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Merge branch 'dmi/master'
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlxsw / spectrum.c
1 /*
2 * drivers/net/ethernet/mellanox/mlxsw/spectrum.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/module.h>
39 #include <linux/types.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/ethtool.h>
43 #include <linux/slab.h>
44 #include <linux/device.h>
45 #include <linux/skbuff.h>
46 #include <linux/if_vlan.h>
47 #include <linux/if_bridge.h>
48 #include <linux/workqueue.h>
49 #include <linux/jiffies.h>
50 #include <linux/bitops.h>
51 #include <linux/list.h>
52 #include <linux/notifier.h>
53 #include <linux/dcbnl.h>
54 #include <linux/inetdevice.h>
55 #include <net/switchdev.h>
56 #include <generated/utsrelease.h>
57 #include <net/pkt_cls.h>
58 #include <net/tc_act/tc_mirred.h>
59 #include <net/netevent.h>
60
61 #include "spectrum.h"
62 #include "core.h"
63 #include "reg.h"
64 #include "port.h"
65 #include "trap.h"
66 #include "txheader.h"
67
68 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
69 static const char mlxsw_sp_driver_version[] = "1.0";
70
71 /* tx_hdr_version
72 * Tx header version.
73 * Must be set to 1.
74 */
75 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
76
77 /* tx_hdr_ctl
78 * Packet control type.
79 * 0 - Ethernet control (e.g. EMADs, LACP)
80 * 1 - Ethernet data
81 */
82 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
83
84 /* tx_hdr_proto
85 * Packet protocol type. Must be set to 1 (Ethernet).
86 */
87 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
88
89 /* tx_hdr_rx_is_router
90 * Packet is sent from the router. Valid for data packets only.
91 */
92 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
93
94 /* tx_hdr_fid_valid
95 * Indicates if the 'fid' field is valid and should be used for
96 * forwarding lookup. Valid for data packets only.
97 */
98 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
99
100 /* tx_hdr_swid
101 * Switch partition ID. Must be set to 0.
102 */
103 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
104
105 /* tx_hdr_control_tclass
106 * Indicates if the packet should use the control TClass and not one
107 * of the data TClasses.
108 */
109 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
110
111 /* tx_hdr_etclass
112 * Egress TClass to be used on the egress device on the egress port.
113 */
114 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
115
116 /* tx_hdr_port_mid
117 * Destination local port for unicast packets.
118 * Destination multicast ID for multicast packets.
119 *
120 * Control packets are directed to a specific egress port, while data
121 * packets are transmitted through the CPU port (0) into the switch partition,
122 * where forwarding rules are applied.
123 */
124 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
125
126 /* tx_hdr_fid
127 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
128 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
129 * Valid for data packets only.
130 */
131 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
132
133 /* tx_hdr_type
134 * 0 - Data packets
135 * 6 - Control packets
136 */
137 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
138
139 static bool mlxsw_sp_port_dev_check(const struct net_device *dev);
140
141 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
142 const struct mlxsw_tx_info *tx_info)
143 {
144 char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
145
146 memset(txhdr, 0, MLXSW_TXHDR_LEN);
147
148 mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
149 mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
150 mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
151 mlxsw_tx_hdr_swid_set(txhdr, 0);
152 mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
153 mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
154 mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
155 }
156
157 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
158 {
159 char spad_pl[MLXSW_REG_SPAD_LEN];
160 int err;
161
162 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
163 if (err)
164 return err;
165 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
166 return 0;
167 }
168
169 static int mlxsw_sp_span_init(struct mlxsw_sp *mlxsw_sp)
170 {
171 struct mlxsw_resources *resources;
172 int i;
173
174 resources = mlxsw_core_resources_get(mlxsw_sp->core);
175 if (!resources->max_span_valid)
176 return -EIO;
177
178 mlxsw_sp->span.entries_count = resources->max_span;
179 mlxsw_sp->span.entries = kcalloc(mlxsw_sp->span.entries_count,
180 sizeof(struct mlxsw_sp_span_entry),
181 GFP_KERNEL);
182 if (!mlxsw_sp->span.entries)
183 return -ENOMEM;
184
185 for (i = 0; i < mlxsw_sp->span.entries_count; i++)
186 INIT_LIST_HEAD(&mlxsw_sp->span.entries[i].bound_ports_list);
187
188 return 0;
189 }
190
191 static void mlxsw_sp_span_fini(struct mlxsw_sp *mlxsw_sp)
192 {
193 int i;
194
195 for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
196 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
197
198 WARN_ON_ONCE(!list_empty(&curr->bound_ports_list));
199 }
200 kfree(mlxsw_sp->span.entries);
201 }
202
203 static struct mlxsw_sp_span_entry *
204 mlxsw_sp_span_entry_create(struct mlxsw_sp_port *port)
205 {
206 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
207 struct mlxsw_sp_span_entry *span_entry;
208 char mpat_pl[MLXSW_REG_MPAT_LEN];
209 u8 local_port = port->local_port;
210 int index;
211 int i;
212 int err;
213
214 /* find a free entry to use */
215 index = -1;
216 for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
217 if (!mlxsw_sp->span.entries[i].used) {
218 index = i;
219 span_entry = &mlxsw_sp->span.entries[i];
220 break;
221 }
222 }
223 if (index < 0)
224 return NULL;
225
226 /* create a new port analayzer entry for local_port */
227 mlxsw_reg_mpat_pack(mpat_pl, index, local_port, true);
228 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
229 if (err)
230 return NULL;
231
232 span_entry->used = true;
233 span_entry->id = index;
234 span_entry->ref_count = 0;
235 span_entry->local_port = local_port;
236 return span_entry;
237 }
238
239 static void mlxsw_sp_span_entry_destroy(struct mlxsw_sp *mlxsw_sp,
240 struct mlxsw_sp_span_entry *span_entry)
241 {
242 u8 local_port = span_entry->local_port;
243 char mpat_pl[MLXSW_REG_MPAT_LEN];
244 int pa_id = span_entry->id;
245
246 mlxsw_reg_mpat_pack(mpat_pl, pa_id, local_port, false);
247 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpat), mpat_pl);
248 span_entry->used = false;
249 }
250
251 struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_find(struct mlxsw_sp_port *port)
252 {
253 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
254 int i;
255
256 for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
257 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
258
259 if (curr->used && curr->local_port == port->local_port)
260 return curr;
261 }
262 return NULL;
263 }
264
265 struct mlxsw_sp_span_entry *mlxsw_sp_span_entry_get(struct mlxsw_sp_port *port)
266 {
267 struct mlxsw_sp_span_entry *span_entry;
268
269 span_entry = mlxsw_sp_span_entry_find(port);
270 if (span_entry) {
271 span_entry->ref_count++;
272 return span_entry;
273 }
274
275 return mlxsw_sp_span_entry_create(port);
276 }
277
278 static int mlxsw_sp_span_entry_put(struct mlxsw_sp *mlxsw_sp,
279 struct mlxsw_sp_span_entry *span_entry)
280 {
281 if (--span_entry->ref_count == 0)
282 mlxsw_sp_span_entry_destroy(mlxsw_sp, span_entry);
283 return 0;
284 }
285
286 static bool mlxsw_sp_span_is_egress_mirror(struct mlxsw_sp_port *port)
287 {
288 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
289 struct mlxsw_sp_span_inspected_port *p;
290 int i;
291
292 for (i = 0; i < mlxsw_sp->span.entries_count; i++) {
293 struct mlxsw_sp_span_entry *curr = &mlxsw_sp->span.entries[i];
294
295 list_for_each_entry(p, &curr->bound_ports_list, list)
296 if (p->local_port == port->local_port &&
297 p->type == MLXSW_SP_SPAN_EGRESS)
298 return true;
299 }
300
301 return false;
302 }
303
304 static int mlxsw_sp_span_mtu_to_buffsize(int mtu)
305 {
306 return MLXSW_SP_BYTES_TO_CELLS(mtu * 5 / 2) + 1;
307 }
308
309 static int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu)
310 {
311 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
312 char sbib_pl[MLXSW_REG_SBIB_LEN];
313 int err;
314
315 /* If port is egress mirrored, the shared buffer size should be
316 * updated according to the mtu value
317 */
318 if (mlxsw_sp_span_is_egress_mirror(port)) {
319 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
320 mlxsw_sp_span_mtu_to_buffsize(mtu));
321 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
322 if (err) {
323 netdev_err(port->dev, "Could not update shared buffer for mirroring\n");
324 return err;
325 }
326 }
327
328 return 0;
329 }
330
331 static struct mlxsw_sp_span_inspected_port *
332 mlxsw_sp_span_entry_bound_port_find(struct mlxsw_sp_port *port,
333 struct mlxsw_sp_span_entry *span_entry)
334 {
335 struct mlxsw_sp_span_inspected_port *p;
336
337 list_for_each_entry(p, &span_entry->bound_ports_list, list)
338 if (port->local_port == p->local_port)
339 return p;
340 return NULL;
341 }
342
343 static int
344 mlxsw_sp_span_inspected_port_bind(struct mlxsw_sp_port *port,
345 struct mlxsw_sp_span_entry *span_entry,
346 enum mlxsw_sp_span_type type)
347 {
348 struct mlxsw_sp_span_inspected_port *inspected_port;
349 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
350 char mpar_pl[MLXSW_REG_MPAR_LEN];
351 char sbib_pl[MLXSW_REG_SBIB_LEN];
352 int pa_id = span_entry->id;
353 int err;
354
355 /* if it is an egress SPAN, bind a shared buffer to it */
356 if (type == MLXSW_SP_SPAN_EGRESS) {
357 mlxsw_reg_sbib_pack(sbib_pl, port->local_port,
358 mlxsw_sp_span_mtu_to_buffsize(port->dev->mtu));
359 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
360 if (err) {
361 netdev_err(port->dev, "Could not create shared buffer for mirroring\n");
362 return err;
363 }
364 }
365
366 /* bind the port to the SPAN entry */
367 mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, true, pa_id);
368 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
369 if (err)
370 goto err_mpar_reg_write;
371
372 inspected_port = kzalloc(sizeof(*inspected_port), GFP_KERNEL);
373 if (!inspected_port) {
374 err = -ENOMEM;
375 goto err_inspected_port_alloc;
376 }
377 inspected_port->local_port = port->local_port;
378 inspected_port->type = type;
379 list_add_tail(&inspected_port->list, &span_entry->bound_ports_list);
380
381 return 0;
382
383 err_mpar_reg_write:
384 err_inspected_port_alloc:
385 if (type == MLXSW_SP_SPAN_EGRESS) {
386 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
387 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
388 }
389 return err;
390 }
391
392 static void
393 mlxsw_sp_span_inspected_port_unbind(struct mlxsw_sp_port *port,
394 struct mlxsw_sp_span_entry *span_entry,
395 enum mlxsw_sp_span_type type)
396 {
397 struct mlxsw_sp_span_inspected_port *inspected_port;
398 struct mlxsw_sp *mlxsw_sp = port->mlxsw_sp;
399 char mpar_pl[MLXSW_REG_MPAR_LEN];
400 char sbib_pl[MLXSW_REG_SBIB_LEN];
401 int pa_id = span_entry->id;
402
403 inspected_port = mlxsw_sp_span_entry_bound_port_find(port, span_entry);
404 if (!inspected_port)
405 return;
406
407 /* remove the inspected port */
408 mlxsw_reg_mpar_pack(mpar_pl, port->local_port, type, false, pa_id);
409 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpar), mpar_pl);
410
411 /* remove the SBIB buffer if it was egress SPAN */
412 if (type == MLXSW_SP_SPAN_EGRESS) {
413 mlxsw_reg_sbib_pack(sbib_pl, port->local_port, 0);
414 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
415 }
416
417 mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
418
419 list_del(&inspected_port->list);
420 kfree(inspected_port);
421 }
422
423 static int mlxsw_sp_span_mirror_add(struct mlxsw_sp_port *from,
424 struct mlxsw_sp_port *to,
425 enum mlxsw_sp_span_type type)
426 {
427 struct mlxsw_sp *mlxsw_sp = from->mlxsw_sp;
428 struct mlxsw_sp_span_entry *span_entry;
429 int err;
430
431 span_entry = mlxsw_sp_span_entry_get(to);
432 if (!span_entry)
433 return -ENOENT;
434
435 netdev_dbg(from->dev, "Adding inspected port to SPAN entry %d\n",
436 span_entry->id);
437
438 err = mlxsw_sp_span_inspected_port_bind(from, span_entry, type);
439 if (err)
440 goto err_port_bind;
441
442 return 0;
443
444 err_port_bind:
445 mlxsw_sp_span_entry_put(mlxsw_sp, span_entry);
446 return err;
447 }
448
449 static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from,
450 struct mlxsw_sp_port *to,
451 enum mlxsw_sp_span_type type)
452 {
453 struct mlxsw_sp_span_entry *span_entry;
454
455 span_entry = mlxsw_sp_span_entry_find(to);
456 if (!span_entry) {
457 netdev_err(from->dev, "no span entry found\n");
458 return;
459 }
460
461 netdev_dbg(from->dev, "removing inspected port from SPAN entry %d\n",
462 span_entry->id);
463 mlxsw_sp_span_inspected_port_unbind(from, span_entry, type);
464 }
465
466 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
467 bool is_up)
468 {
469 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
470 char paos_pl[MLXSW_REG_PAOS_LEN];
471
472 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
473 is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
474 MLXSW_PORT_ADMIN_STATUS_DOWN);
475 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
476 }
477
478 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
479 unsigned char *addr)
480 {
481 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
482 char ppad_pl[MLXSW_REG_PPAD_LEN];
483
484 mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
485 mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
486 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
487 }
488
489 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
490 {
491 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
492 unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
493
494 ether_addr_copy(addr, mlxsw_sp->base_mac);
495 addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
496 return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
497 }
498
499 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
500 {
501 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
502 char pmtu_pl[MLXSW_REG_PMTU_LEN];
503 int max_mtu;
504 int err;
505
506 mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
507 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
508 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
509 if (err)
510 return err;
511 max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
512
513 if (mtu > max_mtu)
514 return -EINVAL;
515
516 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
517 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
518 }
519
520 static int __mlxsw_sp_port_swid_set(struct mlxsw_sp *mlxsw_sp, u8 local_port,
521 u8 swid)
522 {
523 char pspa_pl[MLXSW_REG_PSPA_LEN];
524
525 mlxsw_reg_pspa_pack(pspa_pl, swid, local_port);
526 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
527 }
528
529 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
530 {
531 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
532
533 return __mlxsw_sp_port_swid_set(mlxsw_sp, mlxsw_sp_port->local_port,
534 swid);
535 }
536
537 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
538 bool enable)
539 {
540 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
541 char svpe_pl[MLXSW_REG_SVPE_LEN];
542
543 mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
544 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
545 }
546
547 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
548 enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
549 u16 vid)
550 {
551 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
552 char svfa_pl[MLXSW_REG_SVFA_LEN];
553
554 mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
555 fid, vid);
556 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
557 }
558
559 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
560 u16 vid, bool learn_enable)
561 {
562 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
563 char *spvmlr_pl;
564 int err;
565
566 spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
567 if (!spvmlr_pl)
568 return -ENOMEM;
569 mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
570 learn_enable);
571 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
572 kfree(spvmlr_pl);
573 return err;
574 }
575
576 static int
577 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
578 {
579 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
580 char sspr_pl[MLXSW_REG_SSPR_LEN];
581
582 mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
583 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
584 }
585
586 static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
587 u8 local_port, u8 *p_module,
588 u8 *p_width, u8 *p_lane)
589 {
590 char pmlp_pl[MLXSW_REG_PMLP_LEN];
591 int err;
592
593 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
594 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
595 if (err)
596 return err;
597 *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
598 *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
599 *p_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
600 return 0;
601 }
602
603 static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
604 u8 module, u8 width, u8 lane)
605 {
606 char pmlp_pl[MLXSW_REG_PMLP_LEN];
607 int i;
608
609 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
610 mlxsw_reg_pmlp_width_set(pmlp_pl, width);
611 for (i = 0; i < width; i++) {
612 mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
613 mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i); /* Rx & Tx */
614 }
615
616 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
617 }
618
619 static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
620 {
621 char pmlp_pl[MLXSW_REG_PMLP_LEN];
622
623 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
624 mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
625 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
626 }
627
628 static int mlxsw_sp_port_open(struct net_device *dev)
629 {
630 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
631 int err;
632
633 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
634 if (err)
635 return err;
636 netif_start_queue(dev);
637 return 0;
638 }
639
640 static int mlxsw_sp_port_stop(struct net_device *dev)
641 {
642 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
643
644 netif_stop_queue(dev);
645 return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
646 }
647
648 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
649 struct net_device *dev)
650 {
651 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
652 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
653 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
654 const struct mlxsw_tx_info tx_info = {
655 .local_port = mlxsw_sp_port->local_port,
656 .is_emad = false,
657 };
658 u64 len;
659 int err;
660
661 if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info))
662 return NETDEV_TX_BUSY;
663
664 if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
665 struct sk_buff *skb_orig = skb;
666
667 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
668 if (!skb) {
669 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
670 dev_kfree_skb_any(skb_orig);
671 return NETDEV_TX_OK;
672 }
673 }
674
675 if (eth_skb_pad(skb)) {
676 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
677 return NETDEV_TX_OK;
678 }
679
680 mlxsw_sp_txhdr_construct(skb, &tx_info);
681 /* TX header is consumed by HW on the way so we shouldn't count its
682 * bytes as being sent.
