num_vf_mc_hashes = entries;
400
401 /*
402 * VFs are limited to using the MTA hash table for their multicast
403 * addresses
404 */
405 for (i = 0; i < entries; i++) {
406 vfinfo->vf_mc_hashes[i] = hash_list[i];
407 }
408
409 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
410 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
411 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
412 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
413 mta_reg |= BIT(vector_bit);
414 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
415 }
416 vmolr |= IXGBE_VMOLR_ROMPE;
417 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
418
419 return 0;
420 }
421
422 #ifdef CONFIG_PCI_IOV
423 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
424 {
425 struct ixgbe_hw *hw = &adapter->hw;
426 struct vf_data_storage *vfinfo;
427 int i, j;
428 u32 vector_bit;
429 u32 vector_reg;
430 u32 mta_reg;
431
432 for (i = 0; i < adapter->num_vfs; i++) {
433 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
434 vfinfo = &adapter->vfinfo[i];
435 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
436 hw->addr_ctrl.mta_in_use++;
437 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
438 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
439 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
440 mta_reg |= BIT(vector_bit);
441 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
442 }
443
444 if (vfinfo->num_vf_mc_hashes)
445 vmolr |= IXGBE_VMOLR_ROMPE;
446 else
447 vmolr &= ~IXGBE_VMOLR_ROMPE;
448 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
449 }
450
451 /* Restore any VF macvlans */
452 ixgbe_full_sync_mac_table(adapter);
453 }
454 #endif
455
456 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
457 u32 vf)
458 {
459 struct ixgbe_hw *hw = &adapter->hw;
460 int err;
461
462 /* If VLAN overlaps with one the PF is currently monitoring make
463 * sure that we are able to allocate a VLVF entry. This may be
464 * redundant but it guarantees PF will maintain visibility to
465 * the VLAN.
466 */
467 if (add && test_bit(vid, adapter->active_vlans)) {
468 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
469 if (err)
470 return err;
471 }
472
473 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
474
475 if (add && !err)
476 return err;
477
478 /* If we failed to add the VF VLAN or we are removing the VF VLAN
479 * we may need to drop the PF pool bit in order to allow us to free
480 * up the VLVF resources.
481 */
482 if (test_bit(vid, adapter->active_vlans) ||
483 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
484 ixgbe_update_pf_promisc_vlvf(adapter, vid);
485
486 return err;
487 }
488
489 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
490 {
491 struct ixgbe_hw *hw = &adapter->hw;
492 int max_frame = msgbuf[1];
493 u32 max_frs;
494
495 /*
496 * For 82599EB we have to keep all PFs and VFs operating with
497 * the same max_frame value in order to avoid sending an oversize
498 * frame to a VF. In order to guarantee this is handled correctly
499 * for all cases we have several special exceptions to take into
500 * account before we can enable the VF for receive
501 */
502 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
503 struct net_device *dev = adapter->netdev;
504 int pf_max_frame = dev->mtu + ETH_HLEN;
505 u32 reg_offset, vf_shift, vfre;
506 s32 err = 0;
507
508 #ifdef CONFIG_FCOE
509 if (dev->features & NETIF_F_FCOE_MTU)
510 pf_max_frame = max_t(int, pf_max_frame,
511 IXGBE_FCOE_JUMBO_FRAME_SIZE);
512
513 #endif /* CONFIG_FCOE */
514 switch (adapter->vfinfo[vf].vf_api) {
515 case ixgbe_mbox_api_11:
516 case ixgbe_mbox_api_12:
517 case ixgbe_mbox_api_13:
518 /* Version 1.1 supports jumbo frames on VFs if PF has
519 * jumbo frames enabled which means legacy VFs are
520 * disabled
521 */
522 if (pf_max_frame > ETH_FRAME_LEN)
523 break;
524 /* fall through */
525 default:
526 /* If the PF or VF are running w/ jumbo frames enabled
527 * we need to shut down the VF Rx path as we cannot
528 * support jumbo frames on legacy VFs
529 */
530 if ((pf_max_frame > ETH_FRAME_LEN) ||
531 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
532 err = -EINVAL;
533 break;
534 }
535
536 /* determine VF receive enable location */
537 vf_shift = vf % 32;
538 reg_offset = vf / 32;
539
540 /* enable or disable receive depending on error */
541 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
