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1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */2/*3 * Copyright (c) 2004 Topspin Corporation. All rights reserved.4 */5 6#ifndef IB_PACK_H7#define IB_PACK_H8 9#include <rdma/ib_verbs.h>10#include <uapi/linux/if_ether.h>11 12enum {13 IB_LRH_BYTES = 8,14 IB_ETH_BYTES = 14,15 IB_VLAN_BYTES = 4,16 IB_GRH_BYTES = 40,17 IB_IP4_BYTES = 20,18 IB_UDP_BYTES = 8,19 IB_BTH_BYTES = 12,20 IB_DETH_BYTES = 8,21 IB_EXT_ATOMICETH_BYTES = 28,22 IB_EXT_XRC_BYTES = 4,23 IB_ICRC_BYTES = 424};25 26struct ib_field {27 size_t struct_offset_bytes;28 size_t struct_size_bytes;29 int offset_words;30 int offset_bits;31 int size_bits;32 char *field_name;33};34 35#define RESERVED \36 .field_name = "reserved"37 38/*39 * This macro cleans up the definitions of constants for BTH opcodes.40 * It is used to define constants such as IB_OPCODE_UD_SEND_ONLY,41 * which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives42 * the correct value.43 *44 * In short, user code should use the constants defined using the45 * macro rather than worrying about adding together other constants.46*/47#define IB_OPCODE(transport, op) \48 IB_OPCODE_ ## transport ## _ ## op = \49 IB_OPCODE_ ## transport + IB_OPCODE_ ## op50 51enum {52 /* transport types -- just used to define real constants */53 IB_OPCODE_RC = 0x00,54 IB_OPCODE_UC = 0x20,55 IB_OPCODE_RD = 0x40,56 IB_OPCODE_UD = 0x60,57 /* per IBTA 1.3 vol 1 Table 38, A10.3.2 */58 IB_OPCODE_CNP = 0x80,59 /* Manufacturer specific */60 IB_OPCODE_MSP = 0xe0,61 62 /* operations -- just used to define real constants */63 IB_OPCODE_SEND_FIRST = 0x00,64 IB_OPCODE_SEND_MIDDLE = 0x01,65 IB_OPCODE_SEND_LAST = 0x02,66 IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03,67 IB_OPCODE_SEND_ONLY = 0x04,68 IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05,69 IB_OPCODE_RDMA_WRITE_FIRST = 0x06,70 IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07,71 IB_OPCODE_RDMA_WRITE_LAST = 0x08,72 IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09,73 IB_OPCODE_RDMA_WRITE_ONLY = 0x0a,74 IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b,75 IB_OPCODE_RDMA_READ_REQUEST = 0x0c,76 IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d,77 IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e,78 IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f,79 IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10,80 IB_OPCODE_ACKNOWLEDGE = 0x11,81 IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12,82 IB_OPCODE_COMPARE_SWAP = 0x13,83 IB_OPCODE_FETCH_ADD = 0x14,84 /* opcode 0x15 is reserved */85 IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16,86 IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17,87 IB_OPCODE_FLUSH = 0x1C,88 IB_OPCODE_ATOMIC_WRITE = 0x1D,89 90 /* real constants follow -- see comment about above IB_OPCODE()91 macro for more details */92 93 /* RC */94 IB_OPCODE(RC, SEND_FIRST),95 IB_OPCODE(RC, SEND_MIDDLE),96 IB_OPCODE(RC, SEND_LAST),97 IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),98 IB_OPCODE(RC, SEND_ONLY),99 IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),100 IB_OPCODE(RC, RDMA_WRITE_FIRST),101 IB_OPCODE(RC, RDMA_WRITE_MIDDLE),102 IB_OPCODE(RC, RDMA_WRITE_LAST),103 IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),104 IB_OPCODE(RC, RDMA_WRITE_ONLY),105 IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),106 IB_OPCODE(RC, RDMA_READ_REQUEST),107 IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),108 IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),109 IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),110 IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),111 IB_OPCODE(RC, ACKNOWLEDGE),112 IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),113 IB_OPCODE(RC, COMPARE_SWAP),114 IB_OPCODE(RC, FETCH_ADD),115 IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE),116 IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE),117 IB_OPCODE(RC, FLUSH),118 IB_OPCODE(RC, ATOMIC_WRITE),119 120 /* UC */121 