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mlxsw: spectrum: Use FID instead of VID when accessing FDB
[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / mellanox / mlxsw / spectrum_switchdev.c
CommitLineData
56ade8fe
JP		 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
54static 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) |
0293038e
IS		 69 (mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
70 (mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
56ade8fe
JP		 71 break;
72 default:
73 return -EOPNOTSUPP;
74 }
75
76 return 0;
77}
78
79static 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
116static 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
0293038e 127static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
c06a94ef 128 u16 idx_begin, u16 idx_end, bool set,
0293038e
IS		 129 bool only_uc)
130{
131 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
7f71eb46
IS		 132 u16 local_port = mlxsw_sp_port->local_port;
133 enum mlxsw_flood_table_type table_type;
c06a94ef 134 u16 range = idx_end - idx_begin + 1;
0293038e
IS		 135 char *sftr_pl;
136 int err;
137
7f71eb46
IS		 138 if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
139 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
140 local_port = MLXSW_PORT_CPU_PORT;
141 } else {
142 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
143 }
144
0293038e
IS		 145 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
146 if (!sftr_pl)
147 return -ENOMEM;
148
c06a94ef 149 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
7f71eb46 150 table_type, range, local_port, set);
0293038e
IS		 151 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
152 if (err)
153 goto buffer_out;
154
155 /* Flooding control allows one to decide whether a given port will
156 * flood unicast traffic for which there is no FDB entry.
157 */
158 if (only_uc)
159 goto buffer_out;
160
c06a94ef 161 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
7f71eb46 162 table_type, range, local_port, set);
0293038e
IS		 163 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
164
165buffer_out:
166 kfree(sftr_pl);
167 return err;
168}
169
170static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
171 bool set)
172{
173 struct net_device *dev = mlxsw_sp_port->dev;
174 u16 vid, last_visited_vid;
175 int err;
176
177 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
178 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
179 true);
180 if (err) {
181 last_visited_vid = vid;
182 goto err_port_flood_set;
183 }
184 }
185
186 return 0;
187
188err_port_flood_set:
189 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
190 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
191 netdev_err(dev, "Failed to configure unicast flooding\n");
192 return err;
193}
194
7f71eb46 195int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
19ae6124 196 bool set, bool only_uc)
7f71eb46
IS		 197{
198 /* In case of vFIDs, index into the flooding table is relative to
199 * the start of the vFIDs range.
200 */
19ae6124
IS		 201 return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
202 only_uc);
7f71eb46
IS		 203}
204
56ade8fe
JP		 205static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
206 struct switchdev_trans *trans,
207 unsigned long brport_flags)
208{
0293038e
IS		 209 unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
210 bool set;
211 int err;
212
56ade8fe
JP		 213 if (switchdev_trans_ph_prepare(trans))
214 return 0;
215
0293038e
IS		 216 if ((uc_flood ^ brport_flags) & BR_FLOOD) {
217 set = mlxsw_sp_port->uc_flood ? false : true;
218 err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
219 if (err)
220 return err;
221 }
222
223 mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
56ade8fe
JP		 224 mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
225 mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
0293038e 226
56ade8fe
JP		 227 return 0;
228}
229
230static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
231{
232 char sfdat_pl[MLXSW_REG_SFDAT_LEN];
233 int err;
234
235 mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
236 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
237 if (err)
238 return err;
239 mlxsw_sp->ageing_time = ageing_time;
240 return 0;
241}
242
243static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
244 struct switchdev_trans *trans,
135f9ece 245 unsigned long ageing_clock_t)
56ade8fe
JP		 246{
247 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
135f9ece 248 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
56ade8fe
JP		 249 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
250
251 if (switchdev_trans_ph_prepare(trans))
252 return 0;
253
254 return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
255}
256
257static int mlxsw_sp_port_attr_set(struct net_device *dev,
258 const struct switchdev_attr *attr,
259 struct switchdev_trans *trans)
260{
261 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
262 int err = 0;
263
264 switch (attr->id) {
265 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
266 err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
267 attr->u.stp_state);
268 break;
269 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
270 err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
271 attr->u.brport_flags);
272 break;
273 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
