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Diffstat (limited to 'net/ipv6/ip6_output.c')
-rw-r--r--net/ipv6/ip6_output.c64
1 files changed, 32 insertions, 32 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 0e844c2736a7..3df2c442d90b 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -943,39 +943,39 @@ static int ip6_dst_lookup_tail(struct sock *sk,
943 } 943 }
944 944
945#ifdef CONFIG_IPV6_OPTIMISTIC_DAD 945#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
946 /* 946 /*
947 * Here if the dst entry we've looked up 947 * Here if the dst entry we've looked up
948 * has a neighbour entry that is in the INCOMPLETE 948 * has a neighbour entry that is in the INCOMPLETE
949 * state and the src address from the flow is 949 * state and the src address from the flow is
950 * marked as OPTIMISTIC, we release the found 950 * marked as OPTIMISTIC, we release the found
951 * dst entry and replace it instead with the 951 * dst entry and replace it instead with the
952 * dst entry of the nexthop router 952 * dst entry of the nexthop router
953 */ 953 */
954 if (!((*dst)->neighbour->nud_state & NUD_VALID)) { 954 if ((*dst)->neighbour && !((*dst)->neighbour->nud_state & NUD_VALID)) {
955 struct inet6_ifaddr *ifp; 955 struct inet6_ifaddr *ifp;
956 struct flowi fl_gw; 956 struct flowi fl_gw;
957 int redirect; 957 int redirect;
958 958
959 ifp = ipv6_get_ifaddr(net, &fl->fl6_src, 959 ifp = ipv6_get_ifaddr(net, &fl->fl6_src,
960 (*dst)->dev, 1); 960 (*dst)->dev, 1);
961 961
962 redirect = (ifp && ifp->flags & IFA_F_OPTIMISTIC); 962 redirect = (ifp && ifp->flags & IFA_F_OPTIMISTIC);
963 if (ifp) 963 if (ifp)
964 in6_ifa_put(ifp); 964 in6_ifa_put(ifp);
965 965
966 if (redirect) { 966 if (redirect) {
967 /* 967 /*
968 * We need to get the dst entry for the 968 * We need to get the dst entry for the
969 * default router instead 969 * default router instead
970 */ 970 */
971 dst_release(*dst); 971 dst_release(*dst);
972 memcpy(&fl_gw, fl, sizeof(struct flowi)); 972 memcpy(&fl_gw, fl, sizeof(struct flowi));
973 memset(&fl_gw.fl6_dst, 0, sizeof(struct in6_addr)); 973 memset(&fl_gw.fl6_dst, 0, sizeof(struct in6_addr));
974 *dst = ip6_route_output(net, sk, &fl_gw); 974 *dst = ip6_route_output(net, sk, &fl_gw);
975 if ((err = (*dst)->error)) 975 if ((err = (*dst)->error))
976 goto out_err_release; 976 goto out_err_release;
977 }
978 } 977 }
978 }
979#endif 979#endif
980 980
981 return 0; 981 return 0;