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> |
91da11f8 LB |
21 | #include "dsa_priv.h" |
22 | ||
23 | /* slave mii_bus handling ***************************************************/ | |
24 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
25 | { | |
26 | struct dsa_switch *ds = bus->priv; | |
27 | ||
0d8bcdd3 | 28 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
29 | return ds->drv->phy_read(ds, addr, reg); |
30 | ||
31 | return 0xffff; | |
32 | } | |
33 | ||
34 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
35 | { | |
36 | struct dsa_switch *ds = bus->priv; | |
37 | ||
0d8bcdd3 | 38 | if (ds->phys_mii_mask & (1 << addr)) |
91da11f8 LB |
39 | return ds->drv->phy_write(ds, addr, reg, val); |
40 | ||
41 | return 0; | |
42 | } | |
43 | ||
44 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
45 | { | |
46 | ds->slave_mii_bus->priv = (void *)ds; | |
47 | ds->slave_mii_bus->name = "dsa slave smi"; | |
48 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
49 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
f490be04 FF |
50 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x", |
51 | ds->index, ds->pd->sw_addr); | |
b4d2394d | 52 | ds->slave_mii_bus->parent = ds->master_dev; |
24df8986 | 53 | ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
91da11f8 LB |
54 | } |
55 | ||
56 | ||
57 | /* slave device handling ****************************************************/ | |
abd2be00 | 58 | static int dsa_slave_get_iflink(const struct net_device *dev) |
c0840801 LB |
59 | { |
60 | struct dsa_slave_priv *p = netdev_priv(dev); | |
c0840801 | 61 | |
abd2be00 | 62 | return p->parent->dst->master_netdev->ifindex; |
c0840801 LB |
63 | } |
64 | ||
b73adef6 FF |
65 | static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p) |
66 | { | |
67 | return !!p->bridge_dev; | |
68 | } | |
69 | ||
91da11f8 LB |
70 | static int dsa_slave_open(struct net_device *dev) |
71 | { | |
df02c6ff | 72 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 73 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 74 | struct dsa_switch *ds = p->parent; |
b73adef6 FF |
75 | u8 stp_state = dsa_port_is_bridged(p) ? |
76 | BR_STATE_BLOCKING : BR_STATE_FORWARDING; | |
df02c6ff LB |
77 | int err; |
78 | ||
79 | if (!(master->flags & IFF_UP)) | |
80 | return -ENETDOWN; | |
81 | ||
8feedbb4 | 82 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 83 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
84 | if (err < 0) |
85 | goto out; | |
86 | } | |
87 | ||
88 | if (dev->flags & IFF_ALLMULTI) { | |
89 | err = dev_set_allmulti(master, 1); | |
90 | if (err < 0) | |
91 | goto del_unicast; | |
92 | } | |
93 | if (dev->flags & IFF_PROMISC) { | |
94 | err = dev_set_promiscuity(master, 1); | |
95 | if (err < 0) | |
96 | goto clear_allmulti; | |
97 | } | |
98 | ||
b2f2af21 FF |
99 | if (ds->drv->port_enable) { |
100 | err = ds->drv->port_enable(ds, p->port, p->phy); | |
101 | if (err) | |
102 | goto clear_promisc; | |
103 | } | |
104 | ||
b73adef6 FF |
105 | if (ds->drv->port_stp_update) |
106 | ds->drv->port_stp_update(ds, p->port, stp_state); | |
107 | ||
f7f1de51 FF |
108 | if (p->phy) |
109 | phy_start(p->phy); | |
110 | ||
91da11f8 | 111 | return 0; |
df02c6ff | 112 | |
b2f2af21 FF |
113 | clear_promisc: |
114 | if (dev->flags & IFF_PROMISC) | |
4fdeddfe | 115 | dev_set_promiscuity(master, -1); |
df02c6ff LB |
116 | clear_allmulti: |
117 | if (dev->flags & IFF_ALLMULTI) | |
118 | dev_set_allmulti(master, -1); | |
119 | del_unicast: | |
8feedbb4 | 120 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 121 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
122 | out: |
123 | return err; | |
91da11f8 LB |
124 | } |
125 | ||
126 | static int dsa_slave_close(struct net_device *dev) | |
127 | { | |
df02c6ff | 128 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 129 | struct net_device *master = p->parent->dst->master_netdev; |
b2f2af21 | 130 | struct dsa_switch *ds = p->parent; |
df02c6ff | 131 | |
f7f1de51 FF |
132 | if (p->phy) |
133 | phy_stop(p->phy); | |
134 | ||
df02c6ff | 135 | dev_mc_unsync(master, dev); |
a748ee24 | 136 | dev_uc_unsync(master, dev); |
df02c6ff LB |
