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