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ixgbe: Move message handling routines into their own functions
[linux-2.6-block.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_sriov.c
CommitLineData
17367270
GR		 1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
94971820 4 Copyright(c) 1999 - 2012 Intel Corporation.
17367270
GR		 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
17367270
GR		 28#include <linux/types.h>
29#include <linux/module.h>
30#include <linux/pci.h>
31#include <linux/netdevice.h>
32#include <linux/vmalloc.h>
33#include <linux/string.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/tcp.h>
37#include <linux/ipv6.h>
38#ifdef NETIF_F_HW_VLAN_TX
39#include <linux/if_vlan.h>
40#endif
41
42#include "ixgbe.h"
c6bda30a 43#include "ixgbe_type.h"
17367270
GR		 44#include "ixgbe_sriov.h"
45
c6bda30a 46#ifdef CONFIG_PCI_IOV
c6bda30a
GR		 47void ixgbe_enable_sriov(struct ixgbe_adapter *adapter,
48 const struct ixgbe_info *ii)
49{
50 struct ixgbe_hw *hw = &adapter->hw;
c6bda30a
GR		 51 int num_vf_macvlans, i;
52 struct vf_macvlans *mv_list;
53 int pre_existing_vfs = 0;
54
9297127b 55 pre_existing_vfs = pci_num_vf(adapter->pdev);
c6bda30a
GR		 56 if (!pre_existing_vfs && !adapter->num_vfs)
57 return;
58
59 /* If there are pre-existing VFs then we have to force
60 * use of that many because they were not deleted the last
61 * time someone removed the PF driver. That would have
62 * been because they were allocated to guest VMs and can't
63 * be removed. Go ahead and just re-enable the old amount.
64 * If the user wants to change the number of VFs they can
65 * use ethtool while making sure no VFs are allocated to
66 * guest VMs... i.e. the right way.
67 */
68 if (pre_existing_vfs) {
69 adapter->num_vfs = pre_existing_vfs;
70 dev_warn(&adapter->pdev->dev, "Virtual Functions already "
71 "enabled for this device - Please reload all "
72 "VF drivers to avoid spoofed packet errors\n");
73 } else {
99d74487
AD		 74 int err;
75 /*
76 * The 82599 supports up to 64 VFs per physical function
77 * but this implementation limits allocation to 63 so that
78 * basic networking resources are still available to the
79 * physical function. If the user requests greater thn
80 * 63 VFs then it is an error - reset to default of zero.
81 */
82 adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63);
83
c6bda30a 84 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
73079ea0
AD		 85 if (err) {
86 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
99d74487
AD		 87 adapter->num_vfs = 0;
88 return;
73079ea0 89 }
c6bda30a 90 }
c6bda30a 91
73079ea0 92 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
c6bda30a
GR		 93 e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs);
94
73079ea0
AD		 95 /* Enable VMDq flag so device will be set in VM mode */
96 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED;
97 if (!adapter->ring_feature[RING_F_VMDQ].limit)
98 adapter->ring_feature[RING_F_VMDQ].limit = 1;
99 adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs;
100
c6bda30a
GR		 101 num_vf_macvlans = hw->mac.num_rar_entries -
102 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
103
104 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
105 sizeof(struct vf_macvlans),
106 GFP_KERNEL);
107 if (mv_list) {
108 /* Initialize list of VF macvlans */
109 INIT_LIST_HEAD(&adapter->vf_mvs.l);
110 for (i = 0; i < num_vf_macvlans; i++) {
111 mv_list->vf = -1;
112 mv_list->free = true;
113 mv_list->rar_entry = hw->mac.num_rar_entries -
114 (i + adapter->num_vfs + 1);
115 list_add(&mv_list->l, &adapter->vf_mvs.l);
116 mv_list++;
117 }
118 }
119
120 /* If call to enable VFs succeeded then allocate memory
121 * for per VF control structures.
