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Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
91da11f8 LB |
2 | /* |
3 | * net/dsa/slave.c - Slave device handling | |
e84665c9 | 4 | * Copyright (c) 2008-2009 Marvell Semiconductor |
91da11f8 LB |
5 | */ |
6 | ||
7 | #include <linux/list.h> | |
df02c6ff | 8 | #include <linux/etherdevice.h> |
b73adef6 | 9 | #include <linux/netdevice.h> |
91da11f8 | 10 | #include <linux/phy.h> |
a2820543 | 11 | #include <linux/phy_fixed.h> |
aab9c406 | 12 | #include <linux/phylink.h> |
0d8bcdd3 FF |
13 | #include <linux/of_net.h> |
14 | #include <linux/of_mdio.h> | |
7f854420 | 15 | #include <linux/mdio.h> |
b73adef6 | 16 | #include <net/rtnetlink.h> |
f50f2127 FF |
17 | #include <net/pkt_cls.h> |
18 | #include <net/tc_act/tc_mirred.h> | |
b73adef6 | 19 | #include <linux/if_bridge.h> |
04ff53f9 | 20 | #include <linux/netpoll.h> |
90af1059 | 21 | #include <linux/ptp_classify.h> |
ea5dd34b | 22 | |
91da11f8 LB |
23 | #include "dsa_priv.h" |
24 | ||
f3b78049 | 25 | static bool dsa_slave_dev_check(const struct net_device *dev); |
f50f2127 | 26 | |
91da11f8 LB |
27 | /* slave mii_bus handling ***************************************************/ |
28 | static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) | |
29 | { | |
30 | struct dsa_switch *ds = bus->priv; | |
31 | ||
0d8bcdd3 | 32 | if (ds->phys_mii_mask & (1 << addr)) |
9d490b4e | 33 | return ds->ops->phy_read(ds, addr, reg); |
91da11f8 LB |
34 | |
35 | return 0xffff; | |
36 | } | |
37 | ||
38 | static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) | |
39 | { | |
40 | struct dsa_switch *ds = bus->priv; | |
41 | ||
0d8bcdd3 | 42 | if (ds->phys_mii_mask & (1 << addr)) |
9d490b4e | 43 | return ds->ops->phy_write(ds, addr, reg, val); |
91da11f8 LB |
44 | |
45 | return 0; | |
46 | } | |
47 | ||
48 | void dsa_slave_mii_bus_init(struct dsa_switch *ds) | |
49 | { | |
50 | ds->slave_mii_bus->priv = (void *)ds; | |
51 | ds->slave_mii_bus->name = "dsa slave smi"; | |
52 | ds->slave_mii_bus->read = dsa_slave_phy_read; | |
53 | ds->slave_mii_bus->write = dsa_slave_phy_write; | |
0b7b498d | 54 | snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d", |
49463b7f | 55 | ds->dst->index, ds->index); |
c33063d6 | 56 | ds->slave_mii_bus->parent = ds->dev; |
24df8986 | 57 | ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
91da11f8 LB |
58 | } |
59 | ||
60 | ||
61 | /* slave device handling ****************************************************/ | |
abd2be00 | 62 | static int dsa_slave_get_iflink(const struct net_device *dev) |
c0840801 | 63 | { |
d0006b00 | 64 | return dsa_slave_to_master(dev)->ifindex; |
c0840801 LB |
65 | } |
66 | ||
91da11f8 LB |
67 | static int dsa_slave_open(struct net_device *dev) |
68 | { | |
d0006b00 | 69 | struct net_device *master = dsa_slave_to_master(dev); |
d945097b | 70 | struct dsa_port *dp = dsa_slave_to_port(dev); |
df02c6ff LB |
71 | int err; |
72 | ||
73 | if (!(master->flags & IFF_UP)) | |
74 | return -ENETDOWN; | |
75 | ||
8feedbb4 | 76 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
a748ee24 | 77 | err = dev_uc_add(master, dev->dev_addr); |
df02c6ff LB |
78 | if (err < 0) |
79 | goto out; | |
80 | } | |
81 | ||
82 | if (dev->flags & IFF_ALLMULTI) { | |
83 | err = dev_set_allmulti(master, 1); | |
84 | if (err < 0) | |
85 | goto del_unicast; | |
86 | } | |
87 | if (dev->flags & IFF_PROMISC) { | |
88 | err = dev_set_promiscuity(master, 1); | |
89 | if (err < 0) | |
90 | goto clear_allmulti; | |
91 | } | |
92 | ||
0115dcd1 | 93 | err = dsa_port_enable(dp, dev->phydev); |
fb8a6a2b VD |
94 | if (err) |
95 | goto clear_promisc; | |
b73adef6 | 96 | |
aab9c406 | 97 | phylink_start(dp->pl); |
f7f1de51 | 98 | |
91da11f8 | 99 | return 0; |
df02c6ff | 100 | |
b2f2af21 FF |
101 | clear_promisc: |
102 | if (dev->flags & IFF_PROMISC) | |
4fdeddfe | 103 | dev_set_promiscuity(master, -1); |
df02c6ff LB |
104 | clear_allmulti: |
105 | if (dev->flags & IFF_ALLMULTI) | |
106 | dev_set_allmulti(master, -1); | |
107 | del_unicast: | |
8feedbb4 | 108 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 109 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
110 | out: |
111 | return err; | |
91da11f8 LB |
112 | } |
113 | ||
114 | static int dsa_slave_close(struct net_device *dev) | |
115 | { | |
d0006b00 | 116 | struct net_device *master = dsa_slave_to_master(dev); |
d945097b | 117 | struct dsa_port *dp = dsa_slave_to_port(dev); |
df02c6ff | 118 | |
97a69a0d VO |
119 | cancel_work_sync(&dp->xmit_work); |
120 | skb_queue_purge(&dp->xmit_queue); | |
121 | ||
aab9c406 | 122 | phylink_stop(dp->pl); |
f7f1de51 | 123 | |
75104db0 | 124 | dsa_port_disable(dp); |
6457edfe | 125 | |
df02c6ff | 126 | dev_mc_unsync(master, dev); |
a748ee24 | 127 | dev_uc_unsync(master, dev); |
df02c6ff LB |
128 | if (dev->flags & IFF_ALLMULTI) |
129 | dev_set_allmulti(master, -1); | |
130 | if (dev->flags & IFF_PROMISC) | |
131 | dev_set_promiscuity(master, -1); | |
132 | ||
8feedbb4 | 133 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 134 | dev_uc_del(master, dev->dev_addr); |
df02c6ff | 135 | |
91da11f8 LB |
136 | return 0; |
137 | } | |
138 | ||
139 | static void dsa_slave_change_rx_flags(struct net_device *dev, int change) | |
140 | { | |
d0006b00 | 141 | struct net_device *master = dsa_slave_to_master(dev); |
17ab4f61 RG |
142 | if (dev->flags & IFF_UP) { |
143 | if (change & IFF_ALLMULTI) | |
144 | dev_set_allmulti(master, | |
145 | dev->flags & IFF_ALLMULTI ? 1 : -1); | |
146 | if (change & IFF_PROMISC) | |
147 | dev_set_promiscuity(master, | |
148 | dev->flags & IFF_PROMISC ? 1 : -1); | |
149 | } | |
91da11f8 LB |
150 | } |
151 | ||
152 | static void dsa_slave_set_rx_mode(struct net_device *dev) | |
153 | { | |
d0006b00 | 154 | struct net_device *master = dsa_slave_to_master(dev); |
91da11f8 LB |
155 | |
156 | dev_mc_sync(master, dev); | |
a748ee24 | 157 | dev_uc_sync(master, dev); |
91da11f8 LB |
158 | } |
159 | ||
df02c6ff | 160 | static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
91da11f8 | 161 | { |
d0006b00 | 162 | struct net_device *master = dsa_slave_to_master(dev); |
df02c6ff LB |
163 | struct sockaddr *addr = a; |
164 | int err; | |
165 | ||
166 | if (!is_valid_ether_addr(addr->sa_data)) | |
167 | return -EADDRNOTAVAIL; | |
168 | ||
169 | if (!(dev->flags & IFF_UP)) | |
170 | goto out; | |
171 | ||
8feedbb4 | 172 | if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
a748ee24 | 173 | err = dev_uc_add(master, addr->sa_data); |
df02c6ff LB |
174 | if (err < 0) |
175 | return err; | |
176 | } | |
177 | ||
8feedbb4 | 178 | if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
a748ee24 | 179 | dev_uc_del(master, dev->dev_addr); |
df02c6ff LB |
180 | |
181 | out: | |
d08f161a | 182 | ether_addr_copy(dev->dev_addr, addr->sa_data); |
91da11f8 LB |
183 | |
184 | return 0; | |
185 | } | |
186 | ||
2bedde1a AS |
187 | struct dsa_slave_dump_ctx { |
188 | struct net_device *dev; | |
189 | struct sk_buff *skb; | |
190 | struct netlink_callback *cb; | |
191 | int idx; | |
192 | }; | |
193 | ||
194 | static int | |
195 | dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid, | |
196 | bool is_static, void *data) | |
197 | { | |
198 | struct dsa_slave_dump_ctx *dump = data; | |
199 | u32 portid = NETLINK_CB(dump->cb->skb).portid; | |
200 | u32 seq = dump->cb->nlh->nlmsg_seq; | |
201 | struct nlmsghdr *nlh; | |
202 | struct ndmsg *ndm; | |
203 | ||
204 | if (dump->idx < dump->cb->args[2]) | |
205 | goto skip; | |
206 | ||
207 | nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, | |
208 | sizeof(*ndm), NLM_F_MULTI); | |
209 | if (!nlh) | |
210 | return -EMSGSIZE; | |
211 | ||
212 | ndm = nlmsg_data(nlh); | |
213 | ndm->ndm_family = AF_BRIDGE; | |
214 | ndm->ndm_pad1 = 0; | |
215 | ndm->ndm_pad2 = 0; | |
216 | ndm->ndm_flags = NTF_SELF; | |
217 | ndm->ndm_type = 0; | |
218 | ndm->ndm_ifindex = dump->dev->ifindex; | |
219 | ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; | |
220 | ||
221 | if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) | |
222 | goto nla_put_failure; | |
223 | ||
224 | if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) | |
225 | goto nla_put_failure; | |
226 | ||
227 | nlmsg_end(dump->skb, nlh); | |
228 | ||
229 | skip: | |
230 | dump->idx++; | |
231 | return 0; | |
232 | ||
233 | nla_put_failure: | |
