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Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlxsw / spectrum_switchdev.c
1 /*
2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #include <linux/kernel.h>
38 #include <linux/types.h>
39 #include <linux/netdevice.h>
40 #include <linux/etherdevice.h>
41 #include <linux/slab.h>
42 #include <linux/device.h>
43 #include <linux/skbuff.h>
44 #include <linux/if_vlan.h>
45 #include <linux/if_bridge.h>
46 #include <linux/workqueue.h>
47 #include <linux/jiffies.h>
48 #include <linux/rtnetlink.h>
49 #include <net/switchdev.h>
50
51 #include "spectrum.h"
52 #include "core.h"
53 #include "reg.h"
54
55 static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
56 u16 vid)
57 {
58 u16 fid = vid;
59
60 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
61 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
62
63 fid = mlxsw_sp_vfid_to_fid(vfid);
64 }
65
66 if (!fid)
67 fid = mlxsw_sp_port->pvid;
68
69 return fid;
70 }
71
72 static struct mlxsw_sp_port *
73 mlxsw_sp_port_orig_get(struct net_device *dev,
74 struct mlxsw_sp_port *mlxsw_sp_port)
75 {
76 struct mlxsw_sp_port *mlxsw_sp_vport;
77 u16 vid;
78
79 if (!is_vlan_dev(dev))
80 return mlxsw_sp_port;
81
82 vid = vlan_dev_vlan_id(dev);
83 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
84 WARN_ON(!mlxsw_sp_vport);
85
86 return mlxsw_sp_vport;
87 }
88
89 static int mlxsw_sp_port_attr_get(struct net_device *dev,
90 struct switchdev_attr *attr)
91 {
92 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
93 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
94
95 mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
96 if (!mlxsw_sp_port)
97 return -EINVAL;
98
99 switch (attr->id) {
100 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
101 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
102 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
103 attr->u.ppid.id_len);
104 break;
105 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
106 attr->u.brport_flags =
107 (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
108 (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
109 (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
110 break;
111 default:
112 return -EOPNOTSUPP;
113 }
114
115 return 0;
116 }
117
118 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
119 u8 state)
120 {
121 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
122 enum mlxsw_reg_spms_state spms_state;
123 char *spms_pl;
124 u16 vid;
125 int err;
126
127 switch (state) {
128 case BR_STATE_FORWARDING:
129 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
130 break;
131 case BR_STATE_LEARNING:
132 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
133 break;
134 case BR_STATE_LISTENING: /* fall-through */
135 case BR_STATE_DISABLED: /* fall-through */
136 case BR_STATE_BLOCKING:
137 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
138 break;
139 default:
140 BUG();
141 }
142
143 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
144 if (!spms_pl)
145 return -ENOMEM;
146 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
147
148 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
149 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
150 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
151 } else {
152 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
153 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
154 }
155
156 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
157 kfree(spms_pl);
158 return err;
159 }
160
161 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
162 struct switchdev_trans *trans,
163 u8 state)
164 {
165 if (switchdev_trans_ph_prepare(trans))
166 return 0;
167
168 mlxsw_sp_port->stp_state = state;
169 return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
170 }
171
172 static bool mlxsw_sp_vfid_is_vport_br(u16 vfid)
173 {
174 return vfid >= MLXSW_SP_VFID_PORT_MAX;
175 }
176
177 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
178 u16 idx_begin, u16 idx_end, bool set,
179 bool only_uc)
180 {
181 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
182 u16 local_port = mlxsw_sp_port->local_port;
183 enum mlxsw_flood_table_type table_type;
184 u16 range = idx_end - idx_begin + 1;
185 char *sftr_pl;
186 int err;
187
188 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
189 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
190 if (mlxsw_sp_vfid_is_vport_br(idx_begin))
191 local_port = mlxsw_sp_port->local_port;
192 else
193 local_port = MLXSW_PORT_CPU_PORT;
194 } else {
195 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
196 }
197
198 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
199 if (!sftr_pl)
200 return -ENOMEM;
201
202 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
203 table_type, range, local_port, set);
204 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
205 if (err)
206 goto buffer_out;
207
208 /* Flooding control allows one to decide whether a given port will
209 * flood unicast traffic for which there is no FDB entry.
