iucv: introduce loadable iucv interface

This patch adds a symbol to dynamically load iucv functions. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>

iucv: introduce loadable iucv interface
This patch adds a symbol to dynamically load iucv functions. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Frank Blaschka · David S. Miller
1 parent 99558ea93c
Showing 2 changed files with 58 additions and 1 deletions Side-by-side Diff
include/net/iucv/iucv.h
net/iucv/iucv.c
@@ -120,7 +120,7 @@
 	u32 reply_size;
 	u8  rmmsg[8];
 	u8  flags;
-};
+} __packed;
  
 /*
  * struct iucv_handler
@@ -459,4 +459,38 @@
 int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg,
 			  u8 flags, u32 srccls, void *buffer, size_t size,
 			  void *answer, size_t asize, size_t *residual);
+
+struct iucv_interface {
+	int (*message_receive)(struct iucv_path *path, struct iucv_message *msg,
+		u8 flags, void *buffer, size_t size, size_t *residual);
+	int (*__message_receive)(struct iucv_path *path,
+		struct iucv_message *msg, u8 flags, void *buffer, size_t size,
+		size_t *residual);
+	int (*message_reply)(struct iucv_path *path, struct iucv_message *msg,
+		u8 flags, void *reply, size_t size);
+	int (*message_reject)(struct iucv_path *path, struct iucv_message *msg);
+	int (*message_send)(struct iucv_path *path, struct iucv_message *msg,
+		u8 flags, u32 srccls, void *buffer, size_t size);
+	int (*__message_send)(struct iucv_path *path, struct iucv_message *msg,
+		u8 flags, u32 srccls, void *buffer, size_t size);
+	int (*message_send2way)(struct iucv_path *path,
+		struct iucv_message *msg, u8 flags, u32 srccls, void *buffer,
+		size_t size, void *answer, size_t asize, size_t *residual);
+	int (*message_purge)(struct iucv_path *path, struct iucv_message *msg,
+		u32 srccls);
+	int (*path_accept)(struct iucv_path *path, struct iucv_handler *handler,
+		u8 userdata[16], void *private);
+	int (*path_connect)(struct iucv_path *path,
+		struct iucv_handler *handler,
+		u8 userid[8], u8 system[8], u8 userdata[16], void *private);
+	int (*path_quiesce)(struct iucv_path *path, u8 userdata[16]);
+	int (*path_resume)(struct iucv_path *path, u8 userdata[16]);
+	int (*path_sever)(struct iucv_path *path, u8 userdata[16]);
+	int (*iucv_register)(struct iucv_handler *handler, int smp);
+	void (*iucv_unregister)(struct iucv_handler *handler, int smp);
+	struct bus_type *bus;
+	struct device *root;
+};
+
+extern struct iucv_interface iucv_if;
@@ -1974,6 +1974,27 @@
 	return rc;
 }
  
+struct iucv_interface iucv_if = {
+	.message_receive = iucv_message_receive,
+	.__message_receive = __iucv_message_receive,
+	.message_reply = iucv_message_reply,
+	.message_reject = iucv_message_reject,
+	.message_send = iucv_message_send,
+	.__message_send = __iucv_message_send,
+	.message_send2way = iucv_message_send2way,
+	.message_purge = iucv_message_purge,
+	.path_accept = iucv_path_accept,
+	.path_connect = iucv_path_connect,
+	.path_quiesce = iucv_path_quiesce,
+	.path_resume = iucv_path_resume,
+	.path_sever = iucv_path_sever,
+	.iucv_register = iucv_register,
+	.iucv_unregister = iucv_unregister,
+	.bus = NULL,
+	.root = NULL,
+};
+EXPORT_SYMBOL(iucv_if);
+
 /**
  * iucv_init
  *
@@ -2038,6 +2059,8 @@
 	rc = bus_register(&iucv_bus);
 	if (rc)
 		goto out_reboot;
+	iucv_if.root = iucv_root;
+	iucv_if.bus = &iucv_bus;
 	return 0;
  
