tcp: switch tcp_fastopen key generation to net_get_random_once
authorHannes Frederic Sowa <hannes@stressinduktion.org>
Sat, 19 Oct 2013 19:48:58 +0000 (21:48 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sat, 19 Oct 2013 23:45:35 +0000 (19:45 -0400)
commit222e83d2e0aecb6a5e8d42b1a8d51332a1eba960
tree395011fb151ed3ce911333e1ab70602b2cfbc3e0
parent1bbdceef1e535add893bf71d7b7ab102e4eb69eb
tcp: switch tcp_fastopen key generation to net_get_random_once

Changed key initialization of tcp_fastopen cookies to net_get_random_once.

If the user sets a custom key net_get_random_once must be called at
least once to ensure we don't overwrite the user provided key when the
first cookie is generated later on.

Cc: Yuchung Cheng <ycheng@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/tcp.h
net/ipv4/sysctl_net_ipv4.c
net/ipv4/tcp_fastopen.c