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usr
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src
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linux-headers-6.8.0-36
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include
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rdma
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ib_pack.h
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright (c) 2004 Topspin Corporation. All rights reserved. */ #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_IP4_BYTES = 20, IB_UDP_BYTES = 8, IB_BTH_BYTES = 12, IB_DETH_BYTES = 8, IB_EXT_ATOMICETH_BYTES = 28, IB_EXT_XRC_BYTES = 4, IB_ICRC_BYTES = 4 }; 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, /* per IBTA 1.3 vol 1 Table 38, A10.3.2 */ IB_OPCODE_CNP = 0x80, /* Manufacturer specific */ IB_OPCODE_MSP = 0xe0, /* 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, /* opcode 0x15 is reserved */ IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16, IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17, IB_OPCODE_FLUSH = 0x1C, IB_OPCODE_ATOMIC_WRITE = 0x1D, /* 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), IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE), IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE), IB_OPCODE(RC, FLUSH), IB_OPCODE(RC, ATOMIC_WRITE), /* 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), IB_OPCODE(RD, FLUSH), /* 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_ip4 { u8 ver; u8 hdr_len; u8 tos; __be16 tot_len; __be16 id; __be16 frag_off; u8 ttl; u8 protocol; __sum16 check; __be32 saddr; __be32 daddr; }; struct ib_unpacked_udp { __be16 sport; __be16 dport; __be16 length; __be16 csum; }; 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; int ipv4_present; struct ib_unpacked_ip4 ip4; int udp_present; struct ib_unpacked_udp udp; 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); __sum16 ib_ud_ip4_csum(struct ib_ud_header *header); int ib_ud_header_init(int payload_bytes, int lrh_present, int eth_present, int vlan_present, int grh_present, int ip_version, int udp_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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