 out_reboot:
...	...	@@ -120,7 +120,7 @@
120	120	u32 reply_size;
121	121	u8 rmmsg[8];
122	122	u8 flags;
123		-};
	123	+} __packed;
124	124
125	125	/*
126	126	* struct iucv_handler
...	...	@@ -459,4 +459,38 @@
459	459	int iucv_message_send2way(struct iucv_path path, struct iucv_message msg,
460	460	u8 flags, u32 srccls, void *buffer, size_t size,
461	461	void answer, size_t asize, size_t residual);
	462	+
	463	+struct iucv_interface {
	464	+ int (message_receive)(struct iucv_path path, struct iucv_message *msg,
	465	+ u8 flags, void buffer, size_t size, size_t residual);
	466	+ int (__message_receive)(struct iucv_path path,
	467	+ struct iucv_message msg, u8 flags, void buffer, size_t size,
	468	+ size_t *residual);
	469	+ int (message_reply)(struct iucv_path path, struct iucv_message *msg,
	470	+ u8 flags, void *reply, size_t size);
	471	+ int (message_reject)(struct iucv_path path, struct iucv_message *msg);
	472	+ int (message_send)(struct iucv_path path, struct iucv_message *msg,
	473	+ u8 flags, u32 srccls, void *buffer, size_t size);
	474	+ int (__message_send)(struct iucv_path path, struct iucv_message *msg,
	475	+ u8 flags, u32 srccls, void *buffer, size_t size);
	476	+ int (message_send2way)(struct iucv_path path,
	477	+ struct iucv_message msg, u8 flags, u32 srccls, void buffer,
	478	+ size_t size, void answer, size_t asize, size_t residual);
	479	+ int (message_purge)(struct iucv_path path, struct iucv_message *msg,
	480	+ u32 srccls);
	481	+ int (path_accept)(struct iucv_path path, struct iucv_handler *handler,
	482	+ u8 userdata[16], void *private);
	483	+ int (path_connect)(struct iucv_path path,
	484	+ struct iucv_handler *handler,
	485	+ u8 userid[8], u8 system[8], u8 userdata[16], void *private);
	486	+ int (path_quiesce)(struct iucv_path path, u8 userdata[16]);
	487	+ int (path_resume)(struct iucv_path path, u8 userdata[16]);
	488	+ int (path_sever)(struct iucv_path path, u8 userdata[16]);
	489	+ int (iucv_register)(struct iucv_handler handler, int smp);
	490	+ void (iucv_unregister)(struct iucv_handler handler, int smp);
	491	+ struct bus_type *bus;
	492	+ struct device *root;
	493	+};
	494	+
	495	+extern struct iucv_interface iucv_if;
...	...	@@ -1974,6 +1974,27 @@
1974	1974	return rc;
1975	1975	}
1976	1976
	1977	+struct iucv_interface iucv_if = {
	1978	+ .message_receive = iucv_message_receive,
	1979	+ .__message_receive = __iucv_message_receive,
	1980	+ .message_reply = iucv_message_reply,
	1981	+ .message_reject = iucv_message_reject,
	1982	+ .message_send = iucv_message_send,
	1983	+ .__message_send = __iucv_message_send,
	1984	+ .message_send2way = iucv_message_send2way,
	1985	+ .message_purge = iucv_message_purge,
	1986	+ .path_accept = iucv_path_accept,
	1987	+ .path_connect = iucv_path_connect,
	1988	+ .path_quiesce = iucv_path_quiesce,
	1989	+ .path_resume = iucv_path_resume,
	1990	+ .path_sever = iucv_path_sever,
	1991	+ .iucv_register = iucv_register,
	1992	+ .iucv_unregister = iucv_unregister,
	1993	+ .bus = NULL,
	1994	+ .root = NULL,
	1995	+};
	1996	+EXPORT_SYMBOL(iucv_if);
	1997	+
1977	1998	/**
1978	1999	* iucv_init
1979	2000	*
...	...	@@ -2038,6 +2059,8 @@
2038	2059	rc = bus_register(&iucv_bus);
2039	2060	if (rc)
2040	2061	goto out_reboot;
	2062	+ iucv_if.root = iucv_root;
	2063	+ iucv_if.bus = &iucv_bus;
2041	2064	return 0;
2042	2065
2043	2066	out_reboot: