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af89576d | 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 | ||
561e650e | 33 | static void print_usage(FILE *f) |
af89576d | 34 | { |
8b471354 PS |
35 | fprintf(f, |
36 | "Usage: ... { ip6gre | ip6gretap } [ remote ADDR ]\n" | |
37 | " [ local ADDR ]\n" | |
38 | " [ [i|o]seq ]\n" | |
39 | " [ [i|o]key KEY ]\n" | |
40 | " [ [i|o]csum ]\n" | |
41 | " [ hoplimit TTL ]\n" | |
42 | " [ encaplimit ELIM ]\n" | |
43 | " [ tclass TCLASS ]\n" | |
44 | " [ flowlabel FLOWLABEL ]\n" | |
45 | " [ dscp inherit ]\n" | |
46 | " [ dev PHYS_DEV ]\n" | |
47 | " [ noencap ]\n" | |
48 | " [ encap { fou | gue | none } ]\n" | |
49 | " [ encap-sport PORT ]\n" | |
50 | " [ encap-dport PORT ]\n" | |
51 | " [ [no]encap-csum ]\n" | |
52 | " [ [no]encap-csum6 ]\n" | |
53 | " [ [no]encap-remcsum ]\n" | |
54 | "\n" | |
55 | "Where: ADDR := IPV6_ADDRESS\n" | |
56 | " TTL := { 0..255 } (default=%d)\n" | |
57 | " KEY := { DOTTED_QUAD | NUMBER }\n" | |
58 | " ELIM := { none | 0..255 }(default=%d)\n" | |
59 | " TCLASS := { 0x0..0xff | inherit }\n" | |
60 | " FLOWLABEL := { 0x0..0xfffff | inherit }\n", | |
61 | DEFAULT_TNL_HOP_LIMIT, IPV6_DEFAULT_TNL_ENCAP_LIMIT | |
62 | ); | |
561e650e | 63 | } |
64 | ||
65 | static void usage(void) __attribute__((noreturn)); | |
66 | static void usage(void) | |
67 | { | |
68 | print_usage(stderr); | |
af89576d | 69 | exit(-1); |
70 | } | |
71 | ||
72 | static int gre_parse_opt(struct link_util *lu, int argc, char **argv, | |
73 | struct nlmsghdr *n) | |
74 | { | |
d17b136f | 75 | struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1); |
af89576d | 76 | struct { |
77 | struct nlmsghdr n; | |
78 | struct ifinfomsg i; | |
79 | char buf[1024]; | |
d17b136f PS |
80 | } req = { |
81 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)), | |
82 | .n.nlmsg_flags = NLM_F_REQUEST, | |
83 | .n.nlmsg_type = RTM_GETLINK, | |
84 | .i.ifi_family = preferred_family, | |
85 | .i.ifi_index = ifi->ifi_index, | |
86 | }; | |
af89576d | 87 | struct rtattr *tb[IFLA_MAX + 1]; |
88 | struct rtattr *linkinfo[IFLA_INFO_MAX+1]; | |
89 | struct rtattr *greinfo[IFLA_GRE_MAX + 1]; | |
90 | __u16 iflags = 0; | |
91 | __u16 oflags = 0; | |
56f5daac SH |
92 | unsigned int ikey = 0; |
93 | unsigned int okey = 0; | |
af89576d | 94 | struct in6_addr raddr = IN6ADDR_ANY_INIT; |
95 | struct in6_addr laddr = IN6ADDR_ANY_INIT; | |
56f5daac SH |
96 | unsigned int link = 0; |
97 | unsigned int flowinfo = 0; | |
98 | unsigned int flags = 0; | |
af89576d | 99 | __u8 hop_limit = DEFAULT_TNL_HOP_LIMIT; |
100 | __u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT; | |
0b2fbb73 TH |
101 | __u16 encaptype = 0; |
102 | __u16 encapflags = TUNNEL_ENCAP_FLAG_CSUM6; | |
103 | __u16 encapsport = 0; | |
104 | __u16 encapdport = 0; | |
af89576d | 105 | int len; |
106 | ||
107 | if (!(n->nlmsg_flags & NLM_F_CREATE)) { | |
c079e121 | 108 | if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0) { |
af89576d | 109 | get_failed: |
110 | fprintf(stderr, | |
111 | "Failed to get existing tunnel info.\n"); | |
