[deliverable/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
};

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,

	/* 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_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
	39	enum {
	40	IB_LRH_BYTES = 8,
ff7f5aab	41	IB_ETH_BYTES = 14,
af7bd463	42	IB_VLAN_BYTES = 4,
1da177e4	43	IB_GRH_BYTES = 40,
25f40220 MS	44	IB_IP4_BYTES = 20,
25f40220 MS	45	IB_UDP_BYTES = 8,
1da177e4 LT	46	IB_BTH_BYTES = 12,
	47	IB_DETH_BYTES = 8
	48	};
	49
	50	struct ib_field {
	51	size_t struct_offset_bytes;
	52	size_t struct_size_bytes;
	53	int offset_words;
	54	int offset_bits;
	55	int size_bits;
	56	char *field_name;
	57	};
	58
	59	#define RESERVED \
	60	.field_name = "reserved"
	61
	62	/*
	63	* This macro cleans up the definitions of constants for BTH opcodes.
	64	* It is used to define constants such as IB_OPCODE_UD_SEND_ONLY,
	65	* which becomes IB_OPCODE_UD + IB_OPCODE_SEND_ONLY, and this gives
	66	* the correct value.
	67	*
	68	* In short, user code should use the constants defined using the
	69	* macro rather than worrying about adding together other constants.
	70	*/
	71	#define IB_OPCODE(transport, op) \
	72	IB_OPCODE_ ## transport ## _ ## op = \
	73	IB_OPCODE_ ## transport + IB_OPCODE_ ## op
	74
	75	enum {
	76	/* transport types -- just used to define real constants */
	77	IB_OPCODE_RC = 0x00,
	78	IB_OPCODE_UC = 0x20,
	79	IB_OPCODE_RD = 0x40,
	80	IB_OPCODE_UD = 0x60,
931cf9a3	81	/* per IBTA 1.3 vol 1 Table 38, A10.3.2 */
d4ab3470	82	IB_OPCODE_CNP = 0x80,
1da177e4 LT	83
	84	/* operations -- just used to define real constants */
	85	IB_OPCODE_SEND_FIRST = 0x00,
	86	IB_OPCODE_SEND_MIDDLE = 0x01,
	87	IB_OPCODE_SEND_LAST = 0x02,
	88	IB_OPCODE_SEND_LAST_WITH_IMMEDIATE = 0x03,
	89	IB_OPCODE_SEND_ONLY = 0x04,
	90	IB_OPCODE_SEND_ONLY_WITH_IMMEDIATE = 0x05,
	91	IB_OPCODE_RDMA_WRITE_FIRST = 0x06,
	92	IB_OPCODE_RDMA_WRITE_MIDDLE = 0x07,
	93	IB_OPCODE_RDMA_WRITE_LAST = 0x08,
	94	IB_OPCODE_RDMA_WRITE_LAST_WITH_IMMEDIATE = 0x09,
	95	IB_OPCODE_RDMA_WRITE_ONLY = 0x0a,
	96	IB_OPCODE_RDMA_WRITE_ONLY_WITH_IMMEDIATE = 0x0b,
	97	IB_OPCODE_RDMA_READ_REQUEST = 0x0c,
	98	IB_OPCODE_RDMA_READ_RESPONSE_FIRST = 0x0d,
	99	IB_OPCODE_RDMA_READ_RESPONSE_MIDDLE = 0x0e,
	100	IB_OPCODE_RDMA_READ_RESPONSE_LAST = 0x0f,
	101	IB_OPCODE_RDMA_READ_RESPONSE_ONLY = 0x10,
	102	IB_OPCODE_ACKNOWLEDGE = 0x11,
	103	IB_OPCODE_ATOMIC_ACKNOWLEDGE = 0x12,
	104	IB_OPCODE_COMPARE_SWAP = 0x13,
	105	IB_OPCODE_FETCH_ADD = 0x14,
	106
	107	/* real constants follow -- see comment about above IB_OPCODE()
	108	macro for more details */
	109
	110	/* RC */
