netdev - [PATCH net-next 0/2] tcp: deduplicate TCP_SKB

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Message-Id: <1409956413-29472-1-git-send-email-edumazet@google.com>
Date:	Fri,  5 Sep 2014 15:33:31 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Yuchung Cheng <ycheng@...gle.com>,
	Neal Cardwell <ncardwell@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 0/2] tcp: deduplicate TCP_SKB_CB(skb)->when

TCP_SKB_CB(skb)->when has different meaning in output and input paths.

In output path, it contains a timestamp.
In input path, it contains an ISN, chosen by tcp_timewait_state_process()

Its usage in output path is obsolete after usec timestamping.
Lets simplify and clean this.

Eric Dumazet (2):
  tcp: introduce TCP_SKB_CB(skb)->tcp_tw_isn
  tcp: remove TCP_SKB_CB(skb)->when

 include/net/tcp.h        |  8 +++++++-
 net/ipv4/tcp_input.c     |  5 +++--
 net/ipv4/tcp_ipv4.c      |  7 ++++---
 net/ipv4/tcp_minisocks.c |  2 +-
 net/ipv4/tcp_output.c    | 34 +++++++++++++---------------------
 net/ipv4/tcp_timer.c     |  7 +++----
 net/ipv6/tcp_ipv6.c      |  4 ++--
 7 files changed, 33 insertions(+), 34 deletions(-)

-- 
2.1.0.rc2.206.gedb03e5

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