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[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / mellanox / mlxsw / spectrum.c
1 /*
2 * drivers/net/ethernet/mellanox/mlxsw/spectrum.c
3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/types.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/ethtool.h>
43 #include <linux/slab.h>
44 #include <linux/device.h>
45 #include <linux/skbuff.h>
46 #include <linux/if_vlan.h>
47 #include <linux/if_bridge.h>
48 #include <linux/workqueue.h>
49 #include <linux/jiffies.h>
50 #include <linux/bitops.h>
51 #include <linux/list.h>
52 #include <net/devlink.h>
53 #include <net/switchdev.h>
54 #include <generated/utsrelease.h>
55
56 #include "spectrum.h"
57 #include "core.h"
58 #include "reg.h"
59 #include "port.h"
60 #include "trap.h"
61 #include "txheader.h"
62
63 static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
64 static const char mlxsw_sp_driver_version[] = "1.0";
65
66 /* tx_hdr_version
67 * Tx header version.
68 * Must be set to 1.
69 */
70 MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
71
72 /* tx_hdr_ctl
73 * Packet control type.
74 * 0 - Ethernet control (e.g. EMADs, LACP)
75 * 1 - Ethernet data
76 */
77 MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
78
79 /* tx_hdr_proto
80 * Packet protocol type. Must be set to 1 (Ethernet).
81 */
82 MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
83
84 /* tx_hdr_rx_is_router
85 * Packet is sent from the router. Valid for data packets only.
86 */
87 MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
88
89 /* tx_hdr_fid_valid
90 * Indicates if the 'fid' field is valid and should be used for
91 * forwarding lookup. Valid for data packets only.
92 */
93 MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
94
95 /* tx_hdr_swid
96 * Switch partition ID. Must be set to 0.
97 */
98 MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
99
100 /* tx_hdr_control_tclass
101 * Indicates if the packet should use the control TClass and not one
102 * of the data TClasses.
103 */
104 MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
105
106 /* tx_hdr_etclass
107 * Egress TClass to be used on the egress device on the egress port.
108 */
109 MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
110
111 /* tx_hdr_port_mid
112 * Destination local port for unicast packets.
113 * Destination multicast ID for multicast packets.
114 *
115 * Control packets are directed to a specific egress port, while data
116 * packets are transmitted through the CPU port (0) into the switch partition,
117 * where forwarding rules are applied.
118 */
119 MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
120
121 /* tx_hdr_fid
122 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
123 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
124 * Valid for data packets only.
125 */
126 MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
127
128 /* tx_hdr_type
129 * 0 - Data packets
130 * 6 - Control packets
131 */
132 MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
133
134 static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
135 const struct mlxsw_tx_info *tx_info)
136 {
137 char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
138
139 memset(txhdr, 0, MLXSW_TXHDR_LEN);
140
141 mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
142 mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
143 mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
144 mlxsw_tx_hdr_swid_set(txhdr, 0);
145 mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
146 mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
147 mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
148 }
149
150 static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
151 {
152 char spad_pl[MLXSW_REG_SPAD_LEN];
153 int err;
154
155 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
156 if (err)
157 return err;
158 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
159 return 0;
160 }
161
162 static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
163 bool is_up)
164 {
165 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
166 char paos_pl[MLXSW_REG_PAOS_LEN];
167
168 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
169 is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
170 MLXSW_PORT_ADMIN_STATUS_DOWN);
171 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
172 }
173
174 static int mlxsw_sp_port_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
175 bool *p_is_up)
176 {
177 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
178 char paos_pl[MLXSW_REG_PAOS_LEN];
179 u8 oper_status;
180 int err;
181
182 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
183 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
184 if (err)
185 return err;
186 oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
187 *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
188 return 0;
189 }
190
191 static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
192 unsigned char *addr)
193 {
194 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
195 char ppad_pl[MLXSW_REG_PPAD_LEN];
196
197 mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
198 mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
199 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
200 }
201
202 static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
203 {
204 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
205 unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
206
207 ether_addr_copy(addr, mlxsw_sp->base_mac);
208 addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
209 return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
210 }
211
212 static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
213 u16 vid, enum mlxsw_reg_spms_state state)
214 {
215 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
216 char *spms_pl;
217 int err;
218
219 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
220 if (!spms_pl)
221 return -ENOMEM;
222 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
223 mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
224 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
225 kfree(spms_pl);
226 return err;
227 }
228
229 static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
230 {
231 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
232 char pmtu_pl[MLXSW_REG_PMTU_LEN];
233 int max_mtu;
234 int err;
235
236 mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
237 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
238 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
239 if (err)
240 return err;
241 max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
242
243 if (mtu > max_mtu)
244 return -EINVAL;
245
246 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
247 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
248 }
249
250 static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
251 {
252 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
253 char pspa_pl[MLXSW_REG_PSPA_LEN];
254
255 mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
256 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
257 }
258
259 static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
260 bool enable)
261 {
262 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
263 char svpe_pl[MLXSW_REG_SVPE_LEN];
264
265 mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
266 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
267 }
268
269 int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
270 enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
271 u16 vid)
272 {
273 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
274 char svfa_pl[MLXSW_REG_SVFA_LEN];
275
276 mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
277 fid, vid);
278 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
279 }
280
281 static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
282 u16 vid, bool learn_enable)
283 {
284 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
285 char *spvmlr_pl;
286 int err;
287
288 spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
289 if (!spvmlr_pl)
290 return -ENOMEM;
291 mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
292 learn_enable);
293 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
294 kfree(spvmlr_pl);
295 return err;
296 }
297
298 static int
299 mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
300 {
301 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
302 char sspr_pl[MLXSW_REG_SSPR_LEN];
303
304 mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
305 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
306 }
307
308 static int mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp,
309 u8 local_port, u8 *p_module,
310 u8 *p_width)
311 {
312 char pmlp_pl[MLXSW_REG_PMLP_LEN];
313 int err;
314
315 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
316 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
317 if (err)
318 return err;
319 *p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
320 *p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
321 return 0;
322 }
323
324 static int mlxsw_sp_port_module_map(struct mlxsw_sp *mlxsw_sp, u8 local_port,
325 u8 module, u8 width, u8 lane)
326 {
327 char pmlp_pl[MLXSW_REG_PMLP_LEN];
328 int i;
329
330 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
331 mlxsw_reg_pmlp_width_set(pmlp_pl, width);
332 for (i = 0; i < width; i++) {
333 mlxsw_reg_pmlp_module_set(pmlp_pl, i, module);
334 mlxsw_reg_pmlp_tx_lane_set(pmlp_pl, i, lane + i); /* Rx & Tx */
335 }
336
337 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
338 }
339
340 static int mlxsw_sp_port_module_unmap(struct mlxsw_sp *mlxsw_sp, u8 local_port)
341 {
342 char pmlp_pl[MLXSW_REG_PMLP_LEN];
343
344 mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
345 mlxsw_reg_pmlp_width_set(pmlp_pl, 0);
346 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
347 }
348
349 static int mlxsw_sp_port_open(struct net_device *dev)
350 {
351 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
352 int err;
353
354 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
355 if (err)
356 return err;
357 netif_start_queue(dev);
358 return 0;
359 }
360
361 static int mlxsw_sp_port_stop(struct net_device *dev)
362 {
363 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
364
365 netif_stop_queue(dev);
366 return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
367 }
368
369 static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
370 struct net_device *dev)
371 {
372 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
373 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
374 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
375 const struct mlxsw_tx_info tx_info = {
376 .local_port = mlxsw_sp_port->local_port,
377 .is_emad = false,
378 };
379 u64 len;
380 int err;
381
382 if (mlxsw_core_skb_transmit_busy(mlxsw_sp, &tx_info))
383 return NETDEV_TX_BUSY;
384
385 if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
386 struct sk_buff *skb_orig = skb;
387
388 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
389 if (!skb) {
390 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
391 dev_kfree_skb_any(skb_orig);
392 return NETDEV_TX_OK;
393 }
394 }
395
396 if (eth_skb_pad(skb)) {
397 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
398 return NETDEV_TX_OK;
399 }
400
401 mlxsw_sp_txhdr_construct(skb, &tx_info);
402 len = skb->len;
403 /* Due to a race we might fail here because of a full queue. In that
404 * unlikely case we simply drop the packet.
