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87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* $NetBSD: shmifvar.h,v 1.10 2014/09/17 04:20:58 ozaki-r Exp $ */
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/*-
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* Copyright (c) 2009, 2010 Antti Kantee. All Rights Reserved.
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*
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* Development of this software was supported by The Nokia Foundation.
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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 ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* 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 OR
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* 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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#ifndef _RUMP_NET_SHMIFVAR_H_
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#define _RUMP_NET_SHMIFVAR_H_
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#define SHMIF_MAGIC 0xca11d054
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#define SHMIF_VERSION 3
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struct shmif_mem {
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uint32_t shm_magic;
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uint32_t shm_version;
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uint64_t shm_gen;
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uint32_t shm_first;
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uint32_t shm_last;
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uint32_t shm_lock;
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uint32_t shm_spare[1];
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uint8_t shm_data[0];
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};
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#define IFMEM_DATA (offsetof(struct shmif_mem, shm_data))
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#define IFMEM_WAKEUP (offsetof(struct shmif_mem, shm_version))
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struct shmif_pkthdr {
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uint32_t sp_len;
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uint32_t sp_sec;
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uint32_t sp_usec;
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uint64_t sp_sender;
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};
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#define BUSMEM_SIZE (1024*1024)
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#define BUSMEM_DATASIZE (BUSMEM_SIZE - sizeof(struct shmif_mem))
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#if 0
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#ifdef _KERNEL
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#include <rump/rumpuser.h>
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#define DPRINTF(x) rumpuser_dprintf x
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#else
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#include <stdio.h>
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#define DPRINTF(x) printf x
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#endif
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#else
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#define DPRINTF(x)
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#endif
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uint32_t shmif_advance(uint32_t, uint32_t);
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uint32_t shmif_busread(struct shmif_mem *,
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void *, uint32_t, size_t, bool *);
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void shmif_advancefirst(struct shmif_mem *, uint32_t, size_t);
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uint32_t shmif_buswrite(struct shmif_mem *, uint32_t,
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void *, size_t, bool *);
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uint32_t shmif_nextpktoff(struct shmif_mem *, uint32_t);
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#endif
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