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authorJames Morris <jmorris@namei.org>2006-06-09 00:31:46 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-17 21:30:01 -0700
commit7c9728c393dceb724d66d696cfabce82151a78e5 (patch)
treeaf2b67ff7c579d669d01f28af33929f780b9c1b3 /net
parent[SECMARK]: Add xtables SECMARK target (diff)
downloadlinux-dev-7c9728c393dceb724d66d696cfabce82151a78e5.tar.xz
linux-dev-7c9728c393dceb724d66d696cfabce82151a78e5.zip
[SECMARK]: Add secmark support to conntrack
Add a secmark field to IP and NF conntracks, so that security markings on packets can be copied to their associated connections, and also copied back to packets as required. This is similar to the network mark field currently used with conntrack, although it is intended for enforcement of security policy rather than network policy. Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/Kconfig12
-rw-r--r--net/ipv4/netfilter/ip_conntrack_core.c3
-rw-r--r--net/ipv4/netfilter/ip_conntrack_standalone.c5
-rw-r--r--net/netfilter/Kconfig12
-rw-r--r--net/netfilter/nf_conntrack_core.c3
-rw-r--r--net/netfilter/nf_conntrack_standalone.c5
6 files changed, 40 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index ff4b118f14a9..e1d7f5fbc526 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -55,6 +55,18 @@ config IP_NF_CONNTRACK_MARK
of packets, but this mark value is kept in the conntrack session
instead of the individual packets.
+config IP_NF_CONNTRACK_SECMARK
+ bool 'Connection tracking security mark support'
+ depends on IP_NF_CONNTRACK && NETWORK_SECMARK
+ help
+ This option enables security markings to be applied to
+ connections. Typically they are copied to connections from
+ packets using the CONNSECMARK target and copied back from
+ connections to packets with the same target, with the packets
+ being originally labeled via SECMARK.
+
+ If unsure, say 'N'.
+
config IP_NF_CONNTRACK_EVENTS
bool "Connection tracking events (EXPERIMENTAL)"
depends on EXPERIMENTAL && IP_NF_CONNTRACK
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 4fe9e69378df..7e4cf9a4d15f 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -724,6 +724,9 @@ init_conntrack(struct ip_conntrack_tuple *tuple,
/* this is ugly, but there is no other place where to put it */
conntrack->nat.masq_index = exp->master->nat.masq_index;
#endif
+#ifdef CONFIG_IP_NF_CONNTRACK_SECMARK
+ conntrack->secmark = exp->master->secmark;
+#endif
nf_conntrack_get(&conntrack->master->ct_general);
CONNTRACK_STAT_INC(expect_new);
} else {
diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c
index 6cb9b989d14c..88445aac3f28 100644
--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -189,6 +189,11 @@ static int ct_seq_show(struct seq_file *s, void *v)
return -ENOSPC;
#endif
+#ifdef CONFIG_IP_NF_CONNTRACK_SECMARK
+ if (seq_printf(s, "secmark=%u ", conntrack->secmark))
+ return -ENOSPC;
+#endif
+
if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
return -ENOSPC;
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 10eccdd4d6ea..023f81e5f96b 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -60,6 +60,18 @@ config NF_CONNTRACK_MARK
of packets, but this mark value is kept in the conntrack session
instead of the individual packets.
+config NF_CONNTRACK_SECMARK
+ bool 'Connection tracking security mark support'
+ depends on NF_CONNTRACK && NETWORK_SECMARK
+ help
+ This option enables security markings to be applied to
+ connections. Typically they are copied to connections from
+ packets using the CONNSECMARK target and copied back from
+ connections to packets with the same target, with the packets
+ being originally labeled via SECMARK.
+
+ If unsure, say 'N'.
+
config NF_CONNTRACK_EVENTS
bool "Connection tracking events (EXPERIMENTAL)"
depends on EXPERIMENTAL && NF_CONNTRACK
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index bc2bd4c3859e..cd299f4b7db1 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -990,6 +990,9 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
#ifdef CONFIG_NF_CONNTRACK_MARK
conntrack->mark = exp->master->mark;
#endif
+#ifdef CONFIG_NF_CONNTRACK_SECMARK
+ conntrack->secmark = exp->master->secmark;
+#endif
nf_conntrack_get(&conntrack->master->ct_general);
NF_CT_STAT_INC(expect_new);
} else
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index e01d20d8e287..e34c574f0351 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -213,6 +213,11 @@ static int ct_seq_show(struct seq_file *s, void *v)
return -ENOSPC;
#endif
+#ifdef CONFIG_NF_CONNTRACK_SECMARK
+ if (seq_printf(s, "secmark=%u ", conntrack->secmark))
+ return -ENOSPC;
+#endif
+
if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
return -ENOSPC;