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 case ixgbe_mbox_api_16:
514 case ixgbe_mbox_api_17:
515 /* Version 1.1 supports jumbo frames on VFs if PF has
516 * jumbo frames enabled which means legacy VFs are
517 * disabled
518 */
519 if (pf_max_frame > ETH_FRAME_LEN)
520 break;
521 fallthrough;
522 default:
523 /* If the PF or VF are running w/ jumbo frames enabled
524 * we need to shut down the VF Rx path as we cannot
525 * support jumbo frames on legacy VFs
526 */
527 if ((pf_max_frame > ETH_FRAME_LEN) ||
528 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
529 err = -EINVAL;
530 break;
531 }
532
533 /* determine VF receive enable location */
534 vf_shift = vf % 32;
535 reg_offset = vf / 32;
536
537 /* enable or disable receive depending on error */
538 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
539 if (err)
540 vfre &= ~BIT(vf_shift);
541 else
542 vfre |= BIT(vf_shift);
543 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
544
545 if (err) {
546 e_err(drv, "VF max_frame %d out of range\n", max_frame);
547 return err;
548 }
549 }
550
551 /* pull current max frame size from hardware */
552 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
553 max_frs &= IXGBE_MHADD_MFS_MASK;
554 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
555
556 if (max_frs < max_frame) {
557 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
558 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
559 }
560
561 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
562
563 return 0;
564 }
565
ixgbe_set_vmolr(struct ixgbe_hw * hw,u32 vf,bool aupe)566 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
567 {
568 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
569 vmolr |= IXGBE_VMOLR_BAM;
570 if (aupe)
571 vmolr |= IXGBE_VMOLR_AUPE;
572 else
573 vmolr &= ~IXGBE_VMOLR_AUPE;
574 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
575 }
576
ixgbe_clear_vmvir(struct ixgbe_adapter * adapter,u32 vf)577 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
578 {
579 struct ixgbe_hw *hw = &adapter->hw;
580
581 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
582 }
583
ixgbe_clear_vf_vlans(struct ixgbe_adapter * adapter,u32 vf)584 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
585 {
586 struct ixgbe_hw *hw = &adapter->hw;
587 u32 vlvfb_mask, pool_mask, i;
588
589 /* create mask for VF and other pools */
590 pool_mask = ~BIT(VMDQ_P(0) % 32);
591 vlvfb_mask = BIT(vf % 32);
592
593 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
594 for (i = IXGBE_VLVF_ENTRIES; i--;) {
595 u32 bits[2], vlvfb, vid, vfta, vlvf;
596 u32 word = i * 2 + vf / 32;
597 u32 mask;
598
599 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
600
601 /* if our bit isn't set we can skip it */
602 if (!(vlvfb & vlvfb_mask))
603 continue;
604
605 /* clear our bit from vlvfb */
606 vlvfb ^= vlvfb_mask;
607
608 /* create 64b mask to chedk to see if we should clear VLVF */
609 bits[word % 2] = vlvfb;
610 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
611
612 /* if other pools are present, just remove ourselves */
613 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
614 (bits[VMDQ_P(0) / 32] & pool_mask))
615 goto update_vlvfb;
616
617 /* if PF is present, leave VFTA */
618 if (bits[0] || bits[1])
619 goto update_vlvf;
620
621 /* if we cannot determine VLAN just remove ourselves */
622 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
623 if (!vlvf)
624 goto update_vlvfb;
625
626 vid = vlvf & VLAN_VID_MASK;
627 mask = BIT(vid % 32);
628
629 /* clear bit from VFTA */
630 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
631 if (vfta & mask)
632 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
633 update_vlvf:
634 /* clear POOL selection enable */
635 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
636
637 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
638 vlvfb = 0;
639 update_vlvfb:
640 /* clear pool bits */
641 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
642 }
643 }
644
ixgbe_set_vf_macvlan(struct ixgbe_adapter * adapter,int vf,int index,unsigned char * mac_addr)645 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
646 int vf, int index, unsigned char *mac_addr)
647 {
648 struct vf_macvlans *entry;
649 bool found = false;
650 int retval = 0;
651
652 if (index <= 1) {
653 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
654 if (entry->vf == vf) {
655 entry->vf = -1;
656 entry->free = true;
657 entry->is_macvlan = false;
658 ixgbe_del_mac_filter(adapter,
659 entry->vf_macvlan, vf);
660 }
661 }
662 }
663
664 /*
665 * If index was zero then we were asked to clear the uc list
666 * for the VF. We're done.
667 */
668 if (!index)
669 return 0;
670
671 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
672 if (entry->free) {
673 found = true;
674 break;
675 }
676 }
677
678 /*
679 * If we traversed the entire list and didn't find a free entry
680 * then we're out of space on the RAR table. It's also possible
681 * for the &adapter->vf_mvs.l list to be empty because the original
682 * memory allocation for the list failed, which is not fatal but does
683 * mean we can't support VF requests for MACVLAN because we couldn't
684 * allocate memory for the list management required.
