1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) 2019-2021, Intel Corporation. */
3
4#include "ice_vsi_vlan_lib.h"
5#include "ice_lib.h"
6#include "ice_fltr.h"
7#include "ice.h"
8
9static void print_invalid_tpid(struct ice_vsi *vsi, u16 tpid)
10{
11 dev_err(ice_pf_to_dev(vsi->back), "%s %d specified invalid VLAN tpid 0x%04x\n",
12 ice_vsi_type_str(vsi->type), vsi->idx, tpid);
13}
14
15/**
16 * validate_vlan - check if the ice_vlan passed in is valid
17 * @vsi: VSI used for printing error message
18 * @vlan: ice_vlan structure to validate
19 *
20 * Return true if the VLAN TPID is valid or if the VLAN TPID is 0 and the VLAN
21 * VID is 0, which allows for non-zero VLAN filters with the specified VLAN TPID
22 * and untagged VLAN 0 filters to be added to the prune list respectively.
23 */
24static bool validate_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
25{
26 if (vlan->tpid != ETH_P_8021Q && vlan->tpid != ETH_P_8021AD &&
27 vlan->tpid != ETH_P_QINQ1 && (vlan->tpid || vlan->vid)) {
28 print_invalid_tpid(vsi, tpid: vlan->tpid);
29 return false;
30 }
31
32 return true;
33}
34
35/**
36 * ice_vsi_add_vlan - default add VLAN implementation for all VSI types
37 * @vsi: VSI being configured
38 * @vlan: VLAN filter to add
39 */
40int ice_vsi_add_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
41{
42 int err;
43
44 if (!validate_vlan(vsi, vlan))
45 return -EINVAL;
46
47 err = ice_fltr_add_vlan(vsi, vlan);
48 if (!err)
49 vsi->num_vlan++;
50 else if (err == -EEXIST)
51 err = 0;
52 else
53 dev_err(ice_pf_to_dev(vsi->back), "Failure Adding VLAN %d on VSI %i, status %d\n",
54 vlan->vid, vsi->vsi_num, err);
55
56 return err;
57}
58
59/**
60 * ice_vsi_del_vlan - default del VLAN implementation for all VSI types
61 * @vsi: VSI being configured
62 * @vlan: VLAN filter to delete
63 */
64int ice_vsi_del_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
65{
66 struct ice_pf *pf = vsi->back;
67 struct device *dev;
68 int err;
69
70 if (!validate_vlan(vsi, vlan))
71 return -EINVAL;
72
73 dev = ice_pf_to_dev(pf);
74
75 err = ice_fltr_remove_vlan(vsi, vlan);
76 if (!err)
77 vsi->num_vlan--;
78 else if (err == -ENOENT || err == -EBUSY)
79 err = 0;
80 else
81 dev_err(dev, "Error removing VLAN %d on VSI %i error: %d\n",
82 vlan->vid, vsi->vsi_num, err);
83
84 return err;
85}
86
87/**
88 * ice_vsi_manage_vlan_insertion - Manage VLAN insertion for the VSI for Tx
89 * @vsi: the VSI being changed
90 */
91static int ice_vsi_manage_vlan_insertion(struct ice_vsi *vsi)
92{
93 struct ice_hw *hw = &vsi->back->hw;
94 struct ice_vsi_ctx *ctxt;
95 int err;
96
97 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
98 if (!ctxt)
99 return -ENOMEM;
100
101 /* Here we are configuring the VSI to let the driver add VLAN tags by
102 * setting inner_vlan_flags to ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL. The actual VLAN tag
103 * insertion happens in the Tx hot path, in ice_tx_map.
