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[mirror_iproute2.git] / ip / ipaddress.c
1 /*
2 * ipaddress.c "ip address".
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: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
11 */
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <unistd.h>
16 #include <inttypes.h>
17 #include <fcntl.h>
18 #include <sys/ioctl.h>
19 #include <sys/socket.h>
20 #include <sys/param.h>
21 #include <errno.h>
22 #include <netinet/in.h>
23 #include <arpa/inet.h>
24 #include <string.h>
25 #include <fnmatch.h>
26
27 #include <linux/netdevice.h>
28 #include <linux/if_arp.h>
29 #include <linux/if_infiniband.h>
30 #include <linux/sockios.h>
31 #include <linux/net_namespace.h>
32
33 #include "rt_names.h"
34 #include "utils.h"
35 #include "ll_map.h"
36 #include "ip_common.h"
37 #include "color.h"
38
39 enum {
40 IPADD_LIST,
41 IPADD_FLUSH,
42 IPADD_SAVE,
43 };
44
45 static struct link_filter filter;
46 static int do_link;
47
48 static void usage(void) __attribute__((noreturn));
49
50 static void usage(void)
51 {
52 if (do_link)
53 iplink_usage();
54
55 fprintf(stderr,
56 "Usage: ip address {add|change|replace} IFADDR dev IFNAME [ LIFETIME ]\n"
57 " [ CONFFLAG-LIST ]\n"
58 " ip address del IFADDR dev IFNAME [mngtmpaddr]\n"
59 " ip address {save|flush} [ dev IFNAME ] [ scope SCOPE-ID ]\n"
60 " [ to PREFIX ] [ FLAG-LIST ] [ label LABEL ] [up]\n"
61 " ip address [ show [ dev IFNAME ] [ scope SCOPE-ID ] [ master DEVICE ]\n"
62 " [ type TYPE ] [ to PREFIX ] [ FLAG-LIST ]\n"
63 " [ label LABEL ] [up] [ vrf NAME ] ]\n"
64 " ip address {showdump|restore}\n"
65 "IFADDR := PREFIX | ADDR peer PREFIX\n"
66 " [ broadcast ADDR ] [ anycast ADDR ]\n"
67 " [ label IFNAME ] [ scope SCOPE-ID ] [ metric METRIC ]\n"
68 "SCOPE-ID := [ host | link | global | NUMBER ]\n"
69 "FLAG-LIST := [ FLAG-LIST ] FLAG\n"
70 "FLAG := [ permanent | dynamic | secondary | primary |\n"
71 " [-]tentative | [-]deprecated | [-]dadfailed | temporary |\n"
72 " CONFFLAG-LIST ]\n"
73 "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n"
74 "CONFFLAG := [ home | nodad | mngtmpaddr | noprefixroute | autojoin ]\n"
75 "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n"
76 "LFT := forever | SECONDS\n"
77 "TYPE := { vlan | veth | vcan | vxcan | dummy | ifb | macvlan | macvtap |\n"
78 " bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan | lowpan |\n"
79 " gre | gretap | erspan | ip6gre | ip6gretap | ip6erspan | vti |\n"
80 " nlmon | can | bond_slave | ipvlan | geneve | bridge_slave |\n"
81 " hsr | macsec | netdevsim }\n");
82
83 exit(-1);
84 }
85
86 static void print_link_flags(FILE *fp, unsigned int flags, unsigned int mdown)
87 {
88 open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
89 if (flags & IFF_UP && !(flags & IFF_RUNNING))
90 print_string(PRINT_ANY, NULL,
91 flags ? "%s," : "%s", "NO-CARRIER");
92 flags &= ~IFF_RUNNING;
93 #define _PF(f) if (flags&IFF_##f) { \
94 flags &= ~IFF_##f ; \
95 print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); }
96 _PF(LOOPBACK);
97 _PF(BROADCAST);
98 _PF(POINTOPOINT);
99 _PF(MULTICAST);
100 _PF(NOARP);
101 _PF(ALLMULTI);
102 _PF(PROMISC);
103 _PF(MASTER);
104 _PF(SLAVE);
105 _PF(DEBUG);
106 _PF(DYNAMIC);
107 _PF(AUTOMEDIA);
108 _PF(PORTSEL);
109 _PF(NOTRAILERS);
110 _PF(UP);
111 _PF(LOWER_UP);
112 _PF(DORMANT);
113 _PF(ECHO);
114 #undef _PF
115 if (flags)
116 print_hex(PRINT_ANY, NULL, "%x", flags);
117 if (mdown)
118 print_string(PRINT_ANY, NULL, ",%s", "M-DOWN");
119 close_json_array(PRINT_ANY, "> ");
120 }
121
122 static const char *oper_states[] = {
123 "UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
124 "TESTING", "DORMANT", "UP"
125 };
126
127 static void print_operstate(FILE *f, __u8 state)
128 {
129 if (state >= ARRAY_SIZE(oper_states)) {
130 if (is_json_context())
131 print_uint(PRINT_JSON, "operstate_index", NULL, state);
132 else
133 print_0xhex(PRINT_FP, NULL, "state %#llx", state);
134 } else if (brief) {
135 print_color_string(PRINT_ANY,
136 oper_state_color(state),
137 "operstate",
138 "%-14s ",
139 oper_states[state]);
140 } else {
141 if (is_json_context())
142 print_string(PRINT_JSON,
143 "operstate",
144 NULL, oper_states[state]);
145 else {
146 fprintf(f, "state ");
147 color_fprintf(f, oper_state_color(state),
148 "%s ", oper_states[state]);
149 }
150 }
151 }
152
153 int get_operstate(const char *name)
154 {
155 int i;
156
157 for (i = 0; i < ARRAY_SIZE(oper_states); i++)
158 if (strcasecmp(name, oper_states[i]) == 0)
159 return i;
160 return -1;
161 }
162
163 static void print_queuelen(FILE *f, struct rtattr *tb[IFLA_MAX + 1])
164 {
165 int qlen;
166
167 if (tb[IFLA_TXQLEN])
168 qlen = rta_getattr_u32(tb[IFLA_TXQLEN]);
169 else {
170 struct ifreq ifr = {};
171 int s = socket(AF_INET, SOCK_STREAM, 0);
172
173 if (s < 0)
174 return;
175
176 strcpy(ifr.ifr_name, rta_getattr_str(tb[IFLA_IFNAME]));
177 if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
178 fprintf(stderr,
179 "ioctl(SIOCGIFTXQLEN) failed: %s\n",
180 strerror(errno));
181 close(s);
182 return;
183 }
184 close(s);
185 qlen = ifr.ifr_qlen;
186 }
187 if (qlen)
188 print_int(PRINT_ANY, "txqlen", "qlen %d", qlen);
189 }
190
191 static const char *link_modes[] = {
192 "DEFAULT", "DORMANT"
193 };
194
195 static void print_linkmode(FILE *f, struct rtattr *tb)
196 {
197 unsigned int mode = rta_getattr_u8(tb);
198
199 if (mode >= ARRAY_SIZE(link_modes))
200 print_int(PRINT_ANY,
201 "linkmode_index",
202 "mode %d ",
203 mode);
204 else
205 print_string(PRINT_ANY,
206 "linkmode",
207 "mode %s "
208 , link_modes[mode]);
209 }
210
211 static char *parse_link_kind(struct rtattr *tb, bool slave)
212 {
213 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
214 int attr = slave ? IFLA_INFO_SLAVE_KIND : IFLA_INFO_KIND;
215
216 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
217
218 if (linkinfo[attr])
219 return RTA_DATA(linkinfo[attr]);
220
221 return "";
222 }
223
224 static int match_link_kind(struct rtattr **tb, const char *kind, bool slave)
225 {
226 if (!tb[IFLA_LINKINFO])
227 return -1;
228
229 return strcmp(parse_link_kind(tb[IFLA_LINKINFO], slave), kind);
230 }
231
232 static void print_linktype(FILE *fp, struct rtattr *tb)
233 {
234 struct rtattr *linkinfo[IFLA_INFO_MAX+1];
235 struct link_util *lu;
236 struct link_util *slave_lu;
237 char slave[32];
238
239 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
240 open_json_object("linkinfo");
241
242 if (linkinfo[IFLA_INFO_KIND]) {
243 const char *kind
244 = rta_getattr_str(linkinfo[IFLA_INFO_KIND]);
245
246 print_nl();
247 print_string(PRINT_ANY, "info_kind", " %s ", kind);
248
249 lu = get_link_kind(kind);
250 if (lu && lu->print_opt) {
251 struct rtattr *attr[lu->maxattr+1], **data = NULL;
252
253 if (linkinfo[IFLA_INFO_DATA]) {
254 parse_rtattr_nested(attr, lu->maxattr,
255 linkinfo[IFLA_INFO_DATA]);
256 data = attr;
257 }
258 open_json_object("info_data");
259 lu->print_opt(lu, fp, data);
260 close_json_object();
261
262 if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
263 lu->print_xstats) {
264 open_json_object("info_xstats");
265 lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
266 close_json_object();
267 }
268 }
269 }
270
271 if (linkinfo[IFLA_INFO_SLAVE_KIND]) {
272 const char *slave_kind
273 = rta_getattr_str(linkinfo[IFLA_INFO_SLAVE_KIND]);
274
275 print_nl();
276 print_string(PRINT_ANY,
277 "info_slave_kind",
278 " %s_slave ",
279 slave_kind);
280
281 snprintf(slave, sizeof(slave), "%s_slave", slave_kind);
282
283 slave_lu = get_link_kind(slave);
284 if (slave_lu && slave_lu->print_opt) {
285 struct rtattr *attr[slave_lu->maxattr+1], **data = NULL;
286
287 if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
288 parse_rtattr_nested(attr, slave_lu->maxattr,
289 linkinfo[IFLA_INFO_SLAVE_DATA]);
290 data = attr;
291 }
292 open_json_object("info_slave_data");
293 slave_lu->print_opt(slave_lu, fp, data);
294 close_json_object();
295 }
296 }
297 close_json_object();
298 }
299
300 static void print_af_spec(FILE *fp, struct rtattr *af_spec_attr)
301 {
302 struct rtattr *inet6_attr;
303 struct rtattr *tb[IFLA_INET6_MAX + 1];
304
305 inet6_attr = parse_rtattr_one_nested(AF_INET6, af_spec_attr);
306 if (!inet6_attr)
307 return;
308
309 parse_rtattr_nested(tb, IFLA_INET6_MAX, inet6_attr);
310
311 if (tb[IFLA_INET6_ADDR_GEN_MODE]) {
312 __u8 mode = rta_getattr_u8(tb[IFLA_INET6_ADDR_GEN_MODE]);
313 SPRINT_BUF(b1);
314
315 switch (mode) {
316 case IN6_ADDR_GEN_MODE_EUI64:
317 print_string(PRINT_ANY,
318 "inet6_addr_gen_mode",
319 "addrgenmode %s ",
320 "eui64");
321 break;
322 case IN6_ADDR_GEN_MODE_NONE:
323 print_string(PRINT_ANY,
324 "inet6_addr_gen_mode",
325 "addrgenmode %s ",
326 "none");
327 break;
328 case IN6_ADDR_GEN_MODE_STABLE_PRIVACY:
329 print_string(PRINT_ANY,
330 "inet6_addr_gen_mode",
331 "addrgenmode %s ",
332 "stable_secret");
333 break;
334 case IN6_ADDR_GEN_MODE_RANDOM:
335 print_string(PRINT_ANY,
336 "inet6_addr_gen_mode",
337 "addrgenmode %s ",
338 "random");
339 break;
340 default:
341 snprintf(b1, sizeof(b1), "%#.2hhx", mode);
342 print_string(PRINT_ANY,
343 "inet6_addr_gen_mode",
344 "addrgenmode %s ",
345 b1);
346 break;
347 }
348 }
349 }
350
351 static void print_vf_stats64(FILE *fp, struct rtattr *vfstats);
352
353 static void print_vfinfo(FILE *fp, struct ifinfomsg *ifi, struct rtattr *vfinfo)
354 {
355 struct ifla_vf_mac *vf_mac;
356 struct ifla_vf_broadcast *vf_broadcast;
357 struct ifla_vf_tx_rate *vf_tx_rate;
358 struct rtattr *vf[IFLA_VF_MAX + 1] = {};
359
360 SPRINT_BUF(b1);
361
362 if (vfinfo->rta_type != IFLA_VF_INFO) {
363 fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
364 return;
365 }
366
367 parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
368
369 vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
370 vf_broadcast = RTA_DATA(vf[IFLA_VF_BROADCAST]);
371 vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
372
373 print_string(PRINT_FP, NULL, "%s ", _SL_);
374 print_int(PRINT_ANY, "vf", "vf %d ", vf_mac->vf);
375
376 print_string(PRINT_ANY,
377 "link_type",
378 " link/%s ",
379 ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
380
381 print_color_string(PRINT_ANY, COLOR_MAC,
382 "address", "%s",
383 ll_addr_n2a((unsigned char *) &vf_mac->mac,
384 ifi->ifi_type == ARPHRD_ETHER ?
