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1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2015 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include <linux/types.h>
30#include <linux/module.h>
31#include <linux/pci.h>
32#include <linux/netdevice.h>
33#include <linux/vmalloc.h>
34#include <linux/string.h>
35#include <linux/in.h>
36#include <linux/ip.h>
37#include <linux/tcp.h>
38#include <linux/ipv6.h>
39#include <linux/if_bridge.h>
40#ifdef NETIF_F_HW_VLAN_CTAG_TX
41#include <linux/if_vlan.h>
42#endif
43
44#include "ixgbe.h"
45#include "ixgbe_type.h"
46#include "ixgbe_sriov.h"
47
48#ifdef CONFIG_PCI_IOV
49static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
50{
51 struct ixgbe_hw *hw = &adapter->hw;
52 int num_vf_macvlans, i;
53 struct vf_macvlans *mv_list;
54
55 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
56 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
57
58 /* Enable VMDq flag so device will be set in VM mode */
59 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
60 if (!adapter->ring_feature[RING_F_VMDQ].limit)
61 adapter->ring_feature[RING_F_VMDQ].limit = 1;
62 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
63
64 num_vf_macvlans = hw->mac.num_rar_entries -
65 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
66
67 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
68 sizeof(struct vf_macvlans),
69 GFP_KERNEL);
70 if (mv_list) {
71 /* Initialize list of VF macvlans */
72 INIT_LIST_HEAD(&adapter->vf_mvs.l);
73 for (i = 0; i < num_vf_macvlans; i++) {
74 mv_list->vf = -1;
75 mv_list->free = true;
76 list_add(&mv_list->l, &adapter->vf_mvs.l);
77 mv_list++;
78 }
79 }
80
81 /* Initialize default switching mode VEB */
82 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
83 adapter->bridge_mode = BRIDGE_MODE_VEB;
84
85 /* If call to enable VFs succeeded then allocate memory
86 * for per VF control structures.
87 */
88 adapter->vfinfo =
89 kcalloc(adapter->num_vfs,
90 sizeof(struct vf_data_storage), GFP_KERNEL);
91 if (adapter->vfinfo) {
92 /* limit trafffic classes based on VFs enabled */
93 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
94 (adapter->num_vfs < 16)) {
95 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
96 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
97 } else if (adapter->num_vfs < 32) {
98 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
99 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
100 } else {
101 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
102 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
103 }
104
105 /* Disable RSC when in SR-IOV mode */
106 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
107 IXGBE_FLAG2_RSC_ENABLED);
108
109 for (i = 0; i < adapter->num_vfs; i++) {
110 /* enable spoof checking for all VFs */
111 adapter->vfinfo[i].spoofchk_enabled = true;
112
113 /* We support VF RSS querying only for 82599 and x540
114 * devices at the moment. These devices share RSS
115 * indirection table and RSS hash key with PF therefore
116 * we want to disable the querying by default.
117 */
118 adapter->vfinfo[i].rss_query_enabled = 0;
119
120 /* Untrust all VFs */
121 adapter->vfinfo[i].trusted = false;
122
123 /* set the default xcast mode */
124 adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE;
125 }
126
127 return 0;
128 }
129
130 return -ENOMEM;
131}
132
133/**
134 * ixgbe_get_vfs - Find and take references to all vf devices
135 * @adapter: Pointer to adapter struct
136 */
137static void ixgbe_get_vfs(struct ixgbe_adapter *adapter)
138{
139 struct pci_dev *pdev = adapter->pdev;
140 u16 vendor = pdev->vendor;
141 struct pci_dev *vfdev;
142 int vf = 0;
143 u16 vf_id;
144 int pos;
145
146 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
147 if (!pos)
148 return;
149 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id);
150
151 vfdev = pci_get_device(vendor, vf_id, NULL);
152 for (; vfdev; vfdev = pci_get_device(vendor, vf_id, vfdev)) {
153 if (!vfdev->is_virtfn)
154 continue;
155 if (vfdev->physfn != pdev)
156 continue;
157 if (vf >= adapter->num_vfs)
158 continue;
159 pci_dev_get(vfdev);
160 adapter->vfinfo[vf].vfdev = vfdev;
161 ++vf;
162 }
163}
164
165/* Note this function is called when the user wants to enable SR-IOV
166 * VFs using the now deprecated module parameter
167 */
168void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
169{
170 int pre_existing_vfs = 0;
171
172 pre_existing_vfs = pci_num_vf(adapter->pdev);
173 if (!pre_existing_vfs && !adapter->num_vfs)
174 return;
175
176 /* If there are pre-existing VFs then we have to force
177 * use of that many - over ride any module parameter value.
178 * This may result from the user unloading the PF driver
179 * while VFs were assigned to guest VMs or because the VFs
180 * have been created via the new PCI SR-IOV sysfs interface.
181 */
182 if (pre_existing_vfs) {
183 adapter->num_vfs = pre_existing_vfs;
184 dev_warn(&adapter->pdev->dev,
185 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
186 } else {
187 int err;
188 /*
189 * The 82599 supports up to 64 VFs per physical function
190 * but this implementation limits allocation to 63 so that
191 * basic networking resources are still available to the
192 * physical function. If the user requests greater than
193 * 63 VFs then it is an error - reset to default of zero.
194 */
195 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
196
197 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
198 if (err) {
199 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
200 adapter->num_vfs = 0;
201 return;
202 }
203 }
204
205 if (!__ixgbe_enable_sriov(adapter)) {
206 ixgbe_get_vfs(adapter);
207 return;
208 }
209
210 /* If we have gotten to this point then there is no memory available
211 * to manage the VF devices - print message and bail.
