1129473Spjd/*- 2142727Spjd * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3129473Spjd * All rights reserved. 4129473Spjd * 5129473Spjd * Redistribution and use in source and binary forms, with or without 6129473Spjd * modification, are permitted provided that the following conditions 7129473Spjd * are met: 8129473Spjd * 1. Redistributions of source code must retain the above copyright 9129473Spjd * notice, this list of conditions and the following disclaimer. 10129473Spjd * 2. Redistributions in binary form must reproduce the above copyright 11129473Spjd * notice, this list of conditions and the following disclaimer in the 12129473Spjd * documentation and/or other materials provided with the distribution. 13155174Spjd * 14129473Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15129473Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16129473Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17129473Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18129473Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19129473Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20129473Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21129473Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22129473Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23129473Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24129473Spjd * SUCH DAMAGE. 25129473Spjd * 26129473Spjd * $FreeBSD$ 27129473Spjd */ 28129473Spjd 29129473Spjd#ifndef _G_STRIPE_H_ 30129473Spjd#define _G_STRIPE_H_ 31129473Spjd 32129473Spjd#include <sys/endian.h> 33129473Spjd 34129473Spjd#define G_STRIPE_CLASS_NAME "STRIPE" 35129473Spjd 36129473Spjd#define G_STRIPE_MAGIC "GEOM::STRIPE" 37133373Spjd/* 38133373Spjd * Version history: 39133373Spjd * 0 - Initial version number. 40133373Spjd * 1 - Added 'stop' command for gstripe(8). 41133373Spjd * 2 - Added md_provider field to metadata and '-h' option for gstripe(8). 42142727Spjd * 3 - Added md_provsize field to metadata. 43133373Spjd */ 44142727Spjd#define G_STRIPE_VERSION 3 45129473Spjd 46129473Spjd#ifdef _KERNEL 47129473Spjd#define G_STRIPE_TYPE_MANUAL 0 48129473Spjd#define G_STRIPE_TYPE_AUTOMATIC 1 49129473Spjd 50129473Spjd#define G_STRIPE_DEBUG(lvl, ...) do { \ 51129473Spjd if (g_stripe_debug >= (lvl)) { \ 52129473Spjd printf("GEOM_STRIPE"); \ 53129473Spjd if (g_stripe_debug > 0) \ 54129473Spjd printf("[%u]", lvl); \ 55129473Spjd printf(": "); \ 56129473Spjd printf(__VA_ARGS__); \ 57129473Spjd printf("\n"); \ 58129473Spjd } \ 59129473Spjd} while (0) 60129473Spjd#define G_STRIPE_LOGREQ(bp, ...) do { \ 61129473Spjd if (g_stripe_debug >= 2) { \ 62129473Spjd printf("GEOM_STRIPE[2]: "); \ 63129473Spjd printf(__VA_ARGS__); \ 64129473Spjd printf(" "); \ 65129473Spjd g_print_bio(bp); \ 66129473Spjd printf("\n"); \ 67129473Spjd } \ 68129473Spjd} while (0) 69129473Spjd 70129473Spjdstruct g_stripe_softc { 71129473Spjd u_int sc_type; /* provider type */ 72129473Spjd struct g_geom *sc_geom; 73129473Spjd struct g_provider *sc_provider; 74129473Spjd uint32_t sc_id; /* stripe unique ID */ 75129473Spjd struct g_consumer **sc_disks; 76129473Spjd uint16_t sc_ndisks; 77129473Spjd uint32_t sc_stripesize; 78129473Spjd uint32_t sc_stripebits; 79256880Smav struct mtx sc_lock; 80129473Spjd}; 81132664Spjd#define sc_name sc_geom->name 82129473Spjd#endif /* _KERNEL */ 83129473Spjd 84129473Spjdstruct g_stripe_metadata { 85129473Spjd char md_magic[16]; /* Magic value. */ 86129473Spjd uint32_t md_version; /* Version number. */ 87132355Spjd char md_name[16]; /* Stripe name. */ 88129473Spjd uint32_t md_id; /* Unique ID. */ 89129473Spjd uint16_t md_no; /* Disk number. */ 90129473Spjd uint16_t md_all; /* Number of all disks. */ 91129473Spjd uint32_t md_stripesize; /* Stripe size. */ 92133373Spjd char md_provider[16]; /* Hardcoded provider. */ 93142727Spjd uint64_t md_provsize; /* Provider's size. */ 94129473Spjd}; 95129473Spjdstatic __inline void 96129473Spjdstripe_metadata_encode(const struct g_stripe_metadata *md, u_char *data) 97129473Spjd{ 98129473Spjd 99129473Spjd bcopy(md->md_magic, data, sizeof(md->md_magic)); 100129473Spjd le32enc(data + 16, md->md_version); 101129473Spjd bcopy(md->md_name, data + 20, sizeof(md->md_name)); 102129473Spjd le32enc(data + 36, md->md_id); 103129473Spjd le16enc(data + 40, md->md_no); 104129473Spjd le16enc(data + 42, md->md_all); 105129473Spjd le32enc(data + 44, md->md_stripesize); 106133373Spjd bcopy(md->md_provider, data + 48, sizeof(md->md_provider)); 107142727Spjd le64enc(data + 64, md->md_provsize); 108129473Spjd} 109129473Spjdstatic __inline void 110129473Spjdstripe_metadata_decode(const u_char *data, struct g_stripe_metadata *md) 111129473Spjd{ 112129473Spjd 113129473Spjd bcopy(data, md->md_magic, sizeof(md->md_magic)); 114129473Spjd md->md_version = le32dec(data + 16); 115129473Spjd bcopy(data + 20, md->md_name, sizeof(md->md_name)); 116129473Spjd md->md_id = le32dec(data + 36); 117129473Spjd md->md_no = le16dec(data + 40); 118129473Spjd md->md_all = le16dec(data + 42); 119129473Spjd md->md_stripesize = le32dec(data + 44); 120133373Spjd bcopy(data + 48, md->md_provider, sizeof(md->md_provider)); 121142727Spjd md->md_provsize = le64dec(data + 64); 122129473Spjd} 123129473Spjd 124129473Spjd#endif /* _G_STRIPE_H_ */ 125