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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" | |
ad4b1425 | 46 | " [ fwmark MARK ]\n" |
8b471354 PS |
47 | " [ dev PHYS_DEV ]\n" |
48 | " [ noencap ]\n" | |
49 | " [ encap { fou | gue | none } ]\n" | |
50 | " [ encap-sport PORT ]\n" | |
51 | " [ encap-dport PORT ]\n" | |
52 | " [ [no]encap-csum ]\n" | |
53 | " [ [no]encap-csum6 ]\n" | |
54 | " [ [no]encap-remcsum ]\n" | |
55 | "\n" | |
56 | "Where: ADDR := IPV6_ADDRESS\n" | |
57 | " TTL := { 0..255 } (default=%d)\n" | |
58 | " KEY := { DOTTED_QUAD | NUMBER }\n" | |
59 | " ELIM := { none | 0..255 }(default=%d)\n" | |
60 | " TCLASS := { 0x0..0xff | inherit }\n" | |
ad4b1425 CG |
61 | " FLOWLABEL := { 0x0..0xfffff | inherit }\n" |
62 | " MARK := { 0x0..0xffffffff | inherit }\n", | |
8b471354 PS |
63 | DEFAULT_TNL_HOP_LIMIT, IPV6_DEFAULT_TNL_ENCAP_LIMIT |
64 | ); | |
561e650e | 65 | } |
66 | ||
67 | static void usage(void) __attribute__((noreturn)); | |
68 | static void usage(void) | |
69 | { | |
70 | print_usage(stderr); | |
af89576d | 71 | exit(-1); |
72 | } | |
73 | ||
74 | static int gre_parse_opt(struct link_util *lu, int argc, char **argv, | |
75 | struct nlmsghdr *n) | |
76 | { | |
d17b136f | 77 | struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1); |
af89576d | 78 | struct { |
79 | struct nlmsghdr n; | |
80 | struct ifinfomsg i; | |
81 | char buf[1024]; | |
d17b136f PS |
82 | } req = { |
83 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)), | |
84 | .n.nlmsg_flags = NLM_F_REQUEST, | |
85 | .n.nlmsg_type = RTM_GETLINK, | |
86 | .i.ifi_family = preferred_family, | |
87 | .i.ifi_index = ifi->ifi_index, | |
88 | }; | |
af89576d | 89 | struct rtattr *tb[IFLA_MAX + 1]; |
90 | struct rtattr *linkinfo[IFLA_INFO_MAX+1]; | |
91 | struct rtattr *greinfo[IFLA_GRE_MAX + 1]; | |
92 | __u16 iflags = 0; | |
93 | __u16 oflags = 0; | |
56f5daac SH |
94 | unsigned int ikey = 0; |
95 | unsigned int okey = 0; | |
af89576d | 96 | struct in6_addr raddr = IN6ADDR_ANY_INIT; |
97 | struct in6_addr laddr = IN6ADDR_ANY_INIT; | |
56f5daac SH |
98 | unsigned int link = 0; |
99 | unsigned int flowinfo = 0; | |
100 | unsigned int flags = 0; | |
af89576d | 101 | __u8 hop_limit = DEFAULT_TNL_HOP_LIMIT; |
102 | __u8 encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT; | |
0b2fbb73 TH |
103 | __u16 encaptype = 0; |
104 | __u16 encapflags = TUNNEL_ENCAP_FLAG_CSUM6; | |
105 | __u16 encapsport = 0; | |
106 | __u16 encapdport = 0; | |
af89576d | 107 | int len; |
ad4b1425 | 108 | __u32 fwmark = 0; |
af89576d | 109 | |
110 | if (!(n->nlmsg_flags & NLM_F_CREATE)) { | |
c079e121 | 111 | if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0) { |
