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ip: Consolidate ip, xdp and lwtunnel parse/dump prototypes in ip_common.h
[mirror_iproute2.git] / ip / link_gre.c
CommitLineData
237d9e82
HX		 1/*
2 * link_gre.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: Herbert Xu <herbert@gondor.apana.org.au>
10 *
11 */
12
13#include <string.h>
14#include <net/if.h>
237d9e82
HX		 15#include <sys/types.h>
16#include <sys/socket.h>
17#include <arpa/inet.h>
18
1957a322
SH		 19#include <linux/ip.h>
20#include <linux/if_tunnel.h>
237d9e82
HX		 21#include "rt_names.h"
22#include "utils.h"
23#include "ip_common.h"
24#include "tunnel.h"
25
561e650e 26static void print_usage(FILE *f)
27{
8b471354 28 fprintf(f,
9a1381d5 29 "Usage: ... { gre | gretap | erspan } [ remote ADDR ]\n"
8b471354
PS		 30 " [ local ADDR ]\n"
31 " [ [i|o]seq ]\n"
32 " [ [i|o]key KEY ]\n"
33 " [ [i|o]csum ]\n"
34 " [ ttl TTL ]\n"
35 " [ tos TOS ]\n"
36 " [ [no]pmtudisc ]\n"
adbb2965 37 " [ [no]ignore-df ]\n"
8b471354
PS		 38 " [ dev PHYS_DEV ]\n"
39 " [ noencap ]\n"
40 " [ encap { fou | gue | none } ]\n"
41 " [ encap-sport PORT ]\n"
42 " [ encap-dport PORT ]\n"
43 " [ [no]encap-csum ]\n"
44 " [ [no]encap-csum6 ]\n"
45 " [ [no]encap-remcsum ]\n"
b760a882 46 " [ external ]\n"
ad4b1425 47 " [ fwmark MARK ]\n"
1e4be52b 48 " [ erspan_ver version ]\n"
9a1381d5 49 " [ erspan IDX ]\n"
1e4be52b
WT		 50 " [ erspan_dir { ingress | egress } ]\n"
51 " [ erspan_hwid hwid ]\n"
52 " [ external ]\n"
8b471354
PS		 53 "\n"
54 "Where: ADDR := { IP_ADDRESS | any }\n"
55 " TOS := { NUMBER | inherit }\n"
56 " TTL := { 1..255 | inherit }\n"
57 " KEY := { DOTTED_QUAD | NUMBER }\n"
ad4b1425 58 " MARK := { 0x0..0xffffffff }\n"
8b471354 59 );
561e650e 60}
61
237d9e82
HX		 62static void usage(void) __attribute__((noreturn));
63static void usage(void)
64{
561e650e 65 print_usage(stderr);
237d9e82
HX		 66 exit(-1);
67}
68
69static int gre_parse_opt(struct link_util *lu, int argc, char **argv,
70 struct nlmsghdr *n)
71{
d17b136f 72 struct ifinfomsg *ifi = (struct ifinfomsg *)(n + 1);
72c771b2
HX		 73 struct {
74 struct nlmsghdr n;
75 struct ifinfomsg i;
d17b136f
PS		 76 } req = {
77 .n.nlmsg_len = NLMSG_LENGTH(sizeof(*ifi)),
78 .n.nlmsg_flags = NLM_F_REQUEST,
79 .n.nlmsg_type = RTM_GETLINK,
80 .i.ifi_family = preferred_family,
81 .i.ifi_index = ifi->ifi_index,
82 };
08ede25f 83 struct nlmsghdr *answer;
72c771b2
HX		 84 struct rtattr *tb[IFLA_MAX + 1];
85 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
86 struct rtattr *greinfo[IFLA_GRE_MAX + 1];
237d9e82
HX		 87 __u16 iflags = 0;
88 __u16 oflags = 0;
1f44b937
