projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
ACPI / util: cast data to u64 before shifting to fix sign extension
[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 <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 bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1368 mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1369 if (!mlxsw_sp_port->active_vlans) {
1370 err = -ENOMEM;
1371 goto err_port_active_vlans_alloc;
1372 }
1373 mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
1374 if (!mlxsw_sp_port->untagged_vlans) {
1375 err = -ENOMEM;
1376 goto err_port_untagged_vlans_alloc;
1377 }
1378 INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1379
1380 mlxsw_sp_port->pcpu_stats =
1381 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1382 if (!mlxsw_sp_port->pcpu_stats) {
1383 err = -ENOMEM;
1384 goto err_alloc_stats;
1385 }
1386
1387 dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1388 dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1389
1390 err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1391 if (err) {
1392 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1393 mlxsw_sp_port->local_port);
1394 goto err_dev_addr_init;
1395 }
1396
1397 netif_carrier_off(dev);
1398
1399 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1400 NETIF_F_HW_VLAN_CTAG_FILTER;
1401
1402 /* Each packet needs to have a Tx header (metadata) on top all other
1403 * headers.
1404 */
1405 dev->hard_header_len += MLXSW_TXHDR_LEN;
1406
1407 err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
1408 if (err) {
1409 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
1410 mlxsw_sp_port->local_port);
1411 goto err_port_module_check;
1412 }
1413
1414 if (!usable) {
1415 dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1416 mlxsw_sp_port->local_port);
1417 goto port_not_usable;
1418 }
1419
1420 err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1421 if (err) {
1422 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1423 mlxsw_sp_port->local_port);
1424 goto err_port_system_port_mapping_set;
1425 }
1426
1427 err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1428 if (err) {
1429 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1430 mlxsw_sp_port->local_port);
1431 goto err_port_swid_set;
1432 }
1433
1434 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1435 if (err) {
1436 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1437 mlxsw_sp_port->local_port);
1438 goto err_port_mtu_set;
1439 }
1440
1441 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1442 if (err)
1443 goto err_port_admin_status_set;
1444
1445 err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1446 if (err) {
1447 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1448 mlxsw_sp_port->local_port);
1449 goto err_port_buffers_init;
1450 }
1451
1452 mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1453 err = register_netdev(dev);
1454 if (err) {
1455 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1456 mlxsw_sp_port->local_port);
1457 goto err_register_netdev;
1458 }
1459
1460 err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1461 if (err)
1462 goto err_port_vlan_init;
1463
1464 mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1465 return 0;
1466
1467 err_port_vlan_init:
1468 unregister_netdev(dev);
1469 err_register_netdev:
1470 err_port_buffers_init:
1471 err_port_admin_status_set:
1472 err_port_mtu_set:
1473 err_port_swid_set:
1474 err_port_system_port_mapping_set:
1475 port_not_usable:
1476 err_port_module_check:
1477 err_dev_addr_init:
1478 free_percpu(mlxsw_sp_port->pcpu_stats);
1479 err_alloc_stats:
1480 kfree(mlxsw_sp_port->untagged_vlans);
1481 err_port_untagged_vlans_alloc:
1482 kfree(mlxsw_sp_port->active_vlans);
1483 err_port_active_vlans_alloc:
1484 free_netdev(dev);
1485 return err;
1486 }
1487
1488 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1489 {
1490 struct net_device *dev = mlxsw_sp_port->dev;
1491 struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1492
1493 list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1494 &mlxsw_sp_port->vports_list, vport.list) {
1495 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1496
1497 /* vPorts created for VLAN devices should already be gone
1498 * by now, since we unregistered the port netdev.
1499 */
1500 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1501 mlxsw_sp_port_kill_vid(dev, 0, vid);
1502 }
1503 }
1504
1505 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1506 {
1507 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1508
1509 if (!mlxsw_sp_port)
1510 return;
1511 unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1512 mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1513 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1514 free_percpu(mlxsw_sp_port->pcpu_stats);
1515 kfree(mlxsw_sp_port->untagged_vlans);
1516 kfree(mlxsw_sp_port->active_vlans);
1517 free_netdev(mlxsw_sp_port->dev);
1518 }
1519
1520 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1521 {
1522 int i;
1523
1524 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1525 mlxsw_sp_port_remove(mlxsw_sp, i);
1526 kfree(mlxsw_sp->ports);
1527 }
1528
1529 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1530 {
1531 size_t alloc_size;
1532 int i;
1533 int err;
1534
1535 alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1536 mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1537 if (!mlxsw_sp->ports)
1538 return -ENOMEM;
1539
1540 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1541 err = mlxsw_sp_port_create(mlxsw_sp, i);
1542 if (err)
1543 goto err_port_create;
1544 }
1545 return 0;
1546
1547 err_port_create:
1548 for (i--; i >= 1; i--)
