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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> | |
7f854420 | 18 | #include <linux/mdio.h> |
b73adef6 | 19 | #include <net/rtnetlink.h> |
98237d43 | 20 | #include <net/switchdev.h> |
b73adef6 | 21 | #include <linux/if_bridge.h> |
04ff53f9 | 22 | #include <linux/netpoll.h> |
91da11f8 LB |
23 | #include "dsa_priv.h" |
24 | ||
25 | /* slave mii_bus handling ***************************************************/ | |
26 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
27 | { | |
28 | struct dsa_switch *ds = bus->priv; | |
29 | ||
0d8bcdd3 | 30 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
31 | return ds->drv->phy_read(ds, addr, reg); |
32 | ||
33 | return 0xffff; | |
34 | } | |
35 | ||
36 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
37 | { | |
38 | struct dsa_switch *ds = bus->priv; | |
39 | ||
0d8bcdd3 | 40 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
41 | return ds->drv->phy_write(ds, addr, reg, val); |
42 | ||
43 | return 0; | |
44 | } | |
45 | ||
46 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
47 | { | |
48 | ds->slave_mii_bus->priv = (void *)ds; | |
49 | ds->slave_mii_bus->name = "dsa slave smi"; | |
50 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
51 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
f490be04 FF |
52 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x", |
53 | ds->index, ds->pd->sw_addr); | |
b4d2394d | 54 | ds->slave_mii_bus->parent = ds->master_dev; |
24df8986 | 55 | ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
91da11f8 LB |
56 | } |
57 | ||
58 | ||
59 | /* slave device handling ****************************************************/ | |
abd2be00 | 60 | static int dsa_slave_get_iflink(const struct net_device *dev) |
c0840801 LB |
61 | { |
62 | struct dsa_slave_priv *p = netdev_priv(dev); | |
c0840801 | 63 | |
abd2be00 | 64 | return p->parent->dst->master_netdev->ifindex; |
c0840801 LB |
65 | } |
66 | ||
b73adef6 FF |
67 | static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p) |
68 | { | |
69 | return !!p->bridge_dev; | |
70 | } | |
71 | ||
91da11f8 LB |
72 | static int dsa_slave_open(struct net_device *dev) |
73 | { | |
df02c6ff | 74 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 75 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 76 | struct dsa_switch *ds = p->parent; |
b73adef6 FF |
77 | u8 stp_state = dsa_port_is_bridged(p) ? |
78 | BR_STATE_BLOCKING : BR_STATE_FORWARDING; | |
df02c6ff LB |
79 | int err; |
80 | ||
81 | if (!(master->flags & IFF_UP)) | |
82 | return -ENETDOWN; | |
83 | ||
8feedbb4 | 84 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 85 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
86 | if (err < 0) |
87 | goto out; | |
88 | } | |
89 | ||
90 | if (dev->flags & IFF_ALLMULTI) { | |
91 | err = dev_set_allmulti(master, 1); | |
92 | if (err < 0) | |
93 | goto del_unicast; | |
94 | } | |
95 | if (dev->flags & IFF_PROMISC) { | |
96 | err = dev_set_promiscuity(master, 1); | |
97 | if (err < 0) | |
98 | goto clear_allmulti; | |
99 | } | |
100 | ||
b2f2af21 FF |
101 | if (ds->drv->port_enable) { |
102 | err = ds->drv->port_enable(ds, p->port, p->phy); | |
103 | if (err) | |
104 | goto clear_promisc; | |
105 | } | |
106 | ||
b73adef6 FF |
107 | if (ds->drv->port_stp_update) |
108 | ds->drv->port_stp_update(ds, p->port, stp_state); | |
109 | ||
f7f1de51 FF |
110 | if (p->phy) |
111 | phy_start(p->phy); | |
112 | ||
91da11f8 | 113 | return 0; |
df02c6ff | 114 | |
b2f2af21 FF |
115 | clear_promisc: |
116 | if (dev->flags & IFF_PROMISC) | |
4fdeddfe | 117 | dev_set_promiscuity(master, -1); |
df02c6ff LB |
118 | clear_allmulti: |
119 | if (dev->flags & IFF_ALLMULTI) | |
120 | dev_set_allmulti(master, -1); | |
121 | del_unicast: | |
8feedbb4 | 122 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 123 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
124 | out: |
125 | return err; | |
91da11f8 LB |
126 | } |
127 | ||
128 | static int dsa_slave_close(struct net_device *dev) | |
129 | { | |
df02c6ff | 130 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 131 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 132 | struct dsa_switch *ds = p->parent; |
df02c6ff | 133 | |
f7f1de51 FF |
134 | if (p->phy) |
135 | phy_stop(p->phy); | |
136 | ||
df02c6ff | 137 | dev_mc_unsync(master, dev); |
a748ee24 | 138 | dev_uc_unsync(master, dev); |
df02c6ff LB |
139 | if (dev->flags & IFF_ALLMULTI) |
140 | dev_set_allmulti(master, -1); | |
141 | if (dev->flags & IFF_PROMISC) | |
142 | dev_set_promiscuity(master, -1); | |
143 | ||
8feedbb4 | 144 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 145 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 146 | |
b2f2af21 FF |
147 | if (ds->drv->port_disable) |
148 | ds->drv->port_disable(ds, p->port, p->phy); | |
149 | ||
b73adef6 FF |
150 | if (ds->drv->port_stp_update) |
151 | ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED); | |
152 | ||
91da11f8 LB |
153 | return 0; |
154 | } | |
155 | ||
156 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
157 | { | |
