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authorArnaldo Carvalho de Melo <acme@mandriva.com>2005-12-13 23:22:54 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-03 13:10:46 -0800
commitb9750ce13c08aa8a71a9b138d741f3046aefd991 (patch)
tree08b2b842ece908bf63c104bbcb12e8b78c69288d /net/ipv6/af_inet6.c
parent830a1e5c212fb3fdc83b66359c780c3b3a294897 (diff)
[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>
Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index d9546380fa0..fd040e9a1f4 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -609,6 +609,58 @@ inet6_unregister_protosw(struct inet_protosw *p)
}
}
+int inet6_sk_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 = sk->sk_protocol;
+ 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;
+}
+
+EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
+
int
snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
{