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 = kzalloc_objs(struct vf_macvlans, num_vf_macvlans);
41 if (mv_list) {
42 for (i = 0; i < num_vf_macvlans; i++) {
43 mv_list[i].vf = -1;
44 mv_list[i].free = true;
45 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
46 }
47 adapter->mv_list = mv_list;
48 }
49 }
50
__ixgbe_enable_sriov(struct ixgbe_adapter * adapter,unsigned int num_vfs)51 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
52 unsigned int num_vfs)
53 {
54 struct ixgbe_hw *hw = &adapter->hw;
55 int i;
56
57 if (adapter->xdp_prog) {
58 e_warn(probe, "SRIOV is not supported with XDP\n");
59 return -EINVAL;
60 }
61
62 /* Enable VMDq flag so device will be set in VM mode */
63 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
64 IXGBE_FLAG_VMDQ_ENABLED;
65
66 /* Allocate memory for per VF control structures */
67 adapter->vfinfo = kzalloc_objs(struct vf_data_storage, num_vfs);
68 if (!adapter->vfinfo)
69 return -ENOMEM;
70
71 adapter->num_vfs = num_vfs;
72
73 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
74 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
75
76 /* Initialize default switching mode VEB */
77 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
78 adapter->bridge_mode = BRIDGE_MODE_VEB;
79
80 /* limit traffic classes based on VFs enabled */
81 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
82 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
83 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
84 } else if (num_vfs < 32) {
85 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
86 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
87 } else {
88 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
89 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
90 }
91
92 /* Disable RSC when in SR-IOV mode */
93 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
94 IXGBE_FLAG2_RSC_ENABLED);
95
96 for (i = 0; i < num_vfs; i++) {
97 /* enable spoof checking for all VFs */
98 adapter->vfinfo[i].spoofchk_enabled = true;
99 adapter->vfinfo[i].link_enable = true;
100
101 /* We support VF RSS querying only for 82599 and x540
102 * devices at the moment. These devices share RSS
103 * indirection table and RSS hash key with PF therefore
104 * we want to disable the querying by default.
105 */
106 adapter->vfinfo[i].rss_query_enabled = false;
107
108 /* Untrust all VFs */
109 adapter->vfinfo[i].trusted = false;
110
111 /* set the default xcast mode */
112 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
113 }
114
115 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
116 return 0;
117 }
118
119 /**
120 * ixgbe_get_vfs - Find and take references to all vf devices
121 * @adapter: Pointer to adapter struct
122 */
ixgbe_get_vfs(struct ixgbe_adapter * adapter)123 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
124 {
125 struct pci_dev *pdev = adapter->pdev;
126 u16 vendor = pdev->vendor;
127 struct pci_dev *vfdev;
128 int vf = 0;
129 u16 vf_id;
130 int pos;
131
132 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
133 if (!pos)
134 return;
135 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
136
137 vfdev = pci_get_device(vendor, vf_id, NULL);
138 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
139 if (!vfdev->is_virtfn)
140 continue;
141 if (vfdev->physfn != pdev)
142 continue;
143 if (vf >= adapter->num_vfs)
144 continue;
145 pci_dev_get(vfdev);
146 adapter->vfinfo[vf].vfdev = vfdev;
147 ++vf;
148 }
149 }
150
151 /* Note this function is called when the user wants to enable SR-IOV
152 * VFs using the now deprecated module parameter
153 */
ixgbe_enable_sriov(struct ixgbe_adapter * adapter,unsigned int max_vfs)154 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
155 {
156 int pre_existing_vfs = 0;
157 unsigned int num_vfs;
158
159 pre_existing_vfs = pci_num_vf(adapter->pdev);
160 if (!pre_existing_vfs && !max_vfs)
161 return;
162
163 /* If there are pre-existing VFs then we have to force
164 * use of that many - over ride any module parameter value.
165 * This may result from the user unloading the PF driver
166 * while VFs were assigned to guest VMs or because the VFs
167 * have been created via the new PCI SR-IOV sysfs interface.
168 */
169 if (pre_existing_vfs) {
170 num_vfs = pre_existing_vfs;
171 dev_warn(&adapter->pdev->dev,
172 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
173 } else {
174 int err;
175 /*
176 * The 82599 supports up to 64 VFs per physical function
177 * but this implementation limits allocation to 63 so that
178 * basic networking resources are still available to the
179 * physical function. If the user requests greater than
180 * 63 VFs then it is an error - reset to default of zero.
181 */
182 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
183
184 err = pci_enable_sriov(adapter->pdev, num_vfs);
185 if (err) {
186 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
187 return;
188 }
189 }
190
191 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
192 ixgbe_get_vfs(adapter);
193 return;
194 }
195
196 /* If we have gotten to this point then there is no memory available
197 * to manage the VF devices - print message and bail.