112 | return -1; | |
113 | } | |
114 | ||
115 | len = req.n.nlmsg_len; | |
116 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
117 | if (len < 0) | |
118 | goto get_failed; | |
119 | ||
120 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(&req.i), len); | |
121 | ||
122 | if (!tb[IFLA_LINKINFO]) | |
123 | goto get_failed; | |
124 | ||
125 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
126 | ||
127 | if (!linkinfo[IFLA_INFO_DATA]) | |
128 | goto get_failed; | |
129 | ||
130 | parse_rtattr_nested(greinfo, IFLA_GRE_MAX, | |
131 | linkinfo[IFLA_INFO_DATA]); | |
132 | ||
133 | if (greinfo[IFLA_GRE_IKEY]) | |
134 | ikey = rta_getattr_u32(greinfo[IFLA_GRE_IKEY]); | |
135 | ||
136 | if (greinfo[IFLA_GRE_OKEY]) | |
137 | okey = rta_getattr_u32(greinfo[IFLA_GRE_OKEY]); | |
138 | ||
139 | if (greinfo[IFLA_GRE_IFLAGS]) | |
140 | iflags = rta_getattr_u16(greinfo[IFLA_GRE_IFLAGS]); | |
141 | ||
142 | if (greinfo[IFLA_GRE_OFLAGS]) | |
143 | oflags = rta_getattr_u16(greinfo[IFLA_GRE_OFLAGS]); | |
144 | ||
145 | if (greinfo[IFLA_GRE_LOCAL]) | |
146 | memcpy(&laddr, RTA_DATA(greinfo[IFLA_GRE_LOCAL]), sizeof(laddr)); | |
147 | ||
148 | if (greinfo[IFLA_GRE_REMOTE]) | |
149 | memcpy(&raddr, RTA_DATA(greinfo[IFLA_GRE_REMOTE]), sizeof(raddr)); | |
150 | ||
151 | if (greinfo[IFLA_GRE_TTL]) | |
152 | hop_limit = rta_getattr_u8(greinfo[IFLA_GRE_TTL]); | |
153 | ||
154 | if (greinfo[IFLA_GRE_LINK]) | |
155 | link = rta_getattr_u32(greinfo[IFLA_GRE_LINK]); | |
156 | ||
157 | if (greinfo[IFLA_GRE_ENCAP_LIMIT]) | |
158 | encap_limit = rta_getattr_u8(greinfo[IFLA_GRE_ENCAP_LIMIT]); | |
159 | ||
160 | if (greinfo[IFLA_GRE_FLOWINFO]) | |
161 | flowinfo = rta_getattr_u32(greinfo[IFLA_GRE_FLOWINFO]); | |
162 | ||
163 | if (greinfo[IFLA_GRE_FLAGS]) | |
164 | flags = rta_getattr_u32(greinfo[IFLA_GRE_FLAGS]); | |
0b2fbb73 TH |
165 | |
166 | if (greinfo[IFLA_GRE_ENCAP_TYPE]) | |
167 | encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]); | |
168 | ||
169 | if (greinfo[IFLA_GRE_ENCAP_FLAGS]) | |
170 | encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]); | |
171 | ||
172 | if (greinfo[IFLA_GRE_ENCAP_SPORT]) | |
173 | encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]); | |
174 | ||
175 | if (greinfo[IFLA_GRE_ENCAP_DPORT]) | |
176 | encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]); | |
af89576d | 177 | } |
178 | ||
179 | while (argc > 0) { | |
180 | if (!matches(*argv, "key")) { | |
56f5daac | 181 | unsigned int uval; |
af89576d | 182 | |
183 | NEXT_ARG(); | |
184 | iflags |= GRE_KEY; | |
185 | oflags |= GRE_KEY; | |
186 | if (strchr(*argv, '.')) | |
187 | uval = get_addr32(*argv); | |
188 | else { | |
189 | if (get_unsigned(&uval, *argv, 0) < 0) { | |
190 | fprintf(stderr, | |
191 | "Invalid value for \"key\"\n"); | |
192 | exit(-1); | |
193 | } | |
194 | uval = htonl(uval); | |
195 | } | |
196 | ||
197 | ikey = okey = uval; | |
198 | } else if (!matches(*argv, "ikey")) { | |
56f5daac | 199 | unsigned int uval; |
af89576d | 200 | |
201 | NEXT_ARG(); | |
