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Commit | Line | Data |
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2ef1be68 | 1 | #include <net/if.h> |
45c7212c | 2 | #include <errno.h> |
d5ac8ad3 | 3 | #include <string.h> |
d17fe27e | 4 | #include <stdbool.h> |
2ef1be68 | 5 | |
45c7212c JB |
6 | #include <netlink/genl/genl.h> |
7 | #include <netlink/genl/family.h> | |
8 | #include <netlink/genl/ctrl.h> | |
9 | #include <netlink/msg.h> | |
10 | #include <netlink/attr.h> | |
45c7212c | 11 | |
f408e01b | 12 | #include "nl80211.h" |
45c7212c JB |
13 | #include "iw.h" |
14 | ||
1ae3d621 JB |
15 | #define VALID_FLAGS "none: no special flags\n"\ |
16 | "fcsfail: show frames with FCS errors\n"\ | |
17 | "control: show control frames\n"\ | |
18 | "otherbss: show frames from other BSSes\n"\ | |
19 | "cook: use cooked mode" | |
20 | ||
4698bfc2 JB |
21 | SECTION(interface); |
22 | ||
cd293761 | 23 | static char *mntr_flags[NL80211_MNTR_FLAG_MAX + 1] = { |
dd65496b | 24 | "none", |
cd293761 JB |
25 | "fcsfail", |
26 | "plcpfail", | |
27 | "control", | |
28 | "otherbss", | |
29 | "cook", | |
30 | }; | |
31 | ||
dd65496b JB |
32 | static int parse_mntr_flags(int *_argc, char ***_argv, |
33 | struct nl_msg *msg) | |
34 | { | |
35 | struct nl_msg *flags; | |
36 | int err = -ENOBUFS; | |
37 | enum nl80211_mntr_flags flag; | |
38 | int argc = *_argc; | |
39 | char **argv = *_argv; | |
40 | ||
41 | flags = nlmsg_alloc(); | |
42 | if (!flags) | |
43 | return -ENOMEM; | |
44 | ||
45 | while (argc) { | |
46 | int ok = 0; | |
47 | for (flag = __NL80211_MNTR_FLAG_INVALID; | |
e14cc99e | 48 | flag <= NL80211_MNTR_FLAG_MAX; flag++) { |
dd65496b JB |
49 | if (strcmp(*argv, mntr_flags[flag]) == 0) { |
50 | ok = 1; | |
4a3bf753 JB |
51 | /* |
52 | * This shouldn't be adding "flag" if that is | |
53 | * zero, but due to a problem in the kernel's | |
54 | * nl80211 code (using NLA_NESTED policy) it | |
55 | * will reject an empty nested attribute but | |
56 | * not one that contains an invalid attribute | |
57 | */ | |
dd65496b JB |
58 | NLA_PUT_FLAG(flags, flag); |
59 | break; | |
60 | } | |
61 | } | |
62 | if (!ok) { | |
63 | err = -EINVAL; | |
64 | goto out; | |
65 | } | |
66 | argc--; | |
67 | argv++; | |
68 | } | |
69 | ||
70 | nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags); | |
71 | err = 0; | |
72 | nla_put_failure: | |
73 | out: | |
74 | nlmsg_free(flags); | |
75 | ||
76 | *_argc = argc; | |
77 | *_argv = argv; | |
78 | ||
79 | return err; | |
80 | } | |
81 | ||
1ae3d621 JB |
82 | /* for help */ |
83 | #define IFACE_TYPES "Valid interface types are: managed, ibss, monitor, mesh, wds." | |
84 | ||
d17fe27e JB |
85 | /* return 0 if ok, internal error otherwise */ |
86 | static int get_if_type(int *argc, char ***argv, enum nl80211_iftype *type, | |
87 | bool need_type) | |
45c7212c JB |
88 | { |
89 | char *tpstr; | |
90 | ||
d17fe27e JB |
91 | if (*argc < 1 + !!need_type) |
92 | return 1; | |
45c7212c | 93 | |
d17fe27e JB |
94 | if (need_type && strcmp((*argv)[0], "type")) |
95 | return 1; | |
45c7212c | 96 | |
d17fe27e JB |
97 | tpstr = (*argv)[!!need_type]; |
98 | *argc -= 1 + !!need_type; | |
99 | *argv += 1 + !!need_type; | |
45c7212c JB |
100 | |
101 | if (strcmp(tpstr, "adhoc") == 0 || | |
102 | strcmp(tpstr, "ibss") == 0) { | |
103 | *type = NL80211_IFTYPE_ADHOC; | |
d17fe27e | 104 | return 0; |
45c7212c JB |
105 | } else if (strcmp(tpstr, "monitor") == 0) { |
106 | *type = NL80211_IFTYPE_MONITOR; | |
d17fe27e | 107 | return 0; |
e08b5488 JB |