1549 mlxsw_sp_port_remove(mlxsw_sp, i);
1550 kfree(mlxsw_sp->ports);
1551 return err;
1552 }
1553
1554 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1555 char *pude_pl, void *priv)
1556 {
1557 struct mlxsw_sp *mlxsw_sp = priv;
1558 struct mlxsw_sp_port *mlxsw_sp_port;
1559 enum mlxsw_reg_pude_oper_status status;
1560 u8 local_port;
1561
1562 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1563 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1564 if (!mlxsw_sp_port) {
1565 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1566 local_port);
1567 return;
1568 }
1569
1570 status = mlxsw_reg_pude_oper_status_get(pude_pl);
1571 if (status == MLXSW_PORT_OPER_STATUS_UP) {
1572 netdev_info(mlxsw_sp_port->dev, "link up\n");
1573 netif_carrier_on(mlxsw_sp_port->dev);
1574 } else {
1575 netdev_info(mlxsw_sp_port->dev, "link down\n");
1576 netif_carrier_off(mlxsw_sp_port->dev);
1577 }
1578 }
1579
1580 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1581 .func = mlxsw_sp_pude_event_func,
1582 .trap_id = MLXSW_TRAP_ID_PUDE,
1583 };
1584
1585 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1586 enum mlxsw_event_trap_id trap_id)
1587 {
1588 struct mlxsw_event_listener *el;
1589 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1590 int err;
1591
1592 switch (trap_id) {
1593 case MLXSW_TRAP_ID_PUDE:
1594 el = &mlxsw_sp_pude_event;
1595 break;
1596 }
1597 err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1598 if (err)
1599 return err;
1600
1601 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1602 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1603 if (err)
1604 goto err_event_trap_set;
1605
1606 return 0;
1607
1608 err_event_trap_set:
1609 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1610 return err;
1611 }
1612
1613 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1614 enum mlxsw_event_trap_id trap_id)
1615 {
1616 struct mlxsw_event_listener *el;
1617
1618 switch (trap_id) {
1619 case MLXSW_TRAP_ID_PUDE:
1620 el = &mlxsw_sp_pude_event;
1621 break;
1622 }
1623 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1624 }
1625
1626 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1627 void *priv)
1628 {
1629 struct mlxsw_sp *mlxsw_sp = priv;
1630 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1631 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1632
1633 if (unlikely(!mlxsw_sp_port)) {
1634 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1635 local_port);
1636 return;
1637 }
1638
1639 skb->dev = mlxsw_sp_port->dev;
1640
1641 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1642 u64_stats_update_begin(&pcpu_stats->syncp);
1643 pcpu_stats->rx_packets++;
1644 pcpu_stats->rx_bytes += skb->len;
1645 u64_stats_update_end(&pcpu_stats->syncp);
1646
1647 skb->protocol = eth_type_trans(skb, skb->dev);
1648 netif_receive_skb(skb);
1649 }
1650
1651 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1652 {
1653 .func = mlxsw_sp_rx_listener_func,
1654 .local_port = MLXSW_PORT_DONT_CARE,
1655 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1656 },
1657 /* Traps for specific L2 packet types, not trapped as FDB MC */
1658 {
1659 .func = mlxsw_sp_rx_listener_func,
1660 .local_port = MLXSW_PORT_DONT_CARE,
1661 .trap_id = MLXSW_TRAP_ID_STP,
1662 },
1663 {
1664 .func = mlxsw_sp_rx_listener_func,
1665 .local_port = MLXSW_PORT_DONT_CARE,
1666 .trap_id = MLXSW_TRAP_ID_LACP,
1667 },
1668 {
1669 .func = mlxsw_sp_rx_listener_func,
1670 .local_port = MLXSW_PORT_DONT_CARE,
1671 .trap_id = MLXSW_TRAP_ID_EAPOL,
1672 },
1673 {
1674 .func = mlxsw_sp_rx_listener_func,
1675 .local_port = MLXSW_PORT_DONT_CARE,
1676 .trap_id = MLXSW_TRAP_ID_LLDP,
1677 },
1678 {
1679 .func = mlxsw_sp_rx_listener_func,
1680 .local_port = MLXSW_PORT_DONT_CARE,
1681 .trap_id = MLXSW_TRAP_ID_MMRP,
1682 },
1683 {
1684 .func = mlxsw_sp_rx_listener_func,
1685 .local_port = MLXSW_PORT_DONT_CARE,
1686 .trap_id = MLXSW_TRAP_ID_MVRP,
1687 },
1688 {
1689 .func = mlxsw_sp_rx_listener_func,
1690 .local_port = MLXSW_PORT_DONT_CARE,
1691 .trap_id = MLXSW_TRAP_ID_RPVST,
1692 },
1693 {
1694 .func = mlxsw_sp_rx_listener_func,
1695 .local_port = MLXSW_PORT_DONT_CARE,
1696 .trap_id = MLXSW_TRAP_ID_DHCP,
1697 },
1698 {
1699 .func = mlxsw_sp_rx_listener_func,
1700 .local_port = MLXSW_PORT_DONT_CARE,
1701 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1702 },
1703 {
1704 .func = mlxsw_sp_rx_listener_func,
1705 .local_port = MLXSW_PORT_DONT_CARE,
1706 .trap_id = MLXSW_TRAP_ID_IGMP_V1_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_REPORT,
1712 },
1713 {
1714 .func = mlxsw_sp_rx_listener_func,
1715 .local_port = MLXSW_PORT_DONT_CARE,
1716 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1717 },
1718 {
1719 .func = mlxsw_sp_rx_listener_func,
1720 .local_port = MLXSW_PORT_DONT_CARE,
1721 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1722 },
1723 };
1724
1725 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1726 {
1727 char htgt_pl[MLXSW_REG_HTGT_LEN];
1728 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1729 int i;
1730 int err;
1731
1732 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1733 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1734 if (err)
1735 return err;
1736
1737 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1738 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1739 if (err)
1740 return err;
1741
1742 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1743 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1744 &mlxsw_sp_rx_listener[i],
1745 mlxsw_sp);
1746 if (err)
1747 goto err_rx_listener_register;
1748
1749 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1750 mlxsw_sp_rx_listener[i].trap_id);
