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
& RTNH_F_TRAP
)
366 print_string(PRINT_ANY
, NULL
, "%s ", "trap");
367 if (flags
& RTM_F_NOTIFY
)
368 print_string(PRINT_ANY
, NULL
, "%s ", "notify");
369 if (flags
& RTNH_F_LINKDOWN
)
370 print_string(PRINT_ANY
, NULL
, "%s ", "linkdown");
371 if (flags
& RTNH_F_UNRESOLVED
)
372 print_string(PRINT_ANY
, NULL
, "%s ", "unresolved");
373 if (flags
& RTM_F_OFFLOAD
)
374 print_string(PRINT_ANY
, NULL
, "%s ", "rt_offload");
375 if (flags
& RTM_F_TRAP
)
376 print_string(PRINT_ANY
, NULL
, "%s ", "rt_trap");
378 close_json_array(PRINT_JSON
, NULL
);
381 static void print_rt_pref(FILE *fp
, unsigned int pref
)
385 case ICMPV6_ROUTER_PREF_LOW
:
386 print_string(PRINT_ANY
,
387 "pref", "pref %s", "low");
389 case ICMPV6_ROUTER_PREF_MEDIUM
:
390 print_string(PRINT_ANY
,
391 "pref", "pref %s", "medium");
393 case ICMPV6_ROUTER_PREF_HIGH
:
394 print_string(PRINT_ANY
,
395 "pref", "pref %s", "high");
398 print_uint(PRINT_ANY
,
403 void print_rta_if(FILE *fp
, const struct rtattr
*rta
, const char *prefix
)
405 const char *ifname
= ll_index_to_name(rta_getattr_u32(rta
));
407 if (is_json_context())
408 print_string(PRINT_JSON
, prefix
, NULL
, ifname
);
410 fprintf(fp
, "%s ", prefix
);
411 color_fprintf(fp
, COLOR_IFNAME
, "%s ", ifname
);
415 static void print_cache_flags(FILE *fp
, __u32 flags
)
417 json_writer_t
*jw
= get_json_writer();
421 jsonw_name(jw
, "cache");
422 jsonw_start_array(jw
);
424 fprintf(fp
, "%s cache ", _SL_
);
430 #define PRTFL(fl, flname) \
431 if (flags & RTCF_##fl) { \
432 flags &= ~RTCF_##fl; \
434 jsonw_string(jw, flname); \
436 fprintf(fp, "%s%s", flname, flags ? "," : "> "); \
439 PRTFL(LOCAL
, "local");
440 PRTFL(REJECT
, "reject");
441 PRTFL(MULTICAST
, "mc");
442 PRTFL(BROADCAST
, "brd");
443 PRTFL(DNAT
, "dst-nat");
444 PRTFL(SNAT
, "src-nat");
446 PRTFL(DIRECTDST
, "dst-direct");
447 PRTFL(DIRECTSRC
, "src-direct");
448 PRTFL(REDIRECTED
, "redirected");
449 PRTFL(DOREDIRECT
, "redirect");
450 PRTFL(FAST
, "fastroute");
451 PRTFL(NOTIFY
, "notify");
452 PRTFL(TPROXY
, "proxy");
456 print_hex(PRINT_ANY
, "flags", "%x>", flags
);
462 static void print_rta_cacheinfo(FILE *fp
, const struct rta_cacheinfo
*ci
)
469 if (ci
->rta_expires
!= 0)
470 print_int(PRINT_ANY
, "expires",
471 "expires %dsec ", ci
->rta_expires
/hz
);
472 if (ci
->rta_error
!= 0)
473 print_uint(PRINT_ANY
, "error",
474 "error %u ", ci
->rta_error
);
478 print_uint(PRINT_ANY
, "users",
479 "users %u ", ci
->rta_clntref
);
480 if (ci
->rta_used
!= 0)
481 print_uint(PRINT_ANY
, "used",
482 "used %u ", ci
->rta_used
);
483 if (ci
->rta_lastuse
!= 0)
484 print_uint(PRINT_ANY
, "age",
485 "age %usec ", ci
->rta_lastuse
/hz
);
488 print_0xhex(PRINT_ANY
, "ipid",
489 "ipid 0x%04llx ", ci
->rta_id
);
490 if (ci
->rta_ts
|| ci
->rta_tsage
) {
491 print_0xhex(PRINT_ANY
, "ts",
492 "ts 0x%llx", ci
->rta_ts
);