212 */
213 e_err(probe, "Unable to allocate memory for VF Data Storage - "
214 "SRIOV disabled\n");
215 ixgbe_disable_sriov(adapter);
216}
217
218#endif /* #ifdef CONFIG_PCI_IOV */
219int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
220{
221 unsigned int num_vfs = adapter->num_vfs, vf;
222 struct ixgbe_hw *hw = &adapter->hw;
223 u32 gpie;
224 u32 vmdctl;
225 int rss;
226
227 /* set num VFs to 0 to prevent access to vfinfo */
228 adapter->num_vfs = 0;
229
230 /* put the reference to all of the vf devices */
231 for (vf = 0; vf < num_vfs; ++vf) {
232 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
233
234 if (!vfdev)
235 continue;
236 adapter->vfinfo[vf].vfdev = NULL;
237 pci_dev_put(vfdev);
238 }
239
240 /* free VF control structures */
241 kfree(adapter->vfinfo);
242 adapter->vfinfo = NULL;
243
244 /* free macvlan list */
245 kfree(adapter->mv_list);
246 adapter->mv_list = NULL;
247
248 /* if SR-IOV is already disabled then there is nothing to do */
249 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
250 return 0;
251
252#ifdef CONFIG_PCI_IOV
253 /*
254 * If our VFs are assigned we cannot shut down SR-IOV
255 * without causing issues, so just leave the hardware
256 * available but disabled
257 */
258 if (pci_vfs_assigned(adapter->pdev)) {
259 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
260 return -EPERM;
261 }
262 /* disable iov and allow time for transactions to clear */
263 pci_disable_sriov(adapter->pdev);
264#endif
265
266 /* turn off device IOV mode */
267 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
268 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
269 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
270 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
271
272 /* set default pool back to 0 */
273 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
274 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
275 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
276 IXGBE_WRITE_FLUSH(hw);
277
278 /* Disable VMDq flag so device will be set in VM mode */
279 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
280 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
281 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
282 rss = min_t(int, ixgbe_max_rss_indices(adapter),
283 num_online_cpus());
284 } else {
285 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
286 }
287
288 adapter->ring_feature[RING_F_VMDQ].offset = 0;
289 adapter->ring_feature[RING_F_RSS].limit = rss;
290
291 /* take a breather then clean up driver data */
292 msleep(100);
293 return 0;
294}
295
296static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
297{
298#ifdef CONFIG_PCI_IOV
299 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
300 int err = 0;
301 int i;
302 int pre_existing_vfs = pci_num_vf(dev);
303
304 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
305 err = ixgbe_disable_sriov(adapter);
306 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
307 return num_vfs;
308
309 if (err)
310 return err;
311
312 /* While the SR-IOV capability structure reports total VFs to be 64,
313 * we have to limit the actual number allocated based on two factors.
314 * First, we reserve some transmit/receive resources for the PF.
315 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
316 * account for this, so that we don't accidentally allocate more VFs
317 * than we have available pools. The PCI bus driver already checks for
318 * other values out of range.
319 */
320 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
321 return -EPERM;
322
323 adapter->num_vfs = num_vfs;
324
325 err = __ixgbe_enable_sriov(adapter);
326 if (err)
327 return err;
328
329 for (i = 0; i < adapter->num_vfs; i++)
330 ixgbe_vf_configuration(dev, (i | 0x10000000));
331
332 err = pci_enable_sriov(dev, num_vfs);
333 if (err) {
334 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
335 return err;
336 }
337 ixgbe_get_vfs(adapter);
338 ixgbe_sriov_reinit(adapter);
339
340 return num_vfs;
341#else
342 return 0;
343#endif
344}
345
346static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
347{
348 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
349 int err;
350#ifdef CONFIG_PCI_IOV
351 u32 current_flags = adapter->flags;
352#endif
353
354 err = ixgbe_disable_sriov(adapter);
355
356 /* Only reinit if no error and state changed */
357#ifdef CONFIG_PCI_IOV
358 if (!err && current_flags != adapter->flags)
359 ixgbe_sriov_reinit(adapter);
360#endif
361
362 return err;
363}
364
365int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
366{
367 if (num_vfs == 0)
368 return ixgbe_pci_sriov_disable(dev);
369 else
370 return ixgbe_pci_sriov_enable(dev, num_vfs);
371}
372
373static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
374 u32 *msgbuf, u32 vf)
375{
376 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
377 >> IXGBE_VT_MSGINFO_SHIFT;
378 u16 *hash_list = (u16 *)&msgbuf[1];
379 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
380 struct ixgbe_hw *hw = &adapter->hw;
381 int i;
382 u32 vector_bit;
383 u32 vector_reg;
384 u32 mta_reg;
385 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
386
387 /* only so many hash values supported */
388 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
389
390 /*
391 * salt away the number of multi cast addresses assigned
392 * to this VF for later use to restore when the PF multi cast
393 * list changes
394 */
395 vfinfo->num_vf_mc_hashes = entries;
396
397 /*
398 * VFs are limited to using the MTA hash table for their multicast
399 * addresses
400 */
401 for (i = 0; i < entries; i++) {
402 vfinfo->vf_mc_hashes[i] = hash_list[i];
403 }
404
405 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
406 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
407 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
408 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
409 mta_reg |= (1 << vector_bit);
410 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
411 }
412 vmolr |= IXGBE_VMOLR_ROMPE;
413 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
414
415 return 0;
416}
417
418#ifdef CONFIG_PCI_IOV
419void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
420{
421 struct ixgbe_hw *hw = &adapter->hw;
422 struct vf_data_storage *vfinfo;
423 int i, j;
424 u32 vector_bit;
425 u32 vector_reg;
426 u32 mta_reg;
427
428 for (i = 0; i < adapter->num_vfs; i++) {
429 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
430 vfinfo = &adapter->vfinfo[i];
431 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
432 hw->addr_ctrl.mta_in_use++;
433 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
434 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
435 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
436 mta_reg |= (1 << vector_bit);
437 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
438 }
439
440 if (vfinfo->num_vf_mc_hashes)
441 vmolr |= IXGBE_VMOLR_ROMPE;
442 else
443 vmolr &= ~IXGBE_VMOLR_ROMPE;
444 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
445 }
446
447 /* Restore any VF macvlans */
448 ixgbe_full_sync_mac_table(adapter);
449}
450#endif
451
452static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
453 u32 vf)
454{
455 struct ixgbe_hw *hw = &adapter->hw;
456 int err;
457
458 /* If VLAN overlaps with one the PF is currently monitoring make
459 * sure that we are able to allocate a VLVF entry. This may be
460 * redundant but it guarantees PF will maintain visibility to
461 * the VLAN.
