2 * iproute.c "ip route".
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.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
20 #include <sys/socket.h>
21 #include <netinet/in.h>
22 #include <netinet/ip.h>
23 #include <arpa/inet.h>
24 #include <linux/in_route.h>
25 #include <linux/icmpv6.h>
30 #include "ip_common.h"
33 #define RTAX_RTTVAR RTAX_HOPS
41 static const char *mx_names
[RTAX_MAX
+1] = {
43 [RTAX_WINDOW
] = "window",
45 [RTAX_RTTVAR
] = "rttvar",
46 [RTAX_SSTHRESH
] = "ssthresh",
48 [RTAX_ADVMSS
] = "advmss",
49 [RTAX_REORDERING
] = "reordering",
50 [RTAX_HOPLIMIT
] = "hoplimit",
51 [RTAX_INITCWND
] = "initcwnd",
52 [RTAX_FEATURES
] = "features",
53 [RTAX_RTO_MIN
] = "rto_min",
54 [RTAX_INITRWND
] = "initrwnd",
55 [RTAX_QUICKACK
] = "quickack",
56 [RTAX_CC_ALGO
] = "congctl",
57 [RTAX_FASTOPEN_NO_COOKIE
] = "fastopen_no_cookie"
59 static void usage(void) __attribute__((noreturn
));
61 static void usage(void)
64 "Usage: ip route { list | flush } SELECTOR\n"
65 " ip route save SELECTOR\n"
67 " ip route showdump\n"
68 " ip route get [ ROUTE_GET_FLAGS ] ADDRESS\n"
69 " [ from ADDRESS iif STRING ]\n"
70 " [ oif STRING ] [ tos TOS ]\n"
71 " [ mark NUMBER ] [ vrf NAME ]\n"
72 " [ uid NUMBER ] [ ipproto PROTOCOL ]\n"
73 " [ sport NUMBER ] [ dport NUMBER ]\n"
74 " ip route { add | del | change | append | replace } ROUTE\n"
75 "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n"
76 " [ table TABLE_ID ] [ vrf NAME ] [ proto RTPROTO ]\n"
77 " [ type TYPE ] [ scope SCOPE ]\n"
78 "ROUTE := NODE_SPEC [ INFO_SPEC ]\n"
79 "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n"
80 " [ table TABLE_ID ] [ proto RTPROTO ]\n"
81 " [ scope SCOPE ] [ metric METRIC ]\n"
82 " [ ttl-propagate { enabled | disabled } ]\n"
83 "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n"
84 "NH := [ encap ENCAPTYPE ENCAPHDR ] [ via [ FAMILY ] ADDRESS ]\n"
85 " [ dev STRING ] [ weight NUMBER ] NHFLAGS\n"
86 "FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]\n"
87 "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]\n"
88 " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n"
89 " [ window NUMBER ] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n"
90 " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n"
91 " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n"
92 " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n"
93 " [ pref PREF ] [ expires TIME ] [ fastopen_no_cookie BOOL ]\n"
94 "TYPE := { unicast | local | broadcast | multicast | throw |\n"
95 " unreachable | prohibit | blackhole | nat }\n"
96 "TABLE_ID := [ local | main | default | all | NUMBER ]\n"
97 "SCOPE := [ host | link | global | NUMBER ]\n"
98 "NHFLAGS := [ onlink | pervasive ]\n"
99 "RTPROTO := [ kernel | boot | static | NUMBER ]\n"
100 "PREF := [ low | medium | high ]\n"
101 "TIME := NUMBER[s|ms]\n"
104 "ENCAPTYPE := [ mpls | ip | ip6 | seg6 | seg6local ]\n"
105 "ENCAPHDR := [ MPLSLABEL | SEG6HDR ]\n"
106 "SEG6HDR := [ mode SEGMODE ] segs ADDR1,ADDRi,ADDRn [hmac HMACKEYID] [cleanup]\n"
107 "SEGMODE := [ encap | inline ]\n"
108 "ROUTE_GET_FLAGS := [ fibmatch ]\n");
121 int protocol
, protocolmask
;
122 int scope
, scopemask
;
128 int realm
, realmmask
;
129 __u32 metric
, metricmask
;
130 inet_prefix rprefsrc
;
138 static int flush_update(void)
140 if (rtnl_send_check(&rth
, filter
.flushb
, filter
.flushp
) < 0) {
141 perror("Failed to send flush request");
148 static int filter_nlmsg(struct nlmsghdr
*n
, struct rtattr
**tb
, int host_len
)
150 struct rtmsg
*r
= NLMSG_DATA(n
);
151 inet_prefix dst
= { .family
= r
->rtm_family
};
152 inet_prefix src
= { .family
= r
->rtm_family
};
153 inet_prefix via
= { .family
= r
->rtm_family
};
154 inet_prefix prefsrc
= { .family
= r
->rtm_family
};
156 static int ip6_multiple_tables
;
158 table
= rtm_get_table(r
, tb
);
160 if (preferred_family
!= AF_UNSPEC
&& r
->rtm_family
!= preferred_family
)
163 if (r
->rtm_family
== AF_INET6
&& table
!= RT_TABLE_MAIN
)
164 ip6_multiple_tables
= 1;
166 if (filter
.cloned
== !(r
->rtm_flags
& RTM_F_CLONED
))
169 if (r
->rtm_family
== AF_INET6
&& !ip6_multiple_tables
) {
171 if (filter
.tb
== RT_TABLE_LOCAL
) {
172 if (r
->rtm_type
!= RTN_LOCAL
)
174 } else if (filter
.tb
== RT_TABLE_MAIN
) {
175 if (r
->rtm_type
== RTN_LOCAL
)
182 if (filter
.tb
> 0 && filter
.tb
!= table
)
185 if ((filter
.protocol
^r
->rtm_protocol
)&filter
.protocolmask
)
187 if ((filter
.scope
^r
->rtm_scope
)&filter
.scopemask
)
190 if (filter
.typemask
&& !(filter
.typemask
& (1 << r
->rtm_type
)))
192 if ((filter
.tos
^r
->rtm_tos
)&filter
.tosmask
)
194 if (filter
.rdst
.family
) {
195 if (r
->rtm_family
!= filter
.rdst
.family
||
196 filter
.rdst
.bitlen
> r
->rtm_dst_len
)
198 } else if (filter
.rdst
.flags
& PREFIXLEN_SPECIFIED
) {
199 if (filter
.rdst
.bitlen
> r
->rtm_dst_len
)
202 if (filter
.mdst
.family
) {
203 if (r
->rtm_family
!= filter
.mdst
.family
||
204 (filter
.mdst
.bitlen
>= 0 &&
205 filter
.mdst
.bitlen
< r
->rtm_dst_len
))
207 } else if (filter
.mdst
.flags
& PREFIXLEN_SPECIFIED
) {
208 if (filter
.mdst
.bitlen
>= 0 &&
209 filter
.mdst
.bitlen
< r
->rtm_dst_len
)
212 if (filter
.rsrc
.family
) {
213 if (r
->rtm_family
!= filter
.rsrc
.family
||
214 filter
.rsrc
.bitlen
> r
->rtm_src_len
)
216 } else if (filter
.rsrc
.flags
& PREFIXLEN_SPECIFIED
) {
217 if (filter
.rsrc
.bitlen
> r
->rtm_src_len
)
220 if (filter
.msrc
.family
) {
221 if (r
->rtm_family
!= filter
.msrc
.family
||
222 (filter
.msrc
.bitlen
>= 0 &&
223 filter
.msrc
.bitlen
< r
->rtm_src_len
))
225 } else if (filter
.msrc
.flags
& PREFIXLEN_SPECIFIED
) {
226 if (filter
.msrc
.bitlen
>= 0 &&
227 filter
.msrc
.bitlen
< r
->rtm_src_len
)
230 if (filter
.rvia
.family
) {
231 int family
= r
->rtm_family
;
234 struct rtvia
*via
= RTA_DATA(tb
[RTA_VIA
]);
236 family
= via
->rtvia_family
;
238 if (family
!= filter
.rvia
.family
)
241 if (filter
.rprefsrc
.family
&& r
->rtm_family
!= filter
.rprefsrc
.family
)
245 memcpy(&dst
.data
, RTA_DATA(tb
[RTA_DST
]), (r
->rtm_dst_len
+7)/8);
246 if (filter
.rsrc
.family
|| filter
.msrc
.family
||
247 filter
.rsrc
.flags
& PREFIXLEN_SPECIFIED
||
248 filter
.msrc
.flags
& PREFIXLEN_SPECIFIED
) {
250 memcpy(&src
.data
, RTA_DATA(tb
[RTA_SRC
]), (r
->rtm_src_len
+7)/8);
252 if (filter
.rvia
.bitlen
> 0) {
254 memcpy(&via
.data
, RTA_DATA(tb
[RTA_GATEWAY
]), host_len
/8);
256 size_t len
= RTA_PAYLOAD(tb
[RTA_VIA
]) - 2;
257 struct rtvia
*rtvia
= RTA_DATA(tb
[RTA_VIA
]);
259 via
.family
= rtvia
->rtvia_family
;
260 memcpy(&via
.data
, rtvia
->rtvia_addr
, len
);
263 if (filter
.rprefsrc
.bitlen
> 0) {
265 memcpy(&prefsrc
.data
, RTA_DATA(tb
