From f066e2b091a50f0b76ade87250065d65996b93dd Mon Sep 17 00:00:00 2001
From: Willem de Bruijn <willemb@google.com>
Date: Wed, 6 Aug 2014 15:09:44 -0400
Subject: [PATCH] net-timestamp: cumulative tcp timestamping fixes

A set of small fixes pointed out just after the merge:
- make tcp_tx_timestamp static
- make tcp_gso_tstamp static
- use before() to compare TCP seqno, instead of cast to u64
- add tstamp to tx_flags in GSO, instead of overwrite tx_flags
- record skb_shinfo(skb)->tskey for all timestamps, also HW.
- optimization in tcp_tx_timestamp:
  call sock_tx_timestamp only if a tstamp option is set.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Fixes: 4ed2d765dfac ("net-timestamp: TCP timestamping")
Signed-off-by: David S. Miller <davem@davemloft.net>
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