[S390]: Adapt special message interface to new IUCV API
Adapt special message interface to new IUCV API Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Schwidefsky
David S. Miller
parent
eebce38567
commit
5da5e658de
|
|
@ -1,7 +1,7 @@
|
|||
/*
|
||||
* IUCV special message driver
|
||||
*
|
||||
* Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
||||
* Copyright 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
||||
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
|
|
@ -23,10 +23,10 @@
|
|||
#include <linux/init.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/device.h>
|
||||
#include <net/iucv/iucv.h>
|
||||
#include <asm/cpcmd.h>
|
||||
#include <asm/ebcdic.h>
|
||||
|
||||
#include "iucv.h"
|
||||
#include "smsgiucv.h"
|
||||
|
||||
struct smsg_callback {
|
||||
struct list_head list;
|
||||
|
|
@ -39,38 +39,46 @@ MODULE_AUTHOR
|
|||
("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)");
|
||||
MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
|
||||
|
||||
static iucv_handle_t smsg_handle;
|
||||
static unsigned short smsg_pathid;
|
||||
static struct iucv_path *smsg_path;
|
||||
|
||||
static DEFINE_SPINLOCK(smsg_list_lock);
|
||||
static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
|
||||
|
||||
static void
|
||||
smsg_connection_complete(iucv_ConnectionComplete *eib, void *pgm_data)
|
||||
static int smsg_path_pending(struct iucv_path *, u8 ipvmid[8], u8 ipuser[16]);
|
||||
static void smsg_message_pending(struct iucv_path *, struct iucv_message *);
|
||||
|
||||
static struct iucv_handler smsg_handler = {
|
||||
.path_pending = smsg_path_pending,
|
||||
.message_pending = smsg_message_pending,
|
||||
};
|
||||
|
||||
static int smsg_path_pending(struct iucv_path *path, u8 ipvmid[8],
|
||||
u8 ipuser[16])
|
||||
{
|
||||
if (strncmp(ipvmid, "*MSG ", sizeof(ipvmid)) != 0)
|
||||
return -EINVAL;
|
||||
/* Path pending from *MSG. */
|
||||
return iucv_path_accept(path, &smsg_handler, "SMSGIUCV ", NULL);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
|
||||
static void smsg_message_pending(struct iucv_path *path,
|
||||
struct iucv_message *msg)
|
||||
{
|
||||
struct smsg_callback *cb;
|
||||
unsigned char *msg;
|
||||
unsigned char *buffer;
|
||||
unsigned char sender[9];
|
||||
unsigned short len;
|
||||
int rc, i;
|
||||
|
||||
len = eib->ln1msg2.ipbfln1f;
|
||||
msg = kmalloc(len + 1, GFP_ATOMIC|GFP_DMA);
|
||||
if (!msg) {
|
||||
iucv_reject(eib->ippathid, eib->ipmsgid, eib->iptrgcls);
|
||||
buffer = kmalloc(msg->length + 1, GFP_ATOMIC | GFP_DMA);
|
||||
if (!buffer) {
|
||||
iucv_message_reject(path, msg);
|
||||
return;
|
||||
}
|
||||
rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls,
|
||||
msg, len, NULL, NULL, NULL);
|
||||
rc = iucv_message_receive(path, msg, 0, buffer, msg->length, NULL);
|
||||
if (rc == 0) {
|
||||
msg[len] = 0;
|
||||
EBCASC(msg, len);
|
||||
memcpy(sender, msg, 8);
|
||||
buffer[msg->length] = 0;
|
||||
EBCASC(buffer, msg->length);
|
||||
memcpy(sender, buffer, 8);
|
||||
sender[8] = 0;
|
||||
/* Remove trailing whitespace from the sender name. */
|
||||
for (i = 7; i >= 0; i--) {
|
||||
|
|
@ -80,27 +88,17 @@ smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
|
|||
}
|
||||
spin_lock(&smsg_list_lock);
|
||||
list_for_each_entry(cb, &smsg_list, list)
|
||||
if (strncmp(msg + 8, cb->prefix, cb->len) == 0) {
|
||||
cb->callback(sender, msg + 8);
|
||||
if (strncmp(buffer + 8, cb->prefix, cb->len) == 0) {
|
||||
cb->callback(sender, buffer + 8);
|
||||
break;
|
||||
}
|
||||
spin_unlock(&smsg_list_lock);
|
||||
}
|
||||
kfree(msg);
|
||||
kfree(buffer);
|
||||
}
|
||||
|
||||
static iucv_interrupt_ops_t smsg_ops = {
|
||||
.ConnectionComplete = smsg_connection_complete,
|
||||
.MessagePending = smsg_message_pending,
|
||||
};
|
||||
