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mlxsw: spectrum: Return NOTIFY_BAD on bridge failure
[mirror_ubuntu-bionic-kernel.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 <net/switchdev.h>
53 #include <generated/utsrelease.h>
54
55 #include "spectrum.h"
56 #include "core.h"
57 #include "reg.h"
58 #include "port.h"
59 #include "trap.h"
60 #include "txheader.h"
61
62 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
63 static const char mlxsw_sp_driver_version[] = "1.0";
64
65 /* tx_hdr_version
66 * Tx header version.
67 * Must be set to 1.
68 */
69 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
70
71 /* tx_hdr_ctl
72 * Packet control type.
73 * 0 - Ethernet control (e.g. EMADs, LACP)
74 * 1 - Ethernet data
75 */
76 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
77
78 /* tx_hdr_proto
79 * Packet protocol type. Must be set to 1 (Ethernet).
80 */
81 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
82
83 /* tx_hdr_rx_is_router
84 * Packet is sent from the router. Valid for data packets only.
85 */
86 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
87
88 /* tx_hdr_fid_valid
89 * Indicates if the 'fid' field is valid and should be used for
90 * forwarding lookup. Valid for data packets only.
91 */
92 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
93
94 /* tx_hdr_swid
95 * Switch partition ID. Must be set to 0.
96 */
97 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
98
99 /* tx_hdr_control_tclass
100 * Indicates if the packet should use the control TClass and not one
101 * of the data TClasses.
102 */
103 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
104
105 /* tx_hdr_etclass
106 * Egress TClass to be used on the egress device on the egress port.
107 */
108 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
109
110 /* tx_hdr_port_mid
111 * Destination local port for unicast packets.
112 * Destination multicast ID for multicast packets.
113 *
114 * Control packets are directed to a specific egress port, while data
115 * packets are transmitted through the CPU port (0) into the switch partition,
116 * where forwarding rules are applied.
117 */
118 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
119
120 /* tx_hdr_fid
121 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
122 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
123 * Valid for data packets only.
124 */
125 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
126
127 /* tx_hdr_type
128 * 0 - Data packets
129 * 6 - Control packets
130 */
131 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
132
133 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
134 const struct mlxsw_tx_info *tx_info)
135 {
136 char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
137
138 memset(txhdr, 0, MLXSW_TXHDR_LEN);
139
140 mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
141 mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
142 mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
143 mlxsw_tx_hdr_swid_set(txhdr, 0);
144 mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
145 mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
146 mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
147 }
148
149 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
150 {
151 char spad_pl[MLXSW_REG_SPAD_LEN];
152 int err;
153
154 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
155 if (err)
156 return err;
157 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
158 return 0;
159 }
160
161 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
162 bool is_up)
163 {
164 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
165 char paos_pl[MLXSW_REG_PAOS_LEN];
166
167 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
168 is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
169 MLXSW_PORT_ADMIN_STATUS_DOWN);
170 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
171 }
172
173 static int mlxsw_sp_port_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
174 bool *p_is_up)
175 {
176 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
177 char paos_pl[MLXSW_REG_PAOS_LEN];
178 u8 oper_status;
179 int err;
180
181 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
182 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
183 if (err)
184 return err;
185 oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
186 *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
187 return 0;
188 }
189
190 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
191 unsigned char *addr)
192 {
193 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
194 char ppad_pl[MLXSW_REG_PPAD_LEN];
195
196 mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
197 mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
198 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
199 }
200
201 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
202 {
203 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
204 unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
205
206 ether_addr_copy(addr, mlxsw_sp->base_mac);
207 addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
208 return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
209 }
210
211 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
212 u16 vid, enum mlxsw_reg_spms_state state)
213 {
214 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
215 char *spms_pl;
216 int err;
217
218 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
219 if (!spms_pl)
220 return -ENOMEM;
221 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
222 mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
223 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
224 kfree(spms_pl);
225 return err;
226 }
227
228 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
229 {
230 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
231 char pmtu_pl[MLXSW_REG_PMTU_LEN];
232 int max_mtu;
233 int err;
234
235 mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
236 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
237 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
238 if (err)
239 return err;
240 max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
241
242 if (mtu > max_mtu)
243 return -EINVAL;
244
245 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
246 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
247 }
248
249 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
250 {
251 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
252 char pspa_pl[MLXSW_REG_PSPA_LEN];
253
254 mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
255 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
256 }
257
258 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
259 bool enable)
260 {
261 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
262 char svpe_pl[MLXSW_REG_SVPE_LEN];
263
264 mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
265 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
266 }
267
268 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
269 enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
270 u16 vid)
271 {
272 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
273 char svfa_pl[MLXSW_REG_SVFA_LEN];
274
275 mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
276 fid, vid);
277 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
278 }
279
280 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
281 u16 vid, bool learn_enable)
282 {
283 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
284 char *spvmlr_pl;
285 int err;
286
287 spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
288 if (!spvmlr_pl)
289 return -ENOMEM;
290 mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
291 learn_enable);
292 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
293 kfree(spvmlr_pl);
294 return err;
295 }
296
297 static int
298 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
299 {
300 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
301 char sspr_pl[MLXSW_REG_SSPR_LEN];
302
303 mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
304 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
305 }
306
307 static int mlxsw_sp_port_module_check(struct mlxsw_sp_port *mlxsw_sp_port,
308 bool *p_usable)
309 {
310 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
311 char pmlp_pl[MLXSW_REG_PMLP_LEN];
312 int err;
313
314 mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
315 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
316 if (err)
317 return err;
318 *p_usable = mlxsw_reg_pmlp_width_get(pmlp_pl) ? true : false;
319 return 0;
320 }
321
322 static int mlxsw_sp_port_open(struct net_device *dev)
323 {
324 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
325 int err;
326
327 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
328 if (err)
329 return err;
330 netif_start_queue(dev);
331 return 0;
332 }
333
334 static int mlxsw_sp_port_stop(struct net_device *dev)
335 {
336 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
337
338 netif_stop_queue(dev);
339 return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
340 }
341
342 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
343 struct net_device *dev)
344 {
345 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
346 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
347 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
348 const struct mlxsw_tx_info tx_info = {
349 .local_port = mlxsw_sp_port->local_port,
350 .is_emad = false,
351 };
352 u64 len;
353 int err;
354
355 if (mlxsw_core_skb_transmit_busy(mlxsw_sp, &tx_info))
356 return NETDEV_TX_BUSY;
357
358 if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
359 struct sk_buff *skb_orig = skb;
360
361 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
362 if (!skb) {
363 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
364 dev_kfree_skb_any(skb_orig);
365 return NETDEV_TX_OK;
366 }
367 }
368
369 if (eth_skb_pad(skb)) {
370 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
371 return NETDEV_TX_OK;
372 }
373
374 mlxsw_sp_txhdr_construct(skb, &tx_info);
375 len = skb->len;
376 /* Due to a race we might fail here because of a full queue. In that
377 * unlikely case we simply drop the packet.
