1 // SPDX-License-Identifier: GPL-2.0-only
2 /****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2015 Solarflare Communications Inc.
5 */
6 #include <linux/etherdevice.h>
7 #include <linux/pci.h>
8 #include <linux/module.h>
9 #include "net_driver.h"
10 #include "ef10_sriov.h"
11 #include "efx.h"
12 #include "nic.h"
13 #include "mcdi_pcol.h"
14
efx_ef10_evb_port_assign(struct efx_nic * efx,unsigned int port_id,unsigned int vf_fn)15 static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
16 unsigned int vf_fn)
17 {
18 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
19 struct efx_ef10_nic_data *nic_data = efx->nic_data;
20
21 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
22 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
23 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
24 EVB_PORT_ASSIGN_IN_VF, vf_fn);
25
26 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
27 NULL, 0, NULL);
28 }
29
efx_ef10_vswitch_alloc(struct efx_nic * efx,unsigned int port_id,unsigned int vswitch_type)30 static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
31 unsigned int vswitch_type)
32 {
33 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
34 int rc;
35
36 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
37 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
38 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
39 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
40 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);
41
42 /* Quietly try to allocate 2 VLAN tags */
43 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
44 NULL, 0, NULL);
45
46 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
47 if (rc == -EPROTO) {
48 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
49 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
50 sizeof(inbuf), NULL, 0, NULL);
51 } else if (rc) {
52 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
53 MC_CMD_VSWITCH_ALLOC_IN_LEN,
54 NULL, 0, rc);
55 }
56 return rc;
57 }
58
efx_ef10_vswitch_free(struct efx_nic * efx,unsigned int port_id)59 static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
60 {
61 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);
62
63 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);
64
65 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
66 NULL, 0, NULL);
67 }
68
efx_ef10_vport_alloc(struct efx_nic * efx,unsigned int port_id_in,unsigned int vport_type,u16 vlan,unsigned int * port_id_out)69 static int efx_ef10_vport_alloc(struct efx_nic *efx,
70 unsigned int port_id_in,
71 unsigned int vport_type,
72 u16 vlan,
73 unsigned int *port_id_out)
74 {
75 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
76 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
77 size_t outlen;
78 int rc;
79
80 EFX_WARN_ON_PARANOID(!port_id_out);
81
82 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
83 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
84 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
85 (vlan != EFX_EF10_NO_VLAN));
86 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
87 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
88 if (vlan != EFX_EF10_NO_VLAN)
89 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
90 VPORT_ALLOC_IN_VLAN_TAG_0, vlan);
91
92 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
93 outbuf, sizeof(outbuf), &outlen);
94 if (rc)
95 return rc;
96 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
97 return -EIO;
98
99 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
100 return 0;
101 }
102
efx_ef10_vport_free(struct efx_nic * efx,unsigned int port_id)103 static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
104 {
105 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);
106
107 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);
108
109 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
110 NULL, 0, NULL);
111 }
112
efx_ef10_sriov_free_vf_vports(struct efx_nic * efx)113 static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
114 {
115 struct efx_ef10_nic_data *nic_data = efx->nic_data;
116 int i;
117
118 if (!nic_data->vf)
119 return;
120
121 for (i = 0; i < efx->vf_count; i++) {
122 struct ef10_vf *vf = nic_data->vf + i;
123
124 /* If VF is assigned, do not free the vport */
125 if (vf->pci_dev &&
126 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
127 continue;
128
129 if (vf->vport_assigned) {
130 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
131 vf->vport_assigned = 0;
132 }
133
134 if (!is_zero_ether_addr(vf->mac)) {
135 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
136 eth_zero_addr(vf->mac);
137 }
138
139 if (vf->vport_id) {
140 efx_ef10_vport_free(efx, vf->vport_id);
141 vf->vport_id = 0;
142 }
143
144 vf->efx = NULL;