198 */
199 e_err(probe, "Unable to allocate memory for VF Data Storage - "
200 "SRIOV disabled\n");
201 ixgbe_disable_sriov(adapter);
202 }
203
204 #endif /* #ifdef CONFIG_PCI_IOV */
ixgbe_disable_sriov(struct ixgbe_adapter * adapter)205 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
206 {
207 unsigned int num_vfs = adapter->num_vfs, vf;
208 struct ixgbe_hw *hw = &adapter->hw;
209 unsigned long flags;
210 int rss;
211
212 spin_lock_irqsave(&adapter->vfs_lock, flags);
213 /* set num VFs to 0 to prevent access to vfinfo */
214 adapter->num_vfs = 0;
215 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
216
217 /* put the reference to all of the vf devices */
218 for (vf = 0; vf < num_vfs; ++vf) {
219 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
220
221 if (!vfdev)
222 continue;
223 adapter->vfinfo[vf].vfdev = NULL;
224 pci_dev_put(vfdev);
225 }
226
227 /* free VF control structures */
228 kfree(adapter->vfinfo);
229 adapter->vfinfo = NULL;
230
231 /* free macvlan list */
232 kfree(adapter->mv_list);
233 adapter->mv_list = NULL;
234
235 /* if SR-IOV is already disabled then there is nothing to do */
236 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
237 return 0;
238
239 if (hw->mac.ops.disable_mdd)
240 hw->mac.ops.disable_mdd(hw);
241
242 #ifdef CONFIG_PCI_IOV
243 /*
244 * If our VFs are assigned we cannot shut down SR-IOV
245 * without causing issues, so just leave the hardware
246 * available but disabled
247 */
248 if (pci_vfs_assigned(adapter->pdev)) {
249 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
250 return -EPERM;
251 }
252 /* disable iov and allow time for transactions to clear */
253 pci_disable_sriov(adapter->pdev);
254 #endif
255
256 /* Disable VMDq flag so device will be set in VM mode */
257 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
258 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
259 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
260 rss = min_t(int, ixgbe_max_rss_indices(adapter),
261 num_online_cpus());
262 } else {
263 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
264 }
265
266 adapter->ring_feature[RING_F_VMDQ].offset = 0;
267 adapter->ring_feature[RING_F_RSS].limit = rss;
268
269 /* take a breather then clean up driver data */
270 msleep(100);
271 return 0;
272 }
273
ixgbe_pci_sriov_enable(struct pci_dev * dev,int num_vfs)274 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
275 {
276 #ifdef CONFIG_PCI_IOV
277 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
278 int pre_existing_vfs = pci_num_vf(dev);
279 int err = 0, num_rx_pools, i, limit;
280 u8 num_tc;
281
282 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
283 err = ixgbe_disable_sriov(adapter);
284 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
285 return num_vfs;
286
287 if (err)
288 return err;
289
290 /* While the SR-IOV capability structure reports total VFs to be 64,
291 * we limit the actual number allocated as below based on two factors.
292 * Num_TCs MAX_VFs
293 * 1 63
294 * <=4 31
295 * >4 15
296 * First, we reserve some transmit/receive resources for the PF.
297 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
298 * account for this, so that we don't accidentally allocate more VFs
299 * than we have available pools. The PCI bus driver already checks for
300 * other values out of range.
301 */
302 num_tc = adapter->hw_tcs;
303 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
304 adapter->num_rx_pools);
305 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
306 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
307
308 if (num_vfs > (limit - num_rx_pools)) {
309 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
310 num_tc, num_rx_pools - 1, limit - num_rx_pools);
311 return -EPERM;
312 }
313
314 err = __ixgbe_enable_sriov(adapter, num_vfs);
315 if (err)
316 return err;
317
318 for (i = 0; i < num_vfs; i++)
319 ixgbe_vf_configuration(dev, (i | 0x10000000));
320
321 /* reset before enabling SRIOV to avoid mailbox issues */
322 ixgbe_sriov_reinit(adapter);
323
324 err = pci_enable_sriov(dev, num_vfs);
325 if (err) {
326 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
327 return err;
328 }
329 ixgbe_get_vfs(adapter);
330
331 return num_vfs;
332 #else
333 return 0;
334 #endif
335 }
336
ixgbe_pci_sriov_disable(struct pci_dev * dev)337 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
338 {
339 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
340 int err;
341 #ifdef CONFIG_PCI_IOV
342 u32 current_flags = adapter->flags;
343 int prev_num_vf = pci_num_vf(dev);
344 #endif
345
346 err = ixgbe_disable_sriov(adapter);
347
348 /* Only reinit if no error and state changed */
349 #ifdef CONFIG_PCI_IOV
350 if (!err && (current_flags != adapter->flags ||
351 prev_num_vf != pci_num_vf(dev)))
352 ixgbe_sriov_reinit(adapter);
353 #endif
354
355 return err;
356 }
357
ixgbe_pci_sriov_configure(struct pci_dev * dev,int num_vfs)358 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
359 {
360 if (num_vfs == 0)
361 return ixgbe_pci_sriov_disable(dev);
362 else
363 return ixgbe_pci_sriov_enable(dev, num_vfs);
364 }
365
ixgbe_set_vf_multicasts(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)366 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
367 u32 *msgbuf, u32 vf)
368 {
369 int entries = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
370 u16 *hash_list = (u16 *)&msgbuf[1];
371 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
372 struct ixgbe_hw *hw = &adapter->hw;
373 int i;
374 u32 vector_bit;
375 u32 vector_reg;
376 u32 mta_reg;
377 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
378
379 /* only so many hash values supported */
380 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
381
382 /*
383 * salt away the number of multi cast addresses assigned
384 * to this VF for later use to restore when the PF multi cast
385 * list changes
386 */
387 vfinfo->num_vf_mc_hashes = entries;
388
389 /*
390 * VFs are limited to using the MTA hash table for their multicast
391 * addresses
392 */
393 for (i = 0; i < entries; i++) {
394 vfinfo->vf_mc_hashes[i] = hash_list[i];
395 }
396
397 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
398 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
399 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
400 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
401 mta_reg |= BIT(vector_bit);
402 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
403 }
404 vmolr |= IXGBE_VMOLR_ROMPE;
405 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
406
407 return 0;
408 }
409
410 #ifdef CONFIG_PCI_IOV
ixgbe_restore_vf_multicasts(struct ixgbe_adapter * adapter)411 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
412 {
413 struct ixgbe_hw *hw = &adapter->hw;
414 struct vf_data_storage *vfinfo;
415 int i, j;
416 u32 vector_bit;
417 u32 vector_reg;
418 u32 mta_reg;
419
420 for (i = 0; i < adapter->num_vfs; i++) {
421 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
422 vfinfo = &adapter->vfinfo[i];
423 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
424 hw->addr_ctrl.mta_in_use++;
425 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
426 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
427 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
428 mta_reg |= BIT(vector_bit);
429 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
430 }
431
432 if (vfinfo->num_vf_mc_hashes)
433 vmolr |= IXGBE_VMOLR_ROMPE;
434 else
435 vmolr &= ~IXGBE_VMOLR_ROMPE;
436 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
437 }
438
439 /* Restore any VF macvlans */
440 ixgbe_full_sync_mac_table(adapter);
441 }
442 #endif
443
ixgbe_set_vf_vlan(struct ixgbe_adapter * adapter,int add,int vid,u32 vf)444 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
445 u32 vf)
446 {
447 struct ixgbe_hw *hw = &adapter->hw;
448 int err;
449
450 /* If VLAN overlaps with one the PF is currently monitoring make
451 * sure that we are able to allocate a VLVF entry. This may be
452 * redundant but it guarantees PF will maintain visibility to
453 * the VLAN.
