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1 | /* | |
2 | * link_gre6.c gre driver module | |
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: Dmitry Kozlov <xeb@mail.ru> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <string.h> | |
14 | #include <net/if.h> | |
15 | #include <sys/types.h> | |
16 | #include <sys/socket.h> | |
17 | #include <arpa/inet.h> | |
18 | ||
19 | #include <linux/ip.h> | |
20 | #include <linux/if_tunnel.h> | |
21 | #include <linux/ip6_tunnel.h> | |
22 | ||
23 | #include "rt_names.h" | |
24 | #include "utils.h" | |
25 | #include "ip_common.h" | |
26 | #include "tunnel.h" | |
27 | ||
28 | #define IP6_FLOWINFO_TCLASS htonl(0x0FF00000) | |
29 | #define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF) | |
30 | ||
31 | #define DEFAULT_TNL_HOP_LIMIT (64) | |
32 | ||
33 | static void gre_print_help(struct link_util *lu, int argc, char **argv, FILE *f) | |
34 | { | |
35 | fprintf(f, | |
36 | "Usage: ... %-9s [ remote ADDR ]\n", | |
37 | lu->id | |
38 | ); | |
39 | fprintf(f, | |
40 | " [ local ADDR ]\n" | |
41 | " [ [no][i|o]seq ]\n" | |
42 | " [ [i|o]key KEY | no[i|o]key ]\n" | |
43 | " [ [no][i|o]csum ]\n" | |
44 | " [ hoplimit TTL ]\n" | |
45 | " [ encaplimit ELIM ]\n" | |
46 | " [ tclass TCLASS ]\n" | |
47 | " [ flowlabel FLOWLABEL ]\n" | |
48 | " [ dscp inherit ]\n" | |
49 | " [ dev PHYS_DEV ]\n" | |
50 | " [ fwmark MARK ]\n" | |
51 | " [ [no]allow-localremote ]\n" | |
52 | " [ external ]\n" | |
53 | " [ noencap ]\n" | |
54 | " [ encap { fou | gue | none } ]\n" | |
55 | " [ encap-sport PORT ]\n" | |
56 | " [ encap-dport PORT ]\n" | |
57 | " [ [no]encap-csum ]\n" | |
58 | " [ [no]encap-csum6 ]\n" | |
59 | " [ [no]encap-remcsum ]\n" | |
60 | " [ erspan_ver version ]\n" | |
61 | " [ erspan IDX ]\n" | |
62 | " [ erspan_dir { ingress | egress } ]\n" | |
63 | " [ erspan_hwid hwid ]\n" | |
64 | "\n" | |
65 | ); | |
66 | fprintf(f, | |
67 | "Where: ADDR := IPV6_ADDRESS\n" | |
68 | " TTL := { 0..255 } (default=%d)\n" | |
69 | " KEY := { DOTTED_QUAD | NUMBER }\n" | |
70 | " ELIM := { none | 0..255 }(default=%d)\n" | |
71 | " TCLASS := { 0x0..0xff | inherit }\n" | |
72 | " FLOWLABEL := { 0x0..0xfffff | inherit }\n" | |
73 | " MARK := { 0x0..0xffffffff | inherit }\n", | |
74 | DEFAULT_TNL_HOP_LIMIT, IPV6_DEFAULT_TNL_ENCAP_LIMIT | |
75 | ); | |
76 | } | |
77 | ||
78 | static int gre_parse_opt(struct link_util *lu, int argc, char **argv, | |
79 | struct nlmsghdr *n) | |
80 | { | |
81 | struct ifinfomsg *ifi = NLMSG_DATA(n); | |
82 | struct { | |
83 | struct nlmsghdr n; | |
84 | struct ifinfomsg i; | |
85 | } req = { | |
86 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)), | |
87 | .n.nlmsg_flags = NLM_F_REQUEST, | |
88 | .n.nlmsg_type = RTM_GETLINK, | |
89 | .i.ifi_family = preferred_family, | |
90 | .i.ifi_index = ifi->ifi_index, | |
91 | }; | |
92 | struct nlmsghdr *answer; | |