405 */
406 err = mlxsw_core_skb_transmit(mlxsw_sp, skb, &tx_info);
407
408 if (!err) {
409 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
410 u64_stats_update_begin(&pcpu_stats->syncp);
411 pcpu_stats->tx_packets++;
412 pcpu_stats->tx_bytes += len;
413 u64_stats_update_end(&pcpu_stats->syncp);
414 } else {
415 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
416 dev_kfree_skb_any(skb);
417 }
418 return NETDEV_TX_OK;
419 }
420
421 static void mlxsw_sp_set_rx_mode(struct net_device *dev)
422 {
423 }
424
425 static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
426 {
427 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
428 struct sockaddr *addr = p;
429 int err;
430
431 if (!is_valid_ether_addr(addr->sa_data))
432 return -EADDRNOTAVAIL;
433
434 err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
435 if (err)
436 return err;
437 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
438 return 0;
439 }
440
441 static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
442 {
443 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
444 int err;
445
446 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
447 if (err)
448 return err;
449 dev->mtu = mtu;
450 return 0;
451 }
452
453 static struct rtnl_link_stats64 *
454 mlxsw_sp_port_get_stats64(struct net_device *dev,
455 struct rtnl_link_stats64 *stats)
456 {
457 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
458 struct mlxsw_sp_port_pcpu_stats *p;
459 u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
460 u32 tx_dropped = 0;
461 unsigned int start;
462 int i;
463
464 for_each_possible_cpu(i) {
465 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
466 do {
467 start = u64_stats_fetch_begin_irq(&p->syncp);
468 rx_packets = p->rx_packets;
469 rx_bytes = p->rx_bytes;
470 tx_packets = p->tx_packets;
471 tx_bytes = p->tx_bytes;
472 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
473
474 stats->rx_packets += rx_packets;
475 stats->rx_bytes += rx_bytes;
476 stats->tx_packets += tx_packets;
477 stats->tx_bytes += tx_bytes;
478 /* tx_dropped is u32, updated without syncp protection. */
479 tx_dropped += p->tx_dropped;
480 }
481 stats->tx_dropped = tx_dropped;
482 return stats;
483 }
484
485 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
486 u16 vid_end, bool is_member, bool untagged)
487 {
488 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
489 char *spvm_pl;
490 int err;
491
492 spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
493 if (!spvm_pl)
494 return -ENOMEM;
495
496 mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
497 vid_end, is_member, untagged);
498 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
499 kfree(spvm_pl);
500 return err;
501 }
502
503 static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
504 {
505 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
506 u16 vid, last_visited_vid;
507 int err;
508
509 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
510 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
511 vid);
512 if (err) {
513 last_visited_vid = vid;
514 goto err_port_vid_to_fid_set;
515 }
516 }
517
518 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
519 if (err) {
520 last_visited_vid = VLAN_N_VID;
521 goto err_port_vid_to_fid_set;
522 }
523
524 return 0;
525
526 err_port_vid_to_fid_set:
527 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
528 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
529 vid);
530 return err;
531 }
532
533 static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
534 {
535 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
536 u16 vid;
537 int err;
538
539 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
540 if (err)
541 return err;
542
543 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
544 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
545 vid, vid);
546 if (err)
547 return err;
548 }
549
550 return 0;
551 }
552
553 static struct mlxsw_sp_vfid *
554 mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
555 {
556 struct mlxsw_sp_vfid *vfid;
557
558 list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
559 if (vfid->vid == vid)
560 return vfid;
561 }
562
563 return NULL;
564 }
565
566 static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
567 {
568 return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
569 MLXSW_SP_VFID_PORT_MAX);
570 }
571
572 static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
573 {
574 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
575 char sfmr_pl[MLXSW_REG_SFMR_LEN];
576
577 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
578 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
579 }
580
581 static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
582 {
583 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
584 char sfmr_pl[MLXSW_REG_SFMR_LEN];
585
586 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
587 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
588 }
589
590 static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
591 u16 vid)
592 {
593 struct device *dev = mlxsw_sp->bus_info->dev;
594 struct mlxsw_sp_vfid *vfid;
595 u16 n_vfid;
596 int err;
597
598 n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
599 if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
600 dev_err(dev, "No available vFIDs\n");
601 return ERR_PTR(-ERANGE);
602 }
603
604 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
605 if (err) {
606 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
607 return ERR_PTR(err);
608 }
609
610 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
611 if (!vfid)
612 goto err_allocate_vfid;
613
614 vfid->vfid = n_vfid;
615 vfid->vid = vid;
616
617 list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
618 set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
619
620 return vfid;
621
622 err_allocate_vfid:
623 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
624 return ERR_PTR(-ENOMEM);
625 }
626
627 static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
628 struct mlxsw_sp_vfid *vfid)
629 {
630 clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
631 list_del(&vfid->list);
632
633 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
634
635 kfree(vfid);
636 }
637
638 static struct mlxsw_sp_port *
639 mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
640 struct mlxsw_sp_vfid *vfid)
641 {
642 struct mlxsw_sp_port *mlxsw_sp_vport;
643
644 mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
645 if (!mlxsw_sp_vport)
646 return NULL;
647
648 /* dev will be set correctly after the VLAN device is linked
649 * with the real device. In case of bridge SELF invocation, dev
650 * will remain as is.
651 */
652 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
653 mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
654 mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
655 mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
656 mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
657 mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
658 mlxsw_sp_vport->vport.vfid = vfid;
659 mlxsw_sp_vport->vport.vid = vfid->vid;
660
661 list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
662
663 return mlxsw_sp_vport;
664 }
665
666 static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
667 {
668 list_del(&mlxsw_sp_vport->vport.list);
669 kfree(mlxsw_sp_vport);
670 }
671
672 int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
673 u16 vid)
674 {
675 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
676 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
677 struct mlxsw_sp_port *mlxsw_sp_vport;
678 struct mlxsw_sp_vfid *vfid;
679 int err;
680
681 /* VLAN 0 is added to HW filter when device goes up, but it is
682 * reserved in our case, so simply return.
683 */
684 if (!vid)
685 return 0;
686
687 if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
688 netdev_warn(dev, "VID=%d already configured\n", vid);
689 return 0;
690 }
691
692 vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
693 if (!vfid) {
694 vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
695 if (IS_ERR(vfid)) {
696 netdev_err(dev, "Failed to create vFID for VID=%d\n",
697 vid);
698 return PTR_ERR(vfid);
699 }
700 }
701
702 mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
703 if (!mlxsw_sp_vport) {
704 netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
705 err = -ENOMEM;
706 goto err_port_vport_create;
707 }
708
709 if (!vfid->nr_vports) {
710 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
711 true, false);
712 if (err) {
713 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
714 vfid->vfid);
715 goto err_vport_flood_set;
716 }
717 }
718
719 /* When adding the first VLAN interface on a bridged port we need to
720 * transition all the active 802.1Q bridge VLANs to use explicit
721 * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
722 */
723 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
724 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
725 if (err) {
726 netdev_err(dev, "Failed to set to Virtual mode\n");
727 goto err_port_vp_mode_trans;
728 }
729 }
730
731 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
732 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
733 true,
734 mlxsw_sp_vfid_to_fid(vfid->vfid),
735 vid);
736 if (err) {
737 netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
738 vid, vfid->vfid);
739 goto err_port_vid_to_fid_set;
740 }
741
742 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
743 if (err) {
744 netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
745 goto err_port_vid_learning_set;
746 }
747
748 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
749 if (err) {
750 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
751 vid);
752 goto err_port_add_vid;
753 }
754
755 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
756 MLXSW_REG_SPMS_STATE_FORWARDING);
757 if (err) {
758 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
759 goto err_port_stp_state_set;
760 }
761
762 vfid->nr_vports++;
763
764 return 0;
765
766 err_port_stp_state_set:
767 mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
768 err_port_add_vid:
769 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
770 err_port_vid_learning_set:
771 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
772 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
773 mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
774 err_port_vid_to_fid_set:
775 if (list_is_singular(&mlxsw_sp_port->vports_list))
776 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
777 err_port_vp_mode_trans:
778 if (!vfid->nr_vports)
779 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
780 false);
781 err_vport_flood_set:
782 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
783 err_port_vport_create:
784 if (!vfid->nr_vports)
785 mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
786 return err;
787 }
788
789 int mlxsw_sp_port_kill_vid(struct net_device *dev,
790 __be16 __always_unused proto, u16 vid)
791 {
792 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
793 struct mlxsw_sp_port *mlxsw_sp_vport;
794 struct mlxsw_sp_vfid *vfid;
795 int err;
796
797 /* VLAN 0 is removed from HW filter when device goes down, but
798 * it is reserved in our case, so simply return.
799 */
800 if (!vid)
801 return 0;
802
803 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
804 if (!mlxsw_sp_vport) {
805 netdev_warn(dev, "VID=%d does not exist\n", vid);
806 return 0;
807 }
808
809 vfid = mlxsw_sp_vport->vport.vfid;
810
811 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
812 MLXSW_REG_SPMS_STATE_DISCARDING);
813 if (err) {
814 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
815 return err;
816 }
817
818 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
819 if (err) {
820 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
821 vid);
822 return err;
823 }
824
825 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
826 if (err) {
827 netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
828 return err;
829 }
830
831 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
832 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
833 false,
834 mlxsw_sp_vfid_to_fid(vfid->vfid),
835 vid);
836 if (err) {
837 netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
838 vid, vfid->vfid);
839 return err;
840 }
841
842 /* When removing the last VLAN interface on a bridged port we need to
843 * transition all active 802.1Q bridge VLANs to use VID to FID
844 * mappings and set port's mode to VLAN mode.
