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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> |
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); | |
4ed70ce9 | 424 | struct sk_buff *nskb; |
3e8a72d1 | 425 | |
4ed70ce9 FF |
426 | dev->stats.tx_packets++; |
427 | dev->stats.tx_bytes += skb->len; | |
3e8a72d1 | 428 | |
4ed70ce9 FF |
429 | /* Transmit function may have to reallocate the original SKB */ |
430 | nskb = p->xmit(skb, dev); | |
431 | if (!nskb) | |
432 | return NETDEV_TX_OK; | |
5aed85ce | 433 | |
4ed70ce9 FF |
434 | /* Queue the SKB for transmission on the parent interface, but |
435 | * do not modify its EtherType | |
436 | */ | |
437 | nskb->dev = p->parent->dst->master_netdev; | |
438 | dev_queue_xmit(nskb); | |
5aed85ce FF |
439 | |
440 | return NETDEV_TX_OK; | |
441 | } | |
442 | ||
4ed70ce9 FF |
443 | static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, |
444 | struct net_device *dev) | |
445 | { | |
446 | /* Just return the original SKB */ | |
447 | return skb; | |
448 | } | |
449 | ||
91da11f8 LB |
450 | |
451 | /* ethtool operations *******************************************************/ | |
452 | static int | |
453 | dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
454 | { | |
455 | struct dsa_slave_priv *p = netdev_priv(dev); | |
456 | int err; | |
457 | ||
458 | err = -EOPNOTSUPP; | |
459 | if (p->phy != NULL) { | |
460 | err = phy_read_status(p->phy); | |
461 | if (err == 0) | |
462 | err = phy_ethtool_gset(p->phy, cmd); | |
463 | } | |
464 | ||
465 | return err; | |
466 | } | |
467 | ||
468 | static int | |
469 | dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
470 | { | |
471 | struct dsa_slave_priv *p = netdev_priv(dev); | |
472 | ||
473 | if (p->phy != NULL) | |
474 | return phy_ethtool_sset(p->phy, cmd); | |
475 | ||
476 | return -EOPNOTSUPP; | |
477 | } | |
478 | ||
479 | static void dsa_slave_get_drvinfo(struct net_device *dev, | |
480 | struct ethtool_drvinfo *drvinfo) | |
481 | { | |
7826d43f JP |
482 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
483 | strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); | |
484 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); | |
485 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
486 | } |
487 | ||
3d762a0f GR |
488 | static int dsa_slave_get_regs_len(struct net_device *dev) |
489 | { | |
490 | struct dsa_slave_priv *p = netdev_priv(dev); | |
491 | struct dsa_switch *ds = p->parent; | |
492 | ||
493 | if (ds->drv->get_regs_len) | |
494 | return ds->drv->get_regs_len(ds, p->port); | |
495 | ||
496 | return -EOPNOTSUPP; | |
497 | } | |
498 | ||
499 | static void | |
500 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
501 | { | |
502 | struct dsa_slave_priv *p = netdev_priv(dev); | |
503 | struct dsa_switch *ds = p->parent; | |
504 | ||
505 | if (ds->drv->get_regs) | |
506 | ds->drv->get_regs(ds, p->port, regs, _p); | |
507 | } | |
508 | ||
91da11f8 LB |
509 | static int dsa_slave_nway_reset(struct net_device *dev) |
510 | { | |
511 | struct dsa_slave_priv *p = netdev_priv(dev); | |
512 | ||
513 | if (p->phy != NULL) | |
514 | return genphy_restart_aneg(p->phy); | |
515 | ||
516 | return -EOPNOTSUPP; | |
517 | } | |
518 | ||
519 | static u32 dsa_slave_get_link(struct net_device *dev) | |
520 | { | |
521 | struct dsa_slave_priv *p = netdev_priv(dev); | |
522 | ||
