1d1d32c3dSAlex Richardson /*- 2d1d32c3dSAlex Richardson * SPDX-License-Identifier: BSD-2-Clause 3d1d32c3dSAlex Richardson * 4d1d32c3dSAlex Richardson * Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org> 5d1d32c3dSAlex Richardson * 6d1d32c3dSAlex Richardson * This software was developed by SRI International and the University of 7d1d32c3dSAlex Richardson * Cambridge Computer Laboratory (Department of Computer Science and 8d1d32c3dSAlex Richardson * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the 9d1d32c3dSAlex Richardson * DARPA SSITH research programme. 10d1d32c3dSAlex Richardson * 11d1d32c3dSAlex Richardson * This software was developed by SRI International and the University of 12d1d32c3dSAlex Richardson * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 13d1d32c3dSAlex Richardson * ("CTSRD"), as part of the DARPA CRASH research programme. 14d1d32c3dSAlex Richardson * 15*4e64fb9fSAlex Richardson * This work was supported by Innovate UK project 105694, "Digital Security by 16*4e64fb9fSAlex Richardson * Design (DSbD) Technology Platform Prototype". 17*4e64fb9fSAlex Richardson * 18d1d32c3dSAlex Richardson * Redistribution and use in source and binary forms, with or without 19d1d32c3dSAlex Richardson * modification, are permitted provided that the following conditions 20d1d32c3dSAlex Richardson * are met: 21d1d32c3dSAlex Richardson * 1. Redistributions of source code must retain the above copyright 22d1d32c3dSAlex Richardson * notice, this list of conditions and the following disclaimer. 23d1d32c3dSAlex Richardson * 2. Redistributions in binary form must reproduce the above copyright 24d1d32c3dSAlex Richardson * notice, this list of conditions and the following disclaimer in the 25d1d32c3dSAlex Richardson * documentation and/or other materials provided with the distribution. 26d1d32c3dSAlex Richardson * 27d1d32c3dSAlex Richardson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 28d1d32c3dSAlex Richardson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29d1d32c3dSAlex Richardson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30d1d32c3dSAlex Richardson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 31d1d32c3dSAlex Richardson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32d1d32c3dSAlex Richardson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33d1d32c3dSAlex Richardson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34d1d32c3dSAlex Richardson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35d1d32c3dSAlex Richardson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36d1d32c3dSAlex Richardson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37d1d32c3dSAlex Richardson * SUCH DAMAGE. 38d1d32c3dSAlex Richardson */ 39d1d32c3dSAlex Richardson #pragma once 40d1d32c3dSAlex Richardson 41d1d32c3dSAlex Richardson #include_next <sys/param.h> 42d1d32c3dSAlex Richardson 43d1d32c3dSAlex Richardson #ifndef BLKDEV_IOSIZE 44d1d32c3dSAlex Richardson #define BLKDEV_IOSIZE PAGE_SIZE /* default block device I/O size */ 45d1d32c3dSAlex Richardson #endif 46d1d32c3dSAlex Richardson #ifndef DFLTPHYS 47d1d32c3dSAlex Richardson #define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size */ 48d1d32c3dSAlex Richardson #endif 49d1d32c3dSAlex Richardson #ifndef MAXPHYS 50d1d32c3dSAlex Richardson #define MAXPHYS (128 * 1024) /* max raw I/O transfer size */ 51d1d32c3dSAlex Richardson #endif 52d1d32c3dSAlex Richardson #ifndef MAXDUMPPGS 53d1d32c3dSAlex Richardson #define MAXDUMPPGS (DFLTPHYS / PAGE_SIZE) 54d1d32c3dSAlex Richardson #endif 55d1d32c3dSAlex Richardson 56d1d32c3dSAlex Richardson #ifndef MCLSHIFT 57d1d32c3dSAlex Richardson #define MCLSHIFT 11 /* convert bytes to mbuf clusters */ 58d1d32c3dSAlex Richardson #endif 59d1d32c3dSAlex Richardson 60d1d32c3dSAlex Richardson #ifndef MCLBYTES 61d1d32c3dSAlex Richardson #define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */ 62d1d32c3dSAlex Richardson #endif 63d1d32c3dSAlex Richardson 64d1d32c3dSAlex Richardson #ifndef __PAST_END 65d1d32c3dSAlex Richardson #define __PAST_END(array, offset) (((__typeof__(*(array)) *)(array))[offset]) 66d1d32c3dSAlex Richardson #endif 67*4e64fb9fSAlex Richardson 68*4e64fb9fSAlex Richardson #ifndef nitems 69*4e64fb9fSAlex Richardson // https://stackoverflow.com/questions/1598773/is-there-a-standard-function-in-c-that-would-return-the-length-of-an-array/1598827#1598827 70*4e64fb9fSAlex Richardson #define nitems(x) \ 71*4e64fb9fSAlex Richardson ((sizeof(x) / sizeof(0 [x])) / ((size_t)(!(sizeof(x) % sizeof(0 [x]))))) 72*4e64fb9fSAlex Richardson #endif 73*4e64fb9fSAlex Richardson 74*4e64fb9fSAlex Richardson #ifndef rounddown 75*4e64fb9fSAlex Richardson #define rounddown(x, y) (((x) / (y)) * (y)) 76*4e64fb9fSAlex Richardson #endif 77*4e64fb9fSAlex Richardson #ifndef rounddown2 78*4e64fb9fSAlex Richardson #define rounddown2(x, y) ((x) & (~((y)-1))) /* if y is power of two */ 79*4e64fb9fSAlex Richardson #endif 80*4e64fb9fSAlex Richardson #ifndef roundup 81*4e64fb9fSAlex Richardson #define roundup(x, y) ((((x) + ((y)-1)) / (y)) * (y)) /* to any y */ 82*4e64fb9fSAlex Richardson #endif 83*4e64fb9fSAlex Richardson #ifndef roundup2 84*4e64fb9fSAlex Richardson #define roundup2(x, y) \ 85*4e64fb9fSAlex Richardson (((x) + ((y)-1)) & (~((y)-1))) /* if y is powers of two */ 86*4e64fb9fSAlex Richardson #endif 87*4e64fb9fSAlex Richardson #ifndef powerof2 88*4e64fb9fSAlex Richardson #define powerof2(x) ((((x)-1) & (x)) == 0) 89*4e64fb9fSAlex Richardson #endif 90