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ixgbe: allow multiple queues in SRIOV mode
[deliverable/linux.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2014 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 #ifdef NETIF_F_HW_VLAN_CTAG_TX
40 #include <linux/if_vlan.h>
41 #endif
42
43 #include "ixgbe.h"
44 #include "ixgbe_type.h"
45 #include "ixgbe_sriov.h"
46
47 #ifdef CONFIG_PCI_IOV
48 static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
49 {
50 struct ixgbe_hw *hw = &adapter->hw;
51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
53
54 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
55 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
56
57 /* Enable VMDq flag so device will be set in VM mode */
58 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
59 if (!adapter->ring_feature[RING_F_VMDQ].limit)
60 adapter->ring_feature[RING_F_VMDQ].limit = 1;
61 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
62
63 num_vf_macvlans = hw->mac.num_rar_entries -
64 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
65
66 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
67 sizeof(struct vf_macvlans),
68 GFP_KERNEL);
69 if (mv_list) {
70 /* Initialize list of VF macvlans */
71 INIT_LIST_HEAD(&adapter->vf_mvs.l);
72 for (i = 0; i < num_vf_macvlans; i++) {
73 mv_list->vf = -1;
74 mv_list->free = true;
75 list_add(&mv_list->l, &adapter->vf_mvs.l);
76 mv_list++;
77 }
78 }
79
80 /* Initialize default switching mode VEB */
81 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
82 adapter->flags2 |= IXGBE_FLAG2_BRIDGE_MODE_VEB;
83
84 /* If call to enable VFs succeeded then allocate memory
85 * for per VF control structures.
86 */
87 adapter->vfinfo =
88 kcalloc(adapter->num_vfs,
89 sizeof(struct vf_data_storage), GFP_KERNEL);
90 if (adapter->vfinfo) {
91 /* limit trafffic classes based on VFs enabled */
92 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
93 (adapter->num_vfs < 16)) {
94 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
95 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
96 } else if (adapter->num_vfs < 32) {
97 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
98 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
99 } else {
100 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
101 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
102 }
103
104 /* Disable RSC when in SR-IOV mode */
105 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
106 IXGBE_FLAG2_RSC_ENABLED);
107
108 /* enable spoof checking for all VFs */
109 for (i = 0; i < adapter->num_vfs; i++)
110 adapter->vfinfo[i].spoofchk_enabled = true;
111 return 0;
112 }
113
114 return -ENOMEM;
115 }
116
117 /* Note this function is called when the user wants to enable SR-IOV
118 * VFs using the now deprecated module parameter
119 */
120 void ixgbe_enable_sriov(struct ixgbe_adapter *adapter)
121 {
122 int pre_existing_vfs = 0;
123
124 pre_existing_vfs = pci_num_vf(adapter->pdev);
125 if (!pre_existing_vfs && !adapter->num_vfs)
126 return;
127
128 /* If there are pre-existing VFs then we have to force
129 * use of that many - over ride any module parameter value.
130 * This may result from the user unloading the PF driver
131 * while VFs were assigned to guest VMs or because the VFs
132 * have been created via the new PCI SR-IOV sysfs interface.
133 */
134 if (pre_existing_vfs) {
135 adapter->num_vfs = pre_existing_vfs;
136 dev_warn(&adapter->pdev->dev,
137 "Virtual Functions already enabled for this device - Please reload all VF drivers to avoid spoofed packet errors\n");
138 } else {
139 int err;
140 /*
141 * The 82599 supports up to 64 VFs per physical function
142 * but this implementation limits allocation to 63 so that
143 * basic networking resources are still available to the
144 * physical function. If the user requests greater thn
145 * 63 VFs then it is an error - reset to default of zero.
146 */
147 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, IXGBE_MAX_VFS_DRV_LIMIT);
148
149 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
150 if (err) {
151 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
152 adapter->num_vfs = 0;
153 return;
154 }
155 }
156
157 if (!__ixgbe_enable_sriov(adapter))
158 return;
159
160 /* If we have gotten to this point then there is no memory available
161 * to manage the VF devices - print message and bail.
