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