1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2021 Mellanox Technologies. */
4 #include <linux/netdevice.h>
5 #include <linux/if_bridge.h>
6 #include <net/netevent.h>
7 #include <net/switchdev.h>
9 #include "esw/bridge.h"
12 #define MLX5_ESW_BRIDGE_UPDATE_INTERVAL 1000
14 struct mlx5_bridge_switchdev_fdb_work {
15 struct work_struct work;
16 struct switchdev_notifier_fdb_info fdb_info;
17 struct net_device *dev;
18 struct mlx5_esw_bridge_offloads *br_offloads;
22 static bool mlx5_esw_bridge_dev_same_esw(struct net_device *dev, struct mlx5_eswitch *esw)
24 struct mlx5e_priv *priv = netdev_priv(dev);
26 return esw == priv->mdev->priv.eswitch;
29 static bool mlx5_esw_bridge_dev_same_hw(struct net_device *dev, struct mlx5_eswitch *esw)
31 struct mlx5e_priv *priv = netdev_priv(dev);
32 struct mlx5_core_dev *mdev, *esw_mdev;
33 u64 system_guid, esw_system_guid;
38 system_guid = mlx5_query_nic_system_image_guid(mdev);
39 esw_system_guid = mlx5_query_nic_system_image_guid(esw_mdev);
41 return system_guid == esw_system_guid;
44 static struct net_device *
45 mlx5_esw_bridge_lag_rep_get(struct net_device *dev, struct mlx5_eswitch *esw)
47 struct net_device *lower;
48 struct list_head *iter;
50 netdev_for_each_lower_dev(dev, lower, iter) {
51 struct mlx5_core_dev *mdev;
52 struct mlx5e_priv *priv;
54 if (!mlx5e_eswitch_rep(lower))
57 priv = netdev_priv(lower);
59 if (mlx5_lag_is_shared_fdb(mdev) && mlx5_esw_bridge_dev_same_esw(lower, esw))
66 static struct net_device *
67 mlx5_esw_bridge_rep_vport_num_vhca_id_get(struct net_device *dev, struct mlx5_eswitch *esw,
68 u16 *vport_num, u16 *esw_owner_vhca_id)
70 struct mlx5e_rep_priv *rpriv;
71 struct mlx5e_priv *priv;
73 if (netif_is_lag_master(dev))
74 dev = mlx5_esw_bridge_lag_rep_get(dev, esw);
76 if (!dev || !mlx5e_eswitch_rep(dev) || !mlx5_esw_bridge_dev_same_hw(dev, esw))
79 priv = netdev_priv(dev);
81 *vport_num = rpriv->rep->vport;
82 *esw_owner_vhca_id = MLX5_CAP_GEN(priv->mdev, vhca_id);
86 static struct net_device *
87 mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get(struct net_device *dev, struct mlx5_eswitch *esw,
88 u16 *vport_num, u16 *esw_owner_vhca_id)
90 struct net_device *lower_dev;
91 struct list_head *iter;
93 if (netif_is_lag_master(dev) || mlx5e_eswitch_rep(dev))
94 return mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, esw, vport_num,
97 netdev_for_each_lower_dev(dev, lower_dev, iter) {
98 struct net_device *rep;
100 if (netif_is_bridge_master(lower_dev))
103 rep = mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get(lower_dev, esw, vport_num,
112 static bool mlx5_esw_bridge_is_local(struct net_device *dev, struct net_device *rep,
113 struct mlx5_eswitch *esw)
115 struct mlx5_core_dev *mdev;
116 struct mlx5e_priv *priv;
118 if (!mlx5_esw_bridge_dev_same_esw(rep, esw))
121 priv = netdev_priv(rep);
123 if (netif_is_lag_master(dev))
124 return mlx5_lag_is_shared_fdb(mdev) && mlx5_lag_is_master(mdev);
128 static int mlx5_esw_bridge_port_changeupper(struct notifier_block *nb, void *ptr)
130 struct mlx5_esw_bridge_offloads *br_offloads = container_of(nb,
131 struct mlx5_esw_bridge_offloads,
133 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
134 struct netdev_notifier_changeupper_info *info = ptr;
135 struct net_device *upper = info->upper_dev, *rep;
136 struct mlx5_eswitch *esw = br_offloads->esw;
137 u16 vport_num, esw_owner_vhca_id;
138 struct netlink_ext_ack *extack;
139 int ifindex = upper->ifindex;
142 if (!netif_is_bridge_master(upper))
145 rep = mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, esw, &vport_num, &esw_owner_vhca_id);
149 extack = netdev_notifier_info_to_extack(&info->info);
151 if (mlx5_esw_bridge_is_local(dev, rep, esw))
152 err = info->linking ?