210 */
211 if (only_uc)
212 goto buffer_out;
213
214 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
215 table_type, range, local_port, set);
216 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
217 if (err)
218 goto err_flood_bm_set;
219 else
220 goto buffer_out;
221
222 err_flood_bm_set:
223 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
224 table_type, range, local_port, !set);
225 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
226 buffer_out:
227 kfree(sftr_pl);
228 return err;
229 }
230
231 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
232 bool set)
233 {
234 struct net_device *dev = mlxsw_sp_port->dev;
235 u16 vid, last_visited_vid;
236 int err;
237
238 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
239 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
240
241 return __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
242 set, true);
243 }
244
245 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
246 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
247 true);
248 if (err) {
249 last_visited_vid = vid;
250 goto err_port_flood_set;
251 }
252 }
253
254 return 0;
255
256 err_port_flood_set:
257 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
258 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
259 netdev_err(dev, "Failed to configure unicast flooding\n");
260 return err;
261 }
262
263 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
264 bool set, bool only_uc)
265 {
266 /* In case of vFIDs, index into the flooding table is relative to
267 * the start of the vFIDs range.
268 */
269 return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
270 only_uc);
271 }
272
273 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
274 struct switchdev_trans *trans,
275 unsigned long brport_flags)
276 {
277 unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
278 bool set;
279 int err;
280
281 if (!mlxsw_sp_port->bridged)
282 return -EINVAL;
283
284 if (switchdev_trans_ph_prepare(trans))
285 return 0;
286
287 if ((uc_flood ^ brport_flags) & BR_FLOOD) {
288 set = mlxsw_sp_port->uc_flood ? false : true;
289 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
290 if (err)
291 return err;
292 }
293
294 mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
295 mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
296 mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
297
298 return 0;
299 }
300
301 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
302 {
303 char sfdat_pl[MLXSW_REG_SFDAT_LEN];
304 int err;
305
306 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
307 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
308 if (err)
309 return err;
310 mlxsw_sp->ageing_time = ageing_time;
311 return 0;
312 }
313
314 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
315 struct switchdev_trans *trans,
316 unsigned long ageing_clock_t)
317 {
318 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
319 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
320 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
321
322 if (switchdev_trans_ph_prepare(trans)) {
323 if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
324 ageing_time > MLXSW_SP_MAX_AGEING_TIME)
325 return -ERANGE;
326 else
327 return 0;
328 }
329
330 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
331 }
332
333 static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
334 struct switchdev_trans *trans,
335 struct net_device *orig_dev,
336 bool vlan_enabled)
337 {
338 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
339
340 /* SWITCHDEV_TRANS_PREPARE phase */
341 if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
342 netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
343 return -EINVAL;
344 }
345
346 return 0;
347 }
348
349 static int mlxsw_sp_port_attr_set(struct net_device *dev,
350 const struct switchdev_attr *attr,
351 struct switchdev_trans *trans)
352 {
353 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
354 int err = 0;
355
356 mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
357 if (!mlxsw_sp_port)
358 return -EINVAL;
359
360 switch (attr->id) {
361 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
362 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
363 attr->u.stp_state);
364 break;
365 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
366 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
367 attr->u.brport_flags);
368 break;
369 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
370 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
371 attr->u.ageing_time);
372 break;
373 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
374 err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
375 attr->orig_dev,
376 attr->u.vlan_filtering);
377 break;
378 default:
379 err = -EOPNOTSUPP;
380 break;
381 }
382
383 return err;
384 }
385
386 static int __mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port,
387 u16 vid)
388 {
389 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
390 char spvid_pl[MLXSW_REG_SPVID_LEN];
391
392 mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
393 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
394 }
395
396 static int mlxsw_sp_port_allow_untagged_set(struct mlxsw_sp_port *mlxsw_sp_port,
397 bool allow)
398 {
399 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
400 char spaft_pl[MLXSW_REG_SPAFT_LEN];
401
402 mlxsw_reg_spaft_pack(spaft_pl, mlxsw_sp_port->local_port, allow);