385 ETH_ALEN : INFINIBAND_ALEN,
386 ifi->ifi_type,
387 b1, sizeof(b1)));
388
389 if (vf[IFLA_VF_BROADCAST]) {
390 if (ifi->ifi_flags&IFF_POINTOPOINT) {
391 print_string(PRINT_FP, NULL, " peer ", NULL);
392 print_bool(PRINT_JSON,
393 "link_pointtopoint", NULL, true);
394 } else
395 print_string(PRINT_FP, NULL, " brd ", NULL);
396
397 print_color_string(PRINT_ANY, COLOR_MAC,
398 "broadcast", "%s",
399 ll_addr_n2a((unsigned char *) &vf_broadcast->broadcast,
400 ifi->ifi_type == ARPHRD_ETHER ?
401 ETH_ALEN : INFINIBAND_ALEN,
402 ifi->ifi_type,
403 b1, sizeof(b1)));
404 }
405
406 if (vf[IFLA_VF_VLAN_LIST]) {
407 struct rtattr *i, *vfvlanlist = vf[IFLA_VF_VLAN_LIST];
408 int rem = RTA_PAYLOAD(vfvlanlist);
409
410 open_json_array(PRINT_JSON, "vlan_list");
411 for (i = RTA_DATA(vfvlanlist);
412 RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
413 struct ifla_vf_vlan_info *vf_vlan_info = RTA_DATA(i);
414 SPRINT_BUF(b2);
415
416 open_json_object(NULL);
417 if (vf_vlan_info->vlan)
418 print_int(PRINT_ANY,
419 "vlan",
420 ", vlan %d",
421 vf_vlan_info->vlan);
422 if (vf_vlan_info->qos)
423 print_int(PRINT_ANY,
424 "qos",
425 ", qos %d",
426 vf_vlan_info->qos);
427 if (vf_vlan_info->vlan_proto &&
428 vf_vlan_info->vlan_proto != htons(ETH_P_8021Q))
429 print_string(PRINT_ANY,
430 "protocol",
431 ", vlan protocol %s",
432 ll_proto_n2a(
433 vf_vlan_info->vlan_proto,
434 b2, sizeof(b2)));
435 close_json_object();
436 }
437 close_json_array(PRINT_JSON, NULL);
438 } else {
439 struct ifla_vf_vlan *vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
440
441 if (vf_vlan->vlan)
442 print_int(PRINT_ANY,
443 "vlan",
444 ", vlan %d",
445 vf_vlan->vlan);
446 if (vf_vlan->qos)
447 print_int(PRINT_ANY, "qos", ", qos %d", vf_vlan->qos);
448 }
449
450 if (vf_tx_rate->rate)
451 print_uint(PRINT_ANY,
452 "tx_rate",
453 ", tx rate %u (Mbps)",
454 vf_tx_rate->rate);
455
456 if (vf[IFLA_VF_RATE]) {
457 struct ifla_vf_rate *vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
458 int max_tx = vf_rate->max_tx_rate;
459 int min_tx = vf_rate->min_tx_rate;
460
461 if (is_json_context()) {
462 open_json_object("rate");
463 print_uint(PRINT_JSON, "max_tx", NULL, max_tx);
464 print_uint(PRINT_ANY, "min_tx", NULL, min_tx);
465 close_json_object();
466 } else {
467 if (max_tx)
468 fprintf(fp, ", max_tx_rate %uMbps", max_tx);
469 if (min_tx)
470 fprintf(fp, ", min_tx_rate %uMbps", min_tx);
471 }
472 }
473
474 if (vf[IFLA_VF_SPOOFCHK]) {
475 struct ifla_vf_spoofchk *vf_spoofchk =
476 RTA_DATA(vf[IFLA_VF_SPOOFCHK]);
477
478 if (vf_spoofchk->setting != -1)
479 print_bool(PRINT_ANY,
480 "spoofchk",
481 vf_spoofchk->setting ?
482 ", spoof checking on" : ", spoof checking off",
483 vf_spoofchk->setting);
484 }
485
486 if (vf[IFLA_VF_IB_NODE_GUID]) {
487 struct ifla_vf_guid *guid = RTA_DATA(vf[IFLA_VF_IB_NODE_GUID]);
488 uint64_t node_guid = ntohll(guid->guid);
489
490 print_string(PRINT_ANY, "node guid", ", NODE_GUID %s",
491 ll_addr_n2a((const unsigned char *)&node_guid,
492 sizeof(node_guid), ARPHRD_INFINIBAND,
493 b1, sizeof(b1)));
494 }
495 if (vf[IFLA_VF_IB_PORT_GUID]) {
496 struct ifla_vf_guid *guid = RTA_DATA(vf[IFLA_VF_IB_PORT_GUID]);
497 uint64_t port_guid = ntohll(guid->guid);
498
499 print_string(PRINT_ANY, "port guid", ", PORT_GUID %s",
500 ll_addr_n2a((const unsigned char *)&port_guid,
501 sizeof(port_guid), ARPHRD_INFINIBAND,
502 b1, sizeof(b1)));
503 }
504 if (vf[IFLA_VF_LINK_STATE]) {
505 struct ifla_vf_link_state *vf_linkstate =
506 RTA_DATA(vf[IFLA_VF_LINK_STATE]);
507
508 if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_AUTO)
509 print_string(PRINT_ANY,
510 "link_state",
511 ", link-state %s",
512 "auto");
513 else if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_ENABLE)
514 print_string(PRINT_ANY,
515 "link_state",
516 ", link-state %s",
517 "enable");
518 else
519 print_string(PRINT_ANY,
520 "link_state",
521 ", link-state %s",
522 "disable");
523 }
524
525 if (vf[IFLA_VF_TRUST]) {
526 struct ifla_vf_trust *vf_trust = RTA_DATA(vf[IFLA_VF_TRUST]);
527
528 if (vf_trust->setting != -1)
529 print_bool(PRINT_ANY,
530 "trust",
531 vf_trust->setting ? ", trust on" : ", trust off",
532 vf_trust->setting);
533 }
534
535 if (vf[IFLA_VF_RSS_QUERY_EN]) {
536 struct ifla_vf_rss_query_en *rss_query =
537 RTA_DATA(vf[IFLA_VF_RSS_QUERY_EN]);
538
539 if (rss_query->setting != -1)
540 print_bool(PRINT_ANY,
541 "query_rss_en",
542 rss_query->setting ? ", query_rss on"
543 : ", query_rss off",
544 rss_query->setting);
545 }
546
547 if (vf[IFLA_VF_STATS] && show_stats)
548 print_vf_stats64(fp, vf[IFLA_VF_STATS]);
549 }
550
551 void print_num(FILE *fp, unsigned int width, uint64_t count)
552 {
553 const char *prefix = "kMGTPE";
554 const unsigned int base = use_iec ? 1024 : 1000;
555 uint64_t powi = 1;
556 uint16_t powj = 1;
557 uint8_t precision = 2;
558 char buf[64];
559
560 if (!human_readable || count < base) {
561 fprintf(fp, "%-*"PRIu64" ", width, count);
562 return;
563 }
564
565 /* increase value by a factor of 1000/1024 and print
566 * if result is something a human can read
567 */
568 for (;;) {
569 powi *= base;
570 if (count / base < powi)
571 break;
572
573 if (!prefix[1])
574 break;
575 ++prefix;
576 }
577
578 /* try to guess a good number of digits for precision */
579 for (; precision > 0; precision--) {
580 powj *= 10;
581 if (count / powi < powj)
582 break;
583 }
584
585 snprintf(buf, sizeof(buf), "%.*f%c%s", precision,
586 (double) count / powi, *prefix, use_iec ? "i" : "");
587
588 fprintf(fp, "%-*s ", width, buf);
589 }
590
591 static void print_vf_stats64(FILE *fp, struct rtattr *vfstats)
592 {
593 struct rtattr *vf[IFLA_VF_STATS_MAX + 1];
594
595 if (vfstats->rta_type != IFLA_VF_STATS) {
596 fprintf(stderr, "BUG: rta type is %d\n", vfstats->rta_type);
597 return;
598 }
599
600 parse_rtattr_nested(vf, IFLA_VF_STATS_MAX, vfstats);
601
602 if (is_json_context()) {
603 open_json_object("stats");
604
605 /* RX stats */
606 open_json_object("rx");
607 print_u64(PRINT_JSON, "bytes", NULL,
608 rta_getattr_u64(vf[IFLA_VF_STATS_RX_BYTES]));
609 print_u64(PRINT_JSON, "packets", NULL,
610 rta_getattr_u64(vf[IFLA_VF_STATS_RX_PACKETS]));
611 print_u64(PRINT_JSON, "multicast", NULL,
612 rta_getattr_u64(vf[IFLA_VF_STATS_MULTICAST]));
613 print_u64(PRINT_JSON, "broadcast", NULL,
614 rta_getattr_u64(vf[IFLA_VF_STATS_BROADCAST]));
615 if (vf[IFLA_VF_STATS_RX_DROPPED])
616 print_u64(PRINT_JSON, "dropped", NULL,
617 rta_getattr_u64(vf[IFLA_VF_STATS_RX_DROPPED]));
618 close_json_object();
619
620 /* TX stats */
621 open_json_object("tx");
622 print_u64(PRINT_JSON, "tx_bytes", NULL,
623 rta_getattr_u64(vf[IFLA_VF_STATS_TX_BYTES]));
624 print_u64(PRINT_JSON, "tx_packets", NULL,
625 rta_getattr_u64(vf[IFLA_VF_STATS_TX_PACKETS]));
626 if (vf[IFLA_VF_STATS_TX_DROPPED])
627 print_u64(PRINT_JSON, "dropped", NULL,
628 rta_getattr_u64(vf[IFLA_VF_STATS_TX_DROPPED]));
629 close_json_object();
630 close_json_object();
631 } else {
632 /* RX stats */
633 fprintf(fp, "%s", _SL_);
634 fprintf(fp, " RX: bytes packets mcast bcast ");
635 if (vf[IFLA_VF_STATS_RX_DROPPED])
636 fprintf(fp, " dropped ");
637 fprintf(fp, "%s", _SL_);
638 fprintf(fp, " ");
639
640 print_num(fp, 10, rta_getattr_u64(vf[IFLA_VF_STATS_RX_BYTES]));
641 print_num(fp, 8, rta_getattr_u64(vf[IFLA_VF_STATS_RX_PACKETS]));
642 print_num(fp, 7, rta_getattr_u64(vf[IFLA_VF_STATS_MULTICAST]));
643 print_num(fp, 7, rta_getattr_u64(vf[IFLA_VF_STATS_BROADCAST]));
644 if (vf[IFLA_VF_STATS_RX_DROPPED])
645 print_num(fp, 8, rta_getattr_u64(vf[IFLA_VF_STATS_RX_DROPPED]));
646
647 /* TX stats */
648 fprintf(fp, "%s", _SL_);
649 fprintf(fp, " TX: bytes packets ");
650 if (vf[IFLA_VF_STATS_TX_DROPPED])
651 fprintf(fp, " dropped ");
652 fprintf(fp, "%s", _SL_);
653 fprintf(fp, " ");
654
655 print_num(fp, 10, rta_getattr_u64(vf[IFLA_VF_STATS_TX_BYTES]));
656 print_num(fp, 8, rta_getattr_u64(vf[IFLA_VF_STATS_TX_PACKETS]));
657 if (vf[IFLA_VF_STATS_TX_DROPPED])
658 print_num(fp, 8, rta_getattr_u64(vf[IFLA_VF_STATS_TX_DROPPED]));
659 }
