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 | 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", "%#llx ", 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
);
457 static void print_rta_cacheinfo(FILE *fp
, const struct rta_cacheinfo
*ci
)
464 if (ci
->rta_expires
!= 0)
465 print_int(PRINT_ANY
, "expires",
466 "expires %dsec ", ci
->rta_expires
/hz
);
467 if (ci
->rta_error
!= 0)
468 print_uint(PRINT_ANY
, "error",
469 "error %u ", ci
->rta_error
);
473 print_uint(PRINT_ANY
, "users",
474 "users %u ", ci
->rta_clntref
);
475 if (ci
->rta_used
!= 0)
476 print_uint(PRINT_ANY
, "used",
477 "used %u ", ci
->rta_used
);
478 if (ci
->rta_lastuse
!= 0)
479 print_uint(PRINT_ANY
, "age",
480 "age %usec ", ci
->rta_lastuse
/hz
);
483 print_0xhex(PRINT_ANY
, "ipid",
484 "ipid 0x%04llx ", ci
->rta_id
);
485 if (ci
->rta_ts
|| ci
->rta_tsage
) {
486 print_0xhex(PRINT_ANY
, "ts",
487 "ts 0x%llx", ci
->rta_ts
);
488 print_uint(PRINT_ANY
, "tsage",
489 "tsage %usec ", ci
->rta_tsage
);
493 static void print_rta_flow(FILE *fp
, const struct rtattr
*rta
)
495 __u32 to
= rta_getattr_u32(rta
);
496 __u32 from
= to
>> 16;
500 if (is_json_context()) {
501 open_json_object("flow");
504 print_string(PRINT_JSON
, "from", NULL
,
505 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
506 print_string(PRINT_JSON
, "to", NULL
,
507 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
510 fprintf(fp
, "realm%s ", from
? "s" : "");
513 print_string(PRINT_FP
, NULL
, "%s/",
514 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
515 print_string(PRINT_FP
, NULL
, "%s ",
516 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
520 static void print_rta_newdst(FILE *fp
, const struct rtmsg
*r
,
521 const struct rtattr
*rta
)
523 const char *newdst
= format_host_rta(r
->rtm_family
, rta
);
525 if (is_json_context())
526 print_string(PRINT_JSON
, "to", NULL
, newdst
);
528 fprintf(fp
, "as to ");
529 print_color_string(PRINT_FP
,
530 ifa_family_color(r
->rtm_family
),
531 NULL
, "%s ", newdst
);
535 static void print_rta_gateway(FILE *fp
, const struct rtmsg
*r
,
536 const struct rtattr
*rta
)
538 const char *gateway
= format_host_rta(r
->rtm_family
, rta
);
540 if (is_json_context())
541 print_string(PRINT_JSON
, "gateway", NULL
, gateway
);
544 print_color_string(PRINT_FP
,
545 ifa_family_color(r
->rtm_family
),
546 NULL
, "%s ", gateway
);
550 static void print_rta_via(FILE *fp
, const struct rtattr
*rta
)
552 size_t len
= RTA_PAYLOAD(rta
) - 2;
553 const struct rtvia
*via
= RTA_DATA(rta
);
555 if (is_json_context()) {
556 open_json_object("via");
557 print_string(PRINT_JSON
, "family", NULL
,
558 family_name(via
->rtvia_family
));
559 print_string(PRINT_JSON
, "host", NULL
,
560 format_host(via
->rtvia_family
, len
,
564 print_string(PRINT_FP
, NULL
, "via %s ",
565 family_name(via
->rtvia_family
));
566 print_color_string(PRINT_FP
,
567 ifa_family_color(via
->rtvia_family
),
569 format_host(via
->rtvia_family
,
570 len
, via
->rtvia_addr
));
574 static void print_rta_metrics(FILE *fp
, const struct rtattr
*rta
)
576 struct rtattr
*mxrta
[RTAX_MAX
+1];
577 unsigned int mxlock
= 0;
580 open_json_array(PRINT_JSON
, "metrics");
582 parse_rtattr(mxrta
, RTAX_MAX
, RTA_DATA(rta
), RTA_PAYLOAD(rta
));
584 if (mxrta
[RTAX_LOCK
])
585 mxlock
= rta_getattr_u32(mxrta
[RTAX_LOCK
]);
587 for (i
= 2; i
<= RTAX_MAX
; i
++) {
590 if (mxrta
[i
] == NULL
&& !(mxlock
& (1 << i
)))
593 if (mxrta
[i
] != NULL
&& i
!= RTAX_CC_ALGO
)
594 val
= rta_getattr_u32(mxrta
[i
]);
596 if (i
== RTAX_HOPLIMIT
&& (int)val
== -1)
599 if (!is_json_context()) {
600 if (i
< sizeof(mx_names
)/sizeof(char *) && mx_names
[i
])
601 fprintf(fp
, "%s ", mx_names
[i
]);
603 fprintf(fp
, "metric %d ", i
);
606 fprintf(fp
, "lock ");
611 print_rtax_features(fp
, val
);
614 fprintf(fp
, "%u ", val
);
622 else if (i
== RTAX_RTTVAR
)
625 if (is_json_context())
626 print_uint(PRINT_JSON
, mx_names
[i
],
630 fprintf(fp
, "%gs ", val
/1e3
);
632 fprintf(fp
, "%ums ", val
);
636 print_string(PRINT_ANY
, "congestion",
637 "%s ", rta_getattr_str(mxrta
[i
]));
642 close_json_array(PRINT_JSON
, NULL
);
645 static void print_rta_multipath(FILE *fp
, const struct rtmsg
*r
,
648 const struct rtnexthop
*nh
= RTA_DATA(rta
);
649 int len
= RTA_PAYLOAD(rta
);
652 while (len
>= sizeof(*nh
)) {
653 struct rtattr
*tb
[RTA_MAX
+ 1];
655 if (nh
->rtnh_len
> len
)
658 if (!is_json_context()) {
659 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
660 r
->rtm_type
== RTN_MULTICAST
) {
662 fprintf(fp
, "Oifs: ");
668 fprintf(fp
, "%s\tnexthop ", _SL_
