blob: c588c65e91f516ee44c6b59d5c3c7bfe71b77acc [file] [log] [blame]
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001/*
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>
Ido Schimmel7f71eb42015-12-15 16:03:37 +010051#include <linux/list.h>
Jiri Pirko56ade8f2015-10-16 14:01:37 +020052#include <net/switchdev.h>
53#include <generated/utsrelease.h>
54
55#include "spectrum.h"
56#include "core.h"
57#include "reg.h"
58#include "port.h"
59#include "trap.h"
60#include "txheader.h"
61
62static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum";
63static const char mlxsw_sp_driver_version[] = "1.0";
64
65/* tx_hdr_version
66 * Tx header version.
67 * Must be set to 1.
68 */
69MLXSW_ITEM32(tx, hdr, version, 0x00, 28, 4);
70
71/* tx_hdr_ctl
72 * Packet control type.
73 * 0 - Ethernet control (e.g. EMADs, LACP)
74 * 1 - Ethernet data
75 */
76MLXSW_ITEM32(tx, hdr, ctl, 0x00, 26, 2);
77
78/* tx_hdr_proto
79 * Packet protocol type. Must be set to 1 (Ethernet).
80 */
81MLXSW_ITEM32(tx, hdr, proto, 0x00, 21, 3);
82
83/* tx_hdr_rx_is_router
84 * Packet is sent from the router. Valid for data packets only.
85 */
86MLXSW_ITEM32(tx, hdr, rx_is_router, 0x00, 19, 1);
87
88/* tx_hdr_fid_valid
89 * Indicates if the 'fid' field is valid and should be used for
90 * forwarding lookup. Valid for data packets only.
91 */
92MLXSW_ITEM32(tx, hdr, fid_valid, 0x00, 16, 1);
93
94/* tx_hdr_swid
95 * Switch partition ID. Must be set to 0.
96 */
97MLXSW_ITEM32(tx, hdr, swid, 0x00, 12, 3);
98
99/* tx_hdr_control_tclass
100 * Indicates if the packet should use the control TClass and not one
101 * of the data TClasses.
102 */
103MLXSW_ITEM32(tx, hdr, control_tclass, 0x00, 6, 1);
104
105/* tx_hdr_etclass
106 * Egress TClass to be used on the egress device on the egress port.
107 */
108MLXSW_ITEM32(tx, hdr, etclass, 0x00, 0, 4);
109
110/* tx_hdr_port_mid
111 * Destination local port for unicast packets.
112 * Destination multicast ID for multicast packets.
113 *
114 * Control packets are directed to a specific egress port, while data
115 * packets are transmitted through the CPU port (0) into the switch partition,
116 * where forwarding rules are applied.
117 */
118MLXSW_ITEM32(tx, hdr, port_mid, 0x04, 16, 16);
119
120/* tx_hdr_fid
121 * Forwarding ID used for L2 forwarding lookup. Valid only if 'fid_valid' is
122 * set, otherwise calculated based on the packet's VID using VID to FID mapping.
123 * Valid for data packets only.
124 */
125MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16);
126
127/* tx_hdr_type
128 * 0 - Data packets
129 * 6 - Control packets
130 */
131MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4);
132
133static void mlxsw_sp_txhdr_construct(struct sk_buff *skb,
134 const struct mlxsw_tx_info *tx_info)
135{
136 char *txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
137
138 memset(txhdr, 0, MLXSW_TXHDR_LEN);
139
140 mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
141 mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
142 mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
143 mlxsw_tx_hdr_swid_set(txhdr, 0);
144 mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
145 mlxsw_tx_hdr_port_mid_set(txhdr, tx_info->local_port);
146 mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
147}
148
149static int mlxsw_sp_base_mac_get(struct mlxsw_sp *mlxsw_sp)
150{
151 char spad_pl[MLXSW_REG_SPAD_LEN];
152 int err;
153
154 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(spad), spad_pl);
155 if (err)
156 return err;
157 mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_sp->base_mac);
158 return 0;
159}
160
161static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port,
162 bool is_up)
163{
164 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
165 char paos_pl[MLXSW_REG_PAOS_LEN];
166
167 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port,
168 is_up ? MLXSW_PORT_ADMIN_STATUS_UP :
169 MLXSW_PORT_ADMIN_STATUS_DOWN);
170 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
171}
172
173static int mlxsw_sp_port_oper_status_get(struct mlxsw_sp_port *mlxsw_sp_port,
174 bool *p_is_up)
175{
176 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
177 char paos_pl[MLXSW_REG_PAOS_LEN];
178 u8 oper_status;
179 int err;
180
181 mlxsw_reg_paos_pack(paos_pl, mlxsw_sp_port->local_port, 0);
182 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(paos), paos_pl);
183 if (err)
184 return err;
185 oper_status = mlxsw_reg_paos_oper_status_get(paos_pl);
186 *p_is_up = oper_status == MLXSW_PORT_ADMIN_STATUS_UP ? true : false;
187 return 0;
188}
189
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200190static int mlxsw_sp_port_dev_addr_set(struct mlxsw_sp_port *mlxsw_sp_port,
191 unsigned char *addr)
192{
193 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
194 char ppad_pl[MLXSW_REG_PPAD_LEN];
195
196 mlxsw_reg_ppad_pack(ppad_pl, true, mlxsw_sp_port->local_port);
197 mlxsw_reg_ppad_mac_memcpy_to(ppad_pl, addr);
198 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppad), ppad_pl);
199}
200
201static int mlxsw_sp_port_dev_addr_init(struct mlxsw_sp_port *mlxsw_sp_port)
202{
203 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
204 unsigned char *addr = mlxsw_sp_port->dev->dev_addr;
205
206 ether_addr_copy(addr, mlxsw_sp->base_mac);
207 addr[ETH_ALEN - 1] += mlxsw_sp_port->local_port;
208 return mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr);
209}
210
211static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
212 u16 vid, enum mlxsw_reg_spms_state state)
213{
214 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
215 char *spms_pl;
216 int err;
217
218 spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
219 if (!spms_pl)
220 return -ENOMEM;
221 mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
222 mlxsw_reg_spms_vid_pack(spms_pl, vid, state);
223 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
224 kfree(spms_pl);
225 return err;
226}
227
228static int mlxsw_sp_port_mtu_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mtu)
229{
230 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
231 char pmtu_pl[MLXSW_REG_PMTU_LEN];
232 int max_mtu;
233 int err;
234
235 mtu += MLXSW_TXHDR_LEN + ETH_HLEN;
236 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, 0);
237 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
238 if (err)
239 return err;
240 max_mtu = mlxsw_reg_pmtu_max_mtu_get(pmtu_pl);
241
242 if (mtu > max_mtu)
243 return -EINVAL;
244
245 mlxsw_reg_pmtu_pack(pmtu_pl, mlxsw_sp_port->local_port, mtu);
246 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pmtu), pmtu_pl);
247}
248
249static int mlxsw_sp_port_swid_set(struct mlxsw_sp_port *mlxsw_sp_port, u8 swid)
250{
251 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
252 char pspa_pl[MLXSW_REG_PSPA_LEN];
253
254 mlxsw_reg_pspa_pack(pspa_pl, swid, mlxsw_sp_port->local_port);
255 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pspa), pspa_pl);
256}
257
258static int mlxsw_sp_port_vp_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
259 bool enable)
260{
261 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
262 char svpe_pl[MLXSW_REG_SVPE_LEN];
263
264 mlxsw_reg_svpe_pack(svpe_pl, mlxsw_sp_port->local_port, enable);
265 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svpe), svpe_pl);
266}
267
268int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
269 enum mlxsw_reg_svfa_mt mt, bool valid, u16 fid,
270 u16 vid)
271{
272 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
273 char svfa_pl[MLXSW_REG_SVFA_LEN];
274
275 mlxsw_reg_svfa_pack(svfa_pl, mlxsw_sp_port->local_port, mt, valid,
276 fid, vid);
277 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(svfa), svfa_pl);
278}
279
280static int mlxsw_sp_port_vid_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
281 u16 vid, bool learn_enable)
282{
283 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
284 char *spvmlr_pl;
285 int err;
286
287 spvmlr_pl = kmalloc(MLXSW_REG_SPVMLR_LEN, GFP_KERNEL);
288 if (!spvmlr_pl)
289 return -ENOMEM;
290 mlxsw_reg_spvmlr_pack(spvmlr_pl, mlxsw_sp_port->local_port, vid, vid,
291 learn_enable);
292 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvmlr), spvmlr_pl);
293 kfree(spvmlr_pl);
294 return err;
295}
296
297static int
298mlxsw_sp_port_system_port_mapping_set(struct mlxsw_sp_port *mlxsw_sp_port)
299{
300 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
301 char sspr_pl[MLXSW_REG_SSPR_LEN];
302
303 mlxsw_reg_sspr_pack(sspr_pl, mlxsw_sp_port->local_port);
304 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sspr), sspr_pl);
305}
306
307static int mlxsw_sp_port_module_check(struct mlxsw_sp_port *mlxsw_sp_port,
308 bool *p_usable)
309{
310 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
311 char pmlp_pl[MLXSW_REG_PMLP_LEN];
312 int err;
313
314 mlxsw_reg_pmlp_pack(pmlp_pl, mlxsw_sp_port->local_port);
315 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(pmlp), pmlp_pl);
316 if (err)
317 return err;
318 *p_usable = mlxsw_reg_pmlp_width_get(pmlp_pl) ? true : false;
319 return 0;
320}
321
322static int mlxsw_sp_port_open(struct net_device *dev)
323{
324 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
325 int err;
326
327 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
328 if (err)
329 return err;
330 netif_start_queue(dev);
331 return 0;
332}
333
334static int mlxsw_sp_port_stop(struct net_device *dev)
335{
336 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
337
338 netif_stop_queue(dev);
339 return mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
340}
341
342static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb,
343 struct net_device *dev)
344{
345 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
346 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
347 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
348 const struct mlxsw_tx_info tx_info = {
349 .local_port = mlxsw_sp_port->local_port,
350 .is_emad = false,
351 };
352 u64 len;
353 int err;
354
355 if (mlxsw_core_skb_transmit_busy(mlxsw_sp, &tx_info))
356 return NETDEV_TX_BUSY;
357
358 if (unlikely(skb_headroom(skb) < MLXSW_TXHDR_LEN)) {
359 struct sk_buff *skb_orig = skb;
360
361 skb = skb_realloc_headroom(skb, MLXSW_TXHDR_LEN);
362 if (!skb) {
363 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
364 dev_kfree_skb_any(skb_orig);
365 return NETDEV_TX_OK;
366 }
367 }
368
369 if (eth_skb_pad(skb)) {
370 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
371 return NETDEV_TX_OK;
372 }
373
374 mlxsw_sp_txhdr_construct(skb, &tx_info);
375 len = skb->len;
376 /* Due to a race we might fail here because of a full queue. In that
377 * unlikely case we simply drop the packet.