af89576d | 112 | get_failed: |
113 | fprintf(stderr, | |
114 | "Failed to get existing tunnel info.\n"); | |
115 | return -1; | |
116 | } | |
117 | ||
118 | len = req.n.nlmsg_len; | |
119 | len -= NLMSG_LENGTH(sizeof(*ifi)); | |
120 | if (len < 0) | |
121 | goto get_failed; | |
122 | ||
123 | parse_rtattr(tb, IFLA_MAX, IFLA_RTA(&req.i), len); | |
124 | ||
125 | if (!tb[IFLA_LINKINFO]) | |
126 | goto get_failed; | |
127 | ||
128 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
129 | ||
130 | if (!linkinfo[IFLA_INFO_DATA]) | |
131 | goto get_failed; | |
132 | ||
133 | parse_rtattr_nested(greinfo, IFLA_GRE_MAX, | |
134 | linkinfo[IFLA_INFO_DATA]); | |
135 | ||
136 | if (greinfo[IFLA_GRE_IKEY]) | |
137 | ikey = rta_getattr_u32(greinfo[IFLA_GRE_IKEY]); | |
138 | ||
139 | if (greinfo[IFLA_GRE_OKEY]) | |
140 | okey = rta_getattr_u32(greinfo[IFLA_GRE_OKEY]); | |
141 | ||
142 | if (greinfo[IFLA_GRE_IFLAGS]) | |
143 | iflags = rta_getattr_u16(greinfo[IFLA_GRE_IFLAGS]); | |
144 | ||
145 | if (greinfo[IFLA_GRE_OFLAGS]) | |
146 | oflags = rta_getattr_u16(greinfo[IFLA_GRE_OFLAGS]); | |
147 | ||
148 | if (greinfo[IFLA_GRE_LOCAL]) | |
149 | memcpy(&laddr, RTA_DATA(greinfo[IFLA_GRE_LOCAL]), sizeof(laddr)); | |
150 | ||
151 | if (greinfo[IFLA_GRE_REMOTE]) | |
152 | memcpy(&raddr, RTA_DATA(greinfo[IFLA_GRE_REMOTE]), sizeof(raddr)); | |
153 | ||
154 | if (greinfo[IFLA_GRE_TTL]) | |
155 | hop_limit = rta_getattr_u8(greinfo[IFLA_GRE_TTL]); | |
156 | ||
157 | if (greinfo[IFLA_GRE_LINK]) | |
158 | link = rta_getattr_u32(greinfo[IFLA_GRE_LINK]); | |
159 | ||
160 | if (greinfo[IFLA_GRE_ENCAP_LIMIT]) | |
161 | encap_limit = rta_getattr_u8(greinfo[IFLA_GRE_ENCAP_LIMIT]); | |
162 | ||
163 | if (greinfo[IFLA_GRE_FLOWINFO]) | |
164 | flowinfo = rta_getattr_u32(greinfo[IFLA_GRE_FLOWINFO]); | |
165 | ||
166 | if (greinfo[IFLA_GRE_FLAGS]) | |
167 | flags = rta_getattr_u32(greinfo[IFLA_GRE_FLAGS]); | |
0b2fbb73 TH |
168 | |
169 | if (greinfo[IFLA_GRE_ENCAP_TYPE]) | |
170 | encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]); | |
171 | ||
172 | if (greinfo[IFLA_GRE_ENCAP_FLAGS]) | |
173 | encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]); | |
174 | ||
175 | if (greinfo[IFLA_GRE_ENCAP_SPORT]) | |
176 | encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]); | |
177 | ||
178 | if (greinfo[IFLA_GRE_ENCAP_DPORT]) | |
179 | encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]); | |
ad4b1425 CG |
180 | |
181 | if (greinfo[IFLA_GRE_FWMARK]) | |
182 | fwmark = rta_getattr_u32(greinfo[IFLA_GRE_FWMARK]); | |
af89576d | 183 | } |
184 | ||
185 | while (argc > 0) { | |
186 | if (!matches(*argv, "key")) { | |
56f5daac | 187 | unsigned int uval; |
af89576d | 188 | |
189 | NEXT_ARG(); | |
