1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4 #include <linux/types.h>
5 #include <linux/module.h>
6 #include <linux/pci.h>
7 #include <linux/netdevice.h>
8 #include <linux/vmalloc.h>
9 #include <linux/string.h>
10 #include <linux/in.h>
11 #include <linux/ip.h>
12 #include <linux/tcp.h>
13 #include <linux/ipv6.h>
14 #include <linux/if_bridge.h>
15 #ifdef NETIF_F_HW_VLAN_CTAG_TX
16 #include <linux/if_vlan.h>
17 #endif
18
19 #include "ixgbe.h"
20 #include "ixgbe_type.h"
21 #include "ixgbe_mbx.h"
22 #include "ixgbe_sriov.h"
23
24 #ifdef CONFIG_PCI_IOV
ixgbe_alloc_vf_macvlans(struct ixgbe_adapter * adapter,unsigned int num_vfs)25 static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,
26 unsigned int num_vfs)
27 {
28 struct ixgbe_hw *hw = &adapter->hw;
29 struct vf_macvlans *mv_list;
30 int num_vf_macvlans, i;
31
32 /* Initialize list of VF macvlans */
33 INIT_LIST_HEAD(&adapter->vf_mvs.l);
34
35 num_vf_macvlans = hw->mac.num_rar_entries -
36 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
37 if (!num_vf_macvlans)
38 return;
39
40 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
41 GFP_KERNEL);
42 if (mv_list) {
43 for (i = 0; i < num_vf_macvlans; i++) {
44 mv_list[i].vf = -1;
45 mv_list[i].free = true;
46 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
47 }
48 adapter->mv_list = mv_list;
49 }
50 }
51
__ixgbe_enable_sriov(struct ixgbe_adapter * adapter,unsigned int num_vfs)52 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
53 unsigned int num_vfs)
54 {
55 struct ixgbe_hw *hw = &adapter->hw;
56 int i;
57
58 if (adapter->xdp_prog) {
59 e_warn(probe, "SRIOV is not supported with XDP\n");
60 return -EINVAL;
61 }
62
63 /* Enable VMDq flag so device will be set in VM mode */
64 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
65 IXGBE_FLAG_VMDQ_ENABLED;
66
67 /* Allocate memory for per VF control structures */
68 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
69 GFP_KERNEL);
70 if (!adapter->vfinfo)
71 return -ENOMEM;
72
73 adapter->num_vfs = num_vfs;
74
75 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
76 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
77
78 /* Initialize default switching mode VEB */
79 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
80 adapter->bridge_mode = BRIDGE_MODE_VEB;
81
82 /* limit traffic classes based on VFs enabled */
83 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
84 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
85 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
86 } else if (num_vfs < 32) {
87 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
88 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
89 } else {
90 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
91 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
92 }
93
94 /* Disable RSC when in SR-IOV mode */
95 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
96 IXGBE_FLAG2_RSC_ENABLED);
97
98 for (i = 0; i < num_vfs; i++) {
99 /* enable spoof checking for all VFs */
100 adapter->vfinfo[i].spoofchk_enabled = true;
101 adapter->vfinfo[i].link_enable = true;
102
103 /* We support VF RSS querying only for 82599 and x540
104 * devices at the moment. These devices share RSS
105 * indirection table and RSS hash key with PF therefore
106 * we want to disable the querying by default.
107 */
108 adapter->vfinfo[i].rss_query_enabled = false;
109
110 /* Untrust all VFs */
111 adapter->vfinfo[i].trusted = false;
112
113 /* set the default xcast mode */
114 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
115 }
116
117 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
118 return 0;
119 }
120
121 /**
122 * ixgbe_get_vfs - Find and take references to all vf devices
123 * @adapter: Pointer to adapter struct
124 */
ixgbe_get_vfs(struct ixgbe_adapter * adapter)125 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
126 {
127 struct pci_dev *pdev = adapter->pdev;
128 u16 vendor = pdev->vendor;
129 struct pci_dev *vfdev;
130 int vf = 0;
131 u16 vf_id;
132 int pos;
133
134 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
135 if (!pos)
136 return;
137 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
138
139 vfdev = pci_get_device(vendor, vf_id, NULL);
140 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
141 if (!vfdev->is_virtfn)
142 continue;
143 if (vfdev->physfn != pdev)
144 continue;
145 if (vf >= adapter->num_vfs)
146 continue;
147 pci_dev_get(vfdev);
148 adapter->vfinfo[vf].vfdev = vfdev;
149 ++vf;
150 }
151 }
152
153 /* Note this function is called when the user wants to enable SR-IOV
154 * VFs using the now deprecated module parameter
155 */
ixgbe_enable_sriov(struct ixgbe_adapter * adapter,unsigned int max_vfs)156 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
157 {
158 int pre_existing_vfs = 0;
159 unsigned int num_vfs;
160
161 pre_existing_vfs = pci_num_vf(adapter->pdev);
162 if (!pre_existing_vfs && !max_vfs)
163 return;
164
165 /* If there are pre-existing VFs then we have to force
166 * use of that many - over ride any module parameter value.
167 * This may result from the user unloading the PF driver
168 * while VFs were assigned to guest VMs or because the VFs
169 * have been created via the new PCI SR-IOV sysfs interface.
170 */
171 if (pre_existing_vfs) {
172 num_vfs = pre_existing_vfs;
173 dev_warn(&adapter->pdev->dev,
174 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
175 } else {
176 int err;
177 /*
178 * The 82599 supports up to 64 VFs per physical function
179 * but this implementation limits allocation to 63 so that
180 * basic networking resources are still available to the
181 * physical function. If the user requests greater than
182 * 63 VFs then it is an error - reset to default of zero.
183 */
184 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
185
186 err = pci_enable_sriov(adapter->pdev, num_vfs);
187 if (err) {
188 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
189 return;
190 }
191 }
192
193 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
194 ixgbe_get_vfs(adapter);
195 return;
196 }
197
198 /* If we have gotten to this point then there is no memory available
199 * to manage the VF devices - print message and bail.