523 | if (p->phy != NULL) { | |
524 | genphy_update_link(p->phy); | |
525 | return p->phy->link; | |
526 | } | |
527 | ||
528 | return -EOPNOTSUPP; | |
529 | } | |
530 | ||
6793abb4 GR |
531 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
532 | { | |
533 | struct dsa_slave_priv *p = netdev_priv(dev); | |
534 | struct dsa_switch *ds = p->parent; | |
535 | ||
536 | if (ds->pd->eeprom_len) | |
537 | return ds->pd->eeprom_len; | |
538 | ||
539 | if (ds->drv->get_eeprom_len) | |
540 | return ds->drv->get_eeprom_len(ds); | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
546 | struct ethtool_eeprom *eeprom, u8 *data) | |
547 | { | |
548 | struct dsa_slave_priv *p = netdev_priv(dev); | |
549 | struct dsa_switch *ds = p->parent; | |
550 | ||
551 | if (ds->drv->get_eeprom) | |
552 | return ds->drv->get_eeprom(ds, eeprom, data); | |
553 | ||
554 | return -EOPNOTSUPP; | |
555 | } | |
556 | ||
557 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
558 | struct ethtool_eeprom *eeprom, u8 *data) | |
559 | { | |
560 | struct dsa_slave_priv *p = netdev_priv(dev); | |
561 | struct dsa_switch *ds = p->parent; | |
562 | ||
563 | if (ds->drv->set_eeprom) | |
564 | return ds->drv->set_eeprom(ds, eeprom, data); | |
565 | ||
566 | return -EOPNOTSUPP; | |
567 | } | |
568 | ||
91da11f8 LB |
569 | static void dsa_slave_get_strings(struct net_device *dev, |
570 | uint32_t stringset, uint8_t *data) | |
571 | { | |
572 | struct dsa_slave_priv *p = netdev_priv(dev); | |
573 | struct dsa_switch *ds = p->parent; | |
574 | ||
575 | if (stringset == ETH_SS_STATS) { | |
576 | int len = ETH_GSTRING_LEN; | |
577 | ||
578 | strncpy(data, "tx_packets", len); | |
579 | strncpy(data + len, "tx_bytes", len); | |
580 | strncpy(data + 2 * len, "rx_packets", len); | |
581 | strncpy(data + 3 * len, "rx_bytes", len); | |
582 | if (ds->drv->get_strings != NULL) | |
583 | ds->drv->get_strings(ds, p->port, data + 4 * len); | |
584 | } | |
585 | } | |
586 | ||
587 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
588 | struct ethtool_stats *stats, | |
589 | uint64_t *data) | |
590 | { | |
591 | struct dsa_slave_priv *p = netdev_priv(dev); | |
592 | struct dsa_switch *ds = p->parent; | |
593 | ||
594 | data[0] = p->dev->stats.tx_packets; | |
595 | data[1] = p->dev->stats.tx_bytes; | |
596 | data[2] = p->dev->stats.rx_packets; | |
597 | data[3] = p->dev->stats.rx_bytes; | |
598 | if (ds->drv->get_ethtool_stats != NULL) | |
599 | ds->drv->get_ethtool_stats(ds, p->port, data + 4); | |
600 | } | |
601 | ||
602 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
603 | { | |
604 | struct dsa_slave_priv *p = netdev_priv(dev); | |
605 | struct dsa_switch *ds = p->parent; | |
606 | ||
607 | if (sset == ETH_SS_STATS) { | |
608 | int count; | |
609 | ||
610 | count = 4; | |
611 | if (ds->drv->get_sset_count != NULL) | |
612 | count += ds->drv->get_sset_count(ds); | |
613 | ||
614 | return count; | |
615 | } | |
616 | ||
617 | return -EOPNOTSUPP; | |
618 | } | |
619 | ||
19e57c4e FF |
620 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
621 | { | |
622 | struct dsa_slave_priv *p = netdev_priv(dev); | |
623 | struct dsa_switch *ds = p->parent; | |
624 | ||
625 | if (ds->drv->get_wol) | |
626 | ds->drv->get_wol(ds, p->port, w); | |
627 | } | |
628 | ||
629 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
630 | { | |
631 | struct dsa_slave_priv *p = netdev_priv(dev); | |