683 */
684 len = skb->len - MLXSW_TXHDR_LEN;
685
686 /* Due to a race we might fail here because of a full queue. In that
687 * unlikely case we simply drop the packet.
688 */
689 err = mlxsw_core_skb_transmit(mlxsw_sp->core, skb, &tx_info);
690
691 if (!err) {
692 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
693 u64_stats_update_begin(&pcpu_stats->syncp);
694 pcpu_stats->tx_packets++;
695 pcpu_stats->tx_bytes += len;
696 u64_stats_update_end(&pcpu_stats->syncp);
697 } else {
698 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
699 dev_kfree_skb_any(skb);
700 }
701 return NETDEV_TX_OK;
702 }
703
704 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
705 {
706 }
707
708 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
709 {
710 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
711 struct sockaddr *addr = p;
712 int err;
713
714 if (!is_valid_ether_addr(addr->sa_data))
715 return -EADDRNOTAVAIL;
716
717 err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
718 if (err)
719 return err;
720 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
721 return 0;
722 }
723
724 static void mlxsw_sp_pg_buf_pack(char *pbmc_pl, int pg_index, int mtu,
725 bool pause_en, bool pfc_en, u16 delay)
726 {
727 u16 pg_size = 2 * MLXSW_SP_BYTES_TO_CELLS(mtu);
728
729 delay = pfc_en ? mlxsw_sp_pfc_delay_get(mtu, delay) :
730 MLXSW_SP_PAUSE_DELAY;
731
732 if (pause_en || pfc_en)
733 mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, pg_index,
734 pg_size + delay, pg_size);
735 else
736 mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pg_index, pg_size);
737 }
738
739 int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
740 u8 *prio_tc, bool pause_en,
741 struct ieee_pfc *my_pfc)
742 {
743 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
744 u8 pfc_en = !!my_pfc ? my_pfc->pfc_en : 0;
745 u16 delay = !!my_pfc ? my_pfc->delay : 0;
746 char pbmc_pl[MLXSW_REG_PBMC_LEN];
747 int i, j, err;
748
749 mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0, 0);
750 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
751 if (err)
752 return err;
753
754 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
755 bool configure = false;
756 bool pfc = false;
757
758 for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
759 if (prio_tc[j] == i) {
760 pfc = pfc_en & BIT(j);
761 configure = true;
762 break;
763 }
764 }
765
766 if (!configure)
767 continue;
768 mlxsw_sp_pg_buf_pack(pbmc_pl, i, mtu, pause_en, pfc, delay);
769 }
770
771 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
772 }
773
774 static int mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port,
775 int mtu, bool pause_en)
776 {
777 u8 def_prio_tc[IEEE_8021QAZ_MAX_TCS] = {0};
778 bool dcb_en = !!mlxsw_sp_port->dcb.ets;
779 struct ieee_pfc *my_pfc;
780 u8 *prio_tc;
781
782 prio_tc = dcb_en ? mlxsw_sp_port->dcb.ets->prio_tc : def_prio_tc;
783 my_pfc = dcb_en ? mlxsw_sp_port->dcb.pfc : NULL;
784
785 return __mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, prio_tc,
786 pause_en, my_pfc);
787 }
788
789 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
790 {
791 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
792 bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
793 int err;
794
795 err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, mtu, pause_en);
796 if (err)
797 return err;
798 err = mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, mtu);
799 if (err)
800 goto err_span_port_mtu_update;
801 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
802 if (err)
803 goto err_port_mtu_set;
804 dev->mtu = mtu;
805 return 0;
806
807 err_port_mtu_set:
808 mlxsw_sp_span_port_mtu_update(mlxsw_sp_port, dev->mtu);
809 err_span_port_mtu_update:
810 mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
811 return err;
812 }
813
814 static struct rtnl_link_stats64 *
815 mlxsw_sp_port_get_stats64(struct net_device *dev,
816 struct rtnl_link_stats64 *stats)
817 {
818 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
819 struct mlxsw_sp_port_pcpu_stats *p;
820 u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
821 u32 tx_dropped = 0;
822 unsigned int start;
823 int i;
824
825 for_each_possible_cpu(i) {
826 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
827 do {
828 start = u64_stats_fetch_begin_irq(&p->syncp);
829 rx_packets = p->rx_packets;
830 rx_bytes = p->rx_bytes;
831 tx_packets = p->tx_packets;
832 tx_bytes = p->tx_bytes;
833 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
834
835 stats->rx_packets += rx_packets;
836 stats->rx_bytes += rx_bytes;
837 stats->tx_packets += tx_packets;
838 stats->tx_bytes += tx_bytes;
839 /* tx_dropped is u32, updated without syncp protection. */
840 tx_dropped += p->tx_dropped;
841 }
842 stats->tx_dropped = tx_dropped;
843 return stats;
844 }
845
846 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
847 u16 vid_end, bool is_member, bool untagged)
848 {
849 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
850 char *spvm_pl;
851 int err;
852
853 spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
854 if (!spvm_pl)
855 return -ENOMEM;
856
857 mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
858 vid_end, is_member, untagged);
859 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
860 kfree(spvm_pl);
861 return err;
862 }
863
864 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
865 {
866 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
867 u16 vid, last_visited_vid;
868 int err;
869
870 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
871 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
872 vid);
873 if (err) {
874 last_visited_vid = vid;
875 goto err_port_vid_to_fid_set;
876 }
877 }
878
879 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
880 if (err) {
881 last_visited_vid = VLAN_N_VID;
882 goto err_port_vid_to_fid_set;
883 }
884
885 return 0;
886
887 err_port_vid_to_fid_set:
888 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
889 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
890 vid);
891 return err;
892 }
893
894 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
895 {
896 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
897 u16 vid;
898 int err;
899
900 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
901 if (err)
902 return err;
903
904 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
905 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
906 vid, vid);
907 if (err)
908 return err;
909 }
910
911 return 0;
912 }
913
914 static struct mlxsw_sp_port *
915 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
916 {
917 struct mlxsw_sp_port *mlxsw_sp_vport;
918
919 mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
920 if (!mlxsw_sp_vport)
921 return NULL;
922
923 /* dev will be set correctly after the VLAN device is linked
924 * with the real device. In case of bridge SELF invocation, dev
925 * will remain as is.
926 */
927 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
928 mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
929 mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
930 mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
931 mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
932 mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
933 mlxsw_sp_vport->vport.vid = vid;
934
935 list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
936
937 return mlxsw_sp_vport;
938 }
939
940 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
941 {
942 list_del(&mlxsw_sp_vport->vport.list);
943 kfree(mlxsw_sp_vport);
944 }
945
946 static int mlxsw_sp_port_add_vid(struct net_device *dev,
947 __be16 __always_unused proto, u16 vid)
948 {
949 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
950 struct mlxsw_sp_port *mlxsw_sp_vport;
951 bool untagged = vid == 1;
952 int err;
953
954 /* VLAN 0 is added to HW filter when device goes up, but it is
955 * reserved in our case, so simply return.
956 */
957 if (!vid)
958 return 0;
959
960 if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid))
961 return 0;
962
963 mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vid);
964 if (!mlxsw_sp_vport)
965 return -ENOMEM;
966
967 /* When adding the first VLAN interface on a bridged port we need to
968 * transition all the active 802.1Q bridge VLANs to use explicit
969 * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
970 */
971 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
972 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
973 if (err)
974 goto err_port_vp_mode_trans;
975 }
976
977 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
978 if (err)
979 goto err_port_vid_learning_set;
980
981 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, untagged);
982 if (err)
983 goto err_port_add_vid;
984
985 return 0;
986
987 err_port_add_vid:
988 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
989 err_port_vid_learning_set:
990 if (list_is_singular(&mlxsw_sp_port->vports_list))
991 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
992 err_port_vp_mode_trans:
993 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
994 return err;
995 }
996
997 static int mlxsw_sp_port_kill_vid(struct net_device *dev,
998 __be16 __always_unused proto, u16 vid)
999 {
1000 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1001 struct mlxsw_sp_port *mlxsw_sp_vport;
1002 struct mlxsw_sp_fid *f;
1003
1004 /* VLAN 0 is removed from HW filter when device goes down, but
1005 * it is reserved in our case, so simply return.
1006 */
1007 if (!vid)
1008 return 0;
1009
1010 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
1011 if (WARN_ON(!mlxsw_sp_vport))
1012 return 0;
1013
1014 mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
1015
1016 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
1017
1018 /* Drop FID reference. If this was the last reference the
1019 * resources will be freed.
1020 */
1021 f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
1022 if (f && !WARN_ON(!f->leave))
1023 f->leave(mlxsw_sp_vport);
1024
1025 /* When removing the last VLAN interface on a bridged port we need to
1026 * transition all active 802.1Q bridge VLANs to use VID to FID
1027 * mappings and set port's mode to VLAN mode.
1028 */
1029 if (list_is_singular(&mlxsw_sp_port->vports_list))
1030 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
1031
1032 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
1033
1034 return 0;
1035 }
1036
1037 static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
1038 size_t len)
1039 {
1040 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1041 u8 module = mlxsw_sp_port->mapping.module;
1042 u8 width = mlxsw_sp_port->mapping.width;
1043 u8 lane = mlxsw_sp_port->mapping.lane;
1044 int err;
1045
1046 if (!mlxsw_sp_port->split)
1047 err = snprintf(name, len, "p%d", module + 1);
1048 else
1049 err = snprintf(name, len, "p%ds%d", module + 1,
1050 lane / width);
1051
1052 if (err >= len)
1053 return -EINVAL;
1054
1055 return 0;
1056 }
1057
1058 static struct mlxsw_sp_port_mall_tc_entry *
1059 mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
1060 unsigned long cookie) {
1061 struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1062
1063 list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
1064 if (mall_tc_entry->cookie == cookie)
1065 return mall_tc_entry;
1066
1067 return NULL;
1068 }
1069
1070 static int
1071 mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
1072 struct tc_cls_matchall_offload *cls,
1073 const struct tc_action *a,
1074 bool ingress)
1075 {
1076 struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1077 struct net *net = dev_net(mlxsw_sp_port->dev);
1078 enum mlxsw_sp_span_type span_type;
1079 struct mlxsw_sp_port *to_port;
1080 struct net_device *to_dev;
1081 int ifindex;
1082 int err;
1083
1084 ifindex = tcf_mirred_ifindex(a);
1085 to_dev = __dev_get_by_index(net, ifindex);
1086 if (!to_dev) {
1087 netdev_err(mlxsw_sp_port->dev, "Could not find requested device\n");
1088 return -EINVAL;
1089 }
1090
1091 if (!mlxsw_sp_port_dev_check(to_dev)) {
1092 netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
1093 return -ENOTSUPP;
1094 }
1095 to_port = netdev_priv(to_dev);
1096
1097 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
1098 if (!mall_tc_entry)
1099 return -ENOMEM;
1100
1101 mall_tc_entry->cookie = cls->cookie;
1102 mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
1103 mall_tc_entry->mirror.to_local_port = to_port->local_port;
1104 mall_tc_entry->mirror.ingress = ingress;
1105 list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
1106
1107 span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1108 err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
1109 if (err)
1110 goto err_mirror_add;
1111 return 0;
1112
1113 err_mirror_add:
1114 list_del(&mall_tc_entry->list);
1115 kfree(mall_tc_entry);
1116 return err;
1117 }
1118
1119 static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1120 __be16 protocol,
1121 struct tc_cls_matchall_offload *cls,
1122 bool ingress)
1123 {
1124 const struct tc_action *a;
1125 LIST_HEAD(actions);
1126 int err;
1127
1128 if (!tc_single_action(cls->exts)) {
1129 netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
1130 return -ENOTSUPP;
1131 }
1132
1133 tcf_exts_to_list(cls->exts, &actions);
1134 list_for_each_entry(a, &actions, list) {
1135 if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))
1136 return -ENOTSUPP;
1137
1138 err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
1139 a, ingress);
1140 if (err)
1141 return err;
1142 }
1143
1144 return 0;
1145 }
1146
1147 static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
1148 struct tc_cls_matchall_offload *cls)
1149 {
1150 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1151 struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
1152 enum mlxsw_sp_span_type span_type;
1153 struct mlxsw_sp_port *to_port;
1154
1155 mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
1156 cls->cookie);
1157 if (!mall_tc_entry) {
1158 netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
1159 return;
1160 }
1161
1162 switch (mall_tc_entry->type) {
1163 case MLXSW_SP_PORT_MALL_MIRROR:
1164 to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
1165 span_type = mall_tc_entry->mirror.ingress ?