493 print_uint(PRINT_ANY
, "tsage",
494 "tsage %usec ", ci
->rta_tsage
);
498 static void print_rta_flow(FILE *fp
, const struct rtattr
*rta
)
500 __u32 to
= rta_getattr_u32(rta
);
501 __u32 from
= to
>> 16;
505 if (is_json_context()) {
506 open_json_object("flow");
509 print_string(PRINT_JSON
, "from", NULL
,
510 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
511 print_string(PRINT_JSON
, "to", NULL
,
512 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
515 fprintf(fp
, "realm%s ", from
? "s" : "");
518 print_string(PRINT_FP
, NULL
, "%s/",
519 rtnl_rtrealm_n2a(from
, b1
, sizeof(b1
)));
520 print_string(PRINT_FP
, NULL
, "%s ",
521 rtnl_rtrealm_n2a(to
, b1
, sizeof(b1
)));
525 static void print_rta_newdst(FILE *fp
, const struct rtmsg
*r
,
526 const struct rtattr
*rta
)
528 const char *newdst
= format_host_rta(r
->rtm_family
, rta
);
530 if (is_json_context())
531 print_string(PRINT_JSON
, "to", NULL
, newdst
);
533 fprintf(fp
, "as to ");
534 print_color_string(PRINT_FP
,
535 ifa_family_color(r
->rtm_family
),
536 NULL
, "%s ", newdst
);
540 void print_rta_gateway(FILE *fp
, unsigned char family
, const struct rtattr
*rta
)
542 const char *gateway
= format_host_rta(family
, rta
);
544 if (is_json_context())
545 print_string(PRINT_JSON
, "gateway", NULL
, gateway
);
548 print_color_string(PRINT_FP
,
549 ifa_family_color(family
),
550 NULL
, "%s ", gateway
);
554 static void print_rta_via(FILE *fp
, const struct rtattr
*rta
)
556 size_t len
= RTA_PAYLOAD(rta
) - 2;
557 const struct rtvia
*via
= RTA_DATA(rta
);
559 if (is_json_context()) {
560 open_json_object("via");
561 print_string(PRINT_JSON
, "family", NULL
,
562 family_name(via
->rtvia_family
));
563 print_string(PRINT_JSON
, "host", NULL
,
564 format_host(via
->rtvia_family
, len
,
568 print_string(PRINT_FP
, NULL
, "via %s ",
569 family_name(via
->rtvia_family
));
570 print_color_string(PRINT_FP
,
571 ifa_family_color(via
->rtvia_family
),
573 format_host(via
->rtvia_family
,
574 len
, via
->rtvia_addr
));
578 static void print_rta_metrics(FILE *fp
, const struct rtattr
*rta
)
580 struct rtattr
*mxrta
[RTAX_MAX
+1];
581 unsigned int mxlock
= 0;
584 open_json_array(PRINT_JSON
, "metrics");
585 open_json_object(NULL
);
587 parse_rtattr(mxrta
, RTAX_MAX
, RTA_DATA(rta
), RTA_PAYLOAD(rta
));
589 if (mxrta
[RTAX_LOCK
])
590 mxlock
= rta_getattr_u32(mxrta
[RTAX_LOCK
]);
592 for (i
= 2; i
<= RTAX_MAX
; i
++) {
595 if (mxrta
[i
] == NULL
&& !(mxlock
& (1 << i
)))
598 if (mxrta
[i
] != NULL
&& i
!= RTAX_CC_ALGO
)
599 val
= rta_getattr_u32(mxrta
[i
]);
601 if (i
== RTAX_HOPLIMIT
&& (int)val
== -1)
604 if (!is_json_context()) {
605 if (i
< sizeof(mx_names
)/sizeof(char *) && mx_names
[i
])
606 fprintf(fp
, "%s ", mx_names
[i
]);
608 fprintf(fp
, "metric %d ", i
);
611 fprintf(fp
, "lock ");
616 print_rtax_features(fp
, val
);
619 print_uint(PRINT_ANY
, mx_names
[i
], "%u ", val
);
