ipv6: delete useless dst check in ip6_dst_lookup_tail

parameter dst always points to null.

Signed-off-by: zhang kai <zhangkaiheb@126.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 497974b..984050f 100644 (file)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1055,13 +1055,11 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk,
         * ip6_route_output will fail given src=any saddr, though, so
         * that's why we try it again later.
         */
-       if (ipv6_addr_any(&fl6->saddr) && (!*dst || !(*dst)->error)) {
+       if (ipv6_addr_any(&fl6->saddr)) {
                struct fib6_info *from;
                struct rt6_info *rt;
-               bool had_dst = *dst != NULL;
 
-               if (!had_dst)
-                       *dst = ip6_route_output(net, sk, fl6);
+               *dst = ip6_route_output(net, sk, fl6);
                rt = (*dst)->error ? NULL : (struct rt6_info *)*dst;
 
                rcu_read_lock();
@@ -1078,7 +1076,7 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk,
                 * never existed and let the SA-enabled version take
                 * over.
                 */
-               if (!had_dst && (*dst)->error) {
+               if ((*dst)->error) {
                        dst_release(*dst);
                        *dst = NULL;
                }