1166 MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
1167
1168 mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
1169 break;
1170 default:
1171 WARN_ON(1);
1172 }
1173
1174 list_del(&mall_tc_entry->list);
1175 kfree(mall_tc_entry);
1176 }
1177
1178 static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
1179 __be16 proto, struct tc_to_netdev *tc)
1180 {
1181 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1182 bool ingress = TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS);
1183
1184 if (tc->type == TC_SETUP_MATCHALL) {
1185 switch (tc->cls_mall->command) {
1186 case TC_CLSMATCHALL_REPLACE:
1187 return mlxsw_sp_port_add_cls_matchall(mlxsw_sp_port,
1188 proto,
1189 tc->cls_mall,
1190 ingress);
1191 case TC_CLSMATCHALL_DESTROY:
1192 mlxsw_sp_port_del_cls_matchall(mlxsw_sp_port,
1193 tc->cls_mall);
1194 return 0;
1195 default:
1196 return -EINVAL;
1197 }
1198 }
1199
1200 return -ENOTSUPP;
1201 }
1202
1203 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
1204 .ndo_open = mlxsw_sp_port_open,
1205 .ndo_stop = mlxsw_sp_port_stop,
1206 .ndo_start_xmit = mlxsw_sp_port_xmit,
1207 .ndo_setup_tc = mlxsw_sp_setup_tc,
1208 .ndo_set_rx_mode = mlxsw_sp_set_rx_mode,
1209 .ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
1210 .ndo_change_mtu = mlxsw_sp_port_change_mtu,
1211 .ndo_get_stats64 = mlxsw_sp_port_get_stats64,
1212 .ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
1213 .ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
1214 .ndo_neigh_construct = mlxsw_sp_router_neigh_construct,
1215 .ndo_neigh_destroy = mlxsw_sp_router_neigh_destroy,
1216 .ndo_fdb_add = switchdev_port_fdb_add,
1217 .ndo_fdb_del = switchdev_port_fdb_del,
1218 .ndo_fdb_dump = switchdev_port_fdb_dump,
1219 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
1220 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
1221 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
1222 .ndo_get_phys_port_name = mlxsw_sp_port_get_phys_port_name,
1223 };
1224
1225 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
1226 struct ethtool_drvinfo *drvinfo)
1227 {
1228 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1229 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1230
1231 strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
1232 strlcpy(drvinfo->version, mlxsw_sp_driver_version,
1233 sizeof(drvinfo->version));
1234 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
1235 "%d.%d.%d",
1236 mlxsw_sp->bus_info->fw_rev.major,
1237 mlxsw_sp->bus_info->fw_rev.minor,
1238 mlxsw_sp->bus_info->fw_rev.subminor);
1239 strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
1240 sizeof(drvinfo->bus_info));
1241 }
1242
1243 static void mlxsw_sp_port_get_pauseparam(struct net_device *dev,
1244 struct ethtool_pauseparam *pause)
1245 {
1246 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1247
1248 pause->rx_pause = mlxsw_sp_port->link.rx_pause;
1249 pause->tx_pause = mlxsw_sp_port->link.tx_pause;
1250 }
1251
1252 static int mlxsw_sp_port_pause_set(struct mlxsw_sp_port *mlxsw_sp_port,
1253 struct ethtool_pauseparam *pause)
1254 {
1255 char pfcc_pl[MLXSW_REG_PFCC_LEN];
1256
1257 mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
1258 mlxsw_reg_pfcc_pprx_set(pfcc_pl, pause->rx_pause);
1259 mlxsw_reg_pfcc_pptx_set(pfcc_pl, pause->tx_pause);
1260
1261 return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
1262 pfcc_pl);
1263 }
1264
1265 static int mlxsw_sp_port_set_pauseparam(struct net_device *dev,
1266 struct ethtool_pauseparam *pause)
1267 {
1268 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1269 bool pause_en = pause->tx_pause || pause->rx_pause;
1270 int err;
1271
1272 if (mlxsw_sp_port->dcb.pfc && mlxsw_sp_port->dcb.pfc->pfc_en) {
1273 netdev_err(dev, "PFC already enabled on port\n");
1274 return -EINVAL;
1275 }
1276
1277 if (pause->autoneg) {
1278 netdev_err(dev, "PAUSE frames autonegotiation isn't supported\n");
1279 return -EINVAL;
1280 }
1281
1282 err = mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1283 if (err) {
1284 netdev_err(dev, "Failed to configure port's headroom\n");
1285 return err;
1286 }
1287
1288 err = mlxsw_sp_port_pause_set(mlxsw_sp_port, pause);
1289 if (err) {
1290 netdev_err(dev, "Failed to set PAUSE parameters\n");
1291 goto err_port_pause_configure;
1292 }
1293
1294 mlxsw_sp_port->link.rx_pause = pause->rx_pause;
1295 mlxsw_sp_port->link.tx_pause = pause->tx_pause;
1296
1297 return 0;
1298
1299 err_port_pause_configure:
1300 pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
1301 mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu, pause_en);
1302 return err;
1303 }
1304
1305 struct mlxsw_sp_port_hw_stats {
1306 char str[ETH_GSTRING_LEN];
1307 u64 (*getter)(char *payload);
1308 };
1309
1310 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
1311 {
1312 .str = "a_frames_transmitted_ok",
1313 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
1314 },
1315 {
1316 .str = "a_frames_received_ok",
1317 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
1318 },
1319 {
1320 .str = "a_frame_check_sequence_errors",
1321 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
1322 },
1323 {
1324 .str = "a_alignment_errors",
1325 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
1326 },
1327 {
1328 .str = "a_octets_transmitted_ok",
1329 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
1330 },
1331 {
1332 .str = "a_octets_received_ok",
1333 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
1334 },
1335 {
1336 .str = "a_multicast_frames_xmitted_ok",
1337 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
1338 },
1339 {
1340 .str = "a_broadcast_frames_xmitted_ok",
1341 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
1342 },
1343 {
1344 .str = "a_multicast_frames_received_ok",
1345 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
1346 },
1347 {
1348 .str = "a_broadcast_frames_received_ok",
1349 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
1350 },
1351 {
1352 .str = "a_in_range_length_errors",
1353 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
1354 },
1355 {
1356 .str = "a_out_of_range_length_field",
1357 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
1358 },
1359 {
1360 .str = "a_frame_too_long_errors",
1361 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
1362 },
1363 {
1364 .str = "a_symbol_error_during_carrier",
1365 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
1366 },
1367 {
1368 .str = "a_mac_control_frames_transmitted",
1369 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
1370 },
1371 {
1372 .str = "a_mac_control_frames_received",
1373 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
1374 },
1375 {
1376 .str = "a_unsupported_opcodes_received",
1377 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
1378 },
1379 {
1380 .str = "a_pause_mac_ctrl_frames_received",
1381 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
1382 },
1383 {
1384 .str = "a_pause_mac_ctrl_frames_xmitted",
1385 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
1386 },
1387 };
1388
1389 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
1390
1391 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_prio_stats[] = {
1392 {
1393 .str = "rx_octets_prio",
1394 .getter = mlxsw_reg_ppcnt_rx_octets_get,
1395 },
1396 {
1397 .str = "rx_frames_prio",
1398 .getter = mlxsw_reg_ppcnt_rx_frames_get,
1399 },
1400 {
1401 .str = "tx_octets_prio",
1402 .getter = mlxsw_reg_ppcnt_tx_octets_get,
1403 },
1404 {
1405 .str = "tx_frames_prio",
1406 .getter = mlxsw_reg_ppcnt_tx_frames_get,
1407 },
1408 {
1409 .str = "rx_pause_prio",
1410 .getter = mlxsw_reg_ppcnt_rx_pause_get,
1411 },
1412 {
1413 .str = "rx_pause_duration_prio",
1414 .getter = mlxsw_reg_ppcnt_rx_pause_duration_get,
1415 },
1416 {
1417 .str = "tx_pause_prio",
1418 .getter = mlxsw_reg_ppcnt_tx_pause_get,
1419 },
1420 {
1421 .str = "tx_pause_duration_prio",
1422 .getter = mlxsw_reg_ppcnt_tx_pause_duration_get,
1423 },
1424 };
1425
1426 #define MLXSW_SP_PORT_HW_PRIO_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_prio_stats)
1427
1428 static u64 mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get(char *ppcnt_pl)
1429 {
1430 u64 transmit_queue = mlxsw_reg_ppcnt_tc_transmit_queue_get(ppcnt_pl);
1431
1432 return MLXSW_SP_CELLS_TO_BYTES(transmit_queue);
1433 }
1434
1435 static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
1436 {
1437 .str = "tc_transmit_queue_tc",
1438 .getter = mlxsw_reg_ppcnt_tc_transmit_queue_bytes_get,
1439 },
1440 {
1441 .str = "tc_no_buffer_discard_uc_tc",
1442 .getter = mlxsw_reg_ppcnt_tc_no_buffer_discard_uc_get,
1443 },
1444 };
1445
1446 #define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)
1447
1448 #define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
1449 (MLXSW_SP_PORT_HW_PRIO_STATS_LEN + \
1450 MLXSW_SP_PORT_HW_TC_STATS_LEN) * \
1451 IEEE_8021QAZ_MAX_TCS)
1452
1453 static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
1454 {
1455 int i;
1456
1457 for (i = 0; i < MLXSW_SP_PORT_HW_PRIO_STATS_LEN; i++) {
1458 snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
1459 mlxsw_sp_port_hw_prio_stats[i].str, prio);
1460 *p += ETH_GSTRING_LEN;
1461 }
1462 }
1463
1464 static void mlxsw_sp_port_get_tc_strings(u8 **p, int tc)
1465 {
1466 int i;
1467
1468 for (i = 0; i < MLXSW_SP_PORT_HW_TC_STATS_LEN; i++) {
1469 snprintf(*p, ETH_GSTRING_LEN, "%s_%d",
1470 mlxsw_sp_port_hw_tc_stats[i].str, tc);
1471 *p += ETH_GSTRING_LEN;
1472 }
1473 }
1474
1475 static void mlxsw_sp_port_get_strings(struct net_device *dev,
1476 u32 stringset, u8 *data)
1477 {
1478 u8 *p = data;
1479 int i;
1480
1481 switch (stringset) {
1482 case ETH_SS_STATS:
1483 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
1484 memcpy(p, mlxsw_sp_port_hw_stats[i].str,
1485 ETH_GSTRING_LEN);
1486 p += ETH_GSTRING_LEN;
1487 }
1488
1489 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1490 mlxsw_sp_port_get_prio_strings(&p, i);
1491
1492 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
1493 mlxsw_sp_port_get_tc_strings(&p, i);
1494
1495 break;
1496 }
1497 }
1498
1499 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
1500 enum ethtool_phys_id_state state)
1501 {
1502 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1503 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1504 char mlcr_pl[MLXSW_REG_MLCR_LEN];
1505 bool active;
1506
1507 switch (state) {
1508 case ETHTOOL_ID_ACTIVE:
1509 active = true;
1510 break;
1511 case ETHTOOL_ID_INACTIVE:
1512 active = false;
1513 break;
1514 default:
1515 return -EOPNOTSUPP;
1516 }
1517
1518 mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
1519 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
1520 }
1521
1522 static int
1523 mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
1524 int *p_len, enum mlxsw_reg_ppcnt_grp grp)
1525 {
1526 switch (grp) {
1527 case MLXSW_REG_PPCNT_IEEE_8023_CNT:
1528 *p_hw_stats = mlxsw_sp_port_hw_stats;
1529 *p_len = MLXSW_SP_PORT_HW_STATS_LEN;
1530 break;
1531 case MLXSW_REG_PPCNT_PRIO_CNT:
1532 *p_hw_stats = mlxsw_sp_port_hw_prio_stats;
1533 *p_len = MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1534 break;
1535 case MLXSW_REG_PPCNT_TC_CNT:
1536 *p_hw_stats = mlxsw_sp_port_hw_tc_stats;
1537 *p_len = MLXSW_SP_PORT_HW_TC_STATS_LEN;
1538 break;
1539 default:
1540 WARN_ON(1);
1541 return -ENOTSUPP;
1542 }
1543 return 0;
1544 }
1545
1546 static void __mlxsw_sp_port_get_stats(struct net_device *dev,
1547 enum mlxsw_reg_ppcnt_grp grp, int prio,
1548 u64 *data, int data_index)
1549 {
1550 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1551 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1552 struct mlxsw_sp_port_hw_stats *hw_stats;
1553 char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1554 int i, len;
1555 int err;
1556
1557 err = mlxsw_sp_get_hw_stats_by_group(&hw_stats, &len, grp);
1558 if (err)
1559 return;
1560 mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port, grp, prio);
1561 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1562 for (i = 0; i < len; i++)
1563 data[data_index + i] = !err ? hw_stats[i].getter(ppcnt_pl) : 0;
1564 }
1565
1566 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1567 struct ethtool_stats *stats, u64 *data)
1568 {
1569 int i, data_index = 0;
1570
1571 /* IEEE 802.3 Counters */
1572 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_IEEE_8023_CNT, 0,
1573 data, data_index);
1574 data_index = MLXSW_SP_PORT_HW_STATS_LEN;
1575
1576 /* Per-Priority Counters */
1577 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1578 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_PRIO_CNT, i,
1579 data, data_index);
1580 data_index += MLXSW_SP_PORT_HW_PRIO_STATS_LEN;
1581 }
1582
1583 /* Per-TC Counters */
1584 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
1585 __mlxsw_sp_port_get_stats(dev, MLXSW_REG_PPCNT_TC_CNT, i,
1586 data, data_index);
1587 data_index += MLXSW_SP_PORT_HW_TC_STATS_LEN;
1588 }
1589 }
1590
1591 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1592 {
1593 switch (sset) {
1594 case ETH_SS_STATS:
1595 return MLXSW_SP_PORT_ETHTOOL_STATS_LEN;
1596 default:
1597 return -EOPNOTSUPP;
1598 }
1599 }
1600
1601 struct mlxsw_sp_port_link_mode {
1602 u32 mask;
1603 u32 supported;
1604 u32 advertised;
1605 u32 speed;
1606 };
1607
1608 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1609 {
1610 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1611 .supported = SUPPORTED_100baseT_Full,
1612 .advertised = ADVERTISED_100baseT_Full,
1613 .speed = 100,
1614 },
1615 {
1616 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1617 .speed = 100,
1618 },
1619 {
1620 .mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1621 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1622 .supported = SUPPORTED_1000baseKX_Full,
1623 .advertised = ADVERTISED_1000baseKX_Full,
1624 .speed = 1000,
1625 },
1626 {
1627 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1628 .supported = SUPPORTED_10000baseT_Full,
1629 .advertised = ADVERTISED_10000baseT_Full,
1630 .speed = 10000,
1631 },
1632 {
1633 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1634 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1635 .supported = SUPPORTED_10000baseKX4_Full,
1636 .advertised = ADVERTISED_10000baseKX4_Full,
1637 .speed = 10000,
1638 },
1639 {
1640 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1641 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1642 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1643 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1644 .supported = SUPPORTED_10000baseKR_Full,
1645 .advertised = ADVERTISED_10000baseKR_Full,
1646 .speed = 10000,
1647 },
1648 {
1649 .mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1650 .supported = SUPPORTED_20000baseKR2_Full,
1651 .advertised = ADVERTISED_20000baseKR2_Full,
1652 .speed = 20000,
1653 },
1654 {
1655 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1656 .supported = SUPPORTED_40000baseCR4_Full,
1657 .advertised = ADVERTISED_40000baseCR4_Full,
1658 .speed = 40000,
1659 },
1660 {
1661 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1662 .supported = SUPPORTED_40000baseKR4_Full,
1663 .advertised = ADVERTISED_40000baseKR4_Full,
1664 .speed = 40000,
1665 },
1666 {
1667 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1668 .supported = SUPPORTED_40000baseSR4_Full,
1669 .advertised = ADVERTISED_40000baseSR4_Full,
1670 .speed = 40000,
1671 },
1672 {
1673 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1674 .supported = SUPPORTED_40000baseLR4_Full,
1675 .advertised = ADVERTISED_40000baseLR4_Full,
1676 .speed = 40000,
1677 },
1678 {
1679 .mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1680 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1681 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1682 .speed = 25000,
1683 },
1684 {
1685 .mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1686 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1687 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1688 .speed = 50000,
1689 },
1690 {
1691 .mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1692 .supported = SUPPORTED_56000baseKR4_Full,
1693 .advertised = ADVERTISED_56000baseKR4_Full,
1694 .speed = 56000,
1695 },
1696 {
1697 .mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1698 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1699 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1700 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1701 .speed = 100000,
1702 },
1703 };
1704
1705 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1706
1707 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1708 {
1709 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1710 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1711 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1712 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1713 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1714 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1715 return SUPPORTED_FIBRE;
1716
1717 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1718 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1719 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1720 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1721 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1722 return SUPPORTED_Backplane;
1723 return 0;
1724 }
1725
1726 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1727 {
1728 u32 modes = 0;
1729 int i;
1730
1731 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1732 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1733 modes |= mlxsw_sp_port_link_mode[i].supported;
1734 }
1735 return modes;
1736 }
1737
1738 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1739 {
1740 u32 modes = 0;
1741 int i;
1742
1743 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1744 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1745 modes |= mlxsw_sp_port_link_mode[i].advertised;
1746 }
1747 return modes;
1748 }
1749
1750 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1751 struct ethtool_cmd *cmd)
1752 {
1753 u32 speed = SPEED_UNKNOWN;
1754 u8 duplex = DUPLEX_UNKNOWN;
1755 int i;
1756
1757 if (!carrier_ok)
1758 goto out;
1759
1760 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1761 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1762 speed = mlxsw_sp_port_link_mode[i].speed;
1763 duplex = DUPLEX_FULL;
1764 break;
1765 }
1766 }
1767 out:
1768 ethtool_cmd_speed_set(cmd, speed);
1769 cmd->duplex = duplex;
1770 }
1771