200 */
201 e_err(probe, "Unable to allocate memory for VF Data Storage - "
202 "SRIOV disabled\n");
203 ixgbe_disable_sriov(adapter);
204 }
205
206 #endif /* #ifdef CONFIG_PCI_IOV */
ixgbe_disable_sriov(struct ixgbe_adapter * adapter)207 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
208 {
209 unsigned int num_vfs = adapter->num_vfs, vf;
210 struct ixgbe_hw *hw = &adapter->hw;
211 unsigned long flags;
212 int rss;
213
214 spin_lock_irqsave(&adapter->vfs_lock, flags);
215 /* set num VFs to 0 to prevent access to vfinfo */
216 adapter->num_vfs = 0;
217 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
218
219 /* put the reference to all of the vf devices */
220 for (vf = 0; vf < num_vfs; ++vf) {
221 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
222
223 if (!vfdev)
224 continue;
225 adapter->vfinfo[vf].vfdev = NULL;
226 pci_dev_put(vfdev);
227 }
228
229 /* free VF control structures */
230 kfree(adapter->vfinfo);
231 adapter->vfinfo = NULL;
232
233 /* free macvlan list */
234 kfree(adapter->mv_list);
235 adapter->mv_list = NULL;
236
237 /* if SR-IOV is already disabled then there is nothing to do */
238 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
239 return 0;
240
241 if (hw->mac.ops.disable_mdd)
242 hw->mac.ops.disable_mdd(hw);
243
244 #ifdef CONFIG_PCI_IOV
245 /*
246 * If our VFs are assigned we cannot shut down SR-IOV
247 * without causing issues, so just leave the hardware
248 * available but disabled
249 */
250 if (pci_vfs_assigned(adapter->pdev)) {
251 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
252 return -EPERM;
253 }
254 /* disable iov and allow time for transactions to clear */
255 pci_disable_sriov(adapter->pdev);
256 #endif
257
258 /* Disable VMDq flag so device will be set in VM mode */
259 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
260 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
261 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
262 rss = min_t(int, ixgbe_max_rss_indices(adapter),
263 num_online_cpus());
264 } else {
265 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
266 }
267
268 adapter->ring_feature[RING_F_VMDQ].offset = 0;
269 adapter->ring_feature[RING_F_RSS].limit = rss;
270
271 /* take a breather then clean up driver data */
272 msleep(100);
273 return 0;
274 }
275
ixgbe_pci_sriov_enable(struct pci_dev * dev,int num_vfs)276 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
277 {
278 #ifdef CONFIG_PCI_IOV
279 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
280 int pre_existing_vfs = pci_num_vf(dev);
281 int err = 0, num_rx_pools, i, limit;
282 u8 num_tc;
283
284 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
285 err = ixgbe_disable_sriov(adapter);
286 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
287 return num_vfs;
288
289 if (err)
290 return err;
291
292 /* While the SR-IOV capability structure reports total VFs to be 64,
293 * we limit the actual number allocated as below based on two factors.
294 * Num_TCs MAX_VFs
295 * 1 63
296 * <=4 31
297 * >4 15
298 * First, we reserve some transmit/receive resources for the PF.
299 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
300 * account for this, so that we don't accidentally allocate more VFs
301 * than we have available pools. The PCI bus driver already checks for
302 * other values out of range.
303 */
304 num_tc = adapter->hw_tcs;
305 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
306 adapter->num_rx_pools);
307 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
308 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
309
310 if (num_vfs > (limit - num_rx_pools)) {
311 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
312 num_tc, num_rx_pools - 1, limit - num_rx_pools);
313 return -EPERM;
314 }
315
316 err = __ixgbe_enable_sriov(adapter, num_vfs);
317 if (err)
318 return err;
319
320 for (i = 0; i < num_vfs; i++)
321 ixgbe_vf_configuration(dev, (i | 0x10000000));
322
323 /* reset before enabling SRIOV to avoid mailbox issues */
324 ixgbe_sriov_reinit(adapter);
325
326 err = pci_enable_sriov(dev, num_vfs);
327 if (err) {
328 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
329 return err;
330 }
331 ixgbe_get_vfs(adapter);
332
333 return num_vfs;
334 #else
335 return 0;
336 #endif
337 }
338
ixgbe_pci_sriov_disable(struct pci_dev * dev)339 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
340 {
341 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
342 int err;
343 #ifdef CONFIG_PCI_IOV
344 u32 current_flags = adapter->flags;
345 int prev_num_vf = pci_num_vf(dev);
346 #endif
347
348 err = ixgbe_disable_sriov(adapter);
349
350 /* Only reinit if no error and state changed */
351 #ifdef CONFIG_PCI_IOV
352 if (!err && (current_flags != adapter->flags ||
353 prev_num_vf != pci_num_vf(dev)))
354 ixgbe_sriov_reinit(adapter);
355 #endif
356
357 return err;
358 }
359
ixgbe_pci_sriov_configure(struct pci_dev * dev,int num_vfs)360 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
361 {
362 if (num_vfs == 0)
363 return ixgbe_pci_sriov_disable(dev);
364 else
365 return ixgbe_pci_sriov_enable(dev, num_vfs);
366 }
367
ixgbe_set_vf_multicasts(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)368 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
369 u32 *msgbuf, u32 vf)
370 {
371 int entries = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
372 u16 *hash_list = (u16 *)&msgbuf[1];
373 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
374 struct ixgbe_hw *hw = &adapter->hw;
375 int i;
376 u32 vector_bit;
377 u32 vector_reg;
378 u32 mta_reg;
379 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
380
381 /* only so many hash values supported */
382 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
383
384 /*
385 * salt away the number of multi cast addresses assigned
386 * to this VF for later use to restore when the PF multi cast
387 * list changes
388 */
389 vfinfo->num_vf_mc_hashes = entries;
390
391 /*
392 * VFs are limited to using the MTA hash table for their multicast
393 * addresses
394 */
395 for (i = 0; i < entries; i++) {
396 vfinfo->vf_mc_hashes[i] = hash_list[i];
397 }
398
399 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
400 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
401 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
402 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
403 mta_reg |= BIT(vector_bit);
404 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
405 }
406 vmolr |= IXGBE_VMOLR_ROMPE;
407 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
408
409 return 0;
410 }
411
412 #ifdef CONFIG_PCI_IOV
ixgbe_restore_vf_multicasts(struct ixgbe_adapter * adapter)413 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
414 {
415 struct ixgbe_hw *hw = &adapter->hw;
416 struct vf_data_storage *vfinfo;
417 int i, j;
418 u32 vector_bit;
419 u32 vector_reg;
420 u32 mta_reg;
421
422 for (i = 0; i < adapter->num_vfs; i++) {
423 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
424 vfinfo = &adapter->vfinfo[i];
425 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
426 hw->addr_ctrl.mta_in_use++;
427 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
428 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
429 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
430 mta_reg |= BIT(vector_bit);
431 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
432 }
433
434 if (vfinfo->num_vf_mc_hashes)
435 vmolr |= IXGBE_VMOLR_ROMPE;
436 else
437 vmolr &= ~IXGBE_VMOLR_ROMPE;
438 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
439 }
440
441 /* Restore any VF macvlans */
442 ixgbe_full_sync_mac_table(adapter);
443 }
444 #endif
445
ixgbe_set_vf_vlan(struct ixgbe_adapter * adapter,int add,int vid,u32 vf)446 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
447 u32 vf)
448 {
449 struct ixgbe_hw *hw = &adapter->hw;
450 int err;
451
452 /* If VLAN overlaps with one the PF is currently monitoring make
453 * sure that we are able to allocate a VLVF entry. This may be
454 * redundant but it guarantees PF will maintain visibility to
455 * the VLAN.
456 */
457 if (add && test_bit(vid, adapter->active_vlans)) {
458 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
459 if (err)
460 return err;
461 }
462
463 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
464
465 if (add && !err)
466 return err;
467
468 /* If we failed to add the VF VLAN or we are removing the VF VLAN
469 * we may need to drop the PF pool bit in order to allow us to free
470 * up the VLVF resources.
