int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
struct ipv6_txoptions *opt, int ipfragok)
{
- struct ipv6_pinfo *np = sk ? inet6_sk(sk) : NULL;
+ struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_addr *first_hop = &fl->fl6_dst;
struct dst_entry *dst = skb->dst;
struct ipv6hdr *hdr;
if (*dst) {
struct rt6_info *rt = (struct rt6_info*)*dst;
- /* Yes, checking route validity in not connected
- case is not very simple. Take into account,
- that we do not support routing by source, TOS,
- and MSG_DONTROUTE --ANK (980726)
-
- 1. If route was host route, check that
- cached destination is current.
- If it is network route, we still may
- check its validity using saved pointer
- to the last used address: daddr_cache.
- We do not want to save whole address now,
- (because main consumer of this service
- is tcp, which has not this problem),
- so that the last trick works only on connected
- sockets.
- 2. oif also should be the same.
- */
-
+ /* Yes, checking route validity in not connected
+ * case is not very simple. Take into account,
+ * that we do not support routing by source, TOS,
+ * and MSG_DONTROUTE --ANK (980726)
+ *
+ * 1. If route was host route, check that
+ * cached destination is current.
+ * If it is network route, we still may
+ * check its validity using saved pointer
+ * to the last used address: daddr_cache.
+ * We do not want to save whole address now,
+ * (because main consumer of this service
+ * is tcp, which has not this problem),
+ * so that the last trick works only on connected
+ * sockets.
+ * 2. oif also should be the same.
+ */
if (((rt->rt6i_dst.plen != 128 ||
- !ipv6_addr_equal(&fl->fl6_dst, &rt->rt6i_dst.addr))
+ !ipv6_addr_equal(&fl->fl6_dst,
+ &rt->rt6i_dst.addr))
&& (np->daddr_cache == NULL ||
- !ipv6_addr_equal(&fl->fl6_dst, np->daddr_cache)))
+ !ipv6_addr_equal(&fl->fl6_dst,
+ np->daddr_cache)))
|| (fl->oif && fl->oif != (*dst)->dev->ifindex)) {
dst_release(*dst);
*dst = NULL;
np->cork.hop_limit = hlimit;
np->cork.tclass = tclass;
mtu = dst_mtu(rt->u.dst.path);
- if (np && np->frag_size < mtu) {
+ if (np->frag_size < mtu) {
if (np->frag_size)
mtu = np->frag_size;
}
if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) &&
(rt->u.dst.dev->features & NETIF_F_UFO)) {
- if(ip6_ufo_append_data(sk, getfrag, from, length, hh_len,
- fragheaderlen, transhdrlen, mtu, flags))
+ err = ip6_ufo_append_data(sk, getfrag, from, length, hh_len,
+ fragheaderlen, transhdrlen, mtu,
+ flags);
+ if (err)
goto error;
-
return 0;
}