685 */
686 if (!found)
687 return -ENOSPC;
688
689 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
690 if (retval < 0)
691 return retval;
692
693 entry->free = false;
694 entry->is_macvlan = true;
695 entry->vf = vf;
696 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
697
698 return 0;
699 }
700
ixgbe_vf_reset_event(struct ixgbe_adapter * adapter,u32 vf)701 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
702 {
703 struct ixgbe_hw *hw = &adapter->hw;
704 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
705 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
706 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
707 u8 num_tcs = adapter->hw_tcs;
708 u32 reg_val;
709 u32 queue;
710
711 /* remove VLAN filters belonging to this VF */
712 ixgbe_clear_vf_vlans(adapter, vf);
713
714 /* add back PF assigned VLAN or VLAN 0 */
715 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
716
717 /* reset offloads to defaults */
718 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
719
720 /* set outgoing tags for VFs */
721 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
722 ixgbe_clear_vmvir(adapter, vf);
723 } else {
724 if (vfinfo->pf_qos || !num_tcs)
725 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
726 vfinfo->pf_qos, vf);
727 else
728 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
729 adapter->default_up, vf);
730
731 if (vfinfo->spoofchk_enabled) {
732 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
733 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
734 }
735 }
736
737 /* reset multicast table array for vf */
738 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
739
740 /* clear any ipsec table info */
741 ixgbe_ipsec_vf_clear(adapter, vf);
742
743 /* Flush and reset the mta with the new values */
744 ixgbe_set_rx_mode(adapter->netdev);
745
746 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
747 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
748
749 /* reset VF api back to unknown */
750 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
751
752 /* Restart each queue for given VF */
753 for (queue = 0; queue < q_per_pool; queue++) {
754 unsigned int reg_idx = (vf * q_per_pool) + queue;
755
756 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
757
758 /* Re-enabling only configured queues */
759 if (reg_val) {
760 reg_val |= IXGBE_TXDCTL_ENABLE;
761 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
762 reg_val &= ~IXGBE_TXDCTL_ENABLE;
763 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
764 }
765 }
766
767 IXGBE_WRITE_FLUSH(hw);
768 }
769
ixgbe_vf_clear_mbx(struct ixgbe_adapter * adapter,u32 vf)770 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
771 {
772 struct ixgbe_hw *hw = &adapter->hw;
773 u32 word;
774
775 /* Clear VF's mailbox memory */
776 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
777 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
778
779 IXGBE_WRITE_FLUSH(hw);
780 }
781
ixgbe_set_vf_mac(struct ixgbe_adapter * adapter,int vf,unsigned char * mac_addr)782 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
783 int vf, unsigned char *mac_addr)
784 {
785 int retval;
786
787 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
788 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
789 if (retval >= 0)
790 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
791 ETH_ALEN);
792 else
793 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);
794
795 return retval;
796 }
797
ixgbe_vf_configuration(struct pci_dev * pdev,unsigned int event_mask)798 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
799 {
800 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
801 unsigned int vfn = (event_mask & 0x3f);
802
803 bool enable = ((event_mask & 0x10000000U) != 0);
804
805 if (enable)
806 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
807
808 return 0;
809 }
810
ixgbe_write_qde(struct ixgbe_adapter * adapter,u32 vf,u32 qde)811 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
812 u32 qde)
813 {
814 struct ixgbe_hw *hw = &adapter->hw;
815 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
816 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
817 int i;
818
819 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
820 u32 reg;
821
822 /* flush previous write */
823 IXGBE_WRITE_FLUSH(hw);
824
825 /* indicate to hardware that we want to set drop enable */
826 reg = IXGBE_QDE_WRITE | qde;
827 reg |= i << IXGBE_QDE_IDX_SHIFT;
828 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
829 }
830 }
831
832 /**
833 * ixgbe_set_vf_rx_tx - Set VF rx tx
834 * @adapter: Pointer to adapter struct
835 * @vf: VF identifier
836 *
837 * Set or reset correct transmit and receive for vf
838 **/
ixgbe_set_vf_rx_tx(struct ixgbe_adapter * adapter,int vf)839 static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)
840 {
841 u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;
842 struct ixgbe_hw *hw = &adapter->hw;
843 u32 reg_offset, vf_shift;
844
845 vf_shift = vf % 32;
846 reg_offset = vf / 32;
847
848 reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
849 reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
850
851 if (adapter->vfinfo[vf].link_enable) {
852 reg_req_tx = reg_cur_tx | 1 << vf_shift;
853 reg_req_rx = reg_cur_rx | 1 << vf_shift;
854 } else {
855 reg_req_tx = reg_cur_tx & ~(1 << vf_shift);
856 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
857 }
858
859 /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
860 * For more info take a look at ixgbe_set_vf_lpe
861 */
862 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
863 struct net_device *dev = adapter->netdev;
864 int pf_max_frame = dev->mtu + ETH_HLEN;
865
866 #if IS_ENABLED(CONFIG_FCOE)
867 if (dev->fcoe_mtu)
868 pf_max_frame = max_t(int, pf_max_frame,
869 IXGBE_FCOE_JUMBO_FRAME_SIZE);
870 #endif /* CONFIG_FCOE */
871
872 if (pf_max_frame > ETH_FRAME_LEN)
873 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
874 }
875
876 /* Enable/Disable particular VF */
877 if (reg_cur_tx != reg_req_tx)
878 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx);
879 if (reg_cur_rx != reg_req_rx)
880 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx);
881 }
882
ixgbe_vf_reset_msg(struct ixgbe_adapter * adapter,u32 vf)883 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
884 {
885 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
886 struct ixgbe_hw *hw = &adapter->hw;
887 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
888 u32 reg, reg_offset, vf_shift;
889 u32 msgbuf[4] = {0, 0, 0, 0};
890 u8 *addr = (u8 *)(&msgbuf[1]);
891 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
892 int i;
893
894 e_info(probe, "VF Reset msg received from vf %d\n", vf);
895
896 /* reset the filters for the device */
897 ixgbe_vf_reset_event(adapter, vf);
898
899 ixgbe_vf_clear_mbx(adapter, vf);
900
901 /* set vf mac address */
902 if (!is_zero_ether_addr(vf_mac))
903 ixgbe_set_vf_mac(adapter, vf, vf_mac);
904
905 vf_shift = vf % 32;
906 reg_offset = vf / 32;
907
908 /* force drop enable for all VF Rx queues */
909 reg = IXGBE_QDE_ENABLE;