274 err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
275 attr->u.ageing_time);
276 break;
277 default:
278 err = -EOPNOTSUPP;
279 break;
280 }
281
282 return err;
283}
284
285static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
286{
287 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
288 char spvid_pl[MLXSW_REG_SPVID_LEN];
289
290 mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
291 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
292}
293
294static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
295{
296 char sfmr_pl[MLXSW_REG_SFMR_LEN];
297 int err;
298
299 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
300 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
301
302 if (err)
303 return err;
304
305 set_bit(fid, mlxsw_sp->active_fids);
306 return 0;
307}
308
309static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
310{
311 char sfmr_pl[MLXSW_REG_SFMR_LEN];
312
313 clear_bit(fid, mlxsw_sp->active_fids);
314
315 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
316 fid, fid);
317 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
318}
319
320static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
321{
322 enum mlxsw_reg_svfa_mt mt;
323
7f71eb46 324 if (!list_empty(&mlxsw_sp_port->vports_list))
56ade8fe
JP		 325 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
326 else
327 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
328
329 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
330}
331
332static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
333{
334 enum mlxsw_reg_svfa_mt mt;
335
7f71eb46 336 if (list_empty(&mlxsw_sp_port->vports_list))
56ade8fe
JP		 337 return 0;
338
339 mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
340 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
341}
342
56ade8fe
JP		 343static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
344 u16 vid_end)
345{
346 u16 vid;
347 int err;
348
349 for (vid = vid_begin; vid <= vid_end; vid++) {
350 err = mlxsw_sp_port_add_vid(dev, 0, vid);
351 if (err)
352 goto err_port_add_vid;
353 }
354 return 0;
355
356err_port_add_vid:
357 for (vid--; vid >= vid_begin; vid--)
358 mlxsw_sp_port_kill_vid(dev, 0, vid);
359 return err;
360}
361
3b7ad5ec
IS		 362static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
363 u16 vid_begin, u16 vid_end, bool is_member,
364 bool untagged)
365{
366 u16 vid, vid_e;
367 int err;
368
369 for (vid = vid_begin; vid <= vid_end;
370 vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
371 vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
372 vid_end);
373
374 err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
375 is_member, untagged);
376 if (err)
377 return err;
378 }
379
380 return 0;
381}
382
56ade8fe
JP		 383static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
384 u16 vid_begin, u16 vid_end,
385 bool flag_untagged, bool flag_pvid)
386{
387 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
388 struct net_device *dev = mlxsw_sp_port->dev;
b07a966c 389 u16 vid, last_visited_vid, old_pvid;
56ade8fe 390 enum mlxsw_reg_svfa_mt mt;
56ade8fe
JP		 391 int err;
392
393 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
394 * not bridged, then packets ingressing through the port with
395 * the specified VIDs will be directed to CPU.
396 */
397 if (!mlxsw_sp_port->bridged)
398 return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
399
400 for (vid = vid_begin; vid <= vid_end; vid++) {
401 if (!test_bit(vid, mlxsw_sp->active_fids)) {
402 err = mlxsw_sp_fid_create(mlxsw_sp, vid);
403 if (err) {
404 netdev_err(dev, "Failed to create FID=%d\n",
405 vid);
406 return err;
407 }
408
409 /* When creating a FID, we set a VID to FID mapping
410 * regardless of the port's mode.
411 */
412 mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
413 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
414 true, vid, vid);
415 if (err) {
416 netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
417 vid);
b07a966c 418 goto err_port_vid_to_fid_set;
56ade8fe
JP		 419 }
420 }
b07a966c 421 }
56ade8fe 422
b07a966c
IS		 423 /* Set FID mapping according to port's mode */
424 for (vid = vid_begin; vid <= vid_end; vid++) {
56ade8fe
JP		 425 err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
426 if (err) {
427 netdev_err(dev, "Failed to map FID=%d", vid);
b07a966c
IS		 428 last_visited_vid = --vid;
429 goto err_port_fid_map;
56ade8fe 430 }
1b3433a9 431 }
56ade8fe 432
1b3433a9
IS		 433 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
434 true, false);
435 if (err) {
436 netdev_err(dev, "Failed to configure flooding\n");
b07a966c 437 goto err_port_flood_set;
56ade8fe
JP		 438 }
439
3b7ad5ec
IS		 440 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
441 true, flag_untagged);
442 if (err) {
443 netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
444 vid_end);
b07a966c 445 goto err_port_vlans_set;
56ade8fe
JP		 446 }
447
b07a966c
IS		 448 old_pvid = mlxsw_sp_port->pvid;
449 if (flag_pvid && old_pvid != vid_begin) {
450 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
56ade8fe 451 if (err) {
b07a966c
IS		 452 netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
453 goto err_port_pvid_set;
56ade8fe 454 }
b07a966c 455 mlxsw_sp_port->pvid = vid_begin;
56ade8fe
JP		 456 }
457
458 /* Changing activity bits only if HW operation succeded */
459 for (vid = vid_begin; vid <= vid_end; vid++)
