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- /*
- * 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.
- */
- #ifndef IB_PACK_H
- #define IB_PACK_H
- #include <rdma/ib_verbs.h>
- #include <uapi/linux/if_ether.h>
- enum {
- IB_LRH_BYTES = 8,
- IB_ETH_BYTES = 14,
- IB_VLAN_BYTES = 4,
- 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_unpacked_eth {
- u8 dmac_h[4];
- u8 dmac_l[2];
- u8 smac_h[2];
- u8 smac_l[4];
- __be16 type;
- };
- struct ib_unpacked_vlan {
- __be16 tag;
- __be16 type;
- };
- struct ib_ud_header {
- int lrh_present;
- struct ib_unpacked_lrh lrh;
- int eth_present;
- struct ib_unpacked_eth eth;
- int vlan_present;
- struct ib_unpacked_vlan vlan;
- 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 lrh_present,
- int eth_present,
- int vlan_present,
- int grh_present,
- int immediate_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 */
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