910 if (adapter->vfinfo[vf].pf_vlan)
911 reg |= IXGBE_QDE_HIDE_VLAN;
912
913 ixgbe_write_qde(adapter, vf, reg);
914
915 ixgbe_set_vf_rx_tx(adapter, vf);
916
917 /* enable VF mailbox for further messages */
918 adapter->vfinfo[vf].clear_to_send = true;
919
920 /* Enable counting of spoofed packets in the SSVPC register */
921 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
922 reg |= BIT(vf_shift);
923 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
924
925 /*
926 * Reset the VFs TDWBAL and TDWBAH registers
927 * which are not cleared by an FLR
928 */
929 for (i = 0; i < q_per_pool; i++) {
930 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
931 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
932 }
933
934 /* reply to reset with ack and vf mac address */
935 msgbuf[0] = IXGBE_VF_RESET;
936 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
937 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
938 memcpy(addr, vf_mac, ETH_ALEN);
939 } else {
940 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
941 }
942
943 /*
944 * Piggyback the multicast filter type so VF can compute the
945 * correct vectors
946 */
947 msgbuf[3] = hw->mac.mc_filter_type;
948 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
949
950 return 0;
951 }
952
ixgbe_set_vf_mac_addr(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)953 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
954 u32 *msgbuf, u32 vf)
955 {
956 u8 *new_mac = ((u8 *)(&msgbuf[1]));
957
958 if (!is_valid_ether_addr(new_mac)) {
959 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
960 return -1;
961 }
962
963 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
964 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
965 e_warn(drv,
966 "VF %d attempted to override administratively set MAC address\n"
967 "Reload the VF driver to resume operations\n",
968 vf);
969 return -1;
970 }
971
972 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
973 }
974
ixgbe_set_vf_vlan_msg(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)975 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
976 u32 *msgbuf, u32 vf)
977 {
978 u32 add = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
979 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
980 u8 tcs = adapter->hw_tcs;
981
982 if (adapter->vfinfo[vf].pf_vlan || tcs) {
983 e_warn(drv,
984 "VF %d attempted to override administratively set VLAN configuration\n"
985 "Reload the VF driver to resume operations\n",
986 vf);
987 return -1;
988 }
989
990 /* VLAN 0 is a special case, don't allow it to be removed */
991 if (!vid && !add)
992 return 0;
993
994 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
995 }
996
ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)997 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
998 u32 *msgbuf, u32 vf)
999 {
1000 u8 *new_mac = ((u8 *)(&msgbuf[1]));
1001 int index = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
1002 int err;
1003
1004 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
1005 index > 0) {
1006 e_warn(drv,
1007 "VF %d requested MACVLAN filter but is administratively denied\n",
1008 vf);
1009 return -1;
1010 }
1011
1012 /* An non-zero index indicates the VF is setting a filter */
1013 if (index) {
1014 if (!is_valid_ether_addr(new_mac)) {
1015 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
1016 return -1;
1017 }
1018
1019 /*
1020 * If the VF is allowed to set MAC filters then turn off
1021 * anti-spoofing to avoid false positives.
1022 */
1023 if (adapter->vfinfo[vf].spoofchk_enabled) {
1024 struct ixgbe_hw *hw = &adapter->hw;
1025
1026 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
1027 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1028 }
1029 }
1030
1031 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
1032 if (err == -ENOSPC)
1033 e_warn(drv,
1034 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1035 vf);
1036
1037 return err < 0;
1038 }
1039
ixgbe_negotiate_vf_api(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1040 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1041 u32 *msgbuf, u32 vf)
1042 {
1043 int api = msgbuf[1];
1044
1045 switch (api) {
1046 case ixgbe_mbox_api_10:
1047 case ixgbe_mbox_api_11:
1048 case ixgbe_mbox_api_12:
1049 case ixgbe_mbox_api_13:
1050 case ixgbe_mbox_api_14:
1051 case ixgbe_mbox_api_16:
1052 case ixgbe_mbox_api_17:
1053 adapter->vfinfo[vf].vf_api = api;
1054 return 0;
1055 default:
1056 break;
1057 }
1058
1059 e_dbg(drv, "VF %d requested unsupported api version %u\n", vf, api);
1060
1061 return -1;
1062 }
1063
ixgbe_get_vf_queues(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1064 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1065 u32 *msgbuf, u32 vf)
1066 {
1067 struct net_device *dev = adapter->netdev;
1068 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1069 unsigned int default_tc = 0;
1070 u8 num_tcs = adapter->hw_tcs;
1071
1072 /* verify the PF is supporting the correct APIs */
1073 switch (adapter->vfinfo[vf].vf_api) {
1074 case ixgbe_mbox_api_20:
1075 case ixgbe_mbox_api_11:
1076 case ixgbe_mbox_api_12:
1077 case ixgbe_mbox_api_13:
1078 case ixgbe_mbox_api_14:
1079 case ixgbe_mbox_api_16:
1080 case ixgbe_mbox_api_17:
1081 break;
1082 default:
1083 return -1;
1084 }
1085
1086 /* only allow 1 Tx queue for bandwidth limiting */
1087 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1088 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1089
1090 /* if TCs > 1 determine which TC belongs to default user priority */
1091 if (num_tcs > 1)
1092 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1093
1094 /* notify VF of need for VLAN tag stripping, and correct queue */
1095 if (num_tcs)
1096 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1097 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1098 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1099 else
1100 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1101
1102 /* notify VF of default queue */
1103 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1104
1105 return 0;
1106 }
1107
ixgbe_get_vf_reta(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1108 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1109 {
1110 u32 i, j;
1111 u32 *out_buf = &msgbuf[1];
1112 const u8 *reta = adapter->rss_indir_tbl;
1113 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1114
1115 /* Check if operation is permitted */
1116 if (!adapter->vfinfo[vf].rss_query_enabled)
1117 return -EPERM;
1118
1119 /* verify the PF is supporting the correct API */
1120 switch (adapter->vfinfo[vf].vf_api) {
1121 case ixgbe_mbox_api_17:
1122 case ixgbe_mbox_api_16:
1123 case ixgbe_mbox_api_14:
1124 case ixgbe_mbox_api_13:
1125 case ixgbe_mbox_api_12:
1126 break;
1127 default:
1128 return -EOPNOTSUPP;
1129 }
1130
1131 /* This mailbox command is supported (required) only for 82599 and x540
1132 * VFs which support up to 4 RSS queues. Therefore we will compress the
1133 * RETA by saving only 2 bits from each entry. This way we will be able
1134 * to transfer the whole RETA in a single mailbox operation.