627 else if (i
== RTAX_RTTVAR
)
630 if (is_json_context())
631 print_uint(PRINT_JSON
, mx_names
[i
],
635 fprintf(fp
, "%gs ", val
/1e3
);
637 fprintf(fp
, "%ums ", val
);
641 print_string(PRINT_ANY
, "congestion",
642 "%s ", rta_getattr_str(mxrta
[i
]));
648 close_json_array(PRINT_JSON
, NULL
);
651 static void print_rta_multipath(FILE *fp
, const struct rtmsg
*r
,
654 const struct rtnexthop
*nh
= RTA_DATA(rta
);
655 int len
= RTA_PAYLOAD(rta
);
658 open_json_array(PRINT_JSON
, "nexthops");
660 while (len
>= sizeof(*nh
)) {
661 struct rtattr
*tb
[RTA_MAX
+ 1];
663 if (nh
->rtnh_len
> len
)
666 open_json_object(NULL
);
668 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
669 r
->rtm_type
== RTN_MULTICAST
) {
671 print_string(PRINT_FP
, NULL
, "Oifs: ", NULL
);
674 print_string(PRINT_FP
, NULL
, " ", NULL
);
677 print_string(PRINT_FP
, NULL
, "%s\tnexthop ", _SL_
);
679 if (nh
->rtnh_len
> sizeof(*nh
)) {
680 parse_rtattr(tb
, RTA_MAX
, RTNH_DATA(nh
),
681 nh
->rtnh_len
- sizeof(*nh
));
688 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
690 print_rta_gateway(fp
, r
->rtm_family
,
693 print_rta_via(fp
, tb
[RTA_VIA
]);
695 print_rta_flow(fp
, tb
[RTA_FLOW
]);
698 if ((r
->rtm_flags
& RTM_F_CLONED
) &&
699 r
->rtm_type
== RTN_MULTICAST
) {
700 print_string(PRINT_ANY
, "dev",
701 "%s", ll_index_to_name(nh
->rtnh_ifindex
));
703 if (nh
->rtnh_hops
!= 1)
704 print_int(PRINT_ANY
, "ttl", "(ttl>%d)", nh
->rtnh_hops
);
706 print_string(PRINT_FP
, NULL
, " ", NULL
);
708 print_string(PRINT_ANY
, "dev",
709 "dev %s ", ll_index_to_name(nh
->rtnh_ifindex
));
711 if (r
->rtm_family
!= AF_MPLS
)
712 print_int(PRINT_ANY
, "weight",
713 "weight %d ", nh
->rtnh_hops
+ 1);
716 print_rt_flags(fp
, nh
->rtnh_flags
);
718 len
-= NLMSG_ALIGN(nh
->rtnh_len
);
723 close_json_array(PRINT_JSON
, NULL
);
726 int print_route(struct nlmsghdr
*n
, void *arg
)
728 FILE *fp
= (FILE *)arg
;
729 struct rtmsg
*r
= NLMSG_DATA(n
);
730 int len
= n
->nlmsg_len
;
731 struct rtattr
*tb
[RTA_MAX
+1];
732 int family
, color
, host_len
;
738 if (n
->nlmsg_type
!= RTM_NEWROUTE
&& n
->nlmsg_type
!= RTM_DELROUTE
) {
739 fprintf(stderr
, "Not a route: %08x %08x %08x\n",
740 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
743 if (filter
.flushb
&& n
->nlmsg_type
!= RTM_NEWROUTE
)
745 len
-= NLMSG_LENGTH(sizeof(*r
));
747 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
751 host_len
= af_bit_len(r
->rtm_family
);
753 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
754 table
= rtm_get_table(r
, tb
);
756 if (!filter_nlmsg(n
, tb
, host_len
))
762 if (NLMSG_ALIGN(filter
.flushp
) + n
->nlmsg_len
> filter
.flushe
) {
763 ret
= flush_update();
767 fn
= (struct nlmsghdr
*)(filter
.flushb
+ NLMSG_ALIGN(filter
.flushp
));
768 memcpy(fn
, n
, n
->nlmsg_len
);
769 fn
->nlmsg_type
= RTM_DELROUTE
;
770 fn
->nlmsg_flags
= NLM_F_REQUEST
;
771 fn
->nlmsg_seq
= ++rth
.seq
;