542 if (err)
543 vfre &= ~BIT(vf_shift);
544 else
545 vfre |= BIT(vf_shift);
546 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
547
548 if (err) {
549 e_err(drv, "VF max_frame %d out of range\n", max_frame);
550 return err;
551 }
552 }
553
554 /* MTU < 68 is an error and causes problems on some kernels */
555 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
556 e_err(drv, "VF max_frame %d out of range\n", max_frame);
557 return -EINVAL;
558 }
559
560 /* pull current max frame size from hardware */
561 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
562 max_frs &= IXGBE_MHADD_MFS_MASK;
563 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
564
565 if (max_frs < max_frame) {
566 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
567 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
568 }
569
570 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
571
572 return 0;
573 }
574
575 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
576 {
577 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
578 vmolr |= IXGBE_VMOLR_BAM;
579 if (aupe)
580 vmolr |= IXGBE_VMOLR_AUPE;
581 else
582 vmolr &= ~IXGBE_VMOLR_AUPE;
583 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
584 }
585
586 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
587 {
588 struct ixgbe_hw *hw = &adapter->hw;
589
590 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
591 }
592
593 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
594 {
595 struct ixgbe_hw *hw = &adapter->hw;
596 u32 vlvfb_mask, pool_mask, i;
597
598 /* create mask for VF and other pools */
599 pool_mask = ~BIT(VMDQ_P(0) % 32);
600 vlvfb_mask = BIT(vf % 32);
601
602 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
603 for (i = IXGBE_VLVF_ENTRIES; i--;) {
604 u32 bits[2], vlvfb, vid, vfta, vlvf;
605 u32 word = i * 2 + vf / 32;
606 u32 mask;
607
608 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
609
610 /* if our bit isn't set we can skip it */
611 if (!(vlvfb & vlvfb_mask))
612 continue;
613
614 /* clear our bit from vlvfb */
615 vlvfb ^= vlvfb_mask;
616
617 /* create 64b mask to chedk to see if we should clear VLVF */
618 bits[word % 2] = vlvfb;
619 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
620
621 /* if other pools are present, just remove ourselves */
622 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
623 (bits[VMDQ_P(0) / 32] & pool_mask))
624 goto update_vlvfb;
625
626 /* if PF is present, leave VFTA */
627 if (bits[0] || bits[1])
628 goto update_vlvf;
629
630 /* if we cannot determine VLAN just remove ourselves */
631 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
632 if (!vlvf)
633 goto update_vlvfb;
634
635 vid = vlvf & VLAN_VID_MASK;
636 mask = BIT(vid % 32);
637
638 /* clear bit from VFTA */
639 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
640 if (vfta & mask)
641 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
642 update_vlvf:
643 /* clear POOL selection enable */
644 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
645
646 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
647 vlvfb = 0;
648 update_vlvfb:
649 /* clear pool bits */
650 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
651 }
652 }
653
654 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
655 int vf, int index, unsigned char *mac_addr)
656 {
657 struct vf_macvlans *entry;
658 struct list_head *pos;
659 int retval = 0;
660
661 if (index <= 1) {
662 list_for_each(pos, &adapter->vf_mvs.l) {
663 entry = list_entry(pos, struct vf_macvlans, l);
664 if (entry->vf == vf) {
665 entry->vf = -1;
666 entry->free = true;
667 entry->is_macvlan = false;
668 ixgbe_del_mac_filter(adapter,
669 entry->vf_macvlan, vf);
670 }
671 }
672 }
673
674 /*
675 * If index was zero then we were asked to clear the uc list
676 * for the VF. We're done.
677 */
678 if (!index)
679 return 0;
680
681 entry = NULL;
682
683 list_for_each(pos, &adapter->vf_mvs.l) {
684 entry = list_entry(pos, struct vf_macvlans, l);
685 if (entry->free)
686 break;
687 }
688
689 /*
690 * If we traversed the entire list and didn't find a free entry
691 * then we're out of space on the RAR table. Also entry may
692 * be NULL because the original memory allocation for the list
693 * failed, which is not fatal but does mean we can't support
694 * VF requests for MACVLAN because we couldn't allocate
695 * memory for the list management required.