1751 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1752 if (err)
1753 goto err_rx_trap_set;
1754 }
1755 return 0;
1756
1757 err_rx_trap_set:
1758 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1759 &mlxsw_sp_rx_listener[i],
1760 mlxsw_sp);
1761 err_rx_listener_register:
1762 for (i--; i >= 0; i--) {
1763 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1764 mlxsw_sp_rx_listener[i].trap_id);
1765 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1766
1767 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1768 &mlxsw_sp_rx_listener[i],
1769 mlxsw_sp);
1770 }
1771 return err;
1772 }
1773
1774 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
1775 {
1776 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1777 int i;
1778
1779 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1780 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1781 mlxsw_sp_rx_listener[i].trap_id);
1782 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1783
1784 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1785 &mlxsw_sp_rx_listener[i],
1786 mlxsw_sp);
1787 }
1788 }
1789
1790 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
1791 enum mlxsw_reg_sfgc_type type,
1792 enum mlxsw_reg_sfgc_bridge_type bridge_type)
1793 {
1794 enum mlxsw_flood_table_type table_type;
1795 enum mlxsw_sp_flood_table flood_table;
1796 char sfgc_pl[MLXSW_REG_SFGC_LEN];
1797
1798 if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
1799 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
1800 else
1801 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
1802
1803 if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
1804 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
1805 else
1806 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
1807
1808 mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
1809 flood_table);
1810 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
1811 }
1812
1813 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
1814 {
1815 int type, err;
1816
1817 for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
1818 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
1819 continue;
1820
1821 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1822 MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
1823 if (err)
1824 return err;
1825
1826 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1827 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
1828 if (err)
1829 return err;
1830 }
1831
1832 return 0;
1833 }
1834
1835 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
1836 {
1837 char slcr_pl[MLXSW_REG_SLCR_LEN];
1838
1839 mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
1840 MLXSW_REG_SLCR_LAG_HASH_DMAC |
1841 MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
1842 MLXSW_REG_SLCR_LAG_HASH_VLANID |
1843 MLXSW_REG_SLCR_LAG_HASH_SIP |
1844 MLXSW_REG_SLCR_LAG_HASH_DIP |
1845 MLXSW_REG_SLCR_LAG_HASH_SPORT |
1846 MLXSW_REG_SLCR_LAG_HASH_DPORT |
1847 MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
1848 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
1849 }
1850
1851 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
1852 const struct mlxsw_bus_info *mlxsw_bus_info)
1853 {
1854 struct mlxsw_sp *mlxsw_sp = priv;
1855 int err;
1856
1857 mlxsw_sp->core = mlxsw_core;
1858 mlxsw_sp->bus_info = mlxsw_bus_info;
1859 INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
1860 INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
1861 INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
1862
1863 err = mlxsw_sp_base_mac_get(mlxsw_sp);
1864 if (err) {
1865 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
1866 return err;
1867 }
1868
1869 err = mlxsw_sp_ports_create(mlxsw_sp);
1870 if (err) {
1871 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
1872 return err;
1873 }
1874
1875 err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1876 if (err) {
1877 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
1878 goto err_event_register;
1879 }
1880
1881 err = mlxsw_sp_traps_init(mlxsw_sp);
1882 if (err) {
1883 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
1884 goto err_rx_listener_register;
1885 }
1886
1887 err = mlxsw_sp_flood_init(mlxsw_sp);
1888 if (err) {
1889 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
1890 goto err_flood_init;
1891 }
1892
1893 err = mlxsw_sp_buffers_init(mlxsw_sp);
1894 if (err) {
1895 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
1896 goto err_buffers_init;
1897 }
1898
1899 err = mlxsw_sp_lag_init(mlxsw_sp);
1900 if (err) {
1901 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
1902 goto err_lag_init;
1903 }
1904
1905 err = mlxsw_sp_switchdev_init(mlxsw_sp);
1906 if (err) {
1907 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
1908 goto err_switchdev_init;
1909 }
1910
1911 return 0;
1912
1913 err_switchdev_init:
1914 err_lag_init:
1915 err_buffers_init:
1916 err_flood_init:
1917 mlxsw_sp_traps_fini(mlxsw_sp);
1918 err_rx_listener_register:
1919 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1920 err_event_register:
1921 mlxsw_sp_ports_remove(mlxsw_sp);
1922 return err;
1923 }
1924
1925 static void mlxsw_sp_fini(void *priv)
1926 {
1927 struct mlxsw_sp *mlxsw_sp = priv;
1928
1929 mlxsw_sp_switchdev_fini(mlxsw_sp);
1930 mlxsw_sp_traps_fini(mlxsw_sp);
1931 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1932 mlxsw_sp_ports_remove(mlxsw_sp);
1933 }
1934
1935 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
1936 .used_max_vepa_channels = 1,
1937 .max_vepa_channels = 0,
1938 .used_max_lag = 1,
1939 .max_lag = MLXSW_SP_LAG_MAX,
1940 .used_max_port_per_lag = 1,
1941 .max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
1942 .used_max_mid = 1,
1943 .max_mid = MLXSW_SP_MID_MAX,