);
671 if (nh
->rtnh_len
> sizeof(*nh
)) {
672 parse_rtattr(tb
, RTA_MAX
, RTNH_DATA(nh
),
673 nh
->rtnh_len
- sizeof(*nh
));
680 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
682 print_rta_gateway(fp
, r
, tb
[RTA_GATEWAY
]);
684 print_rta_via(fp
, tb
[RTA_VIA
]);
686 print_rta_flow(fp
, tb
[RTA_FLOW
]);
689 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
690 r
->rtm_type
== RTN_MULTICAST
) {
691 fprintf(fp
, "%s", ll_index_to_name(nh
->rtnh_ifindex
));
692 if (nh
->rtnh_hops
!= 1)
693 fprintf(fp
, "(ttl>%d)", nh
->rtnh_hops
);
696 fprintf(fp
, "dev %s ", ll_index_to_name(nh
->rtnh_ifindex
));
697 if (r
->rtm_family
!= AF_MPLS
)
698 fprintf(fp
, "weight %d ",
702 print_rt_flags(fp
, nh
->rtnh_flags
);
704 len
-= NLMSG_ALIGN(nh
->rtnh_len
);
709 int print_route(struct nlmsghdr
*n
, void *arg
)
711 FILE *fp
= (FILE *)arg
;
712 struct rtmsg
*r
= NLMSG_DATA(n
);
713 int len
= n
->nlmsg_len
;
714 struct rtattr
*tb
[RTA_MAX
+1];
715 int family
, color
, host_len
;
721 if (n
->nlmsg_type
!= RTM_NEWROUTE
&& n
->nlmsg_type
!= RTM_DELROUTE
) {
722 fprintf(stderr
, "Not a route: %08x %08x %08x\n",
723 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
726 if (filter
.flushb
&& n
->nlmsg_type
!= RTM_NEWROUTE
)
728 len
-= NLMSG_LENGTH(sizeof(*r
));
730 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
734 host_len
= af_bit_len(r
->rtm_family
);
736 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
737 table
= rtm_get_table(r
, tb
);
739 if (!filter_nlmsg(n
, tb
, host_len
))
745 if (NLMSG_ALIGN(filter
.flushp
) + n
->nlmsg_len
> filter
.flushe
) {
746 ret
= flush_update();
750 fn
= (struct nlmsghdr
*)(filter
.flushb
+ NLMSG_ALIGN(filter
.flushp
));
751 memcpy(fn
, n
, n
->nlmsg_len
);
752 fn
->nlmsg_type
= RTM_DELROUTE
;
753 fn
->nlmsg_flags
= NLM_F_REQUEST
;
754 fn
->nlmsg_seq
= ++rth
.seq
;
755 filter
.flushp
= (((char *)fn
) + n
->nlmsg_len
) - filter
.flushb
;
761 open_json_object(NULL
);
762 if (n
->nlmsg_type
== RTM_DELROUTE
)
763 print_bool(PRINT_ANY
, "deleted", "Deleted ", true);
765 if ((r
->rtm_type
!= RTN_UNICAST
|| show_details
> 0) &&
766 (!filter
.typemask
|| (filter
.typemask
& (1 << r
->rtm_type
))))
767 print_string(PRINT_ANY
, "type", "%s ",
768 rtnl_rtntype_n2a(r
->rtm_type
, b1
, sizeof(b1
)));
772 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
773 color
= ifa_family_color(family
);
775 if (r
->rtm_dst_len
!= host_len
) {
776 snprintf(b1
, sizeof(b1
),
777 "%s/%u", rt_addr_n2a_rta(family
, tb
[RTA_DST
]),
780 format_host_rta_r(family
, tb
[RTA_DST
],
784 } else if (r
->rtm_dst_len
) {
785 snprintf(b1
, sizeof(b1
), "0/%d ", r
->rtm_dst_len
);
787 strncpy(b1
, "default", sizeof(b1
));
789 print_color_string(PRINT_ANY
, color
,
793 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
794 color
= ifa_family_color(family
);
796 if (r
->rtm_src_len
!= host_len
) {
797 snprintf(b1
, sizeof(b1
),
799 rt_addr_n2a_rta(family
, tb
[RTA_SRC
]),
802 format_host_rta_r(family
, tb
[RTA_SRC
],
805 print_color_string(PRINT_ANY
, color
,
806 "from", "from %s ", b1
);
807 } else if (r
->rtm_src_len
) {
808 snprintf(b1
, sizeof(b1
), "0/%u", r
->rtm_src_len
);
810 print_string(PRINT_ANY
, "src", "from %s ", b1
);
814 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
817 lwt_print_encap(fp
, tb
[RTA_ENCAP_TYPE
], tb
[RTA_ENCAP
]);
819 if (r
->rtm_tos
&& filter
.tosmask
!= -1) {
820 print_string(PRINT_ANY
, "tos", "tos %s ",
821 rtnl_dsfield_n2a(r
->rtm_tos
, b1
, sizeof(b1
)));
824 if (tb
[RTA_GATEWAY
] && filter
.rvia
.bitlen
!= host_len
)
825 print_rta_gateway(fp
, r
, tb
[RTA_GATEWAY
]);
828 print_rta_via(fp
, tb
[RTA_VIA
]);
830 if (tb
[RTA_OIF
] && filter
.oifmask
!= -1)
831 print_rta_if(fp
, tb
[RTA_OIF
], "dev");
833 if (table
&& (table
!= RT_TABLE_MAIN
|| show_details
> 0) && !filter
.tb
)
834 print_string(PRINT_ANY
,
835 "table", "table %s ",
836 rtnl_rttable_n2a(table
, b1
, sizeof(b1
)));
838 if (!(r
->rtm_flags
& RTM_F_CLONED
)) {
839 if ((r
->rtm_protocol
!= RTPROT_BOOT
|| show_details
> 0) &&
840 filter
.protocolmask
!= -1)
841 print_string(PRINT_ANY
,
842 "protocol", "proto %s ",
843 rtnl_rtprot_n2a(r
->rtm_protocol
,
846 if ((r
->rtm_scope
!= RT_SCOPE_UNIVERSE
|| show_details
> 0) &&
847 filter
.scopemask
!= -1)
848 print_string(PRINT_ANY
,
849 "scope", "scope %s ",
850 rtnl_rtscope_n2a(r
->rtm_scope
,
854 if (tb
[RTA_PREFSRC
] && filter
.rprefsrc
.bitlen
!= host_len
) {
856 = rt_addr_n2a_rta(r
->rtm_family
, tb
[RTA_PREFSRC
]);
858 /* Do not use format_host(). It is our local addr
859 and symbolic name will not be useful.
