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| author | Octavian Purdila <octavian.purdila@intel.com> | 2014-06-25 17:09:56 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-27 15:53:36 -0700 |
| commit | 9403715977075c89b1dbcdd7713ab542807a04ac (patch) | |
| tree | f2d234693facf1b9b384d1752fb1e991fc43dfea /net/ipv6 | |
| parent | d94e0417ad8d96d7d96b69335338ad942eaeecf1 (diff) | |
| download | linux-stable-9403715977075c89b1dbcdd7713ab542807a04ac.tar.gz linux-stable-9403715977075c89b1dbcdd7713ab542807a04ac.tar.bz2 linux-stable-9403715977075c89b1dbcdd7713ab542807a04ac.zip | |
tcp: move around a few calls in tcp_v6_conn_request
Make the tcp_v6_conn_request calls flow similar with that of
tcp_v4_conn_request.
Note that want_cookie can be true only if isn is zero and that is why
we can move the if (want_cookie) block out of the if (!isn) block.
Moving security_inet_conn_request() has a couple of side effects:
missing inet_rsk(req)->ecn_ok update and the req->cookie_ts
update. However, neither SELinux nor Smack security hooks seems to
check them. This change should also avoid future different behaviour
for IPv4 and IPv6 in the security hooks.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index d780d8808566..91b8a2e699f3 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1070,16 +1070,16 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) ireq = inet_rsk(req); af_ops->init_req(req, sk, skb); + if (security_inet_conn_request(sk, skb, req)) + goto drop_and_release; + if (!want_cookie || tmp_opt.tstamp_ok) TCP_ECN_create_request(req, skb, sock_net(sk)); - if (!isn) { - if (want_cookie) { - isn = cookie_init_sequence(af_ops, sk, skb, &req->mss); - req->cookie_ts = tmp_opt.tstamp_ok; - goto have_isn; - } - + if (want_cookie) { + isn = cookie_init_sequence(af_ops, sk, skb, &req->mss); + req->cookie_ts = tmp_opt.tstamp_ok; + } else if (!isn) { /* VJ's idea. We save last timestamp seen * from the destination in peer table, when entering * state TIME-WAIT, and check against it before @@ -1116,10 +1116,6 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb) isn = tcp_v6_init_sequence(skb); } -have_isn: - - if (security_inet_conn_request(sk, skb, req)) - goto drop_and_release; if (!dst) { dst = af_ops->route_req(sk, (struct flowi *)&fl6, req, NULL); |