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[1/3] xfrm: Define new XFRM netlink auth attribute with specified truncation bits

Message ID 1d70ade2a447f1c43a78ca813f46222859f70b5a.1259142145.git.martin@strongswan.org
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Martin Willi Nov. 25, 2009, 10:29 a.m. UTC 
The new XFRMA_ALG_AUTH_TRUNC attribute taking a xfrm_algo_auth as
argument allows the installation of authentication algorithms with
a truncation length specified in userspace, i.e. SHA256 with 128 bit
instead of 96 bit truncation.

Signed-off-by: Martin Willi <martin@strongswan.org>
---
 include/linux/xfrm.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
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Patch

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 2d4ec15..d28e853 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -96,6 +96,13 @@  struct xfrm_algo {
 	char		alg_key[0];
 };
 
+struct xfrm_algo_auth {
+	char		alg_name[64];
+	unsigned int	alg_key_len;    /* in bits */
+	unsigned int	alg_trunc_len;  /* in bits */
+	char		alg_key[0];
+};
+
 struct xfrm_algo_aead {
 	char		alg_name[64];
 	unsigned int	alg_key_len;	/* in bits */
@@ -283,6 +290,7 @@  enum xfrm_attr_type_t {
 	XFRMA_MIGRATE,
 	XFRMA_ALG_AEAD,		/* struct xfrm_algo_aead */
 	XFRMA_KMADDRESS,        /* struct xfrm_user_kmaddress */
+	XFRMA_ALG_AUTH_TRUNC,	/* struct xfrm_algo_auth */
 	__XFRMA_MAX
 
 #define XFRMA_MAX (__XFRMA_MAX - 1)