/* 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); #endif /* IB_PACK_H */