93 | struct rtattr *tb[IFLA_MAX + 1]; | |
94 | struct rtattr *linkinfo[IFLA_INFO_MAX+1]; | |
95 | struct rtattr *greinfo[IFLA_GRE_MAX + 1]; | |
96 | int len; | |
97 | __u16 iflags = 0; | |
98 | __u16 oflags = 0; | |
99 | __be32 ikey = 0; | |
100 | __be32 okey = 0; | |
101 | inet_prefix saddr, daddr; | |
102 | __u8 hop_limit = DEFAULT_TNL_HOP_LIMIT; | |
103 | __u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT; | |
104 | __u32 flowinfo = 0; | |
105 | __u32 flags = 0; | |
106 | __u32 link = 0; | |
107 | __u16 encaptype = 0; | |
108 | __u16 encapflags = TUNNEL_ENCAP_FLAG_CSUM6; | |
109 | __u16 encapsport = 0; | |
110 | __u16 encapdport = 0; | |
111 | __u8 metadata = 0; | |
112 | __u32 fwmark = 0; | |
113 | __u32 erspan_idx = 0; | |
114 | __u8 erspan_ver = 0; | |
115 | __u8 erspan_dir = 0; | |
116 | __u16 erspan_hwid = 0; | |
117 | ||
118 | inet_prefix_reset(&saddr); | |
119 | inet_prefix_reset(&daddr); | |
120 | ||
121 | if (!(n->nlmsg_flags & NLM_F_CREATE)) { | |
122 | const struct rtattr *rta; | |
123 | ||
124 | if (rtnl_talk(&rth, &req.n, &answer) < 0) { | |
125 | get_failed: | |
126 | fprintf(stderr, | |
127 | "Failed to get existing tunnel info.\n"); | |
128 | return -1; | |
129 | } | |
130 | ||
131 | len = answer->nlmsg_len; | |
132 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
133 | if (len < 0) | |
134 | goto get_failed; | |
135 | ||
136 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(NLMSG_DATA(answer)), len); | |
137 | ||
138 | if (!tb[IFLA_LINKINFO]) | |
139 | goto get_failed; | |
140 | ||
141 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
142 | ||
143 | if (!linkinfo[IFLA_INFO_DATA]) | |
144 | goto get_failed; | |
145 | ||
146 | parse_rtattr_nested(greinfo, IFLA_GRE_MAX, | |
147 | linkinfo[IFLA_INFO_DATA]); | |
148 | ||
149 | rta = greinfo[IFLA_GRE_LOCAL]; | |
150 | if (rta && get_addr_rta(&saddr, rta, AF_INET6)) | |
151 | goto get_failed; | |
152 | ||
153 | rta = greinfo[IFLA_GRE_REMOTE]; | |
154 | if (rta && get_addr_rta(&daddr, rta, AF_INET6)) | |
155 | goto get_failed; | |
156 | ||
157 | if (greinfo[IFLA_GRE_IKEY]) | |
158 | ikey = rta_getattr_u32(greinfo[IFLA_GRE_IKEY]); | |
159 | ||
160 | if (greinfo[IFLA_GRE_OKEY]) | |
161 | okey = rta_getattr_u32(greinfo[IFLA_GRE_OKEY]); | |
162 | ||
163 | if (greinfo[IFLA_GRE_IFLAGS]) | |
164 | iflags = rta_getattr_u16(greinfo[IFLA_GRE_IFLAGS]); | |
165 | ||
166 | if (greinfo[IFLA_GRE_OFLAGS]) | |
167 | oflags = rta_getattr_u16(greinfo[IFLA_GRE_OFLAGS]); | |
168 | ||
169 | if (greinfo[IFLA_GRE_TTL]) | |
170 | hop_limit = rta_getattr_u8(greinfo[IFLA_GRE_TTL]); | |
171 | ||
172 | if (greinfo[IFLA_GRE_LINK]) | |
173 | link = rta_getattr_u32(greinfo[IFLA_GRE_LINK]); | |
174 | ||
175 | if (greinfo[IFLA_GRE_ENCAP_LIMIT]) | |
176 | encap_limit = rta_getattr_u8(greinfo[IFLA_GRE_ENCAP_LIMIT]); | |
177 | ||
178 | if (greinfo[IFLA_GRE_FLOWINFO]) | |
179 | flowinfo = rta_getattr_u32(greinfo[IFLA_GRE_FLOWINFO]); | |