378 */
379 err = mlxsw_core_skb_transmit(mlxsw_sp, skb, &tx_info);
380
381 if (!err) {
382 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
383 u64_stats_update_begin(&pcpu_stats->syncp);
384 pcpu_stats->tx_packets++;
385 pcpu_stats->tx_bytes += len;
386 u64_stats_update_end(&pcpu_stats->syncp);
387 } else {
388 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
389 dev_kfree_skb_any(skb);
390 }
391 return NETDEV_TX_OK;
392 }
393
394 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
395 {
396 }
397
398 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
399 {
400 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
401 struct sockaddr *addr = p;
402 int err;
403
404 if (!is_valid_ether_addr(addr->sa_data))
405 return -EADDRNOTAVAIL;
406
407 err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
408 if (err)
409 return err;
410 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
411 return 0;
412 }
413
414 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
415 {
416 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
417 int err;
418
419 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
420 if (err)
421 return err;
422 dev->mtu = mtu;
423 return 0;
424 }
425
426 static struct rtnl_link_stats64 *
427 mlxsw_sp_port_get_stats64(struct net_device *dev,
428 struct rtnl_link_stats64 *stats)
429 {
430 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
431 struct mlxsw_sp_port_pcpu_stats *p;
432 u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
433 u32 tx_dropped = 0;
434 unsigned int start;
435 int i;
436
437 for_each_possible_cpu(i) {
438 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
439 do {
440 start = u64_stats_fetch_begin_irq(&p->syncp);
441 rx_packets = p->rx_packets;
442 rx_bytes = p->rx_bytes;
443 tx_packets = p->tx_packets;
444 tx_bytes = p->tx_bytes;
445 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
446
447 stats->rx_packets += rx_packets;
448 stats->rx_bytes += rx_bytes;
449 stats->tx_packets += tx_packets;
450 stats->tx_bytes += tx_bytes;
451 /* tx_dropped is u32, updated without syncp protection. */
452 tx_dropped += p->tx_dropped;
453 }
454 stats->tx_dropped = tx_dropped;
455 return stats;
456 }
457
458 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
459 u16 vid_end, bool is_member, bool untagged)
460 {
461 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
462 char *spvm_pl;
463 int err;
464
465 spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
466 if (!spvm_pl)
467 return -ENOMEM;
468
469 mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
470 vid_end, is_member, untagged);
471 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
472 kfree(spvm_pl);
473 return err;
474 }
475
476 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
477 {
478 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
479 u16 vid, last_visited_vid;
480 int err;
481
482 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
483 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
484 vid);
485 if (err) {
486 last_visited_vid = vid;
487 goto err_port_vid_to_fid_set;
488 }
489 }
490
491 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
492 if (err) {
493 last_visited_vid = VLAN_N_VID;
494 goto err_port_vid_to_fid_set;
495 }
496
497 return 0;
498
499 err_port_vid_to_fid_set:
500 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
501 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
502 vid);
503 return err;
504 }
505
506 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
507 {
508 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
509 u16 vid;
510 int err;
511
512 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
513 if (err)
514 return err;
515
516 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
517 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
518 vid, vid);
519 if (err)
520 return err;
521 }
522
523 return 0;
524 }
525
526 static struct mlxsw_sp_vfid *
527 mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
528 {
529 struct mlxsw_sp_vfid *vfid;
530
531 list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
532 if (vfid->vid == vid)
533 return vfid;
534 }
535
536 return NULL;
537 }
538
539 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
540 {
541 return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
542 MLXSW_SP_VFID_PORT_MAX);
543 }
544
545 static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
546 {
547 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
548 char sfmr_pl[MLXSW_REG_SFMR_LEN];
549
550 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
551 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
552 }
553
554 static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
555 {
556 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
557 char sfmr_pl[MLXSW_REG_SFMR_LEN];
558
559 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
560 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
561 }
562
563 static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
564 u16 vid)
565 {
566 struct device *dev = mlxsw_sp->bus_info->dev;
567 struct mlxsw_sp_vfid *vfid;
568 u16 n_vfid;
569 int err;
570
571 n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
572 if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
573 dev_err(dev, "No available vFIDs\n");
574 return ERR_PTR(-ERANGE);
575 }
576
577 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
578 if (err) {
579 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
580 return ERR_PTR(err);
581 }
582
583 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
584 if (!vfid)
585 goto err_allocate_vfid;
586
587 vfid->vfid = n_vfid;
588 vfid->vid = vid;
589
590 list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
591 set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
592
593 return vfid;
594
595 err_allocate_vfid:
596 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
597 return ERR_PTR(-ENOMEM);
598 }
599
600 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
601 struct mlxsw_sp_vfid *vfid)
602 {
603 clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
604 list_del(&vfid->list);
605
606 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
607
608 kfree(vfid);
609 }
610
611 static struct mlxsw_sp_port *
612 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
613 struct mlxsw_sp_vfid *vfid)
614 {
615 struct mlxsw_sp_port *mlxsw_sp_vport;
616
617 mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
618 if (!mlxsw_sp_vport)
619 return NULL;
620
621 /* dev will be set correctly after the VLAN device is linked
622 * with the real device. In case of bridge SELF invocation, dev
623 * will remain as is.
624 */
625 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
626 mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
627 mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
628 mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
629 mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
630 mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
631 mlxsw_sp_vport->vport.vfid = vfid;
632 mlxsw_sp_vport->vport.vid = vfid->vid;
633
634 list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
635
636 return mlxsw_sp_vport;
637 }
638
639 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
640 {
641 list_del(&mlxsw_sp_vport->vport.list);
642 kfree(mlxsw_sp_vport);
643 }
644
645 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
646 u16 vid)
647 {
648 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
649 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
650 struct mlxsw_sp_port *mlxsw_sp_vport;
651 struct mlxsw_sp_vfid *vfid;
652 int err;
653
654 /* VLAN 0 is added to HW filter when device goes up, but it is
655 * reserved in our case, so simply return.
656 */
657 if (!vid)
658 return 0;
659
660 if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
661 netdev_warn(dev, "VID=%d already configured\n", vid);
662 return 0;
663 }
664
665 vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
666 if (!vfid) {
667 vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
668 if (IS_ERR(vfid)) {
669 netdev_err(dev, "Failed to create vFID for VID=%d\n",
670 vid);
671 return PTR_ERR(vfid);
672 }
673 }
674
675 mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
676 if (!mlxsw_sp_vport) {
677 netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
678 err = -ENOMEM;
679 goto err_port_vport_create;
680 }
681
682 if (!vfid->nr_vports) {
683 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
684 true, false);
685 if (err) {
686 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
687 vfid->vfid);
688 goto err_vport_flood_set;
689 }
690 }
691
692 /* When adding the first VLAN interface on a bridged port we need to
693 * transition all the active 802.1Q bridge VLANs to use explicit
694 * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
695 */
696 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
697 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
698 if (err) {
699 netdev_err(dev, "Failed to set to Virtual mode\n");
700 goto err_port_vp_mode_trans;
701 }
702 }
703
704 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
705 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
706 true,
707 mlxsw_sp_vfid_to_fid(vfid->vfid),
708 vid);
709 if (err) {
710 netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
711 vid, vfid->vfid);
712 goto err_port_vid_to_fid_set;
713 }
714
715 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
716 if (err) {
717 netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
718 goto err_port_vid_learning_set;
719 }
720
721 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
722 if (err) {
723 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
724 vid);
725 goto err_port_add_vid;
726 }
727
728 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
729 MLXSW_REG_SPMS_STATE_FORWARDING);
730 if (err) {
731 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
732 goto err_port_stp_state_set;
733 }
734
735 vfid->nr_vports++;
736
737 return 0;
738
739 err_port_stp_state_set:
740 mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
741 err_port_add_vid:
742 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
743 err_port_vid_learning_set:
744 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
745 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
746 mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
747 err_port_vid_to_fid_set:
748 if (list_is_singular(&mlxsw_sp_port->vports_list))
749 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
750 err_port_vp_mode_trans:
751 if (!vfid->nr_vports)
752 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
753 false);
754 err_vport_flood_set:
755 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
756 err_port_vport_create:
757 if (!vfid->nr_vports)
758 mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
759 return err;
760 }
761
762 int mlxsw_sp_port_kill_vid(struct net_device *dev,
763 __be16 __always_unused proto, u16 vid)
764 {
765 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
766 struct mlxsw_sp_port *mlxsw_sp_vport;
767 struct mlxsw_sp_vfid *vfid;
768 int err;
769
770 /* VLAN 0 is removed from HW filter when device goes down, but
771 * it is reserved in our case, so simply return.
772 */
773 if (!vid)
774 return 0;
775
776 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
777 if (!mlxsw_sp_vport) {
778 netdev_warn(dev, "VID=%d does not exist\n", vid);
779 return 0;
780 }
781
782 vfid = mlxsw_sp_vport->vport.vfid;
783
784 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
785 MLXSW_REG_SPMS_STATE_DISCARDING);
786 if (err) {
787 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
788 return err;
789 }
790
791 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
792 if (err) {
793 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
794 vid);
795 return err;
796 }
797
798 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
799 if (err) {
800 netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
801 return err;
802 }
803
804 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
805 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
806 false,
807 mlxsw_sp_vfid_to_fid(vfid->vfid),
808 vid);
809 if (err) {
810 netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
811 vid, vfid->vfid);
812 return err;
813 }
814
815 /* When removing the last VLAN interface on a bridged port we need to
816 * transition all active 802.1Q bridge VLANs to use VID to FID
817 * mappings and set port's mode to VLAN mode.