158 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 159 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
160 | |
161 | if (change & IFF_ALLMULTI) | |
162 | dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
163 | if (change & IFF_PROMISC) | |
164 | dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); | |
165 | } | |
166 | ||
167 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
168 | { | |
169 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 170 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
171 | |
172 | dev_mc_sync(master, dev); | |
a748ee24 | 173 | dev_uc_sync(master, dev); |
91da11f8 LB |
174 | } |
175 | ||
df02c6ff | 176 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 177 | { |
df02c6ff | 178 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 179 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
180 | struct sockaddr *addr = a; |
181 | int err; | |
182 | ||
183 | if (!is_valid_ether_addr(addr->sa_data)) | |
184 | return -EADDRNOTAVAIL; | |
185 | ||
186 | if (!(dev->flags & IFF_UP)) | |
187 | goto out; | |
188 | ||
8feedbb4 | 189 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 190 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
191 | if (err < 0) |
192 | return err; | |
193 | } | |
194 | ||
8feedbb4 | 195 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 196 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
197 | |
198 | out: | |
d08f161a | 199 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
91da11f8 LB |
200 | |
201 | return 0; | |
202 | } | |
203 | ||
11149536 | 204 | static int dsa_slave_port_vlan_add(struct net_device *dev, |
8f24f309 | 205 | const struct switchdev_obj_port_vlan *vlan, |
f8db8348 | 206 | struct switchdev_trans *trans) |
11149536 | 207 | { |
11149536 VD |
208 | struct dsa_slave_priv *p = netdev_priv(dev); |
209 | struct dsa_switch *ds = p->parent; | |
11149536 VD |
210 | int err; |
211 | ||
79a62eb2 | 212 | if (switchdev_trans_ph_prepare(trans)) { |
76e398a6 | 213 | if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add) |
11149536 VD |
214 | return -EOPNOTSUPP; |
215 | ||
76e398a6 VD |
216 | err = ds->drv->port_vlan_prepare(ds, p->port, vlan, trans); |
217 | if (err) | |
218 | return err; | |
79a62eb2 | 219 | } else { |
76e398a6 VD |
220 | err = ds->drv->port_vlan_add(ds, p->port, vlan, trans); |
221 | if (err) | |
222 | return err; | |
11149536 VD |
223 | } |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
228 | static int dsa_slave_port_vlan_del(struct net_device *dev, | |
8f24f309 | 229 | const struct switchdev_obj_port_vlan *vlan) |
11149536 | 230 | { |
11149536 VD |
231 | struct dsa_slave_priv *p = netdev_priv(dev); |
232 | struct dsa_switch *ds = p->parent; | |
11149536 VD |
233 | |
234 | if (!ds->drv->port_vlan_del) | |
235 | return -EOPNOTSUPP; | |
236 | ||
76e398a6 | 237 | return ds->drv->port_vlan_del(ds, p->port, vlan); |
11149536 VD |
238 | } |
239 | ||
240 | static int dsa_slave_port_vlan_dump(struct net_device *dev, | |
8f24f309 | 241 | struct switchdev_obj_port_vlan *vlan, |
648b4a99 | 242 | switchdev_obj_dump_cb_t *cb) |
11149536 | 243 | { |
11149536 VD |
244 | struct dsa_slave_priv *p = netdev_priv(dev); |
245 | struct dsa_switch *ds = p->parent; | |
11149536 | 246 | |
65aebfc0 VD |
247 | if (ds->drv->port_vlan_dump) |
248 | return ds->drv->port_vlan_dump(ds, p->port, vlan, cb); | |
249 | ||
477b1845 | 250 | return -EOPNOTSUPP; |
11149536 VD |
251 | } |
252 | ||
ba14d9eb | 253 | static int dsa_slave_port_fdb_add(struct net_device *dev, |
52ba57cf | 254 | const struct switchdev_obj_port_fdb *fdb, |
f8db8348 | 255 | struct switchdev_trans *trans) |
cdf09697 DM |
256 | { |
257 | struct dsa_slave_priv *p = netdev_priv(dev); | |
258 | struct dsa_switch *ds = p->parent; | |
146a3206 VD |
259 | int ret; |
260 | ||
261 | if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add) | |
262 | return -EOPNOTSUPP; | |
cdf09697 | 263 | |
79a62eb2 | 264 | if (switchdev_trans_ph_prepare(trans)) |
146a3206 | 265 | ret = ds->drv->port_fdb_prepare(ds, p->port, fdb, trans); |
79a62eb2 | 266 | else |
1f36faf2 | 267 | ret = ds->drv->port_fdb_add(ds, p->port, fdb, trans); |
cdf09697 DM |
268 | |
269 | return ret; | |
270 | } | |
271 | ||
ba14d9eb | 272 | static int dsa_slave_port_fdb_del(struct net_device *dev, |
52ba57cf | 273 | const struct switchdev_obj_port_fdb *fdb) |
cdf09697 DM |
274 | { |
275 | struct dsa_slave_priv *p = netdev_priv(dev); | |
276 | struct dsa_switch *ds = p->parent; | |
277 | int ret = -EOPNOTSUPP; | |
278 | ||
2a778e1b | 279 | if (ds->drv->port_fdb_del) |
8057b3e7 | 280 | ret = ds->drv->port_fdb_del(ds, p->port, fdb); |
cdf09697 DM |
281 | |
282 | return ret; | |
283 | } | |
284 | ||
ba14d9eb | 285 | static int dsa_slave_port_fdb_dump(struct net_device *dev, |
52ba57cf | 286 | struct switchdev_obj_port_fdb *fdb, |
648b4a99 | 287 | switchdev_obj_dump_cb_t *cb) |
cdf09697 DM |
288 | { |
289 | struct dsa_slave_priv *p = netdev_priv(dev); | |
290 | struct dsa_switch *ds = p->parent; | |
cdf09697 | 291 | |
ea70ba98 VD |
292 | if (ds->drv->port_fdb_dump) |
293 | return ds->drv->port_fdb_dump(ds, p->port, fdb, cb); | |
