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Commit | Line | Data |
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91da11f8 LB |
1 | /* |
2 | * net/dsa/slave.c - Slave device handling | |
e84665c9 | 3 | * Copyright (c) 2008-2009 Marvell Semiconductor |
91da11f8 LB |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #include <linux/list.h> | |
df02c6ff | 12 | #include <linux/etherdevice.h> |
b73adef6 | 13 | #include <linux/netdevice.h> |
91da11f8 | 14 | #include <linux/phy.h> |
a2820543 | 15 | #include <linux/phy_fixed.h> |
0d8bcdd3 FF |
16 | #include <linux/of_net.h> |
17 | #include <linux/of_mdio.h> | |
b73adef6 | 18 | #include <net/rtnetlink.h> |
98237d43 | 19 | #include <net/switchdev.h> |
b73adef6 | 20 | #include <linux/if_bridge.h> |
04ff53f9 | 21 | #include <linux/netpoll.h> |
91da11f8 LB |
22 | #include "dsa_priv.h" |
23 | ||
24 | /* slave mii_bus handling ***************************************************/ | |
25 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
26 | { | |
27 | struct dsa_switch *ds = bus->priv; | |
28 | ||
0d8bcdd3 | 29 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
30 | return ds->drv->phy_read(ds, addr, reg); |
31 | ||
32 | return 0xffff; | |
33 | } | |
34 | ||
35 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
36 | { | |
37 | struct dsa_switch *ds = bus->priv; | |
38 | ||
0d8bcdd3 | 39 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
40 | return ds->drv->phy_write(ds, addr, reg, val); |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
46 | { | |
47 | ds->slave_mii_bus->priv = (void *)ds; | |
48 | ds->slave_mii_bus->name = "dsa slave smi"; | |
49 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
50 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
f490be04 FF |
51 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x", |
52 | ds->index, ds->pd->sw_addr); | |
b4d2394d | 53 | ds->slave_mii_bus->parent = ds->master_dev; |
24df8986 | 54 | ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
91da11f8 LB |
55 | } |
56 | ||
57 | ||
58 | /* slave device handling ****************************************************/ | |
abd2be00 | 59 | static int dsa_slave_get_iflink(const struct net_device *dev) |
c0840801 LB |
60 | { |
61 | struct dsa_slave_priv *p = netdev_priv(dev); | |
c0840801 | 62 | |
abd2be00 | 63 | return p->parent->dst->master_netdev->ifindex; |
c0840801 LB |
64 | } |
65 | ||
b73adef6 FF |
66 | static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p) |
67 | { | |
68 | return !!p->bridge_dev; | |
69 | } | |
70 | ||
91da11f8 LB |
71 | static int dsa_slave_open(struct net_device *dev) |
72 | { | |
df02c6ff | 73 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 74 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 75 | struct dsa_switch *ds = p->parent; |
b73adef6 FF |
76 | u8 stp_state = dsa_port_is_bridged(p) ? |
77 | BR_STATE_BLOCKING : BR_STATE_FORWARDING; | |
df02c6ff LB |
78 | int err; |
79 | ||
80 | if (!(master->flags & IFF_UP)) | |
81 | return -ENETDOWN; | |
82 | ||
8feedbb4 | 83 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 84 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
85 | if (err < 0) |
86 | goto out; | |
87 | } | |
88 | ||
89 | if (dev->flags & IFF_ALLMULTI) { | |
90 | err = dev_set_allmulti(master, 1); | |
91 | if (err < 0) | |
92 | goto del_unicast; | |
93 | } | |
94 | if (dev->flags & IFF_PROMISC) { | |
95 | err = dev_set_promiscuity(master, 1); | |
96 | if (err < 0) | |
97 | goto clear_allmulti; | |
98 | } | |
99 | ||
b2f2af21 FF |
100 | if (ds->drv->port_enable) { |
101 | err = ds->drv->port_enable(ds, p->port, p->phy); | |
102 | if (err) | |
103 | goto clear_promisc; | |
104 | } | |
105 | ||
b73adef6 FF |
106 | if (ds->drv->port_stp_update) |
107 | ds->drv->port_stp_update(ds, p->port, stp_state); | |
108 | ||
f7f1de51 FF |
109 | if (p->phy) |
110 | phy_start(p->phy); | |
111 | ||
91da11f8 | 112 | return 0; |
df02c6ff | 113 | |
b2f2af21 FF |
114 | clear_promisc: |
115 | if (dev->flags & IFF_PROMISC) | |
4fdeddfe | 116 | dev_set_promiscuity(master, -1); |
df02c6ff LB |
117 | clear_allmulti: |
118 | if (dev->flags & IFF_ALLMULTI) | |
119 | dev_set_allmulti(master, -1); | |
120 | del_unicast: | |
8feedbb4 | 121 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 122 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
123 | out: |
124 | return err; | |
91da11f8 LB |
125 | } |
126 | ||
127 | static int dsa_slave_close(struct net_device *dev) | |
128 | { | |
df02c6ff | 129 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 130 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 131 | struct dsa_switch *ds = p->parent; |
df02c6ff | 132 | |
f7f1de51 FF |
133 | if (p->phy) |