845 */
846 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
847 err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
848 if (err) {
849 netdev_err(dev, "Failed to set to VLAN mode\n");
850 return err;
851 }
852 }
853
854 vfid->nr_vports--;
855 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
856
857 /* Destroy the vFID if no vPorts are assigned to it anymore. */
858 if (!vfid->nr_vports)
859 mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
860
861 return 0;
862 }
863
864 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
865 .ndo_open = mlxsw_sp_port_open,
866 .ndo_stop = mlxsw_sp_port_stop,
867 .ndo_start_xmit = mlxsw_sp_port_xmit,
868 .ndo_set_rx_mode = mlxsw_sp_set_rx_mode,
869 .ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
870 .ndo_change_mtu = mlxsw_sp_port_change_mtu,
871 .ndo_get_stats64 = mlxsw_sp_port_get_stats64,
872 .ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
873 .ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
874 .ndo_fdb_add = switchdev_port_fdb_add,
875 .ndo_fdb_del = switchdev_port_fdb_del,
876 .ndo_fdb_dump = switchdev_port_fdb_dump,
877 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
878 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
879 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
880 };
881
882 static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
883 struct ethtool_drvinfo *drvinfo)
884 {
885 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
886 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
887
888 strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
889 strlcpy(drvinfo->version, mlxsw_sp_driver_version,
890 sizeof(drvinfo->version));
891 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
892 "%d.%d.%d",
893 mlxsw_sp->bus_info->fw_rev.major,
894 mlxsw_sp->bus_info->fw_rev.minor,
895 mlxsw_sp->bus_info->fw_rev.subminor);
896 strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
897 sizeof(drvinfo->bus_info));
898 }
899
900 struct mlxsw_sp_port_hw_stats {
901 char str[ETH_GSTRING_LEN];
902 u64 (*getter)(char *payload);
903 };
904
905 static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
906 {
907 .str = "a_frames_transmitted_ok",
908 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
909 },
910 {
911 .str = "a_frames_received_ok",
912 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
913 },
914 {
915 .str = "a_frame_check_sequence_errors",
916 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
917 },
918 {
919 .str = "a_alignment_errors",
920 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
921 },
922 {
923 .str = "a_octets_transmitted_ok",
924 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
925 },
926 {
927 .str = "a_octets_received_ok",
928 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
929 },
930 {
931 .str = "a_multicast_frames_xmitted_ok",
932 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
933 },
934 {
935 .str = "a_broadcast_frames_xmitted_ok",
936 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
937 },
938 {
939 .str = "a_multicast_frames_received_ok",
940 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
941 },
942 {
943 .str = "a_broadcast_frames_received_ok",
944 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
945 },
946 {
947 .str = "a_in_range_length_errors",
948 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
949 },
950 {
951 .str = "a_out_of_range_length_field",
952 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
953 },
954 {
955 .str = "a_frame_too_long_errors",
956 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
957 },
958 {
959 .str = "a_symbol_error_during_carrier",
960 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
961 },
962 {
963 .str = "a_mac_control_frames_transmitted",
964 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
965 },
966 {
967 .str = "a_mac_control_frames_received",
968 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
969 },
970 {
971 .str = "a_unsupported_opcodes_received",
972 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
973 },
974 {
975 .str = "a_pause_mac_ctrl_frames_received",
976 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
977 },
978 {
979 .str = "a_pause_mac_ctrl_frames_xmitted",
980 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
981 },
982 };
983
984 #define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
985
986 static void mlxsw_sp_port_get_strings(struct net_device *dev,
987 u32 stringset, u8 *data)
988 {
989 u8 *p = data;
990 int i;
991
992 switch (stringset) {
993 case ETH_SS_STATS:
994 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
995 memcpy(p, mlxsw_sp_port_hw_stats[i].str,
996 ETH_GSTRING_LEN);
997 p += ETH_GSTRING_LEN;
998 }
999 break;
1000 }
1001 }
1002
1003 static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
1004 enum ethtool_phys_id_state state)
1005 {
1006 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1007 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1008 char mlcr_pl[MLXSW_REG_MLCR_LEN];
1009 bool active;
1010
1011 switch (state) {
1012 case ETHTOOL_ID_ACTIVE:
1013 active = true;
1014 break;
1015 case ETHTOOL_ID_INACTIVE:
1016 active = false;
1017 break;
1018 default:
1019 return -EOPNOTSUPP;
1020 }
1021
1022 mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
1023 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
1024 }
1025
1026 static void mlxsw_sp_port_get_stats(struct net_device *dev,
1027 struct ethtool_stats *stats, u64 *data)
1028 {
1029 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1030 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1031 char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1032 int i;
1033 int err;
1034
1035 mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
1036 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1037 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
1038 data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
1039 }
1040
1041 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1042 {
1043 switch (sset) {
1044 case ETH_SS_STATS:
1045 return MLXSW_SP_PORT_HW_STATS_LEN;
1046 default:
1047 return -EOPNOTSUPP;
1048 }
1049 }
1050
1051 struct mlxsw_sp_port_link_mode {
1052 u32 mask;
1053 u32 supported;
1054 u32 advertised;
1055 u32 speed;
1056 };
1057
1058 static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1059 {
1060 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1061 .supported = SUPPORTED_100baseT_Full,
1062 .advertised = ADVERTISED_100baseT_Full,
1063 .speed = 100,
1064 },
1065 {
1066 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1067 .speed = 100,
1068 },
1069 {
1070 .mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1071 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1072 .supported = SUPPORTED_1000baseKX_Full,
1073 .advertised = ADVERTISED_1000baseKX_Full,
1074 .speed = 1000,
1075 },
1076 {
1077 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1078 .supported = SUPPORTED_10000baseT_Full,
1079 .advertised = ADVERTISED_10000baseT_Full,
1080 .speed = 10000,
1081 },
1082 {
1083 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1084 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1085 .supported = SUPPORTED_10000baseKX4_Full,
1086 .advertised = ADVERTISED_10000baseKX4_Full,
1087 .speed = 10000,
1088 },
1089 {
1090 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1091 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1092 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1093 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1094 .supported = SUPPORTED_10000baseKR_Full,
1095 .advertised = ADVERTISED_10000baseKR_Full,
1096 .speed = 10000,
1097 },
1098 {
1099 .mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1100 .supported = SUPPORTED_20000baseKR2_Full,
1101 .advertised = ADVERTISED_20000baseKR2_Full,
1102 .speed = 20000,
1103 },
1104 {
1105 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1106 .supported = SUPPORTED_40000baseCR4_Full,
1107 .advertised = ADVERTISED_40000baseCR4_Full,
1108 .speed = 40000,
1109 },
1110 {
1111 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1112 .supported = SUPPORTED_40000baseKR4_Full,
1113 .advertised = ADVERTISED_40000baseKR4_Full,
1114 .speed = 40000,
1115 },
1116 {
1117 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1118 .supported = SUPPORTED_40000baseSR4_Full,
1119 .advertised = ADVERTISED_40000baseSR4_Full,
1120 .speed = 40000,
1121 },
1122 {
1123 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1124 .supported = SUPPORTED_40000baseLR4_Full,
1125 .advertised = ADVERTISED_40000baseLR4_Full,
1126 .speed = 40000,
1127 },
1128 {
1129 .mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1130 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1131 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1132 .speed = 25000,
1133 },
1134 {
1135 .mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1136 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1137 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1138 .speed = 50000,
1139 },
1140 {
1141 .mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1142 .supported = SUPPORTED_56000baseKR4_Full,
1143 .advertised = ADVERTISED_56000baseKR4_Full,
1144 .speed = 56000,
1145 },
1146 {
1147 .mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1148 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1149 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1150 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1151 .speed = 100000,
1152 },
1153 };
1154
1155 #define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1156
1157 static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1158 {
1159 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1160 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1161 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1162 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1163 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1164 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1165 return SUPPORTED_FIBRE;
1166
1167 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1168 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1169 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1170 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1171 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1172 return SUPPORTED_Backplane;
1173 return 0;
1174 }
1175
1176 static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1177 {
1178 u32 modes = 0;
1179 int i;
1180
1181 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1182 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1183 modes |= mlxsw_sp_port_link_mode[i].supported;
1184 }
1185 return modes;
1186 }
1187
1188 static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1189 {
1190 u32 modes = 0;
1191 int i;
1192
1193 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1194 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1195 modes |= mlxsw_sp_port_link_mode[i].advertised;
1196 }
1197 return modes;
1198 }
1199
1200 static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1201 struct ethtool_cmd *cmd)
1202 {
1203 u32 speed = SPEED_UNKNOWN;
1204 u8 duplex = DUPLEX_UNKNOWN;
1205 int i;
1206
1207 if (!carrier_ok)
1208 goto out;
1209
1210 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1211 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1212 speed = mlxsw_sp_port_link_mode[i].speed;
1213 duplex = DUPLEX_FULL;
1214 break;
1215 }
1216 }
1217 out:
1218 ethtool_cmd_speed_set(cmd, speed);
1219 cmd->duplex = duplex;
1220 }
1221
1222 static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1223 {
1224 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1225 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1226 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1227 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1228 return PORT_FIBRE;
1229
1230 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1231 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1232 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1233 return PORT_DA;
1234
1235 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1236 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1237 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1238 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1239 return PORT_NONE;
1240
1241 return PORT_OTHER;
1242 }
1243
1244 static int mlxsw_sp_port_get_settings(struct net_device *dev,
1245 struct ethtool_cmd *cmd)
1246 {
1247 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1248 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1249 char ptys_pl[MLXSW_REG_PTYS_LEN];
1250 u32 eth_proto_cap;
1251 u32 eth_proto_admin;
1252 u32 eth_proto_oper;
1253 int err;
1254
1255 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1256 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1257 if (err) {
1258 netdev_err(dev, "Failed to get proto");
1259 return err;
1260 }
1261 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1262 &eth_proto_admin, &eth_proto_oper);
1263
1264 cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1265 mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1266 SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1267 cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1268 mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1269 eth_proto_oper, cmd);
1270
1271 eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1272 cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1273 cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1274
1275 cmd->transceiver = XCVR_INTERNAL;
1276 return 0;
1277 }
1278
1279 static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1280 {
1281 u32 ptys_proto = 0;
1282 int i;
1283
1284 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1285 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1286 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1287 }
1288 return ptys_proto;
1289 }
1290
1291 static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1292 {
1293 u32 ptys_proto = 0;
1294 int i;
1295
1296 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1297 if (speed == mlxsw_sp_port_link_mode[i].speed)
1298 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1299 }
1300 return ptys_proto;
1301 }
1302
1303 static u32 mlxsw_sp_to_ptys_upper_speed(u32 upper_speed)
1304 {
1305 u32 ptys_proto = 0;
1306 int i;
1307
1308 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1309 if (mlxsw_sp_port_link_mode[i].speed <= upper_speed)
1310 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1311 }
1312 return ptys_proto;
1313 }
1314
1315 static int mlxsw_sp_port_set_settings(struct net_device *dev,
1316 struct ethtool_cmd *cmd)
1317 {
1318 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1319 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1320 char ptys_pl[MLXSW_REG_PTYS_LEN];
1321 u32 speed;
1322 u32 eth_proto_new;
1323 u32 eth_proto_cap;
1324 u32 eth_proto_admin;
1325 bool is_up;
1326 int err;
1327
1328 speed = ethtool_cmd_speed(cmd);
1329
1330 eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1331 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1332 mlxsw_sp_to_ptys_speed(speed);
1333
1334 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1335 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1336 if (err) {
1337 netdev_err(dev, "Failed to get proto");
1338 return err;
1339 }
1340 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1341
1342 eth_proto_new = eth_proto_new & eth_proto_cap;
1343 if (!eth_proto_new) {
1344 netdev_err(dev, "Not supported proto admin requested");
1345 return -EINVAL;
1346 }
1347 if (eth_proto_new == eth_proto_admin)
1348 return 0;
1349
1350 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1351 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1352 if (err) {
1353 netdev_err(dev, "Failed to set proto admin");
1354 return err;
1355 }
1356
1357 err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
1358 if (err) {
1359 netdev_err(dev, "Failed to get oper status");
1360 return err;
1361 }
1362 if (!is_up)
1363 return 0;
1364
1365 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1366 if (err) {
1367 netdev_err(dev, "Failed to set admin status");
1368 return err;
1369 }
1370
1371 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1372 if (err) {
1373 netdev_err(dev, "Failed to set admin status");
1374 return err;
1375 }
1376
1377 return 0;
1378 }
1379
1380 static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1381 .get_drvinfo = mlxsw_sp_port_get_drvinfo,
1382 .get_link = ethtool_op_get_link,
1383 .get_strings = mlxsw_sp_port_get_strings,
1384 .set_phys_id = mlxsw_sp_port_set_phys_id,
1385 .get_ethtool_stats = mlxsw_sp_port_get_stats,
1386 .get_sset_count = mlxsw_sp_port_get_sset_count,
1387 .get_settings = mlxsw_sp_port_get_settings,
1388 .set_settings = mlxsw_sp_port_set_settings,
1389 };
1390
1391 static int
1392 mlxsw_sp_port_speed_by_width_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 width)
1393 {
1394 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1395 u32 upper_speed = MLXSW_SP_PORT_BASE_SPEED * width;
1396 char ptys_pl[MLXSW_REG_PTYS_LEN];
1397 u32 eth_proto_admin;
1398
1399 eth_proto_admin = mlxsw_sp_to_ptys_upper_speed(upper_speed);
1400 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port,
1401 eth_proto_admin);
1402 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1403 }
1404
1405 static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1406 bool split, u8 module, u8 width)
1407 {
1408 struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
1409 struct mlxsw_sp_port *mlxsw_sp_port;
1410 struct devlink_port *devlink_port;
1411 struct net_device *dev;
1412 size_t bytes;
1413 int err;
1414
1415 dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
1416 if (!dev)
1417 return -ENOMEM;
1418 mlxsw_sp_port = netdev_priv(dev);
1419 mlxsw_sp_port->dev = dev;
1420 mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
1421 mlxsw_sp_port->local_port = local_port;
1422 mlxsw_sp_port->split = split;
1423 bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1424 mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1425 if (!mlxsw_sp_port->active_vlans) {
1426 err = -ENOMEM;
1427 goto err_port_active_vlans_alloc;
1428 }
1429 mlxsw_sp_port->untagged_vlans = kzalloc(bytes, GFP_KERNEL);
1430 if (!mlxsw_sp_port->untagged_vlans) {
1431 err = -ENOMEM;
1432 goto err_port_untagged_vlans_alloc;
1433 }
1434 INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
1435
1436 mlxsw_sp_port->pcpu_stats =
1437 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1438 if (!mlxsw_sp_port->pcpu_stats) {
1439 err = -ENOMEM;
1440 goto err_alloc_stats;
1441 }
1442
1443 dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1444 dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1445
1446 err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1447 if (err) {
1448 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1449 mlxsw_sp_port->local_port);
1450 goto err_dev_addr_init;
1451 }
1452
1453 netif_carrier_off(dev);
1454
1455 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1456 NETIF_F_HW_VLAN_CTAG_FILTER;
1457
1458 /* Each packet needs to have a Tx header (metadata) on top all other
1459 * headers.
