/* $OpenBSD: if_aoe.h,v 1.2 2010/08/21 06:50:42 blambert Exp $ */ /* * Copyright (c) 2007 Ted Unangst * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include /* for struct timeout */ struct aoe_packet { #define AOE_F_ERROR (1 << 2) #define AOE_F_RESP (1 << 3) #if BYTE_ORDER == LITTLE_ENDIAN unsigned char flags : 4; unsigned char vers : 4; #else unsigned char vers : 4; unsigned char flags : 4; #endif unsigned char error; unsigned short major; unsigned char minor; unsigned char command; unsigned int tag; union { /* command packet */ struct { #define AOE_AF_WRITE (1 << 0) #define AOE_AF_EXTENDED (1 << 6) unsigned char aflags; unsigned char feature; unsigned char sectorcnt; #define AOE_READ 0x20 #define AOE_READ_EXT 0x24 #define AOE_WRITE 0x30 #define AOE_WRITE_EXT 0x34 unsigned char cmd; unsigned char lba0; unsigned char lba1; unsigned char lba2; #define AOE_LBABIT 0x40 unsigned char lba3; unsigned char lba4; unsigned char lba5; unsigned short reserved; unsigned char data[]; } __packed; /* config packet */ struct { unsigned short buffercnt; unsigned short firmwarevers; unsigned char configsectorcnt; #if BYTE_ORDER == LITTLE_ENDIAN unsigned char ccmd : 4; unsigned char serververs : 4; #else unsigned char serververs : 4; unsigned char ccmd : 4; #endif unsigned short configstringlen; unsigned char configstring[1024]; } __packed; }; } __packed; #define AOE_BLK2HDR(blk, ap) do { \ ap->lba0 = blk; \ ap->lba1 = blk >> 8; \ ap->lba2 = blk >> 16; \ } while (0) #define AOE_HDR2BLK(ap, blk) do { \ blk = 0; \ blk |= ap->lba0; \ blk |= ap->lba1 << 8; \ blk |= ap->lba2 << 16; \ } while (0) #define AOE_CFGHDRLEN 32 #define AOE_CMDHDRLEN 36 struct aoe_req { void *v; int tag; int len; TAILQ_ENTRY(aoe_req) next; struct timeout to; }; struct aoe_handler { TAILQ_ENTRY(aoe_handler) next; unsigned short major; unsigned char minor; struct ifnet *ifp; workq_fn fn; struct workq_task task; TAILQ_HEAD(, aoe_req) reqs; }; extern TAILQ_HEAD(aoe_handler_head, aoe_handler) aoe_handlers; extern int aoe_waiting; void aoe_input(struct ifnet *, struct mbuf *);