134 | phy_stop(p->phy); | |
135 | ||
df02c6ff | 136 | dev_mc_unsync(master, dev); |
a748ee24 | 137 | dev_uc_unsync(master, dev); |
df02c6ff LB |
138 | if (dev->flags & IFF_ALLMULTI) |
139 | dev_set_allmulti(master, -1); | |
140 | if (dev->flags & IFF_PROMISC) | |
141 | dev_set_promiscuity(master, -1); | |
142 | ||
8feedbb4 | 143 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 144 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 145 | |
b2f2af21 FF |
146 | if (ds->drv->port_disable) |
147 | ds->drv->port_disable(ds, p->port, p->phy); | |
148 | ||
b73adef6 FF |
149 | if (ds->drv->port_stp_update) |
150 | ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED); | |
151 | ||
91da11f8 LB |
152 | return 0; |
153 | } | |
154 | ||
155 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
156 | { | |
157 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 158 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
159 | |
160 | if (change & IFF_ALLMULTI) | |
161 | dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
162 | if (change & IFF_PROMISC) | |
163 | dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); | |
164 | } | |
165 | ||
166 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
167 | { | |
168 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 169 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
170 | |
171 | dev_mc_sync(master, dev); | |
a748ee24 | 172 | dev_uc_sync(master, dev); |
91da11f8 LB |
173 | } |
174 | ||
df02c6ff | 175 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 176 | { |
df02c6ff | 177 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 178 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
179 | struct sockaddr *addr = a; |
180 | int err; | |
181 | ||
182 | if (!is_valid_ether_addr(addr->sa_data)) | |
183 | return -EADDRNOTAVAIL; | |
184 | ||
185 | if (!(dev->flags & IFF_UP)) | |
186 | goto out; | |
187 | ||
8feedbb4 | 188 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 189 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
190 | if (err < 0) |
191 | return err; | |
192 | } | |
193 | ||
8feedbb4 | 194 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 195 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
196 | |
197 | out: | |
d08f161a | 198 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
91da11f8 LB |
199 | |
200 | return 0; | |
201 | } | |
202 | ||
ba14d9eb VD |
203 | static int dsa_slave_port_fdb_add(struct net_device *dev, |
204 | struct switchdev_obj *obj) | |
cdf09697 | 205 | { |
ba14d9eb | 206 | struct switchdev_obj_fdb *fdb = &obj->u.fdb; |
cdf09697 DM |
207 | struct dsa_slave_priv *p = netdev_priv(dev); |
208 | struct dsa_switch *ds = p->parent; | |
209 | int ret = -EOPNOTSUPP; | |
210 | ||
ba14d9eb VD |
211 | if (obj->trans == SWITCHDEV_TRANS_PREPARE) |
212 | ret = ds->drv->port_fdb_add ? 0 : -EOPNOTSUPP; | |
213 | else if (obj->trans == SWITCHDEV_TRANS_COMMIT) | |
214 | ret = ds->drv->port_fdb_add(ds, p->port, fdb->addr, fdb->vid); | |
cdf09697 DM |
215 | |
216 | return ret; | |
217 | } | |
218 | ||
ba14d9eb VD |
219 | static int dsa_slave_port_fdb_del(struct net_device *dev, |
220 | struct switchdev_obj *obj) | |
cdf09697 | 221 | { |
ba14d9eb | 222 | struct switchdev_obj_fdb *fdb = &obj->u.fdb; |
cdf09697 DM |
223 | struct dsa_slave_priv *p = netdev_priv(dev); |
224 | struct dsa_switch *ds = p->parent; | |
225 | int ret = -EOPNOTSUPP; | |
226 | ||
2a778e1b | 227 | if (ds->drv->port_fdb_del) |
ba14d9eb | 228 | ret = ds->drv->port_fdb_del(ds, p->port, fdb->addr, fdb->vid); |
cdf09697 DM |
229 | |
230 | return ret; | |
231 | } | |
232 | ||
ba14d9eb VD |
233 | static int dsa_slave_port_fdb_dump(struct net_device *dev, |
234 | struct switchdev_obj *obj) | |
cdf09697 DM |
235 | { |
236 | struct dsa_slave_priv *p = netdev_priv(dev); | |
237 | struct dsa_switch *ds = p->parent; | |
238 | unsigned char addr[ETH_ALEN] = { 0 }; | |
2a778e1b | 239 | u16 vid = 0; |
cdf09697 DM |
240 | int ret; |
241 | ||
2a778e1b | 242 | if (!ds->drv->port_fdb_getnext) |
cdf09697 DM |
243 | return -EOPNOTSUPP; |
244 | ||
ba14d9eb | 245 | for (;;) { |
cdf09697 DM |
246 | bool is_static; |
247 | ||
2a778e1b VD |
248 | ret = ds->drv->port_fdb_getnext(ds, p->port, addr, &vid, |
249 | &is_static); | |
cdf09697 DM |
250 | if (ret < 0) |
251 | break; | |
252 | ||
ba14d9eb VD |
253 | obj->u.fdb.addr = addr; |
254 | obj->u.fdb.vid = vid; | |
255 | obj->u.fdb.ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; | |
cdf09697 | 256 | |
ba14d9eb | 257 | ret = obj->cb(dev, obj); |
cdf09697 DM |
258 | if (ret < 0) |
259 | break; | |
260 | } | |
261 | ||
ba14d9eb | 262 | return ret == -ENOENT ? 0 : ret; |
cdf09697 DM |
263 | } |
264 | ||
