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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
25static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter,
26 unsigned int num_vfs)
27{
28 struct ixgbe_hw *hw = &adapter->hw;
29 struct vf_macvlans *mv_list;
30 int num_vf_macvlans, i;
31
32 /* Initialize list of VF macvlans */
33 INIT_LIST_HEAD(&adapter->vf_mvs.l);
34
35 num_vf_macvlans = hw->mac.num_rar_entries -
36 (IXGBE_MAX_PF_MACVLANS + 1 + num_vfs);
37 if (!num_vf_macvlans)
38 return;
39
40 mv_list = kcalloc(num_vf_macvlans, sizeof(struct vf_macvlans),
41 GFP_KERNEL);
42 if (mv_list) {
43 for (i = 0; i < num_vf_macvlans; i++) {
44 mv_list[i].vf = -1;
45 mv_list[i].free = true;
46 list_add(&mv_list[i].l, &adapter->vf_mvs.l);
47 }
48 adapter->mv_list = mv_list;
49 }
50}
51
52static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
53 unsigned int num_vfs)
54{
55 struct ixgbe_hw *hw = &adapter->hw;
56 int i;
57
58 if (adapter->xdp_prog) {
59 e_warn(probe, "SRIOV is not supported with XDP\n");
60 return -EINVAL;
61 }
62
63 /* Enable VMDq flag so device will be set in VM mode */
64 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED |
65 IXGBE_FLAG_VMDQ_ENABLED;
66
67 /* Allocate memory for per VF control structures */
68 adapter->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
69 GFP_KERNEL);
70 if (!adapter->vfinfo)
71 return -ENOMEM;
72
73 adapter->num_vfs = num_vfs;
74
75 ixgbe_alloc_vf_macvlans(adapter, num_vfs);
76 adapter->ring_feature[RING_F_VMDQ].offset = num_vfs;
77
78 /* Initialize default switching mode VEB */
79 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
80 adapter->bridge_mode = BRIDGE_MODE_VEB;
81
82 /* limit traffic classes based on VFs enabled */
83 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && (num_vfs < 16)) {
84 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
85 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
86 } else if (num_vfs < 32) {
87 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
88 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
89 } else {
90 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
91 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
92 }
93
94 /* Disable RSC when in SR-IOV mode */
95 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
96 IXGBE_FLAG2_RSC_ENABLED);
97
98 for (i = 0; i < num_vfs; i++) {
99 /* enable spoof checking for all VFs */
100 adapter->vfinfo[i].spoofchk_enabled = true;
101 adapter->vfinfo[i].link_enable = true;
102
103 /* We support VF RSS querying only for 82599 and x540
104 * devices at the moment. These devices share RSS
105 * indirection table and RSS hash key with PF therefore
106 * we want to disable the querying by default.
107 */
108 adapter->vfinfo[i].rss_query_enabled = false;
109
110 /* Untrust all VFs */
111 adapter->vfinfo[i].trusted = false;
112
113 /* set the default xcast mode */
114 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
115 }
116
117 e_info(probe, "SR-IOV enabled with %d VFs\n", num_vfs);
118 return 0;
119}
120
121/**
122 * ixgbe_get_vfs - Find and take references to all vf devices
123 * @adapter: Pointer to adapter struct
124 */
125static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
126{
127 struct pci_dev *pdev = adapter->pdev;
128 u16 vendor = pdev->vendor;
129 struct pci_dev *vfdev;
130 int vf = 0;
131 u16 vf_id;
132 int pos;
133
134 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
135 if (!pos)
136 return;
137 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
138
139 vfdev = pci_get_device(vendor, vf_id, NULL);
140 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
141 if (!vfdev->is_virtfn)
142 continue;
143 if (vfdev->physfn != pdev)
144 continue;
145 if (vf >= adapter->num_vfs)
146 continue;
147 pci_dev_get(vfdev);
148 adapter->vfinfo[vf].vfdev = vfdev;
149 ++vf;
150 }
151}
152
153/* Note this function is called when the user wants to enable SR-IOV
154 * VFs using the now deprecated module parameter
155 */
156void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, unsigned int max_vfs)
157{
158 int pre_existing_vfs = 0;
159 unsigned int num_vfs;
160
161 pre_existing_vfs = pci_num_vf(adapter->pdev);
162 if (!pre_existing_vfs && !max_vfs)
163 return;
164
165 /* If there are pre-existing VFs then we have to force
166 * use of that many - over ride any module parameter value.
167 * This may result from the user unloading the PF driver
168 * while VFs were assigned to guest VMs or because the VFs
169 * have been created via the new PCI SR-IOV sysfs interface.
170 */
171 if (pre_existing_vfs) {
172 num_vfs = pre_existing_vfs;
173 dev_warn(&adapter->pdev->dev,
174 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
175 } else {
176 int err;
177 /*
178 * The 82599 supports up to 64 VFs per physical function
179 * but this implementation limits allocation to 63 so that
180 * basic networking resources are still available to the
181 * physical function. If the user requests greater than
182 * 63 VFs then it is an error - reset to default of zero.
183 */
184 num_vfs = min_t(unsigned int, max_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
185
186 err = pci_enable_sriov(adapter->pdev, num_vfs);
187 if (err) {
188 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
189 return;
190 }
191 }
192
193 if (!__ixgbe_enable_sriov(adapter, num_vfs)) {
194 ixgbe_get_vfs(adapter);
195 return;
196 }
197
198 /* If we have gotten to this point then there is no memory available
199 * to manage the VF devices - print message and bail.
200 */
201 e_err(probe, "Unable to allocate memory for VF Data Storage - "
202 "SRIOV disabled\n");
203 ixgbe_disable_sriov(adapter);
204}
205
206#endif /* #ifdef CONFIG_PCI_IOV */
207int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
208{
209 unsigned int num_vfs = adapter->num_vfs, vf;
210 unsigned long flags;
211 int rss;
212
213 spin_lock_irqsave(&adapter->vfs_lock, flags);
214 /* set num VFs to 0 to prevent access to vfinfo */
215 adapter->num_vfs = 0;
216 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
217
218 /* put the reference to all of the vf devices */
219 for (vf = 0; vf < num_vfs; ++vf) {
220 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
221
222 if (!vfdev)
223 continue;
224 adapter->vfinfo[vf].vfdev = NULL;
225 pci_dev_put(vfdev);
226 }
227
228 /* free VF control structures */
229 kfree(adapter->vfinfo);
230 adapter->vfinfo = NULL;
231
232 /* free macvlan list */
233 kfree(adapter->mv_list);
234 adapter->mv_list = NULL;
235
236 /* if SR-IOV is already disabled then there is nothing to do */
237 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
238 return 0;
239
240#ifdef CONFIG_PCI_IOV
241 /*
242 * If our VFs are assigned we cannot shut down SR-IOV
243 * without causing issues, so just leave the hardware
244 * available but disabled
245 */
246 if (pci_vfs_assigned(adapter->pdev)) {
247 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
248 return -EPERM;
249 }
250 /* disable iov and allow time for transactions to clear */
251 pci_disable_sriov(adapter->pdev);
252#endif
253
254 /* Disable VMDq flag so device will be set in VM mode */
255 if (bitmap_weight(adapter->fwd_bitmask, adapter->num_rx_pools) == 1) {
256 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
257 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
258 rss = min_t(int, ixgbe_max_rss_indices(adapter),
259 num_online_cpus());
260 } else {
261 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
262 }
263
264 adapter->ring_feature[RING_F_VMDQ].offset = 0;
265 adapter->ring_feature[RING_F_RSS].limit = rss;
266
267 /* take a breather then clean up driver data */
268 msleep(100);
269 return 0;
270}
271
272static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
273{
274#ifdef CONFIG_PCI_IOV
275 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
276 int pre_existing_vfs = pci_num_vf(dev);
277 int err = 0, num_rx_pools, i, limit;
278 u8 num_tc;
279
280 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
281 err = ixgbe_disable_sriov(adapter);
282 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
283 return num_vfs;
284
285 if (err)
286 return err;
287
288 /* While the SR-IOV capability structure reports total VFs to be 64,
289 * we limit the actual number allocated as below based on two factors.
290 * Num_TCs MAX_VFs
291 * 1 63
292 * <=4 31
293 * >4 15
294 * First, we reserve some transmit/receive resources for the PF.
295 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
296 * account for this, so that we don't accidentally allocate more VFs
297 * than we have available pools. The PCI bus driver already checks for
298 * other values out of range.
299 */
300 num_tc = adapter->hw_tcs;
301 num_rx_pools = bitmap_weight(adapter->fwd_bitmask,
302 adapter->num_rx_pools);
303 limit = (num_tc > 4) ? IXGBE_MAX_VFS_8TC :
304 (num_tc > 1) ? IXGBE_MAX_VFS_4TC : IXGBE_MAX_VFS_1TC;
305
306 if (num_vfs > (limit - num_rx_pools)) {
307 e_dev_err("Currently configured with %d TCs, and %d offloaded macvlans. Creating more than %d VFs is not allowed\n",
308 num_tc, num_rx_pools - 1, limit - num_rx_pools);
309 return -EPERM;
310 }
311
312 err = __ixgbe_enable_sriov(adapter, num_vfs);
313 if (err)
314 return err;
315
316 for (i = 0; i < num_vfs; i++)
317 ixgbe_vf_configuration(dev, (i | 0x10000000));
318
319 /* reset before enabling SRIOV to avoid mailbox issues */
320 ixgbe_sriov_reinit(adapter);
321
322 err = pci_enable_sriov(dev, num_vfs);
323 if (err) {
324 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
325 return err;
326 }
327 ixgbe_get_vfs(adapter);
328
329 return num_vfs;
330#else
331 return 0;
332#endif
333}
334
335static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
336{
337 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
338 int err;
339#ifdef CONFIG_PCI_IOV
340 u32 current_flags = adapter->flags;
341 int prev_num_vf = pci_num_vf(dev);
342#endif
343
344 err = ixgbe_disable_sriov(adapter);
345
346 /* Only reinit if no error and state changed */
347#ifdef CONFIG_PCI_IOV
348 if (!err && (current_flags != adapter->flags ||
349 prev_num_vf != pci_num_vf(dev)))
350 ixgbe_sriov_reinit(adapter);
351#endif
352
353 return err;
354}
355
356int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
357{
358 if (num_vfs == 0)
359 return ixgbe_pci_sriov_disable(dev);
360 else
361 return ixgbe_pci_sriov_enable(dev, num_vfs);
362}
363
364static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
365 u32 *msgbuf, u32 vf)
366{
367 int entries = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
368 u16 *hash_list = (u16 *)&msgbuf[1];
369 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
370 struct ixgbe_hw *hw = &adapter->hw;
371 int i;
372 u32 vector_bit;
373 u32 vector_reg;
374 u32 mta_reg;
375 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
376
377 /* only so many hash values supported */
378 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
379
380 /*
381 * salt away the number of multi cast addresses assigned
382 * to this VF for later use to restore when the PF multi cast
383 * list changes
384 */
385 vfinfo->num_vf_mc_hashes = entries;
386
387 /*
388 * VFs are limited to using the MTA hash table for their multicast
389 * addresses
390 */
391 for (i = 0; i < entries; i++) {
392 vfinfo->vf_mc_hashes[i] = hash_list[i];
393 }
394
395 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
396 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
397 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
398 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
399 mta_reg |= BIT(vector_bit);
400 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
401 }
402 vmolr |= IXGBE_VMOLR_ROMPE;
403 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
404
405 return 0;
406}
407
408#ifdef CONFIG_PCI_IOV
409void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
410{
411 struct ixgbe_hw *hw = &adapter->hw;
412 struct vf_data_storage *vfinfo;
413 int i, j;
414 u32 vector_bit;
415 u32 vector_reg;
416 u32 mta_reg;
417
418 for (i = 0; i < adapter->num_vfs; i++) {
419 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
420 vfinfo = &adapter->vfinfo[i];
421 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
422 hw->addr_ctrl.mta_in_use++;
423 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
424 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
425 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
426 mta_reg |= BIT(vector_bit);
427 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
428 }
429
430 if (vfinfo->num_vf_mc_hashes)
431 vmolr |= IXGBE_VMOLR_ROMPE;
432 else
433 vmolr &= ~IXGBE_VMOLR_ROMPE;
434 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
435 }
436
437 /* Restore any VF macvlans */
438 ixgbe_full_sync_mac_table(adapter);
439}
440#endif
441
442static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
443 u32 vf)
444{
445 struct ixgbe_hw *hw = &adapter->hw;
446 int err;
447
448 /* If VLAN overlaps with one the PF is currently monitoring make
449 * sure that we are able to allocate a VLVF entry. This may be
450 * redundant but it guarantees PF will maintain visibility to
451 * the VLAN.
