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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include "queueing.h"
struct multicore_worker __percpu *
wg_packet_percpu_multicore_worker_alloc(work_func_t function, void *ptr)
{
int cpu;
struct multicore_worker __percpu *worker =
alloc_percpu(struct multicore_worker);
if (!worker)
return NULL;
for_each_possible_cpu(cpu) {
per_cpu_ptr(worker, cpu)->ptr = ptr;
INIT_WORK(&per_cpu_ptr(worker, cpu)->work, function);
}
return worker;
}
int wg_packet_queue_init(struct crypt_queue *queue, work_func_t function,
bool multicore, unsigned int len)
{
int ret;
memset(queue, 0, sizeof(*queue));
ret = ptr_ring_init(&queue->ring, len, GFP_KERNEL);
if (ret)
return ret;
if (function) {
if (multicore) {
queue->worker = wg_packet_percpu_multicore_worker_alloc(
function, queue);
if (!queue->worker) {
ptr_ring_cleanup(&queue->ring, NULL);
return -ENOMEM;
}
} else {
INIT_WORK(&queue->work, function);
}
}
return 0;
}
void wg_packet_queue_free(struct crypt_queue *queue, bool multicore)
{
if (multicore)
free_percpu(queue->worker);
WARN_ON(!__ptr_ring_empty(&queue->ring));
ptr_ring_cleanup(&queue->ring, NULL);
}
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