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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; | |
35636062 SF |
304 | default: |
305 | ret = -EOPNOTSUPP; | |
306 | break; | |
307 | } | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
ba14d9eb | 312 | static int dsa_slave_port_obj_add(struct net_device *dev, |
648b4a99 | 313 | const struct switchdev_obj *obj, |
79b139f4 VD |
314 | struct switchdev_trans *trans, |
315 | struct netlink_ext_ack *extack) | |
ba14d9eb | 316 | { |
d945097b | 317 | struct dsa_port *dp = dsa_slave_to_port(dev); |
ba14d9eb VD |
318 | int err; |
319 | ||
320 | /* For the prepare phase, ensure the full set of changes is feasable in | |
321 | * one go in order to signal a failure properly. If an operation is not | |
322 | * supported, return -EOPNOTSUPP. | |
323 | */ | |
324 | ||
9e8f4a54 | 325 | switch (obj->id) { |
8df30255 | 326 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
79b139f4 VD |
327 | if (obj->orig_dev != dev) |
328 | return -EOPNOTSUPP; | |
bcebb976 | 329 | err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans); |
8df30255 | 330 | break; |
5f4dbc50 AL |
331 | case SWITCHDEV_OBJ_ID_HOST_MDB: |
332 | /* DSA can directly translate this to a normal MDB add, | |
333 | * but on the CPU port. | |
334 | */ | |
335 | err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj), | |
336 | trans); | |
337 | break; | |
57d80838 | 338 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
79b139f4 VD |
339 | if (obj->orig_dev != dev) |
340 | return -EOPNOTSUPP; | |
01676d12 VD |
341 | err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj), |
342 | trans); | |
11149536 | 343 | break; |
ba14d9eb VD |
344 | default: |
345 | err = -EOPNOTSUPP; | |
346 | break; | |
347 | } | |
348 | ||
349 | return err; | |
350 | } | |
351 | ||
352 | static int dsa_slave_port_obj_del(struct net_device *dev, | |
648b4a99 | 353 | const struct switchdev_obj *obj) |
ba14d9eb | 354 | { |
d945097b | 355 | struct dsa_port *dp = dsa_slave_to_port(dev); |
ba14d9eb VD |
356 | int err; |
357 | ||
9e8f4a54 | 358 | switch (obj->id) { |
8df30255 | 359 | case SWITCHDEV_OBJ_ID_PORT_MDB: |
79b139f4 VD |
360 | if (obj->orig_dev != dev) |
361 | return -EOPNOTSUPP; | |
bcebb976 | 362 | err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); |
8df30255 | 363 | break; |
5f4dbc50 AL |
364 | case SWITCHDEV_OBJ_ID_HOST_MDB: |
365 | /* DSA can directly translate this to a normal MDB add, | |
366 | * but on the CPU port. | |
367 | */ | |
368 | err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj)); | |
369 | break; | |
57d80838 | 370 | case SWITCHDEV_OBJ_ID_PORT_VLAN: |
79b139f4 VD |
371 | if (obj->orig_dev != dev) |
372 | return -EOPNOTSUPP; | |
01676d12 | 373 | err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj)); |
11149536 | 374 | break; |
ba14d9eb VD |
375 | default: |
376 | err = -EOPNOTSUPP; | |
377 | break; | |
378 | } | |
379 | ||
380 | return err; | |
381 | } | |
382 | ||
929d6c14 FF |
383 | static int dsa_slave_get_port_parent_id(struct net_device *dev, |
384 | struct netdev_phys_item_id *ppid) | |
b73adef6 | 385 | { |
d945097b VD |
386 | struct dsa_port *dp = dsa_slave_to_port(dev); |
387 | struct dsa_switch *ds = dp->ds; | |
a42c8e33 | 388 | struct dsa_switch_tree *dst = ds->dst; |
b73adef6 | 389 | |
15b04ace JP |
390 | /* For non-legacy ports, devlink is used and it takes |
391 | * care of the name generation. This ndo implementation | |
392 | * should be removed with legacy support. | |
393 | */ | |
394 | if (dp->ds->devlink) | |
395 | return -EOPNOTSUPP; | |
396 | ||
929d6c14 FF |
397 | ppid->id_len = sizeof(dst->index); |
398 | memcpy(&ppid->id, &dst->index, ppid->id_len); | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
4fa7b718 VD |
403 | static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev, |
404 | struct sk_buff *skb) | |
04ff53f9 FF |
405 | { |
406 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
4fa7b718 VD |
407 | struct dsa_slave_priv *p = netdev_priv(dev); |
408 | ||
04ff53f9 FF |
409 | if (p->netpoll) |
410 | netpoll_send_skb(p->netpoll, skb); | |
411 | #else | |
412 | BUG(); | |
413 | #endif | |
414 | return NETDEV_TX_OK; | |
415 | } | |
416 | ||
90af1059 BS |
417 | static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p, |
418 | struct sk_buff *skb) | |
419 | { | |
420 | struct dsa_switch *ds = p->dp->ds; | |
421 | struct sk_buff *clone; | |
422 | unsigned int type; | |
423 | ||
424 | type = ptp_classify_raw(skb); | |
425 | if (type == PTP_CLASS_NONE) | |
426 | return; | |
427 | ||
428 | if (!ds->ops->port_txtstamp) | |
429 | return; | |
430 | ||
431 | clone = skb_clone_sk(skb); | |
432 | if (!clone) | |
433 | return; | |
434 | ||
146d442c VO |
435 | DSA_SKB_CB(skb)->clone = clone; |
436 | ||
90af1059 BS |
437 | if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type)) |
438 | return; | |
439 | ||
440 | kfree_skb(clone); | |
441 | } | |
442 | ||
97a69a0d VO |
443 | netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev) |
444 | { | |
445 | /* SKB for netpoll still need to be mangled with the protocol-specific | |
446 | * tag to be successfully transmitted | |
447 | */ | |
448 | if (unlikely(netpoll_tx_running(dev))) | |
449 | return dsa_slave_netpoll_send_skb(dev, skb); | |
450 | ||
451 | /* Queue the SKB for transmission on the parent interface, but | |
452 | * do not modify its EtherType | |
453 | */ | |
454 | skb->dev = dsa_slave_to_master(dev); | |
455 | dev_queue_xmit(skb); | |
456 | ||
457 | return NETDEV_TX_OK; | |
458 | } | |
459 | EXPORT_SYMBOL_GPL(dsa_enqueue_skb); | |
460 | ||
3e8a72d1 FF |
461 | static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
462 | { | |
463 | struct dsa_slave_priv *p = netdev_priv(dev); | |
5f6b4e14 | 464 | struct pcpu_sw_netstats *s; |
4ed70ce9 | 465 | struct sk_buff *nskb; |
3e8a72d1 | 466 | |
5f6b4e14 FF |
467 | s = this_cpu_ptr(p->stats64); |
468 | u64_stats_update_begin(&s->syncp); | |
469 | s->tx_packets++; | |
470 | s->tx_bytes += skb->len; | |
471 | u64_stats_update_end(&s->syncp); | |
3e8a72d1 | 472 | |
87671375 | 473 | DSA_SKB_CB(skb)->deferred_xmit = false; |
146d442c | 474 | DSA_SKB_CB(skb)->clone = NULL; |
87671375 | 475 | |
90af1059 BS |
476 | /* Identify PTP protocol packets, clone them, and pass them to the |
477 | * switch driver | |
478 | */ | |
479 | dsa_skb_tx_timestamp(p, skb); | |
480 | ||
fe47d563 VD |
481 | /* Transmit function may have to reallocate the original SKB, |
482 | * in which case it must have freed it. Only free it here on error. | |
483 | */ | |