234 | nlmsg_cancel(dump->skb, nlh); | |
235 | return -EMSGSIZE; | |
236 | } | |
237 | ||
238 | static int | |
239 | dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, | |
240 | struct net_device *dev, struct net_device *filter_dev, | |
241 | int *idx) | |
242 | { | |
d945097b | 243 | struct dsa_port *dp = dsa_slave_to_port(dev); |
2bedde1a AS |
244 | struct dsa_slave_dump_ctx dump = { |
245 | .dev = dev, | |
246 | .skb = skb, | |
247 | .cb = cb, | |
248 | .idx = *idx, | |
249 | }; | |
2bedde1a AS |
250 | int err; |
251 | ||
de40fc5d | 252 | err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump); |
2bedde1a | 253 | *idx = dump.idx; |
de40fc5d | 254 | |
2bedde1a AS |
255 | return err; |
256 | } | |
257 | ||
91da11f8 LB |
258 | static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
259 | { | |
0336369d BS |
260 | struct dsa_slave_priv *p = netdev_priv(dev); |
261 | struct dsa_switch *ds = p->dp->ds; | |
262 | int port = p->dp->index; | |
263 | ||
264 | /* Pass through to switch driver if it supports timestamping */ | |
265 | switch (cmd) { | |
266 | case SIOCGHWTSTAMP: | |
267 | if (ds->ops->port_hwtstamp_get) | |
268 | return ds->ops->port_hwtstamp_get(ds, port, ifr); | |
269 | break; | |
270 | case SIOCSHWTSTAMP: | |
271 | if (ds->ops->port_hwtstamp_set) | |
272 | return ds->ops->port_hwtstamp_set(ds, port, ifr); | |
273 | break; | |
274 | } | |
275 | ||
aab9c406 | 276 | return phylink_mii_ioctl(p->dp->pl, ifr, cmd); |
91da11f8 LB |
277 | } |
278 | ||
35636062 | 279 | static int dsa_slave_port_attr_set(struct net_device *dev, |
f7fadf30 | 280 | const struct switchdev_attr *attr, |
7ea6eb3f | 281 | struct switchdev_trans *trans) |
35636062 | 282 | { |
d945097b | 283 | struct dsa_port *dp = dsa_slave_to_port(dev); |
b8d866ac | 284 | int ret; |
35636062 SF |
285 | |
286 | switch (attr->id) { | |
1f868398 | 287 | case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
fd364541 | 288 | ret = dsa_port_set_state(dp, attr->u.stp_state, trans); |
35636062 | 289 | break; |
fb2dabad | 290 | case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
c02c4175 VD |
291 | ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering, |
292 | trans); | |
fb2dabad | 293 | break; |
34a79f63 | 294 | case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: |
072bb190 | 295 | ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans); |
34a79f63 | 296 | break; |
ea87005a FF |
297 | case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: |
298 | ret = dsa_port_pre_bridge_flags(dp, attr->u.brport_flags, | |
299 | trans); | |
300 | break; | |
57652796 RK |
301 | case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: |
302 | ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, trans); | |
303 | break; | |
08cc83cc VD |
304 | case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER: |
305 | ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, trans); | |
306 | break; | |
35636062 SF |
307 | default: |
308 | ret = -EOPNOTSUPP; | |
309 | break; | |
310 | } | |
311 | ||
312 | return ret; | |
313 | } | |
314 | ||
bdcff080 VD |
315 | static int dsa_slave_vlan_add(struct net_device *dev, |
316 | const struct switchdev_obj *obj, | |
317 | struct switchdev_trans *trans) | |
318 | { | |
319 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
320 | struct switchdev_obj_port_vlan vlan; | |
321 | int err; | |
322 | ||
323 | if (obj->orig_dev != dev) | |
324 | return -EOPNOTSUPP; | |
325 | ||
c5335d73 VD |
326 | if (dp->bridge_dev && !br_vlan_enabled(dp->bridge_dev)) |
327 | return 0; | |
328 | ||
bdcff080 VD |
329 | vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj); |
330 | ||
331 | err = dsa_port_vlan_add(dp, &vlan, trans); | |
332 | if (err) | |
333 | return err; | |
334 | ||
b9499904 VD |
335 | /* We need the dedicated CPU port to be a member of the VLAN as well. |
336 | * Even though drivers often handle CPU membership in special ways, | |
337 | * it doesn't make sense to program a PVID, so clear this flag. | |
338 | */ | |
339 | vlan.flags &= ~BRIDGE_VLAN_INFO_PVID; | |
340 | ||
7e1741b4 VD |
341 | err = dsa_port_vlan_add(dp->cpu_dp, &vlan, trans); |
342 | if (err) | |
343 | return err; | |
344 | ||
bdcff080 VD |
345 | return 0; |
346 | } | |
347 | ||
ba14d9eb | 348 | static int dsa_slave_port_obj_add(struct net_device *dev, |
648b4a99 | 349 | const struct switchdev_obj *obj, |
79b139f4 VD |
350 | struct switchdev_trans *trans, |
351 | struct netlink_ext_ack *extack) | |
ba14d9eb | 352 | { |
d945097b | 353 | struct dsa_port *dp = dsa_slave_to_port(dev); |
ba14d9eb VD |
354 | int err; |
355 | ||
356 | /* For the prepare phase, ensure the full set of changes is feasable in | |
357 | * one go in order to signal a failure properly. If an operation is not | |
358 | * supported, return -EOPNOTSUPP. | |
359 | */ | |
360 | ||
9e8f4a54 | 361 | switch (obj->id) { |
8df30255 | 362 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
79b139f4 VD |
363 | if (obj->orig_dev != dev) |
364 | return -EOPNOTSUPP; | |
bcebb976 | 365 | err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans); |
8df30255 | 366 | break; |
5f4dbc50 AL |
367 | case SWITCHDEV_OBJ_ID_HOST_MDB: |
368 | /* DSA can directly translate this to a normal MDB add, | |
369 | * but on the CPU port. | |
370 | */ | |
371 | err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj), | |
372 | trans); | |
373 | break; | |
57d80838 | 374 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
bdcff080 | 375 | err = dsa_slave_vlan_add(dev, obj, trans); |
11149536 | 376 | break; |
ba14d9eb VD |
377 | default: |
378 | err = -EOPNOTSUPP; | |
379 | break; | |
380 | } | |
381 | ||
382 | return err; | |
383 | } | |
384 | ||
bdcff080 VD |
385 | static int dsa_slave_vlan_del(struct net_device *dev, |
386 | const struct switchdev_obj *obj) | |
387 | { | |
388 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
389 | ||
390 | if (obj->orig_dev != dev) | |
391 | return -EOPNOTSUPP; | |
392 | ||
c5335d73 VD |
393 | if (dp->bridge_dev && !br_vlan_enabled(dp->bridge_dev)) |
394 | return 0; | |
395 | ||
7e1741b4 VD |
396 | /* Do not deprogram the CPU port as it may be shared with other user |
397 | * ports which can be members of this VLAN as well. | |
398 | */ | |
bdcff080 VD |
399 | return dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj)); |
400 | } | |
401 | ||
ba14d9eb | 402 | static int dsa_slave_port_obj_del(struct net_device *dev, |
648b4a99 | 403 | const struct switchdev_obj *obj) |
ba14d9eb | 404 | { |
d945097b | 405 | struct dsa_port *dp = dsa_slave_to_port(dev); |
ba14d9eb VD |
406 | int err; |
407 | ||
9e8f4a54 | 408 | switch (obj->id) { |
8df30255 | 409 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
79b139f4 VD |
410 | if (obj->orig_dev != dev) |
411 | return -EOPNOTSUPP; | |
bcebb976 | 412 | err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); |
8df30255 | 413 | break; |
5f4dbc50 AL |
414 | case SWITCHDEV_OBJ_ID_HOST_MDB: |
415 | /* DSA can directly translate this to a normal MDB add, | |
416 | * but on the CPU port. | |
417 | */ | |
418 | err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj)); | |
419 | break; | |
57d80838 | 420 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
bdcff080 | 421 | err = dsa_slave_vlan_del(dev, obj); |
11149536 | 422 | break; |
ba14d9eb VD |
423 | default: |
424 | err = -EOPNOTSUPP; | |
425 | break; | |
426 | } | |
427 | ||
428 | return err; | |
429 | } | |
430 | ||
929d6c14 FF |
431 | static int dsa_slave_get_port_parent_id(struct net_device *dev, |
432 | struct netdev_phys_item_id *ppid) | |
b73adef6 | 433 | { |
d945097b VD |
434 | struct dsa_port *dp = dsa_slave_to_port(dev); |
435 | struct dsa_switch *ds = dp->ds; | |
a42c8e33 | 436 | struct dsa_switch_tree *dst = ds->dst; |
b73adef6 | 437 | |
15b04ace JP |
438 | /* For non-legacy ports, devlink is used and it takes |
439 | * care of the name generation. This ndo implementation | |
440 | * should be removed with legacy support. | |
441 | */ | |
442 | if (dp->ds->devlink) | |
443 | return -EOPNOTSUPP; | |
444 | ||
929d6c14 FF |
445 | ppid->id_len = sizeof(dst->index); |
446 | memcpy(&ppid->id, &dst->index, ppid->id_len); | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
4fa7b718 VD |
451 | static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev, |
452 | struct sk_buff *skb) | |
04ff53f9 FF |
453 | { |