660 }
661
662 static void __print_link_stats(FILE *fp, struct rtattr *tb[])
663 {
664 const struct rtattr *carrier_changes = tb[IFLA_CARRIER_CHANGES];
665 struct rtnl_link_stats64 _s, *s = &_s;
666 int ret;
667
668 ret = get_rtnl_link_stats_rta(s, tb);
669 if (ret < 0)
670 return;
671
672 if (is_json_context()) {
673 open_json_object((ret == sizeof(*s)) ? "stats64" : "stats");
674
675 /* RX stats */
676 open_json_object("rx");
677 print_u64(PRINT_JSON, "bytes", NULL, s->rx_bytes);
678 print_u64(PRINT_JSON, "packets", NULL, s->rx_packets);
679 print_u64(PRINT_JSON, "errors", NULL, s->rx_errors);
680 print_u64(PRINT_JSON, "dropped", NULL, s->rx_dropped);
681 print_u64(PRINT_JSON, "over_errors", NULL, s->rx_over_errors);
682 print_u64(PRINT_JSON, "multicast", NULL, s->multicast);
683 if (s->rx_compressed)
684 print_u64(PRINT_JSON,
685 "compressed", NULL, s->rx_compressed);
686
687 /* RX error stats */
688 if (show_stats > 1) {
689 print_u64(PRINT_JSON,
690 "length_errors",
691 NULL, s->rx_length_errors);
692 print_u64(PRINT_JSON,
693 "crc_errors",
694 NULL, s->rx_crc_errors);
695 print_u64(PRINT_JSON,
696 "frame_errors",
697 NULL, s->rx_frame_errors);
698 print_u64(PRINT_JSON,
699 "fifo_errors",
700 NULL, s->rx_fifo_errors);
701 print_u64(PRINT_JSON,
702 "missed_errors",
703 NULL, s->rx_missed_errors);
704 if (s->rx_nohandler)
705 print_u64(PRINT_JSON,
706 "nohandler", NULL, s->rx_nohandler);
707 }
708 close_json_object();
709
710 /* TX stats */
711 open_json_object("tx");
712 print_u64(PRINT_JSON, "bytes", NULL, s->tx_bytes);
713 print_u64(PRINT_JSON, "packets", NULL, s->tx_packets);
714 print_u64(PRINT_JSON, "errors", NULL, s->tx_errors);
715 print_u64(PRINT_JSON, "dropped", NULL, s->tx_dropped);
716 print_u64(PRINT_JSON,
717 "carrier_errors",
718 NULL, s->tx_carrier_errors);
719 print_u64(PRINT_JSON, "collisions", NULL, s->collisions);
720 if (s->tx_compressed)
721 print_u64(PRINT_JSON,
722 "compressed", NULL, s->tx_compressed);
723
724 /* TX error stats */
725 if (show_stats > 1) {
726 print_u64(PRINT_JSON,
727 "aborted_errors",
728 NULL, s->tx_aborted_errors);
729 print_u64(PRINT_JSON,
730 "fifo_errors",
731 NULL, s->tx_fifo_errors);
732 print_u64(PRINT_JSON,
733 "window_errors",
734 NULL, s->tx_window_errors);
735 print_u64(PRINT_JSON,
736 "heartbeat_errors",
737 NULL, s->tx_heartbeat_errors);
738 if (carrier_changes)
739 print_u64(PRINT_JSON, "carrier_changes", NULL,
740 rta_getattr_u32(carrier_changes));
741 }
742
743 close_json_object();
744 close_json_object();
745 } else {
746 /* RX stats */
747 fprintf(fp, " RX: bytes packets errors dropped missed mcast %s%s",
748 s->rx_compressed ? "compressed" : "", _SL_);
749
750 fprintf(fp, " ");
751 print_num(fp, 10, s->rx_bytes);
752 print_num(fp, 8, s->rx_packets);
753 print_num(fp, 7, s->rx_errors);
754 print_num(fp, 7, s->rx_dropped);
755 print_num(fp, 7, s->rx_missed_errors);
756 print_num(fp, 7, s->multicast);
757 if (s->rx_compressed)
758 print_num(fp, 7, s->rx_compressed);
759
760 /* RX error stats */
761 if (show_stats > 1) {
762 fprintf(fp, "%s", _SL_);
763 fprintf(fp, " RX errors: length crc frame fifo overrun%s%s",
764 s->rx_nohandler ? " nohandler" : "", _SL_);
765 fprintf(fp, " ");
766 print_num(fp, 8, s->rx_length_errors);
767 print_num(fp, 7, s->rx_crc_errors);
768 print_num(fp, 7, s->rx_frame_errors);
769 print_num(fp, 7, s->rx_fifo_errors);
770 print_num(fp, 7, s->rx_over_errors);
771 if (s->rx_nohandler)
772 print_num(fp, 7, s->rx_nohandler);
773 }
774 fprintf(fp, "%s", _SL_);
775
776 /* TX stats */
777 fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
778 s->tx_compressed ? "compressed" : "", _SL_);
779
780 fprintf(fp, " ");
781 print_num(fp, 10, s->tx_bytes);
782 print_num(fp, 8, s->tx_packets);
783 print_num(fp, 7, s->tx_errors);
784 print_num(fp, 7, s->tx_dropped);
785 print_num(fp, 7, s->tx_carrier_errors);
786 print_num(fp, 7, s->collisions);
787 if (s->tx_compressed)
788 print_num(fp, 7, s->tx_compressed);
789
790 /* TX error stats */
791 if (show_stats > 1) {
792 fprintf(fp, "%s", _SL_);
793 fprintf(fp, " TX errors: aborted fifo window heartbeat");
794 if (carrier_changes)
795 fprintf(fp, " transns");
796 fprintf(fp, "%s", _SL_);
797
798 fprintf(fp, " ");
799 print_num(fp, 8, s->tx_aborted_errors);
800 print_num(fp, 7, s->tx_fifo_errors);
801 print_num(fp, 7, s->tx_window_errors);
802 print_num(fp, 7, s->tx_heartbeat_errors);
803 if (carrier_changes)
804 print_num(fp, 7,
805 rta_getattr_u32(carrier_changes));
806 }
807 }
808 }
809
810 static void print_link_stats(FILE *fp, struct nlmsghdr *n)
811 {
812 struct ifinfomsg *ifi = NLMSG_DATA(n);
813 struct rtattr *tb[IFLA_MAX+1];
814
815 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi),
816 n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
817 __print_link_stats(fp, tb);
818 print_nl();
819 }
820
821 static int print_linkinfo_brief(FILE *fp, const char *name,
822 const struct ifinfomsg *ifi,
823 struct rtattr *tb[])
824 {
825 unsigned int m_flag = 0;
826
827 m_flag = print_name_and_link("%-16s ", name, tb);
828
829 if (tb[IFLA_OPERSTATE])
830 print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
831
832 if (filter.family == AF_PACKET) {
833 SPRINT_BUF(b1);
834
835 if (tb[IFLA_ADDRESS]) {
836 print_color_string(PRINT_ANY, COLOR_MAC,
837 "address", "%s ",
838 ll_addr_n2a(
839 RTA_DATA(tb[IFLA_ADDRESS]),
840 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
841 ifi->ifi_type,
842 b1, sizeof(b1)));
843 }
844 }
845
846 if (filter.family == AF_PACKET) {
847 print_link_flags(fp, ifi->ifi_flags, m_flag);
848 print_string(PRINT_FP, NULL, "%s", "\n");
849 }
850
851 fflush(fp);
852 return 0;
853 }
854
855 static const char *link_events[] = {
856 [IFLA_EVENT_NONE] = "NONE",
857 [IFLA_EVENT_REBOOT] = "REBOOT",
858 [IFLA_EVENT_FEATURES] = "FEATURE CHANGE",
859 [IFLA_EVENT_BONDING_FAILOVER] = "BONDING FAILOVER",
860 [IFLA_EVENT_NOTIFY_PEERS] = "NOTIFY PEERS",
861 [IFLA_EVENT_IGMP_RESEND] = "RESEND IGMP",
862 [IFLA_EVENT_BONDING_OPTIONS] = "BONDING OPTION"
863 };
864
865 static void print_link_event(FILE *f, __u32 event)
866 {
867 if (event >= ARRAY_SIZE(link_events))
868 print_int(PRINT_ANY, "event", "event %d ", event);
869 else {
870 if (event)
871 print_string(PRINT_ANY,
872 "event", "event %s ",
873 link_events[event]);
874 }
875 }
876
877 static void print_proto_down(FILE *f, struct rtattr *tb[])
878 {
879 struct rtattr *preason[IFLA_PROTO_DOWN_REASON_MAX+1];
880
881 if (tb[IFLA_PROTO_DOWN]) {
882 if (rta_getattr_u8(tb[IFLA_PROTO_DOWN]))
883 print_bool(PRINT_ANY,
884 "proto_down", " protodown on ", true);
885 }
886
887 if (tb[IFLA_PROTO_DOWN_REASON]) {
888 char buf[255];
889 __u32 reason;
890 int i, start = 1;
891
892 parse_rtattr_nested(preason, IFLA_PROTO_DOWN_REASON_MAX,
893 tb[IFLA_PROTO_DOWN_REASON]);
894 if (!tb[IFLA_PROTO_DOWN_REASON_VALUE])
895 return;
896
897 reason = rta_getattr_u8(preason[IFLA_PROTO_DOWN_REASON_VALUE]);
898 if (!reason)
899 return;
900
901 open_json_array(PRINT_ANY,
902 is_json_context() ? "proto_down_reason" : "protodown_reason <");
903 for (i = 0; reason; i++, reason >>= 1) {
904 if (reason & 0x1) {
905 if (protodown_reason_n2a(i, buf, sizeof(buf)))
906 break;
907 print_string(PRINT_ANY, NULL,
908 start ? "%s" : ",%s", buf);
909 start = 0;
910 }
911 }
912 close_json_array(PRINT_ANY, ">");
913 }
914 }
915
916 int print_linkinfo(struct nlmsghdr *n, void *arg)
917 {
918 FILE *fp = (FILE *)arg;
919 struct ifinfomsg *ifi = NLMSG_DATA(n);
920 struct rtattr *tb[IFLA_MAX+1];
921 int len = n->nlmsg_len;
922 const char *name;
923 unsigned int m_flag = 0;
924 SPRINT_BUF(b1);
925
926 if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
927 return 0;
928
929 len -= NLMSG_LENGTH(sizeof(*ifi));
930 if (len < 0)
931 return -1;
932
933 if (filter.ifindex && ifi->ifi_index != filter.ifindex)
934 return -1;
935 if (filter.up && !(ifi->ifi_flags&IFF_UP))
936 return -1;
937
938 parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);
939
940 name = get_ifname_rta(ifi->ifi_index, tb[IFLA_IFNAME]);