108 | } else if (strcmp(tpstr, "master") == 0 || |
109 | strcmp(tpstr, "ap") == 0) { | |
c1d44a6c | 110 | *type = NL80211_IFTYPE_UNSPECIFIED; |
e08b5488 JB |
111 | fprintf(stderr, "You need to run a management daemon, e.g. hostapd,\n"); |
112 | fprintf(stderr, "see http://wireless.kernel.org/en/users/Documentation/hostapd\n"); | |
113 | fprintf(stderr, "for more information on how to do that.\n"); | |
c1d44a6c | 114 | return 2; |
4d3a72da | 115 | } else if (strcmp(tpstr, "__ap") == 0) { |
45c7212c | 116 | *type = NL80211_IFTYPE_AP; |
d17fe27e | 117 | return 0; |
4d3a72da | 118 | } else if (strcmp(tpstr, "__ap_vlan") == 0) { |
45c7212c | 119 | *type = NL80211_IFTYPE_AP_VLAN; |
d17fe27e | 120 | return 0; |
45c7212c JB |
121 | } else if (strcmp(tpstr, "wds") == 0) { |
122 | *type = NL80211_IFTYPE_WDS; | |
d17fe27e | 123 | return 0; |
a65df165 JB |
124 | } else if (strcmp(tpstr, "managed") == 0 || |
125 | strcmp(tpstr, "mgd") == 0 || | |
126 | strcmp(tpstr, "station") == 0) { | |
45c7212c | 127 | *type = NL80211_IFTYPE_STATION; |
d17fe27e | 128 | return 0; |
3d1e8704 | 129 | } else if (strcmp(tpstr, "mp") == 0 || |
a65df165 | 130 | strcmp(tpstr, "mesh") == 0) { |
3d1e8704 | 131 | *type = NL80211_IFTYPE_MESH_POINT; |
d17fe27e | 132 | return 0; |
a4464243 JB |
133 | } else if (strcmp(tpstr, "__p2pcl") == 0) { |
134 | *type = NL80211_IFTYPE_P2P_CLIENT; | |
135 | return 0; | |
136 | } else if (strcmp(tpstr, "__p2pgo") == 0) { | |
137 | *type = NL80211_IFTYPE_P2P_GO; | |
138 | return 0; | |
45c7212c JB |
139 | } |
140 | ||
45c7212c | 141 | fprintf(stderr, "invalid interface type %s\n", tpstr); |
d17fe27e | 142 | return 2; |
45c7212c JB |
143 | } |
144 | ||
39566cca FF |
145 | static int parse_4addr_flag(const char *value, struct nl_msg *msg) |
146 | { | |
147 | if (strcmp(value, "on") == 0) | |
148 | NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 1); | |
149 | else if (strcmp(value, "off") == 0) | |
150 | NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 0); | |
151 | else | |
152 | return 1; | |
153 | return 0; | |
154 | ||
155 | nla_put_failure: | |
156 | return 1; | |
157 | } | |
158 | ||
7c37a24d JB |
159 | static int handle_interface_add(struct nl80211_state *state, |
160 | struct nl_cb *cb, | |
bd396f2a JB |
161 | struct nl_msg *msg, |
162 | int argc, char **argv) | |
45c7212c | 163 | { |
2dfd6bfa | 164 | char *name; |
3d1e8704 | 165 | char *mesh_id = NULL; |
45c7212c | 166 | enum nl80211_iftype type; |
70391ccf | 167 | int tpset; |
45c7212c | 168 | |
bd396f2a | 169 | if (argc < 1) |
5e75fd04 | 170 | return 1; |
45c7212c | 171 | |
2dfd6bfa | 172 | name = argv[0]; |
45c7212c JB |
173 | argc--; |
174 | argv++; | |
175 | ||
d17fe27e JB |
176 | tpset = get_if_type(&argc, &argv, &type, true); |
177 | if (tpset) | |
c1d44a6c | 178 | return tpset; |
45c7212c | 179 | |
3d1e8704 | 180 | if (argc) { |
dd65496b JB |
181 | if (strcmp(argv[0], "mesh_id") == 0) { |
182 | argc--; | |
183 | argv++; | |
184 | ||
185 | if (!argc) | |
186 | return 1; | |
187 | mesh_id = argv[0]; | |
188 | argc--; | |
189 | argv++; | |
39566cca FF |
190 | } else if (strcmp(argv[0], "4addr") == 0) { |
191 | argc--; | |
192 | argv++; | |
193 | if (parse_4addr_flag(argv[0], msg)) { | |
194 | fprintf(stderr, "4addr error\n"); | |
195 | return 2; | |
196 | } | |
197 | argc--; | |
198 | argv++; | |
dd65496b JB |
199 | } else if (strcmp(argv[0], "flags") == 0) { |
200 | argc--; | |
201 | argv++; | |
202 | if (parse_mntr_flags(&argc, &argv, msg)) { | |
203 | fprintf(stderr, "flags error\n"); | |
204 | return 2; | |
205 | } | |