190 | iflags |= GRE_KEY; | |
191 | oflags |= GRE_KEY; | |
192 | if (strchr(*argv, '.')) | |
193 | uval = get_addr32(*argv); | |
194 | else { | |
195 | if (get_unsigned(&uval, *argv, 0) < 0) { | |
196 | fprintf(stderr, | |
197 | "Invalid value for \"key\"\n"); | |
198 | exit(-1); | |
199 | } | |
200 | uval = htonl(uval); | |
201 | } | |
202 | ||
203 | ikey = okey = uval; | |
204 | } else if (!matches(*argv, "ikey")) { | |
56f5daac | 205 | unsigned int uval; |
af89576d | 206 | |
207 | NEXT_ARG(); | |
208 | iflags |= GRE_KEY; | |
209 | if (strchr(*argv, '.')) | |
210 | uval = get_addr32(*argv); | |
211 | else { | |
56f5daac | 212 | if (get_unsigned(&uval, *argv, 0) < 0) { |
af89576d | 213 | fprintf(stderr, "invalid value of \"ikey\"\n"); |
214 | exit(-1); | |
215 | } | |
216 | uval = htonl(uval); | |
217 | } | |
218 | ikey = uval; | |
219 | } else if (!matches(*argv, "okey")) { | |
56f5daac | 220 | unsigned int uval; |
af89576d | 221 | |
222 | NEXT_ARG(); | |
223 | oflags |= GRE_KEY; | |
224 | if (strchr(*argv, '.')) | |
225 | uval = get_addr32(*argv); | |
226 | else { | |
56f5daac | 227 | if (get_unsigned(&uval, *argv, 0) < 0) { |
af89576d | 228 | fprintf(stderr, "invalid value of \"okey\"\n"); |
229 | exit(-1); | |
230 | } | |
231 | uval = htonl(uval); | |
232 | } | |
233 | okey = uval; | |
234 | } else if (!matches(*argv, "seq")) { | |
235 | iflags |= GRE_SEQ; | |
236 | oflags |= GRE_SEQ; | |
237 | } else if (!matches(*argv, "iseq")) { | |
238 | iflags |= GRE_SEQ; | |
239 | } else if (!matches(*argv, "oseq")) { | |
240 | oflags |= GRE_SEQ; | |
241 | } else if (!matches(*argv, "csum")) { | |
242 | iflags |= GRE_CSUM; | |
243 | oflags |= GRE_CSUM; | |
244 | } else if (!matches(*argv, "icsum")) { | |
245 | iflags |= GRE_CSUM; | |
246 | } else if (!matches(*argv, "ocsum")) { | |
247 | oflags |= GRE_CSUM; | |
248 | } else if (!matches(*argv, "remote")) { | |
249 | inet_prefix addr; | |
56f5daac | 250 | |
af89576d | 251 | NEXT_ARG(); |
252 | get_prefix(&addr, *argv, preferred_family); | |
253 | if (addr.family == AF_UNSPEC) | |
254 | invarg("\"remote\" address family is AF_UNSPEC", *argv); | |
255 | memcpy(&raddr, &addr.data, sizeof(raddr)); | |
256 | } else if (!matches(*argv, "local")) { | |
257 | inet_prefix addr; | |
56f5daac | 258 | |
af89576d | 259 | NEXT_ARG(); |
260 | get_prefix(&addr, *argv, preferred_family); | |
261 | if (addr.family == AF_UNSPEC) | |
262 | invarg("\"local\" address family is AF_UNSPEC", *argv); | |
263 | memcpy(&laddr, &addr.data, sizeof(laddr)); | |
264 | } else if (!matches(*argv, "dev")) { | |
265 | NEXT_ARG(); | |
266 | link = if_nametoindex(*argv); | |
0cb6bb51 CW |
267 | if (link == 0) { |
268 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