[RTA_PREFSRC
]), host_len
/8);
268 if ((filter
.rdst
.family
|| filter
.rdst
.flags
& PREFIXLEN_SPECIFIED
) &&
269 inet_addr_match(&dst
, &filter
.rdst
, filter
.rdst
.bitlen
))
271 if ((filter
.mdst
.family
|| filter
.mdst
.flags
& PREFIXLEN_SPECIFIED
) &&
272 inet_addr_match(&dst
, &filter
.mdst
, r
->rtm_dst_len
))
275 if ((filter
.rsrc
.family
|| filter
.rsrc
.flags
& PREFIXLEN_SPECIFIED
) &&
276 inet_addr_match(&src
, &filter
.rsrc
, filter
.rsrc
.bitlen
))
278 if ((filter
.msrc
.family
|| filter
.msrc
.flags
& PREFIXLEN_SPECIFIED
) &&
279 filter
.msrc
.bitlen
>= 0 &&
280 inet_addr_match(&src
, &filter
.msrc
, r
->rtm_src_len
))
283 if (filter
.rvia
.family
&& inet_addr_match(&via
, &filter
.rvia
, filter
.rvia
.bitlen
))
285 if (filter
.rprefsrc
.family
&& inet_addr_match(&prefsrc
, &filter
.rprefsrc
, filter
.rprefsrc
.bitlen
))
287 if (filter
.realmmask
) {
291 realms
= rta_getattr_u32(tb
[RTA_FLOW
]);
292 if ((realms
^filter
.realm
)&filter
.realmmask
)
295 if (filter
.iifmask
) {
299 iif
= rta_getattr_u32(tb
[RTA_IIF
]);
300 if ((iif
^filter
.iif
)&filter
.iifmask
)
303 if (filter
.oifmask
) {
307 oif
= rta_getattr_u32(tb
[RTA_OIF
]);
308 if ((oif
^filter
.oif
)&filter
.oifmask
)
311 if (filter
.markmask
) {
315 mark
= rta_getattr_u32(tb
[RTA_MARK
]);
316 if ((mark
^ filter
.mark
) & filter
.markmask
)
319 if (filter
.metricmask
) {
322 if (tb
[RTA_PRIORITY
])
323 metric
= rta_getattr_u32(tb
[RTA_PRIORITY
]);
324 if ((metric
^ filter
.metric
) & filter
.metricmask
)
328 r
->rtm_family
== AF_INET6
&&
329 r
->rtm_dst_len
== 0 &&
330 r
->rtm_type
== RTN_UNREACHABLE
&&
332 rta_getattr_u32(tb
[RTA_PRIORITY
]) == -1)
338 static void print_rtax_features(FILE *fp
, unsigned int features
)
340 unsigned int of
= features
;
342 if (features
& RTAX_FEATURE_ECN
) {
343 print_null(PRINT_ANY
, "ecn", "ecn ", NULL
);
344 features
&= ~RTAX_FEATURE_ECN
;
348 print_0xhex(PRINT_ANY
,
349 "features", "0x%x ", of
);
352 static void print_rt_flags(FILE *fp
, unsigned int flags
)
354 open_json_array(PRINT_JSON
,
355 is_json_context() ? "flags" : "");
357 if (flags
& RTNH_F_DEAD
)
358 print_string(PRINT_ANY
, NULL
, "%s ", "dead");
359 if (flags
& RTNH_F_ONLINK
)
360 print_string(PRINT_ANY
, NULL
, "%s ", "onlink");
361 if (flags
& RTNH_F_PERVASIVE
)
362 print_string(PRINT_ANY
, NULL
, "%s ", "pervasive");
363 if (flags
& RTNH_F_OFFLOAD
)
364 print_string(PRINT_ANY
, NULL
, "%s ", "offload");
365 if (flags
& RTM_F_NOTIFY
)
366 print_string(PRINT_ANY
, NULL
, "%s ", "notify");
367 if (flags
& RTNH_F_LINKDOWN
)
368 print_string(PRINT_ANY
, NULL
, "%s ", "linkdown");
369 if (flags
& RTNH_F_UNRESOLVED
)
370 print_string(PRINT_ANY
, NULL
, "%s ", "unresolved");
372 close_json_array(PRINT_JSON
, NULL
);
375 static void print_rt_pref(FILE *fp
, unsigned int pref
)
379 case ICMPV6_ROUTER_PREF_LOW
:
380 print_string(PRINT_ANY
,
381 "pref", "pref %s", "low");
383 case ICMPV6_ROUTER_PREF_MEDIUM
:
384 print_string(PRINT_ANY
,
385 "pref", "pref %s", "medium");
387 case ICMPV6_ROUTER_PREF_HIGH
:
388 print_string(PRINT_ANY
,
389 "pref", "pref %s", "high");
392 print_uint(PRINT_ANY
,
397 static void print_rta_if(FILE *fp
, const struct rtattr
*rta
,
400 const char *ifname
= ll_index_to_name(rta_getattr_u32(rta
));
402 if (is_json_context())
403 print_string(PRINT_JSON
, prefix
, NULL
, ifname
);
405 fprintf(fp
, "%s ", prefix
);
406 color_fprintf(fp
, COLOR_IFNAME
, "%s ", ifname
);
410 static void print_cache_flags(FILE *fp
, __u32 flags
)
412 json_writer_t
*jw
= get_json_writer();
416 jsonw_name(jw
, "cache");
417 jsonw_start_array(jw
);
419 fprintf(fp
, "%s cache ", _SL_
);
425 #define PRTFL(fl, flname) \
426 if (flags & RTCF_##fl) { \
427 flags &= ~RTCF_##fl; \
429 jsonw_string(jw, flname); \
431 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
434 PRTFL(LOCAL
, "local");
435 PRTFL(REJECT
, "reject");
436 PRTFL(MULTICAST
, "mc");
437 PRTFL(BROADCAST
, "brd");
438 PRTFL(DNAT
, "dst-nat");
439 PRTFL(SNAT
, "src-nat");
441 PRTFL(DIRECTDST
, "dst-direct");
442 PRTFL(DIRECTSRC
, "src-direct");
443 PRTFL(REDIRECTED
, "redirected");
444 PRTFL(DOREDIRECT
, "redirect");
445 PRTFL(FAST
, "fastroute");
446 PRTFL(NOTIFY
, "notify");
447 PRTFL(TPROXY
, "proxy");
451 print_hex(PRINT_ANY
, "flags", "%x>", flags
);
459 static void print_rta_cacheinfo(FILE *fp
, const struct rta_cacheinfo
*ci
)
466 if (ci
->rta_expires
!= 0)
467 print_int(PRINT_ANY
, "expires",
468 "expires %dsec ", ci
->rta_expires
/hz
);
469 if (ci
->rta_error
!= 0)
470 print_uint(PRINT_ANY
, "error",
471 "error %u ", ci
->rta_error
);
475 print_uint(PRINT_ANY
, "users",
476 "users %u ", ci
->rta_clntref
);
477 if (ci
->rta_used
!= 0)
478 print_uint(PRINT_ANY
, "used",
479 "used %u ", ci
->rta_used
);
480 if (ci
->rta_lastuse
!= 0)
481 print_uint(PRINT_ANY
, "age",
482 "age %usec ", ci
->rta_lastuse
/hz
);
485 print_0xhex(PRINT_ANY
, "ipid",
486 "ipid 0x%04x ", ci
->rta_id
);
487 if (ci
->rta_ts
|| ci
->rta_tsage
) {
488 print_0xhex(PRINT_ANY
, "ts",
489 "ts 0x%x", ci
->rta_ts
);
490 print_uint(PRINT_ANY
, "tsage",
491 "tsage %usec ", ci
->rta_tsage
);
495 static void print_rta_flow(FILE *fp
, const struct rtattr
*rta
)
497 __u32 to
= rta_getattr_u32(rta
);
498 __u32 from
= to
>> 16;
502 if (is_json_context()) {
503 open_json_object("flow");
506 print_string(PRINT_JSON
, "from", NULL
,
507 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
508 print_string(PRINT_JSON
, "to", NULL
,
509 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
512 fprintf(fp
, "realm%s ", from
? "s" : "");
515 print_string(PRINT_FP
, NULL
, "%s/",
516 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
517 print_string(PRINT_FP
, NULL
, "%s ",
518 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
522 static void print_rta_newdst(FILE *fp
, const struct rtmsg
*r
,
523 const struct rtattr
*rta
)
525 const char *newdst
= format_host_rta(r
->rtm_family
, rta
);
527 if (is_json_context())
528 print_string(PRINT_JSON
, "to", NULL
, newdst
);
530 fprintf(fp
, "as to ");
531 print_color_string(PRINT_FP
,
532 ifa_family_color(r
->rtm_family
),
533 NULL
, "%s ", newdst
);
537 static void print_rta_gateway(FILE *fp
, const struct rtmsg
*r
,
538 const struct rtattr
*rta
)
540 const char *gateway
= format_host_rta(r
->rtm_family
, rta
);
542 if (is_json_context())
543 print_string(PRINT_JSON
, "gateway", NULL
, gateway
);
546 print_color_string(PRINT_FP
,
547 ifa_family_color(r
->rtm_family
),
548 NULL
, "%s ", gateway
);
552 static void print_rta_via(FILE *fp
, const struct rtattr
*rta
)
554 size_t len
= RTA_PAYLOAD(rta
) - 2;
555 const struct rtvia
*via