452 */
453 if (add && test_bit(vid, adapter->active_vlans)) {
454 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
455 if (err)
456 return err;
457 }
458
459 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
460
461 if (add && !err)
462 return err;
463
464 /* If we failed to add the VF VLAN or we are removing the VF VLAN
465 * we may need to drop the PF pool bit in order to allow us to free
466 * up the VLVF resources.
467 */
468 if (test_bit(vid, adapter->active_vlans) ||
469 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
470 ixgbe_update_pf_promisc_vlvf(adapter, vid);
471
472 return err;
473}
474
475static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)
476{
477 struct ixgbe_hw *hw = &adapter->hw;
478 u32 max_frs;
479
480 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
481 e_err(drv, "VF max_frame %d out of range\n", max_frame);
482 return -EINVAL;
483 }
484
485 /*
486 * For 82599EB we have to keep all PFs and VFs operating with
487 * the same max_frame value in order to avoid sending an oversize
488 * frame to a VF. In order to guarantee this is handled correctly
489 * for all cases we have several special exceptions to take into
490 * account before we can enable the VF for receive
491 */
492 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
493 struct net_device *dev = adapter->netdev;
494 int pf_max_frame = dev->mtu + ETH_HLEN;
495 u32 reg_offset, vf_shift, vfre;
496 int err = 0;
497
498#ifdef CONFIG_FCOE
499 if (dev->fcoe_mtu)
500 pf_max_frame = max_t(int, pf_max_frame,
501 IXGBE_FCOE_JUMBO_FRAME_SIZE);
502
503#endif /* CONFIG_FCOE */
504 switch (adapter->vfinfo[vf].vf_api) {
505 case ixgbe_mbox_api_11:
506 case ixgbe_mbox_api_12:
507 case ixgbe_mbox_api_13:
508 case ixgbe_mbox_api_14:
509 /* Version 1.1 supports jumbo frames on VFs if PF has
510 * jumbo frames enabled which means legacy VFs are
511 * disabled
512 */
513 if (pf_max_frame > ETH_FRAME_LEN)
514 break;
515 fallthrough;
516 default:
517 /* If the PF or VF are running w/ jumbo frames enabled
518 * we need to shut down the VF Rx path as we cannot
519 * support jumbo frames on legacy VFs
520 */
521 if ((pf_max_frame > ETH_FRAME_LEN) ||
522 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
523 err = -EINVAL;
524 break;
525 }
526
527 /* determine VF receive enable location */
528 vf_shift = vf % 32;
529 reg_offset = vf / 32;
530
531 /* enable or disable receive depending on error */
532 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
533 if (err)
534 vfre &= ~BIT(vf_shift);
535 else
536 vfre |= BIT(vf_shift);
537 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
538
539 if (err) {
540 e_err(drv, "VF max_frame %d out of range\n", max_frame);
541 return err;
542 }
543 }
544
545 /* pull current max frame size from hardware */
546 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
547 max_frs &= IXGBE_MHADD_MFS_MASK;
548 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
549
550 if (max_frs < max_frame) {
551 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
552 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
553 }
554
555 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
556
557 return 0;
558}
559
560static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
561{
562 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
563 vmolr |= IXGBE_VMOLR_BAM;
564 if (aupe)
565 vmolr |= IXGBE_VMOLR_AUPE;
566 else
567 vmolr &= ~IXGBE_VMOLR_AUPE;
568 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
569}
570
571static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
572{
573 struct ixgbe_hw *hw = &adapter->hw;
574
575 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
576}
577
578static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
579{
580 struct ixgbe_hw *hw = &adapter->hw;
581 u32 vlvfb_mask, pool_mask, i;
582
583 /* create mask for VF and other pools */
584 pool_mask = ~BIT(VMDQ_P(0) % 32);
585 vlvfb_mask = BIT(vf % 32);
586
587 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
588 for (i = IXGBE_VLVF_ENTRIES; i--;) {
589 u32 bits[2], vlvfb, vid, vfta, vlvf;
590 u32 word = i * 2 + vf / 32;
591 u32 mask;
592
593 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
594
595 /* if our bit isn't set we can skip it */
596 if (!(vlvfb & vlvfb_mask))
597 continue;
598
599 /* clear our bit from vlvfb */
600 vlvfb ^= vlvfb_mask;
601
602 /* create 64b mask to chedk to see if we should clear VLVF */
603 bits[word % 2] = vlvfb;
604 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
605
606 /* if other pools are present, just remove ourselves */
607 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
608 (bits[VMDQ_P(0) / 32] & pool_mask))
609 goto update_vlvfb;
610
611 /* if PF is present, leave VFTA */
612 if (bits[0] || bits[1])
613 goto update_vlvf;
614
615 /* if we cannot determine VLAN just remove ourselves */
616 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
617 if (!vlvf)
618 goto update_vlvfb;
619
620 vid = vlvf & VLAN_VID_MASK;
621 mask = BIT(vid % 32);
622
623 /* clear bit from VFTA */
624 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
625 if (vfta & mask)
626 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
627update_vlvf:
628 /* clear POOL selection enable */
629 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
630
631 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
632 vlvfb = 0;
633update_vlvfb:
634 /* clear pool bits */
635 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
636 }
637}
638
639static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
640 int vf, int index, unsigned char *mac_addr)
641{
642 struct vf_macvlans *entry;
643 bool found = false;
644 int retval = 0;
645
646 if (index <= 1) {
647 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
648 if (entry->vf == vf) {
649 entry->vf = -1;
650 entry->free = true;
651 entry->is_macvlan = false;
652 ixgbe_del_mac_filter(adapter,
653 entry->vf_macvlan, vf);
654 }
655 }
656 }
657
658 /*
659 * If index was zero then we were asked to clear the uc list
660 * for the VF. We're done.
661 */
662 if (!index)
663 return 0;
664
665 list_for_each_entry(entry, &adapter->vf_mvs.l, l) {
666 if (entry->free) {
667 found = true;
668 break;
669 }
670 }
671
672 /*
673 * If we traversed the entire list and didn't find a free entry
674 * then we're out of space on the RAR table. It's also possible
675 * for the &adapter->vf_mvs.l list to be empty because the original
676 * memory allocation for the list failed, which is not fatal but does
677 * mean we can't support VF requests for MACVLAN because we couldn't
678 * allocate memory for the list management required.
