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 <mar...@strongswan.org>
---
 include/linux/xfrm.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

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)
-- 
1.6.3.3

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