454 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4fa7b718 VD |
455 | struct dsa_slave_priv *p = netdev_priv(dev); |
456 | ||
04ff53f9 FF |
457 | if (p->netpoll) |
458 | netpoll_send_skb(p->netpoll, skb); | |
459 | #else | |
460 | BUG(); | |
461 | #endif | |
462 | return NETDEV_TX_OK; | |
463 | } | |
464 | ||
90af1059 BS |
465 | static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p, |
466 | struct sk_buff *skb) | |
467 | { | |
468 | struct dsa_switch *ds = p->dp->ds; | |
469 | struct sk_buff *clone; | |
470 | unsigned int type; | |
471 | ||
472 | type = ptp_classify_raw(skb); | |
473 | if (type == PTP_CLASS_NONE) | |
474 | return; | |
475 | ||
476 | if (!ds->ops->port_txtstamp) | |
477 | return; | |
478 | ||
479 | clone = skb_clone_sk(skb); | |
480 | if (!clone) | |
481 | return; | |
482 | ||
146d442c VO |
483 | DSA_SKB_CB(skb)->clone = clone; |
484 | ||
90af1059 BS |
485 | if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type)) |
486 | return; | |
487 | ||
488 | kfree_skb(clone); | |
489 | } | |
490 | ||
97a69a0d VO |
491 | netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev) |
492 | { | |
493 | /* SKB for netpoll still need to be mangled with the protocol-specific | |
494 | * tag to be successfully transmitted | |
495 | */ | |
496 | if (unlikely(netpoll_tx_running(dev))) | |
497 | return dsa_slave_netpoll_send_skb(dev, skb); | |
498 | ||
499 | /* Queue the SKB for transmission on the parent interface, but | |
500 | * do not modify its EtherType | |
501 | */ | |
502 | skb->dev = dsa_slave_to_master(dev); | |
503 | dev_queue_xmit(skb); | |
504 | ||
505 | return NETDEV_TX_OK; | |
506 | } | |
507 | EXPORT_SYMBOL_GPL(dsa_enqueue_skb); | |
508 | ||
3e8a72d1 FF |
509 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
510 | { | |
511 | struct dsa_slave_priv *p = netdev_priv(dev); | |
5f6b4e14 | 512 | struct pcpu_sw_netstats *s; |
4ed70ce9 | 513 | struct sk_buff *nskb; |
3e8a72d1 | 514 | |
5f6b4e14 FF |
515 | s = this_cpu_ptr(p->stats64); |
516 | u64_stats_update_begin(&s->syncp); | |
517 | s->tx_packets++; | |
518 | s->tx_bytes += skb->len; | |
519 | u64_stats_update_end(&s->syncp); | |
3e8a72d1 | 520 | |
87671375 | 521 | DSA_SKB_CB(skb)->deferred_xmit = false; |
146d442c | 522 | DSA_SKB_CB(skb)->clone = NULL; |
87671375 | 523 | |
90af1059 BS |
524 | /* Identify PTP protocol packets, clone them, and pass them to the |
525 | * switch driver | |
526 | */ | |
527 | dsa_skb_tx_timestamp(p, skb); | |
528 | ||
fe47d563 VD |
529 | /* Transmit function may have to reallocate the original SKB, |
530 | * in which case it must have freed it. Only free it here on error. | |
531 | */ | |
4ed70ce9 | 532 | nskb = p->xmit(skb, dev); |
fe47d563 | 533 | if (!nskb) { |
97a69a0d VO |
534 | if (!DSA_SKB_CB(skb)->deferred_xmit) |
535 | kfree_skb(skb); | |
4ed70ce9 | 536 | return NETDEV_TX_OK; |
fe47d563 | 537 | } |
5aed85ce | 538 | |
97a69a0d VO |
539 | return dsa_enqueue_skb(nskb, dev); |
540 | } | |
04ff53f9 | 541 | |
97a69a0d VO |
542 | void *dsa_defer_xmit(struct sk_buff *skb, struct net_device *dev) |
543 | { | |
544 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
5aed85ce | 545 | |
97a69a0d VO |
546 | DSA_SKB_CB(skb)->deferred_xmit = true; |
547 | ||
548 | skb_queue_tail(&dp->xmit_queue, skb); | |
549 | schedule_work(&dp->xmit_work); | |
550 | return NULL; | |
551 | } | |
552 | EXPORT_SYMBOL_GPL(dsa_defer_xmit); | |
553 | ||
554 | static void dsa_port_xmit_work(struct work_struct *work) | |
555 | { | |
556 | struct dsa_port *dp = container_of(work, struct dsa_port, xmit_work); | |
557 | struct dsa_switch *ds = dp->ds; | |
558 | struct sk_buff *skb; | |
559 | ||
560 | if (unlikely(!ds->ops->port_deferred_xmit)) | |
561 | return; | |
562 | ||
563 | while ((skb = skb_dequeue(&dp->xmit_queue)) != NULL) | |
564 | ds->ops->port_deferred_xmit(ds, dp->index, skb); | |
5aed85ce FF |
565 | } |
566 | ||
91da11f8 | 567 | /* ethtool operations *******************************************************/ |
91da11f8 | 568 | |
91da11f8 LB |
569 | static void dsa_slave_get_drvinfo(struct net_device *dev, |
570 | struct ethtool_drvinfo *drvinfo) | |
571 | { | |
7826d43f | 572 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
7826d43f JP |
573 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); |
574 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
575 | } |
576 | ||
3d762a0f GR |
577 | static int dsa_slave_get_regs_len(struct net_device *dev) |
578 | { | |
d945097b VD |
579 | struct dsa_port *dp = dsa_slave_to_port(dev); |
580 | struct dsa_switch *ds = dp->ds; | |
3d762a0f | 581 | |
9d490b4e | 582 | if (ds->ops->get_regs_len) |
d945097b | 583 | return ds->ops->get_regs_len(ds, dp->index); |
3d762a0f GR |
584 | |
585 | return -EOPNOTSUPP; | |
586 | } | |
587 | ||
588 | static void | |
589 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
590 | { | |
d945097b VD |
591 | struct dsa_port *dp = dsa_slave_to_port(dev); |
592 | struct dsa_switch *ds = dp->ds; | |
3d762a0f | 593 | |
9d490b4e | 594 | if (ds->ops->get_regs) |
d945097b | 595 | ds->ops->get_regs(ds, dp->index, regs, _p); |
3d762a0f GR |
596 | } |
597 | ||
aab9c406 FF |
598 | static int dsa_slave_nway_reset(struct net_device *dev) |
599 | { | |
600 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
601 | ||
602 | return phylink_ethtool_nway_reset(dp->pl); | |
603 | } | |
604 | ||
6793abb4 GR |
605 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
606 | { | |
d945097b VD |
607 | struct dsa_port *dp = dsa_slave_to_port(dev); |
608 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 609 | |
0e576044 | 610 | if (ds->cd && ds->cd->eeprom_len) |
ff04955c | 611 | return ds->cd->eeprom_len; |
6793abb4 | 612 | |
9d490b4e VD |
613 | if (ds->ops->get_eeprom_len) |
614 | return ds->ops->get_eeprom_len(ds); | |
6793abb4 GR |
615 | |
616 | return 0; | |
617 | } | |
618 | ||
619 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
620 | struct ethtool_eeprom *eeprom, u8 *data) | |
621 | { | |
d945097b VD |
622 | struct dsa_port *dp = dsa_slave_to_port(dev); |
623 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 624 | |
9d490b4e VD |
625 | if (ds->ops->get_eeprom) |
626 | return ds->ops->get_eeprom(ds, eeprom, data); | |
6793abb4 GR |
627 | |
628 | return -EOPNOTSUPP; | |
629 | } | |
630 | ||
631 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
632 | struct ethtool_eeprom *eeprom, u8 *data) | |
633 | { | |
d945097b VD |
634 | struct dsa_port *dp = dsa_slave_to_port(dev); |
635 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 636 | |
9d490b4e VD |
637 | if (ds->ops->set_eeprom) |
638 | return ds->ops->set_eeprom(ds, eeprom, data); | |
6793abb4 GR |
639 | |
640 | return -EOPNOTSUPP; | |
641 | } | |
642 | ||
91da11f8 LB |
643 | static void dsa_slave_get_strings(struct net_device *dev, |
644 | uint32_t stringset, uint8_t *data) | |
645 | { | |
d945097b VD |
646 | struct dsa_port *dp = dsa_slave_to_port(dev); |
647 | struct dsa_switch *ds = dp->ds; | |
91da11f8 LB |
648 | |
649 | if (stringset == ETH_SS_STATS) { | |
650 | int len = ETH_GSTRING_LEN; | |
651 | ||
652 | strncpy(data, "tx_packets", len); | |
653 | strncpy(data + len, "tx_bytes", len); | |
654 | strncpy(data + 2 * len, "rx_packets", len); | |
655 | strncpy(data + 3 * len, "rx_bytes", len); | |
9d490b4e | 656 | if (ds->ops->get_strings) |
89f09048 FF |
657 | ds->ops->get_strings(ds, dp->index, stringset, |
658 | data + 4 * len); | |
91da11f8 LB |
659 | } |
660 | } | |
661 | ||
662 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
663 | struct ethtool_stats *stats, | |
664 | uint64_t *data) | |
665 | { | |
d945097b | 666 | struct dsa_port *dp = dsa_slave_to_port(dev); |
91da11f8 | 667 | struct dsa_slave_priv *p = netdev_priv(dev); |
d945097b | 668 | struct dsa_switch *ds = dp->ds; |
5f6b4e14 | 669 | struct pcpu_sw_netstats *s; |
f613ed66 | 670 | unsigned int start; |
5f6b4e14 FF |
671 | int i; |
672 | ||
673 | for_each_possible_cpu(i) { | |
674 | u64 tx_packets, tx_bytes, rx_packets, rx_bytes; | |
675 | ||
676 | s = per_cpu_ptr(p->stats64, i); | |
677 | do { | |
678 | start = u64_stats_fetch_begin_irq(&s->syncp); | |
679 | tx_packets = s->tx_packets; | |
680 | tx_bytes = s->tx_bytes; | |
681 | rx_packets = s->rx_packets; | |
682 | rx_bytes = s->rx_bytes; | |
683 | } while (u64_stats_fetch_retry_irq(&s->syncp, start)); | |
684 | data[0] += tx_packets; | |