122 */
123 adapter->vfinfo =
124 kcalloc(adapter->num_vfs,
125 sizeof(struct vf_data_storage), GFP_KERNEL);
126 if (adapter->vfinfo) {
127 /* Now that we're sure SR-IOV is enabled
128 * and memory allocated set up the mailbox parameters
129 */
130 ixgbe_init_mbx_params_pf(hw);
73079ea0
AD		 131 memcpy(&hw->mbx.ops, ii->mbx_ops, sizeof(hw->mbx.ops));
132
133 /* limit trafffic classes based on VFs enabled */
134 if ((adapter->hw.mac.type == ixgbe_mac_82599EB) &&
135 (adapter->num_vfs < 16)) {
136 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
137 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
138 } else if (adapter->num_vfs < 32) {
139 adapter->dcb_cfg.num_tcs.pg_tcs = 4;
140 adapter->dcb_cfg.num_tcs.pfc_tcs = 4;
141 } else {
142 adapter->dcb_cfg.num_tcs.pg_tcs = 1;
143 adapter->dcb_cfg.num_tcs.pfc_tcs = 1;
144 }
145
146 /* We do not support RSS w/ SR-IOV */
147 adapter->ring_feature[RING_F_RSS].limit = 1;
c6bda30a
GR		 148
149 /* Disable RSC when in SR-IOV mode */
150 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
151 IXGBE_FLAG2_RSC_ENABLED);
73079ea0 152
73079ea0 153 /* enable spoof checking for all VFs */
de4c7f65
GR		 154 for (i = 0; i < adapter->num_vfs; i++)
155 adapter->vfinfo[i].spoofchk_enabled = true;
c6bda30a
GR		 156 return;
157 }
158
159 /* Oh oh */
160 e_err(probe, "Unable to allocate memory for VF Data Storage - "
161 "SRIOV disabled\n");
99d74487 162 ixgbe_disable_sriov(adapter);
c6bda30a 163}
c6bda30a 164
9297127b
AD		 165static bool ixgbe_vfs_are_assigned(struct ixgbe_adapter *adapter)
166{
167 struct pci_dev *pdev = adapter->pdev;
168 struct pci_dev *vfdev;
169 int dev_id;
170
171 switch (adapter->hw.mac.type) {
172 case ixgbe_mac_82599EB:
173 dev_id = IXGBE_DEV_ID_82599_VF;
174 break;
175 case ixgbe_mac_X540:
176 dev_id = IXGBE_DEV_ID_X540_VF;
177 break;
178 default:
179 return false;
180 }
181
182 /* loop through all the VFs to see if we own any that are assigned */
183 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
184 while (vfdev) {
185 /* if we don't own it we don't care */
186 if (vfdev->is_virtfn && vfdev->physfn == pdev) {
187 /* if it is assigned we cannot release it */
188 if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
189 return true;
190 }
191
192 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev);
193 }
194
195 return false;
196}
197
198#endif /* #ifdef CONFIG_PCI_IOV */
c6bda30a
GR		 199void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
200{
201 struct ixgbe_hw *hw = &adapter->hw;
c6bda30a
GR		 202 u32 gpie;
203 u32 vmdctl;
c6bda30a 204
d773d131
AD		 205 /* set num VFs to 0 to prevent access to vfinfo */
206 adapter->num_vfs = 0;
207
208 /* free VF control structures */
209 kfree(adapter->vfinfo);
210 adapter->vfinfo = NULL;
211
212 /* free macvlan list */
213 kfree(adapter->mv_list);
214 adapter->mv_list = NULL;
215
99d74487
AD		 216 /* if SR-IOV is already disabled then there is nothing to do */
217 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
218 return;
219
c6bda30a 220#ifdef CONFIG_PCI_IOV
9297127b
AD		 221 /*
222 * If our VFs are assigned we cannot shut down SR-IOV
223 * without causing issues, so just leave the hardware
224 * available but disabled
225 */
226 if (ixgbe_vfs_are_assigned(adapter)) {
227 e_dev_warn("Unloading driver while VFs are assigned - VFs will not be deallocated\n");
228 return;
d47e12d6 229 }
c6bda30a
GR		 230 /* disable iov and allow time for transactions to clear */
231 pci_disable_sriov(adapter->pdev);
232#endif
233
234 /* turn off device IOV mode */
73079ea0 235 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, 0);
c6bda30a
GR		 236 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
237 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
238 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
239
240 /* set default pool back to 0 */
241 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
242 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
243 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
244 IXGBE_WRITE_FLUSH(hw);
245
1d9c0bfd
AD		 246 /* Disable VMDq flag so device will be set in VM mode */
247 if (adapter->ring_feature[RING_F_VMDQ].limit == 1)
248 adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
249 adapter->ring_feature[RING_F_VMDQ].offset = 0;
250
c6bda30a
GR		 251 /* take a breather then clean up driver data */
252 msleep(100);
253
c6bda30a
GR		 254 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
255}
256
5d5b7c39 257static int ixgbe_set_vf_multicasts(struct ixgbe_adapter *adapter,
58a02bee 258 u32 *msgbuf, u32 vf)
17367270 259{
58a02bee
AD		 260 int entries = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK)
261 >> IXGBE_VT_MSGINFO_SHIFT;
