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111cf1ab IA |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Texas Instruments switchdev Driver | |
4 | * | |
5 | * Copyright (C) 2019 Texas Instruments | |
6 | * | |
7 | */ | |
8 | ||
9 | #include <linux/etherdevice.h> | |
10 | #include <linux/if_bridge.h> | |
11 | #include <linux/netdevice.h> | |
12 | #include <linux/workqueue.h> | |
13 | #include <net/switchdev.h> | |
14 | ||
15 | #include "cpsw.h" | |
16 | #include "cpsw_ale.h" | |
17 | #include "cpsw_priv.h" | |
18 | #include "cpsw_switchdev.h" | |
19 | ||
20 | struct cpsw_switchdev_event_work { | |
21 | struct work_struct work; | |
22 | struct switchdev_notifier_fdb_info fdb_info; | |
23 | struct cpsw_priv *priv; | |
24 | unsigned long event; | |
25 | }; | |
26 | ||
bae33f2b | 27 | static int cpsw_port_stp_state_set(struct cpsw_priv *priv, u8 state) |
111cf1ab IA |
28 | { |
29 | struct cpsw_common *cpsw = priv->cpsw; | |
30 | u8 cpsw_state; | |
31 | int ret = 0; | |
32 | ||
111cf1ab IA |
33 | switch (state) { |
34 | case BR_STATE_FORWARDING: | |
35 | cpsw_state = ALE_PORT_STATE_FORWARD; | |
36 | break; | |
37 | case BR_STATE_LEARNING: | |
38 | cpsw_state = ALE_PORT_STATE_LEARN; | |
39 | break; | |
40 | case BR_STATE_DISABLED: | |
41 | cpsw_state = ALE_PORT_STATE_DISABLE; | |
42 | break; | |
43 | case BR_STATE_LISTENING: | |
44 | case BR_STATE_BLOCKING: | |
45 | cpsw_state = ALE_PORT_STATE_BLOCK; | |
46 | break; | |
47 | default: | |
48 | return -EOPNOTSUPP; | |
49 | } | |
50 | ||
51 | ret = cpsw_ale_control_set(cpsw->ale, priv->emac_port, | |
52 | ALE_PORT_STATE, cpsw_state); | |
53 | dev_dbg(priv->dev, "ale state: %u\n", cpsw_state); | |
54 | ||
55 | return ret; | |
56 | } | |
57 | ||
58 | static int cpsw_port_attr_br_flags_set(struct cpsw_priv *priv, | |
111cf1ab | 59 | struct net_device *orig_dev, |
e18f4c18 | 60 | struct switchdev_brport_flags flags) |
111cf1ab IA |
61 | { |
62 | struct cpsw_common *cpsw = priv->cpsw; | |
111cf1ab | 63 | |
e18f4c18 VO |
64 | if (flags.mask & BR_MCAST_FLOOD) { |
65 | bool unreg_mcast_add = false; | |
111cf1ab | 66 | |
e18f4c18 VO |
67 | if (flags.val & BR_MCAST_FLOOD) |
68 | unreg_mcast_add = true; | |
69 | ||
70 | dev_dbg(priv->dev, "BR_MCAST_FLOOD: %d port %u\n", | |
71 | unreg_mcast_add, priv->emac_port); | |
72 | ||
73 | cpsw_ale_set_unreg_mcast(cpsw->ale, BIT(priv->emac_port), | |
74 | unreg_mcast_add); | |
75 | } | |
111cf1ab IA |
76 | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int cpsw_port_attr_br_flags_pre_set(struct net_device *netdev, | |
e18f4c18 | 81 | struct switchdev_brport_flags flags) |
111cf1ab | 82 | { |
e18f4c18 | 83 | if (flags.mask & ~(BR_LEARNING | BR_MCAST_FLOOD)) |
111cf1ab IA |
84 | return -EINVAL; |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
69bfac96 | 89 | static int cpsw_port_attr_set(struct net_device *ndev, const void *ctx, |
4c08c586 VO |
90 | const struct switchdev_attr *attr, |
91 | struct netlink_ext_ack *extack) | |
111cf1ab IA |
92 | { |
93 | struct cpsw_priv *priv = netdev_priv(ndev); | |
94 | int ret; | |
95 | ||
96 | dev_dbg(priv->dev, "attr: id %u port: %u\n", attr->id, priv->emac_port); | |
