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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
blob537dfff585e0dfa719201202d5cafa1364a474c4
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_sriov.h"
22
23 #ifdef CONFIG_PCI_IOV
24 static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,
25 unsigned int num_vfs)
26 {
27 struct ixgbe_hw *hw = &adapter->hw;
28 struct vf_macvlans *mv_list;
29 int num_vf_macvlans, i;
30
31 num_vf_macvlans = hw->mac.num_rar_entries -
32 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
33 if (!num_vf_macvlans)
34 return;
35
36 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
37 GFP_KERNEL);
38 if (mv_list) {
39 /* Initialize list of VF macvlans */
40 INIT_LIST_HEAD(&adapter->vf_mvs.l);
41 for (i = 0; i < num_vf_macvlans; i++) {
42 mv_list[i].vf = -1;
43 mv_list[i].free = true;
44 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
45 }
46 adapter->mv_list = mv_list;
47 }
48 }
49
50 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
51 unsigned int num_vfs)
52 {
53 struct ixgbe_hw *hw = &adapter->hw;
54 int i;
55
56 if (adapter->xdp_prog) {
57 e_warn(probe, "SRIOV is not supported with XDP\n");
58 return -EINVAL;
59 }
60
61 /* Enable VMDq flag so device will be set in VM mode */
62 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
63 IXGBE_FLAG_VMDQ_ENABLED;
64
65 /* Allocate memory for per VF control structures */
66 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
67 GFP_KERNEL);
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 trafffic 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
100 /* We support VF RSS querying only for 82599 and x540
101 * devices at the moment. These devices share RSS
102 * indirection table and RSS hash key with PF therefore
103 * we want to disable the querying by default.
104 */
105 adapter->vfinfo[i].rss_query_enabled = 0;
106
107 /* Untrust all VFs */
108 adapter->vfinfo[i].trusted = false;
109
110 /* set the default xcast mode */
111 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
112 }
113
114 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
115 return 0;
116 }
117
118 /**
119 * ixgbe_get_vfs - Find and take references to all vf devices
120 * @adapter: Pointer to adapter struct
121 */
122 static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
123 {
124 struct pci_dev *pdev = adapter->pdev;
125 u16 vendor = pdev->vendor;
126 struct pci_dev *vfdev;
127 int vf = 0;
128 u16 vf_id;
129 int pos;
130
131 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
132 if (!pos)
133 return;
134 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
135
136 vfdev = pci_get_device(vendor, vf_id, NULL);
137 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
138 if (!vfdev->is_virtfn)
139 continue;
140 if (vfdev->physfn != pdev)
141 continue;
142 if (vf >= adapter->num_vfs)
143 continue;
144 pci_dev_get(vfdev);
145 adapter->vfinfo[vf].vfdev = vfdev;
146 ++vf;
147 }
148 }
149
150 /* Note this function is called when the user wants to enable SR-IOV
151 * VFs using the now deprecated module parameter
152 */
153 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
154 {
155 int pre_existing_vfs = 0;
156 unsigned int num_vfs;
157
158 pre_existing_vfs = pci_num_vf(adapter->pdev);
159 if (!pre_existing_vfs && !max_vfs)
160 return;
161
162 /* If there are pre-existing VFs then we have to force
163 * use of that many - over ride any module parameter value.
164 * This may result from the user unloading the PF driver
165 * while VFs were assigned to guest VMs or because the VFs
166 * have been created via the new PCI SR-IOV sysfs interface.
167 */
168 if (pre_existing_vfs) {
169 num_vfs = pre_existing_vfs;
170 dev_warn(&adapter->pdev->dev,
171 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
172 } else {
173 int err;
174 /*
175 * The 82599 supports up to 64 VFs per physical function
176 * but this implementation limits allocation to 63 so that
177 * basic networking resources are still available to the
178 * physical function. If the user requests greater than
179 * 63 VFs then it is an error - reset to default of zero.
180 */
181 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
182
183 err = pci_enable_sriov(adapter->pdev, num_vfs);
184 if (err) {
185 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
186 return;
187 }
188 }
189
190 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
191 ixgbe_get_vfs(adapter);
192 return;
193 }
194
195 /* If we have gotten to this point then there is no memory available
196 * to manage the VF devices - print message and bail.
197 */
198 e_err(probe, "Unable to allocate memory for VF Data Storage - "
199 "SRIOV disabled\n");
200 ixgbe_disable_sriov(adapter);
201 }
202
203 #endif /* #ifdef CONFIG_PCI_IOV */
204 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
205 {
206 unsigned int num_vfs = adapter->num_vfs, vf;
207 int rss;
208
209 /* set num VFs to 0 to prevent access to vfinfo */
210 adapter->num_vfs = 0;
211
212 /* put the reference to all of the vf devices */
213 for (vf = 0; vf < num_vfs; ++vf) {
214 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
215
216 if (!vfdev)
217 continue;
218 adapter->vfinfo[vf].vfdev = NULL;
219 pci_dev_put(vfdev);
220 }
221
222 /* free VF control structures */
223 kfree(adapter->vfinfo);
224 adapter->vfinfo = NULL;
225
226 /* free macvlan list */
227 kfree(adapter->mv_list);
228 adapter->mv_list = NULL;
229
230 /* if SR-IOV is already disabled then there is nothing to do */
231 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
232 return 0;
233
234 #ifdef CONFIG_PCI_IOV
235 /*
236 * If our VFs are assigned we cannot shut down SR-IOV
237 * without causing issues, so just leave the hardware
238 * available but disabled
239 */
240 if (pci_vfs_assigned(adapter->pdev)) {
241 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
242 return -EPERM;
243 }
244 /* disable iov and allow time for transactions to clear */
245 pci_disable_sriov(adapter->pdev);
246 #endif
247
248 /* Disable VMDq flag so device will be set in VM mode */
249 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
250 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
251 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
252 rss = min_t(int, ixgbe_max_rss_indices(adapter),
253 num_online_cpus());
254 } else {
255 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
256 }
257
258 adapter->ring_feature[RING_F_VMDQ].offset = 0;
259 adapter->ring_feature[RING_F_RSS].limit = rss;
260
261 /* take a breather then clean up driver data */
262 msleep(100);
263 return 0;
264 }
265
266 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
267 {
268 #ifdef CONFIG_PCI_IOV
269 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
270 int pre_existing_vfs = pci_num_vf(dev);
271 int err = 0, num_rx_pools, i, limit;
272 u8 num_tc;
273
274 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
275 err = ixgbe_disable_sriov(adapter);
276 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
277 return num_vfs;
278
279 if (err)
280 return err;
281
282 /* While the SR-IOV capability structure reports total VFs to be 64,
283 * we limit the actual number allocated as below based on two factors.