679 */
680 if (!found)
681 return -ENOSPC;
682
683 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
684 if (retval < 0)
685 return retval;
686
687 entry->free = false;
688 entry->is_macvlan = true;
689 entry->vf = vf;
690 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
691
692 return 0;
693}
694
695static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
696{
697 struct ixgbe_hw *hw = &adapter->hw;
698 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
699 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
700 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
701 u8 num_tcs = adapter->hw_tcs;
702 u32 reg_val;
703 u32 queue;
704
705 /* remove VLAN filters beloning to this VF */
706 ixgbe_clear_vf_vlans(adapter, vf);
707
708 /* add back PF assigned VLAN or VLAN 0 */
709 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
710
711 /* reset offloads to defaults */
712 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
713
714 /* set outgoing tags for VFs */
715 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
716 ixgbe_clear_vmvir(adapter, vf);
717 } else {
718 if (vfinfo->pf_qos || !num_tcs)
719 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
720 vfinfo->pf_qos, vf);
721 else
722 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
723 adapter->default_up, vf);
724
725 if (vfinfo->spoofchk_enabled) {
726 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
727 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
728 }
729 }
730
731 /* reset multicast table array for vf */
732 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
733
734 /* clear any ipsec table info */
735 ixgbe_ipsec_vf_clear(adapter, vf);
736
737 /* Flush and reset the mta with the new values */
738 ixgbe_set_rx_mode(adapter->netdev);
739
740 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
741 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
742
743 /* reset VF api back to unknown */
744 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
745
746 /* Restart each queue for given VF */
747 for (queue = 0; queue < q_per_pool; queue++) {
748 unsigned int reg_idx = (vf * q_per_pool) + queue;
749
750 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
751
752 /* Re-enabling only configured queues */
753 if (reg_val) {
754 reg_val |= IXGBE_TXDCTL_ENABLE;
755 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
756 reg_val &= ~IXGBE_TXDCTL_ENABLE;
757 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
758 }
759 }
760
761 IXGBE_WRITE_FLUSH(hw);
762}
763
764static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
765{
766 struct ixgbe_hw *hw = &adapter->hw;
767 u32 word;
768
769 /* Clear VF's mailbox memory */
770 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
771 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
772
773 IXGBE_WRITE_FLUSH(hw);
774}
775
776static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
777 int vf, unsigned char *mac_addr)
778{
779 int retval;
780
781 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
782 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
783 if (retval >= 0)
784 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
785 ETH_ALEN);
786 else
787 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);
788
789 return retval;
790}
791
792int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
793{
794 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
795 unsigned int vfn = (event_mask & 0x3f);
796
797 bool enable = ((event_mask & 0x10000000U) != 0);
798
799 if (enable)
800 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
801
802 return 0;
803}
804
805static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
806 u32 qde)
807{
808 struct ixgbe_hw *hw = &adapter->hw;
809 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
810 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
811 int i;
812
813 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
814 u32 reg;
815
816 /* flush previous write */
817 IXGBE_WRITE_FLUSH(hw);
818
819 /* indicate to hardware that we want to set drop enable */
820 reg = IXGBE_QDE_WRITE | qde;
821 reg |= i << IXGBE_QDE_IDX_SHIFT;
822 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
823 }
824}
825
826/**
827 * ixgbe_set_vf_rx_tx - Set VF rx tx
828 * @adapter: Pointer to adapter struct
829 * @vf: VF identifier
830 *
831 * Set or reset correct transmit and receive for vf
832 **/
833static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)
834{
835 u32 reg_cur_tx, reg_cur_rx, reg_req_tx, reg_req_rx;
836 struct ixgbe_hw *hw = &adapter->hw;
837 u32 reg_offset, vf_shift;
838
839 vf_shift = vf % 32;
840 reg_offset = vf / 32;
841
842 reg_cur_tx = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
843 reg_cur_rx = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
844
845 if (adapter->vfinfo[vf].link_enable) {
846 reg_req_tx = reg_cur_tx | 1 << vf_shift;
847 reg_req_rx = reg_cur_rx | 1 << vf_shift;
848 } else {
849 reg_req_tx = reg_cur_tx & ~(1 << vf_shift);
850 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
851 }
852
853 /* The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
854 * For more info take a look at ixgbe_set_vf_lpe
855 */
856 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
857 struct net_device *dev = adapter->netdev;
858 int pf_max_frame = dev->mtu + ETH_HLEN;
859
860#if IS_ENABLED(CONFIG_FCOE)
861 if (dev->fcoe_mtu)
862 pf_max_frame = max_t(int, pf_max_frame,
863 IXGBE_FCOE_JUMBO_FRAME_SIZE);
864#endif /* CONFIG_FCOE */
865
866 if (pf_max_frame > ETH_FRAME_LEN)
867 reg_req_rx = reg_cur_rx & ~(1 << vf_shift);
868 }
869
870 /* Enable/Disable particular VF */
871 if (reg_cur_tx != reg_req_tx)
872 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg_req_tx);
873 if (reg_cur_rx != reg_req_rx)
874 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg_req_rx);
875}
876
877static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
878{
879 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
880 struct ixgbe_hw *hw = &adapter->hw;
881 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
882 u32 reg, reg_offset, vf_shift;
883 u32 msgbuf[4] = {0, 0, 0, 0};
884 u8 *addr = (u8 *)(&msgbuf[1]);
885 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
886 int i;
887
888 e_info(probe, "VF Reset msg received from vf %d\n", vf);
889
890 /* reset the filters for the device */
891 ixgbe_vf_reset_event(adapter, vf);
892
893 ixgbe_vf_clear_mbx(adapter, vf);
894
895 /* set vf mac address */
896 if (!is_zero_ether_addr(vf_mac))
897 ixgbe_set_vf_mac(adapter, vf, vf_mac);
898
899 vf_shift = vf % 32;
900 reg_offset = vf / 32;
901
902 /* force drop enable for all VF Rx queues */
903 reg = IXGBE_QDE_ENABLE;
904 if (adapter->vfinfo[vf].pf_vlan)
905 reg |= IXGBE_QDE_HIDE_VLAN;
906
907 ixgbe_write_qde(adapter, vf, reg);
908
909 ixgbe_set_vf_rx_tx(adapter, vf);
910
911 /* enable VF mailbox for further messages */
912 adapter->vfinfo[vf].clear_to_send = true;
913
914 /* Enable counting of spoofed packets in the SSVPC register */
915 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
916 reg |= BIT(vf_shift);
917 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
918
919 /*
920 * Reset the VFs TDWBAL and TDWBAH registers
921 * which are not cleared by an FLR
922 */
923 for (i = 0; i < q_per_pool; i++) {
924 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
925 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
926 }
927
928 /* reply to reset with ack and vf mac address */
929 msgbuf[0] = IXGBE_VF_RESET;
930 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
931 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
932 memcpy(addr, vf_mac, ETH_ALEN);
933 } else {
934 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
935 }
936
937 /*
938 * Piggyback the multicast filter type so VF can compute the
939 * correct vectors
940 */
941 msgbuf[3] = hw->mac.mc_filter_type;
942 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
943
944 return 0;
945}
946
947static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
948 u32 *msgbuf, u32 vf)
949{
950 u8 *new_mac = ((u8 *)(&msgbuf[1]));
951
952 if (!is_valid_ether_addr(new_mac)) {
953 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
954 return -1;
955 }
956
957 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
958 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
959 e_warn(drv,
960 "VF %d attempted to override administratively set MAC address\n"
961 "Reload the VF driver to resume operations\n",
962 vf);
963 return -1;
964 }
965
966 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
967}
968
969static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
970 u32 *msgbuf, u32 vf)
971{
972 u32 add = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
973 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
974 u8 tcs = adapter->hw_tcs;
975
976 if (adapter->vfinfo[vf].pf_vlan || tcs) {
977 e_warn(drv,
978 "VF %d attempted to override administratively set VLAN configuration\n"
979 "Reload the VF driver to resume operations\n",
980 vf);
981 return -1;
982 }
983
984 /* VLAN 0 is a special case, don't allow it to be removed */
985 if (!vid && !add)
986 return 0;
987
988 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
989}
990
991static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
992 u32 *msgbuf, u32 vf)
993{
994 u8 *new_mac = ((u8 *)(&msgbuf[1]));
995 int index = FIELD_GET(IXGBE_VT_MSGINFO_MASK, msgbuf[0]);
996 int err;
997
998 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
999 index > 0) {
1000 e_warn(drv,
1001 "VF %d requested MACVLAN filter but is administratively denied\n",
1002 vf);
1003 return -1;
1004 }
1005
1006 /* An non-zero index indicates the VF is setting a filter */
1007 if (index) {
1008 if (!is_valid_ether_addr(new_mac)) {
1009 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
1010 return -1;
1011 }
1012
1013 /*
1014 * If the VF is allowed to set MAC filters then turn off
1015 * anti-spoofing to avoid false positives.
1016 */
1017 if (adapter->vfinfo[vf].spoofchk_enabled) {
1018 struct ixgbe_hw *hw = &adapter->hw;
1019
1020 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
1021 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1022 }
1023 }
1024
1025 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
1026 if (err == -ENOSPC)
1027 e_warn(drv,
1028 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1029 vf);
1030
1031 return err < 0;
1032}
1033
1034static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1035 u32 *msgbuf, u32 vf)
1036{
1037 int api = msgbuf[1];
1038
1039 switch (api) {
1040 case ixgbe_mbox_api_10:
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 adapter->vfinfo[vf].vf_api = api;
1046 return 0;
1047 default:
1048 break;
1049 }
1050
1051 e_dbg(drv, "VF %d requested unsupported api version %u\n", vf, api);
1052
1053 return -1;
1054}
1055
1056static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1057 u32 *msgbuf, u32 vf)
1058{
1059 struct net_device *dev = adapter->netdev;
1060 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1061 unsigned int default_tc = 0;
1062 u8 num_tcs = adapter->hw_tcs;
1063
1064 /* verify the PF is supporting the correct APIs */
1065 switch (adapter->vfinfo[vf].vf_api) {
1066 case ixgbe_mbox_api_20:
1067 case ixgbe_mbox_api_11:
1068 case ixgbe_mbox_api_12:
1069 case ixgbe_mbox_api_13:
1070 case ixgbe_mbox_api_14:
1071 break;
1072 default:
1073 return -1;
1074 }
1075
1076 /* only allow 1 Tx queue for bandwidth limiting */
1077 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1078 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1079
1080 /* if TCs > 1 determine which TC belongs to default user priority */
1081 if (num_tcs > 1)
1082 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1083
1084 /* notify VF of need for VLAN tag stripping, and correct queue */
1085 if (num_tcs)
1086 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1087 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1088 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1089 else
1090 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1091
1092 /* notify VF of default queue */
1093 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1094
1095 return 0;
1096}
1097
1098static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1099{
1100 u32 i, j;
1101 u32 *out_buf = &msgbuf[1];
1102 const u8 *reta = adapter->rss_indir_tbl;
1103 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1104
1105 /* Check if operation is permitted */
1106 if (!adapter->vfinfo[vf].rss_query_enabled)
1107 return -EPERM;
1108
1109 /* verify the PF is supporting the correct API */
1110 switch (adapter->vfinfo[vf].vf_api) {
1111 case ixgbe_mbox_api_14:
1112 case ixgbe_mbox_api_13:
1113 case ixgbe_mbox_api_12:
1114 break;
1115 default:
1116 return -EOPNOTSUPP;
1117 }
1118
1119 /* This mailbox command is supported (required) only for 82599 and x540
1120 * VFs which support up to 4 RSS queues. Therefore we will compress the
1121 * RETA by saving only 2 bits from each entry. This way we will be able
1122 * to transfer the whole RETA in a single mailbox operation.