403 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spaft), spaft_pl);
404 }
405
406 int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
407 {
408 struct net_device *dev = mlxsw_sp_port->dev;
409 int err;
410
411 if (!vid) {
412 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port, false);
413 if (err) {
414 netdev_err(dev, "Failed to disallow untagged traffic\n");
415 return err;
416 }
417 } else {
418 err = __mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid);
419 if (err) {
420 netdev_err(dev, "Failed to set PVID\n");
421 return err;
422 }
423
424 /* Only allow if not already allowed. */
425 if (!mlxsw_sp_port->pvid) {
426 err = mlxsw_sp_port_allow_untagged_set(mlxsw_sp_port,
427 true);
428 if (err) {
429 netdev_err(dev, "Failed to allow untagged traffic\n");
430 goto err_port_allow_untagged_set;
431 }
432 }
433 }
434
435 mlxsw_sp_port->pvid = vid;
436 return 0;
437
438 err_port_allow_untagged_set:
439 __mlxsw_sp_port_pvid_set(mlxsw_sp_port, mlxsw_sp_port->pvid);
440 return err;
441 }
442
443 static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
444 {
445 char sfmr_pl[MLXSW_REG_SFMR_LEN];
446 int err;
447
448 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
449 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
450
451 if (err)
452 return err;
453
454 set_bit(fid, mlxsw_sp->active_fids);
455 return 0;
456 }
457
458 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
459 {
460 char sfmr_pl[MLXSW_REG_SFMR_LEN];
461
462 clear_bit(fid, mlxsw_sp->active_fids);
463
464 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
465 fid, fid);
466 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
467 }
468
469 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
470 {
471 enum mlxsw_reg_svfa_mt mt;
472
473 if (!list_empty(&mlxsw_sp_port->vports_list))
474 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
475 else
476 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
477
478 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
479 }
480
481 static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
482 {
483 enum mlxsw_reg_svfa_mt mt;
484
485 if (list_empty(&mlxsw_sp_port->vports_list))
486 return 0;
487
488 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
489 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
490 }
491
492 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
493 u16 vid_end)
494 {
495 u16 vid;
496 int err;
497
498 for (vid = vid_begin; vid <= vid_end; vid++) {
499 err = mlxsw_sp_port_add_vid(dev, 0, vid);
500 if (err)
501 goto err_port_add_vid;
502 }
503 return 0;
504
505 err_port_add_vid:
506 for (vid--; vid >= vid_begin; vid--)
507 mlxsw_sp_port_kill_vid(dev, 0, vid);
508 return err;
509 }
510
511 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
512 u16 vid_begin, u16 vid_end, bool is_member,
513 bool untagged)
514 {
515 u16 vid, vid_e;
516 int err;
517
518 for (vid = vid_begin; vid <= vid_end;
519 vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
520 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
521 vid_end);
522
523 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
524 is_member, untagged);
525 if (err)
526 return err;
527 }
528
529 return 0;
530 }
531
532 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
533 u16 vid_begin, u16 vid_end,
534 bool flag_untagged, bool flag_pvid)
535 {
536 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
537 struct net_device *dev = mlxsw_sp_port->dev;
538 u16 vid, last_visited_vid, old_pvid;
539 enum mlxsw_reg_svfa_mt mt;
540 int err;
541
542 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
543 * not bridged, then packets ingressing through the port with
544 * the specified VIDs will be directed to CPU.
545 */
546 if (!mlxsw_sp_port->bridged)
547 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
548
549 for (vid = vid_begin; vid <= vid_end; vid++) {
550 if (!test_bit(vid, mlxsw_sp->active_fids)) {
551 err = mlxsw_sp_fid_create(mlxsw_sp, vid);
552 if (err) {
553 netdev_err(dev, "Failed to create FID=%d\n",
554 vid);
555 return err;
556 }
557
558 /* When creating a FID, we set a VID to FID mapping
559 * regardless of the port's mode.
560 */
561 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
562 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
563 true, vid, vid);
564 if (err) {
565 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
566 vid);
567 goto err_port_vid_to_fid_set;
568 }
569 }
570 }
571
572 /* Set FID mapping according to port's mode */
573 for (vid = vid_begin; vid <= vid_end; vid++) {
574 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
575 if (err) {
576 netdev_err(dev, "Failed to map FID=%d", vid);
577 last_visited_vid = --vid;
578 goto err_port_fid_map;
579 }
580 }
581
582 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
583 true, false);
584 if (err) {
585 netdev_err(dev, "Failed to configure flooding\n");
586 goto err_port_flood_set;
587 }
588
589 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
590 true, flag_untagged);
591 if (err) {
592 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
593 vid_end);
594 goto err_port_vlans_set;
595 }
596
597 old_pvid = mlxsw_sp_port->pvid;
598 if (flag_pvid && old_pvid != vid_begin) {
599 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
600 if (err) {
601 netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
602 goto err_port_pvid_set;
