netdev - [PATCH net-next 2/6] netfilter: tproxy: prepare TCP_NEW_SYN

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Date:	Mon, 16 Mar 2015 21:06:16 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Pablo Neira Ayuso <pablo@...filter.org>,
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 2/6] netfilter: tproxy: prepare TCP_NEW_SYN_RECV support

TCP request socks soon will be visible in ehash table.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/netfilter/xt_TPROXY.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/net/netfilter/xt_TPROXY.c b/net/netfilter/xt_TPROXY.c
index ef8a926752a9..165b77ce9aa9 100644
--- a/net/netfilter/xt_TPROXY.c
+++ b/net/netfilter/xt_TPROXY.c
@@ -42,15 +42,21 @@ enum nf_tproxy_lookup_t {
 
 static bool tproxy_sk_is_transparent(struct sock *sk)
 {
-	if (sk->sk_state != TCP_TIME_WAIT) {
-		if (inet_sk(sk)->transparent)
-			return true;
-		sock_put(sk);
-	} else {
+	switch (sk->sk_state) {
+	case TCP_TIME_WAIT:
 		if (inet_twsk(sk)->tw_transparent)
 			return true;
-		inet_twsk_put(inet_twsk(sk));
+		break;
+	case TCP_NEW_SYN_RECV:
+		if (inet_rsk(inet_reqsk(sk))->no_srccheck)
+			return true;
+		break;
+	default:
+		if (inet_sk(sk)->transparent)
+			return true;
 	}
+
+	sock_gen_put(sk);
 	return false;
 }
 
-- 
2.2.0.rc0.207.ga3a616c

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