= RTA_DATA(rta
);
557 if (is_json_context()) {
558 open_json_object("via");
559 print_string(PRINT_JSON
, "family", NULL
,
560 family_name(via
->rtvia_family
));
561 print_string(PRINT_JSON
, "host", NULL
,
562 format_host(via
->rtvia_family
, len
,
566 print_string(PRINT_FP
, NULL
, "via %s ",
567 family_name(via
->rtvia_family
));
568 print_color_string(PRINT_FP
,
569 ifa_family_color(via
->rtvia_family
),
571 format_host(via
->rtvia_family
,
572 len
, via
->rtvia_addr
));
576 static void print_rta_metrics(FILE *fp
, const struct rtattr
*rta
)
578 struct rtattr
*mxrta
[RTAX_MAX
+1];
579 unsigned int mxlock
= 0;
582 open_json_array(PRINT_JSON
, "metrics");
584 parse_rtattr(mxrta
, RTAX_MAX
, RTA_DATA(rta
), RTA_PAYLOAD(rta
));
586 if (mxrta
[RTAX_LOCK
])
587 mxlock
= rta_getattr_u32(mxrta
[RTAX_LOCK
]);
589 for (i
= 2; i
<= RTAX_MAX
; i
++) {
592 if (mxrta
[i
] == NULL
&& !(mxlock
& (1 << i
)))
595 if (mxrta
[i
] != NULL
&& i
!= RTAX_CC_ALGO
)
596 val
= rta_getattr_u32(mxrta
[i
]);
598 if (i
== RTAX_HOPLIMIT
&& (int)val
== -1)
601 if (!is_json_context()) {
602 if (i
< sizeof(mx_names
)/sizeof(char *) && mx_names
[i
])
603 fprintf(fp
, "%s ", mx_names
[i
]);
605 fprintf(fp
, "metric %d ", i
);
608 fprintf(fp
, "lock ");
613 print_rtax_features(fp
, val
);
616 fprintf(fp
, "%u ", val
);
624 else if (i
== RTAX_RTTVAR
)
627 if (is_json_context())
628 print_uint(PRINT_JSON
, mx_names
[i
],
632 fprintf(fp
, "%gs ", val
/1e3
);
634 fprintf(fp
, "%ums ", val
);
638 print_string(PRINT_ANY
, "congestion",
639 "%s ", rta_getattr_str(mxrta
[i
]));
644 close_json_array(PRINT_JSON
, NULL
);
647 static void print_rta_multipath(FILE *fp
, const struct rtmsg
*r
,
650 const struct rtnexthop
*nh
= RTA_DATA(rta
);
651 int len
= RTA_PAYLOAD(rta
);
654 while (len
>= sizeof(*nh
)) {
655 struct rtattr
*tb
[RTA_MAX
+ 1];
657 if (nh
->rtnh_len
> len
)
660 if (!is_json_context()) {
661 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
662 r
->rtm_type
== RTN_MULTICAST
) {
664 fprintf(fp
, "Oifs: ");
670 fprintf(fp
, "%s\tnexthop ", _SL_
);
673 if (nh
->rtnh_len
> sizeof(*nh
)) {
674 parse_rtattr(tb
, RTA_MAX
, RTNH_DATA(nh
),
675 nh
->rtnh_len
- sizeof(*nh
));
682 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
684 print_rta_gateway(fp
, r
, tb
[RTA_GATEWAY
]);
686 print_rta_via(fp
, tb
[RTA_VIA
]);
688 print_rta_flow(fp
, tb
[RTA_FLOW
]);
691 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
692 r
->rtm_type
== RTN_MULTICAST
) {
693 fprintf(fp
, "%s", ll_index_to_name(nh
->rtnh_ifindex
));
694 if (nh
->rtnh_hops
!= 1)
695 fprintf(fp
, "(ttl>%d)", nh
->rtnh_hops
);
698 fprintf(fp
, "dev %s ", ll_index_to_name(nh
->rtnh_ifindex
));
699 if (r
->rtm_family
!= AF_MPLS
)
700 fprintf(fp
, "weight %d ",
704 print_rt_flags(fp
, nh
->rtnh_flags
);
706 len
-= NLMSG_ALIGN(nh
->rtnh_len
);
711 int print_route(struct nlmsghdr
*n
, void *arg
)
713 FILE *fp
= (FILE *)arg
;
714 struct rtmsg
*r
= NLMSG_DATA(n
);
715 int len
= n
->nlmsg_len
;
716 struct rtattr
*tb
[RTA_MAX
+1];
717 int family
, color
, host_len
;
723 if (n
->nlmsg_type
!= RTM_NEWROUTE
&& n
->nlmsg_type
!= RTM_DELROUTE
) {
724 fprintf(stderr
, "Not a route: %08x %08x %08x\n",
725 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
728 if (filter
.flushb
&& n
->nlmsg_type
!= RTM_NEWROUTE
)
730 len
-= NLMSG_LENGTH(sizeof(*r
));
732 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
736 host_len
= af_bit_len(r
->rtm_family
);
738 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
739 table
= rtm_get_table(r
, tb
);
741 if (!filter_nlmsg(n
, tb
, host_len
))
747 if (NLMSG_ALIGN(filter
.flushp
) + n
->nlmsg_len
> filter
.flushe
) {
748 ret
= flush_update();
752 fn
= (struct nlmsghdr
*)(filter
.flushb
+ NLMSG_ALIGN(filter
.flushp
));
753 memcpy(fn
, n
, n
->nlmsg_len
);
754 fn
->nlmsg_type
= RTM_DELROUTE
;
755 fn
->nlmsg_flags
= NLM_F_REQUEST
;
756 fn
->nlmsg_seq
= ++rth
.seq
;
757 filter
.flushp
= (((char *)fn
) + n
->nlmsg_len
) - filter
.flushb
;
763 open_json_object(NULL
);
764 if (n
->nlmsg_type
== RTM_DELROUTE
)
765 print_bool(PRINT_ANY
, "deleted", "Deleted ", true);
767 if ((r
->rtm_type
!= RTN_UNICAST
|| show_details
> 0) &&
768 (!filter
.typemask
|| (filter
.typemask
& (1 << r
->rtm_type
))))
769 print_string(PRINT_ANY
, NULL
, "%s ",
770 rtnl_rtntype_n2a(r
->rtm_type
, b1
, sizeof(b1
)));
774 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
775 color
= ifa_family_color(family
);
777 if (r
->rtm_dst_len
!= host_len
) {
778 snprintf(b1
, sizeof(b1
),
779 "%s/%u", rt_addr_n2a_rta(family
, tb
[RTA_DST
]),
782 format_host_rta_r(family
, tb
[RTA_DST
],
786 } else if (r
->rtm_dst_len
) {
787 snprintf(b1
, sizeof(b1
), "0/%d ", r
->rtm_dst_len
);
789 strncpy(b1
, "default", sizeof(b1
));
791 print_color_string(PRINT_ANY
, color
,
795 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
796 color
= ifa_family_color(family
);
798 if (r
->rtm_src_len
!= host_len
) {
799 snprintf(b1
, sizeof(b1
),
801 rt_addr_n2a_rta(family
, tb
[RTA_SRC
]),
804 format_host_rta_r(family
, tb
[RTA_SRC
],
807 print_color_string(PRINT_ANY
, color
,
808 "from", "from %s ", b1
);
809 } else if (r
->rtm_src_len
) {
810 snprintf(b1
, sizeof(b1
), "0/%u", r
->rtm_src_len
);
812 print_string(PRINT_ANY
, "src", "from %s ", b1
);
816 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
819 lwt_print_encap(fp
, tb
[RTA_ENCAP_TYPE
], tb
[RTA_ENCAP
]);
821 if (r
->rtm_tos
&& filter
.tosmask
!= -1) {
822 print_string(PRINT_ANY
, "tos", "tos %s ",
823 rtnl_dsfield_n2a(r
->rtm_tos
, b1
, sizeof(b1
)));
826 if (tb
[RTA_GATEWAY
] && filter
.rvia
.bitlen
!= host_len
)
827 print_rta_gateway(fp
, r
, tb
[RTA_GATEWAY
]);
830 print_rta_via(fp
, tb
[RTA_VIA
]);
832 if (tb
[RTA_OIF
] && filter
.oifmask
!= -1)
833 print_rta_if(fp
, tb
[RTA_OIF
], "dev");
835 if (table
&& (table
!= RT_TABLE_MAIN
|| show_details
> 0) && !filter
.tb
)
836 print_string(PRINT_ANY
,
837 "table", "table %s ",
838 rtnl_rttable_n2a(table
, b1
, sizeof(b1
)));
840 if (!(r
->rtm_flags
& RTM_F_CLONED
)) {
841 if ((r
->rtm_protocol
!= RTPROT_BOOT
|| show_details
> 0) &&
842 filter
.protocolmask
!= -1)
843 print_string(PRINT_ANY
,
844 "protocol", "proto %s ",
845 rtnl_rtprot_n2a(r
->rtm_protocol
,
848 if ((r
->rtm_scope
!= RT_SCOPE_UNIVERSE
|| show_details
> 0) &&
849 filter
.scopemask
!= -1)
850 print_string(PRINT_ANY
,
851 "scope", "scope %s ",
852 rtnl_rtscope_n2a(r
->rtm_scope
,
856 if (tb
[RTA_PREFSRC
] && filter
.rprefsrc
.bitlen
!= host_len
) {
858 = rt_addr_n2a_rta(r
->rtm_family
, tb
[RTA_PREFSRC
]);
860 /* Do not use format_host(). It is our local addr
861 and symbolic name will not be useful.