1135 */
1136 for (i = 0; i < reta_size / 16; i++) {
1137 out_buf[i] = 0;
1138 for (j = 0; j < 16; j++)
1139 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1140 }
1141
1142 return 0;
1143 }
1144
ixgbe_get_vf_rss_key(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1145 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1146 u32 *msgbuf, u32 vf)
1147 {
1148 u32 *rss_key = &msgbuf[1];
1149
1150 /* Check if the operation is permitted */
1151 if (!adapter->vfinfo[vf].rss_query_enabled)
1152 return -EPERM;
1153
1154 /* verify the PF is supporting the correct API */
1155 switch (adapter->vfinfo[vf].vf_api) {
1156 case ixgbe_mbox_api_17:
1157 case ixgbe_mbox_api_16:
1158 case ixgbe_mbox_api_14:
1159 case ixgbe_mbox_api_13:
1160 case ixgbe_mbox_api_12:
1161 break;
1162 default:
1163 return -EOPNOTSUPP;
1164 }
1165
1166 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1167
1168 return 0;
1169 }
1170
ixgbe_update_vf_xcast_mode(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1171 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1172 u32 *msgbuf, u32 vf)
1173 {
1174 struct ixgbe_hw *hw = &adapter->hw;
1175 int xcast_mode = msgbuf[1];
1176 u32 vmolr, fctrl, disable, enable;
1177
1178 /* verify the PF is supporting the correct APIs */
1179 switch (adapter->vfinfo[vf].vf_api) {
1180 case ixgbe_mbox_api_12:
1181 /* promisc introduced in 1.3 version */
1182 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1183 return -EOPNOTSUPP;
1184 fallthrough;
1185 case ixgbe_mbox_api_13:
1186 case ixgbe_mbox_api_14:
1187 case ixgbe_mbox_api_16:
1188 case ixgbe_mbox_api_17:
1189 break;
1190 default:
1191 return -EOPNOTSUPP;
1192 }
1193
1194 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1195 !adapter->vfinfo[vf].trusted) {
1196 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1197 }
1198
1199 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1200 goto out;
1201
1202 switch (xcast_mode) {
1203 case IXGBEVF_XCAST_MODE_NONE:
1204 disable = IXGBE_VMOLR_ROMPE |
1205 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1206 enable = IXGBE_VMOLR_BAM;
1207 break;
1208 case IXGBEVF_XCAST_MODE_MULTI:
1209 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1210 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1211 break;
1212 case IXGBEVF_XCAST_MODE_ALLMULTI:
1213 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1214 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1215 break;
1216 case IXGBEVF_XCAST_MODE_PROMISC:
1217 if (hw->mac.type <= ixgbe_mac_82599EB)
1218 return -EOPNOTSUPP;
1219
1220 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1221 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1222 /* VF promisc requires PF in promisc */
1223 e_warn(drv,
1224 "Enabling VF promisc requires PF in promisc\n");
1225 return -EPERM;
1226 }
1227
1228 disable = IXGBE_VMOLR_VPE;
1229 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1230 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;
1231 break;
1232 default:
1233 return -EOPNOTSUPP;
1234 }
1235
1236 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1237 vmolr &= ~disable;
1238 vmolr |= enable;
1239 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1240
1241 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1242
1243 out:
1244 msgbuf[1] = xcast_mode;
1245
1246 return 0;
1247 }
1248
ixgbe_get_vf_link_state(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1249 static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
1250 u32 *msgbuf, u32 vf)
1251 {
1252 u32 *link_state = &msgbuf[1];
1253
1254 /* verify the PF is supporting the correct API */
1255 switch (adapter->vfinfo[vf].vf_api) {
1256 case ixgbe_mbox_api_12:
1257 case ixgbe_mbox_api_13:
1258 case ixgbe_mbox_api_14:
1259 case ixgbe_mbox_api_16:
1260 case ixgbe_mbox_api_17:
1261 break;
1262 default:
1263 return -EOPNOTSUPP;
1264 }
1265
1266 *link_state = adapter->vfinfo[vf].link_enable;
1267
1268 return 0;
1269 }
1270
1271 /**
1272 * ixgbe_send_vf_link_status - send link status data to VF
1273 * @adapter: pointer to adapter struct
1274 * @msgbuf: pointer to message buffers
1275 * @vf: VF identifier
1276 *
1277 * Reply for IXGBE_VF_GET_PF_LINK_STATE mbox command sending link status data.
1278 *
1279 * Return: 0 on success or -EOPNOTSUPP when operation is not supported.
1280 */
ixgbe_send_vf_link_status(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1281 static int ixgbe_send_vf_link_status(struct ixgbe_adapter *adapter,
1282 u32 *msgbuf, u32 vf)
1283 {
1284 struct ixgbe_hw *hw = &adapter->hw;
1285
1286 switch (adapter->vfinfo[vf].vf_api) {
1287 case ixgbe_mbox_api_16:
1288 case ixgbe_mbox_api_17:
1289 if (hw->mac.type != ixgbe_mac_e610)
1290 return -EOPNOTSUPP;
1291 break;
1292 default:
1293 return -EOPNOTSUPP;
1294 }
1295 /* Simply provide stored values as watchdog & link status events take
1296 * care of its freshness.