462 */
463 if (add && test_bit(vid, adapter->active_vlans)) {
464 err = hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), true, false);
465 if (err)
466 return err;
467 }
468
469 err = hw->mac.ops.set_vfta(hw, vid, vf, !!add, false);
470
471 if (add && !err)
472 return err;
473
474 /* If we failed to add the VF VLAN or we are removing the VF VLAN
475 * we may need to drop the PF pool bit in order to allow us to free
476 * up the VLVF resources.
477 */
478 if (test_bit(vid, adapter->active_vlans) ||
479 (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
480 ixgbe_update_pf_promisc_vlvf(adapter, vid);
481
482 return err;
483}
484
485static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
486{
487 struct ixgbe_hw *hw = &adapter->hw;
488 int max_frame = msgbuf[1];
489 u32 max_frs;
490
491 /*
492 * For 82599EB we have to keep all PFs and VFs operating with
493 * the same max_frame value in order to avoid sending an oversize
494 * frame to a VF. In order to guarantee this is handled correctly
495 * for all cases we have several special exceptions to take into
496 * account before we can enable the VF for receive
497 */
498 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
499 struct net_device *dev = adapter->netdev;
500 int pf_max_frame = dev->mtu + ETH_HLEN;
501 u32 reg_offset, vf_shift, vfre;
502 s32 err = 0;
503
504#ifdef CONFIG_FCOE
505 if (dev->features & NETIF_F_FCOE_MTU)
506 pf_max_frame = max_t(int, pf_max_frame,
507 IXGBE_FCOE_JUMBO_FRAME_SIZE);
508
509#endif /* CONFIG_FCOE */
510 switch (adapter->vfinfo[vf].vf_api) {
511 case ixgbe_mbox_api_11:
512 case ixgbe_mbox_api_12:
513 /*
514 * Version 1.1 supports jumbo frames on VFs if PF has
515 * jumbo frames enabled which means legacy VFs are
516 * disabled
517 */
518 if (pf_max_frame > ETH_FRAME_LEN)
519 break;
520 default:
521 /*
522 * If the PF or VF are running w/ jumbo frames enabled
523 * we need to shut down the VF Rx path as we cannot
524 * support jumbo frames on legacy VFs
525 */
526 if ((pf_max_frame > ETH_FRAME_LEN) ||
527 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
528 err = -EINVAL;
529 break;
530 }
531
532 /* determine VF receive enable location */
533 vf_shift = vf % 32;
534 reg_offset = vf / 32;
535
536 /* enable or disable receive depending on error */
537 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
538 if (err)
539 vfre &= ~(1 << vf_shift);
540 else
541 vfre |= 1 << vf_shift;
542 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
543
544 if (err) {
545 e_err(drv, "VF max_frame %d out of range\n", max_frame);
546 return err;
547 }
548 }
549
550 /* MTU < 68 is an error and causes problems on some kernels */
551 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
552 e_err(drv, "VF max_frame %d out of range\n", max_frame);
553 return -EINVAL;
554 }
555
556 /* pull current max frame size from hardware */
557 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
558 max_frs &= IXGBE_MHADD_MFS_MASK;
559 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
560
561 if (max_frs < max_frame) {
562 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
563 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
564 }
565
566 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
567
568 return 0;
569}
570
571static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
572{
573 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
574 vmolr |= IXGBE_VMOLR_BAM;
575 if (aupe)
576 vmolr |= IXGBE_VMOLR_AUPE;
577 else
578 vmolr &= ~IXGBE_VMOLR_AUPE;
579 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
580}
581
582static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
583{
584 struct ixgbe_hw *hw = &adapter->hw;
585
586 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
587}
588
589static void ixgbe_clear_vf_vlans(struct ixgbe_adapter *adapter, u32 vf)
590{
591 struct ixgbe_hw *hw = &adapter->hw;
592 u32 i;
593
594 /* post increment loop, covers VLVF_ENTRIES - 1 to 0 */
595 for (i = IXGBE_VLVF_ENTRIES; i--;) {
596 u32 bits[2], vlvfb, vid, vfta, vlvf;
597 u32 word = i * 2 + vf / 32;
598 u32 mask = 1 << (vf % 32);
599
600 vlvfb = IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
601
602 /* if our bit isn't set we can skip it */
603 if (!(vlvfb & mask))
604 continue;
605
606 /* clear our bit from vlvfb */
607 vlvfb ^= mask;
608
609 /* create 64b mask to chedk to see if we should clear VLVF */
610 bits[word % 2] = vlvfb;
611 bits[~word % 2] = IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1));
612
613 /* if promisc is enabled, PF will be present, leave VFTA */
614 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) {
615 bits[VMDQ_P(0) / 32] &= ~(1 << (VMDQ_P(0) % 32));
616
617 if (bits[0] || bits[1])
618 goto update_vlvfb;
619 goto update_vlvf;
620 }
621
622 /* if other pools are present, just remove ourselves */
623 if (bits[0] || bits[1])
624 goto update_vlvfb;
625
626 /* if we cannot determine VLAN just remove ourselves */
627 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
628 if (!vlvf)
629 goto update_vlvfb;
630
631 vid = vlvf & VLAN_VID_MASK;
632 mask = 1 << (vid % 32);
633
634 /* clear bit from VFTA */
635 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(vid / 32));
636 if (vfta & mask)
637 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vid / 32), vfta ^ mask);
638update_vlvf:
639 /* clear POOL selection enable */
640 IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), 0);
641update_vlvfb:
642 /* clear pool bits */
643 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), vlvfb);
644 }
645}
646
647static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
648{
649 struct ixgbe_hw *hw = &adapter->hw;
650 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
651 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
652
653 /* remove VLAN filters beloning to this VF */
654 ixgbe_clear_vf_vlans(adapter, vf);
655
656 /* add back PF assigned VLAN or VLAN 0 */