861 if (is_json_context())
862 print_string(PRINT_JSON
, "prefsrc", NULL
, psrc
);
865 print_color_string(PRINT_FP
,
866 ifa_family_color(r
->rtm_family
),
872 if (tb
[RTA_PRIORITY
] && filter
.metricmask
!= -1)
873 print_uint(PRINT_ANY
, "metric", "metric %u ",
874 rta_getattr_u32(tb
[RTA_PRIORITY
]));
876 print_rt_flags(fp
, r
->rtm_flags
);
879 unsigned int mark
= rta_getattr_u32(tb
[RTA_MARK
]);
882 if (is_json_context())
883 print_uint(PRINT_JSON
, "mark", NULL
, mark
);
885 print_0xhex(PRINT_FP
, NULL
,
886 "mark 0x%llx ", mark
);
888 print_uint(PRINT_FP
, NULL
,
893 if (tb
[RTA_FLOW
] && filter
.realmmask
!= ~0U)
894 print_rta_flow(fp
, tb
[RTA_FLOW
]);
897 print_uint(PRINT_ANY
, "uid", "uid %u ",
898 rta_getattr_u32(tb
[RTA_UID
]));
900 if (r
->rtm_family
== AF_INET
) {
901 if (r
->rtm_flags
& RTM_F_CLONED
)
902 print_cache_flags(fp
, r
->rtm_flags
);
904 if (tb
[RTA_CACHEINFO
])
905 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
906 } else if (r
->rtm_family
== AF_INET6
) {
907 if (tb
[RTA_CACHEINFO
])
908 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
912 print_rta_metrics(fp
, tb
[RTA_METRICS
]);
914 if (tb
[RTA_IIF
] && filter
.iifmask
!= -1)
915 print_rta_if(fp
, tb
[RTA_IIF
], "iif");
917 if (tb
[RTA_MULTIPATH
])
918 print_rta_multipath(fp
, r
, tb
[RTA_MULTIPATH
]);
921 print_rt_pref(fp
, rta_getattr_u8(tb
[RTA_PREF
]));
923 if (tb
[RTA_TTL_PROPAGATE
]) {
924 bool propagate
= rta_getattr_u8(tb
[RTA_TTL_PROPAGATE
]);
926 if (is_json_context())
927 print_bool(PRINT_JSON
, "ttl-propogate", NULL
,
930 print_string(PRINT_FP
, NULL
,
932 propagate
? "enabled" : "disabled");
935 print_string(PRINT_FP
, NULL
, "\n", NULL
);
941 static int parse_one_nh(struct nlmsghdr
*n
, struct rtmsg
*r
,
942 struct rtattr
*rta
, size_t len
, struct rtnexthop
*rtnh
,
943 int *argcp
, char ***argvp
)
946 char **argv
= *argvp
;
948 while (++argv
, --argc
> 0) {
949 if (strcmp(*argv
, "via") == 0) {
954 family
= read_family(*argv
);
955 if (family
== AF_UNSPEC
)
956 family
= r
->rtm_family
;
959 get_addr(&addr
, *argv
, family
);
960 if (r
->rtm_family
== AF_UNSPEC
)
961 r
->rtm_family
= addr
.family
;
962 if (addr
.family
== r
->rtm_family
) {
963 if (rta_addattr_l(rta
, len
, RTA_GATEWAY
,
964 &addr
.data
, addr
.bytelen
))
966 rtnh
->rtnh_len
+= sizeof(struct rtattr
)
969 if (rta_addattr_l(rta
, len
, RTA_VIA
,
970 &addr
.family
, addr
.bytelen
+ 2))
972 rtnh
->rtnh_len
+= RTA_SPACE(addr
.bytelen
+ 2);
974 } else if (strcmp(*argv
, "dev") == 0) {
976 rtnh
->rtnh_ifindex
= ll_name_to_index(*argv
);
977 if (!rtnh
->rtnh_ifindex
)
979 } else if (strcmp(*argv
, "weight") == 0) {
983 if (get_unsigned(&w
, *argv
, 0) || w
== 0 || w
> 256)
984 invarg("\"weight\" is invalid\n", *argv
);
985 rtnh
->rtnh_hops
= w
- 1;
986 } else if (strcmp(*argv
, "onlink") == 0) {
987 rtnh
->rtnh_flags
|= RTNH_F_ONLINK
;
988 } else if (matches(*argv
, "realms") == 0) {
992 if (get_rt_realms_or_raw(&realm
, *argv
))
993 invarg("\"realm\" value is invalid\n", *argv
);
994 if (rta_addattr32(rta
, len
, RTA_FLOW
, realm
))
996 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + 4;
997 } else if (strcmp(*argv
, "encap") == 0) {
998 int old_len
= rta
->rta_len
;
1000 if (lwt_parse_encap(rta
, len
, &argc
, &argv
,
1001 RTA_ENCAP
, RTA_ENCAP_TYPE
))
1003 rtnh
->rtnh_len
+= rta
->rta_len
- old_len
;
1004 } else if (strcmp(*argv
, "as") == 0) {
1008 if (strcmp(*argv
, "to") == 0)
1010 get_addr(&addr
, *argv
, r
->rtm_family
);
1011 if (rta_addattr_l(rta
, len
, RTA_NEWDST
,
1012 &addr
.data
, addr
.bytelen
))
1014 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + addr
.bytelen
;
1023 static int parse_nexthops(struct nlmsghdr
*n
, struct rtmsg
*r
,
1024 int argc
, char **argv
)
1027 struct rtattr
*rta
= (void *)buf
;
1028 struct rtnexthop
*rtnh
;
1030 rta
->rta_type
= RTA_MULTIPATH
;
1031 rta
->rta_len
= RTA_LENGTH(0);
1032 rtnh
= RTA_DATA(rta
);
1035 if (strcmp(*argv
, "nexthop") != 0) {
1036 fprintf(stderr
, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv
);
1040 fprintf(stderr
, "Error: unexpected end of line after \"nexthop\"\n");
1043 memset(rtnh
, 0, sizeof(*rtnh
));
1044 rtnh
->rtnh_len
= sizeof(*rtnh
);
1045 rta
->rta_len
+= rtnh
->rtnh_len
;
1046 if (parse_one_nh(n
, r
, rta
, 4096, rtnh
, &argc
, &argv
)) {
1047 fprintf(stderr
, "Error: cannot parse nexthop\n");
1050 rtnh
= RTNH_NEXT(rtnh
);
1053 if (rta
->rta_len
> RTA_LENGTH(0))
1054 return addattr_l(n
, 4096, RTA_MULTIPATH
,
1055 RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1059 static int iproute_modify(int cmd
