FreeBSD/Linux Kernel Cross Reference
sys/netgraph/atm/sscfu/ng_sscfu_cust.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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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