454 */
455 if (add && test_bit(vid, adapter->active_vlans)) {
456 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
457 if (err)
458 return err;
459 }
460
461 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
462
463 if (add && !err)
464 return err;
465
466 /* If we failed to add the VF VLAN or we are removing the VF VLAN
467 * we may need to drop the PF pool bit in order to allow us to free
468 * up the VLVF resources.
469 */
470 if (test_bit(vid, adapter->active_vlans) ||
471 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
472 ixgbe_update_pf_promisc_vlvf(adapter, vid);
473
474 return err;
475 }
476
ixgbe_set_vf_lpe(struct ixgbe_adapter * adapter,u32 max_frame,u32 vf)477 static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)
478 {
479 struct ixgbe_hw *hw = &adapter->hw;
480 u32 max_frs;
481
482 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
483 e_err(drv, "VF max_frame %d out of range\n", max_frame);
484 return -EINVAL;
485 }
486
487 /*
488 * For 82599EB we have to keep all PFs and VFs operating with
489 * the same max_frame value in order to avoid sending an oversize
490 * frame to a VF. In order to guarantee this is handled correctly
491 * for all cases we have several special exceptions to take into
492 * account before we can enable the VF for receive
493 */
494 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
495 struct net_device *dev = adapter->netdev;
496 int pf_max_frame = dev->mtu + ETH_HLEN;
497 u32 reg_offset, vf_shift, vfre;
498 int err = 0;
499
500 #ifdef CONFIG_FCOE
501 if (dev->fcoe_mtu)
502 pf_max_frame = max_t(int, pf_max_frame,
503 IXGBE_FCOE_JUMBO_FRAME_SIZE);
504
505 #endif /* CONFIG_FCOE */
506 switch (adapter->vfinfo[vf].vf_api) {
507 case ixgbe_mbox_api_11:
508 case ixgbe_mbox_api_12:
509 case ixgbe_mbox_api_13:
510 case ixgbe_mbox_api_14:
511 case ixgbe_mbox_api_16:
512 case ixgbe_mbox_api_17:
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 case ixgbe_mbox_api_16:
1050 case ixgbe_mbox_api_17:
1051 adapter->vfinfo[vf].vf_api = api;
1052 return 0;
1053 default:
1054 break;
1055 }
1056
1057 e_dbg(drv, "VF %d requested unsupported api version %u\n", vf, api);
1058
1059 return -1;
1060 }
1061
ixgbe_get_vf_queues(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1062 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1063 u32 *msgbuf, u32 vf)
1064 {
1065 struct net_device *dev = adapter->netdev;
1066 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1067 unsigned int default_tc = 0;
1068 u8 num_tcs = adapter->hw_tcs;
1069
1070 /* verify the PF is supporting the correct APIs */
1071 switch (adapter->vfinfo[vf].vf_api) {
1072 case ixgbe_mbox_api_20:
1073 case ixgbe_mbox_api_11:
1074 case ixgbe_mbox_api_12:
1075 case ixgbe_mbox_api_13:
1076 case ixgbe_mbox_api_14:
1077 case ixgbe_mbox_api_16:
1078 case ixgbe_mbox_api_17:
1079 break;
1080 default:
1081 return -1;
1082 }
1083
1084 /* only allow 1 Tx queue for bandwidth limiting */
1085 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1086 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1087
1088 /* if TCs > 1 determine which TC belongs to default user priority */
1089 if (num_tcs > 1)
1090 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1091
1092 /* notify VF of need for VLAN tag stripping, and correct queue */
1093 if (num_tcs)
1094 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1095 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1096 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1097 else
1098 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1099
1100 /* notify VF of default queue */
1101 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1102
1103 return 0;
1104 }
1105
ixgbe_get_vf_reta(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1106 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1107 {
1108 u32 i, j;
1109 u32 *out_buf = &msgbuf[1];
1110 const u8 *reta = adapter->rss_indir_tbl;
1111 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1112
1113 /* Check if operation is permitted */
1114 if (!adapter->vfinfo[vf].rss_query_enabled)
1115 return -EPERM;
1116
1117 /* verify the PF is supporting the correct API */
1118 switch (adapter->vfinfo[vf].vf_api) {
1119 case ixgbe_mbox_api_17:
1120 case ixgbe_mbox_api_16:
1121 case ixgbe_mbox_api_14:
1122 case ixgbe_mbox_api_13:
1123 case ixgbe_mbox_api_12:
1124 break;
1125 default:
1126 return -EOPNOTSUPP;
1127 }
1128
1129 /* This mailbox command is supported (required) only for 82599 and x540
1130 * VFs which support up to 4 RSS queues. Therefore we will compress the
1131 * RETA by saving only 2 bits from each entry. This way we will be able
1132 * to transfer the whole RETA in a single mailbox operation.
