290 lines
7.9 KiB
C
290 lines
7.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2004 Topspin Corporation. All rights reserved.
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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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#include <uapi/linux/if_ether.h>
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enum {
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IB_LRH_BYTES = 8,
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IB_ETH_BYTES = 14,
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IB_VLAN_BYTES = 4,
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IB_GRH_BYTES = 40,
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IB_IP4_BYTES = 20,
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IB_UDP_BYTES = 8,
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IB_BTH_BYTES = 12,
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IB_DETH_BYTES = 8,
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IB_EXT_ATOMICETH_BYTES = 28,
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IB_EXT_XRC_BYTES = 4,
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IB_ICRC_BYTES = 4
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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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/* per IBTA 1.3 vol 1 Table 38, A10.3.2 */
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IB_OPCODE_CNP = 0x80,
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/* Manufacturer specific */
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IB_OPCODE_MSP = 0xe0,
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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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/* opcode 0x15 is reserved */
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IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16,
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IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17,
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IB_OPCODE_FLUSH = 0x1C,
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IB_OPCODE_ATOMIC_WRITE = 0x1D,
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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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IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE),
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IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE),
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IB_OPCODE(RC, FLUSH),
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IB_OPCODE(RC, ATOMIC_WRITE),
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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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IB_OPCODE(RD, FLUSH),
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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_unpacked_eth {
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u8 dmac_h[4];
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u8 dmac_l[2];
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u8 smac_h[2];
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u8 smac_l[4];
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__be16 type;
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};
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struct ib_unpacked_ip4 {
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u8 ver;
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u8 hdr_len;
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u8 tos;
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__be16 tot_len;
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__be16 id;
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__be16 frag_off;
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u8 ttl;
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u8 protocol;
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__sum16 check;
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__be32 saddr;
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__be32 daddr;
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};
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struct ib_unpacked_udp {
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__be16 sport;
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__be16 dport;
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__be16 length;
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__be16 csum;
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};
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struct ib_unpacked_vlan {
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__be16 tag;
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__be16 type;
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};
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struct ib_ud_header {
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int lrh_present;
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struct ib_unpacked_lrh lrh;
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int eth_present;
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struct ib_unpacked_eth eth;
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int vlan_present;
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struct ib_unpacked_vlan vlan;
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int grh_present;
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struct ib_unpacked_grh grh;
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int ipv4_present;
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struct ib_unpacked_ip4 ip4;
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int udp_present;
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struct ib_unpacked_udp udp;
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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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__sum16 ib_ud_ip4_csum(struct ib_ud_header *header);
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int ib_ud_header_init(int payload_bytes,
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int lrh_present,
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int eth_present,
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int vlan_present,
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int grh_present,
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int ip_version,
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int udp_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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