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Diffstat (limited to 'net/bridge/br_fdb.c')
-rw-r--r--net/bridge/br_fdb.c69
1 files changed, 48 insertions, 21 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index d9e69e4514beb..b19e3104afd6b 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -40,7 +40,7 @@ static struct kmem_cache *br_fdb_cache __read_mostly;
static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
const unsigned char *addr, u16 vid);
static void fdb_notify(struct net_bridge *br,
- const struct net_bridge_fdb_entry *, int);
+ const struct net_bridge_fdb_entry *, int, bool);
int __init br_fdb_init(void)
{
@@ -121,6 +121,28 @@ static struct net_bridge_fdb_entry *br_fdb_find(struct net_bridge *br,
return fdb;
}
+struct net_device *br_fdb_find_port(const struct net_device *br_dev,
+ const unsigned char *addr,
+ __u16 vid)
+{
+ struct net_bridge_fdb_entry *f;
+ struct net_device *dev = NULL;
+ struct net_bridge *br;
+
+ ASSERT_RTNL();
+
+ if (!netif_is_bridge_master(br_dev))
+ return NULL;
+
+ br = netdev_priv(br_dev);
+ f = br_fdb_find(br, addr, vid);
+ if (f && f->dst)
+ dev = f->dst->dev;
+
+ return dev;
+}
+EXPORT_SYMBOL_GPL(br_fdb_find_port);
+
struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
const unsigned char *addr,
__u16 vid)
@@ -173,7 +195,8 @@ static void fdb_del_hw_addr(struct net_bridge *br, const unsigned char *addr)
}
}
-static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
+static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f,
+ bool swdev_notify)
{
trace_fdb_delete(br, f);
@@ -183,7 +206,7 @@ static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
hlist_del_init_rcu(&f->fdb_node);
rhashtable_remove_fast(&br->fdb_hash_tbl, &f->rhnode,
br_fdb_rht_params);
- fdb_notify(br, f, RTM_DELNEIGH);
+ fdb_notify(br, f, RTM_DELNEIGH, swdev_notify);
call_rcu(&f->rcu, fdb_rcu_free);
}
@@ -219,7 +242,7 @@ static void fdb_delete_local(struct net_bridge *br,
return;
}
- fdb_delete(br, f);
+ fdb_delete(br, f, true);
}
void br_fdb_find_delete_local(struct net_bridge *br,
@@ -334,7 +357,7 @@ void br_fdb_cleanup(struct work_struct *work)
} else {
spin_lock_bh(&br->hash_lock);
if (!hlist_unhashed(&f->fdb_node))
- fdb_delete(br, f);
+ fdb_delete(br, f, true);
spin_unlock_bh(&br->hash_lock);
}
}
@@ -354,7 +377,7 @@ void br_fdb_flush(struct net_bridge *br)
spin_lock_bh(&br->hash_lock);
hlist_for_each_entry_safe(f, tmp, &br->fdb_list, fdb_node) {
if (!f->is_static)
- fdb_delete(br, f);
+ fdb_delete(br, f, true);
}
spin_unlock_bh(&br->hash_lock);
}
@@ -383,7 +406,7 @@ void br_fdb_delete_by_port(struct net_bridge *br,
if (f->is_local)
fdb_delete_local(br, p, f);
else
- fdb_delete(br, f);
+ fdb_delete(br, f, true);
}
spin_unlock_bh(&br->hash_lock);
}
@@ -509,7 +532,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
return 0;
br_warn(br, "adding interface %s with same address as a received packet (addr:%pM, vlan:%u)\n",
source ? source->dev->name : br->dev->name, addr, vid);
- fdb_delete(br, fdb);
+ fdb_delete(br, fdb, true);
}
fdb = fdb_create(br, source, addr, vid, 1, 1);
@@ -517,7 +540,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
return -ENOMEM;
fdb_add_hw_addr(br, addr);
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, true);
return 0;
}
@@ -572,7 +595,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
fdb->added_by_user = 1;
if (unlikely(fdb_modified)) {
trace_br_fdb_update(br, source, addr, vid, added_by_user);
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, true);
}
}
} else {
@@ -583,7 +606,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
fdb->added_by_user = 1;
trace_br_fdb_update(br, source, addr, vid,
added_by_user);
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, true);
}
/* else we lose race and someone else inserts
* it first, don't bother updating
@@ -665,13 +688,15 @@ static inline size_t fdb_nlmsg_size(void)
}
static void fdb_notify(struct net_bridge *br,
- const struct net_bridge_fdb_entry *fdb, int type)
+ const struct net_bridge_fdb_entry *fdb, int type,
+ bool swdev_notify)
{
struct net *net = dev_net(br->dev);
struct sk_buff *skb;
int err = -ENOBUFS;
- br_switchdev_fdb_notify(fdb, type);
+ if (swdev_notify)
+ br_switchdev_fdb_notify(fdb, type);
skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
if (skb == NULL)
@@ -810,7 +835,7 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
fdb->used = jiffies;
if (modified) {
fdb->updated = jiffies;
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, true);
}
return 0;
@@ -834,7 +859,7 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge *br,
rcu_read_unlock();
local_bh_enable();
} else if (ndm->ndm_flags & NTF_EXT_LEARNED) {
- err = br_fdb_external_learn_add(br, p, addr, vid);
+ err = br_fdb_external_learn_add(br, p, addr, vid, true);
} else {
spin_lock_bh(&br->hash_lock);
err = fdb_add_entry(br, p, addr, ndm->ndm_state,
@@ -923,7 +948,7 @@ static int fdb_delete_by_addr_and_port(struct net_bridge *br,
if (!fdb || fdb->dst != p)
return -ENOENT;
- fdb_delete(br, fdb);
+ fdb_delete(br, fdb, true);
return 0;
}
@@ -1043,7 +1068,8 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
}
int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
- const unsigned char *addr, u16 vid)
+ const unsigned char *addr, u16 vid,
+ bool swdev_notify)
{
struct net_bridge_fdb_entry *fdb;
bool modified = false;
@@ -1061,7 +1087,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
goto err_unlock;
}
fdb->added_by_external_learn = 1;
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify);
} else {
fdb->updated = jiffies;
@@ -1080,7 +1106,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
}
if (modified)
- fdb_notify(br, fdb, RTM_NEWNEIGH);
+ fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify);
}
err_unlock:
@@ -1090,7 +1116,8 @@ err_unlock:
}
int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
- const unsigned char *addr, u16 vid)
+ const unsigned char *addr, u16 vid,
+ bool swdev_notify)
{
struct net_bridge_fdb_entry *fdb;
int err = 0;
@@ -1099,7 +1126,7 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
fdb = br_fdb_find(br, addr, vid);
if (fdb && fdb->added_by_external_learn)
- fdb_delete(br, fdb);
+ fdb_delete(br, fdb, swdev_notify);
else
err = -ENOENT;
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 01:26:34 +0000