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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2025, Stefan Metzmacher
*/
#include "internal.h"
#include <linux/module.h>
struct smbdirect_module_state smbdirect_globals = {
.mutex = __MUTEX_INITIALIZER(smbdirect_globals.mutex),
};
static __init int smbdirect_module_init(void)
{
int ret = -ENOMEM;
pr_notice("subsystem loading...\n");
mutex_lock(&smbdirect_globals.mutex);
smbdirect_globals.workqueues.accept = alloc_workqueue("smbdirect-accept",
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.accept == NULL)
goto alloc_accept_wq_failed;
smbdirect_globals.workqueues.connect = alloc_workqueue("smbdirect-connect",
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.connect == NULL)
goto alloc_connect_wq_failed;
smbdirect_globals.workqueues.idle = alloc_workqueue("smbdirect-idle",
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.idle == NULL)
goto alloc_idle_wq_failed;
smbdirect_globals.workqueues.refill = alloc_workqueue("smbdirect-refill",
WQ_HIGHPRI |
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.refill == NULL)
goto alloc_refill_wq_failed;
smbdirect_globals.workqueues.immediate = alloc_workqueue("smbdirect-immediate",
WQ_HIGHPRI |
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.immediate == NULL)
goto alloc_immediate_wq_failed;
smbdirect_globals.workqueues.cleanup = alloc_workqueue("smbdirect-cleanup",
WQ_MEM_RECLAIM |
WQ_HIGHPRI |
WQ_SYSFS |
WQ_PERCPU |
WQ_POWER_EFFICIENT,
0);
if (smbdirect_globals.workqueues.cleanup == NULL)
goto alloc_cleanup_wq_failed;
ret = smbdirect_devices_init();
if (ret)
goto devices_init_failed;
mutex_unlock(&smbdirect_globals.mutex);
pr_notice("subsystem loaded\n");
return 0;
devices_init_failed:
destroy_workqueue(smbdirect_globals.workqueues.cleanup);
alloc_cleanup_wq_failed:
destroy_workqueue(smbdirect_globals.workqueues.immediate);
alloc_immediate_wq_failed:
destroy_workqueue(smbdirect_globals.workqueues.refill);
alloc_refill_wq_failed:
destroy_workqueue(smbdirect_globals.workqueues.idle);
alloc_idle_wq_failed:
destroy_workqueue(smbdirect_globals.workqueues.connect);
alloc_connect_wq_failed:
destroy_workqueue(smbdirect_globals.workqueues.accept);
alloc_accept_wq_failed:
mutex_unlock(&smbdirect_globals.mutex);
pr_crit("failed to loaded: %d (%1pe)\n",
ret, SMBDIRECT_DEBUG_ERR_PTR(ret));
return ret;
}
static __exit void smbdirect_module_exit(void)
{
pr_notice("subsystem unloading...\n");
mutex_lock(&smbdirect_globals.mutex);
smbdirect_devices_exit();
destroy_workqueue(smbdirect_globals.workqueues.accept);
destroy_workqueue(smbdirect_globals.workqueues.connect);
destroy_workqueue(smbdirect_globals.workqueues.idle);
destroy_workqueue(smbdirect_globals.workqueues.refill);
destroy_workqueue(smbdirect_globals.workqueues.immediate);
destroy_workqueue(smbdirect_globals.workqueues.cleanup);
mutex_unlock(&smbdirect_globals.mutex);
pr_notice("subsystem unloaded\n");
}
module_init(smbdirect_module_init);
module_exit(smbdirect_module_exit);
MODULE_DESCRIPTION("smbdirect subsystem");
MODULE_LICENSE("GPL");
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