145 }
146 }
147
efx_ef10_sriov_free_vf_vswitching(struct efx_nic * efx)148 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
149 {
150 struct efx_ef10_nic_data *nic_data = efx->nic_data;
151
152 efx_ef10_sriov_free_vf_vports(efx);
153 kfree(nic_data->vf);
154 nic_data->vf = NULL;
155 }
156
efx_ef10_sriov_assign_vf_vport(struct efx_nic * efx,unsigned int vf_i)157 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
158 unsigned int vf_i)
159 {
160 struct efx_ef10_nic_data *nic_data = efx->nic_data;
161 struct ef10_vf *vf = nic_data->vf + vf_i;
162 int rc;
163
164 if (WARN_ON_ONCE(!nic_data->vf))
165 return -EOPNOTSUPP;
166
167 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
168 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
169 vf->vlan, &vf->vport_id);
170 if (rc)
171 return rc;
172
173 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
174 if (rc) {
175 eth_zero_addr(vf->mac);
176 return rc;
177 }
178
179 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
180 if (rc)
181 return rc;
182
183 vf->vport_assigned = 1;
184 return 0;
185 }
186
efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic * efx)187 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
188 {
189 struct efx_ef10_nic_data *nic_data = efx->nic_data;
190 unsigned int i;
191 int rc;
192
193 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
194 GFP_KERNEL);
195 if (!nic_data->vf)
196 return -ENOMEM;
197
198 for (i = 0; i < efx->vf_count; i++) {
199 eth_random_addr(nic_data->vf[i].mac);
200 nic_data->vf[i].efx = NULL;
201 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;
202
203 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
204 if (rc)
205 goto fail;
206 }
207
208 return 0;
209 fail:
210 efx_ef10_sriov_free_vf_vports(efx);
211 kfree(nic_data->vf);
212 nic_data->vf = NULL;
213 return rc;
214 }
215
efx_ef10_sriov_restore_vf_vswitching(struct efx_nic * efx)216 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
217 {
218 unsigned int i;
219 int rc;
220
221 for (i = 0; i < efx->vf_count; i++) {
222 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
223 if (rc)
224 goto fail;
225 }
226
227 return 0;
228 fail:
229 efx_ef10_sriov_free_vf_vswitching(efx);
230 return rc;
231 }
232
efx_ef10_vadaptor_alloc_set_features(struct efx_nic * efx)233 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
234 {
235 u32 port_flags;
236 int rc;
237
238 rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id);
239 if (rc)
240 goto fail_vadaptor_alloc;
241
242 rc = efx_ef10_vadaptor_query(efx, efx->vport_id,
243 &port_flags, NULL, NULL);
244 if (rc)
245 goto fail_vadaptor_query;
246
247 if (port_flags &
248 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN))
249 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
250 else
251 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
252
253 return 0;
254
255 fail_vadaptor_query:
256 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
257 fail_vadaptor_alloc:
258 return rc;
259 }
260
261 /* On top of the default firmware vswitch setup, create a VEB vswitch and
262 * expansion vport for use by this function.
263 */
efx_ef10_vswitching_probe_pf(struct efx_nic * efx)264 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
265 {
266 struct efx_ef10_nic_data *nic_data = efx->nic_data;
267 struct net_device *net_dev = efx->net_dev;
268 int rc;
269
270 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
271 /* vswitch not needed as we have no VFs */
272 efx_ef10_vadaptor_alloc_set_features(efx);
273 return 0;
274 }
275
276 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
277 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
278 if (rc)
279 goto fail1;
280
281 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
282 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
283 EFX_EF10_NO_VLAN, &efx->vport_id);
284 if (rc)
285 goto fail2;
286
287 rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr);
288 if (rc)
289 goto fail3;
290 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
291
292 rc = efx_ef10_vadaptor_alloc_set_features(efx);
293 if (rc)
294 goto fail4;
295
296 return 0;
297 fail4:
298 efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac);
299 eth_zero_addr(nic_data->vport_mac);
300 fail3:
301 efx_ef10_vport_free(efx, efx->vport_id);
302 efx->vport_id = EVB_PORT_ID_ASSIGNED;
303 fail2:
304 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
305 fail1:
306 return rc;
307 }
308
efx_ef10_vswitching_probe_vf(struct efx_nic * efx)309 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
310 {
311 return efx_ef10_vadaptor_alloc_set_features(efx);
312 }
313
efx_ef10_vswitching_restore_pf(struct efx_nic * efx)314 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
315 {