269 | *argv); | |
af89576d | 270 | exit(-1); |
0cb6bb51 | 271 | } |
af89576d | 272 | } else if (!matches(*argv, "ttl") || |
273 | !matches(*argv, "hoplimit")) { | |
274 | __u8 uval; | |
56f5daac | 275 | |
af89576d | 276 | NEXT_ARG(); |
277 | if (get_u8(&uval, *argv, 0)) | |
278 | invarg("invalid TTL", *argv); | |
279 | hop_limit = uval; | |
280 | } else if (!matches(*argv, "tos") || | |
281 | !matches(*argv, "tclass") || | |
282 | !matches(*argv, "dsfield")) { | |
283 | __u8 uval; | |
56f5daac | 284 | |
af89576d | 285 | NEXT_ARG(); |
286 | if (strcmp(*argv, "inherit") == 0) | |
287 | flags |= IP6_TNL_F_USE_ORIG_TCLASS; | |
288 | else { | |
289 | if (get_u8(&uval, *argv, 16)) | |
290 | invarg("invalid TClass", *argv); | |
291 | flowinfo |= htonl((__u32)uval << 20) & IP6_FLOWINFO_TCLASS; | |
292 | flags &= ~IP6_TNL_F_USE_ORIG_TCLASS; | |
293 | } | |
294 | } else if (strcmp(*argv, "flowlabel") == 0 || | |
295 | strcmp(*argv, "fl") == 0) { | |
296 | __u32 uval; | |
56f5daac | 297 | |
af89576d | 298 | NEXT_ARG(); |
299 | if (strcmp(*argv, "inherit") == 0) | |
300 | flags |= IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
301 | else { | |
302 | if (get_u32(&uval, *argv, 16)) | |
303 | invarg("invalid Flowlabel", *argv); | |
304 | if (uval > 0xFFFFF) | |
305 | invarg("invalid Flowlabel", *argv); | |
306 | flowinfo |= htonl(uval) & IP6_FLOWINFO_FLOWLABEL; | |
307 | flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL; | |
308 | } | |
309 | } else if (strcmp(*argv, "dscp") == 0) { | |
310 | NEXT_ARG(); | |
311 | if (strcmp(*argv, "inherit") != 0) | |
312 | invarg("not inherit", *argv); | |
313 | flags |= IP6_TNL_F_RCV_DSCP_COPY; | |
0b2fbb73 TH |
314 | } else if (strcmp(*argv, "noencap") == 0) { |
315 | encaptype = TUNNEL_ENCAP_NONE; | |
316 | } else if (strcmp(*argv, "encap") == 0) { | |
317 | NEXT_ARG(); | |
318 | if (strcmp(*argv, "fou") == 0) | |
319 | encaptype = TUNNEL_ENCAP_FOU; | |
320 | else if (strcmp(*argv, "gue") == 0) | |
321 | encaptype = TUNNEL_ENCAP_GUE; | |
322 | else if (strcmp(*argv, "none") == 0) | |
323 | encaptype = TUNNEL_ENCAP_NONE; | |
324 | else | |
325 | invarg("Invalid encap type.", *argv); | |
326 | } else if (strcmp(*argv, "encap-sport") == 0) { | |
327 | NEXT_ARG(); | |
328 | if (strcmp(*argv, "auto") == 0) | |
329 | encapsport = 0; | |
330 | else if (get_u16(&encapsport, *argv, 0)) | |
331 | invarg("Invalid source port.", *argv); | |
332 | } else if (strcmp(*argv, "encap-dport") == 0) { | |
333 | NEXT_ARG(); | |
334 | if (get_u16(&encapdport, *argv, 0)) | |
335 | invarg("Invalid destination port.", *argv); | |
336 | } else if (strcmp(*argv, "encap-csum") == 0) { | |
337 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM; | |
