[IPSEC]: Add compatibility algorithm name support
This patch adds a compatibility name field for each IPsec algorithm. This
is needed when parameterised algorithms are used. For example, "md5" will
become "hmac(md5)", and "aes" will become "cbc(aes)".
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
include/net/xfrm.h | 1 +
net/xfrm/xfrm_algo.c | 3 ++-
net/xfrm/xfrm_user.c | 1 +
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -854,6 +854,7 @@ struct xfrm_algo_comp_info {
struct xfrm_algo_desc {
char *name;
+ char *compat;
u8 available:1;
union {
struct xfrm_algo_auth_info auth;
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -359,7 +359,8 @@ static struct xfrm_algo_desc *xfrm_get_b
return NULL;
for (i = 0; i < entries; i++) {
- if (strcmp(name, list[i].name))
+ if (strcmp(name, list[i].name) &&
+ (!list[i].compat || strcmp(name, list[i].compat)))
continue;
if (list[i].available)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -213,6 +213,7 @@ static int attach_one_algo(struct xfrm_a
return -ENOMEM;
memcpy(p, ualg, len);
+ strcpy(p->alg_name, algo->name);
*algpp = p;
return 0;
}
-
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