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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2008-12-14 23:17:26 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-14 23:17:26 -0800
commit0eae1b98cf3022715b5a6ea5f1ac6b0bd7ac4edd (patch)
tree874de569a7859f855296ee3857ad4214fcbaed29 /net/ax25
parentebad5c0984e06f4036d2eb2741b9afce736b8a06 (diff)
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ax25: join the return paths that free skb
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ax25')
-rw-r--r--net/ax25/ax25_in.c41
1 files changed, 15 insertions, 26 deletions
diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 4a5ba97..5f1d210 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -200,19 +200,15 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
skb_reset_transport_header(skb);
- if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL) {
- kfree_skb(skb);
- return 0;
- }
+ if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
+ goto free;
/*
* Parse the address header.
*/
- if (ax25_addr_parse(skb->data, skb->len, &src, &dest, &dp, &type, &dama) == NULL) {
- kfree_skb(skb);
- return 0;
- }
+ if (ax25_addr_parse(skb->data, skb->len, &src, &dest, &dp, &type, &dama) == NULL)
+ goto free;
/*
* Ours perhaps ?
@@ -239,10 +235,8 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
ax25_send_to_raw(&dest, skb, skb->data[1]);
- if (!mine && ax25cmp(&dest, (ax25_address *)dev->broadcast) != 0) {
- kfree_skb(skb);
- return 0;
- }
+ if (!mine && ax25cmp(&dest, (ax25_address *)dev->broadcast) != 0)
+ goto free;
/* Now we are pointing at the pid byte */
switch (skb->data[1]) {
@@ -301,10 +295,8 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
* If not, should we DM the incoming frame (except DMs) or
* silently ignore them. For now we stay quiet.
*/
- if (ax25_dev->values[AX25_VALUES_CONMODE] == 0) {
- kfree_skb(skb);
- return 0;
- }
+ if (ax25_dev->values[AX25_VALUES_CONMODE] == 0)
+ goto free;
/* LAPB */
@@ -339,8 +331,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
if ((*skb->data & ~AX25_PF) != AX25_DM && mine)
ax25_return_dm(dev, &src, &dest, &dp);
- kfree_skb(skb);
- return 0;
+ goto free;
}
/* b) received SABM(E) */
@@ -372,15 +363,12 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
sk->sk_ack_backlog++;
bh_unlock_sock(sk);
} else {
- if (!mine) {
- kfree_skb(skb);
- return 0;
- }
+ if (!mine)
+ goto free;
if ((ax25 = ax25_create_cb()) == NULL) {
ax25_return_dm(dev, &src, &dest, &dp);
- kfree_skb(skb);
- return 0;
+ goto free;
}
ax25_fillin_cb(ax25, ax25_dev);
@@ -436,9 +424,10 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_data_ready(sk, skb->len);
sock_put(sk);
- } else
+ } else {
+free:
kfree_skb(skb);
-
+ }
return 0;
}