696 */
697 if (!entry || !entry->free)
698 return -ENOSPC;
699
700 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
701 if (retval < 0)
702 return retval;
703
704 entry->free = false;
705 entry->is_macvlan = true;
706 entry->vf = vf;
707 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
708
709 return 0;
710 }
711
712 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
713 {
714 struct ixgbe_hw *hw = &adapter->hw;
715 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
716 u8 num_tcs = adapter->hw_tcs;
717
718 /* remove VLAN filters beloning to this VF */
719 ixgbe_clear_vf_vlans(adapter, vf);
720
721 /* add back PF assigned VLAN or VLAN 0 */
722 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
723
724 /* reset offloads to defaults */
725 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
726
727 /* set outgoing tags for VFs */
728 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
729 ixgbe_clear_vmvir(adapter, vf);
730 } else {
731 if (vfinfo->pf_qos || !num_tcs)
732 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
733 vfinfo->pf_qos, vf);
734 else
735 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
736 adapter->default_up, vf);
737
738 if (vfinfo->spoofchk_enabled)
739 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
740 }
741
742 /* reset multicast table array for vf */
743 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
744
745 /* Flush and reset the mta with the new values */
746 ixgbe_set_rx_mode(adapter->netdev);
747
748 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
749 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
750
751 /* reset VF api back to unknown */
752 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
753 }
754
755 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
756 int vf, unsigned char *mac_addr)
757 {
758 s32 retval;
759
760 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
761 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
762 if (retval >= 0)
763 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
764 ETH_ALEN);
765 else
766 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN);
767
768 return retval;
769 }
770
771 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
772 {
773 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
774 unsigned int vfn = (event_mask & 0x3f);
775
776 bool enable = ((event_mask & 0x10000000U) != 0);
777
778 if (enable)
779 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
780
781 return 0;
782 }
783
784 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
785 u32 qde)
786 {
787 struct ixgbe_hw *hw = &adapter->hw;
788 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
789 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
790 int i;
791
792 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
793 u32 reg;
794
795 /* flush previous write */
796 IXGBE_WRITE_FLUSH(hw);
797
798 /* indicate to hardware that we want to set drop enable */
799 reg = IXGBE_QDE_WRITE | qde;
800 reg |= i << IXGBE_QDE_IDX_SHIFT;
801 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
802 }
803 }
804
805 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
806 {
807 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
808 struct ixgbe_hw *hw = &adapter->hw;
809 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
810 u32 reg, reg_offset, vf_shift;
811 u32 msgbuf[4] = {0, 0, 0, 0};
812 u8 *addr = (u8 *)(&msgbuf[1]);
813 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
814 int i;
815
816 e_info(probe, "VF Reset msg received from vf %d\n", vf);
817
818 /* reset the filters for the device */
819 ixgbe_vf_reset_event(adapter, vf);
820
821 /* set vf mac address */
822 if (!is_zero_ether_addr(vf_mac))
823 ixgbe_set_vf_mac(adapter, vf, vf_mac);
824
825 vf_shift = vf % 32;
826 reg_offset = vf / 32;
827
828 /* enable transmit for vf */
829 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
830 reg |= BIT(vf_shift);
831 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
832
833 /* force drop enable for all VF Rx queues */
834 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
835
836 /* enable receive for vf */
837 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
838 reg |= BIT(vf_shift);
839 /*
840 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
841 * For more info take a look at ixgbe_set_vf_lpe
842 */
843 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
844 struct net_device *dev = adapter->netdev;
845 int pf_max_frame = dev->mtu + ETH_HLEN;
846
847 #ifdef CONFIG_FCOE
848 if (dev->features & NETIF_F_FCOE_MTU)
849 pf_max_frame = max_t(int, pf_max_frame,
850 IXGBE_FCOE_JUMBO_FRAME_SIZE);
851
852 #endif /* CONFIG_FCOE */
853 if (pf_max_frame > ETH_FRAME_LEN)
854 reg &= ~BIT(vf_shift);
855 }
856 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
857
858 /* enable VF mailbox for further messages */
859 adapter->vfinfo[vf].clear_to_send = true;
860
861 /* Enable counting of spoofed packets in the SSVPC register */
862 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
863 reg |= BIT(vf_shift);
864 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
865
866 /*
867 * Reset the VFs TDWBAL and TDWBAH registers
868 * which are not cleared by an FLR
869 */
870 for (i = 0; i < q_per_pool; i++) {
871 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
872 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
873 }
874
875 /* reply to reset with ack and vf mac address */
876 msgbuf[0] = IXGBE_VF_RESET;
877 if (!is_zero_ether_addr(vf_mac)) {
878 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