, unsigned int flags
, int argc
, char **argv
)
1066 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1067 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
1068 .n
.nlmsg_type
= cmd
,
1069 .r
.rtm_family
= preferred_family
,
1070 .r
.rtm_table
= RT_TABLE_MAIN
,
1071 .r
.rtm_scope
= RT_SCOPE_NOWHERE
,
1074 struct rtattr
*mxrta
= (void *)mxbuf
;
1075 unsigned int mxlock
= 0;
1085 if (cmd
!= RTM_DELROUTE
) {
1086 req
.r
.rtm_protocol
= RTPROT_BOOT
;
1087 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1088 req
.r
.rtm_type
= RTN_UNICAST
;
1091 mxrta
->rta_type
= RTA_METRICS
;
1092 mxrta
->rta_len
= RTA_LENGTH(0);
1095 if (strcmp(*argv
, "src") == 0) {
1099 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1100 if (req
.r
.rtm_family
== AF_UNSPEC
)
1101 req
.r
.rtm_family
= addr
.family
;
1102 addattr_l(&req
.n
, sizeof(req
),
1103 RTA_PREFSRC
, &addr
.data
, addr
.bytelen
);
1104 } else if (strcmp(*argv
, "as") == 0) {
1108 if (strcmp(*argv
, "to") == 0) {
1111 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1112 if (req
.r
.rtm_family
== AF_UNSPEC
)
1113 req
.r
.rtm_family
= addr
.family
;
1114 addattr_l(&req
.n
, sizeof(req
),
1115 RTA_NEWDST
, &addr
.data
, addr
.bytelen
);
1116 } else if (strcmp(*argv
, "via") == 0) {
1121 invarg("use nexthop syntax to specify multiple via\n",
1126 family
= read_family(*argv
);
1127 if (family
== AF_UNSPEC
)
1128 family
= req
.r
.rtm_family
;
1131 get_addr(&addr
, *argv
, family
);
1132 if (req
.r
.rtm_family
== AF_UNSPEC
)
1133 req
.r
.rtm_family
= addr
.family
;
1134 if (addr
.family
== req
.r
.rtm_family
)
1135 addattr_l(&req
.n
, sizeof(req
), RTA_GATEWAY
,
1136 &addr
.data
, addr
.bytelen
);
1138 addattr_l(&req
.n
, sizeof(req
), RTA_VIA
,
1139 &addr
.family
, addr
.bytelen
+2);
1140 } else if (strcmp(*argv
, "from") == 0) {
1144 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1145 if (req
.r
.rtm_family
== AF_UNSPEC
)
1146 req
.r
.rtm_family
= addr
.family
;
1148 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
, &addr
.data
, addr
.bytelen
);
1149 req
.r
.rtm_src_len
= addr
.bitlen
;
1150 } else if (strcmp(*argv
, "tos") == 0 ||
1151 matches(*argv
, "dsfield") == 0) {
1155 if (rtnl_dsfield_a2n(&tos
, *argv
))
1156 invarg("\"tos\" value is invalid\n", *argv
);
1157 req
.r
.rtm_tos
= tos
;
1158 } else if (strcmp(*argv
, "expires") == 0) {
1162 if (get_u32(&expires
, *argv
, 0))
1163 invarg("\"expires\" value is invalid\n", *argv
);
1164 addattr32(&req
.n
, sizeof(req
), RTA_EXPIRES
, expires
);
1165 } else if (matches(*argv
, "metric") == 0 ||
1166 matches(*argv
, "priority") == 0 ||
1167 strcmp(*argv
, "preference") == 0) {
1171 if (get_u32(&metric
, *argv
, 0))
1172 invarg("\"metric\" value is invalid\n", *argv
);
1173 addattr32(&req
.n
, sizeof(req
), RTA_PRIORITY
, metric
);
1174 } else if (strcmp(*argv
, "scope") == 0) {
1178 if (rtnl_rtscope_a2n(&scope
, *argv
))
1179 invarg("invalid \"scope\" value\n", *argv
);
1180 req
.r
.rtm_scope
= scope
;
1182 } else if (strcmp(*argv
, "mtu") == 0) {
1186 if (strcmp(*argv
, "lock") == 0) {
1187 mxlock
|= (1<<RTAX_MTU
);
1190 if (get_unsigned(&mtu
, *argv
, 0))
1191 invarg("\"mtu\" value is invalid\n", *argv
);
1192 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_MTU
, mtu
);
1193 } else if (strcmp(*argv
, "hoplimit") == 0) {
1194 unsigned int hoplimit
;
1197 if (strcmp(*argv
, "lock") == 0) {
1198 mxlock
|= (1<<RTAX_HOPLIMIT
);
1201 if (get_unsigned(&hoplimit
, *argv
, 0) || hoplimit
> 255)
1202 invarg("\"hoplimit\" value is invalid\n", *argv
);
1203 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_HOPLIMIT
, hoplimit
);
1204 } else if (strcmp(*argv
, "advmss") == 0) {
1208 if (strcmp(*argv
, "lock") == 0) {
1209 mxlock
|= (1<<RTAX_ADVMSS
);
1212 if (get_unsigned(&mss
, *argv
, 0))
1213 invarg("\"mss\" value is invalid\n", *argv
);
1214 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_ADVMSS
, mss
);
1215 } else if (matches(*argv
, "reordering") == 0) {
1219 if (strcmp(*argv
, "lock") == 0) {
1220 mxlock
|= (1<<RTAX_REORDERING
);
1223 if (get_unsigned(&reord
, *argv
, 0))
1224 invarg("\"reordering\" value is invalid\n", *argv
);
1225 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_REORDERING
, reord
);
1226 } else if (strcmp(*argv
, "rtt") == 0) {
1230 if (strcmp(*argv
, "lock") == 0) {
1231 mxlock
|= (1<<RTAX_RTT
);
1234 if (get_time_rtt(&rtt
, *argv
, &raw
))
1235 invarg("\"rtt\" value is invalid\n", *argv
);
1236 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTT
,
1237 (raw
) ? rtt
: rtt
* 8);