685 | data[1] += tx_bytes; | |
686 | data[2] += rx_packets; | |
687 | data[3] += rx_bytes; | |
688 | } | |
9d490b4e | 689 | if (ds->ops->get_ethtool_stats) |
d945097b | 690 | ds->ops->get_ethtool_stats(ds, dp->index, data + 4); |
91da11f8 LB |
691 | } |
692 | ||
693 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
694 | { | |
d945097b VD |
695 | struct dsa_port *dp = dsa_slave_to_port(dev); |
696 | struct dsa_switch *ds = dp->ds; | |
91da11f8 LB |
697 | |
698 | if (sset == ETH_SS_STATS) { | |
699 | int count; | |
700 | ||
701 | count = 4; | |
9d490b4e | 702 | if (ds->ops->get_sset_count) |
89f09048 | 703 | count += ds->ops->get_sset_count(ds, dp->index, sset); |
91da11f8 LB |
704 | |
705 | return count; | |
706 | } | |
707 | ||
708 | return -EOPNOTSUPP; | |
709 | } | |
710 | ||
19e57c4e FF |
711 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
712 | { | |
d945097b VD |
713 | struct dsa_port *dp = dsa_slave_to_port(dev); |
714 | struct dsa_switch *ds = dp->ds; | |
19e57c4e | 715 | |
aab9c406 FF |
716 | phylink_ethtool_get_wol(dp->pl, w); |
717 | ||
9d490b4e | 718 | if (ds->ops->get_wol) |
d945097b | 719 | ds->ops->get_wol(ds, dp->index, w); |
19e57c4e FF |
720 | } |
721 | ||
722 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
723 | { | |
d945097b VD |
724 | struct dsa_port *dp = dsa_slave_to_port(dev); |
725 | struct dsa_switch *ds = dp->ds; | |
19e57c4e FF |
726 | int ret = -EOPNOTSUPP; |
727 | ||
aab9c406 FF |
728 | phylink_ethtool_set_wol(dp->pl, w); |
729 | ||
9d490b4e | 730 | if (ds->ops->set_wol) |
d945097b | 731 | ret = ds->ops->set_wol(ds, dp->index, w); |
19e57c4e FF |
732 | |
733 | return ret; | |
734 | } | |
735 | ||
7905288f FF |
736 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
737 | { | |
d945097b VD |
738 | struct dsa_port *dp = dsa_slave_to_port(dev); |
739 | struct dsa_switch *ds = dp->ds; | |
7905288f FF |
740 | int ret; |
741 | ||
7b9cc738 | 742 | /* Port's PHY and MAC both need to be EEE capable */ |
00670cb8 | 743 | if (!dev->phydev || !dp->pl) |
7b9cc738 VD |
744 | return -ENODEV; |
745 | ||
08f50061 | 746 | if (!ds->ops->set_mac_eee) |
7905288f FF |
747 | return -EOPNOTSUPP; |
748 | ||
d945097b | 749 | ret = ds->ops->set_mac_eee(ds, dp->index, e); |
7905288f FF |
750 | if (ret) |
751 | return ret; | |
752 | ||
aab9c406 | 753 | return phylink_ethtool_set_eee(dp->pl, e); |
7905288f FF |
754 | } |
755 | ||
756 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
757 | { | |
d945097b VD |
758 | struct dsa_port *dp = dsa_slave_to_port(dev); |
759 | struct dsa_switch *ds = dp->ds; | |
7905288f FF |
760 | int ret; |
761 | ||
7b9cc738 | 762 | /* Port's PHY and MAC both need to be EEE capable */ |
00670cb8 | 763 | if (!dev->phydev || !dp->pl) |
7b9cc738 VD |
764 | return -ENODEV; |
765 | ||
08f50061 | 766 | if (!ds->ops->get_mac_eee) |
7905288f FF |
767 | return -EOPNOTSUPP; |
768 | ||
d945097b | 769 | ret = ds->ops->get_mac_eee(ds, dp->index, e); |
7905288f FF |
770 | if (ret) |
771 | return ret; | |
772 | ||
aab9c406 FF |
773 | return phylink_ethtool_get_eee(dp->pl, e); |
774 | } | |
775 | ||
776 | static int dsa_slave_get_link_ksettings(struct net_device *dev, | |
777 | struct ethtool_link_ksettings *cmd) | |
778 | { | |
779 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
780 | ||
781 | return phylink_ethtool_ksettings_get(dp->pl, cmd); | |
782 | } | |
783 | ||
784 | static int dsa_slave_set_link_ksettings(struct net_device *dev, | |
785 | const struct ethtool_link_ksettings *cmd) | |
786 | { | |
787 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
788 | ||
789 | return phylink_ethtool_ksettings_set(dp->pl, cmd); | |
7905288f FF |
790 | } |
791 | ||
a2a1a13b HK |
792 | static void dsa_slave_get_pauseparam(struct net_device *dev, |
793 | struct ethtool_pauseparam *pause) | |
794 | { | |
795 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
796 | ||
797 | phylink_ethtool_get_pauseparam(dp->pl, pause); | |
798 | } | |
799 | ||
800 | static int dsa_slave_set_pauseparam(struct net_device *dev, | |
801 | struct ethtool_pauseparam *pause) | |
802 | { | |
803 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
804 | ||
805 | return phylink_ethtool_set_pauseparam(dp->pl, pause); | |
806 | } | |
807 | ||
04ff53f9 FF |
808 | #ifdef CONFIG_NET_POLL_CONTROLLER |
809 | static int dsa_slave_netpoll_setup(struct net_device *dev, | |
810 | struct netpoll_info *ni) | |
811 | { | |
d0006b00 | 812 | struct net_device *master = dsa_slave_to_master(dev); |
04ff53f9 | 813 | struct dsa_slave_priv *p = netdev_priv(dev); |
04ff53f9 FF |
814 | struct netpoll *netpoll; |
815 | int err = 0; | |
816 | ||
817 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
818 | if (!netpoll) | |
819 | return -ENOMEM; | |
820 | ||
821 | err = __netpoll_setup(netpoll, master); | |
822 | if (err) { | |
823 | kfree(netpoll); | |
824 | goto out; | |
825 | } | |
826 | ||
827 | p->netpoll = netpoll; | |
828 | out: | |
829 | return err; | |
830 | } | |
831 | ||
832 | static void dsa_slave_netpoll_cleanup(struct net_device *dev) | |
833 | { | |
834 | struct dsa_slave_priv *p = netdev_priv(dev); | |
835 | struct netpoll *netpoll = p->netpoll; | |
836 | ||
837 | if (!netpoll) | |
838 | return; | |
839 | ||
840 | p->netpoll = NULL; | |
841 | ||
c9fbd71f | 842 | __netpoll_free(netpoll); |
04ff53f9 FF |
843 | } |
844 | ||
845 | static void dsa_slave_poll_controller(struct net_device *dev) | |
846 | { | |
847 | } | |
848 | #endif | |
849 | ||
44bb765c FF |
850 | static int dsa_slave_get_phys_port_name(struct net_device *dev, |
851 | char *name, size_t len) | |
852 | { | |
d945097b | 853 | struct dsa_port *dp = dsa_slave_to_port(dev); |
44bb765c | 854 | |
d484210b JP |
855 | /* For non-legacy ports, devlink is used and it takes |
856 | * care of the name generation. This ndo implementation | |
857 | * should be removed with legacy support. | |
858 | */ | |
859 | if (dp->ds->devlink) | |
860 | return -EOPNOTSUPP; | |
861 | ||
d945097b | 862 | if (snprintf(name, len, "p%d", dp->index) >= len) |
44bb765c | 863 | return -EINVAL; |
3a543ef4 FF |
864 | |
865 | return 0; | |
866 | } | |
867 | ||
f50f2127 | 868 | static struct dsa_mall_tc_entry * |
4fa7b718 | 869 | dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie) |
f50f2127 | 870 | { |
4fa7b718 | 871 | struct dsa_slave_priv *p = netdev_priv(dev); |
f50f2127 FF |
872 | struct dsa_mall_tc_entry *mall_tc_entry; |
873 | ||
874 | list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) | |
875 | if (mall_tc_entry->cookie == cookie) | |
876 | return mall_tc_entry; | |
877 | ||
878 | return NULL; | |
879 | } | |
880 | ||
881 | static int dsa_slave_add_cls_matchall(struct net_device *dev, | |
f50f2127 FF |
882 | struct tc_cls_matchall_offload *cls, |
883 | bool ingress) | |
884 | { | |
d945097b | 885 | struct dsa_port *dp = dsa_slave_to_port(dev); |
f50f2127 FF |
886 | struct dsa_slave_priv *p = netdev_priv(dev); |
887 | struct dsa_mall_tc_entry *mall_tc_entry; | |
5fd9fc4e | 888 | __be16 protocol = cls->common.protocol; |
d945097b | 889 | struct dsa_switch *ds = dp->ds; |
9681e8b3 | 890 | struct flow_action_entry *act; |
d945097b | 891 | struct dsa_port *to_dp; |
f50f2127 | 892 | int err = -EOPNOTSUPP; |
f50f2127 FF |
893 | |
894 | if (!ds->ops->port_mirror_add) | |
895 | return err; | |
896 | ||
9681e8b3 | 897 | if (!flow_offload_has_one_action(&cls->rule->action)) |
f50f2127 FF |
898 | return err; |
899 | ||
9681e8b3 | 900 | act = &cls->rule->action.entries[0]; |
f50f2127 | 901 | |
9681e8b3 | 902 | if (act->id == FLOW_ACTION_MIRRED && protocol == htons(ETH_P_ALL)) { |
f50f2127 FF |
903 | struct dsa_mall_mirror_tc_entry *mirror; |
904 | ||
9681e8b3 | 905 | if (!act->dev) |
f50f2127 FF |
906 | return -EINVAL; |
907 | ||
9681e8b3 | 908 | if (!dsa_slave_dev_check(act->dev)) |
f50f2127 FF |
909 | return -EOPNOTSUPP; |
910 | ||
911 | mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL); | |
912 | if (!mall_tc_entry) | |
913 | return -ENOMEM; | |
914 | ||
915 | mall_tc_entry->cookie = cls->cookie; | |
916 | mall_tc_entry->type = DSA_PORT_MALL_MIRROR; | |
917 | mirror = &mall_tc_entry->mirror; | |
918 | ||
9681e8b3 | 919 | to_dp = dsa_slave_to_port(act->dev); |
f50f2127 | 920 | |
d945097b | 921 | mirror->to_local_port = to_dp->index; |
f50f2127 FF |
922 | mirror->ingress = ingress; |
923 | ||