1772 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1773 {
1774 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1775 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1776 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1777 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1778 return PORT_FIBRE;
1779
1780 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1781 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1782 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1783 return PORT_DA;
1784
1785 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1786 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1787 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1788 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1789 return PORT_NONE;
1790
1791 return PORT_OTHER;
1792 }
1793
1794 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1795 struct ethtool_cmd *cmd)
1796 {
1797 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1798 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1799 char ptys_pl[MLXSW_REG_PTYS_LEN];
1800 u32 eth_proto_cap;
1801 u32 eth_proto_admin;
1802 u32 eth_proto_oper;
1803 int err;
1804
1805 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1806 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1807 if (err) {
1808 netdev_err(dev, "Failed to get proto");
1809 return err;
1810 }
1811 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1812 &eth_proto_admin, &eth_proto_oper);
1813
1814 cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1815 mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1816 SUPPORTED_Pause | SUPPORTED_Asym_Pause |
1817 SUPPORTED_Autoneg;
1818 cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1819 mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1820 eth_proto_oper, cmd);
1821
1822 eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1823 cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1824 cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1825
1826 cmd->transceiver = XCVR_INTERNAL;
1827 return 0;
1828 }
1829
1830 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1831 {
1832 u32 ptys_proto = 0;
1833 int i;
1834
1835 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1836 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1837 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1838 }
1839 return ptys_proto;
1840 }
1841
1842 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1843 {
1844 u32 ptys_proto = 0;
1845 int i;
1846
1847 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1848 if (speed == mlxsw_sp_port_link_mode[i].speed)
1849 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1850 }
1851 return ptys_proto;
1852 }
1853
1854 static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
1855 {
1856 u32 ptys_proto = 0;
1857 int i;
1858
1859 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1860 if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
1861 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1862 }
1863 return ptys_proto;
1864 }
1865
1866 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1867 struct ethtool_cmd *cmd)
1868 {
1869 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1870 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1871 char ptys_pl[MLXSW_REG_PTYS_LEN];
1872 u32 speed;
1873 u32 eth_proto_new;
1874 u32 eth_proto_cap;
1875 u32 eth_proto_admin;
1876 int err;
1877
1878 speed = ethtool_cmd_speed(cmd);
1879
1880 eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1881 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1882 mlxsw_sp_to_ptys_speed(speed);
1883
1884 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1885 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1886 if (err) {
1887 netdev_err(dev, "Failed to get proto");
1888 return err;
1889 }
1890 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1891
1892 eth_proto_new = eth_proto_new & eth_proto_cap;
1893 if (!eth_proto_new) {
1894 netdev_err(dev, "Not supported proto admin requested");
1895 return -EINVAL;
1896 }
1897 if (eth_proto_new == eth_proto_admin)
1898 return 0;
1899
1900 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1901 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1902 if (err) {
1903 netdev_err(dev, "Failed to set proto admin");
1904 return err;
1905 }
1906
1907 if (!netif_running(dev))
1908 return 0;
1909
1910 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1911 if (err) {
1912 netdev_err(dev, "Failed to set admin status");
1913 return err;
1914 }
1915
1916 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1917 if (err) {
1918 netdev_err(dev, "Failed to set admin status");
1919 return err;
1920 }
1921
1922 return 0;
1923 }
1924
1925 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1926 .get_drvinfo = mlxsw_sp_port_get_drvinfo,
1927 .get_link = ethtool_op_get_link,
1928 .get_pauseparam = mlxsw_sp_port_get_pauseparam,
1929 .set_pauseparam = mlxsw_sp_port_set_pauseparam,
1930 .get_strings = mlxsw_sp_port_get_strings,
1931 .set_phys_id = mlxsw_sp_port_set_phys_id,
1932 .get_ethtool_stats = mlxsw_sp_port_get_stats,
1933 .get_sset_count = mlxsw_sp_port_get_sset_count,
1934 .get_settings = mlxsw_sp_port_get_settings,
1935 .set_settings = mlxsw_sp_port_set_settings,
1936 };
1937
1938 static int
1939 mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
1940 {
1941 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1942 u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
1943 char ptys_pl[MLXSW_REG_PTYS_LEN];
1944 u32 eth_proto_admin;
1945
1946 eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
1947 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
1948 eth_proto_admin);
1949 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1950 }
1951
1952 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
1953 enum mlxsw_reg_qeec_hr hr, u8 index, u8 next_index,
1954 bool dwrr, u8 dwrr_weight)
1955 {
1956 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1957 char qeec_pl[MLXSW_REG_QEEC_LEN];
1958
1959 mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
1960 next_index);
1961 mlxsw_reg_qeec_de_set(qeec_pl, true);
1962 mlxsw_reg_qeec_dwrr_set(qeec_pl, dwrr);
1963 mlxsw_reg_qeec_dwrr_weight_set(qeec_pl, dwrr_weight);
1964 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
1965 }
1966
1967 int mlxsw_sp_port_ets_maxrate_set(struct mlxsw_sp_port *mlxsw_sp_port,
1968 enum mlxsw_reg_qeec_hr hr, u8 index,
1969 u8 next_index, u32 maxrate)
1970 {
1971 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1972 char qeec_pl[MLXSW_REG_QEEC_LEN];
1973
1974 mlxsw_reg_qeec_pack(qeec_pl, mlxsw_sp_port->local_port, hr, index,
1975 next_index);
1976 mlxsw_reg_qeec_mase_set(qeec_pl, true);
1977 mlxsw_reg_qeec_max_shaper_rate_set(qeec_pl, maxrate);
1978 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qeec), qeec_pl);
1979 }
1980
1981 int mlxsw_sp_port_prio_tc_set(struct mlxsw_sp_port *mlxsw_sp_port,
1982 u8 switch_prio, u8 tclass)
1983 {
1984 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1985 char qtct_pl[MLXSW_REG_QTCT_LEN];
1986
1987 mlxsw_reg_qtct_pack(qtct_pl, mlxsw_sp_port->local_port, switch_prio,
1988 tclass);
1989 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtct), qtct_pl);
1990 }
1991
1992 static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
1993 {
1994 int err, i;
1995
1996 /* Setup the elements hierarcy, so that each TC is linked to
1997 * one subgroup, which are all member in the same group.
1998 */
1999 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2000 MLXSW_REG_QEEC_HIERARCY_GROUP, 0, 0, false,
2001 0);
2002 if (err)
2003 return err;
2004 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2005 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2006 MLXSW_REG_QEEC_HIERARCY_SUBGROUP, i,
2007 0, false, 0);
2008 if (err)
2009 return err;
2010 }
2011 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2012 err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
2013 MLXSW_REG_QEEC_HIERARCY_TC, i, i,
2014 false, 0);
2015 if (err)
2016 return err;
2017 }
2018
2019 /* Make sure the max shaper is disabled in all hierarcies that
2020 * support it.
2021 */
2022 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2023 MLXSW_REG_QEEC_HIERARCY_PORT, 0, 0,
2024 MLXSW_REG_QEEC_MAS_DIS);
2025 if (err)
2026 return err;
2027 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2028 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2029 MLXSW_REG_QEEC_HIERARCY_SUBGROUP,
2030 i, 0,
2031 MLXSW_REG_QEEC_MAS_DIS);
2032 if (err)
2033 return err;
2034 }
2035 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2036 err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
2037 MLXSW_REG_QEEC_HIERARCY_TC,
2038 i, i,
2039 MLXSW_REG_QEEC_MAS_DIS);
2040 if (err)
2041 return err;
2042 }
2043
2044 /* Map all priorities to traffic class 0. */
2045 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
2046 err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, 0);
2047 if (err)
2048 return err;
2049 }
2050
2051 return 0;
2052 }
2053
2054 static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
2055 {
2056 mlxsw_sp_port->pvid = 1;
2057
2058 return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
2059 }
2060
2061 static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
2062 {
2063 return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
2064 }
2065
2066 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
2067 bool split, u8 module, u8 width, u8 lane)
2068 {
2069 struct mlxsw_sp_port *mlxsw_sp_port;
2070 struct net_device *dev;
2071 size_t bytes;
2072 int err;
2073
2074 dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
2075 if (!dev)
2076 return -ENOMEM;
2077 mlxsw_sp_port = netdev_priv(dev);
2078 mlxsw_sp_port->dev = dev;
2079 mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
2080 mlxsw_sp_port->local_port = local_port;
2081 mlxsw_sp_port->split = split;
2082 mlxsw_sp_port->mapping.module = module;
2083 mlxsw_sp_port->mapping.width = width;
2084 mlxsw_sp_port->mapping.lane = lane;
2085 bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
2086 mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
2087 if (!mlxsw_sp_port->active_vlans) {
2088 err = -ENOMEM;
2089 goto err_port_active_vlans_alloc;
2090 }
2091 mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
2092 if (!mlxsw_sp_port->untagged_vlans) {
2093 err = -ENOMEM;
2094 goto err_port_untagged_vlans_alloc;
2095 }
2096 INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
2097 INIT_LIST_HEAD(&mlxsw_sp_port->mall_tc_list);
2098
2099 mlxsw_sp_port->pcpu_stats =
2100 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
2101 if (!mlxsw_sp_port->pcpu_stats) {
2102 err = -ENOMEM;
2103 goto err_alloc_stats;
2104 }
2105
2106 dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
2107 dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
2108
2109 err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
2110 if (err) {
2111 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
2112 mlxsw_sp_port->local_port);
2113 goto err_port_swid_set;
2114 }
2115
2116 err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
2117 if (err) {
2118 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
2119 mlxsw_sp_port->local_port);
2120 goto err_dev_addr_init;
2121 }
2122
2123 netif_carrier_off(dev);
2124
2125 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
2126 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
2127 dev->hw_features |= NETIF_F_HW_TC;
2128
2129 /* Each packet needs to have a Tx header (metadata) on top all other
2130 * headers.
2131 */
2132 dev->hard_header_len += MLXSW_TXHDR_LEN;
2133
2134 err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
2135 if (err) {
2136 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
2137 mlxsw_sp_port->local_port);
2138 goto err_port_system_port_mapping_set;
2139 }
2140
2141 err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
2142 if (err) {
2143 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
2144 mlxsw_sp_port->local_port);
2145 goto err_port_speed_by_width_set;
2146 }
2147
2148 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
2149 if (err) {
2150 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
2151 mlxsw_sp_port->local_port);
2152 goto err_port_mtu_set;
2153 }
2154
2155 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
2156 if (err)
2157 goto err_port_admin_status_set;
2158
2159 err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
2160 if (err) {
2161 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
2162 mlxsw_sp_port->local_port);
2163 goto err_port_buffers_init;
2164 }
2165
2166 err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
2167 if (err) {
2168 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize ETS\n",
2169 mlxsw_sp_port->local_port);
2170 goto err_port_ets_init;
2171 }
2172
2173 /* ETS and buffers must be initialized before DCB. */
2174 err = mlxsw_sp_port_dcb_init(mlxsw_sp_port);
2175 if (err) {
2176 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize DCB\n",
2177 mlxsw_sp_port->local_port);
2178 goto err_port_dcb_init;
2179 }
2180
2181 err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
2182 if (err) {
2183 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
2184 mlxsw_sp_port->local_port);
2185 goto err_port_pvid_vport_create;
2186 }
2187
2188 mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
2189 mlxsw_sp->ports[local_port] = mlxsw_sp_port;
2190 err = register_netdev(dev);
2191 if (err) {
2192 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
2193 mlxsw_sp_port->local_port);
2194 goto err_register_netdev;
2195 }
2196
2197 err = mlxsw_core_port_init(mlxsw_sp->core, &mlxsw_sp_port->core_port,
2198 mlxsw_sp_port->local_port, dev,
2199 mlxsw_sp_port->split, module);
2200 if (err) {
2201 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to init core port\n",
2202 mlxsw_sp_port->local_port);
2203 goto err_core_port_init;
2204 }
2205
2206 return 0;
2207
2208 err_core_port_init:
2209 unregister_netdev(dev);
2210 err_register_netdev:
2211 mlxsw_sp->ports[local_port] = NULL;
2212 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2213 mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2214 err_port_pvid_vport_create:
2215 mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2216 err_port_dcb_init:
2217 err_port_ets_init:
2218 err_port_buffers_init:
2219 err_port_admin_status_set:
2220 err_port_mtu_set:
2221 err_port_speed_by_width_set:
2222 err_port_system_port_mapping_set:
2223 err_dev_addr_init:
2224 mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2225 err_port_swid_set:
2226 free_percpu(mlxsw_sp_port->pcpu_stats);
2227 err_alloc_stats:
2228 kfree(mlxsw_sp_port->untagged_vlans);
2229 err_port_untagged_vlans_alloc:
2230 kfree(mlxsw_sp_port->active_vlans);
2231 err_port_active_vlans_alloc:
2232 free_netdev(dev);
2233 return err;
2234 }
2235
2236 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
2237 {
2238 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2239
2240 if (!mlxsw_sp_port)
2241 return;
2242 mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
2243 unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
2244 mlxsw_sp->ports[local_port] = NULL;
2245 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
2246 mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
2247 mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
2248 mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
2249 mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
2250 free_percpu(mlxsw_sp_port->pcpu_stats);
2251 kfree(mlxsw_sp_port->untagged_vlans);
2252 kfree(mlxsw_sp_port->active_vlans);
2253 WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
2254 free_netdev(mlxsw_sp_port->dev);
2255 }
2256
2257 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
2258 {
2259 int i;
2260
2261 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
2262 mlxsw_sp_port_remove(mlxsw_sp, i);
2263 kfree(mlxsw_sp->ports);
2264 }
2265
2266 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
2267 {
2268 u8 module, width, lane;
2269 size_t alloc_size;
2270 int i;
2271 int err;
2272
2273 alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
2274 mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
2275 if (!mlxsw_sp->ports)
2276 return -ENOMEM;
2277
2278 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
2279 err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
2280 &width, &lane);
2281 if (err)
2282 goto err_port_module_info_get;
2283 if (!width)
2284 continue;
2285 mlxsw_sp->port_to_module[i] = module;
2286 err = mlxsw_sp_port_create(mlxsw_sp, i, false, module, width,
2287 lane);
2288 if (err)
2289 goto err_port_create;
2290 }
2291 return 0;
2292
2293 err_port_create:
2294 err_port_module_info_get:
2295 for (i--; i >= 1; i--)
2296 mlxsw_sp_port_remove(mlxsw_sp, i);
2297 kfree(mlxsw_sp->ports);
2298 return err;
2299 }
2300
2301 static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
2302 {
2303 u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
2304
2305 return local_port - offset;
2306 }
2307
2308 static int mlxsw_sp_port_split_create(struct mlxsw_sp *mlxsw_sp, u8 base_port,
2309 u8 module, unsigned int count)
2310 {
2311 u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
2312 int err, i;
2313
2314 for (i = 0; i < count; i++) {
2315 err = mlxsw_sp_port_module_map(mlxsw_sp, base_port + i, module,
2316 width, i * width);
2317 if (err)
2318 goto err_port_module_map;
2319 }
2320
2321 for (i = 0; i < count; i++) {
2322 err = __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i, 0);
2323 if (err)
2324 goto err_port_swid_set;
2325 }
2326
2327 for (i = 0; i < count; i++) {
2328 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
2329 module, width, i * width);
2330 if (err)
2331 goto err_port_create;
2332 }
2333
2334 return 0;
2335
2336 err_port_create:
2337 for (i--; i >= 0; i--)
2338 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2339 i = count;
2340 err_port_swid_set:
2341 for (i--; i >= 0; i--)
2342 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i,
2343 MLXSW_PORT_SWID_DISABLED_PORT);
2344 i = count;
2345 err_port_module_map:
2346 for (i--; i >= 0; i--)
2347 mlxsw_sp_port_module_unmap(mlxsw_sp, base_port + i);
2348 return err;
2349 }
2350
2351 static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
2352 u8 base_port, unsigned int count)
2353 {
2354 u8 local_port, module, width = MLXSW_PORT_MODULE_MAX_WIDTH;
2355 int i;
2356
2357 /* Split by four means we need to re-create two ports, otherwise
2358 * only one.