378 */
379 err = mlxsw_core_skb_transmit(mlxsw_sp, skb, &tx_info);
380
381 if (!err) {
382 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
383 u64_stats_update_begin(&pcpu_stats->syncp);
384 pcpu_stats->tx_packets++;
385 pcpu_stats->tx_bytes += len;
386 u64_stats_update_end(&pcpu_stats->syncp);
387 } else {
388 this_cpu_inc(mlxsw_sp_port->pcpu_stats->tx_dropped);
389 dev_kfree_skb_any(skb);
390 }
391 return NETDEV_TX_OK;
392}
393
Jiri Pirkoc5b9b512015-12-03 12:12:22 +0100394static void mlxsw_sp_set_rx_mode(struct net_device *dev)
395{
396}
397
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200398static int mlxsw_sp_port_set_mac_address(struct net_device *dev, void *p)
399{
400 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
401 struct sockaddr *addr = p;
402 int err;
403
404 if (!is_valid_ether_addr(addr->sa_data))
405 return -EADDRNOTAVAIL;
406
407 err = mlxsw_sp_port_dev_addr_set(mlxsw_sp_port, addr->sa_data);
408 if (err)
409 return err;
410 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
411 return 0;
412}
413
414static int mlxsw_sp_port_change_mtu(struct net_device *dev, int mtu)
415{
416 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
417 int err;
418
419 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, mtu);
420 if (err)
421 return err;
422 dev->mtu = mtu;
423 return 0;
424}
425
426static struct rtnl_link_stats64 *
427mlxsw_sp_port_get_stats64(struct net_device *dev,
428 struct rtnl_link_stats64 *stats)
429{
430 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
431 struct mlxsw_sp_port_pcpu_stats *p;
432 u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
433 u32 tx_dropped = 0;
434 unsigned int start;
435 int i;
436
437 for_each_possible_cpu(i) {
438 p = per_cpu_ptr(mlxsw_sp_port->pcpu_stats, i);
439 do {
440 start = u64_stats_fetch_begin_irq(&p->syncp);
441 rx_packets = p->rx_packets;
442 rx_bytes = p->rx_bytes;
443 tx_packets = p->tx_packets;
444 tx_bytes = p->tx_bytes;
445 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
446
447 stats->rx_packets += rx_packets;
448 stats->rx_bytes += rx_bytes;
449 stats->tx_packets += tx_packets;
450 stats->tx_bytes += tx_bytes;
451 /* tx_dropped is u32, updated without syncp protection. */
452 tx_dropped += p->tx_dropped;
453 }
454 stats->tx_dropped = tx_dropped;
455 return stats;
456}
457
458int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
459 u16 vid_end, bool is_member, bool untagged)
460{
461 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
462 char *spvm_pl;
463 int err;
464
465 spvm_pl = kmalloc(MLXSW_REG_SPVM_LEN, GFP_KERNEL);
466 if (!spvm_pl)
467 return -ENOMEM;
468
469 mlxsw_reg_spvm_pack(spvm_pl, mlxsw_sp_port->local_port, vid_begin,
470 vid_end, is_member, untagged);
471 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvm), spvm_pl);
472 kfree(spvm_pl);
473 return err;
474}
475
476static int mlxsw_sp_port_vp_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
477{
478 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
479 u16 vid, last_visited_vid;
480 int err;
481
482 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
483 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, vid,
484 vid);
485 if (err) {
486 last_visited_vid = vid;
487 goto err_port_vid_to_fid_set;
488 }
489 }
490
491 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, true);
492 if (err) {
493 last_visited_vid = VLAN_N_VID;
494 goto err_port_vid_to_fid_set;
495 }
496
497 return 0;
498
499err_port_vid_to_fid_set:
500 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
501 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, vid,
502 vid);
503 return err;
504}
505
506static int mlxsw_sp_port_vlan_mode_trans(struct mlxsw_sp_port *mlxsw_sp_port)
507{
508 enum mlxsw_reg_svfa_mt mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
509 u16 vid;
510 int err;
511
512 err = mlxsw_sp_port_vp_mode_set(mlxsw_sp_port, false);
513 if (err)
514 return err;
515
516 for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
517 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false,
518 vid, vid);
519 if (err)
520 return err;
521 }
522
523 return 0;
524}
525
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100526static struct mlxsw_sp_vfid *
527mlxsw_sp_vfid_find(const struct mlxsw_sp *mlxsw_sp, u16 vid)
528{
529 struct mlxsw_sp_vfid *vfid;
530
531 list_for_each_entry(vfid, &mlxsw_sp->port_vfids.list, list) {
532 if (vfid->vid == vid)
533 return vfid;
534 }
535
536 return NULL;
537}
538
539static u16 mlxsw_sp_avail_vfid_get(const struct mlxsw_sp *mlxsw_sp)
540{
541 return find_first_zero_bit(mlxsw_sp->port_vfids.mapped,
542 MLXSW_SP_VFID_PORT_MAX);
543}
544
545static int __mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp, u16 vfid)
546{
547 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
548 char sfmr_pl[MLXSW_REG_SFMR_LEN];
549
550 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, 0);
551 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
552}
553
554static void __mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp, u16 vfid)
555{
556 u16 fid = mlxsw_sp_vfid_to_fid(vfid);
557 char sfmr_pl[MLXSW_REG_SFMR_LEN];
558
559 mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID, fid, 0);
560 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
561}
562
563static struct mlxsw_sp_vfid *mlxsw_sp_vfid_create(struct mlxsw_sp *mlxsw_sp,
564 u16 vid)
565{
566 struct device *dev = mlxsw_sp->bus_info->dev;
567 struct mlxsw_sp_vfid *vfid;
568 u16 n_vfid;
569 int err;
570
571 n_vfid = mlxsw_sp_avail_vfid_get(mlxsw_sp);
572 if (n_vfid == MLXSW_SP_VFID_PORT_MAX) {
573 dev_err(dev, "No available vFIDs\n");
574 return ERR_PTR(-ERANGE);
575 }
576
577 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
578 if (err) {
579 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
580 return ERR_PTR(err);
581 }
582
583 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
584 if (!vfid)
585 goto err_allocate_vfid;
586
587 vfid->vfid = n_vfid;
588 vfid->vid = vid;
589
590 list_add(&vfid->list, &mlxsw_sp->port_vfids.list);
591 set_bit(n_vfid, mlxsw_sp->port_vfids.mapped);
592
593 return vfid;
594
595err_allocate_vfid:
596 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
597 return ERR_PTR(-ENOMEM);
598}
599
600static void mlxsw_sp_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
601 struct mlxsw_sp_vfid *vfid)
602{
603 clear_bit(vfid->vfid, mlxsw_sp->port_vfids.mapped);
604 list_del(&vfid->list);
605
606 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
607
608 kfree(vfid);
609}
610
611static struct mlxsw_sp_port *
612mlxsw_sp_port_vport_create(struct mlxsw_sp_port *mlxsw_sp_port,
613 struct mlxsw_sp_vfid *vfid)
614{
615 struct mlxsw_sp_port *mlxsw_sp_vport;
616
617 mlxsw_sp_vport = kzalloc(sizeof(*mlxsw_sp_vport), GFP_KERNEL);
618 if (!mlxsw_sp_vport)
619 return NULL;
620
621 /* dev will be set correctly after the VLAN device is linked
622 * with the real device. In case of bridge SELF invocation, dev
623 * will remain as is.
624 */
625 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
626 mlxsw_sp_vport->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
627 mlxsw_sp_vport->local_port = mlxsw_sp_port->local_port;
628 mlxsw_sp_vport->stp_state = BR_STATE_FORWARDING;
Ido Schimmel272c4472015-12-15 16:03:47 +0100629 mlxsw_sp_vport->lagged = mlxsw_sp_port->lagged;
630 mlxsw_sp_vport->lag_id = mlxsw_sp_port->lag_id;
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100631 mlxsw_sp_vport->vport.vfid = vfid;
632 mlxsw_sp_vport->vport.vid = vfid->vid;
633
634 list_add(&mlxsw_sp_vport->vport.list, &mlxsw_sp_port->vports_list);
635
636 return mlxsw_sp_vport;
637}
638
639static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
640{
641 list_del(&mlxsw_sp_vport->vport.list);
642 kfree(mlxsw_sp_vport);
643}
644
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200645int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
646 u16 vid)
647{
648 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
649 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100650 struct mlxsw_sp_port *mlxsw_sp_vport;
651 struct mlxsw_sp_vfid *vfid;
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200652 int err;
653
654 /* VLAN 0 is added to HW filter when device goes up, but it is
655 * reserved in our case, so simply return.
656 */
657 if (!vid)
658 return 0;
659
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100660 if (mlxsw_sp_port_vport_find(mlxsw_sp_port, vid)) {
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200661 netdev_warn(dev, "VID=%d already configured\n", vid);
662 return 0;
663 }
664
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100665 vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
666 if (!vfid) {
667 vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
668 if (IS_ERR(vfid)) {
669 netdev_err(dev, "Failed to create vFID for VID=%d\n",
670 vid);
671 return PTR_ERR(vfid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200672 }
673 }
674
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100675 mlxsw_sp_vport = mlxsw_sp_port_vport_create(mlxsw_sp_port, vfid);
676 if (!mlxsw_sp_vport) {
677 netdev_err(dev, "Failed to create vPort for VID=%d\n", vid);
678 err = -ENOMEM;
679 goto err_port_vport_create;
680 }
681
682 if (!vfid->nr_vports) {
683 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid,
Ido Schimmel19ae6122015-12-15 16:03:39 +0100684 true, false);
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100685 if (err) {
686 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
687 vfid->vfid);
688 goto err_vport_flood_set;
689 }
690 }
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200691
692 /* When adding the first VLAN interface on a bridged port we need to
693 * transition all the active 802.1Q bridge VLANs to use explicit
694 * {Port, VID} to FID mappings and set the port's mode to Virtual mode.
695 */
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100696 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200697 err = mlxsw_sp_port_vp_mode_trans(mlxsw_sp_port);
698 if (err) {
699 netdev_err(dev, "Failed to set to Virtual mode\n");
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100700 goto err_port_vp_mode_trans;
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200701 }
702 }
703
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100704 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200705 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100706 true,
707 mlxsw_sp_vfid_to_fid(vfid->vfid),
708 vid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200709 if (err) {
710 netdev_err(dev, "Failed to map {Port, VID=%d} to vFID=%d\n",
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100711 vid, vfid->vfid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200712 goto err_port_vid_to_fid_set;
713 }
714
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100715 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200716 if (err) {
717 netdev_err(dev, "Failed to disable learning for VID=%d\n", vid);
718 goto err_port_vid_learning_set;
719 }
720
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100721 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, true, false);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200722 if (err) {
723 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
724 vid);
725 goto err_port_add_vid;
726 }
727
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100728 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200729 MLXSW_REG_SPMS_STATE_FORWARDING);
730 if (err) {
731 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
732 goto err_port_stp_state_set;
733 }
734
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100735 vfid->nr_vports++;
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200736
737 return 0;
738
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200739err_port_stp_state_set:
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100740 mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200741err_port_add_vid:
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100742 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200743err_port_vid_learning_set:
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100744 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200745 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100746 mlxsw_sp_vfid_to_fid(vfid->vfid), vid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200747err_port_vid_to_fid_set:
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100748 if (list_is_singular(&mlxsw_sp_port->vports_list))
749 mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
750err_port_vp_mode_trans:
751 if (!vfid->nr_vports)
Ido Schimmel19ae6122015-12-15 16:03:39 +0100752 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
753 false);
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100754err_vport_flood_set:
755 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
756err_port_vport_create:
757 if (!vfid->nr_vports)
758 mlxsw_sp_vfid_destroy(mlxsw_sp, vfid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200759 return err;
760}
761
762int mlxsw_sp_port_kill_vid(struct net_device *dev,
763 __be16 __always_unused proto, u16 vid)
764{
765 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100766 struct mlxsw_sp_port *mlxsw_sp_vport;
767 struct mlxsw_sp_vfid *vfid;
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200768 int err;
769
770 /* VLAN 0 is removed from HW filter when device goes down, but
771 * it is reserved in our case, so simply return.
772 */
773 if (!vid)
774 return 0;
775
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100776 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
777 if (!mlxsw_sp_vport) {
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200778 netdev_warn(dev, "VID=%d does not exist\n", vid);
779 return 0;
780 }
781
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100782 vfid = mlxsw_sp_vport->vport.vfid;
783
784 err = mlxsw_sp_port_stp_state_set(mlxsw_sp_vport, vid,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200785 MLXSW_REG_SPMS_STATE_DISCARDING);
786 if (err) {
787 netdev_err(dev, "Failed to set STP state for VID=%d\n", vid);
788 return err;
789 }
790
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100791 err = mlxsw_sp_port_vlan_set(mlxsw_sp_vport, vid, vid, false, false);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200792 if (err) {
793 netdev_err(dev, "Failed to set VLAN membership for VID=%d\n",
794 vid);
795 return err;
796 }
797
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100798 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200799 if (err) {
800 netdev_err(dev, "Failed to enable learning for VID=%d\n", vid);
801 return err;
802 }
803
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100804 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200805 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100806 false,
807 mlxsw_sp_vfid_to_fid(vfid->vfid),
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200808 vid);
809 if (err) {
810 netdev_err(dev, "Failed to invalidate {Port, VID=%d} to vFID=%d mapping\n",
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100811 vid, vfid->vfid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200812 return err;
813 }
814
815 /* When removing the last VLAN interface on a bridged port we need to
816 * transition all active 802.1Q bridge VLANs to use VID to FID
817 * mappings and set port's mode to VLAN mode.