104 */
105 ctxt->info.inner_vlan_flags = ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL;
106
107 /* Preserve existing VLAN strip setting */
108 ctxt->info.inner_vlan_flags |= (vsi->info.inner_vlan_flags &
109 ICE_AQ_VSI_INNER_VLAN_EMODE_M);
110
111 ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
112
113 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
114 if (err) {
115 dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN insert failed, err %d aq_err %s\n",
116 err, ice_aq_str(hw->adminq.sq_last_status));
117 goto out;
118 }
119
120 vsi->info.inner_vlan_flags = ctxt->info.inner_vlan_flags;
121out:
122 kfree(objp: ctxt);
123 return err;
124}
125
126/**
127 * ice_vsi_manage_vlan_stripping - Manage VLAN stripping for the VSI for Rx
128 * @vsi: the VSI being changed
129 * @ena: boolean value indicating if this is a enable or disable request
130 */
131static int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
132{
133 struct ice_hw *hw = &vsi->back->hw;
134 struct ice_vsi_ctx *ctxt;
135 u8 *ivf;
136 int err;
137
138 /* do not allow modifying VLAN stripping when a port VLAN is configured
139 * on this VSI
140 */
141 if (vsi->info.port_based_inner_vlan)
142 return 0;
143
144 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
145 if (!ctxt)
146 return -ENOMEM;
147
148 ivf = &ctxt->info.inner_vlan_flags;
149
150 /* Here we are configuring what the VSI should do with the VLAN tag in
151 * the Rx packet. We can either leave the tag in the packet or put it in
152 * the Rx descriptor.
153 */
154 if (ena) {
155 /* Strip VLAN tag from Rx packet and put it in the desc */
156 *ivf = FIELD_PREP(ICE_AQ_VSI_INNER_VLAN_EMODE_M,
157 ICE_AQ_VSI_INNER_VLAN_EMODE_STR_BOTH);
158 } else {
159 /* Disable stripping. Leave tag in packet */
160 *ivf = FIELD_PREP(ICE_AQ_VSI_INNER_VLAN_EMODE_M,
161 ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING);
162 }
163
164 /* Allow all packets untagged/tagged */
165 *ivf |= ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL;
166
167 ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID);
168
169 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
170 if (err) {
171 dev_err(ice_pf_to_dev(vsi->back), "update VSI for VLAN strip failed, ena = %d err %d aq_err %s\n",
172 ena, err, ice_aq_str(hw->adminq.sq_last_status));
173 goto out;
174 }
175
176 vsi->info.inner_vlan_flags = ctxt->info.inner_vlan_flags;
177out:
178 kfree(objp: ctxt);
179 return err;
180}
181
182int ice_vsi_ena_inner_stripping(struct ice_vsi *vsi, const u16 tpid)
183{
184 if (tpid != ETH_P_8021Q) {
185 print_invalid_tpid(vsi, tpid);
186 return -EINVAL;
187 }
188
189 return ice_vsi_manage_vlan_stripping(vsi, ena: true);
190}
191
192int ice_vsi_dis_inner_stripping(struct ice_vsi *vsi)
193{
194 return ice_vsi_manage_vlan_stripping(vsi, ena: false);
195}
196
197int ice_vsi_ena_inner_insertion(struct ice_vsi *vsi, const u16 tpid)
198{
199 if (tpid != ETH_P_8021Q) {
200 print_invalid_tpid(vsi, tpid);
201 return -EINVAL;
202 }
203
204 return ice_vsi_manage_vlan_insertion(vsi);
205}
206
207int ice_vsi_dis_inner_insertion(struct ice_vsi *vsi)
208{
209 return ice_vsi_manage_vlan_insertion(vsi);
210}
211
212static void
213ice_save_vlan_info(struct ice_aqc_vsi_props *info,
214 struct ice_vsi_vlan_info *vlan)
215{
216 vlan->sw_flags2 = info->sw_flags2;
217 vlan->inner_vlan_flags = info->inner_vlan_flags;
218 vlan->outer_vlan_flags = info->outer_vlan_flags;
219}
220
221static void
222ice_restore_vlan_info(struct ice_aqc_vsi_props *info,
223 struct ice_vsi_vlan_info *vlan)
224{
225 info->sw_flags2 = vlan->sw_flags2;
226 info->inner_vlan_flags = vlan->inner_vlan_flags;
227 info->outer_vlan_flags = vlan->outer_vlan_flags;
228}
229
230/**
231 * __ice_vsi_set_inner_port_vlan - set port VLAN VSI context settings to enable a port VLAN
232 * @vsi: the VSI to update
233 * @pvid_info: VLAN ID and QoS used to set the PVID VSI context field
234 */
235static int __ice_vsi_set_inner_port_vlan(struct ice_vsi *vsi, u16 pvid_info)
236{
237 struct ice_hw *hw = &vsi->back->hw;
238 struct ice_aqc_vsi_props *info;
239 struct ice_vsi_ctx *ctxt;
240 int ret;
241
242 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
243 if (!ctxt)
244 return -ENOMEM;
245
246 ice_save_vlan_info(info: &vsi->info, vlan: &vsi->vlan_info);
247 ctxt->info = vsi->info;
248 info = &ctxt->info;
249 info->inner_vlan_flags = ICE_AQ_VSI_INNER_VLAN_TX_MODE_ACCEPTUNTAGGED |
250 ICE_AQ_VSI_INNER_VLAN_INSERT_PVID |
251 ICE_AQ_VSI_INNER_VLAN_EMODE_STR;
252 info->sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
253
254 info->port_based_inner_vlan = cpu_to_le16(pvid_info);
255 info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
256 ICE_AQ_VSI_PROP_SW_VALID);
257
258 ret = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
259 if (ret) {
260 dev_info(ice_hw_to_dev(hw), "update VSI for port VLAN failed, err %d aq_err %s\n",
261 ret, ice_aq_str(hw->adminq.sq_last_status));
262 goto out;
263 }
264
265 vsi->info.inner_vlan_flags = info->inner_vlan_flags;
266 vsi->info.sw_flags2 = info->sw_flags2;
267 vsi->info.port_based_inner_vlan = info->port_based_inner_vlan;
268out:
269 kfree(objp: ctxt);
270 return ret;
271}
272
273int ice_vsi_set_inner_port_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
274{
275 u16 port_vlan_info;
276
277 if (vlan->tpid != ETH_P_8021Q)
278 return -EINVAL;
279
280 if (vlan->prio > 7)
281 return -EINVAL;
282
283 port_vlan_info = vlan->vid | (vlan->prio << VLAN_PRIO_SHIFT);
284
285 return __ice_vsi_set_inner_port_vlan(vsi, pvid_info: port_vlan_info);
286}
287
288int ice_vsi_clear_inner_port_vlan(struct ice_vsi *vsi)
289{
290 struct ice_hw *hw = &vsi->back->hw;
291 struct ice_aqc_vsi_props *info;
292 struct ice_vsi_ctx *ctxt;
293 int ret;
294
295 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
296 if (!ctxt)
297 return -ENOMEM;
298
299 ice_restore_vlan_info(info: &vsi->info, vlan: &vsi->vlan_info);
300 vsi->info.port_based_inner_vlan = 0;
301 ctxt->info = vsi->info;
302 info = &ctxt->info;
303 info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
304 ICE_AQ_VSI_PROP_SW_VALID);
305
306 ret = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
307 if (ret)
308 dev_err(ice_hw_to_dev(hw), "update VSI for port VLAN failed, err %d aq_err %s\n",
309 ret, ice_aq_str(hw->adminq.sq_last_status));
310
311 kfree(objp: ctxt);
312 return ret;
313}
314
315/**
316 * ice_cfg_vlan_pruning - enable or disable VLAN pruning on the VSI
317 * @vsi: VSI to enable or disable VLAN pruning on
318 * @ena: set to true to enable VLAN pruning and false to disable it
319 *
320 * returns 0 if VSI is updated, negative otherwise
321 */
322static int ice_cfg_vlan_pruning(struct ice_vsi *vsi, bool ena)
323{
324 struct ice_vsi_ctx *ctxt;
325 struct ice_pf *pf;
326 int status;
327
328 if (!vsi)
329 return -EINVAL;
330
331 /* Don't enable VLAN pruning if the netdev is currently in promiscuous
332 * mode. VLAN pruning will be enabled when the interface exits
333 * promiscuous mode if any VLAN filters are active.