657 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
658
659 /* reset offloads to defaults */
660 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
661
662 /* set outgoing tags for VFs */
663 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
664 ixgbe_clear_vmvir(adapter, vf);
665 } else {
666 if (vfinfo->pf_qos || !num_tcs)
667 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
668 vfinfo->pf_qos, vf);
669 else
670 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
671 adapter->default_up, vf);
672
673 if (vfinfo->spoofchk_enabled)
674 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
675 }
676
677 /* reset multicast table array for vf */
678 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
679
680 /* Flush and reset the mta with the new values */
681 ixgbe_set_rx_mode(adapter->netdev);
682
683 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
684
685 /* reset VF api back to unknown */
686 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
687}
688
689static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
690 int vf, unsigned char *mac_addr)
691{
692 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
693 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
694 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
695
696 return 0;
697}
698
699static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
700 int vf, int index, unsigned char *mac_addr)
701{
702 struct list_head *pos;
703 struct vf_macvlans *entry;
704
705 if (index <= 1) {
706 list_for_each(pos, &adapter->vf_mvs.l) {
707 entry = list_entry(pos, struct vf_macvlans, l);
708 if (entry->vf == vf) {
709 entry->vf = -1;
710 entry->free = true;
711 entry->is_macvlan = false;
712 ixgbe_del_mac_filter(adapter,
713 entry->vf_macvlan, vf);
714 }
715 }
716 }
717
718 /*
719 * If index was zero then we were asked to clear the uc list
720 * for the VF. We're done.
721 */
722 if (!index)
723 return 0;
724
725 entry = NULL;
726
727 list_for_each(pos, &adapter->vf_mvs.l) {
728 entry = list_entry(pos, struct vf_macvlans, l);
729 if (entry->free)
730 break;
731 }
732
733 /*
734 * If we traversed the entire list and didn't find a free entry
735 * then we're out of space on the RAR table. Also entry may
736 * be NULL because the original memory allocation for the list
737 * failed, which is not fatal but does mean we can't support
738 * VF requests for MACVLAN because we couldn't allocate
739 * memory for the list management required.
740 */
741 if (!entry || !entry->free)
742 return -ENOSPC;
743
744 entry->free = false;
745 entry->is_macvlan = true;
746 entry->vf = vf;
747 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
748
749 ixgbe_add_mac_filter(adapter, mac_addr, vf);
750
751 return 0;
752}
753
754int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
755{
756 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
757 unsigned int vfn = (event_mask & 0x3f);
758
759 bool enable = ((event_mask & 0x10000000U) != 0);
760
761 if (enable)
762 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
763
764 return 0;
765}
766
767static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
768 u32 qde)
769{
770 struct ixgbe_hw *hw = &adapter->hw;
771 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
772 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
773 int i;
774
775 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
776 u32 reg;
777
778 /* flush previous write */
779 IXGBE_WRITE_FLUSH(hw);
780
781 /* indicate to hardware that we want to set drop enable */
782 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
783 reg |= i << IXGBE_QDE_IDX_SHIFT;
784 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
785 }
786}
787
788static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
789{
790 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
791 struct ixgbe_hw *hw = &adapter->hw;
792 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
793 u32 reg, reg_offset, vf_shift;
794 u32 msgbuf[4] = {0, 0, 0, 0};
795 u8 *addr = (u8 *)(&msgbuf[1]);
796 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
797 int i;
798
799 e_info(probe, "VF Reset msg received from vf %d\n", vf);
800
801 /* reset the filters for the device */
802 ixgbe_vf_reset_event(adapter, vf);
803
804 /* set vf mac address */
805 if (!is_zero_ether_addr(vf_mac))
806 ixgbe_set_vf_mac(adapter, vf, vf_mac);
807
808 vf_shift = vf % 32;
809 reg_offset = vf / 32;
810
811 /* enable transmit for vf */
812 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
813 reg |= 1 << vf_shift;
814 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
815
816 /* force drop enable for all VF Rx queues */
817 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
818
819 /* enable receive for vf */
820 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
821 reg |= 1 << vf_shift;
822 /*
823 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
824 * For more info take a look at ixgbe_set_vf_lpe
825 */
826 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
827 struct net_device *dev = adapter->netdev;
828 int pf_max_frame = dev->mtu + ETH_HLEN;
829
830#ifdef CONFIG_FCOE
831 if (dev->features & NETIF_F_FCOE_MTU)
832 pf_max_frame = max_t(int, pf_max_frame,
833 IXGBE_FCOE_JUMBO_FRAME_SIZE);
834
835#endif /* CONFIG_FCOE */
836 if (pf_max_frame > ETH_FRAME_LEN)
837 reg &= ~(1 << vf_shift);
838 }
839 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
840
841 /* enable VF mailbox for further messages */
842 adapter->vfinfo[vf].clear_to_send = true;
843
844 /* Enable counting of spoofed packets in the SSVPC register */
845 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
846 reg |= (1 << vf_shift);
847 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
848
849 /*
850 * Reset the VFs TDWBAL and TDWBAH registers
851 * which are not cleared by an FLR
852 */
853 for (i = 0; i < q_per_pool; i++) {
854 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