284 * Num_TCs MAX_VFs
285 * 1 63
286 * <=4 31
287 * >4 15
288 * First, we reserve some transmit/receive resources for the PF.
289 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
290 * account for this, so that we don't accidentally allocate more VFs
291 * than we have available pools. The PCI bus driver already checks for
292 * other values out of range.
293 */
294 num_tc = adapter->hw_tcs;
295 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
296 adapter->num_rx_pools);
297 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
298 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
299
300 if (num_vfs > (limit - num_rx_pools)) {
301 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
302 num_tc, num_rx_pools - 1, limit - num_rx_pools);
303 return -EPERM;
304 }
305
306 err = __ixgbe_enable_sriov(adapter, num_vfs);
307 if (err)
308 return err;
309
310 for (i = 0; i < num_vfs; i++)
311 ixgbe_vf_configuration(dev, (i | 0x10000000));
312
313 /* reset before enabling SRIOV to avoid mailbox issues */
314 ixgbe_sriov_reinit(adapter);
315
316 err = pci_enable_sriov(dev, num_vfs);
317 if (err) {
318 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
319 return err;
320 }
321 ixgbe_get_vfs(adapter);
322
323 return num_vfs;
324 #else
325 return 0;
326 #endif
327 }
328
329 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
330 {
331 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
332 int err;
333 #ifdef CONFIG_PCI_IOV
334 u32 current_flags = adapter->flags;
335 int prev_num_vf = pci_num_vf(dev);
336 #endif
337
338 err = ixgbe_disable_sriov(adapter);
339
340 /* Only reinit if no error and state changed */
341 #ifdef CONFIG_PCI_IOV
342 if (!err && (current_flags != adapter->flags ||
343 prev_num_vf != pci_num_vf(dev)))
344 ixgbe_sriov_reinit(adapter);
345 #endif
346
347 return err;
348 }
349
350 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
351 {
352 if (num_vfs == 0)
353 return ixgbe_pci_sriov_disable(dev);
354 else
355 return ixgbe_pci_sriov_enable(dev, num_vfs);
356 }
357
358 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
359 u32 *msgbuf, u32 vf)
360 {
361 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
362 >> IXGBE_VT_MSGINFO_SHIFT;
363 u16 *hash_list = (u16 *)&msgbuf[1];
364 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
365 struct ixgbe_hw *hw = &adapter->hw;
366 int i;
367 u32 vector_bit;
368 u32 vector_reg;
369 u32 mta_reg;
370 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
371
372 /* only so many hash values supported */
373 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
374
375 /*
376 * salt away the number of multi cast addresses assigned
377 * to this VF for later use to restore when the PF multi cast
378 * list changes
379 */
380 vfinfo->num_vf_mc_hashes = entries;
381
382 /*
383 * VFs are limited to using the MTA hash table for their multicast
384 * addresses
385 */
386 for (i = 0; i < entries; i++) {
387 vfinfo->vf_mc_hashes[i] = hash_list[i];
388 }
389
390 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
391 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
392 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
393 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
394 mta_reg |= BIT(vector_bit);
395 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
396 }
397 vmolr |= IXGBE_VMOLR_ROMPE;
398 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
399
400 return 0;
401 }
402
403 #ifdef CONFIG_PCI_IOV
404 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
405 {
406 struct ixgbe_hw *hw = &adapter->hw;
407 struct vf_data_storage *vfinfo;
408 int i, j;
409 u32 vector_bit;
410 u32 vector_reg;
411 u32 mta_reg;
412
413 for (i = 0; i < adapter->num_vfs; i++) {
414 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
415 vfinfo = &adapter->vfinfo[i];
416 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
417 hw->addr_ctrl.mta_in_use++;
418 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
419 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
420 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
421 mta_reg |= BIT(vector_bit);
422 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
423 }
424
425 if (vfinfo->num_vf_mc_hashes)
426 vmolr |= IXGBE_VMOLR_ROMPE;
427 else
428 vmolr &= ~IXGBE_VMOLR_ROMPE;
429 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
430 }
431
432 /* Restore any VF macvlans */
433 ixgbe_full_sync_mac_table(adapter);
434 }
435 #endif
436
437 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
438 u32 vf)
439 {
440 struct ixgbe_hw *hw = &adapter->hw;
441 int err;
442
443 /* If VLAN overlaps with one the PF is currently monitoring make
444 * sure that we are able to allocate a VLVF entry. This may be
445 * redundant but it guarantees PF will maintain visibility to
446 * the VLAN.
447 */
448 if (add && test_bit(vid, adapter->active_vlans)) {
449 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
450 if (err)
451 return err;
452 }
453
454 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
455
456 if (add && !err)
457 return err;
458
459 /* If we failed to add the VF VLAN or we are removing the VF VLAN
460 * we may need to drop the PF pool bit in order to allow us to free
461 * up the VLVF resources.