2359 */
2360 count = count / 2;
2361
2362 for (i = 0; i < count; i++) {
2363 local_port = base_port + i * 2;
2364 module = mlxsw_sp->port_to_module[local_port];
2365
2366 mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
2367 0);
2368 }
2369
2370 for (i = 0; i < count; i++)
2371 __mlxsw_sp_port_swid_set(mlxsw_sp, base_port + i * 2, 0);
2372
2373 for (i = 0; i < count; i++) {
2374 local_port = base_port + i * 2;
2375 module = mlxsw_sp->port_to_module[local_port];
2376
2377 mlxsw_sp_port_create(mlxsw_sp, local_port, false, module,
2378 width, 0);
2379 }
2380 }
2381
2382 static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
2383 unsigned int count)
2384 {
2385 struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2386 struct mlxsw_sp_port *mlxsw_sp_port;
2387 u8 module, cur_width, base_port;
2388 int i;
2389 int err;
2390
2391 mlxsw_sp_port = mlxsw_sp->ports[local_port];
2392 if (!mlxsw_sp_port) {
2393 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2394 local_port);
2395 return -EINVAL;
2396 }
2397
2398 module = mlxsw_sp_port->mapping.module;
2399 cur_width = mlxsw_sp_port->mapping.width;
2400
2401 if (count != 2 && count != 4) {
2402 netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
2403 return -EINVAL;
2404 }
2405
2406 if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
2407 netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
2408 return -EINVAL;
2409 }
2410
2411 /* Make sure we have enough slave (even) ports for the split. */
2412 if (count == 2) {
2413 base_port = local_port;
2414 if (mlxsw_sp->ports[base_port + 1]) {
2415 netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2416 return -EINVAL;
2417 }
2418 } else {
2419 base_port = mlxsw_sp_cluster_base_port_get(local_port);
2420 if (mlxsw_sp->ports[base_port + 1] ||
2421 mlxsw_sp->ports[base_port + 3]) {
2422 netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
2423 return -EINVAL;
2424 }
2425 }
2426
2427 for (i = 0; i < count; i++)
2428 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2429
2430 err = mlxsw_sp_port_split_create(mlxsw_sp, base_port, module, count);
2431 if (err) {
2432 dev_err(mlxsw_sp->bus_info->dev, "Failed to create split ports\n");
2433 goto err_port_split_create;
2434 }
2435
2436 return 0;
2437
2438 err_port_split_create:
2439 mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2440 return err;
2441 }
2442
2443 static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
2444 {
2445 struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2446 struct mlxsw_sp_port *mlxsw_sp_port;
2447 u8 cur_width, base_port;
2448 unsigned int count;
2449 int i;
2450
2451 mlxsw_sp_port = mlxsw_sp->ports[local_port];
2452 if (!mlxsw_sp_port) {
2453 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
2454 local_port);
2455 return -EINVAL;
2456 }
2457
2458 if (!mlxsw_sp_port->split) {
2459 netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
2460 return -EINVAL;
2461 }
2462
2463 cur_width = mlxsw_sp_port->mapping.width;
2464 count = cur_width == 1 ? 4 : 2;
2465
2466 base_port = mlxsw_sp_cluster_base_port_get(local_port);
2467
2468 /* Determine which ports to remove. */
2469 if (count == 2 && local_port >= base_port + 2)
2470 base_port = base_port + 2;
2471
2472 for (i = 0; i < count; i++)
2473 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
2474
2475 mlxsw_sp_port_unsplit_create(mlxsw_sp, base_port, count);
2476
2477 return 0;
2478 }
2479
2480 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
2481 char *pude_pl, void *priv)
2482 {
2483 struct mlxsw_sp *mlxsw_sp = priv;
2484 struct mlxsw_sp_port *mlxsw_sp_port;
2485 enum mlxsw_reg_pude_oper_status status;
2486 u8 local_port;
2487
2488 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
2489 mlxsw_sp_port = mlxsw_sp->ports[local_port];
2490 if (!mlxsw_sp_port)
2491 return;
2492
2493 status = mlxsw_reg_pude_oper_status_get(pude_pl);
2494 if (status == MLXSW_PORT_OPER_STATUS_UP) {
2495 netdev_info(mlxsw_sp_port->dev, "link up\n");
2496 netif_carrier_on(mlxsw_sp_port->dev);
2497 } else {
2498 netdev_info(mlxsw_sp_port->dev, "link down\n");
2499 netif_carrier_off(mlxsw_sp_port->dev);
2500 }
2501 }
2502
2503 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
2504 .func = mlxsw_sp_pude_event_func,
2505 .trap_id = MLXSW_TRAP_ID_PUDE,
2506 };
2507
2508 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
2509 enum mlxsw_event_trap_id trap_id)
2510 {
2511 struct mlxsw_event_listener *el;
2512 char hpkt_pl[MLXSW_REG_HPKT_LEN];
2513 int err;
2514
2515 switch (trap_id) {
2516 case MLXSW_TRAP_ID_PUDE:
2517 el = &mlxsw_sp_pude_event;
2518 break;
2519 }
2520 err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
2521 if (err)
2522 return err;
2523
2524 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
2525 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2526 if (err)
2527 goto err_event_trap_set;
2528
2529 return 0;
2530
2531 err_event_trap_set:
2532 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2533 return err;
2534 }
2535
2536 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
2537 enum mlxsw_event_trap_id trap_id)
2538 {
2539 struct mlxsw_event_listener *el;
2540
2541 switch (trap_id) {
2542 case MLXSW_TRAP_ID_PUDE:
2543 el = &mlxsw_sp_pude_event;
2544 break;
2545 }
2546 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
2547 }
2548
2549 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
2550 void *priv)
2551 {
2552 struct mlxsw_sp *mlxsw_sp = priv;
2553 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
2554 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
2555
2556 if (unlikely(!mlxsw_sp_port)) {
2557 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
2558 local_port);
2559 return;
2560 }
2561
2562 skb->dev = mlxsw_sp_port->dev;
2563
2564 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
2565 u64_stats_update_begin(&pcpu_stats->syncp);
2566 pcpu_stats->rx_packets++;
2567 pcpu_stats->rx_bytes += skb->len;
2568 u64_stats_update_end(&pcpu_stats->syncp);
2569
2570 skb->protocol = eth_type_trans(skb, skb->dev);
2571 netif_receive_skb(skb);
2572 }
2573
2574 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
2575 {
2576 .func = mlxsw_sp_rx_listener_func,
2577 .local_port = MLXSW_PORT_DONT_CARE,
2578 .trap_id = MLXSW_TRAP_ID_FDB_MC,
2579 },
2580 /* Traps for specific L2 packet types, not trapped as FDB MC */
2581 {
2582 .func = mlxsw_sp_rx_listener_func,
2583 .local_port = MLXSW_PORT_DONT_CARE,
2584 .trap_id = MLXSW_TRAP_ID_STP,
2585 },
2586 {
2587 .func = mlxsw_sp_rx_listener_func,
2588 .local_port = MLXSW_PORT_DONT_CARE,
2589 .trap_id = MLXSW_TRAP_ID_LACP,
2590 },
2591 {
2592 .func = mlxsw_sp_rx_listener_func,
2593 .local_port = MLXSW_PORT_DONT_CARE,
2594 .trap_id = MLXSW_TRAP_ID_EAPOL,
2595 },
2596 {
2597 .func = mlxsw_sp_rx_listener_func,
2598 .local_port = MLXSW_PORT_DONT_CARE,
2599 .trap_id = MLXSW_TRAP_ID_LLDP,
2600 },
2601 {
2602 .func = mlxsw_sp_rx_listener_func,
2603 .local_port = MLXSW_PORT_DONT_CARE,
2604 .trap_id = MLXSW_TRAP_ID_MMRP,
2605 },
2606 {
2607 .func = mlxsw_sp_rx_listener_func,
2608 .local_port = MLXSW_PORT_DONT_CARE,
2609 .trap_id = MLXSW_TRAP_ID_MVRP,
2610 },
2611 {
2612 .func = mlxsw_sp_rx_listener_func,
2613 .local_port = MLXSW_PORT_DONT_CARE,
2614 .trap_id = MLXSW_TRAP_ID_RPVST,
2615 },
2616 {
2617 .func = mlxsw_sp_rx_listener_func,
2618 .local_port = MLXSW_PORT_DONT_CARE,
2619 .trap_id = MLXSW_TRAP_ID_DHCP,
2620 },
2621 {
2622 .func = mlxsw_sp_rx_listener_func,
2623 .local_port = MLXSW_PORT_DONT_CARE,
2624 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
2625 },
2626 {
2627 .func = mlxsw_sp_rx_listener_func,
2628 .local_port = MLXSW_PORT_DONT_CARE,
2629 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
2630 },
2631 {
2632 .func = mlxsw_sp_rx_listener_func,
2633 .local_port = MLXSW_PORT_DONT_CARE,
2634 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
2635 },
2636 {
2637 .func = mlxsw_sp_rx_listener_func,
2638 .local_port = MLXSW_PORT_DONT_CARE,
2639 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
2640 },
2641 {
2642 .func = mlxsw_sp_rx_listener_func,
2643 .local_port = MLXSW_PORT_DONT_CARE,
2644 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
2645 },
2646 {
2647 .func = mlxsw_sp_rx_listener_func,
2648 .local_port = MLXSW_PORT_DONT_CARE,
2649 .trap_id = MLXSW_TRAP_ID_ARPBC,
2650 },
2651 {
2652 .func = mlxsw_sp_rx_listener_func,
2653 .local_port = MLXSW_PORT_DONT_CARE,
2654 .trap_id = MLXSW_TRAP_ID_ARPUC,
2655 },
2656 {
2657 .func = mlxsw_sp_rx_listener_func,
2658 .local_port = MLXSW_PORT_DONT_CARE,
2659 .trap_id = MLXSW_TRAP_ID_MTUERROR,
2660 },
2661 {
2662 .func = mlxsw_sp_rx_listener_func,
2663 .local_port = MLXSW_PORT_DONT_CARE,
2664 .trap_id = MLXSW_TRAP_ID_TTLERROR,
2665 },
2666 {
2667 .func = mlxsw_sp_rx_listener_func,
2668 .local_port = MLXSW_PORT_DONT_CARE,
2669 .trap_id = MLXSW_TRAP_ID_LBERROR,
2670 },
2671 {
2672 .func = mlxsw_sp_rx_listener_func,
2673 .local_port = MLXSW_PORT_DONT_CARE,
2674 .trap_id = MLXSW_TRAP_ID_OSPF,
2675 },
2676 {
2677 .func = mlxsw_sp_rx_listener_func,
2678 .local_port = MLXSW_PORT_DONT_CARE,
2679 .trap_id = MLXSW_TRAP_ID_IP2ME,
2680 },
2681 {
2682 .func = mlxsw_sp_rx_listener_func,
2683 .local_port = MLXSW_PORT_DONT_CARE,
2684 .trap_id = MLXSW_TRAP_ID_RTR_INGRESS0,
2685 },
2686 {
2687 .func = mlxsw_sp_rx_listener_func,
2688 .local_port = MLXSW_PORT_DONT_CARE,
2689 .trap_id = MLXSW_TRAP_ID_HOST_MISS_IPV4,
2690 },
2691 };
2692
2693 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
2694 {
2695 char htgt_pl[MLXSW_REG_HTGT_LEN];
2696 char hpkt_pl[MLXSW_REG_HPKT_LEN];
2697 int i;
2698 int err;
2699
2700 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
2701 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2702 if (err)
2703 return err;
2704
2705 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
2706 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
2707 if (err)
2708 return err;
2709
2710 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2711 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
2712 &mlxsw_sp_rx_listener[i],
2713 mlxsw_sp);
2714 if (err)
2715 goto err_rx_listener_register;
2716
2717 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
2718 mlxsw_sp_rx_listener[i].trap_id);
2719 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2720 if (err)
2721 goto err_rx_trap_set;
2722 }
2723 return 0;
2724
2725 err_rx_trap_set:
2726 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2727 &mlxsw_sp_rx_listener[i],
2728 mlxsw_sp);
2729 err_rx_listener_register:
2730 for (i--; i >= 0; i--) {
2731 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2732 mlxsw_sp_rx_listener[i].trap_id);
2733 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2734
2735 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2736 &mlxsw_sp_rx_listener[i],
2737 mlxsw_sp);
2738 }
2739 return err;
2740 }
2741
2742 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
2743 {
2744 char hpkt_pl[MLXSW_REG_HPKT_LEN];
2745 int i;
2746
2747 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2748 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_DISCARD,
2749 mlxsw_sp_rx_listener[i].trap_id);
2750 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2751
2752 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2753 &mlxsw_sp_rx_listener[i],
2754 mlxsw_sp);
2755 }
2756 }
2757
2758 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
2759 enum mlxsw_reg_sfgc_type type,
2760 enum mlxsw_reg_sfgc_bridge_type bridge_type)
2761 {
2762 enum mlxsw_flood_table_type table_type;
2763 enum mlxsw_sp_flood_table flood_table;
2764 char sfgc_pl[MLXSW_REG_SFGC_LEN];
2765
2766 if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2767 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2768 else
2769 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2770
2771 if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
2772 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
2773 else
2774 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2775
2776 mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
2777 flood_table);
2778 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
2779 }
2780
2781 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
2782 {
2783 int type, err;
2784
2785 for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
2786 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
2787 continue;
2788
2789 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2790 MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
2791 if (err)
2792 return err;
2793
2794 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2795 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
2796 if (err)
2797 return err;
2798 }
2799
2800 return 0;
2801 }
2802
2803 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
2804 {
2805 char slcr_pl[MLXSW_REG_SLCR_LEN];
2806
2807 mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
2808 MLXSW_REG_SLCR_LAG_HASH_DMAC |
2809 MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
2810 MLXSW_REG_SLCR_LAG_HASH_VLANID |
2811 MLXSW_REG_SLCR_LAG_HASH_SIP |
2812 MLXSW_REG_SLCR_LAG_HASH_DIP |
2813 MLXSW_REG_SLCR_LAG_HASH_SPORT |
2814 MLXSW_REG_SLCR_LAG_HASH_DPORT |
2815 MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2816 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
2817 }
2818
2819 static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
2820 const struct mlxsw_bus_info *mlxsw_bus_info)
2821 {
2822 struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2823 int err;
2824
2825 mlxsw_sp->core = mlxsw_core;
2826 mlxsw_sp->bus_info = mlxsw_bus_info;
2827 INIT_LIST_HEAD(&mlxsw_sp->fids);
2828 INIT_LIST_HEAD(&mlxsw_sp->vfids.list);
2829 INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2830
2831 err = mlxsw_sp_base_mac_get(mlxsw_sp);
2832 if (err) {
2833 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
2834 return err;
2835 }
2836
2837 err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2838 if (err) {
2839 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2840 return err;
2841 }
2842
2843 err = mlxsw_sp_traps_init(mlxsw_sp);
2844 if (err) {
2845 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
2846 goto err_rx_listener_register;
2847 }
2848
2849 err = mlxsw_sp_flood_init(mlxsw_sp);
2850 if (err) {
2851 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
2852 goto err_flood_init;
2853 }
2854
2855 err = mlxsw_sp_buffers_init(mlxsw_sp);
2856 if (err) {
2857 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
2858 goto err_buffers_init;
2859 }
2860
2861 err = mlxsw_sp_lag_init(mlxsw_sp);
2862 if (err) {
2863 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
2864 goto err_lag_init;
2865 }
2866
2867 err = mlxsw_sp_switchdev_init(mlxsw_sp);
2868 if (err) {
2869 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
2870 goto err_switchdev_init;
2871 }
2872
2873 err = mlxsw_sp_router_init(mlxsw_sp);
2874 if (err) {
2875 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize router\n");
2876 goto err_router_init;
2877 }
2878
2879 err = mlxsw_sp_span_init(mlxsw_sp);
2880 if (err) {
2881 dev_err(mlxsw_sp->bus_info->dev, "Failed to init span system\n");
2882 goto err_span_init;
2883 }
2884
2885 err = mlxsw_sp_ports_create(mlxsw_sp);
2886 if (err) {
2887 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
2888 goto err_ports_create;
2889 }
2890
2891 return 0;
2892
2893 err_ports_create:
2894 mlxsw_sp_span_fini(mlxsw_sp);
2895 err_span_init:
2896 mlxsw_sp_router_fini(mlxsw_sp);
2897 err_router_init:
2898 mlxsw_sp_switchdev_fini(mlxsw_sp);
2899 err_switchdev_init:
2900 err_lag_init:
2901 mlxsw_sp_buffers_fini(mlxsw_sp);
2902 err_buffers_init:
2903 err_flood_init:
2904 mlxsw_sp_traps_fini(mlxsw_sp);
2905 err_rx_listener_register:
2906 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2907 return err;
