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 | nhid ID } 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 | rpl ]\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 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");
371 if (flags
& RTM_F_OFFLOAD
)
372 print_string(PRINT_ANY
, NULL
, "%s ", "rt_offload");
373 if (flags
& RTM_F_TRAP
)
374 print_string(PRINT_ANY
, NULL
, "%s ", "rt_trap");
376 close_json_array(PRINT_JSON
, NULL
);
379 static void print_rt_pref(FILE *fp
, unsigned int pref
)
383 case ICMPV6_ROUTER_PREF_LOW
:
384 print_string(PRINT_ANY
,
385 "pref", "pref %s", "low");
387 case ICMPV6_ROUTER_PREF_MEDIUM
:
388 print_string(PRINT_ANY
,
389 "pref", "pref %s", "medium");
391 case ICMPV6_ROUTER_PREF_HIGH
:
392 print_string(PRINT_ANY
,
393 "pref", "pref %s", "high");
396 print_uint(PRINT_ANY
,
401 void print_rta_if(FILE *fp
, const struct rtattr
*rta
, const char *prefix
)
403 const char *ifname
= ll_index_to_name(rta_getattr_u32(rta
));
405 if (is_json_context())
406 print_string(PRINT_JSON
, prefix
, NULL
, ifname
);
408 fprintf(fp
, "%s ", prefix
);
409 color_fprintf(fp
, COLOR_IFNAME
, "%s ", ifname
);
413 static void print_cache_flags(FILE *fp
, __u32 flags
)
415 json_writer_t
*jw
= get_json_writer();
419 jsonw_name(jw
, "cache");
420 jsonw_start_array(jw
);
422 fprintf(fp
, "%s cache ", _SL_
);
428 #define PRTFL(fl, flname) \
429 if (flags & RTCF_##fl) { \
430 flags &= ~RTCF_##fl; \
432 jsonw_string(jw, flname); \
434 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
437 PRTFL(LOCAL
, "local");
438 PRTFL(REJECT
, "reject");
439 PRTFL(MULTICAST
, "mc");
440 PRTFL(BROADCAST
, "brd");
441 PRTFL(DNAT
, "dst-nat");
442 PRTFL(SNAT
, "src-nat");
444 PRTFL(DIRECTDST
, "dst-direct");
445 PRTFL(DIRECTSRC
, "src-direct");
446 PRTFL(REDIRECTED
, "redirected");
447 PRTFL(DOREDIRECT
, "redirect");
448 PRTFL(FAST
, "fastroute");
449 PRTFL(NOTIFY
, "notify");
450 PRTFL(TPROXY
, "proxy");
454 print_hex(PRINT_ANY
, "flags", "%x>", flags
);
460 static void print_rta_cacheinfo(FILE *fp
, const struct rta_cacheinfo
*ci
)
467 if (ci
->rta_expires
!= 0)
468 print_int(PRINT_ANY
, "expires",
469 "expires %dsec ", ci
->rta_expires
/hz
);
470 if (ci
->rta_error
!= 0)
471 print_uint(PRINT_ANY
, "error",
472 "error %u ", ci
->rta_error
);
476 print_uint(PRINT_ANY
, "users",
477 "users %u ", ci
->rta_clntref
);
478 if (ci
->rta_used
!= 0)
479 print_uint(PRINT_ANY
, "used",
480 "used %u ", ci
->rta_used
);
481 if (ci
->rta_lastuse
!= 0)
482 print_uint(PRINT_ANY
, "age",
483 "age %usec ", ci
->rta_lastuse
/hz
);
486 print_0xhex(PRINT_ANY
, "ipid",
487 "ipid 0x%04llx ", ci
->rta_id
);
488 if (ci
->rta_ts
|| ci
->rta_tsage
) {
489 print_0xhex(PRINT_ANY
, "ts",
490 "ts 0x%llx", ci
->rta_ts
);
491 print_uint(PRINT_ANY
, "tsage",
492 "tsage %usec ", ci
->rta_tsage
);
496 static void print_rta_flow(FILE *fp
, const struct rtattr
*rta
)
498 __u32 to
= rta_getattr_u32(rta
);
499 __u32 from
= to
>> 16;
503 if (is_json_context()) {
504 open_json_object("flow");
507 print_string(PRINT_JSON
, "from", NULL
,
508 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
509 print_string(PRINT_JSON
, "to", NULL
,
510 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
513 fprintf(fp
, "realm%s ", from
? "s" : "");
516 print_string(PRINT_FP
, NULL
, "%s/",
517 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
518 print_string(PRINT_FP
, NULL
, "%s ",
519 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
523 static void print_rta_newdst(FILE *fp
, const struct rtmsg
*r
,
524 const struct rtattr
*rta
)
526 const char *newdst
= format_host_rta(r
->rtm_family
, rta
);
528 if (is_json_context())
529 print_string(PRINT_JSON
, "to", NULL
, newdst
);
531 fprintf(fp
, "as to ");
532 print_color_string(PRINT_FP
,
533 ifa_family_color(r
->rtm_family
),
534 NULL
, "%s ", newdst
);
538 void print_rta_gateway(FILE *fp
, unsigned char family
, const struct rtattr
*rta
)
540 const char *gateway
= format_host_rta(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(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");
583 open_json_object(NULL
);
585 parse_rtattr(mxrta
, RTAX_MAX
, RTA_DATA(rta
), RTA_PAYLOAD(rta
));
587 if (mxrta
[RTAX_LOCK
])
588 mxlock
= rta_getattr_u32(mxrta
[RTAX_LOCK
]);
590 for (i
= 2; i
<= RTAX_MAX
; i
++) {
593 if (mxrta
[i
] == NULL
&& !(mxlock
& (1 << i
)))
596 if (mxrta
[i
] != NULL
&& i
!= RTAX_CC_ALGO
)
597 val
= rta_getattr_u32(mxrta
[i
]);
599 if (i
== RTAX_HOPLIMIT
&& (int)val
== -1)
602 if (!is_json_context()) {
603 if (i
< sizeof(mx_names
)/sizeof(char *) && mx_names
[i
])
604 fprintf(fp
, "%s ", mx_names
[i
]);
606 fprintf(fp
, "metric %d ", i
);
609 fprintf(fp
, "lock ");
614 print_rtax_features(fp
, val
);
617 print_uint(PRINT_ANY
, mx_names
[i
], "%u ", val
);
625 else if (i
== RTAX_RTTVAR
)
628 if (is_json_context())
629 print_uint(PRINT_JSON
, mx_names
[i
],
633 fprintf(fp
, "%gs ", val
/1e3
);
635 fprintf(fp
, "%ums ", val
);
639 print_string(PRINT_ANY
, "congestion",
640 "%s ", rta_getattr_str(mxrta
[i
]));
646 close_json_array(PRINT_JSON
, NULL
);
649 static void print_rta_multipath(FILE *fp
, const struct rtmsg
*r
,
652 const struct rtnexthop
*nh
= RTA_DATA(rta
);
653 int len
= RTA_PAYLOAD(rta
);
656 open_json_array(PRINT_JSON