855 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
856 }
857
858 /* reply to reset with ack and vf mac address */
859 msgbuf[0] = IXGBE_VF_RESET;
860 if (!is_zero_ether_addr(vf_mac)) {
861 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
862 memcpy(addr, vf_mac, ETH_ALEN);
863 } else {
864 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
865 dev_warn(&adapter->pdev->dev,
866 "VF %d has no MAC address assigned, you may have to assign one manually\n",
867 vf);
868 }
869
870 /*
871 * Piggyback the multicast filter type so VF can compute the
872 * correct vectors
873 */
874 msgbuf[3] = hw->mac.mc_filter_type;
875 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
876
877 return 0;
878}
879
880static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
881 u32 *msgbuf, u32 vf)
882{
883 u8 *new_mac = ((u8 *)(&msgbuf[1]));
884
885 if (!is_valid_ether_addr(new_mac)) {
886 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
887 return -1;
888 }
889
890 if (adapter->vfinfo[vf].pf_set_mac &&
891 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
892 e_warn(drv,
893 "VF %d attempted to override administratively set MAC address\n"
894 "Reload the VF driver to resume operations\n",
895 vf);
896 return -1;
897 }
898
899 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
900}
901
902static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
903 u32 *msgbuf, u32 vf)
904{
905 u32 add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
906 u32 vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
907 u8 tcs = netdev_get_num_tc(adapter->netdev);
908 struct ixgbe_hw *hw = &adapter->hw;
909 int err;
910
911 if (adapter->vfinfo[vf].pf_vlan || tcs) {
912 e_warn(drv,
913 "VF %d attempted to override administratively set VLAN configuration\n"
914 "Reload the VF driver to resume operations\n",
915 vf);
916 return -1;
917 }
918
919 /* VLAN 0 is a special case, don't allow it to be removed */
920 if (!vid && !add)
921 return 0;
922
923 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
924 if (err)
925 return err;
926
927 if (adapter->vfinfo[vf].spoofchk_enabled)
928 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
929
930 if (add)
931 adapter->vfinfo[vf].vlan_count++;
932 else if (adapter->vfinfo[vf].vlan_count)
933 adapter->vfinfo[vf].vlan_count--;
934
935 return 0;
936}
937
938static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
939 u32 *msgbuf, u32 vf)
940{
941 u8 *new_mac = ((u8 *)(&msgbuf[1]));
942 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
943 IXGBE_VT_MSGINFO_SHIFT;
944 int err;
945
946 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
947 e_warn(drv,
948 "VF %d requested MACVLAN filter but is administratively denied\n",
949 vf);
950 return -1;
951 }
952
953 /* An non-zero index indicates the VF is setting a filter */
954 if (index) {
955 if (!is_valid_ether_addr(new_mac)) {
956 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
957 return -1;
958 }
959
960 /*
961 * If the VF is allowed to set MAC filters then turn off
962 * anti-spoofing to avoid false positives.
963 */
964 if (adapter->vfinfo[vf].spoofchk_enabled)
965 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
966 }
967
968 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
969 if (err == -ENOSPC)
970 e_warn(drv,
971 "VF %d has requested a MACVLAN filter but there is no space for it\n",
972 vf);
973
974 return err < 0;
975}
976
977static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
978 u32 *msgbuf, u32 vf)
979{
980 int api = msgbuf[1];
981
982 switch (api) {
983 case ixgbe_mbox_api_10:
984 case ixgbe_mbox_api_11:
985 case ixgbe_mbox_api_12:
986 adapter->vfinfo[vf].vf_api = api;
987 return 0;
988 default:
989 break;
990 }
991
992 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
993
994 return -1;
995}
996
997static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
998 u32 *msgbuf, u32 vf)
999{
1000 struct net_device *dev = adapter->netdev;
1001 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1002 unsigned int default_tc = 0;
1003 u8 num_tcs = netdev_get_num_tc(dev);
1004
1005 /* verify the PF is supporting the correct APIs */
1006 switch (adapter->vfinfo[vf].vf_api) {
1007 case ixgbe_mbox_api_20:
1008 case ixgbe_mbox_api_11:
1009 case ixgbe_mbox_api_12:
1010 break;
1011 default:
1012 return -1;
1013 }
1014
1015 /* only allow 1 Tx queue for bandwidth limiting */
1016 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1017 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
1018
1019 /* if TCs > 1 determine which TC belongs to default user priority */
1020 if (num_tcs > 1)
1021 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
1022
1023 /* notify VF of need for VLAN tag stripping, and correct queue */
1024 if (num_tcs)
1025 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
1026 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
1027 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
1028 else
1029 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
1030
1031 /* notify VF of default queue */
1032 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
1033
1034 return 0;
1035}
1036
1037static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
1038{
1039 u32 i, j;
1040 u32 *out_buf = &msgbuf[1];
1041 const u8 *reta = adapter->rss_indir_tbl;
1042 u32 reta_size = ixgbe_rss_indir_tbl_entries(adapter);
1043
1044 /* Check if operation is permitted */
1045 if (!adapter->vfinfo[vf].rss_query_enabled)
1046 return -EPERM;
1047
1048 /* verify the PF is supporting the correct API */
1049 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1050 return -EOPNOTSUPP;
1051
1052 /* This mailbox command is supported (required) only for 82599 and x540
1053 * VFs which support up to 4 RSS queues. Therefore we will compress the
1054 * RETA by saving only 2 bits from each entry. This way we will be able
1055 * to transfer the whole RETA in a single mailbox operation.