462 */
463 if (test_bit(vid, adapter->active_vlans) ||
464 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
465 ixgbe_update_pf_promisc_vlvf(adapter, vid);
466
467 return err;
468 }
469
470 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
471 {
472 struct ixgbe_hw *hw = &adapter->hw;
473 int max_frame = msgbuf[1];
474 u32 max_frs;
475
476 /*
477 * For 82599EB we have to keep all PFs and VFs operating with
478 * the same max_frame value in order to avoid sending an oversize
479 * frame to a VF. In order to guarantee this is handled correctly
480 * for all cases we have several special exceptions to take into
481 * account before we can enable the VF for receive
482 */
483 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
484 struct net_device *dev = adapter->netdev;
485 int pf_max_frame = dev->mtu + ETH_HLEN;
486 u32 reg_offset, vf_shift, vfre;
487 s32 err = 0;
488
489 #ifdef CONFIG_FCOE
490 if (dev->features & NETIF_F_FCOE_MTU)
491 pf_max_frame = max_t(int, pf_max_frame,
492 IXGBE_FCOE_JUMBO_FRAME_SIZE);
493
494 #endif /* CONFIG_FCOE */
495 switch (adapter->vfinfo[vf].vf_api) {
496 case ixgbe_mbox_api_11:
497 case ixgbe_mbox_api_12:
498 case ixgbe_mbox_api_13:
499 case ixgbe_mbox_api_14:
500 /* Version 1.1 supports jumbo frames on VFs if PF has
501 * jumbo frames enabled which means legacy VFs are
502 * disabled
503 */
504 if (pf_max_frame > ETH_FRAME_LEN)
505 break;
506 /* fall through */
507 default:
508 /* If the PF or VF are running w/ jumbo frames enabled
509 * we need to shut down the VF Rx path as we cannot
510 * support jumbo frames on legacy VFs
511 */
512 if ((pf_max_frame > ETH_FRAME_LEN) ||
513 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
514 err = -EINVAL;
515 break;
516 }
517
518 /* determine VF receive enable location */
519 vf_shift = vf % 32;
520 reg_offset = vf / 32;
521
522 /* enable or disable receive depending on error */
523 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
524 if (err)
525 vfre &= ~BIT(vf_shift);
526 else
527 vfre |= BIT(vf_shift);
528 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
529
530 if (err) {
531 e_err(drv, "VF max_frame %d out of range\n", max_frame);
532 return err;
533 }
534 }
535
536 /* MTU < 68 is an error and causes problems on some kernels */
537 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
538 e_err(drv, "VF max_frame %d out of range\n", max_frame);
539 return -EINVAL;
540 }
541
542 /* pull current max frame size from hardware */
543 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
544 max_frs &= IXGBE_MHADD_MFS_MASK;
545 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
546
547 if (max_frs < max_frame) {
548 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
549 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
550 }
551
552 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
553
554 return 0;
555 }
556
557 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
558 {
559 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
560 vmolr |= IXGBE_VMOLR_BAM;
561 if (aupe)
562 vmolr |= IXGBE_VMOLR_AUPE;
563 else
564 vmolr &= ~IXGBE_VMOLR_AUPE;
565 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
566 }
567
568 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
569 {
570 struct ixgbe_hw *hw = &adapter->hw;
571
572 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
573 }
574
575 static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
576 {
577 struct ixgbe_hw *hw = &adapter->hw;
578 u32 vlvfb_mask, pool_mask, i;
579
580 /* create mask for VF and other pools */
581 pool_mask = ~BIT(VMDQ_P(0) % 32);
582 vlvfb_mask = BIT(vf % 32);
583
584 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
585 for (i = IXGBE_VLVF_ENTRIES; i--;) {
586 u32 bits[2], vlvfb, vid, vfta, vlvf;
587 u32 word = i * 2 + vf / 32;
588 u32 mask;
589
590 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
591
592 /* if our bit isn't set we can skip it */
593 if (!(vlvfb & vlvfb_mask))
594 continue;
595
596 /* clear our bit from vlvfb */
597 vlvfb ^= vlvfb_mask;
598
599 /* create 64b mask to chedk to see if we should clear VLVF */
600 bits[word % 2] = vlvfb;
601 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
602
603 /* if other pools are present, just remove ourselves */
604 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
605 (bits[VMDQ_P(0) / 32] & pool_mask))
606 goto update_vlvfb;
607
608 /* if PF is present, leave VFTA */
609 if (bits[0] || bits[1])
610 goto update_vlvf;
611
612 /* if we cannot determine VLAN just remove ourselves */
613 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
614 if (!vlvf)
615 goto update_vlvfb;
616
617 vid = vlvf & VLAN_VID_MASK;
618 mask = BIT(vid % 32);
619
620 /* clear bit from VFTA */
621 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
622 if (vfta & mask)
623 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
624 update_vlvf:
625 /* clear POOL selection enable */
626 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
627
628 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
629 vlvfb = 0;
630 update_vlvfb:
631 /* clear pool bits */
632 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
633 }
634 }
635
636 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
637 int vf, int index, unsigned char *mac_addr)
638 {
639 struct vf_macvlans *entry;
640 struct list_head *pos;
641 int retval = 0;
642
643 if (index <= 1) {
644 list_for_each(pos, &adapter->vf_mvs.l) {
645 entry = list_entry(pos, struct vf_macvlans, l);
646 if (entry->vf == vf) {
647 entry->vf = -1;
648 entry->free = true;
649 entry->is_macvlan = false;
650 ixgbe_del_mac_filter(adapter,
651 entry->vf_macvlan, vf);
652 }
653 }
654 }
655
656 /*
657 * If index was zero then we were asked to clear the uc list
658 * for the VF. We're done.