97 | ||
98 | switch (attr->id) { | |
99 | case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: | |
bae33f2b | 100 | ret = cpsw_port_attr_br_flags_pre_set(ndev, |
111cf1ab IA |
101 | attr->u.brport_flags); |
102 | break; | |
103 | case SWITCHDEV_ATTR_ID_PORT_STP_STATE: | |
bae33f2b | 104 | ret = cpsw_port_stp_state_set(priv, attr->u.stp_state); |
111cf1ab IA |
105 | dev_dbg(priv->dev, "stp state: %u\n", attr->u.stp_state); |
106 | break; | |
107 | case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: | |
bae33f2b | 108 | ret = cpsw_port_attr_br_flags_set(priv, attr->orig_dev, |
111cf1ab IA |
109 | attr->u.brport_flags); |
110 | break; | |
111 | default: | |
112 | ret = -EOPNOTSUPP; | |
113 | break; | |
114 | } | |
115 | ||
116 | return ret; | |
117 | } | |
118 | ||
119 | static u16 cpsw_get_pvid(struct cpsw_priv *priv) | |
120 | { | |
121 | struct cpsw_common *cpsw = priv->cpsw; | |
122 | u32 __iomem *port_vlan_reg; | |
123 | u32 pvid; | |
124 | ||
125 | if (priv->emac_port) { | |
126 | int reg = CPSW2_PORT_VLAN; | |
127 | ||
128 | if (cpsw->version == CPSW_VERSION_1) | |
129 | reg = CPSW1_PORT_VLAN; | |
130 | pvid = slave_read(cpsw->slaves + (priv->emac_port - 1), reg); | |
131 | } else { | |
132 | port_vlan_reg = &cpsw->host_port_regs->port_vlan; | |
133 | pvid = readl(port_vlan_reg); | |
134 | } | |
135 | ||
136 | pvid = pvid & 0xfff; | |
137 | ||
138 | return pvid; | |
139 | } | |
140 | ||
141 | static void cpsw_set_pvid(struct cpsw_priv *priv, u16 vid, bool cfi, u32 cos) | |
142 | { | |
143 | struct cpsw_common *cpsw = priv->cpsw; | |
144 | void __iomem *port_vlan_reg; | |
145 | u32 pvid; | |
146 | ||
147 | pvid = vid; | |
148 | pvid |= cfi ? BIT(12) : 0; | |
149 | pvid |= (cos & 0x7) << 13; | |
150 | ||
151 | if (priv->emac_port) { | |
152 | int reg = CPSW2_PORT_VLAN; | |
153 | ||
154 | if (cpsw->version == CPSW_VERSION_1) | |
155 | reg = CPSW1_PORT_VLAN; | |
156 | /* no barrier */ | |
157 | slave_write(cpsw->slaves + (priv->emac_port - 1), pvid, reg); | |
158 | } else { | |
159 | /* CPU port */ | |
160 | port_vlan_reg = &cpsw->host_port_regs->port_vlan; | |
161 | writel(pvid, port_vlan_reg); | |
162 | } | |
163 | } | |
164 | ||
165 | static int cpsw_port_vlan_add(struct cpsw_priv *priv, bool untag, bool pvid, | |
166 | u16 vid, struct net_device *orig_dev) | |
167 | { | |
168 | bool cpu_port = netif_is_bridge_master(orig_dev); | |
169 | struct cpsw_common *cpsw = priv->cpsw; | |
170 | int unreg_mcast_mask = 0; | |
171 | int reg_mcast_mask = 0; | |
172 | int untag_mask = 0; | |
173 | int port_mask; | |
174 | int ret = 0; | |
175 | u32 flags; | |
176 | ||
177 | if (cpu_port) { | |
178 | port_mask = BIT(HOST_PORT_NUM); | |
179 | flags = orig_dev->flags; | |
180 | unreg_mcast_mask = port_mask; | |
181 | } else { | |
182 | port_mask = BIT(priv->emac_port); | |
183 | flags = priv->ndev->flags; | |
184 | } | |
185 | ||
186 | if (flags & IFF_MULTICAST) | |
187 | reg_mcast_mask = port_mask; | |
188 | ||
189 | if (untag) | |
190 | untag_mask = port_mask; | |
191 | ||
192 | ret = cpsw_ale_vlan_add_modify(cpsw->ale, vid, port_mask, untag_mask, | |