338 | } else if (strcmp(*argv, "noencap-csum") == 0) { | |
339 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM; | |
340 | } else if (strcmp(*argv, "encap-udp6-csum") == 0) { | |
341 | encapflags |= TUNNEL_ENCAP_FLAG_CSUM6; | |
342 | } else if (strcmp(*argv, "noencap-udp6-csum") == 0) { | |
343 | encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6; | |
344 | } else if (strcmp(*argv, "encap-remcsum") == 0) { | |
345 | encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM; | |
346 | } else if (strcmp(*argv, "noencap-remcsum") == 0) { | |
347 | encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM; | |
ad4b1425 CG |
348 | } else if (strcmp(*argv, "fwmark") == 0) { |
349 | NEXT_ARG(); | |
350 | if (strcmp(*argv, "inherit") == 0) { | |
351 | flags |= IP6_TNL_F_USE_ORIG_FWMARK; | |
352 | fwmark = 0; | |
353 | } else { | |
354 | if (get_u32(&fwmark, *argv, 0)) | |
355 | invarg("invalid fwmark\n", *argv); | |
356 | flags &= ~IP6_TNL_F_USE_ORIG_FWMARK; | |
357 | } | |
a11b7b71 ND |
358 | } else if (strcmp(*argv, "encaplimit") == 0) { |
359 | NEXT_ARG(); | |
360 | if (strcmp(*argv, "none") == 0) { | |
361 | flags |= IP6_TNL_F_IGN_ENCAP_LIMIT; | |
362 | } else { | |
363 | __u8 uval; | |
364 | ||
365 | if (get_u8(&uval, *argv, 0) < -1) | |
366 | invarg("invalid ELIM", *argv); | |
367 | encap_limit = uval; | |
368 | flags &= ~IP6_TNL_F_IGN_ENCAP_LIMIT; | |
369 | } | |
af89576d | 370 | } else |
371 | usage(); | |
372 | argc--; argv++; | |
373 | } | |
374 | ||
375 | addattr32(n, 1024, IFLA_GRE_IKEY, ikey); | |
376 | addattr32(n, 1024, IFLA_GRE_OKEY, okey); | |
377 | addattr_l(n, 1024, IFLA_GRE_IFLAGS, &iflags, 2); | |
378 | addattr_l(n, 1024, IFLA_GRE_OFLAGS, &oflags, 2); | |
379 | addattr_l(n, 1024, IFLA_GRE_LOCAL, &laddr, sizeof(laddr)); | |
380 | addattr_l(n, 1024, IFLA_GRE_REMOTE, &raddr, sizeof(raddr)); | |
381 | if (link) | |
382 | addattr32(n, 1024, IFLA_GRE_LINK, link); | |
383 | addattr_l(n, 1024, IFLA_GRE_TTL, &hop_limit, 1); | |
384 | addattr_l(n, 1024, IFLA_GRE_ENCAP_LIMIT, &encap_limit, 1); | |
385 | addattr_l(n, 1024, IFLA_GRE_FLOWINFO, &flowinfo, 4); | |
35893864 | 386 | addattr32(n, 1024, IFLA_GRE_FLAGS, flags); |
ad4b1425 | 387 | addattr32(n, 1024, IFLA_GRE_FWMARK, fwmark); |
af89576d | 388 | |
0b2fbb73 TH |
389 | addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype); |
390 | addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags); | |
391 | addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport)); | |
392 | addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport)); | |
393 | ||
af89576d | 394 | return 0; |
395 | } | |
396 | ||
397 | static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