632 | struct dsa_switch *ds = p->parent; | |
633 | int ret = -EOPNOTSUPP; | |
634 | ||
635 | if (ds->drv->set_wol) | |
636 | ret = ds->drv->set_wol(ds, p->port, w); | |
637 | ||
638 | return ret; | |
639 | } | |
640 | ||
7905288f FF |
641 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
642 | { | |
643 | struct dsa_slave_priv *p = netdev_priv(dev); | |
644 | struct dsa_switch *ds = p->parent; | |
645 | int ret; | |
646 | ||
647 | if (!ds->drv->set_eee) | |
648 | return -EOPNOTSUPP; | |
649 | ||
650 | ret = ds->drv->set_eee(ds, p->port, p->phy, e); | |
651 | if (ret) | |
652 | return ret; | |
653 | ||
654 | if (p->phy) | |
655 | ret = phy_ethtool_set_eee(p->phy, e); | |
656 | ||
657 | return ret; | |
658 | } | |
659 | ||
660 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
661 | { | |
662 | struct dsa_slave_priv *p = netdev_priv(dev); | |
663 | struct dsa_switch *ds = p->parent; | |
664 | int ret; | |
665 | ||
666 | if (!ds->drv->get_eee) | |
667 | return -EOPNOTSUPP; | |
668 | ||
669 | ret = ds->drv->get_eee(ds, p->port, e); | |
670 | if (ret) | |
671 | return ret; | |
672 | ||
673 | if (p->phy) | |
674 | ret = phy_ethtool_get_eee(p->phy, e); | |
675 | ||
676 | return ret; | |
677 | } | |
678 | ||
91da11f8 LB |
679 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
680 | .get_settings = dsa_slave_get_settings, | |
681 | .set_settings = dsa_slave_set_settings, | |
682 | .get_drvinfo = dsa_slave_get_drvinfo, | |
3d762a0f GR |
683 | .get_regs_len = dsa_slave_get_regs_len, |
684 | .get_regs = dsa_slave_get_regs, | |
91da11f8 LB |
685 | .nway_reset = dsa_slave_nway_reset, |
686 | .get_link = dsa_slave_get_link, | |
6793abb4 GR |
687 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
688 | .get_eeprom = dsa_slave_get_eeprom, | |
689 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
690 | .get_strings = dsa_slave_get_strings, |
691 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
692 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
693 | .set_wol = dsa_slave_set_wol, |
694 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
695 | .set_eee = dsa_slave_set_eee, |
696 | .get_eee = dsa_slave_get_eee, | |
91da11f8 LB |
697 | }; |
698 | ||
3e8a72d1 | 699 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
700 | .ndo_open = dsa_slave_open, |
701 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 702 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
703 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
704 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 705 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
339d8262 GR |
706 | .ndo_fdb_add = dsa_slave_fdb_add, |
707 | .ndo_fdb_del = dsa_slave_fdb_del, | |
708 | .ndo_fdb_dump = dsa_slave_fdb_dump, | |
d442ad4a | 709 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 710 | .ndo_get_iflink = dsa_slave_get_iflink, |
98237d43 SF |
711 | }; |
712 | ||
9d47c0a2 | 713 | static const struct switchdev_ops dsa_slave_switchdev_ops = { |
f8e20a9f | 714 | .switchdev_port_attr_get = dsa_slave_port_attr_get, |
35636062 | 715 | .switchdev_port_attr_set = dsa_slave_port_attr_set, |
d442ad4a | 716 | }; |
91da11f8 | 717 | |
0d8bcdd3 FF |
718 | static void dsa_slave_adjust_link(struct net_device *dev) |
719 | { | |
720 | struct dsa_slave_priv *p = netdev_priv(dev); | |
ec9436ba | 721 | struct dsa_switch *ds = p->parent; |
0d8bcdd3 FF |