153 mlx5_esw_bridge_vport_link(ifindex, vport_num, esw_owner_vhca_id,
154 br_offloads, extack) :
155 mlx5_esw_bridge_vport_unlink(ifindex, vport_num, esw_owner_vhca_id,
156 br_offloads, extack);
157 else if (mlx5_esw_bridge_dev_same_hw(rep, esw))
158 err = info->linking ?
159 mlx5_esw_bridge_vport_peer_link(ifindex, vport_num, esw_owner_vhca_id,
160 br_offloads, extack) :
161 mlx5_esw_bridge_vport_peer_unlink(ifindex, vport_num, esw_owner_vhca_id,
162 br_offloads, extack);
167 static int mlx5_esw_bridge_switchdev_port_event(struct notifier_block *nb,
168 unsigned long event, void *ptr)
173 case NETDEV_PRECHANGEUPPER:
176 case NETDEV_CHANGEUPPER:
177 err = mlx5_esw_bridge_port_changeupper(nb, ptr);
181 return notifier_from_errno(err);
185 mlx5_esw_bridge_port_obj_add(struct net_device *dev,
186 struct switchdev_notifier_port_obj_info *port_obj_info,
187 struct mlx5_esw_bridge_offloads *br_offloads)
189 struct netlink_ext_ack *extack = switchdev_notifier_info_to_extack(&port_obj_info->info);
190 const struct switchdev_obj *obj = port_obj_info->obj;
191 const struct switchdev_obj_port_vlan *vlan;
192 u16 vport_num, esw_owner_vhca_id;
195 if (!mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, br_offloads->esw, &vport_num,
199 port_obj_info->handled = true;
202 case SWITCHDEV_OBJ_ID_PORT_VLAN:
203 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
204 err = mlx5_esw_bridge_port_vlan_add(vport_num, esw_owner_vhca_id, vlan->vid,
205 vlan->flags, br_offloads, extack);
214 mlx5_esw_bridge_port_obj_del(struct net_device *dev,
215 struct switchdev_notifier_port_obj_info *port_obj_info,
216 struct mlx5_esw_bridge_offloads *br_offloads)
218 const struct switchdev_obj *obj = port_obj_info->obj;
219 const struct switchdev_obj_port_vlan *vlan;
220 u16 vport_num, esw_owner_vhca_id;
222 if (!mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, br_offloads->esw, &vport_num,
226 port_obj_info->handled = true;
229 case SWITCHDEV_OBJ_ID_PORT_VLAN:
230 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
231 mlx5_esw_bridge_port_vlan_del(vport_num, esw_owner_vhca_id, vlan->vid, br_offloads);
240 mlx5_esw_bridge_port_obj_attr_set(struct net_device *dev,
241 struct switchdev_notifier_port_attr_info *port_attr_info,
242 struct mlx5_esw_bridge_offloads *br_offloads)
244 struct netlink_ext_ack *extack = switchdev_notifier_info_to_extack(&port_attr_info->info);
245 const struct switchdev_attr *attr = port_attr_info->attr;
246 u16 vport_num, esw_owner_vhca_id;
249 if (!mlx5_esw_bridge_lower_rep_vport_num_vhca_id_get(dev, br_offloads->esw, &vport_num,
253 port_attr_info->handled = true;
256 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
257 if (attr->u.brport_flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD)) {
258 NL_SET_ERR_MSG_MOD(extack, "Flag is not supported");
262 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
264 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
265 err = mlx5_esw_bridge_ageing_time_set(vport_num, esw_owner_vhca_id,
266 attr->u.ageing_time, br_offloads);
268 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
269 err = mlx5_esw_bridge_vlan_filtering_set(vport_num, esw_owner_vhca_id,
270 attr->u.vlan_filtering, br_offloads);
