pf_key/xfrm_algo: prepare pf_key and xfrm_algo for new algorithms without pfkey support

Mark existing algorithms as pfkey supported and make pfkey only use algorithms
that have pfkey_supported set.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

1 files changed, 59 insertions, 6 deletions

diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index f9a549554740..6fb9d00a75dc 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -35,6 +35,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_GCM_ICV8,
 		.sadb_alg_ivlen = 8,
@@ -51,6 +53,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_GCM_ICV12,
 		.sadb_alg_ivlen = 8,
@@ -67,6 +71,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_GCM_ICV16,
 		.sadb_alg_ivlen = 8,
@@ -83,6 +89,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_CCM_ICV8,
 		.sadb_alg_ivlen = 8,
@@ -99,6 +107,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_CCM_ICV12,
 		.sadb_alg_ivlen = 8,
@@ -115,6 +125,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AES_CCM_ICV16,
 		.sadb_alg_ivlen = 8,
@@ -131,6 +143,8 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_NULL_AES_GMAC,
 		.sadb_alg_ivlen = 8,
@@ -151,6 +165,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_NULL,
 		.sadb_alg_ivlen = 0,
@@ -169,6 +185,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_AALG_MD5HMAC,
 		.sadb_alg_ivlen = 0,
@@ -187,6 +205,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_AALG_SHA1HMAC,
 		.sadb_alg_ivlen = 0,
@@ -205,6 +225,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_SHA2_256HMAC,
 		.sadb_alg_ivlen = 0,
@@ -222,6 +244,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_SHA2_384HMAC,
 		.sadb_alg_ivlen = 0,
@@ -239,6 +263,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_SHA2_512HMAC,
 		.sadb_alg_ivlen = 0,
@@ -257,6 +283,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_RIPEMD160HMAC,
 		.sadb_alg_ivlen = 0,
@@ -274,6 +302,8 @@ static struct xfrm_algo_desc aalg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_AALG_AES_XCBC_MAC,
 		.sadb_alg_ivlen = 0,
@@ -295,6 +325,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id =	SADB_EALG_NULL,
 		.sadb_alg_ivlen = 0,
@@ -313,6 +345,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_EALG_DESCBC,
 		.sadb_alg_ivlen = 8,
@@ -331,6 +365,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_EALG_3DESCBC,
 		.sadb_alg_ivlen = 8,
@@ -349,6 +385,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_CASTCBC,
 		.sadb_alg_ivlen = 8,
@@ -367,6 +405,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_BLOWFISHCBC,
 		.sadb_alg_ivlen = 8,
@@ -385,6 +425,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AESCBC,
 		.sadb_alg_ivlen = 8,
@@ -403,6 +445,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_SERPENTCBC,
 		.sadb_alg_ivlen = 8,
@@ -421,6 +465,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_CAMELLIACBC,
 		.sadb_alg_ivlen = 8,
@@ -439,6 +485,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_TWOFISHCBC,
 		.sadb_alg_ivlen = 8,
@@ -456,6 +504,8 @@ static struct xfrm_algo_desc ealg_list[] = {
 		}
 	},
 
+	.pfkey_supported = 1,
+
 	.desc = {
 		.sadb_alg_id = SADB_X_EALG_AESCTR,
 		.sadb_alg_ivlen	= 8,
@@ -473,6 +523,7 @@ static struct xfrm_algo_desc calg_list[] = {
 			.threshold = 90,
 		}
 	},
+	.pfkey_supported = 1,
 	.desc = { .sadb_alg_id = SADB_X_CALG_DEFLATE }
 },
 {
@@ -482,6 +533,7 @@ static struct xfrm_algo_desc calg_list[] = {
 			.threshold = 90,
 		}
 	},
+	.pfkey_supported = 1,
 	.desc = { .sadb_alg_id = SADB_X_CALG_LZS }
 },
 {
@@ -491,6 +543,7 @@ static struct xfrm_algo_desc calg_list[] = {
 			.threshold = 50,
 		}
 	},
+	.pfkey_supported = 1,
 	.desc = { .sadb_alg_id = SADB_X_CALG_LZJH }
 },
 };
@@ -714,27 +767,27 @@ void xfrm_probe_algs(void)
 }
 EXPORT_SYMBOL_GPL(xfrm_probe_algs);
 
-int xfrm_count_auth_supported(void)
+int xfrm_count_pfkey_auth_supported(void)
 {
 	int i, n;
 
 	for (i = 0, n = 0; i < aalg_entries(); i++)
-		if (aalg_list[i].available)
+		if (aalg_list[i].available && aalg_list[i].pfkey_supported)
 			n++;
 	return n;
 }
-EXPORT_SYMBOL_GPL(xfrm_count_auth_supported);
+EXPORT_SYMBOL_GPL(xfrm_count_pfkey_auth_supported);
 
-int xfrm_count_enc_supported(void)
+int xfrm_count_pfkey_enc_supported(void)
 {
 	int i, n;
 
 	for (i = 0, n = 0; i < ealg_entries(); i++)
-		if (ealg_list[i].available)
+		if (ealg_list[i].available && ealg_list[i].pfkey_supported)
 			n++;
 	return n;
 }
-EXPORT_SYMBOL_GPL(xfrm_count_enc_supported);
+EXPORT_SYMBOL_GPL(xfrm_count_pfkey_enc_supported);
 
 #if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)