863 if (is_json_context())
864 print_string(PRINT_JSON
, "prefsrc", NULL
, psrc
);
867 print_color_string(PRINT_FP
,
868 ifa_family_color(r
->rtm_family
),
874 if (tb
[RTA_PRIORITY
] && filter
.metricmask
!= -1)
875 print_uint(PRINT_ANY
, "metric", "metric %u ",
876 rta_getattr_u32(tb
[RTA_PRIORITY
]));
878 print_rt_flags(fp
, r
->rtm_flags
);
881 unsigned int mark
= rta_getattr_u32(tb
[RTA_MARK
]);
884 if (is_json_context())
885 print_uint(PRINT_JSON
, "mark", NULL
, mark
);
887 print_0xhex(PRINT_FP
, NULL
,
890 print_uint(PRINT_FP
, NULL
,
895 if (tb
[RTA_FLOW
] && filter
.realmmask
!= ~0U)
896 print_rta_flow(fp
, tb
[RTA_FLOW
]);
899 print_uint(PRINT_ANY
, "uid", "uid %u ",
900 rta_getattr_u32(tb
[RTA_UID
]));
902 if (r
->rtm_family
== AF_INET
) {
903 if (r
->rtm_flags
& RTM_F_CLONED
)
904 print_cache_flags(fp
, r
->rtm_flags
);
906 if (tb
[RTA_CACHEINFO
])
907 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
908 } else if (r
->rtm_family
== AF_INET6
) {
909 if (tb
[RTA_CACHEINFO
])
910 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
914 print_rta_metrics(fp
, tb
[RTA_METRICS
]);
916 if (tb
[RTA_IIF
] && filter
.iifmask
!= -1)
917 print_rta_if(fp
, tb
[RTA_IIF
], "iif");
919 if (tb
[RTA_MULTIPATH
])
920 print_rta_multipath(fp
, r
, tb
[RTA_MULTIPATH
]);
923 print_rt_pref(fp
, rta_getattr_u8(tb
[RTA_PREF
]));
925 if (tb
[RTA_TTL_PROPAGATE
]) {
926 bool propagate
= rta_getattr_u8(tb
[RTA_TTL_PROPAGATE
]);
928 if (is_json_context())
929 print_bool(PRINT_JSON
, "ttl-propogate", NULL
,
932 print_string(PRINT_FP
, NULL
,
934 propagate
? "enabled" : "disabled");
937 print_string(PRINT_FP
, NULL
, "\n", NULL
);
943 static int parse_one_nh(struct nlmsghdr
*n
, struct rtmsg
*r
,
944 struct rtattr
*rta
, size_t len
, struct rtnexthop
*rtnh
,
945 int *argcp
, char ***argvp
)
948 char **argv
= *argvp
;
950 while (++argv
, --argc
> 0) {
951 if (strcmp(*argv
, "via") == 0) {
956 family
= read_family(*argv
);
957 if (family
== AF_UNSPEC
)
958 family
= r
->rtm_family
;
961 get_addr(&addr
, *argv
, family
);
962 if (r
->rtm_family
== AF_UNSPEC
)
963 r
->rtm_family
= addr
.family
;
964 if (addr
.family
== r
->rtm_family
) {
965 if (rta_addattr_l(rta
, len
, RTA_GATEWAY
,
966 &addr
.data
, addr
.bytelen
))
968 rtnh
->rtnh_len
+= sizeof(struct rtattr
)
971 if (rta_addattr_l(rta
, len
, RTA_VIA
,
972 &addr
.family
, addr
.bytelen
+ 2))
974 rtnh
->rtnh_len
+= RTA_SPACE(addr
.bytelen
+ 2);
976 } else if (strcmp(*argv
, "dev") == 0) {
978 rtnh
->rtnh_ifindex
= ll_name_to_index(*argv
);
979 if (!rtnh
->rtnh_ifindex
)
981 } else if (strcmp(*argv
, "weight") == 0) {
985 if (get_unsigned(&w
, *argv
, 0) || w
== 0 || w
> 256)
986 invarg("\"weight\" is invalid\n", *argv
);
987 rtnh
->rtnh_hops
= w
- 1;
988 } else if (strcmp(*argv
, "onlink") == 0) {
989 rtnh
->rtnh_flags
|= RTNH_F_ONLINK
;
990 } else if (matches(*argv
, "realms") == 0) {
994 if (get_rt_realms_or_raw(&realm
, *argv
))
995 invarg("\"realm\" value is invalid\n", *argv
);
996 if (rta_addattr32(rta
, len
, RTA_FLOW
, realm
))
998 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + 4;
999 } else if (strcmp(*argv
, "encap") == 0) {
1000 int old_len
= rta
->rta_len
;
1002 if (lwt_parse_encap(rta
, len
, &argc
, &argv
))
1004 rtnh
->rtnh_len
+= rta
->rta_len
- old_len
;
1005 } else if (strcmp(*argv
, "as") == 0) {
1009 if (strcmp(*argv
, "to") == 0)
1011 get_addr(&addr
, *argv
, r
->rtm_family
);
1012 if (rta_addattr_l(rta
, len
, RTA_NEWDST
,
1013 &addr
.data
, addr
.bytelen
))
1015 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + addr
.bytelen
;
1024 static int parse_nexthops(struct nlmsghdr
*n
, struct rtmsg
*r
,
1025 int argc
, char **argv
)
1028 struct rtattr
*rta
= (void *)buf
;
1029 struct rtnexthop
*rtnh
;
1031 rta
->rta_type
= RTA_MULTIPATH
;
1032 rta
->rta_len
= RTA_LENGTH(0);
1033 rtnh
= RTA_DATA(rta
);
1036 if (strcmp(*argv
, "nexthop") != 0) {
1037 fprintf(stderr
, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv
);
1041 fprintf(stderr
, "Error: unexpected end of line after \"nexthop\"\n");
1044 memset(rtnh
, 0, sizeof(*rtnh
));
1045 rtnh
->rtnh_len
= sizeof(*rtnh
);
1046 rta
->rta_len
+= rtnh
->rtnh_len
;
1047 if (parse_one_nh(n
, r
, rta
, 4096, rtnh
, &argc
, &argv
)) {
1048 fprintf(stderr
, "Error: cannot parse nexthop\n");
1051 rtnh
= RTNH_NEXT(rtnh
);
1054 if (rta
->rta_len
> RTA_LENGTH(0))
1055 return addattr_l(n
, 4096, RTA_MULTIPATH
,
1056 RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1060 static int iproute_modify(int cmd
, unsigned int flags
, int argc
, char **argv
)
1067 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1068 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
1069 .n
.nlmsg_type
= cmd
,
1070 .r
.rtm_family
= preferred_family
,
1071 .r
.rtm_table
= RT_TABLE_MAIN
,
1072 .r
.rtm_scope
= RT_SCOPE_NOWHERE
,
1075 struct rtattr
*mxrta
= (void *)mxbuf
;
1076 unsigned int mxlock
= 0;
1086 if (cmd
!= RTM_DELROUTE
) {
1087 req
.r
.rtm_protocol
= RTPROT_BOOT
;
1088 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1089 req
.r
.rtm_type
= RTN_UNICAST
;
1092 mxrta
->rta_type
= RTA_METRICS
;
1093 mxrta
->rta_len
= RTA_LENGTH(0);
1096 if (strcmp(*argv
, "src") == 0) {
1100 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1101 if (req
.r
.rtm_family
== AF_UNSPEC
)
1102 req
.r
.rtm_family
= addr
.family
;
1103 addattr_l(&req
.n
, sizeof(req
),
1104 RTA_PREFSRC
, &addr
.data
, addr
.bytelen
);
1105 } else if (strcmp(*argv
, "as") == 0) {
1109 if (strcmp(*argv
, "to") == 0) {
1112 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1113 if (req
.r
.rtm_family
== AF_UNSPEC
)
1114 req
.r
.rtm_family
= addr
.family
;
1115 addattr_l(&req
.n
, sizeof(req
),
1116 RTA_NEWDST
, &addr
.data
, addr
.bytelen
);
1117 } else if (strcmp(*argv
, "via") == 0) {
1122 invarg("use nexthop syntax to specify multiple via\n",
1127 family
= read_family(*argv
);
1128 if (family
== AF_UNSPEC
)
1129 family
= req
.r
.rtm_family
;
1132 get_addr(&addr
, *argv
, family
);
1133 if (req
.r
.rtm_family
== AF_UNSPEC
)
1134 req
.r
.rtm_family
= addr
.family
;
1135 if (addr
.family
== req
.r
.rtm_family
)
1136 addattr_l(&req
.n
, sizeof(req
), RTA_GATEWAY
,
1137 &addr
.data
, addr
.bytelen
);
1139 addattr_l(&req
.n
, sizeof(req
), RTA_VIA
,
1140 &addr
.family
, addr
.bytelen
+2);
1141 } else if (strcmp(*argv
, "from") == 0) {
1145 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1146 if (req
.r
.rtm_family
== AF_UNSPEC
)
1147 req
.r
.rtm_family
= addr
.family
;
1149 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