162 */
163 e_err(probe, "Unable to allocate memory for VF Data Storage - "
164 "SRIOV disabled\n");
165 ixgbe_disable_sriov(adapter);
166 }
167
168 #endif /* #ifdef CONFIG_PCI_IOV */
169 int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
170 {
171 struct ixgbe_hw *hw = &adapter->hw;
172 u32 gpie;
173 u32 vmdctl;
174 int rss;
175
176 /* set num VFs to 0 to prevent access to vfinfo */
177 adapter->num_vfs = 0;
178
179 /* free VF control structures */
180 kfree(adapter->vfinfo);
181 adapter->vfinfo = NULL;
182
183 /* free macvlan list */
184 kfree(adapter->mv_list);
185 adapter->mv_list = NULL;
186
187 /* if SR-IOV is already disabled then there is nothing to do */
188 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
189 return 0;
190
191 #ifdef CONFIG_PCI_IOV
192 /*
193 * If our VFs are assigned we cannot shut down SR-IOV
194 * without causing issues, so just leave the hardware
195 * available but disabled
196 */
197 if (pci_vfs_assigned(adapter->pdev)) {
198 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
199 return -EPERM;
200 }
201 /* disable iov and allow time for transactions to clear */
202 pci_disable_sriov(adapter->pdev);
203 #endif
204
205 /* turn off device IOV mode */
206 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
207 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
208 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
209 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
210
211 /* set default pool back to 0 */
212 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
213 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
214 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
215 IXGBE_WRITE_FLUSH(hw);
216
217 /* Disable VMDq flag so device will be set in VM mode */
218 if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
219 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
220 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
221 rss = min_t(int, ixgbe_max_rss_indices(adapter),
222 num_online_cpus());
223 } else {
224 rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
225 }
226
227 adapter->ring_feature[RING_F_VMDQ].offset = 0;
228 adapter->ring_feature[RING_F_RSS].limit = rss;
229
230 /* take a breather then clean up driver data */
231 msleep(100);
232 return 0;
233 }
234
235 static int ixgbe_pci_sriov_enable(struct pci_dev *dev, int num_vfs)
236 {
237 #ifdef CONFIG_PCI_IOV
238 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
239 int err = 0;
240 int i;
241 int pre_existing_vfs = pci_num_vf(dev);
242
243 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
244 err = ixgbe_disable_sriov(adapter);
245 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
246 return num_vfs;
247
248 if (err)
249 return err;
250
251 /* While the SR-IOV capability structure reports total VFs to be 64,
252 * we have to limit the actual number allocated based on two factors.
253 * First, we reserve some transmit/receive resources for the PF.
254 * Second, VMDQ also uses the same pools that SR-IOV does. We need to
255 * account for this, so that we don't accidentally allocate more VFs
256 * than we have available pools. The PCI bus driver already checks for
257 * other values out of range.
258 */
259 if ((num_vfs + adapter->num_rx_pools) > IXGBE_MAX_VF_FUNCTIONS)
260 return -EPERM;
261
262 adapter->num_vfs = num_vfs;
263
264 err = __ixgbe_enable_sriov(adapter);
265 if (err)
266 return err;
267
268 for (i = 0; i < adapter->num_vfs; i++)
269 ixgbe_vf_configuration(dev, (i | 0x10000000));
270
271 err = pci_enable_sriov(dev, num_vfs);
272 if (err) {
273 e_dev_warn("Failed to enable PCI sriov: %d\n", err);
274 return err;
275 }
276 ixgbe_sriov_reinit(adapter);
277
278 return num_vfs;
279 #else
280 return 0;
281 #endif
282 }
283
284 static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
285 {
286 struct ixgbe_adapter *adapter = pci_get_drvdata(dev);
287 int err;
288 #ifdef CONFIG_PCI_IOV
289 u32 current_flags = adapter->flags;
290 #endif
291
292 err = ixgbe_disable_sriov(adapter);
293
294 /* Only reinit if no error and state changed */
295 #ifdef CONFIG_PCI_IOV
296 if (!err && current_flags != adapter->flags)
297 ixgbe_sriov_reinit(adapter);
298 #endif
299
300 return err;
301 }
302
303 int ixgbe_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
304 {
305 if (num_vfs == 0)
306 return ixgbe_pci_sriov_disable(dev);
307 else
308 return ixgbe_pci_sriov_enable(dev, num_vfs);
309 }
310
311 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
312 u32 *msgbuf, u32 vf)
313 {
314 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
315 >> IXGBE_VT_MSGINFO_SHIFT;
316 u16 *hash_list = (u16 *)&msgbuf[1];
317 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
318 struct ixgbe_hw *hw = &adapter->hw;
319 int i;
320 u32 vector_bit;
321 u32 vector_reg;
322 u32 mta_reg;
323 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
324
325 /* only so many hash values supported */
326 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
327
328 /*
329 * salt away the number of multi cast addresses assigned
330 * to this VF for later use to restore when the PF multi cast
331 * list changes
332 */
333 vfinfo->num_vf_mc_hashes = entries;
334
335 /*
336 * VFs are limited to using the MTA hash table for their multicast
337 * addresses
338 */
339 for (i = 0; i < entries; i++) {
340 vfinfo->vf_mc_hashes[i] = hash_list[i];
341 }
342
343 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
344 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
345 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
346 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
347 mta_reg |= (1 << vector_bit);
348 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
349 }
350 vmolr |= IXGBE_VMOLR_ROMPE;
351 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
352
353 return 0;
354 }
355
356 #ifdef CONFIG_PCI_IOV
357 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
358 {
359 struct ixgbe_hw *hw = &adapter->hw;
360 struct vf_data_storage *vfinfo;
361 int i, j;
362 u32 vector_bit;
363 u32 vector_reg;
364 u32 mta_reg;
365
366 for (i = 0; i < adapter->num_vfs; i++) {
367 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(i));
368 vfinfo = &adapter->vfinfo[i];