202 | iflags |= GRE_KEY; | |
203 | if (strchr(*argv, '.')) | |
204 | uval = get_addr32(*argv); | |
205 | else { | |
56f5daac | 206 | if (get_unsigned(&uval, *argv, 0) < 0) { |
af89576d | 207 | fprintf(stderr, "invalid value of \"ikey\"\n"); |
208 | exit(-1); | |
209 | } | |
210 | uval = htonl(uval); | |
211 | } | |
212 | ikey = uval; | |
213 | } else if (!matches(*argv, "okey")) { | |
56f5daac | 214 | unsigned int uval; |
af89576d | 215 | |
216 | NEXT_ARG(); | |
217 | oflags |= GRE_KEY; | |
218 | if (strchr(*argv, '.')) | |
219 | uval = get_addr32(*argv); | |
220 | else { | |
56f5daac | 221 | if (get_unsigned(&uval, *argv, 0) < 0) { |
af89576d | 222 | fprintf(stderr, "invalid value of \"okey\"\n"); |
223 | exit(-1); | |
224 | } | |
225 | uval = htonl(uval); | |
226 | } | |
227 | okey = uval; | |
228 | } else if (!matches(*argv, "seq")) { | |
229 | iflags |= GRE_SEQ; | |
230 | oflags |= GRE_SEQ; | |
231 | } else if (!matches(*argv, "iseq")) { | |
232 | iflags |= GRE_SEQ; | |
233 | } else if (!matches(*argv, "oseq")) { | |
234 | oflags |= GRE_SEQ; | |
235 | } else if (!matches(*argv, "csum")) { | |
236 | iflags |= GRE_CSUM; | |
237 | oflags |= GRE_CSUM; | |
238 | } else if (!matches(*argv, "icsum")) { | |
239 | iflags |= GRE_CSUM; | |
240 | } else if (!matches(*argv, "ocsum")) { | |
241 | oflags |= GRE_CSUM; | |
242 | } else if (!matches(*argv, "remote")) { | |
243 | inet_prefix addr; | |
56f5daac | 244 | |
af89576d | 245 | NEXT_ARG(); |
246 | get_prefix(&addr, *argv, preferred_family); | |
247 | if (addr.family == AF_UNSPEC) | |
248 | invarg("\"remote\" address family is AF_UNSPEC", *argv); | |
249 | memcpy(&raddr, &addr.data, sizeof(raddr)); | |
250 | } else if (!matches(*argv, "local")) { | |
251 | inet_prefix addr; | |
56f5daac | 252 | |
af89576d | 253 | NEXT_ARG(); |
254 | get_prefix(&addr, *argv, preferred_family); | |
255 | if (addr.family == AF_UNSPEC) | |
256 | invarg("\"local\" address family is AF_UNSPEC", *argv); | |
257 | memcpy(&laddr, &addr.data, sizeof(laddr)); | |
258 | } else if (!matches(*argv, "dev")) { | |
259 | NEXT_ARG(); | |
260 | link = if_nametoindex(*argv); | |
0cb6bb51 CW |
261 | if (link == 0) { |
262 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
263 | *argv); | |
af89576d | 264 | exit(-1); |
0cb6bb51 | 265 | } |
af89576d | 266 | } else if (!matches(*argv, "ttl") || |
267 | !matches(*argv, "hoplimit")) { | |
268 | __u8 uval; | |
56f5daac | 269 | |
af89576d | 270 | NEXT_ARG(); |
271 | if (get_u8(&uval, *argv, 0)) | |
272 | invarg("invalid TTL", *argv); | |
273 | hop_limit = uval; | |
274 | } else if (!matches(*argv, "tos") || | |
275 | !matches(*argv, "tclass") || | |
276 | !matches(*argv, "dsfield")) { | |
277 | __u8 uval; | |
56f5daac | 278 | |
af89576d | 279 | NEXT_ARG(); |
280 | if (strcmp(*argv, "inherit") == 0) | |
281 | flags |= IP6_TNL_F_USE_ORIG_TCLASS; | |
282 | else { | |
283 | if (get_u8(&uval, *argv, 16)) | |
284 | invarg("invalid TClass", *argv); | |
285 | flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS; | |
286 | flags &= ~IP6_TNL_F_USE_ORIG_TCLASS; | |