941 if (!name)
942 return -1;
943
944 if (filter.label)
945 return 0;
946
947 if (tb[IFLA_GROUP]) {
948 int group = rta_getattr_u32(tb[IFLA_GROUP]);
949
950 if (filter.group != -1 && group != filter.group)
951 return -1;
952 }
953
954 if (tb[IFLA_MASTER]) {
955 int master = rta_getattr_u32(tb[IFLA_MASTER]);
956
957 if (filter.master > 0 && master != filter.master)
958 return -1;
959 } else if (filter.master > 0)
960 return -1;
961
962 if (filter.kind && match_link_kind(tb, filter.kind, 0))
963 return -1;
964
965 if (filter.slave_kind && match_link_kind(tb, filter.slave_kind, 1))
966 return -1;
967
968 if (n->nlmsg_type == RTM_DELLINK)
969 print_bool(PRINT_ANY, "deleted", "Deleted ", true);
970
971 if (brief)
972 return print_linkinfo_brief(fp, name, ifi, tb);
973
974 print_int(PRINT_ANY, "ifindex", "%d: ", ifi->ifi_index);
975
976 m_flag = print_name_and_link("%s: ", name, tb);
977 print_link_flags(fp, ifi->ifi_flags, m_flag);
978
979 if (tb[IFLA_MTU])
980 print_int(PRINT_ANY,
981 "mtu", "mtu %u ",
982 rta_getattr_u32(tb[IFLA_MTU]));
983 if (tb[IFLA_XDP])
984 xdp_dump(fp, tb[IFLA_XDP], do_link, false);
985 if (tb[IFLA_QDISC])
986 print_string(PRINT_ANY,
987 "qdisc",
988 "qdisc %s ",
989 rta_getattr_str(tb[IFLA_QDISC]));
990 if (tb[IFLA_MASTER]) {
991 int master = rta_getattr_u32(tb[IFLA_MASTER]);
992
993 print_string(PRINT_ANY,
994 "master", "master %s ",
995 ll_index_to_name(master));
996 }
997
998 if (tb[IFLA_OPERSTATE])
999 print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
1000
1001 if (do_link && tb[IFLA_LINKMODE])
1002 print_linkmode(fp, tb[IFLA_LINKMODE]);
1003
1004 if (tb[IFLA_GROUP]) {
1005 int group = rta_getattr_u32(tb[IFLA_GROUP]);
1006
1007 print_string(PRINT_ANY,
1008 "group",
1009 "group %s ",
1010 rtnl_group_n2a(group, b1, sizeof(b1)));
1011 }
1012
1013 if (filter.showqueue)
1014 print_queuelen(fp, tb);
1015
1016 if (tb[IFLA_EVENT])
1017 print_link_event(fp, rta_getattr_u32(tb[IFLA_EVENT]));
1018
1019 if (!filter.family || filter.family == AF_PACKET || show_details) {
1020 print_nl();
1021 print_string(PRINT_ANY,
1022 "link_type",
1023 " link/%s ",
1024 ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
1025 if (tb[IFLA_ADDRESS]) {
1026 print_color_string(PRINT_ANY,
1027 COLOR_MAC,
1028 "address",
1029 "%s",
1030 ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
1031 RTA_PAYLOAD(tb[IFLA_ADDRESS]),
1032 ifi->ifi_type,
1033 b1, sizeof(b1)));
1034 }
1035 if (tb[IFLA_BROADCAST]) {
1036 if (ifi->ifi_flags&IFF_POINTOPOINT) {
1037 print_string(PRINT_FP, NULL, " peer ", NULL);
1038 print_bool(PRINT_JSON,
1039 "link_pointtopoint", NULL, true);
1040 } else {
1041 print_string(PRINT_FP, NULL, " brd ", NULL);
1042 }
1043 print_color_string(PRINT_ANY,
1044 COLOR_MAC,
1045 "broadcast",
1046 "%s",
1047 ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
1048 RTA_PAYLOAD(tb[IFLA_BROADCAST]),
1049 ifi->ifi_type,
1050 b1, sizeof(b1)));
1051 }
1052 if (tb[IFLA_PERM_ADDRESS]) {
1053 unsigned int len = RTA_PAYLOAD(tb[IFLA_PERM_ADDRESS]);
1054
1055 if (!tb[IFLA_ADDRESS] ||
1056 RTA_PAYLOAD(tb[IFLA_ADDRESS]) != len ||
1057 memcmp(RTA_DATA(tb[IFLA_PERM_ADDRESS]),
1058 RTA_DATA(tb[IFLA_ADDRESS]), len)) {
1059 print_string(PRINT_FP, NULL, " permaddr ", NULL);
1060 print_color_string(PRINT_ANY,
1061 COLOR_MAC,
1062 "permaddr",
1063 "%s",
1064 ll_addr_n2a(RTA_DATA(tb[IFLA_PERM_ADDRESS]),
1065 RTA_PAYLOAD(tb[IFLA_PERM_ADDRESS]),
1066 ifi->ifi_type,
1067 b1, sizeof(b1)));
1068 }
1069 }
1070 }
1071
1072 if (tb[IFLA_LINK_NETNSID]) {
1073 int id = rta_getattr_u32(tb[IFLA_LINK_NETNSID]);
1074
1075 if (is_json_context()) {
1076 print_int(PRINT_JSON, "link_netnsid", NULL, id);
1077 } else {
1078 if (id >= 0) {
1079 char *name = get_name_from_nsid(id);
1080
1081 if (name)
1082 print_string(PRINT_FP, NULL,
1083 " link-netns %s", name);
1084 else
1085 print_int(PRINT_FP, NULL,
1086 " link-netnsid %d", id);
1087 } else
1088 print_string(PRINT_FP, NULL,
1089 " link-netnsid %s", "unknown");
1090 }
1091 }
1092
1093 if (tb[IFLA_NEW_NETNSID]) {
1094 int id = rta_getattr_u32(tb[IFLA_NEW_NETNSID]);
1095 char *name = get_name_from_nsid(id);
1096
1097 if (name)
1098 print_string(PRINT_FP, NULL, " new-netns %s", name);
1099 else
1100 print_int(PRINT_FP, NULL, " new-netnsid %d", id);
1101 }
1102 if (tb[IFLA_NEW_IFINDEX]) {
1103 int id = rta_getattr_u32(tb[IFLA_NEW_IFINDEX]);
1104
1105 print_int(PRINT_FP, NULL, " new-ifindex %d", id);
1106 }
1107
1108 if (tb[IFLA_PROTO_DOWN])
1109 print_proto_down(fp, tb);
1110
1111 if (show_details) {
1112 if (tb[IFLA_PROMISCUITY])
1113 print_uint(PRINT_ANY,
1114 "promiscuity",
1115 " promiscuity %u ",
1116 rta_getattr_u32(tb[IFLA_PROMISCUITY]));
1117
1118 if (tb[IFLA_MIN_MTU])
1119 print_uint(PRINT_ANY,
1120 "min_mtu", "minmtu %u ",
1121 rta_getattr_u32(tb[IFLA_MIN_MTU]));
1122
1123 if (tb[IFLA_MAX_MTU])
1124 print_uint(PRINT_ANY,
1125 "max_mtu", "maxmtu %u ",
1126 rta_getattr_u32(tb[IFLA_MAX_MTU]));
1127
1128 if (tb[IFLA_LINKINFO])
1129 print_linktype(fp, tb[IFLA_LINKINFO]);
1130
1131 if (do_link && tb[IFLA_AF_SPEC])
1132 print_af_spec(fp, tb[IFLA_AF_SPEC]);
1133
1134 if (tb[IFLA_NUM_TX_QUEUES])
1135 print_uint(PRINT_ANY,
1136 "num_tx_queues",
1137 "numtxqueues %u ",
1138 rta_getattr_u32(tb[IFLA_NUM_TX_QUEUES]));
1139
1140 if (tb[IFLA_NUM_RX_QUEUES])
1141 print_uint(PRINT_ANY,
1142 "num_rx_queues",
1143 "numrxqueues %u ",
1144 rta_getattr_u32(tb[IFLA_NUM_RX_QUEUES]));
1145
1146 if (tb[IFLA_GSO_MAX_SIZE])
1147 print_uint(PRINT_ANY,
1148 "gso_max_size",
1149 "gso_max_size %u ",
1150 rta_getattr_u32(tb[IFLA_GSO_MAX_SIZE]));
1151
1152 if (tb[IFLA_GSO_MAX_SEGS])
1153 print_uint(PRINT_ANY,
1154 "gso_max_segs",
1155 "gso_max_segs %u ",
1156 rta_getattr_u32(tb[IFLA_GSO_MAX_SEGS]));
1157
1158 if (tb[IFLA_PHYS_PORT_NAME])
1159 print_string(PRINT_ANY,
1160 "phys_port_name",
1161 "portname %s ",
1162 rta_getattr_str(tb[IFLA_PHYS_PORT_NAME]));
1163
1164 if (tb[IFLA_PHYS_PORT_ID]) {
1165 print_string(PRINT_ANY,
1166 "phys_port_id",
1167 "portid %s ",
1168 hexstring_n2a(
1169 RTA_DATA(tb[IFLA_PHYS_PORT_ID]),
1170 RTA_PAYLOAD(tb[IFLA_PHYS_PORT_ID]),
1171 b1, sizeof(b1)));
1172 }
1173
1174 if (tb[IFLA_PHYS_SWITCH_ID]) {
1175 print_string(PRINT_ANY,
1176 "phys_switch_id",
1177 "switchid %s ",
1178 hexstring_n2a(RTA_DATA(tb[IFLA_PHYS_SWITCH_ID]),
1179 RTA_PAYLOAD(tb[IFLA_PHYS_SWITCH_ID]),
1180 b1, sizeof(b1)));
1181 }
1182 }
1183
1184 if ((do_link || show_details) && tb[IFLA_IFALIAS]) {
1185 print_string(PRINT_FP, NULL, "%s ", _SL_);
1186 print_string(PRINT_ANY,
1187 "ifalias",
1188 "alias %s",
1189 rta_getattr_str(tb[IFLA_IFALIAS]));
1190 }
1191
1192 if ((do_link || show_details) && tb[IFLA_XDP])
1193 xdp_dump(fp, tb[IFLA_XDP], true, true);
1194
1195 if (do_link && show_stats) {
1196 print_nl();
1197 __print_link_stats(fp, tb);
1198 }
1199
1200 if ((do_link || show_details) && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
1201 struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
1202 int rem = RTA_PAYLOAD(vflist);
1203
1204 open_json_array(PRINT_JSON, "vfinfo_list");
1205 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
1206 open_json_object(NULL);
1207 print_vfinfo(fp, ifi, i);
1208 close_json_object();
1209 }
1210 close_json_array(PRINT_JSON, NULL);
1211 }
1212
1213 if (tb[IFLA_PROP_LIST]) {
1214 struct rtattr *i, *proplist = tb[IFLA_PROP_LIST];
1215 int rem = RTA_PAYLOAD(proplist);
1216
1217 open_json_array(PRINT_JSON, "altnames");
1218 for (i = RTA_DATA(proplist); RTA_OK(i, rem);
1219 i = RTA_NEXT(i, rem)) {
1220 if (i->rta_type != IFLA_ALT_IFNAME)
1221 continue;
1222 print_string(PRINT_FP, NULL, "%s altname ", _SL_);
1223 print_string(PRINT_ANY, NULL,
1224 "%s", rta_getattr_str(i));
1225 }
1226 close_json_array(PRINT_JSON, NULL);
1227 }
1228
1229 print_string(PRINT_FP, NULL, "%s", "\n");
1230 fflush(fp);
1231 return 1;
1232 }
1233
1234 static int flush_update(void)
1235 {
1236
1237 /*
1238 * Note that the kernel may delete multiple addresses for one
1239 * delete request (e.g. if ipv4 address promotion is disabled).