603 }
604 } else if (!flag_pvid && old_pvid >= vid_begin && old_pvid <= vid_end) {
605 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
606 if (err) {
607 netdev_err(dev, "Unable to del PVID\n");
608 goto err_port_pvid_set;
609 }
610 }
611
612 /* Changing activity bits only if HW operation succeded */
613 for (vid = vid_begin; vid <= vid_end; vid++) {
614 set_bit(vid, mlxsw_sp_port->active_vlans);
615 if (flag_untagged)
616 set_bit(vid, mlxsw_sp_port->untagged_vlans);
617 else
618 clear_bit(vid, mlxsw_sp_port->untagged_vlans);
619 }
620
621 /* STP state change must be done after we set active VLANs */
622 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
623 mlxsw_sp_port->stp_state);
624 if (err) {
625 netdev_err(dev, "Failed to set STP state\n");
626 goto err_port_stp_state_set;
627 }
628
629 return 0;
630
631 err_port_vid_to_fid_set:
632 mlxsw_sp_fid_destroy(mlxsw_sp, vid);
633 return err;
634
635 err_port_stp_state_set:
636 for (vid = vid_begin; vid <= vid_end; vid++)
637 clear_bit(vid, mlxsw_sp_port->active_vlans);
638 if (old_pvid != mlxsw_sp_port->pvid)
639 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
640 err_port_pvid_set:
641 __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
642 false);
643 err_port_vlans_set:
644 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
645 false);
646 err_port_flood_set:
647 last_visited_vid = vid_end;
648 err_port_fid_map:
649 for (vid = last_visited_vid; vid >= vid_begin; vid--)
650 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
651 return err;
652 }
653
654 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
655 const struct switchdev_obj_port_vlan *vlan,
656 struct switchdev_trans *trans)
657 {
658 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
659 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
660
661 if (switchdev_trans_ph_prepare(trans))
662 return 0;
663
664 return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
665 vlan->vid_begin, vlan->vid_end,
666 flag_untagged, flag_pvid);
667 }
668
669 static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
670 {
671 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
672 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
673 }
674
675 static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
676 {
677 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
678 MLXSW_REG_SFD_OP_WRITE_REMOVE;
679 }
680
681 static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
682 const char *mac, u16 fid, bool adding,
683 bool dynamic)
684 {
685 char *sfd_pl;
686 int err;
687
688 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
689 if (!sfd_pl)
690 return -ENOMEM;
691
692 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
693 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
694 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
695 local_port);
696 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
697 kfree(sfd_pl);
698
699 return err;
700 }
701
702 static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
703 const char *mac, u16 fid, u16 lag_vid,
704 bool adding, bool dynamic)
705 {
706 char *sfd_pl;
707 int err;
708
709 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
710 if (!sfd_pl)
711 return -ENOMEM;
712
713 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
714 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
715 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
716 lag_vid, lag_id);
717 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
718 kfree(sfd_pl);
719
720 return err;
721 }
722
723 static int
724 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
725 const struct switchdev_obj_port_fdb *fdb,
726 struct switchdev_trans *trans)
727 {
728 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
729 u16 lag_vid = 0;
730
731 if (switchdev_trans_ph_prepare(trans))
732 return 0;
733
734 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
735 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
736 }
737
738 if (!mlxsw_sp_port->lagged)
739 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
740 mlxsw_sp_port->local_port,
741 fdb->addr, fid, true, false);
742 else
743 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
744 mlxsw_sp_port->lag_id,
745 fdb->addr, fid, lag_vid,
746 true, false);
747 }
748
749 static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
750 u16 fid, u16 mid, bool adding)
751 {
752 char *sfd_pl;
753 int err;
754
755 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
756 if (!sfd_pl)
757 return -ENOMEM;
758
759 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
760 mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
761 MLXSW_REG_SFD_REC_ACTION_NOP, mid);
762 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
763 kfree(sfd_pl);
764 return err;
765 }
766
767 static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
768 bool add, bool clear_all_ports)
769 {
770 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
771 char *smid_pl;
772 int err, i;
773
774 smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
775 if (!smid_pl)
776 return -ENOMEM;
777
778 mlxsw_reg_smid_pack(smid_pl, mid, mlxsw_sp_port->local_port, add);
779 if (clear_all_ports) {
780 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
781 if (mlxsw_sp->ports[i])
782 mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
783 }
784 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
785 kfree(smid_pl);