818 */
819 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
820 err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
821 if (err) {
822 netdev_err(dev, "Failed to set to VLAN mode\n");
823 return err;
824 }
825 }
826
827 vfid->nr_vports--;
828 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
829
830 /* Destroy the vFID if no vPorts are assigned to it anymore. */
831 if (!vfid->nr_vports)
832 mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
833
834 return 0;
835 }
836
837 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
838 .ndo_open = mlxsw_sp_port_open,
839 .ndo_stop = mlxsw_sp_port_stop,
840 .ndo_start_xmit = mlxsw_sp_port_xmit,
841 .ndo_set_rx_mode = mlxsw_sp_set_rx_mode,
842 .ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
843 .ndo_change_mtu = mlxsw_sp_port_change_mtu,
844 .ndo_get_stats64 = mlxsw_sp_port_get_stats64,
845 .ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
846 .ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
847 .ndo_fdb_add = switchdev_port_fdb_add,
848 .ndo_fdb_del = switchdev_port_fdb_del,
849 .ndo_fdb_dump = switchdev_port_fdb_dump,
850 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
851 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
852 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
853 };
854
855 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
856 struct ethtool_drvinfo *drvinfo)
857 {
858 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
859 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
860
861 strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
862 strlcpy(drvinfo->version, mlxsw_sp_driver_version,
863 sizeof(drvinfo->version));
864 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
865 "%d.%d.%d",
866 mlxsw_sp->bus_info->fw_rev.major,
867 mlxsw_sp->bus_info->fw_rev.minor,
868 mlxsw_sp->bus_info->fw_rev.subminor);
869 strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
870 sizeof(drvinfo->bus_info));
871 }
872
873 struct mlxsw_sp_port_hw_stats {
874 char str[ETH_GSTRING_LEN];
875 u64 (*getter)(char *payload);
876 };
877
878 static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
879 {
880 .str = "a_frames_transmitted_ok",
881 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
882 },
883 {
884 .str = "a_frames_received_ok",
885 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
886 },
887 {
888 .str = "a_frame_check_sequence_errors",
889 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
890 },
891 {
892 .str = "a_alignment_errors",
893 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
894 },
895 {
896 .str = "a_octets_transmitted_ok",
897 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
898 },
899 {
900 .str = "a_octets_received_ok",
901 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
902 },
903 {
904 .str = "a_multicast_frames_xmitted_ok",
905 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
906 },
907 {
908 .str = "a_broadcast_frames_xmitted_ok",
909 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
910 },
911 {
912 .str = "a_multicast_frames_received_ok",
913 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
914 },
915 {
916 .str = "a_broadcast_frames_received_ok",
917 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
918 },
919 {
920 .str = "a_in_range_length_errors",
921 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
922 },
923 {
924 .str = "a_out_of_range_length_field",
925 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
926 },
927 {
928 .str = "a_frame_too_long_errors",
929 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
930 },
931 {
932 .str = "a_symbol_error_during_carrier",
933 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
934 },
935 {
936 .str = "a_mac_control_frames_transmitted",
937 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
938 },
939 {
940 .str = "a_mac_control_frames_received",
941 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
942 },
943 {
944 .str = "a_unsupported_opcodes_received",
945 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
946 },
947 {
948 .str = "a_pause_mac_ctrl_frames_received",
949 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
950 },
951 {
952 .str = "a_pause_mac_ctrl_frames_xmitted",
953 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
954 },
955 };
956
957 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
958
959 static void mlxsw_sp_port_get_strings(struct net_device *dev,
960 u32 stringset, u8 *data)
961 {
962 u8 *p = data;
963 int i;
964
965 switch (stringset) {
966 case ETH_SS_STATS:
967 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
968 memcpy(p, mlxsw_sp_port_hw_stats[i].str,
969 ETH_GSTRING_LEN);
970 p += ETH_GSTRING_LEN;
971 }
972 break;
973 }
974 }
975
976 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
977 enum ethtool_phys_id_state state)
978 {
979 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
980 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
981 char mlcr_pl[MLXSW_REG_MLCR_LEN];
982 bool active;
983
984 switch (state) {
985 case ETHTOOL_ID_ACTIVE:
986 active = true;
987 break;
988 case ETHTOOL_ID_INACTIVE:
989 active = false;
990 break;
991 default:
992 return -EOPNOTSUPP;
993 }
994
995 mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
996 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
997 }
998
999 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1000 struct ethtool_stats *stats, u64 *data)
1001 {
1002 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1003 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1004 char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1005 int i;
1006 int err;
1007
1008 mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
1009 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1010 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
1011 data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
1012 }
1013
1014 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1015 {
1016 switch (sset) {
1017 case ETH_SS_STATS:
1018 return MLXSW_SP_PORT_HW_STATS_LEN;
1019 default:
1020 return -EOPNOTSUPP;
1021 }
1022 }
1023
1024 struct mlxsw_sp_port_link_mode {
1025 u32 mask;
1026 u32 supported;
1027 u32 advertised;
1028 u32 speed;
1029 };
1030
1031 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1032 {
1033 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1034 .supported = SUPPORTED_100baseT_Full,
1035 .advertised = ADVERTISED_100baseT_Full,
1036 .speed = 100,
1037 },
1038 {
1039 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1040 .speed = 100,
1041 },
1042 {
1043 .mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1044 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1045 .supported = SUPPORTED_1000baseKX_Full,
1046 .advertised = ADVERTISED_1000baseKX_Full,
1047 .speed = 1000,
1048 },
1049 {
1050 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1051 .supported = SUPPORTED_10000baseT_Full,
1052 .advertised = ADVERTISED_10000baseT_Full,
1053 .speed = 10000,
1054 },
1055 {
1056 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1057 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1058 .supported = SUPPORTED_10000baseKX4_Full,
1059 .advertised = ADVERTISED_10000baseKX4_Full,
1060 .speed = 10000,
1061 },
1062 {
1063 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1064 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1065 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1066 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1067 .supported = SUPPORTED_10000baseKR_Full,
1068 .advertised = ADVERTISED_10000baseKR_Full,
1069 .speed = 10000,
1070 },
1071 {
1072 .mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1073 .supported = SUPPORTED_20000baseKR2_Full,
1074 .advertised = ADVERTISED_20000baseKR2_Full,
1075 .speed = 20000,
1076 },
1077 {
1078 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1079 .supported = SUPPORTED_40000baseCR4_Full,
1080 .advertised = ADVERTISED_40000baseCR4_Full,
1081 .speed = 40000,
1082 },
1083 {
1084 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1085 .supported = SUPPORTED_40000baseKR4_Full,
1086 .advertised = ADVERTISED_40000baseKR4_Full,
1087 .speed = 40000,
1088 },
1089 {
1090 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1091 .supported = SUPPORTED_40000baseSR4_Full,
1092 .advertised = ADVERTISED_40000baseSR4_Full,
1093 .speed = 40000,
1094 },
1095 {
1096 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1097 .supported = SUPPORTED_40000baseLR4_Full,
1098 .advertised = ADVERTISED_40000baseLR4_Full,
1099 .speed = 40000,
1100 },
1101 {
1102 .mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1103 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1104 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1105 .speed = 25000,
1106 },
1107 {
1108 .mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1109 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1110 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1111 .speed = 50000,
1112 },
1113 {
1114 .mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1115 .supported = SUPPORTED_56000baseKR4_Full,
1116 .advertised = ADVERTISED_56000baseKR4_Full,
1117 .speed = 56000,
1118 },
1119 {
1120 .mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1121 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1122 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1123 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1124 .speed = 100000,
1125 },
1126 };
1127
1128 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1129
1130 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1131 {
1132 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1133 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1134 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1135 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1136 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1137 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1138 return SUPPORTED_FIBRE;
1139
1140 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1141 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1142 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1143 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1144 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1145 return SUPPORTED_Backplane;
1146 return 0;
1147 }
1148
1149 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1150 {
1151 u32 modes = 0;
1152 int i;