, "nexthops");
658 while (len
>= sizeof(*nh
)) {
659 struct rtattr
*tb
[RTA_MAX
+ 1];
661 if (nh
->rtnh_len
> len
)
664 open_json_object(NULL
);
666 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
667 r
->rtm_type
== RTN_MULTICAST
) {
669 print_string(PRINT_FP
, NULL
, "Oifs: ", NULL
);
672 print_string(PRINT_FP
, NULL
, " ", NULL
);
675 print_string(PRINT_FP
, NULL
, "%s\tnexthop ", _SL_
);
677 if (nh
->rtnh_len
> sizeof(*nh
)) {
678 parse_rtattr(tb
, RTA_MAX
, RTNH_DATA(nh
),
679 nh
->rtnh_len
- sizeof(*nh
));
686 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
688 print_rta_gateway(fp
, r
->rtm_family
,
691 print_rta_via(fp
, tb
[RTA_VIA
]);
693 print_rta_flow(fp
, tb
[RTA_FLOW
]);
696 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
697 r
->rtm_type
== RTN_MULTICAST
) {
698 print_string(PRINT_ANY
, "dev",
699 "%s", ll_index_to_name(nh
->rtnh_ifindex
));
701 if (nh
->rtnh_hops
!= 1)
702 print_int(PRINT_ANY
, "ttl", "(ttl>%d)", nh
->rtnh_hops
);
704 print_string(PRINT_FP
, NULL
, " ", NULL
);
706 print_string(PRINT_ANY
, "dev",
707 "dev %s ", ll_index_to_name(nh
->rtnh_ifindex
));
709 if (r
->rtm_family
!= AF_MPLS
)
710 print_int(PRINT_ANY
, "weight",
711 "weight %d ", nh
->rtnh_hops
+ 1);
714 print_rt_flags(fp
, nh
->rtnh_flags
);
716 len
-= NLMSG_ALIGN(nh
->rtnh_len
);
721 close_json_array(PRINT_JSON
, NULL
);
724 int print_route(struct nlmsghdr
*n
, void *arg
)
726 FILE *fp
= (FILE *)arg
;
727 struct rtmsg
*r
= NLMSG_DATA(n
);
728 int len
= n
->nlmsg_len
;
729 struct rtattr
*tb
[RTA_MAX
+1];
730 int family
, color
, host_len
;
736 if (n
->nlmsg_type
!= RTM_NEWROUTE
&& n
->nlmsg_type
!= RTM_DELROUTE
) {
737 fprintf(stderr
, "Not a route: %08x %08x %08x\n",
738 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
741 if (filter
.flushb
&& n
->nlmsg_type
!= RTM_NEWROUTE
)
743 len
-= NLMSG_LENGTH(sizeof(*r
));
745 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
749 host_len
= af_bit_len(r
->rtm_family
);
751 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
752 table
= rtm_get_table(r
, tb
);
754 if (!filter_nlmsg(n
, tb
, host_len
))
760 if (NLMSG_ALIGN(filter
.flushp
) + n
->nlmsg_len
> filter
.flushe
) {
761 ret
= flush_update();
765 fn
= (struct nlmsghdr
*)(filter
.flushb
+ NLMSG_ALIGN(filter
.flushp
));
766 memcpy(fn
, n
, n
->nlmsg_len
);
767 fn
->nlmsg_type
= RTM_DELROUTE
;
768 fn
->nlmsg_flags
= NLM_F_REQUEST
;
769 fn
->nlmsg_seq
= ++rth
.seq
;
770 filter
.flushp
= (((char *)fn
) + n
->nlmsg_len
) - filter
.flushb
;
776 open_json_object(NULL
);
777 if (n
->nlmsg_type
== RTM_DELROUTE
)
778 print_bool(PRINT_ANY
, "deleted", "Deleted ", true);
780 if ((r
->rtm_type
!= RTN_UNICAST
|| show_details
> 0) &&
781 (!filter
.typemask
|| (filter
.typemask
& (1 << r
->rtm_type
))))
782 print_string(PRINT_ANY
, "type", "%s ",
783 rtnl_rtntype_n2a(r
->rtm_type
, b1
, sizeof(b1
)));
787 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
788 color
= ifa_family_color(family
);
790 if (r
->rtm_dst_len
!= host_len
) {
791 snprintf(b1
, sizeof(b1
),
792 "%s/%u", rt_addr_n2a_rta(family
, tb
[RTA_DST
]),
795 format_host_rta_r(family
, tb
[RTA_DST
],
799 } else if (r
->rtm_dst_len
) {
800 snprintf(b1
, sizeof(b1
), "0/%d ", r
->rtm_dst_len
);
802 strncpy(b1
, "default", sizeof(b1
));
804 print_color_string(PRINT_ANY
, color
,
808 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
809 color
= ifa_family_color(family
);
811 if (r
->rtm_src_len
!= host_len
) {
812 snprintf(b1
, sizeof(b1
),
814 rt_addr_n2a_rta(family
, tb
[RTA_SRC
]),
817 format_host_rta_r(family
, tb
[RTA_SRC
],
820 print_color_string(PRINT_ANY
, color
,
821 "from", "from %s ", b1
);
822 } else if (r
->rtm_src_len
) {
823 snprintf(b1
, sizeof(b1
), "0/%u", r
->rtm_src_len
);
825 print_string(PRINT_ANY
, "src", "from %s ", b1
);
829 print_uint(PRINT_ANY
, "nhid", "nhid %u ",
830 rta_getattr_u32(tb
[RTA_NH_ID
]));
833 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
836 lwt_print_encap(fp
, tb
[RTA_ENCAP_TYPE
], tb
[RTA_ENCAP
]);
838 if (r
->rtm_tos
&& filter
.tosmask
!= -1) {
839 print_string(PRINT_ANY
, "tos", "tos %s ",
840 rtnl_dsfield_n2a(r
->rtm_tos
, b1
, sizeof(b1
)));
843 if (tb
[RTA_GATEWAY
] && filter
.rvia
.bitlen
!= host_len
)
844 print_rta_gateway(fp
, r
->rtm_family
, tb
[RTA_GATEWAY
]);
847 print_rta_via(fp
, tb
[RTA_VIA
]);
849 if (tb
[RTA_OIF
] && filter
.oifmask
!= -1)
850 print_rta_if(fp
, tb
[RTA_OIF
], "dev");
852 if (table
&& (table
!= RT_TABLE_MAIN
|| show_details
> 0) && !filter
.tb
)
853 print_string(PRINT_ANY
,
854 "table", "table %s ",
855 rtnl_rttable_n2a(table
, b1
, sizeof(b1
)));
857 if (!(r
->rtm_flags
& RTM_F_CLONED
)) {
858 if ((r
->rtm_protocol
!= RTPROT_BOOT
|| show_details
> 0) &&
859 filter
.protocolmask
!= -1)
860 print_string(PRINT_ANY
,
861 "protocol", "proto %s ",
862 rtnl_rtprot_n2a(r
->rtm_protocol
,
865 if ((r
->rtm_scope
!= RT_SCOPE_UNIVERSE
|| show_details
> 0) &&
866 filter
.scopemask
!= -1)
867 print_string(PRINT_ANY
,
868 "scope", "scope %s ",
869 rtnl_rtscope_n2a(r
->rtm_scope
,
873 if (tb
[RTA_PREFSRC
] && filter
.rprefsrc
.bitlen
!= host_len
) {
875 = rt_addr_n2a_rta(r
->rtm_family
, tb
[RTA_PREFSRC
]);
877 /* Do not use format_host(). It is our local addr
878 and symbolic name will not be useful.