294 | ||
1a49a2fb | 295 | return -EOPNOTSUPP; |
cdf09697 DM |
296 | } |
297 | ||
91da11f8 LB |
298 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
299 | { | |
300 | struct dsa_slave_priv *p = netdev_priv(dev); | |
91da11f8 LB |
301 | |
302 | if (p->phy != NULL) | |
28b04113 | 303 | return phy_mii_ioctl(p->phy, ifr, cmd); |
91da11f8 LB |
304 | |
305 | return -EOPNOTSUPP; | |
306 | } | |
307 | ||
b73adef6 FF |
308 | static int dsa_slave_stp_update(struct net_device *dev, u8 state) |
309 | { | |
310 | struct dsa_slave_priv *p = netdev_priv(dev); | |
311 | struct dsa_switch *ds = p->parent; | |
312 | int ret = -EOPNOTSUPP; | |
313 | ||
314 | if (ds->drv->port_stp_update) | |
315 | ret = ds->drv->port_stp_update(ds, p->port, state); | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
fb2dabad VD |
320 | static int dsa_slave_vlan_filtering(struct net_device *dev, |
321 | const struct switchdev_attr *attr, | |
322 | struct switchdev_trans *trans) | |
323 | { | |
324 | struct dsa_slave_priv *p = netdev_priv(dev); | |
325 | struct dsa_switch *ds = p->parent; | |
326 | ||
327 | /* bridge skips -EOPNOTSUPP, so skip the prepare phase */ | |
328 | if (switchdev_trans_ph_prepare(trans)) | |
329 | return 0; | |
330 | ||
331 | if (ds->drv->port_vlan_filtering) | |
332 | return ds->drv->port_vlan_filtering(ds, p->port, | |
333 | attr->u.vlan_filtering); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
35636062 | 338 | static int dsa_slave_port_attr_set(struct net_device *dev, |
f7fadf30 | 339 | const struct switchdev_attr *attr, |
7ea6eb3f | 340 | struct switchdev_trans *trans) |
35636062 | 341 | { |
b8d866ac VD |
342 | struct dsa_slave_priv *p = netdev_priv(dev); |
343 | struct dsa_switch *ds = p->parent; | |
344 | int ret; | |
35636062 SF |
345 | |
346 | switch (attr->id) { | |
1f868398 | 347 | case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
b8d866ac VD |
348 | if (switchdev_trans_ph_prepare(trans)) |
349 | ret = ds->drv->port_stp_update ? 0 : -EOPNOTSUPP; | |
350 | else | |
351 | ret = ds->drv->port_stp_update(ds, p->port, | |
352 | attr->u.stp_state); | |
35636062 | 353 | break; |
fb2dabad VD |
354 | case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
355 | ret = dsa_slave_vlan_filtering(dev, attr, trans); | |
356 | break; | |
35636062 SF |
357 | default: |
358 | ret = -EOPNOTSUPP; | |
359 | break; | |
360 | } | |
361 | ||
362 | return ret; | |
363 | } | |
364 | ||
ba14d9eb | 365 | static int dsa_slave_port_obj_add(struct net_device *dev, |
648b4a99 | 366 | const struct switchdev_obj *obj, |
7ea6eb3f | 367 | struct switchdev_trans *trans) |
ba14d9eb VD |
368 | { |
369 | int err; | |
370 | ||
371 | /* For the prepare phase, ensure the full set of changes is feasable in | |
372 | * one go in order to signal a failure properly. If an operation is not | |
373 | * supported, return -EOPNOTSUPP. | |
374 | */ | |
375 | ||
9e8f4a54 | 376 | switch (obj->id) { |
57d80838 | 377 | case SWITCHDEV_OBJ_ID_PORT_FDB: |
648b4a99 JP |
378 | err = dsa_slave_port_fdb_add(dev, |
379 | SWITCHDEV_OBJ_PORT_FDB(obj), | |
380 | trans); | |
ba14d9eb | 381 | break; |
57d80838 | 382 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
648b4a99 JP |
383 | err = dsa_slave_port_vlan_add(dev, |
384 | SWITCHDEV_OBJ_PORT_VLAN(obj), | |
385 | trans); | |
11149536 | 386 | break; |
ba14d9eb VD |
387 | default: |
388 | err = -EOPNOTSUPP; | |
389 | break; | |
390 | } | |
391 | ||
392 | return err; | |
393 | } | |
394 | ||
395 | static int dsa_slave_port_obj_del(struct net_device *dev, | |
648b4a99 | 396 | const struct switchdev_obj *obj) |
ba14d9eb VD |
397 | { |
398 | int err; | |
399 | ||
9e8f4a54 | 400 | switch (obj->id) { |
57d80838 | 401 | case SWITCHDEV_OBJ_ID_PORT_FDB: |
648b4a99 JP |
402 | err = dsa_slave_port_fdb_del(dev, |
403 | SWITCHDEV_OBJ_PORT_FDB(obj)); | |
ba14d9eb | 404 | break; |
57d80838 | 405 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
648b4a99 JP |
406 | err = dsa_slave_port_vlan_del(dev, |
407 | SWITCHDEV_OBJ_PORT_VLAN(obj)); | |
11149536 | 408 | break; |
ba14d9eb VD |
409 | default: |
410 | err = -EOPNOTSUPP; | |
411 | break; | |
412 | } | |
413 | ||
414 | return err; | |
415 | } | |
416 | ||
417 | static int dsa_slave_port_obj_dump(struct net_device *dev, | |
648b4a99 JP |
418 | struct switchdev_obj *obj, |
419 | switchdev_obj_dump_cb_t *cb) | |
ba14d9eb VD |
420 | { |
421 | int err; | |
422 | ||
9e8f4a54 | 423 | switch (obj->id) { |
57d80838 | 424 | case SWITCHDEV_OBJ_ID_PORT_FDB: |
648b4a99 JP |
425 | err = dsa_slave_port_fdb_dump(dev, |
426 | SWITCHDEV_OBJ_PORT_FDB(obj), | |
427 | cb); | |
ba14d9eb | 428 | break; |
57d80838 | 429 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
648b4a99 JP |
430 | err = dsa_slave_port_vlan_dump(dev, |
431 | SWITCHDEV_OBJ_PORT_VLAN(obj), | |
432 | cb); | |
11149536 | 433 | break; |
ba14d9eb VD |
434 | default: |
435 | err = -EOPNOTSUPP; | |
436 | break; | |
437 | } | |
438 | ||
439 | return err; | |
440 | } | |
441 | ||
b73adef6 FF |
442 | static int dsa_slave_bridge_port_join(struct net_device *dev, |
443 | struct net_device *br) | |
444 | { | |