1153
1154 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1155 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1156 modes |= mlxsw_sp_port_link_mode[i].supported;
1157 }
1158 return modes;
1159 }
1160
1161 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1162 {
1163 u32 modes = 0;
1164 int i;
1165
1166 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1167 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1168 modes |= mlxsw_sp_port_link_mode[i].advertised;
1169 }
1170 return modes;
1171 }
1172
1173 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1174 struct ethtool_cmd *cmd)
1175 {
1176 u32 speed = SPEED_UNKNOWN;
1177 u8 duplex = DUPLEX_UNKNOWN;
1178 int i;
1179
1180 if (!carrier_ok)
1181 goto out;
1182
1183 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1184 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1185 speed = mlxsw_sp_port_link_mode[i].speed;
1186 duplex = DUPLEX_FULL;
1187 break;
1188 }
1189 }
1190 out:
1191 ethtool_cmd_speed_set(cmd, speed);
1192 cmd->duplex = duplex;
1193 }
1194
1195 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1196 {
1197 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1198 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1199 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1200 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1201 return PORT_FIBRE;
1202
1203 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1204 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1205 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1206 return PORT_DA;
1207
1208 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1209 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1210 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1211 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1212 return PORT_NONE;
1213
1214 return PORT_OTHER;
1215 }
1216
1217 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1218 struct ethtool_cmd *cmd)
1219 {
1220 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1221 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1222 char ptys_pl[MLXSW_REG_PTYS_LEN];
1223 u32 eth_proto_cap;
1224 u32 eth_proto_admin;
1225 u32 eth_proto_oper;
1226 int err;
1227
1228 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1229 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1230 if (err) {
1231 netdev_err(dev, "Failed to get proto");
1232 return err;
1233 }
1234 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1235 &eth_proto_admin, &eth_proto_oper);
1236
1237 cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1238 mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1239 SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1240 cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1241 mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1242 eth_proto_oper, cmd);
1243
1244 eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1245 cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1246 cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1247
1248 cmd->transceiver = XCVR_INTERNAL;
1249 return 0;
1250 }
1251
1252 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1253 {
1254 u32 ptys_proto = 0;
1255 int i;
1256
1257 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1258 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1259 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1260 }
1261 return ptys_proto;
1262 }
1263
1264 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1265 {
1266 u32 ptys_proto = 0;
1267 int i;
1268
1269 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1270 if (speed == mlxsw_sp_port_link_mode[i].speed)
1271 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1272 }
1273 return ptys_proto;
1274 }
1275
1276 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1277 struct ethtool_cmd *cmd)
1278 {
1279 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1280 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1281 char ptys_pl[MLXSW_REG_PTYS_LEN];
1282 u32 speed;
1283 u32 eth_proto_new;
1284 u32 eth_proto_cap;
1285 u32 eth_proto_admin;
1286 bool is_up;
1287 int err;
1288
1289 speed = ethtool_cmd_speed(cmd);
1290
1291 eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1292 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1293 mlxsw_sp_to_ptys_speed(speed);
1294
1295 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1296 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1297 if (err) {
1298 netdev_err(dev, "Failed to get proto");
1299 return err;
1300 }
1301 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1302
1303 eth_proto_new = eth_proto_new & eth_proto_cap;
1304 if (!eth_proto_new) {
1305 netdev_err(dev, "Not supported proto admin requested");
1306 return -EINVAL;
1307 }
1308 if (eth_proto_new == eth_proto_admin)
1309 return 0;
1310
1311 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1312 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1313 if (err) {
1314 netdev_err(dev, "Failed to set proto admin");
1315 return err;
1316 }
1317
1318 err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
1319 if (err) {
1320 netdev_err(dev, "Failed to get oper status");
1321 return err;
1322 }
1323 if (!is_up)
1324 return 0;
1325
1326 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1327 if (err) {
1328 netdev_err(dev, "Failed to set admin status");
1329 return err;
1330 }
1331
1332 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1333 if (err) {
1334 netdev_err(dev, "Failed to set admin status");
1335 return err;
1336 }
1337
1338 return 0;
1339 }
1340
1341 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1342 .get_drvinfo = mlxsw_sp_port_get_drvinfo,
1343 .get_link = ethtool_op_get_link,
1344 .get_strings = mlxsw_sp_port_get_strings,
1345 .set_phys_id = mlxsw_sp_port_set_phys_id,
1346 .get_ethtool_stats = mlxsw_sp_port_get_stats,
1347 .get_sset_count = mlxsw_sp_port_get_sset_count,
1348 .get_settings = mlxsw_sp_port_get_settings,
1349 .set_settings = mlxsw_sp_port_set_settings,
1350 };
1351
1352 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1353 {
1354 struct mlxsw_sp_port *mlxsw_sp_port;
1355 struct net_device *dev;
1356 bool usable;
1357 size_t bytes;
1358 int err;
1359
1360 dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
1361 if (!dev)
1362 return -ENOMEM;
1363 mlxsw_sp_port = netdev_priv(dev);
1364 mlxsw_sp_port->dev = dev;
1365 mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
1366 mlxsw_sp_port->local_port = local_port;
1367 mlxsw_sp_port->learning = 1;
1368 mlxsw_sp_port->learning_sync = 1;
1369 mlxsw_sp_port->uc_flood = 1;
1370 bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1371 mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1372 if (!mlxsw_sp_port->active_vlans) {
1373 err = -ENOMEM;
1374 goto err_port_active_vlans_alloc;
1375 }
1376 INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1377
1378 mlxsw_sp_port->pcpu_stats =
1379 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1380 if (!mlxsw_sp_port->pcpu_stats) {
1381 err = -ENOMEM;
1382 goto err_alloc_stats;
1383 }
1384
1385 dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1386 dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1387
1388 err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1389 if (err) {
1390 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1391 mlxsw_sp_port->local_port);
1392 goto err_dev_addr_init;
1393 }
1394
1395 netif_carrier_off(dev);
1396
1397 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1398 NETIF_F_HW_VLAN_CTAG_FILTER;
1399
1400 /* Each packet needs to have a Tx header (metadata) on top all other
1401 * headers.
1402 */
1403 dev->hard_header_len += MLXSW_TXHDR_LEN;
1404
1405 err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
1406 if (err) {
1407 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
1408 mlxsw_sp_port->local_port);
1409 goto err_port_module_check;
1410 }
1411
1412 if (!usable) {
1413 dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1414 mlxsw_sp_port->local_port);
1415 goto port_not_usable;
1416 }
1417
1418 err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1419 if (err) {
1420 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1421 mlxsw_sp_port->local_port);
1422 goto err_port_system_port_mapping_set;
1423 }
1424
1425 err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1426 if (err) {
1427 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1428 mlxsw_sp_port->local_port);
1429 goto err_port_swid_set;
1430 }
1431
1432 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1433 if (err) {
1434 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1435 mlxsw_sp_port->local_port);
1436 goto err_port_mtu_set;
1437 }
1438
1439 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1440 if (err)
1441 goto err_port_admin_status_set;
1442
1443 err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1444 if (err) {
1445 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1446 mlxsw_sp_port->local_port);
1447 goto err_port_buffers_init;
1448 }
1449
1450 mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1451 err = register_netdev(dev);
1452 if (err) {
1453 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1454 mlxsw_sp_port->local_port);
1455 goto err_register_netdev;
1456 }
1457
1458 err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1459 if (err)
1460 goto err_port_vlan_init;
1461
1462 mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1463 return 0;
1464
1465 err_port_vlan_init:
1466 unregister_netdev(dev);
1467 err_register_netdev:
1468 err_port_buffers_init:
1469 err_port_admin_status_set:
1470 err_port_mtu_set:
1471 err_port_swid_set:
1472 err_port_system_port_mapping_set:
1473 port_not_usable:
1474 err_port_module_check:
1475 err_dev_addr_init:
1476 free_percpu(mlxsw_sp_port->pcpu_stats);
1477 err_alloc_stats:
1478 kfree(mlxsw_sp_port->active_vlans);
1479 err_port_active_vlans_alloc:
1480 free_netdev(dev);
1481 return err;
1482 }
1483
1484 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1485 {
1486 struct net_device *dev = mlxsw_sp_port->dev;
1487 struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1488
1489 list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1490 &mlxsw_sp_port->vports_list, vport.list) {
1491 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1492
1493 /* vPorts created for VLAN devices should already be gone
1494 * by now, since we unregistered the port netdev.