137 | if (dev->flags & IFF_ALLMULTI) |
138 | dev_set_allmulti(master, -1); | |
139 | if (dev->flags & IFF_PROMISC) | |
140 | dev_set_promiscuity(master, -1); | |
141 | ||
8feedbb4 | 142 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 143 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 144 | |
b2f2af21 FF |
145 | if (ds->drv->port_disable) |
146 | ds->drv->port_disable(ds, p->port, p->phy); | |
147 | ||
b73adef6 FF |
148 | if (ds->drv->port_stp_update) |
149 | ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED); | |
150 | ||
91da11f8 LB |
151 | return 0; |
152 | } | |
153 | ||
154 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
155 | { | |
156 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 157 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
158 | |
159 | if (change & IFF_ALLMULTI) | |
160 | dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); | |
161 | if (change & IFF_PROMISC) | |
162 | dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); | |
163 | } | |
164 | ||
165 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
166 | { | |
167 | struct dsa_slave_priv *p = netdev_priv(dev); | |
e84665c9 | 168 | struct net_device *master = p->parent->dst->master_netdev; |
91da11f8 LB |
169 | |
170 | dev_mc_sync(master, dev); | |
a748ee24 | 171 | dev_uc_sync(master, dev); |
91da11f8 LB |
172 | } |
173 | ||
df02c6ff | 174 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 175 | { |
df02c6ff | 176 | struct dsa_slave_priv *p = netdev_priv(dev); |
e84665c9 | 177 | struct net_device *master = p->parent->dst->master_netdev; |
df02c6ff LB |
178 | struct sockaddr *addr = a; |
179 | int err; | |
180 | ||
181 | if (!is_valid_ether_addr(addr->sa_data)) | |
182 | return -EADDRNOTAVAIL; | |
183 | ||
184 | if (!(dev->flags & IFF_UP)) | |
185 | goto out; | |
186 | ||
8feedbb4 | 187 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 188 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
189 | if (err < 0) |
190 | return err; | |
191 | } | |
192 | ||
8feedbb4 | 193 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 194 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
195 | |
196 | out: | |
d08f161a | 197 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
91da11f8 LB |
198 | |
199 | return 0; | |
200 | } | |
201 | ||
339d8262 GR |
202 | static int dsa_slave_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
203 | struct net_device *dev, | |
204 | const unsigned char *addr, u16 vid, u16 nlm_flags) | |
205 | { | |
206 | struct dsa_slave_priv *p = netdev_priv(dev); | |
207 | struct dsa_switch *ds = p->parent; | |
208 | int ret = -EOPNOTSUPP; | |
209 | ||
210 | if (ds->drv->fdb_add) | |
211 | ret = ds->drv->fdb_add(ds, p->port, addr, vid); | |
212 | ||
213 | return ret; | |
214 | } | |
215 | ||
216 | static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
217 | struct net_device *dev, | |
218 | const unsigned char *addr, u16 vid) | |
219 | { | |
220 | struct dsa_slave_priv *p = netdev_priv(dev); | |
221 | struct dsa_switch *ds = p->parent; | |
222 | int ret = -EOPNOTSUPP; | |
223 | ||
224 | if (ds->drv->fdb_del) | |
225 | ret = ds->drv->fdb_del(ds, p->port, addr, vid); | |
226 | ||
227 | return ret; | |
228 | } | |
229 | ||
230 | static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb, | |
231 | const unsigned char *addr, u16 vid, | |
232 | bool is_static, | |
233 | u32 portid, u32 seq, int type, | |
234 | unsigned int flags) | |
235 | { | |
236 | struct nlmsghdr *nlh; | |
237 | struct ndmsg *ndm; | |
238 | ||
239 | nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags); | |
240 | if (!nlh) | |
241 | return -EMSGSIZE; | |
242 | ||
243 | ndm = nlmsg_data(nlh); | |
244 | ndm->ndm_family = AF_BRIDGE; | |
245 | ndm->ndm_pad1 = 0; | |
246 | ndm->ndm_pad2 = 0; | |
247 | ndm->ndm_flags = NTF_EXT_LEARNED; | |
248 | ndm->ndm_type = 0; | |
249 | ndm->ndm_ifindex = dev->ifindex; | |
250 | ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; | |
251 | ||
252 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
253 | goto nla_put_failure; | |
254 | ||
255 | if (vid && nla_put_u16(skb, NDA_VLAN, vid)) | |
256 | goto nla_put_failure; | |
257 | ||
