tree afe5c560388558bebd3e21b7c6f789a28a323a51
parent 6fbf2cb77461a0cd0675228d20dd0f70d7b2251f
author Herbert Xu <herbert@gondor.apana.org.au> 1201577849 -0800
committer David S. Miller <davem@davemloft.net> 1201836423 -0800

[IPSEC]: Add support for combined mode algorithms

This patch adds support for combined mode algorithms with GCM being
the first algorithm supported.

Combined mode algorithms can be added through the xfrm_user interface
using the new algorithm payload type XFRMA_ALG_AEAD.  Each algorithms
is identified by its name and the ICV length.

For the purposes of matching algorithms in xfrm_tmpl structures,
combined mode algorithms occupy the same name space as encryption
algorithms.  This is in line with how they are negotiated using IKE.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>