262 u16 *hash_list = (u16 *)&msgbuf[1];
17367270 263 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf];
8a07a22d 264 struct ixgbe_hw *hw = &adapter->hw;
17367270 265 int i;
8a07a22d
GR		 266 u32 vector_bit;
267 u32 vector_reg;
268 u32 mta_reg;
17367270
GR		 269
270 /* only so many hash values supported */
271 entries = min(entries, IXGBE_MAX_VF_MC_ENTRIES);
272
273 /*
274 * salt away the number of multi cast addresses assigned
275 * to this VF for later use to restore when the PF multi cast
276 * list changes
277 */
278 vfinfo->num_vf_mc_hashes = entries;
279
280 /*
281 * VFs are limited to using the MTA hash table for their multicast
282 * addresses
283 */
284 for (i = 0; i < entries; i++) {
e81a1ba8 285 vfinfo->vf_mc_hashes[i] = hash_list[i];
17367270
GR		 286 }
287
8a07a22d
GR		 288 for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
289 vector_reg = (vfinfo->vf_mc_hashes[i] >> 5) & 0x7F;
290 vector_bit = vfinfo->vf_mc_hashes[i] & 0x1F;
291 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
292 mta_reg |= (1 << vector_bit);
293 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
294 }
17367270
GR		 295
296 return 0;
297}
298
a1cbb15c
GR		 299static void ixgbe_restore_vf_macvlans(struct ixgbe_adapter *adapter)
300{
301 struct ixgbe_hw *hw = &adapter->hw;
302 struct list_head *pos;
303 struct vf_macvlans *entry;
304
305 list_for_each(pos, &adapter->vf_mvs.l) {
306 entry = list_entry(pos, struct vf_macvlans, l);
23677ce3 307 if (!entry->free)
a1cbb15c
GR		 308 hw->mac.ops.set_rar(hw, entry->rar_entry,
309 entry->vf_macvlan,
310 entry->vf, IXGBE_RAH_AV);
311 }
312}
313
17367270
GR		 314void ixgbe_restore_vf_multicasts(struct ixgbe_adapter *adapter)
315{
316 struct ixgbe_hw *hw = &adapter->hw;
317 struct vf_data_storage *vfinfo;
318 int i, j;
319 u32 vector_bit;
320 u32 vector_reg;
321 u32 mta_reg;
322
323 for (i = 0; i < adapter->num_vfs; i++) {
324 vfinfo = &adapter->vfinfo[i];
325 for (j = 0; j < vfinfo->num_vf_mc_hashes; j++) {
326 hw->addr_ctrl.mta_in_use++;
327 vector_reg = (vfinfo->vf_mc_hashes[j] >> 5) & 0x7F;
328 vector_bit = vfinfo->vf_mc_hashes[j] & 0x1F;
329 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
330 mta_reg |= (1 << vector_bit);
331 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
332 }
333 }
a1cbb15c
GR		 334
335 /* Restore any VF macvlans */
336 ixgbe_restore_vf_macvlans(adapter);
17367270
GR		 337}
338
5d5b7c39
ET		 339static int ixgbe_set_vf_vlan(struct ixgbe_adapter *adapter, int add, int vid,
340 u32 vf)
17367270 341{
b35d4d42
AD		 342 /* VLAN 0 is a special case, don't allow it to be removed */
343 if (!vid && !add)
344 return 0;
345
17367270
GR		 346 return adapter->hw.mac.ops.set_vfta(&adapter->hw, vid, vf, (bool)add);
347}
348
872844dd 349static s32 ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf)
e9f98072
GR		 350{
351 struct ixgbe_hw *hw = &adapter->hw;
872844dd 352 int max_frame = msgbuf[1];
e9f98072 353 u32 max_frs;
e9f98072 354
872844dd
AD		 355 /*
356 * For 82599EB we have to keep all PFs and VFs operating with
357 * the same max_frame value in order to avoid sending an oversize
358 * frame to a VF. In order to guarantee this is handled correctly
359 * for all cases we have several special exceptions to take into
360 * account before we can enable the VF for receive
361 */
362 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
363 struct net_device *dev = adapter->netdev;
364 int pf_max_frame = dev->mtu + ETH_HLEN;
365 u32 reg_offset, vf_shift, vfre;
366 s32 err = 0;
367
368#ifdef CONFIG_FCOE
369 if (dev->features & NETIF_F_FCOE_MTU)
370 pf_max_frame = max_t(int, pf_max_frame,
371 IXGBE_FCOE_JUMBO_FRAME_SIZE);
372
373#endif /* CONFIG_FCOE */
374 /*
375 * If the PF or VF are running w/ jumbo frames enabled we
376 * need to shut down the VF Rx path as we cannot support
377 * jumbo frames on legacy VFs
378 */
379 if ((pf_max_frame > ETH_FRAME_LEN) ||
380 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)))
381 err = -EINVAL;
382
383 /* determine VF receive enable location */
384 vf_shift = vf % 32;
385 reg_offset = vf / 32;
386
387 /* enable or disable receive depending on error */
388 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
389 if (err)
390 vfre &= ~(1 << vf_shift);
391 else
392 vfre |= 1 << vf_shift;
393 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), vfre);
394
395 if (err) {
396 e_err(drv, "VF max_frame %d out of range\n", max_frame);
397 return err;
398 }
399 }
e9f98072
GR		 400
401 /* MTU < 68 is an error and causes problems on some kernels */
872844dd
AD		 402 if (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE) {
403 e_err(drv, "VF max_frame %d out of range\n", max_frame);
404 return -EINVAL;
e9f98072
GR		 405 }
406
872844dd