258 | nlmsg_end(skb, nlh); | |
259 | return 0; | |
260 | ||
261 | nla_put_failure: | |
262 | nlmsg_cancel(skb, nlh); | |
263 | return -EMSGSIZE; | |
264 | } | |
265 | ||
266 | /* Dump information about entries, in response to GETNEIGH */ | |
267 | static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
268 | struct net_device *dev, | |
269 | struct net_device *filter_dev, int idx) | |
270 | { | |
271 | struct dsa_slave_priv *p = netdev_priv(dev); | |
272 | struct dsa_switch *ds = p->parent; | |
273 | unsigned char addr[ETH_ALEN] = { 0 }; | |
274 | int ret; | |
275 | ||
276 | if (!ds->drv->fdb_getnext) | |
277 | return -EOPNOTSUPP; | |
278 | ||
279 | for (; ; idx++) { | |
280 | bool is_static; | |
281 | ||
282 | ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static); | |
283 | if (ret < 0) | |
284 | break; | |
285 | ||
286 | if (idx < cb->args[0]) | |
287 | continue; | |
288 | ||
289 | ret = dsa_slave_fill_info(dev, skb, addr, 0, | |
290 | is_static, | |
291 | NETLINK_CB(cb->skb).portid, | |
292 | cb->nlh->nlmsg_seq, | |
293 | RTM_NEWNEIGH, NLM_F_MULTI); | |
294 | if (ret < 0) | |
295 | break; | |
296 | } | |
297 | ||
298 | return idx; | |
299 | } | |
300 | ||
91da11f8 LB |
301 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
302 | { | |
303 | struct dsa_slave_priv *p = netdev_priv(dev); | |
91da11f8 LB |
304 | |
305 | if (p->phy != NULL) | |
28b04113 | 306 | return phy_mii_ioctl(p->phy, ifr, cmd); |
91da11f8 LB |
307 | |
308 | return -EOPNOTSUPP; | |
309 | } | |
310 | ||
b73adef6 FF |
311 | /* Return a bitmask of all ports being currently bridged within a given bridge |
312 | * device. Note that on leave, the mask will still return the bitmask of ports | |
313 | * currently bridged, prior to port removal, and this is exactly what we want. | |
314 | */ | |
315 | static u32 dsa_slave_br_port_mask(struct dsa_switch *ds, | |
316 | struct net_device *bridge) | |
317 | { | |
318 | struct dsa_slave_priv *p; | |
319 | unsigned int port; | |
320 | u32 mask = 0; | |
321 | ||
322 | for (port = 0; port < DSA_MAX_PORTS; port++) { | |
d79d2107 | 323 | if (!dsa_is_port_initialized(ds, port)) |
b73adef6 FF |
324 | continue; |
325 | ||
326 | p = netdev_priv(ds->ports[port]); | |
327 | ||
328 | if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT && | |
329 | p->bridge_dev == bridge) | |
330 | mask |= 1 << port; | |
331 | } | |
332 | ||
333 | return mask; | |
334 | } | |
335 | ||
336 | static int dsa_slave_stp_update(struct net_device *dev, u8 state) | |
337 | { | |
338 | struct dsa_slave_priv *p = netdev_priv(dev); | |
339 | struct dsa_switch *ds = p->parent; | |
340 | int ret = -EOPNOTSUPP; | |
341 | ||
342 | if (ds->drv->port_stp_update) | |
343 | ret = ds->drv->port_stp_update(ds, p->port, state); | |
344 | ||
345 | return ret; | |
346 | } | |
347 | ||
35636062 SF |
348 | static int dsa_slave_port_attr_set(struct net_device *dev, |
349 | struct switchdev_attr *attr) | |
350 | { | |
351 | int ret = 0; | |
352 | ||
353 | switch (attr->id) { | |
354 | case SWITCHDEV_ATTR_PORT_STP_STATE: | |
355 | if (attr->trans == SWITCHDEV_TRANS_COMMIT) | |
42275bd8 | 356 | ret = dsa_slave_stp_update(dev, attr->u.stp_state); |
35636062 SF |
357 | break; |
358 | default: | |
359 | ret = -EOPNOTSUPP; | |
360 | break; | |
361 | } | |
362 | ||
363 | return ret; | |
364 | } | |
365 | ||
b73adef6 FF |
366 | static int dsa_slave_bridge_port_join(struct net_device *dev, |
367 | struct net_device *br) | |
368 | { | |
369 | struct dsa_slave_priv *p = netdev_priv(dev); | |
370 | struct dsa_switch *ds = p->parent; | |
371 | int ret = -EOPNOTSUPP; | |
372 | ||
373 | p->bridge_dev = br; | |
374 | ||
375 | if (ds->drv->port_join_bridge) | |
376 | ret = ds->drv->port_join_bridge(ds, p->port, | |
377 | dsa_slave_br_port_mask(ds, br)); | |
378 | ||
379 | return ret; | |
380 | } | |
381 | ||
382 | static int dsa_slave_bridge_port_leave(struct net_device *dev) | |
383 | { | |
384 | struct dsa_slave_priv *p = netdev_priv(dev); | |
385 | struct dsa_switch *ds = p->parent; | |
386 | int ret = -EOPNOTSUPP; | |
387 | ||
388 | ||
389 | if (ds->drv->port_leave_bridge) | |
390 | ret = ds->drv->port_leave_bridge(ds, p->port, | |