	111	IB_OPCODE(RC, SEND_FIRST),
	112	IB_OPCODE(RC, SEND_MIDDLE),
	113	IB_OPCODE(RC, SEND_LAST),
	114	IB_OPCODE(RC, SEND_LAST_WITH_IMMEDIATE),
	115	IB_OPCODE(RC, SEND_ONLY),
	116	IB_OPCODE(RC, SEND_ONLY_WITH_IMMEDIATE),
	117	IB_OPCODE(RC, RDMA_WRITE_FIRST),
	118	IB_OPCODE(RC, RDMA_WRITE_MIDDLE),
	119	IB_OPCODE(RC, RDMA_WRITE_LAST),
	120	IB_OPCODE(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
	121	IB_OPCODE(RC, RDMA_WRITE_ONLY),
	122	IB_OPCODE(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
	123	IB_OPCODE(RC, RDMA_READ_REQUEST),
	124	IB_OPCODE(RC, RDMA_READ_RESPONSE_FIRST),
	125	IB_OPCODE(RC, RDMA_READ_RESPONSE_MIDDLE),
	126	IB_OPCODE(RC, RDMA_READ_RESPONSE_LAST),
	127	IB_OPCODE(RC, RDMA_READ_RESPONSE_ONLY),
	128	IB_OPCODE(RC, ACKNOWLEDGE),
	129	IB_OPCODE(RC, ATOMIC_ACKNOWLEDGE),
	130	IB_OPCODE(RC, COMPARE_SWAP),
	131	IB_OPCODE(RC, FETCH_ADD),
	132
	133	/* UC */
	134	IB_OPCODE(UC, SEND_FIRST),
	135	IB_OPCODE(UC, SEND_MIDDLE),
	136	IB_OPCODE(UC, SEND_LAST),
	137	IB_OPCODE(UC, SEND_LAST_WITH_IMMEDIATE),
	138	IB_OPCODE(UC, SEND_ONLY),
	139	IB_OPCODE(UC, SEND_ONLY_WITH_IMMEDIATE),
	140	IB_OPCODE(UC, RDMA_WRITE_FIRST),
	141	IB_OPCODE(UC, RDMA_WRITE_MIDDLE),
	142	IB_OPCODE(UC, RDMA_WRITE_LAST),
	143	IB_OPCODE(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE),
	144	IB_OPCODE(UC, RDMA_WRITE_ONLY),
	145	IB_OPCODE(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
	146
147	/* RD */
148	IB_OPCODE(RD, SEND_FIRST),
149	IB_OPCODE(RD, SEND_MIDDLE),
150	IB_OPCODE(RD, SEND_LAST),
151	IB_OPCODE(RD, SEND_LAST_WITH_IMMEDIATE),
152	IB_OPCODE(RD, SEND_ONLY),
153	IB_OPCODE(RD, SEND_ONLY_WITH_IMMEDIATE),
154	IB_OPCODE(RD, RDMA_WRITE_FIRST),
155	IB_OPCODE(RD, RDMA_WRITE_MIDDLE),
156	IB_OPCODE(RD, RDMA_WRITE_LAST),
157	IB_OPCODE(RD, RDMA_WRITE_LAST_WITH_IMMEDIATE),
158	IB_OPCODE(RD, RDMA_WRITE_ONLY),
159	IB_OPCODE(RD, RDMA_WRITE_ONLY_WITH_IMMEDIATE),
160	IB_OPCODE(RD, RDMA_READ_REQUEST),
161	IB_OPCODE(RD, RDMA_READ_RESPONSE_FIRST),
162	IB_OPCODE(RD, RDMA_READ_RESPONSE_MIDDLE),
163	IB_OPCODE(RD, RDMA_READ_RESPONSE_LAST),
164	IB_OPCODE(RD, RDMA_READ_RESPONSE_ONLY),
165	IB_OPCODE(RD, ACKNOWLEDGE),
166	IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),
167	IB_OPCODE(RD, COMPARE_SWAP),
168	IB_OPCODE(RD, FETCH_ADD),
169
170	/* UD */
171	IB_OPCODE(UD, SEND_ONLY),
172	IB_OPCODE(UD, SEND_ONLY_WITH_IMMEDIATE)
173	};
174
175	enum {
176	IB_LNH_RAW = 0,
177	IB_LNH_IP = 1,
178	IB_LNH_IBA_LOCAL = 2,
179	IB_LNH_IBA_GLOBAL = 3
180	};
181
182	struct ib_unpacked_lrh {
183	u8 virtual_lane;
184	u8 link_version;
185	u8 service_level;
186	u8 link_next_header;
187	__be16 destination_lid;