4ed70ce9 | 484 | nskb = p->xmit(skb, dev); |
fe47d563 | 485 | if (!nskb) { |
97a69a0d VO |
486 | if (!DSA_SKB_CB(skb)->deferred_xmit) |
487 | kfree_skb(skb); | |
4ed70ce9 | 488 | return NETDEV_TX_OK; |
fe47d563 | 489 | } |
5aed85ce | 490 | |
97a69a0d VO |
491 | return dsa_enqueue_skb(nskb, dev); |
492 | } | |
04ff53f9 | 493 | |
97a69a0d VO |
494 | void *dsa_defer_xmit(struct sk_buff *skb, struct net_device *dev) |
495 | { | |
496 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
5aed85ce | 497 | |
97a69a0d VO |
498 | DSA_SKB_CB(skb)->deferred_xmit = true; |
499 | ||
500 | skb_queue_tail(&dp->xmit_queue, skb); | |
501 | schedule_work(&dp->xmit_work); | |
502 | return NULL; | |
503 | } | |
504 | EXPORT_SYMBOL_GPL(dsa_defer_xmit); | |
505 | ||
506 | static void dsa_port_xmit_work(struct work_struct *work) | |
507 | { | |
508 | struct dsa_port *dp = container_of(work, struct dsa_port, xmit_work); | |
509 | struct dsa_switch *ds = dp->ds; | |
510 | struct sk_buff *skb; | |
511 | ||
512 | if (unlikely(!ds->ops->port_deferred_xmit)) | |
513 | return; | |
514 | ||
515 | while ((skb = skb_dequeue(&dp->xmit_queue)) != NULL) | |
516 | ds->ops->port_deferred_xmit(ds, dp->index, skb); | |
5aed85ce FF |
517 | } |
518 | ||
91da11f8 | 519 | /* ethtool operations *******************************************************/ |
91da11f8 | 520 | |
91da11f8 LB |
521 | static void dsa_slave_get_drvinfo(struct net_device *dev, |
522 | struct ethtool_drvinfo *drvinfo) | |
523 | { | |
7826d43f | 524 | strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
7826d43f JP |
525 | strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); |
526 | strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); | |
91da11f8 LB |
527 | } |
528 | ||
3d762a0f GR |
529 | static int dsa_slave_get_regs_len(struct net_device *dev) |
530 | { | |
d945097b VD |
531 | struct dsa_port *dp = dsa_slave_to_port(dev); |
532 | struct dsa_switch *ds = dp->ds; | |
3d762a0f | 533 | |
9d490b4e | 534 | if (ds->ops->get_regs_len) |
d945097b | 535 | return ds->ops->get_regs_len(ds, dp->index); |
3d762a0f GR |
536 | |
537 | return -EOPNOTSUPP; | |
538 | } | |
539 | ||
540 | static void | |
541 | dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) | |
542 | { | |
d945097b VD |
543 | struct dsa_port *dp = dsa_slave_to_port(dev); |
544 | struct dsa_switch *ds = dp->ds; | |
3d762a0f | 545 | |
9d490b4e | 546 | if (ds->ops->get_regs) |
d945097b | 547 | ds->ops->get_regs(ds, dp->index, regs, _p); |
3d762a0f GR |
548 | } |
549 | ||
aab9c406 FF |
550 | static int dsa_slave_nway_reset(struct net_device *dev) |
551 | { | |
552 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
553 | ||
554 | return phylink_ethtool_nway_reset(dp->pl); | |
555 | } | |
556 | ||
6793abb4 GR |
557 | static int dsa_slave_get_eeprom_len(struct net_device *dev) |
558 | { | |
d945097b VD |
559 | struct dsa_port *dp = dsa_slave_to_port(dev); |
560 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 561 | |
0e576044 | 562 | if (ds->cd && ds->cd->eeprom_len) |
ff04955c | 563 | return ds->cd->eeprom_len; |
6793abb4 | 564 | |
9d490b4e VD |
565 | if (ds->ops->get_eeprom_len) |
566 | return ds->ops->get_eeprom_len(ds); | |
6793abb4 GR |
567 | |
568 | return 0; | |
569 | } | |
570 | ||
571 | static int dsa_slave_get_eeprom(struct net_device *dev, | |
572 | struct ethtool_eeprom *eeprom, u8 *data) | |
573 | { | |
d945097b VD |
574 | struct dsa_port *dp = dsa_slave_to_port(dev); |
575 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 576 | |
9d490b4e VD |
577 | if (ds->ops->get_eeprom) |
578 | return ds->ops->get_eeprom(ds, eeprom, data); | |
6793abb4 GR |
579 | |
580 | return -EOPNOTSUPP; | |
581 | } | |
582 | ||
583 | static int dsa_slave_set_eeprom(struct net_device *dev, | |
584 | struct ethtool_eeprom *eeprom, u8 *data) | |
585 | { | |
d945097b VD |
586 | struct dsa_port *dp = dsa_slave_to_port(dev); |
587 | struct dsa_switch *ds = dp->ds; | |
6793abb4 | 588 | |
9d490b4e VD |
589 | if (ds->ops->set_eeprom) |
590 | return ds->ops->set_eeprom(ds, eeprom, data); | |
6793abb4 GR |
591 | |
592 | return -EOPNOTSUPP; | |
593 | } | |
594 | ||
91da11f8 LB |
595 | static void dsa_slave_get_strings(struct net_device *dev, |
596 | uint32_t stringset, uint8_t *data) | |
597 | { | |
d945097b VD |
598 | struct dsa_port *dp = dsa_slave_to_port(dev); |
599 | struct dsa_switch *ds = dp->ds; | |
91da11f8 LB |
600 | |
601 | if (stringset == ETH_SS_STATS) { | |
602 | int len = ETH_GSTRING_LEN; | |
603 | ||
604 | strncpy(data, "tx_packets", len); | |
605 | strncpy(data + len, "tx_bytes", len); | |
606 | strncpy(data + 2 * len, "rx_packets", len); | |
607 | strncpy(data + 3 * len, "rx_bytes", len); | |
9d490b4e | 608 | if (ds->ops->get_strings) |
89f09048 FF |
609 | ds->ops->get_strings(ds, dp->index, stringset, |
610 | data + 4 * len); | |
91da11f8 LB |
611 | } |
612 | } | |
613 | ||
614 | static void dsa_slave_get_ethtool_stats(struct net_device *dev, | |
615 | struct ethtool_stats *stats, | |
616 | uint64_t *data) | |
617 | { | |
d945097b | 618 | struct dsa_port *dp = dsa_slave_to_port(dev); |
91da11f8 | 619 | struct dsa_slave_priv *p = netdev_priv(dev); |
d945097b | 620 | struct dsa_switch *ds = dp->ds; |
5f6b4e14 | 621 | struct pcpu_sw_netstats *s; |
f613ed66 | 622 | unsigned int start; |
5f6b4e14 FF |
623 | int i; |
624 | ||
625 | for_each_possible_cpu(i) { | |
626 | u64 tx_packets, tx_bytes, rx_packets, rx_bytes; | |
627 | ||
628 | s = per_cpu_ptr(p->stats64, i); | |
629 | do { | |
630 | start = u64_stats_fetch_begin_irq(&s->syncp); | |
631 | tx_packets = s->tx_packets; | |
632 | tx_bytes = s->tx_bytes; | |
633 | rx_packets = s->rx_packets; | |
634 | rx_bytes = s->rx_bytes; | |
635 | } while (u64_stats_fetch_retry_irq(&s->syncp, start)); | |
636 | data[0] += tx_packets; | |
637 | data[1] += tx_bytes; | |
638 | data[2] += rx_packets; | |
639 | data[3] += rx_bytes; | |
640 | } | |
9d490b4e | 641 | if (ds->ops->get_ethtool_stats) |
d945097b | 642 | ds->ops->get_ethtool_stats(ds, dp->index, data + 4); |
91da11f8 LB |
643 | } |
644 | ||
645 | static int dsa_slave_get_sset_count(struct net_device *dev, int sset) | |
646 | { | |
d945097b VD |
647 | struct dsa_port *dp = dsa_slave_to_port(dev); |
648 | struct dsa_switch *ds = dp->ds; | |
91da11f8 LB |
649 | |
650 | if (sset == ETH_SS_STATS) { | |
651 | int count; | |
652 | ||
653 | count = 4; | |
9d490b4e | 654 | if (ds->ops->get_sset_count) |
89f09048 | 655 | count += ds->ops->get_sset_count(ds, dp->index, sset); |
91da11f8 LB |
656 | |
657 | return count; | |
658 | } | |