1297 */
1298 msgbuf[1] = adapter->link_speed;
1299 msgbuf[2] = adapter->link_up;
1300
1301 return 0;
1302 }
1303
1304 /**
1305 * ixgbe_negotiate_vf_features - negotiate supported features with VF driver
1306 * @adapter: pointer to adapter struct
1307 * @msgbuf: pointer to message buffers
1308 * @vf: VF identifier
1309 *
1310 * Return: 0 on success or -EOPNOTSUPP when operation is not supported.
1311 */
ixgbe_negotiate_vf_features(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1312 static int ixgbe_negotiate_vf_features(struct ixgbe_adapter *adapter,
1313 u32 *msgbuf, u32 vf)
1314 {
1315 u32 features = msgbuf[1];
1316
1317 switch (adapter->vfinfo[vf].vf_api) {
1318 case ixgbe_mbox_api_17:
1319 break;
1320 default:
1321 return -EOPNOTSUPP;
1322 }
1323
1324 features &= IXGBE_SUPPORTED_FEATURES;
1325 msgbuf[1] = features;
1326
1327 return 0;
1328 }
1329
ixgbe_rcv_msg_from_vf(struct ixgbe_adapter * adapter,u32 vf)1330 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1331 {
1332 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1333 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1334 struct ixgbe_hw *hw = &adapter->hw;
1335 int retval;
1336
1337 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1338
1339 if (retval) {
1340 pr_err("Error receiving message from VF\n");
1341 return retval;
1342 }
1343
1344 /* this is a message we already processed, do nothing */
1345 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1346 return 0;
1347
1348 /* flush the ack before we write any messages back */
1349 IXGBE_WRITE_FLUSH(hw);
1350
1351 if (msgbuf[0] == IXGBE_VF_RESET)
1352 return ixgbe_vf_reset_msg(adapter, vf);
1353
1354 /*
1355 * until the vf completes a virtual function reset it should not be
1356 * allowed to start any configuration.
1357 */
1358 if (!adapter->vfinfo[vf].clear_to_send) {
1359 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1360 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1361 return 0;
1362 }
1363
1364 switch ((msgbuf[0] & 0xFFFF)) {
1365 case IXGBE_VF_SET_MAC_ADDR:
1366 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1367 break;
1368 case IXGBE_VF_SET_MULTICAST:
1369 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1370 break;
1371 case IXGBE_VF_SET_VLAN:
1372 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1373 break;
1374 case IXGBE_VF_SET_LPE:
1375 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1376 break;
1377 case IXGBE_VF_SET_MACVLAN:
1378 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1379 break;
1380 case IXGBE_VF_API_NEGOTIATE:
1381 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1382 break;
1383 case IXGBE_VF_GET_QUEUES:
1384 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1385 break;
1386 case IXGBE_VF_GET_RETA:
1387 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1388 break;
1389 case IXGBE_VF_GET_RSS_KEY:
1390 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1391 break;
1392 case IXGBE_VF_UPDATE_XCAST_MODE:
1393 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1394 break;
1395 case IXGBE_VF_GET_LINK_STATE:
1396 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);
1397 break;
1398 case IXGBE_VF_IPSEC_ADD:
1399 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1400 break;
1401 case IXGBE_VF_IPSEC_DEL:
1402 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1403 break;
1404 case IXGBE_VF_GET_PF_LINK_STATE:
1405 retval = ixgbe_send_vf_link_status(adapter, msgbuf, vf);
1406 break;
1407 case IXGBE_VF_FEATURES_NEGOTIATE:
1408 retval = ixgbe_negotiate_vf_features(adapter, msgbuf, vf);
1409 break;
1410 default:
1411 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1412 retval = -EIO;
1413 break;
1414 }
1415
1416 /* notify the VF of the results of what it sent us */
1417 if (retval)
1418 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1419 else
1420 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1421
1422 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1423
1424 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1425
1426 return retval;
1427 }
1428
ixgbe_rcv_ack_from_vf(struct ixgbe_adapter * adapter,u32 vf)1429 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1430 {
1431 struct ixgbe_hw *hw = &adapter->hw;
1432 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1433
1434 /* if device isn't clear to send it shouldn't be reading either */
1435 if (!adapter->vfinfo[vf].clear_to_send)
1436 ixgbe_write_mbx(hw, &msg, 1, vf);
1437 }
1438
1439 /**
1440 * ixgbe_check_mdd_event - check for MDD event on all VFs
1441 * @adapter: pointer to ixgbe adapter
1442 *
1443 * Return: true if there is a VF on which MDD event occurred, false otherwise.