880 if (is_json_context())
881 print_string(PRINT_JSON
, "prefsrc", NULL
, psrc
);
884 print_color_string(PRINT_FP
,
885 ifa_family_color(r
->rtm_family
),
891 if (tb
[RTA_PRIORITY
] && filter
.metricmask
!= -1)
892 print_uint(PRINT_ANY
, "metric", "metric %u ",
893 rta_getattr_u32(tb
[RTA_PRIORITY
]));
895 print_rt_flags(fp
, r
->rtm_flags
);
898 unsigned int mark
= rta_getattr_u32(tb
[RTA_MARK
]);
901 if (is_json_context())
902 print_uint(PRINT_JSON
, "mark", NULL
, mark
);
904 print_0xhex(PRINT_FP
, NULL
,
905 "mark 0x%llx ", mark
);
907 print_uint(PRINT_FP
, NULL
,
912 if (tb
[RTA_FLOW
] && filter
.realmmask
!= ~0U)
913 print_rta_flow(fp
, tb
[RTA_FLOW
]);
916 print_uint(PRINT_ANY
, "uid", "uid %u ",
917 rta_getattr_u32(tb
[RTA_UID
]));
919 if (r
->rtm_family
== AF_INET
) {
920 if (r
->rtm_flags
& RTM_F_CLONED
)
921 print_cache_flags(fp
, r
->rtm_flags
);
923 if (tb
[RTA_CACHEINFO
])
924 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
925 } else if (r
->rtm_family
== AF_INET6
) {
926 if (tb
[RTA_CACHEINFO
])
927 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
931 print_rta_metrics(fp
, tb
[RTA_METRICS
]);
933 if (tb
[RTA_IIF
] && filter
.iifmask
!= -1)
934 print_rta_if(fp
, tb
[RTA_IIF
], "iif");
937 print_rt_pref(fp
, rta_getattr_u8(tb
[RTA_PREF
]));
939 if (tb
[RTA_TTL_PROPAGATE
]) {
940 bool propagate
= rta_getattr_u8(tb
[RTA_TTL_PROPAGATE
]);
942 if (is_json_context())
943 print_bool(PRINT_JSON
, "ttl-propogate", NULL
,
946 print_string(PRINT_FP
, NULL
,
948 propagate
? "enabled" : "disabled");
951 if (tb
[RTA_MULTIPATH
])
952 print_rta_multipath(fp
, r
, tb
[RTA_MULTIPATH
]);
954 /* If you are adding new route RTA_XXXX then place it above
955 * the RTA_MULTIPATH else it will appear that the last nexthop
956 * in the ECMP has new attributes
959 print_string(PRINT_FP
, NULL
, "\n", NULL
);
965 static int parse_one_nh(struct nlmsghdr
*n
, struct rtmsg
*r
,
966 struct rtattr
*rta
, size_t len
, struct rtnexthop
*rtnh
,
967 int *argcp
, char ***argvp
)
970 char **argv
= *argvp
;
972 while (++argv
, --argc
> 0) {
973 if (strcmp(*argv
, "via") == 0) {
978 family
= read_family(*argv
);
979 if (family
== AF_UNSPEC
)
980 family
= r
->rtm_family
;
983 get_addr(&addr
, *argv
, family
);
984 if (r
->rtm_family
== AF_UNSPEC
)
985 r
->rtm_family
= addr
.family
;
986 if (addr
.family
== r
->rtm_family
) {
987 if (rta_addattr_l(rta
, len
, RTA_GATEWAY
,
988 &addr
.data
, addr
.bytelen
))
990 rtnh
->rtnh_len
+= sizeof(struct rtattr
)
993 if (rta_addattr_l(rta
, len
, RTA_VIA
,
994 &addr
.family
, addr
.bytelen
+ 2))
996 rtnh
->rtnh_len
+= RTA_SPACE(addr
.bytelen
+ 2);
998 } else if (strcmp(*argv
, "dev") == 0) {
1000 rtnh
->rtnh_ifindex
= ll_name_to_index(*argv
);
1001 if (!rtnh
->rtnh_ifindex
)
1002 return nodev(*argv
);
1003 } else if (strcmp(*argv
, "weight") == 0) {
1007 if (get_unsigned(&w
, *argv
, 0) || w
== 0 || w
> 256)
1008 invarg("\"weight\" is invalid\n", *argv
);
1009 rtnh
->rtnh_hops
= w
- 1;
1010 } else if (strcmp(*argv
, "onlink") == 0) {
1011 rtnh
->rtnh_flags
|= RTNH_F_ONLINK
;
1012 } else if (matches(*argv
, "realms") == 0) {
1016 if (get_rt_realms_or_raw(&realm
, *argv
))
1017 invarg("\"realm\" value is invalid\n", *argv
);
1018 if (rta_addattr32(rta
, len
, RTA_FLOW
, realm
))
1020 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + 4;
1021 } else if (strcmp(*argv
, "encap") == 0) {
1022 int old_len
= rta
->rta_len
;
1024 if (lwt_parse_encap(rta
, len
, &argc
, &argv
,
1025 RTA_ENCAP
, RTA_ENCAP_TYPE
))
1027 rtnh
->rtnh_len
+= rta
->rta_len
- old_len
;
1028 } else if (strcmp(*argv
, "as") == 0) {
1032 if (strcmp(*argv
, "to") == 0)
1034 get_addr(&addr
, *argv
, r
->rtm_family
);
1035 if (rta_addattr_l(rta
, len
, RTA_NEWDST
,
1036 &addr
.data
, addr
.bytelen
))
1038 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + addr
.bytelen
;
1047 static int parse_nexthops(struct nlmsghdr
*n
, struct rtmsg
*r
,
1048 int argc
, char **argv
)
1051 struct rtattr
*rta
= (void *)buf
;
1052 struct rtnexthop
*rtnh
;
1054 rta
->rta_type
= RTA_MULTIPATH
;
1055 rta
->rta_len
= RTA_LENGTH(0);
1056 rtnh
= RTA_DATA(rta
);
1059 if (strcmp(*argv
, "nexthop") != 0) {
1060 fprintf(stderr
, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv
);
1064 fprintf(stderr
, "Error: unexpected end of line after \"nexthop\"\n");
1067 memset(rtnh
, 0, sizeof(*rtnh
));
1068 rtnh
->rtnh_len
= sizeof(*rtnh
);
1069 rta
->rta_len
+= rtnh
->rtnh_len
;
1070 if (parse_one_nh(n
, r
, rta
, 4096, rtnh
, &argc
, &argv
)) {
1071 fprintf(stderr
, "Error: cannot parse nexthop\n");
1074 rtnh
= RTNH_NEXT(rtnh
);
1077 if (rta
->rta_len
> RTA_LENGTH(0))
1078 return addattr_l(n
, 4096, RTA_MULTIPATH
,
1079 RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1083 static int iproute_modify(int cmd
, unsigned int flags
, int argc
, char **argv
)
1090 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1091 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
1092 .n
.nlmsg_type
= cmd
,
1093 .r
.rtm_family
= preferred_family
,
1094 .r
.rtm_table
= RT_TABLE_MAIN
,
1095 .r
.rtm_scope
= RT_SCOPE_NOWHERE
,
1098 struct rtattr
*mxrta
= (void *)mxbuf
;
1099 unsigned int mxlock
= 0;
1110 if (cmd
!= RTM_DELROUTE
) {
1111 req
.r
.rtm_protocol
= RTPROT_BOOT
;
1112 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1113 req
.r
.rtm_type
= RTN_UNICAST
;
1116 mxrta
->rta_type
= RTA_METRICS
;
1117 mxrta
->rta_len
= RTA_LENGTH(0);
1120 if (strcmp(*argv
, "src") == 0) {
1124 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1125 if (req