316 struct efx_ef10_nic_data *nic_data = efx->nic_data;
317 int rc;
318
319 if (!nic_data->must_probe_vswitching)
320 return 0;
321
322 rc = efx_ef10_vswitching_probe_pf(efx);
323 if (rc)
324 goto fail;
325
326 rc = efx_ef10_sriov_restore_vf_vswitching(efx);
327 if (rc)
328 goto fail;
329
330 nic_data->must_probe_vswitching = false;
331 fail:
332 return rc;
333 }
334
efx_ef10_vswitching_restore_vf(struct efx_nic * efx)335 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
336 {
337 struct efx_ef10_nic_data *nic_data = efx->nic_data;
338 int rc;
339
340 if (!nic_data->must_probe_vswitching)
341 return 0;
342
343 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
344 if (rc)
345 return rc;
346
347 nic_data->must_probe_vswitching = false;
348 return 0;
349 }
350
efx_ef10_vswitching_remove_pf(struct efx_nic * efx)351 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
352 {
353 struct efx_ef10_nic_data *nic_data = efx->nic_data;
354
355 efx_ef10_sriov_free_vf_vswitching(efx);
356
357 efx_ef10_vadaptor_free(efx, efx->vport_id);
358
359 if (efx->vport_id == EVB_PORT_ID_ASSIGNED)
360 return; /* No vswitch was ever created */
361
362 if (!is_zero_ether_addr(nic_data->vport_mac)) {
363 efx_ef10_vport_del_mac(efx, efx->vport_id,
364 efx->net_dev->dev_addr);
365 eth_zero_addr(nic_data->vport_mac);
366 }
367 efx_ef10_vport_free(efx, efx->vport_id);
368 efx->vport_id = EVB_PORT_ID_ASSIGNED;
369
370 /* Only free the vswitch if no VFs are assigned */
371 if (!pci_vfs_assigned(efx->pci_dev))
372 efx_ef10_vswitch_free(efx, efx->vport_id);
373 }
374
efx_ef10_vswitching_remove_vf(struct efx_nic * efx)375 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
376 {
377 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
378 }
379
efx_ef10_pci_sriov_enable(struct efx_nic * efx,int num_vfs)380 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
381 {
382 int rc = 0;
383 struct pci_dev *dev = efx->pci_dev;
384
385 efx->vf_count = num_vfs;
386
387 rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
388 if (rc)
389 goto fail1;
390
391 rc = pci_enable_sriov(dev, num_vfs);
392 if (rc)
393 goto fail2;
394
395 return 0;
396 fail2:
397 efx_ef10_sriov_free_vf_vswitching(efx);
398 fail1:
399 efx->vf_count = 0;
400 netif_err(efx, probe, efx->net_dev,
401 "Failed to enable SRIOV VFs\n");
402 return rc;
403 }
404
efx_ef10_pci_sriov_disable(struct efx_nic * efx,bool force)405 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
406 {
407 struct pci_dev *dev = efx->pci_dev;
408 unsigned int vfs_assigned = 0;
409
410 vfs_assigned = pci_vfs_assigned(dev);
411
412 if (vfs_assigned && !force) {
413 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
414 "please detach them before disabling SR-IOV\n");
415 return -EBUSY;
416 }
417
418 if (!vfs_assigned)
419 pci_disable_sriov(dev);
420
421 efx_ef10_sriov_free_vf_vswitching(efx);
422 efx->vf_count = 0;
423 return 0;
424 }
425
efx_ef10_sriov_configure(struct efx_nic * efx,int num_vfs)426 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
427 {
428 if (num_vfs == 0)
429 return efx_ef10_pci_sriov_disable(efx, false);
430 else
431 return efx_ef10_pci_sriov_enable(efx, num_vfs);
432 }
433
efx_ef10_sriov_init(struct efx_nic * efx)434 int efx_ef10_sriov_init(struct efx_nic *efx)
435 {
436 return 0;
437 }
438
efx_ef10_sriov_fini(struct efx_nic * efx)439 void efx_ef10_sriov_fini(struct efx_nic *efx)
440 {
441 struct efx_ef10_nic_data *nic_data = efx->nic_data;
442 unsigned int i;
443 int rc;
444
445 if (!nic_data->vf) {
446 /* Remove any un-assigned orphaned VFs */
447 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
448 pci_disable_sriov(efx->pci_dev);
449 return;
450 }
451
452 /* Remove any VFs in the host */
453 for (i = 0; i < efx->vf_count; ++i) {
454 struct efx_nic *vf_efx = nic_data->vf[i].efx;
455
456 if (vf_efx)
457 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
458 }
459
460 rc = efx_ef10_pci_sriov_disable(efx, true);
461 if (rc)
462 netif_dbg(efx, drv, efx->net_dev,
463 "Disabling SRIOV was not successful rc=%d\n", rc);
464 else
465 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
466 }
467
efx_ef10_vport_del_vf_mac(struct efx_nic * efx,unsigned int port_id,u8 * mac)468 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
469 u8 *mac)
470 {
471 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
472 MCDI_DECLARE_BUF_ERR(outbuf);
473 size_t outlen;
474 int rc;
475
476 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
477 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
478
479 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
480 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
481
482 return rc;
483 }
484
efx_ef10_sriov_set_vf_mac(struct efx_nic * efx,int vf_i,u8 * mac)485 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac)