1460 */
1461 dev->hard_header_len += MLXSW_TXHDR_LEN;
1462
1463 devlink_port = &mlxsw_sp_port->devlink_port;
1464 if (mlxsw_sp_port->split)
1465 devlink_port_split_set(devlink_port, module);
1466 err = devlink_port_register(devlink, devlink_port, local_port);
1467 if (err) {
1468 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register devlink port\n",
1469 mlxsw_sp_port->local_port);
1470 goto err_devlink_port_register;
1471 }
1472
1473 err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1474 if (err) {
1475 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1476 mlxsw_sp_port->local_port);
1477 goto err_port_system_port_mapping_set;
1478 }
1479
1480 err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1481 if (err) {
1482 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1483 mlxsw_sp_port->local_port);
1484 goto err_port_swid_set;
1485 }
1486
1487 err = mlxsw_sp_port_speed_by_width_set(mlxsw_sp_port, width);
1488 if (err) {
1489 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to enable speeds\n",
1490 mlxsw_sp_port->local_port);
1491 goto err_port_speed_by_width_set;
1492 }
1493
1494 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1495 if (err) {
1496 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1497 mlxsw_sp_port->local_port);
1498 goto err_port_mtu_set;
1499 }
1500
1501 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1502 if (err)
1503 goto err_port_admin_status_set;
1504
1505 err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1506 if (err) {
1507 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1508 mlxsw_sp_port->local_port);
1509 goto err_port_buffers_init;
1510 }
1511
1512 mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1513 err = register_netdev(dev);
1514 if (err) {
1515 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1516 mlxsw_sp_port->local_port);
1517 goto err_register_netdev;
1518 }
1519
1520 devlink_port_type_eth_set(devlink_port, dev);
1521
1522 err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1523 if (err)
1524 goto err_port_vlan_init;
1525
1526 mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1527 return 0;
1528
1529 err_port_vlan_init:
1530 unregister_netdev(dev);
1531 err_register_netdev:
1532 err_port_buffers_init:
1533 err_port_admin_status_set:
1534 err_port_mtu_set:
1535 err_port_speed_by_width_set:
1536 err_port_swid_set:
1537 err_port_system_port_mapping_set:
1538 devlink_port_unregister(&mlxsw_sp_port->devlink_port);
1539 err_devlink_port_register:
1540 err_dev_addr_init:
1541 free_percpu(mlxsw_sp_port->pcpu_stats);
1542 err_alloc_stats:
1543 kfree(mlxsw_sp_port->untagged_vlans);
1544 err_port_untagged_vlans_alloc:
1545 kfree(mlxsw_sp_port->active_vlans);
1546 err_port_active_vlans_alloc:
1547 free_netdev(dev);
1548 return err;
1549 }
1550
1551 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
1552 bool split, u8 module, u8 width, u8 lane)
1553 {
1554 int err;
1555
1556 err = mlxsw_sp_port_module_map(mlxsw_sp, local_port, module, width,
1557 lane);
1558 if (err)
1559 return err;
1560
1561 err = __mlxsw_sp_port_create(mlxsw_sp, local_port, split, module,
1562 width);
1563 if (err)
1564 goto err_port_create;
1565
1566 return 0;
1567
1568 err_port_create:
1569 mlxsw_sp_port_module_unmap(mlxsw_sp, local_port);
1570 return err;
1571 }
1572
1573 static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
1574 {
1575 struct net_device *dev = mlxsw_sp_port->dev;
1576 struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
1577
1578 list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1579 &mlxsw_sp_port->vports_list, vport.list) {
1580 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1581
1582 /* vPorts created for VLAN devices should already be gone
1583 * by now, since we unregistered the port netdev.
1584 */
1585 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1586 mlxsw_sp_port_kill_vid(dev, 0, vid);
1587 }
1588 }
1589
1590 static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1591 {
1592 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1593 struct devlink_port *devlink_port;
1594
1595 if (!mlxsw_sp_port)
1596 return;
1597 mlxsw_sp->ports[local_port] = NULL;
1598 devlink_port = &mlxsw_sp_port->devlink_port;
1599 devlink_port_type_clear(devlink_port);
1600 unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
1601 devlink_port_unregister(devlink_port);
1602 mlxsw_sp_port_vports_fini(mlxsw_sp_port);
1603 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1604 mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
1605 mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
1606 free_percpu(mlxsw_sp_port->pcpu_stats);
1607 kfree(mlxsw_sp_port->untagged_vlans);
1608 kfree(mlxsw_sp_port->active_vlans);
1609 free_netdev(mlxsw_sp_port->dev);
1610 }
1611
1612 static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1613 {
1614 int i;
1615
1616 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1617 mlxsw_sp_port_remove(mlxsw_sp, i);
1618 kfree(mlxsw_sp->ports);
1619 }
1620
1621 static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1622 {
1623 size_t alloc_size;
1624 u8 module, width;
1625 int i;
1626 int err;
1627
1628 alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1629 mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1630 if (!mlxsw_sp->ports)
1631 return -ENOMEM;
1632
1633 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1634 err = mlxsw_sp_port_module_info_get(mlxsw_sp, i, &module,
1635 &width);
1636 if (err)
1637 goto err_port_module_info_get;
1638 if (!width)
1639 continue;
1640 mlxsw_sp->port_to_module[i] = module;
1641 err = __mlxsw_sp_port_create(mlxsw_sp, i, false, module, width);
1642 if (err)
1643 goto err_port_create;
1644 }
1645 return 0;
1646
1647 err_port_create:
1648 err_port_module_info_get:
1649 for (i--; i >= 1; i--)
1650 mlxsw_sp_port_remove(mlxsw_sp, i);
1651 kfree(mlxsw_sp->ports);
1652 return err;
1653 }
1654
1655 static u8 mlxsw_sp_cluster_base_port_get(u8 local_port)
1656 {
1657 u8 offset = (local_port - 1) % MLXSW_SP_PORTS_PER_CLUSTER_MAX;
1658
1659 return local_port - offset;
1660 }
1661
1662 static int mlxsw_sp_port_split(void *priv, u8 local_port, unsigned int count)
1663 {
1664 struct mlxsw_sp *mlxsw_sp = priv;
1665 struct mlxsw_sp_port *mlxsw_sp_port;
1666 u8 width = MLXSW_PORT_MODULE_MAX_WIDTH / count;
1667 u8 module, cur_width, base_port;
1668 int i;
1669 int err;
1670
1671 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1672 if (!mlxsw_sp_port) {
1673 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
1674 local_port);
1675 return -EINVAL;
1676 }
1677
1678 if (count != 2 && count != 4) {
1679 netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
1680 return -EINVAL;
1681 }
1682
1683 err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
1684 &cur_width);
1685 if (err) {
1686 netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
1687 return err;
1688 }
1689
1690 if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
1691 netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
1692 return -EINVAL;
1693 }
1694
1695 /* Make sure we have enough slave (even) ports for the split. */
1696 if (count == 2) {
1697 base_port = local_port;
1698 if (mlxsw_sp->ports[base_port + 1]) {
1699 netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
1700 return -EINVAL;
1701 }
1702 } else {
1703 base_port = mlxsw_sp_cluster_base_port_get(local_port);
1704 if (mlxsw_sp->ports[base_port + 1] ||
1705 mlxsw_sp->ports[base_port + 3]) {
1706 netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
1707 return -EINVAL;
1708 }
1709 }
1710
1711 for (i = 0; i < count; i++)
1712 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1713
1714 for (i = 0; i < count; i++) {
1715 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i, true,
1716 module, width, i * width);
1717 if (err) {
1718 dev_err(mlxsw_sp->bus_info->dev, "Failed to create split port\n");
1719 goto err_port_create;
1720 }
1721 }
1722
1723 return 0;
1724
1725 err_port_create:
1726 for (i--; i >= 0; i--)
1727 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1728 for (i = 0; i < count / 2; i++) {
1729 module = mlxsw_sp->port_to_module[base_port + i * 2];
1730 mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
1731 module, MLXSW_PORT_MODULE_MAX_WIDTH, 0);
1732 }
1733 return err;
1734 }
1735
1736 static int mlxsw_sp_port_unsplit(void *priv, u8 local_port)
1737 {
1738 struct mlxsw_sp *mlxsw_sp = priv;
1739 struct mlxsw_sp_port *mlxsw_sp_port;
1740 u8 module, cur_width, base_port;
1741 unsigned int count;
1742 int i;
1743 int err;
1744
1745 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1746 if (!mlxsw_sp_port) {
1747 dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
1748 local_port);
1749 return -EINVAL;
1750 }
1751
1752 if (!mlxsw_sp_port->split) {
1753 netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
1754 return -EINVAL;
1755 }
1756
1757 err = mlxsw_sp_port_module_info_get(mlxsw_sp, local_port, &module,
1758 &cur_width);
1759 if (err) {
1760 netdev_err(mlxsw_sp_port->dev, "Failed to get port's width\n");
1761 return err;
1762 }