460 set_bit(vid, mlxsw_sp_port->active_vlans);
461
b07a966c
IS		 462 /* STP state change must be done after we set active VLANs */
463 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
464 mlxsw_sp_port->stp_state);
465 if (err) {
466 netdev_err(dev, "Failed to set STP state\n");
467 goto err_port_stp_state_set;
468 }
469
470 return 0;
471
472err_port_vid_to_fid_set:
473 mlxsw_sp_fid_destroy(mlxsw_sp, vid);
474 return err;
475
476err_port_stp_state_set:
477 for (vid = vid_begin; vid <= vid_end; vid++)
478 clear_bit(vid, mlxsw_sp_port->active_vlans);
479 if (old_pvid != mlxsw_sp_port->pvid)
480 mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
481err_port_pvid_set:
482 __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
483 false);
484err_port_vlans_set:
485 __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
486 false);
487err_port_flood_set:
488 last_visited_vid = vid_end;
489err_port_fid_map:
490 for (vid = last_visited_vid; vid >= vid_begin; vid--)
491 mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
492 return err;
56ade8fe
JP		 493}
494
495static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
496 const struct switchdev_obj_port_vlan *vlan,
497 struct switchdev_trans *trans)
498{
499 bool untagged_flag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
500 bool pvid_flag = vlan->flags & BRIDGE_VLAN_INFO_PVID;
501
502 if (switchdev_trans_ph_prepare(trans))
503 return 0;
504
505 return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
506 vlan->vid_begin, vlan->vid_end,
507 untagged_flag, pvid_flag);
508}
509
8a1ab5d7 510static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
56ade8fe 511{
8a1ab5d7
JP		 512 return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
513 MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
514}
515
516static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
517{
518 return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
519 MLXSW_REG_SFD_OP_WRITE_REMOVE;
520}
521
522static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp_port *mlxsw_sp_port,
9de6a80e 523 const char *mac, u16 fid, bool adding,
8a1ab5d7
JP		 524 bool dynamic)
525{
526 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
56ade8fe
JP		 527 char *sfd_pl;
528 int err;
529
56ade8fe
JP		 530 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
531 if (!sfd_pl)
532 return -ENOMEM;
533
8a1ab5d7
JP		 534 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
535 mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
9de6a80e 536 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
56ade8fe 537 mlxsw_sp_port->local_port);
8a1ab5d7
JP		 538 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
539 kfree(sfd_pl);
540
541 return err;
542}
543
544static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
9de6a80e 545 const char *mac, u16 fid, bool adding,
8a1ab5d7
JP		 546 bool dynamic)
547{
548 char *sfd_pl;
549 int err;
550
551 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
552 if (!sfd_pl)
553 return -ENOMEM;
554
555 mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
556 mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
9de6a80e 557 mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
8a1ab5d7
JP		 558 lag_id);
559 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
56ade8fe
JP		 560 kfree(sfd_pl);
561
562 return err;
563}
564
565static int
566mlxsw_sp_port_fdb_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
567 const struct switchdev_obj_port_fdb *fdb,
568 struct switchdev_trans *trans)
569{
9de6a80e 570 u16 fid = fdb->vid;
8a1ab5d7 571
56ade8fe
JP		 572 if (switchdev_trans_ph_prepare(trans))
573 return 0;
574
9de6a80e
IS		 575 if (!fid)
576 fid = mlxsw_sp_port->pvid;
8a1ab5d7
JP		 577
578 if (!mlxsw_sp_port->lagged)
579 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port,
9de6a80e 580 fdb->addr, fid, true, false);
8a1ab5d7
JP		 581 else
582 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
583 mlxsw_sp_port->lag_id,
9de6a80e 584 fdb->addr, fid, true, false);
56ade8fe
JP		 585}
586
587static int mlxsw_sp_port_obj_add(struct net_device *dev,
588 const struct switchdev_obj *obj,
589 struct switchdev_trans *trans)
590{
591 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
592 int err = 0;
593
594 switch (obj->id) {
595 case SWITCHDEV_OBJ_ID_PORT_VLAN:
596 err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
597 SWITCHDEV_OBJ_PORT_VLAN(obj),
598 trans);
599 break;
600 case SWITCHDEV_OBJ_ID_PORT_FDB:
601 err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
602 SWITCHDEV_OBJ_PORT_FDB(obj),
603 trans);
604 break;
605 default:
606 err = -EOPNOTSUPP;
607 break;
608 }
609
610 return err;
611}
612
613static int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
614 u16 vid_end)
615{
616 u16 vid;
617 int err;
618
619 for (vid = vid_begin; vid <= vid_end; vid++) {
620 err = mlxsw_sp_port_kill_vid(dev, 0, vid);
621 if (err)
622 return err;
623 }
624
625 return 0;
626}
627
628static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
629 u16 vid_begin, u16 vid_end, bool init)
630{
631 struct net_device *dev = mlxsw_sp_port->dev;
3b7ad5ec 632 u16 vid, pvid;
56ade8fe
JP		 633 int err;
634
635 /* In case this is invoked with BRIDGE_FLAGS_SELF and port is
636 * not bridged, then prevent packets ingressing through the
637 * port with the specified VIDs from being trapped to CPU.