1238 } else if (strcmp(*argv
, "rto_min") == 0) {
1239 unsigned int rto_min
;
1242 mxlock
|= (1<<RTAX_RTO_MIN
);
1243 if (get_time_rtt(&rto_min
, *argv
, &raw
))
1244 invarg("\"rto_min\" value is invalid\n",
1246 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTO_MIN
,
1248 } else if (matches(*argv
, "window") == 0) {
1252 if (strcmp(*argv
, "lock") == 0) {
1253 mxlock
|= (1<<RTAX_WINDOW
);
1256 if (get_unsigned(&win
, *argv
, 0))
1257 invarg("\"window\" value is invalid\n", *argv
);
1258 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_WINDOW
, win
);
1259 } else if (matches(*argv
, "cwnd") == 0) {
1263 if (strcmp(*argv
, "lock") == 0) {
1264 mxlock
|= (1<<RTAX_CWND
);
1267 if (get_unsigned(&win
, *argv
, 0))
1268 invarg("\"cwnd\" value is invalid\n", *argv
);
1269 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_CWND
, win
);
1270 } else if (matches(*argv
, "initcwnd") == 0) {
1274 if (strcmp(*argv
, "lock") == 0) {
1275 mxlock
|= (1<<RTAX_INITCWND
);
1278 if (get_unsigned(&win
, *argv
, 0))
1279 invarg("\"initcwnd\" value is invalid\n", *argv
);
1280 rta_addattr32(mxrta
, sizeof(mxbuf
),
1281 RTAX_INITCWND
, win
);
1282 } else if (matches(*argv
, "initrwnd") == 0) {
1286 if (strcmp(*argv
, "lock") == 0) {
1287 mxlock
|= (1<<RTAX_INITRWND
);
1290 if (get_unsigned(&win
, *argv
, 0))
1291 invarg("\"initrwnd\" value is invalid\n", *argv
);
1292 rta_addattr32(mxrta
, sizeof(mxbuf
),
1293 RTAX_INITRWND
, win
);
1294 } else if (matches(*argv
, "features") == 0) {
1295 unsigned int features
= 0;
1300 if (strcmp(*argv
, "ecn") == 0)
1301 features
|= RTAX_FEATURE_ECN
;
1303 invarg("\"features\" value not valid\n", *argv
);
1307 rta_addattr32(mxrta
, sizeof(mxbuf
),
1308 RTAX_FEATURES
, features
);
1309 } else if (matches(*argv
, "quickack") == 0) {
1310 unsigned int quickack
;
1313 if (get_unsigned(&quickack
, *argv
, 0))
1314 invarg("\"quickack\" value is invalid\n", *argv
);
1315 if (quickack
!= 1 && quickack
!= 0)
1316 invarg("\"quickack\" value should be 0 or 1\n", *argv
);
1317 rta_addattr32(mxrta
, sizeof(mxbuf
),
1318 RTAX_QUICKACK
, quickack
);
1319 } else if (matches(*argv
, "congctl") == 0) {
1321 if (strcmp(*argv
, "lock") == 0) {
1322 mxlock
|= 1 << RTAX_CC_ALGO
;
1325 rta_addattr_l(mxrta
, sizeof(mxbuf
), RTAX_CC_ALGO
, *argv
,
1327 } else if (matches(*argv
, "rttvar") == 0) {
1331 if (strcmp(*argv
, "lock") == 0) {
1332 mxlock
|= (1<<RTAX_RTTVAR
);
1335 if (get_time_rtt(&win
, *argv
, &raw
))
1336 invarg("\"rttvar\" value is invalid\n", *argv
);
1337 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTTVAR
,
1338 (raw
) ? win
: win
* 4);
1339 } else if (matches(*argv
, "ssthresh") == 0) {
1343 if (strcmp(*argv
, "lock") == 0) {
1344 mxlock
|= (1<<RTAX_SSTHRESH
);
1347 if (get_unsigned(&win
, *argv
, 0))
1348 invarg("\"ssthresh\" value is invalid\n", *argv
);
1349 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_SSTHRESH
, win
);
1350 } else if (matches(*argv
, "realms") == 0) {
1354 if (get_rt_realms_or_raw(&realm
, *argv
))
1355 invarg("\"realm\" value is invalid\n", *argv
);
1356 addattr32(&req
.n
, sizeof(req
), RTA_FLOW
, realm
);
1357 } else if (strcmp(*argv
, "onlink") == 0) {
1358 req
.r
.rtm_flags
|= RTNH_F_ONLINK
;
1359 } else if (strcmp(*argv
, "nexthop") == 0) {
1362 } else if (matches(*argv
, "protocol") == 0) {
1366 if (rtnl_rtprot_a2n(&prot
, *argv
))
1367 invarg("\"protocol\" value is invalid\n", *argv
);
1368 req
.r
.rtm_protocol
= prot
;
1369 } else if (matches(*argv
, "table") == 0) {
1373 if (rtnl_rttable_a2n(&tid
, *argv
))
1374 invarg("\"table\" value is invalid\n", *argv
);
1376 req
.r
.rtm_table
= tid
;
1378 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1379 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1382 } else if (matches(*argv
, "vrf") == 0) {
1386 tid
= ipvrf_get_table(*argv
);
1388 invarg("Invalid VRF\n", *argv
);
1390 req
.r
.rtm_table
= tid
;
1392 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1393 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1396 } else if (strcmp(*argv
, "dev") == 0 ||
1397 strcmp(*argv
, "oif") == 0) {
1400 } else if (matches(*argv
, "pref") == 0) {
1404 if (strcmp(*argv
, "low") == 0)
1405 pref
= ICMPV6_ROUTER_PREF_LOW
;
1406 else if (strcmp(*argv
, "medium") == 0)
1407 pref
= ICMPV6_ROUTER_PREF_MEDIUM
;
1408 else if (strcmp(*argv
, "high") == 0)
1409 pref
= ICMPV6_ROUTER_PREF_HIGH
;
1410 else if (get_u8(&pref
, *argv
, 0))
1411 invarg("\"pref\" value is invalid\n", *argv
);
1412 addattr8(&req
.n
, sizeof(req
), RTA_PREF
, pref
);
1413 } else if (strcmp(*argv
