netdev - [PATCH net v2] tcp: delete redundant calls of tcp_mtup

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Date:	Sun, 19 Jan 2014 20:44:46 +0800
From:	Weiping Pan <panweiping3@...il.com>
To:	davem@...emloft.net, netdev@...r.kernel.org
Cc:	Weiping Pan <panweiping3@...il.com>
Subject: [PATCH net v2] tcp: delete redundant calls of tcp_mtup_init()

As tcp_rcv_state_process() has already calls tcp_mtup_init() for non-fastopen
sock, we can delete the redundant calls of tcp_mtup_init() in
tcp_{v4,v6}_syn_recv_sock().

Signed-off-by: Weiping Pan <panweiping3@...il.com>
---
 net/ipv4/tcp_ipv4.c |    1 -
 net/ipv6/tcp_ipv6.c |    1 -
 2 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 0672139..4176606 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1668,7 +1668,6 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 	}
 	sk_setup_caps(newsk, dst);
 
-	tcp_mtup_init(newsk);
 	tcp_sync_mss(newsk, dst_mtu(dst));
 	newtp->advmss = dst_metric_advmss(dst);
 	if (tcp_sk(sk)->rx_opt.user_mss &&
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index f67033b..c5b0e1f 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1230,7 +1230,6 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 		inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
 						     newnp->opt->opt_flen);
 
-	tcp_mtup_init(newsk);
 	tcp_sync_mss(newsk, dst_mtu(dst));
 	newtp->advmss = dst_metric_advmss(dst);
 	if (tcp_sk(sk)->rx_opt.user_mss &&
-- 
1.7.4.4

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