SP		 89 __be32 ikey = 0;
90 __be32 okey = 0;
56f5daac
SH		 91 unsigned int saddr = 0;
92 unsigned int daddr = 0;
93 unsigned int link = 0;
72c771b2
HX		 94 __u8 pmtudisc = 1;
95 __u8 ttl = 0;
96 __u8 tos = 0;
97 int len;
80c24b09
TH		 98 __u16 encaptype = 0;
99 __u16 encapflags = 0;
100 __u16 encapsport = 0;
101 __u16 encapdport = 0;
926b39e1 102 __u8 metadata = 0;
adbb2965 103 __u8 ignore_df = 0;
ad4b1425 104 __u32 fwmark = 0;
9a1381d5 105 __u32 erspan_idx = 0;
28976362
WT		 106 __u8 erspan_ver = 0;
107 __u8 erspan_dir = 0;
108 __u16 erspan_hwid = 0;
72c771b2
HX		 109
110 if (!(n->nlmsg_flags & NLM_F_CREATE)) {
86bf43c7 111 if (rtnl_talk(&rth, &req.n, &answer) < 0) {
72c771b2
HX		 112get_failed:
113 fprintf(stderr,
114 "Failed to get existing tunnel info.\n");
115 return -1;
116 }
117
86bf43c7 118 len = answer->nlmsg_len;
72c771b2
HX		 119 len -= NLMSG_LENGTH(sizeof(*ifi));
120 if (len < 0)
121 goto get_failed;
122
86bf43c7 123 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(NLMSG_DATA(answer)), len);
72c771b2
HX		 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])
ff24746c 137 ikey = rta_getattr_u32(greinfo[IFLA_GRE_IKEY]);
72c771b2
HX		 138
139 if (greinfo[IFLA_GRE_OKEY])
ff24746c 140 okey = rta_getattr_u32(greinfo[IFLA_GRE_OKEY]);
72c771b2
HX		 141
142 if (greinfo[IFLA_GRE_IFLAGS])
ff24746c 143 iflags = rta_getattr_u16(greinfo[IFLA_GRE_IFLAGS]);
72c771b2
HX		 144
145 if (greinfo[IFLA_GRE_OFLAGS])
ff24746c 146 oflags = rta_getattr_u16(greinfo[IFLA_GRE_OFLAGS]);
72c771b2
HX		 147
148 if (greinfo[IFLA_GRE_LOCAL])
ff24746c 149 saddr = rta_getattr_u32(greinfo[IFLA_GRE_LOCAL]);
72c771b2
HX		 150
151 if (greinfo[IFLA_GRE_REMOTE])
ff24746c 152 daddr = rta_getattr_u32(greinfo[IFLA_GRE_REMOTE]);
72c771b2
HX		 153
154 if (greinfo[IFLA_GRE_PMTUDISC])
ff24746c 155 pmtudisc = rta_getattr_u8(
72c771b2
HX		 156 greinfo[IFLA_GRE_PMTUDISC]);
157
158 if (greinfo[IFLA_GRE_TTL])
ff24746c 159 ttl = rta_getattr_u8(greinfo[IFLA_GRE_TTL]);
72c771b2
HX		 160
161 if (greinfo[IFLA_GRE_TOS])
ff24746c 162 tos = rta_getattr_u8(greinfo[IFLA_GRE_TOS]);
72c771b2
HX		 163
164 if (greinfo[IFLA_GRE_LINK])
a6addd5c 165 link = rta_getattr_u32(greinfo[IFLA_GRE_LINK]);
80c24b09
TH		 166
167 if (greinfo[IFLA_GRE_ENCAP_TYPE])
168 encaptype = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_TYPE]);
169 if (greinfo[IFLA_GRE_ENCAP_FLAGS])
170 encapflags = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_FLAGS]);
171 if (greinfo[IFLA_GRE_ENCAP_SPORT])
172 encapsport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_SPORT]);
173 if (greinfo[IFLA_GRE_ENCAP_DPORT])