180 | ||
181 | if (greinfo[IFLA_GRE_FLAGS]) | |
182 | flags = rta_getattr_u32(greinfo[IFLA_GRE_FLAGS]); | |
183 | ||
184 | if (greinfo[IFLA_GRE_ENCAP_TYPE]) | |
185 | encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]); | |
186 | ||
187 | if (greinfo[IFLA_GRE_ENCAP_FLAGS]) | |
188 | encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]); | |
189 | ||
190 | if (greinfo[IFLA_GRE_ENCAP_SPORT]) | |
191 | encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]); | |
192 | ||
193 | if (greinfo[IFLA_GRE_ENCAP_DPORT]) | |
194 | encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]); | |
195 | ||
196 | if (greinfo[IFLA_GRE_COLLECT_METADATA]) | |
197 | metadata = 1; | |
198 | ||
199 | if (greinfo[IFLA_GRE_FWMARK]) | |
200 | fwmark = rta_getattr_u32(greinfo[IFLA_GRE_FWMARK]); | |
201 | ||
202 | if (greinfo[IFLA_GRE_ERSPAN_INDEX]) | |
203 | erspan_idx = rta_getattr_u32(greinfo[IFLA_GRE_ERSPAN_INDEX]); | |
204 | ||
205 | if (greinfo[IFLA_GRE_ERSPAN_VER]) | |
206 | erspan_ver = rta_getattr_u8(greinfo[IFLA_GRE_ERSPAN_VER]); | |
207 | ||
208 | if (greinfo[IFLA_GRE_ERSPAN_DIR]) | |
209 | erspan_dir = rta_getattr_u8(greinfo[IFLA_GRE_ERSPAN_DIR]); | |
210 | ||
211 | if (greinfo[IFLA_GRE_ERSPAN_HWID]) | |
212 | erspan_hwid = rta_getattr_u16(greinfo[IFLA_GRE_ERSPAN_HWID]); | |
213 | ||
214 | free(answer); | |
215 | } | |
216 | ||
217 | while (argc > 0) { | |
218 | if (!matches(*argv, "key")) { | |
219 | NEXT_ARG(); | |
220 | iflags |= GRE_KEY; | |
221 | oflags |= GRE_KEY; | |
222 | ikey = okey = tnl_parse_key("key", *argv); | |
223 | } else if (!matches(*argv, "nokey")) { | |
224 | iflags &= ~GRE_KEY; | |
225 | oflags &= ~GRE_KEY; | |
226 | ikey = okey = 0; | |
227 | } else if (!matches(*argv, "ikey")) { | |
228 | NEXT_ARG(); | |
229 | iflags |= GRE_KEY; | |
230 | ikey = tnl_parse_key("ikey", *argv); | |
231 | } else if (!matches(*argv, "noikey")) { | |
232 | iflags &= ~GRE_KEY; | |
233 | ikey = 0; | |
234 | } else if (!matches(*argv, "okey")) { | |
235 | NEXT_ARG(); | |
236 | oflags |= GRE_KEY; | |
237 | okey = tnl_parse_key("okey", *argv); | |
238 | } else if (!matches(*argv, "nookey")) { | |
239 | oflags &= ~GRE_KEY; | |
240 | okey = 0; | |
241 | } else if (!matches(*argv, "seq")) { | |
242 | iflags |= GRE_SEQ; | |
243 | oflags |= GRE_SEQ; | |
244 | } else if (!matches(*argv, "noseq")) { | |
245 | iflags &= ~GRE_SEQ; | |
246 | oflags &= ~GRE_SEQ; | |
247 | } else if (!matches(*argv, "iseq")) { | |
248 | iflags |= GRE_SEQ; | |
249 | } else if (!matches(*argv, "noiseq")) { | |
250 | iflags &= ~GRE_SEQ; | |
251 | } else if (!matches(*argv, "oseq")) { | |
252 | oflags |= GRE_SEQ; | |
253 | } else if (!matches(*argv, "nooseq")) { | |
254 | oflags &= ~GRE_SEQ; | |
255 | } else if (!matches(*argv, "csum")) { | |
256 | iflags |= GRE_CSUM; | |
257 | oflags |= GRE_CSUM; | |
258 | } else if (!matches(*argv, "nocsum")) { | |