1763 count = cur_width == 1 ? 4 : 2;
1764
1765 base_port = mlxsw_sp_cluster_base_port_get(local_port);
1766
1767 /* Determine which ports to remove. */
1768 if (count == 2 && local_port >= base_port + 2)
1769 base_port = base_port + 2;
1770
1771 for (i = 0; i < count; i++)
1772 mlxsw_sp_port_remove(mlxsw_sp, base_port + i);
1773
1774 for (i = 0; i < count / 2; i++) {
1775 module = mlxsw_sp->port_to_module[base_port + i * 2];
1776 err = mlxsw_sp_port_create(mlxsw_sp, base_port + i * 2, false,
1777 module, MLXSW_PORT_MODULE_MAX_WIDTH,
1778 0);
1779 if (err)
1780 dev_err(mlxsw_sp->bus_info->dev, "Failed to reinstantiate port\n");
1781 }
1782
1783 return 0;
1784 }
1785
1786 static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1787 char *pude_pl, void *priv)
1788 {
1789 struct mlxsw_sp *mlxsw_sp = priv;
1790 struct mlxsw_sp_port *mlxsw_sp_port;
1791 enum mlxsw_reg_pude_oper_status status;
1792 u8 local_port;
1793
1794 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1795 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1796 if (!mlxsw_sp_port) {
1797 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1798 local_port);
1799 return;
1800 }
1801
1802 status = mlxsw_reg_pude_oper_status_get(pude_pl);
1803 if (status == MLXSW_PORT_OPER_STATUS_UP) {
1804 netdev_info(mlxsw_sp_port->dev, "link up\n");
1805 netif_carrier_on(mlxsw_sp_port->dev);
1806 } else {
1807 netdev_info(mlxsw_sp_port->dev, "link down\n");
1808 netif_carrier_off(mlxsw_sp_port->dev);
1809 }
1810 }
1811
1812 static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1813 .func = mlxsw_sp_pude_event_func,
1814 .trap_id = MLXSW_TRAP_ID_PUDE,
1815 };
1816
1817 static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1818 enum mlxsw_event_trap_id trap_id)
1819 {
1820 struct mlxsw_event_listener *el;
1821 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1822 int err;
1823
1824 switch (trap_id) {
1825 case MLXSW_TRAP_ID_PUDE:
1826 el = &mlxsw_sp_pude_event;
1827 break;
1828 }
1829 err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1830 if (err)
1831 return err;
1832
1833 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1834 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1835 if (err)
1836 goto err_event_trap_set;
1837
1838 return 0;
1839
1840 err_event_trap_set:
1841 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1842 return err;
1843 }
1844
1845 static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1846 enum mlxsw_event_trap_id trap_id)
1847 {
1848 struct mlxsw_event_listener *el;
1849
1850 switch (trap_id) {
1851 case MLXSW_TRAP_ID_PUDE:
1852 el = &mlxsw_sp_pude_event;
1853 break;
1854 }
1855 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1856 }
1857
1858 static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1859 void *priv)
1860 {
1861 struct mlxsw_sp *mlxsw_sp = priv;
1862 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1863 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1864
1865 if (unlikely(!mlxsw_sp_port)) {
1866 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1867 local_port);
1868 return;
1869 }
1870
1871 skb->dev = mlxsw_sp_port->dev;
1872
1873 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1874 u64_stats_update_begin(&pcpu_stats->syncp);
1875 pcpu_stats->rx_packets++;
1876 pcpu_stats->rx_bytes += skb->len;
1877 u64_stats_update_end(&pcpu_stats->syncp);
1878
1879 skb->protocol = eth_type_trans(skb, skb->dev);
1880 netif_receive_skb(skb);
1881 }
1882
1883 static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1884 {
1885 .func = mlxsw_sp_rx_listener_func,
1886 .local_port = MLXSW_PORT_DONT_CARE,
1887 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1888 },
1889 /* Traps for specific L2 packet types, not trapped as FDB MC */
1890 {
1891 .func = mlxsw_sp_rx_listener_func,
1892 .local_port = MLXSW_PORT_DONT_CARE,
1893 .trap_id = MLXSW_TRAP_ID_STP,
1894 },
1895 {
1896 .func = mlxsw_sp_rx_listener_func,
1897 .local_port = MLXSW_PORT_DONT_CARE,
1898 .trap_id = MLXSW_TRAP_ID_LACP,
1899 },
1900 {
1901 .func = mlxsw_sp_rx_listener_func,
1902 .local_port = MLXSW_PORT_DONT_CARE,
1903 .trap_id = MLXSW_TRAP_ID_EAPOL,
1904 },
1905 {
1906 .func = mlxsw_sp_rx_listener_func,
1907 .local_port = MLXSW_PORT_DONT_CARE,
1908 .trap_id = MLXSW_TRAP_ID_LLDP,
1909 },
1910 {
1911 .func = mlxsw_sp_rx_listener_func,
1912 .local_port = MLXSW_PORT_DONT_CARE,
1913 .trap_id = MLXSW_TRAP_ID_MMRP,
1914 },
1915 {
1916 .func = mlxsw_sp_rx_listener_func,
1917 .local_port = MLXSW_PORT_DONT_CARE,
1918 .trap_id = MLXSW_TRAP_ID_MVRP,
1919 },
1920 {
1921 .func = mlxsw_sp_rx_listener_func,
1922 .local_port = MLXSW_PORT_DONT_CARE,
1923 .trap_id = MLXSW_TRAP_ID_RPVST,
1924 },
1925 {
1926 .func = mlxsw_sp_rx_listener_func,
1927 .local_port = MLXSW_PORT_DONT_CARE,
1928 .trap_id = MLXSW_TRAP_ID_DHCP,
1929 },
1930 {
1931 .func = mlxsw_sp_rx_listener_func,
1932 .local_port = MLXSW_PORT_DONT_CARE,
1933 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1934 },
1935 {
1936 .func = mlxsw_sp_rx_listener_func,
1937 .local_port = MLXSW_PORT_DONT_CARE,
1938 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1939 },
1940 {
1941 .func = mlxsw_sp_rx_listener_func,
1942 .local_port = MLXSW_PORT_DONT_CARE,
1943 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1944 },
1945 {
1946 .func = mlxsw_sp_rx_listener_func,
1947 .local_port = MLXSW_PORT_DONT_CARE,
1948 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1949 },
1950 {
1951 .func = mlxsw_sp_rx_listener_func,
1952 .local_port = MLXSW_PORT_DONT_CARE,
1953 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1954 },
1955 };
1956
1957 static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1958 {
1959 char htgt_pl[MLXSW_REG_HTGT_LEN];
1960 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1961 int i;
1962 int err;
1963
1964 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1965 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1966 if (err)
1967 return err;
1968
1969 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1970 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1971 if (err)
1972 return err;
1973
1974 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1975 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1976 &mlxsw_sp_rx_listener[i],
1977 mlxsw_sp);
1978 if (err)
1979 goto err_rx_listener_register;
1980
1981 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1982 mlxsw_sp_rx_listener[i].trap_id);
1983 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1984 if (err)
1985 goto err_rx_trap_set;
1986 }
1987 return 0;
1988
1989 err_rx_trap_set:
1990 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1991 &mlxsw_sp_rx_listener[i],
1992 mlxsw_sp);
1993 err_rx_listener_register:
1994 for (i--; i >= 0; i--) {
1995 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1996 mlxsw_sp_rx_listener[i].trap_id);
1997 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1998
1999 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2000 &mlxsw_sp_rx_listener[i],
2001 mlxsw_sp);
2002 }
2003 return err;
2004 }
2005
2006 static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
2007 {
2008 char hpkt_pl[MLXSW_REG_HPKT_LEN];
2009 int i;
2010
2011 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
2012 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
2013 mlxsw_sp_rx_listener[i].trap_id);
2014 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
2015
2016 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
2017 &mlxsw_sp_rx_listener[i],
2018 mlxsw_sp);
2019 }
2020 }
2021
2022 static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
2023 enum mlxsw_reg_sfgc_type type,
2024 enum mlxsw_reg_sfgc_bridge_type bridge_type)
2025 {
2026 enum mlxsw_flood_table_type table_type;
2027 enum mlxsw_sp_flood_table flood_table;
2028 char sfgc_pl[MLXSW_REG_SFGC_LEN];
2029
2030 if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
2031 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
2032 else
2033 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
2034
2035 if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
2036 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
2037 else
2038 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
2039
2040 mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
2041 flood_table);
2042 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
2043 }
2044
2045 static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
2046 {
2047 int type, err;
2048
2049 for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
2050 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
2051 continue;
2052
2053 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2054 MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
2055 if (err)
2056 return err;
2057
2058 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
2059 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
2060 if (err)
2061 return err;
2062 }
2063
2064 return 0;
2065 }
2066
2067 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
2068 {
2069 char slcr_pl[MLXSW_REG_SLCR_LEN];
2070
2071 mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
