From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 12 Aug 2006 22:50:00 +0000 (+1000)
Subject: [IPSEC]: Add compatibility algorithm name support
X-Git-Tag: v2.6.19-rc1~1297^2~20
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04ff12609445c7b462d7fc7f2d30dad442c922f3;p=linux-2.6

[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@gondor.apana.org.au>
---

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 10396b4bde..e9114e41af 100644
--- 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
index 04e1aea58b..b68974b387 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -359,7 +359,8 @@ static struct xfrm_algo_desc *xfrm_get_byname(struct xfrm_algo_desc *list,
 		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
index 7d18ca03c8..fa79ddc423 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -213,6 +213,7 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
 		return -ENOMEM;
 
 	memcpy(p, ualg, len);
+	strcpy(p->alg_name, algo->name);
 	*algpp = p;
 	return 0;
 }