659 | ||
660 | return -EOPNOTSUPP; | |
661 | } | |
662 | ||
19e57c4e FF |
663 | static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
664 | { | |
d945097b VD |
665 | struct dsa_port *dp = dsa_slave_to_port(dev); |
666 | struct dsa_switch *ds = dp->ds; | |
19e57c4e | 667 | |
aab9c406 FF |
668 | phylink_ethtool_get_wol(dp->pl, w); |
669 | ||
9d490b4e | 670 | if (ds->ops->get_wol) |
d945097b | 671 | ds->ops->get_wol(ds, dp->index, w); |
19e57c4e FF |
672 | } |
673 | ||
674 | static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) | |
675 | { | |
d945097b VD |
676 | struct dsa_port *dp = dsa_slave_to_port(dev); |
677 | struct dsa_switch *ds = dp->ds; | |
19e57c4e FF |
678 | int ret = -EOPNOTSUPP; |
679 | ||
aab9c406 FF |
680 | phylink_ethtool_set_wol(dp->pl, w); |
681 | ||
9d490b4e | 682 | if (ds->ops->set_wol) |
d945097b | 683 | ret = ds->ops->set_wol(ds, dp->index, w); |
19e57c4e FF |
684 | |
685 | return ret; | |
686 | } | |
687 | ||
7905288f FF |
688 | static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
689 | { | |
d945097b VD |
690 | struct dsa_port *dp = dsa_slave_to_port(dev); |
691 | struct dsa_switch *ds = dp->ds; | |
7905288f FF |
692 | int ret; |
693 | ||
7b9cc738 | 694 | /* Port's PHY and MAC both need to be EEE capable */ |
00670cb8 | 695 | if (!dev->phydev || !dp->pl) |
7b9cc738 VD |
696 | return -ENODEV; |
697 | ||
08f50061 | 698 | if (!ds->ops->set_mac_eee) |
7905288f FF |
699 | return -EOPNOTSUPP; |
700 | ||
d945097b | 701 | ret = ds->ops->set_mac_eee(ds, dp->index, e); |
7905288f FF |
702 | if (ret) |
703 | return ret; | |
704 | ||
aab9c406 | 705 | return phylink_ethtool_set_eee(dp->pl, e); |
7905288f FF |
706 | } |
707 | ||
708 | static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) | |
709 | { | |
d945097b VD |
710 | struct dsa_port *dp = dsa_slave_to_port(dev); |
711 | struct dsa_switch *ds = dp->ds; | |
7905288f FF |
712 | int ret; |
713 | ||
7b9cc738 | 714 | /* Port's PHY and MAC both need to be EEE capable */ |
00670cb8 | 715 | if (!dev->phydev || !dp->pl) |
7b9cc738 VD |
716 | return -ENODEV; |
717 | ||
08f50061 | 718 | if (!ds->ops->get_mac_eee) |
7905288f FF |
719 | return -EOPNOTSUPP; |
720 | ||
d945097b | 721 | ret = ds->ops->get_mac_eee(ds, dp->index, e); |
7905288f FF |
722 | if (ret) |
723 | return ret; | |
724 | ||
aab9c406 FF |
725 | return phylink_ethtool_get_eee(dp->pl, e); |
726 | } | |
727 | ||
728 | static int dsa_slave_get_link_ksettings(struct net_device *dev, | |
729 | struct ethtool_link_ksettings *cmd) | |
730 | { | |
731 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
732 | ||
733 | return phylink_ethtool_ksettings_get(dp->pl, cmd); | |
734 | } | |
735 | ||
736 | static int dsa_slave_set_link_ksettings(struct net_device *dev, | |
737 | const struct ethtool_link_ksettings *cmd) | |
738 | { | |
739 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
740 | ||
741 | return phylink_ethtool_ksettings_set(dp->pl, cmd); | |
7905288f FF |
742 | } |
743 | ||
04ff53f9 FF |
744 | #ifdef CONFIG_NET_POLL_CONTROLLER |
745 | static int dsa_slave_netpoll_setup(struct net_device *dev, | |
746 | struct netpoll_info *ni) | |
747 | { | |
d0006b00 | 748 | struct net_device *master = dsa_slave_to_master(dev); |
04ff53f9 | 749 | struct dsa_slave_priv *p = netdev_priv(dev); |
04ff53f9 FF |
750 | struct netpoll *netpoll; |
751 | int err = 0; | |
752 | ||
753 | netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); | |
754 | if (!netpoll) | |
755 | return -ENOMEM; | |
756 | ||
757 | err = __netpoll_setup(netpoll, master); | |
758 | if (err) { | |
759 | kfree(netpoll); | |
760 | goto out; | |
761 | } | |
762 | ||
763 | p->netpoll = netpoll; | |
764 | out: | |
765 | return err; | |
766 | } | |
767 | ||
768 | static void dsa_slave_netpoll_cleanup(struct net_device *dev) | |
769 | { | |
770 | struct dsa_slave_priv *p = netdev_priv(dev); | |
771 | struct netpoll *netpoll = p->netpoll; | |
772 | ||
773 | if (!netpoll) | |
774 | return; | |
775 | ||
776 | p->netpoll = NULL; | |
777 | ||
c9fbd71f | 778 | __netpoll_free(netpoll); |
04ff53f9 FF |
779 | } |
780 | ||
781 | static void dsa_slave_poll_controller(struct net_device *dev) | |
782 | { | |
783 | } | |
784 | #endif | |
785 | ||
44bb765c FF |
786 | static int dsa_slave_get_phys_port_name(struct net_device *dev, |
787 | char *name, size_t len) | |
788 | { | |
d945097b | 789 | struct dsa_port *dp = dsa_slave_to_port(dev); |
44bb765c | 790 | |
d484210b JP |
791 | /* For non-legacy ports, devlink is used and it takes |
792 | * care of the name generation. This ndo implementation | |
793 | * should be removed with legacy support. | |
794 | */ | |
795 | if (dp->ds->devlink) | |
796 | return -EOPNOTSUPP; | |
797 | ||
d945097b | 798 | if (snprintf(name, len, "p%d", dp->index) >= len) |
44bb765c | 799 | return -EINVAL; |
3a543ef4 FF |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
f50f2127 | 804 | static struct dsa_mall_tc_entry * |
4fa7b718 | 805 | dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie) |
f50f2127 | 806 | { |
4fa7b718 | 807 | struct dsa_slave_priv *p = netdev_priv(dev); |
f50f2127 FF |
808 | struct dsa_mall_tc_entry *mall_tc_entry; |
809 | ||
810 | list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) | |
811 | if (mall_tc_entry->cookie == cookie) | |
812 | return mall_tc_entry; | |
813 | ||
814 | return NULL; | |
815 | } | |
816 | ||
817 | static int dsa_slave_add_cls_matchall(struct net_device *dev, | |
f50f2127 FF |
818 | struct tc_cls_matchall_offload *cls, |
819 | bool ingress) | |
820 | { | |
d945097b | 821 | struct dsa_port *dp = dsa_slave_to_port(dev); |
f50f2127 FF |
822 | struct dsa_slave_priv *p = netdev_priv(dev); |
823 | struct dsa_mall_tc_entry *mall_tc_entry; | |
5fd9fc4e | 824 | __be16 protocol = cls->common.protocol; |
d945097b | 825 | struct dsa_switch *ds = dp->ds; |
9681e8b3 | 826 | struct flow_action_entry *act; |
d945097b | 827 | struct dsa_port *to_dp; |
f50f2127 | 828 | int err = -EOPNOTSUPP; |
f50f2127 FF |
829 | |
830 | if (!ds->ops->port_mirror_add) | |
831 | return err; | |
832 | ||
9681e8b3 | 833 | if (!flow_offload_has_one_action(&cls->rule->action)) |
f50f2127 FF |
834 | return err; |
835 | ||
9681e8b3 | 836 | act = &cls->rule->action.entries[0]; |
f50f2127 | 837 | |
9681e8b3 | 838 | if (act->id == FLOW_ACTION_MIRRED && protocol == htons(ETH_P_ALL)) { |
f50f2127 FF |
839 | struct dsa_mall_mirror_tc_entry *mirror; |
840 | ||
9681e8b3 | 841 | if (!act->dev) |
f50f2127 FF |
842 | return -EINVAL; |
843 | ||
9681e8b3 | 844 | if (!dsa_slave_dev_check(act->dev)) |