2072 MLXSW_REG_SLCR_LAG_HASH_DMAC |
2073 MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
2074 MLXSW_REG_SLCR_LAG_HASH_VLANID |
2075 MLXSW_REG_SLCR_LAG_HASH_SIP |
2076 MLXSW_REG_SLCR_LAG_HASH_DIP |
2077 MLXSW_REG_SLCR_LAG_HASH_SPORT |
2078 MLXSW_REG_SLCR_LAG_HASH_DPORT |
2079 MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
2080 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
2081 }
2082
2083 static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
2084 const struct mlxsw_bus_info *mlxsw_bus_info)
2085 {
2086 struct mlxsw_sp *mlxsw_sp = priv;
2087 int err;
2088
2089 mlxsw_sp->core = mlxsw_core;
2090 mlxsw_sp->bus_info = mlxsw_bus_info;
2091 INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
2092 INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
2093 INIT_LIST_HEAD(&mlxsw_sp->br_mids.list);
2094
2095 err = mlxsw_sp_base_mac_get(mlxsw_sp);
2096 if (err) {
2097 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
2098 return err;
2099 }
2100
2101 err = mlxsw_sp_ports_create(mlxsw_sp);
2102 if (err) {
2103 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
2104 return err;
2105 }
2106
2107 err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2108 if (err) {
2109 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
2110 goto err_event_register;
2111 }
2112
2113 err = mlxsw_sp_traps_init(mlxsw_sp);
2114 if (err) {
2115 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
2116 goto err_rx_listener_register;
2117 }
2118
2119 err = mlxsw_sp_flood_init(mlxsw_sp);
2120 if (err) {
2121 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
2122 goto err_flood_init;
2123 }
2124
2125 err = mlxsw_sp_buffers_init(mlxsw_sp);
2126 if (err) {
2127 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
2128 goto err_buffers_init;
2129 }
2130
2131 err = mlxsw_sp_lag_init(mlxsw_sp);
2132 if (err) {
2133 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
2134 goto err_lag_init;
2135 }
2136
2137 err = mlxsw_sp_switchdev_init(mlxsw_sp);
2138 if (err) {
2139 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
2140 goto err_switchdev_init;
2141 }
2142
2143 return 0;
2144
2145 err_switchdev_init:
2146 err_lag_init:
2147 err_buffers_init:
2148 err_flood_init:
2149 mlxsw_sp_traps_fini(mlxsw_sp);
2150 err_rx_listener_register:
2151 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2152 err_event_register:
2153 mlxsw_sp_ports_remove(mlxsw_sp);
2154 return err;
2155 }
2156
2157 static void mlxsw_sp_fini(void *priv)
2158 {
2159 struct mlxsw_sp *mlxsw_sp = priv;
2160
2161 mlxsw_sp_switchdev_fini(mlxsw_sp);
2162 mlxsw_sp_traps_fini(mlxsw_sp);
2163 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
2164 mlxsw_sp_ports_remove(mlxsw_sp);
2165 }
2166
2167 static struct mlxsw_config_profile mlxsw_sp_config_profile = {
2168 .used_max_vepa_channels = 1,
2169 .max_vepa_channels = 0,
2170 .used_max_lag = 1,
2171 .max_lag = MLXSW_SP_LAG_MAX,
2172 .used_max_port_per_lag = 1,
2173 .max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
2174 .used_max_mid = 1,
2175 .max_mid = MLXSW_SP_MID_MAX,
2176 .used_max_pgt = 1,
2177 .max_pgt = 0,
2178 .used_max_system_port = 1,
2179 .max_system_port = 64,
2180 .used_max_vlan_groups = 1,
2181 .max_vlan_groups = 127,
2182 .used_max_regions = 1,
2183 .max_regions = 400,
2184 .used_flood_tables = 1,
2185 .used_flood_mode = 1,
2186 .flood_mode = 3,
2187 .max_fid_offset_flood_tables = 2,
2188 .fid_offset_flood_table_size = VLAN_N_VID - 1,
2189 .max_fid_flood_tables = 2,
2190 .fid_flood_table_size = MLXSW_SP_VFID_MAX,
2191 .used_max_ib_mc = 1,
2192 .max_ib_mc = 0,
2193 .used_max_pkey = 1,
2194 .max_pkey = 0,
2195 .swid_config = {
2196 {
2197 .used_type = 1,
2198 .type = MLXSW_PORT_SWID_TYPE_ETH,
2199 }
2200 },
2201 };
2202
2203 static struct mlxsw_driver mlxsw_sp_driver = {
2204 .kind = MLXSW_DEVICE_KIND_SPECTRUM,
2205 .owner = THIS_MODULE,
2206 .priv_size = sizeof(struct mlxsw_sp),
2207 .init = mlxsw_sp_init,
2208 .fini = mlxsw_sp_fini,
2209 .port_split = mlxsw_sp_port_split,
2210 .port_unsplit = mlxsw_sp_port_unsplit,
2211 .txhdr_construct = mlxsw_sp_txhdr_construct,
2212 .txhdr_len = MLXSW_TXHDR_LEN,
2213 .profile = &mlxsw_sp_config_profile,
2214 };
2215
2216 static int
2217 mlxsw_sp_port_fdb_flush_by_port(const struct mlxsw_sp_port *mlxsw_sp_port)
2218 {
2219 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2220 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2221
2222 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT);
2223 mlxsw_reg_sfdf_system_port_set(sfdf_pl, mlxsw_sp_port->local_port);
2224
2225 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2226 }
2227
2228 static int
2229 mlxsw_sp_port_fdb_flush_by_port_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
2230 u16 fid)
2231 {
2232 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2233 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2234
2235 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID);
2236 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2237 mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl,
2238 mlxsw_sp_port->local_port);
2239
2240 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2241 }
2242
2243 static int
2244 mlxsw_sp_port_fdb_flush_by_lag_id(const struct mlxsw_sp_port *mlxsw_sp_port)
2245 {
2246 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2247 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2248
2249 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG);
2250 mlxsw_reg_sfdf_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2251
2252 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2253 }
2254
2255 static int
2256 mlxsw_sp_port_fdb_flush_by_lag_id_fid(const struct mlxsw_sp_port *mlxsw_sp_port,
2257 u16 fid)
2258 {
2259 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2260 char sfdf_pl[MLXSW_REG_SFDF_LEN];
2261
2262 mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID);
2263 mlxsw_reg_sfdf_fid_set(sfdf_pl, fid);
2264 mlxsw_reg_sfdf_lag_fid_lag_id_set(sfdf_pl, mlxsw_sp_port->lag_id);
2265
2266 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
2267 }
2268
2269 static int
2270 __mlxsw_sp_port_fdb_flush(const struct mlxsw_sp_port *mlxsw_sp_port)
2271 {
2272 int err, last_err = 0;
2273 u16 vid;
2274
2275 for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2276 err = mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_port, vid);
2277 if (err)
2278 last_err = err;
2279 }
2280
2281 return last_err;
2282 }
2283
2284 static int
2285 __mlxsw_sp_port_fdb_flush_lagged(const struct mlxsw_sp_port *mlxsw_sp_port)
2286 {
2287 int err, last_err = 0;
2288 u16 vid;
2289
2290 for (vid = 1; vid < VLAN_N_VID - 1; vid++) {
2291 err = mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_port, vid);
2292 if (err)
2293 last_err = err;
2294 }
2295
2296 return last_err;
2297 }
2298
2299 static int mlxsw_sp_port_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_port)
2300 {
2301 if (!list_empty(&mlxsw_sp_port->vports_list))
2302 if (mlxsw_sp_port->lagged)
2303 return __mlxsw_sp_port_fdb_flush_lagged(mlxsw_sp_port);
2304 else
2305 return __mlxsw_sp_port_fdb_flush(mlxsw_sp_port);
2306 else
2307 if (mlxsw_sp_port->lagged)
2308 return mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port);
2309 else
2310 return mlxsw_sp_port_fdb_flush_by_port(mlxsw_sp_port);
2311 }
2312
2313 static int mlxsw_sp_vport_fdb_flush(struct mlxsw_sp_port *mlxsw_sp_vport)
2314 {
2315 u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_vport);
2316 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
2317
2318 if (mlxsw_sp_vport->lagged)
2319 return mlxsw_sp_port_fdb_flush_by_lag_id_fid(mlxsw_sp_vport,
2320 fid);
2321 else
2322 return mlxsw_sp_port_fdb_flush_by_port_fid(mlxsw_sp_vport, fid);
2323 }
2324
2325 static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
2326 {
2327 return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
2328 }
2329
2330 static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
2331 {
2332 struct net_device *dev = mlxsw_sp_port->dev;
2333 int err;
2334
2335 /* When port is not bridged untagged packets are tagged with
2336 * PVID=VID=1, thereby creating an implicit VLAN interface in
2337 * the device. Remove it and let bridge code take care of its
2338 * own VLANs.
2339 */
2340 err = mlxsw_sp_port_kill_vid(dev, 0, 1);
2341 if (err)
2342 return err;
2343
2344 mlxsw_sp_port->learning = 1;
2345 mlxsw_sp_port->learning_sync = 1;
2346 mlxsw_sp_port->uc_flood = 1;
2347 mlxsw_sp_port->bridged = 1;
2348
2349 return 0;
2350 }
2351
2352 static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2353 bool flush_fdb)
2354 {
2355 struct net_device *dev = mlxsw_sp_port->dev;
2356
2357 if (flush_fdb && mlxsw_sp_port_fdb_flush(mlxsw_sp_port))
2358 netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2359
2360 mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
2361
2362 mlxsw_sp_port->learning = 0;
2363 mlxsw_sp_port->learning_sync = 0;
2364 mlxsw_sp_port->uc_flood = 0;
2365 mlxsw_sp_port->bridged = 0;
2366
2367 /* Add implicit VLAN interface in the device, so that untagged
2368 * packets will be classified to the default vFID.