d945097b | 924 | err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress); |
f50f2127 FF |
925 | if (err) { |
926 | kfree(mall_tc_entry); | |
927 | return err; | |
928 | } | |
929 | ||
930 | list_add_tail(&mall_tc_entry->list, &p->mall_tc_list); | |
931 | } | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | static void dsa_slave_del_cls_matchall(struct net_device *dev, | |
937 | struct tc_cls_matchall_offload *cls) | |
938 | { | |
d945097b | 939 | struct dsa_port *dp = dsa_slave_to_port(dev); |
f50f2127 | 940 | struct dsa_mall_tc_entry *mall_tc_entry; |
d945097b | 941 | struct dsa_switch *ds = dp->ds; |
f50f2127 FF |
942 | |
943 | if (!ds->ops->port_mirror_del) | |
944 | return; | |
945 | ||
4fa7b718 | 946 | mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie); |
f50f2127 FF |
947 | if (!mall_tc_entry) |
948 | return; | |
949 | ||
950 | list_del(&mall_tc_entry->list); | |
951 | ||
952 | switch (mall_tc_entry->type) { | |
953 | case DSA_PORT_MALL_MIRROR: | |
d945097b | 954 | ds->ops->port_mirror_del(ds, dp->index, &mall_tc_entry->mirror); |
f50f2127 FF |
955 | break; |
956 | default: | |
957 | WARN_ON(1); | |
958 | } | |
959 | ||
960 | kfree(mall_tc_entry); | |
961 | } | |
962 | ||
3fbae382 | 963 | static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev, |
6b3eb752 JP |
964 | struct tc_cls_matchall_offload *cls, |
965 | bool ingress) | |
f50f2127 | 966 | { |
5fd9fc4e | 967 | if (cls->common.chain_index) |
a5fcf8a6 | 968 | return -EOPNOTSUPP; |
f50f2127 | 969 | |
3fbae382 JP |
970 | switch (cls->command) { |
971 | case TC_CLSMATCHALL_REPLACE: | |
5fd9fc4e | 972 | return dsa_slave_add_cls_matchall(dev, cls, ingress); |
3fbae382 JP |
973 | case TC_CLSMATCHALL_DESTROY: |
974 | dsa_slave_del_cls_matchall(dev, cls); | |
975 | return 0; | |
976 | default: | |
977 | return -EOPNOTSUPP; | |
978 | } | |
979 | } | |
980 | ||
6b3eb752 JP |
981 | static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data, |
982 | void *cb_priv, bool ingress) | |
983 | { | |
984 | struct net_device *dev = cb_priv; | |
985 | ||
44ae12a7 JP |
986 | if (!tc_can_offload(dev)) |
987 | return -EOPNOTSUPP; | |
988 | ||
6b3eb752 JP |
989 | switch (type) { |
990 | case TC_SETUP_CLSMATCHALL: | |
991 | return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress); | |
992 | default: | |
993 | return -EOPNOTSUPP; | |
994 | } | |
995 | } | |
996 | ||
997 | static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type, | |
998 | void *type_data, void *cb_priv) | |
999 | { | |
1000 | return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true); | |
1001 | } | |
1002 | ||
1003 | static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type, | |
1004 | void *type_data, void *cb_priv) | |
1005 | { | |
1006 | return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false); | |
1007 | } | |
1008 | ||
955bcb6e PNA |
1009 | static LIST_HEAD(dsa_slave_block_cb_list); |
1010 | ||
6b3eb752 | 1011 | static int dsa_slave_setup_tc_block(struct net_device *dev, |
955bcb6e | 1012 | struct flow_block_offload *f) |
6b3eb752 | 1013 | { |
955bcb6e | 1014 | struct flow_block_cb *block_cb; |
a7323311 | 1015 | flow_setup_cb_t *cb; |
6b3eb752 | 1016 | |
32f8c409 | 1017 | if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) |
6b3eb752 | 1018 | cb = dsa_slave_setup_tc_block_cb_ig; |
32f8c409 | 1019 | else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) |
6b3eb752 JP |
1020 | cb = dsa_slave_setup_tc_block_cb_eg; |
1021 | else | |
1022 | return -EOPNOTSUPP; | |
1023 | ||
955bcb6e PNA |
1024 | f->driver_block_list = &dsa_slave_block_cb_list; |
1025 | ||
6b3eb752 | 1026 | switch (f->command) { |
9c0e189e | 1027 | case FLOW_BLOCK_BIND: |
0d4fd02e PNA |
1028 | if (flow_block_cb_is_busy(cb, dev, &dsa_slave_block_cb_list)) |
1029 | return -EBUSY; | |
1030 | ||
0c7294dd | 1031 | block_cb = flow_block_cb_alloc(cb, dev, dev, NULL); |
955bcb6e PNA |
1032 | if (IS_ERR(block_cb)) |
1033 | return PTR_ERR(block_cb); | |
1034 | ||
1035 | flow_block_cb_add(block_cb, f); | |
1036 | list_add_tail(&block_cb->driver_list, &dsa_slave_block_cb_list); | |
1037 | return 0; | |
9c0e189e | 1038 | case FLOW_BLOCK_UNBIND: |
14bfb13f | 1039 | block_cb = flow_block_cb_lookup(f->block, cb, dev); |
955bcb6e PNA |
1040 | if (!block_cb) |
1041 | return -ENOENT; | |
1042 | ||
1043 | flow_block_cb_remove(block_cb, f); | |
1044 | list_del(&block_cb->driver_list); | |
6b3eb752 JP |
1045 | return 0; |
1046 | default: | |
1047 | return -EOPNOTSUPP; | |
1048 | } | |
1049 | } | |
1050 | ||
3fbae382 | 1051 | static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1052 | void *type_data) |
3fbae382 | 1053 | { |
47d23af2 VO |
1054 | struct dsa_port *dp = dsa_slave_to_port(dev); |
1055 | struct dsa_switch *ds = dp->ds; | |
1056 | ||
1057 | if (type == TC_SETUP_BLOCK) | |
6b3eb752 | 1058 | return dsa_slave_setup_tc_block(dev, type_data); |
47d23af2 VO |
1059 | |
1060 | if (!ds->ops->port_setup_tc) | |
a5fcf8a6 | 1061 | return -EOPNOTSUPP; |
47d23af2 VO |
1062 | |
1063 | return ds->ops->port_setup_tc(ds, dp->index, type, type_data); | |
f50f2127 FF |
1064 | } |
1065 | ||
f613ed66 FF |
1066 | static void dsa_slave_get_stats64(struct net_device *dev, |
1067 | struct rtnl_link_stats64 *stats) | |
1068 | { | |
1069 | struct dsa_slave_priv *p = netdev_priv(dev); | |
5f6b4e14 | 1070 | struct pcpu_sw_netstats *s; |
f613ed66 | 1071 | unsigned int start; |
5f6b4e14 | 1072 | int i; |
f613ed66 FF |
1073 | |
1074 | netdev_stats_to_stats64(stats, &dev->stats); | |
5f6b4e14 FF |
1075 | for_each_possible_cpu(i) { |
1076 | u64 tx_packets, tx_bytes, rx_packets, rx_bytes; | |
1077 | ||
1078 | s = per_cpu_ptr(p->stats64, i); | |
1079 | do { | |
1080 | start = u64_stats_fetch_begin_irq(&s->syncp); | |
1081 | tx_packets = s->tx_packets; | |
1082 | tx_bytes = s->tx_bytes; | |
1083 | rx_packets = s->rx_packets; | |
1084 | rx_bytes = s->rx_bytes; | |
1085 | } while (u64_stats_fetch_retry_irq(&s->syncp, start)); | |
1086 | ||
1087 | stats->tx_packets += tx_packets; | |
1088 | stats->tx_bytes += tx_bytes; | |
1089 | stats->rx_packets += rx_packets; | |
1090 | stats->rx_bytes += rx_bytes; | |
1091 | } | |
f613ed66 FF |
1092 | } |
1093 | ||
bf9f2648 FF |
1094 | static int dsa_slave_get_rxnfc(struct net_device *dev, |
1095 | struct ethtool_rxnfc *nfc, u32 *rule_locs) | |
1096 | { | |
d945097b VD |
1097 | struct dsa_port *dp = dsa_slave_to_port(dev); |
1098 | struct dsa_switch *ds = dp->ds; | |
bf9f2648 FF |
1099 | |
1100 | if (!ds->ops->get_rxnfc) | |
1101 | return -EOPNOTSUPP; | |
1102 | ||
d945097b | 1103 | return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs); |
bf9f2648 FF |
1104 | } |
1105 | ||
1106 | static int dsa_slave_set_rxnfc(struct net_device *dev, | |
1107 | struct ethtool_rxnfc *nfc) | |
1108 | { | |
d945097b VD |
1109 | struct dsa_port *dp = dsa_slave_to_port(dev); |
1110 | struct dsa_switch *ds = dp->ds; | |
bf9f2648 FF |
1111 | |
1112 | if (!ds->ops->set_rxnfc) | |
1113 | return -EOPNOTSUPP; | |
1114 | ||
d945097b | 1115 | return ds->ops->set_rxnfc(ds, dp->index, nfc); |
bf9f2648 FF |
1116 | } |
1117 | ||
0336369d BS |
1118 | static int dsa_slave_get_ts_info(struct net_device *dev, |
1119 | struct ethtool_ts_info *ts) | |
1120 | { | |
1121 | struct dsa_slave_priv *p = netdev_priv(dev); | |
1122 | struct dsa_switch *ds = p->dp->ds; | |
1123 | ||
1124 | if (!ds->ops->get_ts_info) | |
1125 | return -EOPNOTSUPP; | |
1126 | ||
1127 | return ds->ops->get_ts_info(ds, p->dp->index, ts); | |
1128 | } | |
1129 | ||
061f6a50 FF |
1130 | static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto, |
1131 | u16 vid) | |
1132 | { | |
1133 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
061f6a50 FF |
1134 | struct bridge_vlan_info info; |
1135 | int ret; | |
1136 | ||
1137 | /* Check for a possible bridge VLAN entry now since there is no | |
1138 | * need to emulate the switchdev prepare + commit phase. | |
1139 | */ | |
1140 | if (dp->bridge_dev) { | |
c5335d73 VD |
1141 | if (!br_vlan_enabled(dp->bridge_dev)) |
1142 | return 0; | |
1143 | ||
061f6a50 FF |
1144 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the |
1145 | * device, respectively the VID is not found, returning | |
1146 | * 0 means success, which is a failure for us here. | |
1147 | */ | |
1148 | ret = br_vlan_get_info(dp->bridge_dev, vid, &info); | |
1149 | if (ret == 0) | |
1150 | return -EBUSY; | |
1151 | } | |