445 | struct dsa_slave_priv *p = netdev_priv(dev); | |
446 | struct dsa_switch *ds = p->parent; | |
447 | int ret = -EOPNOTSUPP; | |
448 | ||
449 | p->bridge_dev = br; | |
450 | ||
451 | if (ds->drv->port_join_bridge) | |
a6692754 | 452 | ret = ds->drv->port_join_bridge(ds, p->port, br); |
b73adef6 FF |
453 | |
454 | return ret; | |
455 | } | |
456 | ||
457 | static int dsa_slave_bridge_port_leave(struct net_device *dev) | |
458 | { | |
459 | struct dsa_slave_priv *p = netdev_priv(dev); | |
460 | struct dsa_switch *ds = p->parent; | |
461 | int ret = -EOPNOTSUPP; | |
462 | ||
463 | ||
464 | if (ds->drv->port_leave_bridge) | |
a6692754 | 465 | ret = ds->drv->port_leave_bridge(ds, p->port); |
b73adef6 FF |
466 | |
467 | p->bridge_dev = NULL; | |
468 | ||
469 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
470 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
471 | */ | |
472 | dsa_slave_stp_update(dev, BR_STATE_FORWARDING); | |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
f8e20a9f SF |
477 | static int dsa_slave_port_attr_get(struct net_device *dev, |
478 | struct switchdev_attr *attr) | |
b73adef6 FF |
479 | { |
480 | struct dsa_slave_priv *p = netdev_priv(dev); | |
481 | struct dsa_switch *ds = p->parent; | |
482 | ||
f8e20a9f | 483 | switch (attr->id) { |
1f868398 | 484 | case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: |
42275bd8 SF |
485 | attr->u.ppid.id_len = sizeof(ds->index); |
486 | memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len); | |
f8e20a9f SF |
487 | break; |
488 | default: | |
489 | return -EOPNOTSUPP; | |
490 | } | |
b73adef6 FF |
491 | |
492 | return 0; | |
493 | } | |
494 | ||
04ff53f9 FF |
495 | static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p, |
496 | struct sk_buff *skb) | |
497 | { | |
498 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
499 | if (p->netpoll) | |
500 | netpoll_send_skb(p->netpoll, skb); | |
501 | #else | |
502 | BUG(); | |
503 | #endif | |
504 | return NETDEV_TX_OK; | |
505 | } | |
506 | ||
3e8a72d1 FF |
507 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
508 | { | |
509 | struct dsa_slave_priv *p = netdev_priv(dev); | |
4ed70ce9 | 510 | struct sk_buff *nskb; |
3e8a72d1 | 511 | |
4ed70ce9 FF |
512 | dev->stats.tx_packets++; |
513 | dev->stats.tx_bytes += skb->len; | |
3e8a72d1 | 514 | |
4ed70ce9 FF |
515 | /* Transmit function may have to reallocate the original SKB */ |
516 | nskb = p->xmit(skb, dev); | |
517 | if (!nskb) | |
518 | return NETDEV_TX_OK; | |
5aed85ce | 519 | |
04ff53f9 FF |
520 | /* SKB for netpoll still need to be mangled with the protocol-specific |
521 | * tag to be successfully transmitted | |
522 | */ | |
523 | if (unlikely(netpoll_tx_running(dev))) | |
524 | return dsa_netpoll_send_skb(p, nskb); | |
525 | ||
4ed70ce9 FF |
526 | /* Queue the SKB for transmission on the parent interface, but |
527 | * do not modify its EtherType | |
528 | */ | |
529 | nskb->dev = p->parent->dst->master_netdev; | |
530 | dev_queue_xmit(nskb); | |
5aed85ce FF |
531 | |
532 | return NETDEV_TX_OK; | |
533 | } | |
534 | ||
4ed70ce9 FF |
535 | static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, |
536 | struct net_device *dev) | |
537 | { | |
538 | /* Just return the original SKB */ | |
539 | return skb; | |
540 | } | |
541 | ||
91da11f8 LB |
542 | |
543 | /* ethtool operations *******************************************************/ | |
544 | static int | |
545 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
546 | { | |
547 | struct dsa_slave_priv *p = netdev_priv(dev); | |
548 | int err; | |
549 | ||
550 | err = -EOPNOTSUPP; | |
551 | if (p->phy != NULL) { | |
552 | err = phy_read_status(p->phy); | |
553 | if (err == 0) | |
554 | err = phy_ethtool_gset(p->phy, cmd); | |
555 | } | |
556 | ||
557 | return err; | |
558 | } | |
559 | ||
560 | static int | |
561 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
562 | { | |
563 | struct dsa_slave_priv *p = netdev_priv(dev); | |
564 | ||
565 | if (p->phy != NULL) | |
566 | return phy_ethtool_sset(p->phy, cmd); | |
567 | ||
568 | return -EOPNOTSUPP; | |
569 | } | |
570 | ||
571 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
572 | struct ethtool_drvinfo *drvinfo) | |
573 | { | |
7826d43f JP |
574 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
575 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
576 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
577 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
578 | } |
579 | ||
3d762a0f GR |
580 | static int dsa_slave_get_regs_len(struct net_device *dev) |
581 | { | |
582 | struct dsa_slave_priv *p = netdev_priv(dev); | |
583 | struct dsa_switch *ds = p->parent; | |
584 | ||
585 | if (ds->drv->get_regs_len) | |
586 | return ds->drv->get_regs_len(ds, p->port); | |
587 | ||
588 | return -EOPNOTSUPP; | |
589 | } | |
590 | ||
591 | static void | |
592 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
593 | { | |
594 | struct dsa_slave_priv *p = netdev_priv(dev); | |
595 | struct dsa_switch *ds = p->parent; | |
596 | ||
597 | if (ds->drv->get_regs) | |
598 | ds->drv->get_regs(ds, p->port, regs, _p); | |