659 */
660 if (!index)
661 return 0;
662
663 entry = NULL;
664
665 list_for_each(pos, &adapter->vf_mvs.l) {
666 entry = list_entry(pos, struct vf_macvlans, l);
667 if (entry->free)
668 break;
669 }
670
671 /*
672 * If we traversed the entire list and didn't find a free entry
673 * then we're out of space on the RAR table. Also entry may
674 * be NULL because the original memory allocation for the list
675 * failed, which is not fatal but does mean we can't support
676 * VF requests for MACVLAN because we couldn't allocate
677 * memory for the list management required.
678 */
679 if (!entry || !entry->free)
680 return -ENOSPC;
681
682 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
683 if (retval < 0)
684 return retval;
685
686 entry->free = false;
687 entry->is_macvlan = true;
688 entry->vf = vf;
689 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
690
691 return 0;
692 }
693
694 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
695 {
696 struct ixgbe_hw *hw = &adapter->hw;
697 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
698 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
699 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
700 u8 num_tcs = adapter->hw_tcs;
701 u32 reg_val;
702 u32 queue;
703
704 /* remove VLAN filters beloning to this VF */
705 ixgbe_clear_vf_vlans(adapter, vf);
706
707 /* add back PF assigned VLAN or VLAN 0 */
708 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
709
710 /* reset offloads to defaults */
711 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
712
713 /* set outgoing tags for VFs */
714 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
715 ixgbe_clear_vmvir(adapter, vf);
716 } else {
717 if (vfinfo->pf_qos || !num_tcs)
718 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
719 vfinfo->pf_qos, vf);
720 else
721 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
722 adapter->default_up, vf);
723
724 if (vfinfo->spoofchk_enabled) {
725 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
726 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
727 }
728 }
729
730 /* reset multicast table array for vf */
731 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
732
733 /* clear any ipsec table info */
734 ixgbe_ipsec_vf_clear(adapter, vf);
735
736 /* Flush and reset the mta with the new values */
737 ixgbe_set_rx_mode(adapter->netdev);
738
739 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
740 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
741
742 /* reset VF api back to unknown */
743 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
744
745 /* Restart each queue for given VF */
746 for (queue = 0; queue < q_per_pool; queue++) {
747 unsigned int reg_idx = (vf * q_per_pool) + queue;
748
749 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
750
751 /* Re-enabling only configured queues */
752 if (reg_val) {
753 reg_val |= IXGBE_TXDCTL_ENABLE;
754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
755 reg_val &= ~IXGBE_TXDCTL_ENABLE;
756 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
757 }
758 }
759
760 IXGBE_WRITE_FLUSH(hw);
761 }
762
763 static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
764 {
765 struct ixgbe_hw *hw = &adapter->hw;
766 u32 word;
767
768 /* Clear VF's mailbox memory */
769 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
770 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
771
772 IXGBE_WRITE_FLUSH(hw);
773 }
774
775 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
776 int vf, unsigned char *mac_addr)
777 {
778 s32 retval;
779
780 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
781 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
782 if (retval >= 0)
783 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
784 ETH_ALEN);
785 else
786 memset(adapter->vfinfo[vf].vf_mac_addresses, 0, ETH_ALEN);
787
788 return retval;
789 }
790
791 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
792 {
793 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
794 unsigned int vfn = (event_mask & 0x3f);
795
796 bool enable = ((event_mask & 0x10000000U) != 0);
797
798 if (enable)
799 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
800
801 return 0;
802 }
803
804 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
805 u32 qde)
806 {
807 struct ixgbe_hw *hw = &adapter->hw;
808 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
809 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
810 int i;
811
812 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
813 u32 reg;
814
815 /* flush previous write */
816 IXGBE_WRITE_FLUSH(hw);
817
818 /* indicate to hardware that we want to set drop enable */
819 reg = IXGBE_QDE_WRITE | qde;
820 reg |= i << IXGBE_QDE_IDX_SHIFT;
821 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
822 }
823 }
824
825 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
826 {
827 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
828 struct ixgbe_hw *hw = &adapter->hw;
829 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
830 u32 reg, reg_offset, vf_shift;
831 u32 msgbuf[4] = {0, 0, 0, 0};
832 u8 *addr = (u8 *)(&msgbuf[1]);
833 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
834 int i;
835
836 e_info(probe, "VF Reset msg received from vf %d\n", vf);
837
838 /* reset the filters for the device */
839 ixgbe_vf_reset_event(adapter, vf);
840
841 ixgbe_vf_clear_mbx(adapter, vf);
842
843 /* set vf mac address */
844 if (!is_zero_ether_addr(vf_mac))
845 ixgbe_set_vf_mac(adapter, vf, vf_mac);
846
847 vf_shift = vf % 32;
848 reg_offset = vf / 32;
849
850 /* enable transmit for vf */
851 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
852 reg |= BIT(vf_shift);
853 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
854
855 /* force drop enable for all VF Rx queues */
856 reg = IXGBE_QDE_ENABLE;
857 if (adapter->vfinfo[vf].pf_vlan)
858 reg |= IXGBE_QDE_HIDE_VLAN;
859
860 ixgbe_write_qde(adapter, vf, reg);
861
862 /* enable receive for vf */
863 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
864 reg |= BIT(vf_shift);
865 /*
866 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
867 * For more info take a look at ixgbe_set_vf_lpe
868 */
869 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
870 struct net_device *dev = adapter->netdev;
871 int pf_max_frame = dev->mtu + ETH_HLEN;
872
873 #ifdef CONFIG_FCOE
874 if (dev->features & NETIF_F_FCOE_MTU)
875 pf_max_frame = max_t(int, pf_max_frame,
876 IXGBE_FCOE_JUMBO_FRAME_SIZE);