786 return err;
787 }
788
789 static struct mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp *mlxsw_sp,
790 const unsigned char *addr,
791 u16 vid)
792 {
793 struct mlxsw_sp_mid *mid;
794
795 list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
796 if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
797 return mid;
798 }
799 return NULL;
800 }
801
802 static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
803 const unsigned char *addr,
804 u16 vid)
805 {
806 struct mlxsw_sp_mid *mid;
807 u16 mid_idx;
808
809 mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
810 MLXSW_SP_MID_MAX);
811 if (mid_idx == MLXSW_SP_MID_MAX)
812 return NULL;
813
814 mid = kzalloc(sizeof(*mid), GFP_KERNEL);
815 if (!mid)
816 return NULL;
817
818 set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
819 ether_addr_copy(mid->addr, addr);
820 mid->vid = vid;
821 mid->mid = mid_idx;
822 mid->ref_count = 0;
823 list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
824
825 return mid;
826 }
827
828 static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
829 struct mlxsw_sp_mid *mid)
830 {
831 if (--mid->ref_count == 0) {
832 list_del(&mid->list);
833 clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
834 kfree(mid);
835 return 1;
836 }
837 return 0;
838 }
839
840 static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
841 const struct switchdev_obj_port_mdb *mdb,
842 struct switchdev_trans *trans)
843 {
844 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
845 struct net_device *dev = mlxsw_sp_port->dev;
846 struct mlxsw_sp_mid *mid;
847 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
848 int err = 0;
849
850 if (switchdev_trans_ph_prepare(trans))
851 return 0;
852
853 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
854 if (!mid) {
855 mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
856 if (!mid) {
857 netdev_err(dev, "Unable to allocate MC group\n");
858 return -ENOMEM;
859 }
860 }
861 mid->ref_count++;
862
863 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
864 mid->ref_count == 1);
865 if (err) {
866 netdev_err(dev, "Unable to set SMID\n");
867 goto err_out;
868 }
869
870 if (mid->ref_count == 1) {
871 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
872 true);
873 if (err) {
874 netdev_err(dev, "Unable to set MC SFD\n");
875 goto err_out;
876 }
877 }
878
879 return 0;
880
881 err_out:
882 __mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
883 return err;
884 }
885
886 static int mlxsw_sp_port_obj_add(struct net_device *dev,
887 const struct switchdev_obj *obj,
888 struct switchdev_trans *trans)
889 {
890 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
891 int err = 0;
892
893 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
894 if (!mlxsw_sp_port)
895 return -EINVAL;
896
897 switch (obj->id) {
898 case SWITCHDEV_OBJ_ID_PORT_VLAN:
899 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
900 return 0;
901
902 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
903 SWITCHDEV_OBJ_PORT_VLAN(obj),
904 trans);
905 break;
906 case SWITCHDEV_OBJ_ID_PORT_FDB:
907 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
908 SWITCHDEV_OBJ_PORT_FDB(obj),
909 trans);
910 break;
911 case SWITCHDEV_OBJ_ID_PORT_MDB:
912 err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
913 SWITCHDEV_OBJ_PORT_MDB(obj),
914 trans);
915 break;
916 default:
917 err = -EOPNOTSUPP;
918 break;
919 }
920
921 return err;
922 }
923
924 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
925 u16 vid_end)
926 {
927 u16 vid;
928 int err;
929
930 for (vid = vid_begin; vid <= vid_end; vid++) {
931 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
932 if (err)
933 return err;
934 }
935
936 return 0;
937 }
938
939 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
940 u16 vid_begin, u16 vid_end, bool init)
941 {
942 struct net_device *dev = mlxsw_sp_port->dev;
943 u16 vid, pvid;
944 int err;
945
946 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
947 * not bridged, then prevent packets ingressing through the
948 * port with the specified VIDs from being trapped to CPU.
949 */
950 if (!init && !mlxsw_sp_port->bridged)
951 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
952
953 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
954 false, false);
955 if (err) {
956 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
957 vid_end);
958 return err;
959 }
960
961 if (init)
962 goto out;
963
964 pvid = mlxsw_sp_port->pvid;
965 if (pvid >= vid_begin && pvid <= vid_end) {
966 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
967 if (err) {
968 netdev_err(dev, "Unable to del PVID %d\n", pvid);
969 return err;
970 }
971 }
972
973 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
974 false, false);
975 if (err) {
976 netdev_err(dev, "Failed to clear flooding\n");
977 return err;
978 }
979
980 for (vid = vid_begin; vid <= vid_end; vid++) {
981 /* Remove FID mapping in case of Virtual mode */
982 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
983 if (err) {
984 netdev_err(dev, "Failed to unmap FID=%d", vid);
985 return err;
986 }
987 }
988
989 out:
990 /* Changing activity bits only if HW operation succeded */
991 for (vid = vid_begin; vid <= vid_end; vid++)
992 clear_bit(vid, mlxsw_sp_port->active_vlans);
993
994 return 0;
995 }
996
997 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
998 const struct switchdev_obj_port_vlan *vlan)