471 */
472 if (test_bit(vid, adapter->active_vlans) ||
473 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
474 ixgbe_update_pf_promisc_vlvf(adapter, vid);
475
476 return err;
477 }
478
ixgbe_set_vf_lpe(struct ixgbe_adapter * adapter,u32 max_frame,u32 vf)479 static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)
480 {
481 struct ixgbe_hw *hw = &adapter->hw;
482 u32 max_frs;
483
484 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
485 e_err(drv, "VF max_frame %d out of range\n", max_frame);
486 return -EINVAL;
487 }
488
489 /*
490 * For 82599EB we have to keep all PFs and VFs operating with
491 * the same max_frame value in order to avoid sending an oversize
492 * frame to a VF. In order to guarantee this is handled correctly
493 * for all cases we have several special exceptions to take into
494 * account before we can enable the VF for receive
495 */
496 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
497 struct net_device *dev = adapter->netdev;
498 int pf_max_frame = dev->mtu + ETH_HLEN;
499 u32 reg_offset, vf_shift, vfre;
500 int err = 0;
501
502 #ifdef CONFIG_FCOE
503 if (dev->fcoe_mtu)
504 pf_max_frame = max_t(int, pf_max_frame,
505 IXGBE_FCOE_JUMBO_FRAME_SIZE);
506
507 #endif /* CONFIG_FCOE */
508 switch (adapter->vfinfo[vf].vf_api) {
509 case ixgbe_mbox_api_11:
510 case ixgbe_mbox_api_12:
511 case ixgbe_mbox_api_13:
512 case ixgbe_mbox_api_14:
513 /* Version 1.1 supports jumbo frames on VFs if PF has
514 * jumbo frames enabled which means legacy VFs are
515 * disabled
516 */
517 if (pf_max_frame > ETH_FRAME_LEN)
518 break;
519 fallthrough;
520 default:
521 /* If the PF or VF are running w/ jumbo frames enabled
522 * we need to shut down the VF Rx path as we cannot
523 * support jumbo frames on legacy VFs
524 */
525 if ((pf_max_frame > ETH_FRAME_LEN) ||
526 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
527 err = -EINVAL;
528 break;
529 }
530
531 /* determine VF receive enable location */
532 vf_shift = vf % 32;
533 reg_offset = vf / 32;
534
535 /* enable or disable receive depending on error */
536 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
537 if (err)
538 vfre &= ~BIT(vf_shift);
539 else
540 vfre |= BIT(vf_shift);
541 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
542
543 if (err) {
544 e_err(drv, "VF max_frame %d out of range\n", max_frame);
545 return err;
546 }
547 }
548
549 /* pull current max frame size from hardware */
550 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
551 max_frs &= IXGBE_MHADD_MFS_MASK;
552 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
553
554 if (max_frs < max_frame) {
555 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
556 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
557 }
558
559 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
560
561 return 0;
562 }
563
ixgbe_set_vmolr(struct ixgbe_hw * hw,u32 vf,bool aupe)564 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
565 {
566 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
567 vmolr |= IXGBE_VMOLR_BAM;
568 if (aupe)
569 vmolr |= IXGBE_VMOLR_AUPE;
570 else
571 vmolr &= ~IXGBE_VMOLR_AUPE;
572 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
573 }
574
ixgbe_clear_vmvir(struct ixgbe_adapter * adapter,u32 vf)575 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
576 {
577 struct ixgbe_hw *hw = &adapter->hw;
578
579 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
580 }
581
ixgbe_clear_vf_vlans(struct ixgbe_adapter * adapter,u32 vf)582 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
583 {
584 struct ixgbe_hw *hw = &adapter->hw;
585 u32 vlvfb_mask, pool_mask, i;
586
587 /* create mask for VF and other pools */
588 pool_mask = ~BIT(VMDQ_P(0) % 32);
589 vlvfb_mask = BIT(vf % 32);
590
591 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
592 for (i = IXGBE_VLVF_ENTRIES; i--;) {
593 u32 bits[2], vlvfb, vid, vfta, vlvf;
594 u32 word = i * 2 + vf / 32;
595 u32 mask;
596
597 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
598
599 /* if our bit isn't set we can skip it */
600 if (!(vlvfb & vlvfb_mask))
601 continue;
602
603 /* clear our bit from vlvfb */
604 vlvfb ^= vlvfb_mask;
605
606 /* create 64b mask to chedk to see if we should clear VLVF */
607 bits[word % 2] = vlvfb;
608 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
609
610 /* if other pools are present, just remove ourselves */
611 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
612 (bits[VMDQ_P(0) / 32] & pool_mask))
613 goto update_vlvfb;
614
615 /* if PF is present, leave VFTA */
616 if (bits[0] || bits[1])
617 goto update_vlvf;
618
619 /* if we cannot determine VLAN just remove ourselves */
620 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
621 if (!vlvf)
622 goto update_vlvfb;
623
624 vid = vlvf & VLAN_VID_MASK;
625 mask = BIT(vid % 32);
626
627 /* clear bit from VFTA */
628 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
629 if (vfta & mask)
630 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
631 update_vlvf:
632 /* clear POOL selection enable */
633 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
634
635 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
636 vlvfb = 0;
637 update_vlvfb:
638 /* clear pool bits */
639 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
640 }
641 }
642
ixgbe_set_vf_macvlan(struct ixgbe_adapter * adapter,int vf,int index,unsigned char * mac_addr)643 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
644 int vf, int index, unsigned char *mac_addr)
645 {
646 struct vf_macvlans *entry;
647 bool found = false;
648 int retval = 0;
649
650 if (index <= 1) {
651 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
652 if (entry->vf == vf) {
653 entry->vf = -1;
654 entry->free = true;
655 entry->is_macvlan = false;
656 ixgbe_del_mac_filter(adapter,
657 entry->vf_macvlan, vf);
658 }
659 }
660 }
661
662 /*
663 * If index was zero then we were asked to clear the uc list
664 * for the VF. We're done.
665 */
666 if (!index)
667 return 0;
668
669 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
670 if (entry->free) {
671 found = true;
672 break;
673 }
674 }
675
676 /*
677 * If we traversed the entire list and didn't find a free entry
678 * then we're out of space on the RAR table. It's also possible
679 * for the &adapter->vf_mvs.l list to be empty because the original
680 * memory allocation for the list failed, which is not fatal but does
681 * mean we can't support VF requests for MACVLAN because we couldn't
682 * allocate memory for the list management required.