206 | } else { | |
5e75fd04 | 207 | return 1; |
dd65496b | 208 | } |
3d1e8704 LCC |
209 | } |
210 | ||
5e75fd04 JB |
211 | if (argc) |
212 | return 1; | |
45c7212c | 213 | |
45c7212c | 214 | NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, name); |
6d28ce25 | 215 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type); |
3d1e8704 LCC |
216 | if (mesh_id) |
217 | NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id); | |
45c7212c | 218 | |
70391ccf | 219 | return 0; |
5e75fd04 | 220 | nla_put_failure: |
70391ccf | 221 | return -ENOBUFS; |
45c7212c | 222 | } |
39566cca | 223 | COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]", |
1ae3d621 JB |
224 | NL80211_CMD_NEW_INTERFACE, 0, CIB_PHY, handle_interface_add, |
225 | "Add a new virtual interface with the given configuration.\n" | |
226 | IFACE_TYPES "\n\n" | |
227 | "The flags are only used for monitor interfaces, valid flags are:\n" | |
228 | VALID_FLAGS "\n\n" | |
229 | "The mesh_id is used only for mesh mode."); | |
39566cca | 230 | COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [4addr on|off] [flags <flag>*]", |
01ae06f9 | 231 | NL80211_CMD_NEW_INTERFACE, 0, CIB_NETDEV, handle_interface_add, NULL); |
45c7212c | 232 | |
7c37a24d JB |
233 | static int handle_interface_del(struct nl80211_state *state, |
234 | struct nl_cb *cb, | |
bd396f2a JB |
235 | struct nl_msg *msg, |
236 | int argc, char **argv) | |
3fcfe40e | 237 | { |
70391ccf | 238 | return 0; |
3fcfe40e | 239 | } |
1ae3d621 JB |
240 | TOPLEVEL(del, NULL, NL80211_CMD_DEL_INTERFACE, 0, CIB_NETDEV, handle_interface_del, |
241 | "Remove this virtual interface"); | |
ce5af55c | 242 | HIDDEN(interface, del, NULL, NL80211_CMD_DEL_INTERFACE, 0, CIB_NETDEV, handle_interface_del); |
3fcfe40e | 243 | |
541ef425 JB |
244 | static int print_iface_handler(struct nl_msg *msg, void *arg) |
245 | { | |
246 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
247 | struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; | |
674567b8 JB |
248 | unsigned int *wiphy = arg; |
249 | const char *indent = ""; | |
541ef425 JB |
250 | |
251 | nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
252 | genlmsg_attrlen(gnlh, 0), NULL); | |
253 | ||
674567b8 JB |
254 | if (wiphy && tb_msg[NL80211_ATTR_WIPHY]) { |
255 | unsigned int thiswiphy = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY]); | |
256 | indent = "\t"; | |
257 | if (*wiphy != thiswiphy) | |
258 | printf("phy#%d\n", thiswiphy); | |
259 | *wiphy = thiswiphy; | |
260 | } | |
261 | ||
541ef425 | 262 | if (tb_msg[NL80211_ATTR_IFNAME]) |
674567b8 | 263 | printf("%sInterface %s\n", indent, nla_get_string(tb_msg[NL80211_ATTR_IFNAME])); |
541ef425 | 264 | if (tb_msg[NL80211_ATTR_IFINDEX]) |
674567b8 | 265 | printf("%s\tifindex %d\n", indent, nla_get_u32(tb_msg[NL80211_ATTR_IFINDEX])); |
541ef425 | 266 | if (tb_msg[NL80211_ATTR_IFTYPE]) |
674567b8 | 267 | printf("%s\ttype %s\n", indent, iftype_name(nla_get_u32(tb_msg[NL80211_ATTR_IFTYPE]))); |
541ef425 JB |
268 | |
269 | return NL_SKIP; | |
270 | } | |
271 | ||
7c37a24d JB |
272 | static int handle_interface_info(struct nl80211_state *state, |
273 | struct nl_cb *cb, | |
bd396f2a JB |
274 | struct nl_msg *msg, |
275 | int argc, char **argv) | |
541ef425 | 276 | { |
541ef425 | 277 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_iface_handler, NULL); |
70391ccf | 278 | return 0; |
541ef425 | 279 | } |
1ae3d621 JB |
280 | TOPLEVEL(info, NULL, NL80211_CMD_GET_INTERFACE, 0, CIB_NETDEV, handle_interface_info, |
281 | "Show information for this interface."); | |