1123 */
1124 for (i = 0; i < reta_size / 16; i++) {
1125 out_buf[i] = 0;
1126 for (j = 0; j < 16; j++)
1127 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1128 }
1129
1130 return 0;
1131}
1132
1133static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1134 u32 *msgbuf, u32 vf)
1135{
1136 u32 *rss_key = &msgbuf[1];
1137
1138 /* Check if the operation is permitted */
1139 if (!adapter->vfinfo[vf].rss_query_enabled)
1140 return -EPERM;
1141
1142 /* verify the PF is supporting the correct API */
1143 switch (adapter->vfinfo[vf].vf_api) {
1144 case ixgbe_mbox_api_14:
1145 case ixgbe_mbox_api_13:
1146 case ixgbe_mbox_api_12:
1147 break;
1148 default:
1149 return -EOPNOTSUPP;
1150 }
1151
1152 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1153
1154 return 0;
1155}
1156
1157static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1158 u32 *msgbuf, u32 vf)
1159{
1160 struct ixgbe_hw *hw = &adapter->hw;
1161 int xcast_mode = msgbuf[1];
1162 u32 vmolr, fctrl, disable, enable;
1163
1164 /* verify the PF is supporting the correct APIs */
1165 switch (adapter->vfinfo[vf].vf_api) {
1166 case ixgbe_mbox_api_12:
1167 /* promisc introduced in 1.3 version */
1168 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1169 return -EOPNOTSUPP;
1170 fallthrough;
1171 case ixgbe_mbox_api_13:
1172 case ixgbe_mbox_api_14:
1173 break;
1174 default:
1175 return -EOPNOTSUPP;
1176 }
1177
1178 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1179 !adapter->vfinfo[vf].trusted) {
1180 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1181 }
1182
1183 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1184 goto out;
1185
1186 switch (xcast_mode) {
1187 case IXGBEVF_XCAST_MODE_NONE:
1188 disable = IXGBE_VMOLR_ROMPE |
1189 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1190 enable = IXGBE_VMOLR_BAM;
1191 break;
1192 case IXGBEVF_XCAST_MODE_MULTI:
1193 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1194 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1195 break;
1196 case IXGBEVF_XCAST_MODE_ALLMULTI:
1197 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1198 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1199 break;
1200 case IXGBEVF_XCAST_MODE_PROMISC:
1201 if (hw->mac.type <= ixgbe_mac_82599EB)
1202 return -EOPNOTSUPP;
1203
1204 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1205 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1206 /* VF promisc requires PF in promisc */
1207 e_warn(drv,
1208 "Enabling VF promisc requires PF in promisc\n");
1209 return -EPERM;
1210 }
1211
1212 disable = IXGBE_VMOLR_VPE;
1213 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1214 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE;
1215 break;
1216 default:
1217 return -EOPNOTSUPP;
1218 }
1219
1220 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1221 vmolr &= ~disable;
1222 vmolr |= enable;
1223 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1224
1225 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1226
1227out:
1228 msgbuf[1] = xcast_mode;
1229
1230 return 0;
1231}
1232
1233static int ixgbe_get_vf_link_state(struct ixgbe_adapter *adapter,
1234 u32 *msgbuf, u32 vf)
1235{
1236 u32 *link_state = &msgbuf[1];
1237
1238 /* verify the PF is supporting the correct API */
1239 switch (adapter->vfinfo[vf].vf_api) {
1240 case ixgbe_mbox_api_12:
1241 case ixgbe_mbox_api_13:
1242 case ixgbe_mbox_api_14:
1243 break;
1244 default:
1245 return -EOPNOTSUPP;
1246 }
1247
1248 *link_state = adapter->vfinfo[vf].link_enable;
1249
1250 return 0;
1251}
1252
1253static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1254{
1255 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1256 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1257 struct ixgbe_hw *hw = &adapter->hw;
1258 int retval;
1259
1260 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1261
1262 if (retval) {
1263 pr_err("Error receiving message from VF\n");
1264 return retval;
1265 }
1266
1267 /* this is a message we already processed, do nothing */
1268 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1269 return 0;
1270
1271 /* flush the ack before we write any messages back */
1272 IXGBE_WRITE_FLUSH(hw);
1273
1274 if (msgbuf[0] == IXGBE_VF_RESET)
1275 return ixgbe_vf_reset_msg(adapter, vf);
1276
1277 /*
1278 * until the vf completes a virtual function reset it should not be
1279 * allowed to start any configuration.
1280 */
1281 if (!adapter->vfinfo[vf].clear_to_send) {
1282 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1283 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1284 return 0;
1285 }
1286
1287 switch ((msgbuf[0] & 0xFFFF)) {
1288 case IXGBE_VF_SET_MAC_ADDR:
1289 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1290 break;
1291 case IXGBE_VF_SET_MULTICAST:
1292 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1293 break;
1294 case IXGBE_VF_SET_VLAN:
1295 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1296 break;
1297 case IXGBE_VF_SET_LPE:
1298 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1299 break;
1300 case IXGBE_VF_SET_MACVLAN:
1301 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1302 break;
1303 case IXGBE_VF_API_NEGOTIATE:
1304 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1305 break;
1306 case IXGBE_VF_GET_QUEUES:
1307 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1308 break;
1309 case IXGBE_VF_GET_RETA:
1310 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1311 break;
1312 case IXGBE_VF_GET_RSS_KEY:
1313 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1314 break;
1315 case IXGBE_VF_UPDATE_XCAST_MODE:
1316 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1317 break;
1318 case IXGBE_VF_GET_LINK_STATE:
1319 retval = ixgbe_get_vf_link_state(adapter, msgbuf, vf);
1320 break;
1321 case IXGBE_VF_IPSEC_ADD:
1322 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1323 break;
1324 case IXGBE_VF_IPSEC_DEL:
1325 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1326 break;
1327 default:
1328 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1329 retval = -EIO;
1330 break;
1331 }
1332
1333 /* notify the VF of the results of what it sent us */
1334 if (retval)
1335 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1336 else
1337 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1338
1339 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1340
1341 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1342
1343 return retval;
1344}
1345
1346static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1347{
1348 struct ixgbe_hw *hw = &adapter->hw;
1349 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1350
1351 /* if device isn't clear to send it shouldn't be reading either */
1352 if (!adapter->vfinfo[vf].clear_to_send)
1353 ixgbe_write_mbx(hw, &msg, 1, vf);
1354}
1355
1356void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1357{
1358 struct ixgbe_hw *hw = &adapter->hw;
1359 unsigned long flags;
1360 u32 vf;
1361
1362 spin_lock_irqsave(&adapter->vfs_lock, flags);
1363 for (vf = 0; vf < adapter->num_vfs; vf++) {
1364 /* process any reset requests */
1365 if (!ixgbe_check_for_rst(hw, vf))
1366 ixgbe_vf_reset_event(adapter, vf);
1367
1368 /* process any messages pending */
1369 if (!ixgbe_check_for_msg(hw, vf))
1370 ixgbe_rcv_msg_from_vf(adapter, vf);
1371
1372 /* process any acks */
1373 if (!ixgbe_check_for_ack(hw, vf))
1374 ixgbe_rcv_ack_from_vf(adapter, vf);
1375 }
1376 spin_unlock_irqrestore(&adapter->vfs_lock, flags);
1377}
1378
1379static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1380{
1381 struct ixgbe_hw *hw = &adapter->hw;
1382 u32 ping;
1383
1384 ping = IXGBE_PF_CONTROL_MSG;
1385 if (adapter->vfinfo[vf].clear_to_send)
1386 ping |= IXGBE_VT_MSGTYPE_CTS;
1387 ixgbe_write_mbx(hw, &ping, 1, vf);
1388}
1389
1390void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1391{
1392 struct ixgbe_hw *hw = &adapter->hw;
1393 u32 ping;
1394 int i;
1395
1396 for (i = 0 ; i < adapter->num_vfs; i++) {
1397 ping = IXGBE_PF_CONTROL_MSG;
1398 if (adapter->vfinfo[i].clear_to_send)
1399 ping |= IXGBE_VT_MSGTYPE_CTS;
1400 ixgbe_write_mbx(hw, &ping, 1, i);
1401 }
1402}
1403
1404/**
1405 * ixgbe_set_all_vfs - update vfs queues
1406 * @adapter: Pointer to adapter struct
1407 *
1408 * Update setting transmit and receive queues for all vfs
1409 **/
1410void ixgbe_set_all_vfs(struct ixgbe_adapter *adapter)
1411{
1412 int i;
1413
1414 for (i = 0 ; i < adapter->num_vfs; i++)
1415 ixgbe_set_vf_link_state(adapter, i,
1416 adapter->vfinfo[i].link_state);
1417}
1418
1419int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1420{
1421 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1422 int retval;
1423
1424 if (vf >= adapter->num_vfs)
1425 return -EINVAL;
1426
1427 if (is_valid_ether_addr(mac)) {
1428 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1429 mac, vf);
1430 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1431
1432 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1433 if (retval >= 0) {
1434 adapter->vfinfo[vf].pf_set_mac = true;
1435
1436 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1437 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1438 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1439 }
1440 } else {
1441 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1442 }
1443 } else if (is_zero_ether_addr(mac)) {
1444 unsigned char *vf_mac_addr =
1445 adapter->vfinfo[vf].vf_mac_addresses;
1446
1447 /* nothing to do */
1448 if (is_zero_ether_addr(vf_mac_addr))
1449 return 0;
1450
1451 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1452
1453 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1454 if (retval >= 0) {
1455 adapter->vfinfo[vf].pf_set_mac = false;
1456 memcpy(vf_mac_addr, mac, ETH_ALEN);
1457 } else {
1458 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1459 }
1460 } else {
1461 retval = -EINVAL;
1462 }
1463
1464 return retval;
1465}
1466
1467static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1468 u16 vlan, u8 qos)
1469{
1470 struct ixgbe_hw *hw = &adapter->hw;
1471 int err;
1472
1473 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1474 if (err)
1475 goto out;
1476
1477 /* Revoke tagless access via VLAN 0 */
1478 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1479
1480 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1481 ixgbe_set_vmolr(hw, vf, false);
1482
1483 /* enable hide vlan on X550 */
1484 if (hw->mac.type >= ixgbe_mac_X550)
1485 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1486 IXGBE_QDE_HIDE_VLAN);
1487
1488 adapter->vfinfo[vf].pf_vlan = vlan;
1489 adapter->vfinfo[vf].pf_qos = qos;
1490 dev_info(&adapter->pdev->dev,
1491 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1492 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1493 dev_warn(&adapter->pdev->dev,
1494 "The VF VLAN has been set, but the PF device is not up.\n");
1495 dev_warn(&adapter->pdev->dev,
1496 "Bring the PF device up before attempting to use the VF device.\n");
1497 }
1498
1499out:
1500 return err;
1501}
1502
1503static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1504{
1505 struct ixgbe_hw *hw = &adapter->hw;
1506 int err;
1507
1508 err = ixgbe_set_vf_vlan(adapter, false,
1509 adapter->vfinfo[vf].pf_vlan, vf);
1510 /* Restore tagless access via VLAN 0 */
1511 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1512 ixgbe_clear_vmvir(adapter, vf);
1513 ixgbe_set_vmolr(hw, vf, true);
1514
1515 /* disable hide VLAN on X550 */
1516 if (hw->mac.type >= ixgbe_mac_X550)
1517 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1518
1519 adapter->vfinfo[vf].pf_vlan = 0;
1520 adapter->vfinfo[vf].pf_qos = 0;
1521
1522 return err;
1523}
1524
1525int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1526 u8 qos, __be16 vlan_proto)
1527{
1528 int err = 0;
1529 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1530
1531 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1532 return -EINVAL;
1533 if (vlan_proto != htons(ETH_P_8021Q))
1534 return -EPROTONOSUPPORT;
1535 if (vlan || qos) {
1536 /* Check if there is already a port VLAN set, if so
1537 * we have to delete the old one first before we
1538 * can set the new one. The usage model had
1539 * previously assumed the user would delete the
1540 * old port VLAN before setting a new one but this
1541 * is not necessarily the case.
1542 */
1543 if (adapter->vfinfo[vf].pf_vlan)
1544 err = ixgbe_disable_port_vlan(adapter, vf);
1545 if (err)
1546 goto out;
1547 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1548 } else {
1549 err = ixgbe_disable_port_vlan(adapter, vf);
1550 }
1551
1552out:
1553 return err;
1554}
1555
1556int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1557{
1558 switch (adapter->link_speed) {
1559 case IXGBE_LINK_SPEED_100_FULL:
1560 return 100;
1561 case IXGBE_LINK_SPEED_1GB_FULL:
1562 return 1000;
1563 case IXGBE_LINK_SPEED_10GB_FULL:
1564 return 10000;
1565 default:
1566 return 0;
1567 }
1568}
1569
1570static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1571{
1572 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1573 struct ixgbe_hw *hw = &adapter->hw;
1574 u32 bcnrc_val = 0;
1575 u16 queue, queues_per_pool;
1576 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1577
1578 if (tx_rate) {
1579 /* start with base link speed value */
1580 bcnrc_val = adapter->vf_rate_link_speed;
1581
1582 /* Calculate the rate factor values to set */
1583 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1584 bcnrc_val /= tx_rate;
1585
1586 /* clear everything but the rate factor */
1587 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1588 IXGBE_RTTBCNRC_RF_DEC_MASK;
1589
1590 /* enable the rate scheduler */
1591 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1592 }
1593
1594 /*
1595 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1596 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1597 * and 0x004 otherwise.
1598 */
1599 switch (hw->mac.type) {
1600 case ixgbe_mac_82599EB:
1601 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1602 break;
1603 case ixgbe_mac_X540:
1604 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1605 break;
1606 default:
1607 break;
1608 }
1609
1610 /* determine how many queues per pool based on VMDq mask */
1611 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1612
1613 /* write value for all Tx queues belonging to VF */
1614 for (queue = 0; queue < queues_per_pool; queue++) {
1615 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1616
1617 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1618 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1619 }
1620}
1621
1622void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1623{
1624 int i;
1625
1626 /* VF Tx rate limit was not set */
1627 if (!adapter->vf_rate_link_speed)
1628 return;
1629
1630 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1631 adapter->vf_rate_link_speed = 0;
1632 dev_info(&adapter->pdev->dev,
1633 "Link speed has been changed. VF Transmit rate is disabled\n");
1634 }
1635
1636 for (i = 0; i < adapter->num_vfs; i++) {
1637 if (!adapter->vf_rate_link_speed)
1638 adapter->vfinfo[i].tx_rate = 0;
1639
1640 ixgbe_set_vf_rate_limit(adapter, i);
1641 }
1642}
1643
1644int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1645 int max_tx_rate)
1646{
1647 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1648 int link_speed;
1649
1650 /* verify VF is active */
1651 if (vf >= adapter->num_vfs)
1652 return -EINVAL;
1653
1654 /* verify link is up */
1655 if (!adapter->link_up)
1656 return -EINVAL;
1657
1658 /* verify we are linked at 10Gbps */
1659 link_speed = ixgbe_link_mbps(adapter);
1660 if (link_speed != 10000)
1661 return -EINVAL;
1662
1663 if (min_tx_rate)
1664 return -EINVAL;
1665
1666 /* rate limit cannot be less than 10Mbs or greater than link speed */
1667 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1668 return -EINVAL;
1669
1670 /* store values */
1671 adapter->vf_rate_link_speed = link_speed;
1672 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1673
1674 /* update hardware configuration */
1675 ixgbe_set_vf_rate_limit(adapter, vf);
1676
1677 return 0;
1678}
1679
1680int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1681{
1682 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1683 struct ixgbe_hw *hw = &adapter->hw;
1684
1685 if (vf >= adapter->num_vfs)
1686 return -EINVAL;
1687
1688 adapter->vfinfo[vf].spoofchk_enabled = setting;
1689
1690 /* configure MAC spoofing */
1691 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1692
1693 /* configure VLAN spoofing */
1694 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1695
1696 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1697 * calling set_ethertype_anti_spoofing for each VF in loop below
1698 */
1699 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1700 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1701 (IXGBE_ETQF_FILTER_EN |
1702 IXGBE_ETQF_TX_ANTISPOOF |
1703 ETH_P_LLDP));
1704
1705 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1706 (IXGBE_ETQF_FILTER_EN |
1707 IXGBE_ETQF_TX_ANTISPOOF |
1708 ETH_P_PAUSE));
1709
1710 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1711 }
1712
1713 return 0;
1714}
1715
1716/**
1717 * ixgbe_set_vf_link_state - Set link state
1718 * @adapter: Pointer to adapter struct
1719 * @vf: VF identifier
1720 * @state: required link state
1721 *
1722 * Set a link force state on/off a single vf
1723 **/
1724void ixgbe_set_vf_link_state(struct ixgbe_adapter *adapter, int vf, int state)
1725{
1726 adapter->vfinfo[vf].link_state = state;
1727
1728 switch (state) {
1729 case IFLA_VF_LINK_STATE_AUTO:
1730 if (test_bit(__IXGBE_DOWN, &adapter->state))
1731 adapter->vfinfo[vf].link_enable = false;
1732 else
1733 adapter->vfinfo[vf].link_enable = true;
1734 break;
1735 case IFLA_VF_LINK_STATE_ENABLE:
1736 adapter->vfinfo[vf].link_enable = true;
1737 break;
1738 case IFLA_VF_LINK_STATE_DISABLE:
1739 adapter->vfinfo[vf].link_enable = false;
1740 break;
1741 }
1742
1743 ixgbe_set_vf_rx_tx(adapter, vf);
1744
1745 /* restart the VF */
1746 adapter->vfinfo[vf].clear_to_send = false;
1747 ixgbe_ping_vf(adapter, vf);
1748}
1749
1750/**
1751 * ixgbe_ndo_set_vf_link_state - Set link state
1752 * @netdev: network interface device structure
1753 * @vf: VF identifier
1754 * @state: required link state
1755 *
1756 * Set the link state of a specified VF, regardless of physical link state
1757 **/
1758int ixgbe_ndo_set_vf_link_state(struct net_device *netdev, int vf, int state)
1759{
1760 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1761 int ret = 0;
1762
1763 if (vf < 0 || vf >= adapter->num_vfs) {
1764 dev_err(&adapter->pdev->dev,
1765 "NDO set VF link - invalid VF identifier %d\n", vf);
1766 return -EINVAL;
1767 }
1768
1769 switch (state) {
1770 case IFLA_VF_LINK_STATE_ENABLE:
1771 dev_info(&adapter->pdev->dev,
1772 "NDO set VF %d link state %d - not supported\n",
1773 vf, state);
1774 break;
1775 case IFLA_VF_LINK_STATE_DISABLE:
1776 dev_info(&adapter->pdev->dev,
1777 "NDO set VF %d link state disable\n", vf);
1778 ixgbe_set_vf_link_state(adapter, vf, state);
1779 break;
1780 case IFLA_VF_LINK_STATE_AUTO:
1781 dev_info(&adapter->pdev->dev,
1782 "NDO set VF %d link state auto\n", vf);
1783 ixgbe_set_vf_link_state(adapter, vf, state);
1784 break;
1785 default:
1786 dev_err(&adapter->pdev->dev,
1787 "NDO set VF %d - invalid link state %d\n", vf, state);
1788 ret = -EINVAL;
1789 }
1790
1791 return ret;
1792}
1793
1794int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1795 bool setting)
1796{
1797 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1798
1799 /* This operation is currently supported only for 82599 and x540
1800 * devices.
1801 */
1802 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1803 adapter->hw.mac.type >= ixgbe_mac_X550)
1804 return -EOPNOTSUPP;
1805
1806 if (vf >= adapter->num_vfs)
1807 return -EINVAL;
1808
1809 adapter->vfinfo[vf].rss_query_enabled = setting;
1810
1811 return 0;
1812}
1813
1814int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1815{
1816 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1817
1818 if (vf >= adapter->num_vfs)
1819 return -EINVAL;
1820
1821 /* nothing to do */
1822 if (adapter->vfinfo[vf].trusted == setting)
1823 return 0;
1824
1825 adapter->vfinfo[vf].trusted = setting;
1826
1827 /* reset VF to reconfigure features */
1828 adapter->vfinfo[vf].clear_to_send = false;
1829 ixgbe_ping_vf(adapter, vf);
1830
1831 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1832
1833 return 0;
1834}
1835
1836int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1837 int vf, struct ifla_vf_info *ivi)
1838{
1839 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1840 if (vf >= adapter->num_vfs)
1841 return -EINVAL;
1842 ivi->vf = vf;
1843 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1844 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1845 ivi->min_tx_rate = 0;
1846 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1847 ivi->qos = adapter->vfinfo[vf].pf_qos;
1848 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1849 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1850 ivi->trusted = adapter->vfinfo[vf].trusted;
1851 ivi->linkstate = adapter->vfinfo[vf].link_state;
1852 return 0;
1853}
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
24static 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
50static 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 = false;
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 */
122static 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 */
153void 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 */
204int 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
266static 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
329static 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
350int 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
358static 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
404void 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
437static 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
470static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf)
471{
472 struct ixgbe_hw *hw = &adapter->hw;
473 u32 max_frs;
474
475 if (max_frame < ETH_MIN_MTU || max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
476 e_err(drv, "VF max_frame %d out of range\n", max_frame);
477 return -EINVAL;
478 }
479
480 /*
481 * For 82599EB we have to keep all PFs and VFs operating with
482 * the same max_frame value in order to avoid sending an oversize
483 * frame to a VF. In order to guarantee this is handled correctly
484 * for all cases we have several special exceptions to take into
485 * account before we can enable the VF for receive
486 */
487 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
488 struct net_device *dev = adapter->netdev;
489 int pf_max_frame = dev->mtu + ETH_HLEN;
490 u32 reg_offset, vf_shift, vfre;
491 s32 err = 0;
492
493#ifdef CONFIG_FCOE
494 if (dev->features & NETIF_F_FCOE_MTU)
495 pf_max_frame = max_t(int, pf_max_frame,
496 IXGBE_FCOE_JUMBO_FRAME_SIZE);
497
498#endif /* CONFIG_FCOE */
499 switch (adapter->vfinfo[vf].vf_api) {
500 case ixgbe_mbox_api_11:
501 case ixgbe_mbox_api_12:
502 case ixgbe_mbox_api_13:
503 case ixgbe_mbox_api_14:
504 /* Version 1.1 supports jumbo frames on VFs if PF has
505 * jumbo frames enabled which means legacy VFs are
506 * disabled
507 */
508 if (pf_max_frame > ETH_FRAME_LEN)
509 break;
510 fallthrough;
511 default:
512 /* If the PF or VF are running w/ jumbo frames enabled
513 * we need to shut down the VF Rx path as we cannot
514 * support jumbo frames on legacy VFs
515 */
516 if ((pf_max_frame > ETH_FRAME_LEN) ||
517 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
518 err = -EINVAL;
519 break;
520 }
521
522 /* determine VF receive enable location */
523 vf_shift = vf % 32;
524 reg_offset = vf / 32;
525
526 /* enable or disable receive depending on error */
527 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
528 if (err)
529 vfre &= ~BIT(vf_shift);
530 else
531 vfre |= BIT(vf_shift);
532 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
533
534 if (err) {
535 e_err(drv, "VF max_frame %d out of range\n", max_frame);
536 return err;
537 }
538 }
539
540 /* pull current max frame size from hardware */
541 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
542 max_frs &= IXGBE_MHADD_MFS_MASK;
543 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
544
545 if (max_frs < max_frame) {
546 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
547 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
548 }
549
550 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
551
552 return 0;
553}
554
555static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
556{
557 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
558 vmolr |= IXGBE_VMOLR_BAM;
559 if (aupe)
560 vmolr |= IXGBE_VMOLR_AUPE;
561 else
562 vmolr &= ~IXGBE_VMOLR_AUPE;
563 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
564}
565
566static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
567{
568 struct ixgbe_hw *hw = &adapter->hw;
569
570 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
571}
572
573static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
574{
575 struct ixgbe_hw *hw = &adapter->hw;
576 u32 vlvfb_mask, pool_mask, i;
577
578 /* create mask for VF and other pools */
579 pool_mask = ~BIT(VMDQ_P(0) % 32);
580 vlvfb_mask = BIT(vf % 32);
581
582 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
583 for (i = IXGBE_VLVF_ENTRIES; i--;) {
584 u32 bits[2], vlvfb, vid, vfta, vlvf;
585 u32 word = i * 2 + vf / 32;
586 u32 mask;
587
588 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
589
590 /* if our bit isn't set we can skip it */
591 if (!(vlvfb & vlvfb_mask))
592 continue;
593
594 /* clear our bit from vlvfb */
595 vlvfb ^= vlvfb_mask;
596
597 /* create 64b mask to chedk to see if we should clear VLVF */
598 bits[word % 2] = vlvfb;
599 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
600
601 /* if other pools are present, just remove ourselves */
602 if (bits[(VMDQ_P(0) / 32) ^ 1] ||
603 (bits[VMDQ_P(0) / 32] & pool_mask))
604 goto update_vlvfb;
605
606 /* if PF is present, leave VFTA */
607 if (bits[0] || bits[1])
608 goto update_vlvf;
609
610 /* if we cannot determine VLAN just remove ourselves */
611 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
612 if (!vlvf)
613 goto update_vlvfb;
614
615 vid = vlvf & VLAN_VID_MASK;
616 mask = BIT(vid % 32);
617
618 /* clear bit from VFTA */
619 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
620 if (vfta & mask)
621 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
622update_vlvf:
623 /* clear POOL selection enable */
624 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
625
626 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
627 vlvfb = 0;
628update_vlvfb:
629 /* clear pool bits */
630 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
631 }
632}
633
634static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
635 int vf, int index, unsigned char *mac_addr)
636{
637 struct vf_macvlans *entry;
638 struct list_head *pos;
639 int retval = 0;
640
641 if (index <= 1) {
642 list_for_each(pos, &adapter->vf_mvs.l) {
643 entry = list_entry(pos, struct vf_macvlans, l);
644 if (entry->vf == vf) {
645 entry->vf = -1;
646 entry->free = true;
647 entry->is_macvlan = false;
648 ixgbe_del_mac_filter(adapter,
649 entry->vf_macvlan, vf);
650 }
651 }
652 }
653
654 /*
655 * If index was zero then we were asked to clear the uc list
656 * for the VF. We're done.