334 */
335 if (vsi->netdev && vsi->netdev->flags & IFF_PROMISC && ena)
336 return 0;
337
338 pf = vsi->back;
339 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
340 if (!ctxt)
341 return -ENOMEM;
342
343 ctxt->info = vsi->info;
344
345 if (ena)
346 ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
347 else
348 ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
349
350 ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
351
352 status = ice_update_vsi(hw: &pf->hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
353 if (status) {
354 netdev_err(dev: vsi->netdev, format: "%sabling VLAN pruning on VSI handle: %d, VSI HW ID: %d failed, err = %d, aq_err = %s\n",
355 ena ? "En" : "Dis", vsi->idx, vsi->vsi_num, status,
356 ice_aq_str(aq_err: pf->hw.adminq.sq_last_status));
357 goto err_out;
358 }
359
360 vsi->info.sw_flags2 = ctxt->info.sw_flags2;
361
362 kfree(objp: ctxt);
363 return 0;
364
365err_out:
366 kfree(objp: ctxt);
367 return status;
368}
369
370int ice_vsi_ena_rx_vlan_filtering(struct ice_vsi *vsi)
371{
372 return ice_cfg_vlan_pruning(vsi, ena: true);
373}
374
375int ice_vsi_dis_rx_vlan_filtering(struct ice_vsi *vsi)
376{
377 return ice_cfg_vlan_pruning(vsi, ena: false);
378}
379
380static int ice_cfg_vlan_antispoof(struct ice_vsi *vsi, bool enable)
381{
382 struct ice_vsi_ctx *ctx;
383 int err;
384
385 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
386 if (!ctx)
387 return -ENOMEM;
388
389 ctx->info.sec_flags = vsi->info.sec_flags;
390 ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID);
391
392 if (enable)
393 ctx->info.sec_flags |= ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
394 ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S;
395 else
396 ctx->info.sec_flags &= ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
397 ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
398
399 err = ice_update_vsi(hw: &vsi->back->hw, vsi_handle: vsi->idx, vsi_ctx: ctx, NULL);
400 if (err)
401 dev_err(ice_pf_to_dev(vsi->back), "Failed to configure Tx VLAN anti-spoof %s for VSI %d, error %d\n",
402 enable ? "ON" : "OFF", vsi->vsi_num, err);
403 else
404 vsi->info.sec_flags = ctx->info.sec_flags;
405
406 kfree(objp: ctx);
407
408 return err;
409}
410
411int ice_vsi_ena_tx_vlan_filtering(struct ice_vsi *vsi)
412{
413 return ice_cfg_vlan_antispoof(vsi, enable: true);
414}
415
416int ice_vsi_dis_tx_vlan_filtering(struct ice_vsi *vsi)
417{
418 return ice_cfg_vlan_antispoof(vsi, enable: false);
419}
420
421/**
422 * tpid_to_vsi_outer_vlan_type - convert from TPID to VSI context based tag_type
423 * @tpid: tpid used to translate into VSI context based tag_type
424 * @tag_type: output variable to hold the VSI context based tag type
425 */
426static int tpid_to_vsi_outer_vlan_type(u16 tpid, u8 *tag_type)
427{
428 switch (tpid) {
429 case ETH_P_8021Q:
430 *tag_type = ICE_AQ_VSI_OUTER_TAG_VLAN_8100;
431 break;
432 case ETH_P_8021AD:
433 *tag_type = ICE_AQ_VSI_OUTER_TAG_STAG;
434 break;
435 case ETH_P_QINQ1:
436 *tag_type = ICE_AQ_VSI_OUTER_TAG_VLAN_9100;
437 break;
438 default:
439 *tag_type = 0;
440 return -EINVAL;
441 }
442
443 return 0;
444}
445
446/**
447 * ice_vsi_ena_outer_stripping - enable outer VLAN stripping
448 * @vsi: VSI to configure
449 * @tpid: TPID to enable outer VLAN stripping for
450 *
451 * Enable outer VLAN stripping via VSI context. This function should only be
452 * used if DVM is supported. Also, this function should never be called directly
453 * as it should be part of ice_vsi_vlan_ops if it's needed.
454 *
455 * Since the VSI context only supports a single TPID for insertion and
456 * stripping, setting the TPID for stripping will affect the TPID for insertion.
457 * Callers need to be aware of this limitation.
458 *
459 * Only modify outer VLAN stripping settings and the VLAN TPID. Outer VLAN
460 * insertion settings are unmodified.
