From: Venkat Yekkirala <vyekkirala@TrustedCS.com>
To: netdev@vger.kernel.org, selinux@tycho.nsa.gov
Subject: [PATCH 06/06] MLSXFRM: Add security context to acquire messages using PF_KEY
Date: Tue, 20 Jun 2006 13:24:16 -0500 [thread overview]
Message-ID: <44983D50.4080204@trustedcs.com> (raw)
This includes the security context of a security association created for use by IKE
in the acquire messages sent to IKE daemons using PF_KEY. This would allow
the daemons to include the security context in the negotiation, so that the resultant
association is unique to that security context.
Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com>
---
net/key/af_key.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
--- linux-2.6.16.vanilla/net/key/af_key.c 2006-06-12 17:49:42.000000000 -0500
+++ linux-2.6.16/net/key/af_key.c 2006-06-19 19:48:24.000000000 -0500
@@ -2709,6 +2709,9 @@ static int pfkey_send_acquire(struct xfr
#endif
int sockaddr_size;
int size;
+ struct sadb_x_sec_ctx *sec_ctx;
+ struct xfrm_sec_ctx *xfrm_ctx;
+ int ctx_size = 0;
sockaddr_size = pfkey_sockaddr_size(x->props.family);
if (!sockaddr_size)
@@ -2724,6 +2727,11 @@ static int pfkey_send_acquire(struct xfr
else if (x->id.proto == IPPROTO_ESP)
size += count_esp_combs(t);
+ if ((xfrm_ctx = x->security)) {
+ ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len);
+ size += sizeof(struct sadb_x_sec_ctx) + ctx_size;
+ }
+
skb = alloc_skb(size + 16, GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
@@ -2819,6 +2827,20 @@ static int pfkey_send_acquire(struct xfr
else if (x->id.proto == IPPROTO_ESP)
dump_esp_combs(skb, t);
+ /* security context */
+ if (xfrm_ctx) {
+ sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
+ sizeof(struct sadb_x_sec_ctx) + ctx_size);
+ sec_ctx->sadb_x_sec_len =
+ (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
+ sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
+ sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
+ sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
+ sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
+ memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
+ xfrm_ctx->ctx_len);
+ }
+
return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL);
}
--
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WARNING: multiple messages have this Message-ID (diff)
From: Venkat Yekkirala <vyekkirala@trustedcs.com>
To: netdev@vger.kernel.org, selinux@tycho.nsa.gov
Subject: [PATCH 06/06] MLSXFRM: Add security context to acquire messages using PF_KEY
Date: Tue, 20 Jun 2006 13:24:16 -0500 [thread overview]
Message-ID: <44983D50.4080204@trustedcs.com> (raw)
This includes the security context of a security association created for use by IKE
in the acquire messages sent to IKE daemons using PF_KEY. This would allow
the daemons to include the security context in the negotiation, so that the resultant
association is unique to that security context.
Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com>
---
net/key/af_key.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
--- linux-2.6.16.vanilla/net/key/af_key.c 2006-06-12 17:49:42.000000000 -0500
+++ linux-2.6.16/net/key/af_key.c 2006-06-19 19:48:24.000000000 -0500
@@ -2709,6 +2709,9 @@ static int pfkey_send_acquire(struct xfr
#endif
int sockaddr_size;
int size;
+ struct sadb_x_sec_ctx *sec_ctx;
+ struct xfrm_sec_ctx *xfrm_ctx;
+ int ctx_size = 0;
sockaddr_size = pfkey_sockaddr_size(x->props.family);
if (!sockaddr_size)
@@ -2724,6 +2727,11 @@ static int pfkey_send_acquire(struct xfr
else if (x->id.proto == IPPROTO_ESP)
size += count_esp_combs(t);
+ if ((xfrm_ctx = x->security)) {
+ ctx_size = PFKEY_ALIGN8(xfrm_ctx->ctx_len);
+ size += sizeof(struct sadb_x_sec_ctx) + ctx_size;
+ }
+
skb = alloc_skb(size + 16, GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
@@ -2819,6 +2827,20 @@ static int pfkey_send_acquire(struct xfr
else if (x->id.proto == IPPROTO_ESP)
dump_esp_combs(skb, t);
+ /* security context */
+ if (xfrm_ctx) {
+ sec_ctx = (struct sadb_x_sec_ctx *) skb_put(skb,
+ sizeof(struct sadb_x_sec_ctx) + ctx_size);
+ sec_ctx->sadb_x_sec_len =
+ (sizeof(struct sadb_x_sec_ctx) + ctx_size) / sizeof(uint64_t);
+ sec_ctx->sadb_x_sec_exttype = SADB_X_EXT_SEC_CTX;
+ sec_ctx->sadb_x_ctx_doi = xfrm_ctx->ctx_doi;
+ sec_ctx->sadb_x_ctx_alg = xfrm_ctx->ctx_alg;
+ sec_ctx->sadb_x_ctx_len = xfrm_ctx->ctx_len;
+ memcpy(sec_ctx + 1, xfrm_ctx->ctx_str,
+ xfrm_ctx->ctx_len);
+ }
+
return pfkey_broadcast(skb, GFP_ATOMIC, BROADCAST_REGISTERED, NULL);
}
next reply other threads:[~2006-06-20 18:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-20 18:24 Venkat Yekkirala [this message]
2006-06-20 18:24 ` [PATCH 06/06] MLSXFRM: Add security context to acquire messages using PF_KEY Venkat Yekkirala
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