2369 */
2370 return mlxsw_sp_port_add_vid(dev, 0, 1);
2371 }
2372
2373 static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2374 struct net_device *br_dev)
2375 {
2376 return !mlxsw_sp->master_bridge.dev ||
2377 mlxsw_sp->master_bridge.dev == br_dev;
2378 }
2379
2380 static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2381 struct net_device *br_dev)
2382 {
2383 mlxsw_sp->master_bridge.dev = br_dev;
2384 mlxsw_sp->master_bridge.ref_count++;
2385 }
2386
2387 static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2388 struct net_device *br_dev)
2389 {
2390 if (--mlxsw_sp->master_bridge.ref_count == 0)
2391 mlxsw_sp->master_bridge.dev = NULL;
2392 }
2393
2394 static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2395 {
2396 char sldr_pl[MLXSW_REG_SLDR_LEN];
2397
2398 mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2399 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2400 }
2401
2402 static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2403 {
2404 char sldr_pl[MLXSW_REG_SLDR_LEN];
2405
2406 mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2407 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2408 }
2409
2410 static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2411 u16 lag_id, u8 port_index)
2412 {
2413 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2414 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2415
2416 mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2417 lag_id, port_index);
2418 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2419 }
2420
2421 static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2422 u16 lag_id)
2423 {
2424 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2425 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2426
2427 mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2428 lag_id);
2429 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2430 }
2431
2432 static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2433 u16 lag_id)
2434 {
2435 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2436 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2437
2438 mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2439 lag_id);
2440 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2441 }
2442
2443 static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2444 u16 lag_id)
2445 {
2446 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2447 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2448
2449 mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2450 lag_id);
2451 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2452 }
2453
2454 static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2455 struct net_device *lag_dev,
2456 u16 *p_lag_id)
2457 {
2458 struct mlxsw_sp_upper *lag;
2459 int free_lag_id = -1;
2460 int i;
2461
2462 for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2463 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2464 if (lag->ref_count) {
2465 if (lag->dev == lag_dev) {
2466 *p_lag_id = i;
2467 return 0;
2468 }
2469 } else if (free_lag_id < 0) {
2470 free_lag_id = i;
2471 }
2472 }
2473 if (free_lag_id < 0)
2474 return -EBUSY;
2475 *p_lag_id = free_lag_id;
2476 return 0;
2477 }
2478
2479 static bool
2480 mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2481 struct net_device *lag_dev,
2482 struct netdev_lag_upper_info *lag_upper_info)
2483 {
2484 u16 lag_id;
2485
2486 if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2487 return false;
2488 if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2489 return false;
2490 return true;
2491 }
2492
2493 static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2494 u16 lag_id, u8 *p_port_index)
2495 {
2496 int i;
2497
2498 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2499 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2500 *p_port_index = i;
2501 return 0;
2502 }
2503 }
2504 return -EBUSY;
2505 }
2506
2507 static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2508 struct net_device *lag_dev)
2509 {
2510 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2511 struct mlxsw_sp_upper *lag;
2512 u16 lag_id;
2513 u8 port_index;
2514 int err;
2515
2516 err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2517 if (err)
2518 return err;
2519 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2520 if (!lag->ref_count) {
2521 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2522 if (err)
2523 return err;
2524 lag->dev = lag_dev;
2525 }
2526
2527 err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2528 if (err)
2529 return err;
2530 err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2531 if (err)
2532 goto err_col_port_add;
2533 err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2534 if (err)
2535 goto err_col_port_enable;
2536
2537 mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2538 mlxsw_sp_port->local_port);
2539 mlxsw_sp_port->lag_id = lag_id;
2540 mlxsw_sp_port->lagged = 1;
2541 lag->ref_count++;
2542 return 0;
2543
2544 err_col_port_add:
2545 if (!lag->ref_count)
2546 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2547 err_col_port_enable:
2548 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2549 return err;
2550 }
2551
2552 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2553 struct net_device *br_dev,
2554 bool flush_fdb);
2555
2556 static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2557 struct net_device *lag_dev)
2558 {
2559 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2560 struct mlxsw_sp_port *mlxsw_sp_vport;
2561 struct mlxsw_sp_upper *lag;
2562 u16 lag_id = mlxsw_sp_port->lag_id;
2563 int err;
2564
2565 if (!mlxsw_sp_port->lagged)
2566 return 0;
2567 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2568 WARN_ON(lag->ref_count == 0);
2569
2570 err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2571 if (err)
2572 return err;
2573 err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2574 if (err)
2575 return err;
2576
2577 /* In case we leave a LAG device that has bridges built on top,
2578 * then their teardown sequence is never issued and we need to
2579 * invoke the necessary cleanup routines ourselves.
2580 */
2581 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2582 vport.list) {
2583 struct net_device *br_dev;
2584
2585 if (!mlxsw_sp_vport->bridged)
2586 continue;
2587
2588 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2589 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, false);
2590 }
2591
2592 if (mlxsw_sp_port->bridged) {
2593 mlxsw_sp_port_active_vlans_del(mlxsw_sp_port);
2594 mlxsw_sp_port_bridge_leave(mlxsw_sp_port, false);
2595 mlxsw_sp_master_bridge_dec(mlxsw_sp, NULL);
2596 }
2597
2598 if (lag->ref_count == 1) {
2599 if (mlxsw_sp_port_fdb_flush_by_lag_id(mlxsw_sp_port))
2600 netdev_err(mlxsw_sp_port->dev, "Failed to flush FDB\n");
2601 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2602 if (err)
2603 return err;
2604 }
2605
2606 mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2607 mlxsw_sp_port->local_port);
2608 mlxsw_sp_port->lagged = 0;
2609 lag->ref_count--;
2610 return 0;
2611 }
2612
2613 static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2614 u16 lag_id)
2615 {
2616 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2617 char sldr_pl[MLXSW_REG_SLDR_LEN];
2618
2619 mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2620 mlxsw_sp_port->local_port);
2621 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2622 }
2623
2624 static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2625 u16 lag_id)
2626 {
2627 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2628 char sldr_pl[MLXSW_REG_SLDR_LEN];
2629
2630 mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2631 mlxsw_sp_port->local_port);
2632 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2633 }
2634
2635 static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2636 bool lag_tx_enabled)
2637 {
2638 if (lag_tx_enabled)
2639 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2640 mlxsw_sp_port->lag_id);
2641 else
2642 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2643 mlxsw_sp_port->lag_id);
2644 }
2645
2646 static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2647 struct netdev_lag_lower_state_info *info)
2648 {
2649 return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2650 }
2651
2652 static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2653 struct net_device *vlan_dev)
2654 {
2655 struct mlxsw_sp_port *mlxsw_sp_vport;
2656 u16 vid = vlan_dev_vlan_id(vlan_dev);
2657
2658 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2659 if (!mlxsw_sp_vport) {
2660 WARN_ON(!mlxsw_sp_vport);
2661 return -EINVAL;
2662 }
2663
2664 mlxsw_sp_vport->dev = vlan_dev;
2665
2666 return 0;
2667 }
2668
2669 static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2670 struct net_device *vlan_dev)
2671 {
2672 struct mlxsw_sp_port *mlxsw_sp_vport;
2673 u16 vid = vlan_dev_vlan_id(vlan_dev);
2674
2675 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2676 if (!mlxsw_sp_vport) {
2677 WARN_ON(!mlxsw_sp_vport);
2678 return -EINVAL;
2679 }
2680
2681 /* When removing a VLAN device while still bridged we should first
2682 * remove it from the bridge, as we receive the bridge's notification
2683 * when the vPort is already gone.
2684 */
2685 if (mlxsw_sp_vport->bridged) {
2686 struct net_device *br_dev;
2687
2688 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2689 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev, true);
2690 }
2691
2692 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2693
2694 return 0;
2695 }
2696
2697 static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2698 unsigned long event, void *ptr)
2699 {
2700 struct netdev_notifier_changeupper_info *info;
2701 struct mlxsw_sp_port *mlxsw_sp_port;
2702 struct net_device *upper_dev;
2703 struct mlxsw_sp *mlxsw_sp;
2704 int err;
2705
2706 mlxsw_sp_port = netdev_priv(dev);
2707 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2708 info = ptr;
2709
2710 switch (event) {
2711 case NETDEV_PRECHANGEUPPER:
2712 upper_dev = info->upper_dev;
2713 if (!info->master || !info->linking)
2714 break;
2715 /* HW limitation forbids to put ports to multiple bridges. */
2716 if (netif_is_bridge_master(upper_dev) &&
2717 !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2718 return NOTIFY_BAD;
2719 if (netif_is_lag_master(upper_dev) &&
2720 !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2721 info->upper_info))
2722 return NOTIFY_BAD;
2723 break;
2724 case NETDEV_CHANGEUPPER:
2725 upper_dev = info->upper_dev;
2726 if (is_vlan_dev(upper_dev)) {
2727 if (info->linking) {
2728 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2729 upper_dev);
2730 if (err) {
2731 netdev_err(dev, "Failed to link VLAN device\n");
2732 return NOTIFY_BAD;
2733 }
2734 } else {
2735 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2736 upper_dev);
2737 if (err) {
2738 netdev_err(dev, "Failed to unlink VLAN device\n");
2739 return NOTIFY_BAD;
2740 }
2741 }
2742 } else if (netif_is_bridge_master(upper_dev)) {
2743 if (info->linking) {
2744 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2745 if (err) {
2746 netdev_err(dev, "Failed to join bridge\n");
2747 return NOTIFY_BAD;
2748 }
2749 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
2750 } else {
2751 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port,
2752 true);
2753 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2754 if (err) {
2755 netdev_err(dev, "Failed to leave bridge\n");
2756 return NOTIFY_BAD;
2757 }
2758 }
2759 } else if (netif_is_lag_master(upper_dev)) {
2760 if (info->linking) {
2761 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2762 upper_dev);
2763 if (err) {
2764 netdev_err(dev, "Failed to join link aggregation\n");
2765 return NOTIFY_BAD;
2766 }
2767 } else {
2768 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2769 upper_dev);
2770 if (err) {
2771 netdev_err(dev, "Failed to leave link aggregation\n");
2772 return NOTIFY_BAD;
2773 }
2774 }
2775 }
2776 break;
2777 }
2778
2779 return NOTIFY_DONE;
2780 }
2781
2782 static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2783 unsigned long event, void *ptr)
2784 {
2785 struct netdev_notifier_changelowerstate_info *info;
2786 struct mlxsw_sp_port *mlxsw_sp_port;
2787 int err;
2788
2789 mlxsw_sp_port = netdev_priv(dev);
2790 info = ptr;
2791
2792 switch (event) {
2793 case NETDEV_CHANGELOWERSTATE:
2794 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2795 err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2796 info->lower_state_info);
2797 if (err)
2798 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2799 }
2800 break;
2801 }
2802
2803 return NOTIFY_DONE;
2804 }
2805
2806 static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2807 unsigned long event, void *ptr)
2808 {
2809 switch (event) {
2810 case NETDEV_PRECHANGEUPPER:
2811 case NETDEV_CHANGEUPPER:
2812 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2813 case NETDEV_CHANGELOWERSTATE:
2814 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2815 }
2816
2817 return NOTIFY_DONE;
2818 }
2819
2820 static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2821 unsigned long event, void *ptr)
2822 {
2823 struct net_device *dev;
2824 struct list_head *iter;
2825 int ret;
2826
2827 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2828 if (mlxsw_sp_port_dev_check(dev)) {
2829 ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2830 if (ret == NOTIFY_BAD)
2831 return ret;
2832 }
2833 }
2834
2835 return NOTIFY_DONE;
2836 }
2837
2838 static struct mlxsw_sp_vfid *
2839 mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2840 const struct net_device *br_dev)
2841 {
2842 struct mlxsw_sp_vfid *vfid;
2843
2844 list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2845 if (vfid->br_dev == br_dev)
2846 return vfid;
2847 }
2848
2849 return NULL;
2850 }
2851
2852 static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2853 {
2854 return vfid - MLXSW_SP_VFID_PORT_MAX;
2855 }
2856
2857 static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2858 {
2859 return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2860 }
2861
2862 static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2863 {
2864 return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2865 MLXSW_SP_VFID_BR_MAX);
2866 }
2867
2868 static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2869 struct net_device *br_dev)
2870 {
2871 struct device *dev = mlxsw_sp->bus_info->dev;
2872 struct mlxsw_sp_vfid *vfid;
2873 u16 n_vfid;
2874 int err;
2875
2876 n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2877 if (n_vfid == MLXSW_SP_VFID_MAX) {
2878 dev_err(dev, "No available vFIDs\n");
2879 return ERR_PTR(-ERANGE);
2880 }
2881
2882 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2883 if (err) {
2884 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2885 return ERR_PTR(err);
2886 }
2887
2888 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2889 if (!vfid)
2890 goto err_allocate_vfid;
2891
2892 vfid->vfid = n_vfid;
2893 vfid->br_dev = br_dev;
2894
2895 list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2896 set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2897
2898 return vfid;
2899
2900 err_allocate_vfid:
2901 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2902 return ERR_PTR(-ENOMEM);
2903 }
2904
2905 static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2906 struct mlxsw_sp_vfid *vfid)
2907 {
2908 u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2909
2910 clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2911 list_del(&vfid->list);
2912
2913 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2914
2915 kfree(vfid);
2916 }
2917
2918 static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2919 struct net_device *br_dev,
2920 bool flush_fdb)
2921 {
2922 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2923 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2924 struct net_device *dev = mlxsw_sp_vport->dev;
2925 struct mlxsw_sp_vfid *vfid, *new_vfid;
2926 int err;
2927
2928 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2929 if (!vfid) {
2930 WARN_ON(!vfid);
2931 return -EINVAL;
2932 }
2933
2934 /* We need a vFID to go back to after leaving the bridge's vFID. */
2935 new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2936 if (!new_vfid) {
2937 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2938 if (IS_ERR(new_vfid)) {
2939 netdev_err(dev, "Failed to create vFID for VID=%d\n",
2940 vid);
2941 return PTR_ERR(new_vfid);
2942 }
2943 }
2944
2945 /* Invalidate existing {Port, VID} to vFID mapping and create a new
2946 * one for the new vFID.
