nexmon – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 /*
2 * src/nl-monitor.c Monitor events
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/link.h>
14  
15 static void obj_input(struct nl_object *obj, void *arg)
16 {
17 struct nl_dump_params dp = {
18 .dp_type = NL_DUMP_STATS,
19 .dp_fd = stdout,
20 .dp_dump_msgtype = 1,
21 };
22  
23 nl_object_dump(obj, &dp);
24 }
25  
26 static int event_input(struct nl_msg *msg, void *arg)
27 {
28 if (nl_msg_parse(msg, &obj_input, NULL) < 0)
29 fprintf(stderr, "<<EVENT>> Unknown message type\n");
30  
31 /* Exit nl_recvmsgs_def() and return to the main select() */
32 return NL_STOP;
33 }
34  
35 int main(int argc, char *argv[])
36 {
37 struct nl_sock *sock;
38 struct nl_cache *link_cache;
39 int err = 1;
40 int i, idx;
41  
42 static const struct {
43 enum rtnetlink_groups gr_id;
44 const char* gr_name;
45 } known_groups[] = {
46 { RTNLGRP_LINK, "link" },
47 { RTNLGRP_NOTIFY, "notify" },
48 { RTNLGRP_NEIGH, "neigh" },
49 { RTNLGRP_TC, "tc" },
50 { RTNLGRP_IPV4_IFADDR, "ipv4-ifaddr" },
51 { RTNLGRP_IPV4_MROUTE, "ipv4-mroute" },
52 { RTNLGRP_IPV4_ROUTE, "ipv4-route" },
53 { RTNLGRP_IPV6_IFADDR, "ipv6-ifaddr" },
54 { RTNLGRP_IPV6_MROUTE, "ipv6-mroute" },
55 { RTNLGRP_IPV6_ROUTE, "ipv6-route" },
56 { RTNLGRP_IPV6_IFINFO, "ipv6-ifinfo" },
57 { RTNLGRP_DECnet_IFADDR, "decnet-ifaddr" },
58 { RTNLGRP_DECnet_ROUTE, "decnet-route" },
59 { RTNLGRP_IPV6_PREFIX, "ipv6-prefix" },
60 { RTNLGRP_NONE, NULL }
61 };
62  
63 sock = nl_cli_alloc_socket();
64 nl_socket_disable_seq_check(sock);
65 nl_socket_modify_cb(sock, NL_CB_VALID, NL_CB_CUSTOM, event_input, NULL);
66  
67 if (argc > 1 && !strcasecmp(argv[1], "-h")) {
68 printf("Usage: nl-monitor [<groups>]\n");
69  
70 printf("Known groups:");
71 for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++)
72 printf(" %s", known_groups[i].gr_name);
73 printf("\n");
74 return 2;
75 }
76  
77 nl_cli_connect(sock, NETLINK_ROUTE);
78  
79 for (idx = 1; argc > idx; idx++) {
80 for (i = 0; known_groups[i].gr_id != RTNLGRP_NONE; i++) {
81 if (!strcmp(argv[idx], known_groups[i].gr_name)) {
82  
83 if ((err = nl_socket_add_membership(sock, known_groups[i].gr_id)) < 0) {
84 nl_cli_fatal(err, "%s: %s\n", argv[idx],
85 nl_geterror(err));
86 }
87  
88 break;
89 }
90 }
91 if (known_groups[i].gr_id == RTNLGRP_NONE)
92 fprintf(stderr, "Warning: Unknown group: %s\n", argv[idx]);
93 }
94  
95 link_cache = nl_cli_link_alloc_cache(sock);
96  
97 while (1) {
98 fd_set rfds;
99 int fd, retval;
100  
101 fd = nl_socket_get_fd(sock);
102  
103 FD_ZERO(&rfds);
104 FD_SET(fd, &rfds);
105 /* wait for an incoming message on the netlink socket */
106 retval = select(fd+1, &rfds, NULL, NULL, NULL);
107  
108 if (retval) {
109 /* FD_ISSET(fd, &rfds) will be true */
110 nl_recvmsgs_default(sock);
111 }
112 }
113  
114 return 0;
115 }