2908 }
2909
2910 static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
2911 {
2912 struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
2913 int i;
2914
2915 mlxsw_sp_ports_remove(mlxsw_sp);
2916 mlxsw_sp_span_fini(mlxsw_sp);
2917 mlxsw_sp_router_fini(mlxsw_sp);
2918 mlxsw_sp_switchdev_fini(mlxsw_sp);
2919 mlxsw_sp_buffers_fini(mlxsw_sp);
2920 mlxsw_sp_traps_fini(mlxsw_sp);
2921 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2922 WARN_ON(!list_empty(&mlxsw_sp->vfids.list));
2923 WARN_ON(!list_empty(&mlxsw_sp->fids));
2924 for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
2925 WARN_ON_ONCE(mlxsw_sp->rifs[i]);
2926 }
2927
2928 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
2929 .used_max_vepa_channels = 1,
2930 .max_vepa_channels = 0,
2931 .used_max_lag = 1,
2932 .max_lag = MLXSW_SP_LAG_MAX,
2933 .used_max_port_per_lag = 1,
2934 .max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
2935 .used_max_mid = 1,
2936 .max_mid = MLXSW_SP_MID_MAX,
2937 .used_max_pgt = 1,
2938 .max_pgt = 0,
2939 .used_max_system_port = 1,
2940 .max_system_port = 64,
2941 .used_max_vlan_groups = 1,
2942 .max_vlan_groups = 127,
2943 .used_max_regions = 1,
2944 .max_regions = 400,
2945 .used_flood_tables = 1,
2946 .used_flood_mode = 1,
2947 .flood_mode = 3,
2948 .max_fid_offset_flood_tables = 2,
2949 .fid_offset_flood_table_size = VLAN_N_VID - 1,
2950 .max_fid_flood_tables = 2,
2951 .fid_flood_table_size = MLXSW_SP_VFID_MAX,
2952 .used_max_ib_mc = 1,
2953 .max_ib_mc = 0,
2954 .used_max_pkey = 1,
2955 .max_pkey = 0,
2956 .used_kvd_sizes = 1,
2957 .kvd_linear_size = MLXSW_SP_KVD_LINEAR_SIZE,
2958 .kvd_hash_single_size = MLXSW_SP_KVD_HASH_SINGLE_SIZE,
2959 .kvd_hash_double_size = MLXSW_SP_KVD_HASH_DOUBLE_SIZE,
2960 .swid_config = {
2961 {
2962 .used_type = 1,
2963 .type = MLXSW_PORT_SWID_TYPE_ETH,
2964 }
2965 },
2966 .resource_query_enable = 1,
2967 };
2968
2969 static struct mlxsw_driver mlxsw_sp_driver = {
2970 .kind = MLXSW_DEVICE_KIND_SPECTRUM,
2971 .owner = THIS_MODULE,
2972 .priv_size = sizeof(struct mlxsw_sp),
2973 .init = mlxsw_sp_init,
2974 .fini = mlxsw_sp_fini,
2975 .port_split = mlxsw_sp_port_split,
2976 .port_unsplit = mlxsw_sp_port_unsplit,
2977 .sb_pool_get = mlxsw_sp_sb_pool_get,
2978 .sb_pool_set = mlxsw_sp_sb_pool_set,
2979 .sb_port_pool_get = mlxsw_sp_sb_port_pool_get,
2980 .sb_port_pool_set = mlxsw_sp_sb_port_pool_set,
2981 .sb_tc_pool_bind_get = mlxsw_sp_sb_tc_pool_bind_get,
2982 .sb_tc_pool_bind_set = mlxsw_sp_sb_tc_pool_bind_set,
2983 .sb_occ_snapshot = mlxsw_sp_sb_occ_snapshot,
2984 .sb_occ_max_clear = mlxsw_sp_sb_occ_max_clear,
2985 .sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
2986 .sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
2987 .txhdr_construct = mlxsw_sp_txhdr_construct,
2988 .txhdr_len = MLXSW_TXHDR_LEN,
2989 .profile = &mlxsw_sp_config_profile,
2990 };
2991
2992 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
2993 {
2994 return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
2995 }
2996
2997 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find(struct net_device *dev)
2998 {
2999 struct net_device *lower_dev;
3000 struct list_head *iter;
3001
3002 if (mlxsw_sp_port_dev_check(dev))
3003 return netdev_priv(dev);
3004
3005 netdev_for_each_all_lower_dev(dev, lower_dev, iter) {
3006 if (mlxsw_sp_port_dev_check(lower_dev))
3007 return netdev_priv(lower_dev);
3008 }
3009 return NULL;
3010 }
3011
3012 static struct mlxsw_sp *mlxsw_sp_lower_get(struct net_device *dev)
3013 {
3014 struct mlxsw_sp_port *mlxsw_sp_port;
3015
3016 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
3017 return mlxsw_sp_port ? mlxsw_sp_port->mlxsw_sp : NULL;
3018 }
3019
3020 static struct mlxsw_sp_port *mlxsw_sp_port_dev_lower_find_rcu(struct net_device *dev)
3021 {
3022 struct net_device *lower_dev;
3023 struct list_head *iter;
3024
3025 if (mlxsw_sp_port_dev_check(dev))
3026 return netdev_priv(dev);
3027
3028 netdev_for_each_all_lower_dev_rcu(dev, lower_dev, iter) {
3029 if (mlxsw_sp_port_dev_check(lower_dev))
3030 return netdev_priv(lower_dev);
3031 }
3032 return NULL;
3033 }
3034
3035 struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev)
3036 {
3037 struct mlxsw_sp_port *mlxsw_sp_port;
3038
3039 rcu_read_lock();
3040 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev);
3041 if (mlxsw_sp_port)
3042 dev_hold(mlxsw_sp_port->dev);
3043 rcu_read_unlock();
3044 return mlxsw_sp_port;
3045 }
3046
3047 void mlxsw_sp_port_dev_put(struct mlxsw_sp_port *mlxsw_sp_port)
3048 {
3049 dev_put(mlxsw_sp_port->dev);
3050 }
3051
3052 static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *r,
3053 unsigned long event)
3054 {
3055 switch (event) {
3056 case NETDEV_UP:
3057 if (!r)
3058 return true;
3059 r->ref_count++;
3060 return false;
3061 case NETDEV_DOWN:
3062 if (r && --r->ref_count == 0)
3063 return true;
3064 /* It is possible we already removed the RIF ourselves
3065 * if it was assigned to a netdev that is now a bridge
3066 * or LAG slave.
3067 */
3068 return false;
3069 }
3070
3071 return false;
3072 }
3073
3074 static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp)
3075 {
3076 int i;
3077
3078 for (i = 0; i < MLXSW_SP_RIF_MAX; i++)
3079 if (!mlxsw_sp->rifs[i])
3080 return i;
3081
3082 return MLXSW_SP_RIF_MAX;
3083 }
3084
3085 static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport,
3086 bool *p_lagged, u16 *p_system_port)
3087 {
3088 u8 local_port = mlxsw_sp_vport->local_port;
3089
3090 *p_lagged = mlxsw_sp_vport->lagged;
3091 *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port;
3092 }
3093
3094 static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport,
3095 struct net_device *l3_dev, u16 rif,
3096 bool create)
3097 {
3098 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3099 bool lagged = mlxsw_sp_vport->lagged;
3100 char ritr_pl[MLXSW_REG_RITR_LEN];
3101 u16 system_port;
3102
3103 mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif,
3104 l3_dev->mtu, l3_dev->dev_addr);
3105
3106 mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port);
3107 mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port,
3108 mlxsw_sp_vport_vid_get(mlxsw_sp_vport));
3109
3110 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3111 }
3112
3113 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
3114
3115 static struct mlxsw_sp_fid *
3116 mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev)
3117 {
3118 struct mlxsw_sp_fid *f;
3119
3120 f = kzalloc(sizeof(*f), GFP_KERNEL);
3121 if (!f)
3122 return NULL;
3123
3124 f->leave = mlxsw_sp_vport_rif_sp_leave;
3125 f->ref_count = 0;
3126 f->dev = l3_dev;
3127 f->fid = fid;
3128
3129 return f;
3130 }
3131
3132 static struct mlxsw_sp_rif *
3133 mlxsw_sp_rif_alloc(u16 rif, struct net_device *l3_dev, struct mlxsw_sp_fid *f)
3134 {
3135 struct mlxsw_sp_rif *r;
3136
3137 r = kzalloc(sizeof(*r), GFP_KERNEL);
3138 if (!r)
3139 return NULL;
3140
3141 ether_addr_copy(r->addr, l3_dev->dev_addr);
3142 r->mtu = l3_dev->mtu;
3143 r->ref_count = 1;
3144 r->dev = l3_dev;
3145 r->rif = rif;
3146 r->f = f;
3147
3148 return r;
3149 }
3150
3151 static struct mlxsw_sp_rif *
3152 mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport,
3153 struct net_device *l3_dev)
3154 {
3155 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3156 struct mlxsw_sp_fid *f;
3157 struct mlxsw_sp_rif *r;
3158 u16 fid, rif;
3159 int err;
3160
3161 rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3162 if (rif == MLXSW_SP_RIF_MAX)
3163 return ERR_PTR(-ERANGE);
3164
3165 err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, true);
3166 if (err)
3167 return ERR_PTR(err);
3168
3169 fid = mlxsw_sp_rif_sp_to_fid(rif);
3170 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true);
3171 if (err)
3172 goto err_rif_fdb_op;
3173
3174 f = mlxsw_sp_rfid_alloc(fid, l3_dev);
3175 if (!f) {
3176 err = -ENOMEM;
3177 goto err_rfid_alloc;
3178 }
3179
3180 r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3181 if (!r) {
3182 err = -ENOMEM;
3183 goto err_rif_alloc;
3184 }
3185
3186 f->r = r;
3187 mlxsw_sp->rifs[rif] = r;
3188
3189 return r;
3190
3191 err_rif_alloc:
3192 kfree(f);
3193 err_rfid_alloc:
3194 mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3195 err_rif_fdb_op:
3196 mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3197 return ERR_PTR(err);
3198 }
3199
3200 static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport,
3201 struct mlxsw_sp_rif *r)
3202 {
3203 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3204 struct net_device *l3_dev = r->dev;
3205 struct mlxsw_sp_fid *f = r->f;
3206 u16 fid = f->fid;
3207 u16 rif = r->rif;
3208
3209 mlxsw_sp->rifs[rif] = NULL;
3210 f->r = NULL;
3211
3212 kfree(r);
3213
3214 kfree(f);
3215
3216 mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false);
3217
3218 mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, l3_dev, rif, false);
3219 }
3220
3221 static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport,
3222 struct net_device *l3_dev)
3223 {
3224 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3225 struct mlxsw_sp_rif *r;
3226
3227 r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
3228 if (!r) {
3229 r = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev);
3230 if (IS_ERR(r))
3231 return PTR_ERR(r);
3232 }
3233
3234 mlxsw_sp_vport_fid_set(mlxsw_sp_vport, r->f);
3235 r->f->ref_count++;
3236
3237 netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", r->f->fid);
3238
3239 return 0;
3240 }
3241
3242 static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
3243 {
3244 struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3245
3246 netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
3247
3248 mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
3249 if (--f->ref_count == 0)
3250 mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->r);
3251 }
3252
3253 static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev,
3254 struct net_device *port_dev,
3255 unsigned long event, u16 vid)
3256 {
3257 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
3258 struct mlxsw_sp_port *mlxsw_sp_vport;
3259
3260 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
3261 if (WARN_ON(!mlxsw_sp_vport))
3262 return -EINVAL;
3263
3264 switch (event) {
3265 case NETDEV_UP:
3266 return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev);
3267 case NETDEV_DOWN:
3268 mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport);
3269 break;
3270 }
3271
3272 return 0;
3273 }
3274
3275 static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
3276 unsigned long event)
3277 {
3278 if (netif_is_bridge_port(port_dev) || netif_is_lag_port(port_dev))
3279 return 0;
3280
3281 return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1);
3282 }
3283
3284 static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
3285 struct net_device *lag_dev,
3286 unsigned long event, u16 vid)
3287 {
3288 struct net_device *port_dev;
3289 struct list_head *iter;
3290 int err;
3291
3292 netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
3293 if (mlxsw_sp_port_dev_check(port_dev)) {
3294 err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev,
3295 event, vid);
3296 if (err)
3297 return err;
3298 }
3299 }
3300
3301 return 0;
3302 }
3303
3304 static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
3305 unsigned long event)
3306 {
3307 if (netif_is_bridge_port(lag_dev))
3308 return 0;
3309
3310 return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1);
3311 }
3312
3313 static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp,
3314 struct net_device *l3_dev)
3315 {
3316 u16 fid;
3317
3318 if (is_vlan_dev(l3_dev))
3319 fid = vlan_dev_vlan_id(l3_dev);
3320 else if (mlxsw_sp->master_bridge.dev == l3_dev)
3321 fid = 1;
3322 else
3323 return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev);
3324
3325 return mlxsw_sp_fid_find(mlxsw_sp, fid);
3326 }
3327
3328 static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid)
3329 {
3330 return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID :
3331 MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
3332 }
3333
3334 static u16 mlxsw_sp_flood_table_index_get(u16 fid)
3335 {
3336 return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid;
3337 }
3338
3339 static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid,
3340 bool set)
3341 {
3342 enum mlxsw_flood_table_type table_type;
3343 char *sftr_pl;
3344 u16 index;
3345 int err;
3346
3347 sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
3348 if (!sftr_pl)
3349 return -ENOMEM;
3350
3351 table_type = mlxsw_sp_flood_table_type_get(fid);
3352 index = mlxsw_sp_flood_table_index_get(fid);
3353 mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, index, table_type,
3354 1, MLXSW_PORT_ROUTER_PORT, set);
3355 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
3356
3357 kfree(sftr_pl);
3358 return err;
3359 }
3360
3361 static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid)
3362 {
3363 if (mlxsw_sp_fid_is_vfid(fid))
3364 return MLXSW_REG_RITR_FID_IF;
3365 else
3366 return MLXSW_REG_RITR_VLAN_IF;
3367 }
3368
3369 static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp,
3370 struct net_device *l3_dev,
3371 u16 fid, u16 rif,
3372 bool create)
3373 {
3374 enum mlxsw_reg_ritr_if_type rif_type;
3375 char ritr_pl[MLXSW_REG_RITR_LEN];
3376
3377 rif_type = mlxsw_sp_rif_type_get(fid);
3378 mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, l3_dev->mtu,
3379 l3_dev->dev_addr);
3380 mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid);
3381
3382 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3383 }
3384
3385 static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp,
3386 struct net_device *l3_dev,
3387 struct mlxsw_sp_fid *f)
3388 {
3389 struct mlxsw_sp_rif *r;
3390 u16 rif;
3391 int err;
3392
3393 rif = mlxsw_sp_avail_rif_get(mlxsw_sp);
3394 if (rif == MLXSW_SP_RIF_MAX)
3395 return -ERANGE;
3396
3397 err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true);
3398 if (err)
3399 return err;
3400
3401 err = mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, true);
3402 if (err)
3403 goto err_rif_bridge_op;
3404
3405 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true);
3406 if (err)
3407 goto err_rif_fdb_op;
3408
3409 r = mlxsw_sp_rif_alloc(rif, l3_dev, f);
3410 if (!r) {
3411 err = -ENOMEM;
3412 goto err_rif_alloc;
3413 }
3414
3415 f->r = r;
3416 mlxsw_sp->rifs[rif] = r;
3417
3418 netdev_dbg(l3_dev, "RIF=%d created\n", rif);
3419
3420 return 0;
3421
3422 err_rif_alloc:
3423 mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3424 err_rif_fdb_op:
3425 mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3426 err_rif_bridge_op:
3427 mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3428 return err;
3429 }
3430
3431 void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp,
3432 struct mlxsw_sp_rif *r)
3433 {
3434 struct net_device *l3_dev = r->dev;
3435 struct mlxsw_sp_fid *f = r->f;
3436 u16 rif = r->rif;
3437
3438 mlxsw_sp->rifs[rif] = NULL;
3439 f->r = NULL;
3440
3441 kfree(r);
3442
3443 mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false);
3444
3445 mlxsw_sp_rif_bridge_op(mlxsw_sp, l3_dev, f->fid, rif, false);
3446
3447 mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false);
3448
3449 netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif);
3450 }
3451
3452 static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev,
3453 struct net_device *br_dev,
3454 unsigned long event)
3455 {
3456 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
3457 struct mlxsw_sp_fid *f;
3458
3459 /* FID can either be an actual FID if the L3 device is the
3460 * VLAN-aware bridge or a VLAN device on top. Otherwise, the
3461 * L3 device is a VLAN-unaware bridge and we get a vFID.
