// 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);}