879 memcpy(addr, vf_mac, ETH_ALEN);
880 } else {
881 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
882 dev_warn(&adapter->pdev->dev,
883 "VF %d has no MAC address assigned, you may have to assign one manually\n",
884 vf);
885 }
886
887 /*
888 * Piggyback the multicast filter type so VF can compute the
889 * correct vectors
890 */
891 msgbuf[3] = hw->mac.mc_filter_type;
892 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
893
894 return 0;
895 }
896
897 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
898 u32 *msgbuf, u32 vf)
899 {
900 u8 *new_mac = ((u8 *)(&msgbuf[1]));
901
902 if (!is_valid_ether_addr(new_mac)) {
903 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
904 return -1;
905 }
906
907 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
908 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
909 e_warn(drv,
910 "VF %d attempted to override administratively set MAC address\n"
911 "Reload the VF driver to resume operations\n",
912 vf);
913 return -1;
914 }
915
916 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
917 }
918
919 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
920 u32 *msgbuf, u32 vf)
921 {
922 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
923 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
924 u8 tcs = adapter->hw_tcs;
925
926 if (adapter->vfinfo[vf].pf_vlan || tcs) {
927 e_warn(drv,
928 "VF %d attempted to override administratively set VLAN configuration\n"
929 "Reload the VF driver to resume operations\n",
930 vf);
931 return -1;
932 }
933
934 /* VLAN 0 is a special case, don't allow it to be removed */
935 if (!vid && !add)
936 return 0;
937
938 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
939 }
940
941 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
942 u32 *msgbuf, u32 vf)
943 {
944 u8 *new_mac = ((u8 *)(&msgbuf[1]));
945 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
946 IXGBE_VT_MSGINFO_SHIFT;
947 int err;
948
949 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
950 index > 0) {
951 e_warn(drv,
952 "VF %d requested MACVLAN filter but is administratively denied\n",
953 vf);
954 return -1;
955 }
956
957 /* An non-zero index indicates the VF is setting a filter */
958 if (index) {
959 if (!is_valid_ether_addr(new_mac)) {
960 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
961 return -1;
962 }
963
964 /*
965 * If the VF is allowed to set MAC filters then turn off
966 * anti-spoofing to avoid false positives.
967 */
968 if (adapter->vfinfo[vf].spoofchk_enabled) {
969 struct ixgbe_hw *hw = &adapter->hw;
970
971 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
972 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
973 }
974 }
975
976 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
977 if (err == -ENOSPC)
978 e_warn(drv,
979 "VF %d has requested a MACVLAN filter but there is no space for it\n",
980 vf);
981
982 return err < 0;
983 }
984
985 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
986 u32 *msgbuf, u32 vf)
987 {
988 int api = msgbuf[1];
989
990 switch (api) {
991 case ixgbe_mbox_api_10:
992 case ixgbe_mbox_api_11:
993 case ixgbe_mbox_api_12:
994 case ixgbe_mbox_api_13:
995 adapter->vfinfo[vf].vf_api = api;
996 return 0;
997 default:
998 break;
999 }
1000
1001 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1002
1003 return -1;
1004 }
1005
1006 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1007 u32 *msgbuf, u32 vf)
1008 {
1009 struct net_device *dev = adapter->netdev;
1010 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1011 unsigned int default_tc = 0;
1012 u8 num_tcs = adapter->hw_tcs;
1013
1014 /* verify the PF is supporting the correct APIs */
1015 switch (adapter->vfinfo[vf].vf_api) {
1016 case ixgbe_mbox_api_20:
1017 case ixgbe_mbox_api_11:
1018 case ixgbe_mbox_api_12:
1019 case ixgbe_mbox_api_13:
1020 break;
1021 default:
1022 return -1;
1023 }
1024
1025 /* only allow 1 Tx queue for bandwidth limiting */
1026 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1027 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1028
1029 /* if TCs > 1 determine which TC belongs to default user priority */
1030 if (num_tcs > 1)
1031 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1032
1033 /* notify VF of need for VLAN tag stripping, and correct queue */
1034 if (num_tcs)
1035 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1036 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1037 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1038 else
1039 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1040
1041 /* notify VF of default queue */
1042 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1043
1044 return 0;
1045 }
1046
1047 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1048 {
1049 u32 i, j;
1050 u32 *out_buf = &msgbuf[1];
1051 const u8 *reta = adapter->rss_indir_tbl;
1052 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1053
1054 /* Check if operation is permitted */
1055 if (!adapter->vfinfo[vf].rss_query_enabled)
1056 return -EPERM;
1057
1058 /* verify the PF is supporting the correct API */
1059 switch (adapter->vfinfo[vf].vf_api) {
1060 case ixgbe_mbox_api_13:
1061 case ixgbe_mbox_api_12:
1062 break;
1063 default:
1064 return -EOPNOTSUPP;
1065 }
1066
1067 /* This mailbox command is supported (required) only for 82599 and x540
1068 * VFs which support up to 4 RSS queues. Therefore we will compress the
1069 * RETA by saving only 2 bits from each entry. This way we will be able
1070 * to transfer the whole RETA in a single mailbox operation.