, &addr
.data
, addr
.bytelen
);
1150 req
.r
.rtm_src_len
= addr
.bitlen
;
1151 } else if (strcmp(*argv
, "tos") == 0 ||
1152 matches(*argv
, "dsfield") == 0) {
1156 if (rtnl_dsfield_a2n(&tos
, *argv
))
1157 invarg("\"tos\" value is invalid\n", *argv
);
1158 req
.r
.rtm_tos
= tos
;
1159 } else if (strcmp(*argv
, "expires") == 0) {
1163 if (get_u32(&expires
, *argv
, 0))
1164 invarg("\"expires\" value is invalid\n", *argv
);
1165 addattr32(&req
.n
, sizeof(req
), RTA_EXPIRES
, expires
);
1166 } else if (matches(*argv
, "metric") == 0 ||
1167 matches(*argv
, "priority") == 0 ||
1168 strcmp(*argv
, "preference") == 0) {
1172 if (get_u32(&metric
, *argv
, 0))
1173 invarg("\"metric\" value is invalid\n", *argv
);
1174 addattr32(&req
.n
, sizeof(req
), RTA_PRIORITY
, metric
);
1175 } else if (strcmp(*argv
, "scope") == 0) {
1179 if (rtnl_rtscope_a2n(&scope
, *argv
))
1180 invarg("invalid \"scope\" value\n", *argv
);
1181 req
.r
.rtm_scope
= scope
;
1183 } else if (strcmp(*argv
, "mtu") == 0) {
1187 if (strcmp(*argv
, "lock") == 0) {
1188 mxlock
|= (1<<RTAX_MTU
);
1191 if (get_unsigned(&mtu
, *argv
, 0))
1192 invarg("\"mtu\" value is invalid\n", *argv
);
1193 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_MTU
, mtu
);
1194 } else if (strcmp(*argv
, "hoplimit") == 0) {
1195 unsigned int hoplimit
;
1198 if (strcmp(*argv
, "lock") == 0) {
1199 mxlock
|= (1<<RTAX_HOPLIMIT
);
1202 if (get_unsigned(&hoplimit
, *argv
, 0) || hoplimit
> 255)
1203 invarg("\"hoplimit\" value is invalid\n", *argv
);
1204 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_HOPLIMIT
, hoplimit
);
1205 } else if (strcmp(*argv
, "advmss") == 0) {
1209 if (strcmp(*argv
, "lock") == 0) {
1210 mxlock
|= (1<<RTAX_ADVMSS
);
1213 if (get_unsigned(&mss
, *argv
, 0))
1214 invarg("\"mss\" value is invalid\n", *argv
);
1215 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_ADVMSS
, mss
);
1216 } else if (matches(*argv
, "reordering") == 0) {
1220 if (strcmp(*argv
, "lock") == 0) {
1221 mxlock
|= (1<<RTAX_REORDERING
);
1224 if (get_unsigned(&reord
, *argv
, 0))
1225 invarg("\"reordering\" value is invalid\n", *argv
);
1226 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_REORDERING
, reord
);
1227 } else if (strcmp(*argv
, "rtt") == 0) {
1231 if (strcmp(*argv
, "lock") == 0) {
1232 mxlock
|= (1<<RTAX_RTT
);
1235 if (get_time_rtt(&rtt
, *argv
, &raw
))
1236 invarg("\"rtt\" value is invalid\n", *argv
);
1237 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTT
,
1238 (raw
) ? rtt
: rtt
* 8);
1239 } else if (strcmp(*argv
, "rto_min") == 0) {
1240 unsigned int rto_min
;
1243 mxlock
|= (1<<RTAX_RTO_MIN
);
1244 if (get_time_rtt(&rto_min
, *argv
, &raw
))
1245 invarg("\"rto_min\" value is invalid\n",
1247 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTO_MIN
,
1249 } else if (matches(*argv
, "window") == 0) {
1253 if (strcmp(*argv
, "lock") == 0) {
1254 mxlock
|= (1<<RTAX_WINDOW
);
1257 if (get_unsigned(&win
, *argv
, 0))
1258 invarg("\"window\" value is invalid\n", *argv
);
1259 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_WINDOW
, win
);
1260 } else if (matches(*argv
, "cwnd") == 0) {
1264 if (strcmp(*argv
, "lock") == 0) {
1265 mxlock
|= (1<<RTAX_CWND
);
1268 if (get_unsigned(&win
, *argv
, 0))
1269 invarg("\"cwnd\" value is invalid\n", *argv
);
1270 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_CWND
, win
);
1271 } else if (matches(*argv
, "initcwnd") == 0) {
1275 if (strcmp(*argv
, "lock") == 0) {
1276 mxlock
|= (1<<RTAX_INITCWND
);
1279 if (get_unsigned(&win
, *argv
, 0))
1280 invarg("\"initcwnd\" value is invalid\n", *argv
);
1281 rta_addattr32(mxrta
, sizeof(mxbuf
),
1282 RTAX_INITCWND
, win
);
1283 } else if (matches(*argv
, "initrwnd") == 0) {
1287 if (strcmp(*argv
, "lock") == 0) {
1288 mxlock
|= (1<<RTAX_INITRWND
);
1291 if (get_unsigned(&win
, *argv
, 0))
1292 invarg("\"initrwnd\" value is invalid\n", *argv
);
1293 rta_addattr32(mxrta
, sizeof(mxbuf
),
1294 RTAX_INITRWND
, win
);
1295 } else if (matches(*argv
, "features") == 0) {
1296 unsigned int features
= 0;
1301 if (strcmp(*argv
, "ecn") == 0)
1302 features
|= RTAX_FEATURE_ECN
;
1304 invarg("\"features\" value not valid\n", *argv
);
1308 rta_addattr32(mxrta
, sizeof(mxbuf
),
1309 RTAX_FEATURES
, features
);
1310 } else if (matches(*argv
, "quickack") == 0) {
1311 unsigned int quickack
;
1314 if (get_unsigned(&quickack
, *argv
, 0))
1315 invarg("\"quickack\" value is invalid\n", *argv
);
1316 if (quickack
!= 1 && quickack
!= 0)
1317 invarg("\"quickack\" value should be 0 or 1\n", *argv
);
1318 rta_addattr32(mxrta
, sizeof(mxbuf
),
1319 RTAX_QUICKACK
, quickack
);
1320 } else if (matches(*argv
, "congctl") == 0) {
1322 if (strcmp(*argv
, "lock") == 0) {
1323 mxlock
|= 1 << RTAX_CC_ALGO
;
1326 rta_addattr_l(mxrta
, sizeof(mxbuf
), RTAX_CC_ALGO
, *argv
,
1328 } else if (matches(*argv
, "rttvar") == 0) {
1332 if (strcmp(*argv
, "lock") == 0) {
1333 mxlock
|= (1<<RTAX_RTTVAR
);
1336 if (get_time_rtt(&win
, *argv
, &raw
))
1337 invarg("\"rttvar\" value is invalid\n", *argv
);
1338 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTTVAR
,
1339 (raw
) ? win
: win
* 4);
1340 } else if (matches(*argv
, "ssthresh") == 0) {
1344 if (strcmp(*argv
, "lock") == 0) {
1345 mxlock
|= (1<<RTAX_SSTHRESH
);
1348 if (get_unsigned(&win
, *argv
, 0))
1349 invarg("\"ssthresh\" value is invalid\n", *argv
);
1350 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_SSTHRESH
, win
);
1351 } else if (matches(*argv
, "realms") == 0) {
1355 if (get_rt_realms_or_raw(&realm
, *argv
))
1356 invarg("\"realm\" value is invalid\n", *argv
);
1357 addattr32(&req
.n
, sizeof(req
), RTA_FLOW
, realm
);
1358 } else if (strcmp(*argv
, "onlink") == 0) {
1359 req
.r
.rtm_flags
|= RTNH_F_ONLINK
;
1360 } else if (strcmp(*argv
, "nexthop") == 0) {
1363 } else if (matches(*argv
, "protocol") == 0) {
1367 if (rtnl_rtprot_a2n(&prot
, *argv
))
1368 invarg("\"protocol\" value is invalid\n", *argv
);
1369 req
.r
.rtm_protocol
= prot
;
1370 } else if (matches(*argv
, "table") == 0) {
1374 if (rtnl_rttable_a2n(&tid
, *argv
))
1375 invarg("\"table\" value is invalid\n", *argv
);
1377 req
.r
.rtm_table
= tid
;
1379 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1380 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1383 } else if (matches(*argv
, "vrf") == 0) {
1387 tid
= ipvrf_get_table(*argv
);
1389 invarg("Invalid VRF\n", *argv
);
1391 req
.r
.rtm_table
= tid
;
1393 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1394 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1397 } else if (strcmp(*argv
