Merge branch 'inet_diag_cleanups'

Eric Dumazet says:

====================
inet_diag: cleanups and improvements

Before changing way request socks are dumped, let's clean up this code
a bit.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/inet_diag.h

@@ -11,33 +11,34 @@ struct sk_buff;
 struct netlink_callback;
 
 struct inet_diag_handler {
-	void			(*dump)(struct sk_buff *skb,
-					struct netlink_callback *cb,
-					struct inet_diag_req_v2 *r,
-					struct nlattr *bc);
-
-	int			(*dump_one)(struct sk_buff *in_skb,
-					const struct nlmsghdr *nlh,
-					struct inet_diag_req_v2 *req);
-
-	void			(*idiag_get_info)(struct sock *sk,
-						  struct inet_diag_msg *r,
-						  void *info);
-	__u16                   idiag_type;
+	void		(*dump)(struct sk_buff *skb,
+				struct netlink_callback *cb,
+				const struct inet_diag_req_v2 *r,
+				struct nlattr *bc);
+
+	int		(*dump_one)(struct sk_buff *in_skb,
+				    const struct nlmsghdr *nlh,
+				    const struct inet_diag_req_v2 *req);
+
+	void		(*idiag_get_info)(struct sock *sk,
+					  struct inet_diag_msg *r,
+					  void *info);
+	__u16		idiag_type;
 };
 
 struct inet_connection_sock;
 int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
-			      struct sk_buff *skb, struct inet_diag_req_v2 *req,
-			      struct user_namespace *user_ns,
-			      u32 pid, u32 seq, u16 nlmsg_flags,
-			      const struct nlmsghdr *unlh);
+		      struct sk_buff *skb, const struct inet_diag_req_v2 *req,
+		      struct user_namespace *user_ns,
+		      u32 pid, u32 seq, u16 nlmsg_flags,
+		      const struct nlmsghdr *unlh);
 void inet_diag_dump_icsk(struct inet_hashinfo *h, struct sk_buff *skb,
-		struct netlink_callback *cb, struct inet_diag_req_v2 *r,
-		struct nlattr *bc);
+			 struct netlink_callback *cb,
+			 const struct inet_diag_req_v2 *r,
+			 struct nlattr *bc);
 int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
-		struct sk_buff *in_skb, const struct nlmsghdr *nlh,
-		struct inet_diag_req_v2 *req);
+			    struct sk_buff *in_skb, const struct nlmsghdr *nlh,
+			    const struct inet_diag_req_v2 *req);
 
 int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
 

include/linux/sock_diag.h

@@ -19,7 +19,7 @@ void sock_diag_unregister(const struct sock_diag_handler *h);
 void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));
 void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh));
 
-int sock_diag_check_cookie(void *sk, __u32 *cookie);
+int sock_diag_check_cookie(void *sk, const __u32 *cookie);
 void sock_diag_save_cookie(void *sk, __u32 *cookie);
 
 int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);

net/core/sock_diag.c

@@ -13,7 +13,7 @@ static const struct sock_diag_handler *sock_diag_handlers[AF_MAX];
 static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh);
 static DEFINE_MUTEX(sock_diag_table_mutex);
 
-int sock_diag_check_cookie(void *sk, __u32 *cookie)
+int sock_diag_check_cookie(void *sk, const __u32 *cookie)
 {
 	if ((cookie[0] != INET_DIAG_NOCOOKIE ||
 	     cookie[1] != INET_DIAG_NOCOOKIE) &&

net/dccp/diag.c

@@ -49,13 +49,14 @@ static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
 }
 
 static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
-		struct inet_diag_req_v2 *r, struct nlattr *bc)
+			   const struct inet_diag_req_v2 *r, struct nlattr *bc)
 {
 	inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r, bc);
 }
 
-static int dccp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
-		struct inet_diag_req_v2 *req)
+static int dccp_diag_dump_one(struct sk_buff *in_skb,
+			      const struct nlmsghdr *nlh,
+			      const struct inet_diag_req_v2 *req)
 {
 	return inet_diag_dump_one_icsk(&dccp_hashinfo, in_skb, nlh, req);
 }

net/ipv4/tcp_diag.c

@@ -34,13 +34,13 @@ static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
 }
 
 static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
-			  struct inet_diag_req_v2 *r, struct nlattr *bc)
+			  const struct inet_diag_req_v2 *r, struct nlattr *bc)
 {
 	inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r, bc);
 }
 
 static int tcp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
-			     struct inet_diag_req_v2 *req)
+			     const struct inet_diag_req_v2 *req)
 {
 	return inet_diag_dump_one_icsk(&tcp_hashinfo, in_skb, nlh, req);
 }

net/ipv4/udp_diag.c

@@ -18,8 +18,9 @@
 #include <linux/sock_diag.h>
 
 static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
-		struct netlink_callback *cb, struct inet_diag_req_v2 *req,
-		struct nlattr *bc)
+			struct netlink_callback *cb,
+			const struct inet_diag_req_v2 *req,
+			struct nlattr *bc)
 {
 	if (!inet_diag_bc_sk(bc, sk))
 		return 0;
@@ -31,7 +32,8 @@ static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
 }
 
 static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb,
-		const struct nlmsghdr *nlh, struct inet_diag_req_v2 *req)
+			const struct nlmsghdr *nlh,
+			const struct inet_diag_req_v2 *req)
 {
 	int err = -EINVAL;
 	struct sock *sk;
@@ -90,8 +92,9 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb,
 	return err;
 }
 
-static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlink_callback *cb,
-		struct inet_diag_req_v2 *r, struct nlattr *bc)
+static void udp_dump(struct udp_table *table, struct sk_buff *skb,
+		     struct netlink_callback *cb,
+		     const struct inet_diag_req_v2 *r, struct nlattr *bc)
 {
 	int num, s_num, slot, s_slot;
 	struct net *net = sock_net(skb->sk);
@@ -144,13 +147,13 @@ static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlin
 }
 
 static void udp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
-		struct inet_diag_req_v2 *r, struct nlattr *bc)
+			  const struct inet_diag_req_v2 *r, struct nlattr *bc)
 {
 	udp_dump(&udp_table, skb, cb, r, bc);
 }
 
 static int udp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
-		struct inet_diag_req_v2 *req)
+			     const struct inet_diag_req_v2 *req)
 {
 	return udp_dump_one(&udp_table, in_skb, nlh, req);
 }
@@ -170,13 +173,14 @@ static const struct inet_diag_handler udp_diag_handler = {
 };
 
 static void udplite_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
-		struct inet_diag_req_v2 *r, struct nlattr *bc)
+			      const struct inet_diag_req_v2 *r,
+			      struct nlattr *bc)
 {
 	udp_dump(&udplite_table, skb, cb, r, bc);
 }
 
 static int udplite_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
-		struct inet_diag_req_v2 *req)
+				 const struct inet_diag_req_v2 *req)
 {
 	return udp_dump_one(&udplite_table, in_skb, nlh, req);
 }