1071 */
1072 for (i = 0; i < reta_size / 16; i++) {
1073 out_buf[i] = 0;
1074 for (j = 0; j < 16; j++)
1075 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1076 }
1077
1078 return 0;
1079 }
1080
1081 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1082 u32 *msgbuf, u32 vf)
1083 {
1084 u32 *rss_key = &msgbuf[1];
1085
1086 /* Check if the operation is permitted */
1087 if (!adapter->vfinfo[vf].rss_query_enabled)
1088 return -EPERM;
1089
1090 /* verify the PF is supporting the correct API */
1091 switch (adapter->vfinfo[vf].vf_api) {
1092 case ixgbe_mbox_api_13:
1093 case ixgbe_mbox_api_12:
1094 break;
1095 default:
1096 return -EOPNOTSUPP;
1097 }
1098
1099 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1100
1101 return 0;
1102 }
1103
1104 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1105 u32 *msgbuf, u32 vf)
1106 {
1107 struct ixgbe_hw *hw = &adapter->hw;
1108 int xcast_mode = msgbuf[1];
1109 u32 vmolr, fctrl, disable, enable;
1110
1111 /* verify the PF is supporting the correct APIs */
1112 switch (adapter->vfinfo[vf].vf_api) {
1113 case ixgbe_mbox_api_12:
1114 /* promisc introduced in 1.3 version */
1115 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1116 return -EOPNOTSUPP;
1117 /* Fall threw */
1118 case ixgbe_mbox_api_13:
1119 break;
1120 default:
1121 return -EOPNOTSUPP;
1122 }
1123
1124 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1125 !adapter->vfinfo[vf].trusted) {
1126 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1127 }
1128
1129 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1130 goto out;
1131
1132 switch (xcast_mode) {
1133 case IXGBEVF_XCAST_MODE_NONE:
1134 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1135 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1136 enable = 0;
1137 break;
1138 case IXGBEVF_XCAST_MODE_MULTI:
1139 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1140 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1141 break;
1142 case IXGBEVF_XCAST_MODE_ALLMULTI:
1143 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1144 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1145 break;
1146 case IXGBEVF_XCAST_MODE_PROMISC:
1147 if (hw->mac.type <= ixgbe_mac_82599EB)
1148 return -EOPNOTSUPP;
1149
1150 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1151 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1152 /* VF promisc requires PF in promisc */
1153 e_warn(drv,
1154 "Enabling VF promisc requires PF in promisc\n");
1155 return -EPERM;
1156 }
1157
1158 disable = 0;
1159 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1160 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1161 break;
1162 default:
1163 return -EOPNOTSUPP;
1164 }
1165
1166 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1167 vmolr &= ~disable;
1168 vmolr |= enable;
1169 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1170
1171 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1172
1173 out:
1174 msgbuf[1] = xcast_mode;
1175
1176 return 0;
1177 }
1178
1179 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1180 {
1181 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1182 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1183 struct ixgbe_hw *hw = &adapter->hw;
1184 s32 retval;
1185
1186 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1187
1188 if (retval) {
1189 pr_err("Error receiving message from VF\n");
1190 return retval;
1191 }
1192
1193 /* this is a message we already processed, do nothing */
1194 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1195 return 0;
1196
1197 /* flush the ack before we write any messages back */
1198 IXGBE_WRITE_FLUSH(hw);
1199
1200 if (msgbuf[0] == IXGBE_VF_RESET)
1201 return ixgbe_vf_reset_msg(adapter, vf);
1202
1203 /*
1204 * until the vf completes a virtual function reset it should not be
1205 * allowed to start any configuration.
