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authorEric Dumazet <edumazet@google.com>2014-09-05 22:33:33 (GMT)
committerDavid S. Miller <davem@davemloft.net>2014-09-06 00:49:33 (GMT)
commit7faee5c0d514162853a343d93e4a0b6bb8bfec21 (patch)
treeebaba03f755dfbe9d942fbe610ce3aecd1b0fc33 /net/ipv4/tcp_timer.c
parent04317dafd11dd7b0ec19b85f098414abae6ed5f7 (diff)
downloadlinux-7faee5c0d514162853a343d93e4a0b6bb8bfec21.tar.xz
tcp: remove TCP_SKB_CB(skb)->when
After commit 740b0f1841f6 ("tcp: switch rtt estimations to usec resolution"), we no longer need to maintain timestamps in two different fields. TCP_SKB_CB(skb)->when can be removed, as same information sits in skb_mstamp.stamp_jiffies Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_timer.c')
-rw-r--r--net/ipv4/tcp_timer.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index df90cd1..a339e7b 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -135,10 +135,9 @@ static bool retransmits_timed_out(struct sock *sk,
if (!inet_csk(sk)->icsk_retransmits)
return false;
- if (unlikely(!tcp_sk(sk)->retrans_stamp))
- start_ts = TCP_SKB_CB(tcp_write_queue_head(sk))->when;
- else
- start_ts = tcp_sk(sk)->retrans_stamp;
+ start_ts = tcp_sk(sk)->retrans_stamp;
+ if (unlikely(!start_ts))
+ start_ts = tcp_skb_timestamp(tcp_write_queue_head(sk));
if (likely(timeout == 0)) {
linear_backoff_thresh = ilog2(TCP_RTO_MAX/rto_base);