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9eff0e5c VY |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <unistd.h> | |
4 | #include <fcntl.h> | |
5 | #include <sys/socket.h> | |
6 | #include <net/if.h> | |
7 | #include <netinet/in.h> | |
8 | #include <linux/if_bridge.h> | |
9 | #include <linux/if_ether.h> | |
10 | #include <string.h> | |
11 | ||
12 | #include "libnetlink.h" | |
13 | #include "br_common.h" | |
14 | #include "utils.h" | |
15 | ||
9dca899b | 16 | static unsigned int filter_index; |
9eff0e5c VY |
17 | |
18 | static void usage(void) | |
19 | { | |
20 | fprintf(stderr, "Usage: bridge vlan { add | del } vid VLAN_ID dev DEV [ pvid] [ untagged ]\n"); | |
21 | fprintf(stderr, " [ self ] [ master ]\n"); | |
22 | fprintf(stderr, " bridge vlan { show } [ dev DEV ]\n"); | |
23 | exit(-1); | |
24 | } | |
25 | ||
26 | static int vlan_modify(int cmd, int argc, char **argv) | |
27 | { | |
28 | struct { | |
df4b043f SH |
29 | struct nlmsghdr n; |
30 | struct ifinfomsg ifm; | |
31 | char buf[1024]; | |
9eff0e5c VY |
32 | } req; |
33 | char *d = NULL; | |
34 | short vid = -1; | |
3ac0d36d | 35 | short vid_end = -1; |
9eff0e5c VY |
36 | struct rtattr *afspec; |
37 | struct bridge_vlan_info vinfo; | |
38 | unsigned short flags = 0; | |
39 | ||
40 | memset(&vinfo, 0, sizeof(vinfo)); | |
41 | memset(&req, 0, sizeof(req)); | |
42 | ||
43 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
44 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
45 | req.n.nlmsg_type = cmd; | |
46 | req.ifm.ifi_family = PF_BRIDGE; | |
47 | ||
48 | while (argc > 0) { | |
49 | if (strcmp(*argv, "dev") == 0) { | |
50 | NEXT_ARG(); | |
51 | d = *argv; | |
52 | } else if (strcmp(*argv, "vid") == 0) { | |
3ac0d36d | 53 | char *p; |
df4b043f | 54 | |
9eff0e5c | 55 | NEXT_ARG(); |
3ac0d36d RP |
56 | p = strchr(*argv, '-'); |
57 | if (p) { | |
58 | *p = '\0'; | |
59 | p++; | |
60 | vid = atoi(*argv); | |
61 | vid_end = atoi(p); | |
62 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
63 | } else { | |
64 | vid = atoi(*argv); | |
65 | } | |
9eff0e5c VY |
66 | } else if (strcmp(*argv, "self") == 0) { |
67 | flags |= BRIDGE_FLAGS_SELF; | |
68 | } else if (strcmp(*argv, "master") == 0) { | |
69 | flags |= BRIDGE_FLAGS_MASTER; | |
70 | } else if (strcmp(*argv, "pvid") == 0) { | |
71 | vinfo.flags |= BRIDGE_VLAN_INFO_PVID; | |
72 | } else if (strcmp(*argv, "untagged") == 0) { | |
73 | vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED; | |
74 | } else { | |
75 | if (matches(*argv, "help") == 0) { | |
76 | NEXT_ARG(); | |
77 | } | |
78 | } | |
79 | argc--; argv++; | |
80 | } | |
81 | ||
82 | if (d == NULL || vid == -1) { | |
83 | fprintf(stderr, "Device and VLAN ID are required arguments.\n"); | |
42ecedd4 | 84 | return -1; |
9eff0e5c VY |
85 | } |
86 | ||
87 | req.ifm.ifi_index = ll_name_to_index(d); | |
88 | if (req.ifm.ifi_index == 0) { | |
89 | fprintf(stderr, "Cannot find bridge device \"%s\"\n", d); | |
90 | return -1; | |
91 | } | |
92 | ||
93 | if (vid >= 4096) { | |
94 | fprintf(stderr, "Invalid VLAN ID \"%hu\"\n", vid); | |
95 | return -1; | |
96 | } | |
97 | ||
3ac0d36d RP |
98 | if (vinfo.flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
99 | if (vid_end == -1 || vid_end >= 4096 || vid >= vid_end) { | |
100 | fprintf(stderr, "Invalid VLAN range \"%hu-%hu\"\n", | |
101 | vid, vid_end); | |
102 | return -1; | |
103 | } | |
104 | if (vinfo.flags & BRIDGE_VLAN_INFO_PVID) { | |
105 | fprintf(stderr, | |
106 | "pvid cannot be configured for a vlan range\n"); | |
107 | return -1; | |
108 | } | |
109 | } | |
9eff0e5c VY |
110 | |
111 | afspec = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC); | |
112 | ||
113 | if (flags) | |
114 | addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags); | |
115 | ||
3ac0d36d RP |
116 | vinfo.vid = vid; |
117 | if (vid_end != -1) { | |
118 | /* send vlan range start */ | |
119 | addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo, | |
120 | sizeof(vinfo)); | |
121 | vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; | |
122 | ||
123 | /* Now send the vlan range end */ | |
124 | vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; | |
125 | vinfo.vid = vid_end; | |
126 | addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo, | |
127 | sizeof(vinfo)); | |
128 | } else { | |