657 */
658 if (!index)
659 return 0;
660
661 entry = NULL;
662
663 list_for_each(pos, &adapter->vf_mvs.l) {
664 entry = list_entry(pos, struct vf_macvlans, l);
665 if (entry->free)
666 break;
667 }
668
669 /*
670 * If we traversed the entire list and didn't find a free entry
671 * then we're out of space on the RAR table. Also entry may
672 * be NULL because the original memory allocation for the list
673 * failed, which is not fatal but does mean we can't support
674 * VF requests for MACVLAN because we couldn't allocate
675 * memory for the list management required.
676 */
677 if (!entry || !entry->free)
678 return -ENOSPC;
679
680 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
681 if (retval < 0)
682 return retval;
683
684 entry->free = false;
685 entry->is_macvlan = true;
686 entry->vf = vf;
687 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
688
689 return 0;
690}
691
692static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
693{
694 struct ixgbe_hw *hw = &adapter->hw;
695 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
696 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
697 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
698 u8 num_tcs = adapter->hw_tcs;
699 u32 reg_val;
700 u32 queue;
701
702 /* remove VLAN filters beloning to this VF */
703 ixgbe_clear_vf_vlans(adapter, vf);
704
705 /* add back PF assigned VLAN or VLAN 0 */
706 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
707
708 /* reset offloads to defaults */
709 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
710
711 /* set outgoing tags for VFs */
712 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
713 ixgbe_clear_vmvir(adapter, vf);
714 } else {
715 if (vfinfo->pf_qos || !num_tcs)
716 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
717 vfinfo->pf_qos, vf);
718 else
719 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
720 adapter->default_up, vf);
721
722 if (vfinfo->spoofchk_enabled) {
723 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
724 hw->mac.ops.set_mac_anti_spoofing(hw, true, vf);
725 }
726 }
727
728 /* reset multicast table array for vf */
729 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
730
731 /* clear any ipsec table info */
732 ixgbe_ipsec_vf_clear(adapter, vf);
733
734 /* Flush and reset the mta with the new values */
735 ixgbe_set_rx_mode(adapter->netdev);
736
737 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
738 ixgbe_set_vf_macvlan(adapter, vf, 0, NULL);
739
740 /* reset VF api back to unknown */
741 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
742
743 /* Restart each queue for given VF */
744 for (queue = 0; queue < q_per_pool; queue++) {
745 unsigned int reg_idx = (vf * q_per_pool) + queue;
746
747 reg_val = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(reg_idx));
748
749 /* Re-enabling only configured queues */
750 if (reg_val) {
751 reg_val |= IXGBE_TXDCTL_ENABLE;
752 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
753 reg_val &= ~IXGBE_TXDCTL_ENABLE;
754 IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(reg_idx), reg_val);
755 }
756 }
757
758 IXGBE_WRITE_FLUSH(hw);
759}
760
761static void ixgbe_vf_clear_mbx(struct ixgbe_adapter *adapter, u32 vf)
762{
763 struct ixgbe_hw *hw = &adapter->hw;
764 u32 word;
765
766 /* Clear VF's mailbox memory */
767 for (word = 0; word < IXGBE_VFMAILBOX_SIZE; word++)
768 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf), word, 0);
769
770 IXGBE_WRITE_FLUSH(hw);
771}
772
773static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
774 int vf, unsigned char *mac_addr)
775{
776 s32 retval;
777
778 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
779 retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
780 if (retval >= 0)
781 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr,
782 ETH_ALEN);
783 else
784 eth_zero_addr(adapter->vfinfo[vf].vf_mac_addresses);
785
786 return retval;
787}
788
789int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
790{
791 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
792 unsigned int vfn = (event_mask & 0x3f);
793
794 bool enable = ((event_mask & 0x10000000U) != 0);
795
796 if (enable)
797 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
798
799 return 0;
800}
801
802static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
803 u32 qde)
804{
805 struct ixgbe_hw *hw = &adapter->hw;
806 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
807 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
808 int i;
809
810 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
811 u32 reg;
812
813 /* flush previous write */
814 IXGBE_WRITE_FLUSH(hw);
815
816 /* indicate to hardware that we want to set drop enable */
817 reg = IXGBE_QDE_WRITE | qde;
818 reg |= i << IXGBE_QDE_IDX_SHIFT;
819 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
820 }
821}
822
823static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
824{
825 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
826 struct ixgbe_hw *hw = &adapter->hw;
827 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
828 u32 reg, reg_offset, vf_shift;
829 u32 msgbuf[4] = {0, 0, 0, 0};
830 u8 *addr = (u8 *)(&msgbuf[1]);
831 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
832 int i;
833
834 e_info(probe, "VF Reset msg received from vf %d\n", vf);
835
836 /* reset the filters for the device */
837 ixgbe_vf_reset_event(adapter, vf);
838
839 ixgbe_vf_clear_mbx(adapter, vf);
840
841 /* set vf mac address */
842 if (!is_zero_ether_addr(vf_mac))
843 ixgbe_set_vf_mac(adapter, vf, vf_mac);
844
845 vf_shift = vf % 32;
846 reg_offset = vf / 32;
847
848 /* enable transmit for vf */
849 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
850 reg |= BIT(vf_shift);
851 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
852
853 /* force drop enable for all VF Rx queues */
854 reg = IXGBE_QDE_ENABLE;
855 if (adapter->vfinfo[vf].pf_vlan)
856 reg |= IXGBE_QDE_HIDE_VLAN;
857
858 ixgbe_write_qde(adapter, vf, reg);
859
860 /* enable receive for vf */
861 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
862 reg |= BIT(vf_shift);
863 /*
864 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
865 * For more info take a look at ixgbe_set_vf_lpe
866 */
867 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
868 struct net_device *dev = adapter->netdev;
869 int pf_max_frame = dev->mtu + ETH_HLEN;
870
871#ifdef CONFIG_FCOE
872 if (dev->features & NETIF_F_FCOE_MTU)
873 pf_max_frame = max_t(int, pf_max_frame,
874 IXGBE_FCOE_JUMBO_FRAME_SIZE);
875
876#endif /* CONFIG_FCOE */
877 if (pf_max_frame > ETH_FRAME_LEN)
878 reg &= ~BIT(vf_shift);
879 }
880 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
881
882 /* enable VF mailbox for further messages */
883 adapter->vfinfo[vf].clear_to_send = true;
884
885 /* Enable counting of spoofed packets in the SSVPC register */
886 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
887 reg |= BIT(vf_shift);
888 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
889
890 /*
891 * Reset the VFs TDWBAL and TDWBAH registers
892 * which are not cleared by an FLR
893 */
894 for (i = 0; i < q_per_pool; i++) {
895 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
896 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
897 }
898
899 /* reply to reset with ack and vf mac address */
900 msgbuf[0] = IXGBE_VF_RESET;
901 if (!is_zero_ether_addr(vf_mac) && adapter->vfinfo[vf].pf_set_mac) {
902 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
903 memcpy(addr, vf_mac, ETH_ALEN);
904 } else {
905 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
906 }
907
908 /*
909 * Piggyback the multicast filter type so VF can compute the
910 * correct vectors
911 */
912 msgbuf[3] = hw->mac.mc_filter_type;
913 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
914
915 return 0;
916}
917
918static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
919 u32 *msgbuf, u32 vf)
920{
921 u8 *new_mac = ((u8 *)(&msgbuf[1]));
922
923 if (!is_valid_ether_addr(new_mac)) {
924 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
925 return -1;
926 }
927
928 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
929 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
930 e_warn(drv,
931 "VF %d attempted to override administratively set MAC address\n"
932 "Reload the VF driver to resume operations\n",
933 vf);
934 return -1;
935 }
936
937 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
938}
939
940static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
941 u32 *msgbuf, u32 vf)
942{
943 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
944 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
945 u8 tcs = adapter->hw_tcs;
946
947 if (adapter->vfinfo[vf].pf_vlan || tcs) {
948 e_warn(drv,
949 "VF %d attempted to override administratively set VLAN configuration\n"
950 "Reload the VF driver to resume operations\n",
951 vf);
952 return -1;
953 }
954
955 /* VLAN 0 is a special case, don't allow it to be removed */
956 if (!vid && !add)
957 return 0;
958
959 return ixgbe_set_vf_vlan(adapter, add, vid, vf);
960}
961
962static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
963 u32 *msgbuf, u32 vf)
964{
965 u8 *new_mac = ((u8 *)(&msgbuf[1]));
966 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
967 IXGBE_VT_MSGINFO_SHIFT;
968 int err;
969
970 if (adapter->vfinfo[vf].pf_set_mac && !adapter->vfinfo[vf].trusted &&
971 index > 0) {
972 e_warn(drv,
973 "VF %d requested MACVLAN filter but is administratively denied\n",
974 vf);
975 return -1;
976 }
977
978 /* An non-zero index indicates the VF is setting a filter */
979 if (index) {
980 if (!is_valid_ether_addr(new_mac)) {
981 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
982 return -1;
983 }
984
985 /*
986 * If the VF is allowed to set MAC filters then turn off
987 * anti-spoofing to avoid false positives.