1133 */
1134 for (i = 0; i < reta_size / 16; i++) {
1135 out_buf[i] = 0;
1136 for (j = 0; j < 16; j++)
1137 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1138 }
1139
1140 return 0;
1141 }
1142
ixgbe_get_vf_rss_key(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1143 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1144 u32 *msgbuf, u32 vf)
1145 {
1146 u32 *rss_key = &msgbuf[1];
1147
1148 /* Check if the operation is permitted */
1149 if (!adapter->vfinfo[vf].rss_query_enabled)
1150 return -EPERM;
1151
1152 /* verify the PF is supporting the correct API */
1153 switch (adapter->vfinfo[vf].vf_api) {
1154 case ixgbe_mbox_api_17:
1155 case ixgbe_mbox_api_16:
1156 case ixgbe_mbox_api_14:
1157 case ixgbe_mbox_api_13:
1158 case ixgbe_mbox_api_12:
1159 break;
1160 default:
1161 return -EOPNOTSUPP;
1162 }
1163
1164 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1165
1166 return 0;
1167 }
1168
ixgbe_update_vf_xcast_mode(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1169 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1170 u32 *msgbuf, u32 vf)
1171 {
1172 struct ixgbe_hw *hw = &adapter->hw;
1173 int xcast_mode = msgbuf[1];
1174 u32 vmolr, fctrl, disable, enable;
1175
1176 /* verify the PF is supporting the correct APIs */
1177 switch (adapter->vfinfo[vf].vf_api) {
1178 case ixgbe_mbox_api_12:
1179 /* promisc introduced in 1.3 version */
1180 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1181 return -EOPNOTSUPP;
1182 fallthrough;
1183 case ixgbe_mbox_api_13:
1184 case ixgbe_mbox_api_14:
1185 case ixgbe_mbox_api_16:
1186 case ixgbe_mbox_api_17:
1187 break;
1188 default:
1189 return -EOPNOTSUPP;
1190 }
1191
1192 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1193 !adapter->vfinfo[vf].trusted) {
1194 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1195 }
1196
1197 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1198 goto out;
1199
1200 switch (xcast_mode) {
1201 case IXGBEVF_XCAST_MODE_NONE:
1202 disable = IXGBE_VMOLR_ROMPE |
1203 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1204 enable = IXGBE_VMOLR_BAM;
1205 break;
1206 case IXGBEVF_XCAST_MODE_MULTI:
1207 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1208 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1209 break;
1210 case IXGBEVF_XCAST_MODE_ALLMULTI:
1211 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1212 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1213 break;
1214 case IXGBEVF_XCAST_MODE_PROMISC:
1215 if (hw->mac.type <= ixgbe_mac_82599EB)
1216 return -EOPNOTSUPP;
1217
1218 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1219 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1220 /* VF promisc requires PF in promisc */
1221 e_warn(drv,
1222 "Enabling VF promisc requires PF in promisc\n");
1223 return -EPERM;
1224 }
1225
1226 disable = IXGBE_VMOLR_VPE;
1227 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1228 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;
1229 break;
1230 default:
1231 return -EOPNOTSUPP;
1232 }
1233
1234 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1235 vmolr &= ~disable;
1236 vmolr |= enable;
1237 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1238
1239 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1240
1241 out:
1242 msgbuf[1] = xcast_mode;
1243
1244 return 0;
1245 }
1246
ixgbe_get_vf_link_state(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1247 static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
1248 u32 *msgbuf, u32 vf)
1249 {
1250 u32 *link_state = &msgbuf[1];
1251
1252 /* verify the PF is supporting the correct API */
1253 switch (adapter->vfinfo[vf].vf_api) {
1254 case ixgbe_mbox_api_12:
1255 case ixgbe_mbox_api_13:
1256 case ixgbe_mbox_api_14:
1257 case ixgbe_mbox_api_16:
1258 case ixgbe_mbox_api_17:
1259 break;
1260 default:
1261 return -EOPNOTSUPP;
1262 }
1263
1264 *link_state = adapter->vfinfo[vf].link_enable;
1265
1266 return 0;
1267 }
1268
1269 /**
1270 * ixgbe_send_vf_link_status - send link status data to VF
1271 * @adapter: pointer to adapter struct
1272 * @msgbuf: pointer to message buffers
1273 * @vf: VF identifier
1274 *
1275 * Reply for IXGBE_VF_GET_PF_LINK_STATE mbox command sending link status data.
1276 *
1277 * Return: 0 on success or -EOPNOTSUPP when operation is not supported.
1278 */
ixgbe_send_vf_link_status(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1279 static int ixgbe_send_vf_link_status(struct ixgbe_adapter *adapter,
1280 u32 *msgbuf, u32 vf)
1281 {
1282 struct ixgbe_hw *hw = &adapter->hw;
1283
1284 switch (adapter->vfinfo[vf].vf_api) {
1285 case ixgbe_mbox_api_16:
1286 case ixgbe_mbox_api_17:
1287 if (hw->mac.type != ixgbe_mac_e610)
1288 return -EOPNOTSUPP;
1289 break;
1290 default:
1291 return -EOPNOTSUPP;
1292 }
1293 /* Simply provide stored values as watchdog & link status events take
1294 * care of its freshness.
