/* * Copyright (c) 2004 Topspin Corporation.  All rights reserved. * * This software is available to you under a choice of one of two * licenses.  You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * *     Redistribution and use in source and binary forms, with or *     without modification, are permitted provided that the following *     conditions are met: * *      - Redistributions of source code must retain the above *        copyright notice, this list of conditions and the following *        disclaimer. * *      - 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. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * $Id: ib_pack.h 1349 2004-12-16 21:09:43Z roland $ */ #ifndef IB_PACK_H#define IB_PACK_H #include <rdma/ib_verbs.h> enum {	IB_LRH_BYTES  = 8,	IB_GRH_BYTES  = 40,	IB_BTH_BYTES  = 12,	IB_DETH_BYTES = 8}; struct ib_field {	size_t struct_offset_bytes;	size_t struct_size_bytes;	int    offset_words;	int    offset_bits;	int    size_bits;	char  *field_name;}; #define RESERVED \	.field_name          = "reserved" /* * This macro cleans up the definitions of constants for BTH opcodes. * It is used to define constants such as IB_OPCODE_UD_SEND_ONLY, * which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives * the correct value. * * In short, user code should use the constants defined using the * macro rather than worrying about adding together other constants.*/#define IB_OPCODE(transport, op) \	IB_OPCODE_ ## transport ## _ ## op = \		IB_OPCODE_ ## transport + IB_OPCODE_ ## op enum {	/* transport types -- just used to define real constants */	IB_OPCODE_RC                                = 0x00,	IB_OPCODE_UC                                = 0x20,	IB_OPCODE_RD                                = 0x40,	IB_OPCODE_UD                                = 0x60, 	/* operations -- just used to define real constants */	IB_OPCODE_SEND_FIRST                        = 0x00,	IB_OPCODE_SEND_MIDDLE                       = 0x01,	IB_OPCODE_SEND_LAST                         = 0x02,	IB_OPCODE_SEND_LAST_WITH_IMMEDIATE          = 0x03,	IB_OPCODE_SEND_ONLY                         = 0x04,	IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE          = 0x05,	IB_OPCODE_RDMA_WRITE_FIRST                  = 0x06,	IB_OPCODE_RDMA_WRITE_MIDDLE                 = 0x07,	IB_OPCODE_RDMA_WRITE_LAST                   = 0x08,	IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE    = 0x09,	IB_OPCODE_RDMA_WRITE_ONLY                   = 0x0a,	IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE    = 0x0b,	IB_OPCODE_RDMA_READ_REQUEST                 = 0x0c,	IB_OPCODE_RDMA_READ_RESPONSE_FIRST          = 0x0d,	IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE         = 0x0e,	IB_OPCODE_RDMA_READ_RESPONSE_LAST           = 0x0f,	IB_OPCODE_RDMA_READ_RESPONSE_ONLY           = 0x10,	IB_OPCODE_ACKNOWLEDGE                       = 0x11,	IB_OPCODE_ATOMIC_ACKNOWLEDGE                = 0x12,	IB_OPCODE_COMPARE_SWAP                      = 0x13,	IB_OPCODE_FETCH_ADD                         = 0x14, 	/* real constants follow -- see comment about above IB_OPCODE()	   macro for more details */ 	/* RC */	IB_OPCODE(RC, SEND_FIRST),	IB_OPCODE(RC, SEND_MIDDLE),	IB_OPCODE(RC, SEND_LAST),	IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),	IB_OPCODE(RC, SEND_ONLY),	IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),	IB_OPCODE(RC, RDMA_WRITE_FIRST),	IB_OPCODE(RC, RDMA_WRITE_MIDDLE),	IB_OPCODE(RC, RDMA_WRITE_LAST),	IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),	IB_OPCODE(RC, RDMA_WRITE_ONLY),	IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),	IB_OPCODE(RC, RDMA_READ_REQUEST),	IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),	IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),	IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),	IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),	IB_OPCODE(RC, ACKNOWLEDGE),	IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),	IB_OPCODE(RC, COMPARE_SWAP),	IB_OPCODE(RC, FETCH_ADD), 	/* UC */	IB_OPCODE(UC, SEND_FIRST),	IB_OPCODE(UC, SEND_MIDDLE),	IB_OPCODE(UC, SEND_LAST),	IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),	IB_OPCODE(UC, SEND_ONLY),	IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),	IB_OPCODE(UC, RDMA_WRITE_FIRST),	IB_OPCODE(UC, RDMA_WRITE_MIDDLE),	IB_OPCODE(UC, RDMA_WRITE_LAST),	IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),	IB_OPCODE(UC, RDMA_WRITE_ONLY),	IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE), 	/* RD */	IB_OPCODE(RD, SEND_FIRST),	IB_OPCODE(RD, SEND_MIDDLE),	IB_OPCODE(RD, SEND_LAST),	IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),	IB_OPCODE(RD, SEND_ONLY),	IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),	IB_OPCODE(RD, RDMA_WRITE_FIRST),	IB_OPCODE(RD, RDMA_WRITE_MIDDLE),	IB_OPCODE(RD, RDMA_WRITE_LAST),	IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),	IB_OPCODE(RD, RDMA_WRITE_ONLY),	IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),	IB_OPCODE(RD, RDMA_READ_REQUEST),	IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),	IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),	IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),	IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),	IB_OPCODE(RD, ACKNOWLEDGE),	IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),	IB_OPCODE(RD, COMPARE_SWAP),	IB_OPCODE(RD, FETCH_ADD), 	/* UD */	IB_OPCODE(UD, SEND_ONLY),	IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)}; enum {	IB_LNH_RAW        = 0,	IB_LNH_IP         = 1,	IB_LNH_IBA_LOCAL  = 2,	IB_LNH_IBA_GLOBAL = 3}; struct ib_unpacked_lrh {	u8        virtual_lane;	u8        link_version;	u8        service_level;	u8        link_next_header;	__be16    destination_lid;	__be16    packet_length;	__be16    source_lid;}; struct ib_unpacked_grh {	u8    	     ip_version;	u8    	     traffic_class;	__be32 	     flow_label;	__be16       payload_length;	u8    	     next_header;	u8    	     hop_limit;	union ib_gid source_gid;	union ib_gid destination_gid;}; struct ib_unpacked_bth {	u8           opcode;	u8           solicited_event;	u8           mig_req;	u8           pad_count;	u8           transport_header_version;	__be16       pkey;	__be32       destination_qpn;	u8           ack_req;	__be32       psn;}; struct ib_unpacked_deth {	__be32       qkey;	__be32       source_qpn;}; struct ib_ud_header {	struct ib_unpacked_lrh  lrh;	int                     grh_present;	struct ib_unpacked_grh  grh;	struct ib_unpacked_bth  bth;	struct ib_unpacked_deth deth;	int            		immediate_present;	__be32         		immediate_data;}; void ib_pack(const struct ib_field        *desc,	     int                           desc_len,	     void                         *structure,	     void                         *buf); void ib_unpack(const struct ib_field        *desc,	       int                           desc_len,	       void                         *buf,	       void                         *structure); void ib_ud_header_init(int     		   payload_bytes,		       int    		   grh_present,		       struct ib_ud_header *header); int ib_ud_header_pack(struct ib_ud_header *header,		      void                *buf); int ib_ud_header_unpack(void                *buf,			struct ib_ud_header *header); #endif /* IB_PACK_H */