638 */
639 if (!init && !mlxsw_sp_port->bridged)
640 return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
641
3b7ad5ec
IS		 642 err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
643 false, false);
644 if (err) {
645 netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
646 vid_end);
647 return err;
56ade8fe
JP		 648 }
649
06c071f6
IS		 650 pvid = mlxsw_sp_port->pvid;
651 if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
56ade8fe 652 /* Default VLAN is always 1 */
06c071f6 653 err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
56ade8fe 654 if (err) {
06c071f6 655 netdev_err(dev, "Unable to del PVID %d\n", pvid);
56ade8fe
JP		 656 return err;
657 }
06c071f6 658 mlxsw_sp_port->pvid = 1;
56ade8fe
JP		 659 }
660
661 if (init)
662 goto out;
663
1b3433a9
IS		 664 err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
665 false, false);
666 if (err) {
667 netdev_err(dev, "Failed to clear flooding\n");
668 return err;
669 }
56ade8fe 670
1b3433a9 671 for (vid = vid_begin; vid <= vid_end; vid++) {
56ade8fe
JP		 672 /* Remove FID mapping in case of Virtual mode */
673 err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
674 if (err) {
675 netdev_err(dev, "Failed to unmap FID=%d", vid);
676 return err;
677 }
678 }
679
680out:
681 /* Changing activity bits only if HW operation succeded */
682 for (vid = vid_begin; vid <= vid_end; vid++)
683 clear_bit(vid, mlxsw_sp_port->active_vlans);
684
685 return 0;
686}
687
688static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
689 const struct switchdev_obj_port_vlan *vlan)
690{
691 return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
692 vlan->vid_begin, vlan->vid_end, false);
693}
694
695static int
696mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
697 const struct switchdev_obj_port_fdb *fdb)
698{
9de6a80e
IS		 699 u16 fid = fdb->vid;
700
8a1ab5d7
JP		 701 if (!mlxsw_sp_port->lagged)
702 return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port,
9de6a80e 703 fdb->addr, fid,
8a1ab5d7
JP		 704 false, false);
705 else
706 return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
707 mlxsw_sp_port->lag_id,
9de6a80e 708 fdb->addr, fid,
8a1ab5d7 709 false, false);
56ade8fe
JP		 710}
711
712static int mlxsw_sp_port_obj_del(struct net_device *dev,
713 const struct switchdev_obj *obj)
714{
715 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
716 int err = 0;
717
718 switch (obj->id) {
719 case SWITCHDEV_OBJ_ID_PORT_VLAN:
720 err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
721 SWITCHDEV_OBJ_PORT_VLAN(obj));
722 break;
723 case SWITCHDEV_OBJ_ID_PORT_FDB:
724 err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
725 SWITCHDEV_OBJ_PORT_FDB(obj));
726 break;
727 default:
728 err = -EOPNOTSUPP;
729 break;
730 }
731
732 return err;
733}
734
8a1ab5d7
JP		 735static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
736 u16 lag_id)
737{
738 struct mlxsw_sp_port *mlxsw_sp_port;
739 int i;
740
741 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
742 mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
743 if (mlxsw_sp_port)
744 return mlxsw_sp_port;
745 }
746 return NULL;
747}
748
56ade8fe
JP		 749static int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
750 struct switchdev_obj_port_fdb *fdb,
751 switchdev_obj_dump_cb_t *cb)
752{
8a1ab5d7 753 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
56ade8fe
JP		 754 char *sfd_pl;
755 char mac[ETH_ALEN];
9de6a80e 756 u16 fid;
56ade8fe 757 u8 local_port;
8a1ab5d7 758 u16 lag_id;
56ade8fe
JP		 759 u8 num_rec;
760 int stored_err = 0;
761 int i;
762 int err;
763
764 sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
765 if (!sfd_pl)
766 return -ENOMEM;
767
768 mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
769 do {
770 mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
8a1ab5d7 771 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
56ade8fe
JP		 772 if (err)
773 goto out;
774
775 num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
776
777 /* Even in case of error, we have to run the dump to the end
778 * so the session in firmware is finished.