.r
.rtm_family
== AF_UNSPEC
)
1126 req
.r
.rtm_family
= addr
.family
;
1127 addattr_l(&req
.n
, sizeof(req
),
1128 RTA_PREFSRC
, &addr
.data
, addr
.bytelen
);
1129 } else if (strcmp(*argv
, "as") == 0) {
1133 if (strcmp(*argv
, "to") == 0) {
1136 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1137 if (req
.r
.rtm_family
== AF_UNSPEC
)
1138 req
.r
.rtm_family
= addr
.family
;
1139 addattr_l(&req
.n
, sizeof(req
),
1140 RTA_NEWDST
, &addr
.data
, addr
.bytelen
);
1141 } else if (strcmp(*argv
, "via") == 0) {
1146 invarg("use nexthop syntax to specify multiple via\n",
1151 family
= read_family(*argv
);
1152 if (family
== AF_UNSPEC
)
1153 family
= req
.r
.rtm_family
;
1156 get_addr(&addr
, *argv
, family
);
1157 if (req
.r
.rtm_family
== AF_UNSPEC
)
1158 req
.r
.rtm_family
= addr
.family
;
1159 if (addr
.family
== req
.r
.rtm_family
)
1160 addattr_l(&req
.n
, sizeof(req
), RTA_GATEWAY
,
1161 &addr
.data
, addr
.bytelen
);
1163 addattr_l(&req
.n
, sizeof(req
), RTA_VIA
,
1164 &addr
.family
, addr
.bytelen
+2);
1165 } else if (strcmp(*argv
, "from") == 0) {
1169 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1170 if (req
.r
.rtm_family
== AF_UNSPEC
)
1171 req
.r
.rtm_family
= addr
.family
;
1173 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
, &addr
.data
, addr
.bytelen
);
1174 req
.r
.rtm_src_len
= addr
.bitlen
;
1175 } else if (strcmp(*argv
, "tos") == 0 ||
1176 matches(*argv
, "dsfield") == 0) {
1180 if (rtnl_dsfield_a2n(&tos
, *argv
))
1181 invarg("\"tos\" value is invalid\n", *argv
);
1182 req
.r
.rtm_tos
= tos
;
1183 } else if (strcmp(*argv
, "expires") == 0) {
1187 if (get_u32(&expires
, *argv
, 0))
1188 invarg("\"expires\" value is invalid\n", *argv
);
1189 addattr32(&req
.n
, sizeof(req
), RTA_EXPIRES
, expires
);
1190 } else if (matches(*argv
, "metric") == 0 ||
1191 matches(*argv
, "priority") == 0 ||
1192 strcmp(*argv
, "preference") == 0) {
1196 if (get_u32(&metric
, *argv
, 0))
1197 invarg("\"metric\" value is invalid\n", *argv
);
1198 addattr32(&req
.n
, sizeof(req
), RTA_PRIORITY
, metric
);
1199 } else if (strcmp(*argv
, "scope") == 0) {
1203 if (rtnl_rtscope_a2n(&scope
, *argv
))
1204 invarg("invalid \"scope\" value\n", *argv
);
1205 req
.r
.rtm_scope
= scope
;
1207 } else if (strcmp(*argv
, "mtu") == 0) {
1211 if (strcmp(*argv
, "lock") == 0) {
1212 mxlock
|= (1<<RTAX_MTU
);
1215 if (get_unsigned(&mtu
, *argv
, 0))
1216 invarg("\"mtu\" value is invalid\n", *argv
);
1217 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_MTU
, mtu
);
1218 } else if (strcmp(*argv
, "hoplimit") == 0) {
1219 unsigned int hoplimit
;
1222 if (strcmp(*argv
, "lock") == 0) {
1223 mxlock
|= (1<<RTAX_HOPLIMIT
);
1226 if (get_unsigned(&hoplimit
, *argv
, 0) || hoplimit
> 255)
1227 invarg("\"hoplimit\" value is invalid\n", *argv
);
1228 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_HOPLIMIT
, hoplimit
);
1229 } else if (strcmp(*argv
, "advmss") == 0) {
1233 if (strcmp(*argv
, "lock") == 0) {
1234 mxlock
|= (1<<RTAX_ADVMSS
);
1237 if (get_unsigned(&mss
, *argv
, 0))
1238 invarg("\"mss\" value is invalid\n", *argv
);
1239 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_ADVMSS
, mss
);
1240 } else if (matches(*argv
, "reordering") == 0) {
1244 if (strcmp(*argv
, "lock") == 0) {
1245 mxlock
|= (1<<RTAX_REORDERING
);
1248 if (get_unsigned(&reord
, *argv
, 0))
1249 invarg("\"reordering\" value is invalid\n", *argv
);
1250 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_REORDERING
, reord
);
1251 } else if (strcmp(*argv
, "rtt") == 0) {
1255 if (strcmp(*argv
, "lock") == 0) {
1256 mxlock
|= (1<<RTAX_RTT
);
1259 if (get_time_rtt(&rtt
, *argv
, &raw
))
1260 invarg("\"rtt\" value is invalid\n", *argv
);
1261 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTT
,
1262 (raw
) ? rtt
: rtt
* 8);
1263 } else if (strcmp(*argv
, "rto_min") == 0) {
1264 unsigned int rto_min
;
1267 mxlock
|= (1<<RTAX_RTO_MIN
);
1268 if (get_time_rtt(&rto_min
, *argv
, &raw
))
1269 invarg("\"rto_min\" value is invalid\n",
1271 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTO_MIN
,
1273 } else if (matches(*argv
, "window") == 0) {
1277 if (strcmp(*argv
, "lock") == 0) {
1278 mxlock
|= (1<<RTAX_WINDOW
);
1281 if (get_unsigned(&win
, *argv
, 0))
1282 invarg("\"window\" value is invalid\n", *argv
);
1283 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_WINDOW
, win
);
1284 } else if (matches(*argv
, "cwnd") == 0) {
1288 if (strcmp(*argv
, "lock") == 0) {
1289 mxlock
|= (1<<RTAX_CWND
);
1292 if (get_unsigned(&win
, *argv
, 0))
1293 invarg("\"cwnd\" value is invalid\n", *argv
);
1294 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_CWND
, win
);
1295 } else if (matches(*argv
, "initcwnd") == 0) {
1299 if (strcmp(*argv
, "lock") == 0) {
1300 mxlock
|= (1<<RTAX_INITCWND
);
1303 if (get_unsigned(&win
, *argv
, 0))
1304 invarg("\"initcwnd\" value is invalid\n", *argv
);
1305 rta_addattr32(mxrta
, sizeof(mxbuf
),
1306 RTAX_INITCWND
, win
);
1307 } else if (matches(*argv
, "initrwnd") == 0) {
1311 if (strcmp(*argv
, "lock") == 0) {
1312 mxlock
|= (1<<RTAX_INITRWND
);
1315 if (get_unsigned(&win
, *argv
, 0))
1316 invarg("\"initrwnd\" value is invalid\n", *argv
);
1317 rta_addattr32(mxrta
, sizeof(mxbuf
),
1318 RTAX_INITRWND
, win
);
1319 } else if (matches(*argv
, "features") == 0) {
1320 unsigned int features
= 0;
1325 if (strcmp(*argv
, "ecn") == 0)
1326 features
|= RTAX_FEATURE_ECN
;
1328 invarg("\"features\" value not valid\n", *argv
);
1332 rta_addattr32(mxrta
, sizeof(mxbuf
),
1333 RTAX_FEATURES