1206 */
1207 if (!adapter->vfinfo[vf].clear_to_send) {
1208 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1209 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1210 return 0;
1211 }
1212
1213 switch ((msgbuf[0] & 0xFFFF)) {
1214 case IXGBE_VF_SET_MAC_ADDR:
1215 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1216 break;
1217 case IXGBE_VF_SET_MULTICAST:
1218 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1219 break;
1220 case IXGBE_VF_SET_VLAN:
1221 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1222 break;
1223 case IXGBE_VF_SET_LPE:
1224 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1225 break;
1226 case IXGBE_VF_SET_MACVLAN:
1227 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1228 break;
1229 case IXGBE_VF_API_NEGOTIATE:
1230 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1231 break;
1232 case IXGBE_VF_GET_QUEUES:
1233 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1234 break;
1235 case IXGBE_VF_GET_RETA:
1236 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1237 break;
1238 case IXGBE_VF_GET_RSS_KEY:
1239 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1240 break;
1241 case IXGBE_VF_UPDATE_XCAST_MODE:
1242 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1243 break;
1244 default:
1245 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1246 retval = IXGBE_ERR_MBX;
1247 break;
1248 }
1249
1250 /* notify the VF of the results of what it sent us */
1251 if (retval)
1252 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1253 else
1254 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1255
1256 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1257
1258 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1259
1260 return retval;
1261 }
1262
1263 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1264 {
1265 struct ixgbe_hw *hw = &adapter->hw;
1266 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1267
1268 /* if device isn't clear to send it shouldn't be reading either */
1269 if (!adapter->vfinfo[vf].clear_to_send)
1270 ixgbe_write_mbx(hw, &msg, 1, vf);
1271 }
1272
1273 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1274 {
1275 struct ixgbe_hw *hw = &adapter->hw;
1276 u32 vf;
1277
1278 for (vf = 0; vf < adapter->num_vfs; vf++) {
1279 /* process any reset requests */
1280 if (!ixgbe_check_for_rst(hw, vf))
1281 ixgbe_vf_reset_event(adapter, vf);
1282
1283 /* process any messages pending */
1284 if (!ixgbe_check_for_msg(hw, vf))
1285 ixgbe_rcv_msg_from_vf(adapter, vf);
1286
1287 /* process any acks */
1288 if (!ixgbe_check_for_ack(hw, vf))
1289 ixgbe_rcv_ack_from_vf(adapter, vf);
1290 }
1291 }
1292
1293 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1294 {
1295 struct ixgbe_hw *hw = &adapter->hw;
1296
1297 /* disable transmit and receive for all vfs */
1298 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1299 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1300
1301 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1302 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1303 }
1304
1305 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1306 {
1307 struct ixgbe_hw *hw = &adapter->hw;
1308 u32 ping;
1309
1310 ping = IXGBE_PF_CONTROL_MSG;
1311 if (adapter->vfinfo[vf].clear_to_send)
1312 ping |= IXGBE_VT_MSGTYPE_CTS;
1313 ixgbe_write_mbx(hw, &ping, 1, vf);
1314 }
1315
1316 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1317 {
1318 struct ixgbe_hw *hw = &adapter->hw;
1319 u32 ping;
1320 int i;
1321
1322 for (i = 0 ; i < adapter->num_vfs; i++) {
1323 ping = IXGBE_PF_CONTROL_MSG;
1324 if (adapter->vfinfo[i].clear_to_send)
1325 ping |= IXGBE_VT_MSGTYPE_CTS;
1326 ixgbe_write_mbx(hw, &ping, 1, i);
1327 }
1328 }
1329
1330 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1331 {
1332 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1333 s32 retval;
1334
1335 if (vf >= adapter->num_vfs)
1336 return -EINVAL;
1337
1338 if (is_valid_ether_addr(mac)) {
1339 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1340 mac, vf);
1341 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1342
1343 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1344 if (retval >= 0) {
1345 adapter->vfinfo[vf].pf_set_mac = true;
1346
1347 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1348 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1349 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1350 }
1351 } else {
1352 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1353 }
1354 } else if (is_zero_ether_addr(mac)) {