779 */
780 if (stored_err)
781 continue;
782
783 for (i = 0; i < num_rec; i++) {
784 switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
785 case MLXSW_REG_SFD_REC_TYPE_UNICAST:
9de6a80e 786 mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
56ade8fe
JP		 787 &local_port);
788 if (local_port == mlxsw_sp_port->local_port) {
789 ether_addr_copy(fdb->addr, mac);
790 fdb->ndm_state = NUD_REACHABLE;
9de6a80e 791 fdb->vid = fid;
56ade8fe
JP		 792 err = cb(&fdb->obj);
793 if (err)
794 stored_err = err;
795 }
8a1ab5d7
JP		 796 break;
797 case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
798 mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
9de6a80e 799 mac, &fid, &lag_id);
8a1ab5d7
JP		 800 if (mlxsw_sp_port ==
801 mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id)) {
802 ether_addr_copy(fdb->addr, mac);
803 fdb->ndm_state = NUD_REACHABLE;
9de6a80e 804 fdb->vid = fid;
8a1ab5d7
JP		 805 err = cb(&fdb->obj);
806 if (err)
807 stored_err = err;
808 }
809 break;
56ade8fe
JP		 810 }
811 }
812 } while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
813
814out:
815 kfree(sfd_pl);
816 return stored_err ? stored_err : err;
817}
818
819static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
820 struct switchdev_obj_port_vlan *vlan,
821 switchdev_obj_dump_cb_t *cb)
822{
823 u16 vid;
824 int err = 0;
825
826 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
827 vlan->flags = 0;
828 if (vid == mlxsw_sp_port->pvid)
829 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
830 vlan->vid_begin = vid;
831 vlan->vid_end = vid;
832 err = cb(&vlan->obj);
833 if (err)
834 break;
835 }
836 return err;
837}
838
839static int mlxsw_sp_port_obj_dump(struct net_device *dev,
840 struct switchdev_obj *obj,
841 switchdev_obj_dump_cb_t *cb)
842{
843 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
844 int err = 0;
845
846 switch (obj->id) {
847 case SWITCHDEV_OBJ_ID_PORT_VLAN:
848 err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
849 SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
850 break;
851 case SWITCHDEV_OBJ_ID_PORT_FDB:
852 err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
853 SWITCHDEV_OBJ_PORT_FDB(obj), cb);
854 break;
855 default:
856 err = -EOPNOTSUPP;
857 break;
858 }
859
860 return err;
861}
862
c7070fc4 863static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
56ade8fe
JP		 864 .switchdev_port_attr_get = mlxsw_sp_port_attr_get,
865 .switchdev_port_attr_set = mlxsw_sp_port_attr_set,
866 .switchdev_port_obj_add = mlxsw_sp_port_obj_add,
867 .switchdev_port_obj_del = mlxsw_sp_port_obj_del,
868 .switchdev_port_obj_dump = mlxsw_sp_port_obj_dump,
869};
870
8a1ab5d7
JP		 871static void mlxsw_sp_fdb_call_notifiers(bool learning, bool learning_sync,
872 bool adding, char *mac, u16 vid,
873 struct net_device *dev)
874{
875 struct switchdev_notifier_fdb_info info;
876 unsigned long notifier_type;
877
878 if (learning && learning_sync) {
879 info.addr = mac;
880 info.vid = vid;
881 notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
882 call_switchdev_notifiers(notifier_type, dev, &info.info);
883 }
884}
885
56ade8fe
JP		 886static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
887 char *sfn_pl, int rec_index,
888 bool adding)
889{
890 struct mlxsw_sp_port *mlxsw_sp_port;
891 char mac[ETH_ALEN];
892 u8 local_port;
9de6a80e 893 u16 vid, fid;
56ade8fe
JP		 894 int err;
895
9de6a80e 896 mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
56ade8fe
JP		 897 mlxsw_sp_port = mlxsw_sp->ports[local_port];
898 if (!mlxsw_sp_port) {
899 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
900 return;
901 }
902
9de6a80e 903 err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port, mac, fid,
8a1ab5d7 904 adding && mlxsw_sp_port->learning, true);
56ade8fe
JP		 905 if (err) {
906 if (net_ratelimit())
907 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
908 return;
909 }
910
9de6a80e
IS		 911 vid = fid;
912
8a1ab5d7
JP		 913 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
914 mlxsw_sp_port->learning_sync,
915 adding, mac, vid, mlxsw_sp_port->dev);
916}
56ade8fe 917
8a1ab5d7
JP		 918static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
919 char *sfn_pl, int rec_index,
920 bool adding)
921{
922 struct mlxsw_sp_port *mlxsw_sp_port;
923 char mac[ETH_ALEN];
924 u16 lag_id;
9de6a80e 925 u16 vid, fid;
8a1ab5d7
JP		 926 int err;
927
9de6a80e 928 mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
8a1ab5d7
JP		 929 mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
