[NET]: {get|set}sockopt compatibility layer

This patch extends {get|set}sockopt compatibility layer in order to
move protocol specific parts to their place and avoid huge universal
net/compat.c file in the future.

Signed-off-by: Dmitry Mishin <dim@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 files changed, 61 insertions, 0 deletions

diff --git a/include/linux/net.h b/include/linux/net.h
index 28195a2..152fa65 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -149,6 +149,10 @@ struct proto_ops {
 				      int optname, char __user *optval, int optlen);
 	int		(*getsockopt)(struct socket *sock, int level,
 				      int optname, char __user *optval, int __user *optlen);
+	int		(*compat_setsockopt)(struct socket *sock, int level,
+				      int optname, char __user *optval, int optlen);
+	int		(*compat_getsockopt)(struct socket *sock, int level,
+				      int optname, char __user *optval, int __user *optlen);
 	int		(*sendmsg)   (struct kiocb *iocb, struct socket *sock,
 				      struct msghdr *m, size_t total_len);
 	int		(*recvmsg)   (struct kiocb *iocb, struct socket *sock,
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 4688969..412e52c 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -80,10 +80,14 @@ struct nf_sockopt_ops
 	int set_optmin;
 	int set_optmax;
 	int (*set)(struct sock *sk, int optval, void __user *user, unsigned int len);
+	int (*compat_set)(struct sock *sk, int optval,
+			void __user *user, unsigned int len);
 
 	int get_optmin;
 	int get_optmax;
 	int (*get)(struct sock *sk, int optval, void __user *user, int *len);
+	int (*compat_get)(struct sock *sk, int optval,
+			void __user *user, int *len);
 
 	/* Number of users inside set() or get(). */
 	unsigned int use;
@@ -246,6 +250,11 @@ int nf_setsockopt(struct sock *sk, int pf, int optval, char __user *opt,
 int nf_getsockopt(struct sock *sk, int pf, int optval, char __user *opt,
 		  int *len);
 
+int compat_nf_setsockopt(struct sock *sk, int pf, int optval,
+		char __user *opt, int len);
+int compat_nf_getsockopt(struct sock *sk, int pf, int optval,
+		char __user *opt, int *len);
+
 /* Packet queuing */
 struct nf_queue_handler {
 	int (*outfn)(struct sk_buff *skb, struct nf_info *info,
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 363a067..ae61331 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -50,6 +50,12 @@ struct inet_connection_sock_af_ops {
 				  char __user *optval, int optlen);
 	int	    (*getsockopt)(struct sock *sk, int level, int optname, 
 				  char __user *optval, int __user *optlen);
+	int	    (*compat_setsockopt)(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int optlen);
+	int	    (*compat_getsockopt)(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int __user *optlen);
 	void	    (*addr2sockaddr)(struct sock *sk, struct sockaddr *);
 	int sockaddr_len;
 };
diff --git a/include/net/ip.h b/include/net/ip.h
index fab3d5b..8fe6156 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -356,6 +356,10 @@ extern void	ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb);
 extern int	ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc);
 extern int	ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, int optlen);
 extern int	ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen);
+extern int	compat_ip_setsockopt(struct sock *sk, int level,
+			int optname, char __user *optval, int optlen);
+extern int	compat_ip_getsockopt(struct sock *sk, int level,
+			int optname, char __user *optval, int __user *optlen);
 extern int	ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *));
 
 extern int 	ip_recv_error(struct sock *sk, struct msghdr *msg, int len);
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index c893a1c..6d6f063 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -520,6 +520,16 @@ extern int			ipv6_getsockopt(struct sock *sk, int level,
 						int optname,
 						char __user *optval, 
 						int __user *optlen);
+extern int			compat_ipv6_setsockopt(struct sock *sk,
+						int level,
+						int optname,
+						char __user *optval,
+						int optlen);
+extern int			compat_ipv6_getsockopt(struct sock *sk,
+						int level,
+						int optname,
+						char __user *optval,
+						int __user *optlen);
 
 extern void			ipv6_packet_init(void);
 
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 072f407..eba99f3 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -514,6 +514,16 @@ struct sctp_af {
 					 int optname,
 					 char __user *optval,
 					 int __user *optlen);
+	int		(*compat_setsockopt)	(struct sock *sk,
+					 int level,
+					 int optname,
+					 char __user *optval,
+					 int optlen);
+	int		(*compat_getsockopt)	(struct sock *sk,
+					 int level,
+					 int optname,
+					 char __user *optval,
+					 int __user *optlen);
 	struct dst_entry *(*get_dst)	(struct sctp_association *asoc,
 					 union sctp_addr *daddr,
 					 union sctp_addr *saddr);
diff --git a/include/net/sock.h b/include/net/sock.h
index f63d0d5..ec226f3 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -520,6 +520,14 @@ struct proto {
 	int			(*getsockopt)(struct sock *sk, int level, 
 					int optname, char __user *optval, 
 					int __user *option);  	 
+	int			(*compat_setsockopt)(struct sock *sk,
+					int level,
+					int optname, char __user *optval,
+					int optlen);
+	int			(*compat_getsockopt)(struct sock *sk,
+					int level,
+					int optname, char __user *optval,
+					int __user *option);
 	int			(*sendmsg)(struct kiocb *iocb, struct sock *sk,
 					   struct msghdr *msg, size_t len);
 	int			(*recvmsg)(struct kiocb *iocb, struct sock *sk,
@@ -816,6 +824,10 @@ extern int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
 			       struct msghdr *msg, size_t size, int flags);
 extern int sock_common_setsockopt(struct socket *sock, int level, int optname,
 				  char __user *optval, int optlen);
+extern int compat_sock_common_getsockopt(struct socket *sock, int level,
+		int optname, char __user *optval, int __user *optlen);
+extern int compat_sock_common_setsockopt(struct socket *sock, int level,
+		int optname, char __user *optval, int optlen);
 
 extern void sk_common_release(struct sock *sk);
 
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 457e224..9418f4d 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -353,6 +353,12 @@ extern int			tcp_getsockopt(struct sock *sk, int level,
 extern int			tcp_setsockopt(struct sock *sk, int level, 
 					       int optname, char __user *optval, 
 					       int optlen);
+extern int			compat_tcp_getsockopt(struct sock *sk,
+					int level, int optname,
+					char __user *optval, int __user *optlen);
+extern int			compat_tcp_setsockopt(struct sock *sk,
+					int level, int optname,
+					char __user *optval, int optlen);
 extern void			tcp_set_keepalive(struct sock *sk, int val);
 extern int			tcp_recvmsg(struct kiocb *iocb, struct sock *sk,
 					    struct msghdr *msg,