sctp: Move sctp_v4_dst_saddr out of loop

There's no need to execute sctp_v4_dst_saddr() for each
iteration, just move it out of loop.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 13ee7fa92e07ff3341409ef1ff7039ae1bb36016..56bdaf7fc4257407cda3670d5453281c37212270 100644 (file)
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -470,11 +470,11 @@ static struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc,
                /* Walk through the bind address list and look for a bind
                 * address that matches the source address of the returned dst.
                 */
+               sctp_v4_dst_saddr(&dst_saddr, dst, htons(bp->port));
                rcu_read_lock();
                list_for_each_entry_rcu(laddr, &bp->address_list, list) {
                        if (!laddr->valid || (laddr->state != SCTP_ADDR_SRC))
                                continue;
-                       sctp_v4_dst_saddr(&dst_saddr, dst, htons(bp->port));
                        if (sctp_v4_cmp_addr(&dst_saddr, &laddr->a))
                                goto out_unlock;
                }