tcp: Add tcp_clamp_rto_to_user_timeout() helper to improve accuracy

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Create the tcp_clamp_rto_to_user_timeout() helper routine. To calculate
the correct rto, so that the TCP_USER_TIMEOUT socket option is more
accurate. Taking suggestions and feedback into account from
Eric Dumazet, Neal Cardwell and David Laight. Due to the 1st commit we
can avoid the msecs_to_jiffies() and jiffies_to_msecs() dance.

Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jon Maxwell 2018-07-19 11:14:44 +10:00 • committed by David S. Miller

parent a7fa37703d

commit b701a99e43

1 changed files with 17 additions and 1 deletions

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net/ipv4/tcp_timer.c

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