683 */
684 if (!found)
685 return -ENOSPC;
686
687 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
688 if (retval < 0)
689 return retval;
690
691 entry->free = false;
692 entry->is_macvlan = true;
693 entry->vf = vf;
694 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
695
696 return 0;
697 }
698
ixgbe_vf_reset_event(struct ixgbe_adapter * adapter,u32 vf)699 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
700 {
701 struct ixgbe_hw *hw = &adapter->hw;
702 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
703 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
704 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
705 u8 num_tcs = adapter->hw_tcs;
706 u32 reg_val;
707 u32 queue;
708
709 /* remove VLAN filters belonging to this VF */
710 ixgbe_clear_vf_vlans(adapter, vf);
711
712 /* add back PF assigned VLAN or VLAN 0 */
713 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
714
715 /* reset offloads to defaults */
716 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
717
718 /* set outgoing tags for VFs */
719 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
720 ixgbe_clear_vmvir(adapter, vf);
721 } else {
722 if (vfinfo->pf_qos || !num_tcs)
723 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
724 vfinfo->pf_qos, vf);
725 else
726 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
727 adapter->default_up, vf);
728
729 if (vfinfo->spoofchk_enabled) {
730 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
731 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
732 }
733 }
734
735 /* reset multicast table array for vf */
736 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
737
738 /* clear any ipsec table info */
739 ixgbe_ipsec_vf_clear(adapter, vf);
740
741 /* Flush and reset the mta with the new values */
742 ixgbe_set_rx_mode(adapter->netdev);
743
744 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
745 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
746
747 /* reset VF api back to unknown */
748 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
749
750 /* Restart each queue for given VF */
751 for (queue = 0; queue < q_per_pool; queue++) {
752 unsigned int reg_idx = (vf * q_per_pool) + queue;
753
754 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
755
756 /* Re-enabling only configured queues */
757 if (reg_val) {
758 reg_val |= IXGBE_TXDCTL_ENABLE;
759 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
760 reg_val &= ~IXGBE_TXDCTL_ENABLE;
761 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
762 }
763 }
764
765 IXGBE_WRITE_FLUSH(hw);
766 }
767
ixgbe_vf_clear_mbx(struct ixgbe_adapter * adapter,u32 vf)768 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
769 {
770 struct ixgbe_hw *hw = &adapter->hw;
771 u32 word;
772
773 /* Clear VF's mailbox memory */
774 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
775 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
776
777 IXGBE_WRITE_FLUSH(hw);
778 }
779
ixgbe_set_vf_mac(struct ixgbe_adapter * adapter,int vf,unsigned char * mac_addr)780 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
781 int vf, unsigned char *mac_addr)
782 {
783 int retval;
784
785 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
786 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
787 if (retval >= 0)
788 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
789 ETH_ALEN);
790 else
791 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);
792
793 return retval;
794 }
795
ixgbe_vf_configuration(struct pci_dev * pdev,unsigned int event_mask)796 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
797 {
798 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
799 unsigned int vfn = (event_mask & 0x3f);
800
801 bool enable = ((event_mask & 0x10000000U) != 0);
802
803 if (enable)
804 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
805
806 return 0;
807 }
808
ixgbe_write_qde(struct ixgbe_adapter * adapter,u32 vf,u32 qde)809 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
810 u32 qde)
811 {
812 struct ixgbe_hw *hw = &adapter->hw;
813 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
814 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
815 int i;
816
817 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
818 u32 reg;
819
820 /* flush previous write */
821 IXGBE_WRITE_FLUSH(hw);
822
823 /* indicate to hardware that we want to set drop enable */
824 reg = IXGBE_QDE_WRITE | qde;
825 reg |= i << IXGBE_QDE_IDX_SHIFT;
826 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
827 }
828 }
829
830 /**
831 * ixgbe_set_vf_rx_tx - Set VF rx tx
832 * @adapter: Pointer to adapter struct
833 * @vf: VF identifier
834 *
835 * Set or reset correct transmit and receive for vf
836 **/
ixgbe_set_vf_rx_tx(struct ixgbe_adapter * adapter,int vf)837 static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)
838 {
839 u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;
840 struct ixgbe_hw *hw = &adapter->hw;
841 u32 reg_offset, vf_shift;
842
843 vf_shift = vf % 32;
844 reg_offset = vf / 32;
845
846 reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
847 reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
848
849 if (adapter->vfinfo[vf].link_enable) {
850 reg_req_tx = reg_cur_tx | 1 << vf_shift;
851 reg_req_rx = reg_cur_rx | 1 << vf_shift;
852 } else {
853 reg_req_tx = reg_cur_tx & ~(1 << vf_shift);
854 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
855 }
856
857 /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
858 * For more info take a look at ixgbe_set_vf_lpe
859 */
860 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
861 struct net_device *dev = adapter->netdev;
862 int pf_max_frame = dev->mtu + ETH_HLEN;
863
864 #if IS_ENABLED(CONFIG_FCOE)
865 if (dev->fcoe_mtu)
866 pf_max_frame = max_t(int, pf_max_frame,
867 IXGBE_FCOE_JUMBO_FRAME_SIZE);
868 #endif /* CONFIG_FCOE */
869
870 if (pf_max_frame > ETH_FRAME_LEN)
871 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
872 }
873
874 /* Enable/Disable particular VF */
875 if (reg_cur_tx != reg_req_tx)
876 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx);
877 if (reg_cur_rx != reg_req_rx)
878 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx);
879 }
880
ixgbe_vf_reset_msg(struct ixgbe_adapter * adapter,u32 vf)881 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
882 {
883 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
884 struct ixgbe_hw *hw = &adapter->hw;
885 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
886 u32 reg, reg_offset, vf_shift;
887 u32 msgbuf[4] = {0, 0, 0, 0};
888 u8 *addr = (u8 *)(&msgbuf[1]);
889 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
890 int i;
891
892 e_info(probe, "VF Reset msg received from vf %d\n", vf);
893
894 /* reset the filters for the device */
895 ixgbe_vf_reset_event(adapter, vf);
896
897 ixgbe_vf_clear_mbx(adapter, vf);
898
899 /* set vf mac address */
900 if (!is_zero_ether_addr(vf_mac))
901 ixgbe_set_vf_mac(adapter, vf, vf_mac);
902
903 vf_shift = vf % 32;
904 reg_offset = vf / 32;
905
906 /* force drop enable for all VF Rx queues */
907 reg = IXGBE_QDE_ENABLE;
908 if (adapter->vfinfo[vf].pf_vlan)
909 reg |= IXGBE_QDE_HIDE_VLAN;
910
911 ixgbe_write_qde(adapter, vf, reg);
912
913 ixgbe_set_vf_rx_tx(adapter, vf);
914
915 /* enable VF mailbox for further messages */
916 adapter->vfinfo[vf].clear_to_send = true;
917
918 /* Enable counting of spoofed packets in the SSVPC register */
919 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
920 reg |= BIT(vf_shift);
921 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
922
923 /*
924 * Reset the VFs TDWBAL and TDWBAH registers
925 * which are not cleared by an FLR
926 */
927 for (i = 0; i < q_per_pool; i++) {
928 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
929 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
930 }
931
932 /* reply to reset with ack and vf mac address */
933 msgbuf[0] = IXGBE_VF_RESET;
934 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
935 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
936 memcpy(addr, vf_mac, ETH_ALEN);
937 } else {
938 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
939 }
940
941 /*
942 * Piggyback the multicast filter type so VF can compute the
943 * correct vectors
944 */
945 msgbuf[3] = hw->mac.mc_filter_type;
946 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
947
948 return 0;
949 }
950
ixgbe_set_vf_mac_addr(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)951 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
952 u32 *msgbuf, u32 vf)
953 {
954 u8 *new_mac = ((u8 *)(&msgbuf[1]));
955
956 if (!is_valid_ether_addr(new_mac)) {
957 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
958 return -1;
959 }
960
961 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
962 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
963 e_warn(drv,
964 "VF %d attempted to override administratively set MAC address\n"
965 "Reload the VF driver to resume operations\n",
966 vf);
967 return -1;
968 }
969
970 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
971 }
972
ixgbe_set_vf_vlan_msg(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)973 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
974 u32 *msgbuf, u32 vf)
975 {
976 u32 add = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
977 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
978 u8 tcs = adapter->hw_tcs;
979
980 if (adapter->vfinfo[vf].pf_vlan || tcs) {
981 e_warn(drv,
982 "VF %d attempted to override administratively set VLAN configuration\n"
983 "Reload the VF driver to resume operations\n",
984 vf);
985 return -1;
986 }
987
988 /* VLAN 0 is a special case, don't allow it to be removed */
989 if (!vid && !add)
990 return 0;
991
992 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
993 }
994
ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)995 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
996 u32 *msgbuf, u32 vf)
997 {
998 u8 *new_mac = ((u8 *)(&msgbuf[1]));
999 int index = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
1000 int err;
1001
1002 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
1003 index > 0) {
1004 e_warn(drv,
1005 "VF %d requested MACVLAN filter but is administratively denied\n",
1006 vf);
1007 return -1;
1008 }
1009
1010 /* An non-zero index indicates the VF is setting a filter */
1011 if (index) {
1012 if (!is_valid_ether_addr(new_mac)) {
1013 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
1014 return -1;
1015 }
1016
1017 /*
1018 * If the VF is allowed to set MAC filters then turn off
1019 * anti-spoofing to avoid false positives.