279 static int mlx5_esw_bridge_event_blocking(struct notifier_block *nb,
280 unsigned long event, void *ptr)
282 struct mlx5_esw_bridge_offloads *br_offloads = container_of(nb,
283 struct mlx5_esw_bridge_offloads,
285 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
289 case SWITCHDEV_PORT_OBJ_ADD:
290 err = mlx5_esw_bridge_port_obj_add(dev, ptr, br_offloads);
292 case SWITCHDEV_PORT_OBJ_DEL:
293 err = mlx5_esw_bridge_port_obj_del(dev, ptr, br_offloads);
295 case SWITCHDEV_PORT_ATTR_SET:
296 err = mlx5_esw_bridge_port_obj_attr_set(dev, ptr, br_offloads);
302 return notifier_from_errno(err);
306 mlx5_esw_bridge_cleanup_switchdev_fdb_work(struct mlx5_bridge_switchdev_fdb_work *fdb_work)
308 dev_put(fdb_work->dev);
309 kfree(fdb_work->fdb_info.addr);
313 static void mlx5_esw_bridge_switchdev_fdb_event_work(struct work_struct *work)
315 struct mlx5_bridge_switchdev_fdb_work *fdb_work =
316 container_of(work, struct mlx5_bridge_switchdev_fdb_work, work);
317 struct switchdev_notifier_fdb_info *fdb_info =
319 struct mlx5_esw_bridge_offloads *br_offloads =
320 fdb_work->br_offloads;
321 struct net_device *dev = fdb_work->dev;
322 u16 vport_num, esw_owner_vhca_id;
326 if (!mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, br_offloads->esw, &vport_num,
331 mlx5_esw_bridge_fdb_create(dev, vport_num, esw_owner_vhca_id, br_offloads,
334 mlx5_esw_bridge_fdb_remove(dev, vport_num, esw_owner_vhca_id, br_offloads,
339 mlx5_esw_bridge_cleanup_switchdev_fdb_work(fdb_work);
342 static struct mlx5_bridge_switchdev_fdb_work *
343 mlx5_esw_bridge_init_switchdev_fdb_work(struct net_device *dev, bool add,
344 struct switchdev_notifier_fdb_info *fdb_info,
345 struct mlx5_esw_bridge_offloads *br_offloads)
347 struct mlx5_bridge_switchdev_fdb_work *work;
350 work = kzalloc(sizeof(*work), GFP_ATOMIC);
352 return ERR_PTR(-ENOMEM);
354 INIT_WORK(&work->work, mlx5_esw_bridge_switchdev_fdb_event_work);
355 memcpy(&work->fdb_info, fdb_info, sizeof(work->fdb_info));
357 addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
360 return ERR_PTR(-ENOMEM);
362 ether_addr_copy(addr, fdb_info->addr);
363 work->fdb_info.addr = addr;
367 work->br_offloads = br_offloads;
372 static int mlx5_esw_bridge_switchdev_event(struct notifier_block *nb,
373 unsigned long event, void *ptr)
375 struct mlx5_esw_bridge_offloads *br_offloads = container_of(nb,
376 struct mlx5_esw_bridge_offloads,
378 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
379 struct switchdev_notifier_fdb_info *fdb_info;
380 struct mlx5_bridge_switchdev_fdb_work *work;
381 struct mlx5_eswitch *esw = br_offloads->esw;
382 struct switchdev_notifier_info *info = ptr;
383 u16 vport_num, esw_owner_vhca_id;
384 struct net_device *upper, *rep;
386 if (event == SWITCHDEV_PORT_ATTR_SET) {
387 int err = mlx5_esw_bridge_port_obj_attr_set(dev, ptr, br_offloads);
389 return notifier_from_errno(err);
392 upper = netdev_master_upper_dev_get_rcu(dev);
395 if (!netif_is_bridge_master(upper))
398 rep = mlx5_esw_bridge_rep_vport_num_vhca_id_get(dev, esw, &vport_num, &esw_owner_vhca_id);
403 case SWITCHDEV_FDB_ADD_TO_BRIDGE:
404 /* only handle the event on native eswtich of representor */
405 if (!mlx5_esw_bridge_is_local(dev, rep, esw))
408 fdb_info = container_of(info,