287 | } | |
288 | } else if (strcmp(*argv, "flowlabel") == 0 || | |
289 | strcmp(*argv, "fl") == 0) { | |
290 | __u32 uval; | |
56f5daac | 291 | |
af89576d | 292 | NEXT_ARG(); |
293 | if (strcmp(*argv, "inherit") == 0) | |
294 | flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
295 | else { | |
296 | if (get_u32(&uval, *argv, 16)) | |
297 | invarg("invalid Flowlabel", *argv); | |
298 | if (uval > 0xFFFFF) | |
299 | invarg("invalid Flowlabel", *argv); | |
300 | flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL; | |
301 | flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
302 | } | |
303 | } else if (strcmp(*argv, "dscp") == 0) { | |
304 | NEXT_ARG(); | |
305 | if (strcmp(*argv, "inherit") != 0) | |
306 | invarg("not inherit", *argv); | |
307 | flags |= IP6_TNL_F_RCV_DSCP_COPY; | |
0b2fbb73 TH |
308 | } else if (strcmp(*argv, "noencap") == 0) { |
309 | encaptype = TUNNEL_ENCAP_NONE; | |
310 | } else if (strcmp(*argv, "encap") == 0) { | |
311 | NEXT_ARG(); | |
312 | if (strcmp(*argv, "fou") == 0) | |
313 | encaptype = TUNNEL_ENCAP_FOU; | |
314 | else if (strcmp(*argv, "gue") == 0) | |
315 | encaptype = TUNNEL_ENCAP_GUE; | |
316 | else if (strcmp(*argv, "none") == 0) | |
317 | encaptype = TUNNEL_ENCAP_NONE; | |
318 | else | |
319 | invarg("Invalid encap type.", *argv); | |
320 | } else if (strcmp(*argv, "encap-sport") == 0) { | |
321 | NEXT_ARG(); | |
322 | if (strcmp(*argv, "auto") == 0) | |
323 | encapsport = 0; | |
324 | else if (get_u16(&encapsport, *argv, 0)) | |
325 | invarg("Invalid source port.", *argv); | |
326 | } else if (strcmp(*argv, "encap-dport") == 0) { | |
327 | NEXT_ARG(); | |
328 | if (get_u16(&encapdport, *argv, 0)) | |
329 | invarg("Invalid destination port.", *argv); | |
330 | } else if (strcmp(*argv, "encap-csum") == 0) { | |
331 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM; | |
332 | } else if (strcmp(*argv, "noencap-csum") == 0) { | |
333 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM; | |
334 | } else if (strcmp(*argv, "encap-udp6-csum") == 0) { | |
335 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM6; | |
336 | } else if (strcmp(*argv, "noencap-udp6-csum") == 0) { | |
337 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6; | |
338 | } else if (strcmp(*argv, "encap-remcsum") == 0) { | |
339 | encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM; | |
340 | } else if (strcmp(*argv, "noencap-remcsum") == 0) { | |
341 | encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM; | |
af89576d | 342 | } else |
343 | usage(); | |
344 | argc--; argv++; | |
345 | } | |
346 | ||
347 | addattr32(n, 1024, IFLA_GRE_IKEY, ikey); | |
348 | addattr32(n, 1024, IFLA_GRE_OKEY, okey); | |
349 | addattr_l(n, 1024, IFLA_GRE_IFLAGS, &iflags, 2); | |
350 | addattr_l(n, 1024, IFLA_GRE_OFLAGS, &oflags, 2); | |
351 | addattr_l(n, 1024, IFLA_GRE_LOCAL, &laddr, sizeof(laddr)); | |
352 | addattr_l(n, 1024, IFLA_GRE_REMOTE, &raddr, sizeof(raddr)); | |
353 | if (link) | |
354 | addattr32(n, 1024, IFLA_GRE_LINK, link); | |
355 | addattr_l(n, 1024, IFLA_GRE_TTL, &hop_limit, 1); | |
