| /* | |
| * 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 */ |