[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 changed files with 74 additions and 73 deletions
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@ -1,7 +1,7 @@
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/*
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* IUCV special message driver
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*
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* Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Copyright 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
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*
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* This program is free software; you can redistribute it and/or modify
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@ -23,10 +23,10 @@
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/device.h>
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#include <net/iucv/iucv.h>
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#include <asm/cpcmd.h>
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#include <asm/ebcdic.h>
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#include "iucv.h"
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#include "smsgiucv.h"
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struct smsg_callback {
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struct list_head list;
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@ -39,38 +39,46 @@ MODULE_AUTHOR
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("(C) 2003 IBM Corporation by Martin Schwidefsky (schwidefsky@de.ibm.com)");
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MODULE_DESCRIPTION ("Linux for S/390 IUCV special message driver");
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static iucv_handle_t smsg_handle;
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static unsigned short smsg_pathid;
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static struct iucv_path *smsg_path;
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static DEFINE_SPINLOCK(smsg_list_lock);
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static struct list_head smsg_list = LIST_HEAD_INIT(smsg_list);
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static void
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smsg_connection_complete(iucv_ConnectionComplete *eib, void *pgm_data)
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static int smsg_path_pending(struct iucv_path *, u8 ipvmid[8], u8 ipuser[16]);
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static void smsg_message_pending(struct iucv_path *, struct iucv_message *);
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static struct iucv_handler smsg_handler = {
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.path_pending = smsg_path_pending,
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.message_pending = smsg_message_pending,
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};
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static int smsg_path_pending(struct iucv_path *path, u8 ipvmid[8],
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u8 ipuser[16])
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{
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if (strncmp(ipvmid, "*MSG ", sizeof(ipvmid)) != 0)
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return -EINVAL;
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/* Path pending from *MSG. */
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return iucv_path_accept(path, &smsg_handler, "SMSGIUCV ", NULL);
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}
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static void
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smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
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static void smsg_message_pending(struct iucv_path *path,
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struct iucv_message *msg)
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{
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struct smsg_callback *cb;
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unsigned char *msg;
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unsigned char *buffer;
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unsigned char sender[9];
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unsigned short len;
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int rc, i;
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len = eib->ln1msg2.ipbfln1f;
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msg = kmalloc(len + 1, GFP_ATOMIC|GFP_DMA);
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if (!msg) {
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iucv_reject(eib->ippathid, eib->ipmsgid, eib->iptrgcls);
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buffer = kmalloc(msg->length + 1, GFP_ATOMIC | GFP_DMA);
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if (!buffer) {
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iucv_message_reject(path, msg);
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return;
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}
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rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls,
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msg, len, NULL, NULL, NULL);
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rc = iucv_message_receive(path, msg, 0, buffer, msg->length, NULL);
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if (rc == 0) {
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msg[len] = 0;
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EBCASC(msg, len);
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memcpy(sender, msg, 8);
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buffer[msg->length] = 0;
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EBCASC(buffer, msg->length);
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memcpy(sender, buffer, 8);
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sender[8] = 0;
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/* Remove trailing whitespace from the sender name. */
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for (i = 7; i >= 0; i--) {
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@ -80,27 +88,17 @@ smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
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}
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spin_lock(&smsg_list_lock);
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list_for_each_entry(cb, &smsg_list, list)
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if (strncmp(msg + 8, cb->prefix, cb->len) == 0) {
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cb->callback(sender, msg + 8);
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if (strncmp(buffer + 8, cb->prefix, cb->len) == 0) {
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cb->callback(sender, buffer + 8);
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break;
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}
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spin_unlock(&smsg_list_lock);
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}
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kfree(msg);
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kfree(buffer);
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}
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static iucv_interrupt_ops_t smsg_ops = {
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.ConnectionComplete = smsg_connection_complete,
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.MessagePending = smsg_message_pending,
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};
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static struct device_driver smsg_driver = {
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.name = "SMSGIUCV",
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.bus = &iucv_bus,
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};
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int
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smsg_register_callback(char *prefix, void (*callback)(char *from, char *str))
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int smsg_register_callback(char *prefix,
