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[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 <net/switchdev.h>
49
50 #include "spectrum.h"
51 #include "core.h"
52 #include "reg.h"
53
54 static int mlxsw_sp_port_attr_get(struct net_device *dev,
55 struct switchdev_attr *attr)
56 {
57 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
58 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
59
60 switch (attr->id) {
61 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
62 attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
63 memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
64 attr->u.ppid.id_len);
65 break;
66 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
67 attr->u.brport_flags =
68 (mlxsw_sp_port->learning ? BR_LEARNING : 0) |
69 (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
70 (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
71 break;
72 default:
73 return -EOPNOTSUPP;
74 }
75
76 return 0;
77 }
78
79 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
80 u8 state)
81 {
82 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
83 enum mlxsw_reg_spms_state spms_state;
84 char *spms_pl;
85 u16 vid;
86 int err;
87
88 switch (state) {
89 case BR_STATE_DISABLED: /* fall-through */
90 case BR_STATE_FORWARDING:
91 spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
92 break;
93 case BR_STATE_LISTENING: /* fall-through */
94 case BR_STATE_LEARNING:
95 spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
96 break;
97 case BR_STATE_BLOCKING:
98 spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
99 break;
100 default:
101 BUG();
102 }
103
104 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
105 if (!spms_pl)
106 return -ENOMEM;
107 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
108 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
109 mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
110
111 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
112 kfree(spms_pl);
113 return err;
114 }
115
116 static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
117 struct switchdev_trans *trans,
118 u8 state)
119 {
120 if (switchdev_trans_ph_prepare(trans))
121 return 0;
122
123 mlxsw_sp_port->stp_state = state;
124 return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
125 }
126
127 static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
128 u16 fid_begin, u16 fid_end, bool set,
129 bool only_uc)
130 {
131 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
132 u16 range = fid_end - fid_begin + 1;
133 char *sftr_pl;
134 int err;
135
136 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
137 if (!sftr_pl)
138 return -ENOMEM;
139
140 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, fid_begin,
141 MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
142 mlxsw_sp_port->local_port, set);
143 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
144 if (err)
145 goto buffer_out;
146
147 /* Flooding control allows one to decide whether a given port will
148 * flood unicast traffic for which there is no FDB entry.
149 */
150 if (only_uc)
151 goto buffer_out;
152
153 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, fid_begin,
154 MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST, range,
155 mlxsw_sp_port->local_port, set);
156 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
157
158 buffer_out:
159 kfree(sftr_pl);
160 return err;
161 }
162
163 static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
164 bool set)
165 {
166 struct net_device *dev = mlxsw_sp_port->dev;
167 u16 vid, last_visited_vid;
168 int err;
169
170 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
171 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
172 true);
173 if (err) {
174 last_visited_vid = vid;
175 goto err_port_flood_set;
176 }
177 }
178
179 return 0;
180
181 err_port_flood_set:
182 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
183 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
184 netdev_err(dev, "Failed to configure unicast flooding\n");
185 return err;
186 }
187
188 static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
189 struct switchdev_trans *trans,
190 unsigned long brport_flags)
191 {
192 unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
193 bool set;
194 int err;
195
196 if (switchdev_trans_ph_prepare(trans))
197 return 0;
198
199 if ((uc_flood ^ brport_flags) & BR_FLOOD) {
200 set = mlxsw_sp_port->uc_flood ? false : true;
201 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
202 if (err)
203 return err;
204 }
205
206 mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
207 mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
208 mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
209
210 return 0;
211 }
212
213 static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
214 {
215 char sfdat_pl[MLXSW_REG_SFDAT_LEN];
216 int err;
217
