[DCCP]: Introduce DCCPv6

Still needs mucho polishing, specially in the checksum code, but works
just fine, inet_diag/iproute2 and all 8)

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

1 files changed, 12 insertions, 1 deletions

diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
index 5c767b5e9a52..29261fc198e7 100644
--- a/net/dccp/minisocks.c
+++ b/net/dccp/minisocks.c
@@ -52,7 +52,18 @@ void dccp_time_wait(struct sock *sk, int state, int timeo)
         if (tw != NULL) {
                 const struct inet_connection_sock *icsk = inet_csk(sk);
                 const int rto = (icsk->icsk_rto << 2) - (icsk->icsk_rto >> 1);
-
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+                if (tw->tw_family == PF_INET6) {
+                        const struct ipv6_pinfo *np = inet6_sk(sk);
+                        struct inet6_timewait_sock *tw6;
+
+                        tw->tw_ipv6_offset = inet6_tw_offset(sk->sk_prot);
+                        tw6 = inet6_twsk((struct sock *)tw);
+                        ipv6_addr_copy(&tw6->tw_v6_daddr, &np->daddr);
+                        ipv6_addr_copy(&tw6->tw_v6_rcv_saddr, &np->rcv_saddr);
+                        tw->tw_ipv6only = np->ipv6only;
+                }
+#endif
                 /* Linkage updates. */
                 __inet_twsk_hashdance(tw, sk, &dccp_hashinfo);