91da11f8 LB |
265 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
266 | { | |
267 | struct dsa_slave_priv *p = netdev_priv(dev); | |
91da11f8 LB |
268 | |
269 | if (p->phy != NULL) | |
28b04113 | 270 | return phy_mii_ioctl(p->phy, ifr, cmd); |
91da11f8 LB |
271 | |
272 | return -EOPNOTSUPP; | |
273 | } | |
274 | ||
b73adef6 FF |
275 | /* Return a bitmask of all ports being currently bridged within a given bridge |
276 | * device. Note that on leave, the mask will still return the bitmask of ports | |
277 | * currently bridged, prior to port removal, and this is exactly what we want. | |
278 | */ | |
279 | static u32 dsa_slave_br_port_mask(struct dsa_switch *ds, | |
280 | struct net_device *bridge) | |
281 | { | |
282 | struct dsa_slave_priv *p; | |
283 | unsigned int port; | |
284 | u32 mask = 0; | |
285 | ||
286 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
d79d2107 | 287 | if (!dsa_is_port_initialized(ds, port)) |
b73adef6 FF |
288 | continue; |
289 | ||
290 | p = netdev_priv(ds->ports[port]); | |
291 | ||
292 | if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT && | |
293 | p->bridge_dev == bridge) | |
294 | mask |= 1 << port; | |
295 | } | |
296 | ||
297 | return mask; | |
298 | } | |
299 | ||
300 | static int dsa_slave_stp_update(struct net_device *dev, u8 state) | |
301 | { | |
302 | struct dsa_slave_priv *p = netdev_priv(dev); | |
303 | struct dsa_switch *ds = p->parent; | |
304 | int ret = -EOPNOTSUPP; | |
305 | ||
306 | if (ds->drv->port_stp_update) | |
307 | ret = ds->drv->port_stp_update(ds, p->port, state); | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
35636062 SF |
312 | static int dsa_slave_port_attr_set(struct net_device *dev, |
313 | struct switchdev_attr *attr) | |
314 | { | |
315 | int ret = 0; | |
316 | ||
317 | switch (attr->id) { | |
318 | case SWITCHDEV_ATTR_PORT_STP_STATE: | |
319 | if (attr->trans == SWITCHDEV_TRANS_COMMIT) | |
42275bd8 | 320 | ret = dsa_slave_stp_update(dev, attr->u.stp_state); |
35636062 SF |
321 | break; |
322 | default: | |
323 | ret = -EOPNOTSUPP; | |
324 | break; | |
325 | } | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
ba14d9eb VD |
330 | static int dsa_slave_port_obj_add(struct net_device *dev, |
331 | struct switchdev_obj *obj) | |
332 | { | |
333 | int err; | |
334 | ||
335 | /* For the prepare phase, ensure the full set of changes is feasable in | |
336 | * one go in order to signal a failure properly. If an operation is not | |
337 | * supported, return -EOPNOTSUPP. | |
338 | */ | |
339 | ||
340 | switch (obj->id) { | |
341 | case SWITCHDEV_OBJ_PORT_FDB: | |
342 | err = dsa_slave_port_fdb_add(dev, obj); | |
343 | break; | |
344 | default: | |
345 | err = -EOPNOTSUPP; | |
346 | break; | |
347 | } | |
348 | ||
349 | return err; | |
350 | } | |
351 | ||
352 | static int dsa_slave_port_obj_del(struct net_device *dev, | |
353 | struct switchdev_obj *obj) | |
354 | { | |
355 | int err; | |
356 | ||
357 | switch (obj->id) { | |
358 | case SWITCHDEV_OBJ_PORT_FDB: | |
359 | err = dsa_slave_port_fdb_del(dev, obj); | |
360 | break; | |
361 | default: | |
362 | err = -EOPNOTSUPP; | |
363 | break; | |
364 | } | |
365 | ||
366 | return err; | |
367 | } | |
368 | ||
369 | static int dsa_slave_port_obj_dump(struct net_device *dev, | |
370 | struct switchdev_obj *obj) | |
371 | { | |
372 | int err; | |
373 | ||
374 | switch (obj->id) { | |
375 | case SWITCHDEV_OBJ_PORT_FDB: | |
376 | err = dsa_slave_port_fdb_dump(dev, obj); | |
377 | break; | |
378 | default: | |
379 | err = -EOPNOTSUPP; | |
380 | break; | |
381 | } | |
382 | ||
383 | return err; | |
384 | } | |
385 | ||
b73adef6 FF |
386 | static int dsa_slave_bridge_port_join(struct net_device *dev, |
387 | struct net_device *br) | |
388 | { | |
389 | struct dsa_slave_priv *p = netdev_priv(dev); | |
390 | struct dsa_switch *ds = p->parent; | |
391 | int ret = -EOPNOTSUPP; | |
392 | ||
393 | p->bridge_dev = br; | |
394 | ||
395 | if (ds->drv->port_join_bridge) | |
396 | ret = ds->drv->port_join_bridge(ds, p->port, | |
397 | dsa_slave_br_port_mask(ds, br)); | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | static int dsa_slave_bridge_port_leave(struct net_device *dev) | |
403 | { | |
404 | struct dsa_slave_priv *p = netdev_priv(dev); | |
405 | struct dsa_switch *ds = p->parent; | |
406 | int ret = -EOPNOTSUPP; | |
407 | ||
408 | ||
409 | if (ds->drv->port_leave_bridge) | |
410 | ret = ds->drv->port_leave_bridge(ds, p->port, | |
411 | dsa_slave_br_port_mask(ds, p->bridge_dev)); | |
412 | ||
413 | p->bridge_dev = NULL; | |
414 | ||
415 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
416 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
417 | */ | |