1056 */
1057 for (i = 0; i < reta_size / 16; i++) {
1058 out_buf[i] = 0;
1059 for (j = 0; j < 16; j++)
1060 out_buf[i] |= (u32)(reta[16 * i + j] & 0x3) << (2 * j);
1061 }
1062
1063 return 0;
1064}
1065
1066static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter,
1067 u32 *msgbuf, u32 vf)
1068{
1069 u32 *rss_key = &msgbuf[1];
1070
1071 /* Check if the operation is permitted */
1072 if (!adapter->vfinfo[vf].rss_query_enabled)
1073 return -EPERM;
1074
1075 /* verify the PF is supporting the correct API */
1076 if (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)
1077 return -EOPNOTSUPP;
1078
1079 memcpy(rss_key, adapter->rss_key, sizeof(adapter->rss_key));
1080
1081 return 0;
1082}
1083
1084static int ixgbe_update_vf_xcast_mode(struct ixgbe_adapter *adapter,
1085 u32 *msgbuf, u32 vf)
1086{
1087 struct ixgbe_hw *hw = &adapter->hw;
1088 int xcast_mode = msgbuf[1];
1089 u32 vmolr, disable, enable;
1090
1091 /* verify the PF is supporting the correct APIs */
1092 switch (adapter->vfinfo[vf].vf_api) {
1093 case ixgbe_mbox_api_12:
1094 break;
1095 default:
1096 return -EOPNOTSUPP;
1097 }
1098
1099 if (xcast_mode > IXGBEVF_XCAST_MODE_MULTI &&
1100 !adapter->vfinfo[vf].trusted) {
1101 xcast_mode = IXGBEVF_XCAST_MODE_MULTI;
1102 }
1103
1104 if (adapter->vfinfo[vf].xcast_mode == xcast_mode)
1105 goto out;
1106
1107 switch (xcast_mode) {
1108 case IXGBEVF_XCAST_MODE_NONE:
1109 disable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1110 enable = 0;
1111 break;
1112 case IXGBEVF_XCAST_MODE_MULTI:
1113 disable = IXGBE_VMOLR_MPE;
1114 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE;
1115 break;
1116 case IXGBEVF_XCAST_MODE_ALLMULTI:
1117 disable = 0;
1118 enable = IXGBE_VMOLR_BAM | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_MPE;
1119 break;
1120 default:
1121 return -EOPNOTSUPP;
1122 }
1123
1124 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
1125 vmolr &= ~disable;
1126 vmolr |= enable;
1127 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
1128
1129 adapter->vfinfo[vf].xcast_mode = xcast_mode;
1130
1131out:
1132 msgbuf[1] = xcast_mode;
1133
1134 return 0;
1135}
1136
1137static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1138{
1139 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
1140 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
1141 struct ixgbe_hw *hw = &adapter->hw;
1142 s32 retval;
1143
1144 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
1145
1146 if (retval) {
1147 pr_err("Error receiving message from VF\n");
1148 return retval;
1149 }
1150
1151 /* this is a message we already processed, do nothing */
1152 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
1153 return 0;
1154
1155 /* flush the ack before we write any messages back */
1156 IXGBE_WRITE_FLUSH(hw);
1157
1158 if (msgbuf[0] == IXGBE_VF_RESET)
1159 return ixgbe_vf_reset_msg(adapter, vf);
1160
1161 /*
1162 * until the vf completes a virtual function reset it should not be
1163 * allowed to start any configuration.
1164 */
1165 if (!adapter->vfinfo[vf].clear_to_send) {
1166 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1167 ixgbe_write_mbx(hw, msgbuf, 1, vf);
1168 return 0;
1169 }
1170
1171 switch ((msgbuf[0] & 0xFFFF)) {
1172 case IXGBE_VF_SET_MAC_ADDR:
1173 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
1174 break;
1175 case IXGBE_VF_SET_MULTICAST:
1176 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
1177 break;
1178 case IXGBE_VF_SET_VLAN:
1179 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
1180 break;
1181 case IXGBE_VF_SET_LPE:
1182 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
1183 break;
1184 case IXGBE_VF_SET_MACVLAN:
1185 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
1186 break;
1187 case IXGBE_VF_API_NEGOTIATE:
1188 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
1189 break;
1190 case IXGBE_VF_GET_QUEUES:
1191 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
1192 break;
1193 case IXGBE_VF_GET_RETA:
1194 retval = ixgbe_get_vf_reta(adapter, msgbuf, vf);
1195 break;
1196 case IXGBE_VF_GET_RSS_KEY:
1197 retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf);
1198 break;
1199 case IXGBE_VF_UPDATE_XCAST_MODE:
1200 retval = ixgbe_update_vf_xcast_mode(adapter, msgbuf, vf);
1201 break;
1202 default:
1203 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1204 retval = IXGBE_ERR_MBX;
1205 break;
1206 }
1207
1208 /* notify the VF of the results of what it sent us */
1209 if (retval)
1210 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1211 else
1212 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1213
1214 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1215
1216 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1217
1218 return retval;
1219}
1220
1221static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1222{
1223 struct ixgbe_hw *hw = &adapter->hw;
1224 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1225
1226 /* if device isn't clear to send it shouldn't be reading either */
