diff options
Diffstat (limited to 'net/ipv6/ip6_output.c')
-rw-r--r-- | net/ipv6/ip6_output.c | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 5bf70b1442ea..e46048974f37 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -161,7 +161,7 @@ int ip6_output(struct sk_buff *skb) 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; @@ -733,28 +733,29 @@ int ip6_dst_lookup(struct sock *sk, struct dst_entry **dst, struct flowi *fl) 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; @@ -889,7 +890,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, 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; } |