[IPV4,IPV6]: Share cork.rt between IPv4 and IPv6.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 4aaefc349a4b1d8d2cac828c0737c0a60a35a10d..2102d8b67c015d22b8f71ed80fdc62b142419cf6 100644 (file)
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -315,7 +315,6 @@ struct ipv6_pinfo {
        struct sk_buff          *pktoptions;
        struct {
                struct ipv6_txoptions *opt;
-               struct rt6_info *rt;
                int hop_limit;
                int tclass;
        } cork;

diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index b6db16d2766a5ebb84547e20301b62b58fde26ee..a42cd63d241a1d96ac3f8bcac099a255ccbf2bbd 100644 (file)
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -136,7 +136,7 @@ struct inet_sock {
                unsigned int            flags;
                unsigned int            fragsize;
                struct ip_options       *opt;
-               struct rtable           *rt;
+               struct dst_entry        *dst;
                int                     length; /* Total length of all frames */
                __be32                  addr;
                struct flowi            fl;

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 349fae58c1a3e1cf28bd054fc619bc9176c95707..913266cd9902c3fe9b0ff51d258c1fd315849fda 100644 (file)
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -825,7 +825,7 @@ int ip_append_data(struct sock *sk,
                inet->cork.fragsize = mtu = inet->pmtudisc == IP_PMTUDISC_PROBE ?
                                            rt->u.dst.dev->mtu :
                                            dst_mtu(rt->u.dst.path);
-               inet->cork.rt = rt;
+               inet->cork.dst = &rt->u.dst;
                inet->cork.length = 0;
                sk->sk_sndmsg_page = NULL;
                sk->sk_sndmsg_off = 0;
@@ -834,7 +834,7 @@ int ip_append_data(struct sock *sk,
                        transhdrlen += exthdrlen;
                }
        } else {
-               rt = inet->cork.rt;
+               rt = (struct rtable *)inet->cork.dst;
                if (inet->cork.flags & IPCORK_OPT)
                        opt = inet->cork.opt;
 
@@ -1083,7 +1083,7 @@ ssize_t   ip_append_page(struct sock *sk, struct page *page,
        if (skb_queue_empty(&sk->sk_write_queue))
                return -EINVAL;
 
-       rt = inet->cork.rt;
+       rt = (struct rtable *)inet->cork.dst;
        if (inet->cork.flags & IPCORK_OPT)
                opt = inet->cork.opt;
 
@@ -1208,10 +1208,8 @@ static void ip_cork_release(struct inet_sock *inet)
        inet->cork.flags &= ~IPCORK_OPT;
        kfree(inet->cork.opt);
        inet->cork.opt = NULL;
-       if (inet->cork.rt) {
-               ip_rt_put(inet->cork.rt);
-               inet->cork.rt = NULL;
-       }
+       dst_release(inet->cork.dst);
+       inet->cork.dst = NULL;
 }
 
 /*
@@ -1224,7 +1222,7 @@ int ip_push_pending_frames(struct sock *sk)
        struct sk_buff **tail_skb;
        struct inet_sock *inet = inet_sk(sk);
        struct ip_options *opt = NULL;
-       struct rtable *rt = inet->cork.rt;
+       struct rtable *rt = (struct rtable *)inet->cork.dst;
        struct iphdr *iph;
        __be16 df = 0;
        __u8 ttl;

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 98762fde2b65bb7714d46117d312a6d5b1ae91cd..ed6482667a256f803df1f3dbd804158bf5b02792 100644 (file)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1115,7 +1115,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                        /* need source address above miyazawa*/
                }
                dst_hold(&rt->u.dst);
-               np->cork.rt = rt;
+               inet->cork.dst = &rt->u.dst;
                inet->cork.fl = *fl;
                np->cork.hop_limit = hlimit;
                np->cork.tclass = tclass;
@@ -1136,7 +1136,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                length += exthdrlen;
                transhdrlen += exthdrlen;
        } else {
-               rt = np->cork.rt;
+               rt = (struct rt6_info *)inet->cork.dst;
                fl = &inet->cork.fl;
                if (inet->cork.flags & IPCORK_OPT)
                        opt = np->cork.opt;
@@ -1381,9 +1381,9 @@ static void ip6_cork_release(struct inet_sock *inet, struct ipv6_pinfo *np)
        inet->cork.flags &= ~IPCORK_OPT;
        kfree(np->cork.opt);
        np->cork.opt = NULL;
-       if (np->cork.rt) {
-               dst_release(&np->cork.rt->u.dst);
-               np->cork.rt = NULL;
+       if (inet->cork.dst) {
+               dst_release(inet->cork.dst);
+               inet->cork.dst = NULL;
                inet->cork.flags &= ~IPCORK_ALLFRAG;
        }
        memset(&inet->cork.fl, 0, sizeof(inet->cork.fl));
@@ -1398,7 +1398,7 @@ int ip6_push_pending_frames(struct sock *sk)
        struct ipv6_pinfo *np = inet6_sk(sk);
        struct ipv6hdr *hdr;
        struct ipv6_txoptions *opt = np->cork.opt;
-       struct rt6_info *rt = np->cork.rt;
+       struct rt6_info *rt = (struct rt6_info *)inet->cork.dst;
        struct flowi *fl = &inet->cork.fl;
        unsigned char proto = fl->proto;
        int err = 0;