877
878 #endif /* CONFIG_FCOE */
879 if (pf_max_frame > ETH_FRAME_LEN)
880 reg &= ~BIT(vf_shift);
881 }
882 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
883
884 /* enable VF mailbox for further messages */
885 adapter->vfinfo[vf].clear_to_send = true;
886
887 /* Enable counting of spoofed packets in the SSVPC register */
888 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
889 reg |= BIT(vf_shift);
890 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
891
892 /*
893 * Reset the VFs TDWBAL and TDWBAH registers
894 * which are not cleared by an FLR
895 */
896 for (i = 0; i < q_per_pool; i++) {
897 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
898 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
899 }
900
901 /* reply to reset with ack and vf mac address */
902 msgbuf[0] = IXGBE_VF_RESET;
903 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
904 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
905 memcpy(addr, vf_mac, ETH_ALEN);
906 } else {
907 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
908 }
909
910 /*
911 * Piggyback the multicast filter type so VF can compute the
912 * correct vectors
913 */
914 msgbuf[3] = hw->mac.mc_filter_type;
915 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
916
917 return 0;
918 }
919
920 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
921 u32 *msgbuf, u32 vf)
922 {
923 u8 *new_mac = ((u8 *)(&msgbuf[1]));
924
925 if (!is_valid_ether_addr(new_mac)) {
926 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
927 return -1;
928 }
929
930 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
931 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
932 e_warn(drv,
933 "VF %d attempted to override administratively set MAC address\n"
934 "Reload the VF driver to resume operations\n",
935 vf);
936 return -1;
937 }
938
939 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
940 }
941
942 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
943 u32 *msgbuf, u32 vf)
944 {
945 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
946 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
947 u8 tcs = adapter->hw_tcs;
948
949 if (adapter->vfinfo[vf].pf_vlan || tcs) {
950 e_warn(drv,
951 "VF %d attempted to override administratively set VLAN configuration\n"
952 "Reload the VF driver to resume operations\n",
953 vf);
954 return -1;
955 }
956
957 /* VLAN 0 is a special case, don't allow it to be removed */
958 if (!vid && !add)
959 return 0;
960
961 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
962 }
963
964 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
965 u32 *msgbuf, u32 vf)
966 {
967 u8 *new_mac = ((u8 *)(&msgbuf[1]));
968 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
969 IXGBE_VT_MSGINFO_SHIFT;
970 int err;
971
972 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
973 index > 0) {
974 e_warn(drv,
975 "VF %d requested MACVLAN filter but is administratively denied\n",
976 vf);
977 return -1;
978 }
979
980 /* An non-zero index indicates the VF is setting a filter */
981 if (index) {
982 if (!is_valid_ether_addr(new_mac)) {
983 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
984 return -1;
985 }
986
987 /*
988 * If the VF is allowed to set MAC filters then turn off
989 * anti-spoofing to avoid false positives.
990 */
991 if (adapter->vfinfo[vf].spoofchk_enabled) {
992 struct ixgbe_hw *hw = &adapter->hw;
993
994 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
995 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
996 }
997 }
998
999 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
1000 if (err == -ENOSPC)
1001 e_warn(drv,
1002 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1003 vf);
1004
1005 return err < 0;
1006 }
1007
1008 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1009 u32 *msgbuf, u32 vf)
1010 {
1011 int api = msgbuf[1];
1012
1013 switch (api) {
1014 case ixgbe_mbox_api_10:
1015 case ixgbe_mbox_api_11:
1016 case ixgbe_mbox_api_12:
1017 case ixgbe_mbox_api_13:
1018 case ixgbe_mbox_api_14:
1019 adapter->vfinfo[vf].vf_api = api;
1020 return 0;
1021 default:
1022 break;
1023 }
1024
1025 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1026
1027 return -1;
1028 }
1029
1030 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1031 u32 *msgbuf, u32 vf)
1032 {
1033 struct net_device *dev = adapter->netdev;
1034 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1035 unsigned int default_tc = 0;
1036 u8 num_tcs = adapter->hw_tcs;
1037
1038 /* verify the PF is supporting the correct APIs */
1039 switch (adapter->vfinfo[vf].vf_api) {
1040 case ixgbe_mbox_api_20:
1041 case ixgbe_mbox_api_11:
1042 case ixgbe_mbox_api_12:
1043 case ixgbe_mbox_api_13:
1044 case ixgbe_mbox_api_14:
1045 break;
1046 default:
1047 return -1;
1048 }
1049
1050 /* only allow 1 Tx queue for bandwidth limiting */
1051 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1052 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1053
1054 /* if TCs > 1 determine which TC belongs to default user priority */
1055 if (num_tcs > 1)
1056 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1057
1058 /* notify VF of need for VLAN tag stripping, and correct queue */
1059 if (num_tcs)
1060 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1061 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1062 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1063 else
1064 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1065
1066 /* notify VF of default queue */
1067 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1068
1069 return 0;
1070 }
1071
1072 static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1073 {
1074 u32 i, j;
1075 u32 *out_buf = &msgbuf[1];
1076 const u8 *reta = adapter->rss_indir_tbl;
1077 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1078
1079 /* Check if operation is permitted */
1080 if (!adapter->vfinfo[vf].rss_query_enabled)
1081 return -EPERM;
1082
1083 /* verify the PF is supporting the correct API */
1084 switch (adapter->vfinfo[vf].vf_api) {
1085 case ixgbe_mbox_api_14:
1086 case ixgbe_mbox_api_13:
1087 case ixgbe_mbox_api_12:
1088 break;
1089 default:
1090 return -EOPNOTSUPP;
1091 }
1092
1093 /* This mailbox command is supported (required) only for 82599 and x540
1094 * VFs which support up to 4 RSS queues. Therefore we will compress the
1095 * RETA by saving only 2 bits from each entry. This way we will be able
1096 * to transfer the whole RETA in a single mailbox operation.
1097 */
1098 for (i = 0; i < reta_size / 16; i++) {
1099 out_buf[i] = 0;
1100 for (j = 0; j < 16; j++)
1101 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1102 }
1103
1104 return 0;
1105 }
1106
1107 static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1108 u32 *msgbuf, u32 vf)
1109 {
1110 u32 *rss_key = &msgbuf[1];
1111
1112 /* Check if the operation is permitted */
1113 if (!adapter->vfinfo[vf].rss_query_enabled)
1114 return -EPERM;
1115
1116 /* verify the PF is supporting the correct API */
1117 switch (adapter->vfinfo[vf].vf_api) {
1118 case ixgbe_mbox_api_14:
1119 case ixgbe_mbox_api_13:
1120 case ixgbe_mbox_api_12:
1121 break;
1122 default:
1123 return -EOPNOTSUPP;
1124 }
1125
1126 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1127
1128 return 0;
1129 }
1130
1131 static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1132 u32 *msgbuf, u32 vf)
1133 {
1134 struct ixgbe_hw *hw = &adapter->hw;
1135 int xcast_mode = msgbuf[1];
1136 u32 vmolr, fctrl, disable, enable;
1137
1138 /* verify the PF is supporting the correct APIs */
1139 switch (adapter->vfinfo[vf].vf_api) {
1140 case ixgbe_mbox_api_12:
1141 /* promisc introduced in 1.3 version */
1142 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1143 return -EOPNOTSUPP;
1144 /* Fall through */
1145 case ixgbe_mbox_api_13:
1146 case ixgbe_mbox_api_14:
1147 break;
1148 default:
1149 return -EOPNOTSUPP;
1150 }
1151
1152 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1153 !adapter->vfinfo[vf].trusted) {
1154 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1155 }
1156
1157 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1158 goto out;
1159
1160 switch (xcast_mode) {
1161 case IXGBEVF_XCAST_MODE_NONE:
1162 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1163 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1164 enable = 0;
1165 break;
1166 case IXGBEVF_XCAST_MODE_MULTI:
1167 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1168 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1169 break;
1170 case IXGBEVF_XCAST_MODE_ALLMULTI:
1171 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1172 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1173 break;
1174 case IXGBEVF_XCAST_MODE_PROMISC:
1175 if (hw->mac.type <= ixgbe_mac_82599EB)
1176 return -EOPNOTSUPP;
1177
1178 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1179 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1180 /* VF promisc requires PF in promisc */
1181 e_warn(drv,
1182 "Enabling VF promisc requires PF in promisc\n");
1183 return -EPERM;
1184 }
1185
1186 disable = 0;
1187 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1188 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1189 break;
1190 default:
1191 return -EOPNOTSUPP;
1192 }
1193
1194 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1195 vmolr &= ~disable;
1196 vmolr |= enable;
1197 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1198
1199 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1200
1201 out:
1202 msgbuf[1] = xcast_mode;
1203
1204 return 0;
1205 }
1206
1207 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1208 {
1209 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1210 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1211 struct ixgbe_hw *hw = &adapter->hw;
1212 s32 retval;
1213
1214 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1215
1216 if (retval) {
1217 pr_err("Error receiving message from VF\n");
1218 return retval;
1219 }
1220
1221 /* this is a message we already processed, do nothing */
1222 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1223 return 0;
1224
1225 /* flush the ack before we write any messages back */
1226 IXGBE_WRITE_FLUSH(hw);
1227
1228 if (msgbuf[0] == IXGBE_VF_RESET)
1229 return ixgbe_vf_reset_msg(adapter, vf);
1230
1231 /*
1232 * until the vf completes a virtual function reset it should not be
1233 * allowed to start any configuration.
1234 */
1235 if (!adapter->vfinfo[vf].clear_to_send) {
1236 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1237 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1238 return 0;
1239 }
1240
1241 switch ((msgbuf[0] & 0xFFFF)) {
1242 case IXGBE_VF_SET_MAC_ADDR:
1243 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1244 break;
1245 case IXGBE_VF_SET_MULTICAST:
1246 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1247 break;
1248 case IXGBE_VF_SET_VLAN:
1249 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1250 break;
1251 case IXGBE_VF_SET_LPE:
1252 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1253 break;
1254 case IXGBE_VF_SET_MACVLAN:
1255 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1256 break;
1257 case IXGBE_VF_API_NEGOTIATE:
1258 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1259 break;
1260 case IXGBE_VF_GET_QUEUES:
1261 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1262 break;
1263 case IXGBE_VF_GET_RETA:
1264 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1265 break;
1266 case IXGBE_VF_GET_RSS_KEY:
1267 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1268 break;
1269 case IXGBE_VF_UPDATE_XCAST_MODE:
1270 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1271 break;
1272 case IXGBE_VF_IPSEC_ADD:
1273 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1274 break;
1275 case IXGBE_VF_IPSEC_DEL:
1276 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1277 break;
1278 default:
1279 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1280 retval = IXGBE_ERR_MBX;
1281 break;
1282 }
1283
1284 /* notify the VF of the results of what it sent us */
1285 if (retval)
1286 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1287 else
1288 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1289
1290 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1291