1152 | ||
cf360866 | 1153 | ret = dsa_port_vid_add(dp, vid, 0); |
9b236d2a | 1154 | if (ret) |
cf360866 VD |
1155 | return ret; |
1156 | ||
7e1741b4 | 1157 | ret = dsa_port_vid_add(dp->cpu_dp, vid, 0); |
9b236d2a | 1158 | if (ret) |
7e1741b4 VD |
1159 | return ret; |
1160 | ||
cf360866 | 1161 | return 0; |
061f6a50 FF |
1162 | } |
1163 | ||
1164 | static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, | |
1165 | u16 vid) | |
1166 | { | |
1167 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
061f6a50 FF |
1168 | struct bridge_vlan_info info; |
1169 | int ret; | |
1170 | ||
1171 | /* Check for a possible bridge VLAN entry now since there is no | |
1172 | * need to emulate the switchdev prepare + commit phase. | |
1173 | */ | |
1174 | if (dp->bridge_dev) { | |
c5335d73 VD |
1175 | if (!br_vlan_enabled(dp->bridge_dev)) |
1176 | return 0; | |
1177 | ||
061f6a50 FF |
1178 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the |
1179 | * device, respectively the VID is not found, returning | |
1180 | * 0 means success, which is a failure for us here. | |
1181 | */ | |
1182 | ret = br_vlan_get_info(dp->bridge_dev, vid, &info); | |
1183 | if (ret == 0) | |
1184 | return -EBUSY; | |
1185 | } | |
1186 | ||
7e1741b4 VD |
1187 | /* Do not deprogram the CPU port as it may be shared with other user |
1188 | * ports which can be members of this VLAN as well. | |
1189 | */ | |
9b236d2a | 1190 | return dsa_port_vid_del(dp, vid); |
061f6a50 FF |
1191 | } |
1192 | ||
91da11f8 | 1193 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
91da11f8 | 1194 | .get_drvinfo = dsa_slave_get_drvinfo, |
3d762a0f GR |
1195 | .get_regs_len = dsa_slave_get_regs_len, |
1196 | .get_regs = dsa_slave_get_regs, | |
aab9c406 | 1197 | .nway_reset = dsa_slave_nway_reset, |
c4aef9fc | 1198 | .get_link = ethtool_op_get_link, |
6793abb4 GR |
1199 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
1200 | .get_eeprom = dsa_slave_get_eeprom, | |
1201 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
1202 | .get_strings = dsa_slave_get_strings, |
1203 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
1204 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
1205 | .set_wol = dsa_slave_set_wol, |
1206 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
1207 | .set_eee = dsa_slave_set_eee, |
1208 | .get_eee = dsa_slave_get_eee, | |
aab9c406 FF |
1209 | .get_link_ksettings = dsa_slave_get_link_ksettings, |
1210 | .set_link_ksettings = dsa_slave_set_link_ksettings, | |
a2a1a13b HK |
1211 | .get_pauseparam = dsa_slave_get_pauseparam, |
1212 | .set_pauseparam = dsa_slave_set_pauseparam, | |
bf9f2648 FF |
1213 | .get_rxnfc = dsa_slave_get_rxnfc, |
1214 | .set_rxnfc = dsa_slave_set_rxnfc, | |
0336369d | 1215 | .get_ts_info = dsa_slave_get_ts_info, |
91da11f8 LB |
1216 | }; |
1217 | ||
2a93c1a3 FF |
1218 | /* legacy way, bypassing the bridge *****************************************/ |
1219 | int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
1220 | struct net_device *dev, | |
1221 | const unsigned char *addr, u16 vid, | |
87b0984e PM |
1222 | u16 flags, |
1223 | struct netlink_ext_ack *extack) | |
2a93c1a3 FF |
1224 | { |
1225 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1226 | ||
1227 | return dsa_port_fdb_add(dp, addr, vid); | |
1228 | } | |
1229 | ||
1230 | int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
1231 | struct net_device *dev, | |
1232 | const unsigned char *addr, u16 vid) | |
1233 | { | |
1234 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1235 | ||
1236 | return dsa_port_fdb_del(dp, addr, vid); | |
1237 | } | |
1238 | ||
716efee2 JP |
1239 | static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev) |
1240 | { | |
1241 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1242 | ||
1243 | return dp->ds->devlink ? &dp->devlink_port : NULL; | |
1244 | } | |
1245 | ||
3e8a72d1 | 1246 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
1247 | .ndo_open = dsa_slave_open, |
1248 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 1249 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
1250 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
1251 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 1252 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
37b8da1a AS |
1253 | .ndo_fdb_add = dsa_legacy_fdb_add, |
1254 | .ndo_fdb_del = dsa_legacy_fdb_del, | |
2bedde1a | 1255 | .ndo_fdb_dump = dsa_slave_fdb_dump, |
d442ad4a | 1256 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 1257 | .ndo_get_iflink = dsa_slave_get_iflink, |
04ff53f9 FF |
1258 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1259 | .ndo_netpoll_setup = dsa_slave_netpoll_setup, | |
1260 | .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, | |
1261 | .ndo_poll_controller = dsa_slave_poll_controller, | |
1262 | #endif | |
44bb765c | 1263 | .ndo_get_phys_port_name = dsa_slave_get_phys_port_name, |
f50f2127 | 1264 | .ndo_setup_tc = dsa_slave_setup_tc, |
f613ed66 | 1265 | .ndo_get_stats64 = dsa_slave_get_stats64, |
929d6c14 | 1266 | .ndo_get_port_parent_id = dsa_slave_get_port_parent_id, |
061f6a50 FF |
1267 | .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid, |
1268 | .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid, | |
716efee2 | 1269 | .ndo_get_devlink_port = dsa_slave_get_devlink_port, |
98237d43 SF |
1270 | }; |
1271 | ||
f37db85d FF |
1272 | static struct device_type dsa_type = { |
1273 | .name = "dsa", | |
1274 | }; | |
1275 | ||
aab9c406 FF |
1276 | void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up) |
1277 | { | |
1278 | const struct dsa_port *dp = dsa_to_port(ds, port); | |
1279 | ||
1280 | phylink_mac_change(dp->pl, up); | |
1281 | } | |
1282 | EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change); | |
1283 | ||
1284 | static void dsa_slave_phylink_fixed_state(struct net_device *dev, | |
1285 | struct phylink_link_state *state) | |
1286 | { | |
1287 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1288 | struct dsa_switch *ds = dp->ds; | |
1289 | ||
1290 | /* No need to check that this operation is valid, the callback would | |
1291 | * not be called if it was not. | |
1292 | */ | |
1293 | ds->ops->phylink_fixed_state(ds, dp->index, state); | |
ce31b31c FF |
1294 | } |
1295 | ||
91da11f8 | 1296 | /* slave device setup *******************************************************/ |
4fa7b718 | 1297 | static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr) |
c305c165 | 1298 | { |
d945097b | 1299 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
d945097b | 1300 | struct dsa_switch *ds = dp->ds; |
c305c165 | 1301 | |
0115dcd1 VD |
1302 | slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr); |
1303 | if (!slave_dev->phydev) { | |
d25b8e74 | 1304 | netdev_err(slave_dev, "no phy at %d\n", addr); |
c305c165 | 1305 | return -ENODEV; |
d25b8e74 | 1306 | } |
c305c165 | 1307 | |
aab9c406 | 1308 | return phylink_connect_phy(dp->pl, slave_dev->phydev); |
11d8f3dd | 1309 | } |
11d8f3dd | 1310 | |
4fa7b718 | 1311 | static int dsa_slave_phy_setup(struct net_device *slave_dev) |
0d8bcdd3 | 1312 | { |
d945097b | 1313 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
d945097b VD |
1314 | struct device_node *port_dn = dp->dn; |
1315 | struct dsa_switch *ds = dp->ds; | |
6819563e | 1316 | u32 phy_flags = 0; |
19334920 | 1317 | int mode, ret; |
0d8bcdd3 | 1318 | |
19334920 GR |
1319 | mode = of_get_phy_mode(port_dn); |
1320 | if (mode < 0) | |
1321 | mode = PHY_INTERFACE_MODE_NA; | |
0d8bcdd3 | 1322 | |
44cc27e4 IC |
1323 | dp->pl_config.dev = &slave_dev->dev; |
1324 | dp->pl_config.type = PHYLINK_NETDEV; | |
1325 | ||
1326 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode, | |
77373d49 | 1327 | &dsa_port_phylink_mac_ops); |
aab9c406 FF |
1328 | if (IS_ERR(dp->pl)) { |
1329 | netdev_err(slave_dev, | |
1330 | "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
1331 | return PTR_ERR(dp->pl); | |
0d8bcdd3 FF |
1332 | } |
1333 | ||
aab9c406 FF |
1334 | /* Register only if the switch provides such a callback, since this |
1335 | * callback takes precedence over polling the link GPIO in PHYLINK | |
1336 | * (see phylink_get_fixed_state). | |
1337 | */ | |
1338 | if (ds->ops->phylink_fixed_state) | |
1339 | phylink_fixed_state_cb(dp->pl, dsa_slave_phylink_fixed_state); | |
1340 | ||
9d490b4e | 1341 | if (ds->ops->get_phy_flags) |