391 | dsa_slave_br_port_mask(ds, p->bridge_dev)); | |
392 | ||
393 | p->bridge_dev = NULL; | |
394 | ||
395 | /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, | |
396 | * so allow it to be in BR_STATE_FORWARDING to be kept functional | |
397 | */ | |
398 | dsa_slave_stp_update(dev, BR_STATE_FORWARDING); | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
f8e20a9f SF |
403 | static int dsa_slave_port_attr_get(struct net_device *dev, |
404 | struct switchdev_attr *attr) | |
b73adef6 FF |
405 | { |
406 | struct dsa_slave_priv *p = netdev_priv(dev); | |
407 | struct dsa_switch *ds = p->parent; | |
408 | ||
f8e20a9f SF |
409 | switch (attr->id) { |
410 | case SWITCHDEV_ATTR_PORT_PARENT_ID: | |
42275bd8 SF |
411 | attr->u.ppid.id_len = sizeof(ds->index); |
412 | memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len); | |
f8e20a9f SF |
413 | break; |
414 | default: | |
415 | return -EOPNOTSUPP; | |
416 | } | |
b73adef6 FF |
417 | |
418 | return 0; | |
419 | } | |
420 | ||
3e8a72d1 FF |
421 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
422 | { | |
423 | struct dsa_slave_priv *p = netdev_priv(dev); | |
3e8a72d1 | 424 | |
5075314e | 425 | return p->xmit(skb, dev); |
3e8a72d1 FF |
426 | } |
427 | ||
5aed85ce FF |
428 | static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb, |
429 | struct net_device *dev) | |
430 | { | |
431 | struct dsa_slave_priv *p = netdev_priv(dev); | |
432 | ||
433 | skb->dev = p->parent->dst->master_netdev; | |
434 | dev_queue_xmit(skb); | |
435 | ||
436 | return NETDEV_TX_OK; | |
437 | } | |
438 | ||
91da11f8 LB |
439 | |
440 | /* ethtool operations *******************************************************/ | |
441 | static int | |
442 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
443 | { | |
444 | struct dsa_slave_priv *p = netdev_priv(dev); | |
445 | int err; | |
446 | ||
447 | err = -EOPNOTSUPP; | |
448 | if (p->phy != NULL) { | |
449 | err = phy_read_status(p->phy); | |
450 | if (err == 0) | |
451 | err = phy_ethtool_gset(p->phy, cmd); | |
452 | } | |
453 | ||
454 | return err; | |
455 | } | |
456 | ||
457 | static int | |
458 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
459 | { | |
460 | struct dsa_slave_priv *p = netdev_priv(dev); | |
461 | ||
462 | if (p->phy != NULL) | |
463 | return phy_ethtool_sset(p->phy, cmd); | |
464 | ||
465 | return -EOPNOTSUPP; | |
466 | } | |
467 | ||
468 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
469 | struct ethtool_drvinfo *drvinfo) | |
470 | { | |
7826d43f JP |
471 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
472 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
473 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
474 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
475 | } |
476 | ||
3d762a0f GR |
477 | static int dsa_slave_get_regs_len(struct net_device *dev) |
478 | { | |
479 | struct dsa_slave_priv *p = netdev_priv(dev); | |
480 | struct dsa_switch *ds = p->parent; | |
481 | ||
482 | if (ds->drv->get_regs_len) | |
483 | return ds->drv->get_regs_len(ds, p->port); | |
484 | ||
485 | return -EOPNOTSUPP; | |
486 | } | |
487 | ||
488 | static void | |
489 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
490 | { | |
491 | struct dsa_slave_priv *p = netdev_priv(dev); | |
492 | struct dsa_switch *ds = p->parent; | |
493 | ||
494 | if (ds->drv->get_regs) | |
495 | ds->drv->get_regs(ds, p->port, regs, _p); | |
496 | } | |
497 | ||
91da11f8 LB |
498 | static int dsa_slave_nway_reset(struct net_device *dev) |
499 | { | |
500 | struct dsa_slave_priv *p = netdev_priv(dev); | |
501 | ||
502 | if (p->phy != NULL) | |
503 | return genphy_restart_aneg(p->phy); | |
504 | ||
505 | return -EOPNOTSUPP; | |
506 | } | |
507 | ||
508 | static u32 dsa_slave_get_link(struct net_device *dev) | |
509 | { | |
510 | struct dsa_slave_priv *p = netdev_priv(dev); | |
511 | ||
512 | if (p->phy != NULL) { | |
513 | genphy_update_link(p->phy); | |
514 | return p->phy->link; | |
515 | } | |
516 | ||
517 | return -EOPNOTSUPP; | |
518 | } | |
519 | ||
6793abb4 GR |
520 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
521 | { | |
522 | struct dsa_slave_priv *p = netdev_priv(dev); | |
