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-rw-r--r--net/bridge/br_forward.c33
-rw-r--r--net/bridge/br_input.c5
-rw-r--r--net/bridge/br_private.h3
3 files changed, 25 insertions, 16 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index bc1704ac6cd9..6cd50c6e57cf 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -105,8 +105,9 @@ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
/* called under bridge lock */
static void br_flood(struct net_bridge *br, struct sk_buff *skb,
- void (*__packet_hook)(const struct net_bridge_port *p,
- struct sk_buff *skb))
+ struct sk_buff *skb0,
+ void (*__packet_hook)(const struct net_bridge_port *p,
+ struct sk_buff *skb))
{
struct net_bridge_port *p;
struct net_bridge_port *prev;
@@ -120,8 +121,7 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) {
br->dev->stats.tx_dropped++;
- kfree_skb(skb);
- return;
+ goto out;
}
__packet_hook(prev, skb2);
@@ -131,23 +131,34 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
}
}
- if (prev != NULL) {
- __packet_hook(prev, skb);
- return;
+ if (!prev)
+ goto out;
+
+ if (skb0) {
+ skb = skb_clone(skb, GFP_ATOMIC);
+ if (!skb) {
+ br->dev->stats.tx_dropped++;
+ goto out;
+ }
}
+ __packet_hook(prev, skb);
+ return;
- kfree_skb(skb);
+out:
+ if (!skb0)
+ kfree_skb(skb);
}
/* called with rcu_read_lock */
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb)
{
- br_flood(br, skb, __br_deliver);
+ br_flood(br, skb, NULL, __br_deliver);
}
/* called under bridge lock */
-void br_flood_forward(struct net_bridge *br, struct sk_buff *skb)
+void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+ struct sk_buff *skb2)
{
- br_flood(br, skb, __br_forward);
+ br_flood(br, skb, skb2, __br_forward);
}
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index be5ab8df6661..edfdaef44296 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -72,14 +72,11 @@ int br_handle_frame_finish(struct sk_buff *skb)
skb = NULL;
}
- if (skb2 == skb)
- skb2 = skb_clone(skb, GFP_ATOMIC);
-
if (skb) {
if (dst)
br_forward(dst->dst, skb);
else
- br_flood_forward(br, skb);
+ br_flood_forward(br, skb, skb2);
}
if (skb2)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 16513793156e..fad5a2669d34 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -180,7 +180,8 @@ extern void br_forward(const struct net_bridge_port *to,
struct sk_buff *skb);
extern int br_forward_finish(struct sk_buff *skb);
extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
-extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb);
+extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+ struct sk_buff *skb2);
/* br_if.c */
extern void br_port_carrier_check(struct net_bridge_port *p);