3462 */
3463 f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev);
3464 if (WARN_ON(!f))
3465 return -EINVAL;
3466
3467 switch (event) {
3468 case NETDEV_UP:
3469 return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f);
3470 case NETDEV_DOWN:
3471 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
3472 break;
3473 }
3474
3475 return 0;
3476 }
3477
3478 static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev,
3479 unsigned long event)
3480 {
3481 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3482 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev);
3483 u16 vid = vlan_dev_vlan_id(vlan_dev);
3484
3485 if (mlxsw_sp_port_dev_check(real_dev))
3486 return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event,
3487 vid);
3488 else if (netif_is_lag_master(real_dev))
3489 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
3490 vid);
3491 else if (netif_is_bridge_master(real_dev) &&
3492 mlxsw_sp->master_bridge.dev == real_dev)
3493 return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev,
3494 event);
3495
3496 return 0;
3497 }
3498
3499 static int mlxsw_sp_inetaddr_event(struct notifier_block *unused,
3500 unsigned long event, void *ptr)
3501 {
3502 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3503 struct net_device *dev = ifa->ifa_dev->dev;
3504 struct mlxsw_sp *mlxsw_sp;
3505 struct mlxsw_sp_rif *r;
3506 int err = 0;
3507
3508 mlxsw_sp = mlxsw_sp_lower_get(dev);
3509 if (!mlxsw_sp)
3510 goto out;
3511
3512 r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3513 if (!mlxsw_sp_rif_should_config(r, event))
3514 goto out;
3515
3516 if (mlxsw_sp_port_dev_check(dev))
3517 err = mlxsw_sp_inetaddr_port_event(dev, event);
3518 else if (netif_is_lag_master(dev))
3519 err = mlxsw_sp_inetaddr_lag_event(dev, event);
3520 else if (netif_is_bridge_master(dev))
3521 err = mlxsw_sp_inetaddr_bridge_event(dev, dev, event);
3522 else if (is_vlan_dev(dev))
3523 err = mlxsw_sp_inetaddr_vlan_event(dev, event);
3524
3525 out:
3526 return notifier_from_errno(err);
3527 }
3528
3529 static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif,
3530 const char *mac, int mtu)
3531 {
3532 char ritr_pl[MLXSW_REG_RITR_LEN];
3533 int err;
3534
3535 mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
3536 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3537 if (err)
3538 return err;
3539
3540 mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
3541 mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
3542 mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
3543 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
3544 }
3545
3546 static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev)
3547 {
3548 struct mlxsw_sp *mlxsw_sp;
3549 struct mlxsw_sp_rif *r;
3550 int err;
3551
3552 mlxsw_sp = mlxsw_sp_lower_get(dev);
3553 if (!mlxsw_sp)
3554 return 0;
3555
3556 r = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
3557 if (!r)
3558 return 0;
3559
3560 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, false);
3561 if (err)
3562 return err;
3563
3564 err = mlxsw_sp_rif_edit(mlxsw_sp, r->rif, dev->dev_addr, dev->mtu);
3565 if (err)
3566 goto err_rif_edit;
3567
3568 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, r->f->fid, true);
3569 if (err)
3570 goto err_rif_fdb_op;
3571
3572 ether_addr_copy(r->addr, dev->dev_addr);
3573 r->mtu = dev->mtu;
3574
3575 netdev_dbg(dev, "Updated RIF=%d\n", r->rif);
3576
3577 return 0;
3578
3579 err_rif_fdb_op:
3580 mlxsw_sp_rif_edit(mlxsw_sp, r->rif, r->addr, r->mtu);
3581 err_rif_edit:
3582 mlxsw_sp_rif_fdb_op(mlxsw_sp, r->addr, r->f->fid, true);
3583 return err;
3584 }
3585
3586 static bool mlxsw_sp_lag_port_fid_member(struct mlxsw_sp_port *lag_port,
3587 u16 fid)
3588 {
3589 if (mlxsw_sp_fid_is_vfid(fid))
3590 return mlxsw_sp_port_vport_find_by_fid(lag_port, fid);
3591 else
3592 return test_bit(fid, lag_port->active_vlans);
3593 }
3594
3595 static bool mlxsw_sp_port_fdb_should_flush(struct mlxsw_sp_port *mlxsw_sp_port,
3596 u16 fid)
3597 {
3598 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3599 u8 local_port = mlxsw_sp_port->local_port;
3600 u16 lag_id = mlxsw_sp_port->lag_id;
3601 int i, count = 0;
3602
3603 if (!mlxsw_sp_port->lagged)
3604 return true;
3605
3606 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
3607 struct mlxsw_sp_port *lag_port;
3608
3609 lag_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
3610 if (!lag_port || lag_port->local_port == local_port)
3611 continue;
3612 if (mlxsw_sp_lag_port_fid_member(lag_port, fid))
3613 count++;
3614 }
3615
3616 return !count;
3617 }
3618
3619 static int
3620 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3621 u16 fid)
3622 {
3623 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3624 char sfdf_pl[MLXSW_REG_SFDF_LEN];
3625
3626 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
3627 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3628 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
3629 mlxsw_sp_port->local_port);
3630
3631 netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using Port=%d, FID=%d\n",
3632 mlxsw_sp_port->local_port, fid);
3633
3634 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3635 }
3636
3637 static int
3638 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
3639 u16 fid)
3640 {
3641 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3642 char sfdf_pl[MLXSW_REG_SFDF_LEN];
3643
3644 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
3645 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
3646 mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
3647
3648 netdev_dbg(mlxsw_sp_port->dev, "FDB flushed using LAG ID=%d, FID=%d\n",
3649 mlxsw_sp_port->lag_id, fid);
3650
3651 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
3652 }
3653
3654 int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
3655 {
3656 if (!mlxsw_sp_port_fdb_should_flush(mlxsw_sp_port, fid))
3657 return 0;
3658
3659 if (mlxsw_sp_port->lagged)
3660 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port,
3661 fid);
3662 else
3663 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, fid);
3664 }
3665
3666 static void mlxsw_sp_master_bridge_gone_sync(struct mlxsw_sp *mlxsw_sp)
3667 {
3668 struct mlxsw_sp_fid *f, *tmp;
3669
3670 list_for_each_entry_safe(f, tmp, &mlxsw_sp->fids, list)
3671 if (--f->ref_count == 0)
3672 mlxsw_sp_fid_destroy(mlxsw_sp, f);
3673 else
3674 WARN_ON_ONCE(1);
3675 }
3676
3677 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
3678 struct net_device *br_dev)
3679 {
3680 return !mlxsw_sp->master_bridge.dev ||
3681 mlxsw_sp->master_bridge.dev == br_dev;
3682 }
3683
3684 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
3685 struct net_device *br_dev)
3686 {
3687 mlxsw_sp->master_bridge.dev = br_dev;
3688 mlxsw_sp->master_bridge.ref_count++;
3689 }
3690
3691 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp)
3692 {
3693 if (--mlxsw_sp->master_bridge.ref_count == 0) {
3694 mlxsw_sp->master_bridge.dev = NULL;
3695 /* It's possible upper VLAN devices are still holding
3696 * references to underlying FIDs. Drop the reference
3697 * and release the resources if it was the last one.
3698 * If it wasn't, then something bad happened.
3699 */
3700 mlxsw_sp_master_bridge_gone_sync(mlxsw_sp);
3701 }
3702 }
3703
3704 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
3705 struct net_device *br_dev)
3706 {
3707 struct net_device *dev = mlxsw_sp_port->dev;
3708 int err;
3709
3710 /* When port is not bridged untagged packets are tagged with
3711 * PVID=VID=1, thereby creating an implicit VLAN interface in
3712 * the device. Remove it and let bridge code take care of its
3713 * own VLANs.
3714 */
3715 err = mlxsw_sp_port_kill_vid(dev, 0, 1);
3716 if (err)
3717 return err;
3718
3719 mlxsw_sp_master_bridge_inc(mlxsw_sp_port->mlxsw_sp, br_dev);
3720
3721 mlxsw_sp_port->learning = 1;
3722 mlxsw_sp_port->learning_sync = 1;
3723 mlxsw_sp_port->uc_flood = 1;
3724 mlxsw_sp_port->bridged = 1;
3725
3726 return 0;
3727 }
3728
3729 static void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3730 {
3731 struct net_device *dev = mlxsw_sp_port->dev;
3732
3733 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
3734
3735 mlxsw_sp_master_bridge_dec(mlxsw_sp_port->mlxsw_sp);
3736
3737 mlxsw_sp_port->learning = 0;
3738 mlxsw_sp_port->learning_sync = 0;
3739 mlxsw_sp_port->uc_flood = 0;
3740 mlxsw_sp_port->bridged = 0;
3741
3742 /* Add implicit VLAN interface in the device, so that untagged
3743 * packets will be classified to the default vFID.
3744 */
3745 mlxsw_sp_port_add_vid(dev, 0, 1);
3746 }
3747
3748 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3749 {
3750 char sldr_pl[MLXSW_REG_SLDR_LEN];
3751
3752 mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
3753 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3754 }
3755
3756 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
3757 {
3758 char sldr_pl[MLXSW_REG_SLDR_LEN];
3759
3760 mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
3761 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3762 }
3763
3764 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
3765 u16 lag_id, u8 port_index)
3766 {
3767 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3768 char slcor_pl[MLXSW_REG_SLCOR_LEN];
3769
3770 mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
3771 lag_id, port_index);
3772 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3773 }
3774
3775 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
3776 u16 lag_id)
3777 {
3778 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3779 char slcor_pl[MLXSW_REG_SLCOR_LEN];
3780
3781 mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
3782 lag_id);
3783 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3784 }
3785
3786 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
3787 u16 lag_id)
3788 {
3789 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3790 char slcor_pl[MLXSW_REG_SLCOR_LEN];
3791
3792 mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
3793 lag_id);
3794 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3795 }
3796
3797 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
3798 u16 lag_id)
3799 {
3800 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3801 char slcor_pl[MLXSW_REG_SLCOR_LEN];
3802
3803 mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
3804 lag_id);
3805 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
3806 }
3807
3808 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3809 struct net_device *lag_dev,
3810 u16 *p_lag_id)
3811 {
3812 struct mlxsw_sp_upper *lag;
3813 int free_lag_id = -1;
3814 int i;
3815
3816 for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
3817 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
3818 if (lag->ref_count) {
3819 if (lag->dev == lag_dev) {
3820 *p_lag_id = i;
3821 return 0;
3822 }
3823 } else if (free_lag_id < 0) {
3824 free_lag_id = i;
3825 }
3826 }
3827 if (free_lag_id < 0)
3828 return -EBUSY;
3829 *p_lag_id = free_lag_id;
3830 return 0;
3831 }
3832
3833 static bool
3834 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
3835 struct net_device *lag_dev,
3836 struct netdev_lag_upper_info *lag_upper_info)
3837 {
3838 u16 lag_id;
3839
3840 if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
3841 return false;
3842 if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
3843 return false;
3844 return true;
3845 }
3846
3847 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
3848 u16 lag_id, u8 *p_port_index)
3849 {
3850 int i;
3851
3852 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
3853 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
3854 *p_port_index = i;
3855 return 0;
3856 }
3857 }
3858 return -EBUSY;
3859 }
3860
3861 static void
3862 mlxsw_sp_port_pvid_vport_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
3863 u16 lag_id)
3864 {
3865 struct mlxsw_sp_port *mlxsw_sp_vport;
3866 struct mlxsw_sp_fid *f;
3867
3868 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
3869 if (WARN_ON(!mlxsw_sp_vport))
3870 return;
3871
3872 /* If vPort is assigned a RIF, then leave it since it's no
3873 * longer valid.