818 */
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100819 if (list_is_singular(&mlxsw_sp_port->vports_list)) {
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200820 err = mlxsw_sp_port_vlan_mode_trans(mlxsw_sp_port);
821 if (err) {
822 netdev_err(dev, "Failed to set to VLAN mode\n");
823 return err;
824 }
825 }
826
Ido Schimmel7f71eb42015-12-15 16:03:37 +0100827 vfid->nr_vports--;
828 mlxsw_sp_port_vport_destroy(mlxsw_sp_vport);
829
830 /* Destroy the vFID if no vPorts are assigned to it anymore. */
831 if (!vfid->nr_vports)
832 mlxsw_sp_vfid_destroy(mlxsw_sp_port->mlxsw_sp, vfid);
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200833
834 return 0;
835}
836
837static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
838 .ndo_open = mlxsw_sp_port_open,
839 .ndo_stop = mlxsw_sp_port_stop,
840 .ndo_start_xmit = mlxsw_sp_port_xmit,
Jiri Pirkoc5b9b512015-12-03 12:12:22 +0100841 .ndo_set_rx_mode = mlxsw_sp_set_rx_mode,
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200842 .ndo_set_mac_address = mlxsw_sp_port_set_mac_address,
843 .ndo_change_mtu = mlxsw_sp_port_change_mtu,
844 .ndo_get_stats64 = mlxsw_sp_port_get_stats64,
845 .ndo_vlan_rx_add_vid = mlxsw_sp_port_add_vid,
846 .ndo_vlan_rx_kill_vid = mlxsw_sp_port_kill_vid,
847 .ndo_fdb_add = switchdev_port_fdb_add,
848 .ndo_fdb_del = switchdev_port_fdb_del,
849 .ndo_fdb_dump = switchdev_port_fdb_dump,
850 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
851 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
852 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
853};
854
855static void mlxsw_sp_port_get_drvinfo(struct net_device *dev,
856 struct ethtool_drvinfo *drvinfo)
857{
858 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
859 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
860
861 strlcpy(drvinfo->driver, mlxsw_sp_driver_name, sizeof(drvinfo->driver));
862 strlcpy(drvinfo->version, mlxsw_sp_driver_version,
863 sizeof(drvinfo->version));
864 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
865 "%d.%d.%d",
866 mlxsw_sp->bus_info->fw_rev.major,
867 mlxsw_sp->bus_info->fw_rev.minor,
868 mlxsw_sp->bus_info->fw_rev.subminor);
869 strlcpy(drvinfo->bus_info, mlxsw_sp->bus_info->device_name,
870 sizeof(drvinfo->bus_info));
871}
872
873struct mlxsw_sp_port_hw_stats {
874 char str[ETH_GSTRING_LEN];
875 u64 (*getter)(char *payload);
876};
877
878static const struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_stats[] = {
879 {
880 .str = "a_frames_transmitted_ok",
881 .getter = mlxsw_reg_ppcnt_a_frames_transmitted_ok_get,
882 },
883 {
884 .str = "a_frames_received_ok",
885 .getter = mlxsw_reg_ppcnt_a_frames_received_ok_get,
886 },
887 {
888 .str = "a_frame_check_sequence_errors",
889 .getter = mlxsw_reg_ppcnt_a_frame_check_sequence_errors_get,
890 },
891 {
892 .str = "a_alignment_errors",
893 .getter = mlxsw_reg_ppcnt_a_alignment_errors_get,
894 },
895 {
896 .str = "a_octets_transmitted_ok",
897 .getter = mlxsw_reg_ppcnt_a_octets_transmitted_ok_get,
898 },
899 {
900 .str = "a_octets_received_ok",
901 .getter = mlxsw_reg_ppcnt_a_octets_received_ok_get,
902 },
903 {
904 .str = "a_multicast_frames_xmitted_ok",
905 .getter = mlxsw_reg_ppcnt_a_multicast_frames_xmitted_ok_get,
906 },
907 {
908 .str = "a_broadcast_frames_xmitted_ok",
909 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_xmitted_ok_get,
910 },
911 {
912 .str = "a_multicast_frames_received_ok",
913 .getter = mlxsw_reg_ppcnt_a_multicast_frames_received_ok_get,
914 },
915 {
916 .str = "a_broadcast_frames_received_ok",
917 .getter = mlxsw_reg_ppcnt_a_broadcast_frames_received_ok_get,
918 },
919 {
920 .str = "a_in_range_length_errors",
921 .getter = mlxsw_reg_ppcnt_a_in_range_length_errors_get,
922 },
923 {
924 .str = "a_out_of_range_length_field",
925 .getter = mlxsw_reg_ppcnt_a_out_of_range_length_field_get,
926 },
927 {
928 .str = "a_frame_too_long_errors",
929 .getter = mlxsw_reg_ppcnt_a_frame_too_long_errors_get,
930 },
931 {
932 .str = "a_symbol_error_during_carrier",
933 .getter = mlxsw_reg_ppcnt_a_symbol_error_during_carrier_get,
934 },
935 {
936 .str = "a_mac_control_frames_transmitted",
937 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_transmitted_get,
938 },
939 {
940 .str = "a_mac_control_frames_received",
941 .getter = mlxsw_reg_ppcnt_a_mac_control_frames_received_get,
942 },
943 {
944 .str = "a_unsupported_opcodes_received",
945 .getter = mlxsw_reg_ppcnt_a_unsupported_opcodes_received_get,
946 },
947 {
948 .str = "a_pause_mac_ctrl_frames_received",
949 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_received_get,
950 },
951 {
952 .str = "a_pause_mac_ctrl_frames_xmitted",
953 .getter = mlxsw_reg_ppcnt_a_pause_mac_ctrl_frames_transmitted_get,
954 },
955};
956
957#define MLXSW_SP_PORT_HW_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_stats)
958
959static void mlxsw_sp_port_get_strings(struct net_device *dev,
960 u32 stringset, u8 *data)
961{
962 u8 *p = data;
963 int i;
964
965 switch (stringset) {
966 case ETH_SS_STATS:
967 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++) {
968 memcpy(p, mlxsw_sp_port_hw_stats[i].str,
969 ETH_GSTRING_LEN);
970 p += ETH_GSTRING_LEN;
971 }
972 break;
973 }
974}
975
Ido Schimmel3a66ee32015-11-27 13:45:55 +0100976static int mlxsw_sp_port_set_phys_id(struct net_device *dev,
977 enum ethtool_phys_id_state state)
978{
979 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
980 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
981 char mlcr_pl[MLXSW_REG_MLCR_LEN];
982 bool active;
983
984 switch (state) {
985 case ETHTOOL_ID_ACTIVE:
986 active = true;
987 break;
988 case ETHTOOL_ID_INACTIVE:
989 active = false;
990 break;
991 default:
992 return -EOPNOTSUPP;
993 }
994
995 mlxsw_reg_mlcr_pack(mlcr_pl, mlxsw_sp_port->local_port, active);
996 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mlcr), mlcr_pl);
997}
998
Jiri Pirko56ade8f2015-10-16 14:01:37 +0200999static void mlxsw_sp_port_get_stats(struct net_device *dev,
1000 struct ethtool_stats *stats, u64 *data)
1001{
1002 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1003 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1004 char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
1005 int i;
1006 int err;
1007
1008 mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port);
1009 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
1010 for (i = 0; i < MLXSW_SP_PORT_HW_STATS_LEN; i++)
1011 data[i] = !err ? mlxsw_sp_port_hw_stats[i].getter(ppcnt_pl) : 0;
1012}
1013
1014static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)
1015{
1016 switch (sset) {
1017 case ETH_SS_STATS:
1018 return MLXSW_SP_PORT_HW_STATS_LEN;
1019 default:
1020 return -EOPNOTSUPP;
1021 }
1022}
1023
1024struct mlxsw_sp_port_link_mode {
1025 u32 mask;
1026 u32 supported;
1027 u32 advertised;
1028 u32 speed;
1029};
1030
1031static const struct mlxsw_sp_port_link_mode mlxsw_sp_port_link_mode[] = {
1032 {
1033 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_T,
1034 .supported = SUPPORTED_100baseT_Full,
1035 .advertised = ADVERTISED_100baseT_Full,
1036 .speed = 100,
1037 },
1038 {
1039 .mask = MLXSW_REG_PTYS_ETH_SPEED_100BASE_TX,
1040 .speed = 100,
1041 },
1042 {
1043 .mask = MLXSW_REG_PTYS_ETH_SPEED_SGMII |
1044 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX,
1045 .supported = SUPPORTED_1000baseKX_Full,
1046 .advertised = ADVERTISED_1000baseKX_Full,
1047 .speed = 1000,
1048 },
1049 {
1050 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_T,
1051 .supported = SUPPORTED_10000baseT_Full,
1052 .advertised = ADVERTISED_10000baseT_Full,
1053 .speed = 10000,
1054 },
1055 {
1056 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CX4 |
1057 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4,
1058 .supported = SUPPORTED_10000baseKX4_Full,
1059 .advertised = ADVERTISED_10000baseKX4_Full,
1060 .speed = 10000,
1061 },
1062 {
1063 .mask = MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1064 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1065 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1066 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_ER_LR,
1067 .supported = SUPPORTED_10000baseKR_Full,
1068 .advertised = ADVERTISED_10000baseKR_Full,
1069 .speed = 10000,
1070 },
1071 {
1072 .mask = MLXSW_REG_PTYS_ETH_SPEED_20GBASE_KR2,
1073 .supported = SUPPORTED_20000baseKR2_Full,
1074 .advertised = ADVERTISED_20000baseKR2_Full,
1075 .speed = 20000,
1076 },
1077 {
1078 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4,
1079 .supported = SUPPORTED_40000baseCR4_Full,
1080 .advertised = ADVERTISED_40000baseCR4_Full,
1081 .speed = 40000,
1082 },
1083 {
1084 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4,
1085 .supported = SUPPORTED_40000baseKR4_Full,
1086 .advertised = ADVERTISED_40000baseKR4_Full,
1087 .speed = 40000,
1088 },
1089 {
1090 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4,
1091 .supported = SUPPORTED_40000baseSR4_Full,
1092 .advertised = ADVERTISED_40000baseSR4_Full,
1093 .speed = 40000,
1094 },
1095 {
1096 .mask = MLXSW_REG_PTYS_ETH_SPEED_40GBASE_LR4_ER4,
1097 .supported = SUPPORTED_40000baseLR4_Full,
1098 .advertised = ADVERTISED_40000baseLR4_Full,
1099 .speed = 40000,
1100 },
1101 {
1102 .mask = MLXSW_REG_PTYS_ETH_SPEED_25GBASE_CR |
1103 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_KR |
1104 MLXSW_REG_PTYS_ETH_SPEED_25GBASE_SR,
1105 .speed = 25000,
1106 },
1107 {
1108 .mask = MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR4 |
1109 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_CR2 |
1110 MLXSW_REG_PTYS_ETH_SPEED_50GBASE_KR2,
1111 .speed = 50000,
1112 },
1113 {
1114 .mask = MLXSW_REG_PTYS_ETH_SPEED_56GBASE_R4,
1115 .supported = SUPPORTED_56000baseKR4_Full,
1116 .advertised = ADVERTISED_56000baseKR4_Full,
1117 .speed = 56000,
1118 },
1119 {
1120 .mask = MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4 |
1121 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1122 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1123 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_LR4_ER4,
1124 .speed = 100000,
1125 },
1126};
1127
1128#define MLXSW_SP_PORT_LINK_MODE_LEN ARRAY_SIZE(mlxsw_sp_port_link_mode)
1129
1130static u32 mlxsw_sp_from_ptys_supported_port(u32 ptys_eth_proto)
1131{
1132 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1133 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1134 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1135 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1136 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1137 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1138 return SUPPORTED_FIBRE;
1139
1140 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1141 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1142 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1143 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4 |
1144 MLXSW_REG_PTYS_ETH_SPEED_1000BASE_KX))
1145 return SUPPORTED_Backplane;
1146 return 0;
1147}
1148
1149static u32 mlxsw_sp_from_ptys_supported_link(u32 ptys_eth_proto)
1150{
1151 u32 modes = 0;
1152 int i;
1153
1154 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1155 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1156 modes |= mlxsw_sp_port_link_mode[i].supported;
1157 }
1158 return modes;
1159}
1160
1161static u32 mlxsw_sp_from_ptys_advert_link(u32 ptys_eth_proto)
1162{
1163 u32 modes = 0;
1164 int i;
1165
1166 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1167 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask)
1168 modes |= mlxsw_sp_port_link_mode[i].advertised;
1169 }
1170 return modes;
1171}
1172
1173static void mlxsw_sp_from_ptys_speed_duplex(bool carrier_ok, u32 ptys_eth_proto,
1174 struct ethtool_cmd *cmd)
1175{
1176 u32 speed = SPEED_UNKNOWN;
1177 u8 duplex = DUPLEX_UNKNOWN;
1178 int i;
1179
1180 if (!carrier_ok)
1181 goto out;
1182
1183 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1184 if (ptys_eth_proto & mlxsw_sp_port_link_mode[i].mask) {
1185 speed = mlxsw_sp_port_link_mode[i].speed;
1186 duplex = DUPLEX_FULL;
1187 break;
1188 }
1189 }
1190out:
1191 ethtool_cmd_speed_set(cmd, speed);
1192 cmd->duplex = duplex;
1193}
1194
1195static u8 mlxsw_sp_port_connector_port(u32 ptys_eth_proto)
1196{
1197 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_SR |
1198 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_SR4 |
1199 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_SR4 |
1200 MLXSW_REG_PTYS_ETH_SPEED_SGMII))
1201 return PORT_FIBRE;
1202
1203 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_CR |
1204 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_CR4 |
1205 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_CR4))
1206 return PORT_DA;
1207
1208 if (ptys_eth_proto & (MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KR |
1209 MLXSW_REG_PTYS_ETH_SPEED_10GBASE_KX4 |
1210 MLXSW_REG_PTYS_ETH_SPEED_40GBASE_KR4 |
1211 MLXSW_REG_PTYS_ETH_SPEED_100GBASE_KR4))
1212 return PORT_NONE;
1213
1214 return PORT_OTHER;
1215}
1216
1217static int mlxsw_sp_port_get_settings(struct net_device *dev,
1218 struct ethtool_cmd *cmd)
1219{
1220 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1221 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1222 char ptys_pl[MLXSW_REG_PTYS_LEN];
1223 u32 eth_proto_cap;
1224 u32 eth_proto_admin;
1225 u32 eth_proto_oper;
1226 int err;
1227
1228 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1229 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1230 if (err) {
1231 netdev_err(dev, "Failed to get proto");
1232 return err;
1233 }
1234 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap,
1235 &eth_proto_admin, &eth_proto_oper);
1236
1237 cmd->supported = mlxsw_sp_from_ptys_supported_port(eth_proto_cap) |
1238 mlxsw_sp_from_ptys_supported_link(eth_proto_cap) |
1239 SUPPORTED_Pause | SUPPORTED_Asym_Pause;
1240 cmd->advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_admin);
1241 mlxsw_sp_from_ptys_speed_duplex(netif_carrier_ok(dev),
1242 eth_proto_oper, cmd);
1243
1244 eth_proto_oper = eth_proto_oper ? eth_proto_oper : eth_proto_cap;
1245 cmd->port = mlxsw_sp_port_connector_port(eth_proto_oper);
1246 cmd->lp_advertising = mlxsw_sp_from_ptys_advert_link(eth_proto_oper);
1247
1248 cmd->transceiver = XCVR_INTERNAL;
1249 return 0;
1250}
1251
1252static u32 mlxsw_sp_to_ptys_advert_link(u32 advertising)
1253{
1254 u32 ptys_proto = 0;
1255 int i;
1256
1257 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1258 if (advertising & mlxsw_sp_port_link_mode[i].advertised)
1259 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1260 }
1261 return ptys_proto;
1262}
1263
1264static u32 mlxsw_sp_to_ptys_speed(u32 speed)
1265{
1266 u32 ptys_proto = 0;
1267 int i;
1268
1269 for (i = 0; i < MLXSW_SP_PORT_LINK_MODE_LEN; i++) {
1270 if (speed == mlxsw_sp_port_link_mode[i].speed)
1271 ptys_proto |= mlxsw_sp_port_link_mode[i].mask;
1272 }
1273 return ptys_proto;
1274}
1275
1276static int mlxsw_sp_port_set_settings(struct net_device *dev,
1277 struct ethtool_cmd *cmd)
1278{
1279 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
1280 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
1281 char ptys_pl[MLXSW_REG_PTYS_LEN];
1282 u32 speed;
1283 u32 eth_proto_new;
1284 u32 eth_proto_cap;
1285 u32 eth_proto_admin;
1286 bool is_up;
1287 int err;
1288
1289 speed = ethtool_cmd_speed(cmd);
1290
1291 eth_proto_new = cmd->autoneg == AUTONEG_ENABLE ?