1020 */
1021 if (adapter->vfinfo[vf].spoofchk_enabled) {
1022 struct ixgbe_hw *hw = &adapter->hw;
1023
1024 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
1025 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1026 }
1027 }
1028
1029 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
1030 if (err == -ENOSPC)
1031 e_warn(drv,
1032 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1033 vf);
1034
1035 return err < 0;
1036 }
1037
ixgbe_negotiate_vf_api(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1038 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1039 u32 *msgbuf, u32 vf)
1040 {
1041 int api = msgbuf[1];
1042
1043 switch (api) {
1044 case ixgbe_mbox_api_10:
1045 case ixgbe_mbox_api_11:
1046 case ixgbe_mbox_api_12:
1047 case ixgbe_mbox_api_13:
1048 case ixgbe_mbox_api_14:
1049 adapter->vfinfo[vf].vf_api = api;
1050 return 0;
1051 default:
1052 break;
1053 }
1054
1055 e_dbg(drv, "VF %d requested unsupported api version %u\n", vf, api);
1056
1057 return -1;
1058 }
1059
ixgbe_get_vf_queues(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1060 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1061 u32 *msgbuf, u32 vf)
1062 {
1063 struct net_device *dev = adapter->netdev;
1064 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1065 unsigned int default_tc = 0;
1066 u8 num_tcs = adapter->hw_tcs;
1067
1068 /* verify the PF is supporting the correct APIs */
1069 switch (adapter->vfinfo[vf].vf_api) {
1070 case ixgbe_mbox_api_20:
1071 case ixgbe_mbox_api_11:
1072 case ixgbe_mbox_api_12:
1073 case ixgbe_mbox_api_13:
1074 case ixgbe_mbox_api_14:
1075 break;
1076 default:
1077 return -1;
1078 }
1079
1080 /* only allow 1 Tx queue for bandwidth limiting */
1081 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1082 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1083
1084 /* if TCs > 1 determine which TC belongs to default user priority */
1085 if (num_tcs > 1)
1086 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1087
1088 /* notify VF of need for VLAN tag stripping, and correct queue */
1089 if (num_tcs)
1090 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1091 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1092 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1093 else
1094 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1095
1096 /* notify VF of default queue */
1097 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1098
1099 return 0;
1100 }
1101
ixgbe_get_vf_reta(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1102 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1103 {
1104 u32 i, j;
1105 u32 *out_buf = &msgbuf[1];
1106 const u8 *reta = adapter->rss_indir_tbl;
1107 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1108
1109 /* Check if operation is permitted */
1110 if (!adapter->vfinfo[vf].rss_query_enabled)
1111 return -EPERM;
1112
1113 /* verify the PF is supporting the correct API */
1114 switch (adapter->vfinfo[vf].vf_api) {
1115 case ixgbe_mbox_api_14:
1116 case ixgbe_mbox_api_13:
1117 case ixgbe_mbox_api_12:
1118 break;
1119 default:
1120 return -EOPNOTSUPP;
1121 }
1122
1123 /* This mailbox command is supported (required) only for 82599 and x540
1124 * VFs which support up to 4 RSS queues. Therefore we will compress the
1125 * RETA by saving only 2 bits from each entry. This way we will be able
1126 * to transfer the whole RETA in a single mailbox operation.
1127 */
1128 for (i = 0; i < reta_size / 16; i++) {
1129 out_buf[i] = 0;
1130 for (j = 0; j < 16; j++)
1131 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1132 }
1133
1134 return 0;
1135 }
1136
ixgbe_get_vf_rss_key(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1137 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1138 u32 *msgbuf, u32 vf)
1139 {
1140 u32 *rss_key = &msgbuf[1];
1141
1142 /* Check if the operation is permitted */
1143 if (!adapter->vfinfo[vf].rss_query_enabled)
1144 return -EPERM;
1145
1146 /* verify the PF is supporting the correct API */
1147 switch (adapter->vfinfo[vf].vf_api) {
1148 case ixgbe_mbox_api_14:
1149 case ixgbe_mbox_api_13:
1150 case ixgbe_mbox_api_12:
1151 break;
1152 default:
1153 return -EOPNOTSUPP;
1154 }
1155
1156 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1157
1158 return 0;
1159 }
1160
ixgbe_update_vf_xcast_mode(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1161 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1162 u32 *msgbuf, u32 vf)
1163 {
1164 struct ixgbe_hw *hw = &adapter->hw;
1165 int xcast_mode = msgbuf[1];
1166 u32 vmolr, fctrl, disable, enable;
1167
1168 /* verify the PF is supporting the correct APIs */
1169 switch (adapter->vfinfo[vf].vf_api) {
1170 case ixgbe_mbox_api_12:
1171 /* promisc introduced in 1.3 version */
1172 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1173 return -EOPNOTSUPP;
1174 fallthrough;
1175 case ixgbe_mbox_api_13:
1176 case ixgbe_mbox_api_14:
1177 break;
1178 default:
1179 return -EOPNOTSUPP;
1180 }
1181
1182 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1183 !adapter->vfinfo[vf].trusted) {
1184 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1185 }
1186
1187 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1188 goto out;
1189
1190 switch (xcast_mode) {
1191 case IXGBEVF_XCAST_MODE_NONE:
1192 disable = IXGBE_VMOLR_ROMPE |
1193 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1194 enable = IXGBE_VMOLR_BAM;
1195 break;
1196 case IXGBEVF_XCAST_MODE_MULTI:
1197 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1198 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1199 break;
1200 case IXGBEVF_XCAST_MODE_ALLMULTI:
1201 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1202 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1203 break;
1204 case IXGBEVF_XCAST_MODE_PROMISC:
1205 if (hw->mac.type <= ixgbe_mac_82599EB)
1206 return -EOPNOTSUPP;
1207
1208 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1209 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1210 /* VF promisc requires PF in promisc */
1211 e_warn(drv,
1212 "Enabling VF promisc requires PF in promisc\n");
1213 return -EPERM;
1214 }
1215
1216 disable = IXGBE_VMOLR_VPE;
1217 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1218 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;
1219 break;
1220 default:
1221 return -EOPNOTSUPP;
1222 }
1223
1224 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1225 vmolr &= ~disable;
1226 vmolr |= enable;
1227 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1228
1229 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1230
1231 out:
1232 msgbuf[1] = xcast_mode;
1233
1234 return 0;
1235 }
1236
ixgbe_get_vf_link_state(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1237 static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
1238 u32 *msgbuf, u32 vf)
1239 {
1240 u32 *link_state = &msgbuf[1];
1241
1242 /* verify the PF is supporting the correct API */
1243 switch (adapter->vfinfo[vf].vf_api) {
1244 case ixgbe_mbox_api_12:
1245 case ixgbe_mbox_api_13:
1246 case ixgbe_mbox_api_14:
1247 break;
1248 default:
1249 return -EOPNOTSUPP;
1250 }
1251
1252 *link_state = adapter->vfinfo[vf].link_enable;
1253
1254 return 0;
1255 }
1256
ixgbe_rcv_msg_from_vf(struct ixgbe_adapter * adapter,u32 vf)1257 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1258 {
1259 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1260 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1261 struct ixgbe_hw *hw = &adapter->hw;
1262 int retval;
1263
1264 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1265
1266 if (retval) {
1267 pr_err("Error receiving message from VF\n");
1268 return retval;
1269 }
1270
1271 /* this is a message we already processed, do nothing */
1272 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1273 return 0;
1274
1275 /* flush the ack before we write any messages back */
1276 IXGBE_WRITE_FLUSH(hw);
1277
1278 if (msgbuf[0] == IXGBE_VF_RESET)
1279 return ixgbe_vf_reset_msg(adapter, vf);
1280
1281 /*
1282 * until the vf completes a virtual function reset it should not be
1283 * allowed to start any configuration.