1495 */
1496 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1497 mlxsw_sp_port_kill_vid(dev, 0, vid);
1498 }
1499 }
1500
1501 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1502 {
1503 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1504
1505 if (!mlxsw_sp_port)
1506 return;
1507 unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1508 mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1509 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1510 free_percpu(mlxsw_sp_port->pcpu_stats);
1511 kfree(mlxsw_sp_port->active_vlans);
1512 free_netdev(mlxsw_sp_port->dev);
1513 }
1514
1515 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1516 {
1517 int i;
1518
1519 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1520 mlxsw_sp_port_remove(mlxsw_sp, i);
1521 kfree(mlxsw_sp->ports);
1522 }
1523
1524 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1525 {
1526 size_t alloc_size;
1527 int i;
1528 int err;
1529
1530 alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1531 mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1532 if (!mlxsw_sp->ports)
1533 return -ENOMEM;
1534
1535 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1536 err = mlxsw_sp_port_create(mlxsw_sp, i);
1537 if (err)
1538 goto err_port_create;
1539 }
1540 return 0;
1541
1542 err_port_create:
1543 for (i--; i >= 1; i--)
1544 mlxsw_sp_port_remove(mlxsw_sp, i);
1545 kfree(mlxsw_sp->ports);
1546 return err;
1547 }
1548
1549 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1550 char *pude_pl, void *priv)
1551 {
1552 struct mlxsw_sp *mlxsw_sp = priv;
1553 struct mlxsw_sp_port *mlxsw_sp_port;
1554 enum mlxsw_reg_pude_oper_status status;
1555 u8 local_port;
1556
1557 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1558 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1559 if (!mlxsw_sp_port) {
1560 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1561 local_port);
1562 return;
1563 }
1564
1565 status = mlxsw_reg_pude_oper_status_get(pude_pl);
1566 if (status == MLXSW_PORT_OPER_STATUS_UP) {
1567 netdev_info(mlxsw_sp_port->dev, "link up\n");
1568 netif_carrier_on(mlxsw_sp_port->dev);
1569 } else {
1570 netdev_info(mlxsw_sp_port->dev, "link down\n");
1571 netif_carrier_off(mlxsw_sp_port->dev);
1572 }
1573 }
1574
1575 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1576 .func = mlxsw_sp_pude_event_func,
1577 .trap_id = MLXSW_TRAP_ID_PUDE,
1578 };
1579
1580 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1581 enum mlxsw_event_trap_id trap_id)
1582 {
1583 struct mlxsw_event_listener *el;
1584 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1585 int err;
1586
1587 switch (trap_id) {
1588 case MLXSW_TRAP_ID_PUDE:
1589 el = &mlxsw_sp_pude_event;
1590 break;
1591 }
1592 err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1593 if (err)
1594 return err;
1595
1596 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1597 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1598 if (err)
1599 goto err_event_trap_set;
1600
1601 return 0;
1602
1603 err_event_trap_set:
1604 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1605 return err;
1606 }
1607
1608 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1609 enum mlxsw_event_trap_id trap_id)
1610 {
1611 struct mlxsw_event_listener *el;
1612
1613 switch (trap_id) {
1614 case MLXSW_TRAP_ID_PUDE:
1615 el = &mlxsw_sp_pude_event;
1616 break;
1617 }
1618 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1619 }
1620
1621 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1622 void *priv)
1623 {
1624 struct mlxsw_sp *mlxsw_sp = priv;
1625 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1626 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1627
1628 if (unlikely(!mlxsw_sp_port)) {
1629 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1630 local_port);
1631 return;
1632 }
1633
1634 skb->dev = mlxsw_sp_port->dev;
1635
1636 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1637 u64_stats_update_begin(&pcpu_stats->syncp);
1638 pcpu_stats->rx_packets++;
1639 pcpu_stats->rx_bytes += skb->len;
1640 u64_stats_update_end(&pcpu_stats->syncp);
1641
1642 skb->protocol = eth_type_trans(skb, skb->dev);
1643 netif_receive_skb(skb);
1644 }
1645
1646 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1647 {
1648 .func = mlxsw_sp_rx_listener_func,
1649 .local_port = MLXSW_PORT_DONT_CARE,
1650 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1651 },
1652 /* Traps for specific L2 packet types, not trapped as FDB MC */
1653 {
1654 .func = mlxsw_sp_rx_listener_func,
1655 .local_port = MLXSW_PORT_DONT_CARE,
1656 .trap_id = MLXSW_TRAP_ID_STP,
1657 },
1658 {
1659 .func = mlxsw_sp_rx_listener_func,
1660 .local_port = MLXSW_PORT_DONT_CARE,
1661 .trap_id = MLXSW_TRAP_ID_LACP,
1662 },
1663 {
1664 .func = mlxsw_sp_rx_listener_func,
1665 .local_port = MLXSW_PORT_DONT_CARE,
1666 .trap_id = MLXSW_TRAP_ID_EAPOL,
1667 },
1668 {
1669 .func = mlxsw_sp_rx_listener_func,
1670 .local_port = MLXSW_PORT_DONT_CARE,
1671 .trap_id = MLXSW_TRAP_ID_LLDP,
1672 },
1673 {
1674 .func = mlxsw_sp_rx_listener_func,
1675 .local_port = MLXSW_PORT_DONT_CARE,
1676 .trap_id = MLXSW_TRAP_ID_MMRP,
1677 },
1678 {
1679 .func = mlxsw_sp_rx_listener_func,
1680 .local_port = MLXSW_PORT_DONT_CARE,
1681 .trap_id = MLXSW_TRAP_ID_MVRP,
1682 },
1683 {
1684 .func = mlxsw_sp_rx_listener_func,
1685 .local_port = MLXSW_PORT_DONT_CARE,
1686 .trap_id = MLXSW_TRAP_ID_RPVST,
1687 },
1688 {
1689 .func = mlxsw_sp_rx_listener_func,
1690 .local_port = MLXSW_PORT_DONT_CARE,
1691 .trap_id = MLXSW_TRAP_ID_DHCP,
1692 },
1693 {
1694 .func = mlxsw_sp_rx_listener_func,
1695 .local_port = MLXSW_PORT_DONT_CARE,
1696 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1697 },
1698 {
1699 .func = mlxsw_sp_rx_listener_func,
1700 .local_port = MLXSW_PORT_DONT_CARE,
1701 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1702 },
1703 {
1704 .func = mlxsw_sp_rx_listener_func,
1705 .local_port = MLXSW_PORT_DONT_CARE,
1706 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1707 },
1708 {
1709 .func = mlxsw_sp_rx_listener_func,
1710 .local_port = MLXSW_PORT_DONT_CARE,
1711 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1712 },
1713 {
1714 .func = mlxsw_sp_rx_listener_func,
1715 .local_port = MLXSW_PORT_DONT_CARE,
1716 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1717 },
1718 };
1719
1720 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1721 {
1722 char htgt_pl[MLXSW_REG_HTGT_LEN];
1723 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1724 int i;
1725 int err;
1726
1727 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1728 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1729 if (err)
1730 return err;
1731
1732 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1733 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1734 if (err)
1735 return err;
1736
1737 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1738 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1739 &mlxsw_sp_rx_listener[i],
1740 mlxsw_sp);
1741 if (err)
1742 goto err_rx_listener_register;
1743
1744 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1745 mlxsw_sp_rx_listener[i].trap_id);
1746 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1747 if (err)
1748 goto err_rx_trap_set;
1749 }
1750 return 0;
1751
1752 err_rx_trap_set:
1753 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1754 &mlxsw_sp_rx_listener[i],
1755 mlxsw_sp);
1756 err_rx_listener_register:
1757 for (i--; i >= 0; i--) {
1758 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1759 mlxsw_sp_rx_listener[i].trap_id);
1760 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1761
1762 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1763 &mlxsw_sp_rx_listener[i],
1764 mlxsw_sp);
1765 }
1766 return err;
1767 }
1768
1769 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
1770 {
1771 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1772 int i;
1773
1774 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1775 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1776 mlxsw_sp_rx_listener[i].trap_id);
1777 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1778
1779 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1780 &mlxsw_sp_rx_listener[i],
1781 mlxsw_sp);
1782 }
1783 }
1784
1785 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
1786 enum mlxsw_reg_sfgc_type type,
1787 enum mlxsw_reg_sfgc_bridge_type bridge_type)
1788 {
1789 enum mlxsw_flood_table_type table_type;
1790 enum mlxsw_sp_flood_table flood_table;
1791 char sfgc_pl[MLXSW_REG_SFGC_LEN];
1792
1793 if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
1794 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
1795 else
1796 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
1797
1798 if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
1799 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
1800 else
1801 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
1802
1803 mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
1804 flood_table);
1805 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
1806 }
1807
1808 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
1809 {
1810 int type, err;
1811
1812 for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
1813 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
1814 continue;
1815
1816 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1817 MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
1818 if (err)
1819 return err;
1820
1821 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1822 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
1823 if (err)
1824 return err;
1825 }
1826
1827 return 0;
1828 }
1829
1830 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
1831 {
1832 char slcr_pl[MLXSW_REG_SLCR_LEN];
1833
1834 mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
1835 MLXSW_REG_SLCR_LAG_HASH_DMAC |
1836 MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
1837 MLXSW_REG_SLCR_LAG_HASH_VLANID |
1838 MLXSW_REG_SLCR_LAG_HASH_SIP |
1839 MLXSW_REG_SLCR_LAG_HASH_DIP |
1840 MLXSW_REG_SLCR_LAG_HASH_SPORT |
1841 MLXSW_REG_SLCR_LAG_HASH_DPORT |
1842 MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
1843 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
1844 }
1845
1846 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
1847 const struct mlxsw_bus_info *mlxsw_bus_info)
1848 {
1849 struct mlxsw_sp *mlxsw_sp = priv;
1850 int err;
1851
1852 mlxsw_sp->core = mlxsw_core;
1853 mlxsw_sp->bus_info = mlxsw_bus_info;
1854 INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
1855 INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
1856
1857 err = mlxsw_sp_base_mac_get(mlxsw_sp);
1858 if (err) {
1859 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
1860 return err;
1861 }
1862
1863 err = mlxsw_sp_ports_create(mlxsw_sp);
1864 if (err) {
1865 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
1866 return err;
1867 }
1868
1869 err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1870 if (err) {
1871 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
1872 goto err_event_register;
1873 }
1874
1875 err = mlxsw_sp_traps_init(mlxsw_sp);
1876 if (err) {
1877 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
1878 goto err_rx_listener_register;
1879 }
1880
1881 err = mlxsw_sp_flood_init(mlxsw_sp);
1882 if (err) {
1883 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
1884 goto err_flood_init;
1885 }
1886
1887 err = mlxsw_sp_buffers_init(mlxsw_sp);
1888 if (err) {
1889 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
1890 goto err_buffers_init;