409 struct switchdev_notifier_fdb_info,
411 mlx5_esw_bridge_fdb_update_used(dev, vport_num, esw_owner_vhca_id, br_offloads,
414 case SWITCHDEV_FDB_DEL_TO_BRIDGE:
415 /* only handle the event on peers */
416 if (mlx5_esw_bridge_is_local(dev, rep, esw))
419 case SWITCHDEV_FDB_ADD_TO_DEVICE:
420 case SWITCHDEV_FDB_DEL_TO_DEVICE:
421 fdb_info = container_of(info,
422 struct switchdev_notifier_fdb_info,
425 work = mlx5_esw_bridge_init_switchdev_fdb_work(dev,
426 event == SWITCHDEV_FDB_ADD_TO_DEVICE,
430 WARN_ONCE(1, "Failed to init switchdev work, err=%ld",
432 return notifier_from_errno(PTR_ERR(work));
435 queue_work(br_offloads->wq, &work->work);
443 static void mlx5_esw_bridge_update_work(struct work_struct *work)
445 struct mlx5_esw_bridge_offloads *br_offloads = container_of(work,
446 struct mlx5_esw_bridge_offloads,
450 mlx5_esw_bridge_update(br_offloads);
453 queue_delayed_work(br_offloads->wq, &br_offloads->update_work,
454 msecs_to_jiffies(MLX5_ESW_BRIDGE_UPDATE_INTERVAL));
457 void mlx5e_rep_bridge_init(struct mlx5e_priv *priv)
459 struct mlx5_esw_bridge_offloads *br_offloads;
460 struct mlx5_core_dev *mdev = priv->mdev;
461 struct mlx5_eswitch *esw =
466 br_offloads = mlx5_esw_bridge_init(esw);
468 if (IS_ERR(br_offloads)) {
469 esw_warn(mdev, "Failed to init esw bridge (err=%ld)\n", PTR_ERR(br_offloads));
473 br_offloads->wq = alloc_ordered_workqueue("mlx5_bridge_wq", 0);
474 if (!br_offloads->wq) {
475 esw_warn(mdev, "Failed to allocate bridge offloads workqueue\n");
479 br_offloads->nb.notifier_call = mlx5_esw_bridge_switchdev_event;
480 err = register_switchdev_notifier(&br_offloads->nb);
482 esw_warn(mdev, "Failed to register switchdev notifier (err=%d)\n", err);
483 goto err_register_swdev;
486 br_offloads->nb_blk.notifier_call = mlx5_esw_bridge_event_blocking;
487 err = register_switchdev_blocking_notifier(&br_offloads->nb_blk);
489 esw_warn(mdev, "Failed to register blocking switchdev notifier (err=%d)\n", err);
490 goto err_register_swdev_blk;
493 br_offloads->netdev_nb.notifier_call = mlx5_esw_bridge_switchdev_port_event;
494 err = register_netdevice_notifier(&br_offloads->netdev_nb);
496 esw_warn(mdev, "Failed to register bridge offloads netdevice notifier (err=%d)\n",
498 goto err_register_netdev;
500 INIT_DELAYED_WORK(&br_offloads->update_work, mlx5_esw_bridge_update_work);
501 queue_delayed_work(br_offloads->wq, &br_offloads->update_work,
502 msecs_to_jiffies(MLX5_ESW_BRIDGE_UPDATE_INTERVAL));
506 unregister_switchdev_blocking_notifier(&br_offloads->nb_blk);
507 err_register_swdev_blk:
508 unregister_switchdev_notifier(&br_offloads->nb);
510 destroy_workqueue(br_offloads->wq);
512 mlx5_esw_bridge_cleanup(esw);
515 void mlx5e_rep_bridge_cleanup(struct mlx5e_priv *priv)
517 struct mlx5_esw_bridge_offloads *br_offloads;
518 struct mlx5_core_dev *mdev = priv->mdev;
519 struct mlx5_eswitch *esw =
522 br_offloads = esw->br_offloads;
526 cancel_delayed_work_sync(&br_offloads->update_work);
527 unregister_netdevice_notifier(&br_offloads->netdev_nb);
528 unregister_switchdev_blocking_notifier(&br_offloads->nb_blk);
529 unregister_switchdev_notifier(&br_offloads->nb);
530 destroy_workqueue(br_offloads->wq);
532 mlx5_esw_bridge_cleanup(esw);