174 encapdport = rta_getattr_u16(greinfo[IFLA_GRE_ENCAP_DPORT]);
926b39e1
PA		 175
176 if (greinfo[IFLA_GRE_COLLECT_METADATA])
177 metadata = 1;
ad4b1425 178
adbb2965
PP		 179 if (greinfo[IFLA_GRE_IGNORE_DF])
180 ignore_df =
181 !!rta_getattr_u8(greinfo[IFLA_GRE_IGNORE_DF]);
182
ad4b1425
CG		 183 if (greinfo[IFLA_GRE_FWMARK])
184 fwmark = rta_getattr_u32(greinfo[IFLA_GRE_FWMARK]);
9a1381d5
WT		 185
186 if (greinfo[IFLA_GRE_ERSPAN_INDEX])
187 erspan_idx = rta_getattr_u32(greinfo[IFLA_GRE_ERSPAN_INDEX]);
86bf43c7 188
28976362
WT		 189 if (greinfo[IFLA_GRE_ERSPAN_VER])
190 erspan_ver = rta_getattr_u8(greinfo[IFLA_GRE_ERSPAN_VER]);
191
192 if (greinfo[IFLA_GRE_ERSPAN_DIR])
193 erspan_dir = rta_getattr_u8(greinfo[IFLA_GRE_ERSPAN_DIR]);
194
195 if (greinfo[IFLA_GRE_ERSPAN_HWID])
196 erspan_hwid = rta_getattr_u16(greinfo[IFLA_GRE_ERSPAN_HWID]);
197
86bf43c7 198 free(answer);
72c771b2 199 }
237d9e82
HX		 200
201 while (argc > 0) {
202 if (!matches(*argv, "key")) {
237d9e82
HX		 203 NEXT_ARG();
204 iflags |= GRE_KEY;
205 oflags |= GRE_KEY;
1f44b937 206 ikey = okey = tnl_parse_key("key", *argv);
237d9e82 207 } else if (!matches(*argv, "ikey")) {
237d9e82
HX		 208 NEXT_ARG();
209 iflags |= GRE_KEY;
1f44b937 210 ikey = tnl_parse_key("ikey", *argv);
237d9e82 211 } else if (!matches(*argv, "okey")) {
237d9e82
HX		 212 NEXT_ARG();
213 oflags |= GRE_KEY;
1f44b937 214 okey = tnl_parse_key("okey", *argv);
237d9e82
HX		 215 } else if (!matches(*argv, "seq")) {
216 iflags |= GRE_SEQ;
217 oflags |= GRE_SEQ;
218 } else if (!matches(*argv, "iseq")) {
219 iflags |= GRE_SEQ;
220 } else if (!matches(*argv, "oseq")) {
221 oflags |= GRE_SEQ;
222 } else if (!matches(*argv, "csum")) {
223 iflags |= GRE_CSUM;
224 oflags |= GRE_CSUM;
225 } else if (!matches(*argv, "icsum")) {
226 iflags |= GRE_CSUM;
227 } else if (!matches(*argv, "ocsum")) {
228 oflags |= GRE_CSUM;
229 } else if (!matches(*argv, "nopmtudisc")) {
72c771b2 230 pmtudisc = 0;
237d9e82 231 } else if (!matches(*argv, "pmtudisc")) {
72c771b2 232 pmtudisc = 1;
237d9e82
HX		 233 } else if (!matches(*argv, "remote")) {
234 NEXT_ARG();
57daab1e 235 daddr = get_addr32(*argv);
237d9e82
HX		 236 } else if (!matches(*argv, "local")) {
237 NEXT_ARG();
57daab1e 238 saddr = get_addr32(*argv);
237d9e82 239 } else if (!matches(*argv, "dev")) {
237d9e82 240 NEXT_ARG();
7a14358b 241 link = ll_name_to_index(*argv);
0cb6bb51
CW		 242 if (link == 0) {
243 fprintf(stderr, "Cannot find device \"%s\"\n",
244 *argv);
237d9e82 245 exit(-1);
0cb6bb51 246 }
237d9e82 247 } else if (!matches(*argv, "ttl") ||
c4743c4d
SP		 248 !matches(*argv, "hoplimit") ||
