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