d945097b | 1342 | phy_flags = ds->ops->get_phy_flags(ds, dp->index); |
6819563e | 1343 | |
aab9c406 | 1344 | ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags); |
6146dd45 VO |
1345 | if (ret == -ENODEV && ds->slave_mii_bus) { |
1346 | /* We could not connect to a designated PHY or SFP, so try to | |
1347 | * use the switch internal MDIO bus instead | |
aab9c406 | 1348 | */ |
d945097b | 1349 | ret = dsa_slave_phy_connect(slave_dev, dp->index); |
d25b8e74 | 1350 | if (ret) { |
aab9c406 FF |
1351 | netdev_err(slave_dev, |
1352 | "failed to connect to port %d: %d\n", | |
d945097b | 1353 | dp->index, ret); |
aab9c406 | 1354 | phylink_destroy(dp->pl); |
c305c165 | 1355 | return ret; |
d25b8e74 | 1356 | } |
b31f65fb | 1357 | } |
9697f1cd | 1358 | |
6146dd45 | 1359 | return ret; |
0d8bcdd3 FF |
1360 | } |
1361 | ||
24462549 FF |
1362 | int dsa_slave_suspend(struct net_device *slave_dev) |
1363 | { | |
aab9c406 | 1364 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
24462549 | 1365 | |
a94c689e FF |
1366 | if (!netif_running(slave_dev)) |
1367 | return 0; | |
1368 | ||
97a69a0d VO |
1369 | cancel_work_sync(&dp->xmit_work); |
1370 | skb_queue_purge(&dp->xmit_queue); | |
1371 | ||
f154be24 FF |
1372 | netif_device_detach(slave_dev); |
1373 | ||
aab9c406 FF |
1374 | rtnl_lock(); |
1375 | phylink_stop(dp->pl); | |
1376 | rtnl_unlock(); | |
24462549 FF |
1377 | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | int dsa_slave_resume(struct net_device *slave_dev) | |
1382 | { | |
aab9c406 FF |
1383 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
1384 | ||
a94c689e FF |
1385 | if (!netif_running(slave_dev)) |
1386 | return 0; | |
1387 | ||
24462549 FF |
1388 | netif_device_attach(slave_dev); |
1389 | ||
aab9c406 FF |
1390 | rtnl_lock(); |
1391 | phylink_start(dp->pl); | |
1392 | rtnl_unlock(); | |
24462549 FF |
1393 | |
1394 | return 0; | |
1395 | } | |
1396 | ||
6158eaa7 VD |
1397 | static void dsa_slave_notify(struct net_device *dev, unsigned long val) |
1398 | { | |
d0006b00 | 1399 | struct net_device *master = dsa_slave_to_master(dev); |
d945097b | 1400 | struct dsa_port *dp = dsa_slave_to_port(dev); |
6158eaa7 VD |
1401 | struct dsa_notifier_register_info rinfo = { |
1402 | .switch_number = dp->ds->index, | |
1403 | .port_number = dp->index, | |
1404 | .master = master, | |
1405 | .info.dev = dev, | |
1406 | }; | |
1407 | ||
1408 | call_dsa_notifiers(val, dev, &rinfo.info); | |
1409 | } | |
1410 | ||
951259aa | 1411 | int dsa_slave_create(struct dsa_port *port) |
91da11f8 | 1412 | { |
24a9332a | 1413 | const struct dsa_port *cpu_dp = port->cpu_dp; |
f8b8b1cd | 1414 | struct net_device *master = cpu_dp->master; |
4cfbf09c | 1415 | struct dsa_switch *ds = port->ds; |
951259aa | 1416 | const char *name = port->name; |
91da11f8 LB |
1417 | struct net_device *slave_dev; |
1418 | struct dsa_slave_priv *p; | |
1419 | int ret; | |
1420 | ||
55199df6 FF |
1421 | if (!ds->num_tx_queues) |
1422 | ds->num_tx_queues = 1; | |
1423 | ||
1424 | slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name, | |
1425 | NET_NAME_UNKNOWN, ether_setup, | |
1426 | ds->num_tx_queues, 1); | |
91da11f8 | 1427 | if (slave_dev == NULL) |
d87d6f44 | 1428 | return -ENOMEM; |
91da11f8 | 1429 | |
9b236d2a VO |
1430 | slave_dev->features = master->vlan_features | NETIF_F_HW_TC; |
1431 | if (ds->ops->port_vlan_add && ds->ops->port_vlan_del) | |
1432 | slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; | |
f50f2127 | 1433 | slave_dev->hw_features |= NETIF_F_HW_TC; |
7ad24ea4 | 1434 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
4974f9b7 | 1435 | if (!IS_ERR_OR_NULL(port->mac)) |
a2c7023f XS |
1436 | ether_addr_copy(slave_dev->dev_addr, port->mac); |
1437 | else | |
1438 | eth_hw_addr_inherit(slave_dev, master); | |
0a5f107b | 1439 | slave_dev->priv_flags |= IFF_NO_QUEUE; |
3e8a72d1 | 1440 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
8b1efc0f JW |
1441 | slave_dev->min_mtu = 0; |
1442 | slave_dev->max_mtu = ETH_MAX_MTU; | |
f37db85d | 1443 | SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); |
d442ad4a | 1444 | |
4cfbf09c VD |
1445 | SET_NETDEV_DEV(slave_dev, port->ds->dev); |
1446 | slave_dev->dev.of_node = port->dn; | |
5075314e AD |
1447 | slave_dev->vlan_features = master->vlan_features; |
1448 | ||
1449 | p = netdev_priv(slave_dev); | |
5f6b4e14 FF |
1450 | p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1451 | if (!p->stats64) { | |
1452 | free_netdev(slave_dev); | |
1453 | return -ENOMEM; | |
1454 | } | |
4cfbf09c | 1455 | p->dp = port; |
f50f2127 | 1456 | INIT_LIST_HEAD(&p->mall_tc_list); |
97a69a0d VO |
1457 | INIT_WORK(&port->xmit_work, dsa_port_xmit_work); |
1458 | skb_queue_head_init(&port->xmit_queue); | |
15240248 | 1459 | p->xmit = cpu_dp->tag_ops->xmit; |
f8b8b1cd | 1460 | port->slave = slave_dev; |
91da11f8 LB |
1461 | |
1462 | netif_carrier_off(slave_dev); | |
1463 | ||
4fa7b718 | 1464 | ret = dsa_slave_phy_setup(slave_dev); |
0071f56e AL |
1465 | if (ret) { |
1466 | netdev_err(master, "error %d setting up slave phy\n", ret); | |
e804441c FF |
1467 | goto out_free; |
1468 | } | |
1469 | ||
6158eaa7 | 1470 | dsa_slave_notify(slave_dev, DSA_PORT_REGISTER); |
60724d4b | 1471 | |
e804441c FF |
1472 | ret = register_netdev(slave_dev); |
1473 | if (ret) { | |
1474 | netdev_err(master, "error %d registering interface %s\n", | |
1475 | ret, slave_dev->name); | |
1476 | goto out_phy; | |
0071f56e AL |
1477 | } |
1478 | ||
d87d6f44 | 1479 | return 0; |
e804441c FF |
1480 | |
1481 | out_phy: | |
aab9c406 FF |
1482 | rtnl_lock(); |
1483 | phylink_disconnect_phy(p->dp->pl); | |
1484 | rtnl_unlock(); | |
1485 | phylink_destroy(p->dp->pl); | |
e804441c FF |
1486 | out_free: |
1487 | free_percpu(p->stats64); | |
1488 | free_netdev(slave_dev); | |
f8b8b1cd | 1489 | port->slave = NULL; |
e804441c | 1490 | return ret; |
91da11f8 | 1491 | } |
b73adef6 | 1492 | |
cda5c15b NA |
1493 | void dsa_slave_destroy(struct net_device *slave_dev) |
1494 | { | |
d945097b | 1495 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
cda5c15b NA |
1496 | struct dsa_slave_priv *p = netdev_priv(slave_dev); |
1497 | ||
1498 | netif_carrier_off(slave_dev); | |
aab9c406 FF |
1499 | rtnl_lock(); |
1500 | phylink_disconnect_phy(dp->pl); | |
1501 | rtnl_unlock(); | |
881eadab | 1502 | |
6158eaa7 | 1503 | dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER); |
cda5c15b | 1504 | unregister_netdev(slave_dev); |
aab9c406 | 1505 | phylink_destroy(dp->pl); |
5f6b4e14 | 1506 | free_percpu(p->stats64); |
cda5c15b NA |
1507 | free_netdev(slave_dev); |
1508 | } | |
1509 | ||
f3b78049 | 1510 | static bool dsa_slave_dev_check(const struct net_device *dev) |
b73adef6 FF |
1511 | { |
1512 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
1513 | } | |
1514 | ||
8e92ab3a VD |
1515 | static int dsa_slave_changeupper(struct net_device *dev, |
1516 | struct netdev_notifier_changeupper_info *info) | |
b73adef6 | 1517 | { |
d945097b | 1518 | struct dsa_port *dp = dsa_slave_to_port(dev); |
8e92ab3a | 1519 | int err = NOTIFY_DONE; |
b73adef6 | 1520 | |
8e92ab3a VD |
1521 | if (netif_is_bridge_master(info->upper_dev)) { |
1522 | if (info->linking) { | |
17d7802b | 1523 | err = dsa_port_bridge_join(dp, info->upper_dev); |
8e92ab3a VD |
1524 | err = notifier_from_errno(err); |
1525 | } else { | |
17d7802b | 1526 | dsa_port_bridge_leave(dp, info->upper_dev); |
8e92ab3a | 1527 | err = NOTIFY_OK; |
6debb68a | 1528 | } |
6debb68a | 1529 | } |
b73adef6 | 1530 | |
8e92ab3a | 1531 | return err; |
6debb68a | 1532 | } |
b73adef6 | 1533 | |
cc1d5bda FF |
1534 | static int dsa_slave_upper_vlan_check(struct net_device *dev, |
1535 | struct netdev_notifier_changeupper_info * | |
1536 | info) | |
1537 | { | |
1538 | struct netlink_ext_ack *ext_ack; | |
1539 | struct net_device *slave; | |
1540 | struct dsa_port *dp; | |
1541 | ||
1542 | ext_ack = netdev_notifier_info_to_extack(&info->info); | |
1543 | ||
1544 | if (!is_vlan_dev(dev)) | |
1545 | return NOTIFY_DONE; | |
1546 | ||
1547 | slave = vlan_dev_real_dev(dev); | |
1548 | if (!dsa_slave_dev_check(slave)) | |
1549 | return NOTIFY_DONE; | |
1550 | ||
1551 | dp = dsa_slave_to_port(slave); | |
1552 | if (!dp->bridge_dev) | |
1553 | return NOTIFY_DONE; | |
1554 | ||
1555 | /* Deny enslaving a VLAN device into a VLAN-aware bridge */ | |
1556 | if (br_vlan_enabled(dp->bridge_dev) && | |