259 | iflags &= ~GRE_CSUM; | |
260 | oflags &= ~GRE_CSUM; | |
261 | } else if (!matches(*argv, "icsum")) { | |
262 | iflags |= GRE_CSUM; | |
263 | } else if (!matches(*argv, "noicsum")) { | |
264 | iflags &= ~GRE_CSUM; | |
265 | } else if (!matches(*argv, "ocsum")) { | |
266 | oflags |= GRE_CSUM; | |
267 | } else if (!matches(*argv, "noocsum")) { | |
268 | oflags &= ~GRE_CSUM; | |
269 | } else if (!matches(*argv, "remote")) { | |
270 | NEXT_ARG(); | |
271 | get_addr(&daddr, *argv, AF_INET6); | |
272 | } else if (!matches(*argv, "local")) { | |
273 | NEXT_ARG(); | |
274 | get_addr(&saddr, *argv, AF_INET6); | |
275 | } else if (!matches(*argv, "dev")) { | |
276 | NEXT_ARG(); | |
277 | link = ll_name_to_index(*argv); | |
278 | if (!link) | |
279 | exit(nodev(*argv)); | |
280 | } else if (!matches(*argv, "ttl") || | |
281 | !matches(*argv, "hoplimit") || | |
282 | !matches(*argv, "hlim")) { | |
283 | NEXT_ARG(); | |
284 | if (strcmp(*argv, "inherit") != 0) { | |
285 | if (get_u8(&hop_limit, *argv, 0)) | |
286 | invarg("invalid HLIM\n", *argv); | |
287 | } else | |
288 | hop_limit = 0; | |
289 | } else if (!matches(*argv, "tos") || | |
290 | !matches(*argv, "tclass") || | |
291 | !matches(*argv, "dsfield")) { | |
292 | __u8 uval; | |
293 | ||
294 | NEXT_ARG(); | |
295 | flowinfo &= ~IP6_FLOWINFO_TCLASS; | |
296 | if (strcmp(*argv, "inherit") == 0) | |
297 | flags |= IP6_TNL_F_USE_ORIG_TCLASS; | |
298 | else { | |
299 | if (get_u8(&uval, *argv, 16)) | |
300 | invarg("invalid TClass", *argv); | |
301 | flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS; | |
302 | flags &= ~IP6_TNL_F_USE_ORIG_TCLASS; | |
303 | } | |
304 | } else if (strcmp(*argv, "flowlabel") == 0 || | |
305 | strcmp(*argv, "fl") == 0) { | |
306 | __u32 uval; | |
307 | ||
308 | NEXT_ARG(); | |
309 | flowinfo &= ~IP6_FLOWINFO_FLOWLABEL; | |
310 | if (strcmp(*argv, "inherit") == 0) | |
311 | flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
312 | else { | |
313 | if (get_u32(&uval, *argv, 16)) | |
314 | invarg("invalid Flowlabel", *argv); | |
315 | if (uval > 0xFFFFF) | |
316 | invarg("invalid Flowlabel", *argv); | |
317 | flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL; | |
318 | flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
319 | } | |
320 | } else if (strcmp(*argv, "dscp") == 0) { | |
321 | NEXT_ARG(); | |
322 | if (strcmp(*argv, "inherit") != 0) | |
323 | invarg("not inherit", *argv); | |
324 | flags |= IP6_TNL_F_RCV_DSCP_COPY; | |
325 | } else if (strcmp(*argv, "noencap") == 0) { | |
326 | encaptype = TUNNEL_ENCAP_NONE; | |
327 | } else if (strcmp(*argv, "encap") == 0) { | |
328 | NEXT_ARG(); | |
329 | if (strcmp(*argv, "fou") == 0) | |
330 | encaptype = TUNNEL_ENCAP_FOU; | |
331 | else if (strcmp(*argv, "gue") == 0) | |
332 | encaptype = TUNNEL_ENCAP_GUE; | |
333 | else if (strcmp(*argv, "none") == 0) | |
334 | encaptype = TUNNEL_ENCAP_NONE; | |