369 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
370 hw->addr_ctrl.mta_in_use++;
371 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
372 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
373 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
374 mta_reg |= (1 << vector_bit);
375 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
376 }
377
378 if (vfinfo->num_vf_mc_hashes)
379 vmolr |= IXGBE_VMOLR_ROMPE;
380 else
381 vmolr &= ~IXGBE_VMOLR_ROMPE;
382 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr);
383 }
384
385 /* Restore any VF macvlans */
386 ixgbe_full_sync_mac_table(adapter);
387 }
388 #endif
389
390 static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
391 u32 vf)
392 {
393 /* VLAN 0 is a special case, don't allow it to be removed */
394 if (!vid && !add)
395 return 0;
396
397 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
398 }
399
400 static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
401 {
402 struct ixgbe_hw *hw = &adapter->hw;
403 int max_frame = msgbuf[1];
404 u32 max_frs;
405
406 /*
407 * For 82599EB we have to keep all PFs and VFs operating with
408 * the same max_frame value in order to avoid sending an oversize
409 * frame to a VF. In order to guarantee this is handled correctly
410 * for all cases we have several special exceptions to take into
411 * account before we can enable the VF for receive
412 */
413 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
414 struct net_device *dev = adapter->netdev;
415 int pf_max_frame = dev->mtu + ETH_HLEN;
416 u32 reg_offset, vf_shift, vfre;
417 s32 err = 0;
418
419 #ifdef CONFIG_FCOE
420 if (dev->features & NETIF_F_FCOE_MTU)
421 pf_max_frame = max_t(int, pf_max_frame,
422 IXGBE_FCOE_JUMBO_FRAME_SIZE);
423
424 #endif /* CONFIG_FCOE */
425 switch (adapter->vfinfo[vf].vf_api) {
426 case ixgbe_mbox_api_11:
427 /*
428 * Version 1.1 supports jumbo frames on VFs if PF has
429 * jumbo frames enabled which means legacy VFs are
430 * disabled
431 */
432 if (pf_max_frame > ETH_FRAME_LEN)
433 break;
434 default:
435 /*
436 * If the PF or VF are running w/ jumbo frames enabled
437 * we need to shut down the VF Rx path as we cannot
438 * support jumbo frames on legacy VFs
439 */
440 if ((pf_max_frame > ETH_FRAME_LEN) ||
441 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
442 err = -EINVAL;
443 break;
444 }
445
446 /* determine VF receive enable location */
447 vf_shift = vf % 32;
448 reg_offset = vf / 32;
449
450 /* enable or disable receive depending on error */
451 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
452 if (err)
453 vfre &= ~(1 << vf_shift);
454 else
455 vfre |= 1 << vf_shift;
456 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
457
458 if (err) {
459 e_err(drv, "VF max_frame %d out of range\n", max_frame);
460 return err;
461 }
462 }
463
464 /* MTU < 68 is an error and causes problems on some kernels */
465 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
466 e_err(drv, "VF max_frame %d out of range\n", max_frame);
467 return -EINVAL;
468 }
469
470 /* pull current max frame size from hardware */
471 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
472 max_frs &= IXGBE_MHADD_MFS_MASK;
473 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
474
475 if (max_frs < max_frame) {
476 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
477 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
478 }
479
480 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
481
482 return 0;
483 }
484
485 static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
486 {
487 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
488 vmolr |= IXGBE_VMOLR_BAM;
489 if (aupe)
490 vmolr |= IXGBE_VMOLR_AUPE;
491 else
492 vmolr &= ~IXGBE_VMOLR_AUPE;
493 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
494 }
495
496 static void ixgbe_clear_vmvir(struct ixgbe_adapter *adapter, u32 vf)
497 {
498 struct ixgbe_hw *hw = &adapter->hw;
499
500 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
501 }
502 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
503 {
504 struct ixgbe_hw *hw = &adapter->hw;
505 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
506 u8 num_tcs = netdev_get_num_tc(adapter->netdev);
507
508 /* add PF assigned VLAN or VLAN 0 */
509 ixgbe_set_vf_vlan(adapter, true, vfinfo->pf_vlan, vf);
510
511 /* reset offloads to defaults */
512 ixgbe_set_vmolr(hw, vf, !vfinfo->pf_vlan);
513
514 /* set outgoing tags for VFs */
515 if (!vfinfo->pf_vlan && !vfinfo->pf_qos && !num_tcs) {
516 ixgbe_clear_vmvir(adapter, vf);
517 } else {
518 if (vfinfo->pf_qos || !num_tcs)
519 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
520 vfinfo->pf_qos, vf);
521 else
522 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan,
523 adapter->default_up, vf);
524
525 if (vfinfo->spoofchk_enabled)
526 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
527 }
528
529 /* reset multicast table array for vf */
530 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
531
532 /* Flush and reset the mta with the new values */
533 ixgbe_set_rx_mode(adapter->netdev);
534
535 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
536
537 /* reset VF api back to unknown */
538 adapter->vfinfo[vf].vf_api = ixgbe_mbox_api_10;
539 }
540
541 static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
542 int vf, unsigned char *mac_addr)
543 {
544 ixgbe_del_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
545 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, ETH_ALEN);
546 ixgbe_add_mac_filter(adapter, adapter->vfinfo[vf].vf_mac_addresses, vf);
547
548 return 0;
549 }
550
551 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
552 int vf, int index, unsigned char *mac_addr)
553 {
554 struct list_head *pos;
555 struct vf_macvlans *entry;
556
557 if (index <= 1) {
558 list_for_each(pos, &adapter->vf_mvs.l) {
559 entry = list_entry(pos, struct vf_macvlans, l);
560 if (entry->vf == vf) {
561 entry->vf = -1;
562 entry->free = true;
563 entry->is_macvlan = false;
564 ixgbe_del_mac_filter(adapter,
565 entry->vf_macvlan, vf);
566 }
567 }
568 }
569
570 /*
571 * If index was zero then we were asked to clear the uc list
572 * for the VF. We're done.