218 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
219 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
220 if (err)
221 return err;
222 mlxsw_sp->ageing_time = ageing_time;
223 return 0;
224 }
225
226 static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
227 struct switchdev_trans *trans,
228 unsigned long ageing_clock_t)
229 {
230 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
231 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
232 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
233
234 if (switchdev_trans_ph_prepare(trans))
235 return 0;
236
237 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
238 }
239
240 static int mlxsw_sp_port_attr_set(struct net_device *dev,
241 const struct switchdev_attr *attr,
242 struct switchdev_trans *trans)
243 {
244 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
245 int err = 0;
246
247 switch (attr->id) {
248 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
249 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
250 attr->u.stp_state);
251 break;
252 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
253 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
254 attr->u.brport_flags);
255 break;
256 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
257 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
258 attr->u.ageing_time);
259 break;
260 default:
261 err = -EOPNOTSUPP;
262 break;
263 }
264
265 return err;
266 }
267
268 static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
269 {
270 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
271 char spvid_pl[MLXSW_REG_SPVID_LEN];
272
273 mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
274 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
275 }
276
277 static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
278 {
279 char sfmr_pl[MLXSW_REG_SFMR_LEN];
280 int err;
281
282 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
283 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
284
285 if (err)
286 return err;
287
288 set_bit(fid, mlxsw_sp->active_fids);
289 return 0;
290 }
291
292 static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
293 {
294 char sfmr_pl[MLXSW_REG_SFMR_LEN];
295
296 clear_bit(fid, mlxsw_sp->active_fids);
297
298 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
299 fid, fid);
300 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
301 }
302
303 static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
304 {
305 enum mlxsw_reg_svfa_mt mt;
306
307 if (mlxsw_sp_port->nr_vfids)
308 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
309 else
310 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
311
312 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
313 }
314
315 static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
316 {
317 enum mlxsw_reg_svfa_mt mt;
318
319 if (!mlxsw_sp_port->nr_vfids)
320 return 0;
321
322 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
323 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
324 }
325
326 static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
327 u16 vid_end)
328 {
329 u16 vid;
330 int err;
331
332 for (vid = vid_begin; vid <= vid_end; vid++) {
333 err = mlxsw_sp_port_add_vid(dev, 0, vid);
334 if (err)
335 goto err_port_add_vid;
336 }
337 return 0;
338
339 err_port_add_vid:
340 for (vid--; vid >= vid_begin; vid--)
341 mlxsw_sp_port_kill_vid(dev, 0, vid);
342 return err;
343 }
344
345 static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
346 u16 vid_begin, u16 vid_end, bool is_member,
347 bool untagged)
348 {
349 u16 vid, vid_e;
350 int err;
351
352 for (vid = vid_begin; vid <= vid_end;
353 vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
354 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
355 vid_end);
356
357 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
358 is_member, untagged);
359 if (err)
360 return err;
361 }
362
363 return 0;
364 }
365
366 static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
367 u16 vid_begin, u16 vid_end,
368 bool flag_untagged, bool flag_pvid)
369 {
370 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
371 struct net_device *dev = mlxsw_sp_port->dev;
372 u16 vid, last_visited_vid, old_pvid;
373 enum mlxsw_reg_svfa_mt mt;
374 int err;
375
376 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
377 * not bridged, then packets ingressing through the port with
378 * the specified VIDs will be directed to CPU.
379 */
380 if (!mlxsw_sp_port->bridged)
381 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
382
383 for (vid = vid_begin; vid <= vid_end; vid++) {
384 if (!test_bit(vid, mlxsw_sp->active_fids)) {
385 err = mlxsw_sp_fid_create(mlxsw_sp, vid);
386 if (err) {
387 netdev_err(dev, "Failed to create FID=%d\n",
388 vid);
389 return err;
390 }
391
392 /* When creating a FID, we set a VID to FID mapping
393 * regardless of the port's mode.
