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ad02a0eb SH |
1 | /* |
2 | * brstate.c RTnetlink port state change | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Stephen Hemminger <shemminger@osdl.org> | |
10 | * | |
11 | * Modified by Srinivas Aji <Aji_Srinivas@emc.com> for use | |
12 | * in RSTP daemon. - 2006-09-01 | |
13 | */ | |
14 | ||
15 | #include <stdio.h> | |
16 | #include <stdlib.h> | |
17 | #include <unistd.h> | |
18 | #include <syslog.h> | |
19 | #include <fcntl.h> | |
20 | #include <sys/socket.h> | |
21 | #include <sys/time.h> | |
22 | #include <net/if.h> | |
23 | #include <netinet/in.h> | |
24 | #include <linux/if_bridge.h> | |
25 | #include <string.h> | |
26 | ||
27 | #include "libnetlink.h" | |
28 | ||
29 | #if 0 | |
30 | static const char *port_states[] = { | |
31 | [BR_STATE_DISABLED] = "disabled", | |
32 | [BR_STATE_LISTENING] = "listening", | |
33 | [BR_STATE_LEARNING] = "learning", | |
34 | [BR_STATE_FORWARDING] = "forwarding", | |
35 | [BR_STATE_BLOCKING] = "blocking", | |
36 | }; | |
37 | ||
38 | static int portstate(const char *name) | |
39 | { | |
40 | int i; | |
41 | ||
11904a35 SH |
42 | for (i = 0; i < sizeof(port_states) / sizeof(port_states[0]); i++) { |
43 | if (strcasecmp(name, port_states[i]) == 0) | |
ad02a0eb SH |
44 | return i; |
45 | } | |
46 | return -1; | |
47 | } | |
48 | #endif | |
49 | ||
50 | static int br_set_state(struct rtnl_handle *rth, unsigned ifindex, __u8 state) | |
51 | { | |
52 | struct { | |
11904a35 SH |
53 | struct nlmsghdr n; |
54 | struct ifinfomsg ifi; | |
55 | char buf[256]; | |
ad02a0eb SH |
56 | } req; |
57 | ||
58 | memset(&req, 0, sizeof(req)); | |
59 | ||
60 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
11904a35 | 61 | req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_REPLACE; |
ad02a0eb SH |
62 | req.n.nlmsg_type = RTM_SETLINK; |
63 | req.ifi.ifi_family = AF_BRIDGE; | |
64 | req.ifi.ifi_index = ifindex; | |
65 | ||
66 | addattr32(&req.n, sizeof(req.buf), IFLA_PROTINFO, state); | |
11904a35 | 67 | |
ad02a0eb SH |
68 | return rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL); |
69 | } | |
70 | ||
71 | static int br_send_bpdu(struct rtnl_handle *rth, unsigned ifindex, | |
11904a35 | 72 | const unsigned char *data, int len) |
ad02a0eb SH |
73 | { |
74 | struct { | |
11904a35 SH |
75 | struct nlmsghdr n; |
76 | struct ifinfomsg ifi; | |
77 | char buf[256]; | |
ad02a0eb SH |
78 | } req; |
79 | ||
80 | memset(&req, 0, sizeof(req)); | |
81 | ||
82 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
11904a35 | 83 | req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_REPLACE; |
ad02a0eb SH |
84 | req.n.nlmsg_type = RTM_SETLINK; |
85 | req.ifi.ifi_family = AF_BRIDGE; | |
86 | req.ifi.ifi_index = ifindex; | |
87 | ||
88 | addattr_l(&req.n, sizeof(req.buf), IFLA_PRIORITY, data, len); | |
11904a35 | 89 | |
ad02a0eb SH |
90 | return rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL); |
91 | } | |
92 | ||
93 | #if 0 | |
94 | int main(int argc, char **argv) | |
95 | { | |
96 | unsigned int ifindex; | |
97 | int err, brstate; | |
98 | struct rtnl_handle rth; | |
99 | ||
ad02a0eb | 100 | if (argc != 3) { |
11904a35 | 101 | fprintf(stderr, "Usage: brstate ifname state\n"); |
ad02a0eb SH |
102 | exit(-1); |
103 | } | |
104 | ||
105 | if (rtnl_open(&rth, 0) < 0) { | |
106 | fprintf(stderr, "brstate: can't setup netlink\n"); | |
107 | exit(1); | |
108 | } | |
109 | ||
110 | ifindex = if_nametoindex(argv[1]); | |
111 | if (ifindex == 0) { | |
112 | fprintf(stderr, "brstate: unknown interface '%s'\n", argv[1]); | |
113 | exit(1); | |
114 | } | |
11904a35 | 115 | |
ad02a0eb SH |
116 | brstate = portstate(argv[2]); |
117 | if (brstate < 0) { | |
11904a35 | 118 | fprintf(stderr, "brstate: unknown port state '%s'\n", argv[2]); |
ad02a0eb SH |
119 | exit(1); |
120 | } | |
121 | ||
122 | err = br_set_state(&rth, ifindex, brstate); | |
123 | if (err) { | |
124 | fprintf(stderr, "brstate: set %d, %d failed %d\n", | |
11904a35 | 125 | ifindex, brstate, err); |
ad02a0eb SH |
126 | exit(1); |
127 | } | |
128 | ||
129 | rtnl_close(&rth); | |
130 | return 0; | |
131 | } | |
132 | #endif | |
133 | ||
134 | #include "bridge_ctl.h" | |
135 | ||
136 | extern struct rtnl_handle rth_state; | |
137 | ||
138 | int bridge_set_state(int ifindex, int brstate) | |
139 | { | |
11904a35 SH |
140 | int err = br_set_state(&rth_state, ifindex, brstate); |
141 | if (err < 0) { | |
142 | fprintf(stderr, | |
143 | "Couldn't set bridge state, ifindex %d, state %d\n", | |
144 | ifindex, brstate); | |
145 | return -1; | |
146 | } | |
147 | return 0; | |
ad02a0eb SH |
148 | } |
149 | ||
150 | int bridge_send_bpdu(int ifindex, const unsigned char *data, int len) | |
151 | { | |
11904a35 SH |
152 | int err = br_send_bpdu(&rth_state, ifindex, data, len); |
153 | if (err < 0) { | |
154 | fprintf(stderr, "Couldn't send bpdu, ifindex %d\n", ifindex); | |
155 | return -1; | |
156 | } | |
157 | return 0; | |
ad02a0eb | 158 | } |