1444 */
ixgbe_check_mdd_event(struct ixgbe_adapter * adapter)1445 bool ixgbe_check_mdd_event(struct ixgbe_adapter *adapter)
1446 {
1447 struct ixgbe_hw *hw = &adapter->hw;
1448 DECLARE_BITMAP(vf_bitmap, 64);
1449 bool ret = false;
1450 int i;
1451
1452 if (!hw->mac.ops.handle_mdd)
1453 return false;
1454
1455 /* Did we have a malicious event */
1456 bitmap_zero(vf_bitmap, 64);
1457 hw->mac.ops.handle_mdd(hw, vf_bitmap);
1458
1459 /* Log any blocked queues and release lock */
1460 for_each_set_bit(i, vf_bitmap, 64) {
1461 dev_warn(&adapter->pdev->dev,
1462 "Malicious event on VF %d tx:%x rx:%x\n", i,
1463 IXGBE_READ_REG(hw, IXGBE_LVMMC_TX),
1464 IXGBE_READ_REG(hw, IXGBE_LVMMC_RX));
1465
1466 if (hw->mac.ops.restore_mdd_vf) {
1467 u32 ping;
1468
1469 hw->mac.ops.restore_mdd_vf(hw, i);
1470
1471 /* get the VF to rebuild its queues */
1472 adapter->vfinfo[i].clear_to_send = 0;
1473 ping = IXGBE_PF_CONTROL_MSG |
1474 IXGBE_VT_MSGTYPE_CTS;
1475 ixgbe_write_mbx(hw, &ping, 1, i);
1476 }
1477
1478 ret = true;
1479 }
1480
1481 return ret;
1482 }
1483
ixgbe_msg_task(struct ixgbe_adapter * adapter)1484 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1485 {
1486 struct ixgbe_hw *hw = &adapter->hw;
1487 unsigned long flags;
1488 u32 vf;
1489
1490 ixgbe_check_mdd_event(adapter);
1491
1492 spin_lock_irqsave(&adapter->vfs_lock, flags);
1493 for (vf = 0; vf < adapter->num_vfs; vf++) {
1494 /* process any reset requests */
1495 if (!ixgbe_check_for_rst(hw, vf))
1496 ixgbe_vf_reset_event(adapter, vf);
1497
1498 /* process any messages pending */
1499 if (!ixgbe_check_for_msg(hw, vf))
1500 ixgbe_rcv_msg_from_vf(adapter, vf);
1501
1502 /* process any acks */
1503 if (!ixgbe_check_for_ack(hw, vf))
1504 ixgbe_rcv_ack_from_vf(adapter, vf);
1505 }
1506 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
1507 }
1508
ixgbe_ping_vf(struct ixgbe_adapter * adapter,int vf)1509 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1510 {
1511 struct ixgbe_hw *hw = &adapter->hw;
1512 u32 ping;
1513
1514 ping = IXGBE_PF_CONTROL_MSG;
1515 if (adapter->vfinfo[vf].clear_to_send)
1516 ping |= IXGBE_VT_MSGTYPE_CTS;
1517 ixgbe_write_mbx(hw, &ping, 1, vf);
1518 }
1519
ixgbe_ping_all_vfs(struct ixgbe_adapter * adapter)1520 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1521 {
1522 struct ixgbe_hw *hw = &adapter->hw;
1523 u32 ping;
1524 int i;
1525
1526 for (i = 0 ; i < adapter->num_vfs; i++) {
1527 ping = IXGBE_PF_CONTROL_MSG;
1528 if (adapter->vfinfo[i].clear_to_send)
1529 ping |= IXGBE_VT_MSGTYPE_CTS;
1530 ixgbe_write_mbx(hw, &ping, 1, i);
1531 }
1532 }
1533
1534 /**
1535 * ixgbe_set_all_vfs - update vfs queues
1536 * @adapter: Pointer to adapter struct
1537 *
1538 * Update setting transmit and receive queues for all vfs
1539 **/
ixgbe_set_all_vfs(struct ixgbe_adapter * adapter)1540 void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)
1541 {
1542 int i;
1543
1544 for (i = 0 ; i < adapter->num_vfs; i++)
1545 ixgbe_set_vf_link_state(adapter, i,
1546 adapter->vfinfo[i].link_state);
1547 }
1548
ixgbe_ndo_set_vf_mac(struct net_device * netdev,int vf,u8 * mac)1549 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1550 {
1551 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1552 int retval;
1553
1554 if (vf >= adapter->num_vfs)
1555 return -EINVAL;
1556
1557 if (is_valid_ether_addr(mac)) {
1558 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1559 mac, vf);
1560 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1561
1562 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1563 if (retval >= 0) {
1564 adapter->vfinfo[vf].pf_set_mac = true;
1565
1566 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1567 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1568 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1569 }
1570 } else {
1571 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1572 }
1573 } else if (is_zero_ether_addr(mac)) {
1574 unsigned char *vf_mac_addr =
1575 adapter->vfinfo[vf].vf_mac_addresses;
1576
1577 /* nothing to do */
1578 if (is_zero_ether_addr(vf_mac_addr))
1579 return 0;
1580
1581 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1582
1583 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1584 if (retval >= 0) {
1585 adapter->vfinfo[vf].pf_set_mac = false;
1586 memcpy(vf_mac_addr, mac, ETH_ALEN);
1587 } else {
1588 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1589 }
1590 } else {
1591 retval = -EINVAL;
1592 }
1593
1594 return retval;
1595 }
1596
ixgbe_enable_port_vlan(struct ixgbe_adapter * adapter,int vf,u16 vlan,u8 qos)1597 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1598 u16 vlan, u8 qos)
1599 {
1600 struct ixgbe_hw *hw = &adapter->hw;
1601 int err;
1602
1603 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1604 if (err)
1605 goto out;
1606
1607 /* Revoke tagless access via VLAN 0 */
1608 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1609
1610 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1611 ixgbe_set_vmolr(hw, vf, false);
1612
1613 /* enable hide vlan on X550 */
1614 if (hw->mac.type >= ixgbe_mac_X550)
1615 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1616 IXGBE_QDE_HIDE_VLAN);
1617
1618 adapter->vfinfo[vf].pf_vlan = vlan;
1619 adapter->vfinfo[vf].pf_qos = qos;
1620 dev_info(&adapter->pdev->dev,
1621 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1622 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1623 dev_warn(&adapter->pdev->dev,
1624 "The VF VLAN has been set, but the PF device is not up.\n");
1625 dev_warn(&adapter->pdev->dev,
1626 "Bring the PF device up before attempting to use the VF device.\n");
1627 }
1628
1629 out:
1630 return err;
1631 }
1632
ixgbe_disable_port_vlan(struct ixgbe_adapter * adapter,int vf)1633 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1634 {
1635 struct ixgbe_hw *hw = &adapter->hw;
1636 int err;
1637
1638 err = ixgbe_set_vf_vlan(adapter, false,
1639 adapter->vfinfo[vf].pf_vlan, vf);
1640 /* Restore tagless access via VLAN 0 */
1641 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1642 ixgbe_clear_vmvir(adapter, vf);
1643 ixgbe_set_vmolr(hw, vf, true);
1644
1645 /* disable hide VLAN on X550 */
1646 if (hw->mac.type >= ixgbe_mac_X550)
1647 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1648
1649 adapter->vfinfo[vf].pf_vlan = 0;
1650 adapter->vfinfo[vf].pf_qos = 0;
1651
1652 return err;
1653 }
1654
ixgbe_ndo_set_vf_vlan(struct net_device * netdev,int vf,u16 vlan,u8 qos,__be16 vlan_proto)1655 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1656 u8 qos, __be16 vlan_proto)
1657 {
1658 int err = 0;
1659 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1660
1661 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1662 return -EINVAL;
1663 if (vlan_proto != htons(ETH_P_8021Q))
1664 return -EPROTONOSUPPORT;
1665 if (vlan || qos) {
1666 /* Check if there is already a port VLAN set, if so
1667 * we have to delete the old one first before we
1668 * can set the new one. The usage model had
1669 * previously assumed the user would delete the
1670 * old port VLAN before setting a new one but this
1671 * is not necessarily the case.