193 | reg_mcast_mask, unreg_mcast_mask); | |
194 | if (ret) { | |
195 | dev_err(priv->dev, "Unable to add vlan\n"); | |
196 | return ret; | |
197 | } | |
198 | ||
199 | if (cpu_port) | |
200 | cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, | |
201 | HOST_PORT_NUM, ALE_VLAN, vid); | |
202 | if (!pvid) | |
203 | return ret; | |
204 | ||
205 | cpsw_set_pvid(priv, vid, 0, 0); | |
206 | ||
207 | dev_dbg(priv->dev, "VID add: %s: vid:%u ports:%X\n", | |
208 | priv->ndev->name, vid, port_mask); | |
209 | return ret; | |
210 | } | |
211 | ||
212 | static int cpsw_port_vlan_del(struct cpsw_priv *priv, u16 vid, | |
213 | struct net_device *orig_dev) | |
214 | { | |
215 | bool cpu_port = netif_is_bridge_master(orig_dev); | |
216 | struct cpsw_common *cpsw = priv->cpsw; | |
217 | int port_mask; | |
218 | int ret = 0; | |
219 | ||
220 | if (cpu_port) | |
221 | port_mask = BIT(HOST_PORT_NUM); | |
222 | else | |
223 | port_mask = BIT(priv->emac_port); | |
224 | ||
82882bd5 | 225 | ret = cpsw_ale_vlan_del_modify(cpsw->ale, vid, port_mask); |
111cf1ab IA |
226 | if (ret != 0) |
227 | return ret; | |
228 | ||
229 | /* We don't care for the return value here, error is returned only if | |
230 | * the unicast entry is not present | |
231 | */ | |
232 | if (cpu_port) | |
233 | cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, | |
234 | HOST_PORT_NUM, ALE_VLAN, vid); | |
235 | ||
236 | if (vid == cpsw_get_pvid(priv)) | |
237 | cpsw_set_pvid(priv, 0, 0, 0); | |
238 | ||
239 | /* We don't care for the return value here, error is returned only if | |
240 | * the multicast entry is not present | |
241 | */ | |
242 | cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast, | |
243 | port_mask, ALE_VLAN, vid); | |
244 | dev_dbg(priv->dev, "VID del: %s: vid:%u ports:%X\n", | |
245 | priv->ndev->name, vid, port_mask); | |
246 | ||
247 | return ret; | |
248 | } | |
249 | ||
250 | static int cpsw_port_vlans_add(struct cpsw_priv *priv, | |
ffb68fc5 | 251 | const struct switchdev_obj_port_vlan *vlan) |
111cf1ab IA |
252 | { |
253 | bool untag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; | |
254 | struct net_device *orig_dev = vlan->obj.orig_dev; | |
111cf1ab | 255 | bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; |
111cf1ab IA |
256 | |
257 | dev_dbg(priv->dev, "VID add: %s: vid:%u flags:%X\n", | |
b7a9e0da | 258 | priv->ndev->name, vlan->vid, vlan->flags); |
111cf1ab | 259 | |
b7a9e0da | 260 | return cpsw_port_vlan_add(priv, untag, pvid, vlan->vid, orig_dev); |
111cf1ab IA |
261 | } |
262 | ||
263 | static int cpsw_port_mdb_add(struct cpsw_priv *priv, | |
ffb68fc5 | 264 | struct switchdev_obj_port_mdb *mdb) |
111cf1ab IA |
265 | |
266 | { | |
267 | struct net_device *orig_dev = mdb->obj.orig_dev; | |
268 | bool cpu_port = netif_is_bridge_master(orig_dev); | |
269 | struct cpsw_common *cpsw = priv->cpsw; | |
270 | int port_mask; | |
271 | int err; | |
272 | ||
111cf1ab IA |
273 | if (cpu_port) |
274 | port_mask = BIT(HOST_PORT_NUM); | |
275 | else | |
276 | port_mask = BIT(priv->emac_port); | |
277 | ||
278 | err = cpsw_ale_add_mcast(cpsw->ale, mdb->addr, port_mask, | |
