0f24558e91563888d51e9be5b70981da920c37ac - linux

commit	0f24558e91563888d51e9be5b70981da920c37ac	[log] [tgz]
author	Horia Geanta <horia.geanta@freescale.com>	Wed Feb 12 16:20:06 2014 +0200
committer	Steffen Klassert <steffen.klassert@secunet.com>	Thu Feb 13 07:40:30 2014 +0100
tree	31aba2926b9f641fe30e235acc5a87b1b4dab73b
parent	5826bdd1816fa2baa122b62e14905c0ad8e7b96a [diff]

xfrm: avoid creating temporary SA when there are no listeners

In the case when KMs have no listeners, km_query() will fail and
temporary SAs are garbage collected immediately after their allocation.
This causes strain on memory allocation, leading even to OOM since
temporary SA alloc/free cycle is performed for every packet
and garbage collection does not keep up the pace.

The sane thing to do is to make sure we have audience before
temporary SA allocation.

Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

include/net/xfrm.h[diff]
net/key/af_key.c[diff]
net/xfrm/xfrm_state.c[diff]
net/xfrm/xfrm_user.c[diff]

4 files changed

tree: 31aba2926b9f641fe30e235acc5a87b1b4dab73b