1672 */
1673 if (adapter->vfinfo[vf].pf_vlan)
1674 err = ixgbe_disable_port_vlan(adapter, vf);
1675 if (err)
1676 goto out;
1677 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1678 } else {
1679 err = ixgbe_disable_port_vlan(adapter, vf);
1680 }
1681
1682 out:
1683 return err;
1684 }
1685
ixgbe_link_mbps(struct ixgbe_adapter * adapter)1686 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1687 {
1688 switch (adapter->link_speed) {
1689 case IXGBE_LINK_SPEED_100_FULL:
1690 return 100;
1691 case IXGBE_LINK_SPEED_1GB_FULL:
1692 return 1000;
1693 case IXGBE_LINK_SPEED_10GB_FULL:
1694 return 10000;
1695 default:
1696 return 0;
1697 }
1698 }
1699
ixgbe_set_vf_rate_limit(struct ixgbe_adapter * adapter,int vf)1700 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1701 {
1702 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1703 struct ixgbe_hw *hw = &adapter->hw;
1704 u32 bcnrc_val = 0;
1705 u16 queue, queues_per_pool;
1706 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1707
1708 if (tx_rate) {
1709 /* start with base link speed value */
1710 bcnrc_val = adapter->vf_rate_link_speed;
1711
1712 /* Calculate the rate factor values to set */
1713 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1714 bcnrc_val /= tx_rate;
1715
1716 /* clear everything but the rate factor */
1717 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1718 IXGBE_RTTBCNRC_RF_DEC_MASK;
1719
1720 /* enable the rate scheduler */
1721 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1722 }
1723
1724 /*
1725 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1726 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1727 * and 0x004 otherwise.
1728 */
1729 switch (hw->mac.type) {
1730 case ixgbe_mac_82599EB:
1731 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1732 break;
1733 case ixgbe_mac_X540:
1734 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1735 break;
1736 default:
1737 break;
1738 }
1739
1740 /* determine how many queues per pool based on VMDq mask */
1741 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1742
1743 /* write value for all Tx queues belonging to VF */
1744 for (queue = 0; queue < queues_per_pool; queue++) {
1745 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1746
1747 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1748 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1749 }
1750 }
1751
ixgbe_check_vf_rate_limit(struct ixgbe_adapter * adapter)1752 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1753 {
1754 int i;
1755
1756 /* VF Tx rate limit was not set */
1757 if (!adapter->vf_rate_link_speed)
1758 return;
1759
1760 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1761 adapter->vf_rate_link_speed = 0;
1762 dev_info(&adapter->pdev->dev,
1763 "Link speed has been changed. VF Transmit rate is disabled\n");
1764 }
1765
1766 for (i = 0; i < adapter->num_vfs; i++) {
1767 if (!adapter->vf_rate_link_speed)
1768 adapter->vfinfo[i].tx_rate = 0;
1769
1770 ixgbe_set_vf_rate_limit(adapter, i);
1771 }
1772 }
1773
ixgbe_ndo_set_vf_bw(struct net_device * netdev,int vf,int min_tx_rate,int max_tx_rate)1774 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1775 int max_tx_rate)
1776 {
1777 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1778 int link_speed;
1779
1780 /* verify VF is active */
1781 if (vf >= adapter->num_vfs)
1782 return -EINVAL;
1783
1784 /* verify link is up */
1785 if (!adapter->link_up)
1786 return -EINVAL;
1787
1788 /* verify we are linked at 10Gbps */
1789 link_speed = ixgbe_link_mbps(adapter);
1790 if (link_speed != 10000)
1791 return -EINVAL;
1792
1793 if (min_tx_rate)
1794 return -EINVAL;
1795
1796 /* rate limit cannot be less than 10Mbs or greater than link speed */
1797 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1798 return -EINVAL;
1799
1800 /* store values */
1801 adapter->vf_rate_link_speed = link_speed;
1802 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1803
1804 /* update hardware configuration */
1805 ixgbe_set_vf_rate_limit(adapter, vf);
1806
1807 return 0;
1808 }
1809
ixgbe_ndo_set_vf_spoofchk(struct net_device * netdev,int vf,bool setting)1810 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1811 {
1812 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1813 struct ixgbe_hw *hw = &adapter->hw;
1814
1815 if (vf >= adapter->num_vfs)
1816 return -EINVAL;
1817
1818 adapter->vfinfo[vf].spoofchk_enabled = setting;
1819
1820 /* configure MAC spoofing */
1821 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1822
1823 /* configure VLAN spoofing */
1824 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1825
1826 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1827 * calling set_ethertype_anti_spoofing for each VF in loop below
1828 */
