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[S390]: Adapt special message interface to new IUCV API

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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 2007-02-08 13:51:11 -08:00 committed by David S. Miller
parent eebce38567
commit 5da5e658de
1 changed files with 74 additions and 73 deletions
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147
drivers/s390/net/smsgiucv.c
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@ -1,7 +1,7 @@
/* /*
* IUCV special message driver * 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) * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
* *
* This program is free software; you can redistribute it and/or modify * This program is free software; you can redistribute it and/or modify
@ -23,10 +23,10 @@
#include <linux/init.h> #include <linux/init.h>
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/device.h> #include <linux/device.h>
#include <net/iucv/iucv.h>
#include <asm/cpcmd.h> #include <asm/cpcmd.h>
#include <asm/ebcdic.h> #include <asm/ebcdic.h>
#include "smsgiucv.h"
#include "iucv.h"
struct smsg_callback { struct smsg_callback {
struct list_head list; struct list_head list;
@ -39,38 +39,46 @@ MODULE_AUTHOR
("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)"); ("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)");
MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver"); MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
static iucv_handle_t smsg_handle; static struct iucv_path *smsg_path;
static unsigned short smsg_pathid;
static DEFINE_SPINLOCK(smsg_list_lock); static DEFINE_SPINLOCK(smsg_list_lock);
static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list); static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
static void static int smsg_path_pending(struct iucv_path *, u8 ipvmid[8], u8 ipuser[16]);
smsg_connection_complete(iucv_ConnectionComplete *eib, void *pgm_data) 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(struct iucv_path *path,
static void struct iucv_message *msg)
smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
{ {
struct smsg_callback *cb; struct smsg_callback *cb;
unsigned char *msg; unsigned char *buffer;
unsigned char sender[9]; unsigned char sender[9];
unsigned short len;
int rc, i; int rc, i;
len = eib->ln1msg2.ipbfln1f; buffer = kmalloc(msg->length + 1, GFP_ATOMIC | GFP_DMA);
msg = kmalloc(len + 1, GFP_ATOMIC|GFP_DMA); if (!buffer) {
if (!msg) { iucv_message_reject(path, msg);
iucv_reject(eib->ippathid, eib->ipmsgid, eib->iptrgcls);
return; return;
} }
rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls, rc = iucv_message_receive(path, msg, 0, buffer, msg->length, NULL);
msg, len, NULL, NULL, NULL);
if (rc == 0) { if (rc == 0) {
msg[len] = 0; buffer[msg->length] = 0;
EBCASC(msg, len); EBCASC(buffer, msg->length);
memcpy(sender, msg, 8); memcpy(sender, buffer, 8);
sender[8] = 0; sender[8] = 0;
/* Remove trailing whitespace from the sender name. */ /* Remove trailing whitespace from the sender name. */
for (i = 7; i >= 0; i--) { for (i = 7; i >= 0; i--) {
@ -80,27 +88,17 @@ smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
} }
spin_lock(&smsg_list_lock); spin_lock(&smsg_list_lock);
list_for_each_entry(cb, &smsg_list, list) list_for_each_entry(cb, &smsg_list, list)
if (strncmp(msg + 8, cb->prefix, cb->len) == 0) { if (strncmp(buffer + 8, cb->prefix, cb->len) == 0) {
cb->callback(sender, msg + 8); cb->callback(sender, buffer + 8);
break; break;
} }
spin_unlock(&smsg_list_lock); spin_unlock(&smsg_list_lock);
} }
kfree(msg); kfree(buffer);
} }
static iucv_interrupt_ops_t smsg_ops = { int smsg_register_callback(char *prefix,
.ConnectionComplete = smsg_connection_complete, void (*callback)(char *from, char *str))
.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))
{ {
struct smsg_callback *cb; struct smsg_callback *cb;
@ -110,18 +108,18 @@ smsg_register_callback(char *prefix, void (*callback)(char *from, char *str))
cb->prefix = prefix; cb->prefix = prefix;
cb->len = strlen(prefix); cb->len = strlen(prefix);
cb->callback = callback; cb->callback = callback;
spin_lock(&smsg_list_lock); spin_lock_bh(&smsg_list_lock);
list_add_tail(&cb->list, &smsg_list); list_add_tail(&cb->list, &smsg_list);
spin_unlock(&smsg_list_lock); spin_unlock_bh(&smsg_list_lock);
return 0; return 0;
} }
void void smsg_unregister_callback(char *prefix,
smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str)) void (*callback)(char *from, char *str))
{ {
struct smsg_callback *cb, *tmp; struct smsg_callback *cb, *tmp;
spin_lock(&smsg_list_lock); spin_lock_bh(&smsg_list_lock);
cb = NULL; cb = NULL;
list_for_each_entry(tmp, &smsg_list, list) list_for_each_entry(tmp, &smsg_list, list)
if (tmp->callback == callback && if (tmp->callback == callback &&
@ -130,55 +128,58 @@ smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
list_del(&cb->list); list_del(&cb->list);
break; break;
} }
spin_unlock(&smsg_list_lock); spin_unlock_bh(&smsg_list_lock);
kfree(cb); kfree(cb);
} }
static void __exit static struct device_driver smsg_driver = {
smsg_exit(void) .name = "SMSGIUCV",
.bus = &iucv_bus,
};
static void __exit smsg_exit(void)
{ {
if (smsg_handle > 0) { cpcmd("SET SMSG IUCV", NULL, 0, NULL);
cpcmd("SET SMSG OFF", NULL, 0, NULL); iucv_unregister(&smsg_handler, 1);
iucv_sever(smsg_pathid, NULL); driver_unregister(&smsg_driver);
iucv_unregister_program(smsg_handle);
driver_unregister(&smsg_driver);
}
return;
} }
static int __init static int __init smsg_init(void)
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; int rc;
rc = driver_register(&smsg_driver); rc = driver_register(&smsg_driver);
if (rc != 0) { if (rc != 0)
printk(KERN_ERR "SMSGIUCV: failed to register driver.\n"); goto out;
return rc; rc = iucv_register(&smsg_handler, 1);
} if (rc) {
smsg_handle = iucv_register_program("SMSGIUCV ", "*MSG ",
pgmmask, &smsg_ops, NULL);
if (!smsg_handle) {
printk(KERN_ERR "SMSGIUCV: failed to register to iucv"); printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
driver_unregister(&smsg_driver); rc = -EIO; /* better errno ? */
return -EIO; /* better errno ? */ goto out_driver;
} }
rc = iucv_connect (&smsg_pathid, 255, NULL, "*MSG ", NULL, 0, smsg_path = iucv_path_alloc(255, 0, GFP_KERNEL);
NULL, NULL, smsg_handle, NULL); if (!smsg_path) {
rc = -ENOMEM;
goto out_register;
}
rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG ",
NULL, NULL, NULL);
if (rc) { if (rc) {
printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG"); printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
iucv_unregister_program(smsg_handle); rc = -EIO; /* better errno ? */
driver_unregister(&smsg_driver); goto out_free;
smsg_handle = NULL;
return -EIO;
} }
cpcmd("SET SMSG IUCV", NULL, 0, NULL); cpcmd("SET SMSG IUCV", NULL, 0, NULL);
return 0; 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); module_init(smsg_init);