1292 mlxsw_sp_to_ptys_advert_link(cmd->advertising) :
1293 mlxsw_sp_to_ptys_speed(speed);
1294
1295 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, 0);
1296 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1297 if (err) {
1298 netdev_err(dev, "Failed to get proto");
1299 return err;
1300 }
1301 mlxsw_reg_ptys_unpack(ptys_pl, &eth_proto_cap, &eth_proto_admin, NULL);
1302
1303 eth_proto_new = eth_proto_new & eth_proto_cap;
1304 if (!eth_proto_new) {
1305 netdev_err(dev, "Not supported proto admin requested");
1306 return -EINVAL;
1307 }
1308 if (eth_proto_new == eth_proto_admin)
1309 return 0;
1310
1311 mlxsw_reg_ptys_pack(ptys_pl, mlxsw_sp_port->local_port, eth_proto_new);
1312 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptys), ptys_pl);
1313 if (err) {
1314 netdev_err(dev, "Failed to set proto admin");
1315 return err;
1316 }
1317
1318 err = mlxsw_sp_port_oper_status_get(mlxsw_sp_port, &is_up);
1319 if (err) {
1320 netdev_err(dev, "Failed to get oper status");
1321 return err;
1322 }
1323 if (!is_up)
1324 return 0;
1325
1326 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1327 if (err) {
1328 netdev_err(dev, "Failed to set admin status");
1329 return err;
1330 }
1331
1332 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
1333 if (err) {
1334 netdev_err(dev, "Failed to set admin status");
1335 return err;
1336 }
1337
1338 return 0;
1339}
1340
1341static const struct ethtool_ops mlxsw_sp_port_ethtool_ops = {
1342 .get_drvinfo = mlxsw_sp_port_get_drvinfo,
1343 .get_link = ethtool_op_get_link,
1344 .get_strings = mlxsw_sp_port_get_strings,
Ido Schimmel3a66ee32015-11-27 13:45:55 +01001345 .set_phys_id = mlxsw_sp_port_set_phys_id,
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001346 .get_ethtool_stats = mlxsw_sp_port_get_stats,
1347 .get_sset_count = mlxsw_sp_port_get_sset_count,
1348 .get_settings = mlxsw_sp_port_get_settings,
1349 .set_settings = mlxsw_sp_port_set_settings,
1350};
1351
1352static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1353{
1354 struct mlxsw_sp_port *mlxsw_sp_port;
1355 struct net_device *dev;
1356 bool usable;
Ido Schimmelbd40e9d2015-12-15 16:03:36 +01001357 size_t bytes;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001358 int err;
1359
1360 dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
1361 if (!dev)
1362 return -ENOMEM;
1363 mlxsw_sp_port = netdev_priv(dev);
1364 mlxsw_sp_port->dev = dev;
1365 mlxsw_sp_port->mlxsw_sp = mlxsw_sp;
1366 mlxsw_sp_port->local_port = local_port;
1367 mlxsw_sp_port->learning = 1;
1368 mlxsw_sp_port->learning_sync = 1;
Ido Schimmel02930382015-10-28 10:16:58 +01001369 mlxsw_sp_port->uc_flood = 1;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001370 mlxsw_sp_port->pvid = 1;
Ido Schimmelbd40e9d2015-12-15 16:03:36 +01001371 bytes = DIV_ROUND_UP(VLAN_N_VID, BITS_PER_BYTE);
1372 mlxsw_sp_port->active_vlans = kzalloc(bytes, GFP_KERNEL);
1373 if (!mlxsw_sp_port->active_vlans) {
1374 err = -ENOMEM;
1375 goto err_port_active_vlans_alloc;
1376 }
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001377 INIT_LIST_HEAD(&mlxsw_sp_port->vports_list);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001378
1379 mlxsw_sp_port->pcpu_stats =
1380 netdev_alloc_pcpu_stats(struct mlxsw_sp_port_pcpu_stats);
1381 if (!mlxsw_sp_port->pcpu_stats) {
1382 err = -ENOMEM;
1383 goto err_alloc_stats;
1384 }
1385
1386 dev->netdev_ops = &mlxsw_sp_port_netdev_ops;
1387 dev->ethtool_ops = &mlxsw_sp_port_ethtool_ops;
1388
1389 err = mlxsw_sp_port_dev_addr_init(mlxsw_sp_port);
1390 if (err) {
1391 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unable to init port mac address\n",
1392 mlxsw_sp_port->local_port);
1393 goto err_dev_addr_init;
1394 }
1395
1396 netif_carrier_off(dev);
1397
1398 dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
1399 NETIF_F_HW_VLAN_CTAG_FILTER;
1400
1401 /* Each packet needs to have a Tx header (metadata) on top all other
1402 * headers.
1403 */
1404 dev->hard_header_len += MLXSW_TXHDR_LEN;
1405
1406 err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
1407 if (err) {
1408 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to check module\n",
1409 mlxsw_sp_port->local_port);
1410 goto err_port_module_check;
1411 }
1412
1413 if (!usable) {
1414 dev_dbg(mlxsw_sp->bus_info->dev, "Port %d: Not usable, skipping initialization\n",
1415 mlxsw_sp_port->local_port);
1416 goto port_not_usable;
1417 }
1418
1419 err = mlxsw_sp_port_system_port_mapping_set(mlxsw_sp_port);
1420 if (err) {
1421 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set system port mapping\n",
1422 mlxsw_sp_port->local_port);
1423 goto err_port_system_port_mapping_set;
1424 }
1425
1426 err = mlxsw_sp_port_swid_set(mlxsw_sp_port, 0);
1427 if (err) {
1428 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set SWID\n",
1429 mlxsw_sp_port->local_port);
1430 goto err_port_swid_set;
1431 }
1432
1433 err = mlxsw_sp_port_mtu_set(mlxsw_sp_port, ETH_DATA_LEN);
1434 if (err) {
1435 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set MTU\n",
1436 mlxsw_sp_port->local_port);
1437 goto err_port_mtu_set;
1438 }
1439
1440 err = mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
1441 if (err)
1442 goto err_port_admin_status_set;
1443
1444 err = mlxsw_sp_port_buffers_init(mlxsw_sp_port);
1445 if (err) {
1446 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize buffers\n",
1447 mlxsw_sp_port->local_port);
1448 goto err_port_buffers_init;
1449 }
1450
1451 mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
1452 err = register_netdev(dev);
1453 if (err) {
1454 dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
1455 mlxsw_sp_port->local_port);
1456 goto err_register_netdev;
1457 }
1458
1459 err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
1460 if (err)
1461 goto err_port_vlan_init;
1462
1463 mlxsw_sp->ports[local_port] = mlxsw_sp_port;
1464 return 0;
1465
1466err_port_vlan_init:
1467 unregister_netdev(dev);
1468err_register_netdev:
1469err_port_buffers_init:
1470err_port_admin_status_set:
1471err_port_mtu_set:
1472err_port_swid_set:
1473err_port_system_port_mapping_set:
1474port_not_usable:
1475err_port_module_check:
1476err_dev_addr_init:
1477 free_percpu(mlxsw_sp_port->pcpu_stats);
1478err_alloc_stats:
Ido Schimmelbd40e9d2015-12-15 16:03:36 +01001479 kfree(mlxsw_sp_port->active_vlans);
1480err_port_active_vlans_alloc:
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001481 free_netdev(dev);
1482 return err;
1483}
1484
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001485static void mlxsw_sp_port_vports_fini(struct mlxsw_sp_port *mlxsw_sp_port)
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001486{
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001487 struct net_device *dev = mlxsw_sp_port->dev;
1488 struct mlxsw_sp_port *mlxsw_sp_vport, *tmp;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001489
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001490 list_for_each_entry_safe(mlxsw_sp_vport, tmp,
1491 &mlxsw_sp_port->vports_list, vport.list) {
1492 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
1493
1494 /* vPorts created for VLAN devices should already be gone
1495 * by now, since we unregistered the port netdev.
