summaryrefslogtreecommitdiff
path: root/net/ipv6/tcp_ipv6.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c36
1 files changed, 17 insertions, 19 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 12750f2b05ab..1cbbb87dbad2 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -455,8 +455,7 @@ out:
}
-static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
- struct dst_entry *dst)
+static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req)
{
struct inet6_request_sock *treq = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
@@ -464,6 +463,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
struct ipv6_txoptions *opt = NULL;
struct in6_addr * final_p = NULL, final;
struct flowi fl;
+ struct dst_entry *dst;
int err = -1;
memset(&fl, 0, sizeof(fl));
@@ -476,24 +476,22 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
fl.fl_ip_sport = inet_sk(sk)->sport;
security_req_classify_flow(req, &fl);
- if (dst == NULL) {
- opt = np->opt;
- if (opt && opt->srcrt) {
- struct rt0_hdr *rt0 = (struct rt0_hdr *) 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)
- goto done;
- if (final_p)
- ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
- goto done;
+ opt = np->opt;
+ if (opt && opt->srcrt) {
+ struct rt0_hdr *rt0 = (struct rt0_hdr *) 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)
+ goto done;
+ if (final_p)
+ ipv6_addr_copy(&fl.fl6_dst, final_p);
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+ goto done;
+
skb = tcp_make_synack(sk, dst, req);
if (skb) {
struct tcphdr *th = tcp_hdr(skb);
@@ -1294,7 +1292,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
security_inet_conn_request(sk, skb, req);
- if (tcp_v6_send_synack(sk, req, NULL))
+ if (tcp_v6_send_synack(sk, req))
goto drop;
inet6_csk_reqsk_queue_hash_add(sk, req, TCP_TIMEOUT_INIT);