461 *
462 * This enables hardware to strip a VLAN tag with the specified TPID to be
463 * stripped from the packet and placed in the receive descriptor.
464 */
465int ice_vsi_ena_outer_stripping(struct ice_vsi *vsi, u16 tpid)
466{
467 struct ice_hw *hw = &vsi->back->hw;
468 struct ice_vsi_ctx *ctxt;
469 u8 tag_type;
470 int err;
471
472 /* do not allow modifying VLAN stripping when a port VLAN is configured
473 * on this VSI
474 */
475 if (vsi->info.port_based_outer_vlan)
476 return 0;
477
478 if (tpid_to_vsi_outer_vlan_type(tpid, tag_type: &tag_type))
479 return -EINVAL;
480
481 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
482 if (!ctxt)
483 return -ENOMEM;
484
485 ctxt->info.valid_sections =
486 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID);
487 /* clear current outer VLAN strip settings */
488 ctxt->info.outer_vlan_flags = vsi->info.outer_vlan_flags &
489 ~(ICE_AQ_VSI_OUTER_VLAN_EMODE_M | ICE_AQ_VSI_OUTER_TAG_TYPE_M);
490 ctxt->info.outer_vlan_flags |=
491 /* we want EMODE_SHOW_BOTH, but that value is zero, so the line
492 * above clears it well enough that we don't need to try to set
493 * zero here, so just do the tag type
494 */
495 FIELD_PREP(ICE_AQ_VSI_OUTER_TAG_TYPE_M, tag_type);
496
497 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
498 if (err)
499 dev_err(ice_pf_to_dev(vsi->back), "update VSI for enabling outer VLAN stripping failed, err %d aq_err %s\n",
500 err, ice_aq_str(hw->adminq.sq_last_status));
501 else
502 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
503
504 kfree(objp: ctxt);
505 return err;
506}
507
508/**
509 * ice_vsi_dis_outer_stripping - disable outer VLAN stripping
510 * @vsi: VSI to configure
511 *
512 * Disable outer VLAN stripping via VSI context. This function should only be
513 * used if DVM is supported. Also, this function should never be called directly
514 * as it should be part of ice_vsi_vlan_ops if it's needed.
515 *
516 * Only modify the outer VLAN stripping settings. The VLAN TPID and outer VLAN
517 * insertion settings are unmodified.
518 *
519 * This tells the hardware to not strip any VLAN tagged packets, thus leaving
520 * them in the packet. This enables software offloaded VLAN stripping and
521 * disables hardware offloaded VLAN stripping.
522 */
523int ice_vsi_dis_outer_stripping(struct ice_vsi *vsi)
524{
525 struct ice_hw *hw = &vsi->back->hw;
526 struct ice_vsi_ctx *ctxt;
527 int err;
528
529 if (vsi->info.port_based_outer_vlan)
530 return 0;
531
532 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
533 if (!ctxt)
534 return -ENOMEM;
535
536 ctxt->info.valid_sections =
537 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID);
538 /* clear current outer VLAN strip settings */
539 ctxt->info.outer_vlan_flags = vsi->info.outer_vlan_flags &
540 ~ICE_AQ_VSI_OUTER_VLAN_EMODE_M;
541 ctxt->info.outer_vlan_flags |= ICE_AQ_VSI_OUTER_VLAN_EMODE_NOTHING <<
542 ICE_AQ_VSI_OUTER_VLAN_EMODE_S;
543
544 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
545 if (err)
546 dev_err(ice_pf_to_dev(vsi->back), "update VSI for disabling outer VLAN stripping failed, err %d aq_err %s\n",
547 err, ice_aq_str(hw->adminq.sq_last_status));
548 else
549 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
550
551 kfree(objp: ctxt);
552 return err;
553}
554
555/**
556 * ice_vsi_ena_outer_insertion - enable outer VLAN insertion
557 * @vsi: VSI to configure
558 * @tpid: TPID to enable outer VLAN insertion for
559 *
560 * Enable outer VLAN insertion via VSI context. This function should only be
561 * used if DVM is supported. Also, this function should never be called directly
562 * as it should be part of ice_vsi_vlan_ops if it's needed.
