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authorwangweidong <wangweidong1@huawei.com>2013-12-26 13:55:56 +0800
committerDavid S. Miller <davem@davemloft.net>2013-12-31 14:31:44 -0500
commit0438816efd86c764d5544bf52e769604062316b3 (patch)
treef7d505f16aec9a072e934dbc8dc2c79c4fd229cd /net/sctp/output.c
parent6a031f67c83aa175aedd10d4ae64750415ab57b0 (diff)
downloadlinux-0438816efd86c764d5544bf52e769604062316b3.tar.bz2
sctp: move skb_dst_set() a bit downwards in sctp_packet_transmit()
skb_dst_set will use dst, if dst is NULL although is not a problem, then goto the 'no_route' and free nskb, so do the skb_dst_set is pointless. so move the skb_dst_set after dst check. Remove the unnecessary initialization as well. v2: fix the subject line because it would confuse people, as pointed out by Daniel. Signed-off-by: Wang Weidong <wangweidong1@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/output.c')
-rw-r--r--net/sctp/output.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c
index b971cd226cf5..0f4d15fc2627 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -387,7 +387,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
int err = 0;
int padding; /* How much padding do we need? */
__u8 has_data = 0;
- struct dst_entry *dst = tp->dst;
+ struct dst_entry *dst;
unsigned char *auth = NULL; /* pointer to auth in skb data */
pr_debug("%s: packet:%p\n", __func__, packet);
@@ -420,9 +420,9 @@ int sctp_packet_transmit(struct sctp_packet *packet)
}
}
dst = dst_clone(tp->dst);
- skb_dst_set(nskb, dst);
if (!dst)
goto no_route;
+ skb_dst_set(nskb, dst);
/* Build the SCTP header. */
sh = (struct sctphdr *)skb_push(nskb, sizeof(struct sctphdr));