1240 * Since a flush operation is really a series of delete requests
1241 * its possible that we may request an address delete that has
1242 * already been done by the kernel. Therefore, ignore EADDRNOTAVAIL
1243 * errors returned from a flush request
1244 */
1245 if ((rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) &&
1246 (errno != EADDRNOTAVAIL)) {
1247 perror("Failed to send flush request");
1248 return -1;
1249 }
1250 filter.flushp = 0;
1251 return 0;
1252 }
1253
1254 static int set_lifetime(unsigned int *lifetime, char *argv)
1255 {
1256 if (strcmp(argv, "forever") == 0)
1257 *lifetime = INFINITY_LIFE_TIME;
1258 else if (get_u32(lifetime, argv, 0))
1259 return -1;
1260
1261 return 0;
1262 }
1263
1264 static unsigned int get_ifa_flags(struct ifaddrmsg *ifa,
1265 struct rtattr *ifa_flags_attr)
1266 {
1267 return ifa_flags_attr ? rta_getattr_u32(ifa_flags_attr) :
1268 ifa->ifa_flags;
1269 }
1270
1271 /* Mapping from argument to address flag mask and attributes */
1272 static const struct ifa_flag_data_t {
1273 const char *name;
1274 unsigned long mask;
1275 bool readonly;
1276 bool v6only;
1277 } ifa_flag_data[] = {
1278 { .name = "secondary", .mask = IFA_F_SECONDARY, .readonly = true, .v6only = false},
1279 { .name = "temporary", .mask = IFA_F_SECONDARY, .readonly = true, .v6only = false},
1280 { .name = "nodad", .mask = IFA_F_NODAD, .readonly = false, .v6only = true},
1281 { .name = "optimistic", .mask = IFA_F_OPTIMISTIC, .readonly = false, .v6only = true},
1282 { .name = "dadfailed", .mask = IFA_F_DADFAILED, .readonly = true, .v6only = true},
1283 { .name = "home", .mask = IFA_F_HOMEADDRESS, .readonly = false, .v6only = true},
1284 { .name = "deprecated", .mask = IFA_F_DEPRECATED, .readonly = true, .v6only = true},
1285 { .name = "tentative", .mask = IFA_F_TENTATIVE, .readonly = true, .v6only = true},
1286 { .name = "permanent", .mask = IFA_F_PERMANENT, .readonly = true, .v6only = true},
1287 { .name = "mngtmpaddr", .mask = IFA_F_MANAGETEMPADDR, .readonly = false, .v6only = true},
1288 { .name = "noprefixroute", .mask = IFA_F_NOPREFIXROUTE, .readonly = false, .v6only = false},
1289 { .name = "autojoin", .mask = IFA_F_MCAUTOJOIN, .readonly = false, .v6only = false},
1290 { .name = "stable-privacy", .mask = IFA_F_STABLE_PRIVACY, .readonly = true, .v6only = true},
1291 };
1292
1293 /* Returns a pointer to the data structure for a particular interface flag, or null if no flag could be found */
1294 static const struct ifa_flag_data_t* lookup_flag_data_by_name(const char* flag_name) {
1295 unsigned int i;
1296
1297 for (i = 0; i < ARRAY_SIZE(ifa_flag_data); ++i) {
1298 if (strcmp(flag_name, ifa_flag_data[i].name) == 0)
1299 return &ifa_flag_data[i];
1300 }
1301 return NULL;
1302 }
1303
1304 static void print_ifa_flags(FILE *fp, const struct ifaddrmsg *ifa,
1305 unsigned int flags)
1306 {
1307 unsigned int i;
1308
1309 for (i = 0; i < ARRAY_SIZE(ifa_flag_data); i++) {
1310 const struct ifa_flag_data_t* flag_data = &ifa_flag_data[i];
1311
1312 if (flag_data->mask == IFA_F_PERMANENT) {
1313 if (!(flags & flag_data->mask))
1314 print_bool(PRINT_ANY,
1315 "dynamic", "dynamic ", true);
1316 } else if (flags & flag_data->mask) {
1317 if (flag_data->mask == IFA_F_SECONDARY &&
1318 ifa->ifa_family == AF_INET6) {
1319 print_bool(PRINT_ANY,
1320 "temporary", "temporary ", true);
1321 } else {
1322 print_string(PRINT_FP, NULL,
1323 "%s ", flag_data->name);
1324 print_bool(PRINT_JSON,
1325 flag_data->name, NULL, true);
1326 }
1327 }
1328
1329 flags &= ~flag_data->mask;
1330 }
1331
1332 if (flags) {
1333 if (is_json_context()) {
1334 SPRINT_BUF(b1);
1335
1336 snprintf(b1, sizeof(b1), "%02x", flags);
1337 print_string(PRINT_JSON, "ifa_flags", NULL, b1);
1338 } else {
1339 fprintf(fp, "flags %02x ", flags);
1340 }
1341 }
1342
1343 }
1344
1345 static int get_filter(const char *arg)
1346 {
1347 bool inv = false;
1348
1349 if (arg[0] == '-') {
1350 inv = true;
1351 arg++;
1352 }
1353
1354 /* Special cases */
1355 if (strcmp(arg, "dynamic") == 0) {
1356 inv = !inv;
1357 arg = "permanent";
1358 } else if (strcmp(arg, "primary") == 0) {
1359 inv = !inv;
1360 arg = "secondary";
1361 }
1362
1363 const struct ifa_flag_data_t* flag_data = lookup_flag_data_by_name(arg);
1364 if (flag_data == NULL)
1365 return -1;
1366
1367 if (inv)
1368 filter.flags &= ~flag_data->mask;
1369 else
1370 filter.flags |= flag_data->mask;
1371 filter.flagmask |= flag_data->mask;
1372 return 0;
1373 }
1374
1375 static int ifa_label_match_rta(int ifindex, const struct rtattr *rta)
1376 {
1377 const char *label;
1378
1379 if (!filter.label)
1380 return 0;
1381
1382 if (rta)
1383 label = RTA_DATA(rta);
1384 else
1385 label = ll_index_to_name(ifindex);
1386
1387 return fnmatch(filter.label, label, 0);
1388 }
1389
1390 int print_addrinfo(struct nlmsghdr *n, void *arg)
1391 {
1392 FILE *fp = arg;
1393 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1394 int len = n->nlmsg_len;
1395 unsigned int ifa_flags;
1396 struct rtattr *rta_tb[IFA_MAX+1];
1397
1398 SPRINT_BUF(b1);
1399
1400 if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
1401 return 0;
1402 len -= NLMSG_LENGTH(sizeof(*ifa));
1403 if (len < 0) {
1404 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
1405 return -1;
1406 }
1407
1408 if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
1409 return 0;
1410
1411 parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa),
1412 n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
1413
1414 ifa_flags = get_ifa_flags(ifa, rta_tb[IFA_FLAGS]);
1415
1416 if (!rta_tb[IFA_LOCAL])
1417 rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
1418 if (!rta_tb[IFA_ADDRESS])
1419 rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
1420
1421 if (filter.ifindex && filter.ifindex != ifa->ifa_index)
1422 return 0;
1423 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
1424 return 0;
1425 if ((filter.flags ^ ifa_flags) & filter.flagmask)
1426 return 0;
1427
1428 if (filter.family && filter.family != ifa->ifa_family)
1429 return 0;
1430
1431 if (ifa_label_match_rta(ifa->ifa_index, rta_tb[IFA_LABEL]))
1432 return 0;
1433
1434 if (inet_addr_match_rta(&filter.pfx, rta_tb[IFA_LOCAL]))
1435 return 0;
1436
1437 if (filter.flushb) {
1438 struct nlmsghdr *fn;
1439
1440 if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
1441 if (flush_update())
1442 return -1;
1443 }
1444 fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp));
1445 memcpy(fn, n, n->nlmsg_len);
1446 fn->nlmsg_type = RTM_DELADDR;
1447 fn->nlmsg_flags = NLM_F_REQUEST;
1448 fn->nlmsg_seq = ++rth.seq;
1449 filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb;
1450 filter.flushed++;
1451 if (show_stats < 2)
1452 return 0;
1453 }
1454
1455 if (n->nlmsg_type == RTM_DELADDR)
1456 print_bool(PRINT_ANY, "deleted", "Deleted ", true);
1457
1458 if (!brief) {
1459 const char *name;
1460
1461 if (filter.oneline || filter.flushb) {
1462 const char *dev = ll_index_to_name(ifa->ifa_index);
1463
1464 if (is_json_context()) {
1465 print_int(PRINT_JSON,
1466 "index", NULL, ifa->ifa_index);
1467 print_string(PRINT_JSON, "dev", NULL, dev);
1468 } else {
1469 fprintf(fp, "%u: %s", ifa->ifa_index, dev);
1470 }
1471 }
1472
1473 name = family_name(ifa->ifa_family);
1474 if (*name != '?') {
1475 print_string(PRINT_ANY, "family", " %s ", name);
1476 } else {
1477 print_int(PRINT_ANY, "family_index", " family %d ",
1478 ifa->ifa_family);
1479 }
1480 }
1481
1482 if (rta_tb[IFA_LOCAL]) {
1483 print_color_string(PRINT_ANY,
1484 ifa_family_color(ifa->ifa_family),
1485 "local", "%s",
1486 format_host_rta(ifa->ifa_family,
1487 rta_tb[IFA_LOCAL]));
1488 if (rta_tb[IFA_ADDRESS] &&
1489 memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]),
1490 RTA_DATA(rta_tb[IFA_LOCAL]),
1491 ifa->ifa_family == AF_INET ? 4 : 16)) {
1492 print_string(PRINT_FP, NULL, " %s ", "peer");
1493 print_color_string(PRINT_ANY,
1494 ifa_family_color(ifa->ifa_family),
1495 "address",
1496 "%s",
1497 format_host_rta(ifa->ifa_family,
1498 rta_tb[IFA_ADDRESS]));
1499 }
1500 print_int(PRINT_ANY, "prefixlen", "/%d ", ifa->ifa_prefixlen);
1501
1502 if (rta_tb[IFA_RT_PRIORITY])
1503 print_uint(PRINT_ANY, "metric", "metric %u ",
1504 rta_getattr_u32(rta_tb[IFA_RT_PRIORITY]));
1505 }
1506
1507 if (brief)
1508 goto brief_exit;
1509
1510 if (rta_tb[IFA_BROADCAST]) {
1511 print_string(PRINT_FP, NULL, "%s ", "brd");
1512 print_color_string(PRINT_ANY,
1513 ifa_family_color(ifa->ifa_family),
1514 "broadcast",
1515 "%s ",
1516 format_host_rta(ifa->ifa_family,
1517 rta_tb[IFA_BROADCAST]));
1518 }
1519
1520 if (rta_tb[IFA_ANYCAST]) {