1496 */
1497 WARN_ON(is_vlan_dev(mlxsw_sp_vport->dev));
1498 mlxsw_sp_port_kill_vid(dev, 0, vid);
1499 }
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001500}
1501
1502static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
1503{
1504 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1505
1506 if (!mlxsw_sp_port)
1507 return;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001508 unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001509 mlxsw_sp_port_vports_fini(mlxsw_sp_port);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001510 mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
1511 free_percpu(mlxsw_sp_port->pcpu_stats);
Ido Schimmelbd40e9d2015-12-15 16:03:36 +01001512 kfree(mlxsw_sp_port->active_vlans);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001513 free_netdev(mlxsw_sp_port->dev);
1514}
1515
1516static void mlxsw_sp_ports_remove(struct mlxsw_sp *mlxsw_sp)
1517{
1518 int i;
1519
1520 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
1521 mlxsw_sp_port_remove(mlxsw_sp, i);
1522 kfree(mlxsw_sp->ports);
1523}
1524
1525static int mlxsw_sp_ports_create(struct mlxsw_sp *mlxsw_sp)
1526{
1527 size_t alloc_size;
1528 int i;
1529 int err;
1530
1531 alloc_size = sizeof(struct mlxsw_sp_port *) * MLXSW_PORT_MAX_PORTS;
1532 mlxsw_sp->ports = kzalloc(alloc_size, GFP_KERNEL);
1533 if (!mlxsw_sp->ports)
1534 return -ENOMEM;
1535
1536 for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++) {
1537 err = mlxsw_sp_port_create(mlxsw_sp, i);
1538 if (err)
1539 goto err_port_create;
1540 }
1541 return 0;
1542
1543err_port_create:
1544 for (i--; i >= 1; i--)
1545 mlxsw_sp_port_remove(mlxsw_sp, i);
1546 kfree(mlxsw_sp->ports);
1547 return err;
1548}
1549
1550static void mlxsw_sp_pude_event_func(const struct mlxsw_reg_info *reg,
1551 char *pude_pl, void *priv)
1552{
1553 struct mlxsw_sp *mlxsw_sp = priv;
1554 struct mlxsw_sp_port *mlxsw_sp_port;
1555 enum mlxsw_reg_pude_oper_status status;
1556 u8 local_port;
1557
1558 local_port = mlxsw_reg_pude_local_port_get(pude_pl);
1559 mlxsw_sp_port = mlxsw_sp->ports[local_port];
1560 if (!mlxsw_sp_port) {
1561 dev_warn(mlxsw_sp->bus_info->dev, "Port %d: Link event received for non-existent port\n",
1562 local_port);
1563 return;
1564 }
1565
1566 status = mlxsw_reg_pude_oper_status_get(pude_pl);
1567 if (status == MLXSW_PORT_OPER_STATUS_UP) {
1568 netdev_info(mlxsw_sp_port->dev, "link up\n");
1569 netif_carrier_on(mlxsw_sp_port->dev);
1570 } else {
1571 netdev_info(mlxsw_sp_port->dev, "link down\n");
1572 netif_carrier_off(mlxsw_sp_port->dev);
1573 }
1574}
1575
1576static struct mlxsw_event_listener mlxsw_sp_pude_event = {
1577 .func = mlxsw_sp_pude_event_func,
1578 .trap_id = MLXSW_TRAP_ID_PUDE,
1579};
1580
1581static int mlxsw_sp_event_register(struct mlxsw_sp *mlxsw_sp,
1582 enum mlxsw_event_trap_id trap_id)
1583{
1584 struct mlxsw_event_listener *el;
1585 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1586 int err;
1587
1588 switch (trap_id) {
1589 case MLXSW_TRAP_ID_PUDE:
1590 el = &mlxsw_sp_pude_event;
1591 break;
1592 }
1593 err = mlxsw_core_event_listener_register(mlxsw_sp->core, el, mlxsw_sp);
1594 if (err)
1595 return err;
1596
1597 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD, trap_id);
1598 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1599 if (err)
1600 goto err_event_trap_set;
1601
1602 return 0;
1603
1604err_event_trap_set:
1605 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1606 return err;
1607}
1608
1609static void mlxsw_sp_event_unregister(struct mlxsw_sp *mlxsw_sp,
1610 enum mlxsw_event_trap_id trap_id)
1611{
1612 struct mlxsw_event_listener *el;
1613
1614 switch (trap_id) {
1615 case MLXSW_TRAP_ID_PUDE:
1616 el = &mlxsw_sp_pude_event;
1617 break;
1618 }
1619 mlxsw_core_event_listener_unregister(mlxsw_sp->core, el, mlxsw_sp);
1620}
1621
1622static void mlxsw_sp_rx_listener_func(struct sk_buff *skb, u8 local_port,
1623 void *priv)
1624{
1625 struct mlxsw_sp *mlxsw_sp = priv;
1626 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port];
1627 struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
1628
1629 if (unlikely(!mlxsw_sp_port)) {
1630 dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
1631 local_port);
1632 return;
1633 }
1634
1635 skb->dev = mlxsw_sp_port->dev;
1636
1637 pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
1638 u64_stats_update_begin(&pcpu_stats->syncp);
1639 pcpu_stats->rx_packets++;
1640 pcpu_stats->rx_bytes += skb->len;
1641 u64_stats_update_end(&pcpu_stats->syncp);
1642
1643 skb->protocol = eth_type_trans(skb, skb->dev);
1644 netif_receive_skb(skb);
1645}
1646
1647static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
1648 {
1649 .func = mlxsw_sp_rx_listener_func,
1650 .local_port = MLXSW_PORT_DONT_CARE,
1651 .trap_id = MLXSW_TRAP_ID_FDB_MC,
1652 },
1653 /* Traps for specific L2 packet types, not trapped as FDB MC */
1654 {
1655 .func = mlxsw_sp_rx_listener_func,
1656 .local_port = MLXSW_PORT_DONT_CARE,
1657 .trap_id = MLXSW_TRAP_ID_STP,
1658 },
1659 {
1660 .func = mlxsw_sp_rx_listener_func,
1661 .local_port = MLXSW_PORT_DONT_CARE,
1662 .trap_id = MLXSW_TRAP_ID_LACP,
1663 },
1664 {
1665 .func = mlxsw_sp_rx_listener_func,
1666 .local_port = MLXSW_PORT_DONT_CARE,
1667 .trap_id = MLXSW_TRAP_ID_EAPOL,
1668 },
1669 {
1670 .func = mlxsw_sp_rx_listener_func,
1671 .local_port = MLXSW_PORT_DONT_CARE,
1672 .trap_id = MLXSW_TRAP_ID_LLDP,
1673 },
1674 {
1675 .func = mlxsw_sp_rx_listener_func,
1676 .local_port = MLXSW_PORT_DONT_CARE,
1677 .trap_id = MLXSW_TRAP_ID_MMRP,
1678 },
1679 {
1680 .func = mlxsw_sp_rx_listener_func,
1681 .local_port = MLXSW_PORT_DONT_CARE,
1682 .trap_id = MLXSW_TRAP_ID_MVRP,
1683 },
1684 {
1685 .func = mlxsw_sp_rx_listener_func,
1686 .local_port = MLXSW_PORT_DONT_CARE,
1687 .trap_id = MLXSW_TRAP_ID_RPVST,
1688 },
1689 {
1690 .func = mlxsw_sp_rx_listener_func,
1691 .local_port = MLXSW_PORT_DONT_CARE,
1692 .trap_id = MLXSW_TRAP_ID_DHCP,
1693 },
1694 {
1695 .func = mlxsw_sp_rx_listener_func,
1696 .local_port = MLXSW_PORT_DONT_CARE,
1697 .trap_id = MLXSW_TRAP_ID_IGMP_QUERY,
1698 },
1699 {
1700 .func = mlxsw_sp_rx_listener_func,
1701 .local_port = MLXSW_PORT_DONT_CARE,
1702 .trap_id = MLXSW_TRAP_ID_IGMP_V1_REPORT,
1703 },
1704 {
1705 .func = mlxsw_sp_rx_listener_func,
1706 .local_port = MLXSW_PORT_DONT_CARE,
1707 .trap_id = MLXSW_TRAP_ID_IGMP_V2_REPORT,
1708 },
1709 {
1710 .func = mlxsw_sp_rx_listener_func,
1711 .local_port = MLXSW_PORT_DONT_CARE,
1712 .trap_id = MLXSW_TRAP_ID_IGMP_V2_LEAVE,
1713 },
1714 {
1715 .func = mlxsw_sp_rx_listener_func,
1716 .local_port = MLXSW_PORT_DONT_CARE,
1717 .trap_id = MLXSW_TRAP_ID_IGMP_V3_REPORT,
1718 },
1719};
1720
1721static int mlxsw_sp_traps_init(struct mlxsw_sp *mlxsw_sp)
1722{
1723 char htgt_pl[MLXSW_REG_HTGT_LEN];
1724 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1725 int i;
1726 int err;
1727
1728 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_RX);
1729 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1730 if (err)
1731 return err;
1732
1733 mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_CTRL);
1734 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
1735 if (err)
1736 return err;
1737
1738 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1739 err = mlxsw_core_rx_listener_register(mlxsw_sp->core,
1740 &mlxsw_sp_rx_listener[i],
1741 mlxsw_sp);
1742 if (err)
1743 goto err_rx_listener_register;
1744
1745 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_TRAP_TO_CPU,
1746 mlxsw_sp_rx_listener[i].trap_id);
1747 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1748 if (err)
1749 goto err_rx_trap_set;
1750 }
1751 return 0;
1752
1753err_rx_trap_set:
1754 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1755 &mlxsw_sp_rx_listener[i],
1756 mlxsw_sp);
1757err_rx_listener_register:
1758 for (i--; i >= 0; i--) {
1759 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1760 mlxsw_sp_rx_listener[i].trap_id);
1761 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1762
1763 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1764 &mlxsw_sp_rx_listener[i],
1765 mlxsw_sp);
1766 }
1767 return err;
1768}
1769
1770static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
1771{
1772 char hpkt_pl[MLXSW_REG_HPKT_LEN];
1773 int i;
1774
1775 for (i = 0; i < ARRAY_SIZE(mlxsw_sp_rx_listener); i++) {
1776 mlxsw_reg_hpkt_pack(hpkt_pl, MLXSW_REG_HPKT_ACTION_FORWARD,
1777 mlxsw_sp_rx_listener[i].trap_id);
1778 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(hpkt), hpkt_pl);
1779
1780 mlxsw_core_rx_listener_unregister(mlxsw_sp->core,
1781 &mlxsw_sp_rx_listener[i],
1782 mlxsw_sp);
1783 }
1784}
1785
1786static int __mlxsw_sp_flood_init(struct mlxsw_core *mlxsw_core,
1787 enum mlxsw_reg_sfgc_type type,
1788 enum mlxsw_reg_sfgc_bridge_type bridge_type)
1789{
1790 enum mlxsw_flood_table_type table_type;
1791 enum mlxsw_sp_flood_table flood_table;
1792 char sfgc_pl[MLXSW_REG_SFGC_LEN];
1793
Ido Schimmel19ae6122015-12-15 16:03:39 +01001794 if (bridge_type == MLXSW_REG_SFGC_BRIDGE_TYPE_VFID)
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001795 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
Ido Schimmel19ae6122015-12-15 16:03:39 +01001796 else
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001797 table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
Ido Schimmel19ae6122015-12-15 16:03:39 +01001798
1799 if (type == MLXSW_REG_SFGC_TYPE_UNKNOWN_UNICAST)
1800 flood_table = MLXSW_SP_FLOOD_TABLE_UC;
1801 else
1802 flood_table = MLXSW_SP_FLOOD_TABLE_BM;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001803
1804 mlxsw_reg_sfgc_pack(sfgc_pl, type, bridge_type, table_type,
1805 flood_table);
1806 return mlxsw_reg_write(mlxsw_core, MLXSW_REG(sfgc), sfgc_pl);
1807}
1808
1809static int mlxsw_sp_flood_init(struct mlxsw_sp *mlxsw_sp)
1810{
1811 int type, err;
1812
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001813 for (type = 0; type < MLXSW_REG_SFGC_TYPE_MAX; type++) {
1814 if (type == MLXSW_REG_SFGC_TYPE_RESERVED)
1815 continue;
1816
1817 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1818 MLXSW_REG_SFGC_BRIDGE_TYPE_VFID);
1819 if (err)
1820 return err;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001821
1822 err = __mlxsw_sp_flood_init(mlxsw_sp->core, type,
1823 MLXSW_REG_SFGC_BRIDGE_TYPE_1Q_FID);
1824 if (err)
1825 return err;
1826 }
1827
1828 return 0;
1829}
1830
Jiri Pirko0d65fc12015-12-03 12:12:28 +01001831static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
1832{
1833 char slcr_pl[MLXSW_REG_SLCR_LEN];
1834
1835 mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
1836 MLXSW_REG_SLCR_LAG_HASH_DMAC |
1837 MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
1838 MLXSW_REG_SLCR_LAG_HASH_VLANID |
1839 MLXSW_REG_SLCR_LAG_HASH_SIP |
1840 MLXSW_REG_SLCR_LAG_HASH_DIP |
1841 MLXSW_REG_SLCR_LAG_HASH_SPORT |
1842 MLXSW_REG_SLCR_LAG_HASH_DPORT |
1843 MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
1844 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
1845}
1846
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001847static int mlxsw_sp_init(void *priv, struct mlxsw_core *mlxsw_core,
1848 const struct mlxsw_bus_info *mlxsw_bus_info)
1849{
1850 struct mlxsw_sp *mlxsw_sp = priv;
1851 int err;
1852
1853 mlxsw_sp->core = mlxsw_core;
1854 mlxsw_sp->bus_info = mlxsw_bus_info;
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001855 INIT_LIST_HEAD(&mlxsw_sp->port_vfids.list);
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01001856 INIT_LIST_HEAD(&mlxsw_sp->br_vfids.list);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001857
1858 err = mlxsw_sp_base_mac_get(mlxsw_sp);
1859 if (err) {
1860 dev_err(mlxsw_sp->bus_info->dev, "Failed to get base mac\n");
1861 return err;
1862 }
1863
1864 err = mlxsw_sp_ports_create(mlxsw_sp);
1865 if (err) {
1866 dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n");
Ido Schimmel7f71eb42015-12-15 16:03:37 +01001867 return err;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001868 }
1869
1870 err = mlxsw_sp_event_register(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1871 if (err) {
1872 dev_err(mlxsw_sp->bus_info->dev, "Failed to register for PUDE events\n");
1873 goto err_event_register;
1874 }
1875
1876 err = mlxsw_sp_traps_init(mlxsw_sp);
1877 if (err) {
1878 dev_err(mlxsw_sp->bus_info->dev, "Failed to set traps for RX\n");
1879 goto err_rx_listener_register;
1880 }
1881
1882 err = mlxsw_sp_flood_init(mlxsw_sp);
1883 if (err) {
1884 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize flood tables\n");
1885 goto err_flood_init;
1886 }
1887
1888 err = mlxsw_sp_buffers_init(mlxsw_sp);
1889 if (err) {
1890 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
1891 goto err_buffers_init;
1892 }
1893
Jiri Pirko0d65fc12015-12-03 12:12:28 +01001894 err = mlxsw_sp_lag_init(mlxsw_sp);
1895 if (err) {
1896 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n");