f50f2127 FF |
845 | return -EOPNOTSUPP; |
846 | ||
847 | mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL); | |
848 | if (!mall_tc_entry) | |
849 | return -ENOMEM; | |
850 | ||
851 | mall_tc_entry->cookie = cls->cookie; | |
852 | mall_tc_entry->type = DSA_PORT_MALL_MIRROR; | |
853 | mirror = &mall_tc_entry->mirror; | |
854 | ||
9681e8b3 | 855 | to_dp = dsa_slave_to_port(act->dev); |
f50f2127 | 856 | |
d945097b | 857 | mirror->to_local_port = to_dp->index; |
f50f2127 FF |
858 | mirror->ingress = ingress; |
859 | ||
d945097b | 860 | err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress); |
f50f2127 FF |
861 | if (err) { |
862 | kfree(mall_tc_entry); | |
863 | return err; | |
864 | } | |
865 | ||
866 | list_add_tail(&mall_tc_entry->list, &p->mall_tc_list); | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | static void dsa_slave_del_cls_matchall(struct net_device *dev, | |
873 | struct tc_cls_matchall_offload *cls) | |
874 | { | |
d945097b | 875 | struct dsa_port *dp = dsa_slave_to_port(dev); |
f50f2127 | 876 | struct dsa_mall_tc_entry *mall_tc_entry; |
d945097b | 877 | struct dsa_switch *ds = dp->ds; |
f50f2127 FF |
878 | |
879 | if (!ds->ops->port_mirror_del) | |
880 | return; | |
881 | ||
4fa7b718 | 882 | mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie); |
f50f2127 FF |
883 | if (!mall_tc_entry) |
884 | return; | |
885 | ||
886 | list_del(&mall_tc_entry->list); | |
887 | ||
888 | switch (mall_tc_entry->type) { | |
889 | case DSA_PORT_MALL_MIRROR: | |
d945097b | 890 | ds->ops->port_mirror_del(ds, dp->index, &mall_tc_entry->mirror); |
f50f2127 FF |
891 | break; |
892 | default: | |
893 | WARN_ON(1); | |
894 | } | |
895 | ||
896 | kfree(mall_tc_entry); | |
897 | } | |
898 | ||
3fbae382 | 899 | static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev, |
6b3eb752 JP |
900 | struct tc_cls_matchall_offload *cls, |
901 | bool ingress) | |
f50f2127 | 902 | { |
5fd9fc4e | 903 | if (cls->common.chain_index) |
a5fcf8a6 | 904 | return -EOPNOTSUPP; |
f50f2127 | 905 | |
3fbae382 JP |
906 | switch (cls->command) { |
907 | case TC_CLSMATCHALL_REPLACE: | |
5fd9fc4e | 908 | return dsa_slave_add_cls_matchall(dev, cls, ingress); |
3fbae382 JP |
909 | case TC_CLSMATCHALL_DESTROY: |
910 | dsa_slave_del_cls_matchall(dev, cls); | |
911 | return 0; | |
912 | default: | |
913 | return -EOPNOTSUPP; | |
914 | } | |
915 | } | |
916 | ||
6b3eb752 JP |
917 | static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data, |
918 | void *cb_priv, bool ingress) | |
919 | { | |
920 | struct net_device *dev = cb_priv; | |
921 | ||
44ae12a7 JP |
922 | if (!tc_can_offload(dev)) |
923 | return -EOPNOTSUPP; | |
924 | ||
6b3eb752 JP |
925 | switch (type) { |
926 | case TC_SETUP_CLSMATCHALL: | |
927 | return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress); | |
928 | default: | |
929 | return -EOPNOTSUPP; | |
930 | } | |
931 | } | |
932 | ||
933 | static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type, | |
934 | void *type_data, void *cb_priv) | |
935 | { | |
936 | return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true); | |
937 | } | |
938 | ||
939 | static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type, | |
940 | void *type_data, void *cb_priv) | |
941 | { | |
942 | return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false); | |
943 | } | |
944 | ||
945 | static int dsa_slave_setup_tc_block(struct net_device *dev, | |
946 | struct tc_block_offload *f) | |
947 | { | |
948 | tc_setup_cb_t *cb; | |
949 | ||
950 | if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS) | |
951 | cb = dsa_slave_setup_tc_block_cb_ig; | |
952 | else if (f->binder_type == TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS) | |
953 | cb = dsa_slave_setup_tc_block_cb_eg; | |
954 | else | |
955 | return -EOPNOTSUPP; | |
956 | ||
957 | switch (f->command) { | |
9c0e189e | 958 | case FLOW_BLOCK_BIND: |
60513bd8 | 959 | return tcf_block_cb_register(f->block, cb, dev, dev, f->extack); |
9c0e189e | 960 | case FLOW_BLOCK_UNBIND: |
6b3eb752 JP |
961 | tcf_block_cb_unregister(f->block, cb, dev); |
962 | return 0; | |
963 | default: | |
964 | return -EOPNOTSUPP; | |
965 | } | |
966 | } | |
967 | ||
3fbae382 | 968 | static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 969 | void *type_data) |
3fbae382 | 970 | { |
2572ac53 | 971 | switch (type) { |
6b3eb752 JP |
972 | case TC_SETUP_BLOCK: |
973 | return dsa_slave_setup_tc_block(dev, type_data); | |
f50f2127 | 974 | default: |
a5fcf8a6 | 975 | return -EOPNOTSUPP; |
f50f2127 | 976 | } |
f50f2127 FF |
977 | } |
978 | ||
f613ed66 FF |
979 | static void dsa_slave_get_stats64(struct net_device *dev, |
980 | struct rtnl_link_stats64 *stats) | |
981 | { | |
982 | struct dsa_slave_priv *p = netdev_priv(dev); | |
5f6b4e14 | 983 | struct pcpu_sw_netstats *s; |
f613ed66 | 984 | unsigned int start; |
5f6b4e14 | 985 | int i; |
f613ed66 FF |
986 | |
987 | netdev_stats_to_stats64(stats, &dev->stats); | |
5f6b4e14 FF |
988 | for_each_possible_cpu(i) { |
989 | u64 tx_packets, tx_bytes, rx_packets, rx_bytes; | |
990 | ||
991 | s = per_cpu_ptr(p->stats64, i); | |
992 | do { | |
993 | start = u64_stats_fetch_begin_irq(&s->syncp); | |
994 | tx_packets = s->tx_packets; | |
995 | tx_bytes = s->tx_bytes; | |
996 | rx_packets = s->rx_packets; | |
997 | rx_bytes = s->rx_bytes; | |
998 | } while (u64_stats_fetch_retry_irq(&s->syncp, start)); | |
999 | ||
1000 | stats->tx_packets += tx_packets; | |
1001 | stats->tx_bytes += tx_bytes; | |
1002 | stats->rx_packets += rx_packets; | |
1003 | stats->rx_bytes += rx_bytes; | |
1004 | } | |
f613ed66 FF |
1005 | } |
1006 | ||
bf9f2648 FF |
1007 | static int dsa_slave_get_rxnfc(struct net_device *dev, |
1008 | struct ethtool_rxnfc *nfc, u32 *rule_locs) | |
1009 | { | |
d945097b VD |
1010 | struct dsa_port *dp = dsa_slave_to_port(dev); |
1011 | struct dsa_switch *ds = dp->ds; | |
bf9f2648 FF |
1012 | |
1013 | if (!ds->ops->get_rxnfc) | |
1014 | return -EOPNOTSUPP; | |
1015 | ||
d945097b | 1016 | return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs); |
bf9f2648 FF |
1017 | } |
1018 | ||
1019 | static int dsa_slave_set_rxnfc(struct net_device *dev, | |
1020 | struct ethtool_rxnfc *nfc) | |
1021 | { | |
d945097b VD |
1022 | struct dsa_port *dp = dsa_slave_to_port(dev); |
1023 | struct dsa_switch *ds = dp->ds; | |
bf9f2648 FF |
1024 | |
1025 | if (!ds->ops->set_rxnfc) | |
1026 | return -EOPNOTSUPP; | |
1027 | ||
d945097b | 1028 | return ds->ops->set_rxnfc(ds, dp->index, nfc); |
bf9f2648 FF |
1029 | } |
1030 | ||
0336369d BS |