|
||||
static struct device_driver smsg_driver = {
|
||||
.name = "SMSGIUCV",
|
||||
.bus = &iucv_bus,
|
||||
};
|
||||
|
||||
int
|
||||
smsg_register_callback(char *prefix, void (*callback)(char *from, char *str))
|
||||
int smsg_register_callback(char *prefix,
|
||||
void (*callback)(char *from, char *str))
|
||||
{
|
||||
struct smsg_callback *cb;
|
||||
|
||||
|
|
@ -110,18 +108,18 @@ smsg_register_callback(char *prefix, void (*callback)(char *from, char *str))
|
|||
cb->prefix = prefix;
|
||||
cb->len = strlen(prefix);
|
||||
cb->callback = callback;
|
||||
spin_lock(&smsg_list_lock);
|
||||
spin_lock_bh(&smsg_list_lock);
|
||||
list_add_tail(&cb->list, &smsg_list);
|
||||
spin_unlock(&smsg_list_lock);
|
||||
spin_unlock_bh(&smsg_list_lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
|
||||
void smsg_unregister_callback(char *prefix,
|
||||
void (*callback)(char *from, char *str))
|
||||
{
|
||||
struct smsg_callback *cb, *tmp;
|
||||
|
||||
spin_lock(&smsg_list_lock);
|
||||
spin_lock_bh(&smsg_list_lock);
|
||||
cb = NULL;
|
||||
list_for_each_entry(tmp, &smsg_list, list)
|
||||
if (tmp->callback == callback &&
|
||||
|
|
@ -130,55 +128,58 @@ smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
|
|||
list_del(&cb->list);
|
||||
break;
|
||||
}
|
||||
spin_unlock(&smsg_list_lock);
|
||||
spin_unlock_bh(&smsg_list_lock);
|
||||
kfree(cb);
|
||||
}
|
||||
|
||||
static void __exit
|
||||
smsg_exit(void)
|
||||
static struct device_driver smsg_driver = {
|
||||
.name = "SMSGIUCV",
|
||||
.bus = &iucv_bus,
|
||||
};
|
||||
|
||||
static void __exit smsg_exit(void)
|
||||
{
|
||||
if (smsg_handle > 0) {
|
||||
cpcmd("SET SMSG OFF", NULL, 0, NULL);
|
||||
iucv_sever(smsg_pathid, NULL);
|
||||
iucv_unregister_program(smsg_handle);
|
||||
driver_unregister(&smsg_driver);
|
||||
}
|
||||
return;
|
||||
cpcmd("SET SMSG IUCV", NULL, 0, NULL);
|
||||
iucv_unregister(&smsg_handler, 1);
|
||||
driver_unregister(&smsg_driver);
|
||||
}
|
||||
|
||||
static int __init
|
||||
smsg_init(void)
|
||||
static int __init smsg_init(void)
|
||||
{
|
||||
static unsigned char pgmmask[24] = {
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
|
||||
};
|
||||
int rc;
|
||||
|
||||
rc = driver_register(&smsg_driver);
|
||||
if (rc != 0) {
|
||||
printk(KERN_ERR "SMSGIUCV: failed to register driver.\n");
|
||||
return rc;
|
||||
}
|
||||
smsg_handle = iucv_register_program("SMSGIUCV ", "*MSG ",
|
||||
pgmmask, &smsg_ops, NULL);
|
||||
if (!smsg_handle) {
|
||||
if (rc != 0)
|
||||
goto out;
|
||||
rc = iucv_register(&smsg_handler, 1);
|
||||
if (rc) {
|
||||
printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
|
||||
driver_unregister(&smsg_driver);
|
||||
return -EIO; /* better errno ? */
|
||||
rc = -EIO; /* better errno ? */
|
||||
goto out_driver;
|
||||
}
|
||||
rc = iucv_connect (&smsg_pathid, 255, NULL, "*MSG ", NULL, 0,
|
||||
NULL, NULL, smsg_handle, NULL);
|
||||
smsg_path = iucv_path_alloc(255, 0, GFP_KERNEL);
|
||||
if (!smsg_path) {
|
||||
rc = -ENOMEM;
|
||||
goto out_register;
|
||||
}
|
||||
rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG ",
|
||||
NULL, NULL, NULL);
|
||||
if (rc) {
|
||||
printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
|
||||
iucv_unregister_program(smsg_handle);
|
||||
driver_unregister(&smsg_driver);
|
||||
smsg_handle = NULL;
|
||||
return -EIO;
|
||||
rc = -EIO; /* better errno ? */
|
||||
goto out_free;
|
||||
}
|
||||
cpcmd("SET SMSG IUCV", NULL, 0, NULL);
|
||||
return 0;
|
||||
|
||||
out_free:
|
||||
iucv_path_free(smsg_path);
|
||||
out_register:
|
||||
iucv_unregister(&smsg_handler, 1);
|
||||
out_driver:
|
||||
driver_unregister(&smsg_driver);
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
|
||||
module_init(smsg_init);
|
||||
|
|
|
|||
Reference in New Issue