From 8a2a96237249db7816218b9cbed1457a5d51a3ad Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Thu, 31 May 2018 17:46:13 +0200
Subject: expr: add connlimit support

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 include/buffer.h                    |  1 +
 include/libnftnl/expr.h             |  5 +++++
 include/linux/netfilter/nf_tables.h | 21 ++++++++++++++++++++-
 3 files changed, 26 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/buffer.h b/include/buffer.h
index f556895..f6626a6 100644
--- a/include/buffer.h
+++ b/include/buffer.h
@@ -50,6 +50,7 @@ int nftnl_buf_expr(struct nftnl_buf *b, int type, uint32_t flags,
 #define COMPAT_FLAGS		"compat_flags"
 #define COMPAT_PROTO		"compat_proto"
 #define CONSUMED		"consumed"
+#define COUNT			"count"
 #define DATA			"data"
 #define DEVICE			"device"
 #define DIR			"dir"
diff --git a/include/libnftnl/expr.h b/include/libnftnl/expr.h
index 3dcd7dc..7d222af 100644
--- a/include/libnftnl/expr.h
+++ b/include/libnftnl/expr.h
@@ -102,6 +102,11 @@ enum {
 	NFTNL_EXPR_CTR_BYTES,
 };
 
+enum {
+	NFTNL_EXPR_CONNLIMIT_COUNT = NFTNL_EXPR_BASE,
+	NFTNL_EXPR_CONNLIMIT_FLAGS,
+};
+
 enum {
 	NFTNL_EXPR_BITWISE_SREG	= NFTNL_EXPR_BASE,
 	NFTNL_EXPR_BITWISE_DREG,
diff --git a/include/linux/netfilter/nf_tables.h b/include/linux/netfilter/nf_tables.h
index db80d53..e8f4b58 100644
--- a/include/linux/netfilter/nf_tables.h
+++ b/include/linux/netfilter/nf_tables.h
@@ -1043,6 +1043,24 @@ enum nft_limit_attributes {
 };
 #define NFTA_LIMIT_MAX		(__NFTA_LIMIT_MAX - 1)
 
+enum nft_connlimit_flags {
+	NFT_CONNLIMIT_F_INV	= (1 << 0),
+};
+
+/**
+ * enum nft_connlimit_attributes - nf_tables connlimit expression netlink attributes
+ *
+ * @NFTA_CONNLIMIT_COUNT: number of connections (NLA_U32)
+ * @NFTA_CONNLIMIT_FLAGS: flags (NLA_U32: enum nft_connlimit_flags)
+ */
+enum nft_connlimit_attributes {
+	NFTA_CONNLIMIT_UNSPEC,
+	NFTA_CONNLIMIT_COUNT,
+	NFTA_CONNLIMIT_FLAGS,
+	__NFTA_CONNLIMIT_MAX
+};
+#define NFTA_CONNLIMIT_MAX	(__NFTA_CONNLIMIT_MAX - 1)
+
 /**
  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
  *
@@ -1348,7 +1366,8 @@ enum nft_ct_helper_attributes {
 #define NFT_OBJECT_QUOTA	2
 #define NFT_OBJECT_CT_HELPER	3
 #define NFT_OBJECT_LIMIT	4
-#define __NFT_OBJECT_MAX	5
+#define NFT_OBJECT_CONNLIMIT	5
+#define __NFT_OBJECT_MAX	6
 #define NFT_OBJECT_MAX		(__NFT_OBJECT_MAX - 1)
 
 /**
-- 
cgit v1.2.3