486 {
487 struct efx_ef10_nic_data *nic_data = efx->nic_data;
488 struct ef10_vf *vf;
489 int rc;
490
491 if (!nic_data->vf)
492 return -EOPNOTSUPP;
493
494 if (vf_i >= efx->vf_count)
495 return -EINVAL;
496 vf = nic_data->vf + vf_i;
497
498 if (vf->efx) {
499 efx_device_detach_sync(vf->efx);
500 efx_net_stop(vf->efx->net_dev);
501
502 down_write(&vf->efx->filter_sem);
503 vf->efx->type->filter_table_remove(vf->efx);
504
505 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
506 if (rc) {
507 up_write(&vf->efx->filter_sem);
508 return rc;
509 }
510 }
511
512 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
513 if (rc)
514 return rc;
515
516 if (!is_zero_ether_addr(vf->mac)) {
517 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
518 if (rc)
519 return rc;
520 }
521
522 if (!is_zero_ether_addr(mac)) {
523 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
524 if (rc)
525 goto fail;
526
527 if (vf->efx)
528 ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
529 }
530
531 ether_addr_copy(vf->mac, mac);
532
533 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
534 if (rc)
535 goto fail;
536
537 if (vf->efx) {
538 /* VF cannot use the vport_id that the PF created */
539 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
540 if (rc) {
541 up_write(&vf->efx->filter_sem);
542 return rc;
543 }
544 vf->efx->type->filter_table_probe(vf->efx);
545 up_write(&vf->efx->filter_sem);
546 efx_net_open(vf->efx->net_dev);
547 efx_device_attach_if_not_resetting(vf->efx);
548 }
549
550 return 0;
551
552 fail:
553 eth_zero_addr(vf->mac);
554 return rc;
555 }
556
efx_ef10_sriov_set_vf_vlan(struct efx_nic * efx,int vf_i,u16 vlan,u8 qos)557 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
558 u8 qos)
559 {
560 struct efx_ef10_nic_data *nic_data = efx->nic_data;
561 struct ef10_vf *vf;
562 u16 new_vlan;
563 int rc = 0, rc2 = 0;
564
565 if (vf_i >= efx->vf_count)
566 return -EINVAL;
567 if (qos != 0)
568 return -EINVAL;
569
570 vf = nic_data->vf + vf_i;
571
572 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
573 if (new_vlan == vf->vlan)
574 return 0;
575
576 if (vf->efx) {
577 efx_device_detach_sync(vf->efx);
578 efx_net_stop(vf->efx->net_dev);
579
580 mutex_lock(&vf->efx->mac_lock);
581 down_write(&vf->efx->filter_sem);
582 vf->efx->type->filter_table_remove(vf->efx);
583
584 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
585 if (rc)
586 goto restore_filters;
587 }
588
589 if (vf->vport_assigned) {
590 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
591 if (rc) {
592 netif_warn(efx, drv, efx->net_dev,
593 "Failed to change vlan on VF %d.\n", vf_i);
594 netif_warn(efx, drv, efx->net_dev,
595 "This is likely because the VF is bound to a driver in a VM.\n");
596 netif_warn(efx, drv, efx->net_dev,
597 "Please unload the driver in the VM.\n");
598 goto restore_vadaptor;
599 }
600 vf->vport_assigned = 0;
601 }
602
603 if (!is_zero_ether_addr(vf->mac)) {
604 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
605 if (rc)
606 goto restore_evb_port;
607 }
608
609 if (vf->vport_id) {
610 rc = efx_ef10_vport_free(efx, vf->vport_id);
611 if (rc)
612 goto restore_mac;
613 vf->vport_id = 0;
614 }
615
616 /* Do the actual vlan change */
617 vf->vlan = new_vlan;
618
619 /* Restore everything in reverse order */
620 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
621 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
622 vf->vlan, &vf->vport_id);
623 if (rc)
624 goto reset_nic_up_write;
625
626 restore_mac:
627 if (!is_zero_ether_addr(vf->mac)) {
628 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
629 if (rc2) {
630 eth_zero_addr(vf->mac);
631 goto reset_nic_up_write;
632 }
633 }
634
635 restore_evb_port:
636 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
637 if (rc2)
638 goto reset_nic_up_write;
639 else
640 vf->vport_assigned = 1;
641
642 restore_vadaptor:
643 if (vf->efx) {
644 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
645 if (rc2)
646 goto reset_nic_up_write;
647 }
648
649 restore_filters:
650 if (vf->efx) {
651 rc2 = vf->efx->type->filter_table_probe(vf->efx);
652 if (rc2)
653 goto reset_nic_up_write;
654
655 up_write(&vf->efx->filter_sem);
656 mutex_unlock(&vf->efx->mac_lock);
657
658 rc2 = efx_net_open(vf->efx->net_dev);
659 if (rc2)
660 goto reset_nic;
661
662 efx_device_attach_if_not_resetting(vf->efx);
663 }
664 return rc;
665
666 reset_nic_up_write:
667 if (vf->efx) {
668 up_write(&vf->efx->filter_sem);
669 mutex_unlock(&vf->efx->mac_lock);
670 }
671 reset_nic:
672 if (vf->efx) {
673 netif_err(efx, drv, efx->net_dev,
674 "Failed to restore VF - scheduling reset.\n");
675 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
676 } else {