563 *
564 * Since the VSI context only supports a single TPID for insertion and
565 * stripping, setting the TPID for insertion will affect the TPID for stripping.
566 * Callers need to be aware of this limitation.
567 *
568 * Only modify outer VLAN insertion settings and the VLAN TPID. Outer VLAN
569 * stripping settings are unmodified.
570 *
571 * This allows a VLAN tag with the specified TPID to be inserted in the transmit
572 * descriptor.
573 */
574int ice_vsi_ena_outer_insertion(struct ice_vsi *vsi, u16 tpid)
575{
576 struct ice_hw *hw = &vsi->back->hw;
577 struct ice_vsi_ctx *ctxt;
578 u8 tag_type;
579 int err;
580
581 if (vsi->info.port_based_outer_vlan)
582 return 0;
583
584 if (tpid_to_vsi_outer_vlan_type(tpid, tag_type: &tag_type))
585 return -EINVAL;
586
587 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
588 if (!ctxt)
589 return -ENOMEM;
590
591 ctxt->info.valid_sections =
592 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID);
593 /* clear current outer VLAN insertion settings */
594 ctxt->info.outer_vlan_flags = vsi->info.outer_vlan_flags &
595 ~(ICE_AQ_VSI_OUTER_VLAN_PORT_BASED_INSERT |
596 ICE_AQ_VSI_OUTER_VLAN_BLOCK_TX_DESC |
597 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M |
598 ICE_AQ_VSI_OUTER_TAG_TYPE_M);
599 ctxt->info.outer_vlan_flags |=
600 FIELD_PREP(ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M,
601 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ALL) |
602 FIELD_PREP(ICE_AQ_VSI_OUTER_TAG_TYPE_M, tag_type);
603
604 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
605 if (err)
606 dev_err(ice_pf_to_dev(vsi->back), "update VSI for enabling outer VLAN insertion failed, err %d aq_err %s\n",
607 err, ice_aq_str(hw->adminq.sq_last_status));
608 else
609 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
610
611 kfree(objp: ctxt);
612 return err;
613}
614
615/**
616 * ice_vsi_dis_outer_insertion - disable outer VLAN insertion
617 * @vsi: VSI to configure
618 *
619 * Disable outer VLAN insertion via VSI context. This function should only be
620 * used if DVM is supported. Also, this function should never be called directly
621 * as it should be part of ice_vsi_vlan_ops if it's needed.
622 *
623 * Only modify the outer VLAN insertion settings. The VLAN TPID and outer VLAN
624 * settings are unmodified.
625 *
626 * This tells the hardware to not allow any VLAN tagged packets in the transmit
627 * descriptor. This enables software offloaded VLAN insertion and disables
628 * hardware offloaded VLAN insertion.
629 */
630int ice_vsi_dis_outer_insertion(struct ice_vsi *vsi)
631{
632 struct ice_hw *hw = &vsi->back->hw;
633 struct ice_vsi_ctx *ctxt;
634 int err;
635
636 if (vsi->info.port_based_outer_vlan)
637 return 0;
638
639 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
640 if (!ctxt)
641 return -ENOMEM;
642
643 ctxt->info.valid_sections =
644 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID);
645 /* clear current outer VLAN insertion settings */
646 ctxt->info.outer_vlan_flags = vsi->info.outer_vlan_flags &
647 ~(ICE_AQ_VSI_OUTER_VLAN_PORT_BASED_INSERT |
648 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M);
649 ctxt->info.outer_vlan_flags |=
650 ICE_AQ_VSI_OUTER_VLAN_BLOCK_TX_DESC |
651 FIELD_PREP(ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M,
652 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ALL);
653
654 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
655 if (err)
656 dev_err(ice_pf_to_dev(vsi->back), "update VSI for disabling outer VLAN insertion failed, err %d aq_err %s\n",
657 err, ice_aq_str(hw->adminq.sq_last_status));
658 else
659 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
660
661 kfree(objp: ctxt);
662 return err;
663}
664
665/**
666 * __ice_vsi_set_outer_port_vlan - set the outer port VLAN and related settings
667 * @vsi: VSI to configure
668 * @vlan_info: packed u16 that contains the VLAN prio and ID
669 * @tpid: TPID of the port VLAN
670 *
671 * Set the port VLAN prio, ID, and TPID.