1292 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1293
1294 return retval;
1295 }
1296
1297 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1298 {
1299 struct ixgbe_hw *hw = &adapter->hw;
1300 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1301
1302 /* if device isn't clear to send it shouldn't be reading either */
1303 if (!adapter->vfinfo[vf].clear_to_send)
1304 ixgbe_write_mbx(hw, &msg, 1, vf);
1305 }
1306
1307 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1308 {
1309 struct ixgbe_hw *hw = &adapter->hw;
1310 u32 vf;
1311
1312 for (vf = 0; vf < adapter->num_vfs; vf++) {
1313 /* process any reset requests */
1314 if (!ixgbe_check_for_rst(hw, vf))
1315 ixgbe_vf_reset_event(adapter, vf);
1316
1317 /* process any messages pending */
1318 if (!ixgbe_check_for_msg(hw, vf))
1319 ixgbe_rcv_msg_from_vf(adapter, vf);
1320
1321 /* process any acks */
1322 if (!ixgbe_check_for_ack(hw, vf))
1323 ixgbe_rcv_ack_from_vf(adapter, vf);
1324 }
1325 }
1326
1327 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1328 {
1329 struct ixgbe_hw *hw = &adapter->hw;
1330
1331 /* disable transmit and receive for all vfs */
1332 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1333 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1334
1335 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1336 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1337 }
1338
1339 static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1340 {
1341 struct ixgbe_hw *hw = &adapter->hw;
1342 u32 ping;
1343
1344 ping = IXGBE_PF_CONTROL_MSG;
1345 if (adapter->vfinfo[vf].clear_to_send)
1346 ping |= IXGBE_VT_MSGTYPE_CTS;
1347 ixgbe_write_mbx(hw, &ping, 1, vf);
1348 }
1349
1350 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1351 {
1352 struct ixgbe_hw *hw = &adapter->hw;
1353 u32 ping;
1354 int i;
1355
1356 for (i = 0 ; i < adapter->num_vfs; i++) {
1357 ping = IXGBE_PF_CONTROL_MSG;
1358 if (adapter->vfinfo[i].clear_to_send)
1359 ping |= IXGBE_VT_MSGTYPE_CTS;
1360 ixgbe_write_mbx(hw, &ping, 1, i);
1361 }
1362 }
1363
1364 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1365 {
1366 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1367 s32 retval;
1368
1369 if (vf >= adapter->num_vfs)
1370 return -EINVAL;
1371
1372 if (is_valid_ether_addr(mac)) {
1373 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1374 mac, vf);
1375 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1376
1377 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1378 if (retval >= 0) {
1379 adapter->vfinfo[vf].pf_set_mac = true;
1380
1381 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1382 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1383 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1384 }
1385 } else {
1386 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1387 }
1388 } else if (is_zero_ether_addr(mac)) {
1389 unsigned char *vf_mac_addr =
1390 adapter->vfinfo[vf].vf_mac_addresses;
1391
1392 /* nothing to do */
1393 if (is_zero_ether_addr(vf_mac_addr))
1394 return 0;
1395
1396 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1397
1398 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1399 if (retval >= 0) {
1400 adapter->vfinfo[vf].pf_set_mac = false;
1401 memcpy(vf_mac_addr, mac, ETH_ALEN);
1402 } else {
1403 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1404 }
1405 } else {
1406 retval = -EINVAL;
1407 }
1408
1409 return retval;
1410 }
1411
1412 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1413 u16 vlan, u8 qos)
1414 {
1415 struct ixgbe_hw *hw = &adapter->hw;
1416 int err;
1417
1418 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1419 if (err)
1420 goto out;
1421
1422 /* Revoke tagless access via VLAN 0 */
1423 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1424
1425 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1426 ixgbe_set_vmolr(hw, vf, false);
1427
1428 /* enable hide vlan on X550 */
1429 if (hw->mac.type >= ixgbe_mac_X550)
1430 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1431 IXGBE_QDE_HIDE_VLAN);
1432
1433 adapter->vfinfo[vf].pf_vlan = vlan;
1434 adapter->vfinfo[vf].pf_qos = qos;
1435 dev_info(&adapter->pdev->dev,
1436 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1437 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1438 dev_warn(&adapter->pdev->dev,
1439 "The VF VLAN has been set, but the PF device is not up.\n");
1440 dev_warn(&adapter->pdev->dev,
1441 "Bring the PF device up before attempting to use the VF device.\n");
1442 }
1443
1444 out:
1445 return err;
1446 }
1447
1448 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1449 {
1450 struct ixgbe_hw *hw = &adapter->hw;
1451 int err;
1452
1453 err = ixgbe_set_vf_vlan(adapter, false,
1454 adapter->vfinfo[vf].pf_vlan, vf);
1455 /* Restore tagless access via VLAN 0 */
1456 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1457 ixgbe_clear_vmvir(adapter, vf);
1458 ixgbe_set_vmolr(hw, vf, true);
1459
1460 /* disable hide VLAN on X550 */
1461 if (hw->mac.type >= ixgbe_mac_X550)
1462 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1463
1464 adapter->vfinfo[vf].pf_vlan = 0;
1465 adapter->vfinfo[vf].pf_qos = 0;
1466
1467 return err;
1468 }
1469
1470 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1471 u8 qos, __be16 vlan_proto)
1472 {
1473 int err = 0;
1474 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1475
1476 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1477 return -EINVAL;
1478 if (vlan_proto != htons(ETH_P_8021Q))
1479 return -EPROTONOSUPPORT;
1480 if (vlan || qos) {
1481 /* Check if there is already a port VLAN set, if so
1482 * we have to delete the old one first before we
1483 * can set the new one. The usage model had
1484 * previously assumed the user would delete the
1485 * old port VLAN before setting a new one but this
1486 * is not necessarily the case.