335 | else | |
336 | invarg("Invalid encap type.", *argv); | |
337 | } else if (strcmp(*argv, "encap-sport") == 0) { | |
338 | NEXT_ARG(); | |
339 | if (strcmp(*argv, "auto") == 0) | |
340 | encapsport = 0; | |
341 | else if (get_u16(&encapsport, *argv, 0)) | |
342 | invarg("Invalid source port.", *argv); | |
343 | } else if (strcmp(*argv, "encap-dport") == 0) { | |
344 | NEXT_ARG(); | |
345 | if (get_u16(&encapdport, *argv, 0)) | |
346 | invarg("Invalid destination port.", *argv); | |
347 | } else if (strcmp(*argv, "encap-csum") == 0) { | |
348 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM; | |
349 | } else if (strcmp(*argv, "noencap-csum") == 0) { | |
350 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM; | |
351 | } else if (strcmp(*argv, "encap-udp6-csum") == 0) { | |
352 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM6; | |
353 | } else if (strcmp(*argv, "noencap-udp6-csum") == 0) { | |
354 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6; | |
355 | } else if (strcmp(*argv, "encap-remcsum") == 0) { | |
356 | encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM; | |
357 | } else if (strcmp(*argv, "noencap-remcsum") == 0) { | |
358 | encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM; | |
359 | } else if (strcmp(*argv, "external") == 0) { | |
360 | metadata = 1; | |
361 | } else if (strcmp(*argv, "fwmark") == 0) { | |
362 | NEXT_ARG(); | |
363 | if (strcmp(*argv, "inherit") == 0) { | |
364 | flags |= IP6_TNL_F_USE_ORIG_FWMARK; | |
365 | fwmark = 0; | |
366 | } else { | |
367 | if (get_u32(&fwmark, *argv, 0)) | |
368 | invarg("invalid fwmark\n", *argv); | |
369 | flags &= ~IP6_TNL_F_USE_ORIG_FWMARK; | |
370 | } | |
371 | } else if (strcmp(*argv, "allow-localremote") == 0) { | |
372 | flags |= IP6_TNL_F_ALLOW_LOCAL_REMOTE; | |
373 | } else if (strcmp(*argv, "noallow-localremote") == 0) { | |
374 | flags &= ~IP6_TNL_F_ALLOW_LOCAL_REMOTE; | |
375 | } else if (strcmp(*argv, "encaplimit") == 0) { | |
376 | NEXT_ARG(); | |
377 | if (strcmp(*argv, "none") == 0) { | |
378 | flags |= IP6_TNL_F_IGN_ENCAP_LIMIT; | |
379 | } else { | |
380 | __u8 uval; | |
381 | ||
382 | if (get_u8(&uval, *argv, 0)) | |
383 | invarg("invalid ELIM", *argv); | |
384 | encap_limit = uval; | |
385 | flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT; | |
386 | } | |
387 | } else if (strcmp(*argv, "erspan") == 0) { | |
388 | NEXT_ARG(); | |
389 | if (get_u32(&erspan_idx, *argv, 0)) | |
390 | invarg("invalid erspan index\n", *argv); | |
391 | if (erspan_idx & ~((1<<20) - 1) || erspan_idx == 0) | |
392 | invarg("erspan index must be > 0 and <= 20-bit\n", *argv); | |
393 | } else if (strcmp(*argv, "erspan_ver") == 0) { | |
394 | NEXT_ARG(); | |
395 | if (get_u8(&erspan_ver, *argv, 0)) | |
396 | invarg("invalid erspan version\n", *argv); | |
397 | if (erspan_ver != 1 && erspan_ver != 2) | |
