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Date: Thu, 14 Feb 2013 12:47:22 +0100
From: Steffen Klassert <steffen.klassert@...unet.com>
To: David Miller <davem@...emloft.net>
Cc: Herbert Xu <herbert@...dor.apana.org.au>,
Steffen Klassert <steffen.klassert@...unet.com>,
netdev@...r.kernel.org
Subject: [PATCH 2/7] pf_key/xfrm_algo: prepare pf_key and xfrm_algo for new algorithms without pfkey support
From: Jussi Kivilinna <jussi.kivilinna@...et.fi>
Mark existing algorithms as pfkey supported and make pfkey only use algorithms
that have pfkey_supported set.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@...et.fi>
Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>
---
include/net/xfrm.h | 5 ++--
net/key/af_key.c | 39 +++++++++++++++++++++++-------
net/xfrm/xfrm_algo.c | 65 +++++++++++++++++++++++++++++++++++++++++++++-----
3 files changed, 93 insertions(+), 16 deletions(-)
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 421f764..814a1ba 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1320,6 +1320,7 @@ struct xfrm_algo_desc {
char *name;
char *compat;
u8 available:1;
+ u8 pfkey_supported:1;
union {
struct xfrm_algo_aead_info aead;
struct xfrm_algo_auth_info auth;
@@ -1561,8 +1562,8 @@ extern void xfrm_input_init(void);
extern int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq);
extern void xfrm_probe_algs(void);
-extern int xfrm_count_auth_supported(void);
-extern int xfrm_count_enc_supported(void);
+extern int xfrm_count_pfkey_auth_supported(void);
+extern int xfrm_count_pfkey_enc_supported(void);
extern struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx);
extern struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx);
extern struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id);
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 6a6e684..cb75f9b 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -815,18 +815,21 @@ static struct sk_buff *__pfkey_xfrm_state2msg(const struct xfrm_state *x,
sa->sadb_sa_auth = 0;
if (x->aalg) {
struct xfrm_algo_desc *a = xfrm_aalg_get_byname(x->aalg->alg_name, 0);
- sa->sadb_sa_auth = a ? a->desc.sadb_alg_id : 0;
+ sa->sadb_sa_auth = (a && a->pfkey_supported) ?
+ a->desc.sadb_alg_id : 0;
}
sa->sadb_sa_encrypt = 0;
BUG_ON(x->ealg && x->calg);
if (x->ealg) {
struct xfrm_algo_desc *a = xfrm_ealg_get_byname(x->ealg->alg_name, 0);
- sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
+ sa->sadb_sa_encrypt = (a && a->pfkey_supported) ?
+ a->desc.sadb_alg_id : 0;
}
/* KAME compatible: sadb_sa_encrypt is overloaded with calg id */
if (x->calg) {
struct xfrm_algo_desc *a = xfrm_calg_get_byname(x->calg->alg_name, 0);
- sa->sadb_sa_encrypt = a ? a->desc.sadb_alg_id : 0;
+ sa->sadb_sa_encrypt = (a && a->pfkey_supported) ?
+ a->desc.sadb_alg_id : 0;
}
sa->sadb_sa_flags = 0;
@@ -1137,7 +1140,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
if (sa->sadb_sa_auth) {
int keysize = 0;
struct xfrm_algo_desc *a = xfrm_aalg_get_byid(sa->sadb_sa_auth);
- if (!a) {
+ if (!a || !a->pfkey_supported) {
err = -ENOSYS;
goto out;
}
@@ -1159,7 +1162,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
if (sa->sadb_sa_encrypt) {
if (hdr->sadb_msg_satype == SADB_X_SATYPE_IPCOMP) {
struct xfrm_algo_desc *a = xfrm_calg_get_byid(sa->sadb_sa_encrypt);
- if (!a) {
+ if (!a || !a->pfkey_supported) {
err = -ENOSYS;
goto out;
}
@@ -1171,7 +1174,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
} else {
int keysize = 0;
struct xfrm_algo_desc *a = xfrm_ealg_get_byid(sa->sadb_sa_encrypt);
- if (!a) {
+ if (!a || !a->pfkey_supported) {
err = -ENOSYS;
goto out;
}
@@ -1577,13 +1580,13 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
struct sadb_msg *hdr;
int len, auth_len, enc_len, i;
- auth_len = xfrm_count_auth_supported();
+ auth_len = xfrm_count_pfkey_auth_supported();
if (auth_len) {
auth_len *= sizeof(struct sadb_alg);
auth_len += sizeof(struct sadb_supported);
}
- enc_len = xfrm_count_enc_supported();
+ enc_len = xfrm_count_pfkey_enc_supported();
if (enc_len) {
enc_len *= sizeof(struct sadb_alg);
enc_len += sizeof(struct sadb_supported);
@@ -1614,6 +1617,8 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
if (!aalg)
break;
+ if (!aalg->pfkey_supported)
+ continue;
if (aalg->available)
*ap++ = aalg->desc;
}
@@ -1633,6 +1638,8 @@ static struct sk_buff *compose_sadb_supported(const struct sadb_msg *orig,
struct xfrm_algo_desc *ealg = xfrm_ealg_get_byidx(i);
if (!ealg)
break;
+ if (!ealg->pfkey_supported)
+ continue;
if (ealg->available)
*ap++ = ealg->desc;
}
@@ -2824,6 +2831,8 @@ static int count_ah_combs(const struct xfrm_tmpl *t)
const struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(i);
if (!aalg)
break;
+ if (!aalg->pfkey_supported)
+ continue;
if (aalg_tmpl_set(t, aalg) && aalg->available)
sz += sizeof(struct sadb_comb);
}
@@ -2839,6 +2848,9 @@ static int count_esp_combs(const struct xfrm_tmpl *t)
if (!ealg)
break;
+ if (!ealg->pfkey_supported)
+ continue;
+
if (!(ealg_tmpl_set(t, ealg) && ealg->available))
continue;
@@ -2847,6 +2859,9 @@ static int count_esp_combs(const struct xfrm_tmpl *t)
if (!aalg)
break;
+ if (!aalg->pfkey_supported)
+ continue;
+
if (aalg_tmpl_set(t, aalg) && aalg->available)
sz += sizeof(struct sadb_comb);
}
@@ -2870,6 +2885,9 @@ static void dump_ah_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
if (!aalg)
break;
+ if (!aalg->pfkey_supported)
+ continue;
+
if (aalg_tmpl_set(t, aalg) && aalg->available) {
struct sadb_comb *c;
c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
@@ -2902,6 +2920,9 @@ static void dump_esp_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
if (!ealg)
break;
+ if (!ealg->pfkey_supported)
+ continue;
+
if (!(ealg_tmpl_set(t, ealg) && ealg->available))
continue;
@@ -2910,6 +2931,8 @@ static void dump_esp_combs(struct sk_buff *skb, const struct xfrm_tmpl *t)
const struct xfrm_algo_desc *aalg = xfrm_aalg_get_byidx(k);
if (!aalg)
break;
+ if (!aalg->pfkey_supported)
+ continue;
if (!(aalg_tmpl_set(t, aalg) && aalg->available))
continue;
c = (struct sadb_comb*)skb_put(skb, sizeof(struct sadb_comb));
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index f9a5495..6fb9d00 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)
--
1.7.9.5
--
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