1031 | static int dsa_slave_get_ts_info(struct net_device *dev, |
1032 | struct ethtool_ts_info *ts) | |
1033 | { | |
1034 | struct dsa_slave_priv *p = netdev_priv(dev); | |
1035 | struct dsa_switch *ds = p->dp->ds; | |
1036 | ||
1037 | if (!ds->ops->get_ts_info) | |
1038 | return -EOPNOTSUPP; | |
1039 | ||
1040 | return ds->ops->get_ts_info(ds, p->dp->index, ts); | |
1041 | } | |
1042 | ||
061f6a50 FF |
1043 | static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto, |
1044 | u16 vid) | |
1045 | { | |
1046 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
061f6a50 FF |
1047 | struct bridge_vlan_info info; |
1048 | int ret; | |
1049 | ||
1050 | /* Check for a possible bridge VLAN entry now since there is no | |
1051 | * need to emulate the switchdev prepare + commit phase. | |
1052 | */ | |
1053 | if (dp->bridge_dev) { | |
1054 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
1055 | * device, respectively the VID is not found, returning | |
1056 | * 0 means success, which is a failure for us here. | |
1057 | */ | |
1058 | ret = br_vlan_get_info(dp->bridge_dev, vid, &info); | |
1059 | if (ret == 0) | |
1060 | return -EBUSY; | |
1061 | } | |
1062 | ||
314f76d7 VO |
1063 | /* This API only allows programming tagged, non-PVID VIDs */ |
1064 | return dsa_port_vid_add(dp, vid, 0); | |
061f6a50 FF |
1065 | } |
1066 | ||
1067 | static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, | |
1068 | u16 vid) | |
1069 | { | |
1070 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
061f6a50 FF |
1071 | struct bridge_vlan_info info; |
1072 | int ret; | |
1073 | ||
1074 | /* Check for a possible bridge VLAN entry now since there is no | |
1075 | * need to emulate the switchdev prepare + commit phase. | |
1076 | */ | |
1077 | if (dp->bridge_dev) { | |
1078 | /* br_vlan_get_info() returns -EINVAL or -ENOENT if the | |
1079 | * device, respectively the VID is not found, returning | |
1080 | * 0 means success, which is a failure for us here. | |
1081 | */ | |
1082 | ret = br_vlan_get_info(dp->bridge_dev, vid, &info); | |
1083 | if (ret == 0) | |
1084 | return -EBUSY; | |
1085 | } | |
1086 | ||
314f76d7 | 1087 | ret = dsa_port_vid_del(dp, vid); |
061f6a50 FF |
1088 | if (ret == -EOPNOTSUPP) |
1089 | ret = 0; | |
1090 | ||
1091 | return ret; | |
1092 | } | |
1093 | ||
91da11f8 | 1094 | static const struct ethtool_ops dsa_slave_ethtool_ops = { |
91da11f8 | 1095 | .get_drvinfo = dsa_slave_get_drvinfo, |
3d762a0f GR |
1096 | .get_regs_len = dsa_slave_get_regs_len, |
1097 | .get_regs = dsa_slave_get_regs, | |
aab9c406 | 1098 | .nway_reset = dsa_slave_nway_reset, |
c4aef9fc | 1099 | .get_link = ethtool_op_get_link, |
6793abb4 GR |
1100 | .get_eeprom_len = dsa_slave_get_eeprom_len, |
1101 | .get_eeprom = dsa_slave_get_eeprom, | |
1102 | .set_eeprom = dsa_slave_set_eeprom, | |
91da11f8 LB |
1103 | .get_strings = dsa_slave_get_strings, |
1104 | .get_ethtool_stats = dsa_slave_get_ethtool_stats, | |
1105 | .get_sset_count = dsa_slave_get_sset_count, | |
19e57c4e FF |
1106 | .set_wol = dsa_slave_set_wol, |
1107 | .get_wol = dsa_slave_get_wol, | |
7905288f FF |
1108 | .set_eee = dsa_slave_set_eee, |
1109 | .get_eee = dsa_slave_get_eee, | |
aab9c406 FF |
1110 | .get_link_ksettings = dsa_slave_get_link_ksettings, |
1111 | .set_link_ksettings = dsa_slave_set_link_ksettings, | |
bf9f2648 FF |
1112 | .get_rxnfc = dsa_slave_get_rxnfc, |
1113 | .set_rxnfc = dsa_slave_set_rxnfc, | |
0336369d | 1114 | .get_ts_info = dsa_slave_get_ts_info, |
91da11f8 LB |
1115 | }; |
1116 | ||
2a93c1a3 FF |
1117 | /* legacy way, bypassing the bridge *****************************************/ |
1118 | int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], | |
1119 | struct net_device *dev, | |
1120 | const unsigned char *addr, u16 vid, | |
87b0984e PM |
1121 | u16 flags, |
1122 | struct netlink_ext_ack *extack) | |
2a93c1a3 FF |
1123 | { |
1124 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1125 | ||
1126 | return dsa_port_fdb_add(dp, addr, vid); | |
1127 | } | |
1128 | ||
1129 | int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], | |
1130 | struct net_device *dev, | |
1131 | const unsigned char *addr, u16 vid) | |
1132 | { | |
1133 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1134 | ||
1135 | return dsa_port_fdb_del(dp, addr, vid); | |
1136 | } | |
1137 | ||
716efee2 JP |
1138 | static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev) |
1139 | { | |
1140 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1141 | ||
1142 | return dp->ds->devlink ? &dp->devlink_port : NULL; | |
1143 | } | |
1144 | ||
3e8a72d1 | 1145 | static const struct net_device_ops dsa_slave_netdev_ops = { |
d442ad4a SH |
1146 | .ndo_open = dsa_slave_open, |
1147 | .ndo_stop = dsa_slave_close, | |
3e8a72d1 | 1148 | .ndo_start_xmit = dsa_slave_xmit, |
d442ad4a SH |
1149 | .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
1150 | .ndo_set_rx_mode = dsa_slave_set_rx_mode, | |
d442ad4a | 1151 | .ndo_set_mac_address = dsa_slave_set_mac_address, |
37b8da1a AS |
1152 | .ndo_fdb_add = dsa_legacy_fdb_add, |
1153 | .ndo_fdb_del = dsa_legacy_fdb_del, | |
2bedde1a | 1154 | .ndo_fdb_dump = dsa_slave_fdb_dump, |
d442ad4a | 1155 | .ndo_do_ioctl = dsa_slave_ioctl, |
abd2be00 | 1156 | .ndo_get_iflink = dsa_slave_get_iflink, |
04ff53f9 FF |
1157 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1158 | .ndo_netpoll_setup = dsa_slave_netpoll_setup, | |
1159 | .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, | |
1160 | .ndo_poll_controller = dsa_slave_poll_controller, | |
1161 | #endif | |
44bb765c | 1162 | .ndo_get_phys_port_name = dsa_slave_get_phys_port_name, |
f50f2127 | 1163 | .ndo_setup_tc = dsa_slave_setup_tc, |
f613ed66 | 1164 | .ndo_get_stats64 = dsa_slave_get_stats64, |
929d6c14 | 1165 | .ndo_get_port_parent_id = dsa_slave_get_port_parent_id, |
061f6a50 FF |
1166 | .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid, |
1167 | .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid, | |
716efee2 | 1168 | .ndo_get_devlink_port = dsa_slave_get_devlink_port, |
98237d43 SF |
1169 | }; |
1170 | ||
f37db85d FF |
1171 | static struct device_type dsa_type = { |
1172 | .name = "dsa", | |
1173 | }; | |
1174 | ||
aab9c406 FF |
1175 | void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up) |
1176 | { | |
1177 | const struct dsa_port *dp = dsa_to_port(ds, port); | |
1178 | ||
1179 | phylink_mac_change(dp->pl, up); | |
1180 | } | |
1181 | EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change); | |
1182 | ||