249 !matches(*argv, "hlim")) {
237d9e82
HX		 250 NEXT_ARG();
251 if (strcmp(*argv, "inherit") != 0) {
c4743c4d 252 if (get_u8(&ttl, *argv, 0))
237d9e82 253 invarg("invalid TTL\n", *argv);
079e6781
RS		 254 } else
255 ttl = 0;
237d9e82
HX		 256 } else if (!matches(*argv, "tos") ||
257 !matches(*argv, "tclass") ||
258 !matches(*argv, "dsfield")) {
259 __u32 uval;
237d9e82
HX		 260
261 NEXT_ARG();
262 if (strcmp(*argv, "inherit") != 0) {
263 if (rtnl_dsfield_a2n(&uval, *argv))
264 invarg("bad TOS value", *argv);
265 tos = uval;
266 } else
267 tos = 1;
80c24b09
TH		 268 } else if (strcmp(*argv, "noencap") == 0) {
269 encaptype = TUNNEL_ENCAP_NONE;
270 } else if (strcmp(*argv, "encap") == 0) {
271 NEXT_ARG();
272 if (strcmp(*argv, "fou") == 0)
273 encaptype = TUNNEL_ENCAP_FOU;
274 else if (strcmp(*argv, "gue") == 0)
275 encaptype = TUNNEL_ENCAP_GUE;
276 else if (strcmp(*argv, "none") == 0)
277 encaptype = TUNNEL_ENCAP_NONE;
278 else
279 invarg("Invalid encap type.", *argv);
280 } else if (strcmp(*argv, "encap-sport") == 0) {
281 NEXT_ARG();
282 if (strcmp(*argv, "auto") == 0)
283 encapsport = 0;
284 else if (get_u16(&encapsport, *argv, 0))
285 invarg("Invalid source port.", *argv);
286 } else if (strcmp(*argv, "encap-dport") == 0) {
287 NEXT_ARG();
288 if (get_u16(&encapdport, *argv, 0))
289 invarg("Invalid destination port.", *argv);
290 } else if (strcmp(*argv, "encap-csum") == 0) {
291 encapflags |= TUNNEL_ENCAP_FLAG_CSUM;
292 } else if (strcmp(*argv, "noencap-csum") == 0) {
293 encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM;
294 } else if (strcmp(*argv, "encap-udp6-csum") == 0) {
295 encapflags |= TUNNEL_ENCAP_FLAG_CSUM6;
296 } else if (strcmp(*argv, "noencap-udp6-csum") == 0) {
147ade01 297 encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6;
858dbb20
TH		 298 } else if (strcmp(*argv, "encap-remcsum") == 0) {
299 encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
300 } else if (strcmp(*argv, "noencap-remcsum") == 0) {
147ade01 301 encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
926b39e1
PA		 302 } else if (strcmp(*argv, "external") == 0) {
303 metadata = 1;
adbb2965
PP		 304 } else if (strcmp(*argv, "ignore-df") == 0) {
305 ignore_df = 1;
306 } else if (strcmp(*argv, "noignore-df") == 0) {
307 /*
308 *only the lsb is significant, use 2 for presence
309 */
310 ignore_df = 2;
ad4b1425
CG		 311 } else if (strcmp(*argv, "fwmark") == 0) {
312 NEXT_ARG();
313 if (get_u32(&fwmark, *argv, 0))
314 invarg("invalid fwmark\n", *argv);
9a1381d5
WT		 315 } else if (strcmp(*argv, "erspan") == 0) {
316 NEXT_ARG();
317 if (get_u32(&erspan_idx, *argv, 0))
318 invarg("invalid erspan index\n", *argv);
319 if (erspan_idx & ~((1<<20) - 1) || erspan_idx == 0)
320 invarg("erspan index must be > 0 and <= 20-bit\n", *argv);
28976362
WT		 321 } else if (strcmp(*argv, "erspan_ver") == 0) {
322 NEXT_ARG();
323 if (get_u8(&erspan_ver, *argv, 0))
324 invarg("invalid erspan version\n", *argv);
325 if (erspan_ver != 1 && erspan_ver != 2)
326 invarg("erspan version must be 1 or 2\n", *argv);
327 } else if (strcmp(*argv, "erspan_dir") == 0) {
328 NEXT_ARG();
329 if (matches(*argv, "ingress") == 0)
330 erspan_dir = 0;
331 else if (matches(*argv, "egress") == 0)
332 erspan_dir = 1;
333 else
334 invarg("Invalid erspan direction.", *argv);
335 } else if (strcmp(*argv, "erspan_hwid") == 0) {
336 NEXT_ARG();
337 if (get_u16(&erspan_hwid, *argv, 0))
338 invarg("invalid erspan hwid\n", *argv);
0612519e 339 } else
237d9e82
HX		 340 usage();
341 argc--; argv++;
342 }
343
344 if (!ikey && IN_MULTICAST(ntohl(daddr))) {
345 ikey = daddr;
346 iflags |= GRE_KEY;
347 }
348 if (!okey && IN_MULTICAST(ntohl(daddr))) {
349 okey = daddr;
350 oflags |= GRE_KEY;
351 }
352 if (IN_MULTICAST(ntohl(daddr)) && !saddr) {
14645ec2 353 fprintf(stderr, "A broadcast tunnel requires a source address.\n");
237d9e82
HX		 354 return -1;
355 }
356
df217d5d
JB		 357 if (!metadata) {
358 addattr32(n, 1024, IFLA_GRE_IKEY, ikey);
359 addattr32(n, 1024, IFLA_GRE_OKEY, okey);
360 addattr_l(n, 1024, IFLA_GRE_IFLAGS, &iflags, 2);
361 addattr_l(n, 1024, IFLA_GRE_OFLAGS, &oflags, 2);
362 addattr_l(n, 1024, IFLA_GRE_LOCAL, &saddr, 4);
363 addattr_l(n, 1024, IFLA_GRE_REMOTE, &daddr, 4);
364 addattr_l(n, 1024, IFLA_GRE_PMTUDISC, &pmtudisc, 1);
de54cdd3
SP		 365 if (ignore_df)
366 addattr8(n, 1024, IFLA_GRE_IGNORE_DF, ignore_df & 1);
df217d5d
JB		 367 if (link)
368 addattr32(n, 1024, IFLA_GRE_LINK, link);
369 addattr_l(n, 1024, IFLA_GRE_TTL, &ttl, 1);
370 addattr_l(n, 1024, IFLA_GRE_TOS, &tos, 1);
ad4b1425 371 addattr32(n, 1024, IFLA_GRE_FWMARK, fwmark);
28976362
WT		 372 if (erspan_ver) {
373 addattr8(n, 1024, IFLA_GRE_ERSPAN_VER, erspan_ver);
374 if (erspan_ver == 1 && erspan_idx != 0) {
de54cdd3
SP		 375 addattr32(n, 1024,
376 IFLA_GRE_ERSPAN_INDEX, erspan_idx);
28976362 377 } else if (erspan_ver == 2) {
de54cdd3
SP		 378 addattr8(n, 1024,
379 IFLA_GRE_ERSPAN_DIR, erspan_dir);
380 addattr16(n, 1024,
381 IFLA_GRE_ERSPAN_HWID, erspan_hwid);
28976362
WT		 382 }
383 }
de54cdd3
SP		 384 addattr16(n, 1024, IFLA_GRE_ENCAP_TYPE, encaptype);
385 addattr16(n, 1024, IFLA_GRE_ENCAP_FLAGS, encapflags);
386 addattr16(n, 1024, IFLA_GRE_ENCAP_SPORT, htons(encapsport));
