1 files changed, 48 insertions, 14 deletions

diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h
index f6267e2883f2..515ce53aa20d 100644
--- a/include/linux/netfilter/nfnetlink.h
+++ b/include/linux/netfilter/nfnetlink.h
@@ -7,21 +7,26 @@
 #include <net/netlink.h>
 #include <uapi/linux/netfilter/nfnetlink.h>
 
+struct nfnl_info {
+	struct net		*net;
+	struct sock		*sk;
+	const struct nlmsghdr	*nlh;
+	struct netlink_ext_ack	*extack;
+};
+
+enum nfnl_callback_type {
+	NFNL_CB_UNSPEC	= 0,
+	NFNL_CB_MUTEX,
+	NFNL_CB_RCU,
+	NFNL_CB_BATCH,
+};
+
 struct nfnl_callback {
-	int (*call)(struct net *net, struct sock *nl, struct sk_buff *skb,
-		    const struct nlmsghdr *nlh,
-		    const struct nlattr * const cda[],
-		    struct netlink_ext_ack *extack);
-	int (*call_rcu)(struct net *net, struct sock *nl, struct sk_buff *skb,
-			const struct nlmsghdr *nlh,
-			const struct nlattr * const cda[],
-			struct netlink_ext_ack *extack);
-	int (*call_batch)(struct net *net, struct sock *nl, struct sk_buff *skb,
-			  const struct nlmsghdr *nlh,
-			  const struct nlattr * const cda[],
-			  struct netlink_ext_ack *extack);
-	const struct nla_policy *policy;	/* netlink attribute policy */
-	const u_int16_t attr_count;		/* number of nlattr's */
+	int (*call)(struct sk_buff *skb, const struct nfnl_info *info,
+		    const struct nlattr * const cda[]);
+	const struct nla_policy	*policy;
+	enum nfnl_callback_type	type;
+	__u16			attr_count;
 };
 
 enum nfnl_abort_action {
@@ -51,12 +56,41 @@ int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 portid,
 		   unsigned int group, int echo, gfp_t flags);
 int nfnetlink_set_err(struct net *net, u32 portid, u32 group, int error);
 int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u32 portid);
+void nfnetlink_broadcast(struct net *net, struct sk_buff *skb, __u32 portid,
+			 __u32 group, gfp_t allocation);
 
 static inline u16 nfnl_msg_type(u8 subsys, u8 msg_type)
 {
 	return subsys << 8 | msg_type;
 }
 
+static inline void nfnl_fill_hdr(struct nlmsghdr *nlh, u8 family, u8 version,
+				 __be16 res_id)
+{
+	struct nfgenmsg *nfmsg;
+
+	nfmsg = nlmsg_data(nlh);
+	nfmsg->nfgen_family = family;
+	nfmsg->version = version;
+	nfmsg->res_id = res_id;
+}
+
+static inline struct nlmsghdr *nfnl_msg_put(struct sk_buff *skb, u32 portid,
+					    u32 seq, int type, int flags,
+					    u8 family, u8 version,
+					    __be16 res_id)
+{
+	struct nlmsghdr *nlh;
+
+	nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags);
+	if (!nlh)
+		return NULL;
+
+	nfnl_fill_hdr(nlh, family, version, res_id);
+
+	return nlh;
+}
+
 void nfnl_lock(__u8 subsys_id);
 void nfnl_unlock(__u8 subsys_id);
 #ifdef CONFIG_PROVE_LOCKING