997b054cf1
so it is easier to buil the same code on linux (this generalizes the change in svn 267142) MFC after: 3 days
164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2013-2014 Vincenzo Maffione. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
|
|
#ifdef linux
|
|
#include "bsd_glue.h"
|
|
#else /* __FreeBSD__ */
|
|
#include <sys/param.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mbuf.h>
|
|
#endif /* __FreeBSD__ */
|
|
|
|
#include "netmap_mbq.h"
|
|
|
|
|
|
static inline void __mbq_init(struct mbq *q)
|
|
{
|
|
q->head = q->tail = NULL;
|
|
q->count = 0;
|
|
}
|
|
|
|
|
|
void mbq_safe_init(struct mbq *q)
|
|
{
|
|
mtx_init(&q->lock, "mbq", NULL, MTX_SPIN);
|
|
__mbq_init(q);
|
|
}
|
|
|
|
|
|
void mbq_init(struct mbq *q)
|
|
{
|
|
__mbq_init(q);
|
|
}
|
|
|
|
|
|
static inline void __mbq_enqueue(struct mbq *q, struct mbuf *m)
|
|
{
|
|
m->m_nextpkt = NULL;
|
|
if (q->tail) {
|
|
q->tail->m_nextpkt = m;
|
|
q->tail = m;
|
|
} else {
|
|
q->head = q->tail = m;
|
|
}
|
|
q->count++;
|
|
}
|
|
|
|
|
|
void mbq_safe_enqueue(struct mbq *q, struct mbuf *m)
|
|
{
|
|
mbq_lock(q);
|
|
__mbq_enqueue(q, m);
|
|
mbq_unlock(q);
|
|
}
|
|
|
|
|
|
void mbq_enqueue(struct mbq *q, struct mbuf *m)
|
|
{
|
|
__mbq_enqueue(q, m);
|
|
}
|
|
|
|
|
|
static inline struct mbuf *__mbq_dequeue(struct mbq *q)
|
|
{
|
|
struct mbuf *ret = NULL;
|
|
|
|
if (q->head) {
|
|
ret = q->head;
|
|
q->head = ret->m_nextpkt;
|
|
if (q->head == NULL) {
|
|
q->tail = NULL;
|
|
}
|
|
q->count--;
|
|
ret->m_nextpkt = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
struct mbuf *mbq_safe_dequeue(struct mbq *q)
|
|
{
|
|
struct mbuf *ret;
|
|
|
|
mbq_lock(q);
|
|
ret = __mbq_dequeue(q);
|
|
mbq_unlock(q);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
struct mbuf *mbq_dequeue(struct mbq *q)
|
|
{
|
|
return __mbq_dequeue(q);
|
|
}
|
|
|
|
|
|
/* XXX seems pointless to have a generic purge */
|
|
static void __mbq_purge(struct mbq *q, int safe)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
for (;;) {
|
|
m = safe ? mbq_safe_dequeue(q) : mbq_dequeue(q);
|
|
if (m) {
|
|
m_freem(m);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void mbq_purge(struct mbq *q)
|
|
{
|
|
__mbq_purge(q, 0);
|
|
}
|
|
|
|
|
|
void mbq_safe_purge(struct mbq *q)
|
|
{
|
|
__mbq_purge(q, 1);
|
|
}
|
|
|
|
|
|
void mbq_safe_destroy(struct mbq *q)
|
|
{
|
|
mtx_destroy(&q->lock);
|
|
}
|
|
|
|
|
|
void mbq_destroy(struct mbq *q)
|
|
{
|
|
}
|