279 | ALE_VLAN, mdb->vid, 0); | |
280 | dev_dbg(priv->dev, "MDB add: %s: vid %u:%pM ports: %X\n", | |
281 | priv->ndev->name, mdb->vid, mdb->addr, port_mask); | |
282 | ||
283 | return err; | |
284 | } | |
285 | ||
286 | static int cpsw_port_mdb_del(struct cpsw_priv *priv, | |
287 | struct switchdev_obj_port_mdb *mdb) | |
288 | ||
289 | { | |
290 | struct net_device *orig_dev = mdb->obj.orig_dev; | |
291 | bool cpu_port = netif_is_bridge_master(orig_dev); | |
292 | struct cpsw_common *cpsw = priv->cpsw; | |
293 | int del_mask; | |
294 | int err; | |
295 | ||
296 | if (cpu_port) | |
297 | del_mask = BIT(HOST_PORT_NUM); | |
298 | else | |
299 | del_mask = BIT(priv->emac_port); | |
300 | ||
301 | err = cpsw_ale_del_mcast(cpsw->ale, mdb->addr, del_mask, | |
302 | ALE_VLAN, mdb->vid); | |
303 | dev_dbg(priv->dev, "MDB del: %s: vid %u:%pM ports: %X\n", | |
304 | priv->ndev->name, mdb->vid, mdb->addr, del_mask); | |
305 | ||
306 | return err; | |
307 | } | |
308 | ||
69bfac96 | 309 | static int cpsw_port_obj_add(struct net_device *ndev, const void *ctx, |
111cf1ab | 310 | const struct switchdev_obj *obj, |
111cf1ab IA |
311 | struct netlink_ext_ack *extack) |
312 | { | |
313 | struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); | |
314 | struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); | |
315 | struct cpsw_priv *priv = netdev_priv(ndev); | |
316 | int err = 0; | |
317 | ||
318 | dev_dbg(priv->dev, "obj_add: id %u port: %u\n", | |
319 | obj->id, priv->emac_port); | |
320 | ||
321 | switch (obj->id) { | |
322 | case SWITCHDEV_OBJ_ID_PORT_VLAN: | |
ffb68fc5 | 323 | err = cpsw_port_vlans_add(priv, vlan); |
111cf1ab IA |
324 | break; |
325 | case SWITCHDEV_OBJ_ID_PORT_MDB: | |
326 | case SWITCHDEV_OBJ_ID_HOST_MDB: | |
ffb68fc5 | 327 | err = cpsw_port_mdb_add(priv, mdb); |
111cf1ab IA |
328 | break; |
329 | default: | |
330 | err = -EOPNOTSUPP; | |
331 | break; | |
332 | } | |
333 | ||
334 | return err; | |
335 | } | |
336 | ||
69bfac96 | 337 | static int cpsw_port_obj_del(struct net_device *ndev, const void *ctx, |
111cf1ab IA |
338 | const struct switchdev_obj *obj) |
339 | { | |
340 | struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); | |
341 | struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); | |
342 | struct cpsw_priv *priv = netdev_priv(ndev); | |
343 | int err = 0; | |
344 | ||
345 | dev_dbg(priv->dev, "obj_del: id %u port: %u\n", | |
346 | obj->id, priv->emac_port); | |
347 | ||
348 | switch (obj->id) { | |
349 | case SWITCHDEV_OBJ_ID_PORT_VLAN: | |
b7a9e0da | 350 | err = cpsw_port_vlan_del(priv, vlan->vid, vlan->obj.orig_dev); |
111cf1ab IA |
351 | break; |
352 | case SWITCHDEV_OBJ_ID_PORT_MDB: | |
353 | case SWITCHDEV_OBJ_ID_HOST_MDB: | |
354 | err = cpsw_port_mdb_del(priv, mdb); | |
355 | break; | |
356 | default: | |
357 | err = -EOPNOTSUPP; | |
358 | break; | |
359 | } | |
360 | ||
361 | return err; | |
362 | } | |
363 | ||
364 | static void cpsw_fdb_offload_notify(struct net_device *ndev, | |
365 | struct switchdev_notifier_fdb_info *rcv) | |
366 | { | |
c35b57ce | 367 | struct switchdev_notifier_fdb_info info = {}; |
111cf1ab IA |
368 | |