1355 unsigned char *vf_mac_addr =
1356 adapter->vfinfo[vf].vf_mac_addresses;
1357
1358 /* nothing to do */
1359 if (is_zero_ether_addr(vf_mac_addr))
1360 return 0;
1361
1362 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1363
1364 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1365 if (retval >= 0) {
1366 adapter->vfinfo[vf].pf_set_mac = false;
1367 memcpy(vf_mac_addr, mac, ETH_ALEN);
1368 } else {
1369 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1370 }
1371 } else {
1372 retval = -EINVAL;
1373 }
1374
1375 return retval;
1376 }
1377
1378 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1379 u16 vlan, u8 qos)
1380 {
1381 struct ixgbe_hw *hw = &adapter->hw;
1382 int err;
1383
1384 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1385 if (err)
1386 goto out;
1387
1388 /* Revoke tagless access via VLAN 0 */
1389 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1390
1391 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1392 ixgbe_set_vmolr(hw, vf, false);
1393
1394 /* enable hide vlan on X550 */
1395 if (hw->mac.type >= ixgbe_mac_X550)
1396 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1397 IXGBE_QDE_HIDE_VLAN);
1398
1399 adapter->vfinfo[vf].pf_vlan = vlan;
1400 adapter->vfinfo[vf].pf_qos = qos;
1401 dev_info(&adapter->pdev->dev,
1402 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1403 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1404 dev_warn(&adapter->pdev->dev,
1405 "The VF VLAN has been set, but the PF device is not up.\n");
1406 dev_warn(&adapter->pdev->dev,
1407 "Bring the PF device up before attempting to use the VF device.\n");
1408 }
1409
1410 out:
1411 return err;
1412 }
1413
1414 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1415 {
1416 struct ixgbe_hw *hw = &adapter->hw;
1417 int err;
1418
1419 err = ixgbe_set_vf_vlan(adapter, false,
1420 adapter->vfinfo[vf].pf_vlan, vf);
1421 /* Restore tagless access via VLAN 0 */
1422 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1423 ixgbe_clear_vmvir(adapter, vf);
1424 ixgbe_set_vmolr(hw, vf, true);
1425
1426 /* disable hide VLAN on X550 */
1427 if (hw->mac.type >= ixgbe_mac_X550)
1428 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1429
1430 adapter->vfinfo[vf].pf_vlan = 0;
1431 adapter->vfinfo[vf].pf_qos = 0;
1432
1433 return err;
1434 }
1435
1436 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1437 u8 qos, __be16 vlan_proto)
1438 {
1439 int err = 0;
1440 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1441
1442 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1443 return -EINVAL;
1444 if (vlan_proto != htons(ETH_P_8021Q))
1445 return -EPROTONOSUPPORT;
1446 if (vlan || qos) {
1447 /* Check if there is already a port VLAN set, if so
1448 * we have to delete the old one first before we
1449 * can set the new one. The usage model had
1450 * previously assumed the user would delete the
1451 * old port VLAN before setting a new one but this
1452 * is not necessarily the case.
1453 */
1454 if (adapter->vfinfo[vf].pf_vlan)
1455 err = ixgbe_disable_port_vlan(adapter, vf);
1456 if (err)
1457 goto out;
1458 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1459 } else {
1460 err = ixgbe_disable_port_vlan(adapter, vf);
1461 }
1462
1463 out:
1464 return err;
1465 }
1466
1467 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1468 {
1469 switch (adapter->link_speed) {
1470 case IXGBE_LINK_SPEED_100_FULL:
1471 return 100;
1472 case IXGBE_LINK_SPEED_1GB_FULL:
1473 return 1000;
1474 case IXGBE_LINK_SPEED_10GB_FULL:
1475 return 10000;
1476 default:
1477 return 0;
1478 }
1479 }
1480
1481 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1482 {
1483 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1484 struct ixgbe_hw *hw = &adapter->hw;
1485 u32 bcnrc_val = 0;
1486 u16 queue, queues_per_pool;
1487 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1488
1489 if (tx_rate) {
1490 /* start with base link speed value */
1491 bcnrc_val = adapter->vf_rate_link_speed;
1492
1493 /* Calculate the rate factor values to set */
1494 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1495 bcnrc_val /= tx_rate;
1496
1497 /* clear everything but the rate factor */
1498 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1499 IXGBE_RTTBCNRC_RF_DEC_MASK;
1500
1501 /* enable the rate scheduler */
1502 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1503 }
1504
1505 /*
1506 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1507 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1508 * and 0x004 otherwise.
