diff options
| author |   Neal Cardwell <ncardwell@google.com> | 2012-06-28 12:34:20 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-06-28 17:53:50 -0700 |
| commit | 9494218fbae2f88bd3f9b887714734abfdf38bab (patch) | |
| tree | b92ee490d2b399412c49ed6b193c747b36683499 /net | |
| parent | tcp: pass fl6 to inet6_csk_route_req() (diff) | |
| download | linux-dev-9494218fbae2f88bd3f9b887714734abfdf38bab.tar.xz linux-dev-9494218fbae2f88bd3f9b887714734abfdf38bab.zip | |
tcp: use inet6_csk_route_req() in tcp_v6_send_synack()
With the recent change (earlier in this patch series) to set
flowi6_oif to treq->iif in inet6_csk_route_req(), the dst lookup in
these two functions is now identical, so tcp_v6_send_synack() can now
just call inet6_csk_route_req(), to reduce code duplication and keep
things closer to the IPv4 side, which is structured this way.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 4e5fa5f6ec68..d1db0caefdcd 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -485,34 +485,17 @@ static int tcp_v6_send_synack(struct sock *sk, struct inet6_request_sock *treq = inet6_rsk(req); struct ipv6_pinfo *np = inet6_sk(sk); struct sk_buff * skb; - struct ipv6_txoptions *opt = NULL; - struct in6_addr * final_p, final; + struct ipv6_txoptions *opt = np->opt; struct flowi6 fl6; struct dst_entry *dst; - int err; - - memset(&fl6, 0, sizeof(fl6)); - fl6.flowi6_proto = IPPROTO_TCP; - fl6.daddr = treq->rmt_addr; - fl6.saddr = treq->loc_addr; - fl6.flowlabel = 0; - fl6.flowi6_oif = treq->iif; - fl6.flowi6_mark = sk->sk_mark; - fl6.fl6_dport = inet_rsk(req)->rmt_port; - fl6.fl6_sport = inet_rsk(req)->loc_port; - security_req_classify_flow(req, flowi6_to_flowi(&fl6)); - - opt = np->opt; - final_p = fl6_update_dst(&fl6, opt, &final); + int err = -ENOMEM; - dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); - if (IS_ERR(dst)) { - err = PTR_ERR(dst); - dst = NULL; + dst = inet6_csk_route_req(sk, &fl6, req); + if (!dst) goto done; - } + skb = tcp_make_synack(sk, dst, req, rvp); - err = -ENOMEM; + if (skb) { __tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr); |