387 addattr16(n, 1024, IFLA_GRE_ENCAP_DPORT, htons(encapdport));
df217d5d
JB		 388 } else {
389 addattr_l(n, 1024, IFLA_GRE_COLLECT_METADATA, NULL, 0);
390 }
237d9e82
HX		 391
392 return 0;
393}
394
00ff4b8e 395static void gre_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
237d9e82 396{
237d9e82 397 char s2[64];
56f5daac
SH		 398 unsigned int iflags = 0;
399 unsigned int oflags = 0;
375560c4 400 __u8 ttl = 0;
3caa526c 401 __u8 tos = 0;
237d9e82 402
00ff4b8e
SP		 403 if (!tb)
404 return;
405
406 if (tb[IFLA_GRE_COLLECT_METADATA]) {
407 print_bool(PRINT_ANY, "external", "external", true);
408 return;
409 }
410
b761fc41
SP		 411 tnl_print_endpoint("remote", tb[IFLA_GRE_REMOTE], AF_INET);
412 tnl_print_endpoint("local", tb[IFLA_GRE_LOCAL], AF_INET);
237d9e82 413
45d3a6ef 414 if (tb[IFLA_GRE_LINK]) {
56f5daac 415 unsigned int link = rta_getattr_u32(tb[IFLA_GRE_LINK]);
237d9e82 416
45d3a6ef
SP		 417 if (link) {
418 print_string(PRINT_ANY, "link", "dev %s ",
419 ll_index_to_name(link));
420 }
237d9e82
HX		 421 }
422
375560c4
SP		 423 if (tb[IFLA_GRE_TTL])
424 ttl = rta_getattr_u8(tb[IFLA_GRE_TTL]);
425 if (is_json_context() || ttl)
426 print_uint(PRINT_ANY, "ttl", "ttl %u ", ttl);
427 else
e2d45883 428 print_string(PRINT_FP, NULL, "ttl %s ", "inherit");
e2d45883 429
3caa526c
SP		 430 if (tb[IFLA_GRE_TOS])
431 tos = rta_getattr_u8(tb[IFLA_GRE_TOS]);
432 if (tos) {
433 if (is_json_context() || tos != 1)
434 print_0xhex(PRINT_ANY, "tos", "tos 0x%x ", tos);
435 else
436 print_string(PRINT_FP, NULL, "tos %s ", "inherit");
237d9e82
HX		 437 }
438
e2d45883
JF		 439 if (tb[IFLA_GRE_PMTUDISC]) {
440 if (!rta_getattr_u8(tb[IFLA_GRE_PMTUDISC]))
441 print_bool(PRINT_ANY, "pmtudisc", "nopmtudisc ", false);
442 else
443 print_bool(PRINT_JSON, "pmtudisc", NULL, true);
444 }
237d9e82 445
00ff4b8e
SP		 446 if (tb[IFLA_GRE_IGNORE_DF] && rta_getattr_u8(tb[IFLA_GRE_IGNORE_DF]))
447 print_bool(PRINT_ANY, "ignore_df", "ignore-df ", true);
448
237d9e82 449 if (tb[IFLA_GRE_IFLAGS])
ff24746c 450 iflags = rta_getattr_u16(tb[IFLA_GRE_IFLAGS]);
237d9e82
HX		 451
452 if (tb[IFLA_GRE_OFLAGS])
ff24746c 453 oflags = rta_getattr_u16(tb[IFLA_GRE_OFLAGS]);
237d9e82 454
71816553 455 if ((iflags & GRE_KEY) && tb[IFLA_GRE_IKEY]) {
237d9e82 456 inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_IKEY]), s2, sizeof(s2));
e2d45883 457 print_string(PRINT_ANY, "ikey", "ikey %s ", s2);
237d9e82
HX		 458 }
459
71816553 460 if ((oflags & GRE_KEY) && tb[IFLA_GRE_OKEY]) {
237d9e82 461 inet_ntop(AF_INET, RTA_DATA(tb[IFLA_GRE_OKEY]), s2, sizeof(s2));
e2d45883 462 print_string(PRINT_ANY, "okey", "okey %s ", s2);