, "encap") == 0) {
1415 struct rtattr
*rta
= (void *)buf
;
1417 rta
->rta_type
= RTA_ENCAP
;
1418 rta
->rta_len
= RTA_LENGTH(0);
1420 lwt_parse_encap(rta
, sizeof(buf
), &argc
, &argv
,
1421 RTA_ENCAP
, RTA_ENCAP_TYPE
);
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 iproute_flush_cache(void)
1540 #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1543 int flush_fd
= open(ROUTE_FLUSH_PATH
, O_WRONLY
);
1544 char *buffer
= "-1";
1547 fprintf(stderr
, "Cannot open \"%s\": %s\n",
1548 ROUTE_FLUSH_PATH
, strerror(errno
));
1552 len
= strlen(buffer
);
1554 if ((write(flush_fd
, (void *)buffer
, len
)) < len
) {
1555 fprintf(stderr
, "Cannot flush routing cache\n");
1563 static __u32 route_dump_magic
= 0x45311224;
1565 static int save_route(struct nlmsghdr
*n
, void *arg
)
1568 int len
= n
->nlmsg_len
;
1569 struct rtmsg
*r
= NLMSG_DATA(n
);
1570 struct rtattr
*tb
[RTA_MAX
+1];
1573 host_len
= af_bit_len(r
->rtm_family
);
1574 len
-= NLMSG_LENGTH(sizeof(*r
));
1575 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
1577 if (!filter_nlmsg(n
, tb
, host_len
))
1580 ret
= write(STDOUT_FILENO
, n
, n
->nlmsg_len
);
1581 if ((ret
> 0) && (ret
!= n
->nlmsg_len
)) {
1582 fprintf(stderr
, "Short write while saving nlmsg\n");
1586 return ret
== n
->nlmsg_len
? 0 : ret
;
1589 static int save_route_prep(void)
1593 if (isatty(STDOUT_FILENO
)) {
1594 fprintf(stderr
, "Not sending a binary stream to stdout\n");
1598 ret
= write(STDOUT_FILENO
, &route_dump_magic
, sizeof(route_dump_magic
));
1599 if (ret
!= sizeof(route_dump_magic
)) {
1600 fprintf(stderr
, "Can't write magic to dump file\n");
1607 static int iproute_flush(int family
, rtnl_filter_t filter_fn
)
1609 time_t start
= time(0);
1610 char flushb
[4096-512];
1614 if (filter
.cloned
) {
1615 if (family
!= AF_INET6
) {
1616 iproute_flush_cache();
1618 printf("*** IPv4 routing cache is flushed.\n");
1620 if (family
== AF_INET
)
1624 filter
.flushb
= flushb
;
1626 filter
.flushe
= sizeof(flushb
);
1629 if (rtnl_routedump_req(&rth
, family
, NULL
) < 0) {
1630 perror("Cannot send dump request");
1634 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1635 fprintf(stderr
, "Flush terminated\n");
1638 if (filter
.flushed
== 0) {
1641 (!filter
.cloned
|| family
== AF_INET6
))
1642 printf("Nothing to flush.\n");
1644 printf("*** Flush is complete after %d round%s ***\n",
1645 round
, round
> 1 ? "s" : "");
1651 ret
= flush_update();
1655 if (time(0) - start
> 30) {
1656 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1657 (long)(time(0) - start
), filter
.flushed
);
1662 printf("\n*** Round %d, deleting %d entries ***\n",
1663 round
, filter
.flushed
);
1669 static int iproute_dump_filter(struct nlmsghdr
*nlh
, int reqlen
)
1671 struct rtmsg
*rtm
= NLMSG_DATA(nlh
);
1674 rtm
->rtm_protocol
= filter
.protocol
;
1676 rtm
->rtm_flags
|= RTM_F_CLONED
;
1679 err
= addattr32(nlh
, reqlen
, RTA_TABLE
, filter
.tb
);
1685 err
= addattr32(nlh
, reqlen
, RTA_OIF
, filter
.oif
);
1693 static int iproute_list_flush_or_save(int argc
, char **argv
, int action
)
1695 int dump_family
= preferred_family
;
1698 unsigned int mark
= 0;
1699 rtnl_filter_t filter_fn
;
1701 if (action
== IPROUTE_SAVE
) {
1702 if (save_route_prep())
1705 filter_fn
= save_route
;
1707 filter_fn
= print_route
;
1709 iproute_reset_filter(0);
1710 filter
.tb
= RT_TABLE_MAIN
;
1712 if ((action
== IPROUTE_FLUSH
) && argc
<= 0) {
1713 fprintf(stderr
, "\"ip route flush\" requires arguments.\n");
1718 if (matches(*argv
, "table") == 0) {
1722 if (rtnl_rttable_a2n(&tid
, *argv
)) {
1723 if (strcmp(*argv
, "all") == 0) {
1725 } else if (strcmp(*argv
, "cache") == 0) {
1727 } else if (strcmp(*argv
, "help") == 0) {
1730 invarg("table id value is invalid\n", *argv
);
1734 } else if (matches(*argv
, "vrf") == 0) {
1738 tid
= ipvrf_get_table(*argv
);
1740 invarg("Invalid VRF\n", *argv
);
1742 filter
.typemask
= ~(1 << RTN_LOCAL
| 1<<RTN_BROADCAST
);
1743 } else if (matches(*argv
, "cached") == 0 ||
1744 matches(*argv
, "cloned") == 0) {
1746 } else if (strcmp(*argv
, "tos") == 0 ||
1747 matches(*argv
, "dsfield") == 0) {
1751 if (rtnl_dsfield_a2n(&tos
, *argv
))
1752 invarg("TOS value is invalid\n", *argv
);
1754 filter
.tosmask
= -1;
1755 } else if (matches(*argv
, "protocol") == 0) {
1759 filter
.protocolmask
= -1;
1760 if (rtnl_rtprot_a2n(&prot
, *argv
)) {
1761 if (strcmp(*argv
, "all") != 0)
1762 invarg("invalid \"protocol\"\n", *argv
);
1764 filter
.protocolmask
= 0;
1766 filter
.protocol
= prot
;
1767 } else if (matches(*argv
, "scope") == 0) {
1771 filter