398 | { | |
af89576d | 399 | char s2[64]; |
400 | const char *local = "any"; | |
401 | const char *remote = "any"; | |
56f5daac SH |
402 | unsigned int iflags = 0; |
403 | unsigned int oflags = 0; | |
404 | unsigned int flags = 0; | |
405 | unsigned int flowinfo = 0; | |
af89576d | 406 | struct in6_addr in6_addr_any = IN6ADDR_ANY_INIT; |
407 | ||
408 | if (!tb) | |
409 | return; | |
410 | ||
411 | if (tb[IFLA_GRE_FLAGS]) | |
412 | flags = rta_getattr_u32(tb[IFLA_GRE_FLAGS]); | |
413 | ||
414 | if (tb[IFLA_GRE_FLOWINFO]) | |
35893864 | 415 | flowinfo = rta_getattr_u32(tb[IFLA_GRE_FLOWINFO]); |
af89576d | 416 | |
417 | if (tb[IFLA_GRE_REMOTE]) { | |
418 | struct in6_addr addr; | |
56f5daac | 419 | |
af89576d | 420 | memcpy(&addr, RTA_DATA(tb[IFLA_GRE_REMOTE]), sizeof(addr)); |
421 | ||
422 | if (memcmp(&addr, &in6_addr_any, sizeof(addr))) | |
a418e451 | 423 | remote = format_host(AF_INET6, sizeof(addr), &addr); |
af89576d | 424 | } |
425 | ||
6856fb65 | 426 | print_string(PRINT_ANY, "remote", "remote %s ", remote); |
af89576d | 427 | |
428 | if (tb[IFLA_GRE_LOCAL]) { | |
429 | struct in6_addr addr; | |
56f5daac | 430 | |
af89576d | 431 | memcpy(&addr, RTA_DATA(tb[IFLA_GRE_LOCAL]), sizeof(addr)); |
432 | ||
433 | if (memcmp(&addr, &in6_addr_any, sizeof(addr))) | |
a418e451 | 434 | local = format_host(AF_INET6, sizeof(addr), &addr); |
af89576d | 435 | } |
436 | ||
6856fb65 | 437 | print_string(PRINT_ANY, "local", "local %s ", local); |
af89576d | 438 | |
439 | if (tb[IFLA_GRE_LINK] && rta_getattr_u32(tb[IFLA_GRE_LINK])) { | |
56f5daac | 440 | unsigned int link = rta_getattr_u32(tb[IFLA_GRE_LINK]); |
af89576d | 441 | const char *n = if_indextoname(link, s2); |
442 | ||
443 | if (n) | |
6856fb65 | 444 | print_string(PRINT_ANY, "link", "dev %s ", n); |
af89576d | 445 | else |
6856fb65 | 446 | print_uint(PRINT_ANY, "link_index", "dev %u ", link); |
af89576d | 447 | } |
448 | ||
6856fb65 JF |
449 | if (tb[IFLA_GRE_TTL]) { |
450 | __u8 ttl = rta_getattr_u8(tb[IFLA_GRE_TTL]); | |
451 | ||
452 | if (ttl) | |
453 | print_int(PRINT_ANY, "ttl", "hoplimit %d ", ttl); | |
454 | else | |
455 | print_int(PRINT_JSON, "ttl", NULL, ttl); | |
456 | } | |
af89576d | 457 | |
458 | if (flags & IP6_TNL_F_IGN_ENCAP_LIMIT) | |
6856fb65 JF |
459 | print_bool(PRINT_ANY, |
460 | "ip6_tnl_f_ign_encap_limit", | |
461 | "encaplimit none ", | |
462 | true); | |
af89576d | 463 | else if (tb[IFLA_GRE_ENCAP_LIMIT]) { |
464 | int encap_limit = rta_getattr_u8(tb[IFLA_GRE_ENCAP_LIMIT]); | |
465 | ||
6856fb65 JF |
466 | print_int(PRINT_ANY, |
467 | "encap_limit", | |
468 | "encaplimit %d ", | |
469 | encap_limit); | |
af89576d | 470 | } |
471 | ||
6856fb65 JF |
