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Diffstat (limited to 'net/bridge/br_fdb.c')
-rw-r--r--net/bridge/br_fdb.c60
1 files changed, 39 insertions, 21 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 698b79747d32..2b862cffc03a 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -440,9 +440,14 @@ int br_fdb_test_addr(struct net_device *dev, unsigned char *addr)
if (!port)
ret = 0;
else {
+ const struct net_bridge_port *dst = NULL;
+
fdb = br_fdb_find_rcu(port->br, addr, 0);
- ret = fdb && fdb->dst && fdb->dst->dev != dev &&
- fdb->dst->state == BR_STATE_FORWARDING;
+ if (fdb)
+ dst = READ_ONCE(fdb->dst);
+
+ ret = dst && dst->dev != dev &&
+ dst->state == BR_STATE_FORWARDING;
}
rcu_read_unlock();
@@ -509,7 +514,7 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
fdb = kmem_cache_alloc(br_fdb_cache, GFP_ATOMIC);
if (fdb) {
memcpy(fdb->key.addr.addr, addr, ETH_ALEN);
- fdb->dst = source;
+ WRITE_ONCE(fdb->dst, source);
fdb->key.vlan_id = vid;
fdb->flags = flags;
fdb->updated = fdb->used = jiffies;
@@ -600,10 +605,10 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
}
/* fastpath: update of existing entry */
- if (unlikely(source != fdb->dst &&
+ if (unlikely(source != READ_ONCE(fdb->dst) &&
!test_bit(BR_FDB_STICKY, &fdb->flags))) {
- br_switchdev_fdb_notify(fdb, RTM_DELNEIGH);
- fdb->dst = source;
+ br_switchdev_fdb_notify(br, fdb, RTM_DELNEIGH);
+ WRITE_ONCE(fdb->dst, source);
fdb_modified = true;
/* Take over HW learned entry */
if (unlikely(test_bit(BR_FDB_ADDED_BY_EXT_LEARN,
@@ -650,6 +655,7 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
const struct net_bridge_fdb_entry *fdb,
u32 portid, u32 seq, int type, unsigned int flags)
{
+ const struct net_bridge_port *dst = READ_ONCE(fdb->dst);
unsigned long now = jiffies;
struct nda_cacheinfo ci;
struct nlmsghdr *nlh;
@@ -665,7 +671,7 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
ndm->ndm_pad2 = 0;
ndm->ndm_flags = 0;
ndm->ndm_type = 0;
- ndm->ndm_ifindex = fdb->dst ? fdb->dst->dev->ifindex : br->dev->ifindex;
+ ndm->ndm_ifindex = dst ? dst->dev->ifindex : br->dev->ifindex;
ndm->ndm_state = fdb_to_nud(br, fdb);
if (test_bit(BR_FDB_OFFLOADED, &fdb->flags))
@@ -727,8 +733,9 @@ static inline size_t fdb_nlmsg_size(void)
}
static int br_fdb_replay_one(struct notifier_block *nb,
- struct net_bridge_fdb_entry *fdb,
- struct net_device *dev)
+ const struct net_bridge_fdb_entry *fdb,
+ struct net_device *dev, unsigned long action,
+ const void *ctx)
{
struct switchdev_notifier_fdb_info item;
int err;
@@ -737,35 +744,46 @@ static int br_fdb_replay_one(struct notifier_block *nb,
item.vid = fdb->key.vlan_id;
item.added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
item.offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags);
+ item.is_local = test_bit(BR_FDB_LOCAL, &fdb->flags);
item.info.dev = dev;
+ item.info.ctx = ctx;
- err = nb->notifier_call(nb, SWITCHDEV_FDB_ADD_TO_DEVICE, &item);
+ err = nb->notifier_call(nb, action, &item);
return notifier_to_errno(err);
}
-int br_fdb_replay(struct net_device *br_dev, struct net_device *dev,
- struct notifier_block *nb)
+int br_fdb_replay(const struct net_device *br_dev, const struct net_device *dev,
+ const void *ctx, bool adding, struct notifier_block *nb)
{
struct net_bridge_fdb_entry *fdb;
struct net_bridge *br;
+ unsigned long action;
int err = 0;
- if (!netif_is_bridge_master(br_dev) || !netif_is_bridge_port(dev))
+ if (!netif_is_bridge_master(br_dev))
+ return -EINVAL;
+
+ if (!netif_is_bridge_port(dev) && !netif_is_bridge_master(dev))
return -EINVAL;
br = netdev_priv(br_dev);
+ if (adding)
+ action = SWITCHDEV_FDB_ADD_TO_DEVICE;
+ else
+ action = SWITCHDEV_FDB_DEL_TO_DEVICE;
+
rcu_read_lock();
hlist_for_each_entry_rcu(fdb, &br->fdb_list, fdb_node) {
- struct net_bridge_port *dst = READ_ONCE(fdb->dst);
+ const struct net_bridge_port *dst = READ_ONCE(fdb->dst);
struct net_device *dst_dev;
dst_dev = dst ? dst->dev : br->dev;
if (dst_dev != br_dev && dst_dev != dev)
continue;
- err = br_fdb_replay_one(nb, fdb, dst_dev);
+ err = br_fdb_replay_one(nb, fdb, dst_dev, action, ctx);
if (err)
break;
}
@@ -785,7 +803,7 @@ static void fdb_notify(struct net_bridge *br,
int err = -ENOBUFS;
if (swdev_notify)
- br_switchdev_fdb_notify(fdb, type);
+ br_switchdev_fdb_notify(br, fdb, type);
skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
@@ -955,8 +973,8 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
if (flags & NLM_F_EXCL)
return -EEXIST;
- if (fdb->dst != source) {
- fdb->dst = source;
+ if (READ_ONCE(fdb->dst) != source) {
+ WRITE_ONCE(fdb->dst, source);
modified = true;
}
}
@@ -1123,7 +1141,7 @@ static int fdb_delete_by_addr_and_port(struct net_bridge *br,
struct net_bridge_fdb_entry *fdb;
fdb = br_fdb_find(br, addr, vlan);
- if (!fdb || fdb->dst != p)
+ if (!fdb || READ_ONCE(fdb->dst) != p)
return -ENOENT;
fdb_delete(br, fdb, true);
@@ -1272,8 +1290,8 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
} else {
fdb->updated = jiffies;
- if (fdb->dst != p) {
- fdb->dst = p;
+ if (READ_ONCE(fdb->dst) != p) {
+ WRITE_ONCE(fdb->dst, p);
modified = true;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-01 16:49:13 +0300