1944 .used_max_pgt = 1,
1945 .max_pgt = 0,
1946 .used_max_system_port = 1,
1947 .max_system_port = 64,
1948 .used_max_vlan_groups = 1,
1949 .max_vlan_groups = 127,
1950 .used_max_regions = 1,
1951 .max_regions = 400,
1952 .used_flood_tables = 1,
1953 .used_flood_mode = 1,
1954 .flood_mode = 3,
1955 .max_fid_offset_flood_tables = 2,
1956 .fid_offset_flood_table_size = VLAN_N_VID - 1,
1957 .max_fid_flood_tables = 2,
1958 .fid_flood_table_size = MLXSW_SP_VFID_MAX,
1959 .used_max_ib_mc = 1,
1960 .max_ib_mc = 0,
1961 .used_max_pkey = 1,
1962 .max_pkey = 0,
1963 .swid_config = {
1964 {
1965 .used_type = 1,
1966 .type = MLXSW_PORT_SWID_TYPE_ETH,
1967 }
1968 },
1969 };
1970
1971 static struct mlxsw_driver mlxsw_sp_driver = {
1972 .kind = MLXSW_DEVICE_KIND_SPECTRUM,
1973 .owner = THIS_MODULE,
1974 .priv_size = sizeof(struct mlxsw_sp),
1975 .init = mlxsw_sp_init,
1976 .fini = mlxsw_sp_fini,
1977 .txhdr_construct = mlxsw_sp_txhdr_construct,
1978 .txhdr_len = MLXSW_TXHDR_LEN,
1979 .profile = &mlxsw_sp_config_profile,
1980 };
1981
1982 static int
1983 mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
1984 {
1985 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1986 char sfdf_pl[MLXSW_REG_SFDF_LEN];
1987
1988 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT);
1989 mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);
1990
1991 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
1992 }
1993
1994 static int
1995 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
1996 u16 fid)
1997 {
1998 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1999 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2000
2001 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
2002 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2003 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
2004 mlxsw_sp_port->local_port);
2005
2006 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2007 }
2008
2009 static int
2010 mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
2011 {
2012 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2013 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2014
2015 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG);
2016 mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2017
2018 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2019 }
2020
2021 static int
2022 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
2023 u16 fid)
2024 {
2025 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2026 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2027
2028 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
2029 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2030 mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2031
2032 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2033 }
2034
2035 static int
2036 __mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
2037 {
2038 int err, last_err = 0;
2039 u16 vid;
2040
2041 for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2042 err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
2043 if (err)
2044 last_err = err;
2045 }
2046
2047 return last_err;
2048 }
2049
2050 static int
2051 __mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
2052 {
2053 int err, last_err = 0;
2054 u16 vid;
2055
2056 for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2057 err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
2058 if (err)
2059 last_err = err;
2060 }
2061
2062 return last_err;
2063 }
2064
2065 static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
2066 {
2067 if (!list_empty(&mlxsw_sp_port->vports_list))
2068 if (mlxsw_sp_port->lagged)
2069 return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
2070 else
2071 return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
2072 else
2073 if (mlxsw_sp_port->lagged)
2074 return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
2075 else
2076 return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
2077 }
2078
2079 static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
2080 {
2081 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
2082 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
2083
2084 if (mlxsw_sp_vport->lagged)
2085 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
2086 fid);
2087 else
2088 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
2089 }
2090
2091 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
2092 {
2093 return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
2094 }
2095
2096 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
2097 {
2098 struct net_device *dev = mlxsw_sp_port->dev;
2099 int err;
2100
2101 /* When port is not bridged untagged packets are tagged with
2102 * PVID=VID=1, thereby creating an implicit VLAN interface in
2103 * the device. Remove it and let bridge code take care of its
2104 * own VLANs.
2105 */
2106 err = mlxsw_sp_port_kill_vid(dev, 0, 1);
2107 if (err)
2108 return err;
2109
2110 mlxsw_sp_port->learning = 1;
2111 mlxsw_sp_port->learning_sync = 1;
2112 mlxsw_sp_port->uc_flood = 1;
2113 mlxsw_sp_port->bridged = 1;
2114
2115 return 0;
2116 }
2117
2118 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2119 bool flush_fdb)
2120 {
2121 struct net_device *dev = mlxsw_sp_port->dev;
2122
2123 if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
2124 netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2125
2126 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
2127
2128 mlxsw_sp_port->learning = 0;
2129 mlxsw_sp_port->learning_sync = 0;
2130 mlxsw_sp_port->uc_flood = 0;
2131 mlxsw_sp_port->bridged = 0;
2132
2133 /* Add implicit VLAN interface in the device, so that untagged
2134 * packets will be classified to the default vFID.