1227 if (!adapter->vfinfo[vf].clear_to_send)
1228 ixgbe_write_mbx(hw, &msg, 1, vf);
1229}
1230
1231void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1232{
1233 struct ixgbe_hw *hw = &adapter->hw;
1234 u32 vf;
1235
1236 for (vf = 0; vf < adapter->num_vfs; vf++) {
1237 /* process any reset requests */
1238 if (!ixgbe_check_for_rst(hw, vf))
1239 ixgbe_vf_reset_event(adapter, vf);
1240
1241 /* process any messages pending */
1242 if (!ixgbe_check_for_msg(hw, vf))
1243 ixgbe_rcv_msg_from_vf(adapter, vf);
1244
1245 /* process any acks */
1246 if (!ixgbe_check_for_ack(hw, vf))
1247 ixgbe_rcv_ack_from_vf(adapter, vf);
1248 }
1249}
1250
1251void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1252{
1253 struct ixgbe_hw *hw = &adapter->hw;
1254
1255 /* disable transmit and receive for all vfs */
1256 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1257 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1258
1259 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1260 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1261}
1262
1263static inline void ixgbe_ping_vf(struct ixgbe_adapter *adapter, int vf)
1264{
1265 struct ixgbe_hw *hw = &adapter->hw;
1266 u32 ping;
1267
1268 ping = IXGBE_PF_CONTROL_MSG;
1269 if (adapter->vfinfo[vf].clear_to_send)
1270 ping |= IXGBE_VT_MSGTYPE_CTS;
1271 ixgbe_write_mbx(hw, &ping, 1, vf);
1272}
1273
1274void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1275{
1276 struct ixgbe_hw *hw = &adapter->hw;
1277 u32 ping;
1278 int i;
1279
1280 for (i = 0 ; i < adapter->num_vfs; i++) {
1281 ping = IXGBE_PF_CONTROL_MSG;
1282 if (adapter->vfinfo[i].clear_to_send)
1283 ping |= IXGBE_VT_MSGTYPE_CTS;
1284 ixgbe_write_mbx(hw, &ping, 1, i);
1285 }
1286}
1287
1288int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1289{
1290 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1291 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1292 return -EINVAL;
1293 adapter->vfinfo[vf].pf_set_mac = true;
1294 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1295 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1296 " change effective.");
1297 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1298 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1299 " but the PF device is not up.\n");
1300 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1301 " attempting to use the VF device.\n");
1302 }
1303 return ixgbe_set_vf_mac(adapter, vf, mac);
1304}
1305
1306static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1307 u16 vlan, u8 qos)
1308{
1309 struct ixgbe_hw *hw = &adapter->hw;
1310 int err;
1311
1312 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
1313 if (err)
1314 goto out;
1315
1316 /* Revoke tagless access via VLAN 0 */
1317 ixgbe_set_vf_vlan(adapter, false, 0, vf);
1318
1319 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1320 ixgbe_set_vmolr(hw, vf, false);
1321 if (adapter->vfinfo[vf].spoofchk_enabled)
1322 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1323 adapter->vfinfo[vf].vlan_count++;
1324
1325 /* enable hide vlan on X550 */
1326 if (hw->mac.type >= ixgbe_mac_X550)
1327 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1328 IXGBE_QDE_HIDE_VLAN);
1329
1330 adapter->vfinfo[vf].pf_vlan = vlan;
1331 adapter->vfinfo[vf].pf_qos = qos;
1332 dev_info(&adapter->pdev->dev,
1333 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1334 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1335 dev_warn(&adapter->pdev->dev,
1336 "The VF VLAN has been set, but the PF device is not up.\n");
1337 dev_warn(&adapter->pdev->dev,
1338 "Bring the PF device up before attempting to use the VF device.\n");
1339 }
1340
1341out:
1342 return err;
1343}
1344
1345static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1346{
1347 struct ixgbe_hw *hw = &adapter->hw;
1348 int err;
1349
1350 err = ixgbe_set_vf_vlan(adapter, false,
1351 adapter->vfinfo[vf].pf_vlan, vf);
1352 /* Restore tagless access via VLAN 0 */
1353 ixgbe_set_vf_vlan(adapter, true, 0, vf);
1354 ixgbe_clear_vmvir(adapter, vf);
1355 ixgbe_set_vmolr(hw, vf, true);
1356 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1357 if (adapter->vfinfo[vf].vlan_count)
1358 adapter->vfinfo[vf].vlan_count--;
1359
1360 /* disable hide VLAN on X550 */
1361 if (hw->mac.type >= ixgbe_mac_X550)
1362 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
1363
1364 adapter->vfinfo[vf].pf_vlan = 0;
1365 adapter->vfinfo[vf].pf_qos = 0;
1366
1367 return err;
1368}
1369
1370int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1371{
1372 int err = 0;
1373 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1374
1375 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1376 return -EINVAL;
1377 if (vlan || qos) {
1378 /* Check if there is already a port VLAN set, if so
1379 * we have to delete the old one first before we
1380 * can set the new one. The usage model had
1381 * previously assumed the user would delete the
1382 * old port VLAN before setting a new one but this
1383 * is not necessarily the case.