AD		 407 /* pull current max frame size from hardware */
408 max_frs = IXGBE_READ_REG(hw, IXGBE_MAXFRS);
409 max_frs &= IXGBE_MHADD_MFS_MASK;
410 max_frs >>= IXGBE_MHADD_MFS_SHIFT;
411
412 if (max_frs < max_frame) {
413 max_frs = max_frame << IXGBE_MHADD_MFS_SHIFT;
e9f98072
GR		 414 IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, max_frs);
415 }
416
872844dd
AD		 417 e_info(hw, "VF requests change max MTU to %d\n", max_frame);
418
419 return 0;
e9f98072
GR		 420}
421
5d5b7c39 422static void ixgbe_set_vmolr(struct ixgbe_hw *hw, u32 vf, bool aupe)
17367270
GR		 423{
424 u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
f0412776 425 vmolr |= (IXGBE_VMOLR_ROMPE |
17367270 426 IXGBE_VMOLR_BAM);
f0412776
GR		 427 if (aupe)
428 vmolr |= IXGBE_VMOLR_AUPE;
429 else
430 vmolr &= ~IXGBE_VMOLR_AUPE;
17367270
GR		 431 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
432}
433
7f01648a
GR		 434static void ixgbe_set_vmvir(struct ixgbe_adapter *adapter, u32 vid, u32 vf)
435{
436 struct ixgbe_hw *hw = &adapter->hw;
437
438 if (vid)
439 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf),
440 (vid | IXGBE_VMVIR_VLANA_DEFAULT));
441 else
442 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf), 0);
443}
444
5d5b7c39 445static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
17367270
GR		 446{
447 struct ixgbe_hw *hw = &adapter->hw;
2850062a 448 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
17367270
GR		 449
450 /* reset offloads to defaults */
7f01648a
GR		 451 if (adapter->vfinfo[vf].pf_vlan) {
452 ixgbe_set_vf_vlan(adapter, true,
453 adapter->vfinfo[vf].pf_vlan, vf);
454 ixgbe_set_vmvir(adapter,
455 (adapter->vfinfo[vf].pf_vlan |
456 (adapter->vfinfo[vf].pf_qos <<
457 VLAN_PRIO_SHIFT)), vf);
458 ixgbe_set_vmolr(hw, vf, false);
459 } else {
b35d4d42 460 ixgbe_set_vf_vlan(adapter, true, 0, vf);
7f01648a
GR		 461 ixgbe_set_vmvir(adapter, 0, vf);
462 ixgbe_set_vmolr(hw, vf, true);
463 }
17367270
GR		 464
465 /* reset multicast table array for vf */
466 adapter->vfinfo[vf].num_vf_mc_hashes = 0;
467
468 /* Flush and reset the mta with the new values */
469 ixgbe_set_rx_mode(adapter->netdev);
470
2850062a 471 hw->mac.ops.clear_rar(hw, rar_entry);
17367270
GR		 472}
473
5d5b7c39
ET		 474static int ixgbe_set_vf_mac(struct ixgbe_adapter *adapter,
475 int vf, unsigned char *mac_addr)
17367270
GR		 476{
477 struct ixgbe_hw *hw = &adapter->hw;
2850062a 478 int rar_entry = hw->mac.num_rar_entries - (vf + 1);
17367270
GR		 479
480 memcpy(adapter->vfinfo[vf].vf_mac_addresses, mac_addr, 6);
2850062a 481 hw->mac.ops.set_rar(hw, rar_entry, mac_addr, vf, IXGBE_RAH_AV);
17367270
GR		 482
483 return 0;
484}
485
a1cbb15c
GR		 486static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
487 int vf, int index, unsigned char *mac_addr)
488{
489 struct ixgbe_hw *hw = &adapter->hw;
490 struct list_head *pos;
491 struct vf_macvlans *entry;
492
493 if (index <= 1) {
494 list_for_each(pos, &adapter->vf_mvs.l) {
495 entry = list_entry(pos, struct vf_macvlans, l);
496 if (entry->vf == vf) {
497 entry->vf = -1;
498 entry->free = true;
499 entry->is_macvlan = false;
500 hw->mac.ops.clear_rar(hw, entry->rar_entry);
501 }
502 }
503 }
504
505 /*
506 * If index was zero then we were asked to clear the uc list
507 * for the VF. We're done.
508 */
509 if (!index)
510 return 0;
511
512 entry = NULL;
513
514 list_for_each(pos, &adapter->vf_mvs.l) {
515 entry = list_entry(pos, struct vf_macvlans, l);
516 if (entry->free)
517 break;
518 }
519
520 /*
521 * If we traversed the entire list and didn't find a free entry
522 * then we're out of space on the RAR table. Also entry may
523 * be NULL because the original memory allocation for the list
524 * failed, which is not fatal but does mean we can't support
525 * VF requests for MACVLAN because we couldn't allocate
526 * memory for the list management required.
527 */
528 if (!entry || !entry->free)
529 return -ENOSPC;
530
531 entry->free = false;
532 entry->is_macvlan = true;
533 entry->vf = vf;
534 memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
535
536 hw->mac.ops.set_rar(hw, entry->rar_entry, mac_addr, vf, IXGBE_RAH_AV);
537
538 return 0;
539}
540
17367270
GR		 541int ixgbe_vf_configuration(struct pci_dev *pdev, unsigned int event_mask)
542{
543 unsigned char vf_mac_addr[6];
c60fbb00 544 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
17367270
GR		 545 unsigned int vfn = (event_mask & 0x3f);
546
547 bool enable = ((event_mask & 0x10000000U) != 0);
548
549 if (enable) {
7efd26d0 550 eth_random_addr(vf_mac_addr);
396e799c
ET		 551 e_info(probe, "IOV: VF %d is enabled MAC %pM\n",
552 vfn, vf_mac_addr);
17367270
GR		 553 /*
554 * Store away the VF "permananet" MAC address, it will ask
555 * for it later.
