Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[powerpc.git] / net / ipv6 / ip6_output.c

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index efa3e72..d29620f 100644 (file)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -39,6 +39,7 @@
 #include <linux/in6.h>
 #include <linux/tcp.h>
 #include <linux/route.h>
+#include <linux/module.h>
 
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv6.h>
@@ -161,7 +162,7 @@ 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;
@@ -458,6 +459,7 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
        nf_bridge_get(to->nf_bridge);
 #endif
 #endif
+       skb_copy_secmark(to, from);
 }
 
 int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
@@ -488,12 +490,14 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
 
        return offset;
 }
+EXPORT_SYMBOL_GPL(ip6_find_1stfragopt);
 
 static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 {
        struct net_device *dev;
        struct sk_buff *frag;
        struct rt6_info *rt = (struct rt6_info*)skb->dst;
+       struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
        struct ipv6hdr *tmp_hdr;
        struct frag_hdr *fh;
        unsigned int mtu, hlen, left, len;
@@ -505,7 +509,12 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
        hlen = ip6_find_1stfragopt(skb, &prevhdr);
        nexthdr = *prevhdr;
 
-       mtu = dst_mtu(&rt->u.dst) - hlen - sizeof(struct frag_hdr);
+       mtu = dst_mtu(&rt->u.dst);
+       if (np && np->frag_size < mtu) {
+               if (np->frag_size)
+                       mtu = np->frag_size;
+       }
+       mtu -= hlen + sizeof(struct frag_hdr);
 
        if (skb_shinfo(skb)->frag_list) {
                int first_len = skb_pagelen(skb);
@@ -727,28 +736,29 @@ 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;
@@ -882,7 +892,12 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                inet->cork.fl = *fl;
                np->cork.hop_limit = hlimit;
                np->cork.tclass = tclass;
-               inet->cork.fragsize = mtu = dst_mtu(rt->u.dst.path);
+               mtu = dst_mtu(rt->u.dst.path);
+               if (np->frag_size < mtu) {
+                       if (np->frag_size)
+                               mtu = np->frag_size;
+               }
+               inet->cork.fragsize = mtu;
                if (dst_allfrag(rt->u.dst.path))
                        inet->cork.flags |= IPCORK_ALLFRAG;
                inet->cork.length = 0;
@@ -933,10 +948,11 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
        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;
        }