418 | dsa_slave_stp_update(dev, BR_STATE_FORWARDING); | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
f8e20a9f SF |
423 | static int dsa_slave_port_attr_get(struct net_device *dev, |
424 | struct switchdev_attr *attr) | |
b73adef6 FF |
425 | { |
426 | struct dsa_slave_priv *p = netdev_priv(dev); | |
427 | struct dsa_switch *ds = p->parent; | |
428 | ||
f8e20a9f SF |
429 | switch (attr->id) { |
430 | case SWITCHDEV_ATTR_PORT_PARENT_ID: | |
42275bd8 SF |
431 | attr->u.ppid.id_len = sizeof(ds->index); |
432 | memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len); | |
f8e20a9f SF |
433 | break; |
434 | default: | |
435 | return -EOPNOTSUPP; | |
436 | } | |
b73adef6 FF |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
04ff53f9 FF |
441 | static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p, |
442 | struct sk_buff *skb) | |
443 | { | |
444 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
445 | if (p->netpoll) | |
446 | netpoll_send_skb(p->netpoll, skb); | |
447 | #else | |
448 | BUG(); | |
449 | #endif | |
450 | return NETDEV_TX_OK; | |
451 | } | |
452 | ||
3e8a72d1 FF |
453 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
454 | { | |
455 | struct dsa_slave_priv *p = netdev_priv(dev); | |
4ed70ce9 | 456 | struct sk_buff *nskb; |
3e8a72d1 | 457 | |
4ed70ce9 FF |
458 | dev->stats.tx_packets++; |
459 | dev->stats.tx_bytes += skb->len; | |
3e8a72d1 | 460 | |
4ed70ce9 FF |
461 | /* Transmit function may have to reallocate the original SKB */ |
462 | nskb = p->xmit(skb, dev); | |
463 | if (!nskb) | |
464 | return NETDEV_TX_OK; | |
5aed85ce | 465 | |
04ff53f9 FF |
466 | /* SKB for netpoll still need to be mangled with the protocol-specific |
467 | * tag to be successfully transmitted | |
468 | */ | |
469 | if (unlikely(netpoll_tx_running(dev))) | |
470 | return dsa_netpoll_send_skb(p, nskb); | |
471 | ||
4ed70ce9 FF |
472 | /* Queue the SKB for transmission on the parent interface, but |
473 | * do not modify its EtherType | |
474 | */ | |
475 | nskb->dev = p->parent->dst->master_netdev; | |
476 | dev_queue_xmit(nskb); | |
5aed85ce FF |
477 | |
478 | return NETDEV_TX_OK; | |
479 | } | |
480 | ||
4ed70ce9 FF |
481 | static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, |
482 | struct net_device *dev) | |
483 | { | |
484 | /* Just return the original SKB */ | |
485 | return skb; | |
486 | } | |
487 | ||
91da11f8 LB |
488 | |
489 | /* ethtool operations *******************************************************/ | |
490 | static int | |
491 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
492 | { | |
493 | struct dsa_slave_priv *p = netdev_priv(dev); | |
494 | int err; | |
495 | ||
496 | err = -EOPNOTSUPP; | |
497 | if (p->phy != NULL) { | |
498 | err = phy_read_status(p->phy); | |
499 | if (err == 0) | |
500 | err = phy_ethtool_gset(p->phy, cmd); | |
501 | } | |
502 | ||
503 | return err; | |
504 | } | |
505 | ||
506 | static int | |
507 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
508 | { | |
509 | struct dsa_slave_priv *p = netdev_priv(dev); | |
510 | ||
511 | if (p->phy != NULL) | |
512 | return phy_ethtool_sset(p->phy, cmd); | |
513 | ||
514 | return -EOPNOTSUPP; | |
515 | } | |
516 | ||
517 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
518 | struct ethtool_drvinfo *drvinfo) | |
519 | { | |
7826d43f JP |
520 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
521 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
522 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
523 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
524 | } |
525 | ||
3d762a0f GR |
526 | static int dsa_slave_get_regs_len(struct net_device *dev) |
527 | { | |
528 | struct dsa_slave_priv *p = netdev_priv(dev); | |
529 | struct dsa_switch *ds = p->parent; | |
530 | ||
531 | if (ds->drv->get_regs_len) | |
532 | return ds->drv->get_regs_len(ds, p->port); | |
533 | ||
534 | return -EOPNOTSUPP; | |
535 | } | |
536 | ||
537 | static void | |
538 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
539 | { | |
540 | struct dsa_slave_priv *p = netdev_priv(dev); | |
541 | struct dsa_switch *ds = p->parent; | |
542 | ||
543 | if (ds->drv->get_regs) | |
544 | ds->drv->get_regs(ds, p->port, regs, _p); | |
545 | } | |
546 | ||
91da11f8 LB |
547 | static int dsa_slave_nway_reset(struct net_device *dev) |
548 | { | |
549 | struct dsa_slave_priv *p = netdev_priv(dev); | |
550 | ||
551 | if (p->phy != NULL) | |
552 | return genphy_restart_aneg(p->phy); | |
553 | ||
554 | return -EOPNOTSUPP; | |
555 | } | |
556 | ||
557 | static u32 dsa_slave_get_link(struct net_device *dev) | |
558 | { | |
559 | struct dsa_slave_priv *p = netdev_priv(dev); | |
560 | ||
561 | if (p->phy != NULL) { | |