1509 */
1510 switch (hw->mac.type) {
1511 case ixgbe_mac_82599EB:
1512 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1513 break;
1514 case ixgbe_mac_X540:
1515 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1516 break;
1517 default:
1518 break;
1519 }
1520
1521 /* determine how many queues per pool based on VMDq mask */
1522 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1523
1524 /* write value for all Tx queues belonging to VF */
1525 for (queue = 0; queue < queues_per_pool; queue++) {
1526 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1527
1528 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1529 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1530 }
1531 }
1532
1533 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1534 {
1535 int i;
1536
1537 /* VF Tx rate limit was not set */
1538 if (!adapter->vf_rate_link_speed)
1539 return;
1540
1541 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1542 adapter->vf_rate_link_speed = 0;
1543 dev_info(&adapter->pdev->dev,
1544 "Link speed has been changed. VF Transmit rate is disabled\n");
1545 }
1546
1547 for (i = 0; i < adapter->num_vfs; i++) {
1548 if (!adapter->vf_rate_link_speed)
1549 adapter->vfinfo[i].tx_rate = 0;
1550
1551 ixgbe_set_vf_rate_limit(adapter, i);
1552 }
1553 }
1554
1555 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1556 int max_tx_rate)
1557 {
1558 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1559 int link_speed;
1560
1561 /* verify VF is active */
1562 if (vf >= adapter->num_vfs)
1563 return -EINVAL;
1564
1565 /* verify link is up */
1566 if (!adapter->link_up)
1567 return -EINVAL;
1568
1569 /* verify we are linked at 10Gbps */
1570 link_speed = ixgbe_link_mbps(adapter);
1571 if (link_speed != 10000)
1572 return -EINVAL;
1573
1574 if (min_tx_rate)
1575 return -EINVAL;
1576
1577 /* rate limit cannot be less than 10Mbs or greater than link speed */
1578 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1579 return -EINVAL;
1580
1581 /* store values */
1582 adapter->vf_rate_link_speed = link_speed;
1583 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1584
1585 /* update hardware configuration */
1586 ixgbe_set_vf_rate_limit(adapter, vf);
1587
1588 return 0;
1589 }
1590
1591 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1592 {
1593 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1594 struct ixgbe_hw *hw = &adapter->hw;
1595
1596 if (vf >= adapter->num_vfs)
1597 return -EINVAL;
1598
1599 adapter->vfinfo[vf].spoofchk_enabled = setting;
1600
1601 /* configure MAC spoofing */
1602 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1603
1604 /* configure VLAN spoofing */
1605 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1606
1607 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1608 * calling set_ethertype_anti_spoofing for each VF in loop below
1609 */
1610 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1611 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1612 (IXGBE_ETQF_FILTER_EN |
1613 IXGBE_ETQF_TX_ANTISPOOF |
1614 IXGBE_ETH_P_LLDP));
1615
1616 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1617 (IXGBE_ETQF_FILTER_EN |
1618 IXGBE_ETQF_TX_ANTISPOOF |
1619 ETH_P_PAUSE));
1620
1621 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1622 }
1623
1624 return 0;
1625 }
1626
1627 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1628 bool setting)
1629 {
1630 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1631
1632 /* This operation is currently supported only for 82599 and x540
1633 * devices.
1634 */
1635 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1636 adapter->hw.mac.type >= ixgbe_mac_X550)
1637 return -EOPNOTSUPP;
1638
1639 if (vf >= adapter->num_vfs)
1640 return -EINVAL;
1641
1642 adapter->vfinfo[vf].rss_query_enabled = setting;
1643
1644 return 0;
1645 }
1646
1647 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1648 {
1649 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1650
1651 if (vf >= adapter->num_vfs)
1652 return -EINVAL;
1653
1654 /* nothing to do */
1655 if (adapter->vfinfo[vf].trusted == setting)
1656 return 0;
1657
1658 adapter->vfinfo[vf].trusted = setting;
1659
1660 /* reset VF to reconfigure features */
1661 adapter->vfinfo[vf].clear_to_send = false;
1662 ixgbe_ping_vf(adapter, vf);
1663
1664 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1665
1666 return 0;
1667 }
1668
1669 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1670 int vf, struct ifla_vf_info *ivi)
1671 {
1672 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1673 if (vf >= adapter->num_vfs)
1674 return -EINVAL;
1675 ivi->vf = vf;
1676 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1677 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1678 ivi->min_tx_rate = 0;
1679 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1680 ivi->qos = adapter->vfinfo[vf].pf_qos;
1681 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1682 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1683 ivi->trusted = adapter->vfinfo[vf].trusted;
1684 return 0;
1685 }
CRIS linux kernel tree