356 | addattr_l(n, 1024, IFLA_GRE_ENCAP_LIMIT, &encap_limit, 1); | |
357 | addattr_l(n, 1024, IFLA_GRE_FLOWINFO, &flowinfo, 4); | |
358 | addattr_l(n, 1024, IFLA_GRE_FLAGS, &flowinfo, 4); | |
359 | ||
0b2fbb73 TH |
360 | addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype); |
361 | addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags); | |
362 | addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport)); | |
363 | addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport)); | |
364 | ||
af89576d | 365 | return 0; |
366 | } | |
367 | ||
368 | static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
369 | { | |
af89576d | 370 | char s2[64]; |
371 | const char *local = "any"; | |
372 | const char *remote = "any"; | |
56f5daac SH |
373 | unsigned int iflags = 0; |
374 | unsigned int oflags = 0; | |
375 | unsigned int flags = 0; | |
376 | unsigned int flowinfo = 0; | |
af89576d | 377 | struct in6_addr in6_addr_any = IN6ADDR_ANY_INIT; |
378 | ||
379 | if (!tb) | |
380 | return; | |
381 | ||
382 | if (tb[IFLA_GRE_FLAGS]) | |
383 | flags = rta_getattr_u32(tb[IFLA_GRE_FLAGS]); | |
384 | ||
385 | if (tb[IFLA_GRE_FLOWINFO]) | |
386 | flags = rta_getattr_u32(tb[IFLA_GRE_FLOWINFO]); | |
387 | ||
388 | if (tb[IFLA_GRE_REMOTE]) { | |
389 | struct in6_addr addr; | |
56f5daac | 390 | |
af89576d | 391 | memcpy(&addr, RTA_DATA(tb[IFLA_GRE_REMOTE]), sizeof(addr)); |
392 | ||
393 | if (memcmp(&addr, &in6_addr_any, sizeof(addr))) | |
a418e451 | 394 | remote = format_host(AF_INET6, sizeof(addr), &addr); |
af89576d | 395 | } |
396 | ||
397 | fprintf(f, "remote %s ", remote); | |
398 | ||
399 | if (tb[IFLA_GRE_LOCAL]) { | |
400 | struct in6_addr addr; | |
56f5daac | 401 | |
af89576d | 402 | memcpy(&addr, RTA_DATA(tb[IFLA_GRE_LOCAL]), sizeof(addr)); |
403 | ||
404 | if (memcmp(&addr, &in6_addr_any, sizeof(addr))) | |
a418e451 | 405 | local = format_host(AF_INET6, sizeof(addr), &addr); |
af89576d | 406 | } |
407 | ||
408 | fprintf(f, "local %s ", local); | |
409 | ||
410 | if (tb[IFLA_GRE_LINK] && rta_getattr_u32(tb[IFLA_GRE_LINK])) { | |
56f5daac | 411 | unsigned int link = rta_getattr_u32(tb[IFLA_GRE_LINK]); |
af89576d | 412 | const char *n = if_indextoname(link, s2); |
413 | ||
414 | if (n) | |
415 | fprintf(f, "dev %s ", n); | |
416 | else | |
417 | fprintf(f, "dev %u ", link); | |
418 | } | |
419 | ||
420 | if (tb[IFLA_GRE_TTL] && rta_getattr_u8(tb[IFLA_GRE_TTL])) | |
421 | fprintf(f, "hoplimit %d ", rta_getattr_u8(tb[IFLA_GRE_TTL])); | |
422 | ||
423 | if (flags & IP6_TNL_F_IGN_ENCAP_LIMIT) | |
424 | fprintf(f, "encaplimit none "); | |
425 | else if (tb[IFLA_GRE_ENCAP_LIMIT]) { | |
426 | int encap_limit = rta_getattr_u8(tb[IFLA_GRE_ENCAP_LIMIT]); | |
427 | ||
428 | fprintf(f, "encaplimit %d ", encap_limit); | |
429 | } | |
430 | ||
431 | if (flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) | |
432 | fprintf(f, "flowlabel inherit "); | |
433 | else | |
434 | fprintf(f, "flowlabel 0x%05x ", ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); | |
435 | ||
436 | if (flags & IP6_TNL_F_RCV_DSCP_COPY) | |
437 | fprintf(f, "dscp inherit "); | |
438 | ||
439 | if (tb[IFLA_GRE_IFLAGS]) | |
440 | iflags = rta_getattr_u16(tb[IFLA_GRE_IFLAGS]); | |
441 | ||
442 | if (tb[IFLA_GRE_OFLAGS]) | |
443 | oflags = rta_getattr_u16(tb[IFLA_GRE_OFLAGS]); | |
444 | ||
445 | if ((iflags & GRE_KEY) && tb[IFLA_GRE_IKEY]) { | |
446 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_IKEY]), s2, sizeof(s2)); | |
447 | fprintf(f, "ikey %s ", s2); | |
448 | } | |
449 | ||
450 | if ((oflags & GRE_KEY) && tb[IFLA_GRE_OKEY]) { | |
451 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_OKEY]), s2, sizeof(s2)); | |
452 | fprintf(f, "okey %s ", s2); | |
453 | } | |
454 | ||
455 | if (iflags & GRE_SEQ) | |
456 | fputs("iseq ", f); | |
457 | if (oflags & GRE_SEQ) | |
458 | fputs("oseq ", f); | |
459 | if (iflags & GRE_CSUM) | |
460 | fputs("icsum ", f); | |
461 | if (oflags & GRE_CSUM) | |
462 | fputs("ocsum ", f); | |
0b2fbb73 TH |
463 | |
464 | if (tb[IFLA_GRE_ENCAP_TYPE] && | |
465 | rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) { | |
466 | __u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]); | |
467 | __u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]); | |
468 | __u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]); | |
469 | __u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]); | |
470 | ||
471 | fputs("encap ", f); | |
472 | switch (type) { | |
473 | case TUNNEL_ENCAP_FOU: | |
474 | fputs("fou ", f); | |
475 | break; | |
476 | case TUNNEL_ENCAP_GUE: | |
477 | fputs("gue ", f); | |
478 | break; | |
479 | default: | |
480 | fputs("unknown ", f); | |
481 | break; | |
482 | } | |
483 | ||
484 | if (sport == 0) | |
485 | fputs("encap-sport auto ", f); | |
486 | else | |
487 | fprintf(f, "encap-sport %u", ntohs(sport)); | |
488 | ||
489 | fprintf(f, "encap-dport %u ", ntohs(dport)); | |
490 | ||
491 | if (flags & TUNNEL_ENCAP_FLAG_CSUM) | |
492 | fputs("encap-csum ", f); | |
493 | else | |
494 | fputs("noencap-csum ", f); | |
495 | ||
496 | if (flags & TUNNEL_ENCAP_FLAG_CSUM6) | |
497 | fputs("encap-csum6 ", f); | |
498 | else | |
499 | fputs("noencap-csum6 ", f); | |
500 | ||
501 | if (flags & TUNNEL_ENCAP_FLAG_REMCSUM) | |
502 | fputs("encap-remcsum ", f); | |
503 | else | |
504 | fputs("noencap-remcsum ", f); | |
505 | } | |
af89576d | 506 | } |
507 | ||
561e650e | 508 | static void gre_print_help(struct link_util *lu, int argc, char **argv, |
509 | FILE *f) | |
510 | { | |
511 | print_usage(f); | |
512 | } | |
513 | ||
af89576d | 514 | struct link_util ip6gre_link_util = { |
515 | .id = "ip6gre", | |
516 | .maxattr = IFLA_GRE_MAX, | |
517 | .parse_opt = gre_parse_opt, | |
518 | .print_opt = gre_print_opt, | |
561e650e | 519 | .print_help = gre_print_help, |
af89576d | 520 | }; |
521 | ||
522 | struct link_util ip6gretap_link_util = { | |
523 | .id = "ip6gretap", | |
524 | .maxattr = IFLA_GRE_MAX, | |
525 | .parse_opt = gre_parse_opt, | |
526 | .print_opt = gre_print_opt, | |
561e650e | 527 | .print_help = gre_print_help, |
af89576d | 528 | }; |