1183 | static void dsa_slave_phylink_fixed_state(struct net_device *dev, | |
1184 | struct phylink_link_state *state) | |
1185 | { | |
1186 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
1187 | struct dsa_switch *ds = dp->ds; | |
1188 | ||
1189 | /* No need to check that this operation is valid, the callback would | |
1190 | * not be called if it was not. | |
1191 | */ | |
1192 | ds->ops->phylink_fixed_state(ds, dp->index, state); | |
ce31b31c FF |
1193 | } |
1194 | ||
91da11f8 | 1195 | /* slave device setup *******************************************************/ |
4fa7b718 | 1196 | static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr) |
c305c165 | 1197 | { |
d945097b | 1198 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
d945097b | 1199 | struct dsa_switch *ds = dp->ds; |
c305c165 | 1200 | |
0115dcd1 VD |
1201 | slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr); |
1202 | if (!slave_dev->phydev) { | |
d25b8e74 | 1203 | netdev_err(slave_dev, "no phy at %d\n", addr); |
c305c165 | 1204 | return -ENODEV; |
d25b8e74 | 1205 | } |
c305c165 | 1206 | |
aab9c406 | 1207 | return phylink_connect_phy(dp->pl, slave_dev->phydev); |
11d8f3dd | 1208 | } |
11d8f3dd | 1209 | |
4fa7b718 | 1210 | static int dsa_slave_phy_setup(struct net_device *slave_dev) |
0d8bcdd3 | 1211 | { |
d945097b | 1212 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
d945097b VD |
1213 | struct device_node *port_dn = dp->dn; |
1214 | struct dsa_switch *ds = dp->ds; | |
6819563e | 1215 | u32 phy_flags = 0; |
19334920 | 1216 | int mode, ret; |
0d8bcdd3 | 1217 | |
19334920 GR |
1218 | mode = of_get_phy_mode(port_dn); |
1219 | if (mode < 0) | |
1220 | mode = PHY_INTERFACE_MODE_NA; | |
0d8bcdd3 | 1221 | |
44cc27e4 IC |
1222 | dp->pl_config.dev = &slave_dev->dev; |
1223 | dp->pl_config.type = PHYLINK_NETDEV; | |
1224 | ||
1225 | dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode, | |
77373d49 | 1226 | &dsa_port_phylink_mac_ops); |
aab9c406 FF |
1227 | if (IS_ERR(dp->pl)) { |
1228 | netdev_err(slave_dev, | |
1229 | "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); | |
1230 | return PTR_ERR(dp->pl); | |
0d8bcdd3 FF |
1231 | } |
1232 | ||
aab9c406 FF |
1233 | /* Register only if the switch provides such a callback, since this |
1234 | * callback takes precedence over polling the link GPIO in PHYLINK | |
1235 | * (see phylink_get_fixed_state). | |
1236 | */ | |
1237 | if (ds->ops->phylink_fixed_state) | |
1238 | phylink_fixed_state_cb(dp->pl, dsa_slave_phylink_fixed_state); | |
1239 | ||
9d490b4e | 1240 | if (ds->ops->get_phy_flags) |
d945097b | 1241 | phy_flags = ds->ops->get_phy_flags(ds, dp->index); |
6819563e | 1242 | |
aab9c406 | 1243 | ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags); |
6146dd45 VO |
1244 | if (ret == -ENODEV && ds->slave_mii_bus) { |
1245 | /* We could not connect to a designated PHY or SFP, so try to | |
1246 | * use the switch internal MDIO bus instead | |
aab9c406 | 1247 | */ |
d945097b | 1248 | ret = dsa_slave_phy_connect(slave_dev, dp->index); |
d25b8e74 | 1249 | if (ret) { |
aab9c406 FF |
1250 | netdev_err(slave_dev, |
1251 | "failed to connect to port %d: %d\n", | |
d945097b | 1252 | dp->index, ret); |
aab9c406 | 1253 | phylink_destroy(dp->pl); |
c305c165 | 1254 | return ret; |
d25b8e74 | 1255 | } |
b31f65fb | 1256 | } |
9697f1cd | 1257 | |
6146dd45 | 1258 | return ret; |
0d8bcdd3 FF |
1259 | } |
1260 | ||
448b4482 AL |
1261 | static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
1262 | static void dsa_slave_set_lockdep_class_one(struct net_device *dev, | |
1263 | struct netdev_queue *txq, | |
1264 | void *_unused) | |
1265 | { | |
1266 | lockdep_set_class(&txq->_xmit_lock, | |
1267 | &dsa_slave_netdev_xmit_lock_key); | |
1268 | } | |
1269 | ||
24462549 FF |
1270 | int dsa_slave_suspend(struct net_device *slave_dev) |
1271 | { | |
aab9c406 | 1272 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
24462549 | 1273 | |
a94c689e FF |
1274 | if (!netif_running(slave_dev)) |
1275 | return 0; | |
1276 | ||
97a69a0d VO |
1277 | cancel_work_sync(&dp->xmit_work); |
1278 | skb_queue_purge(&dp->xmit_queue); | |
1279 | ||
f154be24 FF |
1280 | netif_device_detach(slave_dev); |
1281 | ||
aab9c406 FF |
1282 | rtnl_lock(); |
1283 | phylink_stop(dp->pl); | |
1284 | rtnl_unlock(); | |
24462549 FF |
1285 | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | int dsa_slave_resume(struct net_device *slave_dev) | |
1290 | { | |
aab9c406 FF |
1291 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
1292 | ||
a94c689e FF |
1293 | if (!netif_running(slave_dev)) |
1294 | return 0; | |
1295 | ||
24462549 FF |
1296 | netif_device_attach(slave_dev); |
1297 | ||
aab9c406 FF |
1298 | rtnl_lock(); |
1299 | phylink_start(dp->pl); | |
1300 | rtnl_unlock(); | |
24462549 FF |
1301 | |
1302 | return 0; | |
1303 | } | |
1304 | ||
6158eaa7 VD |
1305 | static void dsa_slave_notify(struct net_device *dev, unsigned long val) |
1306 | { | |
d0006b00 | 1307 | struct net_device *master = dsa_slave_to_master(dev); |
d945097b | 1308 | struct dsa_port *dp = dsa_slave_to_port(dev); |
6158eaa7 VD |
1309 | struct dsa_notifier_register_info rinfo = { |
1310 | .switch_number = dp->ds->index, | |
1311 | .port_number = dp->index, | |
1312 | .master = master, | |
1313 | .info.dev = dev, | |
1314 | }; | |
1315 | ||
1316 | call_dsa_notifiers(val, dev, &rinfo.info); | |
1317 | } | |
1318 | ||
951259aa | 1319 | int dsa_slave_create(struct dsa_port *port) |
91da11f8 | 1320 | { |
24a9332a | 1321 | const struct dsa_port *cpu_dp = port->cpu_dp; |
f8b8b1cd | 1322 | struct net_device *master = cpu_dp->master; |
4cfbf09c | 1323 | struct dsa_switch *ds = port->ds; |
951259aa | 1324 | const char *name = port->name; |
91da11f8 LB |
1325 | struct net_device *slave_dev; |
1326 | struct dsa_slave_priv *p; | |
1327 | int ret; | |
1328 | ||
55199df6 FF |
1329 | if (!ds->num_tx_queues) |
1330 | ds->num_tx_queues = 1; | |
1331 | ||
1332 | slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name, | |
1333 | NET_NAME_UNKNOWN, ether_setup, | |
1334 | ds->num_tx_queues, 1); | |
91da11f8 | 1335 | if (slave_dev == NULL) |
d87d6f44 | 1336 | return -ENOMEM; |
91da11f8 | 1337 | |
061f6a50 FF |
1338 | slave_dev->features = master->vlan_features | NETIF_F_HW_TC | |
1339 | NETIF_F_HW_VLAN_CTAG_FILTER; | |
f50f2127 | 1340 | slave_dev->hw_features |= NETIF_F_HW_TC; |
7ad24ea4 | 1341 | slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
4974f9b7 | 1342 | if (!IS_ERR_OR_NULL(port->mac)) |
a2c7023f XS |
1343 | ether_addr_copy(slave_dev->dev_addr, port->mac); |
1344 | else | |