1521 print_string(PRINT_FP, NULL, "%s ", "any");
1522 print_color_string(PRINT_ANY,
1523 ifa_family_color(ifa->ifa_family),
1524 "anycast",
1525 "%s ",
1526 format_host_rta(ifa->ifa_family,
1527 rta_tb[IFA_ANYCAST]));
1528 }
1529
1530 print_string(PRINT_ANY,
1531 "scope",
1532 "scope %s ",
1533 rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
1534
1535 print_ifa_flags(fp, ifa, ifa_flags);
1536
1537 if (rta_tb[IFA_LABEL])
1538 print_string(PRINT_ANY,
1539 "label",
1540 "%s",
1541 rta_getattr_str(rta_tb[IFA_LABEL]));
1542
1543 if (rta_tb[IFA_CACHEINFO]) {
1544 struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
1545
1546 print_nl();
1547 print_string(PRINT_FP, NULL, " valid_lft ", NULL);
1548
1549 if (ci->ifa_valid == INFINITY_LIFE_TIME) {
1550 print_uint(PRINT_JSON,
1551 "valid_life_time",
1552 NULL, INFINITY_LIFE_TIME);
1553 print_string(PRINT_FP, NULL, "%s", "forever");
1554 } else {
1555 print_uint(PRINT_ANY,
1556 "valid_life_time", "%usec", ci->ifa_valid);
1557 }
1558
1559 print_string(PRINT_FP, NULL, " preferred_lft ", NULL);
1560 if (ci->ifa_prefered == INFINITY_LIFE_TIME) {
1561 print_uint(PRINT_JSON,
1562 "preferred_life_time",
1563 NULL, INFINITY_LIFE_TIME);
1564 print_string(PRINT_FP, NULL, "%s", "forever");
1565 } else {
1566 if (ifa_flags & IFA_F_DEPRECATED)
1567 print_int(PRINT_ANY,
1568 "preferred_life_time",
1569 "%dsec",
1570 ci->ifa_prefered);
1571 else
1572 print_uint(PRINT_ANY,
1573 "preferred_life_time",
1574 "%usec",
1575 ci->ifa_prefered);
1576 }
1577 }
1578 print_string(PRINT_FP, NULL, "%s", "\n");
1579 brief_exit:
1580 fflush(fp);
1581 return 0;
1582 }
1583
1584 static int print_selected_addrinfo(struct ifinfomsg *ifi,
1585 struct nlmsg_list *ainfo, FILE *fp)
1586 {
1587 open_json_array(PRINT_JSON, "addr_info");
1588 for ( ; ainfo ; ainfo = ainfo->next) {
1589 struct nlmsghdr *n = &ainfo->h;
1590 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1591
1592 if (n->nlmsg_type != RTM_NEWADDR)
1593 continue;
1594
1595 if (n->nlmsg_len < NLMSG_LENGTH(sizeof(*ifa)))
1596 return -1;
1597
1598 if (ifa->ifa_index != ifi->ifi_index ||
1599 (filter.family && filter.family != ifa->ifa_family))
1600 continue;
1601
1602 if (filter.up && !(ifi->ifi_flags&IFF_UP))
1603 continue;
1604
1605 open_json_object(NULL);
1606 print_addrinfo(n, fp);
1607 close_json_object();
1608 }
1609 close_json_array(PRINT_JSON, NULL);
1610
1611 if (brief) {
1612 print_string(PRINT_FP, NULL, "%s", "\n");
1613 fflush(fp);
1614 }
1615 return 0;
1616 }
1617
1618
1619 static int store_nlmsg(struct nlmsghdr *n, void *arg)
1620 {
1621 struct nlmsg_chain *lchain = (struct nlmsg_chain *)arg;
1622 struct nlmsg_list *h;
1623
1624 h = malloc(n->nlmsg_len+sizeof(void *));
1625 if (h == NULL)
1626 return -1;
1627
1628 memcpy(&h->h, n, n->nlmsg_len);
1629 h->next = NULL;
1630
1631 if (lchain->tail)
1632 lchain->tail->next = h;
1633 else
1634 lchain->head = h;
1635 lchain->tail = h;
1636
1637 ll_remember_index(n, NULL);
1638 return 0;
1639 }
1640
1641 static __u32 ipadd_dump_magic = 0x47361222;
1642
1643 static int ipadd_save_prep(void)
1644 {
1645 int ret;
1646
1647 if (isatty(STDOUT_FILENO)) {
1648 fprintf(stderr, "Not sending a binary stream to stdout\n");
1649 return -1;
1650 }
1651
1652 ret = write(STDOUT_FILENO, &ipadd_dump_magic, sizeof(ipadd_dump_magic));
1653 if (ret != sizeof(ipadd_dump_magic)) {
1654 fprintf(stderr, "Can't write magic to dump file\n");
1655 return -1;
1656 }
1657
1658 return 0;
1659 }
1660
1661 static int ipadd_dump_check_magic(void)
1662 {
1663 int ret;
1664 __u32 magic = 0;
1665
1666 if (isatty(STDIN_FILENO)) {
1667 fprintf(stderr, "Can't restore address dump from a terminal\n");
1668 return -1;
1669 }
1670
1671 ret = fread(&magic, sizeof(magic), 1, stdin);
1672 if (magic != ipadd_dump_magic) {
1673 fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
1674 return -1;
1675 }
1676
1677 return 0;
1678 }
1679
1680 static int save_nlmsg(struct nlmsghdr *n, void *arg)
1681 {
1682 int ret;
1683
1684 ret = write(STDOUT_FILENO, n, n->nlmsg_len);
1685 if ((ret > 0) && (ret != n->nlmsg_len)) {
1686 fprintf(stderr, "Short write while saving nlmsg\n");
1687 ret = -EIO;
1688 }
1689
1690 return ret == n->nlmsg_len ? 0 : ret;
1691 }
1692
1693 static int show_handler(struct rtnl_ctrl_data *ctrl,
1694 struct nlmsghdr *n, void *arg)
1695 {
1696 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1697
1698 open_json_object(NULL);
1699 print_int(PRINT_ANY, "index", "if%d:", ifa->ifa_index);
1700 print_nl();
1701 print_addrinfo(n, stdout);
1702 close_json_object();
1703 return 0;
1704 }
1705
1706 static int ipaddr_showdump(void)
1707 {
1708 int err;
1709
1710 if (ipadd_dump_check_magic())
1711 exit(-1);
1712
1713 new_json_obj(json);
1714 open_json_object(NULL);
1715 open_json_array(PRINT_JSON, "addr_info");
1716
1717 err = rtnl_from_file(stdin, &show_handler, NULL);
1718
1719 close_json_array(PRINT_JSON, NULL);
1720 close_json_object();
1721 delete_json_obj();
1722
1723 exit(err);
1724 }
1725
1726 static int restore_handler(struct rtnl_ctrl_data *ctrl,
1727 struct nlmsghdr *n, void *arg)
1728 {
1729 int ret;
1730
1731 n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
1732
1733 ll_init_map(&rth);
1734
1735 ret = rtnl_talk(&rth, n, NULL);
1736 if ((ret < 0) && (errno == EEXIST))
1737 ret = 0;
1738
1739 return ret;
1740 }
1741
1742 static int ipaddr_restore(void)
1743 {
1744 if (ipadd_dump_check_magic())
1745 exit(-1);
1746
1747 exit(rtnl_from_file(stdin, &restore_handler, NULL));
1748 }
1749
1750 void free_nlmsg_chain(struct nlmsg_chain *info)
1751 {
1752 struct nlmsg_list *l, *n;
1753
1754 for (l = info->head; l; l = n) {
1755 n = l->next;
1756 free(l);
1757 }
1758 }
1759
1760 static void ipaddr_filter(struct nlmsg_chain *linfo, struct nlmsg_chain *ainfo)
1761 {
1762 struct nlmsg_list *l, **lp;
1763
1764 lp = &linfo->head;
1765 while ((l = *lp) != NULL) {
1766 int ok = 0;
1767 int missing_net_address = 1;
1768 struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
1769 struct nlmsg_list *a;
1770
1771 for (a = ainfo->head; a; a = a->next) {
1772 struct nlmsghdr *n = &a->h;
1773 struct ifaddrmsg *ifa = NLMSG_DATA(n);
1774 struct rtattr *tb[IFA_MAX + 1];
1775 unsigned int ifa_flags;
1776
1777 if (ifa->ifa_index != ifi->ifi_index)
1778 continue;
1779 missing_net_address = 0;
1780 if (filter.family && filter.family != ifa->ifa_family)
1781 continue;
1782 if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
1783 continue;
1784
1785 parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
1786 ifa_flags = get_ifa_flags(ifa, tb[IFA_FLAGS]);
1787
1788 if ((filter.flags ^ ifa_flags) & filter.flagmask)
1789 continue;
1790
1791 if (ifa_label_match_rta(ifa->ifa_index, tb[IFA_LABEL]))
1792 continue;
1793
1794 if (!tb[IFA_LOCAL])
1795 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
1796 if (inet_addr_match_rta(&filter.pfx, tb[IFA_LOCAL]))
1797 continue;
1798
1799 ok = 1;
1800 break;
1801 }
1802 if (missing_net_address &&
1803 (filter.family == AF_UNSPEC || filter.family == AF_PACKET))
1804 ok = 1;
1805 if (!ok) {
1806 *lp = l->next;
1807 free(l);
1808 } else
1809 lp = &l->next;
1810 }
1811 }
1812
1813 static int ipaddr_dump_filter(struct nlmsghdr *nlh, int reqlen)
1814 {
1815 struct ifaddrmsg *ifa = NLMSG_DATA(nlh);
1816
1817 ifa->ifa_index = filter.ifindex;
1818
1819 return 0;
1820 }
1821
1822 static int ipaddr_flush(void)
1823 {
1824 int round = 0;
1825 char flushb[4096-512];
1826
1827 filter.flushb = flushb;
1828 filter.flushp = 0;
1829 filter.flushe = sizeof(flushb);
1830
1831 while ((max_flush_loops == 0) || (round < max_flush_loops)) {
1832 if (rtnl_addrdump_req(&rth, filter.family,
1833 ipaddr_dump_filter) < 0) {
1834 perror("Cannot send dump request");
1835 exit(1);
1836 }
1837 filter.flushed = 0;
1838 if (rtnl_dump_filter_nc(&rth, print_addrinfo,
1839 stdout, NLM_F_DUMP_INTR) < 0) {
1840 fprintf(stderr, "Flush terminated\n");
1841 exit(1);
1842 }
1843 if (filter.flushed == 0) {
1844 flush_done:
1845 if (show_stats) {
1846 if (round == 0)
1847 printf("Nothing to flush.\n");
1848 else
1849 printf("*** Flush is complete after %d round%s ***\n", round, round > 1?"s":"");
1850 }
1851 fflush(stdout);
1852 return 0;
1853 }
1854 round++;
1855 if (flush_update() < 0)
1856 return 1;
1857
1858 if (show_stats) {
1859 printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
1860 fflush(stdout);
1861 }
1862
1863 /* If we are flushing, and specifying primary, then we
1864 * want to flush only a single round. Otherwise, we'll
1865 * start flushing secondaries that were promoted to
1866 * primaries.