999 {
1000 return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1001 vlan->vid_begin, vlan->vid_end, false);
1002 }
1003
1004 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
1005 {
1006 u16 vid;
1007
1008 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
1009 __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
1010 }
1011
1012 static int
1013 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
1014 const struct switchdev_obj_port_fdb *fdb)
1015 {
1016 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
1017 u16 lag_vid = 0;
1018
1019 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1020 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1021 }
1022
1023 if (!mlxsw_sp_port->lagged)
1024 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
1025 mlxsw_sp_port->local_port,
1026 fdb->addr, fid,
1027 false, false);
1028 else
1029 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
1030 mlxsw_sp_port->lag_id,
1031 fdb->addr, fid, lag_vid,
1032 false, false);
1033 }
1034
1035 static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
1036 const struct switchdev_obj_port_mdb *mdb)
1037 {
1038 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1039 struct net_device *dev = mlxsw_sp_port->dev;
1040 struct mlxsw_sp_mid *mid;
1041 u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
1042 u16 mid_idx;
1043 int err = 0;
1044
1045 mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
1046 if (!mid) {
1047 netdev_err(dev, "Unable to remove port from MC DB\n");
1048 return -EINVAL;
1049 }
1050
1051 err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
1052 if (err)
1053 netdev_err(dev, "Unable to remove port from SMID\n");
1054
1055 mid_idx = mid->mid;
1056 if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
1057 err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
1058 false);
1059 if (err)
1060 netdev_err(dev, "Unable to remove MC SFD\n");
1061 }
1062
1063 return err;
1064 }
1065
1066 static int mlxsw_sp_port_obj_del(struct net_device *dev,
1067 const struct switchdev_obj *obj)
1068 {
1069 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1070 int err = 0;
1071
1072 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1073 if (!mlxsw_sp_port)
1074 return -EINVAL;
1075
1076 switch (obj->id) {
1077 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1078 if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
1079 return 0;
1080
1081 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
1082 SWITCHDEV_OBJ_PORT_VLAN(obj));
1083 break;
1084 case SWITCHDEV_OBJ_ID_PORT_FDB:
1085 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
1086 SWITCHDEV_OBJ_PORT_FDB(obj));
1087 break;
1088 case SWITCHDEV_OBJ_ID_PORT_MDB:
1089 err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
1090 SWITCHDEV_OBJ_PORT_MDB(obj));
1091 break;
1092 default:
1093 err = -EOPNOTSUPP;
1094 break;
1095 }
1096
1097 return err;
1098 }
1099
1100 static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
1101 u16 lag_id)
1102 {
1103 struct mlxsw_sp_port *mlxsw_sp_port;
1104 int i;
1105
1106 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
1107 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
1108 if (mlxsw_sp_port)
1109 return mlxsw_sp_port;
1110 }
1111 return NULL;
1112 }
1113
1114 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1115 struct switchdev_obj_port_fdb *fdb,
1116 switchdev_obj_dump_cb_t *cb,
1117 struct net_device *orig_dev)
1118 {
1119 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1120 struct mlxsw_sp_port *tmp;
1121 u16 vport_fid = 0;
1122 char *sfd_pl;
1123 char mac[ETH_ALEN];
1124 u16 fid;
1125 u8 local_port;
1126 u16 lag_id;
1127 u8 num_rec;
1128 int stored_err = 0;
1129 int i;
1130 int err;
1131
1132 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
1133 if (!sfd_pl)
1134 return -ENOMEM;
1135
1136 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1137 u16 tmp;
1138
1139 tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
1140 vport_fid = mlxsw_sp_vfid_to_fid(tmp);
1141 }
1142
1143 mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
1144 do {
1145 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
1146 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
1147 if (err)
1148 goto out;
1149
1150 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
1151
1152 /* Even in case of error, we have to run the dump to the end
1153 * so the session in firmware is finished.
1154 */
1155 if (stored_err)
1156 continue;
1157
1158 for (i = 0; i < num_rec; i++) {
1159 switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
1160 case MLXSW_REG_SFD_REC_TYPE_UNICAST:
1161 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
1162 &local_port);
1163 if (local_port == mlxsw_sp_port->local_port) {
1164 if (vport_fid && vport_fid == fid)
1165 fdb->vid = 0;
1166 else if (!vport_fid &&
1167 !mlxsw_sp_fid_is_vfid(fid))
1168 fdb->vid = fid;
1169 else
1170 continue;
1171 ether_addr_copy(fdb->addr, mac);
1172 fdb->ndm_state = NUD_REACHABLE;
1173 err = cb(&fdb->obj);
1174 if (err)
1175 stored_err = err;
1176 }
1177 break;
1178 case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
1179 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
1180 mac, &fid, &lag_id);
1181 tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1182 if (tmp && tmp->local_port ==
1183 mlxsw_sp_port->local_port) {
1184 /* LAG records can only point to LAG
1185 * devices or VLAN devices on top.