, features
);
1334 } else if (matches(*argv
, "quickack") == 0) {
1335 unsigned int quickack
;
1338 if (get_unsigned(&quickack
, *argv
, 0))
1339 invarg("\"quickack\" value is invalid\n", *argv
);
1340 if (quickack
!= 1 && quickack
!= 0)
1341 invarg("\"quickack\" value should be 0 or 1\n", *argv
);
1342 rta_addattr32(mxrta
, sizeof(mxbuf
),
1343 RTAX_QUICKACK
, quickack
);
1344 } else if (matches(*argv
, "congctl") == 0) {
1346 if (strcmp(*argv
, "lock") == 0) {
1347 mxlock
|= 1 << RTAX_CC_ALGO
;
1350 rta_addattr_l(mxrta
, sizeof(mxbuf
), RTAX_CC_ALGO
, *argv
,
1352 } else if (matches(*argv
, "rttvar") == 0) {
1356 if (strcmp(*argv
, "lock") == 0) {
1357 mxlock
|= (1<<RTAX_RTTVAR
);
1360 if (get_time_rtt(&win
, *argv
, &raw
))
1361 invarg("\"rttvar\" value is invalid\n", *argv
);
1362 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTTVAR
,
1363 (raw
) ? win
: win
* 4);
1364 } else if (matches(*argv
, "ssthresh") == 0) {
1368 if (strcmp(*argv
, "lock") == 0) {
1369 mxlock
|= (1<<RTAX_SSTHRESH
);
1372 if (get_unsigned(&win
, *argv
, 0))
1373 invarg("\"ssthresh\" value is invalid\n", *argv
);
1374 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_SSTHRESH
, win
);
1375 } else if (matches(*argv
, "realms") == 0) {
1379 if (get_rt_realms_or_raw(&realm
, *argv
))
1380 invarg("\"realm\" value is invalid\n", *argv
);
1381 addattr32(&req
.n
, sizeof(req
), RTA_FLOW
, realm
);
1382 } else if (strcmp(*argv
, "onlink") == 0) {
1383 req
.r
.rtm_flags
|= RTNH_F_ONLINK
;
1384 } else if (strcmp(*argv
, "nexthop") == 0) {
1387 } else if (!strcmp(*argv
, "nhid")) {
1389 if (get_u32(&nhid
, *argv
, 0))
1390 invarg("\"id\" value is invalid\n", *argv
);
1391 addattr32(&req
.n
, sizeof(req
), RTA_NH_ID
, nhid
);
1392 } else if (matches(*argv
, "protocol") == 0) {
1396 if (rtnl_rtprot_a2n(&prot
, *argv
))
1397 invarg("\"protocol\" value is invalid\n", *argv
);
1398 req
.r
.rtm_protocol
= prot
;
1399 } else if (matches(*argv
, "table") == 0) {
1403 if (rtnl_rttable_a2n(&tid
, *argv
))
1404 invarg("\"table\" value is invalid\n", *argv
);
1406 req
.r
.rtm_table
= tid
;
1408 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1409 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1412 } else if (matches(*argv
, "vrf") == 0) {
1416 tid
= ipvrf_get_table(*argv
);
1418 invarg("Invalid VRF\n", *argv
);
1420 req
.r
.rtm_table
= tid
;
1422 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1423 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1426 } else if (strcmp(*argv
, "dev") == 0 ||
1427 strcmp(*argv
, "oif") == 0) {
1430 } else if (matches(*argv
, "pref") == 0) {
1434 if (strcmp(*argv
, "low") == 0)
1435 pref
= ICMPV6_ROUTER_PREF_LOW
;
1436 else if (strcmp(*argv
, "medium") == 0)
1437 pref
= ICMPV6_ROUTER_PREF_MEDIUM
;
1438 else if (strcmp(*argv
, "high") == 0)
1439 pref
= ICMPV6_ROUTER_PREF_HIGH
;
1440 else if (get_u8(&pref
, *argv
, 0))
1441 invarg("\"pref\" value is invalid\n", *argv
);
1442 addattr8(&req
.n
, sizeof(req
), RTA_PREF
, pref
);
1443 } else if (strcmp(*argv
, "encap") == 0) {
1445 struct rtattr
*rta
= (void *)buf
;
1447 rta
->rta_type
= RTA_ENCAP
;
1448 rta
->rta_len
= RTA_LENGTH(0);
1450 lwt_parse_encap(rta
, sizeof(buf
), &argc
, &argv
,
1451 RTA_ENCAP
, RTA_ENCAP_TYPE
);
1453 if (rta
->rta_len
> RTA_LENGTH(0))
1454 addraw_l(&req
.n
, 1024
1455 , RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1456 } else if (strcmp(*argv
, "ttl-propagate") == 0) {
1460 if (matches(*argv
, "enabled") == 0)
1462 else if (matches(*argv
, "disabled") == 0)
1465 invarg("\"ttl-propagate\" value is invalid\n",
1468 addattr8(&req
.n
, sizeof(req
), RTA_TTL_PROPAGATE
,
1470 } else if (matches(*argv
, "fastopen_no_cookie") == 0) {
1471 unsigned int fastopen_no_cookie
;
1474 if (get_unsigned(&fastopen_no_cookie
, *argv
, 0))
1475 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv
);
1476 if (fastopen_no_cookie
!= 1 && fastopen_no_cookie
!= 0)
1477 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv
);
1478 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_FASTOPEN_NO_COOKIE
, fastopen_no_cookie
);
1483 if (strcmp(*argv
, "to") == 0) {
1486 if ((**argv
< '0' || **argv
> '9') &&
1487 rtnl_rtntype_a2n(&type
, *argv
) == 0) {
1489 req
.r
.rtm_type
= type
;
1493 if (matches(*argv
, "help") == 0)
1496 duparg2("to", *argv
);
1497 get_prefix(&dst
, *argv
, req
.r
.rtm_family
);
1498 if (req
.r
.rtm_family
== AF_UNSPEC
)
1499 req
.r
.rtm_family
= dst
.family
;
1500 req
.r
.rtm_dst_len
= dst
.bitlen
;
1503 addattr_l(&req
.n
, sizeof(req
),
1504 RTA_DST
, &dst
.data
, dst
.bytelen
);
1513 int idx
= ll_name_to_index(d
);
1517 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
1520 if (mxrta
->rta_len
> RTA_LENGTH(0)) {
1522 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_LOCK
, mxlock
);
1523 addattr_l(&req
.n
, sizeof(req
), RTA_METRICS
, RTA_DATA(mxrta
), RTA_PAYLOAD(mxrta
));
1526 if (nhs_ok
&& parse_nexthops(&req
.n
, &req
.r
, argc
, argv
))
1529 if (req
.r
.rtm_family
== AF_UNSPEC
)
1530 req
.r
.rtm_family
= AF_INET
;
1533 if (req
.r
.rtm_type
== RTN_LOCAL
||
1534 req
.r
.rtm_type
== RTN_BROADCAST
||
1535 req
.r
.rtm_type
== RTN_NAT
||
1536 req
.r
.rtm_type
== RTN_ANYCAST
)
1537 req
.r
.rtm_table
= RT_TABLE_LOCAL
;
1540 if (req
.r
.rtm_family
== AF_INET6
||
1541 req
.r
.rtm_family
== AF_MPLS
)
1542 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1543 else if (req
.r
.rtm_type
== RTN_LOCAL
||
1544 req
.r
.rtm_type
== RTN_NAT
)
1545 req
.r
.rtm_scope
= RT_SCOPE_HOST
;
1546 else if (req
