linux/drivers/net/ethernet/sfc/efx_common.c

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// SPDX-License-Identifier: GPL-2.0-only
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2018 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#include "net_driver.h"
#include <linux/module.h>
#include <linux/netdevice.h>
#include "efx_common.h"
#include "efx_channels.h"
#include "efx.h"
#include "mcdi.h"
#include "selftest.h"
#include "rx_common.h"
#include "tx_common.h"
#include "nic.h"
#include "io.h"
#include "mcdi_pcol.h"
/* Reset workqueue. If any NIC has a hardware failure then a reset will be
* queued onto this work queue. This is not a per-nic work queue, because
* efx_reset_work() acquires the rtnl lock, so resets are naturally serialised.
*/
static struct workqueue_struct *reset_workqueue;
int efx_create_reset_workqueue(void)
{
reset_workqueue = create_singlethread_workqueue("sfc_reset");
if (!reset_workqueue) {
printk(KERN_ERR "Failed to create reset workqueue\n");
return -ENOMEM;
}
return 0;
}
void efx_queue_reset_work(struct efx_nic *efx)
{
queue_work(reset_workqueue, &efx->reset_work);
}
void efx_flush_reset_workqueue(struct efx_nic *efx)
{
cancel_work_sync(&efx->reset_work);
}
void efx_destroy_reset_workqueue(void)
{
if (reset_workqueue) {
destroy_workqueue(reset_workqueue);
reset_workqueue = NULL;
}
}