988 */
989 if (adapter->vfinfo[vf].spoofchk_enabled) {
990 struct ixgbe_hw *hw = &adapter->hw;
991
992 hw->mac.ops.set_mac_anti_spoofing(hw, false, vf);
993 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
994 }
995 }
996
997 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
998 if (err == -ENOSPC)
999 e_warn(drv,
1000 "VF %d has requested a MACVLAN filter but there is no space for it\n",
1001 vf);
1002
1003 return err < 0;
1004}
1005
1006static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
1007 u32 *msgbuf, u32 vf)
1008{
1009 int api = msgbuf[1];
1010
1011 switch (api) {
1012 case ixgbe_mbox_api_10:
1013 case ixgbe_mbox_api_11:
1014 case ixgbe_mbox_api_12:
1015 case ixgbe_mbox_api_13:
1016 case ixgbe_mbox_api_14:
1017 adapter->vfinfo[vf].vf_api = api;
1018 return 0;
1019 default:
1020 break;
1021 }
1022
1023 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
1024
1025 return -1;
1026}
1027
1028static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
1029 u32 *msgbuf, u32 vf)
1030{
1031 struct net_device *dev = adapter->netdev;
1032 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1033 unsigned int default_tc = 0;
1034 u8 num_tcs = adapter->hw_tcs;
1035
1036 /* verify the PF is supporting the correct APIs */
1037 switch (adapter->vfinfo[vf].vf_api) {
1038 case ixgbe_mbox_api_20:
1039 case ixgbe_mbox_api_11:
1040 case ixgbe_mbox_api_12:
1041 case ixgbe_mbox_api_13:
1042 case ixgbe_mbox_api_14:
1043 break;
1044 default:
1045 return -1;
1046 }
1047
1048 /* only allow 1 Tx queue for bandwidth limiting */
1049 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1050 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1051
1052 /* if TCs > 1 determine which TC belongs to default user priority */
1053 if (num_tcs > 1)
1054 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1055
1056 /* notify VF of need for VLAN tag stripping, and correct queue */
1057 if (num_tcs)
1058 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1059 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1060 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1061 else
1062 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1063
1064 /* notify VF of default queue */
1065 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1066
1067 return 0;
1068}
1069
1070static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1071{
1072 u32 i, j;
1073 u32 *out_buf = &msgbuf[1];
1074 const u8 *reta = adapter->rss_indir_tbl;
1075 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1076
1077 /* Check if operation is permitted */
1078 if (!adapter->vfinfo[vf].rss_query_enabled)
1079 return -EPERM;
1080
1081 /* verify the PF is supporting the correct API */
1082 switch (adapter->vfinfo[vf].vf_api) {
1083 case ixgbe_mbox_api_14:
1084 case ixgbe_mbox_api_13:
1085 case ixgbe_mbox_api_12:
1086 break;
1087 default:
1088 return -EOPNOTSUPP;
1089 }
1090
1091 /* This mailbox command is supported (required) only for 82599 and x540
1092 * VFs which support up to 4 RSS queues. Therefore we will compress the
1093 * RETA by saving only 2 bits from each entry. This way we will be able
1094 * to transfer the whole RETA in a single mailbox operation.
1095 */
1096 for (i = 0; i < reta_size / 16; i++) {
1097 out_buf[i] = 0;
1098 for (j = 0; j < 16; j++)
1099 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1100 }
1101
1102 return 0;
1103}
1104
1105static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1106 u32 *msgbuf, u32 vf)
1107{
1108 u32 *rss_key = &msgbuf[1];
1109
1110 /* Check if the operation is permitted */
1111 if (!adapter->vfinfo[vf].rss_query_enabled)
1112 return -EPERM;
1113
1114 /* verify the PF is supporting the correct API */
1115 switch (adapter->vfinfo[vf].vf_api) {
1116 case ixgbe_mbox_api_14:
1117 case ixgbe_mbox_api_13:
1118 case ixgbe_mbox_api_12:
1119 break;
1120 default:
1121 return -EOPNOTSUPP;
1122 }
1123
1124 memcpy(rss_key, adapter->rss_key, IXGBE_RSS_KEY_SIZE);
1125
1126 return 0;
1127}
1128
1129static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1130 u32 *msgbuf, u32 vf)
1131{
1132 struct ixgbe_hw *hw = &adapter->hw;
1133 int xcast_mode = msgbuf[1];
1134 u32 vmolr, fctrl, disable, enable;
1135
1136 /* verify the PF is supporting the correct APIs */
1137 switch (adapter->vfinfo[vf].vf_api) {
1138 case ixgbe_mbox_api_12:
1139 /* promisc introduced in 1.3 version */
1140 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
1141 return -EOPNOTSUPP;
1142 fallthrough;
1143 case ixgbe_mbox_api_13:
1144 case ixgbe_mbox_api_14:
1145 break;
1146 default:
1147 return -EOPNOTSUPP;
1148 }
1149
1150 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1151 !adapter->vfinfo[vf].trusted) {
1152 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1153 }
1154
1155 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1156 goto out;
1157
1158 switch (xcast_mode) {
1159 case IXGBEVF_XCAST_MODE_NONE:
1160 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1161 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1162 enable = 0;
1163 break;
1164 case IXGBEVF_XCAST_MODE_MULTI:
1165 disable = IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1166 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1167 break;
1168 case IXGBEVF_XCAST_MODE_ALLMULTI:
1169 disable = IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1170 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1171 break;
1172 case IXGBEVF_XCAST_MODE_PROMISC:
1173 if (hw->mac.type <= ixgbe_mac_82599EB)
1174 return -EOPNOTSUPP;
1175
1176 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1177 if (!(fctrl & IXGBE_FCTRL_UPE)) {
1178 /* VF promisc requires PF in promisc */
1179 e_warn(drv,
1180 "Enabling VF promisc requires PF in promisc\n");
1181 return -EPERM;
1182 }
1183
1184 disable = 0;
1185 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE |
1186 IXGBE_VMOLR_MPE | IXGBE_VMOLR_UPE | IXGBE_VMOLR_VPE;
1187 break;
1188 default:
1189 return -EOPNOTSUPP;
1190 }
1191
1192 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1193 vmolr &= ~disable;
1194 vmolr |= enable;
1195 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1196
1197 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1198
1199out:
1200 msgbuf[1] = xcast_mode;
1201
1202 return 0;
1203}
1204
1205static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1206{
1207 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1208 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1209 struct ixgbe_hw *hw = &adapter->hw;
1210 s32 retval;
1211
1212 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1213
1214 if (retval) {
1215 pr_err("Error receiving message from VF\n");
1216 return retval;
1217 }
1218
1219 /* this is a message we already processed, do nothing */
1220 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1221 return 0;
1222
1223 /* flush the ack before we write any messages back */
1224 IXGBE_WRITE_FLUSH(hw);
1225
1226 if (msgbuf[0] == IXGBE_VF_RESET)
1227 return ixgbe_vf_reset_msg(adapter, vf);
1228
1229 /*
1230 * until the vf completes a virtual function reset it should not be
1231 * allowed to start any configuration.