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void (*callback)(char *from, char *str))
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{
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struct smsg_callback *cb;
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@ -110,18 +108,18 @@ smsg_register_callback(char *prefix, void (*callback)(char *from, char *str))
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cb->prefix = prefix;
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cb->len = strlen(prefix);
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cb->callback = callback;
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spin_lock(&smsg_list_lock);
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spin_lock_bh(&smsg_list_lock);
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list_add_tail(&cb->list, &smsg_list);
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spin_unlock(&smsg_list_lock);
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spin_unlock_bh(&smsg_list_lock);
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return 0;
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}
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void
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smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
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void smsg_unregister_callback(char *prefix,
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void (*callback)(char *from, char *str))
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{
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struct smsg_callback *cb, *tmp;
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spin_lock(&smsg_list_lock);
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spin_lock_bh(&smsg_list_lock);
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cb = NULL;
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list_for_each_entry(tmp, &smsg_list, list)
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if (tmp->callback == callback &&
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@ -130,55 +128,58 @@ smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
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list_del(&cb->list);
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break;
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}
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spin_unlock(&smsg_list_lock);
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spin_unlock_bh(&smsg_list_lock);
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kfree(cb);
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}
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static void __exit
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smsg_exit(void)
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static struct device_driver smsg_driver = {
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.name = "SMSGIUCV",
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.bus = &iucv_bus,
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};
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static void __exit smsg_exit(void)
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{
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if (smsg_handle > 0) {
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cpcmd("SET SMSG OFF", NULL, 0, NULL);
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iucv_sever(smsg_pathid, NULL);
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iucv_unregister_program(smsg_handle);
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driver_unregister(&smsg_driver);
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}
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return;
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cpcmd("SET SMSG IUCV", NULL, 0, NULL);
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iucv_unregister(&smsg_handler, 1);
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driver_unregister(&smsg_driver);
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}
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static int __init
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smsg_init(void)
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static int __init smsg_init(void)
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{
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static unsigned char pgmmask[24] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
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};
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int rc;
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rc = driver_register(&smsg_driver);
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if (rc != 0) {
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printk(KERN_ERR "SMSGIUCV: failed to register driver.\n");
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return rc;
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}
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smsg_handle = iucv_register_program("SMSGIUCV ", "*MSG ",
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pgmmask, &smsg_ops, NULL);
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if (!smsg_handle) {
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if (rc != 0)
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goto out;
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rc = iucv_register(&smsg_handler, 1);
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if (rc) {
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printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
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driver_unregister(&smsg_driver);
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return -EIO; /* better errno ? */
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rc = -EIO; /* better errno ? */
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goto out_driver;
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}
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rc = iucv_connect (&smsg_pathid, 255, NULL, "*MSG ", NULL, 0,
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NULL, NULL, smsg_handle, NULL);
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smsg_path = iucv_path_alloc(255, 0, GFP_KERNEL);
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if (!smsg_path) {
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rc = -ENOMEM;
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goto out_register;
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}
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rc = iucv_path_connect(smsg_path, &smsg_handler, "*MSG ",
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NULL, NULL, NULL);
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if (rc) {
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printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
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iucv_unregister_program(smsg_handle);
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driver_unregister(&smsg_driver);
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smsg_handle = NULL;
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return -EIO;
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rc = -EIO; /* better errno ? */
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goto out_free;
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}
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cpcmd("SET SMSG IUCV", NULL, 0, NULL);
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return 0;
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out_free:
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iucv_path_free(smsg_path);
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out_register:
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iucv_unregister(&smsg_handler, 1);
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out_driver:
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driver_unregister(&smsg_driver);
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out:
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return rc;
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}
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module_init(smsg_init);
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