672 *
673 * Enable VLAN pruning so the VSI doesn't receive any traffic that doesn't match
674 * a VLAN prune rule. The caller should take care to add a VLAN prune rule that
675 * matches the port VLAN ID and TPID.
676 *
677 * Tell hardware to strip outer VLAN tagged packets on receive and don't put
678 * them in the receive descriptor. VSI(s) in port VLANs should not be aware of
679 * the port VLAN ID or TPID they are assigned to.
680 *
681 * Tell hardware to prevent outer VLAN tag insertion on transmit and only allow
682 * untagged outer packets from the transmit descriptor.
683 *
684 * Also, tell the hardware to insert the port VLAN on transmit.
685 */
686static int
687__ice_vsi_set_outer_port_vlan(struct ice_vsi *vsi, u16 vlan_info, u16 tpid)
688{
689 struct ice_hw *hw = &vsi->back->hw;
690 struct ice_vsi_ctx *ctxt;
691 u8 tag_type;
692 int err;
693
694 if (tpid_to_vsi_outer_vlan_type(tpid, tag_type: &tag_type))
695 return -EINVAL;
696
697 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
698 if (!ctxt)
699 return -ENOMEM;
700
701 ice_save_vlan_info(info: &vsi->info, vlan: &vsi->vlan_info);
702 ctxt->info = vsi->info;
703
704 ctxt->info.sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
705
706 ctxt->info.port_based_outer_vlan = cpu_to_le16(vlan_info);
707 ctxt->info.outer_vlan_flags =
708 (ICE_AQ_VSI_OUTER_VLAN_EMODE_SHOW <<
709 ICE_AQ_VSI_OUTER_VLAN_EMODE_S) |
710 FIELD_PREP(ICE_AQ_VSI_OUTER_TAG_TYPE_M, tag_type) |
711 ICE_AQ_VSI_OUTER_VLAN_BLOCK_TX_DESC |
712 (ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ACCEPTUNTAGGED <<
713 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_S) |
714 ICE_AQ_VSI_OUTER_VLAN_PORT_BASED_INSERT;
715
716 ctxt->info.valid_sections =
717 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID |
718 ICE_AQ_VSI_PROP_SW_VALID);
719
720 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
721 if (err) {
722 dev_err(ice_pf_to_dev(vsi->back), "update VSI for setting outer port based VLAN failed, err %d aq_err %s\n",
723 err, ice_aq_str(hw->adminq.sq_last_status));
724 } else {
725 vsi->info.port_based_outer_vlan = ctxt->info.port_based_outer_vlan;
726 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
727 vsi->info.sw_flags2 = ctxt->info.sw_flags2;
728 }
729
730 kfree(objp: ctxt);
731 return err;
732}
733
734/**
735 * ice_vsi_set_outer_port_vlan - public version of __ice_vsi_set_outer_port_vlan
736 * @vsi: VSI to configure
737 * @vlan: ice_vlan structure used to set the port VLAN
738 *
739 * Set the outer port VLAN via VSI context. This function should only be
740 * used if DVM is supported. Also, this function should never be called directly
741 * as it should be part of ice_vsi_vlan_ops if it's needed.
742 *
743 * Use the ice_vlan structure passed in to set this VSI in a port VLAN.
744 */
745int ice_vsi_set_outer_port_vlan(struct ice_vsi *vsi, struct ice_vlan *vlan)
746{
747 u16 port_vlan_info;
748
749 if (vlan->prio > (VLAN_PRIO_MASK >> VLAN_PRIO_SHIFT))
750 return -EINVAL;
751
752 port_vlan_info = vlan->vid | (vlan->prio << VLAN_PRIO_SHIFT);
753
754 return __ice_vsi_set_outer_port_vlan(vsi, vlan_info: port_vlan_info, tpid: vlan->tpid);
755}
756
757/**
758 * ice_vsi_clear_outer_port_vlan - clear outer port vlan
759 * @vsi: VSI to configure
760 *
761 * The function is restoring previously set vlan config (saved in
762 * vsi->vlan_info). Setting happens in port vlan configuration.