556 */
557 memcpy(adapter->vfinfo[vfn].vf_mac_addresses, vf_mac_addr, 6);
558 }
559
560 return 0;
561}
562
58a02bee 563static int ixgbe_vf_reset_msg(struct ixgbe_adapter *adapter, u32 vf)
17367270
GR		 564{
565 struct ixgbe_hw *hw = &adapter->hw;
58a02bee
AD		 566 unsigned char *vf_mac = adapter->vfinfo[vf].vf_mac_addresses;
567 u32 reg, msgbuf[4];
17367270 568 u32 reg_offset, vf_shift;
58a02bee
AD		 569 u8 *addr = (u8 *)(&msgbuf[1]);
570
571 e_info(probe, "VF Reset msg received from vf %d\n", vf);
572
573 /* reset the filters for the device */
574 ixgbe_vf_reset_event(adapter, vf);
575
576 /* set vf mac address */
577 ixgbe_set_vf_mac(adapter, vf, vf_mac);
17367270
GR		 578
579 vf_shift = vf % 32;
580 reg_offset = vf / 32;
581
58a02bee 582 /* enable transmit for vf */
17367270 583 reg = IXGBE_READ_REG(hw, IXGBE_VFTE(reg_offset));
872844dd 584 reg |= 1 << vf_shift;
17367270
GR		 585 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), reg);
586
58a02bee 587 /* enable receive for vf */
17367270 588 reg = IXGBE_READ_REG(hw, IXGBE_VFRE(reg_offset));
872844dd
AD		 589 reg |= 1 << vf_shift;
590 /*
591 * The 82599 cannot support a mix of jumbo and non-jumbo PF/VFs.
592 * For more info take a look at ixgbe_set_vf_lpe
593 */
594 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
595 struct net_device *dev = adapter->netdev;
596 int pf_max_frame = dev->mtu + ETH_HLEN;
597
598#ifdef CONFIG_FCOE
599 if (dev->features & NETIF_F_FCOE_MTU)
600 pf_max_frame = max_t(int, pf_max_frame,
601 IXGBE_FCOE_JUMBO_FRAME_SIZE);
602
603#endif /* CONFIG_FCOE */
604 if (pf_max_frame > ETH_FRAME_LEN)
605 reg &= ~(1 << vf_shift);
606 }
17367270
GR		 607 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), reg);
608
58a02bee
AD		 609 /* enable VF mailbox for further messages */
610 adapter->vfinfo[vf].clear_to_send = true;
611
a985b6c3
GR		 612 /* Enable counting of spoofed packets in the SSVPC register */
613 reg = IXGBE_READ_REG(hw, IXGBE_VMECM(reg_offset));
614 reg |= (1 << vf_shift);
615 IXGBE_WRITE_REG(hw, IXGBE_VMECM(reg_offset), reg);
616
58a02bee
AD		 617 /* reply to reset with ack and vf mac address */
618 msgbuf[0] = IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK;
619 memcpy(addr, vf_mac, ETH_ALEN);
620
621 /*
622 * Piggyback the multicast filter type so VF can compute the
623 * correct vectors
624 */
625 msgbuf[3] = hw->mac.mc_filter_type;
626 ixgbe_write_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN, vf);
627
628 return 0;
629}
630
631static int ixgbe_set_vf_mac_addr(struct ixgbe_adapter *adapter,
632 u32 *msgbuf, u32 vf)
633{
634 u8 *new_mac = ((u8 *)(&msgbuf[1]));
635
636 if (!is_valid_ether_addr(new_mac)) {
637 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
638 return -1;
639 }
640
641 if (adapter->vfinfo[vf].pf_set_mac &&
642 memcmp(adapter->vfinfo[vf].vf_mac_addresses, new_mac,
643 ETH_ALEN)) {
644 e_warn(drv,
645 "VF %d attempted to override administratively set MAC address\n"
646 "Reload the VF driver to resume operations\n",
647 vf);
648 return -1;
649 }
650
651 return ixgbe_set_vf_mac(adapter, vf, new_mac);
652}
653
654static int ixgbe_set_vf_vlan_msg(struct ixgbe_adapter *adapter,
655 u32 *msgbuf, u32 vf)
656{
657 struct ixgbe_hw *hw = &adapter->hw;
658 int add = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT;
659 int vid = (msgbuf[1] & IXGBE_VLVF_VLANID_MASK);
660 int err;
661
662 if (adapter->vfinfo[vf].pf_vlan) {
663 e_warn(drv,
664 "VF %d attempted to override administratively set VLAN configuration\n"
665 "Reload the VF driver to resume operations\n",
666 vf);
667 return -1;
668 }
669
670 if (add)
671 adapter->vfinfo[vf].vlan_count++;
672 else if (adapter->vfinfo[vf].vlan_count)
673 adapter->vfinfo[vf].vlan_count--;
674
675 err = ixgbe_set_vf_vlan(adapter, add, vid, vf);
676 if (!err && adapter->vfinfo[vf].spoofchk_enabled)
677 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
678
679 return err;
680}
681
682static int ixgbe_set_vf_macvlan_msg(struct ixgbe_adapter *adapter,
683 u32 *msgbuf, u32 vf)
684{
685 u8 *new_mac = ((u8 *)(&msgbuf[1]));
686 int index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
687 IXGBE_VT_MSGINFO_SHIFT;
688 int err;
689
690 if (adapter->vfinfo[vf].pf_set_mac && index > 0) {
691 e_warn(drv,
692 "VF %d requested MACVLAN filter but is administratively denied\n",
693 vf);
694 return -1;
695 }
696
697 /* An non-zero index indicates the VF is setting a filter */
698 if (index) {
699 if (!is_valid_ether_addr(new_mac)) {
700 e_warn(drv, "VF %d attempted to set invalid mac\n", vf);
701 return -1;
702 }
703
704 /*
705 * If the VF is allowed to set MAC filters then turn off
706 * anti-spoofing to avoid false positives.
707 */
708 if (adapter->vfinfo[vf].spoofchk_enabled)
709 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, vf, false);
710 }
711
712 err = ixgbe_set_vf_macvlan(adapter, vf, index, new_mac);
713 if (err == -ENOSPC)
714 e_warn(drv,
715 "VF %d has requested a MACVLAN filter but there is no space for it\n",
716 vf);
717 return err;
17367270
GR		 718}
719
720static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
721{
722 u32 mbx_size = IXGBE_VFMAILBOX_SIZE;
c050999e 723 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
17367270
GR		 724 struct ixgbe_hw *hw = &adapter->hw;
725 s32 retval;
17367270
GR		 726
727 retval = ixgbe_read_mbx(hw, msgbuf, mbx_size, vf);
728
dcaccc82 729 if (retval) {
849c4542 730 pr_err("Error receiving message from VF\n");
dcaccc82
AD		 731 return retval;
732 }
17367270
GR		 733
734 /* this is a message we already processed, do nothing */
735 if (msgbuf[0] & (IXGBE_VT_MSGTYPE_ACK | IXGBE_VT_MSGTYPE_NACK))
736 return retval;
737
dcaccc82
AD		 738 /* flush the ack before we write any messages back */
739 IXGBE_WRITE_FLUSH(hw);
740
17367270
GR		 741 /*
742 * until the vf completes a virtual function reset it should not be
743 * allowed to start any configuration.
744 */
745
58a02bee
AD		 746 if (msgbuf[0] == IXGBE_VF_RESET)
747 return ixgbe_vf_reset_msg(adapter, vf);
17367270
GR		 748
749 if (!adapter->vfinfo[vf].clear_to_send) {
750 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
751 ixgbe_write_mbx(hw, msgbuf, 1, vf);
752 return retval;
753 }
754
755 switch ((msgbuf[0] & 0xFFFF)) {
756 case IXGBE_VF_SET_MAC_ADDR:
58a02bee 757 retval = ixgbe_set_vf_mac_addr(adapter, msgbuf, vf);
17367270
GR		 758 break;
759 case IXGBE_VF_SET_MULTICAST:
58a02bee
AD		 760 retval = ixgbe_set_vf_multicasts(adapter, msgbuf, vf);
761 break;
762 case IXGBE_VF_SET_VLAN:
763 retval = ixgbe_set_vf_vlan_msg(adapter, msgbuf, vf);
17367270
GR		 764 break;
765 case IXGBE_VF_SET_LPE:
872844dd 766 retval = ixgbe_set_vf_lpe(adapter, msgbuf, vf);
17367270 767 break;
a1cbb15c 768 case IXGBE_VF_SET_MACVLAN:
58a02bee 769 retval = ixgbe_set_vf_macvlan_msg(adapter, msgbuf, vf);
a1cbb15c 770 break;
17367270 771 default:
396e799c 772 e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]);
17367270
GR		 773 retval = IXGBE_ERR_MBX;
774 break;
775 }
776
777 /* notify the VF of the results of what it sent us */
778 if (retval)
779 msgbuf[0] |= IXGBE_VT_MSGTYPE_NACK;
780 else
781 msgbuf[0] |= IXGBE_VT_MSGTYPE_ACK;
782
783 msgbuf[0] |= IXGBE_VT_MSGTYPE_CTS;
784
785 ixgbe_write_mbx(hw, msgbuf, 1, vf);
786
787 return retval;
788}
789
790static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter *adapter, u32 vf)
791{
792 struct ixgbe_hw *hw = &adapter->hw;
793 u32 msg = IXGBE_VT_MSGTYPE_NACK;
794
795 /* if device isn't clear to send it shouldn't be reading either */
796 if (!adapter->vfinfo[vf].clear_to_send)
797 ixgbe_write_mbx(hw, &msg, 1, vf);
798}
799
800void ixgbe_msg_task(struct ixgbe_adapter *adapter)
801{
802 struct ixgbe_hw *hw = &adapter->hw;
803 u32 vf;
804
805 for (vf = 0; vf < adapter->num_vfs; vf++) {
806 /* process any reset requests */
807 if (!ixgbe_check_for_rst(hw, vf))
808 ixgbe_vf_reset_event(adapter, vf);
809
810 /* process any messages pending */
811 if (!ixgbe_check_for_msg(hw, vf))
812 ixgbe_rcv_msg_from_vf(adapter, vf);
813
814 /* process any acks */
815 if (!ixgbe_check_for_ack(hw, vf))
816 ixgbe_rcv_ack_from_vf(adapter, vf);
817 }
818}
819
767081ad
GR		 820void ixgbe_disable_tx_rx(struct ixgbe_adapter *adapter)
821{
822 struct ixgbe_hw *hw = &adapter->hw;
823
824 /* disable transmit and receive for all vfs */
825 IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), 0);
826 IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), 0);
827
828 IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), 0);
829 IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), 0);
830}
831
832void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
833{
834 struct ixgbe_hw *hw = &adapter->hw;