573 */
574 if (!index)
575 return 0;
576
577 entry = NULL;
578
579 list_for_each(pos, &adapter->vf_mvs.l) {
580 entry = list_entry(pos, struct vf_macvlans, l);
581 if (entry->free)
582 break;
583 }
584
585 /*
586 * If we traversed the entire list and didn't find a free entry
587 * then we're out of space on the RAR table. Also entry may
588 * be NULL because the original memory allocation for the list
589 * failed, which is not fatal but does mean we can't support
590 * VF requests for MACVLAN because we couldn't allocate
591 * memory for the list management required.
592 */
593 if (!entry || !entry->free)
594 return -ENOSPC;
595
596 entry->free = false;
597 entry->is_macvlan = true;
598 entry->vf = vf;
599 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
600
601 ixgbe_add_mac_filter(adapter, mac_addr, vf);
602
603 return 0;
604 }
605
606 int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
607 {
608 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
609 unsigned int vfn = (event_mask & 0x3f);
610
611 bool enable = ((event_mask & 0x10000000U) != 0);
612
613 if (enable)
614 eth_zero_addr(adapter->vfinfo[vfn].vf_mac_addresses);
615
616 return 0;
617 }
618
619 static inline void ixgbe_write_qde(struct ixgbe_adapter *adapter, u32 vf,
620 u32 qde)
621 {
622 struct ixgbe_hw *hw = &adapter->hw;
623 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
624 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
625 int i;
626
627 for (i = vf * q_per_pool; i < ((vf + 1) * q_per_pool); i++) {
628 u32 reg;
629
630 /* flush previous write */
631 IXGBE_WRITE_FLUSH(hw);
632
633 /* indicate to hardware that we want to set drop enable */
634 reg = IXGBE_QDE_WRITE | IXGBE_QDE_ENABLE;
635 reg |= i << IXGBE_QDE_IDX_SHIFT;
636 IXGBE_WRITE_REG(hw, IXGBE_QDE, reg);
637 }
638 }
639
640 static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
641 {
642 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
643 struct ixgbe_hw *hw = &adapter->hw;
644 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
645 u32 reg, reg_offset, vf_shift;
646 u32 msgbuf[4] = {0, 0, 0, 0};
647 u8 *addr = (u8 *)(&msgbuf[1]);
648 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
649 int i;
650
651 e_info(probe, "VF Reset msg received from vf %d\n", vf);
652
653 /* reset the filters for the device */
654 ixgbe_vf_reset_event(adapter, vf);
655
656 /* set vf mac address */
657 if (!is_zero_ether_addr(vf_mac))
658 ixgbe_set_vf_mac(adapter, vf, vf_mac);
659
660 vf_shift = vf % 32;
661 reg_offset = vf / 32;
662
663 /* enable transmit for vf */
664 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
665 reg |= 1 << vf_shift;
666 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
667
668 /* force drop enable for all VF Rx queues */
669 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE);
670
671 /* enable receive for vf */
672 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
673 reg |= 1 << vf_shift;
674 /*
675 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
676 * For more info take a look at ixgbe_set_vf_lpe
677 */
678 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
679 struct net_device *dev = adapter->netdev;
680 int pf_max_frame = dev->mtu + ETH_HLEN;
681
682 #ifdef CONFIG_FCOE
683 if (dev->features & NETIF_F_FCOE_MTU)
684 pf_max_frame = max_t(int, pf_max_frame,
685 IXGBE_FCOE_JUMBO_FRAME_SIZE);
686
687 #endif /* CONFIG_FCOE */
688 if (pf_max_frame > ETH_FRAME_LEN)
689 reg &= ~(1 << vf_shift);
690 }
691 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
692
693 /* enable VF mailbox for further messages */
694 adapter->vfinfo[vf].clear_to_send = true;
695
696 /* Enable counting of spoofed packets in the SSVPC register */
697 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
698 reg |= (1 << vf_shift);
699 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
700
701 /*
702 * Reset the VFs TDWBAL and TDWBAH registers
703 * which are not cleared by an FLR
704 */
705 for (i = 0; i < q_per_pool; i++) {
706 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBAHn(q_per_pool, vf, i), 0);
707 IXGBE_WRITE_REG(hw, IXGBE_PVFTDWBALn(q_per_pool, vf, i), 0);
708 }
709
710 /* reply to reset with ack and vf mac address */
711 msgbuf[0] = IXGBE_VF_RESET;
712 if (!is_zero_ether_addr(vf_mac)) {
713 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
714 memcpy(addr, vf_mac, ETH_ALEN);
715 } else {
716 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
717 dev_warn(&adapter->pdev->dev,
718 "VF %d has no MAC address assigned, you may have to assign one manually\n",
719 vf);
720 }
721
722 /*
723 * Piggyback the multicast filter type so VF can compute the
724 * correct vectors
725 */
726 msgbuf[3] = hw->mac.mc_filter_type;
727 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
728
729 return 0;
730 }
731
732 static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
733 u32 *msgbuf, u32 vf)
734 {
735 u8 *new_mac = ((u8 *)(&msgbuf[1]));
736
737 if (!is_valid_ether_addr(new_mac)) {
738 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
739 return -1;
740 }
741
742 if (adapter->vfinfo[vf].pf_set_mac &&
743 !ether_addr_equal(adapter->vfinfo[vf].vf_mac_addresses, new_mac)) {
744 e_warn(drv,
745 "VF %d attempted to override administratively set MAC address\n"
746 "Reload the VF driver to resume operations\n",
747 vf);
748 return -1;
749 }
750
751 return ixgbe_set_vf_mac(adapter, vf, new_mac) < 0;
752 }
753
754 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
755 {
756 u32 vlvf;
757 s32 regindex;
758
759 /* short cut the special case */
760 if (vlan == 0)
761 return 0;
762
763 /* Search for the vlan id in the VLVF entries */
764 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
765 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
766 if ((vlvf & VLAN_VID_MASK) == vlan)
767 break;
768 }
769
770 /* Return a negative value if not found */
771 if (regindex >= IXGBE_VLVF_ENTRIES)
772 regindex = -1;
773
774 return regindex;
775 }
776
777 static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
778 u32 *msgbuf, u32 vf)
779 {
780 struct ixgbe_hw *hw = &adapter->hw;
781 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
782 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
783 int err;
784 s32 reg_ndx;
785 u32 vlvf;
786 u32 bits;
787 u8 tcs = netdev_get_num_tc(adapter->netdev);
788
789 if (adapter->vfinfo[vf].pf_vlan || tcs) {
790 e_warn(drv,
791 "VF %d attempted to override administratively set VLAN configuration\n"
792 "Reload the VF driver to resume operations\n",
793 vf);
794 return -1;
795 }
796
797 if (add)
798 adapter->vfinfo[vf].vlan_count++;
799 else if (adapter->vfinfo[vf].vlan_count)
800 adapter->vfinfo[vf].vlan_count--;
801
802 /* in case of promiscuous mode any VLAN filter set for a VF must
803 * also have the PF pool added to it.
804 */
805 if (add && adapter->netdev->flags & IFF_PROMISC)
806 err = ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
807
808 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
809 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
810 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
811
812 /* Go through all the checks to see if the VLAN filter should
813 * be wiped completely.
814 */
815 if (!add && adapter->netdev->flags & IFF_PROMISC) {
816 reg_ndx = ixgbe_find_vlvf_entry(hw, vid);
817 if (reg_ndx < 0)
818 return err;
819 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(reg_ndx));
820 /* See if any other pools are set for this VLAN filter
821 * entry other than the PF.
822 */
823 if (VMDQ_P(0) < 32) {
824 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
825 bits &= ~(1 << VMDQ_P(0));
826 bits |= IXGBE_READ_REG(hw,
827 IXGBE_VLVFB(reg_ndx * 2) + 1);
828 } else {
829 bits = IXGBE_READ_REG(hw,
830 IXGBE_VLVFB(reg_ndx * 2) + 1);
831 bits &= ~(1 << (VMDQ_P(0) - 32));
832 bits |= IXGBE_READ_REG(hw, IXGBE_VLVFB(reg_ndx * 2));
833 }
834
835 /* If the filter was removed then ensure PF pool bit
836 * is cleared if the PF only added itself to the pool
837 * because the PF is in promiscuous mode.
838 */
839 if ((vlvf & VLAN_VID_MASK) == vid &&
840 !test_bit(vid, adapter->active_vlans) && !bits)
841 ixgbe_set_vf_vlan(adapter, add, vid, VMDQ_P(0));
842 }
843
844 return err;
845 }
846
847 static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
848 u32 *msgbuf, u32 vf)
849 {
850 u8 *new_mac = ((u8 *)(&msgbuf[1]));
851 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
852 IXGBE_VT_MSGINFO_SHIFT;
853 int err;
854
855 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
856 e_warn(drv,
857 "VF %d requested MACVLAN filter but is administratively denied\n",
858 vf);
859 return -1;
860 }
861
862 /* An non-zero index indicates the VF is setting a filter */
863 if (index) {
864 if (!is_valid_ether_addr(new_mac)) {
865 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
866 return -1;
867 }
868
869 /*
870 * If the VF is allowed to set MAC filters then turn off
871 * anti-spoofing to avoid false positives.
872 */
873 if (adapter->vfinfo[vf].spoofchk_enabled)
874 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
875 }
876
877 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
878 if (err == -ENOSPC)
879 e_warn(drv,
880 "VF %d has requested a MACVLAN filter but there is no space for it\n",
881 vf);
882
883 return err < 0;
884 }
885
886 static int ixgbe_negotiate_vf_api(struct ixgbe_adapter *adapter,
887 u32 *msgbuf, u32 vf)
888 {
889 int api = msgbuf[1];
890
891 switch (api) {
892 case ixgbe_mbox_api_10:
893 case ixgbe_mbox_api_11:
894 adapter->vfinfo[vf].vf_api = api;
895 return 0;
896 default:
897 break;
898 }
899
900 e_info(drv, "VF %d requested invalid api version %u\n", vf, api);
901
902 return -1;
903 }
904
905 static int ixgbe_get_vf_queues(struct ixgbe_adapter *adapter,
906 u32 *msgbuf, u32 vf)
907 {
908 struct net_device *dev = adapter->netdev;
909 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
910 unsigned int default_tc = 0;
911 u8 num_tcs = netdev_get_num_tc(dev);
912
913 /* verify the PF is supporting the correct APIs */
914 switch (adapter->vfinfo[vf].vf_api) {
915 case ixgbe_mbox_api_20:
916 case ixgbe_mbox_api_11:
917 break;
918 default:
919 return -1;
920 }
921
922 /* only allow 1 Tx queue for bandwidth limiting */
923 msgbuf[IXGBE_VF_TX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
924 msgbuf[IXGBE_VF_RX_QUEUES] = __ALIGN_MASK(1, ~vmdq->mask);
925
926 /* if TCs > 1 determine which TC belongs to default user priority */
927 if (num_tcs > 1)
928 default_tc = netdev_get_prio_tc_map(dev, adapter->default_up);
929
930 /* notify VF of need for VLAN tag stripping, and correct queue */
931 if (num_tcs)
932 msgbuf[IXGBE_VF_TRANS_VLAN] = num_tcs;
933 else if (adapter->vfinfo[vf].pf_vlan || adapter->vfinfo[vf].pf_qos)
934 msgbuf[IXGBE_VF_TRANS_VLAN] = 1;
935 else
936 msgbuf[IXGBE_VF_TRANS_VLAN] = 0;
937
938 /* notify VF of default queue */
939 msgbuf[IXGBE_VF_DEF_QUEUE] = default_tc;
940
941 return 0;
942 }
943
944 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
945 {
946 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
947 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
948 struct ixgbe_hw *hw = &adapter->hw;
949 s32 retval;
950
951 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
952
953 if (retval) {
954 pr_err("Error receiving message from VF\n");
955 return retval;
956 }
957
958 /* this is a message we already processed, do nothing */
959 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
960 return 0;
961
962 /* flush the ack before we write any messages back */
963 IXGBE_WRITE_FLUSH(hw);
964
965 if (msgbuf[0] == IXGBE_VF_RESET)
966 return ixgbe_vf_reset_msg(adapter, vf);
967
968 /*
969 * until the vf completes a virtual function reset it should not be
970 * allowed to start any configuration.
971 */
972 if (!adapter->vfinfo[vf].clear_to_send) {
973 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
974 ixgbe_write_mbx(hw, msgbuf, 1, vf);
975 return 0;
976 }
977
978 switch ((msgbuf[0] & 0xFFFF)) {
979 case IXGBE_VF_SET_MAC_ADDR:
980 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
981 break;
982 case IXGBE_VF_SET_MULTICAST:
983 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
984 break;
985 case IXGBE_VF_SET_VLAN:
986 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
987 break;
988 case IXGBE_VF_SET_LPE:
989 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
990 break;
991 case IXGBE_VF_SET_MACVLAN:
992 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
993 break;
994 case IXGBE_VF_API_NEGOTIATE:
995 retval = ixgbe_negotiate_vf_api(adapter, msgbuf, vf);
996 break;
997 case IXGBE_VF_GET_QUEUES:
998 retval = ixgbe_get_vf_queues(adapter, msgbuf, vf);
999 break;
1000 default:
1001 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
1002 retval = IXGBE_ERR_MBX;
1003 break;
1004 }
1005
1006 /* notify the VF of the results of what it sent us */
1007 if (retval)
1008 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
1009 else
1010 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
1011
1012 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
1013
1014 ixgbe_write_mbx(hw, msgbuf, mbx_size, vf);
1015
1016 return retval;
1017 }
1018
1019 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
1020 {
1021 struct ixgbe_hw *hw = &adapter->hw;
1022 u32 msg = IXGBE_VT_MSGTYPE_NACK;
1023
1024 /* if device isn't clear to send it shouldn't be reading either */
1025 if (!adapter->vfinfo[vf].clear_to_send)