1345 | eth_hw_addr_inherit(slave_dev, master); | |
0a5f107b | 1346 | slave_dev->priv_flags |= IFF_NO_QUEUE; |
3e8a72d1 | 1347 | slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
8b1efc0f JW |
1348 | slave_dev->min_mtu = 0; |
1349 | slave_dev->max_mtu = ETH_MAX_MTU; | |
f37db85d | 1350 | SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); |
d442ad4a | 1351 | |
448b4482 AL |
1352 | netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
1353 | NULL); | |
1354 | ||
4cfbf09c VD |
1355 | SET_NETDEV_DEV(slave_dev, port->ds->dev); |
1356 | slave_dev->dev.of_node = port->dn; | |
5075314e AD |
1357 | slave_dev->vlan_features = master->vlan_features; |
1358 | ||
1359 | p = netdev_priv(slave_dev); | |
5f6b4e14 FF |
1360 | p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1361 | if (!p->stats64) { | |
1362 | free_netdev(slave_dev); | |
1363 | return -ENOMEM; | |
1364 | } | |
4cfbf09c | 1365 | p->dp = port; |
f50f2127 | 1366 | INIT_LIST_HEAD(&p->mall_tc_list); |
97a69a0d VO |
1367 | INIT_WORK(&port->xmit_work, dsa_port_xmit_work); |
1368 | skb_queue_head_init(&port->xmit_queue); | |
15240248 | 1369 | p->xmit = cpu_dp->tag_ops->xmit; |
f8b8b1cd | 1370 | port->slave = slave_dev; |
91da11f8 LB |
1371 | |
1372 | netif_carrier_off(slave_dev); | |
1373 | ||
4fa7b718 | 1374 | ret = dsa_slave_phy_setup(slave_dev); |
0071f56e AL |
1375 | if (ret) { |
1376 | netdev_err(master, "error %d setting up slave phy\n", ret); | |
e804441c FF |
1377 | goto out_free; |
1378 | } | |
1379 | ||
6158eaa7 | 1380 | dsa_slave_notify(slave_dev, DSA_PORT_REGISTER); |
60724d4b | 1381 | |
e804441c FF |
1382 | ret = register_netdev(slave_dev); |
1383 | if (ret) { | |
1384 | netdev_err(master, "error %d registering interface %s\n", | |
1385 | ret, slave_dev->name); | |
1386 | goto out_phy; | |
0071f56e AL |
1387 | } |
1388 | ||
d87d6f44 | 1389 | return 0; |
e804441c FF |
1390 | |
1391 | out_phy: | |
aab9c406 FF |
1392 | rtnl_lock(); |
1393 | phylink_disconnect_phy(p->dp->pl); | |
1394 | rtnl_unlock(); | |
1395 | phylink_destroy(p->dp->pl); | |
e804441c FF |
1396 | out_free: |
1397 | free_percpu(p->stats64); | |
1398 | free_netdev(slave_dev); | |
f8b8b1cd | 1399 | port->slave = NULL; |
e804441c | 1400 | return ret; |
91da11f8 | 1401 | } |
b73adef6 | 1402 | |
cda5c15b NA |
1403 | void dsa_slave_destroy(struct net_device *slave_dev) |
1404 | { | |
d945097b | 1405 | struct dsa_port *dp = dsa_slave_to_port(slave_dev); |
cda5c15b NA |
1406 | struct dsa_slave_priv *p = netdev_priv(slave_dev); |
1407 | ||
1408 | netif_carrier_off(slave_dev); | |
aab9c406 FF |
1409 | rtnl_lock(); |
1410 | phylink_disconnect_phy(dp->pl); | |
1411 | rtnl_unlock(); | |
881eadab | 1412 | |
6158eaa7 | 1413 | dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER); |
cda5c15b | 1414 | unregister_netdev(slave_dev); |
aab9c406 | 1415 | phylink_destroy(dp->pl); |
5f6b4e14 | 1416 | free_percpu(p->stats64); |
cda5c15b NA |
1417 | free_netdev(slave_dev); |
1418 | } | |
1419 | ||
f3b78049 | 1420 | static bool dsa_slave_dev_check(const struct net_device *dev) |
b73adef6 FF |
1421 | { |
1422 | return dev->netdev_ops == &dsa_slave_netdev_ops; | |
1423 | } | |
1424 | ||
8e92ab3a VD |
1425 | static int dsa_slave_changeupper(struct net_device *dev, |
1426 | struct netdev_notifier_changeupper_info *info) | |
b73adef6 | 1427 | { |
d945097b | 1428 | struct dsa_port *dp = dsa_slave_to_port(dev); |
8e92ab3a | 1429 | int err = NOTIFY_DONE; |
b73adef6 | 1430 | |
8e92ab3a VD |
1431 | if (netif_is_bridge_master(info->upper_dev)) { |
1432 | if (info->linking) { | |
17d7802b | 1433 | err = dsa_port_bridge_join(dp, info->upper_dev); |
8e92ab3a VD |
1434 | err = notifier_from_errno(err); |
1435 | } else { | |
17d7802b | 1436 | dsa_port_bridge_leave(dp, info->upper_dev); |
8e92ab3a | 1437 | err = NOTIFY_OK; |
6debb68a | 1438 | } |
6debb68a | 1439 | } |
b73adef6 | 1440 | |
8e92ab3a | 1441 | return err; |
6debb68a | 1442 | } |
b73adef6 | 1443 | |
cc1d5bda FF |
1444 | static int dsa_slave_upper_vlan_check(struct net_device *dev, |
1445 | struct netdev_notifier_changeupper_info * | |
1446 | info) | |
1447 | { | |
1448 | struct netlink_ext_ack *ext_ack; | |
1449 | struct net_device *slave; | |
1450 | struct dsa_port *dp; | |
1451 | ||
1452 | ext_ack = netdev_notifier_info_to_extack(&info->info); | |
1453 | ||
1454 | if (!is_vlan_dev(dev)) | |
1455 | return NOTIFY_DONE; | |
1456 | ||
1457 | slave = vlan_dev_real_dev(dev); | |
1458 | if (!dsa_slave_dev_check(slave)) | |
1459 | return NOTIFY_DONE; | |
1460 | ||
1461 | dp = dsa_slave_to_port(slave); | |
1462 | if (!dp->bridge_dev) | |
1463 | return NOTIFY_DONE; | |
1464 | ||
1465 | /* Deny enslaving a VLAN device into a VLAN-aware bridge */ | |
1466 | if (br_vlan_enabled(dp->bridge_dev) && | |
1467 | netif_is_bridge_master(info->upper_dev) && info->linking) { | |
1468 | NL_SET_ERR_MSG_MOD(ext_ack, | |
1469 | "Cannot enslave VLAN device into VLAN aware bridge"); | |
1470 | return notifier_from_errno(-EINVAL); | |
1471 | } | |
1472 | ||
1473 | return NOTIFY_DONE; | |
1474 | } | |
1475 | ||
88e4f0ca VD |
1476 | static int dsa_slave_netdevice_event(struct notifier_block *nb, |
1477 | unsigned long event, void *ptr) | |
6debb68a VD |
1478 | { |
1479 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
1480 | ||
cc1d5bda FF |
1481 | if (event == NETDEV_CHANGEUPPER) { |
1482 | if (!dsa_slave_dev_check(dev)) | |
1483 | return dsa_slave_upper_vlan_check(dev, ptr); | |
8e92ab3a | 1484 | |
8e92ab3a | 1485 | return dsa_slave_changeupper(dev, ptr); |
cc1d5bda | 1486 | } |
b73adef6 | 1487 | |
b73adef6 FF |
1488 | return NOTIFY_DONE; |
1489 | } | |
88e4f0ca | 1490 | |
c9eb3e0f AS |
1491 | struct dsa_switchdev_event_work { |
1492 | struct work_struct work; | |
1493 | struct switchdev_notifier_fdb_info fdb_info; | |
1494 | struct net_device *dev; | |
1495 | unsigned long event; | |
1496 | }; | |
1497 | ||
1498 | static void dsa_slave_switchdev_event_work(struct work_struct *work) | |
1499 | { | |
1500 | struct dsa_switchdev_event_work *switchdev_work = | |
1501 | container_of(work, struct dsa_switchdev_event_work, work); | |
1502 | struct net_device *dev = switchdev_work->dev; | |
1503 | struct switchdev_notifier_fdb_info *fdb_info; | |
d945097b | 1504 | struct dsa_port *dp = dsa_slave_to_port(dev); |
c9eb3e0f AS |
1505 | int err; |
1506 | ||
1507 | rtnl_lock(); | |
1508 | switch (switchdev_work->event) { | |
1509 | case SWITCHDEV_FDB_ADD_TO_DEVICE: | |
1510 | fdb_info = &switchdev_work->fdb_info; | |
a37fb855 VD |
1511 | if (!fdb_info->added_by_user) |
1512 | break; | |