, "dev") == 0 ||
1398 strcmp(*argv
, "oif") == 0) {
1401 } else if (matches(*argv
, "pref") == 0) {
1405 if (strcmp(*argv
, "low") == 0)
1406 pref
= ICMPV6_ROUTER_PREF_LOW
;
1407 else if (strcmp(*argv
, "medium") == 0)
1408 pref
= ICMPV6_ROUTER_PREF_MEDIUM
;
1409 else if (strcmp(*argv
, "high") == 0)
1410 pref
= ICMPV6_ROUTER_PREF_HIGH
;
1411 else if (get_u8(&pref
, *argv
, 0))
1412 invarg("\"pref\" value is invalid\n", *argv
);
1413 addattr8(&req
.n
, sizeof(req
), RTA_PREF
, pref
);
1414 } else if (strcmp(*argv
, "encap") == 0) {
1416 struct rtattr
*rta
= (void *)buf
;
1418 rta
->rta_type
= RTA_ENCAP
;
1419 rta
->rta_len
= RTA_LENGTH(0);
1421 lwt_parse_encap(rta
, sizeof(buf
), &argc
, &argv
);
1423 if (rta
->rta_len
> RTA_LENGTH(0))
1424 addraw_l(&req
.n
, 1024
1425 , RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1426 } else if (strcmp(*argv
, "ttl-propagate") == 0) {
1430 if (matches(*argv
, "enabled") == 0)
1432 else if (matches(*argv
, "disabled") == 0)
1435 invarg("\"ttl-propagate\" value is invalid\n",
1438 addattr8(&req
.n
, sizeof(req
), RTA_TTL_PROPAGATE
,
1440 } else if (matches(*argv
, "fastopen_no_cookie") == 0) {
1441 unsigned int fastopen_no_cookie
;
1444 if (get_unsigned(&fastopen_no_cookie
, *argv
, 0))
1445 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv
);
1446 if (fastopen_no_cookie
!= 1 && fastopen_no_cookie
!= 0)
1447 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv
);
1448 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_FASTOPEN_NO_COOKIE
, fastopen_no_cookie
);
1453 if (strcmp(*argv
, "to") == 0) {
1456 if ((**argv
< '0' || **argv
> '9') &&
1457 rtnl_rtntype_a2n(&type
, *argv
) == 0) {
1459 req
.r
.rtm_type
= type
;
1463 if (matches(*argv
, "help") == 0)
1466 duparg2("to", *argv
);
1467 get_prefix(&dst
, *argv
, req
.r
.rtm_family
);
1468 if (req
.r
.rtm_family
== AF_UNSPEC
)
1469 req
.r
.rtm_family
= dst
.family
;
1470 req
.r
.rtm_dst_len
= dst
.bitlen
;
1473 addattr_l(&req
.n
, sizeof(req
),
1474 RTA_DST
, &dst
.data
, dst
.bytelen
);
1483 int idx
= ll_name_to_index(d
);
1487 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
1490 if (mxrta
->rta_len
> RTA_LENGTH(0)) {
1492 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_LOCK
, mxlock
);
1493 addattr_l(&req
.n
, sizeof(req
), RTA_METRICS
, RTA_DATA(mxrta
), RTA_PAYLOAD(mxrta
));
1496 if (nhs_ok
&& parse_nexthops(&req
.n
, &req
.r
, argc
, argv
))
1499 if (req
.r
.rtm_family
== AF_UNSPEC
)
1500 req
.r
.rtm_family
= AF_INET
;
1503 if (req
.r
.rtm_type
== RTN_LOCAL
||
1504 req
.r
.rtm_type
== RTN_BROADCAST
||
1505 req
.r
.rtm_type
== RTN_NAT
||
1506 req
.r
.rtm_type
== RTN_ANYCAST
)
1507 req
.r
.rtm_table
= RT_TABLE_LOCAL
;
1510 if (req
.r
.rtm_family
== AF_INET6
||
1511 req
.r
.rtm_family
== AF_MPLS
)
1512 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1513 else if (req
.r
.rtm_type
== RTN_LOCAL
||
1514 req
.r
.rtm_type
== RTN_NAT
)
1515 req
.r
.rtm_scope
= RT_SCOPE_HOST
;
1516 else if (req
.r
.rtm_type
== RTN_BROADCAST
||
1517 req
.r
.rtm_type
== RTN_MULTICAST
||
1518 req
.r
.rtm_type
== RTN_ANYCAST
)
1519 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1520 else if (req
.r
.rtm_type
== RTN_UNICAST
||
1521 req
.r
.rtm_type
== RTN_UNSPEC
) {
1522 if (cmd
== RTM_DELROUTE
)
1523 req
.r
.rtm_scope
= RT_SCOPE_NOWHERE
;
1524 else if (!gw_ok
&& !nhs_ok
)
1525 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1529 if (!type_ok
&& req
.r
.rtm_family
== AF_MPLS
)
1530 req
.r
.rtm_type
= RTN_UNICAST
;
1532 if (rtnl_talk(&rth
, &req
.n
, NULL
) < 0)
1538 static int rtnl_rtcache_request(struct rtnl_handle
*rth
, int family
)
1541 struct nlmsghdr nlh
;
1544 .nlh
.nlmsg_len
= sizeof(req
),
1545 .nlh
.nlmsg_type
= RTM_GETROUTE
,
1546 .nlh
.nlmsg_flags
= NLM_F_ROOT
| NLM_F_REQUEST
,
1547 .nlh
.nlmsg_seq
= rth
->dump
= ++rth
->seq
,
1548 .rtm
.rtm_family
= family
,
1549 .rtm
.rtm_flags
= RTM_F_CLONED
,
1551 struct sockaddr_nl nladdr
= { .nl_family
= AF_NETLINK
};
1553 return sendto(rth
->fd
, (void *)&req
, sizeof(req
), 0, (struct sockaddr
*)&nladdr
, sizeof(nladdr
));
1556 static int iproute_flush_cache(void)
1558 #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1561 int flush_fd
= open(ROUTE_FLUSH_PATH
, O_WRONLY
);
1562 char *buffer
= "-1";
1565 fprintf(stderr
, "Cannot open \"%s\": %s\n",
1566 ROUTE_FLUSH_PATH
, strerror(errno
));
1570 len
= strlen(buffer
);
1572 if ((write(flush_fd
, (void *)buffer
, len
)) < len
) {
1573 fprintf(stderr
, "Cannot flush routing cache\n");
1581 static __u32 route_dump_magic
= 0x45311224;
1583 static int save_route(struct nlmsghdr
*n
, void *arg
)
1586 int len
= n
->nlmsg_len
;
1587 struct rtmsg
*r
= NLMSG_DATA(n
);
1588 struct rtattr
*tb
[RTA_MAX
+1];
1591 host_len
= af_bit_len(r
->rtm_family
);
1592 len
-= NLMSG_LENGTH(sizeof(*r
));
1593 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
1595 if (!filter_nlmsg(n
, tb
, host_len
))
1598 ret
= write(STDOUT_FILENO
, n
, n
->nlmsg_len
);
1599 if ((ret
> 0) && (ret
!= n
->nlmsg_len
)) {
1600 fprintf(stderr
, "Short write while saving nlmsg\n");
1604 return ret
== n
->nlmsg_len
? 0 : ret
;
1607 static int save_route_prep(void)
1611 if (isatty(STDOUT_FILENO
)) {
1612 fprintf(stderr
, "Not sending a binary stream to stdout\n");
1616 ret
= write(STDOUT_FILENO
, &route_dump_magic
, sizeof(route_dump_magic
));
1617 if (ret
!= sizeof(route_dump_magic
)) {
1618 fprintf(stderr
, "Can't write magic to dump file\n");
1625 static int iproute_flush(int do_ipv6
, rtnl_filter_t filter_fn
)
1627 time_t start
= time(0);
1628 char flushb
[4096-512];
1632 if (filter
.cloned
) {
1633 if (do_ipv6
!= AF_INET6
) {
1634 iproute_flush_cache();
1636 printf("*** IPv4 routing cache is flushed.\n");
1638 if (do_ipv6
== AF_INET
)
1642 filter
.flushb
= flushb
;
1644 filter
.flushe
= sizeof(flushb
);
1647 if (rtnl_routedump_req(&rth
, do_ipv6
) < 0) {
1648 perror("Cannot send dump request");
1652 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1653 fprintf(stderr
, "Flush terminated\n");
1656 if (filter
.flushed
== 0) {
1659 (!filter
.cloned
|| do_ipv6
== AF_INET6
))
1660 printf("Nothing to flush.\n");
1662 printf("*** Flush is complete after %d round%s ***\n",
1663 round
, round
> 1 ? "s" : "");
1669 ret
= flush_update();
1673 if (time(0) - start
> 30) {
1674 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1675 (long)(time(0) - start
), filter
.flushed
);
1680 printf("\n*** Round %d, deleting %d entries ***\n",
1681 round
, filter
.flushed
);