1284 */
1285 if (!adapter->vfinfo[vf].clear_to_send) {
1286 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1287 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1288 return 0;
1289 }
1290
1291 switch ((msgbuf[0] & 0xFFFF)) {
1292 case IXGBE_VF_SET_MAC_ADDR:
1293 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1294 break;
1295 case IXGBE_VF_SET_MULTICAST:
1296 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1297 break;
1298 case IXGBE_VF_SET_VLAN:
1299 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1300 break;
1301 case IXGBE_VF_SET_LPE:
1302 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1303 break;
1304 case IXGBE_VF_SET_MACVLAN:
1305 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1306 break;
1307 case IXGBE_VF_API_NEGOTIATE:
1308 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1309 break;
1310 case IXGBE_VF_GET_QUEUES:
1311 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1312 break;
1313 case IXGBE_VF_GET_RETA:
1314 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1315 break;
1316 case IXGBE_VF_GET_RSS_KEY:
1317 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1318 break;
1319 case IXGBE_VF_UPDATE_XCAST_MODE:
1320 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1321 break;
1322 case IXGBE_VF_GET_LINK_STATE:
1323 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);
1324 break;
1325 case IXGBE_VF_IPSEC_ADD:
1326 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1327 break;
1328 case IXGBE_VF_IPSEC_DEL:
1329 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1330 break;
1331 default:
1332 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1333 retval = -EIO;
1334 break;
1335 }
1336
1337 /* notify the VF of the results of what it sent us */
1338 if (retval)
1339 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1340 else
1341 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1342
1343 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1344
1345 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1346
1347 return retval;
1348 }
1349
ixgbe_rcv_ack_from_vf(struct ixgbe_adapter * adapter,u32 vf)1350 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1351 {
1352 struct ixgbe_hw *hw = &adapter->hw;
1353 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1354
1355 /* if device isn't clear to send it shouldn't be reading either */
1356 if (!adapter->vfinfo[vf].clear_to_send)
1357 ixgbe_write_mbx(hw, &msg, 1, vf);
1358 }
1359
1360 /**
1361 * ixgbe_check_mdd_event - check for MDD event on all VFs
1362 * @adapter: pointer to ixgbe adapter
1363 *
1364 * Return: true if there is a VF on which MDD event occurred, false otherwise.
1365 */
ixgbe_check_mdd_event(struct ixgbe_adapter * adapter)1366 bool ixgbe_check_mdd_event(struct ixgbe_adapter *adapter)
1367 {
1368 struct ixgbe_hw *hw = &adapter->hw;
1369 DECLARE_BITMAP(vf_bitmap, 64);
1370 bool ret = false;
1371 int i;
1372
1373 if (!hw->mac.ops.handle_mdd)
1374 return false;
1375
1376 /* Did we have a malicious event */
1377 bitmap_zero(vf_bitmap, 64);
1378 hw->mac.ops.handle_mdd(hw, vf_bitmap);
1379
1380 /* Log any blocked queues and release lock */
1381 for_each_set_bit(i, vf_bitmap, 64) {
1382 dev_warn(&adapter->pdev->dev,
1383 "Malicious event on VF %d tx:%x rx:%x\n", i,
1384 IXGBE_READ_REG(hw, IXGBE_LVMMC_TX),
1385 IXGBE_READ_REG(hw, IXGBE_LVMMC_RX));
1386
1387 if (hw->mac.ops.restore_mdd_vf) {
1388 u32 ping;
1389
1390 hw->mac.ops.restore_mdd_vf(hw, i);
1391
1392 /* get the VF to rebuild its queues */
1393 adapter->vfinfo[i].clear_to_send = 0;
1394 ping = IXGBE_PF_CONTROL_MSG |
1395 IXGBE_VT_MSGTYPE_CTS;
1396 ixgbe_write_mbx(hw, &ping, 1, i);
1397 }
1398
1399 ret = true;
1400 }
1401
1402 return ret;
1403 }
1404
ixgbe_msg_task(struct ixgbe_adapter * adapter)1405 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1406 {
1407 struct ixgbe_hw *hw = &adapter->hw;
1408 unsigned long flags;
1409 u32 vf;
1410
1411 ixgbe_check_mdd_event(adapter);
1412
1413 spin_lock_irqsave(&adapter->vfs_lock, flags);
1414 for (vf = 0; vf < adapter->num_vfs; vf++) {
1415 /* process any reset requests */
1416 if (!ixgbe_check_for_rst(hw, vf))
1417 ixgbe_vf_reset_event(adapter, vf);
1418
1419 /* process any messages pending */
1420 if (!ixgbe_check_for_msg(hw, vf))
1421 ixgbe_rcv_msg_from_vf(adapter, vf);
1422
1423 /* process any acks */
1424 if (!ixgbe_check_for_ack(hw, vf))
1425 ixgbe_rcv_ack_from_vf(adapter, vf);
1426 }
1427 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
1428 }
1429
ixgbe_ping_vf(struct ixgbe_adapter * adapter,int vf)1430 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1431 {
1432 struct ixgbe_hw *hw = &adapter->hw;
1433 u32 ping;
1434
1435 ping = IXGBE_PF_CONTROL_MSG;
1436 if (adapter->vfinfo[vf].clear_to_send)
1437 ping |= IXGBE_VT_MSGTYPE_CTS;
1438 ixgbe_write_mbx(hw, &ping, 1, vf);
1439 }
1440
ixgbe_ping_all_vfs(struct ixgbe_adapter * adapter)1441 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1442 {
1443 struct ixgbe_hw *hw = &adapter->hw;
1444 u32 ping;
1445 int i;
1446
1447 for (i = 0 ; i < adapter->num_vfs; i++) {
1448 ping = IXGBE_PF_CONTROL_MSG;
1449 if (adapter->vfinfo[i].clear_to_send)
1450 ping |= IXGBE_VT_MSGTYPE_CTS;
1451 ixgbe_write_mbx(hw, &ping, 1, i);
1452 }
1453 }
1454
1455 /**
1456 * ixgbe_set_all_vfs - update vfs queues
1457 * @adapter: Pointer to adapter struct
1458 *
1459 * Update setting transmit and receive queues for all vfs
1460 **/
ixgbe_set_all_vfs(struct ixgbe_adapter * adapter)1461 void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)
1462 {
1463 int i;
1464
1465 for (i = 0 ; i < adapter->num_vfs; i++)
1466 ixgbe_set_vf_link_state(adapter, i,
1467 adapter->vfinfo[i].link_state);
1468 }
1469
