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-rw-r--r--net/sctp/ipv6.c42
1 files changed, 12 insertions, 30 deletions
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 0bb0d7cb9f1..609adfa894a 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -203,45 +203,22 @@ out:
in6_dev_put(idev);
}
-/* Based on tcp_v6_xmit() in tcp_ipv6.c. */
static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
{
struct sock *sk = skb->sk;
struct ipv6_pinfo *np = inet6_sk(sk);
- struct flowi6 fl6;
-
- memset(&fl6, 0, sizeof(fl6));
-
- fl6.flowi6_proto = sk->sk_protocol;
-
- /* Fill in the dest address from the route entry passed with the skb
- * and the source address from the transport.
- */
- ipv6_addr_copy(&fl6.daddr, &transport->ipaddr.v6.sin6_addr);
- ipv6_addr_copy(&fl6.saddr, &transport->saddr.v6.sin6_addr);
-
- fl6.flowlabel = np->flow_label;
- IP6_ECN_flow_xmit(sk, fl6.flowlabel);
- if (ipv6_addr_type(&fl6.saddr) & IPV6_ADDR_LINKLOCAL)
- fl6.flowi6_oif = transport->saddr.v6.sin6_scope_id;
- else
- fl6.flowi6_oif = sk->sk_bound_dev_if;
-
- if (np->opt && np->opt->srcrt) {
- struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
- ipv6_addr_copy(&fl6.daddr, rt0->addr);
- }
+ struct flowi6 *fl6 = &transport->fl.u.ip6;
SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, src:%pI6 dst:%pI6\n",
__func__, skb, skb->len,
- &fl6.saddr, &fl6.daddr);
-
- SCTP_INC_STATS(SCTP_MIB_OUTSCTPPACKS);
+ &fl6->saddr, &fl6->daddr);
if (!(transport->param_flags & SPP_PMTUD_ENABLE))
skb->local_df = 1;
- return ip6_xmit(sk, skb, &fl6, np->opt);
+ SCTP_INC_STATS(SCTP_MIB_OUTSCTPPACKS);
+
+ return ip6_xmit(sk, skb, fl6, np->opt);
}
/* Returns the dst cache entry for the given source and destination ip
@@ -254,10 +231,12 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
struct dst_entry *dst = NULL;
struct flowi6 *fl6 = &fl->u.ip6;
struct sctp_bind_addr *bp;
+ struct ipv6_pinfo *np = inet6_sk(sk);
struct sctp_sockaddr_entry *laddr;
union sctp_addr *baddr = NULL;
union sctp_addr *daddr = &t->ipaddr;
union sctp_addr dst_saddr;
+ struct in6_addr *final_p, final;
__u8 matchlen = 0;
__u8 bmatchlen;
sctp_scope_t scope;
@@ -280,7 +259,8 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
SCTP_DEBUG_PRINTK("SRC=%pI6 - ", &fl6->saddr);
}
- dst = ip6_dst_lookup_flow(sk, fl6, NULL, false);
+ final_p = fl6_update_dst(fl6, np->opt, &final);
+ dst = ip6_dst_lookup_flow(sk, fl6, final_p, false);
if (!asoc || saddr)
goto out;
@@ -331,10 +311,12 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
}
}
rcu_read_unlock();
+
if (baddr) {
ipv6_addr_copy(&fl6->saddr, &baddr->v6.sin6_addr);
fl6->fl6_sport = baddr->v6.sin6_port;
- dst = ip6_dst_lookup_flow(sk, fl6, NULL, false);
+ final_p = fl6_update_dst(fl6, np->opt, &final);
+ dst = ip6_dst_lookup_flow(sk, fl6, final_p, false);
}
out: