[IPV6]: Generalise some functions

Using sk->sk_protocol instead of IPPROTO_TCP.

Will be used by DCCPv6 in the next changesets.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 149 deletions

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 8ce8a1359d2b..2f932ce72610 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -72,32 +72,10 @@ static void	tcp_v6_send_check(struct sock *sk, int len,
                                   struct sk_buff *skb);
 
 static int      tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
-static int      tcp_v6_xmit(struct sk_buff *skb, int ipfragok);
 
 static struct inet_connection_sock_af_ops ipv6_mapped;
 static struct inet_connection_sock_af_ops ipv6_specific;
 
-int inet6_csk_bind_conflict(const struct sock *sk,
-                            const struct inet_bind_bucket *tb)
-{
-        const struct sock *sk2;
-        const struct hlist_node *node;
-
-        /* We must walk the whole port owner list in this case. -DaveM */
-        sk_for_each_bound(sk2, node, &tb->owners) {
-                if (sk != sk2 &&
-                    (!sk->sk_bound_dev_if ||
-                     !sk2->sk_bound_dev_if ||
-                     sk->sk_bound_dev_if == sk2->sk_bound_dev_if) &&
-                    (!sk->sk_reuse || !sk2->sk_reuse ||
-                     sk2->sk_state == TCP_LISTEN) &&
-                     ipv6_rcv_saddr_equal(sk, sk2))
-                        break;
-        }
-
-        return node != NULL;
-}
-
 static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
 {
         return inet_csk_get_port(&tcp_hashinfo, sk, snum,
@@ -1500,129 +1478,6 @@ do_time_wait:
         goto discard_it;
 }
 
-static int tcp_v6_rebuild_header(struct sock *sk)
-{
-        int err;
-        struct dst_entry *dst;
-        struct ipv6_pinfo *np = inet6_sk(sk);
-
-        dst = __sk_dst_check(sk, np->dst_cookie);
-
-        if (dst == NULL) {
-                struct inet_sock *inet = inet_sk(sk);
-                struct in6_addr *final_p = NULL, final;
-                struct flowi fl;
-
-                memset(&fl, 0, sizeof(fl));
-                fl.proto = IPPROTO_TCP;
-                ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-                ipv6_addr_copy(&fl.fl6_src, &np->saddr);
-                fl.fl6_flowlabel = np->flow_label;
-                fl.oif = sk->sk_bound_dev_if;
-                fl.fl_ip_dport = inet->dport;
-                fl.fl_ip_sport = inet->sport;
-
-                if (np->opt && np->opt->srcrt) {
-                        struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
-                        ipv6_addr_copy(&final, &fl.fl6_dst);
-                        ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
-                        final_p = &final;
-                }
-
-                err = ip6_dst_lookup(sk, &dst, &fl);
-                if (err) {
-                        sk->sk_route_caps = 0;
-                        return err;
-                }
-                if (final_p)
-                        ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
-                        sk->sk_err_soft = -err;
-                        return err;
-                }
-
-                ip6_dst_store(sk, dst, NULL);
-                sk->sk_route_caps = dst->dev->features &
-                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
-        }
-
-        return 0;
-}
-
-static int tcp_v6_xmit(struct sk_buff *skb, int ipfragok)
-{
-        struct sock *sk = skb->sk;
-        struct inet_sock *inet = inet_sk(sk);
-        struct ipv6_pinfo *np = inet6_sk(sk);
-        struct flowi fl;
-        struct dst_entry *dst;
-        struct in6_addr *final_p = NULL, final;
-
-        memset(&fl, 0, sizeof(fl));
-        fl.proto = IPPROTO_TCP;
-        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-        ipv6_addr_copy(&fl.fl6_src, &np->saddr);
-        fl.fl6_flowlabel = np->flow_label;
-        IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
-        fl.oif = sk->sk_bound_dev_if;
-        fl.fl_ip_sport = inet->sport;
-        fl.fl_ip_dport = inet->dport;
-
-        if (np->opt && np->opt->srcrt) {
-                struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
-                ipv6_addr_copy(&final, &fl.fl6_dst);
-                ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
-                final_p = &final;
-        }
-
-        dst = __sk_dst_check(sk, np->dst_cookie);
-
-        if (dst == NULL) {
-                int err = ip6_dst_lookup(sk, &dst, &fl);
-
-                if (err) {
-                        sk->sk_err_soft = -err;
-                        return err;
-                }
-
-                if (final_p)
-                        ipv6_addr_copy(&fl.fl6_dst, final_p);
-
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
-                        sk->sk_route_caps = 0;
-                        return err;
-                }
-
-                ip6_dst_store(sk, dst, NULL);
-                sk->sk_route_caps = dst->dev->features &
-                        ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
-        }
-
-        skb->dst = dst_clone(dst);
-
-        /* Restore final destination back after routing done */
-        ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
-
-        return ip6_xmit(sk, skb, &fl, np->opt, 0);
-}
-
-static void v6_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
-{
-        struct ipv6_pinfo *np = inet6_sk(sk);
-        struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) uaddr;
-
-        sin6->sin6_family = AF_INET6;
-        ipv6_addr_copy(&sin6->sin6_addr, &np->daddr);
-        sin6->sin6_port = inet_sk(sk)->dport;
-        /* We do not store received flowlabel for TCP */
-        sin6->sin6_flowinfo = 0;
-        sin6->sin6_scope_id = 0;
-        if (sk->sk_bound_dev_if &&
-            ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
-                sin6->sin6_scope_id = sk->sk_bound_dev_if;
-}
-
 static int tcp_v6_remember_stamp(struct sock *sk)
 {
         /* Alas, not yet... */
@@ -1630,9 +1485,9 @@ static int tcp_v6_remember_stamp(struct sock *sk)
 }
 
 static struct inet_connection_sock_af_ops ipv6_specific = {
-        .queue_xmit     =       tcp_v6_xmit,
+        .queue_xmit     =       inet6_csk_xmit,
         .send_check     =       tcp_v6_send_check,
-        .rebuild_header =       tcp_v6_rebuild_header,
+        .rebuild_header =       inet6_sk_rebuild_header,
         .conn_request   =       tcp_v6_conn_request,
         .syn_recv_sock  =       tcp_v6_syn_recv_sock,
         .remember_stamp =       tcp_v6_remember_stamp,
@@ -1640,7 +1495,7 @@ static struct inet_connection_sock_af_ops ipv6_specific = {
 
         .setsockopt     =       ipv6_setsockopt,
         .getsockopt     =       ipv6_getsockopt,
-        .addr2sockaddr  =       v6_addr2sockaddr,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
         .sockaddr_len   =       sizeof(struct sockaddr_in6)
 };
 
@@ -1659,7 +1514,7 @@ static struct inet_connection_sock_af_ops ipv6_mapped = {
 
         .setsockopt     =       ipv6_setsockopt,
         .getsockopt     =       ipv6_getsockopt,
-        .addr2sockaddr  =       v6_addr2sockaddr,
+        .addr2sockaddr  =       inet6_csk_addr2sockaddr,
         .sockaddr_len   =       sizeof(struct sockaddr_in6)
 };