.scopemask
= -1;
1772 if (rtnl_rtscope_a2n(&scope
, *argv
)) {
1773 if (strcmp(*argv
, "all") != 0)
1774 invarg("invalid \"scope\"\n", *argv
);
1775 scope
= RT_SCOPE_NOWHERE
;
1776 filter
.scopemask
= 0;
1778 filter
.scope
= scope
;
1779 } else if (matches(*argv
, "type") == 0) {
1783 if (rtnl_rtntype_a2n(&type
, *argv
))
1784 invarg("node type value is invalid\n", *argv
);
1785 filter
.typemask
= (1<<type
);
1786 } else if (strcmp(*argv
, "dev") == 0 ||
1787 strcmp(*argv
, "oif") == 0) {
1790 } else if (strcmp(*argv
, "iif") == 0) {
1793 } else if (strcmp(*argv
, "mark") == 0) {
1795 if (get_unsigned(&mark
, *argv
, 0))
1796 invarg("invalid mark value", *argv
);
1797 filter
.markmask
= -1;
1798 } else if (matches(*argv
, "metric") == 0 ||
1799 matches(*argv
, "priority") == 0 ||
1800 strcmp(*argv
, "preference") == 0) {
1804 if (get_u32(&metric
, *argv
, 0))
1805 invarg("\"metric\" value is invalid\n", *argv
);
1806 filter
.metric
= metric
;
1807 filter
.metricmask
= -1;
1808 } else if (strcmp(*argv
, "via") == 0) {
1812 family
= read_family(*argv
);
1813 if (family
== AF_UNSPEC
)
1814 family
= dump_family
;
1817 get_prefix(&filter
.rvia
, *argv
, family
);
1818 } else if (strcmp(*argv
, "src") == 0) {
1820 get_prefix(&filter
.rprefsrc
, *argv
, dump_family
);
1821 } else if (matches(*argv
, "realms") == 0) {
1825 if (get_rt_realms_or_raw(&realm
, *argv
))
1826 invarg("invalid realms\n", *argv
);
1827 filter
.realm
= realm
;
1828 filter
.realmmask
= ~0U;
1829 if ((filter
.realm
&0xFFFF) == 0 &&
1830 (*argv
)[strlen(*argv
) - 1] == '/')
1831 filter
.realmmask
&= ~0xFFFF;
1832 if ((filter
.realm
&0xFFFF0000U
) == 0 &&
1833 (strchr(*argv
, '/') == NULL
||
1835 filter
.realmmask
&= ~0xFFFF0000U
;
1836 } else if (matches(*argv
, "from") == 0) {
1838 if (matches(*argv
, "root") == 0) {
1840 get_prefix(&filter
.rsrc
, *argv
, dump_family
);
1841 } else if (matches(*argv
, "match") == 0) {
1843 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1845 if (matches(*argv
, "exact") == 0) {
1848 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1849 filter
.rsrc
= filter
.msrc
;
1852 if (matches(*argv
, "to") == 0) {
1855 if (matches(*argv
, "root") == 0) {
1857 get_prefix(&filter
.rdst
, *argv
, dump_family
);
1858 } else if (matches(*argv
, "match") == 0) {
1860 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1862 if (matches(*argv
, "exact") == 0) {
1865 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1866 filter
.rdst
= filter
.mdst
;
1872 if (dump_family
== AF_UNSPEC
&& filter
.tb
)
1873 dump_family
= AF_INET
;
1879 idx
= ll_name_to_index(id
);
1883 filter
.iifmask
= -1;
1886 idx
= ll_name_to_index(od
);
1890 filter
.oifmask
= -1;
1895 if (action
== IPROUTE_FLUSH
)
1896 return iproute_flush(dump_family
, filter_fn
);
1898 if (rtnl_routedump_req(&rth
, dump_family
, iproute_dump_filter
) < 0) {
1899 perror("Cannot send dump request");
1905 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1906 fprintf(stderr
, "Dump terminated\n");
1916 static int iproute_get(int argc
, char **argv
)
1923 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1924 .n
.nlmsg_flags
= NLM_F_REQUEST
,
1925 .n
.nlmsg_type
= RTM_GETROUTE
,
1926 .r
.rtm_family
= preferred_family
,
1930 struct nlmsghdr
*answer
;
1934 unsigned int mark
= 0;
1935 bool address_found
= false;
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
;
2041 address_found
= true;
2046 if (!address_found
) {
2047 fprintf(stderr
, "need at least a destination address\n");
2055 idx
= ll_name_to_index(idev
);
2058 addattr32(&req
.n
, sizeof(req
), RTA_IIF
, idx
);
2061 idx
= ll_name_to_index(odev
);
2064 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
2068 addattr32(&req
.n
, sizeof(req
), RTA_MARK
, mark
);
2070 if (req
.r
.rtm_family
== AF_UNSPEC
)
2071 req
.r
.rtm_family
= AF_INET
;
2073 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2074 if (req
.r
.rtm_family
== AF_INET
)
2075 req
.r
.rtm_flags
|= RTM_F_LOOKUP_TABLE
;
2077 req
.r
.rtm_flags
|= RTM_F_FIB_MATCH
;
2079 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2084 if (connected
&& !from_ok
) {
2085 struct rtmsg
*r
= NLMSG_DATA(answer
);
2086 int len
= answer
->nlmsg_len
;
2087 struct rtattr
*tb
[RTA_MAX
+1];
2089 if (print_route(answer
, (void *)stdout
) < 0) {
2090 fprintf(stderr
, "An error :-)\n");
2095 if (answer
->nlmsg_type
!= RTM_NEWROUTE
) {
2096 fprintf(stderr
, "Not a route?\n");
2100 len
-= NLMSG_LENGTH(sizeof(*r
));
2102 fprintf(stderr
, "Wrong len %d\n", len
);
2107 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2109 if (tb