3874 */
3875 f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3876 if (f)
3877 f->leave(mlxsw_sp_vport);
3878
3879 mlxsw_sp_vport->lag_id = lag_id;
3880 mlxsw_sp_vport->lagged = 1;
3881 }
3882
3883 static void
3884 mlxsw_sp_port_pvid_vport_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port)
3885 {
3886 struct mlxsw_sp_port *mlxsw_sp_vport;
3887 struct mlxsw_sp_fid *f;
3888
3889 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, 1);
3890 if (WARN_ON(!mlxsw_sp_vport))
3891 return;
3892
3893 f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
3894 if (f)
3895 f->leave(mlxsw_sp_vport);
3896
3897 mlxsw_sp_vport->lagged = 0;
3898 }
3899
3900 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
3901 struct net_device *lag_dev)
3902 {
3903 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3904 struct mlxsw_sp_upper *lag;
3905 u16 lag_id;
3906 u8 port_index;
3907 int err;
3908
3909 err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
3910 if (err)
3911 return err;
3912 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
3913 if (!lag->ref_count) {
3914 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
3915 if (err)
3916 return err;
3917 lag->dev = lag_dev;
3918 }
3919
3920 err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
3921 if (err)
3922 return err;
3923 err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
3924 if (err)
3925 goto err_col_port_add;
3926 err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
3927 if (err)
3928 goto err_col_port_enable;
3929
3930 mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
3931 mlxsw_sp_port->local_port);
3932 mlxsw_sp_port->lag_id = lag_id;
3933 mlxsw_sp_port->lagged = 1;
3934 lag->ref_count++;
3935
3936 mlxsw_sp_port_pvid_vport_lag_join(mlxsw_sp_port, lag_id);
3937
3938 return 0;
3939
3940 err_col_port_enable:
3941 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3942 err_col_port_add:
3943 if (!lag->ref_count)
3944 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
3945 return err;
3946 }
3947
3948 static void mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
3949 struct net_device *lag_dev)
3950 {
3951 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3952 u16 lag_id = mlxsw_sp_port->lag_id;
3953 struct mlxsw_sp_upper *lag;
3954
3955 if (!mlxsw_sp_port->lagged)
3956 return;
3957 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
3958 WARN_ON(lag->ref_count == 0);
3959
3960 mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
3961 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
3962
3963 if (mlxsw_sp_port->bridged) {
3964 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
3965 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
3966 }
3967
3968 if (lag->ref_count == 1)
3969 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
3970
3971 mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
3972 mlxsw_sp_port->local_port);
3973 mlxsw_sp_port->lagged = 0;
3974 lag->ref_count--;
3975
3976 mlxsw_sp_port_pvid_vport_lag_leave(mlxsw_sp_port);
3977 }
3978
3979 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
3980 u16 lag_id)
3981 {
3982 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3983 char sldr_pl[MLXSW_REG_SLDR_LEN];
3984
3985 mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
3986 mlxsw_sp_port->local_port);
3987 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3988 }
3989
3990 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
3991 u16 lag_id)
3992 {
3993 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
3994 char sldr_pl[MLXSW_REG_SLDR_LEN];
3995
3996 mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
3997 mlxsw_sp_port->local_port);
3998 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
3999 }
4000
4001 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
4002 bool lag_tx_enabled)
4003 {
4004 if (lag_tx_enabled)
4005 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
4006 mlxsw_sp_port->lag_id);
4007 else
4008 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
4009 mlxsw_sp_port->lag_id);
4010 }
4011
4012 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
4013 struct netdev_lag_lower_state_info *info)
4014 {
4015 return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
4016 }
4017
4018 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
4019 struct net_device *vlan_dev)
4020 {
4021 struct mlxsw_sp_port *mlxsw_sp_vport;
4022 u16 vid = vlan_dev_vlan_id(vlan_dev);
4023
4024 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4025 if (WARN_ON(!mlxsw_sp_vport))
4026 return -EINVAL;
4027
4028 mlxsw_sp_vport->dev = vlan_dev;
4029
4030 return 0;
4031 }
4032
4033 static void mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
4034 struct net_device *vlan_dev)
4035 {
4036 struct mlxsw_sp_port *mlxsw_sp_vport;
4037 u16 vid = vlan_dev_vlan_id(vlan_dev);
4038
4039 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4040 if (WARN_ON(!mlxsw_sp_vport))
4041 return;
4042
4043 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
4044 }
4045
4046 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
4047 unsigned long event, void *ptr)
4048 {
4049 struct netdev_notifier_changeupper_info *info;
4050 struct mlxsw_sp_port *mlxsw_sp_port;
4051 struct net_device *upper_dev;
4052 struct mlxsw_sp *mlxsw_sp;
4053 int err = 0;
4054
4055 mlxsw_sp_port = netdev_priv(dev);
4056 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
4057 info = ptr;
4058
4059 switch (event) {
4060 case NETDEV_PRECHANGEUPPER:
4061 upper_dev = info->upper_dev;
4062 if (!is_vlan_dev(upper_dev) &&
4063 !netif_is_lag_master(upper_dev) &&
4064 !netif_is_bridge_master(upper_dev))
4065 return -EINVAL;
4066 if (!info->linking)
4067 break;
4068 /* HW limitation forbids to put ports to multiple bridges. */
4069 if (netif_is_bridge_master(upper_dev) &&
4070 !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
4071 return -EINVAL;
4072 if (netif_is_lag_master(upper_dev) &&
4073 !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
4074 info->upper_info))
4075 return -EINVAL;
4076 if (netif_is_lag_master(upper_dev) && vlan_uses_dev(dev))
4077 return -EINVAL;
4078 if (netif_is_lag_port(dev) && is_vlan_dev(upper_dev) &&
4079 !netif_is_lag_master(vlan_dev_real_dev(upper_dev)))
4080 return -EINVAL;
4081 break;
4082 case NETDEV_CHANGEUPPER:
4083 upper_dev = info->upper_dev;
4084 if (is_vlan_dev(upper_dev)) {
4085 if (info->linking)
4086 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
4087 upper_dev);
4088 else
4089 mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
4090 upper_dev);
4091 } else if (netif_is_bridge_master(upper_dev)) {
4092 if (info->linking)
4093 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port,
4094 upper_dev);
4095 else
4096 mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
4097 } else if (netif_is_lag_master(upper_dev)) {
4098 if (info->linking)
4099 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
4100 upper_dev);
4101 else
4102 mlxsw_sp_port_lag_leave(mlxsw_sp_port,
4103 upper_dev);
4104 } else {
4105 err = -EINVAL;
4106 WARN_ON(1);
4107 }
4108 break;
4109 }
4110
4111 return err;
4112 }
4113
4114 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
4115 unsigned long event, void *ptr)
4116 {
4117 struct netdev_notifier_changelowerstate_info *info;
4118 struct mlxsw_sp_port *mlxsw_sp_port;
4119 int err;
4120
4121 mlxsw_sp_port = netdev_priv(dev);
4122 info = ptr;
4123
4124 switch (event) {
4125 case NETDEV_CHANGELOWERSTATE:
4126 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
4127 err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
4128 info->lower_state_info);
4129 if (err)
4130 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
4131 }
4132 break;
4133 }
4134
4135 return 0;
4136 }
4137
4138 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
4139 unsigned long event, void *ptr)
4140 {
4141 switch (event) {
4142 case NETDEV_PRECHANGEUPPER:
4143 case NETDEV_CHANGEUPPER:
4144 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
4145 case NETDEV_CHANGELOWERSTATE:
4146 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
4147 }
4148
4149 return 0;
4150 }
4151
4152 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
4153 unsigned long event, void *ptr)
4154 {
4155 struct net_device *dev;
4156 struct list_head *iter;
4157 int ret;
4158
4159 netdev_for_each_lower_dev(lag_dev, dev, iter) {
4160 if (mlxsw_sp_port_dev_check(dev)) {
4161 ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4162 if (ret)
4163 return ret;
4164 }
4165 }
4166
4167 return 0;
4168 }
4169
4170 static int mlxsw_sp_master_bridge_vlan_link(struct mlxsw_sp *mlxsw_sp,
4171 struct net_device *vlan_dev)
4172 {
4173 u16 fid = vlan_dev_vlan_id(vlan_dev);
4174 struct mlxsw_sp_fid *f;
4175
4176 f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4177 if (!f) {
4178 f = mlxsw_sp_fid_create(mlxsw_sp, fid);
4179 if (IS_ERR(f))
4180 return PTR_ERR(f);
4181 }
4182
4183 f->ref_count++;
4184
4185 return 0;
4186 }
4187
4188 static void mlxsw_sp_master_bridge_vlan_unlink(struct mlxsw_sp *mlxsw_sp,
4189 struct net_device *vlan_dev)
4190 {
4191 u16 fid = vlan_dev_vlan_id(vlan_dev);
4192 struct mlxsw_sp_fid *f;
4193
4194 f = mlxsw_sp_fid_find(mlxsw_sp, fid);
4195 if (f && f->r)
4196 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4197 if (f && --f->ref_count == 0)
4198 mlxsw_sp_fid_destroy(mlxsw_sp, f);
4199 }
4200
4201 static int mlxsw_sp_netdevice_bridge_event(struct net_device *br_dev,
4202 unsigned long event, void *ptr)
4203 {
4204 struct netdev_notifier_changeupper_info *info;
4205 struct net_device *upper_dev;
4206 struct mlxsw_sp *mlxsw_sp;
4207 int err;
4208
4209 mlxsw_sp = mlxsw_sp_lower_get(br_dev);
4210 if (!mlxsw_sp)
4211 return 0;
4212 if (br_dev != mlxsw_sp->master_bridge.dev)
4213 return 0;
4214
4215 info = ptr;
4216
4217 switch (event) {
4218 case NETDEV_CHANGEUPPER:
4219 upper_dev = info->upper_dev;
4220 if (!is_vlan_dev(upper_dev))
4221 break;
4222 if (info->linking) {
4223 err = mlxsw_sp_master_bridge_vlan_link(mlxsw_sp,
4224 upper_dev);
4225 if (err)
4226 return err;
4227 } else {
4228 mlxsw_sp_master_bridge_vlan_unlink(mlxsw_sp, upper_dev);
4229 }
4230 break;
4231 }
4232
4233 return 0;
4234 }
4235
4236 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
4237 {
4238 return find_first_zero_bit(mlxsw_sp->vfids.mapped,
4239 MLXSW_SP_VFID_MAX);
4240 }
4241
4242 static int mlxsw_sp_vfid_op(struct mlxsw_sp *mlxsw_sp, u16 fid, bool create)
4243 {
4244 char sfmr_pl[MLXSW_REG_SFMR_LEN];
4245
4246 mlxsw_reg_sfmr_pack(sfmr_pl, !create, fid, 0);
4247 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
4248 }
4249
4250 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport);
4251
4252 static struct mlxsw_sp_fid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
4253 struct net_device *br_dev)
4254 {
4255 struct device *dev = mlxsw_sp->bus_info->dev;
4256 struct mlxsw_sp_fid *f;
4257 u16 vfid, fid;
4258 int err;
4259
4260 vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
4261 if (vfid == MLXSW_SP_VFID_MAX) {
4262 dev_err(dev, "No available vFIDs\n");
4263 return ERR_PTR(-ERANGE);
4264 }
4265
4266 fid = mlxsw_sp_vfid_to_fid(vfid);
4267 err = mlxsw_sp_vfid_op(mlxsw_sp, fid, true);
4268 if (err) {
4269 dev_err(dev, "Failed to create FID=%d\n", fid);
4270 return ERR_PTR(err);
4271 }
4272
4273 f = kzalloc(sizeof(*f), GFP_KERNEL);
4274 if (!f)
4275 goto err_allocate_vfid;
4276
4277 f->leave = mlxsw_sp_vport_vfid_leave;
4278 f->fid = fid;
4279 f->dev = br_dev;
4280
4281 list_add(&f->list, &mlxsw_sp->vfids.list);
4282 set_bit(vfid, mlxsw_sp->vfids.mapped);
4283
4284 return f;
4285
4286 err_allocate_vfid:
4287 mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4288 return ERR_PTR(-ENOMEM);
4289 }
4290
4291 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
4292 struct mlxsw_sp_fid *f)
4293 {
4294 u16 vfid = mlxsw_sp_fid_to_vfid(f->fid);
4295 u16 fid = f->fid;
4296
4297 clear_bit(vfid, mlxsw_sp->vfids.mapped);
4298 list_del(&f->list);
4299
4300 if (f->r)
4301 mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->r);
4302
4303 kfree(f);
4304
4305 mlxsw_sp_vfid_op(mlxsw_sp, fid, false);
4306 }
4307
4308 static int mlxsw_sp_vport_fid_map(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
4309 bool valid)
4310 {
4311 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
4312 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4313
4314 return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport, mt, valid, fid,
4315 vid);
4316 }
4317
4318 static int mlxsw_sp_vport_vfid_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4319 struct net_device *br_dev)
4320 {
4321 struct mlxsw_sp_fid *f;
4322 int err;
4323
4324 f = mlxsw_sp_vfid_find(mlxsw_sp_vport->mlxsw_sp, br_dev);
4325 if (!f) {
4326 f = mlxsw_sp_vfid_create(mlxsw_sp_vport->mlxsw_sp, br_dev);
4327 if (IS_ERR(f))
4328 return PTR_ERR(f);
4329 }
4330
4331 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, true);
4332 if (err)
4333 goto err_vport_flood_set;
4334
4335 err = mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, true);
4336 if (err)
4337 goto err_vport_fid_map;
4338
4339 mlxsw_sp_vport_fid_set(mlxsw_sp_vport, f);
4340 f->ref_count++;
4341
4342 netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", f->fid);
4343
4344 return 0;
4345
4346 err_vport_fid_map:
4347 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4348 err_vport_flood_set:
4349 if (!f->ref_count)
4350 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4351 return err;
4352 }
4353
4354 static void mlxsw_sp_vport_vfid_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4355 {
4356 struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4357
4358 netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid);
4359
4360 mlxsw_sp_vport_fid_map(mlxsw_sp_vport, f->fid, false);
4361
4362 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, f->fid, false);
4363
4364 mlxsw_sp_port_fdb_flush(mlxsw_sp_vport, f->fid);
4365
4366 mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL);
4367 if (--f->ref_count == 0)
4368 mlxsw_sp_vfid_destroy(mlxsw_sp_vport->mlxsw_sp, f);
4369 }
4370
4371 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
4372 struct net_device *br_dev)
4373 {
4374 struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport);
4375 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4376 struct net_device *dev = mlxsw_sp_vport->dev;
4377 int err;
4378
4379 if (f && !WARN_ON(!f->leave))
4380 f->leave(mlxsw_sp_vport);
4381
4382 err = mlxsw_sp_vport_vfid_join(mlxsw_sp_vport, br_dev);
4383 if (err) {
4384 netdev_err(dev, "Failed to join vFID\n");
4385 return err;
4386 }
4387
4388 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
4389 if (err) {
4390 netdev_err(dev, "Failed to enable learning\n");
4391 goto err_port_vid_learning_set;
4392 }
4393
4394 mlxsw_sp_vport->learning = 1;
4395 mlxsw_sp_vport->learning_sync = 1;
4396 mlxsw_sp_vport->uc_flood = 1;
4397 mlxsw_sp_vport->bridged = 1;
4398
4399 return 0;
4400
4401 err_port_vid_learning_set:
4402 mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4403 return err;
4404 }
4405
4406 static void mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport)
4407 {
4408 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
4409
4410 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
4411
4412 mlxsw_sp_vport_vfid_leave(mlxsw_sp_vport);
4413
4414 mlxsw_sp_vport->learning = 0;
4415 mlxsw_sp_vport->learning_sync = 0;
4416 mlxsw_sp_vport->uc_flood = 0;
4417 mlxsw_sp_vport->bridged = 0;
4418 }
4419
4420 static bool
4421 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
4422 const struct net_device *br_dev)
4423 {
4424 struct mlxsw_sp_port *mlxsw_sp_vport;
4425
4426 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
4427 vport.list) {
4428 struct net_device *dev = mlxsw_sp_vport_dev_get(mlxsw_sp_vport);
4429
4430 if (dev && dev == br_dev)
4431 return false;
4432 }
4433
4434 return true;
4435 }
4436
4437 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
4438 unsigned long event, void *ptr,
4439 u16 vid)
4440 {
4441 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
4442 struct netdev_notifier_changeupper_info *info = ptr;
4443 struct mlxsw_sp_port *mlxsw_sp_vport;
4444 struct net_device *upper_dev;
4445 int err = 0;
4446
4447 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
4448
4449 switch (event) {
4450 case NETDEV_PRECHANGEUPPER:
4451 upper_dev = info->upper_dev;
4452 if (!netif_is_bridge_master(upper_dev))
4453 return -EINVAL;
4454 if (!info->linking)
4455 break;
4456 /* We can't have multiple VLAN interfaces configured on
4457 * the same port and being members in the same bridge.
4458 */
4459 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
4460 upper_dev))
4461 return -EINVAL;
4462 break;
4463 case NETDEV_CHANGEUPPER:
4464 upper_dev = info->upper_dev;
4465 if (info->linking) {
4466 if (WARN_ON(!mlxsw_sp_vport))
4467 return -EINVAL;
4468 err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
4469 upper_dev);
4470 } else {
4471 if (!mlxsw_sp_vport)
4472 return 0;
4473 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport);
4474 }
4475 }
4476
4477 return err;
4478 }
4479
4480 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
4481 unsigned long event, void *ptr,
4482 u16 vid)
4483 {
4484 struct net_device *dev;
4485 struct list_head *iter;
4486 int ret;
4487
4488 netdev_for_each_lower_dev(lag_dev, dev, iter) {
4489 if (mlxsw_sp_port_dev_check(dev)) {
4490 ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
4491 vid);
4492 if (ret)
4493 return ret;
4494 }
4495 }
4496
4497 return 0;
4498 }
4499
4500 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
4501 unsigned long event, void *ptr)
4502 {
4503 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
4504 u16 vid = vlan_dev_vlan_id(vlan_dev);
4505
4506 if (mlxsw_sp_port_dev_check(real_dev))
4507 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
4508 vid);
4509 else if (netif_is_lag_master(real_dev))
4510 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
4511 vid);
4512
4513 return 0;
4514 }
4515
4516 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
4517 unsigned long event, void *ptr)
4518 {
4519 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4520 int err = 0;
4521
4522 if (event == NETDEV_CHANGEADDR || event == NETDEV_CHANGEMTU)
4523 err = mlxsw_sp_netdevice_router_port_event(dev);
4524 else if (mlxsw_sp_port_dev_check(dev))
4525 err = mlxsw_sp_netdevice_port_event(dev, event, ptr);
4526 else if (netif_is_lag_master(dev))
4527 err = mlxsw_sp_netdevice_lag_event(dev, event, ptr);
4528 else if (netif_is_bridge_master(dev))
4529 err = mlxsw_sp_netdevice_bridge_event(dev, event, ptr);
4530 else if (is_vlan_dev(dev))
4531 err = mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
4532
4533 return notifier_from_errno(err);
4534 }
4535
4536 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
4537 .notifier_call = mlxsw_sp_netdevice_event,
4538 };
4539
4540 static struct notifier_block mlxsw_sp_inetaddr_nb __read_mostly = {
4541 .notifier_call = mlxsw_sp_inetaddr_event,
4542 .priority = 10, /* Must be called before FIB notifier block */
4543 };
4544
4545 static struct notifier_block mlxsw_sp_router_netevent_nb __read_mostly = {
4546 .notifier_call = mlxsw_sp_router_netevent_event,
4547 };
4548
4549 static int __init mlxsw_sp_module_init(void)
4550 {
4551 int err;
4552
4553 register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4554 register_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4555 register_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4556
4557 err = mlxsw_core_driver_register(&mlxsw_sp_driver);
4558 if (err)
4559 goto err_core_driver_register;
4560 return 0;
4561
4562 err_core_driver_register:
4563 unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4564 unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4565 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4566 return err;
4567 }
4568
4569 static void __exit mlxsw_sp_module_exit(void)
4570 {
4571 mlxsw_core_driver_unregister(&mlxsw_sp_driver);
4572 unregister_netevent_notifier(&mlxsw_sp_router_netevent_nb);
4573 unregister_inetaddr_notifier(&mlxsw_sp_inetaddr_nb);
4574 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
4575 }
4576
4577 module_init(mlxsw_sp_module_init);
4578 module_exit(mlxsw_sp_module_exit);
4579
4580 MODULE_LICENSE("Dual BSD/GPL");
4581 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
4582 MODULE_DESCRIPTION("Mellanox Spectrum driver");
4583 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);
Linux kernel - Deliverables
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