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(parent: a915da9) | patch
tcp: md5: use sock_kmalloc() to limit md5 keys
authorEric Dumazet <eric.dumazet@gmail.com>
Tue, 31 Jan 2012 10:56:48 +0000 (10:56 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 31 Jan 2012 21:11:48 +0000 (16:11 -0500)
commit5f3d9cb2962967d9d7e03abb4a7ca275a9a3fea5
tree7847eb10ad6a754ed2798bce28ea3d142484a164tree | snapshot (tar.gz zip)
parenta915da9b69273815527ccb3789421cb7027b545bcommit | diff
tcp: md5: use sock_kmalloc() to limit md5 keys

There is no limit on number of MD5 keys an application can attach to a
tcp socket.

This patch adds a per tcp socket limit based
on /proc/sys/net/core/optmem_max

With current default optmem_max values, this allows about 150 keys on
64bit arches, and 88 keys on 32bit arches.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_ipv4.c diff | blob | blame | history