asyncwatch.c revision 272407 
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
33#if HAVE_CONFIG_H
34#  include <config.h>
35#endif /* HAVE_CONFIG_H */
36
37#include <stdio.h>
38
39#include <infiniband/verbs.h>
40
41static const char *event_name_str(enum ibv_event_type event_type)
42{
43	switch (event_type) {
44	case IBV_EVENT_DEVICE_FATAL:
45		return "IBV_EVENT_DEVICE_FATAL";
46	case IBV_EVENT_PORT_ACTIVE:
47		return "IBV_EVENT_PORT_ACTIVE";
48	case IBV_EVENT_PORT_ERR:
49		return "IBV_EVENT_PORT_ERR";
50	case IBV_EVENT_LID_CHANGE:
51		return "IBV_EVENT_LID_CHANGE";
52	case IBV_EVENT_PKEY_CHANGE:
53		return "IBV_EVENT_PKEY_CHANGE";
54	case IBV_EVENT_SM_CHANGE:
55		return "IBV_EVENT_SM_CHANGE";
56	case IBV_EVENT_CLIENT_REREGISTER:
57		return "IBV_EVENT_CLIENT_REREGISTER";
58	case IBV_EVENT_GID_CHANGE:
59		return "IBV_EVENT_GID_CHANGE";
60
61	case IBV_EVENT_CQ_ERR:
62	case IBV_EVENT_QP_FATAL:
63	case IBV_EVENT_QP_REQ_ERR:
64	case IBV_EVENT_QP_ACCESS_ERR:
65	case IBV_EVENT_COMM_EST:
66	case IBV_EVENT_SQ_DRAINED:
67	case IBV_EVENT_PATH_MIG:
68	case IBV_EVENT_PATH_MIG_ERR:
69	case IBV_EVENT_SRQ_ERR:
70	case IBV_EVENT_SRQ_LIMIT_REACHED:
71	case IBV_EVENT_QP_LAST_WQE_REACHED:
72	default:
73		return "unexpected";
74	}
75}
76
77int main(int argc, char *argv[])
78{
79	struct ibv_device **dev_list;
80	struct ibv_context *context;
81	struct ibv_async_event event;
82
83	/* Force line-buffering in case stdout is redirected */
84	setvbuf(stdout, NULL, _IOLBF, 0);
85
86	dev_list = ibv_get_device_list(NULL);
87	if (!dev_list) {
88		perror("Failed to get IB devices list");
89		return 1;
90	}
91
92	if (!*dev_list) {
93		fprintf(stderr, "No IB devices found\n");
94		return 1;
95	}
96
97	context = ibv_open_device(*dev_list);
98	if (!context) {
99		fprintf(stderr, "Couldn't get context for %s\n",
100			ibv_get_device_name(*dev_list));
101		return 1;
102	}
103
104	printf("%s: async event FD %d\n",
105	       ibv_get_device_name(*dev_list), context->async_fd);
106
107	while (1) {
108		if (ibv_get_async_event(context, &event))
109			return 1;
110
111		printf("  event_type %s (%d), port %d\n",
112		       event_name_str(event.event_type),
113		       event.event_type, event.element.port_num);
114
115		ibv_ack_async_event(&event);
116	}
117
118	return 0;
119}
120