1897 goto err_lag_init;
1898 }
1899
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001900 err = mlxsw_sp_switchdev_init(mlxsw_sp);
1901 if (err) {
1902 dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize switchdev\n");
1903 goto err_switchdev_init;
1904 }
1905
1906 return 0;
1907
1908err_switchdev_init:
Jiri Pirko0d65fc12015-12-03 12:12:28 +01001909err_lag_init:
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001910err_buffers_init:
1911err_flood_init:
1912 mlxsw_sp_traps_fini(mlxsw_sp);
1913err_rx_listener_register:
1914 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1915err_event_register:
1916 mlxsw_sp_ports_remove(mlxsw_sp);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001917 return err;
1918}
1919
1920static void mlxsw_sp_fini(void *priv)
1921{
1922 struct mlxsw_sp *mlxsw_sp = priv;
1923
1924 mlxsw_sp_switchdev_fini(mlxsw_sp);
1925 mlxsw_sp_traps_fini(mlxsw_sp);
1926 mlxsw_sp_event_unregister(mlxsw_sp, MLXSW_TRAP_ID_PUDE);
1927 mlxsw_sp_ports_remove(mlxsw_sp);
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001928}
1929
1930static struct mlxsw_config_profile mlxsw_sp_config_profile = {
1931 .used_max_vepa_channels = 1,
1932 .max_vepa_channels = 0,
1933 .used_max_lag = 1,
Jiri Pirko0d65fc12015-12-03 12:12:28 +01001934 .max_lag = MLXSW_SP_LAG_MAX,
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001935 .used_max_port_per_lag = 1,
Jiri Pirko0d65fc12015-12-03 12:12:28 +01001936 .max_port_per_lag = MLXSW_SP_PORT_PER_LAG_MAX,
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001937 .used_max_mid = 1,
1938 .max_mid = 7000,
1939 .used_max_pgt = 1,
1940 .max_pgt = 0,
1941 .used_max_system_port = 1,
1942 .max_system_port = 64,
1943 .used_max_vlan_groups = 1,
1944 .max_vlan_groups = 127,
1945 .used_max_regions = 1,
1946 .max_regions = 400,
1947 .used_flood_tables = 1,
1948 .used_flood_mode = 1,
1949 .flood_mode = 3,
1950 .max_fid_offset_flood_tables = 2,
1951 .fid_offset_flood_table_size = VLAN_N_VID - 1,
Ido Schimmel19ae6122015-12-15 16:03:39 +01001952 .max_fid_flood_tables = 2,
1953 .fid_flood_table_size = MLXSW_SP_VFID_MAX,
Jiri Pirko56ade8f2015-10-16 14:01:37 +02001954 .used_max_ib_mc = 1,
1955 .max_ib_mc = 0,
1956 .used_max_pkey = 1,
1957 .max_pkey = 0,
1958 .swid_config = {
1959 {
1960 .used_type = 1,
1961 .type = MLXSW_PORT_SWID_TYPE_ETH,
1962 }
1963 },
1964};
1965
1966static struct mlxsw_driver mlxsw_sp_driver = {
1967 .kind = MLXSW_DEVICE_KIND_SPECTRUM,
1968 .owner = THIS_MODULE,
1969 .priv_size = sizeof(struct mlxsw_sp),
1970 .init = mlxsw_sp_init,
1971 .fini = mlxsw_sp_fini,
1972 .txhdr_construct = mlxsw_sp_txhdr_construct,
1973 .txhdr_len = MLXSW_TXHDR_LEN,
1974 .profile = &mlxsw_sp_config_profile,
1975};
1976
1977static bool mlxsw_sp_port_dev_check(const struct net_device *dev)
1978{
1979 return dev->netdev_ops == &mlxsw_sp_port_netdev_ops;
1980}
1981
1982static int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port)
1983{
1984 struct net_device *dev = mlxsw_sp_port->dev;
1985 int err;
1986
1987 /* When port is not bridged untagged packets are tagged with
1988 * PVID=VID=1, thereby creating an implicit VLAN interface in
1989 * the device. Remove it and let bridge code take care of its
1990 * own VLANs.
1991 */
1992 err = mlxsw_sp_port_kill_vid(dev, 0, 1);
1993 if (err)
1994 netdev_err(dev, "Failed to remove VID 1\n");
1995
1996 return err;
1997}
1998
1999static int mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port)
2000{
2001 struct net_device *dev = mlxsw_sp_port->dev;
2002 int err;
2003
2004 /* Add implicit VLAN interface in the device, so that untagged
2005 * packets will be classified to the default vFID.
2006 */
2007 err = mlxsw_sp_port_add_vid(dev, 0, 1);
2008 if (err)
2009 netdev_err(dev, "Failed to add VID 1\n");
2010
2011 return err;
2012}
2013
2014static bool mlxsw_sp_master_bridge_check(struct mlxsw_sp *mlxsw_sp,
2015 struct net_device *br_dev)
2016{
2017 return !mlxsw_sp->master_bridge.dev ||
2018 mlxsw_sp->master_bridge.dev == br_dev;
2019}
2020
2021static void mlxsw_sp_master_bridge_inc(struct mlxsw_sp *mlxsw_sp,
2022 struct net_device *br_dev)
2023{
2024 mlxsw_sp->master_bridge.dev = br_dev;
2025 mlxsw_sp->master_bridge.ref_count++;
2026}
2027
2028static void mlxsw_sp_master_bridge_dec(struct mlxsw_sp *mlxsw_sp,
2029 struct net_device *br_dev)
2030{
2031 if (--mlxsw_sp->master_bridge.ref_count == 0)
2032 mlxsw_sp->master_bridge.dev = NULL;
2033}
2034
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002035static int mlxsw_sp_lag_create(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002036{
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002037 char sldr_pl[MLXSW_REG_SLDR_LEN];
2038
2039 mlxsw_reg_sldr_lag_create_pack(sldr_pl, lag_id);
2040 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2041}
2042
2043static int mlxsw_sp_lag_destroy(struct mlxsw_sp *mlxsw_sp, u16 lag_id)
2044{
2045 char sldr_pl[MLXSW_REG_SLDR_LEN];
2046
2047 mlxsw_reg_sldr_lag_destroy_pack(sldr_pl, lag_id);
2048 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2049}
2050
2051static int mlxsw_sp_lag_col_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2052 u16 lag_id, u8 port_index)
2053{
2054 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2055 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2056
2057 mlxsw_reg_slcor_port_add_pack(slcor_pl, mlxsw_sp_port->local_port,
2058 lag_id, port_index);
2059 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2060}
2061
2062static int mlxsw_sp_lag_col_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2063 u16 lag_id)
2064{
2065 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2066 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2067
2068 mlxsw_reg_slcor_port_remove_pack(slcor_pl, mlxsw_sp_port->local_port,
2069 lag_id);
2070 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2071}
2072
2073static int mlxsw_sp_lag_col_port_enable(struct mlxsw_sp_port *mlxsw_sp_port,
2074 u16 lag_id)
2075{
2076 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2077 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2078
2079 mlxsw_reg_slcor_col_enable_pack(slcor_pl, mlxsw_sp_port->local_port,
2080 lag_id);
2081 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2082}
2083
2084static int mlxsw_sp_lag_col_port_disable(struct mlxsw_sp_port *mlxsw_sp_port,
2085 u16 lag_id)
2086{
2087 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2088 char slcor_pl[MLXSW_REG_SLCOR_LEN];
2089
2090 mlxsw_reg_slcor_col_disable_pack(slcor_pl, mlxsw_sp_port->local_port,
2091 lag_id);
2092 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcor), slcor_pl);
2093}
2094
2095static int mlxsw_sp_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2096 struct net_device *lag_dev,
2097 u16 *p_lag_id)
2098{
2099 struct mlxsw_sp_upper *lag;
2100 int free_lag_id = -1;
2101 int i;
2102
2103 for (i = 0; i < MLXSW_SP_LAG_MAX; i++) {
2104 lag = mlxsw_sp_lag_get(mlxsw_sp, i);
2105 if (lag->ref_count) {
2106 if (lag->dev == lag_dev) {
2107 *p_lag_id = i;
2108 return 0;
2109 }
2110 } else if (free_lag_id < 0) {
2111 free_lag_id = i;
2112 }
2113 }
2114 if (free_lag_id < 0)
2115 return -EBUSY;
2116 *p_lag_id = free_lag_id;
2117 return 0;
2118}
2119
2120static bool
2121mlxsw_sp_master_lag_check(struct mlxsw_sp *mlxsw_sp,
2122 struct net_device *lag_dev,
2123 struct netdev_lag_upper_info *lag_upper_info)
2124{
2125 u16 lag_id;
2126
2127 if (mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id) != 0)
2128 return false;
2129 if (lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH)
2130 return false;
2131 return true;
2132}
2133
2134static int mlxsw_sp_port_lag_index_get(struct mlxsw_sp *mlxsw_sp,
2135 u16 lag_id, u8 *p_port_index)
2136{
2137 int i;
2138
2139 for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; i++) {
2140 if (!mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i)) {
2141 *p_port_index = i;
2142 return 0;
2143 }
2144 }
2145 return -EBUSY;
2146}
2147
2148static int mlxsw_sp_port_lag_join(struct mlxsw_sp_port *mlxsw_sp_port,
2149 struct net_device *lag_dev)
2150{
2151 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2152 struct mlxsw_sp_upper *lag;
2153 u16 lag_id;
2154 u8 port_index;
2155 int err;
2156
2157 err = mlxsw_sp_lag_index_get(mlxsw_sp, lag_dev, &lag_id);
2158 if (err)
2159 return err;
2160 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2161 if (!lag->ref_count) {
2162 err = mlxsw_sp_lag_create(mlxsw_sp, lag_id);
2163 if (err)
2164 return err;
2165 lag->dev = lag_dev;
2166 }
2167
2168 err = mlxsw_sp_port_lag_index_get(mlxsw_sp, lag_id, &port_index);
2169 if (err)
2170 return err;
2171 err = mlxsw_sp_lag_col_port_add(mlxsw_sp_port, lag_id, port_index);
2172 if (err)
2173 goto err_col_port_add;
2174 err = mlxsw_sp_lag_col_port_enable(mlxsw_sp_port, lag_id);
2175 if (err)
2176 goto err_col_port_enable;
2177
2178 mlxsw_core_lag_mapping_set(mlxsw_sp->core, lag_id, port_index,
2179 mlxsw_sp_port->local_port);
2180 mlxsw_sp_port->lag_id = lag_id;
2181 mlxsw_sp_port->lagged = 1;
2182 lag->ref_count++;
2183 return 0;
2184
2185err_col_port_add:
2186 if (!lag->ref_count)
2187 mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2188err_col_port_enable:
2189 mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
2190 return err;
2191}
2192
2193static int mlxsw_sp_port_lag_leave(struct mlxsw_sp_port *mlxsw_sp_port,
2194 struct net_device *lag_dev)
2195{
2196 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2197 struct mlxsw_sp_upper *lag;
2198 u16 lag_id = mlxsw_sp_port->lag_id;
2199 int err;
2200
2201 if (!mlxsw_sp_port->lagged)
2202 return 0;
2203 lag = mlxsw_sp_lag_get(mlxsw_sp, lag_id);
2204 WARN_ON(lag->ref_count == 0);
2205
2206 err = mlxsw_sp_lag_col_port_disable(mlxsw_sp_port, lag_id);
2207 if (err)
2208 return err;
Dan Carpenter82a06422015-12-09 13:33:51 +03002209 err = mlxsw_sp_lag_col_port_remove(mlxsw_sp_port, lag_id);
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002210 if (err)
2211 return err;
2212
2213 if (lag->ref_count == 1) {
2214 err = mlxsw_sp_lag_destroy(mlxsw_sp, lag_id);
2215 if (err)
2216 return err;
2217 }
2218
2219 mlxsw_core_lag_mapping_clear(mlxsw_sp->core, lag_id,
2220 mlxsw_sp_port->local_port);
2221 mlxsw_sp_port->lagged = 0;
2222 lag->ref_count--;
2223 return 0;
2224}
2225
Jiri Pirko74581202015-12-03 12:12:30 +01002226static int mlxsw_sp_lag_dist_port_add(struct mlxsw_sp_port *mlxsw_sp_port,
2227 u16 lag_id)
2228{
2229 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2230 char sldr_pl[MLXSW_REG_SLDR_LEN];
2231
2232 mlxsw_reg_sldr_lag_add_port_pack(sldr_pl, lag_id,
2233 mlxsw_sp_port->local_port);
2234 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2235}
2236
2237static int mlxsw_sp_lag_dist_port_remove(struct mlxsw_sp_port *mlxsw_sp_port,
2238 u16 lag_id)
2239{
2240 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2241 char sldr_pl[MLXSW_REG_SLDR_LEN];
2242
2243 mlxsw_reg_sldr_lag_remove_port_pack(sldr_pl, lag_id,
2244 mlxsw_sp_port->local_port);
2245 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sldr), sldr_pl);
2246}
2247
2248static int mlxsw_sp_port_lag_tx_en_set(struct mlxsw_sp_port *mlxsw_sp_port,
2249 bool lag_tx_enabled)
2250{
2251 if (lag_tx_enabled)
2252 return mlxsw_sp_lag_dist_port_add(mlxsw_sp_port,
2253 mlxsw_sp_port->lag_id);
2254 else
2255 return mlxsw_sp_lag_dist_port_remove(mlxsw_sp_port,
2256 mlxsw_sp_port->lag_id);
2257}
2258
2259static int mlxsw_sp_port_lag_changed(struct mlxsw_sp_port *mlxsw_sp_port,
2260 struct netdev_lag_lower_state_info *info)
2261{
2262 return mlxsw_sp_port_lag_tx_en_set(mlxsw_sp_port, info->tx_enabled);
2263}
2264
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002265static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2266 struct net_device *br_dev);
2267
Ido Schimmel9589a7b52015-12-15 16:03:43 +01002268static int mlxsw_sp_port_vlan_link(struct mlxsw_sp_port *mlxsw_sp_port,
2269 struct net_device *vlan_dev)
2270{
2271 struct mlxsw_sp_port *mlxsw_sp_vport;
2272 u16 vid = vlan_dev_vlan_id(vlan_dev);
2273
2274 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2275 if (!mlxsw_sp_vport) {
2276 WARN_ON(!mlxsw_sp_vport);
2277 return -EINVAL;
2278 }
2279
2280 mlxsw_sp_vport->dev = vlan_dev;
2281
2282 return 0;
2283}
2284
2285static int mlxsw_sp_port_vlan_unlink(struct mlxsw_sp_port *mlxsw_sp_port,
2286 struct net_device *vlan_dev)
2287{
2288 struct mlxsw_sp_port *mlxsw_sp_vport;
2289 u16 vid = vlan_dev_vlan_id(vlan_dev);
2290
2291 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2292 if (!mlxsw_sp_vport) {
2293 WARN_ON(!mlxsw_sp_vport);
2294 return -EINVAL;
2295 }
2296
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002297 /* When removing a VLAN device while still bridged we should first
2298 * remove it from the bridge, as we receive the bridge's notification
2299 * when the vPort is already gone.