394 */
395 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
396 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
397 true, vid, vid);
398 if (err) {
399 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
400 vid);
401 goto err_port_vid_to_fid_set;
402 }
403 }
404 }
405
406 /* Set FID mapping according to port's mode */
407 for (vid = vid_begin; vid <= vid_end; vid++) {
408 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
409 if (err) {
410 netdev_err(dev, "Failed to map FID=%d", vid);
411 last_visited_vid = --vid;
412 goto err_port_fid_map;
413 }
414 }
415
416 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
417 true, false);
418 if (err) {
419 netdev_err(dev, "Failed to configure flooding\n");
420 goto err_port_flood_set;
421 }
422
423 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
424 true, flag_untagged);
425 if (err) {
426 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
427 vid_end);
428 goto err_port_vlans_set;
429 }
430
431 old_pvid = mlxsw_sp_port->pvid;
432 if (flag_pvid && old_pvid != vid_begin) {
433 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
434 if (err) {
435 netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
436 goto err_port_pvid_set;
437 }
438 mlxsw_sp_port->pvid = vid_begin;
439 }
440
441 /* Changing activity bits only if HW operation succeded */
442 for (vid = vid_begin; vid <= vid_end; vid++)
443 set_bit(vid, mlxsw_sp_port->active_vlans);
444
445 /* STP state change must be done after we set active VLANs */
446 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
447 mlxsw_sp_port->stp_state);
448 if (err) {
449 netdev_err(dev, "Failed to set STP state\n");
450 goto err_port_stp_state_set;
451 }
452
453 return 0;
454
455 err_port_vid_to_fid_set:
456 mlxsw_sp_fid_destroy(mlxsw_sp, vid);
457 return err;
458
459 err_port_stp_state_set:
460 for (vid = vid_begin; vid <= vid_end; vid++)
461 clear_bit(vid, mlxsw_sp_port->active_vlans);
462 if (old_pvid != mlxsw_sp_port->pvid)
463 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
464 err_port_pvid_set:
465 __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
466 false);
467 err_port_vlans_set:
468 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
469 false);
470 err_port_flood_set:
471 last_visited_vid = vid_end;
472 err_port_fid_map:
473 for (vid = last_visited_vid; vid >= vid_begin; vid--)
474 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
475 return err;
476 }
477
478 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
479 const struct switchdev_obj_port_vlan *vlan,
480 struct switchdev_trans *trans)
481 {
482 bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
483 bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
484
485 if (switchdev_trans_ph_prepare(trans))
486 return 0;
487
488 return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
489 vlan->vid_begin, vlan->vid_end,
490 untagged_flag, pvid_flag);
491 }
492
493 static int mlxsw_sp_port_fdb_op(struct mlxsw_sp_port *mlxsw_sp_port,
494 const char *mac, u16 vid, bool adding,
495 bool dynamic)
496 {
497 enum mlxsw_reg_sfd_rec_policy policy;
498 enum mlxsw_reg_sfd_op op;
499 char *sfd_pl;
500 int err;
501
502 if (!vid)
503 vid = mlxsw_sp_port->pvid;
504
505 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
506 if (!sfd_pl)
507 return -ENOMEM;
508
509 policy = dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
510 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
511 op = adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
512 MLXSW_REG_SFD_OP_WRITE_REMOVE;
513 mlxsw_reg_sfd_pack(sfd_pl, op, 0);
514 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, policy,
515 mac, vid, MLXSW_REG_SFD_REC_ACTION_NOP,
516 mlxsw_sp_port->local_port);
517 err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sfd),
518 sfd_pl);
519 kfree(sfd_pl);
520
521 return err;
522 }
523
524 static int
525 mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
526 const struct switchdev_obj_port_fdb *fdb,
527 struct switchdev_trans *trans)
528 {
529 if (switchdev_trans_ph_prepare(trans))
530 return 0;
531
532 return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
533 true, false);
534 }
535
536 static int mlxsw_sp_port_obj_add(struct net_device *dev,
537 const struct switchdev_obj *obj,
538 struct switchdev_trans *trans)
539 {
540 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
541 int err = 0;
542
543 switch (obj->id) {
544 case SWITCHDEV_OBJ_ID_PORT_VLAN:
545 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
546 SWITCHDEV_OBJ_PORT_VLAN(obj),
547 trans);
548 break;
549 case SWITCHDEV_OBJ_ID_PORT_FDB:
550 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
551 SWITCHDEV_OBJ_PORT_FDB(obj),
552 trans);
553 break;
554 default:
555 err = -EOPNOTSUPP;
556 break;
557 }
558
559 return err;
560 }
561
562 static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
563 u16 vid_end)
564 {
565 u16 vid;
566 int err;
567
568 for (vid = vid_begin; vid <= vid_end; vid++) {
569 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
570 if (err)
571 return err;
572 }
573
574 return 0;
575 }
576
577 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
578 u16 vid_begin, u16 vid_end, bool init)
579 {
580 struct net_device *dev = mlxsw_sp_port->dev;
581 u16 vid, pvid;
582 int err;
583
584 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
585 * not bridged, then prevent packets ingressing through the
586 * port with the specified VIDs from being trapped to CPU.