599 | } | |
600 | ||
91da11f8 LB |
601 | static int dsa_slave_nway_reset(struct net_device *dev) |
602 | { | |
603 | struct dsa_slave_priv *p = netdev_priv(dev); | |
604 | ||
605 | if (p->phy != NULL) | |
606 | return genphy_restart_aneg(p->phy); | |
607 | ||
608 | return -EOPNOTSUPP; | |
609 | } | |
610 | ||
611 | static u32 dsa_slave_get_link(struct net_device *dev) | |
612 | { | |
613 | struct dsa_slave_priv *p = netdev_priv(dev); | |
614 | ||
615 | if (p->phy != NULL) { | |
616 | genphy_update_link(p->phy); | |
617 | return p->phy->link; | |
618 | } | |
619 | ||
620 | return -EOPNOTSUPP; | |
621 | } | |
622 | ||
6793abb4 GR |
623 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
624 | { | |
625 | struct dsa_slave_priv *p = netdev_priv(dev); | |
626 | struct dsa_switch *ds = p->parent; | |
627 | ||
628 | if (ds->pd->eeprom_len) | |
629 | return ds->pd->eeprom_len; | |
630 | ||
631 | if (ds->drv->get_eeprom_len) | |
632 | return ds->drv->get_eeprom_len(ds); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
638 | struct ethtool_eeprom *eeprom, u8 *data) | |
639 | { | |
640 | struct dsa_slave_priv *p = netdev_priv(dev); | |
641 | struct dsa_switch *ds = p->parent; | |
642 | ||
643 | if (ds->drv->get_eeprom) | |
644 | return ds->drv->get_eeprom(ds, eeprom, data); | |
645 | ||
646 | return -EOPNOTSUPP; | |
647 | } | |
648 | ||
649 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
650 | struct ethtool_eeprom *eeprom, u8 *data) | |
651 | { | |
652 | struct dsa_slave_priv *p = netdev_priv(dev); | |
653 | struct dsa_switch *ds = p->parent; | |
654 | ||
655 | if (ds->drv->set_eeprom) | |
656 | return ds->drv->set_eeprom(ds, eeprom, data); | |
657 | ||
658 | return -EOPNOTSUPP; | |
659 | } | |
660 | ||
91da11f8 LB |
661 | static void dsa_slave_get_strings(struct net_device *dev, |
662 | uint32_t stringset, uint8_t *data) | |
663 | { | |
664 | struct dsa_slave_priv *p = netdev_priv(dev); | |
665 | struct dsa_switch *ds = p->parent; | |
666 | ||
667 | if (stringset == ETH_SS_STATS) { | |
668 | int len = ETH_GSTRING_LEN; | |
669 | ||
670 | strncpy(data, "tx_packets", len); | |
671 | strncpy(data + len, "tx_bytes", len); | |
672 | strncpy(data + 2 * len, "rx_packets", len); | |
673 | strncpy(data + 3 * len, "rx_bytes", len); | |
674 | if (ds->drv->get_strings != NULL) | |
675 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
676 | } | |
677 | } | |
678 | ||
679 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
680 | struct ethtool_stats *stats, | |
681 | uint64_t *data) | |
682 | { | |
683 | struct dsa_slave_priv *p = netdev_priv(dev); | |
684 | struct dsa_switch *ds = p->parent; | |
685 | ||
686 | data[0] = p->dev->stats.tx_packets; | |
687 | data[1] = p->dev->stats.tx_bytes; | |
688 | data[2] = p->dev->stats.rx_packets; | |
689 | data[3] = p->dev->stats.rx_bytes; | |
690 | if (ds->drv->get_ethtool_stats != NULL) | |
691 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
692 | } | |
693 | ||
694 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
695 | { | |
696 | struct dsa_slave_priv *p = netdev_priv(dev); | |
697 | struct dsa_switch *ds = p->parent; | |
698 | ||
699 | if (sset == ETH_SS_STATS) { | |
700 | int count; | |
701 | ||
702 | count = 4; | |
703 | if (ds->drv->get_sset_count != NULL) | |
704 | count += ds->drv->get_sset_count(ds); | |
705 | ||
706 | return count; | |
707 | } | |
708 | ||
709 | return -EOPNOTSUPP; | |
710 | } | |
711 | ||
19e57c4e FF |
712 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
713 | { | |
714 | struct dsa_slave_priv *p = netdev_priv(dev); | |
715 | struct dsa_switch *ds = p->parent; | |
716 | ||
717 | if (ds->drv->get_wol) | |
718 | ds->drv->get_wol(ds, p->port, w); | |
719 | } | |
720 | ||
721 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
722 | { | |
723 | struct dsa_slave_priv *p = netdev_priv(dev); | |
724 | struct dsa_switch *ds = p->parent; | |
725 | int ret = -EOPNOTSUPP; | |
726 | ||
727 | if (ds->drv->set_wol) | |
728 | ret = ds->drv->set_wol(ds, p->port, w); | |
729 | ||
730 | return ret; | |
731 | } | |
732 | ||
7905288f FF |
733 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
734 | { | |
735 | struct dsa_slave_priv *p = netdev_priv(dev); | |
736 | struct dsa_switch *ds = p->parent; | |
737 | int ret; | |
738 | ||
739 | if (!ds->drv->set_eee) | |
740 | return -EOPNOTSUPP; | |
741 | ||
742 | ret = ds->drv->set_eee(ds, p->port, p->phy, e); | |
743 | if (ret) | |
744 | return ret; | |
745 | ||
746 | if (p->phy) | |
747 | ret = phy_ethtool_set_eee(p->phy, e); | |
748 | ||
749 | return ret; | |
750 | } | |
751 | ||
752 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
753 | { | |
754 | struct dsa_slave_priv *p = netdev_priv(dev); | |
755 | struct dsa_switch *ds = p->parent; | |
756 | int ret; | |
757 | ||
758 | if (!ds->drv->get_eee) | |
759 | return -EOPNOTSUPP; | |
760 | ||
761 | ret = ds->drv->get_eee(ds, p->port, e); | |
762 | if (ret) | |
763 | return ret; | |
764 | ||
765 | if (p->phy) | |
766 | ret = phy_ethtool_get_eee(p->phy, e); | |
767 | ||
768 | return ret; | |
769 | } | |
770 | ||
04ff53f9 FF |
771 | #ifdef CONFIG_NET_POLL_CONTROLLER |