523 | struct dsa_switch *ds = p->parent; | |
524 | ||
525 | if (ds->pd->eeprom_len) | |
526 | return ds->pd->eeprom_len; | |
527 | ||
528 | if (ds->drv->get_eeprom_len) | |
529 | return ds->drv->get_eeprom_len(ds); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
535 | struct ethtool_eeprom *eeprom, u8 *data) | |
536 | { | |
537 | struct dsa_slave_priv *p = netdev_priv(dev); | |
538 | struct dsa_switch *ds = p->parent; | |
539 | ||
540 | if (ds->drv->get_eeprom) | |
541 | return ds->drv->get_eeprom(ds, eeprom, data); | |
542 | ||
543 | return -EOPNOTSUPP; | |
544 | } | |
545 | ||
546 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
547 | struct ethtool_eeprom *eeprom, u8 *data) | |
548 | { | |
549 | struct dsa_slave_priv *p = netdev_priv(dev); | |
550 | struct dsa_switch *ds = p->parent; | |
551 | ||
552 | if (ds->drv->set_eeprom) | |
553 | return ds->drv->set_eeprom(ds, eeprom, data); | |
554 | ||
555 | return -EOPNOTSUPP; | |
556 | } | |
557 | ||
91da11f8 LB |
558 | static void dsa_slave_get_strings(struct net_device *dev, |
559 | uint32_t stringset, uint8_t *data) | |
560 | { | |
561 | struct dsa_slave_priv *p = netdev_priv(dev); | |
562 | struct dsa_switch *ds = p->parent; | |
563 | ||
564 | if (stringset == ETH_SS_STATS) { | |
565 | int len = ETH_GSTRING_LEN; | |
566 | ||
567 | strncpy(data, "tx_packets", len); | |
568 | strncpy(data + len, "tx_bytes", len); | |
569 | strncpy(data + 2 * len, "rx_packets", len); | |
570 | strncpy(data + 3 * len, "rx_bytes", len); | |
571 | if (ds->drv->get_strings != NULL) | |
572 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
573 | } | |
574 | } | |
575 | ||
576 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
577 | struct ethtool_stats *stats, | |
578 | uint64_t *data) | |
579 | { | |
580 | struct dsa_slave_priv *p = netdev_priv(dev); | |
581 | struct dsa_switch *ds = p->parent; | |
582 | ||
583 | data[0] = p->dev->stats.tx_packets; | |
584 | data[1] = p->dev->stats.tx_bytes; | |
585 | data[2] = p->dev->stats.rx_packets; | |
586 | data[3] = p->dev->stats.rx_bytes; | |
587 | if (ds->drv->get_ethtool_stats != NULL) | |
588 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
589 | } | |
590 | ||
591 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
592 | { | |
593 | struct dsa_slave_priv *p = netdev_priv(dev); | |
594 | struct dsa_switch *ds = p->parent; | |
595 | ||
596 | if (sset == ETH_SS_STATS) { | |
597 | int count; | |
598 | ||
599 | count = 4; | |
600 | if (ds->drv->get_sset_count != NULL) | |
601 | count += ds->drv->get_sset_count(ds); | |
602 | ||
603 | return count; | |
604 | } | |
605 | ||
606 | return -EOPNOTSUPP; | |
607 | } | |
608 | ||
19e57c4e FF |
609 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
610 | { | |
611 | struct dsa_slave_priv *p = netdev_priv(dev); | |
612 | struct dsa_switch *ds = p->parent; | |
613 | ||
614 | if (ds->drv->get_wol) | |
615 | ds->drv->get_wol(ds, p->port, w); | |
616 | } | |
617 | ||
618 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
619 | { | |
620 | struct dsa_slave_priv *p = netdev_priv(dev); | |
621 | struct dsa_switch *ds = p->parent; | |
622 | int ret = -EOPNOTSUPP; | |
623 | ||
624 | if (ds->drv->set_wol) | |
625 | ret = ds->drv->set_wol(ds, p->port, w); | |
626 | ||
627 | return ret; | |
628 | } | |
629 | ||
7905288f FF |
630 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
631 | { | |
632 | struct dsa_slave_priv *p = netdev_priv(dev); | |
633 | struct dsa_switch *ds = p->parent; | |
634 | int ret; | |
635 | ||
636 | if (!ds->drv->set_eee) | |
637 | return -EOPNOTSUPP; | |
638 | ||
639 | ret = ds->drv->set_eee(ds, p->port, p->phy, e); | |
640 | if (ret) | |
641 | return ret; | |
642 | ||
643 | if (p->phy) | |
644 | ret = phy_ethtool_set_eee(p->phy, e); | |
645 | ||
646 | return ret; | |
647 | } | |
648 | ||
649 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
650 | { | |
651 | struct dsa_slave_priv *p = netdev_priv(dev); | |
652 | struct dsa_switch *ds = p->parent; | |
653 | int ret; | |
654 | ||
655 | if (!ds->drv->get_eee) | |
656 | return -EOPNOTSUPP; | |
657 | ||
658 | ret = ds->drv->get_eee(ds, p->port, e); | |