1186 */
1187 if (!netif_is_lag_master(orig_dev) &&
1188 !is_vlan_dev(orig_dev))
1189 continue;
1190 if (vport_fid && vport_fid == fid)
1191 fdb->vid = 0;
1192 else if (!vport_fid &&
1193 !mlxsw_sp_fid_is_vfid(fid))
1194 fdb->vid = fid;
1195 else
1196 continue;
1197 ether_addr_copy(fdb->addr, mac);
1198 fdb->ndm_state = NUD_REACHABLE;
1199 err = cb(&fdb->obj);
1200 if (err)
1201 stored_err = err;
1202 }
1203 break;
1204 }
1205 }
1206 } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
1207
1208 out:
1209 kfree(sfd_pl);
1210 return stored_err ? stored_err : err;
1211 }
1212
1213 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
1214 struct switchdev_obj_port_vlan *vlan,
1215 switchdev_obj_dump_cb_t *cb)
1216 {
1217 u16 vid;
1218 int err = 0;
1219
1220 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
1221 vlan->flags = 0;
1222 vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1223 vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
1224 return cb(&vlan->obj);
1225 }
1226
1227 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
1228 vlan->flags = 0;
1229 if (vid == mlxsw_sp_port->pvid)
1230 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
1231 if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
1232 vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
1233 vlan->vid_begin = vid;
1234 vlan->vid_end = vid;
1235 err = cb(&vlan->obj);
1236 if (err)
1237 break;
1238 }
1239 return err;
1240 }
1241
1242 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
1243 struct switchdev_obj *obj,
1244 switchdev_obj_dump_cb_t *cb)
1245 {
1246 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1247 int err = 0;
1248
1249 mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
1250 if (!mlxsw_sp_port)
1251 return -EINVAL;
1252
1253 switch (obj->id) {
1254 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1255 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
1256 SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
1257 break;
1258 case SWITCHDEV_OBJ_ID_PORT_FDB:
1259 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
1260 SWITCHDEV_OBJ_PORT_FDB(obj), cb,
1261 obj->orig_dev);
1262 break;
1263 default:
1264 err = -EOPNOTSUPP;
1265 break;
1266 }
1267
1268 return err;
1269 }
1270
1271 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
1272 .switchdev_port_attr_get = mlxsw_sp_port_attr_get,
1273 .switchdev_port_attr_set = mlxsw_sp_port_attr_set,
1274 .switchdev_port_obj_add = mlxsw_sp_port_obj_add,
1275 .switchdev_port_obj_del = mlxsw_sp_port_obj_del,
1276 .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump,
1277 };
1278
1279 static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
1280 char *mac, u16 vid,
1281 struct net_device *dev)
1282 {
1283 struct switchdev_notifier_fdb_info info;
1284 unsigned long notifier_type;
1285
1286 if (learning_sync) {
1287 info.addr = mac;
1288 info.vid = vid;
1289 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
1290 call_switchdev_notifiers(notifier_type, dev, &info.info);
1291 }
1292 }
1293
1294 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
1295 char *sfn_pl, int rec_index,
1296 bool adding)
1297 {
1298 struct mlxsw_sp_port *mlxsw_sp_port;
1299 char mac[ETH_ALEN];
1300 u8 local_port;
1301 u16 vid, fid;
1302 bool do_notification = true;
1303 int err;
1304
1305 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
1306 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1307 if (!mlxsw_sp_port) {
1308 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
1309 goto just_remove;
1310 }
1311
1312 if (mlxsw_sp_fid_is_vfid(fid)) {
1313 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
1314 struct mlxsw_sp_port *mlxsw_sp_vport;
1315
1316 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
1317 vfid);
1318 if (!mlxsw_sp_vport) {
1319 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1320 goto just_remove;
1321 }
1322 vid = 0;
1323 /* Override the physical port with the vPort. */
1324 mlxsw_sp_port = mlxsw_sp_vport;
1325 } else {
1326 vid = fid;
1327 }
1328
1329 adding = adding && mlxsw_sp_port->learning;
1330
1331 do_fdb_op:
1332 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
1333 adding, true);
1334 if (err) {
1335 if (net_ratelimit())
1336 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1337 return;
1338 }
1339
1340 if (!do_notification)
1341 return;
1342 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
1343 adding, mac, vid, mlxsw_sp_port->dev);
1344 return;
1345
1346 just_remove:
1347 adding = false;
1348 do_notification = false;
1349 goto do_fdb_op;
1350 }
1351
1352 static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
1353 char *sfn_pl, int rec_index,
1354 bool adding)
1355 {
1356 struct mlxsw_sp_port *mlxsw_sp_port;
1357 struct net_device *dev;
1358 char mac[ETH_ALEN];
1359 u16 lag_vid = 0;
1360 u16 lag_id;
1361 u16 vid, fid;
1362 bool do_notification = true;
1363 int err;
1364
1365 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
1366 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
1367 if (!mlxsw_sp_port) {
1368 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