ixgbe_ndo_set_vf_mac(struct net_device * netdev,int vf,u8 * mac)1470 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1471 {
1472 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1473 int retval;
1474
1475 if (vf >= adapter->num_vfs)
1476 return -EINVAL;
1477
1478 if (is_valid_ether_addr(mac)) {
1479 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1480 mac, vf);
1481 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1482
1483 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1484 if (retval >= 0) {
1485 adapter->vfinfo[vf].pf_set_mac = true;
1486
1487 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1488 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1489 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1490 }
1491 } else {
1492 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1493 }
1494 } else if (is_zero_ether_addr(mac)) {
1495 unsigned char *vf_mac_addr =
1496 adapter->vfinfo[vf].vf_mac_addresses;
1497
1498 /* nothing to do */
1499 if (is_zero_ether_addr(vf_mac_addr))
1500 return 0;
1501
1502 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1503
1504 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1505 if (retval >= 0) {
1506 adapter->vfinfo[vf].pf_set_mac = false;
1507 memcpy(vf_mac_addr, mac, ETH_ALEN);
1508 } else {
1509 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1510 }
1511 } else {
1512 retval = -EINVAL;
1513 }
1514
1515 return retval;
1516 }
1517
ixgbe_enable_port_vlan(struct ixgbe_adapter * adapter,int vf,u16 vlan,u8 qos)1518 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1519 u16 vlan, u8 qos)
1520 {
1521 struct ixgbe_hw *hw = &adapter->hw;
1522 int err;
1523
1524 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1525 if (err)
1526 goto out;
1527
1528 /* Revoke tagless access via VLAN 0 */
1529 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1530
1531 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1532 ixgbe_set_vmolr(hw, vf, false);
1533
1534 /* enable hide vlan on X550 */
1535 if (hw->mac.type >= ixgbe_mac_X550)
1536 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1537 IXGBE_QDE_HIDE_VLAN);
1538
1539 adapter->vfinfo[vf].pf_vlan = vlan;
1540 adapter->vfinfo[vf].pf_qos = qos;
1541 dev_info(&adapter->pdev->dev,
1542 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1543 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1544 dev_warn(&adapter->pdev->dev,
1545 "The VF VLAN has been set, but the PF device is not up.\n");
1546 dev_warn(&adapter->pdev->dev,
1547 "Bring the PF device up before attempting to use the VF device.\n");
1548 }
1549
1550 out:
1551 return err;
1552 }
1553
ixgbe_disable_port_vlan(struct ixgbe_adapter * adapter,int vf)1554 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1555 {
1556 struct ixgbe_hw *hw = &adapter->hw;
1557 int err;
1558
1559 err = ixgbe_set_vf_vlan(adapter, false,
1560 adapter->vfinfo[vf].pf_vlan, vf);
1561 /* Restore tagless access via VLAN 0 */
1562 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1563 ixgbe_clear_vmvir(adapter, vf);
1564 ixgbe_set_vmolr(hw, vf, true);
1565
1566 /* disable hide VLAN on X550 */
1567 if (hw->mac.type >= ixgbe_mac_X550)
1568 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1569
1570 adapter->vfinfo[vf].pf_vlan = 0;
1571 adapter->vfinfo[vf].pf_qos = 0;
1572
1573 return err;
1574 }
1575
ixgbe_ndo_set_vf_vlan(struct net_device * netdev,int vf,u16 vlan,u8 qos,__be16 vlan_proto)1576 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1577 u8 qos, __be16 vlan_proto)
1578 {
1579 int err = 0;
1580 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1581
1582 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1583 return -EINVAL;
1584 if (vlan_proto != htons(ETH_P_8021Q))
1585 return -EPROTONOSUPPORT;
1586 if (vlan || qos) {
1587 /* Check if there is already a port VLAN set, if so
1588 * we have to delete the old one first before we
1589 * can set the new one. The usage model had
1590 * previously assumed the user would delete the
1591 * old port VLAN before setting a new one but this
1592 * is not necessarily the case.
1593 */
1594 if (adapter->vfinfo[vf].pf_vlan)
1595 err = ixgbe_disable_port_vlan(adapter, vf);
1596 if (err)
1597 goto out;
1598 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1599 } else {
1600 err = ixgbe_disable_port_vlan(adapter, vf);
1601 }
1602
1603 out:
1604 return err;
1605 }
1606
ixgbe_link_mbps(struct ixgbe_adapter * adapter)1607 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1608 {
1609 switch (adapter->link_speed) {
1610 case IXGBE_LINK_SPEED_100_FULL:
1611 return 100;
1612 case IXGBE_LINK_SPEED_1GB_FULL:
1613 return 1000;
1614 case IXGBE_LINK_SPEED_10GB_FULL:
1615 return 10000;
1616 default:
1617 return 0;
1618 }
1619 }
1620
ixgbe_set_vf_rate_limit(struct ixgbe_adapter * adapter,int vf)1621 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1622 {
1623 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1624 struct ixgbe_hw *hw = &adapter->hw;
1625 u32 bcnrc_val = 0;
1626 u16 queue, queues_per_pool;
1627 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1628
1629 if (tx_rate) {
1630 /* start with base link speed value */
1631 bcnrc_val = adapter->vf_rate_link_speed;
1632
1633 /* Calculate the rate factor values to set */
1634 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1635 bcnrc_val /= tx_rate;
1636
1637 /* clear everything but the rate factor */
1638 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1639 IXGBE_RTTBCNRC_RF_DEC_MASK;
1640
1641 /* enable the rate scheduler */
1642 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1643 }
1644
1645 /*
1646 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1647 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1648 * and 0x004 otherwise.