659 | if (ret) | |
660 | return ret; | |
661 | ||
662 | if (p->phy) | |
663 | ret = phy_ethtool_get_eee(p->phy, e); | |
664 | ||
665 | return ret; | |
666 | } | |
667 | ||
91da11f8 LB |
668 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
669 | .get_settings = dsa_slave_get_settings, | |
670 | .set_settings = dsa_slave_set_settings, | |
671 | .get_drvinfo = dsa_slave_get_drvinfo, | |
3d762a0f GR |
672 | .get_regs_len = dsa_slave_get_regs_len, |
673 | .get_regs = dsa_slave_get_regs, | |
91da11f8 LB |
674 | .nway_reset = dsa_slave_nway_reset, |
675 | .get_link = dsa_slave_get_link, | |
6793abb4 GR |
676 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
677 | .get_eeprom = dsa_slave_get_eeprom, | |
678 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
679 | .get_strings = dsa_slave_get_strings, |
680 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
681 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
682 | .set_wol = dsa_slave_set_wol, |
683 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
684 | .set_eee = dsa_slave_set_eee, |
685 | .get_eee = dsa_slave_get_eee, | |
91da11f8 LB |
686 | }; |
687 | ||
3e8a72d1 | 688 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
689 | .ndo_open = dsa_slave_open, |
690 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 691 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
692 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
693 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 694 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
339d8262 GR |
695 | .ndo_fdb_add = dsa_slave_fdb_add, |
696 | .ndo_fdb_del = dsa_slave_fdb_del, | |
697 | .ndo_fdb_dump = dsa_slave_fdb_dump, | |
d442ad4a | 698 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 699 | .ndo_get_iflink = dsa_slave_get_iflink, |
98237d43 SF |
700 | }; |
701 | ||
9d47c0a2 | 702 | static const struct switchdev_ops dsa_slave_switchdev_ops = { |
f8e20a9f | 703 | .switchdev_port_attr_get = dsa_slave_port_attr_get, |
35636062 | 704 | .switchdev_port_attr_set = dsa_slave_port_attr_set, |
d442ad4a | 705 | }; |
91da11f8 | 706 | |
0d8bcdd3 FF |
707 | static void dsa_slave_adjust_link(struct net_device *dev) |
708 | { | |
709 | struct dsa_slave_priv *p = netdev_priv(dev); | |
ec9436ba | 710 | struct dsa_switch *ds = p->parent; |
0d8bcdd3 FF |
711 | unsigned int status_changed = 0; |
712 | ||
713 | if (p->old_link != p->phy->link) { | |
714 | status_changed = 1; | |
715 | p->old_link = p->phy->link; | |
716 | } | |
717 | ||
718 | if (p->old_duplex != p->phy->duplex) { | |
719 | status_changed = 1; | |
720 | p->old_duplex = p->phy->duplex; | |
721 | } | |
722 | ||
723 | if (p->old_pause != p->phy->pause) { | |
724 | status_changed = 1; | |
725 | p->old_pause = p->phy->pause; | |
726 | } | |
727 | ||
ec9436ba FF |
728 | if (ds->drv->adjust_link && status_changed) |
729 | ds->drv->adjust_link(ds, p->port, p->phy); | |
730 | ||
0d8bcdd3 FF |
731 | if (status_changed) |
732 | phy_print_status(p->phy); | |
733 | } | |
734 | ||
ce31b31c FF |
735 | static int dsa_slave_fixed_link_update(struct net_device *dev, |
736 | struct fixed_phy_status *status) | |
737 | { | |
738 | struct dsa_slave_priv *p = netdev_priv(dev); | |
739 | struct dsa_switch *ds = p->parent; | |
740 | ||
741 | if (ds->drv->fixed_link_update) | |
742 | ds->drv->fixed_link_update(ds, p->port, status); | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
91da11f8 | 747 | /* slave device setup *******************************************************/ |
c305c165 | 748 | static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
cd28a1a9 FF |
749 | struct net_device *slave_dev, |
750 | int addr) | |
c305c165 FF |
751 | { |
752 | struct dsa_switch *ds = p->parent; | |
753 | ||
cd28a1a9 | 754 | p->phy = ds->slave_mii_bus->phy_map[addr]; |
c305c165 FF |
755 | if (!p->phy) |
756 | return -ENODEV; | |
757 | ||
758 | /* Use already configured phy mode */ | |
759 | p->phy_interface = p->phy->interface; | |
760 | phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, | |
761 | p->phy_interface); | |
762 | ||
763 | return 0; | |
764 | } | |
765 | ||
9697f1cd | 766 | static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
