asyncwatch.c revision 331769 
1/*
2 * Copyright (c) 2005 Topspin Communications.  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.
31 */
32#define _GNU_SOURCE
33#include <config.h>
34
35#include <stdio.h>
36#include <infiniband/endian.h>
37#include <getopt.h>
38#include <string.h>
39
40#include <infiniband/verbs.h>
41
42static const char *event_name_str(enum ibv_event_type event_type)
43{
44	switch (event_type) {
45	case IBV_EVENT_DEVICE_FATAL:
46		return "IBV_EVENT_DEVICE_FATAL";
47	case IBV_EVENT_PORT_ACTIVE:
48		return "IBV_EVENT_PORT_ACTIVE";
49	case IBV_EVENT_PORT_ERR:
50		return "IBV_EVENT_PORT_ERR";
51	case IBV_EVENT_LID_CHANGE:
52		return "IBV_EVENT_LID_CHANGE";
53	case IBV_EVENT_PKEY_CHANGE:
54		return "IBV_EVENT_PKEY_CHANGE";
55	case IBV_EVENT_SM_CHANGE:
56		return "IBV_EVENT_SM_CHANGE";
57	case IBV_EVENT_CLIENT_REREGISTER:
58		return "IBV_EVENT_CLIENT_REREGISTER";
59	case IBV_EVENT_GID_CHANGE:
60		return "IBV_EVENT_GID_CHANGE";
61
62	case IBV_EVENT_CQ_ERR:
63	case IBV_EVENT_QP_FATAL:
64	case IBV_EVENT_QP_REQ_ERR:
65	case IBV_EVENT_QP_ACCESS_ERR:
66	case IBV_EVENT_COMM_EST:
67	case IBV_EVENT_SQ_DRAINED:
68	case IBV_EVENT_PATH_MIG:
69	case IBV_EVENT_PATH_MIG_ERR:
70	case IBV_EVENT_SRQ_ERR:
71	case IBV_EVENT_SRQ_LIMIT_REACHED:
72	case IBV_EVENT_QP_LAST_WQE_REACHED:
73	default:
74		return "unexpected";
75	}
76}
77
78static void usage(const char *argv0)
79{
80	printf("Usage:\n");
81	printf("  %s            start an asyncwatch process\n", argv0);
82	printf("\n");
83	printf("Options:\n");
84	printf("  -d, --ib-dev=<dev>     use IB device <dev> (default first device found)\n");
85	printf("  -h, --help             print a help text and exit\n");
86}
87
88int main(int argc, char *argv[])
89{
90	struct ibv_device **dev_list;
91	struct ibv_context *context;
92	struct ibv_async_event event;
93	char   *ib_devname = NULL;
94	int i = 0;
95
96	/* Force line-buffering in case stdout is redirected */
97	setvbuf(stdout, NULL, _IOLBF, 0);
98
99	while (1) {
100		int ret = 1;
101		int c;
102		static struct option long_options[] = {
103			{ .name = "ib-dev",    .has_arg = 1, .val = 'd' },
104			{ .name = "help",      .has_arg = 0, .val = 'h' },
105			{}
106		};
107
108		c = getopt_long(argc, argv, "d:h", long_options, NULL);
109		if (c == -1)
110			break;
111		switch (c) {
112		case 'd':
113			ib_devname = strdupa(optarg);
114			break;
115		case 'h':
116			ret = 0;
117			SWITCH_FALLTHROUGH;
118		default:
119			usage(argv[0]);
120			return ret;
121		}
122	}
123	dev_list = ibv_get_device_list(NULL);
124	if (!dev_list) {
125		perror("Failed to get IB devices list");
126		return 1;
127	}
128	if (ib_devname) {
129		for (; dev_list[i]; ++i) {
130			if (!strcmp(ibv_get_device_name(dev_list[i]), ib_devname))
131				break;
132		}
133	}
134
135	if (!dev_list[i]) {
136		fprintf(stderr, "IB device %s not found\n",
137			ib_devname ? ib_devname : "");
138		return 1;
139	}
140
141	context = ibv_open_device(dev_list[i]);
142	if (!context) {
143		fprintf(stderr, "Couldn't get context for %s\n",
144			ibv_get_device_name(dev_list[i]));
145		return 1;
146	}
147
148	printf("%s: async event FD %d\n",
149	       ibv_get_device_name(dev_list[i]), context->async_fd);
150
151	while (1) {
152		if (ibv_get_async_event(context, &event))
153			return 1;
154
155		printf("  event_type %s (%d), port %d\n",
156		       event_name_str(event.event_type),
157		       event.event_type, event.element.port_num);
158
159		ibv_ack_async_event(&event);
160	}
161
162	return 0;
163}
164