1295 */
1296 msgbuf[1] = adapter->link_speed;
1297 msgbuf[2] = adapter->link_up;
1298
1299 return 0;
1300 }
1301
1302 /**
1303 * ixgbe_negotiate_vf_features - negotiate supported features with VF driver
1304 * @adapter: pointer to adapter struct
1305 * @msgbuf: pointer to message buffers
1306 * @vf: VF identifier
1307 *
1308 * Return: 0 on success or -EOPNOTSUPP when operation is not supported.
1309 */
ixgbe_negotiate_vf_features(struct ixgbe_adapter * adapter,u32 * msgbuf,u32 vf)1310 static int ixgbe_negotiate_vf_features(struct ixgbe_adapter *adapter,
1311 u32 *msgbuf, u32 vf)
1312 {
1313 u32 features = msgbuf[1];
1314
1315 switch (adapter->vfinfo[vf].vf_api) {
1316 case ixgbe_mbox_api_17:
1317 break;
1318 default:
1319 return -EOPNOTSUPP;
1320 }
1321
1322 features &= IXGBE_SUPPORTED_FEATURES;
1323 msgbuf[1] = features;
1324
1325 return 0;
1326 }
1327
ixgbe_rcv_msg_from_vf(struct ixgbe_adapter * adapter,u32 vf)1328 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1329 {
1330 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1331 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1332 struct ixgbe_hw *hw = &adapter->hw;
1333 int retval;
1334
1335 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1336
1337 if (retval) {
1338 pr_err("Error receiving message from VF\n");
1339 return retval;
1340 }
1341
1342 /* this is a message we already processed, do nothing */
1343 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1344 return 0;
1345
1346 /* flush the ack before we write any messages back */
1347 IXGBE_WRITE_FLUSH(hw);
1348
1349 if (msgbuf[0] == IXGBE_VF_RESET)
1350 return ixgbe_vf_reset_msg(adapter, vf);
1351
1352 /*
1353 * until the vf completes a virtual function reset it should not be
1354 * allowed to start any configuration.
1355 */
1356 if (!adapter->vfinfo[vf].clear_to_send) {
1357 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1358 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1359 return 0;
1360 }
1361
1362 switch ((msgbuf[0] & 0xFFFF)) {
1363 case IXGBE_VF_SET_MAC_ADDR:
1364 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1365 break;
1366 case IXGBE_VF_SET_MULTICAST:
1367 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1368 break;
1369 case IXGBE_VF_SET_VLAN:
1370 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1371 break;
1372 case IXGBE_VF_SET_LPE:
1373 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1374 break;
1375 case IXGBE_VF_SET_MACVLAN:
1376 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1377 break;
1378 case IXGBE_VF_API_NEGOTIATE:
1379 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1380 break;
1381 case IXGBE_VF_GET_QUEUES:
1382 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1383 break;
1384 case IXGBE_VF_GET_RETA:
1385 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1386 break;
1387 case IXGBE_VF_GET_RSS_KEY:
1388 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1389 break;
1390 case IXGBE_VF_UPDATE_XCAST_MODE:
1391 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1392 break;
1393 case IXGBE_VF_GET_LINK_STATE:
1394 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);
1395 break;
1396 case IXGBE_VF_IPSEC_ADD:
1397 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1398 break;
1399 case IXGBE_VF_IPSEC_DEL:
1400 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1401 break;
1402 case IXGBE_VF_GET_PF_LINK_STATE:
1403 retval = ixgbe_send_vf_link_status(adapter, msgbuf, vf);
1404 break;
1405 case IXGBE_VF_FEATURES_NEGOTIATE:
1406 retval = ixgbe_negotiate_vf_features(adapter, msgbuf, vf);
1407 break;
1408 default:
1409 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1410 retval = -EIO;
1411 break;
1412 }
1413
1414 /* notify the VF of the results of what it sent us */
1415 if (retval)
1416 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1417 else
1418 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1419
1420 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1421
1422 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1423
1424 return retval;
1425 }
1426
ixgbe_rcv_ack_from_vf(struct ixgbe_adapter * adapter,u32 vf)1427 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1428 {
1429 struct ixgbe_hw *hw = &adapter->hw;
1430 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1431
1432 /* if device isn't clear to send it shouldn't be reading either */
1433 if (!adapter->vfinfo[vf].clear_to_send)
1434 ixgbe_write_mbx(hw, &msg, 1, vf);
1435 }
1436
1437 /**
1438 * ixgbe_check_mdd_event - check for MDD event on all VFs
1439 * @adapter: pointer to ixgbe adapter
1440 *
1441 * Return: true if there is a VF on which MDD event occurred, false otherwise.