1867 */
1868 if (!(filter.flags & IFA_F_SECONDARY) && (filter.flagmask & IFA_F_SECONDARY))
1869 goto flush_done;
1870 }
1871 fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", max_flush_loops);
1872 fflush(stderr);
1873 return 1;
1874 }
1875
1876 static int iplink_filter_req(struct nlmsghdr *nlh, int reqlen)
1877 {
1878 int err;
1879
1880 err = addattr32(nlh, reqlen, IFLA_EXT_MASK, RTEXT_FILTER_VF);
1881 if (err)
1882 return err;
1883
1884 if (filter.master) {
1885 err = addattr32(nlh, reqlen, IFLA_MASTER, filter.master);
1886 if (err)
1887 return err;
1888 }
1889
1890 if (filter.kind) {
1891 struct rtattr *linkinfo;
1892
1893 linkinfo = addattr_nest(nlh, reqlen, IFLA_LINKINFO);
1894
1895 err = addattr_l(nlh, reqlen, IFLA_INFO_KIND, filter.kind,
1896 strlen(filter.kind));
1897 if (err)
1898 return err;
1899
1900 addattr_nest_end(nlh, linkinfo);
1901 }
1902
1903 return 0;
1904 }
1905
1906 static int ipaddr_link_get(int index, struct nlmsg_chain *linfo)
1907 {
1908 struct iplink_req req = {
1909 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
1910 .n.nlmsg_flags = NLM_F_REQUEST,
1911 .n.nlmsg_type = RTM_GETLINK,
1912 .i.ifi_family = filter.family,
1913 .i.ifi_index = index,
1914 };
1915 __u32 filt_mask = RTEXT_FILTER_VF;
1916 struct nlmsghdr *answer;
1917
1918 if (!show_stats)
1919 filt_mask |= RTEXT_FILTER_SKIP_STATS;
1920
1921 addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filt_mask);
1922
1923 if (rtnl_talk(&rth, &req.n, &answer) < 0) {
1924 perror("Cannot send link request");
1925 return 1;
1926 }
1927
1928 if (store_nlmsg(answer, linfo) < 0) {
1929 fprintf(stderr, "Failed to process link information\n");
1930 return 1;
1931 }
1932
1933 return 0;
1934 }
1935
1936 /* fills in linfo with link data and optionally ainfo with address info
1937 * caller can walk lists as desired and must call free_nlmsg_chain for
1938 * both when done
1939 */
1940 int ip_link_list(req_filter_fn_t filter_fn, struct nlmsg_chain *linfo)
1941 {
1942 if (rtnl_linkdump_req_filter_fn(&rth, preferred_family,
1943 filter_fn) < 0) {
1944 perror("Cannot send dump request");
1945 return 1;
1946 }
1947
1948 if (rtnl_dump_filter(&rth, store_nlmsg, linfo) < 0) {
1949 fprintf(stderr, "Dump terminated\n");
1950 return 1;
1951 }
1952
1953 return 0;
1954 }
1955
1956 static int ip_addr_list(struct nlmsg_chain *ainfo)
1957 {
1958 if (rtnl_addrdump_req(&rth, filter.family, ipaddr_dump_filter) < 0) {
1959 perror("Cannot send dump request");
1960 return 1;
1961 }
1962
1963 if (rtnl_dump_filter(&rth, store_nlmsg, ainfo) < 0) {
1964 fprintf(stderr, "Dump terminated\n");
1965 return 1;
1966 }
1967
1968 return 0;
1969 }
1970
1971 static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
1972 {
1973 struct nlmsg_chain linfo = { NULL, NULL};
1974 struct nlmsg_chain _ainfo = { NULL, NULL}, *ainfo = &_ainfo;
1975 struct nlmsg_list *l;
1976 char *filter_dev = NULL;
1977 int no_link = 0;
1978
1979 ipaddr_reset_filter(oneline, 0);
1980 filter.showqueue = 1;
1981 filter.family = preferred_family;
1982
1983 if (action == IPADD_FLUSH) {
1984 if (argc <= 0) {
1985 fprintf(stderr, "Flush requires arguments.\n");
1986
1987 return -1;
1988 }
1989 if (filter.family == AF_PACKET) {
1990 fprintf(stderr, "Cannot flush link addresses.\n");
1991 return -1;
1992 }
1993 }
1994
1995 while (argc > 0) {
1996 if (strcmp(*argv, "to") == 0) {
1997 NEXT_ARG();
1998 if (get_prefix(&filter.pfx, *argv, filter.family))
1999 invarg("invalid \"to\"\n", *argv);
2000 if (filter.family == AF_UNSPEC)
2001 filter.family = filter.pfx.family;
2002 } else if (strcmp(*argv, "scope") == 0) {
2003 unsigned int scope = 0;
2004
2005 NEXT_ARG();
2006 filter.scopemask = -1;
2007 if (rtnl_rtscope_a2n(&scope, *argv)) {
2008 if (strcmp(*argv, "all") != 0)
2009 invarg("invalid \"scope\"\n", *argv);
2010 scope = RT_SCOPE_NOWHERE;
2011 filter.scopemask = 0;
2012 }
2013 filter.scope = scope;
2014 } else if (strcmp(*argv, "up") == 0) {
2015 filter.up = 1;
2016 } else if (get_filter(*argv) == 0) {
2017
2018 } else if (strcmp(*argv, "label") == 0) {
2019 NEXT_ARG();
2020 filter.label = *argv;
2021 } else if (strcmp(*argv, "group") == 0) {
2022 NEXT_ARG();
2023 if (rtnl_group_a2n(&filter.group, *argv))
2024 invarg("Invalid \"group\" value\n", *argv);
2025 } else if (strcmp(*argv, "master") == 0) {
2026 int ifindex;
2027
2028 NEXT_ARG();
2029 ifindex = ll_name_to_index(*argv);
2030 if (!ifindex)
2031 invarg("Device does not exist\n", *argv);
2032 filter.master = ifindex;
2033 } else if (strcmp(*argv, "vrf") == 0) {
2034 int ifindex;
2035
2036 NEXT_ARG();
2037 ifindex = ll_name_to_index(*argv);
2038 if (!ifindex)
2039 invarg("Not a valid VRF name\n", *argv);
2040 if (!name_is_vrf(*argv))
2041 invarg("Not a valid VRF name\n", *argv);
2042 filter.master = ifindex;
2043 } else if (strcmp(*argv, "type") == 0) {
2044 int soff;
2045
2046 NEXT_ARG();
2047 soff = strlen(*argv) - strlen("_slave");
2048 if (!strcmp(*argv + soff, "_slave")) {
2049 (*argv)[soff] = '\0';
2050 filter.slave_kind = *argv;
2051 } else {
2052 filter.kind = *argv;
2053 }
2054 } else {
2055 if (strcmp(*argv, "dev") == 0)
2056 NEXT_ARG();
2057 else if (matches(*argv, "help") == 0)
2058 usage();
2059 if (filter_dev)
2060 duparg2("dev", *argv);
2061 filter_dev = *argv;
2062 }
2063 argv++; argc--;
2064 }
2065
2066 if (filter_dev) {
2067 filter.ifindex = ll_name_to_index(filter_dev);
2068 if (filter.ifindex <= 0) {
2069 fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
2070 return -1;
2071 }
2072 }
2073
2074 if (action == IPADD_FLUSH)
2075 return ipaddr_flush();
2076
2077 if (action == IPADD_SAVE) {
2078 if (ipadd_save_prep())
2079 exit(1);
2080
2081 if (rtnl_addrdump_req(&rth, preferred_family,
2082 ipaddr_dump_filter) < 0) {
2083 perror("Cannot send dump request");
2084 exit(1);
2085 }
2086
2087 if (rtnl_dump_filter(&rth, save_nlmsg, stdout) < 0) {
2088 fprintf(stderr, "Save terminated\n");
2089 exit(1);
2090 }
2091
2092 exit(0);
2093 }
2094
2095 /*
2096 * Initialize a json_writer and open an array object
2097 * if -json was specified.
2098 */
2099 new_json_obj(json);
2100
2101 /*
2102 * If only filter_dev present and none of the other
2103 * link filters are present, use RTM_GETLINK to get
2104 * the link device
2105 */
2106 if (filter_dev && filter.group == -1 && do_link == 1) {
2107 if (iplink_get(filter_dev, RTEXT_FILTER_VF) < 0) {
2108 perror("Cannot send link get request");
2109 delete_json_obj();
2110 exit(1);
2111 }
2112 delete_json_obj();
2113 goto out;
2114 }
2115
2116 if (filter.ifindex) {
2117 if (ipaddr_link_get(filter.ifindex, &linfo) != 0)
2118 goto out;
2119 } else {
2120 if (ip_link_list(iplink_filter_req, &linfo) != 0)
2121 goto out;
2122 }
2123
2124 if (filter.family != AF_PACKET) {
2125 if (filter.oneline)
2126 no_link = 1;
2127
2128 if (ip_addr_list(ainfo) != 0)
2129 goto out;
2130
2131 ipaddr_filter(&linfo, ainfo);
2132 }
2133
2134 for (l = linfo.head; l; l = l->next) {
2135 struct nlmsghdr *n = &l->h;
2136 struct ifinfomsg *ifi = NLMSG_DATA(n);
2137 int res = 0;
2138
2139 open_json_object(NULL);
2140 if (brief || !no_link)
2141 res = print_linkinfo(n, stdout);
2142 if (res >= 0 && filter.family != AF_PACKET)
2143 print_selected_addrinfo(ifi, ainfo->head, stdout);
2144 if (res > 0 && !do_link && show_stats)
2145 print_link_stats(stdout, n);
2146 close_json_object();
2147 }
2148 fflush(stdout);
2149
2150 out:
2151 free_nlmsg_chain(ainfo);
2152 free_nlmsg_chain(&linfo);
2153 delete_json_obj();
2154 return 0;
2155 }
2156
2157 static void
2158 ipaddr_loop_each_vf(struct rtattr *tb[], int vfnum, int *min, int *max)
2159 {
2160 struct rtattr *vflist = tb[IFLA_VFINFO_LIST];
2161 struct rtattr *i, *vf[IFLA_VF_MAX+1];
2162 struct ifla_vf_rate *vf_rate;
2163 int rem;
2164
2165 rem = RTA_PAYLOAD(vflist);
2166
2167 for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
2168 parse_rtattr_nested(vf, IFLA_VF_MAX, i);
2169
2170 if (!vf[IFLA_VF_RATE]) {
2171 fprintf(stderr, "VF min/max rate API not supported\n");
2172 exit(1);
2173 }
2174
2175 vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
2176 if (vf_rate->vf == vfnum) {
2177 *min = vf_rate->min_tx_rate;
2178 *max = vf_rate->max_tx_rate;
2179 return;
2180 }
2181 }
2182 fprintf(stderr, "Cannot find VF %d\n", vfnum);
2183 exit(1);
2184 }
2185
2186 void ipaddr_get_vf_rate(int vfnum, int *min, int *max, const char *dev)
2187 {
2188 struct nlmsg_chain linfo = { NULL, NULL};
2189 struct rtattr *tb[IFLA_MAX+1];
2190 struct ifinfomsg *ifi;
2191 struct nlmsg_list *l;
2192 struct nlmsghdr *n;
2193 int idx, len;
2194
2195 idx = ll_name_to_index(dev);
2196 if (idx == 0) {
2197 fprintf(stderr, "Device %s does not exist\n", dev);
2198 exit(1);
2199 }
2200
2201 if (rtnl_linkdump_req(&rth, AF_UNSPEC) < 0) {
2202 perror("Cannot send dump request");
2203 exit(1);
2204 }
2205 if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
2206 fprintf(stderr, "Dump terminated\n");
2207 exit(1);
2208 }
2209 for (l = linfo.head; l; l = l->next) {
2210 n = &l->h;
2211 ifi = NLMSG_DATA(n);
2212
2213 len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi));
2214 if (len < 0 || (idx && idx != ifi->ifi_index))
2215 continue;
2216
2217 parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
2218
2219 if ((tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF])) {