1487 */
1488 if (adapter->vfinfo[vf].pf_vlan)
1489 err = ixgbe_disable_port_vlan(adapter, vf);
1490 if (err)
1491 goto out;
1492 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1493 } else {
1494 err = ixgbe_disable_port_vlan(adapter, vf);
1495 }
1496
1497 out:
1498 return err;
1499 }
1500
1501 int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1502 {
1503 switch (adapter->link_speed) {
1504 case IXGBE_LINK_SPEED_100_FULL:
1505 return 100;
1506 case IXGBE_LINK_SPEED_1GB_FULL:
1507 return 1000;
1508 case IXGBE_LINK_SPEED_10GB_FULL:
1509 return 10000;
1510 default:
1511 return 0;
1512 }
1513 }
1514
1515 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1516 {
1517 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1518 struct ixgbe_hw *hw = &adapter->hw;
1519 u32 bcnrc_val = 0;
1520 u16 queue, queues_per_pool;
1521 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1522
1523 if (tx_rate) {
1524 /* start with base link speed value */
1525 bcnrc_val = adapter->vf_rate_link_speed;
1526
1527 /* Calculate the rate factor values to set */
1528 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1529 bcnrc_val /= tx_rate;
1530
1531 /* clear everything but the rate factor */
1532 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1533 IXGBE_RTTBCNRC_RF_DEC_MASK;
1534
1535 /* enable the rate scheduler */
1536 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1537 }
1538
1539 /*
1540 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1541 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1542 * and 0x004 otherwise.
1543 */
1544 switch (hw->mac.type) {
1545 case ixgbe_mac_82599EB:
1546 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1547 break;
1548 case ixgbe_mac_X540:
1549 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1550 break;
1551 default:
1552 break;
1553 }
1554
1555 /* determine how many queues per pool based on VMDq mask */
1556 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1557
1558 /* write value for all Tx queues belonging to VF */
1559 for (queue = 0; queue < queues_per_pool; queue++) {
1560 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1561
1562 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1563 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1564 }
1565 }
1566
1567 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1568 {
1569 int i;
1570
1571 /* VF Tx rate limit was not set */
1572 if (!adapter->vf_rate_link_speed)
1573 return;
1574
1575 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1576 adapter->vf_rate_link_speed = 0;
1577 dev_info(&adapter->pdev->dev,
1578 "Link speed has been changed. VF Transmit rate is disabled\n");
1579 }
1580
1581 for (i = 0; i < adapter->num_vfs; i++) {
1582 if (!adapter->vf_rate_link_speed)
1583 adapter->vfinfo[i].tx_rate = 0;
1584
1585 ixgbe_set_vf_rate_limit(adapter, i);
1586 }
1587 }
1588
1589 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1590 int max_tx_rate)
1591 {
1592 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1593 int link_speed;
1594
1595 /* verify VF is active */
1596 if (vf >= adapter->num_vfs)
1597 return -EINVAL;
1598
1599 /* verify link is up */
1600 if (!adapter->link_up)
1601 return -EINVAL;
1602
1603 /* verify we are linked at 10Gbps */
1604 link_speed = ixgbe_link_mbps(adapter);
1605 if (link_speed != 10000)
1606 return -EINVAL;
1607
1608 if (min_tx_rate)
1609 return -EINVAL;
1610
1611 /* rate limit cannot be less than 10Mbs or greater than link speed */
1612 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1613 return -EINVAL;
1614
1615 /* store values */
1616 adapter->vf_rate_link_speed = link_speed;
1617 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1618
1619 /* update hardware configuration */
1620 ixgbe_set_vf_rate_limit(adapter, vf);
1621
1622 return 0;
1623 }
1624
1625 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1626 {
1627 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1628 struct ixgbe_hw *hw = &adapter->hw;
1629
1630 if (vf >= adapter->num_vfs)
1631 return -EINVAL;
1632
1633 adapter->vfinfo[vf].spoofchk_enabled = setting;
1634
1635 /* configure MAC spoofing */
1636 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1637
1638 /* configure VLAN spoofing */
1639 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1640
1641 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1642 * calling set_ethertype_anti_spoofing for each VF in loop below
1643 */
1644 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1645 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1646 (IXGBE_ETQF_FILTER_EN |
1647 IXGBE_ETQF_TX_ANTISPOOF |
1648 ETH_P_LLDP));
1649
1650 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1651 (IXGBE_ETQF_FILTER_EN |
1652 IXGBE_ETQF_TX_ANTISPOOF |
1653 ETH_P_PAUSE));
1654
1655 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1656 }
1657
1658 return 0;
1659 }
1660
1661 int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1662 bool setting)
1663 {
1664 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1665
1666 /* This operation is currently supported only for 82599 and x540
1667 * devices.
1668 */
1669 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1670 adapter->hw.mac.type >= ixgbe_mac_X550)
1671 return -EOPNOTSUPP;
1672
1673 if (vf >= adapter->num_vfs)
1674 return -EINVAL;
1675
1676 adapter->vfinfo[vf].rss_query_enabled = setting;
1677
1678 return 0;
1679 }
1680
1681 int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1682 {
1683 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1684
1685 if (vf >= adapter->num_vfs)
1686 return -EINVAL;
1687
1688 /* nothing to do */
1689 if (adapter->vfinfo[vf].trusted == setting)
1690 return 0;
1691
1692 adapter->vfinfo[vf].trusted = setting;
1693
1694 /* reset VF to reconfigure features */
1695 adapter->vfinfo[vf].clear_to_send = false;
1696 ixgbe_ping_vf(adapter, vf);
1697
1698 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1699
1700 return 0;
1701 }
1702
1703 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1704 int vf, struct ifla_vf_info *ivi)
1705 {
1706 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1707 if (vf >= adapter->num_vfs)
1708 return -EINVAL;
1709 ivi->vf = vf;
1710 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1711 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1712 ivi->min_tx_rate = 0;
1713 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1714 ivi->qos = adapter->vfinfo[vf].pf_qos;
1715 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1716 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1717 ivi->trusted = adapter->vfinfo[vf].trusted;
1718 return 0;
1719 }
Linux with added FPC-III support