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/*-
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Author: Harti Brandt <harti@freebsd.org>
*
* 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.
*
* Customisation of the SSCFU code to ng_sscfu.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <sys/callout.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <machine/stdarg.h>
/*
* Allocate zeroed or non-zeroed memory of some size and cast it.
* Return NULL on failure.
*/
#ifndef SSCFU_DEBUG
#define MEMINIT() \
MALLOC_DECLARE(M_NG_SSCFU); \
DECL_SIGQ_GET
#define MEMZALLOC(PTR, CAST, SIZE) \
((PTR) = (CAST)malloc((SIZE), M_NG_SSCFU, M_NOWAIT | M_ZERO))
#define MEMFREE(PTR) \
free(PTR, M_NG_SSCFU)
#define SIG_ALLOC(PTR) \
MEMZALLOC(PTR, struct sscfu_sig *, sizeof(struct sscfu_sig))
#define SIG_FREE(PTR) \
MEMFREE(PTR)
#else
#define MEMINIT() \
MALLOC_DEFINE(M_NG_SSCFU_INS, "sscfu_ins", "SSCFU instances"); \
MALLOC_DEFINE(M_NG_SSCFU_SIG, "sscfu_sig", "SSCFU signals"); \
DECL_SIGQ_GET
#define MEMZALLOC(PTR, CAST, SIZE) \
((PTR) = (CAST)malloc((SIZE), M_NG_SSCFU_INS, M_NOWAIT | M_ZERO))
#define MEMFREE(PTR) \
FREE(PTR, M_NG_SSCFU_INS)
#define SIG_ALLOC(PTR) \
((PTR) = malloc(sizeof(struct sscfu_sig), \
M_NG_SSCFU_SIG, M_NOWAIT | M_ZERO))
#define SIG_FREE(PTR) \
FREE(PTR, M_NG_SSCFU_SIG)
#endif
/*
* Signal queues
*/
typedef TAILQ_ENTRY(sscfu_sig) sscfu_sigq_link_t;
typedef TAILQ_HEAD(sscfu_sigq, sscfu_sig) sscfu_sigq_head_t;
#define SIGQ_INIT(Q) TAILQ_INIT(Q)
#define SIGQ_APPEND(Q, S) TAILQ_INSERT_TAIL(Q, S, link)
#define SIGQ_GET(Q) ng_sscfu_sigq_get((Q))
#define DECL_SIGQ_GET \
static __inline struct sscfu_sig * \
ng_sscfu_sigq_get(struct sscfu_sigq *q) \
{ \
struct sscfu_sig *s; \
\
s = TAILQ_FIRST(q); \
if (s != NULL) \
TAILQ_REMOVE(q, s, link); \
return (s); \
}
#define SIGQ_CLEAR(Q) \
do { \
struct sscfu_sig *_s1, *_s2; \
\
_s1 = TAILQ_FIRST(Q); \
while (_s1 != NULL) { \
_s2 = TAILQ_NEXT(_s1, link); \
if (_s1->m) \
MBUF_FREE(_s1->m); \
SIG_FREE(_s1); \
_s1 = _s2; \
} \
TAILQ_INIT(Q); \
} while (0)
/*
* Message buffers
*/
#define MBUF_FREE(M) m_freem(M)
#ifdef SSCFU_DEBUG
#define ASSERT(S) KASSERT(S, (#S))
#else
#define ASSERT(S)
#endif
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