930 if (!mlxsw_sp_port) {
931 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
932 return;
56ade8fe 933 }
8a1ab5d7 934
9de6a80e 935 err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid,
8a1ab5d7
JP		 936 adding && mlxsw_sp_port->learning,
937 true);
938 if (err) {
939 if (net_ratelimit())
940 netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
941 return;
942 }
943
9de6a80e
IS		 944 vid = fid;
945
8a1ab5d7
JP		 946 mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning,
947 mlxsw_sp_port->learning_sync,
948 adding, mac, vid,
949 mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev);
56ade8fe
JP		 950}
951
952static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
953 char *sfn_pl, int rec_index)
954{
955 switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
956 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
957 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
958 rec_index, true);
959 break;
960 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
961 mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
962 rec_index, false);
963 break;
8a1ab5d7
JP		 964 case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
965 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
966 rec_index, true);
967 break;
968 case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
969 mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
970 rec_index, false);
971 break;
56ade8fe
JP		 972 }
973}
974
975static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
976{
977 schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
978 msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
979}
980
981static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
982{
983 struct mlxsw_sp *mlxsw_sp;
984 char *sfn_pl;
985 u8 num_rec;
986 int i;
987 int err;
988
989 sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
990 if (!sfn_pl)
991 return;
992
993 mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
994
995 do {
996 mlxsw_reg_sfn_pack(sfn_pl);
997 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
998 if (err) {
999 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
1000 break;
1001 }
1002 num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
1003 for (i = 0; i < num_rec; i++)
1004 mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
1005
1006 } while (num_rec);
1007
1008 kfree(sfn_pl);
1009 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1010}
1011
1012static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
1013{
1014 int err;
1015
1016 err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
1017 if (err) {
1018 dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
1019 return err;
1020 }
1021 INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
1022 mlxsw_sp->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
1023 mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
1024 return 0;
1025}
1026
1027static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
1028{
1029 cancel_delayed_work_sync(&mlxsw_sp->fdb_notify.dw);
1030}
1031
1032static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
1033{
1034 u16 fid;
1035
1036 for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
1037 mlxsw_sp_fid_destroy(mlxsw_sp, fid);
1038}
1039
1040int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
1041{
1042 return mlxsw_sp_fdb_init(mlxsw_sp);
1043}
1044
1045void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
1046{
1047 mlxsw_sp_fdb_fini(mlxsw_sp);
1048 mlxsw_sp_fids_fini(mlxsw_sp);
1049}
1050
1051int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
1052{
1053 struct net_device *dev = mlxsw_sp_port->dev;
1054 int err;
1055
1056 /* Allow only untagged packets to ingress and tag them internally
1057 * with VID 1.
1058 */
1059 mlxsw_sp_port->pvid = 1;
1060 err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID, true);
1061 if (err) {
1062 netdev_err(dev, "Unable to init VLANs\n");
1063 return err;
1064 }
1065
1066 /* Add implicit VLAN interface in the device, so that untagged
1067 * packets will be classified to the default vFID.
1068 */
1069 err = mlxsw_sp_port_add_vid(dev, 0, 1);
1070 if (err)
1071 netdev_err(dev, "Failed to configure default vFID\n");
1072
1073 return err;
1074}
1075
1076void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
1077{
1078 mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
1079}
1080
1081void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1082{
1083}
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