472 | if (flags & IP6_TNL_F_USE_ORIG_FLOWLABEL) { |
473 | print_bool(PRINT_ANY, | |
474 | "ip6_tnl_f_use_orig_flowlabel", | |
475 | "flowlabel inherit ", | |
476 | true); | |
477 | } else { | |
478 | if (is_json_context()) { | |
479 | SPRINT_BUF(b1); | |
480 | ||
481 | snprintf(b1, sizeof(b1), "0x%05x", | |
482 | ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); | |
483 | print_string(PRINT_JSON, "flowlabel", NULL, b1); | |
484 | ||
485 | } else { | |
486 | fprintf(f, "flowlabel 0x%05x ", | |
487 | ntohl(flowinfo & IP6_FLOWINFO_FLOWLABEL)); | |
488 | } | |
489 | } | |
af89576d | 490 | |
491 | if (flags & IP6_TNL_F_RCV_DSCP_COPY) | |
6856fb65 JF |
492 | print_bool(PRINT_ANY, |
493 | "ip6_tnl_f_rcv_dscp_copy", | |
494 | "dscp inherit ", | |
495 | true); | |
af89576d | 496 | |
497 | if (tb[IFLA_GRE_IFLAGS]) | |
498 | iflags = rta_getattr_u16(tb[IFLA_GRE_IFLAGS]); | |
499 | ||
500 | if (tb[IFLA_GRE_OFLAGS]) | |
501 | oflags = rta_getattr_u16(tb[IFLA_GRE_OFLAGS]); | |
502 | ||
503 | if ((iflags & GRE_KEY) && tb[IFLA_GRE_IKEY]) { | |
504 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_IKEY]), s2, sizeof(s2)); | |
6856fb65 | 505 | print_string(PRINT_ANY, "ikey", "ikey %s ", s2); |
af89576d | 506 | } |
507 | ||
508 | if ((oflags & GRE_KEY) && tb[IFLA_GRE_OKEY]) { | |
509 | inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_OKEY]), s2, sizeof(s2)); | |
6856fb65 | 510 | print_string(PRINT_ANY, "okey", "okey %s ", s2); |
af89576d | 511 | } |
512 | ||
513 | if (iflags & GRE_SEQ) | |
6856fb65 | 514 | print_bool(PRINT_ANY, "iseq", "iseq ", true); |
af89576d | 515 | if (oflags & GRE_SEQ) |
6856fb65 | 516 | print_bool(PRINT_ANY, "oseq", "oseq ", true); |
af89576d | 517 | if (iflags & GRE_CSUM) |
6856fb65 | 518 | print_bool(PRINT_ANY, "icsum", "icsum ", true); |
af89576d | 519 | if (oflags & GRE_CSUM) |
6856fb65 | 520 | print_bool(PRINT_ANY, "ocsum", "ocsum ", true); |
0b2fbb73 | 521 | |
ad4b1425 | 522 | if (flags & IP6_TNL_F_USE_ORIG_FWMARK) |
6856fb65 JF |
523 | print_bool(PRINT_ANY, |
524 | "ip6_tnl_f_use_orig_fwmark", | |
525 | "fwmark inherit ", | |
526 | true); | |
527 | else if (tb[IFLA_GRE_FWMARK]) { | |
528 | __u32 fwmark = rta_getattr_u32(tb[IFLA_GRE_FWMARK]); | |
529 | ||
530 | if (fwmark) { | |
531 | snprintf(s2, sizeof(s2), "0x%x", fwmark); | |
532 | ||
533 | print_string(PRINT_ANY, "fwmark", "fwmark %s ", s2); | |
534 | } | |
535 | } | |
ad4b1425 | 536 | |
0b2fbb73 TH |
537 | if (tb[IFLA_GRE_ENCAP_TYPE] && |
538 | rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]) != TUNNEL_ENCAP_NONE) { | |
539 | __u16 type = rta_getattr_u16(tb[IFLA_GRE_ENCAP_TYPE]); | |
540 | __u16 flags = rta_getattr_u16(tb[IFLA_GRE_ENCAP_FLAGS]); | |
