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Commit 4e242d16 authored by Martin Willi's avatar Martin Willi Committed by David S. Miller
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xfrm: Define new XFRM netlink auth attribute with specified truncation bits 



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: default avatarMartin Willi <martin@strongswan.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a661c419

include/linux/xfrm.h

+8 −0
Original line number Diff line number Diff line
@@ -90,6 +90,13 @@ 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 */
@@ -274,6 +281,7 @@ 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)