[RTA_PREFSRC
]) {
2110 tb
[RTA_PREFSRC
]->rta_type
= RTA_SRC
;
2111 r
->rtm_src_len
= 8*RTA_PAYLOAD(tb
[RTA_PREFSRC
]);
2112 } else if (!tb
[RTA_SRC
]) {
2113 fprintf(stderr
, "Failed to connect the route\n");
2117 if (!odev
&& tb
[RTA_OIF
])
2118 tb
[RTA_OIF
]->rta_type
= 0;
2119 if (tb
[RTA_GATEWAY
])
2120 tb
[RTA_GATEWAY
]->rta_type
= 0;
2122 tb
[RTA_VIA
]->rta_type
= 0;
2123 if (!idev
&& tb
[RTA_IIF
])
2124 tb
[RTA_IIF
]->rta_type
= 0;
2125 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
2126 req
.n
.nlmsg_type
= RTM_GETROUTE
;
2130 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2134 if (print_route(answer
, (void *)stdout
) < 0) {
2135 fprintf(stderr
, "An error :-)\n");
2145 static int rtattr_cmp(const struct rtattr
*rta1
, const struct rtattr
*rta2
)
2147 if (!rta1
|| !rta2
|| rta1
->rta_len
!= rta2
->rta_len
)
2150 return memcmp(RTA_DATA(rta1
), RTA_DATA(rta2
), RTA_PAYLOAD(rta1
));
2153 static int restore_handler(struct rtnl_ctrl_data
*ctrl
,
2154 struct nlmsghdr
*n
, void *arg
)
2156 struct rtmsg
*r
= NLMSG_DATA(n
);
2157 struct rtattr
*tb
[RTA_MAX
+1];
2158 int len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
));
2159 int ret
, prio
= *(int *)arg
;
2161 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2163 /* Restore routes in correct order:
2164 * 0. ones for local addresses,
2165 * 1. ones for local networks,
2166 * 2. others (remote networks/hosts).
2168 if (!prio
&& !tb
[RTA_GATEWAY
] && (!tb
[RTA_PREFSRC
] ||
2169 !rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
])))
2171 else if (prio
== 1 && !tb
[RTA_GATEWAY
] && tb
[RTA_PREFSRC
] &&
2172 rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
]))
2174 else if (prio
== 2 && tb
[RTA_GATEWAY
])
2180 n
->nlmsg_flags
|= NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_ACK
;
2184 ret
= rtnl_talk(&rth
, n
, NULL
);
2185 if ((ret
< 0) && (errno
== EEXIST
))
2191 static int route_dump_check_magic(void)
2196 if (isatty(STDIN_FILENO
)) {
2197 fprintf(stderr
, "Can't restore route dump from a terminal\n");
2201 ret
= fread(&magic
, sizeof(magic
), 1, stdin
);
2202 if (magic
!= route_dump_magic
) {
2203 fprintf(stderr
, "Magic mismatch (%d elems, %x magic)\n", ret
, magic
);
2210 static int iproute_restore(void)
2214 if (route_dump_check_magic())
2219 perror("Failed to restore: ftell");
2223 for (prio
= 0; prio
< 3; prio
++) {
2226 err
= rtnl_from_file(stdin
, &restore_handler
, &prio
);
2230 if (fseek(stdin
, pos
, SEEK_SET
) == -1) {
2231 perror("Failed to restore: fseek");
2239 static int show_handler(struct rtnl_ctrl_data
*ctrl
,
2240 struct nlmsghdr
*n
, void *arg
)
2242 print_route(n
, stdout
);
2246 static int iproute_showdump(void)
2248 if (route_dump_check_magic())
2251 if (rtnl_from_file(stdin
, &show_handler
, NULL
))
2257 void iproute_reset_filter(int ifindex
)
2259 memset(&filter
, 0, sizeof(filter
));
2260 filter
.mdst
.bitlen
= -1;
2261 filter
.msrc
.bitlen
= -1;
2262 filter
.oif
= ifindex
;
2264 filter
.oifmask
= -1;
2267 int do_iproute(int argc
, char **argv
)
2270 return iproute_list_flush_or_save(0, NULL
, IPROUTE_LIST
);
2272 if (matches(*argv
, "add") == 0)
2273 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_EXCL
,
2275 if (matches(*argv
, "change") == 0 || strcmp(*argv
, "chg") == 0)
2276 return iproute_modify(RTM_NEWROUTE
, NLM_F_REPLACE
,
2278 if (matches(*argv
, "replace") == 0)
2279 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_REPLACE
,
2281 if (matches(*argv
, "prepend") == 0)
2282 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
,
2284 if (matches(*argv
, "append") == 0)
2285 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_APPEND
,
2287 if (matches(*argv
, "test") == 0)
2288 return iproute_modify(RTM_NEWROUTE
, NLM_F_EXCL
,
2290 if (matches(*argv
, "delete") == 0)
2291 return iproute_modify(RTM_DELROUTE
, 0,
2293 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
2294 || matches(*argv
, "lst") == 0)
2295 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_LIST
);
2296 if (matches(*argv
, "get") == 0)
2297 return iproute_get(argc
-1, argv
+1);
2298 if (matches(*argv
, "flush") == 0)
2299 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_FLUSH
);
2300 if (matches(*argv
, "save") == 0)
2301 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_SAVE
);
2302 if (matches(*argv
, "restore") == 0)
2303 return iproute_restore();
2304 if (matches(*argv
, "showdump") == 0)
2305 return iproute_showdump();
2306 if (matches(*argv
, "help") == 0)
2310 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv
);