541 | __u16 sport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_SPORT]); | |
542 | __u16 dport = rta_getattr_u16(tb[IFLA_GRE_ENCAP_DPORT]); | |
543 | ||
6856fb65 JF |
544 | open_json_object("encap"); |
545 | ||
546 | print_string(PRINT_FP, NULL, "encap ", NULL); | |
0b2fbb73 TH |
547 | switch (type) { |
548 | case TUNNEL_ENCAP_FOU: | |
6856fb65 | 549 | print_string(PRINT_ANY, "type", "%s ", "fou"); |
0b2fbb73 TH |
550 | break; |
551 | case TUNNEL_ENCAP_GUE: | |
6856fb65 | 552 | print_string(PRINT_ANY, "type", "%s ", "gue"); |
0b2fbb73 TH |
553 | break; |
554 | default: | |
6856fb65 | 555 | print_null(PRINT_ANY, "type", "unknown ", NULL); |
0b2fbb73 TH |
556 | break; |
557 | } | |
558 | ||
6856fb65 JF |
559 | if (is_json_context()) { |
560 | print_uint(PRINT_JSON, | |
561 | "sport", | |
562 | NULL, | |
563 | sport ? ntohs(sport) : 0); | |
564 | print_uint(PRINT_JSON, "dport", NULL, ntohs(dport)); | |
565 | print_bool(PRINT_JSON, "csum", NULL, | |
566 | flags & TUNNEL_ENCAP_FLAG_CSUM); | |
567 | print_bool(PRINT_JSON, "csum6", NULL, | |
568 | flags & TUNNEL_ENCAP_FLAG_CSUM6); | |
569 | print_bool(PRINT_JSON, "remcsum", NULL, | |
570 | flags & TUNNEL_ENCAP_FLAG_REMCSUM); | |
571 | close_json_object(); | |
572 | } else { | |
573 | if (sport == 0) | |
574 | fputs("encap-sport auto ", f); | |
575 | else | |
576 | fprintf(f, "encap-sport %u", ntohs(sport)); | |
0b2fbb73 | 577 | |
6856fb65 | 578 | fprintf(f, "encap-dport %u ", ntohs(dport)); |
0b2fbb73 | 579 | |
6856fb65 JF |
580 | if (flags & TUNNEL_ENCAP_FLAG_CSUM) |
581 | fputs("encap-csum ", f); | |
582 | else | |
583 | fputs("noencap-csum ", f); | |
0b2fbb73 | 584 | |
6856fb65 JF |
585 | if (flags & TUNNEL_ENCAP_FLAG_CSUM6) |
586 | fputs("encap-csum6 ", f); | |
587 | else | |
588 | fputs("noencap-csum6 ", f); | |
0b2fbb73 | 589 | |
6856fb65 JF |
590 | if (flags & TUNNEL_ENCAP_FLAG_REMCSUM) |
591 | fputs("encap-remcsum ", f); | |
592 | else | |
593 | fputs("noencap-remcsum ", f); | |
594 | } | |
0b2fbb73 | 595 | } |
af89576d | 596 | } |
597 | ||
561e650e | 598 | static void gre_print_help(struct link_util *lu, int argc, char **argv, |
599 | FILE *f) | |
600 | { | |
601 | print_usage(f); | |
602 | } | |
603 | ||
af89576d | 604 | struct link_util ip6gre_link_util = { |
605 | .id = "ip6gre", | |
606 | .maxattr = IFLA_GRE_MAX, | |
607 | .parse_opt = gre_parse_opt, | |
608 | .print_opt = gre_print_opt, | |
561e650e | 609 | .print_help = gre_print_help, |
af89576d | 610 | }; |
611 | ||
612 | struct link_util ip6gretap_link_util = { | |
613 | .id = "ip6gretap", | |
614 | .maxattr = IFLA_GRE_MAX, | |
615 | .parse_opt = gre_parse_opt, | |
616 | .print_opt = gre_print_opt, | |
561e650e | 617 | .print_help = gre_print_help, |
af89576d | 618 | }; |