xen: update pvcalls_front_accept prototype

While currently there are no in-tree callers of these functions, it is
best to keep them up-to-date with the latest network API.

In addition, add the missing EXPORT_SYMBOL_GPL to the functions listed
in pvcalls-front.h.

Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <alpine.DEB.2.22.394.2501201537560.11086@ubuntu-linux-20-04-desktop>
Signed-off-by: Juergen Gross <jgross@suse.com>

Author: sstabellini

drivers/xen/pvcalls-front.c

@@ -341,6 +341,7 @@ int pvcalls_front_socket(struct socket *sock)
 	pvcalls_exit();
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_socket);
 
 static void free_active_ring(struct sock_mapping *map)
 {
@@ -486,6 +487,7 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_connect);
 
 static int __write_ring(struct pvcalls_data_intf *intf,
 			struct pvcalls_data *data,
@@ -581,6 +583,7 @@ int pvcalls_front_sendmsg(struct socket *sock, struct msghdr *msg,
 	pvcalls_exit_sock(sock);
 	return tot_sent;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_sendmsg);
 
 static int __read_ring(struct pvcalls_data_intf *intf,
 		       struct pvcalls_data *data,
@@ -666,6 +669,7 @@ int pvcalls_front_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_recvmsg);
 
 int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
 {
@@ -719,6 +723,7 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
 	pvcalls_exit_sock(sock);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_bind);
 
 int pvcalls_front_listen(struct socket *sock, int backlog)
 {
@@ -768,8 +773,10 @@ int pvcalls_front_listen(struct socket *sock, int backlog)
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_listen);
 
-int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
+int pvcalls_front_accept(struct socket *sock, struct socket *newsock,
+			 struct proto_accept_arg *arg)
 {
 	struct pvcalls_bedata *bedata;
 	struct sock_mapping *map;
@@ -788,7 +795,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
 		return -EINVAL;
 	}
 
-	nonblock = flags & SOCK_NONBLOCK;
+	nonblock = arg->flags & SOCK_NONBLOCK;
 	/*
 	 * Backend only supports 1 inflight accept request, will return
 	 * errors for the others
@@ -904,6 +911,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_accept);
 
 static __poll_t pvcalls_front_poll_passive(struct file *file,
 					       struct pvcalls_bedata *bedata,
@@ -1004,6 +1012,7 @@ __poll_t pvcalls_front_poll(struct file *file, struct socket *sock,
 	pvcalls_exit_sock(sock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_poll);
 
 int pvcalls_front_release(struct socket *sock)
 {
@@ -1087,6 +1096,7 @@ int pvcalls_front_release(struct socket *sock)
 	pvcalls_exit();
 	return 0;
 }
+EXPORT_SYMBOL_GPL(pvcalls_front_release);
 
 static const struct xenbus_device_id pvcalls_front_ids[] = {
 	{ "pvcalls" },

drivers/xen/pvcalls-front.h

@@ -12,7 +12,7 @@ int pvcalls_front_bind(struct socket *sock,
 int pvcalls_front_listen(struct socket *sock, int backlog);
 int pvcalls_front_accept(struct socket *sock,
 			 struct socket *newsock,
-			 int flags);
+			 struct proto_accept_arg *arg);
 int pvcalls_front_sendmsg(struct socket *sock,
 			  struct msghdr *msg,
 			  size_t len);