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authorDamian Lukowski <damian@tvk.rwth-aachen.de>2009-12-07 06:06:16 +0000
committerDavid S. Miller <davem@davemloft.net>2009-12-08 20:56:11 -0800
commit2f7de5710a4d394920405febc2a9937c69e16dda (patch)
tree8f038451b643f68ab399009e769a74678feb5546 /include
parent07f29bc5bbae4e53e982ab956fed7207990a7786 (diff)
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tcp: Stalling connections: Move timeout calculation routine
This patch moves retransmits_timed_out() from include/net/tcp.h to tcp_timer.c, where it is used. Reported-by: Frederic Leroy <fredo@starox.org> Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de> Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/tcp.h28
1 files changed, 0 insertions, 28 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e54bd85d9d4..0248c181a92 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1261,34 +1261,6 @@ static inline struct sk_buff *tcp_write_queue_prev(struct sock *sk, struct sk_bu
#define tcp_for_write_queue_from_safe(skb, tmp, sk) \
skb_queue_walk_from_safe(&(sk)->sk_write_queue, skb, tmp)
-/* This function calculates a "timeout" which is equivalent to the timeout of a
- * TCP connection after "boundary" unsucessful, exponentially backed-off
- * retransmissions with an initial RTO of TCP_RTO_MIN.
- */
-static inline bool retransmits_timed_out(struct sock *sk,
- unsigned int boundary)
-{
- unsigned int timeout, linear_backoff_thresh;
- unsigned int start_ts;
-
- 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;
-
- linear_backoff_thresh = ilog2(TCP_RTO_MAX/TCP_RTO_MIN);
-
- if (boundary <= linear_backoff_thresh)
- timeout = ((2 << boundary) - 1) * TCP_RTO_MIN;
- else
- timeout = ((2 << linear_backoff_thresh) - 1) * TCP_RTO_MIN +
- (boundary - linear_backoff_thresh) * TCP_RTO_MAX;
-
- return (tcp_time_stamp - start_ts) >= timeout;
-}
static inline struct sk_buff *tcp_send_head(struct sock *sk)
{