2135 */
2136 return mlxsw_sp_port_add_vid(dev, 0, 1);
2137 }
2138
2139 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2140 struct net_device *br_dev)
2141 {
2142 return !mlxsw_sp->master_bridge.dev ||
2143 mlxsw_sp->master_bridge.dev == br_dev;
2144 }
2145
2146 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2147 struct net_device *br_dev)
2148 {
2149 mlxsw_sp->master_bridge.dev = br_dev;
2150 mlxsw_sp->master_bridge.ref_count++;
2151 }
2152
2153 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2154 struct net_device *br_dev)
2155 {
2156 if (--mlxsw_sp->master_bridge.ref_count == 0)
2157 mlxsw_sp->master_bridge.dev = NULL;
2158 }
2159
2160 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2161 {
2162 char sldr_pl[MLXSW_REG_SLDR_LEN];
2163
2164 mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2165 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2166 }
2167
2168 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2169 {
2170 char sldr_pl[MLXSW_REG_SLDR_LEN];
2171
2172 mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2173 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2174 }
2175
2176 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2177 u16 lag_id, u8 port_index)
2178 {
2179 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2180 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2181
2182 mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2183 lag_id, port_index);
2184 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2185 }
2186
2187 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2188 u16 lag_id)
2189 {
2190 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2191 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2192
2193 mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2194 lag_id);
2195 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2196 }
2197
2198 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2199 u16 lag_id)
2200 {
2201 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2202 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2203
2204 mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2205 lag_id);
2206 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2207 }
2208
2209 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2210 u16 lag_id)
2211 {
2212 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2213 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2214
2215 mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2216 lag_id);
2217 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2218 }
2219
2220 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2221 struct net_device *lag_dev,
2222 u16 *p_lag_id)
2223 {
2224 struct mlxsw_sp_upper *lag;
2225 int free_lag_id = -1;
2226 int i;
2227
2228 for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2229 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2230 if (lag->ref_count) {
2231 if (lag->dev == lag_dev) {
2232 *p_lag_id = i;
2233 return 0;
2234 }
2235 } else if (free_lag_id < 0) {
2236 free_lag_id = i;
2237 }
2238 }
2239 if (free_lag_id < 0)
2240 return -EBUSY;
2241 *p_lag_id = free_lag_id;
2242 return 0;
2243 }
2244
2245 static bool
2246 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2247 struct net_device *lag_dev,
2248 struct netdev_lag_upper_info *lag_upper_info)
2249 {
2250 u16 lag_id;
2251
2252 if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2253 return false;
2254 if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2255 return false;
2256 return true;
2257 }
2258
2259 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2260 u16 lag_id, u8 *p_port_index)
2261 {
2262 int i;
2263
2264 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2265 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2266 *p_port_index = i;
2267 return 0;
2268 }
2269 }
2270 return -EBUSY;
2271 }
2272
2273 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2274 struct net_device *lag_dev)
2275 {
2276 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2277 struct mlxsw_sp_upper *lag;
2278 u16 lag_id;
2279 u8 port_index;
2280 int err;
2281
2282 err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2283 if (err)
2284 return err;
2285 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2286 if (!lag->ref_count) {
2287 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2288 if (err)
2289 return err;
2290 lag->dev = lag_dev;
2291 }
2292
2293 err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2294 if (err)
2295 return err;
2296 err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2297 if (err)
2298 goto err_col_port_add;
2299 err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2300 if (err)
2301 goto err_col_port_enable;
2302
2303 mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2304 mlxsw_sp_port->local_port);
2305 mlxsw_sp_port->lag_id = lag_id;
2306 mlxsw_sp_port->lagged = 1;
2307 lag->ref_count++;
2308 return 0;
2309
2310 err_col_port_add:
2311 if (!lag->ref_count)
2312 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2313 err_col_port_enable:
2314 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2315 return err;
2316 }
2317
2318 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2319 struct net_device *br_dev,
2320 bool flush_fdb);
2321
2322 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2323 struct net_device *lag_dev)
2324 {
2325 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2326 struct mlxsw_sp_port *mlxsw_sp_vport;
2327 struct mlxsw_sp_upper *lag;
2328 u16 lag_id = mlxsw_sp_port->lag_id;
2329 int err;
2330
2331 if (!mlxsw_sp_port->lagged)
2332 return 0;
2333 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2334 WARN_ON(lag->ref_count == 0);
2335
2336 err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2337 if (err)
2338 return err;
2339 err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2340 if (err)
2341 return err;
2342
2343 /* In case we leave a LAG device that has bridges built on top,
2344 * then their teardown sequence is never issued and we need to
2345 * invoke the necessary cleanup routines ourselves.
2346 */
2347 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2348 vport.list) {
2349 struct net_device *br_dev;
2350
2351 if (!mlxsw_sp_vport->bridged)
2352 continue;
2353
2354 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2355 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
2356 }
2357
2358 if (mlxsw_sp_port->bridged) {
2359 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
2360 mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
2361
2362 if (lag->ref_count == 1)
2363 mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
2364 }
2365
2366 if (lag->ref_count == 1) {
2367 if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
2368 netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2369 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2370 if (err)
2371 return err;
2372 }
2373
2374 mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2375 mlxsw_sp_port->local_port);
2376 mlxsw_sp_port->lagged = 0;
2377 lag->ref_count--;
2378 return 0;
2379 }
2380
2381 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2382 u16 lag_id)
2383 {
2384 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2385 char sldr_pl[MLXSW_REG_SLDR_LEN];
2386
2387 mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2388 mlxsw_sp_port->local_port);
2389 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2390 }
2391
2392 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2393 u16 lag_id)
2394 {
2395 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2396 char sldr_pl[MLXSW_REG_SLDR_LEN];
2397
2398 mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2399 mlxsw_sp_port->local_port);
2400 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2401 }
2402
2403 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2404 bool lag_tx_enabled)
2405 {
2406 if (lag_tx_enabled)
2407 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2408 mlxsw_sp_port->lag_id);
2409 else
2410 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2411 mlxsw_sp_port->lag_id);
2412 }
2413
2414 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2415 struct netdev_lag_lower_state_info *info)
2416 {
2417 return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2418 }
2419
2420 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2421 struct net_device *vlan_dev)
2422 {
2423 struct mlxsw_sp_port *mlxsw_sp_vport;
2424 u16 vid = vlan_dev_vlan_id(vlan_dev);
2425
2426 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2427 if (!mlxsw_sp_vport) {
2428 WARN_ON(!mlxsw_sp_vport);
2429 return -EINVAL;
2430 }
2431
2432 mlxsw_sp_vport->dev = vlan_dev;
2433
2434 return 0;
2435 }
2436
2437 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2438 struct net_device *vlan_dev)
2439 {
2440 struct mlxsw_sp_port *mlxsw_sp_vport;
2441 u16 vid = vlan_dev_vlan_id(vlan_dev);
2442
2443 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2444 if (!mlxsw_sp_vport) {
2445 WARN_ON(!mlxsw_sp_vport);
2446 return -EINVAL;
2447 }
2448
2449 /* When removing a VLAN device while still bridged we should first
2450 * remove it from the bridge, as we receive the bridge's notification
2451 * when the vPort is already gone.