1557 | netif_is_bridge_master(info->upper_dev) && info->linking) { | |
1558 | NL_SET_ERR_MSG_MOD(ext_ack, | |
1559 | "Cannot enslave VLAN device into VLAN aware bridge"); | |
1560 | return notifier_from_errno(-EINVAL); | |
1561 | } | |
1562 | ||
1563 | return NOTIFY_DONE; | |
1564 | } | |
1565 | ||
88e4f0ca VD |
1566 | static int dsa_slave_netdevice_event(struct notifier_block *nb, |
1567 | unsigned long event, void *ptr) | |
6debb68a VD |
1568 | { |
1569 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
1570 | ||
cc1d5bda FF |
1571 | if (event == NETDEV_CHANGEUPPER) { |
1572 | if (!dsa_slave_dev_check(dev)) | |
1573 | return dsa_slave_upper_vlan_check(dev, ptr); | |
8e92ab3a | 1574 | |
8e92ab3a | 1575 | return dsa_slave_changeupper(dev, ptr); |
cc1d5bda | 1576 | } |
b73adef6 | 1577 | |
b73adef6 FF |
1578 | return NOTIFY_DONE; |
1579 | } | |
88e4f0ca | 1580 | |
c9eb3e0f AS |
1581 | struct dsa_switchdev_event_work { |
1582 | struct work_struct work; | |
1583 | struct switchdev_notifier_fdb_info fdb_info; | |
1584 | struct net_device *dev; | |
1585 | unsigned long event; | |
1586 | }; | |
1587 | ||
1588 | static void dsa_slave_switchdev_event_work(struct work_struct *work) | |
1589 | { | |
1590 | struct dsa_switchdev_event_work *switchdev_work = | |
1591 | container_of(work, struct dsa_switchdev_event_work, work); | |
1592 | struct net_device *dev = switchdev_work->dev; | |
1593 | struct switchdev_notifier_fdb_info *fdb_info; | |
d945097b | 1594 | struct dsa_port *dp = dsa_slave_to_port(dev); |
c9eb3e0f AS |
1595 | int err; |
1596 | ||
1597 | rtnl_lock(); | |
1598 | switch (switchdev_work->event) { | |
1599 | case SWITCHDEV_FDB_ADD_TO_DEVICE: | |
1600 | fdb_info = &switchdev_work->fdb_info; | |
a37fb855 VD |
1601 | if (!fdb_info->added_by_user) |
1602 | break; | |
1603 | ||
d945097b | 1604 | err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid); |
c9eb3e0f AS |
1605 | if (err) { |
1606 | netdev_dbg(dev, "fdb add failed err=%d\n", err); | |
1607 | break; | |
1608 | } | |
e9ba0fbc | 1609 | fdb_info->offloaded = true; |
c9eb3e0f | 1610 | call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, |
6685987c | 1611 | &fdb_info->info, NULL); |
c9eb3e0f AS |
1612 | break; |
1613 | ||
1614 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
1615 | fdb_info = &switchdev_work->fdb_info; | |
a37fb855 VD |
1616 | if (!fdb_info->added_by_user) |
1617 | break; | |
1618 | ||
d945097b | 1619 | err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid); |
c9eb3e0f AS |
1620 | if (err) { |
1621 | netdev_dbg(dev, "fdb del failed err=%d\n", err); | |
1622 | dev_close(dev); | |
1623 | } | |
1624 | break; | |
1625 | } | |
1626 | rtnl_unlock(); | |
1627 | ||
1628 | kfree(switchdev_work->fdb_info.addr); | |
1629 | kfree(switchdev_work); | |
1630 | dev_put(dev); | |
1631 | } | |
1632 | ||
1633 | static int | |
1634 | dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work * | |
1635 | switchdev_work, | |
1636 | const struct switchdev_notifier_fdb_info * | |
1637 | fdb_info) | |
1638 | { | |
1639 | memcpy(&switchdev_work->fdb_info, fdb_info, | |
1640 | sizeof(switchdev_work->fdb_info)); | |
1641 | switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); | |
1642 | if (!switchdev_work->fdb_info.addr) | |
1643 | return -ENOMEM; | |
1644 | ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, | |
1645 | fdb_info->addr); | |
1646 | return 0; | |
1647 | } | |
1648 | ||
1649 | /* Called under rcu_read_lock() */ | |
1650 | static int dsa_slave_switchdev_event(struct notifier_block *unused, | |
1651 | unsigned long event, void *ptr) | |
1652 | { | |
1653 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
1654 | struct dsa_switchdev_event_work *switchdev_work; | |
79b139f4 VD |
1655 | int err; |
1656 | ||
1657 | if (event == SWITCHDEV_PORT_ATTR_SET) { | |
1658 | err = switchdev_handle_port_attr_set(dev, ptr, | |
1659 | dsa_slave_dev_check, | |
1660 | dsa_slave_port_attr_set); | |
1661 | return notifier_from_errno(err); | |
1662 | } | |
c9eb3e0f AS |
1663 | |
1664 | if (!dsa_slave_dev_check(dev)) | |
1665 | return NOTIFY_DONE; | |
1666 | ||
1667 | switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); | |
1668 | if (!switchdev_work) | |
1669 | return NOTIFY_BAD; | |
1670 | ||
1671 | INIT_WORK(&switchdev_work->work, | |
1672 | dsa_slave_switchdev_event_work); | |
1673 | switchdev_work->dev = dev; | |
1674 | switchdev_work->event = event; | |
1675 | ||
1676 | switch (event) { | |
1677 | case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ | |
1678 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
a37fb855 | 1679 | if (dsa_slave_switchdev_fdb_work_init(switchdev_work, ptr)) |
c9eb3e0f AS |
1680 | goto err_fdb_work_init; |
1681 | dev_hold(dev); | |
1682 | break; | |
1683 | default: | |
1684 | kfree(switchdev_work); | |
1685 | return NOTIFY_DONE; | |
1686 | } | |
1687 | ||
1688 | dsa_schedule_work(&switchdev_work->work); | |
1689 | return NOTIFY_OK; | |
1690 | ||
1691 | err_fdb_work_init: | |
1692 | kfree(switchdev_work); | |
1693 | return NOTIFY_BAD; | |
1694 | } | |
1695 | ||
2b239f67 PM |
1696 | static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused, |
1697 | unsigned long event, void *ptr) | |
1698 | { | |
1699 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
79b139f4 | 1700 | int err; |
2b239f67 PM |
1701 | |
1702 | switch (event) { | |
79b139f4 VD |
1703 | case SWITCHDEV_PORT_OBJ_ADD: |
1704 | err = switchdev_handle_port_obj_add(dev, ptr, | |
1705 | dsa_slave_dev_check, | |
1706 | dsa_slave_port_obj_add); | |
1707 | return notifier_from_errno(err); | |
2b239f67 | 1708 | case SWITCHDEV_PORT_OBJ_DEL: |
79b139f4 VD |
1709 | err = switchdev_handle_port_obj_del(dev, ptr, |
1710 | dsa_slave_dev_check, | |
1711 | dsa_slave_port_obj_del); | |
1712 | return notifier_from_errno(err); | |
9ed1eced | 1713 | case SWITCHDEV_PORT_ATTR_SET: |
79b139f4 VD |
1714 | err = switchdev_handle_port_attr_set(dev, ptr, |
1715 | dsa_slave_dev_check, | |
1716 | dsa_slave_port_attr_set); | |
1717 | return notifier_from_errno(err); | |
2b239f67 PM |
1718 | } |
1719 | ||
1720 | return NOTIFY_DONE; | |
1721 | } | |
1722 | ||
88e4f0ca | 1723 | static struct notifier_block dsa_slave_nb __read_mostly = { |
c9eb3e0f AS |
1724 | .notifier_call = dsa_slave_netdevice_event, |
1725 | }; | |
1726 | ||
1727 | static struct notifier_block dsa_slave_switchdev_notifier = { | |
1728 | .notifier_call = dsa_slave_switchdev_event, | |
88e4f0ca VD |
1729 | }; |
1730 | ||
2b239f67 PM |
1731 | static struct notifier_block dsa_slave_switchdev_blocking_notifier = { |
1732 | .notifier_call = dsa_slave_switchdev_blocking_event, | |
1733 | }; | |
1734 | ||
88e4f0ca VD |
1735 | int dsa_slave_register_notifier(void) |
1736 | { | |
2b239f67 | 1737 | struct notifier_block *nb; |
c9eb3e0f AS |
1738 | int err; |
1739 | ||
1740 | err = register_netdevice_notifier(&dsa_slave_nb); | |
1741 | if (err) | |
1742 | return err; | |
1743 | ||
1744 | err = register_switchdev_notifier(&dsa_slave_switchdev_notifier); | |
1745 | if (err) | |
1746 | goto err_switchdev_nb; | |
1747 | ||
2b239f67 PM |
1748 | nb = &dsa_slave_switchdev_blocking_notifier; |
1749 | err = register_switchdev_blocking_notifier(nb); | |
1750 | if (err) | |
1751 | goto err_switchdev_blocking_nb; | |
1752 | ||
c9eb3e0f AS |
1753 | return 0; |
1754 | ||
2b239f67 PM |
1755 | err_switchdev_blocking_nb: |
1756 | unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); | |
c9eb3e0f AS |
1757 | err_switchdev_nb: |
1758 | unregister_netdevice_notifier(&dsa_slave_nb); | |
1759 | return err; | |
88e4f0ca VD |
1760 | } |
1761 | ||
1762 | void dsa_slave_unregister_notifier(void) | |
1763 | { | |
2b239f67 | 1764 | struct notifier_block *nb; |
88e4f0ca VD |
1765 | int err; |
1766 | ||
2b239f67 PM |
1767 | nb = &dsa_slave_switchdev_blocking_notifier; |
1768 | err = unregister_switchdev_blocking_notifier(nb); | |
1769 | if (err) | |
1770 | pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err); | |
1771 | ||
c9eb3e0f AS |
1772 | err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); |
1773 | if (err) | |
1774 | pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err); | |
1775 | ||
88e4f0ca VD |
1776 | err = unregister_netdevice_notifier(&dsa_slave_nb); |
1777 | if (err) | |
1778 | pr_err("DSA: failed to unregister slave notifier (%d)\n", err); | |
1779 | } |