722 | unsigned int status_changed = 0; |
723 | ||
724 | if (p->old_link != p->phy->link) { | |
725 | status_changed = 1; | |
726 | p->old_link = p->phy->link; | |
727 | } | |
728 | ||
729 | if (p->old_duplex != p->phy->duplex) { | |
730 | status_changed = 1; | |
731 | p->old_duplex = p->phy->duplex; | |
732 | } | |
733 | ||
734 | if (p->old_pause != p->phy->pause) { | |
735 | status_changed = 1; | |
736 | p->old_pause = p->phy->pause; | |
737 | } | |
738 | ||
ec9436ba FF |
739 | if (ds->drv->adjust_link && status_changed) |
740 | ds->drv->adjust_link(ds, p->port, p->phy); | |
741 | ||
0d8bcdd3 FF |
742 | if (status_changed) |
743 | phy_print_status(p->phy); | |
744 | } | |
745 | ||
ce31b31c FF |
746 | static int dsa_slave_fixed_link_update(struct net_device *dev, |
747 | struct fixed_phy_status *status) | |
748 | { | |
749 | struct dsa_slave_priv *p = netdev_priv(dev); | |
750 | struct dsa_switch *ds = p->parent; | |
751 | ||
752 | if (ds->drv->fixed_link_update) | |
753 | ds->drv->fixed_link_update(ds, p->port, status); | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
91da11f8 | 758 | /* slave device setup *******************************************************/ |
c305c165 | 759 | static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
cd28a1a9 FF |
760 | struct net_device *slave_dev, |
761 | int addr) | |
c305c165 FF |
762 | { |
763 | struct dsa_switch *ds = p->parent; | |
764 | ||
cd28a1a9 | 765 | p->phy = ds->slave_mii_bus->phy_map[addr]; |
c305c165 FF |
766 | if (!p->phy) |
767 | return -ENODEV; | |
768 | ||
769 | /* Use already configured phy mode */ | |
770 | p->phy_interface = p->phy->interface; | |
771 | phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, | |
772 | p->phy_interface); | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
9697f1cd | 777 | static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
0d8bcdd3 FF |
778 | struct net_device *slave_dev) |
779 | { | |
780 | struct dsa_switch *ds = p->parent; | |
781 | struct dsa_chip_data *cd = ds->pd; | |
782 | struct device_node *phy_dn, *port_dn; | |
ce31b31c | 783 | bool phy_is_fixed = false; |
6819563e | 784 | u32 phy_flags = 0; |
19334920 | 785 | int mode, ret; |
0d8bcdd3 FF |
786 | |
787 | port_dn = cd->port_dn[p->port]; | |
19334920 GR |
788 | mode = of_get_phy_mode(port_dn); |
789 | if (mode < 0) | |
790 | mode = PHY_INTERFACE_MODE_NA; | |
791 | p->phy_interface = mode; | |
0d8bcdd3 FF |
792 | |
793 | phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); | |
794 | if (of_phy_is_fixed_link(port_dn)) { | |
795 | /* In the case of a fixed PHY, the DT node associated | |
796 | * to the fixed PHY is the Port DT node | |
797 | */ | |
798 | ret = of_phy_register_fixed_link(port_dn); | |
799 | if (ret) { | |
a2ae6007 | 800 | netdev_err(slave_dev, "failed to register fixed PHY\n"); |
9697f1cd | 801 | return ret; |
0d8bcdd3 | 802 | } |
ce31b31c | 803 | phy_is_fixed = true; |
0d8bcdd3 FF |
804 | phy_dn = port_dn; |
805 | } | |
806 | ||
6819563e FF |
807 | if (ds->drv->get_phy_flags) |
808 | phy_flags = ds->drv->get_phy_flags(ds, p->port); | |
809 | ||
cd28a1a9 FF |
810 | if (phy_dn) { |
811 | ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn); | |
812 | /* If this PHY address is part of phys_mii_mask, which means | |
813 | * that we need to divert reads and writes to/from it, then we | |
814 | * want to bind this device using the slave MII bus created by | |