1829 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1830 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1831 (IXGBE_ETQF_FILTER_EN |
1832 IXGBE_ETQF_TX_ANTISPOOF |
1833 ETH_P_LLDP));
1834
1835 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1836 (IXGBE_ETQF_FILTER_EN |
1837 IXGBE_ETQF_TX_ANTISPOOF |
1838 ETH_P_PAUSE));
1839
1840 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1841 }
1842
1843 return 0;
1844 }
1845
1846 /**
1847 * ixgbe_set_vf_link_state - Set link state
1848 * @adapter: Pointer to adapter struct
1849 * @vf: VF identifier
1850 * @state: required link state
1851 *
1852 * Set a link force state on/off a single vf
1853 **/
ixgbe_set_vf_link_state(struct ixgbe_adapter * adapter,int vf,int state)1854 void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)
1855 {
1856 adapter->vfinfo[vf].link_state = state;
1857
1858 switch (state) {
1859 case IFLA_VF_LINK_STATE_AUTO:
1860 if (test_bit(__IXGBE_DOWN, &adapter->state))
1861 adapter->vfinfo[vf].link_enable = false;
1862 else
1863 adapter->vfinfo[vf].link_enable = true;
1864 break;
1865 case IFLA_VF_LINK_STATE_ENABLE:
1866 adapter->vfinfo[vf].link_enable = true;
1867 break;
1868 case IFLA_VF_LINK_STATE_DISABLE:
1869 adapter->vfinfo[vf].link_enable = false;
1870 break;
1871 }
1872
1873 ixgbe_set_vf_rx_tx(adapter, vf);
1874
1875 /* restart the VF */
1876 adapter->vfinfo[vf].clear_to_send = false;
1877 ixgbe_ping_vf(adapter, vf);
1878 }
1879
1880 /**
1881 * ixgbe_ndo_set_vf_link_state - Set link state
1882 * @netdev: network interface device structure
1883 * @vf: VF identifier
1884 * @state: required link state
1885 *
1886 * Set the link state of a specified VF, regardless of physical link state
1887 **/
ixgbe_ndo_set_vf_link_state(struct net_device * netdev,int vf,int state)1888 int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)
1889 {
1890 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1891 int ret = 0;
1892
1893 if (vf < 0 || vf >= adapter->num_vfs) {
1894 dev_err(&adapter->pdev->dev,
1895 "NDO set VF link - invalid VF identifier %d\n", vf);
1896 return -EINVAL;
1897 }
1898
1899 switch (state) {
1900 case IFLA_VF_LINK_STATE_ENABLE:
1901 dev_info(&adapter->pdev->dev,
1902 "NDO set VF %d link state %d - not supported\n",
1903 vf, state);
1904 break;
1905 case IFLA_VF_LINK_STATE_DISABLE:
1906 dev_info(&adapter->pdev->dev,
1907 "NDO set VF %d link state disable\n", vf);
1908 ixgbe_set_vf_link_state(adapter, vf, state);
1909 break;
1910 case IFLA_VF_LINK_STATE_AUTO:
1911 dev_info(&adapter->pdev->dev,
1912 "NDO set VF %d link state auto\n", vf);
1913 ixgbe_set_vf_link_state(adapter, vf, state);
1914 break;
1915 default:
1916 dev_err(&adapter->pdev->dev,
1917 "NDO set VF %d - invalid link state %d\n", vf, state);
1918 ret = -EINVAL;
1919 }
1920
1921 return ret;
1922 }
1923
ixgbe_ndo_set_vf_rss_query_en(struct net_device * netdev,int vf,bool setting)1924 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1925 bool setting)
1926 {
1927 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1928
1929 /* This operation is currently supported only for 82599 and x540
1930 * devices.
1931 */
1932 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1933 adapter->hw.mac.type >= ixgbe_mac_X550)
1934 return -EOPNOTSUPP;
1935
1936 if (vf >= adapter->num_vfs)
1937 return -EINVAL;
1938
1939 adapter->vfinfo[vf].rss_query_enabled = setting;
1940
1941 return 0;
1942 }
1943
ixgbe_ndo_set_vf_trust(struct net_device * netdev,int vf,bool setting)1944 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1945 {
1946 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1947
1948 if (vf >= adapter->num_vfs)
1949 return -EINVAL;
1950
1951 /* nothing to do */
1952 if (adapter->vfinfo[vf].trusted == setting)
1953 return 0;
1954
1955 adapter->vfinfo[vf].trusted = setting;
1956
1957 /* reset VF to reconfigure features */
1958 adapter->vfinfo[vf].clear_to_send = false;
1959 ixgbe_ping_vf(adapter, vf);
1960
1961 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1962
1963 return 0;
1964 }
1965
ixgbe_ndo_get_vf_config(struct net_device * netdev,int vf,struct ifla_vf_info * ivi)1966 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1967 int vf, struct ifla_vf_info *ivi)
1968 {
1969 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1970 if (vf >= adapter->num_vfs)
1971 return -EINVAL;
1972 ivi->vf = vf;
1973 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1974 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1975 ivi->min_tx_rate = 0;
1976 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1977 ivi->qos = adapter->vfinfo[vf].pf_qos;
1978 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1979 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1980 ivi->trusted = adapter->vfinfo[vf].trusted;
1981 ivi->linkstate = adapter->vfinfo[vf].link_state;
1982 return 0;
1983 }
1984