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 #include <endian.h>
39 #include <byteswap.h>
40 
41 #include <infiniband/verbs.h>
42 
43 static const char *event_name_str(enum ibv_event_type event_type)
44 {
45 	switch (event_type) {
46 	case IBV_EVENT_DEVICE_FATAL:
47 		return "IBV_EVENT_DEVICE_FATAL";
48 	case IBV_EVENT_PORT_ACTIVE:
49 		return "IBV_EVENT_PORT_ACTIVE";
50 	case IBV_EVENT_PORT_ERR:
51 		return "IBV_EVENT_PORT_ERR";
52 	case IBV_EVENT_LID_CHANGE:
53 		return "IBV_EVENT_LID_CHANGE";
54 	case IBV_EVENT_PKEY_CHANGE:
55 		return "IBV_EVENT_PKEY_CHANGE";
56 	case IBV_EVENT_SM_CHANGE:
57 		return "IBV_EVENT_SM_CHANGE";
58 	case IBV_EVENT_CLIENT_REREGISTER:
59 		return "IBV_EVENT_CLIENT_REREGISTER";
60 	case IBV_EVENT_GID_CHANGE:
61 		return "IBV_EVENT_GID_CHANGE";
62 
63 	case IBV_EVENT_CQ_ERR:
64 	case IBV_EVENT_QP_FATAL:
65 	case IBV_EVENT_QP_REQ_ERR:
66 	case IBV_EVENT_QP_ACCESS_ERR:
67 	case IBV_EVENT_COMM_EST:
68 	case IBV_EVENT_SQ_DRAINED:
69 	case IBV_EVENT_PATH_MIG:
70 	case IBV_EVENT_PATH_MIG_ERR:
71 	case IBV_EVENT_SRQ_ERR:
72 	case IBV_EVENT_SRQ_LIMIT_REACHED:
73 	case IBV_EVENT_QP_LAST_WQE_REACHED:
74 	default:
75 		return "unexpected";
76 	}
77 }
78 
79 int main(int argc, char *argv[])
80 {
81 	struct ibv_device **dev_list;
82 	struct ibv_context *context;
83 	struct ibv_async_event event;
84 
85 	/* Force line-buffering in case stdout is redirected */
86 	setvbuf(stdout, NULL, _IOLBF, 0);
87 
88 	dev_list = ibv_get_device_list(NULL);
89 	if (!dev_list) {
90 		perror("Failed to get IB devices list");
91 		return 1;
92 	}
93 
94 	if (!*dev_list) {
95 		fprintf(stderr, "No IB devices found\n");
96 		return 1;
97 	}
98 
99 	context = ibv_open_device(*dev_list);
100 	if (!context) {
101 		fprintf(stderr, "Couldn't get context for %s\n",
102 			ibv_get_device_name(*dev_list));
103 		return 1;
104 	}
105 
106 	printf("%s: async event FD %d\n",
107 	       ibv_get_device_name(*dev_list), context->async_fd);
108 
109 	while (1) {
110 		if (ibv_get_async_event(context, &event))
111 			return 1;
112 
113 		printf("  event_type %s (%d), port %d\n",
114 		       event_name_str(event.event_type),
115 		       event.event_type, event.element.port_num);
116 
117 		ibv_ack_async_event(&event);
118 	}
119 
120 	return 0;
121 }
122