2300 */
2301 if (mlxsw_sp_vport->bridged) {
2302 struct net_device *br_dev;
2303
2304 br_dev = mlxsw_sp_vport_br_get(mlxsw_sp_vport);
2305 mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport, br_dev);
2306 }
2307
Ido Schimmel9589a7b52015-12-15 16:03:43 +01002308 mlxsw_sp_vport->dev = mlxsw_sp_port->dev;
2309
2310 return 0;
2311}
2312
Jiri Pirko74581202015-12-03 12:12:30 +01002313static int mlxsw_sp_netdevice_port_upper_event(struct net_device *dev,
2314 unsigned long event, void *ptr)
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002315{
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002316 struct netdev_notifier_changeupper_info *info;
2317 struct mlxsw_sp_port *mlxsw_sp_port;
2318 struct net_device *upper_dev;
2319 struct mlxsw_sp *mlxsw_sp;
2320 int err;
2321
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002322 mlxsw_sp_port = netdev_priv(dev);
2323 mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
2324 info = ptr;
2325
2326 switch (event) {
2327 case NETDEV_PRECHANGEUPPER:
2328 upper_dev = info->upper_dev;
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002329 if (!info->master || !info->linking)
2330 break;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002331 /* HW limitation forbids to put ports to multiple bridges. */
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002332 if (netif_is_bridge_master(upper_dev) &&
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002333 !mlxsw_sp_master_bridge_check(mlxsw_sp, upper_dev))
2334 return NOTIFY_BAD;
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002335 if (netif_is_lag_master(upper_dev) &&
2336 !mlxsw_sp_master_lag_check(mlxsw_sp, upper_dev,
2337 info->upper_info))
2338 return NOTIFY_BAD;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002339 break;
2340 case NETDEV_CHANGEUPPER:
2341 upper_dev = info->upper_dev;
Ido Schimmel9589a7b52015-12-15 16:03:43 +01002342 if (is_vlan_dev(upper_dev)) {
2343 if (info->linking) {
2344 err = mlxsw_sp_port_vlan_link(mlxsw_sp_port,
2345 upper_dev);
2346 if (err) {
2347 netdev_err(dev, "Failed to link VLAN device\n");
2348 return NOTIFY_BAD;
2349 }
2350 } else {
2351 err = mlxsw_sp_port_vlan_unlink(mlxsw_sp_port,
2352 upper_dev);
2353 if (err) {
2354 netdev_err(dev, "Failed to unlink VLAN device\n");
2355 return NOTIFY_BAD;
2356 }
2357 }
2358 } else if (netif_is_bridge_master(upper_dev)) {
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002359 if (info->linking) {
2360 err = mlxsw_sp_port_bridge_join(mlxsw_sp_port);
2361 if (err)
2362 netdev_err(dev, "Failed to join bridge\n");
2363 mlxsw_sp_master_bridge_inc(mlxsw_sp, upper_dev);
Jiri Pirko0d9b9702015-10-28 10:16:56 +01002364 mlxsw_sp_port->bridged = 1;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002365 } else {
2366 err = mlxsw_sp_port_bridge_leave(mlxsw_sp_port);
2367 if (err)
2368 netdev_err(dev, "Failed to leave bridge\n");
Jiri Pirko0d9b9702015-10-28 10:16:56 +01002369 mlxsw_sp_port->bridged = 0;
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002370 mlxsw_sp_master_bridge_dec(mlxsw_sp, upper_dev);
2371 }
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002372 } else if (netif_is_lag_master(upper_dev)) {
2373 if (info->linking) {
2374 err = mlxsw_sp_port_lag_join(mlxsw_sp_port,
2375 upper_dev);
2376 if (err) {
2377 netdev_err(dev, "Failed to join link aggregation\n");
2378 return NOTIFY_BAD;
2379 }
2380 } else {
2381 err = mlxsw_sp_port_lag_leave(mlxsw_sp_port,
2382 upper_dev);
2383 if (err) {
2384 netdev_err(dev, "Failed to leave link aggregation\n");
2385 return NOTIFY_BAD;
2386 }
2387 }
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002388 }
2389 break;
2390 }
2391
2392 return NOTIFY_DONE;
2393}
2394
Jiri Pirko74581202015-12-03 12:12:30 +01002395static int mlxsw_sp_netdevice_port_lower_event(struct net_device *dev,
2396 unsigned long event, void *ptr)
2397{
2398 struct netdev_notifier_changelowerstate_info *info;
2399 struct mlxsw_sp_port *mlxsw_sp_port;
2400 int err;
2401
2402 mlxsw_sp_port = netdev_priv(dev);
2403 info = ptr;
2404
2405 switch (event) {
2406 case NETDEV_CHANGELOWERSTATE:
2407 if (netif_is_lag_port(dev) && mlxsw_sp_port->lagged) {
2408 err = mlxsw_sp_port_lag_changed(mlxsw_sp_port,
2409 info->lower_state_info);
2410 if (err)
2411 netdev_err(dev, "Failed to reflect link aggregation lower state change\n");
2412 }
2413 break;
2414 }
2415
2416 return NOTIFY_DONE;
2417}
2418
2419static int mlxsw_sp_netdevice_port_event(struct net_device *dev,
2420 unsigned long event, void *ptr)
2421{
2422 switch (event) {
2423 case NETDEV_PRECHANGEUPPER:
2424 case NETDEV_CHANGEUPPER:
2425 return mlxsw_sp_netdevice_port_upper_event(dev, event, ptr);
2426 case NETDEV_CHANGELOWERSTATE:
2427 return mlxsw_sp_netdevice_port_lower_event(dev, event, ptr);
2428 }
2429
2430 return NOTIFY_DONE;
2431}
2432
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002433static int mlxsw_sp_netdevice_lag_event(struct net_device *lag_dev,
2434 unsigned long event, void *ptr)
2435{
2436 struct net_device *dev;
2437 struct list_head *iter;
2438 int ret;
2439
2440 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2441 if (mlxsw_sp_port_dev_check(dev)) {
2442 ret = mlxsw_sp_netdevice_port_event(dev, event, ptr);
2443 if (ret == NOTIFY_BAD)
2444 return ret;
2445 }
2446 }
2447
2448 return NOTIFY_DONE;
2449}
2450
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002451static struct mlxsw_sp_vfid *
2452mlxsw_sp_br_vfid_find(const struct mlxsw_sp *mlxsw_sp,
2453 const struct net_device *br_dev)
2454{
2455 struct mlxsw_sp_vfid *vfid;
2456
2457 list_for_each_entry(vfid, &mlxsw_sp->br_vfids.list, list) {
2458 if (vfid->br_dev == br_dev)
2459 return vfid;
2460 }
2461
2462 return NULL;
2463}
2464
2465static u16 mlxsw_sp_vfid_to_br_vfid(u16 vfid)
2466{
2467 return vfid - MLXSW_SP_VFID_PORT_MAX;
2468}
2469
2470static u16 mlxsw_sp_br_vfid_to_vfid(u16 br_vfid)
2471{
2472 return MLXSW_SP_VFID_PORT_MAX + br_vfid;
2473}
2474
2475static u16 mlxsw_sp_avail_br_vfid_get(const struct mlxsw_sp *mlxsw_sp)
2476{
2477 return find_first_zero_bit(mlxsw_sp->br_vfids.mapped,
2478 MLXSW_SP_VFID_BR_MAX);
2479}
2480
2481static struct mlxsw_sp_vfid *mlxsw_sp_br_vfid_create(struct mlxsw_sp *mlxsw_sp,
2482 struct net_device *br_dev)
2483{
2484 struct device *dev = mlxsw_sp->bus_info->dev;
2485 struct mlxsw_sp_vfid *vfid;
2486 u16 n_vfid;
2487 int err;
2488
2489 n_vfid = mlxsw_sp_br_vfid_to_vfid(mlxsw_sp_avail_br_vfid_get(mlxsw_sp));
2490 if (n_vfid == MLXSW_SP_VFID_MAX) {
2491 dev_err(dev, "No available vFIDs\n");
2492 return ERR_PTR(-ERANGE);
2493 }
2494
2495 err = __mlxsw_sp_vfid_create(mlxsw_sp, n_vfid);
2496 if (err) {
2497 dev_err(dev, "Failed to create vFID=%d\n", n_vfid);
2498 return ERR_PTR(err);
2499 }
2500
2501 vfid = kzalloc(sizeof(*vfid), GFP_KERNEL);
2502 if (!vfid)
2503 goto err_allocate_vfid;
2504
2505 vfid->vfid = n_vfid;
2506 vfid->br_dev = br_dev;
2507
2508 list_add(&vfid->list, &mlxsw_sp->br_vfids.list);
2509 set_bit(mlxsw_sp_vfid_to_br_vfid(n_vfid), mlxsw_sp->br_vfids.mapped);
2510
2511 return vfid;
2512
2513err_allocate_vfid:
2514 __mlxsw_sp_vfid_destroy(mlxsw_sp, n_vfid);
2515 return ERR_PTR(-ENOMEM);
2516}
2517
2518static void mlxsw_sp_br_vfid_destroy(struct mlxsw_sp *mlxsw_sp,
2519 struct mlxsw_sp_vfid *vfid)
2520{
2521 u16 br_vfid = mlxsw_sp_vfid_to_br_vfid(vfid->vfid);
2522
2523 clear_bit(br_vfid, mlxsw_sp->br_vfids.mapped);
2524 list_del(&vfid->list);
2525
2526 __mlxsw_sp_vfid_destroy(mlxsw_sp, vfid->vfid);
2527
2528 kfree(vfid);
2529}
2530
2531static int mlxsw_sp_vport_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_vport,
2532 struct net_device *br_dev)
2533{
2534 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2535 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2536 struct net_device *dev = mlxsw_sp_vport->dev;
2537 struct mlxsw_sp_vfid *vfid, *new_vfid;
2538 int err;
2539
2540 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2541 if (!vfid) {
2542 WARN_ON(!vfid);
2543 return -EINVAL;
2544 }
2545
2546 /* We need a vFID to go back to after leaving the bridge's vFID. */
2547 new_vfid = mlxsw_sp_vfid_find(mlxsw_sp, vid);
2548 if (!new_vfid) {
2549 new_vfid = mlxsw_sp_vfid_create(mlxsw_sp, vid);
2550 if (IS_ERR(new_vfid)) {
2551 netdev_err(dev, "Failed to create vFID for VID=%d\n",
2552 vid);
2553 return PTR_ERR(new_vfid);
2554 }
2555 }
2556
2557 /* Invalidate existing {Port, VID} to vFID mapping and create a new
2558 * one for the new vFID.