772 | static int dsa_slave_netpoll_setup(struct net_device *dev, | |
773 | struct netpoll_info *ni) | |
774 | { | |
775 | struct dsa_slave_priv *p = netdev_priv(dev); | |
776 | struct dsa_switch *ds = p->parent; | |
777 | struct net_device *master = ds->dst->master_netdev; | |
778 | struct netpoll *netpoll; | |
779 | int err = 0; | |
780 | ||
781 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
782 | if (!netpoll) | |
783 | return -ENOMEM; | |
784 | ||
785 | err = __netpoll_setup(netpoll, master); | |
786 | if (err) { | |
787 | kfree(netpoll); | |
788 | goto out; | |
789 | } | |
790 | ||
791 | p->netpoll = netpoll; | |
792 | out: | |
793 | return err; | |
794 | } | |
795 | ||
796 | static void dsa_slave_netpoll_cleanup(struct net_device *dev) | |
797 | { | |
798 | struct dsa_slave_priv *p = netdev_priv(dev); | |
799 | struct netpoll *netpoll = p->netpoll; | |
800 | ||
801 | if (!netpoll) | |
802 | return; | |
803 | ||
804 | p->netpoll = NULL; | |
805 | ||
806 | __netpoll_free_async(netpoll); | |
807 | } | |
808 | ||
809 | static void dsa_slave_poll_controller(struct net_device *dev) | |
810 | { | |
811 | } | |
812 | #endif | |
813 | ||
91da11f8 LB |
814 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
815 | .get_settings = dsa_slave_get_settings, | |
816 | .set_settings = dsa_slave_set_settings, | |
817 | .get_drvinfo = dsa_slave_get_drvinfo, | |
3d762a0f GR |
818 | .get_regs_len = dsa_slave_get_regs_len, |
819 | .get_regs = dsa_slave_get_regs, | |
91da11f8 LB |
820 | .nway_reset = dsa_slave_nway_reset, |
821 | .get_link = dsa_slave_get_link, | |
6793abb4 GR |
822 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
823 | .get_eeprom = dsa_slave_get_eeprom, | |
824 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
825 | .get_strings = dsa_slave_get_strings, |
826 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
827 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
828 | .set_wol = dsa_slave_set_wol, |
829 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
830 | .set_eee = dsa_slave_set_eee, |
831 | .get_eee = dsa_slave_get_eee, | |
91da11f8 LB |
832 | }; |
833 | ||
3e8a72d1 | 834 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
835 | .ndo_open = dsa_slave_open, |
836 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 837 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
838 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
839 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 840 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
ba14d9eb VD |
841 | .ndo_fdb_add = switchdev_port_fdb_add, |
842 | .ndo_fdb_del = switchdev_port_fdb_del, | |
843 | .ndo_fdb_dump = switchdev_port_fdb_dump, | |
d442ad4a | 844 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 845 | .ndo_get_iflink = dsa_slave_get_iflink, |
04ff53f9 FF |
846 | #ifdef CONFIG_NET_POLL_CONTROLLER |
847 | .ndo_netpoll_setup = dsa_slave_netpoll_setup, | |
848 | .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, | |
849 | .ndo_poll_controller = dsa_slave_poll_controller, | |
850 | #endif | |
11149536 VD |
851 | .ndo_bridge_getlink = switchdev_port_bridge_getlink, |
852 | .ndo_bridge_setlink = switchdev_port_bridge_setlink, | |
853 | .ndo_bridge_dellink = switchdev_port_bridge_dellink, | |
98237d43 SF |
854 | }; |
855 | ||
9d47c0a2 | 856 | static const struct switchdev_ops dsa_slave_switchdev_ops = { |
f8e20a9f | 857 | .switchdev_port_attr_get = dsa_slave_port_attr_get, |
35636062 | 858 | .switchdev_port_attr_set = dsa_slave_port_attr_set, |
ba14d9eb VD |
859 | .switchdev_port_obj_add = dsa_slave_port_obj_add, |
860 | .switchdev_port_obj_del = dsa_slave_port_obj_del, | |
861 | .switchdev_port_obj_dump = dsa_slave_port_obj_dump, | |
d442ad4a | 862 | }; |
91da11f8 | 863 | |
f37db85d FF |
864 | static struct device_type dsa_type = { |
865 | .name = "dsa", | |
866 | }; | |
867 | ||
0d8bcdd3 FF |
868 | static void dsa_slave_adjust_link(struct net_device *dev) |
869 | { | |
870 | struct dsa_slave_priv *p = netdev_priv(dev); | |
ec9436ba | 871 | struct dsa_switch *ds = p->parent; |
0d8bcdd3 FF |
872 | unsigned int status_changed = 0; |
873 | ||
874 | if (p->old_link != p->phy->link) { | |
875 | status_changed = 1; | |
876 | p->old_link = p->phy->link; | |
877 | } | |
878 | ||
879 | if (p->old_duplex != p->phy->duplex) { | |
880 | status_changed = 1; | |
881 | p->old_duplex = p->phy->duplex; | |
882 | } | |
883 | ||
884 | if (p->old_pause != p->phy->pause) { | |
885 | status_changed = 1; | |
886 | p->old_pause = p->phy->pause; | |
887 | } | |
888 | ||
ec9436ba FF |
889 | if (ds->drv->adjust_link && status_changed) |
890 | ds->drv->adjust_link(ds, p->port, p->phy); | |
891 | ||
0d8bcdd3 FF |
892 | if (status_changed) |
893 | phy_print_status(p->phy); | |
894 | } | |
895 | ||
ce31b31c FF |
896 | static int dsa_slave_fixed_link_update(struct net_device *dev, |
897 | struct fixed_phy_status *status) | |
898 | { | |
899 | struct dsa_slave_priv *p = netdev_priv(dev); | |
900 | struct dsa_switch *ds = p->parent; | |
901 | ||
902 | if (ds->drv->fixed_link_update) | |