1026 ixgbe_write_mbx(hw, &msg, 1, vf);
1027 }
1028
1029 void ixgbe_msg_task(struct ixgbe_adapter *adapter)
1030 {
1031 struct ixgbe_hw *hw = &adapter->hw;
1032 u32 vf;
1033
1034 for (vf = 0; vf < adapter->num_vfs; vf++) {
1035 /* process any reset requests */
1036 if (!ixgbe_check_for_rst(hw, vf))
1037 ixgbe_vf_reset_event(adapter, vf);
1038
1039 /* process any messages pending */
1040 if (!ixgbe_check_for_msg(hw, vf))
1041 ixgbe_rcv_msg_from_vf(adapter, vf);
1042
1043 /* process any acks */
1044 if (!ixgbe_check_for_ack(hw, vf))
1045 ixgbe_rcv_ack_from_vf(adapter, vf);
1046 }
1047 }
1048
1049 void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
1050 {
1051 struct ixgbe_hw *hw = &adapter->hw;
1052
1053 /* disable transmit and receive for all vfs */
1054 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
1055 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
1056
1057 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
1058 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
1059 }
1060
1061 void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
1062 {
1063 struct ixgbe_hw *hw = &adapter->hw;
1064 u32 ping;
1065 int i;
1066
1067 for (i = 0 ; i < adapter->num_vfs; i++) {
1068 ping = IXGBE_PF_CONTROL_MSG;
1069 if (adapter->vfinfo[i].clear_to_send)
1070 ping |= IXGBE_VT_MSGTYPE_CTS;
1071 ixgbe_write_mbx(hw, &ping, 1, i);
1072 }
1073 }
1074
1075 int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1076 {
1077 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1078 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
1079 return -EINVAL;
1080 adapter->vfinfo[vf].pf_set_mac = true;
1081 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
1082 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
1083 " change effective.");
1084 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1085 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
1086 " but the PF device is not up.\n");
1087 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
1088 " attempting to use the VF device.\n");
1089 }
1090 return ixgbe_set_vf_mac(adapter, vf, mac);
1091 }
1092
1093 static int ixgbe_enable_port_vlan(struct ixgbe_adapter *adapter, int vf,
1094 u16 vlan, u8 qos)
1095 {
1096 struct ixgbe_hw *hw = &adapter->hw;
1097 int err = 0;
1098
1099 if (adapter->vfinfo[vf].pf_vlan)
1100 err = ixgbe_set_vf_vlan(adapter, false,
1101 adapter->vfinfo[vf].pf_vlan,
1102 vf);
1103 if (err)
1104 goto out;
1105 ixgbe_set_vmvir(adapter, vlan, qos, vf);
1106 ixgbe_set_vmolr(hw, vf, false);
1107 if (adapter->vfinfo[vf].spoofchk_enabled)
1108 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
1109 adapter->vfinfo[vf].vlan_count++;
1110
1111 /* enable hide vlan on X550 */
1112 if (hw->mac.type >= ixgbe_mac_X550)
1113 ixgbe_write_qde(adapter, vf, IXGBE_QDE_ENABLE |
1114 IXGBE_QDE_HIDE_VLAN);
1115
1116 adapter->vfinfo[vf].pf_vlan = vlan;
1117 adapter->vfinfo[vf].pf_qos = qos;
1118 dev_info(&adapter->pdev->dev,
1119 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
1120 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
1121 dev_warn(&adapter->pdev->dev,
1122 "The VF VLAN has been set, but the PF device is not up.\n");
1123 dev_warn(&adapter->pdev->dev,
1124 "Bring the PF device up before attempting to use the VF device.\n");
1125 }
1126
1127 out:
1128 return err;
1129 }
1130
1131 static int ixgbe_disable_port_vlan(struct ixgbe_adapter *adapter, int vf)
1132 {
1133 struct ixgbe_hw *hw = &adapter->hw;
1134 int err;
1135
1136 err = ixgbe_set_vf_vlan(adapter, false,
1137 adapter->vfinfo[vf].pf_vlan, vf);
1138 ixgbe_clear_vmvir(adapter, vf);
1139 ixgbe_set_vmolr(hw, vf, true);
1140 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
1141 if (adapter->vfinfo[vf].vlan_count)
1142 adapter->vfinfo[vf].vlan_count--;
1143 adapter->vfinfo[vf].pf_vlan = 0;
1144 adapter->vfinfo[vf].pf_qos = 0;
1145
1146 return err;
1147 }
1148
1149 int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1150 {
1151 int err = 0;
1152 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1153
1154 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
1155 return -EINVAL;
1156 if (vlan || qos) {
1157 /* Check if there is already a port VLAN set, if so
1158 * we have to delete the old one first before we
1159 * can set the new one. The usage model had
1160 * previously assumed the user would delete the
1161 * old port VLAN before setting a new one but this
1162 * is not necessarily the case.