398 | invarg("erspan version must be 1 or 2\n", *argv); | |
399 | } else if (strcmp(*argv, "erspan_dir") == 0) { | |
400 | NEXT_ARG(); | |
401 | if (matches(*argv, "ingress") == 0) | |
402 | erspan_dir = 0; | |
403 | else if (matches(*argv, "egress") == 0) | |
404 | erspan_dir = 1; | |
405 | else | |
406 | invarg("Invalid erspan direction.", *argv); | |
407 | } else if (strcmp(*argv, "erspan_hwid") == 0) { | |
408 | NEXT_ARG(); | |
409 | if (get_u16(&erspan_hwid, *argv, 0)) | |
410 | invarg("invalid erspan hwid\n", *argv); | |
411 | } else { | |
412 | gre_print_help(lu, argc, argv, stderr); | |
413 | return -1; | |
414 | } | |
415 | argc--; argv++; | |
416 | } | |
417 | ||
418 | if (metadata) { | |
419 | addattr_l(n, 1024, IFLA_GRE_COLLECT_METADATA, NULL, 0); | |
420 | return 0; | |
421 | } | |
422 | ||
423 | addattr32(n, 1024, IFLA_GRE_IKEY, ikey); | |
424 | addattr32(n, 1024, IFLA_GRE_OKEY, okey); | |
425 | addattr_l(n, 1024, IFLA_GRE_IFLAGS, &iflags, 2); | |
426 | addattr_l(n, 1024, IFLA_GRE_OFLAGS, &oflags, 2); | |
427 | if (is_addrtype_inet_not_unspec(&saddr)) | |
428 | addattr_l(n, 1024, IFLA_GRE_LOCAL, saddr.data, saddr.bytelen); | |
429 | if (is_addrtype_inet_not_unspec(&daddr)) | |
430 | addattr_l(n, 1024, IFLA_GRE_REMOTE, daddr.data, daddr.bytelen); | |
431 | if (link) | |
432 | addattr32(n, 1024, IFLA_GRE_LINK, link); | |
433 | addattr_l(n, 1024, IFLA_GRE_TTL, &hop_limit, 1); | |
434 | addattr_l(n, 1024, IFLA_GRE_ENCAP_LIMIT, &encap_limit, 1); | |
435 | addattr_l(n, 1024, IFLA_GRE_FLOWINFO, &flowinfo, 4); | |
436 | addattr32(n, 1024, IFLA_GRE_FLAGS, flags); | |
437 | addattr32(n, 1024, IFLA_GRE_FWMARK, fwmark); | |
438 | if (erspan_ver) { | |
439 | addattr8(n, 1024, IFLA_GRE_ERSPAN_VER, erspan_ver); | |
440 | if (erspan_ver == 1 && erspan_idx != 0) { | |
441 | addattr32(n, 1024, IFLA_GRE_ERSPAN_INDEX, erspan_idx); | |
442 | } else if (erspan_ver == 2) { | |
443 | addattr8(n, 1024, IFLA_GRE_ERSPAN_DIR, erspan_dir); | |
444 | addattr16(n, 1024, IFLA_GRE_ERSPAN_HWID, erspan_hwid); | |
445 | } | |
446 | } | |
447 | addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype); | |
448 | addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags); | |
449 | addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport)); | |
450 | addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport)); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
456 | { | |
457 | char s2[64]; | |
458 | __u16 iflags = 0; | |
459 | __u16 oflags = 0; | |
460 | __u32 flags = 0; | |
461 | __u32 flowinfo = 0; | |
462 | __u8 ttl = 0; | |
463 | ||
464 | if (!tb) | |
465 | return; | |
466 | ||
467 | if (tb[IFLA_GRE_COLLECT_METADATA]) { | |
468 | print_bool(PRINT_ANY, "external", "external", true); | |
469 | return; | |
470 | } | |
471 | ||
472 | if (tb[IFLA_GRE_FLAGS]) | |
473 | flags = rta_getattr_u32(tb[IFLA_GRE_FLAGS]); | |
474 | ||
475 | if (tb[IFLA_GRE_FLOWINFO]) | |