1369 goto just_remove;
1370 }
1371
1372 if (mlxsw_sp_fid_is_vfid(fid)) {
1373 u16 vfid = mlxsw_sp_fid_to_vfid(fid);
1374 struct mlxsw_sp_port *mlxsw_sp_vport;
1375
1376 mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
1377 vfid);
1378 if (!mlxsw_sp_vport) {
1379 netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
1380 goto just_remove;
1381 }
1382
1383 lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1384 dev = mlxsw_sp_vport->dev;
1385 vid = 0;
1386 /* Override the physical port with the vPort. */
1387 mlxsw_sp_port = mlxsw_sp_vport;
1388 } else {
1389 dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
1390 vid = fid;
1391 }
1392
1393 adding = adding && mlxsw_sp_port->learning;
1394
1395 do_fdb_op:
1396 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
1397 adding, true);
1398 if (err) {
1399 if (net_ratelimit())
1400 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
1401 return;
1402 }
1403
1404 if (!do_notification)
1405 return;
1406 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
1407 vid, dev);
1408 return;
1409
1410 just_remove:
1411 adding = false;
1412 do_notification = false;
1413 goto do_fdb_op;
1414 }
1415
1416 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
1417 char *sfn_pl, int rec_index)
1418 {
1419 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
1420 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
1421 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1422 rec_index, true);
1423 break;
1424 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
1425 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
1426 rec_index, false);
1427 break;
1428 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
1429 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1430 rec_index, true);
1431 break;
1432 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
1433 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
1434 rec_index, false);
1435 break;
1436 }
1437 }
1438
1439 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
1440 {
1441 schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
1442 msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
1443 }
1444
1445 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
1446 {
1447 struct mlxsw_sp *mlxsw_sp;
1448 char *sfn_pl;
1449 u8 num_rec;
1450 int i;
1451 int err;
1452
1453 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
1454 if (!sfn_pl)
1455 return;
1456
1457 mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
1458
1459 rtnl_lock();
1460 do {
1461 mlxsw_reg_sfn_pack(sfn_pl);
1462 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
1463 if (err) {
1464 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1465 break;
1466 }
1467 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1468 for (i = 0; i < num_rec; i++)
1469 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1470
1471 } while (num_rec);
1472 rtnl_unlock();
1473
1474 kfree(sfn_pl);
1475 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1476 }
1477
1478 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1479 {
1480 int err;
1481
1482 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1483 if (err) {
1484 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1485 return err;
1486 }
1487 INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1488 mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1489 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1490 return 0;
1491 }
1492
1493 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1494 {
1495 cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1496 }
1497
1498 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
1499 {
1500 u16 fid;
1501
1502 for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
1503 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
1504 }
1505
1506 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1507 {
1508 return mlxsw_sp_fdb_init(mlxsw_sp);
1509 }
1510
1511 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1512 {
1513 mlxsw_sp_fdb_fini(mlxsw_sp);
1514 mlxsw_sp_fids_fini(mlxsw_sp);
1515 }
1516
1517 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1518 {
1519 struct net_device *dev = mlxsw_sp_port->dev;
1520 int err;
1521
1522 /* Allow only untagged packets to ingress and tag them internally
1523 * with VID 1.
1524 */
1525 mlxsw_sp_port->pvid = 1;
1526 err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
1527 true);
1528 if (err) {
1529 netdev_err(dev, "Unable to init VLANs\n");
1530 return err;
1531 }
1532
1533 /* Add implicit VLAN interface in the device, so that untagged
1534 * packets will be classified to the default vFID.
1535 */
1536 err = mlxsw_sp_port_add_vid(dev, 0, 1);
1537 if (err)
1538 netdev_err(dev, "Failed to configure default vFID\n");
1539
1540 return err;
1541 }
1542
1543 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1544 {
1545 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1546 }
1547
1548 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1549 {
1550 }
Linux kernel - Deliverables
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