587 */
588 if (!init && !mlxsw_sp_port->bridged)
589 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
590
591 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
592 false, false);
593 if (err) {
594 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
595 vid_end);
596 return err;
597 }
598
599 pvid = mlxsw_sp_port->pvid;
600 if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
601 /* Default VLAN is always 1 */
602 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
603 if (err) {
604 netdev_err(dev, "Unable to del PVID %d\n", pvid);
605 return err;
606 }
607 mlxsw_sp_port->pvid = 1;
608 }
609
610 if (init)
611 goto out;
612
613 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
614 false, false);
615 if (err) {
616 netdev_err(dev, "Failed to clear flooding\n");
617 return err;
618 }
619
620 for (vid = vid_begin; vid <= vid_end; vid++) {
621 /* Remove FID mapping in case of Virtual mode */
622 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
623 if (err) {
624 netdev_err(dev, "Failed to unmap FID=%d", vid);
625 return err;
626 }
627 }
628
629 out:
630 /* Changing activity bits only if HW operation succeded */
631 for (vid = vid_begin; vid <= vid_end; vid++)
632 clear_bit(vid, mlxsw_sp_port->active_vlans);
633
634 return 0;
635 }
636
637 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
638 const struct switchdev_obj_port_vlan *vlan)
639 {
640 return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
641 vlan->vid_begin, vlan->vid_end, false);
642 }
643
644 static int
645 mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
646 const struct switchdev_obj_port_fdb *fdb)
647 {
648 return mlxsw_sp_port_fdb_op(mlxsw_sp_port, fdb->addr, fdb->vid,
649 false, false);
650 }
651
652 static int mlxsw_sp_port_obj_del(struct net_device *dev,
653 const struct switchdev_obj *obj)
654 {
655 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
656 int err = 0;
657
658 switch (obj->id) {
659 case SWITCHDEV_OBJ_ID_PORT_VLAN:
660 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
661 SWITCHDEV_OBJ_PORT_VLAN(obj));
662 break;
663 case SWITCHDEV_OBJ_ID_PORT_FDB:
664 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
665 SWITCHDEV_OBJ_PORT_FDB(obj));
666 break;
667 default:
668 err = -EOPNOTSUPP;
669 break;
670 }
671
672 return err;
673 }
674
675 static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
676 struct switchdev_obj_port_fdb *fdb,
677 switchdev_obj_dump_cb_t *cb)
678 {
679 char *sfd_pl;
680 char mac[ETH_ALEN];
681 u16 vid;
682 u8 local_port;
683 u8 num_rec;
684 int stored_err = 0;
685 int i;
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_REG_SFD_OP_QUERY_DUMP, 0);
693 do {
694 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
695 err = mlxsw_reg_query(mlxsw_sp_port->mlxsw_sp->core,
696 MLXSW_REG(sfd), sfd_pl);
697 if (err)
698 goto out;
699
700 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
701
702 /* Even in case of error, we have to run the dump to the end
703 * so the session in firmware is finished.
704 */
705 if (stored_err)
706 continue;
707
708 for (i = 0; i < num_rec; i++) {
709 switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
710 case MLXSW_REG_SFD_REC_TYPE_UNICAST:
711 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &vid,
712 &local_port);
713 if (local_port == mlxsw_sp_port->local_port) {
714 ether_addr_copy(fdb->addr, mac);
715 fdb->ndm_state = NUD_REACHABLE;
716 fdb->vid = vid;
717 err = cb(&fdb->obj);
718 if (err)
719 stored_err = err;
720 }
721 }
722 }
723 } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
724
725 out:
726 kfree(sfd_pl);
727 return stored_err ? stored_err : err;
728 }
729
730 static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
731 struct switchdev_obj_port_vlan *vlan,
732 switchdev_obj_dump_cb_t *cb)
733 {
734 u16 vid;
735 int err = 0;
736
737 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
738 vlan->flags = 0;
739 if (vid == mlxsw_sp_port->pvid)
740 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
741 vlan->vid_begin = vid;
742 vlan->vid_end = vid;
743 err = cb(&vlan->obj);
744 if (err)
745 break;
746 }
747 return err;
748 }
749
750 static int mlxsw_sp_port_obj_dump(struct net_device *dev,
751 struct switchdev_obj *obj,
752 switchdev_obj_dump_cb_t *cb)
753 {
754 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
755 int err = 0;
756
757 switch (obj->id) {
758 case SWITCHDEV_OBJ_ID_PORT_VLAN:
759 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
760 SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
761 break;
762 case SWITCHDEV_OBJ_ID_PORT_FDB:
763 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
764 SWITCHDEV_OBJ_PORT_FDB(obj), cb);
765 break;
766 default:
767 err = -EOPNOTSUPP;
768 break;
769 }
770
771 return err;
772 }
773
774 static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