476 | flowinfo = rta_getattr_u32(tb[IFLA_GRE_FLOWINFO]); | |
477 | ||
478 | tnl_print_endpoint("remote", tb[IFLA_GRE_REMOTE], AF_INET6); | |
479 | tnl_print_endpoint("local", tb[IFLA_GRE_LOCAL], AF_INET6); | |
480 | ||
481 | if (tb[IFLA_GRE_LINK]) { | |
482 | __u32 link = rta_getattr_u32(tb[IFLA_GRE_LINK]); | |
483 | ||
484 | if (link) { | |
485 | print_string(PRINT_ANY, "link", "dev %s ", | |
486 | ll_index_to_name(link)); | |
487 | } | |
488 | } | |
489 | ||
490 | if (tb[IFLA_GRE_TTL]) | |
491 | ttl = rta_getattr_u8(tb[IFLA_GRE_TTL]); | |
492 | if (is_json_context() || ttl) | |
493 | print_uint(PRINT_ANY, "ttl", "hoplimit %u ", ttl); | |
494 | else | |
495 | print_string(PRINT_FP, NULL, "hoplimit %s ", "inherit"); | |
496 | ||
497 | if (flags & IP6_TNL_F_IGN_ENCAP_LIMIT) { | |
498 | print_bool(PRINT_ANY, | |
499 | "ip6_tnl_f_ign_encap_limit", | |
500 | "encaplimit none ", | |
501 | true); | |
502 | } else if (tb[IFLA_GRE_ENCAP_LIMIT]) { | |
503 | __u8 val = rta_getattr_u8(tb[IFLA_GRE_ENCAP_LIMIT]); | |
504 | ||
505 | print_uint(PRINT_ANY, "encap_limit", "encaplimit %u ", val); | |
506 | } | |
507 | ||
508 | if (flags & IP6_TNL_F_USE_ORIG_TCLASS) { | |
509 | print_bool(PRINT_ANY, | |
510 | "ip6_tnl_f_use_orig_tclass", | |
511 | "tclass inherit ", | |
512 | true); | |
513 | } else if (tb[IFLA_GRE_FLOWINFO]) { | |
514 | __u32 val = ntohl(flowinfo & IP6_FLOWINFO_TCLASS) >> 20; | |
515 | ||
516 | snprintf(s2, sizeof(s2), "0x%02x", val); | |
517 | print_string(PRINT_ANY, "tclass", "tclass %s ", s2); | |
518 | } | |
519 | ||
520 | if (flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) { | |
521 | print_bool(PRINT_ANY, | |
522 | "ip6_tnl_f_use_orig_flowlabel", | |
523 | "flowlabel inherit ", | |
524 | true); | |
525 | } else if (tb[IFLA_GRE_FLOWINFO]) { | |
526 | __u32 val = ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL); | |
527 | ||
528 | snprintf(s2, sizeof(s2), "0x%05x", val); | |
529 | print_string(PRINT_ANY, "flowlabel", "flowlabel %s ", s2); | |
530 | } | |
531 | ||
532 | if (flags & IP6_TNL_F_RCV_DSCP_COPY) | |
533 | print_bool(PRINT_ANY, | |
534 | "ip6_tnl_f_rcv_dscp_copy", | |
535 | "dscp inherit ", | |
536 | true); | |
537 | ||
538 | if (tb[IFLA_GRE_IFLAGS]) | |
539 | iflags = rta_getattr_u16(tb[IFLA_GRE_IFLAGS]); | |
540 | ||
541 | if (tb[IFLA_GRE_OFLAGS]) | |
542 | oflags = rta_getattr_u16(tb[IFLA_GRE_OFLAGS]); | |
543 | ||
544 | if ((iflags & GRE_KEY) && tb[IFLA_GRE_IKEY]) { | |
545 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_IKEY]), s2, sizeof(s2)); | |
546 | print_string(PRINT_ANY, "ikey", "ikey %s ", s2); | |
547 | } | |
548 | ||
549 | if ((oflags & GRE_KEY) && tb[IFLA_GRE_OKEY]) { | |
550 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_OKEY]), s2, sizeof(s2)); | |
551 | print_string(PRINT_ANY, "okey", "okey %s ", s2); | |
552 | } | |
553 | ||
554 | if (iflags & GRE_SEQ) | |
555 | print_bool(PRINT_ANY, "iseq", "iseq ", true); | |