2220 ipaddr_loop_each_vf(tb, vfnum, min, max);
2221 return;
2222 }
2223 }
2224 }
2225
2226 int ipaddr_list_link(int argc, char **argv)
2227 {
2228 preferred_family = AF_PACKET;
2229 do_link = 1;
2230 return ipaddr_list_flush_or_save(argc, argv, IPADD_LIST);
2231 }
2232
2233 void ipaddr_reset_filter(int oneline, int ifindex)
2234 {
2235 memset(&filter, 0, sizeof(filter));
2236 filter.oneline = oneline;
2237 filter.ifindex = ifindex;
2238 filter.group = -1;
2239 }
2240
2241 static int default_scope(inet_prefix *lcl)
2242 {
2243 if (lcl->family == AF_INET) {
2244 if (lcl->bytelen >= 1 && *(__u8 *)&lcl->data == 127)
2245 return RT_SCOPE_HOST;
2246 }
2247 return 0;
2248 }
2249
2250 static bool ipaddr_is_multicast(inet_prefix *a)
2251 {
2252 if (a->family == AF_INET)
2253 return IN_MULTICAST(ntohl(a->data[0]));
2254 else if (a->family == AF_INET6)
2255 return IN6_IS_ADDR_MULTICAST(a->data);
2256 else
2257 return false;
2258 }
2259
2260 static bool is_valid_label(const char *dev, const char *label)
2261 {
2262 size_t len = strlen(dev);
2263
2264 if (strncmp(label, dev, len) != 0)
2265 return false;
2266
2267 return label[len] == '\0' || label[len] == ':';
2268 }
2269
2270 static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
2271 {
2272 struct {
2273 struct nlmsghdr n;
2274 struct ifaddrmsg ifa;
2275 char buf[256];
2276 } req = {
2277 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
2278 .n.nlmsg_flags = NLM_F_REQUEST | flags,
2279 .n.nlmsg_type = cmd,
2280 .ifa.ifa_family = preferred_family,
2281 };
2282 char *d = NULL;
2283 char *l = NULL;
2284 char *lcl_arg = NULL;
2285 char *valid_lftp = NULL;
2286 char *preferred_lftp = NULL;
2287 inet_prefix lcl = {};
2288 inet_prefix peer;
2289 int local_len = 0;
2290 int peer_len = 0;
2291 int brd_len = 0;
2292 int any_len = 0;
2293 int scoped = 0;
2294 __u32 preferred_lft = INFINITY_LIFE_TIME;
2295 __u32 valid_lft = INFINITY_LIFE_TIME;
2296 unsigned int ifa_flags = 0;
2297
2298 while (argc > 0) {
2299 if (strcmp(*argv, "peer") == 0 ||
2300 strcmp(*argv, "remote") == 0) {
2301 NEXT_ARG();
2302
2303 if (peer_len)
2304 duparg("peer", *argv);
2305 get_prefix(&peer, *argv, req.ifa.ifa_family);
2306 peer_len = peer.bytelen;
2307 if (req.ifa.ifa_family == AF_UNSPEC)
2308 req.ifa.ifa_family = peer.family;
2309 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
2310 req.ifa.ifa_prefixlen = peer.bitlen;
2311 } else if (matches(*argv, "broadcast") == 0 ||
2312 strcmp(*argv, "brd") == 0) {
2313 inet_prefix addr;
2314
2315 NEXT_ARG();
2316 if (brd_len)
2317 duparg("broadcast", *argv);
2318 if (strcmp(*argv, "+") == 0)
2319 brd_len = -1;
2320 else if (strcmp(*argv, "-") == 0)
2321 brd_len = -2;
2322 else {
2323 get_addr(&addr, *argv, req.ifa.ifa_family);
2324 if (req.ifa.ifa_family == AF_UNSPEC)
2325 req.ifa.ifa_family = addr.family;
2326 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
2327 brd_len = addr.bytelen;
2328 }
2329 } else if (strcmp(*argv, "anycast") == 0) {
2330 inet_prefix addr;
2331
2332 NEXT_ARG();
2333 if (any_len)
2334 duparg("anycast", *argv);
2335 get_addr(&addr, *argv, req.ifa.ifa_family);
2336 if (req.ifa.ifa_family == AF_UNSPEC)
2337 req.ifa.ifa_family = addr.family;
2338 addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
2339 any_len = addr.bytelen;
2340 } else if (strcmp(*argv, "scope") == 0) {
2341 unsigned int scope = 0;
2342
2343 NEXT_ARG();
2344 if (rtnl_rtscope_a2n(&scope, *argv))
2345 invarg("invalid scope value.", *argv);
2346 req.ifa.ifa_scope = scope;
2347 scoped = 1;
2348 } else if (strcmp(*argv, "dev") == 0) {
2349 NEXT_ARG();
2350 d = *argv;
2351 } else if (strcmp(*argv, "label") == 0) {
2352 NEXT_ARG();
2353 l = *argv;
2354 addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
2355 } else if (matches(*argv, "metric") == 0 ||
2356 matches(*argv, "priority") == 0 ||
2357 matches(*argv, "preference") == 0) {
2358 __u32 metric;
2359
2360 NEXT_ARG();
2361 if (get_u32(&metric, *argv, 0))
2362 invarg("\"metric\" value is invalid\n", *argv);
2363 addattr32(&req.n, sizeof(req), IFA_RT_PRIORITY, metric);
2364 } else if (matches(*argv, "valid_lft") == 0) {
2365 if (valid_lftp)
2366 duparg("valid_lft", *argv);
2367 NEXT_ARG();
2368 valid_lftp = *argv;
2369 if (set_lifetime(&valid_lft, *argv))
2370 invarg("valid_lft value", *argv);
2371 } else if (matches(*argv, "preferred_lft") == 0) {
2372 if (preferred_lftp)
2373 duparg("preferred_lft", *argv);
2374 NEXT_ARG();
2375 preferred_lftp = *argv;
2376 if (set_lifetime(&preferred_lft, *argv))
2377 invarg("preferred_lft value", *argv);
2378 } else if (lookup_flag_data_by_name(*argv)) {
2379 const struct ifa_flag_data_t* flag_data = lookup_flag_data_by_name(*argv);
2380 if (flag_data->readonly) {
2381 fprintf(stderr, "Warning: %s option is not mutable from userspace\n", flag_data->name);
2382 } else if (flag_data->v6only && req.ifa.ifa_family != AF_INET6) {
2383 fprintf(stderr, "Warning: %s option can be set only for IPv6 addresses\n", flag_data->name);
2384 } else {
2385 ifa_flags |= flag_data->mask;
2386 }
2387 } else {
2388 if (strcmp(*argv, "local") == 0)
2389 NEXT_ARG();
2390 if (matches(*argv, "help") == 0)
2391 usage();
2392 if (local_len)
2393 duparg2("local", *argv);
2394 lcl_arg = *argv;
2395 get_prefix(&lcl, *argv, req.ifa.ifa_family);
2396 if (req.ifa.ifa_family == AF_UNSPEC)
2397 req.ifa.ifa_family = lcl.family;
2398 addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
2399 local_len = lcl.bytelen;
2400 }
2401 argc--; argv++;
2402 }
2403 if (ifa_flags <= 0xff)
2404 req.ifa.ifa_flags = ifa_flags;
2405 else
2406 addattr32(&req.n, sizeof(req), IFA_FLAGS, ifa_flags);
2407
2408 if (d == NULL) {
2409 fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
2410 return -1;
2411 }
2412 if (l && !is_valid_label(d, l)) {
2413 fprintf(stderr,
2414 "\"label\" (%s) must match \"dev\" (%s) or be prefixed by \"dev\" with a colon.\n",
2415 l, d);
2416 return -1;
2417 }
2418
2419 if (peer_len == 0 && local_len) {
2420 if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
2421 fprintf(stderr,
2422 "Warning: Executing wildcard deletion to stay compatible with old scripts.\n"
2423 " Explicitly specify the prefix length (%s/%d) to avoid this warning.\n"
2424 " This special behaviour is likely to disappear in further releases,\n"
2425 " fix your scripts!\n", lcl_arg, local_len*8);
2426 } else {
2427 peer = lcl;
2428 addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
2429 }
2430 }
2431 if (req.ifa.ifa_prefixlen == 0)
2432 req.ifa.ifa_prefixlen = lcl.bitlen;
2433
2434 if (brd_len < 0 && cmd != RTM_DELADDR) {
2435 inet_prefix brd;
2436 int i;
2437
2438 if (req.ifa.ifa_family != AF_INET) {
2439 fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
2440 return -1;
2441 }
2442 brd = peer;
2443 if (brd.bitlen <= 30) {
2444 for (i = 31; i >= brd.bitlen; i--) {
2445 if (brd_len == -1)
2446 brd.data[0] |= htonl(1<<(31-i));
2447 else
2448 brd.data[0] &= ~htonl(1<<(31-i));
2449 }
2450 addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
2451 brd_len = brd.bytelen;
2452 }
2453 }
2454 if (!scoped && cmd != RTM_DELADDR)
2455 req.ifa.ifa_scope = default_scope(&lcl);
2456
2457 req.ifa.ifa_index = ll_name_to_index(d);
2458 if (!req.ifa.ifa_index)
2459 return nodev(d);
2460
2461 if (valid_lftp || preferred_lftp) {
2462 struct ifa_cacheinfo cinfo = {};
2463
2464 if (!valid_lft) {
2465 fprintf(stderr, "valid_lft is zero\n");
2466 return -1;
2467 }
2468 if (valid_lft < preferred_lft) {
2469 fprintf(stderr, "preferred_lft is greater than valid_lft\n");
2470 return -1;
2471 }
2472
2473 cinfo.ifa_prefered = preferred_lft;
2474 cinfo.ifa_valid = valid_lft;
2475 addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
2476 sizeof(cinfo));
2477 }
2478
2479 if ((ifa_flags & IFA_F_MCAUTOJOIN) && !ipaddr_is_multicast(&lcl)) {
2480 fprintf(stderr, "autojoin needs multicast address\n");
2481 return -1;
2482 }
2483
2484 if (rtnl_talk(&rth, &req.n, NULL) < 0)
2485 return -2;
2486
2487 return 0;
2488 }
2489
2490 int do_ipaddr(int argc, char **argv)
2491 {
2492 if (argc < 1)
2493 return ipaddr_list_flush_or_save(0, NULL, IPADD_LIST);
2494 if (matches(*argv, "add") == 0)
2495 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
2496 if (matches(*argv, "change") == 0 ||
2497 strcmp(*argv, "chg") == 0)
2498 return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
2499 if (matches(*argv, "replace") == 0)
2500 return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
2501 if (matches(*argv, "delete") == 0)
2502 return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
2503 if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
2504 || matches(*argv, "lst") == 0)
2505 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_LIST);
2506 if (matches(*argv, "flush") == 0)
2507 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_FLUSH);
2508 if (matches(*argv, "save") == 0)
2509 return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_SAVE);
2510 if (matches(*argv, "showdump") == 0)
2511 return ipaddr_showdump();
2512 if (matches(*argv, "restore") == 0)
2513 return ipaddr_restore();
2514 if (matches(*argv, "help") == 0)
2515 usage();
2516 fprintf(stderr, "Command \"%s\" is unknown, try \"ip address help\".\n", *argv);
2517 exit(-1);
2518 }
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