1891 }
1892
1893 err = mlxsw_sp_lag_init(mlxsw_sp);
1894 if (err) {
1895 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
1896 goto err_lag_init;
1897 }
1898
1899 err = mlxsw_sp_switchdev_init(mlxsw_sp);
1900 if (err) {
1901 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
1902 goto err_switchdev_init;
1903 }
1904
1905 return 0;
1906
1907 err_switchdev_init:
1908 err_lag_init:
1909 err_buffers_init:
1910 err_flood_init:
1911 mlxsw_sp_traps_fini(mlxsw_sp);
1912 err_rx_listener_register:
1913 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1914 err_event_register:
1915 mlxsw_sp_ports_remove(mlxsw_sp);
1916 return err;
1917 }
1918
1919 static void mlxsw_sp_fini(void *priv)
1920 {
1921 struct mlxsw_sp *mlxsw_sp = priv;
1922
1923 mlxsw_sp_switchdev_fini(mlxsw_sp);
1924 mlxsw_sp_traps_fini(mlxsw_sp);
1925 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1926 mlxsw_sp_ports_remove(mlxsw_sp);
1927 }
1928
1929 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
1930 .used_max_vepa_channels = 1,
1931 .max_vepa_channels = 0,
1932 .used_max_lag = 1,
1933 .max_lag = MLXSW_SP_LAG_MAX,
1934 .used_max_port_per_lag = 1,
1935 .max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
1936 .used_max_mid = 1,
1937 .max_mid = 7000,
1938 .used_max_pgt = 1,
1939 .max_pgt = 0,
1940 .used_max_system_port = 1,
1941 .max_system_port = 64,
1942 .used_max_vlan_groups = 1,
1943 .max_vlan_groups = 127,
1944 .used_max_regions = 1,
1945 .max_regions = 400,
1946 .used_flood_tables = 1,
1947 .used_flood_mode = 1,
1948 .flood_mode = 3,
1949 .max_fid_offset_flood_tables = 2,
1950 .fid_offset_flood_table_size = VLAN_N_VID - 1,
1951 .max_fid_flood_tables = 2,
1952 .fid_flood_table_size = MLXSW_SP_VFID_MAX,
1953 .used_max_ib_mc = 1,
1954 .max_ib_mc = 0,
1955 .used_max_pkey = 1,
1956 .max_pkey = 0,
1957 .swid_config = {
1958 {
1959 .used_type = 1,
1960 .type = MLXSW_PORT_SWID_TYPE_ETH,
1961 }
1962 },
1963 };
1964
1965 static struct mlxsw_driver mlxsw_sp_driver = {
1966 .kind = MLXSW_DEVICE_KIND_SPECTRUM,
1967 .owner = THIS_MODULE,
1968 .priv_size = sizeof(struct mlxsw_sp),
1969 .init = mlxsw_sp_init,
1970 .fini = mlxsw_sp_fini,
1971 .txhdr_construct = mlxsw_sp_txhdr_construct,
1972 .txhdr_len = MLXSW_TXHDR_LEN,
1973 .profile = &mlxsw_sp_config_profile,
1974 };
1975
1976 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
1977 {
1978 return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
1979 }
1980
1981 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
1982 {
1983 struct net_device *dev = mlxsw_sp_port->dev;
1984 int err;
1985
1986 /* When port is not bridged untagged packets are tagged with
1987 * PVID=VID=1, thereby creating an implicit VLAN interface in
1988 * the device. Remove it and let bridge code take care of its
1989 * own VLANs.
1990 */
1991 err = mlxsw_sp_port_kill_vid(dev, 0, 1);
1992 if (err)
1993 netdev_err(dev, "Failed to remove VID 1\n");
1994
1995 return err;
1996 }
1997
1998 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
1999 {
2000 struct net_device *dev = mlxsw_sp_port->dev;
2001 int err;
2002
2003 /* Add implicit VLAN interface in the device, so that untagged
2004 * packets will be classified to the default vFID.
2005 */
2006 err = mlxsw_sp_port_add_vid(dev, 0, 1);
2007 if (err)
2008 netdev_err(dev, "Failed to add VID 1\n");
2009
2010 return err;
2011 }
2012
2013 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2014 struct net_device *br_dev)
2015 {
2016 return !mlxsw_sp->master_bridge.dev ||
2017 mlxsw_sp->master_bridge.dev == br_dev;
2018 }
2019
2020 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2021 struct net_device *br_dev)
2022 {
2023 mlxsw_sp->master_bridge.dev = br_dev;
2024 mlxsw_sp->master_bridge.ref_count++;
2025 }
2026
2027 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2028 struct net_device *br_dev)
2029 {
2030 if (--mlxsw_sp->master_bridge.ref_count == 0)
2031 mlxsw_sp->master_bridge.dev = NULL;
2032 }
2033
2034 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2035 {
2036 char sldr_pl[MLXSW_REG_SLDR_LEN];
2037
2038 mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2039 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2040 }
2041
2042 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2043 {
2044 char sldr_pl[MLXSW_REG_SLDR_LEN];
2045
2046 mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2047 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2048 }
2049
2050 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2051 u16 lag_id, u8 port_index)
2052 {
2053 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2054 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2055
2056 mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2057 lag_id, port_index);
2058 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2059 }
2060
2061 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2062 u16 lag_id)
2063 {
2064 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2065 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2066
2067 mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2068 lag_id);
2069 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2070 }
2071
2072 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2073 u16 lag_id)
2074 {
2075 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2076 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2077
2078 mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2079 lag_id);
2080 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2081 }
2082
2083 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2084 u16 lag_id)
2085 {
2086 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2087 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2088
2089 mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2090 lag_id);
2091 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2092 }
2093
2094 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2095 struct net_device *lag_dev,
2096 u16 *p_lag_id)
2097 {
2098 struct mlxsw_sp_upper *lag;
2099 int free_lag_id = -1;
2100 int i;
2101
2102 for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2103 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2104 if (lag->ref_count) {
2105 if (lag->dev == lag_dev) {
2106 *p_lag_id = i;
2107 return 0;
2108 }
2109 } else if (free_lag_id < 0) {
2110 free_lag_id = i;
2111 }
2112 }
2113 if (free_lag_id < 0)
2114 return -EBUSY;
2115 *p_lag_id = free_lag_id;
2116 return 0;
2117 }
2118
2119 static bool
2120 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2121 struct net_device *lag_dev,
2122 struct netdev_lag_upper_info *lag_upper_info)
2123 {
2124 u16 lag_id;
2125
2126 if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2127 return false;
2128 if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2129 return false;
2130 return true;
2131 }
2132
2133 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2134 u16 lag_id, u8 *p_port_index)
2135 {
2136 int i;
2137
2138 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2139 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2140 *p_port_index = i;
2141 return 0;
2142 }
2143 }
2144 return -EBUSY;
2145 }
2146
2147 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2148 struct net_device *lag_dev)
2149 {
2150 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2151 struct mlxsw_sp_upper *lag;
2152 u16 lag_id;
2153 u8 port_index;
2154 int err;
2155
2156 err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2157 if (err)
2158 return err;
2159 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2160 if (!lag->ref_count) {
2161 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2162 if (err)
2163 return err;
2164 lag->dev = lag_dev;
2165 }
2166
2167 err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2168 if (err)
2169 return err;
2170 err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2171 if (err)
2172 goto err_col_port_add;
2173 err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2174 if (err)
2175 goto err_col_port_enable;
2176
2177 mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2178 mlxsw_sp_port->local_port);
2179 mlxsw_sp_port->lag_id = lag_id;
2180 mlxsw_sp_port->lagged = 1;
2181 lag->ref_count++;
2182 return 0;
2183
2184 err_col_port_add:
2185 if (!lag->ref_count)
2186 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2187 err_col_port_enable:
2188 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2189 return err;
2190 }
2191
2192 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2193 struct net_device *lag_dev)
2194 {
2195 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2196 struct mlxsw_sp_upper *lag;
2197 u16 lag_id = mlxsw_sp_port->lag_id;
2198 int err;
2199
2200 if (!mlxsw_sp_port->lagged)
2201 return 0;
2202 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2203 WARN_ON(lag->ref_count == 0);
2204
2205 err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2206 if (err)
2207 return err;
2208 err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2209 if (err)
2210 return err;
2211
2212 if (lag->ref_count == 1) {
2213 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2214 if (err)
2215 return err;
2216 }
2217
2218 mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2219 mlxsw_sp_port->local_port);
2220 mlxsw_sp_port->lagged = 0;
2221 lag->ref_count--;
2222 return 0;
2223 }
2224
2225 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2226 u16 lag_id)
2227 {
2228 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2229 char sldr_pl[MLXSW_REG_SLDR_LEN];
2230
2231 mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2232 mlxsw_sp_port->local_port);
2233 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2234 }
2235
2236 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2237 u16 lag_id)
2238 {
2239 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2240 char sldr_pl[MLXSW_REG_SLDR_LEN];
2241
2242 mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2243 mlxsw_sp_port->local_port);
2244 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2245 }
2246
2247 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2248 bool lag_tx_enabled)
2249 {
2250 if (lag_tx_enabled)
2251 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2252 mlxsw_sp_port->lag_id);
2253 else
2254 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2255 mlxsw_sp_port->lag_id);
2256 }
2257
2258 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2259 struct netdev_lag_lower_state_info *info)
2260 {
2261 return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2262 }
2263
2264 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2265 struct net_device *br_dev);
2266
2267 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2268 struct net_device *vlan_dev)
2269 {
2270 struct mlxsw_sp_port *mlxsw_sp_vport;
2271 u16 vid = vlan_dev_vlan_id(vlan_dev);
2272
2273 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2274 if (!mlxsw_sp_vport) {
2275 WARN_ON(!mlxsw_sp_vport);
2276 return -EINVAL;
2277 }
2278
2279 mlxsw_sp_vport->dev = vlan_dev;
2280
2281 return 0;
2282 }
2283
2284 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2285 struct net_device *vlan_dev)
2286 {
2287 struct mlxsw_sp_port *mlxsw_sp_vport;
2288 u16 vid = vlan_dev_vlan_id(vlan_dev);
2289
2290 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2291 if (!mlxsw_sp_vport) {
2292 WARN_ON(!mlxsw_sp_vport);
2293 return -EINVAL;
2294 }
2295
2296 /* When removing a VLAN device while still bridged we should first
2297 * remove it from the bridge, as we receive the bridge's notification
2298 * when the vPort is already gone.