562 | genphy_update_link(p->phy); | |
563 | return p->phy->link; | |
564 | } | |
565 | ||
566 | return -EOPNOTSUPP; | |
567 | } | |
568 | ||
6793abb4 GR |
569 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
570 | { | |
571 | struct dsa_slave_priv *p = netdev_priv(dev); | |
572 | struct dsa_switch *ds = p->parent; | |
573 | ||
574 | if (ds->pd->eeprom_len) | |
575 | return ds->pd->eeprom_len; | |
576 | ||
577 | if (ds->drv->get_eeprom_len) | |
578 | return ds->drv->get_eeprom_len(ds); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
584 | struct ethtool_eeprom *eeprom, u8 *data) | |
585 | { | |
586 | struct dsa_slave_priv *p = netdev_priv(dev); | |
587 | struct dsa_switch *ds = p->parent; | |
588 | ||
589 | if (ds->drv->get_eeprom) | |
590 | return ds->drv->get_eeprom(ds, eeprom, data); | |
591 | ||
592 | return -EOPNOTSUPP; | |
593 | } | |
594 | ||
595 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
596 | struct ethtool_eeprom *eeprom, u8 *data) | |
597 | { | |
598 | struct dsa_slave_priv *p = netdev_priv(dev); | |
599 | struct dsa_switch *ds = p->parent; | |
600 | ||
601 | if (ds->drv->set_eeprom) | |
602 | return ds->drv->set_eeprom(ds, eeprom, data); | |
603 | ||
604 | return -EOPNOTSUPP; | |
605 | } | |
606 | ||
91da11f8 LB |
607 | static void dsa_slave_get_strings(struct net_device *dev, |
608 | uint32_t stringset, uint8_t *data) | |
609 | { | |
610 | struct dsa_slave_priv *p = netdev_priv(dev); | |
611 | struct dsa_switch *ds = p->parent; | |
612 | ||
613 | if (stringset == ETH_SS_STATS) { | |
614 | int len = ETH_GSTRING_LEN; | |
615 | ||
616 | strncpy(data, "tx_packets", len); | |
617 | strncpy(data + len, "tx_bytes", len); | |
618 | strncpy(data + 2 * len, "rx_packets", len); | |
619 | strncpy(data + 3 * len, "rx_bytes", len); | |
620 | if (ds->drv->get_strings != NULL) | |
621 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
622 | } | |
623 | } | |
624 | ||
625 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
626 | struct ethtool_stats *stats, | |
627 | uint64_t *data) | |
628 | { | |
629 | struct dsa_slave_priv *p = netdev_priv(dev); | |
630 | struct dsa_switch *ds = p->parent; | |
631 | ||
632 | data[0] = p->dev->stats.tx_packets; | |
633 | data[1] = p->dev->stats.tx_bytes; | |
634 | data[2] = p->dev->stats.rx_packets; | |
635 | data[3] = p->dev->stats.rx_bytes; | |
636 | if (ds->drv->get_ethtool_stats != NULL) | |
637 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
638 | } | |
639 | ||
640 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
641 | { | |
642 | struct dsa_slave_priv *p = netdev_priv(dev); | |
643 | struct dsa_switch *ds = p->parent; | |
644 | ||
645 | if (sset == ETH_SS_STATS) { | |
646 | int count; | |
647 | ||
648 | count = 4; | |
649 | if (ds->drv->get_sset_count != NULL) | |
650 | count += ds->drv->get_sset_count(ds); | |
651 | ||
652 | return count; | |
653 | } | |
654 | ||
655 | return -EOPNOTSUPP; | |
656 | } | |
657 | ||
19e57c4e FF |
658 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
659 | { | |
660 | struct dsa_slave_priv *p = netdev_priv(dev); | |
661 | struct dsa_switch *ds = p->parent; | |
662 | ||
663 | if (ds->drv->get_wol) | |
664 | ds->drv->get_wol(ds, p->port, w); | |
665 | } | |
666 | ||
667 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
668 | { | |
669 | struct dsa_slave_priv *p = netdev_priv(dev); | |
670 | struct dsa_switch *ds = p->parent; | |
671 | int ret = -EOPNOTSUPP; | |
672 | ||
673 | if (ds->drv->set_wol) | |
674 | ret = ds->drv->set_wol(ds, p->port, w); | |
675 | ||
676 | return ret; | |
677 | } | |
678 | ||
7905288f FF |
679 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
680 | { | |
681 | struct dsa_slave_priv *p = netdev_priv(dev); | |
682 | struct dsa_switch *ds = p->parent; | |
683 | int ret; | |
684 | ||
685 | if (!ds->drv->set_eee) | |
686 | return -EOPNOTSUPP; | |
687 | ||
688 | ret = ds->drv->set_eee(ds, p->port, p->phy, e); | |
689 | if (ret) | |
690 | return ret; | |
691 | ||
692 | if (p->phy) | |
693 | ret = phy_ethtool_set_eee(p->phy, e); | |
694 | ||
695 | return ret; | |
696 | } | |
697 | ||
698 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
699 | { | |
700 | struct dsa_slave_priv *p = netdev_priv(dev); | |
701 | struct dsa_switch *ds = p->parent; | |
702 | int ret; | |
703 | ||
704 | if (!ds->drv->get_eee) | |
705 | return -EOPNOTSUPP; | |
706 | ||
707 | ret = ds->drv->get_eee(ds, p->port, e); | |
708 | if (ret) | |
709 | return ret; | |
710 | ||
711 | if (p->phy) | |
712 | ret = phy_ethtool_get_eee(p->phy, e); | |
713 | ||
714 | return ret; | |
715 | } | |
716 | ||
04ff53f9 FF |
717 | #ifdef CONFIG_NET_POLL_CONTROLLER |
718 | static int dsa_slave_netpoll_setup(struct net_device *dev, | |