237d9e82
HX		 463 }
464
465 if (iflags & GRE_SEQ)
e2d45883 466 print_bool(PRINT_ANY, "iseq", "iseq ", true);
237d9e82 467 if (oflags & GRE_SEQ)
e2d45883 468 print_bool(PRINT_ANY, "oseq", "oseq ", true);
237d9e82 469 if (iflags & GRE_CSUM)
e2d45883 470 print_bool(PRINT_ANY, "icsum", "icsum ", true);
237d9e82 471 if (oflags & GRE_CSUM)
e2d45883
JF		 472 print_bool(PRINT_ANY, "ocsum", "ocsum ", true);
473
474 if (tb[IFLA_GRE_FWMARK]) {
475 __u32 fwmark = rta_getattr_u32(tb[IFLA_GRE_FWMARK]);
476
477 if (fwmark) {
e97ad3d2
SP		 478 print_0xhex(PRINT_ANY,
479 "fwmark", "fwmark 0x%x ", fwmark);
e2d45883 480 }
ad4b1425 481 }
adbb2965 482
9a1381d5
WT		 483 if (tb[IFLA_GRE_ERSPAN_INDEX]) {
484 __u32 erspan_idx = rta_getattr_u32(tb[IFLA_GRE_ERSPAN_INDEX]);
485
3cb92eb9
SP		 486 print_uint(PRINT_ANY,
487 "erspan_index", "erspan_index %u ", erspan_idx);
28976362
WT		 488 }
489
490 if (tb[IFLA_GRE_ERSPAN_VER]) {
491 __u8 erspan_ver = rta_getattr_u8(tb[IFLA_GRE_ERSPAN_VER]);
492
493 print_uint(PRINT_ANY, "erspan_ver", "erspan_ver %u ", erspan_ver);
494 }
495
496 if (tb[IFLA_GRE_ERSPAN_DIR]) {
497 __u8 erspan_dir = rta_getattr_u8(tb[IFLA_GRE_ERSPAN_DIR]);
498
499 if (erspan_dir == 0)
500 print_string(PRINT_ANY, "erspan_dir",
501 "erspan_dir ingress ", NULL);
502 else
503 print_string(PRINT_ANY, "erspan_dir",
504 "erspan_dir egress ", NULL);
505 }
506
507 if (tb[IFLA_GRE_ERSPAN_HWID]) {
508 __u16 erspan_hwid = rta_getattr_u16(tb[IFLA_GRE_ERSPAN_HWID]);
509
510 print_hex(PRINT_ANY, "erspan_hwid", "erspan_hwid 0x%x ", erspan_hwid);
9a1381d5
WT		 511 }
512
bad76e6b
SP		 513 tnl_print_encap(tb,
514 IFLA_GRE_ENCAP_TYPE,
515 IFLA_GRE_ENCAP_FLAGS,
516 IFLA_GRE_ENCAP_SPORT,
517 IFLA_GRE_ENCAP_DPORT);
237d9e82
HX		 518}
519
561e650e 520static void gre_print_help(struct link_util *lu, int argc, char **argv,
e2d45883 521 FILE *f)
561e650e 522{
523 print_usage(f);
524}
525
237d9e82
HX		 526struct link_util gre_link_util = {
527 .id = "gre",
528 .maxattr = IFLA_GRE_MAX,
529 .parse_opt = gre_parse_opt,
530 .print_opt = gre_print_opt,
561e650e 531 .print_help = gre_print_help,
237d9e82
HX		 532};
533
534struct link_util gretap_link_util = {
535 .id = "gretap",
536 .maxattr = IFLA_GRE_MAX,
537 .parse_opt = gre_parse_opt,
538 .print_opt = gre_print_opt,
561e650e 539 .print_help = gre_print_help,
237d9e82 540};
9a1381d5
WT		 541
542struct link_util erspan_link_util = {
543 .id = "erspan",
544 .maxattr = IFLA_GRE_MAX,
545 .parse_opt = gre_parse_opt,
546 .print_opt = gre_print_opt,
547 .print_help = gre_print_help,
548};
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