cd293761 | 282 | |
7c37a24d JB |
283 | static int handle_interface_set(struct nl80211_state *state, |
284 | struct nl_cb *cb, | |
cd293761 JB |
285 | struct nl_msg *msg, |
286 | int argc, char **argv) | |
287 | { | |
cd293761 JB |
288 | if (!argc) |
289 | return 1; | |
290 | ||
cd293761 JB |
291 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_MONITOR); |
292 | ||
dd65496b JB |
293 | switch (parse_mntr_flags(&argc, &argv, msg)) { |
294 | case 0: | |
295 | return 0; | |
296 | case -ENOMEM: | |
297 | fprintf(stderr, "failed to allocate flags\n"); | |
298 | return 2; | |
299 | case -EINVAL: | |
300 | fprintf(stderr, "unknown flag %s\n", *argv); | |
301 | return 2; | |
302 | default: | |
303 | return 2; | |
cd293761 | 304 | } |
cd293761 | 305 | nla_put_failure: |
dd65496b | 306 | return -ENOBUFS; |
cd293761 | 307 | } |
1ae3d621 JB |
308 | COMMAND(set, monitor, "<flag>*", |
309 | NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_set, | |
310 | "Set monitor flags. Valid flags are:\n" | |
311 | VALID_FLAGS); | |
82d028d0 | 312 | |
7c37a24d JB |
313 | static int handle_interface_meshid(struct nl80211_state *state, |
314 | struct nl_cb *cb, | |
82d028d0 JB |
315 | struct nl_msg *msg, |
316 | int argc, char **argv) | |
317 | { | |
318 | char *mesh_id = NULL; | |
319 | ||
320 | if (argc != 1) | |
321 | return 1; | |
322 | ||
323 | mesh_id = argv[0]; | |
324 | ||
325 | NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(mesh_id), mesh_id); | |
326 | ||
327 | return 0; | |
328 | nla_put_failure: | |
329 | return -ENOBUFS; | |
330 | } | |
331 | COMMAND(set, meshid, "<meshid>", | |
01ae06f9 | 332 | NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_meshid, NULL); |
674567b8 JB |
333 | |
334 | static unsigned int dev_dump_wiphy; | |
335 | ||
336 | static int handle_dev_dump(struct nl80211_state *state, | |
337 | struct nl_cb *cb, | |
338 | struct nl_msg *msg, | |
339 | int argc, char **argv) | |
340 | { | |
341 | dev_dump_wiphy = -1; | |
342 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_iface_handler, &dev_dump_wiphy); | |
343 | return 0; | |
344 | } | |
1ae3d621 JB |
345 | TOPLEVEL(dev, NULL, NL80211_CMD_GET_INTERFACE, NLM_F_DUMP, CIB_NONE, handle_dev_dump, |
346 | "List all network interfaces for wireless hardware."); | |
d17fe27e JB |
347 | |
348 | static int handle_interface_type(struct nl80211_state *state, | |
349 | struct nl_cb *cb, | |
350 | struct nl_msg *msg, | |
351 | int argc, char **argv) | |
352 | { | |
353 | enum nl80211_iftype type; | |
354 | int tpset; | |
355 | ||
356 | tpset = get_if_type(&argc, &argv, &type, false); | |
357 | if (tpset) | |
358 | return tpset; | |
359 | ||
360 | if (argc) | |
361 | return 1; | |
362 | ||
363 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, type); | |
364 | ||
365 | return 0; | |
366 | nla_put_failure: | |
367 | return -ENOBUFS; | |
368 | } | |
369 | COMMAND(set, type, "<type>", | |
1ae3d621 JB |
370 | NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_type, |
371 | "Set interface type/mode.\n" | |
372 | IFACE_TYPES); | |
20e4ff8a JF |
373 | |
374 | static int handle_interface_4addr(struct nl80211_state *state, | |
375 | struct nl_cb *cb, | |
376 | struct nl_msg *msg, | |
377 | int argc, char **argv) | |
378 | { | |
379 | if (argc != 1) | |
380 | return 1; | |
381 | return parse_4addr_flag(argv[0], msg); | |
382 | } | |
383 | COMMAND(set, 4addr, "<on|off>", | |
384 | NL80211_CMD_SET_INTERFACE, 0, CIB_NETDEV, handle_interface_4addr, | |
385 | "Set interface 4addr (WDS) mode.\n"); |