556 | if (oflags & GRE_SEQ) | |
557 | print_bool(PRINT_ANY, "oseq", "oseq ", true); | |
558 | if (iflags & GRE_CSUM) | |
559 | print_bool(PRINT_ANY, "icsum", "icsum ", true); | |
560 | if (oflags & GRE_CSUM) | |
561 | print_bool(PRINT_ANY, "ocsum", "ocsum ", true); | |
562 | ||
563 | if (flags & IP6_TNL_F_ALLOW_LOCAL_REMOTE) | |
564 | print_bool(PRINT_ANY, | |
565 | "ip6_tnl_f_allow_local_remote", | |
566 | "allow-localremote ", | |
567 | true); | |
568 | ||
569 | if (flags & IP6_TNL_F_USE_ORIG_FWMARK) { | |
570 | print_bool(PRINT_ANY, | |
571 | "ip6_tnl_f_use_orig_fwmark", | |
572 | "fwmark inherit ", | |
573 | true); | |
574 | } else if (tb[IFLA_GRE_FWMARK]) { | |
575 | __u32 fwmark = rta_getattr_u32(tb[IFLA_GRE_FWMARK]); | |
576 | ||
577 | if (fwmark) { | |
578 | print_0xhex(PRINT_ANY, | |
579 | "fwmark", "fwmark 0x%x ", fwmark); | |
580 | } | |
581 | } | |
582 | ||
583 | if (tb[IFLA_GRE_ERSPAN_INDEX]) { | |
584 | __u32 erspan_idx = rta_getattr_u32(tb[IFLA_GRE_ERSPAN_INDEX]); | |
585 | ||
586 | print_uint(PRINT_ANY, | |
587 | "erspan_index", "erspan_index %u ", erspan_idx); | |
588 | } | |
589 | ||
590 | if (tb[IFLA_GRE_ERSPAN_VER]) { | |
591 | __u8 erspan_ver = rta_getattr_u8(tb[IFLA_GRE_ERSPAN_VER]); | |
592 | ||
593 | print_uint(PRINT_ANY, | |
594 | "erspan_ver", "erspan_ver %u ", erspan_ver); | |
595 | } | |
596 | ||
597 | if (tb[IFLA_GRE_ERSPAN_DIR]) { | |
598 | __u8 erspan_dir = rta_getattr_u8(tb[IFLA_GRE_ERSPAN_DIR]); | |
599 | ||
600 | if (erspan_dir == 0) | |
601 | print_string(PRINT_ANY, "erspan_dir", | |
602 | "erspan_dir ingress ", NULL); | |
603 | else | |
604 | print_string(PRINT_ANY, "erspan_dir", | |
605 | "erspan_dir egress ", NULL); | |
606 | } | |
607 | ||
608 | if (tb[IFLA_GRE_ERSPAN_HWID]) { | |
609 | __u16 erspan_hwid = rta_getattr_u16(tb[IFLA_GRE_ERSPAN_HWID]); | |
610 | ||
611 | print_0xhex(PRINT_ANY, | |
612 | "erspan_hwid", "erspan_hwid 0x%x ", erspan_hwid); | |
613 | } | |
614 | ||
615 | tnl_print_encap(tb, | |
616 | IFLA_GRE_ENCAP_TYPE, | |
617 | IFLA_GRE_ENCAP_FLAGS, | |
618 | IFLA_GRE_ENCAP_SPORT, | |
619 | IFLA_GRE_ENCAP_DPORT); | |
620 | } | |
621 | ||
622 | struct link_util ip6gre_link_util = { | |
623 | .id = "ip6gre", | |
624 | .maxattr = IFLA_GRE_MAX, | |
625 | .parse_opt = gre_parse_opt, | |
626 | .print_opt = gre_print_opt, | |
627 | .print_help = gre_print_help, | |
628 | }; | |
629 | ||
630 | struct link_util ip6gretap_link_util = { | |
631 | .id = "ip6gretap", | |
632 | .maxattr = IFLA_GRE_MAX, | |
633 | .parse_opt = gre_parse_opt, | |
634 | .print_opt = gre_print_opt, | |
635 | .print_help = gre_print_help, | |
636 | }; | |
637 | ||
638 | struct link_util ip6erspan_link_util = { | |
639 | .id = "ip6erspan", | |
640 | .maxattr = IFLA_GRE_MAX, | |
641 | .parse_opt = gre_parse_opt, | |
642 | .print_opt = gre_print_opt, | |
643 | .print_help = gre_print_help, | |
644 | }; |