719 | struct netpoll_info *ni) | |
720 | { | |
721 | struct dsa_slave_priv *p = netdev_priv(dev); | |
722 | struct dsa_switch *ds = p->parent; | |
723 | struct net_device *master = ds->dst->master_netdev; | |
724 | struct netpoll *netpoll; | |
725 | int err = 0; | |
726 | ||
727 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
728 | if (!netpoll) | |
729 | return -ENOMEM; | |
730 | ||
731 | err = __netpoll_setup(netpoll, master); | |
732 | if (err) { | |
733 | kfree(netpoll); | |
734 | goto out; | |
735 | } | |
736 | ||
737 | p->netpoll = netpoll; | |
738 | out: | |
739 | return err; | |
740 | } | |
741 | ||
742 | static void dsa_slave_netpoll_cleanup(struct net_device *dev) | |
743 | { | |
744 | struct dsa_slave_priv *p = netdev_priv(dev); | |
745 | struct netpoll *netpoll = p->netpoll; | |
746 | ||
747 | if (!netpoll) | |
748 | return; | |
749 | ||
750 | p->netpoll = NULL; | |
751 | ||
752 | __netpoll_free_async(netpoll); | |
753 | } | |
754 | ||
755 | static void dsa_slave_poll_controller(struct net_device *dev) | |
756 | { | |
757 | } | |
758 | #endif | |
759 | ||
91da11f8 LB |
760 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
761 | .get_settings = dsa_slave_get_settings, | |
762 | .set_settings = dsa_slave_set_settings, | |
763 | .get_drvinfo = dsa_slave_get_drvinfo, | |
3d762a0f GR |
764 | .get_regs_len = dsa_slave_get_regs_len, |
765 | .get_regs = dsa_slave_get_regs, | |
91da11f8 LB |
766 | .nway_reset = dsa_slave_nway_reset, |
767 | .get_link = dsa_slave_get_link, | |
6793abb4 GR |
768 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
769 | .get_eeprom = dsa_slave_get_eeprom, | |
770 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
771 | .get_strings = dsa_slave_get_strings, |
772 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
773 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
774 | .set_wol = dsa_slave_set_wol, |
775 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
776 | .set_eee = dsa_slave_set_eee, |
777 | .get_eee = dsa_slave_get_eee, | |
91da11f8 LB |
778 | }; |
779 | ||
3e8a72d1 | 780 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
781 | .ndo_open = dsa_slave_open, |
782 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 783 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
784 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
785 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 786 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
ba14d9eb VD |
787 | .ndo_fdb_add = switchdev_port_fdb_add, |
788 | .ndo_fdb_del = switchdev_port_fdb_del, | |
789 | .ndo_fdb_dump = switchdev_port_fdb_dump, | |
d442ad4a | 790 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 791 | .ndo_get_iflink = dsa_slave_get_iflink, |
04ff53f9 FF |
792 | #ifdef CONFIG_NET_POLL_CONTROLLER |
793 | .ndo_netpoll_setup = dsa_slave_netpoll_setup, | |
794 | .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, | |
795 | .ndo_poll_controller = dsa_slave_poll_controller, | |
796 | #endif | |
98237d43 SF |
797 | }; |
798 | ||
9d47c0a2 | 799 | static const struct switchdev_ops dsa_slave_switchdev_ops = { |
f8e20a9f | 800 | .switchdev_port_attr_get = dsa_slave_port_attr_get, |
35636062 | 801 | .switchdev_port_attr_set = dsa_slave_port_attr_set, |
ba14d9eb VD |
802 | .switchdev_port_obj_add = dsa_slave_port_obj_add, |
803 | .switchdev_port_obj_del = dsa_slave_port_obj_del, | |
804 | .switchdev_port_obj_dump = dsa_slave_port_obj_dump, | |
d442ad4a | 805 | }; |
91da11f8 | 806 | |
0d8bcdd3 FF |
807 | static void dsa_slave_adjust_link(struct net_device *dev) |
808 | { | |
809 | struct dsa_slave_priv *p = netdev_priv(dev); | |
ec9436ba | 810 | struct dsa_switch *ds = p->parent; |
0d8bcdd3 FF |
811 | unsigned int status_changed = 0; |
812 | ||
813 | if (p->old_link != p->phy->link) { | |
814 | status_changed = 1; | |
815 | p->old_link = p->phy->link; | |
816 | } | |
817 | ||
818 | if (p->old_duplex != p->phy->duplex) { | |
819 | status_changed = 1; | |
820 | p->old_duplex = p->phy->duplex; | |
821 | } | |
822 | ||
823 | if (p->old_pause != p->phy->pause) { | |
824 | status_changed = 1; | |
825 | p->old_pause = p->phy->pause; | |
826 | } | |
827 | ||
ec9436ba FF |
828 | if (ds->drv->adjust_link && status_changed) |
829 | ds->drv->adjust_link(ds, p->port, p->phy); | |
830 | ||
0d8bcdd3 FF |
831 | if (status_changed) |
832 | phy_print_status(p->phy); | |
833 | } | |
834 | ||
ce31b31c FF |
835 | static int dsa_slave_fixed_link_update(struct net_device *dev, |
836 | struct fixed_phy_status *status) | |
837 | { | |
838 | struct dsa_slave_priv *p = netdev_priv(dev); | |
839 | struct dsa_switch *ds = p->parent; | |
840 | ||
841 | if (ds->drv->fixed_link_update) | |