1232 */
1233 if (!adapter->vfinfo[vf].clear_to_send) {
1234 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1235 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1236 return 0;
1237 }
1238
1239 switch ((msgbuf[0] & 0xFFFF)) {
1240 case IXGBE_VF_SET_MAC_ADDR:
1241 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1242 break;
1243 case IXGBE_VF_SET_MULTICAST:
1244 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1245 break;
1246 case IXGBE_VF_SET_VLAN:
1247 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1248 break;
1249 case IXGBE_VF_SET_LPE:
1250 retval = ixgbe_set_vf_lpe(adapter, msgbuf[1], vf);
1251 break;
1252 case IXGBE_VF_SET_MACVLAN:
1253 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1254 break;
1255 case IXGBE_VF_API_NEGOTIATE:
1256 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1257 break;
1258 case IXGBE_VF_GET_QUEUES:
1259 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1260 break;
1261 case IXGBE_VF_GET_RETA:
1262 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1263 break;
1264 case IXGBE_VF_GET_RSS_KEY:
1265 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1266 break;
1267 case IXGBE_VF_UPDATE_XCAST_MODE:
1268 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1269 break;
1270 case IXGBE_VF_IPSEC_ADD:
1271 retval = ixgbe_ipsec_vf_add_sa(adapter, msgbuf, vf);
1272 break;
1273 case IXGBE_VF_IPSEC_DEL:
1274 retval = ixgbe_ipsec_vf_del_sa(adapter, msgbuf, vf);
1275 break;
1276 default:
1277 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1278 retval = IXGBE_ERR_MBX;
1279 break;
1280 }
1281
1282 /* notify the VF of the results of what it sent us */
1283 if (retval)
1284 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1285 else
1286 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1287
1288 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1289
1290 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1291
1292 return retval;
1293}
1294
1295static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1296{
1297 struct ixgbe_hw *hw = &adapter->hw;
1298 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1299
1300 /* if device isn't clear to send it shouldn't be reading either */
1301 if (!adapter->vfinfo[vf].clear_to_send)
1302 ixgbe_write_mbx(hw, &msg, 1, vf);
1303}
1304
1305void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1306{
1307 struct ixgbe_hw *hw = &adapter->hw;
1308 u32 vf;
1309
1310 for (vf = 0; vf < adapter->num_vfs; vf++) {
1311 /* process any reset requests */
1312 if (!ixgbe_check_for_rst(hw, vf))
1313 ixgbe_vf_reset_event(adapter, vf);
1314
1315 /* process any messages pending */
1316 if (!ixgbe_check_for_msg(hw, vf))
1317 ixgbe_rcv_msg_from_vf(adapter, vf);
1318
1319 /* process any acks */
1320 if (!ixgbe_check_for_ack(hw, vf))
1321 ixgbe_rcv_ack_from_vf(adapter, vf);
1322 }
1323}
1324
1325void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1326{
1327 struct ixgbe_hw *hw = &adapter->hw;
1328
1329 /* disable transmit and receive for all vfs */
1330 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1331 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1332
1333 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1334 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1335}
1336
1337static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1338{
1339 struct ixgbe_hw *hw = &adapter->hw;
1340 u32 ping;
1341
1342 ping = IXGBE_PF_CONTROL_MSG;
1343 if (adapter->vfinfo[vf].clear_to_send)
1344 ping |= IXGBE_VT_MSGTYPE_CTS;
1345 ixgbe_write_mbx(hw, &ping, 1, vf);
1346}
1347
1348void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1349{
1350 struct ixgbe_hw *hw = &adapter->hw;
1351 u32 ping;
1352 int i;
1353
1354 for (i = 0 ; i < adapter->num_vfs; i++) {
1355 ping = IXGBE_PF_CONTROL_MSG;
1356 if (adapter->vfinfo[i].clear_to_send)
1357 ping |= IXGBE_VT_MSGTYPE_CTS;
1358 ixgbe_write_mbx(hw, &ping, 1, i);
1359 }
1360}
1361
1362int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1363{
1364 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1365 s32 retval;
1366
1367 if (vf >= adapter->num_vfs)
1368 return -EINVAL;
1369
1370 if (is_valid_ether_addr(mac)) {
1371 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
1372 mac, vf);
1373 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
1374
1375 retval = ixgbe_set_vf_mac(adapter, vf, mac);
1376 if (retval >= 0) {
1377 adapter->vfinfo[vf].pf_set_mac = true;
1378
1379 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1380 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
1381 dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
1382 }
1383 } else {
1384 dev_warn(&adapter->pdev->dev, "The VF MAC address was NOT set due to invalid or duplicate MAC address.\n");
1385 }
1386 } else if (is_zero_ether_addr(mac)) {
1387 unsigned char *vf_mac_addr =
1388 adapter->vfinfo[vf].vf_mac_addresses;
1389
1390 /* nothing to do */
1391 if (is_zero_ether_addr(vf_mac_addr))
1392 return 0;
1393
1394 dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
1395
1396 retval = ixgbe_del_mac_filter(adapter, vf_mac_addr, vf);
1397 if (retval >= 0) {
1398 adapter->vfinfo[vf].pf_set_mac = false;
1399 memcpy(vf_mac_addr, mac, ETH_ALEN);
1400 } else {
1401 dev_warn(&adapter->pdev->dev, "Could NOT remove the VF MAC address.\n");
1402 }
1403 } else {
1404 retval = -EINVAL;
1405 }
1406
1407 return retval;
1408}
1409
1410static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1411 u16 vlan, u8 qos)
1412{
1413 struct ixgbe_hw *hw = &adapter->hw;
1414 int err;
1415
1416 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1417 if (err)
1418 goto out;
1419
1420 /* Revoke tagless access via VLAN 0 */
1421 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1422
1423 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1424 ixgbe_set_vmolr(hw, vf, false);
1425
1426 /* enable hide vlan on X550 */
1427 if (hw->mac.type >= ixgbe_mac_X550)
1428 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1429 IXGBE_QDE_HIDE_VLAN);
1430
1431 adapter->vfinfo[vf].pf_vlan = vlan;
1432 adapter->vfinfo[vf].pf_qos = qos;
1433 dev_info(&adapter->pdev->dev,
1434 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1435 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1436 dev_warn(&adapter->pdev->dev,
1437 "The VF VLAN has been set, but the PF device is not up.\n");
1438 dev_warn(&adapter->pdev->dev,
1439 "Bring the PF device up before attempting to use the VF device.\n");
1440 }
1441
1442out:
1443 return err;
1444}
1445
1446static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1447{
1448 struct ixgbe_hw *hw = &adapter->hw;
1449 int err;
1450
1451 err = ixgbe_set_vf_vlan(adapter, false,
1452 adapter->vfinfo[vf].pf_vlan, vf);
1453 /* Restore tagless access via VLAN 0 */
1454 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1455 ixgbe_clear_vmvir(adapter, vf);
1456 ixgbe_set_vmolr(hw, vf, true);
1457
1458 /* disable hide VLAN on X550 */
1459 if (hw->mac.type >= ixgbe_mac_X550)
1460 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1461
1462 adapter->vfinfo[vf].pf_vlan = 0;
1463 adapter->vfinfo[vf].pf_qos = 0;
1464
1465 return err;
1466}
1467
1468int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
1469 u8 qos, __be16 vlan_proto)
1470{
1471 int err = 0;
1472 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1473
1474 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1475 return -EINVAL;
1476 if (vlan_proto != htons(ETH_P_8021Q))
1477 return -EPROTONOSUPPORT;
1478 if (vlan || qos) {
1479 /* Check if there is already a port VLAN set, if so
1480 * we have to delete the old one first before we
1481 * can set the new one. The usage model had
1482 * previously assumed the user would delete the
1483 * old port VLAN before setting a new one but this
1484 * is not necessarily the case.
1485 */
1486 if (adapter->vfinfo[vf].pf_vlan)
1487 err = ixgbe_disable_port_vlan(adapter, vf);
1488 if (err)
1489 goto out;
1490 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1491 } else {
1492 err = ixgbe_disable_port_vlan(adapter, vf);
1493 }
1494
1495out:
1496 return err;
1497}
1498
1499int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1500{
1501 switch (adapter->link_speed) {
1502 case IXGBE_LINK_SPEED_100_FULL:
1503 return 100;
1504 case IXGBE_LINK_SPEED_1GB_FULL:
1505 return 1000;
1506 case IXGBE_LINK_SPEED_10GB_FULL:
1507 return 10000;
1508 default:
1509 return 0;
1510 }
1511}
1512
1513static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1514{
1515 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1516 struct ixgbe_hw *hw = &adapter->hw;
1517 u32 bcnrc_val = 0;
1518 u16 queue, queues_per_pool;
1519 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1520
1521 if (tx_rate) {
1522 /* start with base link speed value */
1523 bcnrc_val = adapter->vf_rate_link_speed;
1524
1525 /* Calculate the rate factor values to set */
1526 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1527 bcnrc_val /= tx_rate;
1528
1529 /* clear everything but the rate factor */
1530 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1531 IXGBE_RTTBCNRC_RF_DEC_MASK;
1532
1533 /* enable the rate scheduler */
1534 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1535 }
1536
1537 /*
1538 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1539 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1540 * and 0x004 otherwise.
1541 */
1542 switch (hw->mac.type) {
1543 case ixgbe_mac_82599EB:
1544 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1545 break;
1546 case ixgbe_mac_X540:
1547 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1548 break;
1549 default:
1550 break;
1551 }
1552
1553 /* determine how many queues per pool based on VMDq mask */
1554 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1555
1556 /* write value for all Tx queues belonging to VF */
1557 for (queue = 0; queue < queues_per_pool; queue++) {
1558 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1559
1560 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1561 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1562 }
1563}
1564
1565void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1566{
1567 int i;
1568
1569 /* VF Tx rate limit was not set */
1570 if (!adapter->vf_rate_link_speed)
1571 return;
1572
1573 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1574 adapter->vf_rate_link_speed = 0;
1575 dev_info(&adapter->pdev->dev,
1576 "Link speed has been changed. VF Transmit rate is disabled\n");
1577 }
1578
1579 for (i = 0; i < adapter->num_vfs; i++) {
1580 if (!adapter->vf_rate_link_speed)
1581 adapter->vfinfo[i].tx_rate = 0;
1582
1583 ixgbe_set_vf_rate_limit(adapter, i);
1584 }
1585}
1586
1587int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1588 int max_tx_rate)
1589{
1590 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1591 int link_speed;
1592
1593 /* verify VF is active */
1594 if (vf >= adapter->num_vfs)
1595 return -EINVAL;
1596
1597 /* verify link is up */
1598 if (!adapter->link_up)
1599 return -EINVAL;
1600
1601 /* verify we are linked at 10Gbps */
1602 link_speed = ixgbe_link_mbps(adapter);
1603 if (link_speed != 10000)
1604 return -EINVAL;
1605
1606 if (min_tx_rate)
1607 return -EINVAL;
1608
1609 /* rate limit cannot be less than 10Mbs or greater than link speed */
1610 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1611 return -EINVAL;
1612
1613 /* store values */
1614 adapter->vf_rate_link_speed = link_speed;
1615 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1616
1617 /* update hardware configuration */
1618 ixgbe_set_vf_rate_limit(adapter, vf);
1619
1620 return 0;
1621}
1622
1623int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1624{
1625 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1626 struct ixgbe_hw *hw = &adapter->hw;
1627
1628 if (vf >= adapter->num_vfs)
1629 return -EINVAL;
1630
1631 adapter->vfinfo[vf].spoofchk_enabled = setting;
1632
1633 /* configure MAC spoofing */
1634 hw->mac.ops.set_mac_anti_spoofing(hw, setting, vf);
1635
1636 /* configure VLAN spoofing */
1637 hw->mac.ops.set_vlan_anti_spoofing(hw, setting, vf);
1638
1639 /* Ensure LLDP and FC is set for Ethertype Antispoofing if we will be
1640 * calling set_ethertype_anti_spoofing for each VF in loop below
1641 */
1642 if (hw->mac.ops.set_ethertype_anti_spoofing) {
1643 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_LLDP),
1644 (IXGBE_ETQF_FILTER_EN |
1645 IXGBE_ETQF_TX_ANTISPOOF |
1646 ETH_P_LLDP));
1647
1648 IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FC),
1649 (IXGBE_ETQF_FILTER_EN |
1650 IXGBE_ETQF_TX_ANTISPOOF |
1651 ETH_P_PAUSE));
1652
1653 hw->mac.ops.set_ethertype_anti_spoofing(hw, setting, vf);
1654 }
1655
1656 return 0;
1657}
1658
1659int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1660 bool setting)
1661{
1662 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1663
1664 /* This operation is currently supported only for 82599 and x540
1665 * devices.
1666 */
1667 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1668 adapter->hw.mac.type >= ixgbe_mac_X550)
1669 return -EOPNOTSUPP;
1670
1671 if (vf >= adapter->num_vfs)
1672 return -EINVAL;
1673
1674 adapter->vfinfo[vf].rss_query_enabled = setting;
1675
1676 return 0;
1677}
1678
1679int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1680{
1681 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1682
1683 if (vf >= adapter->num_vfs)
1684 return -EINVAL;
1685
1686 /* nothing to do */
1687 if (adapter->vfinfo[vf].trusted == setting)
1688 return 0;
1689
1690 adapter->vfinfo[vf].trusted = setting;
1691
1692 /* reset VF to reconfigure features */
1693 adapter->vfinfo[vf].clear_to_send = false;
1694 ixgbe_ping_vf(adapter, vf);
1695
1696 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1697
1698 return 0;
1699}
1700
1701int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1702 int vf, struct ifla_vf_info *ivi)
1703{
1704 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1705 if (vf >= adapter->num_vfs)
1706 return -EINVAL;
1707 ivi->vf = vf;
1708 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1709 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1710 ivi->min_tx_rate = 0;
1711 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1712 ivi->qos = adapter->vfinfo[vf].pf_qos;
1713 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1714 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1715 ivi->trusted = adapter->vfinfo[vf].trusted;
1716 return 0;
1717}