.r
.rtm_type
== RTN_BROADCAST
||
1547 req
.r
.rtm_type
== RTN_MULTICAST
||
1548 req
.r
.rtm_type
== RTN_ANYCAST
)
1549 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1550 else if (req
.r
.rtm_type
== RTN_UNICAST
||
1551 req
.r
.rtm_type
== RTN_UNSPEC
) {
1552 if (cmd
== RTM_DELROUTE
)
1553 req
.r
.rtm_scope
= RT_SCOPE_NOWHERE
;
1554 else if (!gw_ok
&& !nhs_ok
&& !nhid
)
1555 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1559 if (!type_ok
&& req
.r
.rtm_family
== AF_MPLS
)
1560 req
.r
.rtm_type
= RTN_UNICAST
;
1562 if (rtnl_talk(&rth
, &req
.n
, NULL
) < 0)
1568 static int iproute_flush_cache(void)
1570 #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1573 int flush_fd
= open(ROUTE_FLUSH_PATH
, O_WRONLY
);
1574 char *buffer
= "-1";
1577 fprintf(stderr
, "Cannot open \"%s\": %s\n",
1578 ROUTE_FLUSH_PATH
, strerror(errno
));
1582 len
= strlen(buffer
);
1584 if ((write(flush_fd
, (void *)buffer
, len
)) < len
) {
1585 fprintf(stderr
, "Cannot flush routing cache\n");
1593 static __u32 route_dump_magic
= 0x45311224;
1595 static int save_route(struct nlmsghdr
*n
, void *arg
)
1598 int len
= n
->nlmsg_len
;
1599 struct rtmsg
*r
= NLMSG_DATA(n
);
1600 struct rtattr
*tb
[RTA_MAX
+1];
1603 host_len
= af_bit_len(r
->rtm_family
);
1604 len
-= NLMSG_LENGTH(sizeof(*r
));
1605 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
1607 if (!filter_nlmsg(n
, tb
, host_len
))
1610 ret
= write(STDOUT_FILENO
, n
, n
->nlmsg_len
);
1611 if ((ret
> 0) && (ret
!= n
->nlmsg_len
)) {
1612 fprintf(stderr
, "Short write while saving nlmsg\n");
1616 return ret
== n
->nlmsg_len
? 0 : ret
;
1619 static int save_route_prep(void)
1623 if (isatty(STDOUT_FILENO
)) {
1624 fprintf(stderr
, "Not sending a binary stream to stdout\n");
1628 ret
= write(STDOUT_FILENO
, &route_dump_magic
, sizeof(route_dump_magic
));
1629 if (ret
!= sizeof(route_dump_magic
)) {
1630 fprintf(stderr
, "Can't write magic to dump file\n");
1637 static int iproute_dump_filter(struct nlmsghdr
*nlh
, int reqlen
)
1639 struct rtmsg
*rtm
= NLMSG_DATA(nlh
);
1642 rtm
->rtm_protocol
= filter
.protocol
;
1644 rtm
->rtm_flags
|= RTM_F_CLONED
;
1647 err
= addattr32(nlh
, reqlen
, RTA_TABLE
, filter
.tb
);
1653 err
= addattr32(nlh
, reqlen
, RTA_OIF
, filter
.oif
);
1661 static int iproute_flush(int family
, rtnl_filter_t filter_fn
)
1663 time_t start
= time(0);
1664 char flushb
[4096-512];
1668 if (filter
.cloned
) {
1669 if (family
!= AF_INET6
) {
1670 iproute_flush_cache();
1672 printf("*** IPv4 routing cache is flushed.\n");
1674 if (family
== AF_INET
)
1678 filter
.flushb
= flushb
;
1680 filter
.flushe
= sizeof(flushb
);
1683 if (rtnl_routedump_req(&rth
, family
, iproute_dump_filter
) < 0) {
1684 perror("Cannot send dump request");
1688 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1689 fprintf(stderr
, "Flush terminated\n");
1692 if (filter
.flushed
== 0) {
1695 (!filter
.cloned
|| family
== AF_INET6
))
1696 printf("Nothing to flush.\n");
1698 printf("*** Flush is complete after %d round%s ***\n",
1699 round
, round
> 1 ? "s" : "");
1705 ret
= flush_update();
1709 if (time(0) - start
> 30) {
1710 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1711 (long)(time(0) - start
), filter
.flushed
);
1716 printf("\n*** Round %d, deleting %d entries ***\n",
1717 round
, filter
.flushed
);
1723 static int iproute_list_flush_or_save(int argc
, char **argv
, int action
)
1725 int dump_family
= preferred_family
;
1728 unsigned int mark
= 0;
1729 rtnl_filter_t filter_fn
;
1731 if (action
== IPROUTE_SAVE
) {
1732 if (save_route_prep())
1735 filter_fn
= save_route
;
1737 filter_fn
= print_route
;
1739 iproute_reset_filter(0);
1740 filter
.tb
= RT_TABLE_MAIN
;
1742 if ((action
== IPROUTE_FLUSH
) && argc
<= 0) {
1743 fprintf(stderr
, "\"ip route flush\" requires arguments.\n");
1748 if (matches(*argv
, "table") == 0) {
1752 if (rtnl_rttable_a2n(&tid
, *argv
)) {
1753 if (strcmp(*argv
, "all") == 0) {
1755 } else if (strcmp(*argv
, "cache") == 0) {
1757 } else if (strcmp(*argv
, "help") == 0) {
1760 invarg("table id value is invalid\n", *argv
);
1764 } else if (matches(*argv
, "vrf") == 0) {
1768 tid
= ipvrf_get_table(*argv
);
1770 invarg("Invalid VRF\n", *argv
);
1772 filter
.typemask
= ~(1 << RTN_LOCAL
| 1<<RTN_BROADCAST
);
1773 } else if (matches(*argv
, "cached") == 0 ||
1774 matches(*argv
, "cloned") == 0) {
1776 } else if (strcmp(*argv
, "tos") == 0 ||
1777 matches(*argv
, "dsfield") == 0) {
1781 if (rtnl_dsfield_a2n(&tos
, *argv
))
1782 invarg("TOS value is invalid\n", *argv
);
1784 filter
.tosmask
= -1;
1785 } else if (matches(*argv
, "protocol") == 0) {
1789 filter
.protocolmask
= -1;
1790 if (rtnl_rtprot_a2n(&prot
, *argv
)) {
1791 if (strcmp(*argv
, "all") != 0)
1792 invarg("invalid \"protocol\"\n", *argv
);
1794 filter
.protocolmask
= 0;
1796 filter
.protocol
= prot
;
1797 } else if (matches(*argv
, "scope") == 0) {
1801 filter
.scopemask
= -1;
1802 if (rtnl_rtscope_a2n(&scope
, *argv
)) {
1803 if (strcmp(*argv
, "all") != 0)
1804 invarg("invalid \"scope\"\n", *argv
);
1805 scope
= RT_SCOPE_NOWHERE
;
1806 filter
.scopemask
= 0;
1808 filter
.scope
= scope
;
1809 } else if (matches(*argv
, "type") == 0) {
1813 if (rtnl_rtntype_a2n(&type
, *argv
))
1814 invarg("node type value is invalid\n", *argv
);
1815 filter
.typemask
= (1<<type
);
1816 } else if (strcmp(*argv
, "dev") == 0 ||
1817 strcmp(*argv
, "oif") == 0) {
1820 } else if (strcmp(*argv
, "iif") == 0) {
1823 } else if (strcmp(*argv
, "mark") == 0) {
1825 if (get_unsigned(&mark
