[NETLINK]: Use size_t for size in {send,recv}msg.

net/key/af_key.c

@@ -2655,7 +2655,7 @@ static int pfkey_send_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
 }
 
 static int pfkey_sendmsg(struct kiocb *kiocb,
-			 struct socket *sock, struct msghdr *msg, int len)
+			 struct socket *sock, struct msghdr *msg, size_t len)
 {
 	struct sock *sk = sock->sk;
 	struct sk_buff *skb = NULL;
@@ -2697,7 +2697,7 @@ static int pfkey_sendmsg(struct kiocb *kiocb,
 }
 
 static int pfkey_recvmsg(struct kiocb *kiocb,
-			 struct socket *sock, struct msghdr *msg, int len,
+			 struct socket *sock, struct msghdr *msg, size_t len,
 			 int flags)
 {
 	struct sock *sk = sock->sk;

net/netlink/af_netlink.c

@@ -601,7 +601,7 @@ static inline void netlink_rcv_wake(struct sock *sk)
 }
 
 static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
-			   struct msghdr *msg, int len)
+			   struct msghdr *msg, size_t len)
 {
 	struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
 	struct sock *sk = sock->sk;
@@ -641,7 +641,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
 	}
 
 	err = -EMSGSIZE;
-	if ((unsigned)len > sk->sk_sndbuf - 32)
+	if (len > sk->sk_sndbuf - 32)
 		goto out;
 	err = -ENOBUFS;
 	skb = alloc_skb(len, GFP_KERNEL);
@@ -683,7 +683,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
 }
 
 static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
-			   struct msghdr *msg, int len,
+			   struct msghdr *msg, size_t len,
 			   int flags)
 {
 	struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
@@ -691,7 +691,7 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
 	struct sock *sk = sock->sk;
 	struct netlink_opt *nlk = nlk_sk(sk);
 	int noblock = flags&MSG_DONTWAIT;
-	int copied;
+	size_t copied;
 	struct sk_buff *skb;
 	int err;
 

net/packet/af_packet.c

@@ -284,7 +284,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,  struct
  */
  
 static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
-			       struct msghdr *msg, int len)
+			       struct msghdr *msg, size_t len)
 {
 	struct sock *sk = sock->sk;
 	struct sockaddr_pkt *saddr=(struct sockaddr_pkt *)msg->msg_name;
@@ -659,7 +659,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,  struct pack
 
 
 static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
-			  struct msghdr *msg, int len)
+			  struct msghdr *msg, size_t len)
 {
 	struct sock *sk = sock->sk;
 	struct sockaddr_ll *saddr=(struct sockaddr_ll *)msg->msg_name;
@@ -1007,7 +1007,7 @@ static int packet_create(struct socket *sock, int protocol)
  */
 
 static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
-			  struct msghdr *msg, int len, int flags)
+			  struct msghdr *msg, size_t len, int flags)
 {
 	struct sock *sk = sock->sk;
 	struct sk_buff *skb;