2299 */
2300 if (mlxsw_sp_vport->bridged) {
2301 struct net_device *br_dev;
2302
2303 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2304 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev);
2305 }
2306
2307 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2308
2309 return 0;
2310 }
2311
2312 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2313 unsigned long event, void *ptr)
2314 {
2315 struct netdev_notifier_changeupper_info *info;
2316 struct mlxsw_sp_port *mlxsw_sp_port;
2317 struct net_device *upper_dev;
2318 struct mlxsw_sp *mlxsw_sp;
2319 int err;
2320
2321 mlxsw_sp_port = netdev_priv(dev);
2322 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2323 info = ptr;
2324
2325 switch (event) {
2326 case NETDEV_PRECHANGEUPPER:
2327 upper_dev = info->upper_dev;
2328 if (!info->master || !info->linking)
2329 break;
2330 /* HW limitation forbids to put ports to multiple bridges. */
2331 if (netif_is_bridge_master(upper_dev) &&
2332 !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2333 return NOTIFY_BAD;
2334 if (netif_is_lag_master(upper_dev) &&
2335 !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2336 info->upper_info))
2337 return NOTIFY_BAD;
2338 break;
2339 case NETDEV_CHANGEUPPER:
2340 upper_dev = info->upper_dev;
2341 if (is_vlan_dev(upper_dev)) {
2342 if (info->linking) {
2343 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2344 upper_dev);
2345 if (err) {
2346 netdev_err(dev, "Failed to link VLAN device\n");
2347 return NOTIFY_BAD;
2348 }
2349 } else {
2350 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2351 upper_dev);
2352 if (err) {
2353 netdev_err(dev, "Failed to unlink VLAN device\n");
2354 return NOTIFY_BAD;
2355 }
2356 }
2357 } else if (netif_is_bridge_master(upper_dev)) {
2358 if (info->linking) {
2359 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2360 if (err) {
2361 netdev_err(dev, "Failed to join bridge\n");
2362 return NOTIFY_BAD;
2363 }
2364 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2365 mlxsw_sp_port->bridged = 1;
2366 } else {
2367 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
2368 mlxsw_sp_port->bridged = 0;
2369 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2370 if (err) {
2371 netdev_err(dev, "Failed to leave bridge\n");
2372 return NOTIFY_BAD;
2373 }
2374 }
2375 } else if (netif_is_lag_master(upper_dev)) {
2376 if (info->linking) {
2377 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2378 upper_dev);
2379 if (err) {
2380 netdev_err(dev, "Failed to join link aggregation\n");
2381 return NOTIFY_BAD;
2382 }
2383 } else {
2384 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2385 upper_dev);
2386 if (err) {
2387 netdev_err(dev, "Failed to leave link aggregation\n");
2388 return NOTIFY_BAD;
2389 }
2390 }
2391 }
2392 break;
2393 }
2394
2395 return NOTIFY_DONE;
2396 }
2397
2398 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2399 unsigned long event, void *ptr)
2400 {
2401 struct netdev_notifier_changelowerstate_info *info;
2402 struct mlxsw_sp_port *mlxsw_sp_port;
2403 int err;
2404
2405 mlxsw_sp_port = netdev_priv(dev);
2406 info = ptr;
2407
2408 switch (event) {
2409 case NETDEV_CHANGELOWERSTATE:
2410 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2411 err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2412 info->lower_state_info);
2413 if (err)
2414 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2415 }
2416 break;
2417 }
2418
2419 return NOTIFY_DONE;
2420 }
2421
2422 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2423 unsigned long event, void *ptr)
2424 {
2425 switch (event) {
2426 case NETDEV_PRECHANGEUPPER:
2427 case NETDEV_CHANGEUPPER:
2428 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2429 case NETDEV_CHANGELOWERSTATE:
2430 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2431 }
2432
2433 return NOTIFY_DONE;
2434 }
2435
2436 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2437 unsigned long event, void *ptr)
2438 {
2439 struct net_device *dev;
2440 struct list_head *iter;
2441 int ret;
2442
2443 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2444 if (mlxsw_sp_port_dev_check(dev)) {
2445 ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2446 if (ret == NOTIFY_BAD)
2447 return ret;
2448 }
2449 }
2450
2451 return NOTIFY_DONE;
2452 }
2453
2454 static struct mlxsw_sp_vfid *
2455 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2456 const struct net_device *br_dev)
2457 {
2458 struct mlxsw_sp_vfid *vfid;
2459
2460 list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2461 if (vfid->br_dev == br_dev)
2462 return vfid;
2463 }
2464
2465 return NULL;
2466 }
2467
2468 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2469 {
2470 return vfid - MLXSW_SP_VFID_PORT_MAX;
2471 }
2472
2473 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2474 {
2475 return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2476 }
2477
2478 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2479 {
2480 return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2481 MLXSW_SP_VFID_BR_MAX);
2482 }
2483
2484 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2485 struct net_device *br_dev)
2486 {
2487 struct device *dev = mlxsw_sp->bus_info->dev;
2488 struct mlxsw_sp_vfid *vfid;
2489 u16 n_vfid;
2490 int err;
2491
2492 n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2493 if (n_vfid == MLXSW_SP_VFID_MAX) {
2494 dev_err(dev, "No available vFIDs\n");
2495 return ERR_PTR(-ERANGE);
2496 }
2497
2498 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2499 if (err) {
2500 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2501 return ERR_PTR(err);
2502 }
2503
2504 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2505 if (!vfid)
2506 goto err_allocate_vfid;
2507
2508 vfid->vfid = n_vfid;
2509 vfid->br_dev = br_dev;
2510
2511 list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2512 set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2513
2514 return vfid;
2515
2516 err_allocate_vfid:
2517 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2518 return ERR_PTR(-ENOMEM);
2519 }
2520
2521 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2522 struct mlxsw_sp_vfid *vfid)
2523 {
2524 u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2525
2526 clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2527 list_del(&vfid->list);
2528
2529 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2530
2531 kfree(vfid);
2532 }
2533
2534 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2535 struct net_device *br_dev)
2536 {
2537 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2538 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2539 struct net_device *dev = mlxsw_sp_vport->dev;
2540 struct mlxsw_sp_vfid *vfid, *new_vfid;
2541 int err;
2542
2543 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2544 if (!vfid) {
2545 WARN_ON(!vfid);
2546 return -EINVAL;
2547 }
2548
2549 /* We need a vFID to go back to after leaving the bridge's vFID. */
2550 new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2551 if (!new_vfid) {
2552 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2553 if (IS_ERR(new_vfid)) {
2554 netdev_err(dev, "Failed to create vFID for VID=%d\n",
2555 vid);
2556 return PTR_ERR(new_vfid);
2557 }
2558 }
2559
2560 /* Invalidate existing {Port, VID} to vFID mapping and create a new
2561 * one for the new vFID.