842 | ds->drv->fixed_link_update(ds, p->port, status); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
91da11f8 | 847 | /* slave device setup *******************************************************/ |
c305c165 | 848 | static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
cd28a1a9 FF |
849 | struct net_device *slave_dev, |
850 | int addr) | |
c305c165 FF |
851 | { |
852 | struct dsa_switch *ds = p->parent; | |
853 | ||
cd28a1a9 | 854 | p->phy = ds->slave_mii_bus->phy_map[addr]; |
c305c165 FF |
855 | if (!p->phy) |
856 | return -ENODEV; | |
857 | ||
858 | /* Use already configured phy mode */ | |
211c504a FF |
859 | if (p->phy_interface == PHY_INTERFACE_MODE_NA) |
860 | p->phy_interface = p->phy->interface; | |
c305c165 FF |
861 | phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, |
862 | p->phy_interface); | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
9697f1cd | 867 | static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
0d8bcdd3 FF |
868 | struct net_device *slave_dev) |
869 | { | |
870 | struct dsa_switch *ds = p->parent; | |
871 | struct dsa_chip_data *cd = ds->pd; | |
872 | struct device_node *phy_dn, *port_dn; | |
ce31b31c | 873 | bool phy_is_fixed = false; |
6819563e | 874 | u32 phy_flags = 0; |
19334920 | 875 | int mode, ret; |
0d8bcdd3 FF |
876 | |
877 | port_dn = cd->port_dn[p->port]; | |
19334920 GR |
878 | mode = of_get_phy_mode(port_dn); |
879 | if (mode < 0) | |
880 | mode = PHY_INTERFACE_MODE_NA; | |
881 | p->phy_interface = mode; | |
0d8bcdd3 FF |
882 | |
883 | phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); | |
884 | if (of_phy_is_fixed_link(port_dn)) { | |
885 | /* In the case of a fixed PHY, the DT node associated | |
886 | * to the fixed PHY is the Port DT node | |
887 | */ | |
888 | ret = of_phy_register_fixed_link(port_dn); | |
889 | if (ret) { | |
a2ae6007 | 890 | netdev_err(slave_dev, "failed to register fixed PHY\n"); |
9697f1cd | 891 | return ret; |
0d8bcdd3 | 892 | } |
ce31b31c | 893 | phy_is_fixed = true; |
0d8bcdd3 FF |
894 | phy_dn = port_dn; |
895 | } | |
896 | ||
6819563e FF |
897 | if (ds->drv->get_phy_flags) |
898 | phy_flags = ds->drv->get_phy_flags(ds, p->port); | |
899 | ||
cd28a1a9 FF |
900 | if (phy_dn) { |
901 | ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn); | |
902 | /* If this PHY address is part of phys_mii_mask, which means | |
903 | * that we need to divert reads and writes to/from it, then we | |
904 | * want to bind this device using the slave MII bus created by | |
905 | * DSA to make that happen. | |
906 | */ | |
96026d05 FF |
907 | if (!phy_is_fixed && ret >= 0 && |
908 | (ds->phys_mii_mask & (1 << ret))) { | |
cd28a1a9 FF |
909 | ret = dsa_slave_phy_connect(p, slave_dev, ret); |
910 | if (ret) | |
911 | return ret; | |
912 | } else { | |
913 | p->phy = of_phy_connect(slave_dev, phy_dn, | |
914 | dsa_slave_adjust_link, | |
915 | phy_flags, | |
916 | p->phy_interface); | |
917 | } | |
918 | } | |
0d8bcdd3 | 919 | |
ce31b31c FF |
920 | if (p->phy && phy_is_fixed) |
921 | fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); | |
922 | ||
0d8bcdd3 FF |
923 | /* We could not connect to a designated PHY, so use the switch internal |
924 | * MDIO bus instead | |
925 | */ | |
b31f65fb | 926 | if (!p->phy) { |
cd28a1a9 | 927 | ret = dsa_slave_phy_connect(p, slave_dev, p->port); |
c305c165 FF |
928 | if (ret) |
929 | return ret; | |
b31f65fb | 930 | } else { |
a2ae6007 JP |
931 | netdev_info(slave_dev, "attached PHY at address %d [%s]\n", |
932 | p->phy->addr, p->phy->drv->name); | |
b31f65fb | 933 | } |
9697f1cd FF |
934 | |
935 | return 0; | |
0d8bcdd3 FF |
936 | } |
937 | ||
448b4482 AL |
938 | static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
939 | static void dsa_slave_set_lockdep_class_one(struct net_device *dev, | |
940 | struct netdev_queue *txq, | |
941 | void *_unused) | |
942 | { | |
943 | lockdep_set_class(&txq->_xmit_lock, | |
944 | &dsa_slave_netdev_xmit_lock_key); | |
945 | } | |
946 | ||
24462549 FF |
947 | int dsa_slave_suspend(struct net_device *slave_dev) |
948 | { | |
949 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
950 | ||
24462549 FF |
951 | if (p->phy) { |
952 | phy_stop(p->phy); | |
953 | p->old_pause = -1; | |
954 | p->old_link = -1; | |
955 | p->old_duplex = -1; | |
956 | phy_suspend(p->phy); | |
957 | } | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
962 | int dsa_slave_resume(struct net_device *slave_dev) | |
963 | { | |
964 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
965 | ||
966 | netif_device_attach(slave_dev); | |
967 | ||
968 | if (p->phy) { | |
969 | phy_resume(p->phy); | |
970 | phy_start(p->phy); | |
971 | } | |
972 | ||