369 | info.addr = rcv->addr; | |
370 | info.vid = rcv->vid; | |
371 | info.offloaded = true; | |
372 | call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, | |
373 | ndev, &info.info, NULL); | |
374 | } | |
375 | ||
376 | static void cpsw_switchdev_event_work(struct work_struct *work) | |
377 | { | |
378 | struct cpsw_switchdev_event_work *switchdev_work = | |
379 | container_of(work, struct cpsw_switchdev_event_work, work); | |
380 | struct cpsw_priv *priv = switchdev_work->priv; | |
381 | struct switchdev_notifier_fdb_info *fdb; | |
382 | struct cpsw_common *cpsw = priv->cpsw; | |
383 | int port = priv->emac_port; | |
384 | ||
385 | rtnl_lock(); | |
386 | switch (switchdev_work->event) { | |
387 | case SWITCHDEV_FDB_ADD_TO_DEVICE: | |
388 | fdb = &switchdev_work->fdb_info; | |
389 | ||
390 | dev_dbg(cpsw->dev, "cpsw_fdb_add: MACID = %pM vid = %u flags = %u %u -- port %d\n", | |
391 | fdb->addr, fdb->vid, fdb->added_by_user, | |
392 | fdb->offloaded, port); | |
393 | ||
2c4eca3e | 394 | if (!fdb->added_by_user || fdb->is_local) |
111cf1ab IA |
395 | break; |
396 | if (memcmp(priv->mac_addr, (u8 *)fdb->addr, ETH_ALEN) == 0) | |
397 | port = HOST_PORT_NUM; | |
398 | ||
399 | cpsw_ale_add_ucast(cpsw->ale, (u8 *)fdb->addr, port, | |
400 | fdb->vid ? ALE_VLAN : 0, fdb->vid); | |
401 | cpsw_fdb_offload_notify(priv->ndev, fdb); | |
402 | break; | |
403 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
404 | fdb = &switchdev_work->fdb_info; | |
405 | ||
406 | dev_dbg(cpsw->dev, "cpsw_fdb_del: MACID = %pM vid = %u flags = %u %u -- port %d\n", | |
407 | fdb->addr, fdb->vid, fdb->added_by_user, | |
408 | fdb->offloaded, port); | |
409 | ||
2c4eca3e | 410 | if (!fdb->added_by_user || fdb->is_local) |
111cf1ab IA |
411 | break; |
412 | if (memcmp(priv->mac_addr, (u8 *)fdb->addr, ETH_ALEN) == 0) | |
413 | port = HOST_PORT_NUM; | |
414 | ||
415 | cpsw_ale_del_ucast(cpsw->ale, (u8 *)fdb->addr, port, | |
416 | fdb->vid ? ALE_VLAN : 0, fdb->vid); | |
417 | break; | |
418 | default: | |
419 | break; | |
420 | } | |
421 | rtnl_unlock(); | |
422 | ||
423 | kfree(switchdev_work->fdb_info.addr); | |
424 | kfree(switchdev_work); | |
425 | dev_put(priv->ndev); | |
426 | } | |
427 | ||
428 | /* called under rcu_read_lock() */ | |
429 | static int cpsw_switchdev_event(struct notifier_block *unused, | |
430 | unsigned long event, void *ptr) | |
431 | { | |
432 | struct net_device *ndev = switchdev_notifier_info_to_dev(ptr); | |
433 | struct switchdev_notifier_fdb_info *fdb_info = ptr; | |
434 | struct cpsw_switchdev_event_work *switchdev_work; | |
435 | struct cpsw_priv *priv = netdev_priv(ndev); | |
436 | int err; | |
437 | ||
438 | if (event == SWITCHDEV_PORT_ATTR_SET) { | |
439 | err = switchdev_handle_port_attr_set(ndev, ptr, | |
440 | cpsw_port_dev_check, | |
441 | cpsw_port_attr_set); | |
442 | return notifier_from_errno(err); | |
443 | } | |
444 | ||
445 | if (!cpsw_port_dev_check(ndev)) | |
446 | return NOTIFY_DONE; | |
447 | ||
448 | switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); | |
449 | if (WARN_ON(!switchdev_work)) | |
450 | return NOTIFY_BAD; | |
451 | ||