815 | * DSA to make that happen. | |
816 | */ | |
96026d05 FF |
817 | if (!phy_is_fixed && ret >= 0 && |
818 | (ds->phys_mii_mask & (1 << ret))) { | |
cd28a1a9 FF |
819 | ret = dsa_slave_phy_connect(p, slave_dev, ret); |
820 | if (ret) | |
821 | return ret; | |
822 | } else { | |
823 | p->phy = of_phy_connect(slave_dev, phy_dn, | |
824 | dsa_slave_adjust_link, | |
825 | phy_flags, | |
826 | p->phy_interface); | |
827 | } | |
828 | } | |
0d8bcdd3 | 829 | |
ce31b31c FF |
830 | if (p->phy && phy_is_fixed) |
831 | fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); | |
832 | ||
0d8bcdd3 FF |
833 | /* We could not connect to a designated PHY, so use the switch internal |
834 | * MDIO bus instead | |
835 | */ | |
b31f65fb | 836 | if (!p->phy) { |
cd28a1a9 | 837 | ret = dsa_slave_phy_connect(p, slave_dev, p->port); |
c305c165 FF |
838 | if (ret) |
839 | return ret; | |
b31f65fb | 840 | } else { |
a2ae6007 JP |
841 | netdev_info(slave_dev, "attached PHY at address %d [%s]\n", |
842 | p->phy->addr, p->phy->drv->name); | |
b31f65fb | 843 | } |
9697f1cd FF |
844 | |
845 | return 0; | |
0d8bcdd3 FF |
846 | } |
847 | ||
448b4482 AL |
848 | static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
849 | static void dsa_slave_set_lockdep_class_one(struct net_device *dev, | |
850 | struct netdev_queue *txq, | |
851 | void *_unused) | |
852 | { | |
853 | lockdep_set_class(&txq->_xmit_lock, | |
854 | &dsa_slave_netdev_xmit_lock_key); | |
855 | } | |
856 | ||
24462549 FF |
857 | int dsa_slave_suspend(struct net_device *slave_dev) |
858 | { | |
859 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
860 | ||
24462549 FF |
861 | if (p->phy) { |
862 | phy_stop(p->phy); | |
863 | p->old_pause = -1; | |
864 | p->old_link = -1; | |
865 | p->old_duplex = -1; | |
866 | phy_suspend(p->phy); | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | int dsa_slave_resume(struct net_device *slave_dev) | |
873 | { | |
874 | struct dsa_slave_priv *p = netdev_priv(slave_dev); | |
875 | ||
876 | netif_device_attach(slave_dev); | |
877 | ||
878 | if (p->phy) { | |
879 | phy_resume(p->phy); | |
880 | phy_start(p->phy); | |
881 | } | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
d87d6f44 GR |
886 | int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
887 | int port, char *name) | |
91da11f8 | 888 | { |
e84665c9 | 889 | struct net_device *master = ds->dst->master_netdev; |
91da11f8 LB |
890 | struct net_device *slave_dev; |
891 | struct dsa_slave_priv *p; | |
892 | int ret; | |
893 | ||
c835a677 TG |
894 | slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
895 | NET_NAME_UNKNOWN, ether_setup); | |
91da11f8 | 896 | if (slave_dev == NULL) |
d87d6f44 | 897 | return -ENOMEM; |
91da11f8 LB |
898 | |
899 | slave_dev->features = master->vlan_features; | |
7ad24ea4 | 900 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
2fcc8005 | 901 | eth_hw_addr_inherit(slave_dev, master); |
91da11f8 | 902 | slave_dev->tx_queue_len = 0; |
3e8a72d1 | 903 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
9d47c0a2 | 904 | slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; |
d442ad4a | 905 | |
448b4482 AL |
906 | netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
907 | NULL); | |
908 | ||
5075314e AD |
909 | SET_NETDEV_DEV(slave_dev, parent); |
910 | slave_dev->dev.of_node = ds->pd->port_dn[port]; | |