1442 */
ixgbe_check_mdd_event(struct ixgbe_adapter * adapter)1443 bool ixgbe_check_mdd_event(struct ixgbe_adapter *adapter)
1444 {
1445 struct ixgbe_hw *hw = &adapter->hw;
1446 DECLARE_BITMAP(vf_bitmap, 64);
1447 bool ret = false;
1448 int i;
1449
1450 if (!hw->mac.ops.handle_mdd)
1451 return false;
1452
1453 /* Did we have a malicious event */
1454 bitmap_zero(vf_bitmap, 64);
1455 hw->mac.ops.handle_mdd(hw, vf_bitmap);
1456
1457 /* Log any blocked queues and release lock */
1458 for_each_set_bit(i, vf_bitmap, 64) {
1459 dev_warn(&adapter->pdev->dev,
1460 "Malicious event on VF %d tx:%x rx:%x\n", i,
1461 IXGBE_READ_REG(hw, IXGBE_LVMMC_TX),
1462 IXGBE_READ_REG(hw, IXGBE_LVMMC_RX));
1463
1464 if (hw->mac.ops.restore_mdd_vf) {
1465 u32 ping;
1466
1467 hw->mac.ops.restore_mdd_vf(hw, i);
1468
1469 /* get the VF to rebuild its queues */
1470 adapter->vfinfo[i].clear_to_send = 0;
1471 ping = IXGBE_PF_CONTROL_MSG |
1472 IXGBE_VT_MSGTYPE_CTS;
1473 ixgbe_write_mbx(hw, &ping, 1, i);
1474 }
1475
1476 ret = true;
1477 }
1478
1479 return ret;
1480 }
1481
ixgbe_msg_task(struct ixgbe_adapter * adapter)1482 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1483 {
1484 struct ixgbe_hw *hw = &adapter->hw;
1485 unsigned long flags;
1486 u32 vf;
1487
1488 ixgbe_check_mdd_event(adapter);
1489
1490 spin_lock_irqsave(&adapter->vfs_lock, flags);
1491 for (vf = 0; vf < adapter->num_vfs; vf++) {
1492 /* process any reset requests */
1493 if (!ixgbe_check_for_rst(hw, vf))
1494 ixgbe_vf_reset_event(adapter, vf);
1495
1496 /* process any messages pending */
1497 if (!ixgbe_check_for_msg(hw, vf))
1498 ixgbe_rcv_msg_from_vf(adapter, vf);
1499
1500 /* process any acks */
1501 if (!ixgbe_check_for_ack(hw, vf))
1502 ixgbe_rcv_ack_from_vf(adapter, vf);
1503 }
1504 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
1505 }
1506
ixgbe_ping_vf(struct ixgbe_adapter * adapter,int vf)1507 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1508 {
1509 struct ixgbe_hw *hw = &adapter->hw;
1510 u32 ping;
1511
1512 ping = IXGBE_PF_CONTROL_MSG;
1513 if (adapter->vfinfo[vf].clear_to_send)
1514 ping |= IXGBE_VT_MSGTYPE_CTS;
1515 ixgbe_write_mbx(hw, &ping, 1, vf);
1516 }
1517
ixgbe_ping_all_vfs(struct ixgbe_adapter * adapter)1518 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1519 {
1520 struct ixgbe_hw *hw = &adapter->hw;
1521 u32 ping;
1522 int i;
1523
1524 for (i = 0 ; i < adapter->num_vfs; i++) {
1525 ping = IXGBE_PF_CONTROL_MSG;
1526 if (adapter->vfinfo[i].clear_to_send)
1527 ping |= IXGBE_VT_MSGTYPE_CTS;
1528 ixgbe_write_mbx(hw, &ping, 1, i);
1529 }
1530 }
1531
1532 /**
1533 * ixgbe_set_all_vfs - update vfs queues
1534 * @adapter: Pointer to adapter struct
1535 *
1536 * Update setting transmit and receive queues for all vfs
1537 **/
ixgbe_set_all_vfs(struct ixgbe_adapter * adapter)1538 void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)
1539 {
1540 int i;
1541
1542 for (i = 0 ; i < adapter->num_vfs; i++)
1543 ixgbe_set_vf_link_state(adapter, i,
1544 adapter->vfinfo[i].link_state);
1545 }
1546
ixgbe_ndo_set_vf_mac(struct net_device * netdev,int vf,u8 * mac)1547 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1548 {
1549 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1550 int retval;
1551
1552 if (vf >= adapter->num_vfs)
1553 return -EINVAL;
1554
1555 if (is_valid_ether_addr(mac)) {
1556 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1557 mac, vf);
1558 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1559
1560 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1561 if (retval >= 0) {
1562 adapter->vfinfo[vf].pf_set_mac = true;
1563
1564 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1565 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1566 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1567 }
1568 } else {
1569 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1570 }
1571 } else if (is_zero_ether_addr(mac)) {
1572 unsigned char *vf_mac_addr =
1573 adapter->vfinfo[vf].vf_mac_addresses;
1574
1575 /* nothing to do */
1576 if (is_zero_ether_addr(vf_mac_addr))
1577 return 0;
1578
1579 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1580
1581 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1582 if (retval >= 0) {
1583 adapter->vfinfo[vf].pf_set_mac = false;
1584 memcpy(vf_mac_addr, mac, ETH_ALEN);
1585 } else {
1586 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1587 }
1588 } else {
1589 retval = -EINVAL;
1590 }
1591
1592 return retval;
1593 }
1594
ixgbe_enable_port_vlan(struct ixgbe_adapter * adapter,int vf,u16 vlan,u8 qos)1595 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1596 u16 vlan, u8 qos)
1597 {
1598 struct ixgbe_hw *hw = &adapter->hw;
1599 int err;
1600
1601 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1602 if (err)
1603 goto out;
1604
1605 /* Revoke tagless access via VLAN 0 */
1606 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1607
1608 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1609 ixgbe_set_vmolr(hw, vf, false);
1610
1611 /* enable hide vlan on X550 */
1612 if (hw->mac.type >= ixgbe_mac_X550)
1613 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1614 IXGBE_QDE_HIDE_VLAN);
1615
1616 adapter->vfinfo[vf].pf_vlan = vlan;
1617 adapter->vfinfo[vf].pf_qos = qos;
1618 dev_info(&adapter->pdev->dev,
1619 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1620 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1621 dev_warn(&adapter->pdev->dev,
1622 "The VF VLAN has been set, but the PF device is not up.\n");
1623 dev_warn(&adapter->pdev->dev,
1624 "Bring the PF device up before attempting to use the VF device.\n");
1625 }
1626
1627 out:
1628 return err;
1629 }
1630
ixgbe_disable_port_vlan(struct ixgbe_adapter * adapter,int vf)1631 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1632 {
1633 struct ixgbe_hw *hw = &adapter->hw;
1634 int err;
1635
1636 err = ixgbe_set_vf_vlan(adapter, false,
1637 adapter->vfinfo[vf].pf_vlan, vf);
1638 /* Restore tagless access via VLAN 0 */
1639 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1640 ixgbe_clear_vmvir(adapter, vf);
1641 ixgbe_set_vmolr(hw, vf, true);
1642
1643 /* disable hide VLAN on X550 */
1644 if (hw->mac.type >= ixgbe_mac_X550)
1645 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1646
1647 adapter->vfinfo[vf].pf_vlan = 0;
1648 adapter->vfinfo[vf].pf_qos = 0;
1649
1650 return err;
1651 }
1652
ixgbe_ndo_set_vf_vlan(struct net_device * netdev,int vf,u16 vlan,u8 qos,__be16 vlan_proto)1653 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1654 u8 qos, __be16 vlan_proto)
1655 {
1656 int err = 0;
1657 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1658
1659 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1660 return -EINVAL;
1661 if (vlan_proto != htons(ETH_P_8021Q))
1662 return -EPROTONOSUPPORT;
1663 if (vlan || qos) {
1664 /* Check if there is already a port VLAN set, if so
1665 * we have to delete the old one first before we
1666 * can set the new one. The usage model had
1667 * previously assumed the user would delete the
1668 * old port VLAN before setting a new one but this
1669 * is not necessarily the case.