903 | ds->drv->fixed_link_update(ds, p->port, status); | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
91da11f8 | 908 | /* slave device setup *******************************************************/ |
c305c165 | 909 | static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
cd28a1a9 FF |
910 | struct net_device *slave_dev, |
911 | int addr) | |
c305c165 FF |
912 | { |
913 | struct dsa_switch *ds = p->parent; | |
914 | ||
7f854420 | 915 | p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr); |
d25b8e74 RK |
916 | if (!p->phy) { |
917 | netdev_err(slave_dev, "no phy at %d\n", addr); | |
c305c165 | 918 | return -ENODEV; |
d25b8e74 | 919 | } |
c305c165 FF |
920 | |
921 | /* Use already configured phy mode */ | |
211c504a FF |
922 | if (p->phy_interface == PHY_INTERFACE_MODE_NA) |
923 | p->phy_interface = p->phy->interface; | |
c305c165 FF |
924 | phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, |
925 | p->phy_interface); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
9697f1cd | 930 | static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
0d8bcdd3 FF |
931 | struct net_device *slave_dev) |
932 | { | |
933 | struct dsa_switch *ds = p->parent; | |
934 | struct dsa_chip_data *cd = ds->pd; | |
935 | struct device_node *phy_dn, *port_dn; | |
ce31b31c | 936 | bool phy_is_fixed = false; |
6819563e | 937 | u32 phy_flags = 0; |
19334920 | 938 | int mode, ret; |
0d8bcdd3 FF |
939 | |
940 | port_dn = cd->port_dn[p->port]; | |
19334920 GR |
941 | mode = of_get_phy_mode(port_dn); |
942 | if (mode < 0) | |
943 | mode = PHY_INTERFACE_MODE_NA; | |
944 | p->phy_interface = mode; | |
0d8bcdd3 FF |
945 | |
946 | phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); | |
947 | if (of_phy_is_fixed_link(port_dn)) { | |
948 | /* In the case of a fixed PHY, the DT node associated | |
949 | * to the fixed PHY is the Port DT node | |
950 | */ | |
951 | ret = of_phy_register_fixed_link(port_dn); | |
952 | if (ret) { | |
d25b8e74 | 953 | netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret); |
9697f1cd | 954 | return ret; |
0d8bcdd3 | 955 | } |
ce31b31c | 956 | phy_is_fixed = true; |
0d8bcdd3 FF |
957 | phy_dn = port_dn; |
958 | } | |
959 | ||
6819563e FF |
960 | if (ds->drv->get_phy_flags) |
961 | phy_flags = ds->drv->get_phy_flags(ds, p->port); | |
962 | ||
cd28a1a9 | 963 | if (phy_dn) { |
d25b8e74 RK |
964 | int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn); |
965 | ||
cd28a1a9 FF |
966 | /* If this PHY address is part of phys_mii_mask, which means |
967 | * that we need to divert reads and writes to/from it, then we | |
968 | * want to bind this device using the slave MII bus created by | |
969 | * DSA to make that happen. | |
970 | */ | |
d25b8e74 RK |
971 | if (!phy_is_fixed && phy_id >= 0 && |
972 | (ds->phys_mii_mask & (1 << phy_id))) { | |
973 | ret = dsa_slave_phy_connect(p, slave_dev, phy_id); | |
974 | if (ret) { | |
975 | netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret); | |
cd28a1a9 | 976 | return ret; |
d25b8e74 | 977 | } |
cd28a1a9 FF |
978 | } else { |
979 | p->phy = of_phy_connect(slave_dev, phy_dn, | |
980 | dsa_slave_adjust_link, | |
981 | phy_flags, | |
982 | p->phy_interface); | |
983 | } | |
984 | } | |
0d8bcdd3 | 985 | |
ce31b31c FF |
986 | if (p->phy && phy_is_fixed) |
987 | fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); | |
988 | ||
0d8bcdd3 FF |
989 | /* We could not connect to a designated PHY, so use the switch internal |
990 | * MDIO bus instead | |
991 | */ | |
b31f65fb | 992 | if (!p->phy) { |
cd28a1a9 | 993 | ret = dsa_slave_phy_connect(p, slave_dev, p->port); |
d25b8e74 RK |
994 | if (ret) { |
995 | netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret); | |
c305c165 | 996 | return ret; |
d25b8e74 | 997 | } |
b31f65fb | 998 | } |
9697f1cd | 999 | |
2220943a AL |
1000 | phy_attached_info(p->phy); |
1001 | ||
9697f1cd | 1002 | return 0; |
0d8bcdd3 FF |
1003 | } |
1004 | ||
448b4482 AL |
1005 | static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
1006 | static void dsa_slave_set_lockdep_class_one(struct net_device *dev, | |
1007 | struct netdev_queue *txq, | |
1008 | void *_unused) | |
1009 | { | |
1010 | lockdep_set_class(&txq->_xmit_lock, | |
1011 | &dsa_slave_netdev_xmit_lock_key); | |
1012 | } | |
1013 | ||
24462549 FF |
1014 | int dsa_slave_suspend(struct net_device *slave_dev) |
1015 | { | |
1016 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
1017 | ||
24462549 FF |
1018 | if (p->phy) { |
1019 | phy_stop(p->phy); | |
1020 | p->old_pause = -1; | |
1021 | p->old_link = -1; | |
1022 | p->old_duplex = -1; | |
1023 | phy_suspend(p->phy); | |
1024 | } | |
1025 | ||
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | int dsa_slave_resume(struct net_device *slave_dev) | |
1030 | { | |
1031 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
1032 | ||
1033 | netif_device_attach(slave_dev); | |
1034 | ||
1035 | if (p->phy) { | |
1036 | phy_resume(p->phy); | |
1037 | phy_start(p->phy); | |
1038 | } | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
d87d6f44 GR |
1043 | int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
1044 | int port, char *name) | |