129 | addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo, | |
130 | sizeof(vinfo)); | |
131 | } | |
9eff0e5c VY |
132 | |
133 | addattr_nest_end(&req.n, afspec); | |
134 | ||
c079e121 | 135 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
42ecedd4 | 136 | return -1; |
9eff0e5c VY |
137 | |
138 | return 0; | |
139 | } | |
140 | ||
141 | static int print_vlan(const struct sockaddr_nl *who, | |
142 | struct nlmsghdr *n, | |
143 | void *arg) | |
144 | { | |
145 | FILE *fp = arg; | |
146 | struct ifinfomsg *ifm = NLMSG_DATA(n); | |
147 | int len = n->nlmsg_len; | |
df4b043f | 148 | struct rtattr *tb[IFLA_MAX+1]; |
9eff0e5c VY |
149 | |
150 | if (n->nlmsg_type != RTM_NEWLINK) { | |
151 | fprintf(stderr, "Not RTM_NEWLINK: %08x %08x %08x\n", | |
152 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
153 | return 0; | |
154 | } | |
155 | ||
156 | len -= NLMSG_LENGTH(sizeof(*ifm)); | |
157 | if (len < 0) { | |
158 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); | |
159 | return -1; | |
160 | } | |
161 | ||
162 | if (ifm->ifi_family != AF_BRIDGE) | |
163 | return 0; | |
164 | ||
165 | if (filter_index && filter_index != ifm->ifi_index) | |
166 | return 0; | |
167 | ||
168 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifm), len); | |
169 | ||
170 | /* if AF_SPEC isn't there, vlan table is not preset for this port */ | |
171 | if (!tb[IFLA_AF_SPEC]) { | |
172 | fprintf(fp, "%s\tNone\n", ll_index_to_name(ifm->ifi_index)); | |
173 | return 0; | |
174 | } else { | |
175 | struct rtattr *i, *list = tb[IFLA_AF_SPEC]; | |
176 | int rem = RTA_PAYLOAD(list); | |
177 | ||
178 | fprintf(fp, "%s", ll_index_to_name(ifm->ifi_index)); | |
179 | for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { | |
180 | struct bridge_vlan_info *vinfo; | |
181 | ||
182 | if (i->rta_type != IFLA_BRIDGE_VLAN_INFO) | |
183 | continue; | |
184 | ||
185 | vinfo = RTA_DATA(i); | |
a2f7934d RP |
186 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END) |
187 | fprintf(fp, "-%hu", vinfo->vid); | |
188 | else | |
189 | fprintf(fp, "\t %hu", vinfo->vid); | |
190 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) | |
191 | continue; | |
9eff0e5c VY |
192 | if (vinfo->flags & BRIDGE_VLAN_INFO_PVID) |
193 | fprintf(fp, " PVID"); | |
194 | if (vinfo->flags & BRIDGE_VLAN_INFO_UNTAGGED) | |
195 | fprintf(fp, " Egress Untagged"); | |
196 | fprintf(fp, "\n"); | |
197 | } | |
198 | } | |
199 | fprintf(fp, "\n"); | |
200 | fflush(fp); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | static int vlan_show(int argc, char **argv) | |
205 | { | |
206 | char *filter_dev = NULL; | |
207 | ||
208 | while (argc > 0) { | |
209 | if (strcmp(*argv, "dev") == 0) { | |
210 | NEXT_ARG(); | |
211 | if (filter_dev) | |
212 | duparg("dev", *argv); | |
213 | filter_dev = *argv; | |
214 | } | |
215 | argc--; argv++; | |
216 | } | |
217 | ||
218 | if (filter_dev) { | |
219 | if ((filter_index = if_nametoindex(filter_dev)) == 0) { | |
220 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
221 | filter_dev); | |
222 | return -1; | |
223 | } | |
224 | } | |
225 | ||
226 | if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK, | |
a2f7934d RP |
227 | (compress_vlans ? |
228 | RTEXT_FILTER_BRVLAN_COMPRESSED : | |
229 | RTEXT_FILTER_BRVLAN)) < 0) { | |
9eff0e5c VY |
230 | perror("Cannont send dump request"); |
231 | exit(1); | |
232 | } | |
233 | ||
234 | printf("port\tvlan ids\n"); | |
235 | if (rtnl_dump_filter(&rth, print_vlan, stdout) < 0) { | |
236 | fprintf(stderr, "Dump ternminated\n"); | |
237 | exit(1); | |
238 | } | |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
243 | ||
244 | int do_vlan(int argc, char **argv) | |
245 | { | |
246 | ll_init_map(&rth); | |
247 | ||
248 | if (argc > 0) { | |
249 | if (matches(*argv, "add") == 0) | |
250 | return vlan_modify(RTM_SETLINK, argc-1, argv+1); | |
251 | if (matches(*argv, "delete") == 0) | |
252 | return vlan_modify(RTM_DELLINK, argc-1, argv+1); | |
253 | if (matches(*argv, "show") == 0 || | |
254 | matches(*argv, "lst") == 0 || | |
255 | matches(*argv, "list") == 0) | |
256 | return vlan_show(argc-1, argv+1); | |
257 | if (matches(*argv, "help") == 0) | |
258 | usage(); | |
259 | } else | |
260 | return vlan_show(0, NULL); | |
261 | ||
262 | fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv); | |
263 | exit(-1); | |
264 | } |