2559 */
2560 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2561 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2562 false,
2563 mlxsw_sp_vfid_to_fid(vfid->vfid),
2564 vid);
2565 if (err) {
2566 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2567 vfid->vfid);
2568 goto err_port_vid_to_fid_invalidate;
2569 }
2570
2571 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2572 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2573 true,
2574 mlxsw_sp_vfid_to_fid(new_vfid->vfid),
2575 vid);
2576 if (err) {
2577 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2578 new_vfid->vfid);
2579 goto err_port_vid_to_fid_validate;
2580 }
2581
2582 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2583 if (err) {
2584 netdev_err(dev, "Failed to disable learning\n");
2585 goto err_port_vid_learning_set;
2586 }
2587
2588 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false,
2589 false);
2590 if (err) {
2591 netdev_err(dev, "Failed clear to clear flooding\n");
2592 goto err_vport_flood_set;
2593 }
2594
2595 /* Switch between the vFIDs and destroy the old one if needed. */
2596 new_vfid->nr_vports++;
2597 mlxsw_sp_vport->vport.vfid = new_vfid;
2598 vfid->nr_vports--;
2599 if (!vfid->nr_vports)
2600 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2601
2602 mlxsw_sp_vport->learning = 0;
2603 mlxsw_sp_vport->learning_sync = 0;
2604 mlxsw_sp_vport->uc_flood = 0;
2605 mlxsw_sp_vport->bridged = 0;
2606
2607 return 0;
2608
2609err_vport_flood_set:
2610err_port_vid_learning_set:
2611err_port_vid_to_fid_validate:
2612err_port_vid_to_fid_invalidate:
2613 /* Rollback vFID only if new. */
2614 if (!new_vfid->nr_vports)
2615 mlxsw_sp_vfid_destroy(mlxsw_sp, new_vfid);
2616 return err;
2617}
2618
2619static int mlxsw_sp_vport_bridge_join(struct mlxsw_sp_port *mlxsw_sp_vport,
2620 struct net_device *br_dev)
2621{
2622 struct mlxsw_sp_vfid *old_vfid = mlxsw_sp_vport->vport.vfid;
2623 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp;
2624 u16 vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
2625 struct net_device *dev = mlxsw_sp_vport->dev;
2626 struct mlxsw_sp_vfid *vfid;
2627 int err;
2628
2629 vfid = mlxsw_sp_br_vfid_find(mlxsw_sp, br_dev);
2630 if (!vfid) {
2631 vfid = mlxsw_sp_br_vfid_create(mlxsw_sp, br_dev);
2632 if (IS_ERR(vfid)) {
2633 netdev_err(dev, "Failed to create bridge vFID\n");
2634 return PTR_ERR(vfid);
2635 }
2636 }
2637
2638 err = mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, true, false);
2639 if (err) {
2640 netdev_err(dev, "Failed to setup flooding for vFID=%d\n",
2641 vfid->vfid);
2642 goto err_port_flood_set;
2643 }
2644
2645 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, true);
2646 if (err) {
2647 netdev_err(dev, "Failed to enable learning\n");
2648 goto err_port_vid_learning_set;
2649 }
2650
2651 /* We need to invalidate existing {Port, VID} to vFID mapping and
2652 * create a new one for the bridge's vFID.
2653 */
2654 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2655 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2656 false,
2657 mlxsw_sp_vfid_to_fid(old_vfid->vfid),
2658 vid);
2659 if (err) {
2660 netdev_err(dev, "Failed to invalidate {Port, VID} to vFID=%d mapping\n",
2661 old_vfid->vfid);
2662 goto err_port_vid_to_fid_invalidate;
2663 }
2664
2665 err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2666 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID,
2667 true,
2668 mlxsw_sp_vfid_to_fid(vfid->vfid),
2669 vid);
2670 if (err) {
2671 netdev_err(dev, "Failed to map {Port, VID} to vFID=%d\n",
2672 vfid->vfid);
2673 goto err_port_vid_to_fid_validate;
2674 }
2675
2676 /* Switch between the vFIDs and destroy the old one if needed. */
2677 vfid->nr_vports++;
2678 mlxsw_sp_vport->vport.vfid = vfid;
2679 old_vfid->nr_vports--;
2680 if (!old_vfid->nr_vports)
2681 mlxsw_sp_vfid_destroy(mlxsw_sp, old_vfid);
2682
2683 mlxsw_sp_vport->learning = 1;
2684 mlxsw_sp_vport->learning_sync = 1;
2685 mlxsw_sp_vport->uc_flood = 1;
2686 mlxsw_sp_vport->bridged = 1;
2687
2688 return 0;
2689
2690err_port_vid_to_fid_validate:
2691 mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_vport,
2692 MLXSW_REG_SVFA_MT_PORT_VID_TO_FID, false,
2693 mlxsw_sp_vfid_to_fid(old_vfid->vfid), vid);
2694err_port_vid_to_fid_invalidate:
2695 mlxsw_sp_port_vid_learning_set(mlxsw_sp_vport, vid, false);
2696err_port_vid_learning_set:
2697 mlxsw_sp_vport_flood_set(mlxsw_sp_vport, vfid->vfid, false, false);
2698err_port_flood_set:
2699 if (!vfid->nr_vports)
2700 mlxsw_sp_br_vfid_destroy(mlxsw_sp, vfid);
2701 return err;
2702}
2703
2704static bool
2705mlxsw_sp_port_master_bridge_check(const struct mlxsw_sp_port *mlxsw_sp_port,
2706 const struct net_device *br_dev)
2707{
2708 struct mlxsw_sp_port *mlxsw_sp_vport;
2709
2710 list_for_each_entry(mlxsw_sp_vport, &mlxsw_sp_port->vports_list,
2711 vport.list) {
2712 if (mlxsw_sp_vport_br_get(mlxsw_sp_vport) == br_dev)
2713 return false;
2714 }
2715
2716 return true;
2717}
2718
2719static int mlxsw_sp_netdevice_vport_event(struct net_device *dev,
2720 unsigned long event, void *ptr,
2721 u16 vid)
2722{
2723 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
2724 struct netdev_notifier_changeupper_info *info = ptr;
2725 struct mlxsw_sp_port *mlxsw_sp_vport;
2726 struct net_device *upper_dev;
2727 int err;
2728
2729 mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
2730
2731 switch (event) {
2732 case NETDEV_PRECHANGEUPPER:
2733 upper_dev = info->upper_dev;
2734 if (!info->master || !info->linking)
2735 break;
2736 if (!netif_is_bridge_master(upper_dev))
2737 return NOTIFY_BAD;
2738 /* We can't have multiple VLAN interfaces configured on
2739 * the same port and being members in the same bridge.
2740 */
2741 if (!mlxsw_sp_port_master_bridge_check(mlxsw_sp_port,
2742 upper_dev))
2743 return NOTIFY_BAD;
2744 break;
2745 case NETDEV_CHANGEUPPER:
2746 upper_dev = info->upper_dev;
2747 if (!info->master)
2748 break;
2749 if (info->linking) {
2750 if (!mlxsw_sp_vport) {
2751 WARN_ON(!mlxsw_sp_vport);
2752 return NOTIFY_BAD;
2753 }
2754 err = mlxsw_sp_vport_bridge_join(mlxsw_sp_vport,
2755 upper_dev);
2756 if (err) {
2757 netdev_err(dev, "Failed to join bridge\n");
2758 return NOTIFY_BAD;
2759 }
2760 } else {
2761 /* We ignore bridge's unlinking notifications if vPort
2762 * is gone, since we already left the bridge when the
2763 * VLAN device was unlinked from the real device.
2764 */
2765 if (!mlxsw_sp_vport)
2766 return NOTIFY_DONE;
2767 err = mlxsw_sp_vport_bridge_leave(mlxsw_sp_vport,
2768 upper_dev);
2769 if (err) {
2770 netdev_err(dev, "Failed to leave bridge\n");
2771 return NOTIFY_BAD;
2772 }
2773 }
2774 }
2775
2776 return NOTIFY_DONE;
2777}
2778
Ido Schimmel272c4472015-12-15 16:03:47 +01002779static int mlxsw_sp_netdevice_lag_vport_event(struct net_device *lag_dev,
2780 unsigned long event, void *ptr,
2781 u16 vid)
2782{
2783 struct net_device *dev;
2784 struct list_head *iter;
2785 int ret;
2786
2787 netdev_for_each_lower_dev(lag_dev, dev, iter) {
2788 if (mlxsw_sp_port_dev_check(dev)) {
2789 ret = mlxsw_sp_netdevice_vport_event(dev, event, ptr,
2790 vid);
2791 if (ret == NOTIFY_BAD)
2792 return ret;
2793 }
2794 }
2795
2796 return NOTIFY_DONE;
2797}
2798
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002799static int mlxsw_sp_netdevice_vlan_event(struct net_device *vlan_dev,
2800 unsigned long event, void *ptr)
2801{
2802 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
2803 u16 vid = vlan_dev_vlan_id(vlan_dev);
2804
Ido Schimmel272c4472015-12-15 16:03:47 +01002805 if (mlxsw_sp_port_dev_check(real_dev))
2806 return mlxsw_sp_netdevice_vport_event(real_dev, event, ptr,
2807 vid);
2808 else if (netif_is_lag_master(real_dev))
2809 return mlxsw_sp_netdevice_lag_vport_event(real_dev, event, ptr,
2810 vid);
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002811
Ido Schimmel272c4472015-12-15 16:03:47 +01002812 return NOTIFY_DONE;
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002813}
2814
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002815static int mlxsw_sp_netdevice_event(struct notifier_block *unused,
2816 unsigned long event, void *ptr)
2817{
2818 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2819
2820 if (mlxsw_sp_port_dev_check(dev))
2821 return mlxsw_sp_netdevice_port_event(dev, event, ptr);
2822
2823 if (netif_is_lag_master(dev))
2824 return mlxsw_sp_netdevice_lag_event(dev, event, ptr);
2825
Ido Schimmel26f0e7f2015-12-15 16:03:44 +01002826 if (is_vlan_dev(dev))
2827 return mlxsw_sp_netdevice_vlan_event(dev, event, ptr);
2828
Jiri Pirko0d65fc12015-12-03 12:12:28 +01002829 return NOTIFY_DONE;
2830}
2831
Jiri Pirko56ade8f2015-10-16 14:01:37 +02002832static struct notifier_block mlxsw_sp_netdevice_nb __read_mostly = {
2833 .notifier_call = mlxsw_sp_netdevice_event,
2834};
2835
2836static int __init mlxsw_sp_module_init(void)
2837{
2838 int err;
2839
2840 register_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2841 err = mlxsw_core_driver_register(&mlxsw_sp_driver);
2842 if (err)
2843 goto err_core_driver_register;
2844 return 0;
2845
2846err_core_driver_register:
2847 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2848 return err;
2849}
2850
2851static void __exit mlxsw_sp_module_exit(void)
2852{
2853 mlxsw_core_driver_unregister(&mlxsw_sp_driver);
2854 unregister_netdevice_notifier(&mlxsw_sp_netdevice_nb);
2855}
2856
2857module_init(mlxsw_sp_module_init);
2858module_exit(mlxsw_sp_module_exit);
2859
2860MODULE_LICENSE("Dual BSD/GPL");
2861MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
2862MODULE_DESCRIPTION("Mellanox Spectrum driver");
2863MODULE_MLXSW_DRIVER_ALIAS(MLXSW_DEVICE_KIND_SPECTRUM);