d738f90fd7
- for sizeof(void *) == 8 arch, this is mandatory. MHLEN is too small already (less than 80) and there are chances for unwanted packet loss due to m_pullup restriction. - for other cases, the change should avoid allocating clusters in most cases (even when you have IPv4 IPsec tunnel, or IPv6 with moderate amount of extension header) portmasters: if your arch chokes with the change (high memory usage or whatever), please backout the change for your arch.
168 lines
5.1 KiB
C
168 lines
5.1 KiB
C
/* $NetBSD: param.h,v 1.2 2000/06/30 17:55:11 itojun Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* from: Utah $Hdr: machparam.h 1.11 89/08/14$
|
|
*
|
|
* @(#)param.h 7.8 (Berkeley) 6/28/91
|
|
*/
|
|
|
|
#ifndef _MACHINE_PARAM_H_
|
|
#define _MACHINE_PARAM_H_
|
|
|
|
#ifdef _KERNEL
|
|
#ifndef _LOCORE
|
|
#include <machine/cpu.h>
|
|
#endif /* _LOCORE */
|
|
#endif
|
|
|
|
/*
|
|
* Machine dependent constants for Amiga PowerPC (32-bit only currently)
|
|
*/
|
|
#define MACHINE "amigappc"
|
|
#define MACHINE_ARCH "powerpc"
|
|
#define MID_MACHINE MID_POWERPC
|
|
|
|
#define ALIGNBYTES (sizeof(double) - 1)
|
|
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
|
|
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
|
|
|
|
#define PGSHIFT 12
|
|
#define NBPG (1 << PGSHIFT) /* Page size */
|
|
#define PGOFSET (NBPG - 1)
|
|
|
|
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
|
|
#define DEV_BSIZE (1 << DEV_BSHIFT)
|
|
#define BLKDEV_IOSIZE NBPG
|
|
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
|
|
|
|
#define UPAGES 4
|
|
#define USPACE (UPAGES * NBPG)
|
|
|
|
#ifndef MSGBUFSIZE
|
|
#define MSGBUFSIZE NBPG /* default message buffer size */
|
|
#endif
|
|
|
|
#define KERNBASE 0x00000000 /* start of kernel virtual */
|
|
|
|
/*
|
|
* Constants related to network buffer management.
|
|
* MCLBYTES must be no larger than NBPG (the software page size), and,
|
|
* on machines that exchange pages of input or output buffers with mbuf
|
|
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
|
|
* of the hardware page size.
|
|
*/
|
|
#define MSIZE 256 /* size of an mbuf */
|
|
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
|
|
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
|
|
|
|
#ifndef NMBCLUSTERS
|
|
|
|
#if defined(_KERNEL) && !defined(_LKM)
|
|
#include "opt_gateway.h"
|
|
#endif /* _KERNEL && ! _LKM */
|
|
|
|
#ifdef GATEWAY
|
|
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
|
|
#else
|
|
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
|
|
* logical pages.
|
|
*/
|
|
#define NKMEMPAGES_MIN_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
|
|
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
|
|
|
|
/*
|
|
* pages ("clicks") to disk blocks
|
|
*/
|
|
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
|
|
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
|
|
/*
|
|
* bytes to pages
|
|
*/
|
|
#define ctob(x) ((x) << PGSHIFT)
|
|
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
|
|
|
|
/*
|
|
* bytes to disk blocks
|
|
*/
|
|
#define dbtob(x) ((x) << DEV_BSHIFT)
|
|
#define btodb(x) ((x) >> DEV_BSHIFT)
|
|
|
|
/*
|
|
* Segment handling stuff
|
|
*/
|
|
#define SEGMENT_LENGTH 0x10000000
|
|
#define SEGMENT_MASK 0xf0000000
|
|
|
|
/*
|
|
* Fixed segments
|
|
*/
|
|
#define USER_SR 13
|
|
#define KERNEL_SR 14
|
|
#define KERNEL_SEGMENT (0xf0000 + KERNEL_SR)
|
|
#define EMPTY_SEGMENT 0xfffff0
|
|
#define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT))
|
|
|
|
/*
|
|
* Some system constants
|
|
*/
|
|
#ifndef NPMAPS
|
|
#define NPMAPS 32768 /* Number of pmaps in system */
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* point to the custom.intenar and custom.intenaw respectively.
|
|
extern volatile unsigned short *amiga_intena_read, *amiga_intena_write;
|
|
*/
|
|
|
|
/* ADAM: redefiniton of cpu.h */
|
|
/*
|
|
#ifndef _LOCORE
|
|
void delay __P((int));
|
|
void DELAY __P((int));
|
|
#endif*/ /* !_LOCORE */
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* def _MACHINE_PARAM_H_ */
|