1384 */
1385 if (adapter->vfinfo[vf].pf_vlan)
1386 err = ixgbe_disable_port_vlan(adapter, vf);
1387 if (err)
1388 goto out;
1389 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1390 } else {
1391 err = ixgbe_disable_port_vlan(adapter, vf);
1392 }
1393
1394out:
1395 return err;
1396}
1397
1398static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1399{
1400 switch (adapter->link_speed) {
1401 case IXGBE_LINK_SPEED_100_FULL:
1402 return 100;
1403 case IXGBE_LINK_SPEED_1GB_FULL:
1404 return 1000;
1405 case IXGBE_LINK_SPEED_10GB_FULL:
1406 return 10000;
1407 default:
1408 return 0;
1409 }
1410}
1411
1412static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1413{
1414 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1415 struct ixgbe_hw *hw = &adapter->hw;
1416 u32 bcnrc_val = 0;
1417 u16 queue, queues_per_pool;
1418 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1419
1420 if (tx_rate) {
1421 /* start with base link speed value */
1422 bcnrc_val = adapter->vf_rate_link_speed;
1423
1424 /* Calculate the rate factor values to set */
1425 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1426 bcnrc_val /= tx_rate;
1427
1428 /* clear everything but the rate factor */
1429 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1430 IXGBE_RTTBCNRC_RF_DEC_MASK;
1431
1432 /* enable the rate scheduler */
1433 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1434 }
1435
1436 /*
1437 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1438 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1439 * and 0x004 otherwise.
1440 */
1441 switch (hw->mac.type) {
1442 case ixgbe_mac_82599EB:
1443 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1444 break;
1445 case ixgbe_mac_X540:
1446 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1447 break;
1448 default:
1449 break;
1450 }
1451
1452 /* determine how many queues per pool based on VMDq mask */
1453 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1454
1455 /* write value for all Tx queues belonging to VF */
1456 for (queue = 0; queue < queues_per_pool; queue++) {
1457 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1458
1459 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1460 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1461 }
1462}
1463
1464void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1465{
1466 int i;
1467
1468 /* VF Tx rate limit was not set */
1469 if (!adapter->vf_rate_link_speed)
1470 return;
1471
1472 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1473 adapter->vf_rate_link_speed = 0;
1474 dev_info(&adapter->pdev->dev,
1475 "Link speed has been changed. VF Transmit rate is disabled\n");
1476 }
1477
1478 for (i = 0; i < adapter->num_vfs; i++) {
1479 if (!adapter->vf_rate_link_speed)
1480 adapter->vfinfo[i].tx_rate = 0;
1481
1482 ixgbe_set_vf_rate_limit(adapter, i);
1483 }
1484}
1485
1486int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1487 int max_tx_rate)
1488{
1489 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1490 int link_speed;
1491
1492 /* verify VF is active */
1493 if (vf >= adapter->num_vfs)
1494 return -EINVAL;
1495
1496 /* verify link is up */
1497 if (!adapter->link_up)
1498 return -EINVAL;
1499
1500 /* verify we are linked at 10Gbps */
1501 link_speed = ixgbe_link_mbps(adapter);
1502 if (link_speed != 10000)
1503 return -EINVAL;
1504
1505 if (min_tx_rate)
1506 return -EINVAL;
1507
1508 /* rate limit cannot be less than 10Mbs or greater than link speed */
1509 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1510 return -EINVAL;
1511
1512 /* store values */
1513 adapter->vf_rate_link_speed = link_speed;
1514 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1515
1516 /* update hardware configuration */
1517 ixgbe_set_vf_rate_limit(adapter, vf);
1518
1519 return 0;
1520}
1521
1522int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1523{
1524 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1525 int vf_target_reg = vf >> 3;
1526 int vf_target_shift = vf % 8;
1527 struct ixgbe_hw *hw = &adapter->hw;
1528 u32 regval;
1529
1530 if (vf >= adapter->num_vfs)
1531 return -EINVAL;
1532
1533 adapter->vfinfo[vf].spoofchk_enabled = setting;
1534
1535 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1536 regval &= ~(1 << vf_target_shift);
1537 regval |= (setting << vf_target_shift);
1538 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1539
1540 if (adapter->vfinfo[vf].vlan_count) {
1541 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1542 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1543 regval &= ~(1 << vf_target_shift);
1544 regval |= (setting << vf_target_shift);
1545 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1546 }
1547
1548 return 0;
1549}
1550
1551int ixgbe_ndo_set_vf_rss_query_en(struct net_device *netdev, int vf,
1552 bool setting)
1553{
1554 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1555
1556 /* This operation is currently supported only for 82599 and x540
1557 * devices.
1558 */
1559 if (adapter->hw.mac.type < ixgbe_mac_82599EB ||
1560 adapter->hw.mac.type >= ixgbe_mac_X550)
1561 return -EOPNOTSUPP;
1562
1563 if (vf >= adapter->num_vfs)
1564 return -EINVAL;
1565
1566 adapter->vfinfo[vf].rss_query_enabled = setting;
1567
1568 return 0;
1569}
1570
1571int ixgbe_ndo_set_vf_trust(struct net_device *netdev, int vf, bool setting)
1572{
1573 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1574
1575 if (vf >= adapter->num_vfs)
1576 return -EINVAL;
1577
1578 /* nothing to do */
1579 if (adapter->vfinfo[vf].trusted == setting)
1580 return 0;
1581
1582 adapter->vfinfo[vf].trusted = setting;
1583
1584 /* reset VF to reconfigure features */
1585 adapter->vfinfo[vf].clear_to_send = false;
1586 ixgbe_ping_vf(adapter, vf);
1587
1588 e_info(drv, "VF %u is %strusted\n", vf, setting ? "" : "not ");
1589
1590 return 0;
1591}
1592
1593int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1594 int vf, struct ifla_vf_info *ivi)
1595{
1596 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1597 if (vf >= adapter->num_vfs)
1598 return -EINVAL;
1599 ivi->vf = vf;
1600 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1601 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1602 ivi->min_tx_rate = 0;
1603 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1604 ivi->qos = adapter->vfinfo[vf].pf_qos;
1605 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1606 ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
1607 ivi->trusted = adapter->vfinfo[vf].trusted;
1608 return 0;
1609}