ibverbs.h revision 331769 
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
3 * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses.  You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 *     Redistribution and use in source and binary forms, with or
12 *     without modification, are permitted provided that the following
13 *     conditions are met:
14 *
15 *      - Redistributions of source code must retain the above
16 *        copyright notice, this list of conditions and the following
17 *        disclaimer.
18 *
19 *      - Redistributions in binary form must reproduce the above
20 *        copyright notice, this list of conditions and the following
21 *        disclaimer in the documentation and/or other materials
22 *        provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#ifndef IB_VERBS_H
35#define IB_VERBS_H
36
37#include <pthread.h>
38
39#include <infiniband/driver.h>
40
41#define INIT		__attribute__((constructor))
42
43#define DEFAULT_ABI	"IBVERBS_1.1"
44
45#define symver(name, api, ver) asm(".symver " #name "," #api "@" #ver)
46#define default_symver(name, api)                                              \
47	asm(".symver " #name "," #api "@@" DEFAULT_ABI)
48#define private_symver(name, api)                                              \
49	asm(".symver " #name "," #api "@@IBVERBS_PRIVATE_14")
50
51#define PFX		"libibverbs: "
52
53struct ibv_abi_compat_v2 {
54	struct ibv_comp_channel	channel;
55	pthread_mutex_t		in_use;
56};
57
58extern int abi_ver;
59
60int ibverbs_init(struct ibv_device ***list);
61
62struct verbs_ex_private {
63	struct ibv_cq_ex *(*create_cq_ex)(struct ibv_context *context,
64					  struct ibv_cq_init_attr_ex *init_attr);
65};
66
67#define IBV_INIT_CMD(cmd, size, opcode)					\
68	do {								\
69		if (abi_ver > 2)					\
70			(cmd)->command = IB_USER_VERBS_CMD_##opcode;	\
71		else							\
72			(cmd)->command = IB_USER_VERBS_CMD_##opcode##_V2; \
73		(cmd)->in_words  = (size) / 4;				\
74		(cmd)->out_words = 0;					\
75	} while (0)
76
77#define IBV_INIT_CMD_RESP(cmd, size, opcode, out, outsize)		\
78	do {								\
79		if (abi_ver > 2)					\
80			(cmd)->command = IB_USER_VERBS_CMD_##opcode;	\
81		else							\
82			(cmd)->command = IB_USER_VERBS_CMD_##opcode##_V2; \
83		(cmd)->in_words  = (size) / 4;				\
84		(cmd)->out_words = (outsize) / 4;			\
85		(cmd)->response  = (uintptr_t) (out);			\
86	} while (0)
87
88#define IBV_INIT_CMD_RESP_EX_V(cmd, cmd_size, size, opcode, out, resp_size,\
89		outsize)						   \
90	do {                                                               \
91		size_t c_size = cmd_size - sizeof(struct ex_hdr);	   \
92		if (abi_ver > 2)					   \
93			(cmd)->hdr.command = IB_USER_VERBS_CMD_##opcode;   \
94		else							   \
95			(cmd)->hdr.command =				   \
96				IB_USER_VERBS_CMD_##opcode##_V2;	   \
97		(cmd)->hdr.in_words  = ((c_size) / 8);                     \
98		(cmd)->hdr.out_words = ((resp_size) / 8);                  \
99		(cmd)->hdr.provider_in_words   = (((size) - (cmd_size))/8);\
100		(cmd)->hdr.provider_out_words  =			   \
101			     (((outsize) - (resp_size)) / 8);              \
102		(cmd)->hdr.response  = (uintptr_t) (out);                  \
103		(cmd)->hdr.reserved = 0;				   \
104	} while (0)
105
106#define IBV_INIT_CMD_RESP_EX_VCMD(cmd, cmd_size, size, opcode, out, outsize) \
107	IBV_INIT_CMD_RESP_EX_V(cmd, cmd_size, size, opcode, out,	     \
108			sizeof(*(out)), outsize)
109
110#define IBV_INIT_CMD_RESP_EX(cmd, size, opcode, out, outsize)		     \
111	IBV_INIT_CMD_RESP_EX_V(cmd, sizeof(*(cmd)), size, opcode, out,    \
112			sizeof(*(out)), outsize)
113
114#define IBV_INIT_CMD_EX(cmd, size, opcode)				     \
115	IBV_INIT_CMD_RESP_EX_V(cmd, sizeof(*(cmd)), size, opcode, NULL, 0, 0)
116
117#endif /* IB_VERBS_H */
118