0d8bcdd3 FF |
767 | struct net_device *slave_dev) |
768 | { | |
769 | struct dsa_switch *ds = p->parent; | |
770 | struct dsa_chip_data *cd = ds->pd; | |
771 | struct device_node *phy_dn, *port_dn; | |
ce31b31c | 772 | bool phy_is_fixed = false; |
6819563e | 773 | u32 phy_flags = 0; |
19334920 | 774 | int mode, ret; |
0d8bcdd3 FF |
775 | |
776 | port_dn = cd->port_dn[p->port]; | |
19334920 GR |
777 | mode = of_get_phy_mode(port_dn); |
778 | if (mode < 0) | |
779 | mode = PHY_INTERFACE_MODE_NA; | |
780 | p->phy_interface = mode; | |
0d8bcdd3 FF |
781 | |
782 | phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); | |
783 | if (of_phy_is_fixed_link(port_dn)) { | |
784 | /* In the case of a fixed PHY, the DT node associated | |
785 | * to the fixed PHY is the Port DT node | |
786 | */ | |
787 | ret = of_phy_register_fixed_link(port_dn); | |
788 | if (ret) { | |
a2ae6007 | 789 | netdev_err(slave_dev, "failed to register fixed PHY\n"); |
9697f1cd | 790 | return ret; |
0d8bcdd3 | 791 | } |
ce31b31c | 792 | phy_is_fixed = true; |
0d8bcdd3 FF |
793 | phy_dn = port_dn; |
794 | } | |
795 | ||
6819563e FF |
796 | if (ds->drv->get_phy_flags) |
797 | phy_flags = ds->drv->get_phy_flags(ds, p->port); | |
798 | ||
cd28a1a9 FF |
799 | if (phy_dn) { |
800 | ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn); | |
801 | /* If this PHY address is part of phys_mii_mask, which means | |
802 | * that we need to divert reads and writes to/from it, then we | |
803 | * want to bind this device using the slave MII bus created by | |
804 | * DSA to make that happen. | |
805 | */ | |
96026d05 FF |
806 | if (!phy_is_fixed && ret >= 0 && |
807 | (ds->phys_mii_mask & (1 << ret))) { | |
cd28a1a9 FF |
808 | ret = dsa_slave_phy_connect(p, slave_dev, ret); |
809 | if (ret) | |
810 | return ret; | |
811 | } else { | |
812 | p->phy = of_phy_connect(slave_dev, phy_dn, | |
813 | dsa_slave_adjust_link, | |
814 | phy_flags, | |
815 | p->phy_interface); | |
816 | } | |
817 | } | |
0d8bcdd3 | 818 | |
ce31b31c FF |
819 | if (p->phy && phy_is_fixed) |
820 | fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); | |
821 | ||
0d8bcdd3 FF |
822 | /* We could not connect to a designated PHY, so use the switch internal |
823 | * MDIO bus instead | |
824 | */ | |
b31f65fb | 825 | if (!p->phy) { |
cd28a1a9 | 826 | ret = dsa_slave_phy_connect(p, slave_dev, p->port); |
c305c165 FF |
827 | if (ret) |
828 | return ret; | |
b31f65fb | 829 | } else { |
a2ae6007 JP |
830 | netdev_info(slave_dev, "attached PHY at address %d [%s]\n", |
831 | p->phy->addr, p->phy->drv->name); | |
b31f65fb | 832 | } |
9697f1cd FF |
833 | |
834 | return 0; | |
0d8bcdd3 FF |
835 | } |
836 | ||
448b4482 AL |
837 | static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
838 | static void dsa_slave_set_lockdep_class_one(struct net_device *dev, | |
839 | struct netdev_queue *txq, | |
840 | void *_unused) | |
841 | { | |
842 | lockdep_set_class(&txq->_xmit_lock, | |
843 | &dsa_slave_netdev_xmit_lock_key); | |
844 | } | |
845 | ||
24462549 FF |
846 | int dsa_slave_suspend(struct net_device *slave_dev) |
847 | { | |
848 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
849 | ||
24462549 FF |
850 | if (p->phy) { |
851 | phy_stop(p->phy); | |
852 | p->old_pause = -1; | |
853 | p->old_link = -1; | |
854 | p->old_duplex = -1; | |
855 | phy_suspend(p->phy); | |
856 | } | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | int dsa_slave_resume(struct net_device *slave_dev) | |
862 | { | |
863 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
864 | ||
865 | netif_device_attach(slave_dev); | |
866 | ||
867 | if (p->phy) { | |
868 | phy_resume(p->phy); | |
869 | phy_start(p->phy); | |
870 | } | |
871 | ||
872 | return 0; | |
873 | } | |
874 | ||
d87d6f44 GR |
875 | int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
876 | int port, char *name) | |
91da11f8 | 877 | { |
e84665c9 | 878 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
879 | struct net_device *slave_dev; |
880 | struct dsa_slave_priv *p; | |
881 | int ret; | |
882 | ||
c835a677 TG |
883 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