677 netif_err(efx, drv, efx->net_dev,
678 "Failed to restore the VF and cannot reset the VF "
679 "- VF is not functional.\n");
680 netif_err(efx, drv, efx->net_dev,
681 "Please reload the driver attached to the VF.\n");
682 }
683
684 return rc ? rc : rc2;
685 }
686
efx_ef10_sriov_set_privilege_mask(struct efx_nic * efx,int vf_i,u32 mask,u32 value)687 static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i,
688 u32 mask, u32 value)
689 {
690 MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN);
691 MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN);
692 struct efx_ef10_nic_data *nic_data = efx->nic_data;
693 u32 old_mask, new_mask;
694 size_t outlen;
695 int rc;
696
697 EFX_WARN_ON_PARANOID((value & ~mask) != 0);
698
699 /* Get privilege mask */
700 MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION,
701 PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index,
702 PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i);
703
704 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
705 pm_inbuf, sizeof(pm_inbuf),
706 pm_outbuf, sizeof(pm_outbuf), &outlen);
707
708 if (rc != 0)
709 return rc;
710 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
711 return -EIO;
712
713 old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK);
714
715 new_mask = old_mask & ~mask;
716 new_mask |= value;
717
718 if (new_mask == old_mask)
719 return 0;
720
721 new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE;
722
723 /* Set privilege mask */
724 MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask);
725
726 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
727 pm_inbuf, sizeof(pm_inbuf),
728 pm_outbuf, sizeof(pm_outbuf), &outlen);
729
730 if (rc != 0)
731 return rc;
732 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
733 return -EIO;
734
735 return 0;
736 }
737
efx_ef10_sriov_set_vf_spoofchk(struct efx_nic * efx,int vf_i,bool spoofchk)738 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk)
739 {
740 struct efx_ef10_nic_data *nic_data = efx->nic_data;
741
742 /* Can't enable spoofchk if firmware doesn't support it. */
743 if (!(nic_data->datapath_caps &
744 BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) &&
745 spoofchk)
746 return -EOPNOTSUPP;
747
748 return efx_ef10_sriov_set_privilege_mask(efx, vf_i,
749 MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX,
750 spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX);
751 }
752
efx_ef10_sriov_set_vf_link_state(struct efx_nic * efx,int vf_i,int link_state)753 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
754 int link_state)
755 {
756 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
757 struct efx_ef10_nic_data *nic_data = efx->nic_data;
758
759 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
760 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
761 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
762 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
763 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
764 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
765 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
766 LINK_STATE_MODE_IN_FUNCTION_PF,
767 nic_data->pf_index,
768 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
769 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
770 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
771 NULL, 0, NULL); /* don't care what old mode was */
772 }
773
efx_ef10_sriov_get_vf_config(struct efx_nic * efx,int vf_i,struct ifla_vf_info * ivf)774 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
775 struct ifla_vf_info *ivf)
776 {
777 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
778 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);
779
780 struct efx_ef10_nic_data *nic_data = efx->nic_data;
781 struct ef10_vf *vf;
782 size_t outlen;
783 int rc;
784
785 if (vf_i >= efx->vf_count)
786 return -EINVAL;
787
788 if (!nic_data->vf)
789 return -EOPNOTSUPP;
790
791 vf = nic_data->vf + vf_i;
792
793 ivf->vf = vf_i;
794 ivf->min_tx_rate = 0;
795 ivf->max_tx_rate = 0;
796 ether_addr_copy(ivf->mac, vf->mac);
797 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
798 ivf->qos = 0;
799
800 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
801 LINK_STATE_MODE_IN_FUNCTION_PF,
802 nic_data->pf_index,
803 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
804 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
805 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
806 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
807 outbuf, sizeof(outbuf), &outlen);
808 if (rc)
809 return rc;
810 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
811 return -EIO;
812 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);
813
814 return 0;
815 }
816