summaryrefslogtreecommitdiffstats
path: root/include/linux/netfilter/nfnetlink.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/netfilter/nfnetlink.h')
-rw-r--r--include/linux/netfilter/nfnetlink.h99
1 files changed, 99 insertions, 0 deletions
diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h
new file mode 100644
index 0000000..0d2e4fb
--- /dev/null
+++ b/include/linux/netfilter/nfnetlink.h
@@ -0,0 +1,99 @@
+#ifndef _NFNETLINK_H
+#define _NFNETLINK_H
+#include <linux/types.h>
+#include <linux/netfilter/nfnetlink_compat.h>
+
+enum nfnetlink_groups {
+ NFNLGRP_NONE,
+#define NFNLGRP_NONE NFNLGRP_NONE
+ NFNLGRP_CONNTRACK_NEW,
+#define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW
+ NFNLGRP_CONNTRACK_UPDATE,
+#define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE
+ NFNLGRP_CONNTRACK_DESTROY,
+#define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY
+ NFNLGRP_CONNTRACK_EXP_NEW,
+#define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW
+ NFNLGRP_CONNTRACK_EXP_UPDATE,
+#define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE
+ NFNLGRP_CONNTRACK_EXP_DESTROY,
+#define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY
+ NFNLGRP_NFTABLES,
+#define NFNLGRP_NFTABLES NFNLGRP_NFTABLES
+ __NFNLGRP_MAX,
+};
+#define NFNLGRP_MAX (__NFNLGRP_MAX - 1)
+
+/* General form of address family dependent message.
+ */
+struct nfgenmsg {
+ __u8 nfgen_family; /* AF_xxx */
+ __u8 version; /* nfnetlink version */
+ __be16 res_id; /* resource id */
+};
+
+#define NFNETLINK_V0 0
+
+/* netfilter netlink message types are split in two pieces:
+ * 8 bit subsystem, 8bit operation.
+ */
+
+#define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8)
+#define NFNL_MSG_TYPE(x) (x & 0x00ff)
+
+/* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS()
+ * won't work anymore */
+#define NFNL_SUBSYS_NONE 0
+#define NFNL_SUBSYS_CTNETLINK 1
+#define NFNL_SUBSYS_CTNETLINK_EXP 2
+#define NFNL_SUBSYS_QUEUE 3
+#define NFNL_SUBSYS_ULOG 4
+#define NFNL_SUBSYS_OSF 5
+#define NFNL_SUBSYS_IPSET 6
+#define NFNL_SUBSYS_ACCT 7
+#define NFNL_SUBSYS_CTNETLINK_TIMEOUT 8
+#define NFNL_SUBSYS_CTHELPER 9
+#define NFNL_SUBSYS_NFTABLES 10
+#define NFNL_SUBSYS_COUNT 11
+
+#ifdef __KERNEL__
+
+#include <linux/netlink.h>
+#include <linux/capability.h>
+#include <net/netlink.h>
+
+struct nfnl_callback {
+ int (*call)(struct sock *nl, struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[]);
+ int (*call_rcu)(struct sock *nl, struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[]);
+ const struct nla_policy *policy; /* netlink attribute policy */
+ const u_int16_t attr_count; /* number of nlattr's */
+};
+
+struct nfnetlink_subsystem {
+ const char *name;
+ __u8 subsys_id; /* nfnetlink subsystem ID */
+ __u8 cb_count; /* number of callbacks */
+ const struct nfnl_callback *cb; /* callback for individual types */
+};
+
+extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);
+extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
+
+extern int nfnetlink_has_listeners(struct net *net, unsigned int group);
+extern int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group,
+ int echo, gfp_t flags);
+extern int nfnetlink_set_err(struct net *net, u32 pid, u32 group, int error);
+extern int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u_int32_t pid, int flags);
+
+extern void nfnl_lock(void);
+extern void nfnl_unlock(void);
+
+#define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
+ MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
+
+#endif /* __KERNEL__ */
+#endif /* _NFNETLINK_H */