2452 */
2453 if (mlxsw_sp_vport->bridged) {
2454 struct net_device *br_dev;
2455
2456 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2457 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
2458 }
2459
2460 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2461
2462 return 0;
2463 }
2464
2465 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2466 unsigned long event, void *ptr)
2467 {
2468 struct netdev_notifier_changeupper_info *info;
2469 struct mlxsw_sp_port *mlxsw_sp_port;
2470 struct net_device *upper_dev;
2471 struct mlxsw_sp *mlxsw_sp;
2472 int err;
2473
2474 mlxsw_sp_port = netdev_priv(dev);
2475 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2476 info = ptr;
2477
2478 switch (event) {
2479 case NETDEV_PRECHANGEUPPER:
2480 upper_dev = info->upper_dev;
2481 if (!info->master || !info->linking)
2482 break;
2483 /* HW limitation forbids to put ports to multiple bridges. */
2484 if (netif_is_bridge_master(upper_dev) &&
2485 !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2486 return NOTIFY_BAD;
2487 if (netif_is_lag_master(upper_dev) &&
2488 !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2489 info->upper_info))
2490 return NOTIFY_BAD;
2491 break;
2492 case NETDEV_CHANGEUPPER:
2493 upper_dev = info->upper_dev;
2494 if (is_vlan_dev(upper_dev)) {
2495 if (info->linking) {
2496 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2497 upper_dev);
2498 if (err) {
2499 netdev_err(dev, "Failed to link VLAN device\n");
2500 return NOTIFY_BAD;
2501 }
2502 } else {
2503 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2504 upper_dev);
2505 if (err) {
2506 netdev_err(dev, "Failed to unlink VLAN device\n");
2507 return NOTIFY_BAD;
2508 }
2509 }
2510 } else if (netif_is_bridge_master(upper_dev)) {
2511 if (info->linking) {
2512 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2513 if (err) {
2514 netdev_err(dev, "Failed to join bridge\n");
2515 return NOTIFY_BAD;
2516 }
2517 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2518 } else {
2519 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
2520 true);
2521 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2522 if (err) {
2523 netdev_err(dev, "Failed to leave bridge\n");
2524 return NOTIFY_BAD;
2525 }
2526 }
2527 } else if (netif_is_lag_master(upper_dev)) {
2528 if (info->linking) {
2529 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2530 upper_dev);
2531 if (err) {
2532 netdev_err(dev, "Failed to join link aggregation\n");
2533 return NOTIFY_BAD;
2534 }
2535 } else {
2536 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2537 upper_dev);
2538 if (err) {
2539 netdev_err(dev, "Failed to leave link aggregation\n");
2540 return NOTIFY_BAD;
2541 }
2542 }
2543 }
2544 break;
2545 }
2546
2547 return NOTIFY_DONE;
2548 }
2549
2550 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2551 unsigned long event, void *ptr)
2552 {
2553 struct netdev_notifier_changelowerstate_info *info;
2554 struct mlxsw_sp_port *mlxsw_sp_port;
2555 int err;
2556
2557 mlxsw_sp_port = netdev_priv(dev);
2558 info = ptr;
2559
2560 switch (event) {
2561 case NETDEV_CHANGELOWERSTATE:
2562 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2563 err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2564 info->lower_state_info);
2565 if (err)
2566 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2567 }
2568 break;
2569 }
2570
2571 return NOTIFY_DONE;
2572 }
2573
2574 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2575 unsigned long event, void *ptr)
2576 {
2577 switch (event) {
2578 case NETDEV_PRECHANGEUPPER:
2579 case NETDEV_CHANGEUPPER:
2580 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2581 case NETDEV_CHANGELOWERSTATE:
2582 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2583 }
2584
2585 return NOTIFY_DONE;
2586 }
2587
2588 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2589 unsigned long event, void *ptr)
2590 {
2591 struct net_device *dev;
2592 struct list_head *iter;
2593 int ret;
2594
2595 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2596 if (mlxsw_sp_port_dev_check(dev)) {
2597 ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2598 if (ret == NOTIFY_BAD)
2599 return ret;
2600 }
2601 }
2602
2603 return NOTIFY_DONE;
2604 }
2605
2606 static struct mlxsw_sp_vfid *
2607 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2608 const struct net_device *br_dev)
2609 {
2610 struct mlxsw_sp_vfid *vfid;
2611
2612 list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2613 if (vfid->br_dev == br_dev)
2614 return vfid;
2615 }
2616
2617 return NULL;
2618 }
2619
2620 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2621 {
2622 return vfid - MLXSW_SP_VFID_PORT_MAX;
2623 }
2624
2625 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2626 {
2627 return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2628 }
2629
2630 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2631 {
2632 return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2633 MLXSW_SP_VFID_BR_MAX);
2634 }
2635
2636 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2637 struct net_device *br_dev)
2638 {
2639 struct device *dev = mlxsw_sp->bus_info->dev;
2640 struct mlxsw_sp_vfid *vfid;
2641 u16 n_vfid;
2642 int err;
2643
2644 n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2645 if (n_vfid == MLXSW_SP_VFID_MAX) {