2947 */
2948 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2949 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2950 false,
2951 mlxsw_sp_vfid_to_fid(vfid->vfid),
2952 vid);
2953 if (err) {
2954 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2955 vfid->vfid);
2956 goto err_port_vid_to_fid_invalidate;
2957 }
2958
2959 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2960 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2961 true,
2962 mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2963 vid);
2964 if (err) {
2965 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2966 new_vfid->vfid);
2967 goto err_port_vid_to_fid_validate;
2968 }
2969
2970 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2971 if (err) {
2972 netdev_err(dev, "Failed to disable learning\n");
2973 goto err_port_vid_learning_set;
2974 }
2975
2976 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2977 false);
2978 if (err) {
2979 netdev_err(dev, "Failed clear to clear flooding\n");
2980 goto err_vport_flood_set;
2981 }
2982
2983 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
2984 MLXSW_REG_SPMS_STATE_FORWARDING);
2985 if (err) {
2986 netdev_err(dev, "Failed to set STP state\n");
2987 goto err_port_stp_state_set;
2988 }
2989
2990 if (flush_fdb && mlxsw_sp_vport_fdb_flush(mlxsw_sp_vport))
2991 netdev_err(dev, "Failed to flush FDB\n");
2992
2993 /* Switch between the vFIDs and destroy the old one if needed. */
2994 new_vfid->nr_vports++;
2995 mlxsw_sp_vport->vport.vfid = new_vfid;
2996 vfid->nr_vports--;
2997 if (!vfid->nr_vports)
2998 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2999
3000 mlxsw_sp_vport->learning = 0;
3001 mlxsw_sp_vport->learning_sync = 0;
3002 mlxsw_sp_vport->uc_flood = 0;
3003 mlxsw_sp_vport->bridged = 0;
3004
3005 return 0;
3006
3007 err_port_stp_state_set:
3008 err_vport_flood_set:
3009 err_port_vid_learning_set:
3010 err_port_vid_to_fid_validate:
3011 err_port_vid_to_fid_invalidate:
3012 /* Rollback vFID only if new. */
3013 if (!new_vfid->nr_vports)
3014 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
3015 return err;
3016 }
3017
3018 static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
3019 struct net_device *br_dev)
3020 {
3021 struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
3022 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
3023 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
3024 struct net_device *dev = mlxsw_sp_vport->dev;
3025 struct mlxsw_sp_vfid *vfid;
3026 int err;
3027
3028 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
3029 if (!vfid) {
3030 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
3031 if (IS_ERR(vfid)) {
3032 netdev_err(dev, "Failed to create bridge vFID\n");
3033 return PTR_ERR(vfid);
3034 }
3035 }
3036
3037 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
3038 if (err) {
3039 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
3040 vfid->vfid);
3041 goto err_port_flood_set;
3042 }
3043
3044 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
3045 if (err) {
3046 netdev_err(dev, "Failed to enable learning\n");
3047 goto err_port_vid_learning_set;
3048 }
3049
3050 /* We need to invalidate existing {Port, VID} to vFID mapping and
3051 * create a new one for the bridge's vFID.
3052 */
3053 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3054 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
3055 false,
3056 mlxsw_sp_vfid_to_fid(old_vfid->vfid),
3057 vid);
3058 if (err) {
3059 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
3060 old_vfid->vfid);
3061 goto err_port_vid_to_fid_invalidate;
3062 }
3063
3064 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3065 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
3066 true,
3067 mlxsw_sp_vfid_to_fid(vfid->vfid),
3068 vid);
3069 if (err) {
3070 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
3071 vfid->vfid);
3072 goto err_port_vid_to_fid_validate;
3073 }
3074
3075 /* Switch between the vFIDs and destroy the old one if needed. */
3076 vfid->nr_vports++;
3077 mlxsw_sp_vport->vport.vfid = vfid;
3078 old_vfid->nr_vports--;
3079 if (!old_vfid->nr_vports)
3080 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
3081
3082 mlxsw_sp_vport->learning = 1;
3083 mlxsw_sp_vport->learning_sync = 1;
3084 mlxsw_sp_vport->uc_flood = 1;
3085 mlxsw_sp_vport->bridged = 1;
3086
3087 return 0;
3088
3089 err_port_vid_to_fid_validate:
3090 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
3091 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
3092 mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
3093 err_port_vid_to_fid_invalidate:
3094 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
3095 err_port_vid_learning_set:
3096 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
3097 err_port_flood_set:
3098 if (!vfid->nr_vports)
3099 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
3100 return err;
3101 }
3102
3103 static bool
3104 mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
3105 const struct net_device *br_dev)
3106 {
3107 struct mlxsw_sp_port *mlxsw_sp_vport;
3108
3109 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
3110 vport.list) {
3111 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
3112 return false;
3113 }
3114
3115 return true;
3116 }
3117
3118 static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
3119 unsigned long event, void *ptr,
3120 u16 vid)
3121 {
3122 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
3123 struct netdev_notifier_changeupper_info *info = ptr;
3124 struct mlxsw_sp_port *mlxsw_sp_vport;
3125 struct net_device *upper_dev;
3126 int err;
3127
3128 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
3129
3130 switch (event) {
3131 case NETDEV_PRECHANGEUPPER:
3132 upper_dev = info->upper_dev;
3133 if (!info->master || !info->linking)
3134 break;
3135 if (!netif_is_bridge_master(upper_dev))
3136 return NOTIFY_BAD;
3137 /* We can't have multiple VLAN interfaces configured on
3138 * the same port and being members in the same bridge.
3139 */
3140 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
3141 upper_dev))
3142 return NOTIFY_BAD;
3143 break;
3144 case NETDEV_CHANGEUPPER:
3145 upper_dev = info->upper_dev;
3146 if (!info->master)
3147 break;
3148 if (info->linking) {
3149 if (!mlxsw_sp_vport) {
3150 WARN_ON(!mlxsw_sp_vport);
3151 return NOTIFY_BAD;
3152 }
3153 err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
3154 upper_dev);
3155 if (err) {
3156 netdev_err(dev, "Failed to join bridge\n");
3157 return NOTIFY_BAD;
3158 }
3159 } else {
3160 /* We ignore bridge's unlinking notifications if vPort
3161 * is gone, since we already left the bridge when the
3162 * VLAN device was unlinked from the real device.
3163 */
3164 if (!mlxsw_sp_vport)
3165 return NOTIFY_DONE;
3166 err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
3167 upper_dev, true);
3168 if (err) {
3169 netdev_err(dev, "Failed to leave bridge\n");
3170 return NOTIFY_BAD;
3171 }
3172 }
3173 }
3174
3175 return NOTIFY_DONE;
3176 }
3177
3178 static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
3179 unsigned long event, void *ptr,
3180 u16 vid)
3181 {
3182 struct net_device *dev;
3183 struct list_head *iter;
3184 int ret;
3185
3186 netdev_for_each_lower_dev(lag_dev, dev, iter) {
3187 if (mlxsw_sp_port_dev_check(dev)) {
3188 ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
3189 vid);
3190 if (ret == NOTIFY_BAD)
3191 return ret;
3192 }
3193 }
3194
3195 return NOTIFY_DONE;
3196 }
3197
3198 static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
3199 unsigned long event, void *ptr)
3200 {
3201 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
3202 u16 vid = vlan_dev_vlan_id(vlan_dev);
3203
3204 if (mlxsw_sp_port_dev_check(real_dev))
3205 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
3206 vid);
3207 else if (netif_is_lag_master(real_dev))
3208 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
3209 vid);
3210
3211 return NOTIFY_DONE;
3212 }
3213
3214 static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
3215 unsigned long event, void *ptr)
3216 {
3217 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
3218
3219 if (mlxsw_sp_port_dev_check(dev))
3220 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
3221
3222 if (netif_is_lag_master(dev))
3223 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
3224
3225 if (is_vlan_dev(dev))
3226 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
3227
3228 return NOTIFY_DONE;
3229 }
3230
3231 static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
3232 .notifier_call = mlxsw_sp_netdevice_event,
3233 };
3234
3235 static int __init mlxsw_sp_module_init(void)
3236 {
3237 int err;
3238
3239 register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3240 err = mlxsw_core_driver_register(&mlxsw_sp_driver);
3241 if (err)
3242 goto err_core_driver_register;
3243 return 0;
3244
3245 err_core_driver_register:
3246 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3247 return err;
3248 }
3249
3250 static void __exit mlxsw_sp_module_exit(void)
3251 {
3252 mlxsw_core_driver_unregister(&mlxsw_sp_driver);
3253 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
3254 }
3255
3256 module_init(mlxsw_sp_module_init);
3257 module_exit(mlxsw_sp_module_exit);
3258
3259 MODULE_LICENSE("Dual BSD/GPL");
3260 MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
3261 MODULE_DESCRIPTION("Mellanox Spectrum driver");
3262 MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);
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