, *argv
, 0))
1826 invarg("invalid mark value", *argv
);
1827 filter
.markmask
= -1;
1828 } else if (matches(*argv
, "metric") == 0 ||
1829 matches(*argv
, "priority") == 0 ||
1830 strcmp(*argv
, "preference") == 0) {
1834 if (get_u32(&metric
, *argv
, 0))
1835 invarg("\"metric\" value is invalid\n", *argv
);
1836 filter
.metric
= metric
;
1837 filter
.metricmask
= -1;
1838 } else if (strcmp(*argv
, "via") == 0) {
1842 family
= read_family(*argv
);
1843 if (family
== AF_UNSPEC
)
1844 family
= dump_family
;
1847 get_prefix(&filter
.rvia
, *argv
, family
);
1848 } else if (strcmp(*argv
, "src") == 0) {
1850 get_prefix(&filter
.rprefsrc
, *argv
, dump_family
);
1851 } else if (matches(*argv
, "realms") == 0) {
1855 if (get_rt_realms_or_raw(&realm
, *argv
))
1856 invarg("invalid realms\n", *argv
);
1857 filter
.realm
= realm
;
1858 filter
.realmmask
= ~0U;
1859 if ((filter
.realm
&0xFFFF) == 0 &&
1860 (*argv
)[strlen(*argv
) - 1] == '/')
1861 filter
.realmmask
&= ~0xFFFF;
1862 if ((filter
.realm
&0xFFFF0000U
) == 0 &&
1863 (strchr(*argv
, '/') == NULL
||
1865 filter
.realmmask
&= ~0xFFFF0000U
;
1866 } else if (matches(*argv
, "from") == 0) {
1868 if (matches(*argv
, "root") == 0) {
1870 get_prefix(&filter
.rsrc
, *argv
, dump_family
);
1871 } else if (matches(*argv
, "match") == 0) {
1873 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1875 if (matches(*argv
, "exact") == 0) {
1878 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1879 filter
.rsrc
= filter
.msrc
;
1882 if (matches(*argv
, "to") == 0) {
1885 if (matches(*argv
, "root") == 0) {
1887 get_prefix(&filter
.rdst
, *argv
, dump_family
);
1888 } else if (matches(*argv
, "match") == 0) {
1890 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1892 if (matches(*argv
, "exact") == 0) {
1895 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1896 filter
.rdst
= filter
.mdst
;
1902 if (dump_family
== AF_UNSPEC
&& filter
.tb
)
1903 dump_family
= AF_INET
;
1909 idx
= ll_name_to_index(id
);
1913 filter
.iifmask
= -1;
1916 idx
= ll_name_to_index(od
);
1920 filter
.oifmask
= -1;
1925 if (action
== IPROUTE_FLUSH
)
1926 return iproute_flush(dump_family
, filter_fn
);
1928 if (rtnl_routedump_req(&rth
, dump_family
, iproute_dump_filter
) < 0) {
1929 perror("Cannot send dump request");
1935 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1936 fprintf(stderr
, "Dump terminated\n");
1946 static int iproute_get(int argc
, char **argv
)
1953 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1954 .n
.nlmsg_flags
= NLM_F_REQUEST
,
1955 .n
.nlmsg_type
= RTM_GETROUTE
,
1956 .r
.rtm_family
= preferred_family
,
1960 struct nlmsghdr
*answer
;
1964 unsigned int mark
= 0;
1965 bool address_found
= false;
1967 iproute_reset_filter(0);
1971 if (strcmp(*argv
, "tos") == 0 ||
1972 matches(*argv
, "dsfield") == 0) {
1976 if (rtnl_dsfield_a2n(&tos
, *argv
))
1977 invarg("TOS value is invalid\n", *argv
);
1978 req
.r
.rtm_tos
= tos
;
1979 } else if (matches(*argv
, "from") == 0) {
1983 if (matches(*argv
, "help") == 0)
1986 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1987 if (req
.r
.rtm_family
== AF_UNSPEC
)
1988 req
.r
.rtm_family
= addr
.family
;
1990 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
,
1991 &addr
.data
, addr
.bytelen
);
1992 req
.r
.rtm_src_len
= addr
.bitlen
;
1993 } else if (matches(*argv
, "iif") == 0) {
1996 } else if (matches(*argv
, "mark") == 0) {
1998 if (get_unsigned(&mark
, *argv
, 0))
1999 invarg("invalid mark value", *argv
);
2000 } else if (matches(*argv
, "oif") == 0 ||
2001 strcmp(*argv
, "dev") == 0) {
2004 } else if (matches(*argv
, "notify") == 0) {
2005 req
.r
.rtm_flags
|= RTM_F_NOTIFY
;
2006 } else if (matches(*argv
, "connected") == 0) {
2008 } else if (matches(*argv
, "vrf") == 0) {
2010 if (!name_is_vrf(*argv
))
2011 invarg("Invalid VRF\n", *argv
);
2013 } else if (matches(*argv
, "uid") == 0) {
2017 if (get_unsigned(&uid
, *argv
, 0))
2018 invarg("invalid UID\n", *argv
);
2019 addattr32(&req
.n
, sizeof(req
), RTA_UID
, uid
);
2020 } else if (matches(*argv
, "fibmatch") == 0) {
2022 } else if (strcmp(*argv
, "as") == 0) {
2026 if (strcmp(*argv
, "to") == 0)
2028 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
2029 if (req
.r
.rtm_family
== AF_UNSPEC
)
2030 req
.r
.rtm_family
= addr
.family
;
2031 addattr_l(&req
.n
, sizeof(req
), RTA_NEWDST
,
2032 &addr
.data
, addr
.bytelen
);
2033 } else if (matches(*argv
, "sport") == 0) {
2037 if (get_be16(&sport
, *argv
, 0))
2038 invarg("invalid sport\n", *argv
);
2039 addattr16(&req
.n
, sizeof(req
), RTA_SPORT
, sport
);
2040 } else if (matches(*argv
, "dport") == 0) {
2044 if (get_be16(&dport
, *argv
, 0))
2045 invarg("invalid dport\n", *argv
);
2046 addattr16(&req
.n
, sizeof(req
), RTA_DPORT
, dport
);
2047 } else if (matches(*argv
, "ipproto") == 0) {
2051 ipproto
= inet_proto_a2n(*argv
);
2053 invarg("Invalid \"ipproto\" value\n",
2055 addattr8(&req
.n
, sizeof(req
), RTA_IP_PROTO
, ipproto
);
2059 if (strcmp(*argv
, "to") == 0) {
2062 if (matches(*argv
, "help") == 0)
2064 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
2065 if (req
.r
.rtm_family
== AF_UNSPEC
)
2066 req
.r
.rtm_family
= addr
.family
;
2068 addattr_l(&req
.n
, sizeof(req
),
2069 RTA_DST
, &addr
.data
, addr
.bytelen
);
2070 req
.r
.rtm_dst_len
= addr
.bitlen
;
2071 address_found
= true;
2076 if (!address_found
) {
2077 fprintf(stderr
, "need at least a destination address\n");
2085 idx
= ll_name_to_index(idev
);
2088 addattr32(&req
.n
, sizeof(req
), RTA_IIF
, idx
);
2091 idx