2646 dev_err(dev, "No available vFIDs\n");
2647 return ERR_PTR(-ERANGE);
2648 }
2649
2650 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2651 if (err) {
2652 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2653 return ERR_PTR(err);
2654 }
2655
2656 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2657 if (!vfid)
2658 goto err_allocate_vfid;
2659
2660 vfid->vfid = n_vfid;
2661 vfid->br_dev = br_dev;
2662
2663 list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2664 set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2665
2666 return vfid;
2667
2668 err_allocate_vfid:
2669 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2670 return ERR_PTR(-ENOMEM);
2671 }
2672
2673 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2674 struct mlxsw_sp_vfid *vfid)
2675 {
2676 u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2677
2678 clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2679 list_del(&vfid->list);
2680
2681 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2682
2683 kfree(vfid);
2684 }
2685
2686 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2687 struct net_device *br_dev,
2688 bool flush_fdb)
2689 {
2690 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2691 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2692 struct net_device *dev = mlxsw_sp_vport->dev;
2693 struct mlxsw_sp_vfid *vfid, *new_vfid;
2694 int err;
2695
2696 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2697 if (!vfid) {
2698 WARN_ON(!vfid);
2699 return -EINVAL;
2700 }
2701
2702 /* We need a vFID to go back to after leaving the bridge's vFID. */
2703 new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2704 if (!new_vfid) {
2705 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2706 if (IS_ERR(new_vfid)) {
2707 netdev_err(dev, "Failed to create vFID for VID=%d\n",
2708 vid);
2709 return PTR_ERR(new_vfid);
2710 }
2711 }
2712
2713 /* Invalidate existing {Port, VID} to vFID mapping and create a new
2714 * one for the new vFID.
2715 */
2716 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2717 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2718 false,
2719 mlxsw_sp_vfid_to_fid(vfid->vfid),
2720 vid);
2721 if (err) {
2722 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2723 vfid->vfid);
2724 goto err_port_vid_to_fid_invalidate;
2725 }
2726
2727 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2728 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2729 true,
2730 mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2731 vid);
2732 if (err) {
2733 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2734 new_vfid->vfid);
2735 goto err_port_vid_to_fid_validate;
2736 }
2737
2738 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2739 if (err) {
2740 netdev_err(dev, "Failed to disable learning\n");
2741 goto err_port_vid_learning_set;
2742 }
2743
2744 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2745 false);
2746 if (err) {
2747 netdev_err(dev, "Failed clear to clear flooding\n");
2748 goto err_vport_flood_set;
2749 }
2750
2751 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
2752 MLXSW_REG_SPMS_STATE_FORWARDING);
2753 if (err) {
2754 netdev_err(dev, "Failed to set STP state\n");
2755 goto err_port_stp_state_set;
2756 }
2757
2758 if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
2759 netdev_err(dev, "Failed to flush FDB\n");
2760
2761 /* Switch between the vFIDs and destroy the old one if needed. */
2762 new_vfid->nr_vports++;
2763 mlxsw_sp_vport->vport.vfid = new_vfid;
2764 vfid->nr_vports--;
2765 if (!vfid->nr_vports)
2766 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2767
2768 mlxsw_sp_vport->learning = 0;
2769 mlxsw_sp_vport->learning_sync = 0;
2770 mlxsw_sp_vport->uc_flood = 0;
2771 mlxsw_sp_vport->bridged = 0;
2772
2773 return 0;
2774
2775 err_port_stp_state_set:
2776 err_vport_flood_set:
2777 err_port_vid_learning_set:
2778 err_port_vid_to_fid_validate:
2779 err_port_vid_to_fid_invalidate:
2780 /* Rollback vFID only if new. */
2781 if (!new_vfid->nr_vports)
2782 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
2783 return err;
2784 }
2785
2786 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
2787 struct net_device *br_dev)
2788 {
2789 struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
2790 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2791 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2792 struct net_device *dev = mlxsw_sp_vport->dev;
2793 struct mlxsw_sp_vfid *vfid;
2794 int err;
2795
2796 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2797 if (!vfid) {
2798 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
2799 if (IS_ERR(vfid)) {
2800 netdev_err(dev, "Failed to create bridge vFID\n");
2801 return PTR_ERR(vfid);
2802 }
2803 }
2804
2805 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
2806 if (err) {
2807 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
2808 vfid->vfid);
2809 goto err_port_flood_set;
2810 }
2811
2812 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
2813 if (err) {
2814 netdev_err(dev, "Failed to enable learning\n");
2815 goto err_port_vid_learning_set;
2816 }
2817
2818 /* We need to invalidate existing {Port, VID} to vFID mapping and
2819 * create a new one for the bridge's vFID.