835 u32 ping;
836 int i;
837
838 for (i = 0 ; i < adapter->num_vfs; i++) {
839 ping = IXGBE_PF_CONTROL_MSG;
840 if (adapter->vfinfo[i].clear_to_send)
841 ping |= IXGBE_VT_MSGTYPE_CTS;
842 ixgbe_write_mbx(hw, &ping, 1, i);
843 }
844}
845
7f01648a
GR		 846int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
847{
848 struct ixgbe_adapter *adapter = netdev_priv(netdev);
849 if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
850 return -EINVAL;
851 adapter->vfinfo[vf].pf_set_mac = true;
852 dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
853 dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
854 " change effective.");
855 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
856 dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
857 " but the PF device is not up.\n");
858 dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
859 " attempting to use the VF device.\n");
860 }
861 return ixgbe_set_vf_mac(adapter, vf, mac);
862}
863
864int ixgbe_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
865{
866 int err = 0;
867 struct ixgbe_adapter *adapter = netdev_priv(netdev);
a985b6c3 868 struct ixgbe_hw *hw = &adapter->hw;
7f01648a
GR		 869
870 if ((vf >= adapter->num_vfs) || (vlan > 4095) || (qos > 7))
871 return -EINVAL;
872 if (vlan || qos) {
873 err = ixgbe_set_vf_vlan(adapter, true, vlan, vf);
874 if (err)
875 goto out;
876 ixgbe_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf);
a985b6c3 877 ixgbe_set_vmolr(hw, vf, false);
de4c7f65 878 if (adapter->vfinfo[vf].spoofchk_enabled)
a1cbb15c 879 hw->mac.ops.set_vlan_anti_spoofing(hw, true, vf);
de4c7f65 880 adapter->vfinfo[vf].vlan_count++;
7f01648a
GR		 881 adapter->vfinfo[vf].pf_vlan = vlan;
882 adapter->vfinfo[vf].pf_qos = qos;
883 dev_info(&adapter->pdev->dev,
884 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf);
885 if (test_bit(__IXGBE_DOWN, &adapter->state)) {
886 dev_warn(&adapter->pdev->dev,
887 "The VF VLAN has been set,"
888 " but the PF device is not up.\n");
889 dev_warn(&adapter->pdev->dev,
890 "Bring the PF device up before"
891 " attempting to use the VF device.\n");
892 }
893 } else {
894 err = ixgbe_set_vf_vlan(adapter, false,
895 adapter->vfinfo[vf].pf_vlan, vf);
896 ixgbe_set_vmvir(adapter, vlan, vf);
a985b6c3
GR		 897 ixgbe_set_vmolr(hw, vf, true);
898 hw->mac.ops.set_vlan_anti_spoofing(hw, false, vf);
de4c7f65
GR		 899 if (adapter->vfinfo[vf].vlan_count)
900 adapter->vfinfo[vf].vlan_count--;
7f01648a
GR		 901 adapter->vfinfo[vf].pf_vlan = 0;
902 adapter->vfinfo[vf].pf_qos = 0;
903 }
904out:
905 return err;
906}
907
9f66d3ee 908static int ixgbe_link_mbps(struct ixgbe_adapter *adapter)
ff4ab206 909{
9f66d3ee 910 switch (adapter->link_speed) {
ff4ab206
LL		 911 case IXGBE_LINK_SPEED_100_FULL:
912 return 100;
913 case IXGBE_LINK_SPEED_1GB_FULL:
914 return 1000;
915 case IXGBE_LINK_SPEED_10GB_FULL:
916 return 10000;
917 default:
918 return 0;
919 }
920}
921
9f66d3ee 922static void ixgbe_set_vf_rate_limit(struct ixgbe_adapter *adapter, int vf)
ff4ab206 923{
9f66d3ee
AD		 924 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
925 struct ixgbe_hw *hw = &adapter->hw;
926 u32 bcnrc_val = 0;
927 u16 queue, queues_per_pool;
928 u16 tx_rate = adapter->vfinfo[vf].tx_rate;
929
930 if (tx_rate) {
931 /* start with base link speed value */
932 bcnrc_val = adapter->vf_rate_link_speed;
ff4ab206 933
ff4ab206 934 /* Calculate the rate factor values to set */
9f66d3ee
AD		 935 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
936 bcnrc_val /= tx_rate;
937
938 /* clear everything but the rate factor */
939 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
940 IXGBE_RTTBCNRC_RF_DEC_MASK;
941
942 /* enable the rate scheduler */
943 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
ff4ab206
LL		 944 }
945
7555e83d
LL		 946 /*
947 * Set global transmit compensation time to the MMW_SIZE in RTTBCNRM
948 * register. Typically MMW_SIZE=0x014 if 9728-byte jumbo is supported
949 * and 0x004 otherwise.