1513 | ||
d945097b | 1514 | err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid); |
c9eb3e0f AS |
1515 | if (err) { |
1516 | netdev_dbg(dev, "fdb add failed err=%d\n", err); | |
1517 | break; | |
1518 | } | |
e9ba0fbc | 1519 | fdb_info->offloaded = true; |
c9eb3e0f | 1520 | call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, |
6685987c | 1521 | &fdb_info->info, NULL); |
c9eb3e0f AS |
1522 | break; |
1523 | ||
1524 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
1525 | fdb_info = &switchdev_work->fdb_info; | |
a37fb855 VD |
1526 | if (!fdb_info->added_by_user) |
1527 | break; | |
1528 | ||
d945097b | 1529 | err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid); |
c9eb3e0f AS |
1530 | if (err) { |
1531 | netdev_dbg(dev, "fdb del failed err=%d\n", err); | |
1532 | dev_close(dev); | |
1533 | } | |
1534 | break; | |
1535 | } | |
1536 | rtnl_unlock(); | |
1537 | ||
1538 | kfree(switchdev_work->fdb_info.addr); | |
1539 | kfree(switchdev_work); | |
1540 | dev_put(dev); | |
1541 | } | |
1542 | ||
1543 | static int | |
1544 | dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work * | |
1545 | switchdev_work, | |
1546 | const struct switchdev_notifier_fdb_info * | |
1547 | fdb_info) | |
1548 | { | |
1549 | memcpy(&switchdev_work->fdb_info, fdb_info, | |
1550 | sizeof(switchdev_work->fdb_info)); | |
1551 | switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); | |
1552 | if (!switchdev_work->fdb_info.addr) | |
1553 | return -ENOMEM; | |
1554 | ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, | |
1555 | fdb_info->addr); | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | /* Called under rcu_read_lock() */ | |
1560 | static int dsa_slave_switchdev_event(struct notifier_block *unused, | |
1561 | unsigned long event, void *ptr) | |
1562 | { | |
1563 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
1564 | struct dsa_switchdev_event_work *switchdev_work; | |
79b139f4 VD |
1565 | int err; |
1566 | ||
1567 | if (event == SWITCHDEV_PORT_ATTR_SET) { | |
1568 | err = switchdev_handle_port_attr_set(dev, ptr, | |
1569 | dsa_slave_dev_check, | |
1570 | dsa_slave_port_attr_set); | |
1571 | return notifier_from_errno(err); | |
1572 | } | |
c9eb3e0f AS |
1573 | |
1574 | if (!dsa_slave_dev_check(dev)) | |
1575 | return NOTIFY_DONE; | |
1576 | ||
1577 | switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); | |
1578 | if (!switchdev_work) | |
1579 | return NOTIFY_BAD; | |
1580 | ||
1581 | INIT_WORK(&switchdev_work->work, | |
1582 | dsa_slave_switchdev_event_work); | |
1583 | switchdev_work->dev = dev; | |
1584 | switchdev_work->event = event; | |
1585 | ||
1586 | switch (event) { | |
1587 | case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ | |
1588 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
a37fb855 | 1589 | if (dsa_slave_switchdev_fdb_work_init(switchdev_work, ptr)) |
c9eb3e0f AS |
1590 | goto err_fdb_work_init; |
1591 | dev_hold(dev); | |
1592 | break; | |
1593 | default: | |
1594 | kfree(switchdev_work); | |
1595 | return NOTIFY_DONE; | |
1596 | } | |
1597 | ||
1598 | dsa_schedule_work(&switchdev_work->work); | |
1599 | return NOTIFY_OK; | |
1600 | ||
1601 | err_fdb_work_init: | |
1602 | kfree(switchdev_work); | |
1603 | return NOTIFY_BAD; | |
1604 | } | |
1605 | ||
2b239f67 PM |
1606 | static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused, |
1607 | unsigned long event, void *ptr) | |
1608 | { | |
1609 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
79b139f4 | 1610 | int err; |
2b239f67 PM |
1611 | |
1612 | switch (event) { | |
79b139f4 VD |
1613 | case SWITCHDEV_PORT_OBJ_ADD: |
1614 | err = switchdev_handle_port_obj_add(dev, ptr, | |
1615 | dsa_slave_dev_check, | |
1616 | dsa_slave_port_obj_add); | |
1617 | return notifier_from_errno(err); | |
2b239f67 | 1618 | case SWITCHDEV_PORT_OBJ_DEL: |
79b139f4 VD |
1619 | err = switchdev_handle_port_obj_del(dev, ptr, |
1620 | dsa_slave_dev_check, | |
1621 | dsa_slave_port_obj_del); | |
1622 | return notifier_from_errno(err); | |
9ed1eced | 1623 | case SWITCHDEV_PORT_ATTR_SET: |
79b139f4 VD |
1624 | err = switchdev_handle_port_attr_set(dev, ptr, |
1625 | dsa_slave_dev_check, | |
1626 | dsa_slave_port_attr_set); | |
1627 | return notifier_from_errno(err); | |
2b239f67 PM |
1628 | } |
1629 | ||
1630 | return NOTIFY_DONE; | |
1631 | } | |
1632 | ||
88e4f0ca | 1633 | static struct notifier_block dsa_slave_nb __read_mostly = { |
c9eb3e0f AS |
1634 | .notifier_call = dsa_slave_netdevice_event, |
1635 | }; | |
1636 | ||
1637 | static struct notifier_block dsa_slave_switchdev_notifier = { | |
1638 | .notifier_call = dsa_slave_switchdev_event, | |
88e4f0ca VD |
1639 | }; |
1640 | ||
2b239f67 PM |
1641 | static struct notifier_block dsa_slave_switchdev_blocking_notifier = { |
1642 | .notifier_call = dsa_slave_switchdev_blocking_event, | |
1643 | }; | |
1644 | ||
88e4f0ca VD |
1645 | int dsa_slave_register_notifier(void) |
1646 | { | |
2b239f67 | 1647 | struct notifier_block *nb; |
c9eb3e0f AS |
1648 | int err; |
1649 | ||
1650 | err = register_netdevice_notifier(&dsa_slave_nb); | |
1651 | if (err) | |
1652 | return err; | |
1653 | ||
1654 | err = register_switchdev_notifier(&dsa_slave_switchdev_notifier); | |
1655 | if (err) | |
1656 | goto err_switchdev_nb; | |
1657 | ||
2b239f67 PM |
1658 | nb = &dsa_slave_switchdev_blocking_notifier; |
1659 | err = register_switchdev_blocking_notifier(nb); | |
1660 | if (err) | |
1661 | goto err_switchdev_blocking_nb; | |
1662 | ||
c9eb3e0f AS |
1663 | return 0; |
1664 | ||
2b239f67 PM |
1665 | err_switchdev_blocking_nb: |
1666 | unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); | |
c9eb3e0f AS |
1667 | err_switchdev_nb: |
1668 | unregister_netdevice_notifier(&dsa_slave_nb); | |
1669 | return err; | |
88e4f0ca VD |
1670 | } |
1671 | ||
1672 | void dsa_slave_unregister_notifier(void) | |
1673 | { | |
2b239f67 | 1674 | struct notifier_block *nb; |
88e4f0ca VD |
1675 | int err; |
1676 | ||
2b239f67 PM |
1677 | nb = &dsa_slave_switchdev_blocking_notifier; |
1678 | err = unregister_switchdev_blocking_notifier(nb); | |
1679 | if (err) | |
1680 | pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err); | |
1681 | ||
c9eb3e0f AS |
1682 | err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); |
1683 | if (err) | |
1684 | pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err); | |
1685 | ||
88e4f0ca VD |
1686 | err = unregister_netdevice_notifier(&dsa_slave_nb); |
1687 | if (err) | |
1688 | pr_err("DSA: failed to unregister slave notifier (%d)\n", err); | |
1689 | } |