1670 */
1671 if (adapter->vfinfo[vf].pf_vlan)
1672 err = ixgbe_disable_port_vlan(adapter, vf);
1673 if (err)
1674 goto out;
1675 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1676 } else {
1677 err = ixgbe_disable_port_vlan(adapter, vf);
1678 }
1679
1680 out:
1681 return err;
1682 }
1683
ixgbe_link_mbps(struct ixgbe_adapter * adapter)1684 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1685 {
1686 switch (adapter->link_speed) {
1687 case IXGBE_LINK_SPEED_100_FULL:
1688 return 100;
1689 case IXGBE_LINK_SPEED_1GB_FULL:
1690 return 1000;
1691 case IXGBE_LINK_SPEED_10GB_FULL:
1692 return 10000;
1693 default:
1694 return 0;
1695 }
1696 }
1697
ixgbe_set_vf_rate_limit(struct ixgbe_adapter * adapter,int vf)1698 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1699 {
1700 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1701 struct ixgbe_hw *hw = &adapter->hw;
1702 u32 bcnrc_val = 0;
1703 u16 queue, queues_per_pool;
1704 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1705
1706 if (tx_rate) {
1707 /* start with base link speed value */
1708 bcnrc_val = adapter->vf_rate_link_speed;
1709
1710 /* Calculate the rate factor values to set */
1711 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1712 bcnrc_val /= tx_rate;
1713
1714 /* clear everything but the rate factor */
1715 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1716 IXGBE_RTTBCNRC_RF_DEC_MASK;
1717
1718 /* enable the rate scheduler */
1719 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1720 }
1721
1722 /*
1723 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1724 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1725 * and 0x004 otherwise.
1726 */
1727 switch (hw->mac.type) {
1728 case ixgbe_mac_82599EB:
1729 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1730 break;
1731 case ixgbe_mac_X540:
1732 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1733 break;
1734 default:
1735 break;
1736 }
1737
1738 /* determine how many queues per pool based on VMDq mask */
1739 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1740
1741 /* write value for all Tx queues belonging to VF */
1742 for (queue = 0; queue < queues_per_pool; queue++) {
1743 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1744
1745 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1746 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1747 }
1748 }
1749
ixgbe_check_vf_rate_limit(struct ixgbe_adapter * adapter)1750 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1751 {
1752 int i;
1753
1754 /* VF Tx rate limit was not set */
1755 if (!adapter->vf_rate_link_speed)
1756 return;
1757
1758 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1759 adapter->vf_rate_link_speed = 0;
1760 dev_info(&adapter->pdev->dev,
1761 "Link speed has been changed. VF Transmit rate is disabled\n");
1762 }
1763
1764 for (i = 0; i < adapter->num_vfs; i++) {
1765 if (!adapter->vf_rate_link_speed)
1766 adapter->vfinfo[i].tx_rate = 0;
1767
1768 ixgbe_set_vf_rate_limit(adapter, i);
1769 }
1770 }
1771
ixgbe_ndo_set_vf_bw(struct net_device * netdev,int vf,int min_tx_rate,int max_tx_rate)1772 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1773 int max_tx_rate)
1774 {
1775 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1776 int link_speed;
1777
1778 /* verify VF is active */
1779 if (vf >= adapter->num_vfs)
1780 return -EINVAL;
1781
1782 /* verify link is up */
1783 if (!adapter->link_up)
1784 return -EINVAL;
1785
1786 /* verify we are linked at 10Gbps */
1787 link_speed = ixgbe_link_mbps(adapter);
1788 if (link_speed != 10000)
1789 return -EINVAL;
1790
1791 if (min_tx_rate)
1792 return -EINVAL;
1793
1794 /* rate limit cannot be less than 10Mbs or greater than link speed */
1795 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1796 return -EINVAL;
1797
1798 /* store values */
1799 adapter->vf_rate_link_speed = link_speed;
1800 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1801
1802 /* update hardware configuration */
1803 ixgbe_set_vf_rate_limit(adapter, vf);
1804
1805 return 0;
1806 }
1807
ixgbe_ndo_set_vf_spoofchk(struct net_device * netdev,int vf,bool setting)1808 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1809 {
1810 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1811 struct ixgbe_hw *hw = &adapter->hw;
1812
1813 if (vf >= adapter->num_vfs)
1814 return -EINVAL;
1815
1816 adapter->vfinfo[vf].spoofchk_enabled = setting;
1817
1818 /* configure MAC spoofing */
1819 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1820
1821 /* configure VLAN spoofing */
1822 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1823
1824 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1825 * calling set_ethertype_anti_spoofing for each VF in loop below
1826 */