91da11f8 | 1045 | { |
e84665c9 | 1046 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
1047 | struct net_device *slave_dev; |
1048 | struct dsa_slave_priv *p; | |
1049 | int ret; | |
1050 | ||
c835a677 TG |
1051 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
1052 | NET_NAME_UNKNOWN, ether_setup); | |
91da11f8 | 1053 | if (slave_dev == NULL) |
d87d6f44 | 1054 | return -ENOMEM; |
91da11f8 LB |
1055 | |
1056 | slave_dev->features = master->vlan_features; | |
7ad24ea4 | 1057 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
2fcc8005 | 1058 | eth_hw_addr_inherit(slave_dev, master); |
0a5f107b | 1059 | slave_dev->priv_flags |= IFF_NO_QUEUE; |
3e8a72d1 | 1060 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
9d47c0a2 | 1061 | slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; |
f37db85d | 1062 | SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); |
d442ad4a | 1063 | |
448b4482 AL |
1064 | netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
1065 | NULL); | |
1066 | ||
5075314e AD |
1067 | SET_NETDEV_DEV(slave_dev, parent); |
1068 | slave_dev->dev.of_node = ds->pd->port_dn[port]; | |
1069 | slave_dev->vlan_features = master->vlan_features; | |
1070 | ||
1071 | p = netdev_priv(slave_dev); | |
1072 | p->dev = slave_dev; | |
1073 | p->parent = ds; | |
1074 | p->port = port; | |
1075 | ||
e84665c9 | 1076 | switch (ds->dst->tag_protocol) { |
cf85d08f | 1077 | #ifdef CONFIG_NET_DSA_TAG_DSA |
ac7a04c3 | 1078 | case DSA_TAG_PROTO_DSA: |
5075314e | 1079 | p->xmit = dsa_netdev_ops.xmit; |
cf85d08f LB |
1080 | break; |
1081 | #endif | |
91da11f8 | 1082 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
ac7a04c3 | 1083 | case DSA_TAG_PROTO_EDSA: |
5075314e | 1084 | p->xmit = edsa_netdev_ops.xmit; |
91da11f8 | 1085 | break; |
396138f0 LB |
1086 | #endif |
1087 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
ac7a04c3 | 1088 | case DSA_TAG_PROTO_TRAILER: |
5075314e | 1089 | p->xmit = trailer_netdev_ops.xmit; |
396138f0 | 1090 | break; |
5037d532 FF |
1091 | #endif |
1092 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
ac7a04c3 | 1093 | case DSA_TAG_PROTO_BRCM: |
5075314e | 1094 | p->xmit = brcm_netdev_ops.xmit; |
5037d532 | 1095 | break; |
91da11f8 LB |
1096 | #endif |
1097 | default: | |
5075314e | 1098 | p->xmit = dsa_slave_notag_xmit; |
5aed85ce | 1099 | break; |
91da11f8 | 1100 | } |
d442ad4a | 1101 | |
0d8bcdd3 FF |
1102 | p->old_pause = -1; |
1103 | p->old_link = -1; | |
1104 | p->old_duplex = -1; | |
1105 | ||
d87d6f44 | 1106 | ds->ports[port] = slave_dev; |
91da11f8 LB |
1107 | ret = register_netdev(slave_dev); |
1108 | if (ret) { | |
a2ae6007 JP |
1109 | netdev_err(master, "error %d registering interface %s\n", |
1110 | ret, slave_dev->name); | |
d87d6f44 | 1111 | ds->ports[port] = NULL; |
91da11f8 | 1112 | free_netdev(slave_dev); |
d87d6f44 | 1113 | return ret; |
91da11f8 LB |
1114 | } |
1115 | ||
1116 | netif_carrier_off(slave_dev); | |
1117 | ||
0071f56e AL |
1118 | ret = dsa_slave_phy_setup(p, slave_dev); |
1119 | if (ret) { | |
1120 | netdev_err(master, "error %d setting up slave phy\n", ret); | |
73dcb556 | 1121 | unregister_netdev(slave_dev); |
0071f56e AL |
1122 | free_netdev(slave_dev); |
1123 | return ret; | |
1124 | } | |
1125 | ||
d87d6f44 | 1126 | return 0; |
91da11f8 | 1127 | } |
b73adef6 | 1128 | |
cda5c15b NA |
1129 | void dsa_slave_destroy(struct net_device *slave_dev) |
1130 | { | |
1131 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
1132 | ||
1133 | netif_carrier_off(slave_dev); | |
1134 | if (p->phy) | |
1135 | phy_disconnect(p->phy); | |
1136 | unregister_netdev(slave_dev); | |
1137 | free_netdev(slave_dev); | |
1138 | } | |
1139 | ||
b73adef6 FF |
1140 | static bool dsa_slave_dev_check(struct net_device *dev) |
1141 | { | |
1142 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
1143 | } | |
1144 | ||
1145 | static int dsa_slave_master_changed(struct net_device *dev) | |
1146 | { | |
1147 | struct net_device *master = netdev_master_upper_dev_get(dev); | |
b06b107a | 1148 | struct dsa_slave_priv *p = netdev_priv(dev); |
b73adef6 FF |
1149 | int err = 0; |
1150 | ||
1151 | if (master && master->rtnl_link_ops && | |
1152 | !strcmp(master->rtnl_link_ops->kind, "bridge")) | |
1153 | err = dsa_slave_bridge_port_join(dev, master); | |
b06b107a | 1154 | else if (dsa_port_is_bridged(p)) |
b73adef6 FF |
1155 | err = dsa_slave_bridge_port_leave(dev); |
1156 | ||
1157 | return err; | |
1158 | } | |
1159 | ||
1160 | int dsa_slave_netdevice_event(struct notifier_block *unused, | |
1161 | unsigned long event, void *ptr) | |
1162 | { | |
1163 | struct net_device *dev; | |
1164 | int err = 0; | |
1165 | ||
1166 | switch (event) { | |
1167 | case NETDEV_CHANGEUPPER: | |
1168 | dev = netdev_notifier_info_to_dev(ptr); | |
1169 | if (!dsa_slave_dev_check(dev)) | |
1170 | goto out; | |
1171 | ||
1172 | err = dsa_slave_master_changed(dev); | |
efd29b3d | 1173 | if (err && err != -EOPNOTSUPP) |
b73adef6 FF |
1174 | netdev_warn(dev, "failed to reflect master change\n"); |
1175 | ||
1176 | break; | |
1177 | } | |
1178 | ||
1179 | out: | |
1180 | return NOTIFY_DONE; | |
1181 | } |