763 */
764int ice_vsi_clear_outer_port_vlan(struct ice_vsi *vsi)
765{
766 struct ice_hw *hw = &vsi->back->hw;
767 struct ice_vsi_ctx *ctxt;
768 int err;
769
770 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
771 if (!ctxt)
772 return -ENOMEM;
773
774 ice_restore_vlan_info(info: &vsi->info, vlan: &vsi->vlan_info);
775 vsi->info.port_based_outer_vlan = 0;
776 ctxt->info = vsi->info;
777
778 ctxt->info.valid_sections =
779 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID |
780 ICE_AQ_VSI_PROP_SW_VALID);
781
782 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
783 if (err)
784 dev_err(ice_pf_to_dev(vsi->back), "update VSI for clearing outer port based VLAN failed, err %d aq_err %s\n",
785 err, ice_aq_str(hw->adminq.sq_last_status));
786
787 kfree(objp: ctxt);
788 return err;
789}
790
791int ice_vsi_clear_port_vlan(struct ice_vsi *vsi)
792{
793 struct ice_hw *hw = &vsi->back->hw;
794 struct ice_vsi_ctx *ctxt;
795 int err;
796
797 ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
798 if (!ctxt)
799 return -ENOMEM;
800
801 ctxt->info = vsi->info;
802
803 ctxt->info.port_based_outer_vlan = 0;
804 ctxt->info.port_based_inner_vlan = 0;
805
806 ctxt->info.inner_vlan_flags =
807 FIELD_PREP(ICE_AQ_VSI_INNER_VLAN_TX_MODE_M,
808 ICE_AQ_VSI_INNER_VLAN_TX_MODE_ALL);
809 if (ice_is_dvm_ena(hw)) {
810 ctxt->info.inner_vlan_flags |=
811 FIELD_PREP(ICE_AQ_VSI_INNER_VLAN_EMODE_M,
812 ICE_AQ_VSI_INNER_VLAN_EMODE_NOTHING);
813 ctxt->info.outer_vlan_flags =
814 FIELD_PREP(ICE_AQ_VSI_OUTER_VLAN_TX_MODE_M,
815 ICE_AQ_VSI_OUTER_VLAN_TX_MODE_ALL);
816 ctxt->info.outer_vlan_flags |=
817 FIELD_PREP(ICE_AQ_VSI_OUTER_TAG_TYPE_M,
818 ICE_AQ_VSI_OUTER_TAG_VLAN_8100);
819 ctxt->info.outer_vlan_flags |=
820 ICE_AQ_VSI_OUTER_VLAN_EMODE_NOTHING <<
821 ICE_AQ_VSI_OUTER_VLAN_EMODE_S;
822 }
823
824 ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
825 ctxt->info.valid_sections =
826 cpu_to_le16(ICE_AQ_VSI_PROP_OUTER_TAG_VALID |
827 ICE_AQ_VSI_PROP_VLAN_VALID |
828 ICE_AQ_VSI_PROP_SW_VALID);
829
830 err = ice_update_vsi(hw, vsi_handle: vsi->idx, vsi_ctx: ctxt, NULL);
831 if (err) {
832 dev_err(ice_pf_to_dev(vsi->back), "update VSI for clearing port based VLAN failed, err %d aq_err %s\n",
833 err, ice_aq_str(hw->adminq.sq_last_status));
834 } else {
835 vsi->info.port_based_outer_vlan =
836 ctxt->info.port_based_outer_vlan;
837 vsi->info.port_based_inner_vlan =
838 ctxt->info.port_based_inner_vlan;
839 vsi->info.outer_vlan_flags = ctxt->info.outer_vlan_flags;
840 vsi->info.inner_vlan_flags = ctxt->info.inner_vlan_flags;
841 vsi->info.sw_flags2 = ctxt->info.sw_flags2;
842 }
843
844 kfree(objp: ctxt);
845 return err;
846}
847

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source code of linux/drivers/net/ethernet/intel/ice/ice_vsi_vlan_lib.c