[linux.git] / include / rdma / ib_pack.h

/*
 * 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_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,

	/* 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),

	/* 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_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 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (c) 2004 Topspin Corporation. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
1da177e4 LT	31	*/
	32
	33	#ifndef IB_PACK_H
	34	#define IB_PACK_H
	35
a4d61e84	36	#include <rdma/ib_verbs.h>
dd5f03be	37	#include <uapi/linux/if_ether.h>
1da177e4 LT	38
1da177e4 LT	39	enum {
99260132 PP	40	IB_LRH_BYTES = 8,
	41	IB_ETH_BYTES = 14,
	42	IB_VLAN_BYTES = 4,
	43	IB_GRH_BYTES = 40,
	44	IB_IP4_BYTES = 20,
	45	IB_UDP_BYTES = 8,
	46	IB_BTH_BYTES = 12,
	47	IB_DETH_BYTES = 8,
	48	IB_EXT_ATOMICETH_BYTES = 28,
	49	IB_EXT_XRC_BYTES = 4,
	50	IB_ICRC_BYTES = 4
1da177e4 LT	51	};
	52
	53	struct ib_field {
	54	size_t struct_offset_bytes;
	55	size_t struct_size_bytes;
	56	int offset_words;
	57	int offset_bits;
	58	int size_bits;
	59	char *field_name;
	60	};
	61
	62	#define RESERVED \
	63	.field_name = "reserved"
	64
	65	/*
	66	* This macro cleans up the definitions of constants for BTH opcodes.
	67	* It is used to define constants such as IB_OPCODE_UD_SEND_ONLY,
	68	* which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives
	69	* the correct value.
	70	*
	71	* In short, user code should use the constants defined using the
	72	* macro rather than worrying about adding together other constants.
	73	*/
	74	#define IB_OPCODE(transport, op) \
	75	IB_OPCODE_ ## transport ## _ ## op = \
	76	IB_OPCODE_ ## transport + IB_OPCODE_ ## op
	77
	78	enum {
	79	/* transport types -- just used to define real constants */
	80	IB_OPCODE_RC = 0x00,
	81	IB_OPCODE_UC = 0x20,
	82	IB_OPCODE_RD = 0x40,
	83	IB_OPCODE_UD = 0x60,
931cf9a3	84	/* per IBTA 1.3 vol 1 Table 38, A10.3.2 */
d4ab3470	85	IB_OPCODE_CNP = 0x80,
243d9f43 DH	86	/* Manufacturer specific */
243d9f43 DH	87	IB_OPCODE_MSP = 0xe0,
1da177e4 LT	88
	89	/* operations -- just used to define real constants */
	90	IB_OPCODE_SEND_FIRST = 0x00,
	91	IB_OPCODE_SEND_MIDDLE = 0x01,
	92	IB_OPCODE_SEND_LAST = 0x02,
	93	IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03,
	94	IB_OPCODE_SEND_ONLY = 0x04,
	95	IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05,
	96	IB_OPCODE_RDMA_WRITE_FIRST = 0x06,
	97	IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07,
	98	IB_OPCODE_RDMA_WRITE_LAST = 0x08,
	99	IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09,
	100	IB_OPCODE_RDMA_WRITE_ONLY = 0x0a,
	101	IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b,
	102	IB_OPCODE_RDMA_READ_REQUEST = 0x0c,
	103	IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d,
	104	IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e,
	105	IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f,
	106	IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10,
	107	IB_OPCODE_ACKNOWLEDGE = 0x11,
	108	IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12,
	109	IB_OPCODE_COMPARE_SWAP = 0x13,
	110	IB_OPCODE_FETCH_ADD = 0x14,
bf77cc34 JX	111	/* opcode 0x15 is reserved */
	112	IB_OPCODE_SEND_LAST_WITH_INVALIDATE = 0x16,
	113	IB_OPCODE_SEND_ONLY_WITH_INVALIDATE = 0x17,
1da177e4 LT	114
	115	/* real constants follow -- see comment about above IB_OPCODE()
	116	macro for more details */
	117
	118	/* RC */
	119	IB_OPCODE(RC, SEND_FIRST),
	120	IB_OPCODE(RC, SEND_MIDDLE),
	121	IB_OPCODE(RC, SEND_LAST),
	122	IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),
	123	IB_OPCODE(RC, SEND_ONLY),
	124	IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),
	125	IB_OPCODE(RC, RDMA_WRITE_FIRST),
	126	IB_OPCODE(RC, RDMA_WRITE_MIDDLE),
	127	IB_OPCODE(RC, RDMA_WRITE_LAST),
	128	IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
	129	IB_OPCODE(RC, RDMA_WRITE_ONLY),
	130	IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
	131	IB_OPCODE(RC, RDMA_READ_REQUEST),
	132	IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),
	133	IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),
	134	IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),
	135	IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),
	136	IB_OPCODE(RC, ACKNOWLEDGE),
	137	IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),
	138	IB_OPCODE(RC, COMPARE_SWAP),
	139	IB_OPCODE(RC, FETCH_ADD),
bf77cc34 JX	140	IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE),
bf77cc34 JX	141	IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE),