188	__be16 packet_length;
189	__be16 source_lid;
190	};
191
192	struct ib_unpacked_grh {
193	u8 ip_version;
194	u8 traffic_class;
195	__be32 flow_label;
196	__be16 payload_length;
197	u8 next_header;
198	u8 hop_limit;
199	union ib_gid source_gid;
200	union ib_gid destination_gid;
201	};
202
203	struct ib_unpacked_bth {
204	u8 opcode;
205	u8 solicited_event;
206	u8 mig_req;
207	u8 pad_count;
208	u8 transport_header_version;
209	__be16 pkey;
210	__be32 destination_qpn;
211	u8 ack_req;
212	__be32 psn;
213	};
214
215	struct ib_unpacked_deth {
216	__be32 qkey;
217	__be32 source_qpn;
218	};
219
ff7f5aab EC	220	struct ib_unpacked_eth {
	221	u8 dmac_h[4];
	222	u8 dmac_l[2];
	223	u8 smac_h[2];
	224	u8 smac_l[4];
	225	__be16 type;
	226	};
	227
25f40220 MS	228	struct ib_unpacked_ip4 {
	229	u8 ver;
	230	u8 hdr_len;
	231	u8 tos;
	232	__be16 tot_len;
	233	__be16 id;
	234	__be16 frag_off;
	235	u8 ttl;
	236	u8 protocol;
3ef967a4	237	__sum16 check;
25f40220 MS	238	__be32 saddr;
	239	__be32 daddr;
	240	};
	241
	242	struct ib_unpacked_udp {
	243	__be16 sport;
	244	__be16 dport;
	245	__be16 length;
	246	__be16 csum;
	247	};
	248
af7bd463 EC	249	struct ib_unpacked_vlan {
	250	__be16 tag;
	251	__be16 type;
	252	};
	253
1da177e4	254	struct ib_ud_header {
ff7f5aab	255	int lrh_present;
1da177e4	256	struct ib_unpacked_lrh lrh;
ff7f5aab EC	257	int eth_present;
ff7f5aab EC	258	struct ib_unpacked_eth eth;
af7bd463 EC	259	int vlan_present;
af7bd463 EC	260	struct ib_unpacked_vlan vlan;
ff7f5aab EC	261	int grh_present;
ff7f5aab EC	262	struct ib_unpacked_grh grh;
25f40220 MS	263	int ipv4_present;
	264	struct ib_unpacked_ip4 ip4;
	265	int udp_present;
	266	struct ib_unpacked_udp udp;
ff7f5aab	267	struct ib_unpacked_bth bth;
1da177e4	268	struct ib_unpacked_deth deth;
ff7f5aab EC	269	int immediate_present;
ff7f5aab EC	270	__be32 immediate_data;
1da177e4 LT	271	};
	272
	273	void ib_pack(const struct ib_field *desc,
	274	int desc_len,
	275	void *structure,
	276	void *buf);
	277
	278	void ib_unpack(const struct ib_field *desc,
	279	int desc_len,
	280	void *buf,
	281	void *structure);
	282
3ef967a4	283	__sum16 ib_ud_ip4_csum(struct ib_ud_header *header);
25f40220 MS	284
	285	int ib_ud_header_init(int payload_bytes,
	286	int lrh_present,
	287	int eth_present,
	288	int vlan_present,
	289	int grh_present,
	290	int ip_version,
	291	int udp_present,
	292	int immediate_present,
	293	struct ib_ud_header *header);
1da177e4 LT	294
	295	int ib_ud_header_pack(struct ib_ud_header *header,
	296	void *buf);
	297
	298	int ib_ud_header_unpack(void *buf,
	299	struct ib_ud_header *header);
	300
	301	#endif /* IB_PACK_H */