1687 static int iproute_list_flush_or_save(int argc
, char **argv
, int action
)
1689 int do_ipv6
= preferred_family
;
1692 unsigned int mark
= 0;
1693 rtnl_filter_t filter_fn
;
1695 if (action
== IPROUTE_SAVE
) {
1696 if (save_route_prep())
1699 filter_fn
= save_route
;
1701 filter_fn
= print_route
;
1703 iproute_reset_filter(0);
1704 filter
.tb
= RT_TABLE_MAIN
;
1706 if ((action
== IPROUTE_FLUSH
) && argc
<= 0) {
1707 fprintf(stderr
, "\"ip route flush\" requires arguments.\n");
1712 if (matches(*argv
, "table") == 0) {
1716 if (rtnl_rttable_a2n(&tid
, *argv
)) {
1717 if (strcmp(*argv
, "all") == 0) {
1719 } else if (strcmp(*argv
, "cache") == 0) {
1721 } else if (strcmp(*argv
, "help") == 0) {
1724 invarg("table id value is invalid\n", *argv
);
1728 } else if (matches(*argv
, "vrf") == 0) {
1732 tid
= ipvrf_get_table(*argv
);
1734 invarg("Invalid VRF\n", *argv
);
1736 filter
.typemask
= ~(1 << RTN_LOCAL
| 1<<RTN_BROADCAST
);
1737 } else if (matches(*argv
, "cached") == 0 ||
1738 matches(*argv
, "cloned") == 0) {
1740 } else if (strcmp(*argv
, "tos") == 0 ||
1741 matches(*argv
, "dsfield") == 0) {
1745 if (rtnl_dsfield_a2n(&tos
, *argv
))
1746 invarg("TOS value is invalid\n", *argv
);
1748 filter
.tosmask
= -1;
1749 } else if (matches(*argv
, "protocol") == 0) {
1753 filter
.protocolmask
= -1;
1754 if (rtnl_rtprot_a2n(&prot
, *argv
)) {
1755 if (strcmp(*argv
, "all") != 0)
1756 invarg("invalid \"protocol\"\n", *argv
);
1758 filter
.protocolmask
= 0;
1760 filter
.protocol
= prot
;
1761 } else if (matches(*argv
, "scope") == 0) {
1765 filter
.scopemask
= -1;
1766 if (rtnl_rtscope_a2n(&scope
, *argv
)) {
1767 if (strcmp(*argv
, "all") != 0)
1768 invarg("invalid \"scope\"\n", *argv
);
1769 scope
= RT_SCOPE_NOWHERE
;
1770 filter
.scopemask
= 0;
1772 filter
.scope
= scope
;
1773 } else if (matches(*argv
, "type") == 0) {
1777 if (rtnl_rtntype_a2n(&type
, *argv
))
1778 invarg("node type value is invalid\n", *argv
);
1779 filter
.typemask
= (1<<type
);
1780 } else if (strcmp(*argv
, "dev") == 0 ||
1781 strcmp(*argv
, "oif") == 0) {
1784 } else if (strcmp(*argv
, "iif") == 0) {
1787 } else if (strcmp(*argv
, "mark") == 0) {
1789 if (get_unsigned(&mark
, *argv
, 0))
1790 invarg("invalid mark value", *argv
);
1791 filter
.markmask
= -1;
1792 } else if (matches(*argv
, "metric") == 0 ||
1793 matches(*argv
, "priority") == 0 ||
1794 strcmp(*argv
, "preference") == 0) {
1798 if (get_u32(&metric
, *argv
, 0))
1799 invarg("\"metric\" value is invalid\n", *argv
);
1800 filter
.metric
= metric
;
1801 filter
.metricmask
= -1;
1802 } else if (strcmp(*argv
, "via") == 0) {
1806 family
= read_family(*argv
);
1807 if (family
== AF_UNSPEC
)
1811 get_prefix(&filter
.rvia
, *argv
, family
);
1812 } else if (strcmp(*argv
, "src") == 0) {
1814 get_prefix(&filter
.rprefsrc
, *argv
, do_ipv6
);
1815 } else if (matches(*argv
, "realms") == 0) {
1819 if (get_rt_realms_or_raw(&realm
, *argv
))
1820 invarg("invalid realms\n", *argv
);
1821 filter
.realm
= realm
;
1822 filter
.realmmask
= ~0U;
1823 if ((filter
.realm
&0xFFFF) == 0 &&
1824 (*argv
)[strlen(*argv
) - 1] == '/')
1825 filter
.realmmask
&= ~0xFFFF;
1826 if ((filter
.realm
&0xFFFF0000U
) == 0 &&
1827 (strchr(*argv
, '/') == NULL
||
1829 filter
.realmmask
&= ~0xFFFF0000U
;
1830 } else if (matches(*argv
, "from") == 0) {
1832 if (matches(*argv
, "root") == 0) {
1834 get_prefix(&filter
.rsrc
, *argv
, do_ipv6
);
1835 } else if (matches(*argv
, "match") == 0) {
1837 get_prefix(&filter
.msrc
, *argv
, do_ipv6
);
1839 if (matches(*argv
, "exact") == 0) {
1842 get_prefix(&filter
.msrc
, *argv
, do_ipv6
);
1843 filter
.rsrc
= filter
.msrc
;
1846 if (matches(*argv
, "to") == 0) {
1849 if (matches(*argv
, "root") == 0) {
1851 get_prefix(&filter
.rdst
, *argv
, do_ipv6
);
1852 } else if (matches(*argv
, "match") == 0) {
1854 get_prefix(&filter
.mdst
, *argv
, do_ipv6
);
1856 if (matches(*argv
, "exact") == 0) {
1859 get_prefix(&filter
.mdst
, *argv
, do_ipv6
);
1860 filter
.rdst
= filter
.mdst
;
1866 if (do_ipv6
== AF_UNSPEC
&& filter
.tb
)
1873 idx
= ll_name_to_index(id
);
1877 filter
.iifmask
= -1;
1880 idx
= ll_name_to_index(od
);
1884 filter
.oifmask
= -1;
1889 if (action
== IPROUTE_FLUSH
)
1890 return iproute_flush(do_ipv6
, filter_fn
);
1892 if (!filter
.cloned
) {
1893 if (rtnl_routedump_req(&rth
, do_ipv6
) < 0) {
1894 perror("Cannot send dump request");
1898 if (rtnl_rtcache_request(&rth
, do_ipv6
) < 0) {
1899 perror("Cannot send dump request");
1906 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1907 fprintf(stderr
, "Dump terminated\n");
1917 static int iproute_get(int argc
, char **argv
)
1924 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1925 .n
.nlmsg_flags
= NLM_F_REQUEST
,
1926 .n
.nlmsg_type
= RTM_GETROUTE
,
1927 .r
.rtm_family
= preferred_family
,
1931 struct nlmsghdr
*answer
;
1935 unsigned int mark
= 0;
1937 iproute_reset_filter(0);
1941 if (strcmp(*argv
, "tos") == 0 ||
1942 matches(*argv
, "dsfield") == 0) {
1946 if (rtnl_dsfield_a2n(&tos
, *argv
))
1947 invarg("TOS value is invalid\n", *argv
);
1948 req
.r
.rtm_tos
= tos
;
1949 } else if (matches(*argv
, "from") == 0) {
1953 if (matches(*argv
, "help") == 0)
1956 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1957 if (req
.r
.rtm_family
== AF_UNSPEC
)
1958 req
.r
.rtm_family
= addr
.family
;
1960 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
,
1961 &addr
.data
, addr
.bytelen
);
1962 req
.r
.rtm_src_len
= addr
.bitlen
;
1963 } else if (matches(*argv
, "iif") == 0) {
1966 } else if (matches(*argv
, "mark") == 0) {
1968 if (get_unsigned(&mark
, *argv
, 0))
1969 invarg("invalid mark value", *argv
);
1970 } else if (matches(*argv
, "oif") == 0 ||
1971 strcmp(*argv
, "dev") == 0) {
1974 } else if (matches(*argv
, "notify") == 0) {
1975 req
.r
.rtm_flags
|= RTM_F_NOTIFY
;
1976 } else if (matches(*argv
, "connected") == 0) {
1978 } else if (matches(*argv
, "vrf") == 0) {
1980 if (!name_is_vrf(*argv
))
1981 invarg("Invalid VRF\n", *argv
);
1983 } else if (matches(*argv
, "uid") == 0) {
1987 if (get_unsigned(&uid
, *argv
, 0))
1988 invarg("invalid UID\n", *argv
);
1989 addattr32(&req
.n
, sizeof(req
), RTA_UID
, uid
);
1990 } else if (matches(*argv
, "fibmatch") == 0) {
1992 } else if (strcmp(*argv
, "as") == 0) {
1996 if (strcmp(*argv
, "to") == 0)
1998 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1999 if (req
.r
.rtm_family
== AF_UNSPEC
)
2000 req
.r
.rtm_family
= addr
.family
;
2001 addattr_l(&req
.n
, sizeof(req
), RTA_NEWDST
,
2002 &addr
.data
, addr
.bytelen
);