1649 */
1650 switch (hw->mac.type) {
1651 case ixgbe_mac_82599EB:
1652 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1653 break;
1654 case ixgbe_mac_X540:
1655 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1656 break;
1657 default:
1658 break;
1659 }
1660
1661 /* determine how many queues per pool based on VMDq mask */
1662 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1663
1664 /* write value for all Tx queues belonging to VF */
1665 for (queue = 0; queue < queues_per_pool; queue++) {
1666 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1667
1668 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1669 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1670 }
1671 }
1672
ixgbe_check_vf_rate_limit(struct ixgbe_adapter * adapter)1673 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1674 {
1675 int i;
1676
1677 /* VF Tx rate limit was not set */
1678 if (!adapter->vf_rate_link_speed)
1679 return;
1680
1681 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1682 adapter->vf_rate_link_speed = 0;
1683 dev_info(&adapter->pdev->dev,
1684 "Link speed has been changed. VF Transmit rate is disabled\n");
1685 }
1686
1687 for (i = 0; i < adapter->num_vfs; i++) {
1688 if (!adapter->vf_rate_link_speed)
1689 adapter->vfinfo[i].tx_rate = 0;
1690
1691 ixgbe_set_vf_rate_limit(adapter, i);
1692 }
1693 }
1694
ixgbe_ndo_set_vf_bw(struct net_device * netdev,int vf,int min_tx_rate,int max_tx_rate)1695 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1696 int max_tx_rate)
1697 {
1698 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1699 int link_speed;
1700
1701 /* verify VF is active */
1702 if (vf >= adapter->num_vfs)
1703 return -EINVAL;
1704
1705 /* verify link is up */
1706 if (!adapter->link_up)
1707 return -EINVAL;
1708
1709 /* verify we are linked at 10Gbps */
1710 link_speed = ixgbe_link_mbps(adapter);
1711 if (link_speed != 10000)
1712 return -EINVAL;
1713
1714 if (min_tx_rate)
1715 return -EINVAL;
1716
1717 /* rate limit cannot be less than 10Mbs or greater than link speed */
1718 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1719 return -EINVAL;
1720
1721 /* store values */
1722 adapter->vf_rate_link_speed = link_speed;
1723 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1724
1725 /* update hardware configuration */
1726 ixgbe_set_vf_rate_limit(adapter, vf);
1727
1728 return 0;
1729 }
1730
ixgbe_ndo_set_vf_spoofchk(struct net_device * netdev,int vf,bool setting)1731 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1732 {
1733 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1734 struct ixgbe_hw *hw = &adapter->hw;
1735
1736 if (vf >= adapter->num_vfs)
1737 return -EINVAL;
1738
1739 adapter->vfinfo[vf].spoofchk_enabled = setting;
1740
1741 /* configure MAC spoofing */
1742 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1743
1744 /* configure VLAN spoofing */
1745 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1746
1747 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1748 * calling set_ethertype_anti_spoofing for each VF in loop below
1749 */
1750 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1751 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1752 (IXGBE_ETQF_FILTER_EN |
1753 IXGBE_ETQF_TX_ANTISPOOF |
1754 ETH_P_LLDP));
1755
1756 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1757 (IXGBE_ETQF_FILTER_EN |
1758 IXGBE_ETQF_TX_ANTISPOOF |
1759 ETH_P_PAUSE));
1760
1761 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1762 }
1763
1764 return 0;
1765 }
1766
1767 /**
1768 * ixgbe_set_vf_link_state - Set link state
1769 * @adapter: Pointer to adapter struct
1770 * @vf: VF identifier
1771 * @state: required link state
1772 *
1773 * Set a link force state on/off a single vf
1774 **/
ixgbe_set_vf_link_state(struct ixgbe_adapter * adapter,int vf,int state)1775 void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)
1776 {
1777 adapter->vfinfo[vf].link_state = state;
1778
1779 switch (state) {
1780 case IFLA_VF_LINK_STATE_AUTO:
1781 if (test_bit(__IXGBE_DOWN, &adapter->state))
1782 adapter->vfinfo[vf].link_enable = false;
1783 else
1784 adapter->vfinfo[vf].link_enable = true;
1785 break;
1786 case IFLA_VF_LINK_STATE_ENABLE:
1787 adapter->vfinfo[vf].link_enable = true;
1788 break;
1789 case IFLA_VF_LINK_STATE_DISABLE:
1790 adapter->vfinfo[vf].link_enable = false;
1791 break;
1792 }
1793
1794 ixgbe_set_vf_rx_tx(adapter, vf);
1795
1796 /* restart the VF */
1797 adapter->vfinfo[vf].clear_to_send = false;
1798 ixgbe_ping_vf(adapter, vf);
1799 }
1800
1801 /**
1802 * ixgbe_ndo_set_vf_link_state - Set link state
1803 * @netdev: network interface device structure
1804 * @vf: VF identifier
1805 * @state: required link state
1806 *
1807 * Set the link state of a specified VF, regardless of physical link state
1808 **/
ixgbe_ndo_set_vf_link_state(struct net_device * netdev,int vf,int state)1809 int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)
1810 {
1811 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1812 int ret = 0;
1813
1814 if (vf < 0 || vf >= adapter->num_vfs) {
1815 dev_err(&adapter->pdev->dev,
1816 "NDO set VF link - invalid VF identifier %d\n", vf);
1817 return -EINVAL;
1818 }
1819
1820 switch (state) {
1821 case IFLA_VF_LINK_STATE_ENABLE:
1822 dev_info(&adapter->pdev->dev,
1823 "NDO set VF %d link state %d - not supported\n",
1824 vf, state);
1825 break;
1826 case IFLA_VF_LINK_STATE_DISABLE:
1827 dev_info(&adapter->pdev->dev,
1828 "NDO set VF %d link state disable\n", vf);
1829 ixgbe_set_vf_link_state(adapter, vf, state);
1830 break;
1831 case IFLA_VF_LINK_STATE_AUTO:
1832 dev_info(&adapter->pdev->dev,
1833 "NDO set VF %d link state auto\n", vf);
1834 ixgbe_set_vf_link_state(adapter, vf, state);
1835 break;
1836 default:
1837 dev_err(&adapter->pdev->dev,
1838 "NDO set VF %d - invalid link state %d\n", vf, state);
1839 ret = -EINVAL;
1840 }
1841
1842 return ret;
1843 }
1844
ixgbe_ndo_set_vf_rss_query_en(struct net_device * netdev,int vf,bool setting)1845 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1846 bool setting)
1847 {
1848 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1849
1850 /* This operation is currently supported only for 82599 and x540
1851 * devices.
1852 */
1853 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1854 adapter->hw.mac.type >= ixgbe_mac_X550)
1855 return -EOPNOTSUPP;
1856
1857 if (vf >= adapter->num_vfs)
1858 return -EINVAL;
1859
1860 adapter->vfinfo[vf].rss_query_enabled = setting;
1861
1862 return 0;
1863 }
1864
ixgbe_ndo_set_vf_trust(struct net_device * netdev,int vf,bool setting)1865 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1866 {
1867 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1868
1869 if (vf >= adapter->num_vfs)
1870 return -EINVAL;
1871
1872 /* nothing to do */
1873 if (adapter->vfinfo[vf].trusted == setting)
1874 return 0;
1875
1876 adapter->vfinfo[vf].trusted = setting;
1877
1878 /* reset VF to reconfigure features */
1879 adapter->vfinfo[vf].clear_to_send = false;
1880 ixgbe_ping_vf(adapter, vf);
1881
1882 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1883
1884 return 0;
1885 }
1886
ixgbe_ndo_get_vf_config(struct net_device * netdev,int vf,struct ifla_vf_info * ivi)1887 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1888 int vf, struct ifla_vf_info *ivi)
1889 {
1890 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1891 if (vf >= adapter->num_vfs)
1892 return -EINVAL;
1893 ivi->vf = vf;
1894 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1895 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1896 ivi->min_tx_rate = 0;
1897 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1898 ivi->qos = adapter->vfinfo[vf].pf_qos;
1899 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1900 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1901 ivi->trusted = adapter->vfinfo[vf].trusted;
1902 ivi->linkstate = adapter->vfinfo[vf].link_state;
1903 return 0;
1904 }
1905