911 | slave_dev->vlan_features = master->vlan_features; | |
912 | ||
913 | p = netdev_priv(slave_dev); | |
914 | p->dev = slave_dev; | |
915 | p->parent = ds; | |
916 | p->port = port; | |
917 | ||
e84665c9 | 918 | switch (ds->dst->tag_protocol) { |
cf85d08f | 919 | #ifdef CONFIG_NET_DSA_TAG_DSA |
ac7a04c3 | 920 | case DSA_TAG_PROTO_DSA: |
5075314e | 921 | p->xmit = dsa_netdev_ops.xmit; |
cf85d08f LB |
922 | break; |
923 | #endif | |
91da11f8 | 924 | #ifdef CONFIG_NET_DSA_TAG_EDSA |
ac7a04c3 | 925 | case DSA_TAG_PROTO_EDSA: |
5075314e | 926 | p->xmit = edsa_netdev_ops.xmit; |
91da11f8 | 927 | break; |
396138f0 LB |
928 | #endif |
929 | #ifdef CONFIG_NET_DSA_TAG_TRAILER | |
ac7a04c3 | 930 | case DSA_TAG_PROTO_TRAILER: |
5075314e | 931 | p->xmit = trailer_netdev_ops.xmit; |
396138f0 | 932 | break; |
5037d532 FF |
933 | #endif |
934 | #ifdef CONFIG_NET_DSA_TAG_BRCM | |
ac7a04c3 | 935 | case DSA_TAG_PROTO_BRCM: |
5075314e | 936 | p->xmit = brcm_netdev_ops.xmit; |
5037d532 | 937 | break; |
91da11f8 LB |
938 | #endif |
939 | default: | |
5075314e | 940 | p->xmit = dsa_slave_notag_xmit; |
5aed85ce | 941 | break; |
91da11f8 | 942 | } |
d442ad4a | 943 | |
0d8bcdd3 FF |
944 | p->old_pause = -1; |
945 | p->old_link = -1; | |
946 | p->old_duplex = -1; | |
947 | ||
9697f1cd FF |
948 | ret = dsa_slave_phy_setup(p, slave_dev); |
949 | if (ret) { | |
950 | free_netdev(slave_dev); | |
d87d6f44 | 951 | return ret; |
9697f1cd | 952 | } |
91da11f8 | 953 | |
d87d6f44 | 954 | ds->ports[port] = slave_dev; |
91da11f8 LB |
955 | ret = register_netdev(slave_dev); |
956 | if (ret) { | |
a2ae6007 JP |
957 | netdev_err(master, "error %d registering interface %s\n", |
958 | ret, slave_dev->name); | |
9697f1cd | 959 | phy_disconnect(p->phy); |
d87d6f44 | 960 | ds->ports[port] = NULL; |
91da11f8 | 961 | free_netdev(slave_dev); |
d87d6f44 | 962 | return ret; |
91da11f8 LB |
963 | } |
964 | ||
965 | netif_carrier_off(slave_dev); | |
966 | ||
d87d6f44 | 967 | return 0; |
91da11f8 | 968 | } |
b73adef6 FF |
969 | |
970 | static bool dsa_slave_dev_check(struct net_device *dev) | |
971 | { | |
972 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
973 | } | |
974 | ||
975 | static int dsa_slave_master_changed(struct net_device *dev) | |
976 | { | |
977 | struct net_device *master = netdev_master_upper_dev_get(dev); | |
b06b107a | 978 | struct dsa_slave_priv *p = netdev_priv(dev); |
b73adef6 FF |
979 | int err = 0; |
980 | ||
981 | if (master && master->rtnl_link_ops && | |
982 | !strcmp(master->rtnl_link_ops->kind, "bridge")) | |
983 | err = dsa_slave_bridge_port_join(dev, master); | |
b06b107a | 984 | else if (dsa_port_is_bridged(p)) |
b73adef6 FF |
985 | err = dsa_slave_bridge_port_leave(dev); |
986 | ||
987 | return err; | |
988 | } | |
989 | ||
990 | int dsa_slave_netdevice_event(struct notifier_block *unused, | |
991 | unsigned long event, void *ptr) | |
992 | { | |
993 | struct net_device *dev; | |
994 | int err = 0; | |
995 | ||
996 | switch (event) { | |
997 | case NETDEV_CHANGEUPPER: | |
998 | dev = netdev_notifier_info_to_dev(ptr); | |
999 | if (!dsa_slave_dev_check(dev)) | |
1000 | goto out; | |
1001 | ||
1002 | err = dsa_slave_master_changed(dev); | |
1003 | if (err) | |
1004 | netdev_warn(dev, "failed to reflect master change\n"); | |
1005 | ||
1006 | break; | |
1007 | } | |
1008 | ||
1009 | out: | |
1010 | return NOTIFY_DONE; | |
1011 | } |