IB_OPCODE(UC, SEND_FIRST),122 IB_OPCODE(UC, SEND_MIDDLE),123 IB_OPCODE(UC, SEND_LAST),124 IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),125 IB_OPCODE(UC, SEND_ONLY),126 IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),127 IB_OPCODE(UC, RDMA_WRITE_FIRST),128 IB_OPCODE(UC, RDMA_WRITE_MIDDLE),129 IB_OPCODE(UC, RDMA_WRITE_LAST),130 IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),131 IB_OPCODE(UC, RDMA_WRITE_ONLY),132 IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),133 134 /* RD */135 IB_OPCODE(RD, SEND_FIRST),136 IB_OPCODE(RD, SEND_MIDDLE),137 IB_OPCODE(RD, SEND_LAST),138 IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),139 IB_OPCODE(RD, SEND_ONLY),140 IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),141 IB_OPCODE(RD, RDMA_WRITE_FIRST),142 IB_OPCODE(RD, RDMA_WRITE_MIDDLE),143 IB_OPCODE(RD, RDMA_WRITE_LAST),144 IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),145 IB_OPCODE(RD, RDMA_WRITE_ONLY),146 IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),147 IB_OPCODE(RD, RDMA_READ_REQUEST),148 IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),149 IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),150 IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),151 IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),152 IB_OPCODE(RD, ACKNOWLEDGE),153 IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),154 IB_OPCODE(RD, COMPARE_SWAP),155 IB_OPCODE(RD, FETCH_ADD),156 IB_OPCODE(RD, FLUSH),157 158 /* UD */159 IB_OPCODE(UD, SEND_ONLY),160 IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)161};162 163enum {164 IB_LNH_RAW = 0,165 IB_LNH_IP = 1,166 IB_LNH_IBA_LOCAL = 2,167 IB_LNH_IBA_GLOBAL = 3168};169 170struct ib_unpacked_lrh {171 u8 virtual_lane;172 u8 link_version;173 u8 service_level;174 u8 link_next_header;175 __be16 destination_lid;176 __be16 packet_length;177 __be16 source_lid;178};179 180struct ib_unpacked_grh {181 u8 ip_version;182 u8 traffic_class;183 __be32 flow_label;184 __be16 payload_length;185 u8 next_header;186 u8 hop_limit;187 union ib_gid source_gid;188 union ib_gid destination_gid;189};190 191struct ib_unpacked_bth {192 u8 opcode;193 u8 solicited_event;194 u8 mig_req;195 u8 pad_count;196 u8 transport_header_version;197 __be16 pkey;198 __be32 destination_qpn;199 u8 ack_req;200 __be32 psn;201};202 203struct ib_unpacked_deth {204 __be32 qkey;205 __be32 source_qpn;206};207 208struct ib_unpacked_eth {209 u8 dmac_h[4];210 u8 dmac_l[2];211 u8 smac_h[2];212 u8 smac_l[4];213 __be16 type;214};215 216struct ib_unpacked_ip4 {217 u8 ver;218 u8 hdr_len;219 u8 tos;220 __be16 tot_len;221 __be16 id;222 __be16 frag_off;223 u8 ttl;224 u8 protocol;225 __sum16 check;226 __be32 saddr;227 __be32 daddr;228};229 230struct ib_unpacked_udp {231 __be16 sport;232 __be16 dport;233 __be16 length;234 __be16 csum;235};236 237struct ib_unpacked_vlan {238 __be16 tag;239 __be16 type;240};241 242struct ib_ud_header {243 int lrh_present;244 struct ib_unpacked_lrh lrh;245 int eth_present;246 struct ib_unpacked_eth eth;247 int vlan_present;248 struct ib_unpacked_vlan vlan;249 int grh_present;250 struct ib_unpacked_grh grh;251 int ipv4_present;252 struct ib_unpacked_ip4 ip4;253 int udp_present;254 struct ib_unpacked_udp udp;255 struct ib_unpacked_bth bth;256 struct ib_unpacked_deth deth;257 int immediate_present;258 __be32 immediate_data;259};260 261void ib_pack(const struct ib_field *desc,262 int desc_len,263 void *structure,264 void *buf);265 266void ib_unpack(const struct ib_field *desc,267 int desc_len,268 void *buf,269 void *structure);270 271__sum16 ib_ud_ip4_csum(struct ib_ud_header *header);272 273int ib_ud_header_init(int payload_bytes,274 int lrh_present,275 int eth_present,276 int vlan_present,277 int grh_present,278 int ip_version,279 int udp_present,280 int immediate_present,281 struct ib_ud_header *header);282 283int ib_ud_header_pack(struct ib_ud_header *header,284 void *buf);285 286int ib_ud_header_unpack(void *buf,287 struct ib_ud_header *header);288 289#endif /* IB_PACK_H */290