2562 */
2563 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2564 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2565 false,
2566 mlxsw_sp_vfid_to_fid(vfid->vfid),
2567 vid);
2568 if (err) {
2569 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2570 vfid->vfid);
2571 goto err_port_vid_to_fid_invalidate;
2572 }
2573
2574 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2575 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2576 true,
2577 mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2578 vid);
2579 if (err) {
2580 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2581 new_vfid->vfid);
2582 goto err_port_vid_to_fid_validate;
2583 }
2584
2585 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2586 if (err) {
2587 netdev_err(dev, "Failed to disable learning\n");
2588 goto err_port_vid_learning_set;
2589 }
2590
2591 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2592 false);
2593 if (err) {
2594 netdev_err(dev, "Failed clear to clear flooding\n");
2595 goto err_vport_flood_set;
2596 }
2597
2598 /* Switch between the vFIDs and destroy the old one if needed. */
2599 new_vfid->nr_vports++;
2600 mlxsw_sp_vport->vport.vfid = new_vfid;
2601 vfid->nr_vports--;
2602 if (!vfid->nr_vports)
2603 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2604
2605 mlxsw_sp_vport->learning = 0;
2606 mlxsw_sp_vport->learning_sync = 0;
2607 mlxsw_sp_vport->uc_flood = 0;
2608 mlxsw_sp_vport->bridged = 0;
2609
2610 return 0;
2611
2612 err_vport_flood_set:
2613 err_port_vid_learning_set:
2614 err_port_vid_to_fid_validate:
2615 err_port_vid_to_fid_invalidate:
2616 /* Rollback vFID only if new. */
2617 if (!new_vfid->nr_vports)
2618 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
2619 return err;
2620 }
2621
2622 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
2623 struct net_device *br_dev)
2624 {
2625 struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
2626 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2627 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2628 struct net_device *dev = mlxsw_sp_vport->dev;
2629 struct mlxsw_sp_vfid *vfid;
2630 int err;
2631
2632 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2633 if (!vfid) {
2634 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
2635 if (IS_ERR(vfid)) {
2636 netdev_err(dev, "Failed to create bridge vFID\n");
2637 return PTR_ERR(vfid);
2638 }
2639 }
2640
2641 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
2642 if (err) {
2643 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
2644 vfid->vfid);
2645 goto err_port_flood_set;
2646 }
2647
2648 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
2649 if (err) {
2650 netdev_err(dev, "Failed to enable learning\n");
2651 goto err_port_vid_learning_set;
2652 }
2653
2654 /* We need to invalidate existing {Port, VID} to vFID mapping and
2655 * create a new one for the bridge's vFID.
2656 */
2657 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2658 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2659 false,
2660 mlxsw_sp_vfid_to_fid(old_vfid->vfid),
2661 vid);
2662 if (err) {
2663 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2664 old_vfid->vfid);
2665 goto err_port_vid_to_fid_invalidate;
2666 }
2667
2668 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2669 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2670 true,
2671 mlxsw_sp_vfid_to_fid(vfid->vfid),
2672 vid);
2673 if (err) {
2674 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2675 vfid->vfid);
2676 goto err_port_vid_to_fid_validate;
2677 }
2678
2679 /* Switch between the vFIDs and destroy the old one if needed. */
2680 vfid->nr_vports++;
2681 mlxsw_sp_vport->vport.vfid = vfid;
2682 old_vfid->nr_vports--;
2683 if (!old_vfid->nr_vports)
2684 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
2685
2686 mlxsw_sp_vport->learning = 1;
2687 mlxsw_sp_vport->learning_sync = 1;
2688 mlxsw_sp_vport->uc_flood = 1;
2689 mlxsw_sp_vport->bridged = 1;
2690
2691 return 0;
2692
2693 err_port_vid_to_fid_validate:
2694 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2695 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
2696 mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
2697 err_port_vid_to_fid_invalidate:
2698 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2699 err_port_vid_learning_set:
2700 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
2701 err_port_flood_set:
2702 if (!vfid->nr_vports)
2703 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2704 return err;
2705 }
2706
2707 static bool
2708 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
2709 const struct net_device *br_dev)
2710 {
2711 struct mlxsw_sp_port *mlxsw_sp_vport;
2712
2713 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2714 vport.list) {
2715 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
2716 return false;
2717 }
2718
2719 return true;
2720 }
2721
2722 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
2723 unsigned long event, void *ptr,
2724 u16 vid)
2725 {
2726 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2727 struct netdev_notifier_changeupper_info *info = ptr;
2728 struct mlxsw_sp_port *mlxsw_sp_vport;
2729 struct net_device *upper_dev;
2730 int err;
2731
2732 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2733
2734 switch (event) {
2735 case NETDEV_PRECHANGEUPPER:
2736 upper_dev = info->upper_dev;
2737 if (!info->master || !info->linking)
2738 break;
2739 if (!netif_is_bridge_master(upper_dev))
2740 return NOTIFY_BAD;
2741 /* We can't have multiple VLAN interfaces configured on
2742 * the same port and being members in the same bridge.
2743 */
2744 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
2745 upper_dev))
2746 return NOTIFY_BAD;
2747 break;
2748 case NETDEV_CHANGEUPPER:
2749 upper_dev = info->upper_dev;
2750 if (!info->master)
2751 break;
2752 if (info->linking) {
2753 if (!mlxsw_sp_vport) {
2754 WARN_ON(!mlxsw_sp_vport);
2755 return NOTIFY_BAD;
2756 }
2757 err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
2758 upper_dev);
2759 if (err) {
2760 netdev_err(dev, "Failed to join bridge\n");
2761 return NOTIFY_BAD;
2762 }
2763 } else {
2764 /* We ignore bridge's unlinking notifications if vPort
2765 * is gone, since we already left the bridge when the
2766 * VLAN device was unlinked from the real device.
2767 */
2768 if (!mlxsw_sp_vport)
2769 return NOTIFY_DONE;
2770 err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
2771 upper_dev);
2772 if (err) {
2773 netdev_err(dev, "Failed to leave bridge\n");
2774 return NOTIFY_BAD;
2775 }
2776 }
2777 }
2778
2779 return NOTIFY_DONE;
2780 }
2781
2782 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
2783 unsigned long event, void *ptr,
2784 u16 vid)
2785 {
2786 struct net_device *dev;
2787 struct list_head *iter;
2788 int ret;
2789
2790 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2791 if (mlxsw_sp_port_dev_check(dev)) {
2792 ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
2793 vid);
2794 if (ret == NOTIFY_BAD)
2795 return ret;
2796 }
2797 }
2798
2799 return NOTIFY_DONE;
2800 }
2801
2802 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
2803 unsigned long event, void *ptr)
2804 {
2805 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
2806 u16 vid = vlan_dev_vlan_id(vlan_dev);
2807
2808 if (mlxsw_sp_port_dev_check(real_dev))
2809 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
2810 vid);
2811 else if (netif_is_lag_master(real_dev))
2812 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
2813 vid);
2814
2815 return NOTIFY_DONE;
2816 }
2817
2818 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
2819 unsigned long event, void *ptr)
2820 {
2821 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2822
2823 if (mlxsw_sp_port_dev_check(dev))
2824 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
2825
2826 if (netif_is_lag_master(dev))
2827 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
2828
2829 if (is_vlan_dev(dev))
2830 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
2831
2832 return NOTIFY_DONE;
2833 }
2834
2835 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
2836 .notifier_call = mlxsw_sp_netdevice_event,
2837 };
2838
2839 static int __init mlxsw_sp_module_init(void)
2840 {
2841 int err;
2842
2843 register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2844 err = mlxsw_core_driver_register(&mlxsw_sp_driver);
2845 if (err)
2846 goto err_core_driver_register;
2847 return 0;
2848
2849 err_core_driver_register:
2850 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2851 return err;
2852 }
2853
2854 static void __exit mlxsw_sp_module_exit(void)
2855 {
2856 mlxsw_core_driver_unregister(&mlxsw_sp_driver);
2857 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2858 }
2859
2860 module_init(mlxsw_sp_module_init);
2861 module_exit(mlxsw_sp_module_exit);
2862
2863 MODULE_LICENSE("Dual BSD/GPL");
2864 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
2865 MODULE_DESCRIPTION("Mellanox Spectrum driver");
2866 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);
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