1da177e4 LT	142
	143	/* UC */
	144	IB_OPCODE(UC, SEND_FIRST),
	145	IB_OPCODE(UC, SEND_MIDDLE),
	146	IB_OPCODE(UC, SEND_LAST),
	147	IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),
	148	IB_OPCODE(UC, SEND_ONLY),
	149	IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),
	150	IB_OPCODE(UC, RDMA_WRITE_FIRST),
	151	IB_OPCODE(UC, RDMA_WRITE_MIDDLE),
	152	IB_OPCODE(UC, RDMA_WRITE_LAST),
	153	IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
	154	IB_OPCODE(UC, RDMA_WRITE_ONLY),
	155	IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
	156
	157	/* RD */
	158	IB_OPCODE(RD, SEND_FIRST),
	159	IB_OPCODE(RD, SEND_MIDDLE),
	160	IB_OPCODE(RD, SEND_LAST),
	161	IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),
	162	IB_OPCODE(RD, SEND_ONLY),
	163	IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),
	164	IB_OPCODE(RD, RDMA_WRITE_FIRST),
	165	IB_OPCODE(RD, RDMA_WRITE_MIDDLE),
	166	IB_OPCODE(RD, RDMA_WRITE_LAST),
	167	IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),
	168	IB_OPCODE(RD, RDMA_WRITE_ONLY),
	169	IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
	170	IB_OPCODE(RD, RDMA_READ_REQUEST),
	171	IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),
	172	IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),
	173	IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),
	174	IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),
	175	IB_OPCODE(RD, ACKNOWLEDGE),
	176	IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),
	177	IB_OPCODE(RD, COMPARE_SWAP),
	178	IB_OPCODE(RD, FETCH_ADD),
	179
	180	/* UD */
	181	IB_OPCODE(UD, SEND_ONLY),
	182	IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)
	183	};
	184
	185	enum {
	186	IB_LNH_RAW = 0,
	187	IB_LNH_IP = 1,
	188	IB_LNH_IBA_LOCAL = 2,
	189	IB_LNH_IBA_GLOBAL = 3
	190	};
	191
	192	struct ib_unpacked_lrh {
	193	u8 virtual_lane;
	194	u8 link_version;
	195	u8 service_level;
	196	u8 link_next_header;
	197	__be16 destination_lid;
	198	__be16 packet_length;
	199	__be16 source_lid;
	200	};
	201
	202	struct ib_unpacked_grh {
	203	u8 ip_version;
	204	u8 traffic_class;
	205	__be32 flow_label;
206	__be16 payload_length;
207	u8 next_header;
208	u8 hop_limit;
209	union ib_gid source_gid;
210	union ib_gid destination_gid;
211	};
212
213	struct ib_unpacked_bth {
214	u8 opcode;
215	u8 solicited_event;
216	u8 mig_req;
217	u8 pad_count;
218	u8 transport_header_version;
219	__be16 pkey;
220	__be32 destination_qpn;
221	u8 ack_req;
222	__be32 psn;
223	};
224
225	struct ib_unpacked_deth {
226	__be32 qkey;
227	__be32 source_qpn;
228	};
229
ff7f5aab EC	230	struct ib_unpacked_eth {
	231	u8 dmac_h[4];
	232	u8 dmac_l[2];
	233	u8 smac_h[2];
	234	u8 smac_l[4];
	235	__be16 type;
	236	};
	237
25f40220 MS	238	struct ib_unpacked_ip4 {
	239	u8 ver;
	240	u8 hdr_len;
	241	u8 tos;
	242	__be16 tot_len;
	243	__be16 id;
	244	__be16 frag_off;
	245	u8 ttl;
	246	u8 protocol;
3ef967a4	247	__sum16 check;
25f40220 MS	248	__be32 saddr;
	249	__be32 daddr;
	250	};
	251
	252	struct ib_unpacked_udp {
	253	__be16 sport;
	254	__be16 dport;
	255	__be16 length;
	256	__be16 csum;
	257	};
	258
af7bd463 EC	259	struct ib_unpacked_vlan {
	260	__be16 tag;
	261	__be16 type;
	262	};
	263
1da177e4	264	struct ib_ud_header {
ff7f5aab	265	int lrh_present;
1da177e4	266	struct ib_unpacked_lrh lrh;
ff7f5aab EC	267	int eth_present;
ff7f5aab EC	268	struct ib_unpacked_eth eth;
af7bd463 EC	269	int vlan_present;
af7bd463 EC	270	struct ib_unpacked_vlan vlan;
ff7f5aab EC	271	int grh_present;
ff7f5aab EC	272	struct ib_unpacked_grh grh;
25f40220 MS	273	int ipv4_present;
	274	struct ib_unpacked_ip4 ip4;
	275	int udp_present;
	276	struct ib_unpacked_udp udp;
ff7f5aab	277	struct ib_unpacked_bth bth;
1da177e4	278	struct ib_unpacked_deth deth;
ff7f5aab EC	279	int immediate_present;
ff7f5aab EC	280	__be32 immediate_data;
1da177e4 LT	281	};
	282
	283	void ib_pack(const struct ib_field *desc,
	284	int desc_len,
	285	void *structure,
	286	void *buf);
	287
	288	void ib_unpack(const struct ib_field *desc,
	289	int desc_len,
	290	void *buf,
	291	void *structure);
	292
3ef967a4	293	__sum16 ib_ud_ip4_csum(struct ib_ud_header *header);
25f40220 MS	294
	295	int ib_ud_header_init(int payload_bytes,
	296	int lrh_present,
	297	int eth_present,
	298	int vlan_present,
	299	int grh_present,
	300	int ip_version,
	301	int udp_present,
	302	int immediate_present,
	303	struct ib_ud_header *header);
1da177e4 LT	304
	305	int ib_ud_header_pack(struct ib_ud_header *header,
	306	void *buf);
	307
	308	int ib_ud_header_unpack(void *buf,
	309	struct ib_ud_header *header);
	310
	311	#endif /* IB_PACK_H */