950 */
951 switch (hw->mac.type) {
952 case ixgbe_mac_82599EB:
953 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x4);
954 break;
955 case ixgbe_mac_X540:
956 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRM, 0x14);
957 break;
958 default:
959 break;
960 }
961
9f66d3ee
AD		 962 /* determine how many queues per pool based on VMDq mask */
963 queues_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
964
965 /* write value for all Tx queues belonging to VF */
966 for (queue = 0; queue < queues_per_pool; queue++) {
967 unsigned int reg_idx = (vf * queues_per_pool) + queue;
968
969 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, reg_idx);
970 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
971 }
ff4ab206
LL		 972}
973
974void ixgbe_check_vf_rate_limit(struct ixgbe_adapter *adapter)
975{
9f66d3ee 976 int i;
ff4ab206
LL		 977
978 /* VF Tx rate limit was not set */
9f66d3ee 979 if (!adapter->vf_rate_link_speed)
ff4ab206
LL		 980 return;
981
9f66d3ee 982 if (ixgbe_link_mbps(adapter) != adapter->vf_rate_link_speed) {
ff4ab206
LL		 983 adapter->vf_rate_link_speed = 0;
984 dev_info(&adapter->pdev->dev,
9f66d3ee 985 "Link speed has been changed. VF Transmit rate is disabled\n");
ff4ab206
LL		 986 }
987
988 for (i = 0; i < adapter->num_vfs; i++) {
9f66d3ee 989 if (!adapter->vf_rate_link_speed)
ff4ab206
LL		 990 adapter->vfinfo[i].tx_rate = 0;
991
9f66d3ee 992 ixgbe_set_vf_rate_limit(adapter, i);
ff4ab206
LL		 993 }
994}
995
7f01648a
GR		 996int ixgbe_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate)
997{
ff4ab206 998 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9f66d3ee
AD		 999 int link_speed;
1000
1001 /* verify VF is active */
1002 if (vf >= adapter->num_vfs)
1003 return -EINVAL;
1004
1005 /* verify link is up */
1006 if (!adapter->link_up)
1007 return -EINVAL;
1008
1009 /* verify we are linked at 10Gbps */
1010 link_speed = ixgbe_link_mbps(adapter);
1011 if (link_speed != 10000)
1012 return -EINVAL;
ff4ab206 1013
9f66d3ee
AD		 1014 /* rate limit cannot be less than 10Mbs or greater than link speed */
1015 if (tx_rate && ((tx_rate <= 10) || (tx_rate > link_speed)))
ff4ab206
LL		 1016 return -EINVAL;
1017
9f66d3ee
AD		 1018 /* store values */
1019 adapter->vf_rate_link_speed = link_speed;
1020 adapter->vfinfo[vf].tx_rate = tx_rate;
1021
1022 /* update hardware configuration */
1023 ixgbe_set_vf_rate_limit(adapter, vf);
ff4ab206
LL		 1024
1025 return 0;
7f01648a
GR		 1026}
1027
de4c7f65
GR		 1028int ixgbe_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, bool setting)
1029{
1030 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1031 int vf_target_reg = vf >> 3;
1032 int vf_target_shift = vf % 8;
1033 struct ixgbe_hw *hw = &adapter->hw;
1034 u32 regval;
1035
1036 adapter->vfinfo[vf].spoofchk_enabled = setting;
1037
1038 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1039 regval &= ~(1 << vf_target_shift);
1040 regval |= (setting << vf_target_shift);
1041 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1042
1043 if (adapter->vfinfo[vf].vlan_count) {
1044 vf_target_shift += IXGBE_SPOOF_VLANAS_SHIFT;
1045 regval = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
1046 regval &= ~(1 << vf_target_shift);
1047 regval |= (setting << vf_target_shift);
1048 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), regval);
1049 }
1050
1051 return 0;
1052}
1053
7f01648a
GR		 1054int ixgbe_ndo_get_vf_config(struct net_device *netdev,
1055 int vf, struct ifla_vf_info *ivi)
1056{
1057 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1058 if (vf >= adapter->num_vfs)
1059 return -EINVAL;
1060 ivi->vf = vf;
1061 memcpy(&ivi->mac, adapter->vfinfo[vf].vf_mac_addresses, ETH_ALEN);
ff4ab206 1062 ivi->tx_rate = adapter->vfinfo[vf].tx_rate;
7f01648a
GR		 1063 ivi->vlan = adapter->vfinfo[vf].pf_vlan;
1064 ivi->qos = adapter->vfinfo[vf].pf_qos;
de4c7f65 1065 ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
7f01648a
GR		 1066 return 0;
1067}
Linux 6.x block layer and io_uring tree(s)