= ll_name_to_index(odev
);
2094 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
2098 addattr32(&req
.n
, sizeof(req
), RTA_MARK
, mark
);
2100 if (req
.r
.rtm_family
== AF_UNSPEC
)
2101 req
.r
.rtm_family
= AF_INET
;
2103 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2104 if (req
.r
.rtm_family
== AF_INET
)
2105 req
.r
.rtm_flags
|= RTM_F_LOOKUP_TABLE
;
2107 req
.r
.rtm_flags
|= RTM_F_FIB_MATCH
;
2109 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2114 if (connected
&& !from_ok
) {
2115 struct rtmsg
*r
= NLMSG_DATA(answer
);
2116 int len
= answer
->nlmsg_len
;
2117 struct rtattr
*tb
[RTA_MAX
+1];
2119 if (print_route(answer
, (void *)stdout
) < 0) {
2120 fprintf(stderr
, "An error :-)\n");
2125 if (answer
->nlmsg_type
!= RTM_NEWROUTE
) {
2126 fprintf(stderr
, "Not a route?\n");
2130 len
-= NLMSG_LENGTH(sizeof(*r
));
2132 fprintf(stderr
, "Wrong len %d\n", len
);
2137 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2139 if (tb
[RTA_PREFSRC
]) {
2140 tb
[RTA_PREFSRC
]->rta_type
= RTA_SRC
;
2141 r
->rtm_src_len
= 8*RTA_PAYLOAD(tb
[RTA_PREFSRC
]);
2142 } else if (!tb
[RTA_SRC
]) {
2143 fprintf(stderr
, "Failed to connect the route\n");
2147 if (!odev
&& tb
[RTA_OIF
])
2148 tb
[RTA_OIF
]->rta_type
= 0;
2149 if (tb
[RTA_GATEWAY
])
2150 tb
[RTA_GATEWAY
]->rta_type
= 0;
2152 tb
[RTA_VIA
]->rta_type
= 0;
2153 if (!idev
&& tb
[RTA_IIF
])
2154 tb
[RTA_IIF
]->rta_type
= 0;
2155 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
2156 req
.n
.nlmsg_type
= RTM_GETROUTE
;
2160 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2164 if (print_route(answer
, (void *)stdout
) < 0) {
2165 fprintf(stderr
, "An error :-)\n");
2175 static int rtattr_cmp(const struct rtattr
*rta1
, const struct rtattr
*rta2
)
2177 if (!rta1
|| !rta2
|| rta1
->rta_len
!= rta2
->rta_len
)
2180 return memcmp(RTA_DATA(rta1
), RTA_DATA(rta2
), RTA_PAYLOAD(rta1
));
2183 static int restore_handler(struct rtnl_ctrl_data
*ctrl
,
2184 struct nlmsghdr
*n
, void *arg
)
2186 struct rtmsg
*r
= NLMSG_DATA(n
);
2187 struct rtattr
*tb
[RTA_MAX
+1];
2188 int len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
));
2189 int ret
, prio
= *(int *)arg
;
2191 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2193 /* Restore routes in correct order:
2194 * 0. ones for local addresses,
2195 * 1. ones for local networks,
2196 * 2. others (remote networks/hosts).
2198 if (!prio
&& !tb
[RTA_GATEWAY
] && (!tb
[RTA_PREFSRC
] ||
2199 !rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
])))
2201 else if (prio
== 1 && !tb
[RTA_GATEWAY
] && tb
[RTA_PREFSRC
] &&
2202 rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
]))
2204 else if (prio
== 2 && tb
[RTA_GATEWAY
])
2210 n
->nlmsg_flags
|= NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_ACK
;
2214 ret
= rtnl_talk(&rth
, n
, NULL
);
2215 if ((ret
< 0) && (errno
== EEXIST
))
2221 static int route_dump_check_magic(void)
2226 if (isatty(STDIN_FILENO
)) {
2227 fprintf(stderr
, "Can't restore route dump from a terminal\n");
2231 ret
= fread(&magic
, sizeof(magic
), 1, stdin
);
2232 if (magic
!= route_dump_magic
) {
2233 fprintf(stderr
, "Magic mismatch (%d elems, %x magic)\n", ret
, magic
);
2240 static int iproute_restore(void)
2244 if (route_dump_check_magic())
2249 perror("Failed to restore: ftell");
2253 for (prio
= 0; prio
< 3; prio
++) {
2256 err
= rtnl_from_file(stdin
, &restore_handler
, &prio
);
2260 if (fseek(stdin
, pos
, SEEK_SET
) == -1) {
2261 perror("Failed to restore: fseek");
2269 static int show_handler(struct rtnl_ctrl_data
*ctrl
,
2270 struct nlmsghdr
*n
, void *arg
)
2272 print_route(n
, stdout
);
2276 static int iproute_showdump(void)
2278 if (route_dump_check_magic())
2281 if (rtnl_from_file(stdin
, &show_handler
, NULL
))
2287 void iproute_reset_filter(int ifindex
)
2289 memset(&filter
, 0, sizeof(filter
));
2290 filter
.mdst
.bitlen
= -1;
2291 filter
.msrc
.bitlen
= -1;
2292 filter
.oif
= ifindex
;
2294 filter
.oifmask
= -1;
2297 int do_iproute(int argc
, char **argv
)
2300 return iproute_list_flush_or_save(0, NULL
, IPROUTE_LIST
);
2302 if (matches(*argv
, "add") == 0)
2303 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_EXCL
,
2305 if (matches(*argv
, "change") == 0 || strcmp(*argv
, "chg") == 0)
2306 return iproute_modify(RTM_NEWROUTE
, NLM_F_REPLACE
,
2308 if (matches(*argv
, "replace") == 0)
2309 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_REPLACE
,
2311 if (matches(*argv
, "prepend") == 0)
2312 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
,
2314 if (matches(*argv
, "append") == 0)
2315 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_APPEND
,
2317 if (matches(*argv
, "test") == 0)
2318 return iproute_modify(RTM_NEWROUTE
, NLM_F_EXCL
,
2320 if (matches(*argv
, "delete") == 0)
2321 return iproute_modify(RTM_DELROUTE
, 0,
2323 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
2324 || matches(*argv
, "lst") == 0)
2325 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_LIST
);
2326 if (matches(*argv
, "get") == 0)
2327 return iproute_get(argc
-1, argv
+1);
2328 if (matches(*argv
, "flush") == 0)
2329 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_FLUSH
);
2330 if (matches(*argv
, "save") == 0)
2331 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_SAVE
);
2332 if (matches(*argv
, "restore") == 0)
2333 return iproute_restore();
2334 if (matches(*argv
, "showdump") == 0)
2335 return iproute_showdump();
2336 if (matches(*argv
, "help") == 0)
2340 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv
);