1827 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1828 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1829 (IXGBE_ETQF_FILTER_EN |
1830 IXGBE_ETQF_TX_ANTISPOOF |
1831 ETH_P_LLDP));
1832
1833 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1834 (IXGBE_ETQF_FILTER_EN |
1835 IXGBE_ETQF_TX_ANTISPOOF |
1836 ETH_P_PAUSE));
1837
1838 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1839 }
1840
1841 return 0;
1842 }
1843
1844 /**
1845 * ixgbe_set_vf_link_state - Set link state
1846 * @adapter: Pointer to adapter struct
1847 * @vf: VF identifier
1848 * @state: required link state
1849 *
1850 * Set a link force state on/off a single vf
1851 **/
ixgbe_set_vf_link_state(struct ixgbe_adapter * adapter,int vf,int state)1852 void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)
1853 {
1854 adapter->vfinfo[vf].link_state = state;
1855
1856 switch (state) {
1857 case IFLA_VF_LINK_STATE_AUTO:
1858 if (test_bit(__IXGBE_DOWN, &adapter->state))
1859 adapter->vfinfo[vf].link_enable = false;
1860 else
1861 adapter->vfinfo[vf].link_enable = true;
1862 break;
1863 case IFLA_VF_LINK_STATE_ENABLE:
1864 adapter->vfinfo[vf].link_enable = true;
1865 break;
1866 case IFLA_VF_LINK_STATE_DISABLE:
1867 adapter->vfinfo[vf].link_enable = false;
1868 break;
1869 }
1870
1871 ixgbe_set_vf_rx_tx(adapter, vf);
1872
1873 /* restart the VF */
1874 adapter->vfinfo[vf].clear_to_send = false;
1875 ixgbe_ping_vf(adapter, vf);
1876 }
1877
1878 /**
1879 * ixgbe_ndo_set_vf_link_state - Set link state
1880 * @netdev: network interface device structure
1881 * @vf: VF identifier
1882 * @state: required link state
1883 *
1884 * Set the link state of a specified VF, regardless of physical link state
1885 **/
ixgbe_ndo_set_vf_link_state(struct net_device * netdev,int vf,int state)1886 int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)
1887 {
1888 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1889 int ret = 0;
1890
1891 if (vf < 0 || vf >= adapter->num_vfs) {
1892 dev_err(&adapter->pdev->dev,
1893 "NDO set VF link - invalid VF identifier %d\n", vf);
1894 return -EINVAL;
1895 }
1896
1897 switch (state) {
1898 case IFLA_VF_LINK_STATE_ENABLE:
1899 dev_info(&adapter->pdev->dev,
1900 "NDO set VF %d link state %d - not supported\n",
1901 vf, state);
1902 break;
1903 case IFLA_VF_LINK_STATE_DISABLE:
1904 dev_info(&adapter->pdev->dev,
1905 "NDO set VF %d link state disable\n", vf);
1906 ixgbe_set_vf_link_state(adapter, vf, state);
1907 break;
1908 case IFLA_VF_LINK_STATE_AUTO:
1909 dev_info(&adapter->pdev->dev,
1910 "NDO set VF %d link state auto\n", vf);
1911 ixgbe_set_vf_link_state(adapter, vf, state);
1912 break;
1913 default:
1914 dev_err(&adapter->pdev->dev,
1915 "NDO set VF %d - invalid link state %d\n", vf, state);
1916 ret = -EINVAL;
1917 }
1918
1919 return ret;
1920 }
1921
ixgbe_ndo_set_vf_rss_query_en(struct net_device * netdev,int vf,bool setting)1922 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1923 bool setting)
1924 {
1925 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1926
1927 /* This operation is currently supported only for 82599 and x540
1928 * devices.
1929 */
1930 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1931 adapter->hw.mac.type >= ixgbe_mac_X550)
1932 return -EOPNOTSUPP;
1933
1934 if (vf >= adapter->num_vfs)
1935 return -EINVAL;
1936
1937 adapter->vfinfo[vf].rss_query_enabled = setting;
1938
1939 return 0;
1940 }
1941
ixgbe_ndo_set_vf_trust(struct net_device * netdev,int vf,bool setting)1942 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1943 {
1944 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1945
1946 if (vf >= adapter->num_vfs)
1947 return -EINVAL;
1948
1949 /* nothing to do */
1950 if (adapter->vfinfo[vf].trusted == setting)
1951 return 0;
1952
1953 adapter->vfinfo[vf].trusted = setting;
1954
1955 /* reset VF to reconfigure features */
1956 adapter->vfinfo[vf].clear_to_send = false;
1957 ixgbe_ping_vf(adapter, vf);
1958
1959 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1960
1961 return 0;
1962 }
1963
ixgbe_ndo_get_vf_config(struct net_device * netdev,int vf,struct ifla_vf_info * ivi)1964 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1965 int vf, struct ifla_vf_info *ivi)
1966 {
1967 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev);
1968 if (vf >= adapter->num_vfs)
1969 return -EINVAL;
1970 ivi->vf = vf;
1971 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1972 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1973 ivi->min_tx_rate = 0;
1974 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1975 ivi->qos = adapter->vfinfo[vf].pf_qos;
1976 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1977 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1978 ivi->trusted = adapter->vfinfo[vf].trusted;
1979 ivi->linkstate = adapter->vfinfo[vf].link_state;
1980 return 0;
1981 }
1982