mirror of
https://github.com/freebsd/freebsd-src.git
synced 2026-11-03 06:40:36 +01:00
Eitan Adler
4ab2e064d7
This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re)
164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
/*
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* Copyright (C) 2013-2014 Vincenzo Maffione. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* $FreeBSD$
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*/
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#ifdef linux
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#include "bsd_glue.h"
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#else /* __FreeBSD__ */
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#endif /* __FreeBSD__ */
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#include "netmap_mbq.h"
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static inline void __mbq_init(struct mbq *q)
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{
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q->head = q->tail = NULL;
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q->count = 0;
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}
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void mbq_safe_init(struct mbq *q)
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{
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mtx_init(&q->lock, "mbq", NULL, MTX_SPIN);
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__mbq_init(q);
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}
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void mbq_init(struct mbq *q)
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{
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__mbq_init(q);
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}
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static inline void __mbq_enqueue(struct mbq *q, struct mbuf *m)
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{
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m->m_nextpkt = NULL;
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if (q->tail) {
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q->tail->m_nextpkt = m;
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q->tail = m;
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} else {
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q->head = q->tail = m;
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}
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q->count++;
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}
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void mbq_safe_enqueue(struct mbq *q, struct mbuf *m)
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{
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mbq_lock(q);
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__mbq_enqueue(q, m);
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mbq_unlock(q);
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}
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void mbq_enqueue(struct mbq *q, struct mbuf *m)
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{
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__mbq_enqueue(q, m);
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}
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static inline struct mbuf *__mbq_dequeue(struct mbq *q)
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{
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struct mbuf *ret = NULL;
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if (q->head) {
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ret = q->head;
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q->head = ret->m_nextpkt;
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if (q->head == NULL) {
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q->tail = NULL;
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}
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q->count--;
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ret->m_nextpkt = NULL;
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}
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return ret;
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}
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struct mbuf *mbq_safe_dequeue(struct mbq *q)
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{
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struct mbuf *ret;
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mbq_lock(q);
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ret = __mbq_dequeue(q);
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mbq_unlock(q);
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return ret;
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}
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struct mbuf *mbq_dequeue(struct mbq *q)
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{
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return __mbq_dequeue(q);
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}
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/* XXX seems pointless to have a generic purge */
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static void __mbq_purge(struct mbq *q, int safe)
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{
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struct mbuf *m;
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for (;;) {
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m = safe ? mbq_safe_dequeue(q) : mbq_dequeue(q);
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if (m) {
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m_freem(m);
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} else {
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break;
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}
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}
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}
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void mbq_purge(struct mbq *q)
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{
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__mbq_purge(q, 0);
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}
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void mbq_safe_purge(struct mbq *q)
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{
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__mbq_purge(q, 1);
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}
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void mbq_safe_destroy(struct mbq *q)
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{
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mtx_destroy(&q->lock);
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}
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void mbq_destroy(struct mbq *q)
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{
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}
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