775 .switchdev_port_attr_get = mlxsw_sp_port_attr_get,
776 .switchdev_port_attr_set = mlxsw_sp_port_attr_set,
777 .switchdev_port_obj_add = mlxsw_sp_port_obj_add,
778 .switchdev_port_obj_del = mlxsw_sp_port_obj_del,
779 .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump,
780 };
781
782 static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
783 char *sfn_pl, int rec_index,
784 bool adding)
785 {
786 struct mlxsw_sp_port *mlxsw_sp_port;
787 char mac[ETH_ALEN];
788 u8 local_port;
789 u16 vid;
790 int err;
791
792 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &vid, &local_port);
793 mlxsw_sp_port = mlxsw_sp->ports[local_port];
794 if (!mlxsw_sp_port) {
795 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
796 return;
797 }
798
799 err = mlxsw_sp_port_fdb_op(mlxsw_sp_port, mac, vid,
800 adding && mlxsw_sp_port->learning, true);
801 if (err) {
802 if (net_ratelimit())
803 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
804 return;
805 }
806
807 if (mlxsw_sp_port->learning && mlxsw_sp_port->learning_sync) {
808 struct switchdev_notifier_fdb_info info;
809 unsigned long notifier_type;
810
811 info.addr = mac;
812 info.vid = vid;
813 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
814 call_switchdev_notifiers(notifier_type, mlxsw_sp_port->dev,
815 &info.info);
816 }
817 }
818
819 static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
820 char *sfn_pl, int rec_index)
821 {
822 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
823 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
824 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
825 rec_index, true);
826 break;
827 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
828 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
829 rec_index, false);
830 break;
831 }
832 }
833
834 static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
835 {
836 schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
837 msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
838 }
839
840 static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
841 {
842 struct mlxsw_sp *mlxsw_sp;
843 char *sfn_pl;
844 u8 num_rec;
845 int i;
846 int err;
847
848 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
849 if (!sfn_pl)
850 return;
851
852 mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
853
854 do {
855 mlxsw_reg_sfn_pack(sfn_pl);
856 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
857 if (err) {
858 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
859 break;
860 }
861 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
862 for (i = 0; i < num_rec; i++)
863 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
864
865 } while (num_rec);
866
867 kfree(sfn_pl);
868 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
869 }
870
871 static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
872 {
873 int err;
874
875 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
876 if (err) {
877 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
878 return err;
879 }
880 INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
881 mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
882 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
883 return 0;
884 }
885
886 static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
887 {
888 cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
889 }
890
891 static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
892 {
893 u16 fid;
894
895 for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
896 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
897 }
898
899 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
900 {
901 return mlxsw_sp_fdb_init(mlxsw_sp);
902 }
903
904 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
905 {
906 mlxsw_sp_fdb_fini(mlxsw_sp);
907 mlxsw_sp_fids_fini(mlxsw_sp);
908 }
909
910 int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
911 {
912 struct net_device *dev = mlxsw_sp_port->dev;
913 int err;
914
915 /* Allow only untagged packets to ingress and tag them internally
916 * with VID 1.
917 */
918 mlxsw_sp_port->pvid = 1;
919 err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
920 if (err) {
921 netdev_err(dev, "Unable to init VLANs\n");
922 return err;
923 }
924
925 /* Add implicit VLAN interface in the device, so that untagged
926 * packets will be classified to the default vFID.
927 */
928 err = mlxsw_sp_port_add_vid(dev, 0, 1);
929 if (err)
930 netdev_err(dev, "Failed to configure default vFID\n");
931
932 return err;
933 }
934
935 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
936 {
937 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
938 }
939
940 void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
941 {
942 }
Linux kernel - Deliverables
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