2820 */
2821 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2822 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2823 false,
2824 mlxsw_sp_vfid_to_fid(old_vfid->vfid),
2825 vid);
2826 if (err) {
2827 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2828 old_vfid->vfid);
2829 goto err_port_vid_to_fid_invalidate;
2830 }
2831
2832 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2833 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2834 true,
2835 mlxsw_sp_vfid_to_fid(vfid->vfid),
2836 vid);
2837 if (err) {
2838 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2839 vfid->vfid);
2840 goto err_port_vid_to_fid_validate;
2841 }
2842
2843 /* Switch between the vFIDs and destroy the old one if needed. */
2844 vfid->nr_vports++;
2845 mlxsw_sp_vport->vport.vfid = vfid;
2846 old_vfid->nr_vports--;
2847 if (!old_vfid->nr_vports)
2848 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
2849
2850 mlxsw_sp_vport->learning = 1;
2851 mlxsw_sp_vport->learning_sync = 1;
2852 mlxsw_sp_vport->uc_flood = 1;
2853 mlxsw_sp_vport->bridged = 1;
2854
2855 return 0;
2856
2857 err_port_vid_to_fid_validate:
2858 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2859 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
2860 mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
2861 err_port_vid_to_fid_invalidate:
2862 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2863 err_port_vid_learning_set:
2864 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
2865 err_port_flood_set:
2866 if (!vfid->nr_vports)
2867 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2868 return err;
2869 }
2870
2871 static bool
2872 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
2873 const struct net_device *br_dev)
2874 {
2875 struct mlxsw_sp_port *mlxsw_sp_vport;
2876
2877 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2878 vport.list) {
2879 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
2880 return false;
2881 }
2882
2883 return true;
2884 }
2885
2886 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
2887 unsigned long event, void *ptr,
2888 u16 vid)
2889 {
2890 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2891 struct netdev_notifier_changeupper_info *info = ptr;
2892 struct mlxsw_sp_port *mlxsw_sp_vport;
2893 struct net_device *upper_dev;
2894 int err;
2895
2896 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2897
2898 switch (event) {
2899 case NETDEV_PRECHANGEUPPER:
2900 upper_dev = info->upper_dev;
2901 if (!info->master || !info->linking)
2902 break;
2903 if (!netif_is_bridge_master(upper_dev))
2904 return NOTIFY_BAD;
2905 /* We can't have multiple VLAN interfaces configured on
2906 * the same port and being members in the same bridge.
2907 */
2908 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
2909 upper_dev))
2910 return NOTIFY_BAD;
2911 break;
2912 case NETDEV_CHANGEUPPER:
2913 upper_dev = info->upper_dev;
2914 if (!info->master)
2915 break;
2916 if (info->linking) {
2917 if (!mlxsw_sp_vport) {
2918 WARN_ON(!mlxsw_sp_vport);
2919 return NOTIFY_BAD;
2920 }
2921 err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
2922 upper_dev);
2923 if (err) {
2924 netdev_err(dev, "Failed to join bridge\n");
2925 return NOTIFY_BAD;
2926 }
2927 } else {
2928 /* We ignore bridge's unlinking notifications if vPort
2929 * is gone, since we already left the bridge when the
2930 * VLAN device was unlinked from the real device.
2931 */
2932 if (!mlxsw_sp_vport)
2933 return NOTIFY_DONE;
2934 err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
2935 upper_dev, true);
2936 if (err) {
2937 netdev_err(dev, "Failed to leave bridge\n");
2938 return NOTIFY_BAD;
2939 }
2940 }
2941 }
2942
2943 return NOTIFY_DONE;
2944 }
2945
2946 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
2947 unsigned long event, void *ptr,
2948 u16 vid)
2949 {
2950 struct net_device *dev;
2951 struct list_head *iter;
2952 int ret;
2953
2954 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2955 if (mlxsw_sp_port_dev_check(dev)) {
2956 ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
2957 vid);
2958 if (ret == NOTIFY_BAD)
2959 return ret;
2960 }
2961 }
2962
2963 return NOTIFY_DONE;
2964 }
2965
2966 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
2967 unsigned long event, void *ptr)
2968 {
2969 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
2970 u16 vid = vlan_dev_vlan_id(vlan_dev);
2971
2972 if (mlxsw_sp_port_dev_check(real_dev))
2973 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
2974 vid);
2975 else if (netif_is_lag_master(real_dev))
2976 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
2977 vid);
2978
2979 return NOTIFY_DONE;
2980 }
2981
2982 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
2983 unsigned long event, void *ptr)
2984 {
2985 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2986
2987 if (mlxsw_sp_port_dev_check(dev))
2988 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
2989
2990 if (netif_is_lag_master(dev))
2991 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
2992
2993 if (is_vlan_dev(dev))
2994 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
2995
2996 return NOTIFY_DONE;
2997 }
2998
2999 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
3000 .notifier_call = mlxsw_sp_netdevice_event,
3001 };
3002
3003 static int __init mlxsw_sp_module_init(void)
3004 {
3005 int err;
3006
3007 register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3008 err = mlxsw_core_driver_register(&mlxsw_sp_driver);
3009 if (err)
3010 goto err_core_driver_register;
3011 return 0;
3012
3013 err_core_driver_register:
3014 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3015 return err;
3016 }
3017
3018 static void __exit mlxsw_sp_module_exit(void)
3019 {
3020 mlxsw_core_driver_unregister(&mlxsw_sp_driver);
3021 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3022 }
3023
3024 module_init(mlxsw_sp_module_init);
3025 module_exit(mlxsw_sp_module_exit);
3026
3027 MODULE_LICENSE("Dual BSD/GPL");
3028 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
3029 MODULE_DESCRIPTION("Mellanox Spectrum driver");
3030 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);
Linux kernel - Deliverables
This page took 0.097101 seconds and 5 git commands to generate.