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