2003 } else if (matches(*argv
, "sport") == 0) {
2007 if (get_be16(&sport
, *argv
, 0))
2008 invarg("invalid sport\n", *argv
);
2009 addattr16(&req
.n
, sizeof(req
), RTA_SPORT
, sport
);
2010 } else if (matches(*argv
, "dport") == 0) {
2014 if (get_be16(&dport
, *argv
, 0))
2015 invarg("invalid dport\n", *argv
);
2016 addattr16(&req
.n
, sizeof(req
), RTA_DPORT
, dport
);
2017 } else if (matches(*argv
, "ipproto") == 0) {
2021 ipproto
= inet_proto_a2n(*argv
);
2023 invarg("Invalid \"ipproto\" value\n",
2025 addattr8(&req
.n
, sizeof(req
), RTA_IP_PROTO
, ipproto
);
2029 if (strcmp(*argv
, "to") == 0) {
2032 if (matches(*argv
, "help") == 0)
2034 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
2035 if (req
.r
.rtm_family
== AF_UNSPEC
)
2036 req
.r
.rtm_family
= addr
.family
;
2038 addattr_l(&req
.n
, sizeof(req
),
2039 RTA_DST
, &addr
.data
, addr
.bytelen
);
2040 req
.r
.rtm_dst_len
= addr
.bitlen
;
2045 if (req
.r
.rtm_dst_len
== 0) {
2046 fprintf(stderr
, "need at least a destination address\n");
2054 idx
= ll_name_to_index(idev
);
2057 addattr32(&req
.n
, sizeof(req
), RTA_IIF
, idx
);
2060 idx
= ll_name_to_index(odev
);
2063 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
2067 addattr32(&req
.n
, sizeof(req
), RTA_MARK
, mark
);
2069 if (req
.r
.rtm_family
== AF_UNSPEC
)
2070 req
.r
.rtm_family
= AF_INET
;
2072 req
.r
.rtm_flags
|= RTM_F_LOOKUP_TABLE
;
2074 req
.r
.rtm_flags
|= RTM_F_FIB_MATCH
;
2076 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2079 if (connected
&& !from_ok
) {
2080 struct rtmsg
*r
= NLMSG_DATA(answer
);
2081 int len
= answer
->nlmsg_len
;
2082 struct rtattr
*tb
[RTA_MAX
+1];
2084 if (print_route(answer
, (void *)stdout
) < 0) {
2085 fprintf(stderr
, "An error :-)\n");
2090 if (answer
->nlmsg_type
!= RTM_NEWROUTE
) {
2091 fprintf(stderr
, "Not a route?\n");
2095 len
-= NLMSG_LENGTH(sizeof(*r
));
2097 fprintf(stderr
, "Wrong len %d\n", len
);
2102 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2104 if (tb
[RTA_PREFSRC
]) {
2105 tb
[RTA_PREFSRC
]->rta_type
= RTA_SRC
;
2106 r
->rtm_src_len
= 8*RTA_PAYLOAD(tb
[RTA_PREFSRC
]);
2107 } else if (!tb
[RTA_SRC
]) {
2108 fprintf(stderr
, "Failed to connect the route\n");
2112 if (!odev
&& tb
[RTA_OIF
])
2113 tb
[RTA_OIF
]->rta_type
= 0;
2114 if (tb
[RTA_GATEWAY
])
2115 tb
[RTA_GATEWAY
]->rta_type
= 0;
2117 tb
[RTA_VIA
]->rta_type
= 0;
2118 if (!idev
&& tb
[RTA_IIF
])
2119 tb
[RTA_IIF
]->rta_type
= 0;
2120 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
2121 req
.n
.nlmsg_type
= RTM_GETROUTE
;
2124 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2128 if (print_route(answer
, (void *)stdout
) < 0) {
2129 fprintf(stderr
, "An error :-)\n");
2138 static int rtattr_cmp(const struct rtattr
*rta1
, const struct rtattr
*rta2
)
2140 if (!rta1
|| !rta2
|| rta1
->rta_len
!= rta2
->rta_len
)
2143 return memcmp(RTA_DATA(rta1
), RTA_DATA(rta2
), RTA_PAYLOAD(rta1
));
2146 static int restore_handler(struct rtnl_ctrl_data
*ctrl
,
2147 struct nlmsghdr
*n
, void *arg
)
2149 struct rtmsg
*r
= NLMSG_DATA(n
);
2150 struct rtattr
*tb
[RTA_MAX
+1];
2151 int len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
));
2152 int ret
, prio
= *(int *)arg
;
2154 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2156 /* Restore routes in correct order:
2157 * 0. ones for local addresses,
2158 * 1. ones for local networks,
2159 * 2. others (remote networks/hosts).
2161 if (!prio
&& !tb
[RTA_GATEWAY
] && (!tb
[RTA_PREFSRC
] ||
2162 !rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
])))
2164 else if (prio
== 1 && !tb
[RTA_GATEWAY
] && tb
[RTA_PREFSRC
] &&
2165 rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
]))
2167 else if (prio
== 2 && tb
[RTA_GATEWAY
])
2173 n
->nlmsg_flags
|= NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_ACK
;
2177 ret
= rtnl_talk(&rth
, n
, NULL
);
2178 if ((ret
< 0) && (errno
== EEXIST
))
2184 static int route_dump_check_magic(void)
2189 if (isatty(STDIN_FILENO
)) {
2190 fprintf(stderr
, "Can't restore route dump from a terminal\n");
2194 ret
= fread(&magic
, sizeof(magic
), 1, stdin
);
2195 if (magic
!= route_dump_magic
) {
2196 fprintf(stderr
, "Magic mismatch (%d elems, %x magic)\n", ret
, magic
);
2203 static int iproute_restore(void)
2207 if (route_dump_check_magic())
2212 perror("Failed to restore: ftell");
2216 for (prio
= 0; prio
< 3; prio
++) {
2219 err
= rtnl_from_file(stdin
, &restore_handler
, &prio
);
2223 if (fseek(stdin
, pos
, SEEK_SET
) == -1) {
2224 perror("Failed to restore: fseek");
2232 static int show_handler(struct rtnl_ctrl_data
*ctrl
,
2233 struct nlmsghdr
*n
, void *arg
)
2235 print_route(n
, stdout
);
2239 static int iproute_showdump(void)
2241 if (route_dump_check_magic())
2244 if (rtnl_from_file(stdin
, &show_handler
, NULL
))
2250 void iproute_reset_filter(int ifindex
)
2252 memset(&filter
, 0, sizeof(filter
));
2253 filter
.mdst
.bitlen
= -1;
2254 filter
.msrc
.bitlen
= -1;
2255 filter
.oif
= ifindex
;
2257 filter
.oifmask
= -1;
2260 int do_iproute(int argc
, char **argv
)
2263 return iproute_list_flush_or_save(0, NULL
, IPROUTE_LIST
);
2265 if (matches(*argv
, "add") == 0)
2266 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_EXCL
,
2268 if (matches(*argv
, "change") == 0 || strcmp(*argv
, "chg") == 0)
2269 return iproute_modify(RTM_NEWROUTE
, NLM_F_REPLACE
,
2271 if (matches(*argv
, "replace") == 0)
2272 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_REPLACE
,
2274 if (matches(*argv
, "prepend") == 0)
2275 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
,
2277 if (matches(*argv
, "append") == 0)
2278 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_APPEND
,
2280 if (matches(*argv
, "test") == 0)
2281 return iproute_modify(RTM_NEWROUTE
, NLM_F_EXCL
,
2283 if (matches(*argv
, "delete") == 0)
2284 return iproute_modify(RTM_DELROUTE
, 0,
2286 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
2287 || matches(*argv
, "lst") == 0)
2288 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_LIST
);
2289 if (matches(*argv
, "get") == 0)
2290 return iproute_get(argc
-1, argv
+1);
2291 if (matches(*argv
, "flush") == 0)
2292 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_FLUSH
);
2293 if (matches(*argv
, "save") == 0)
2294 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_SAVE
);
2295 if (matches(*argv
, "restore") == 0)
2296 return iproute_restore();
2297 if (matches(*argv
, "showdump") == 0)
2298 return iproute_showdump();
2299 if (matches(*argv
, "help") == 0)
2303 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv
);