884 | NET_NAME_UNKNOWN, ether_setup); | |
91da11f8 | 885 | if (slave_dev == NULL) |
d87d6f44 | 886 | return -ENOMEM; |
91da11f8 LB |
887 | |
888 | slave_dev->features = master->vlan_features; | |
7ad24ea4 | 889 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
2fcc8005 | 890 | eth_hw_addr_inherit(slave_dev, master); |
91da11f8 | 891 | slave_dev->tx_queue_len = 0; |
3e8a72d1 | 892 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
9d47c0a2 | 893 | slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; |
d442ad4a | 894 | |
448b4482 AL |
895 | netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
896 | NULL); | |
897 | ||
5075314e AD |
898 | SET_NETDEV_DEV(slave_dev, parent); |
899 | slave_dev->dev.of_node = ds->pd->port_dn[port]; | |
900 | slave_dev->vlan_features = master->vlan_features; | |
901 | ||
902 | p = netdev_priv(slave_dev); | |
903 | p->dev = slave_dev; | |
904 | p->parent = ds; | |
905 | p->port = port; | |
906 | ||
e84665c9 | 907 | switch (ds->dst->tag_protocol) { |
cf85d08f | 908 | #ifdef CONFIG_NET_DSA_TAG_DSA |
ac7a04c3 | 909 | case DSA_TAG_PROTO_DSA: |
5075314e | 910 | p->xmit = dsa_netdev_ops.xmit; |
cf85d08f LB |
911 | break; |
912 | #endif | |
91da11f8 | 913 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
ac7a04c3 | 914 | case DSA_TAG_PROTO_EDSA: |
5075314e | 915 | p->xmit = edsa_netdev_ops.xmit; |
91da11f8 | 916 | break; |
396138f0 LB |
917 | #endif |
918 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
ac7a04c3 | 919 | case DSA_TAG_PROTO_TRAILER: |
5075314e | 920 | p->xmit = trailer_netdev_ops.xmit; |
396138f0 | 921 | break; |
5037d532 FF |
922 | #endif |
923 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
ac7a04c3 | 924 | case DSA_TAG_PROTO_BRCM: |
5075314e | 925 | p->xmit = brcm_netdev_ops.xmit; |
5037d532 | 926 | break; |
91da11f8 LB |
927 | #endif |
928 | default: | |
5075314e | 929 | p->xmit = dsa_slave_notag_xmit; |
5aed85ce | 930 | break; |
91da11f8 | 931 | } |
d442ad4a | 932 | |
0d8bcdd3 FF |
933 | p->old_pause = -1; |
934 | p->old_link = -1; | |
935 | p->old_duplex = -1; | |
936 | ||
9697f1cd FF |
937 | ret = dsa_slave_phy_setup(p, slave_dev); |
938 | if (ret) { | |
939 | free_netdev(slave_dev); | |
d87d6f44 | 940 | return ret; |
9697f1cd | 941 | } |
91da11f8 | 942 | |
d87d6f44 | 943 | ds->ports[port] = slave_dev; |
91da11f8 LB |
944 | ret = register_netdev(slave_dev); |
945 | if (ret) { | |
a2ae6007 JP |
946 | netdev_err(master, "error %d registering interface %s\n", |
947 | ret, slave_dev->name); | |
9697f1cd | 948 | phy_disconnect(p->phy); |
d87d6f44 | 949 | ds->ports[port] = NULL; |
91da11f8 | 950 | free_netdev(slave_dev); |
d87d6f44 | 951 | return ret; |
91da11f8 LB |
952 | } |
953 | ||
954 | netif_carrier_off(slave_dev); | |
955 | ||
d87d6f44 | 956 | return 0; |
91da11f8 | 957 | } |
b73adef6 FF |
958 | |
959 | static bool dsa_slave_dev_check(struct net_device *dev) | |
960 | { | |
961 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
962 | } | |
963 | ||
964 | static int dsa_slave_master_changed(struct net_device *dev) | |
965 | { | |
966 | struct net_device *master = netdev_master_upper_dev_get(dev); | |
b06b107a | 967 | struct dsa_slave_priv *p = netdev_priv(dev); |
b73adef6 FF |
968 | int err = 0; |
969 | ||
970 | if (master && master->rtnl_link_ops && | |
971 | !strcmp(master->rtnl_link_ops->kind, "bridge")) | |
972 | err = dsa_slave_bridge_port_join(dev, master); | |
b06b107a | 973 | else if (dsa_port_is_bridged(p)) |
b73adef6 FF |
974 | err = dsa_slave_bridge_port_leave(dev); |
975 | ||
976 | return err; | |
977 | } | |
978 | ||
979 | int dsa_slave_netdevice_event(struct notifier_block *unused, | |
980 | unsigned long event, void *ptr) | |
981 | { | |
982 | struct net_device *dev; | |
983 | int err = 0; | |
984 | ||
985 | switch (event) { | |
986 | case NETDEV_CHANGEUPPER: | |
987 | dev = netdev_notifier_info_to_dev(ptr); | |
988 | if (!dsa_slave_dev_check(dev)) | |
989 | goto out; | |
990 | ||
991 | err = dsa_slave_master_changed(dev); | |
992 | if (err) | |
993 | netdev_warn(dev, "failed to reflect master change\n"); | |
994 | ||
995 | break; | |
996 | } | |
997 | ||
998 | out: | |
999 | return NOTIFY_DONE; | |
1000 | } |