452 | INIT_WORK(&switchdev_work->work, cpsw_switchdev_event_work); | |
453 | switchdev_work->priv = priv; | |
454 | switchdev_work->event = event; | |
455 | ||
456 | switch (event) { | |
457 | case SWITCHDEV_FDB_ADD_TO_DEVICE: | |
458 | case SWITCHDEV_FDB_DEL_TO_DEVICE: | |
459 | memcpy(&switchdev_work->fdb_info, ptr, | |
460 | sizeof(switchdev_work->fdb_info)); | |
461 | switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); | |
462 | if (!switchdev_work->fdb_info.addr) | |
463 | goto err_addr_alloc; | |
464 | ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, | |
465 | fdb_info->addr); | |
466 | dev_hold(ndev); | |
467 | break; | |
468 | default: | |
469 | kfree(switchdev_work); | |
470 | return NOTIFY_DONE; | |
471 | } | |
472 | ||
473 | queue_work(system_long_wq, &switchdev_work->work); | |
474 | ||
475 | return NOTIFY_DONE; | |
476 | ||
477 | err_addr_alloc: | |
478 | kfree(switchdev_work); | |
479 | return NOTIFY_BAD; | |
480 | } | |
481 | ||
482 | static struct notifier_block cpsw_switchdev_notifier = { | |
483 | .notifier_call = cpsw_switchdev_event, | |
484 | }; | |
485 | ||
486 | static int cpsw_switchdev_blocking_event(struct notifier_block *unused, | |
487 | unsigned long event, void *ptr) | |
488 | { | |
489 | struct net_device *dev = switchdev_notifier_info_to_dev(ptr); | |
490 | int err; | |
491 | ||
492 | switch (event) { | |
493 | case SWITCHDEV_PORT_OBJ_ADD: | |
494 | err = switchdev_handle_port_obj_add(dev, ptr, | |
495 | cpsw_port_dev_check, | |
496 | cpsw_port_obj_add); | |
497 | return notifier_from_errno(err); | |
498 | case SWITCHDEV_PORT_OBJ_DEL: | |
499 | err = switchdev_handle_port_obj_del(dev, ptr, | |
500 | cpsw_port_dev_check, | |
501 | cpsw_port_obj_del); | |
502 | return notifier_from_errno(err); | |
503 | case SWITCHDEV_PORT_ATTR_SET: | |
504 | err = switchdev_handle_port_attr_set(dev, ptr, | |
505 | cpsw_port_dev_check, | |
506 | cpsw_port_attr_set); | |
507 | return notifier_from_errno(err); | |
508 | default: | |
509 | break; | |
510 | } | |
511 | ||
512 | return NOTIFY_DONE; | |
513 | } | |
514 | ||
515 | static struct notifier_block cpsw_switchdev_bl_notifier = { | |
516 | .notifier_call = cpsw_switchdev_blocking_event, | |
517 | }; | |
518 | ||
519 | int cpsw_switchdev_register_notifiers(struct cpsw_common *cpsw) | |
520 | { | |
521 | int ret = 0; | |
522 | ||
523 | ret = register_switchdev_notifier(&cpsw_switchdev_notifier); | |
524 | if (ret) { | |
525 | dev_err(cpsw->dev, "register switchdev notifier fail ret:%d\n", | |
526 | ret); | |
527 | return ret; | |
528 | } | |
529 | ||
530 | ret = register_switchdev_blocking_notifier(&cpsw_switchdev_bl_notifier); | |
531 | if (ret) { | |
532 | dev_err(cpsw->dev, "register switchdev blocking notifier ret:%d\n", | |
533 | ret); | |
534 | unregister_switchdev_notifier(&cpsw_switchdev_notifier); | |
535 | } | |
536 | ||
537 | return ret; | |
538 | } | |
539 | ||
540 | void cpsw_switchdev_unregister_notifiers(struct cpsw_common *cpsw) | |
541 | { | |
542 | unregister_switchdev_blocking_notifier(&cpsw_switchdev_bl_notifier); | |
543 | unregister_switchdev_notifier(&cpsw_switchdev_notifier); | |
544 | } |