973 | return 0; | |
974 | } | |
975 | ||
d87d6f44 GR |
976 | int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
977 | int port, char *name) | |
91da11f8 | 978 | { |
e84665c9 | 979 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
980 | struct net_device *slave_dev; |
981 | struct dsa_slave_priv *p; | |
982 | int ret; | |
983 | ||
c835a677 TG |
984 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
985 | NET_NAME_UNKNOWN, ether_setup); | |
91da11f8 | 986 | if (slave_dev == NULL) |
d87d6f44 | 987 | return -ENOMEM; |
91da11f8 LB |
988 | |
989 | slave_dev->features = master->vlan_features; | |
7ad24ea4 | 990 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
2fcc8005 | 991 | eth_hw_addr_inherit(slave_dev, master); |
91da11f8 | 992 | slave_dev->tx_queue_len = 0; |
3e8a72d1 | 993 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
9d47c0a2 | 994 | slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; |
d442ad4a | 995 | |
448b4482 AL |
996 | netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
997 | NULL); | |
998 | ||
5075314e AD |
999 | SET_NETDEV_DEV(slave_dev, parent); |
1000 | slave_dev->dev.of_node = ds->pd->port_dn[port]; | |
1001 | slave_dev->vlan_features = master->vlan_features; | |
1002 | ||
1003 | p = netdev_priv(slave_dev); | |
1004 | p->dev = slave_dev; | |
1005 | p->parent = ds; | |
1006 | p->port = port; | |
1007 | ||
e84665c9 | 1008 | switch (ds->dst->tag_protocol) { |
cf85d08f | 1009 | #ifdef CONFIG_NET_DSA_TAG_DSA |
ac7a04c3 | 1010 | case DSA_TAG_PROTO_DSA: |
5075314e | 1011 | p->xmit = dsa_netdev_ops.xmit; |
cf85d08f LB |
1012 | break; |
1013 | #endif | |
91da11f8 | 1014 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
ac7a04c3 | 1015 | case DSA_TAG_PROTO_EDSA: |
5075314e | 1016 | p->xmit = edsa_netdev_ops.xmit; |
91da11f8 | 1017 | break; |
396138f0 LB |
1018 | #endif |
1019 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
ac7a04c3 | 1020 | case DSA_TAG_PROTO_TRAILER: |
5075314e | 1021 | p->xmit = trailer_netdev_ops.xmit; |
396138f0 | 1022 | break; |
5037d532 FF |
1023 | #endif |
1024 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
ac7a04c3 | 1025 | case DSA_TAG_PROTO_BRCM: |
5075314e | 1026 | p->xmit = brcm_netdev_ops.xmit; |
5037d532 | 1027 | break; |
91da11f8 LB |
1028 | #endif |
1029 | default: | |
5075314e | 1030 | p->xmit = dsa_slave_notag_xmit; |
5aed85ce | 1031 | break; |
91da11f8 | 1032 | } |
d442ad4a | 1033 | |
0d8bcdd3 FF |
1034 | p->old_pause = -1; |
1035 | p->old_link = -1; | |
1036 | p->old_duplex = -1; | |
1037 | ||
9697f1cd FF |
1038 | ret = dsa_slave_phy_setup(p, slave_dev); |
1039 | if (ret) { | |
1040 | free_netdev(slave_dev); | |
d87d6f44 | 1041 | return ret; |
9697f1cd | 1042 | } |
91da11f8 | 1043 | |
d87d6f44 | 1044 | ds->ports[port] = slave_dev; |
91da11f8 LB |
1045 | ret = register_netdev(slave_dev); |
1046 | if (ret) { | |
a2ae6007 JP |
1047 | netdev_err(master, "error %d registering interface %s\n", |
1048 | ret, slave_dev->name); | |
9697f1cd | 1049 | phy_disconnect(p->phy); |
d87d6f44 | 1050 | ds->ports[port] = NULL; |
91da11f8 | 1051 | free_netdev(slave_dev); |
d87d6f44 | 1052 | return ret; |
91da11f8 LB |
1053 | } |
1054 | ||
1055 | netif_carrier_off(slave_dev); | |
1056 | ||
d87d6f44 | 1057 | return 0; |
91da11f8 | 1058 | } |
b73adef6 FF |
1059 | |
1060 | static bool dsa_slave_dev_check(struct net_device *dev) | |
1061 | { | |
1062 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
1063 | } | |
1064 | ||
1065 | static int dsa_slave_master_changed(struct net_device *dev) | |
1066 | { | |
1067 | struct net_device *master = netdev_master_upper_dev_get(dev); | |
b06b107a | 1068 | struct dsa_slave_priv *p = netdev_priv(dev); |
b73adef6 FF |
1069 | int err = 0; |
1070 | ||
1071 | if (master && master->rtnl_link_ops && | |
1072 | !strcmp(master->rtnl_link_ops->kind, "bridge")) | |
1073 | err = dsa_slave_bridge_port_join(dev, master); | |
b06b107a | 1074 | else if (dsa_port_is_bridged(p)) |
b73adef6 FF |
1075 | err = dsa_slave_bridge_port_leave(dev); |
1076 | ||
1077 | return err; | |
1078 | } | |
1079 | ||
1080 | int dsa_slave_netdevice_event(struct notifier_block *unused, | |
1081 | unsigned long event, void *ptr) | |
1082 | { | |
1083 | struct net_device *dev; | |
1084 | int err = 0; | |
1085 | ||
1086 | switch (event) { | |
1087 | case NETDEV_CHANGEUPPER: | |
1088 | dev = netdev_notifier_info_to_dev(ptr); | |
1089 | if (!dsa_slave_dev_check(dev)) | |
1090 | goto out; | |
1091 | ||
1092 | err = dsa_slave_master_changed(dev); | |
1093 | if (err) | |
1094 | netdev_warn(dev, "failed to reflect master change\n"); | |
1095 | ||
1096 | break; | |
1097 | } | |
1098 | ||
1099 | out: | |
1100 | return NOTIFY_DONE; | |
1101 | } |