1163 */
1164 if (adapter->vfinfo[vf].pf_vlan)
1165 err = ixgbe_disable_port_vlan(adapter, vf);
1166 if (err)
1167 goto out;
1168 err = ixgbe_enable_port_vlan(adapter, vf, vlan, qos);
1169 } else {
1170 err = ixgbe_disable_port_vlan(adapter, vf);
1171 }
1172
1173 out:
1174 return err;
1175 }
1176
1177 static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
1178 {
1179 switch (adapter->link_speed) {
1180 case IXGBE_LINK_SPEED_100_FULL:
1181 return 100;
1182 case IXGBE_LINK_SPEED_1GB_FULL:
1183 return 1000;
1184 case IXGBE_LINK_SPEED_10GB_FULL:
1185 return 10000;
1186 default:
1187 return 0;
1188 }
1189 }
1190
1191 static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
1192 {
1193 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
1194 struct ixgbe_hw *hw = &adapter->hw;
1195 u32 bcnrc_val = 0;
1196 u16 queue, queues_per_pool;
1197 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
1198
1199 if (tx_rate) {
1200 /* start with base link speed value */
1201 bcnrc_val = adapter->vf_rate_link_speed;
1202
1203 /* Calculate the rate factor values to set */
1204 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1205 bcnrc_val /= tx_rate;
1206
1207 /* clear everything but the rate factor */
1208 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1209 IXGBE_RTTBCNRC_RF_DEC_MASK;
1210
1211 /* enable the rate scheduler */
1212 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1213 }
1214
1215 /*
1216 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
1217 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
1218 * and 0x004 otherwise.
1219 */
1220 switch (hw->mac.type) {
1221 case ixgbe_mac_82599EB:
1222 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
1223 break;
1224 case ixgbe_mac_X540:
1225 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
1226 break;
1227 default:
1228 break;
1229 }
1230
1231 /* determine how many queues per pool based on VMDq mask */
1232 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
1233
1234 /* write value for all Tx queues belonging to VF */
1235 for (queue = 0; queue < queues_per_pool; queue++) {
1236 unsigned int reg_idx = (vf * queues_per_pool) + queue;
1237
1238 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
1239 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1240 }
1241 }
1242
1243 void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
1244 {
1245 int i;
1246
1247 /* VF Tx rate limit was not set */
1248 if (!adapter->vf_rate_link_speed)
1249 return;
1250
1251 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
1252 adapter->vf_rate_link_speed = 0;
1253 dev_info(&adapter->pdev->dev,
1254 "Link speed has been changed. VF Transmit rate is disabled\n");
1255 }
1256
1257 for (i = 0; i < adapter->num_vfs; i++) {
1258 if (!adapter->vf_rate_link_speed)
1259 adapter->vfinfo[i].tx_rate = 0;
1260
1261 ixgbe_set_vf_rate_limit(adapter, i);
1262 }
1263 }
1264
1265 int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int min_tx_rate,
1266 int max_tx_rate)
1267 {
1268 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1269 int link_speed;
1270
1271 /* verify VF is active */
1272 if (vf >= adapter->num_vfs)
1273 return -EINVAL;
1274
1275 /* verify link is up */
1276 if (!adapter->link_up)
1277 return -EINVAL;
1278
1279 /* verify we are linked at 10Gbps */
1280 link_speed = ixgbe_link_mbps(adapter);
1281 if (link_speed != 10000)
1282 return -EINVAL;
1283
1284 if (min_tx_rate)
1285 return -EINVAL;
1286
1287 /* rate limit cannot be less than 10Mbs or greater than link speed */
1288 if (max_tx_rate && ((max_tx_rate <= 10) || (max_tx_rate > link_speed)))
1289 return -EINVAL;
1290
1291 /* store values */
1292 adapter->vf_rate_link_speed = link_speed;
1293 adapter->vfinfo[vf].tx_rate = max_tx_rate;
1294
1295 /* update hardware configuration */
1296 ixgbe_set_vf_rate_limit(adapter, vf);
1297
1298 return 0;
1299 }
1300
1301 int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1302 {
1303 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1304 int vf_target_reg = vf >> 3;
1305 int vf_target_shift = vf % 8;
1306 struct ixgbe_hw *hw = &adapter->hw;
1307 u32 regval;
1308
1309 if (vf >= adapter->num_vfs)
1310 return -EINVAL;
1311
1312 adapter->vfinfo[vf].spoofchk_enabled = setting;
1313
1314 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1315 regval &= ~(1 << vf_target_shift);
1316 regval |= (setting << vf_target_shift);
1317 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1318
1319 if (adapter->vfinfo[vf].vlan_count) {
1320 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1321 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1322 regval &= ~(1 << vf_target_shift);
1323 regval |= (setting << vf_target_shift);
1324 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1325 }
1326
1327 return 0;
1328 }
1329
1330 int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1331 int vf, struct ifla_vf_info *ivi)
1332 {
1333 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1334 if (vf >= adapter->num_vfs)
1335 return -EINVAL;
1336 ivi->vf = vf;
1337 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
1338 ivi->max_tx_rate = adapter->vfinfo[vf].tx_rate;
1339 ivi->min_tx_rate = 0;
1340 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1341 ivi->qos = adapter->vfinfo[vf].pf_qos;
1342 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
1343 return 0;
1344 }
Linux kernel - Deliverables
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