772 filter
.flushp
= (((char *)fn
) + n
->nlmsg_len
) - filter
.flushb
;
778 open_json_object(NULL
);
779 if (n
->nlmsg_type
== RTM_DELROUTE
)
780 print_bool(PRINT_ANY
, "deleted", "Deleted ", true);
782 if ((r
->rtm_type
!= RTN_UNICAST
|| show_details
> 0) &&
783 (!filter
.typemask
|| (filter
.typemask
& (1 << r
->rtm_type
))))
784 print_string(PRINT_ANY
, "type", "%s ",
785 rtnl_rtntype_n2a(r
->rtm_type
, b1
, sizeof(b1
)));
789 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
790 color
= ifa_family_color(family
);
792 if (r
->rtm_dst_len
!= host_len
) {
793 snprintf(b1
, sizeof(b1
),
794 "%s/%u", rt_addr_n2a_rta(family
, tb
[RTA_DST
]),
797 format_host_rta_r(family
, tb
[RTA_DST
],
801 } else if (r
->rtm_dst_len
) {
802 snprintf(b1
, sizeof(b1
), "0/%d ", r
->rtm_dst_len
);
804 strncpy(b1
, "default", sizeof(b1
));
806 print_color_string(PRINT_ANY
, color
,
810 family
= get_real_family(r
->rtm_type
, r
->rtm_family
);
811 color
= ifa_family_color(family
);
813 if (r
->rtm_src_len
!= host_len
) {
814 snprintf(b1
, sizeof(b1
),
816 rt_addr_n2a_rta(family
, tb
[RTA_SRC
]),
819 format_host_rta_r(family
, tb
[RTA_SRC
],
822 print_color_string(PRINT_ANY
, color
,
823 "from", "from %s ", b1
);
824 } else if (r
->rtm_src_len
) {
825 snprintf(b1
, sizeof(b1
), "0/%u", r
->rtm_src_len
);
827 print_string(PRINT_ANY
, "src", "from %s ", b1
);
831 print_uint(PRINT_ANY
, "nhid", "nhid %u ",
832 rta_getattr_u32(tb
[RTA_NH_ID
]));
835 print_rta_newdst(fp
, r
, tb
[RTA_NEWDST
]);
838 lwt_print_encap(fp
, tb
[RTA_ENCAP_TYPE
], tb
[RTA_ENCAP
]);
840 if (r
->rtm_tos
&& filter
.tosmask
!= -1) {
841 print_string(PRINT_ANY
, "tos", "tos %s ",
842 rtnl_dsfield_n2a(r
->rtm_tos
, b1
, sizeof(b1
)));
845 if (tb
[RTA_GATEWAY
] && filter
.rvia
.bitlen
!= host_len
)
846 print_rta_gateway(fp
, r
->rtm_family
, tb
[RTA_GATEWAY
]);
849 print_rta_via(fp
, tb
[RTA_VIA
]);
851 if (tb
[RTA_OIF
] && filter
.oifmask
!= -1)
852 print_rta_if(fp
, tb
[RTA_OIF
], "dev");
854 if (table
&& (table
!= RT_TABLE_MAIN
|| show_details
> 0) && !filter
.tb
)
855 print_string(PRINT_ANY
,
856 "table", "table %s ",
857 rtnl_rttable_n2a(table
, b1
, sizeof(b1
)));
859 if (!(r
->rtm_flags
& RTM_F_CLONED
)) {
860 if ((r
->rtm_protocol
!= RTPROT_BOOT
|| show_details
> 0) &&
861 filter
.protocolmask
!= -1)
862 print_string(PRINT_ANY
,
863 "protocol", "proto %s ",
864 rtnl_rtprot_n2a(r
->rtm_protocol
,
867 if ((r
->rtm_scope
!= RT_SCOPE_UNIVERSE
|| show_details
> 0) &&
868 filter
.scopemask
!= -1)
869 print_string(PRINT_ANY
,
870 "scope", "scope %s ",
871 rtnl_rtscope_n2a(r
->rtm_scope
,
875 if (tb
[RTA_PREFSRC
] && filter
.rprefsrc
.bitlen
!= host_len
) {
877 = rt_addr_n2a_rta(r
->rtm_family
, tb
[RTA_PREFSRC
]);
879 /* Do not use format_host(). It is our local addr
880 and symbolic name will not be useful.
882 if (is_json_context())
883 print_string(PRINT_JSON
, "prefsrc", NULL
, psrc
);
886 print_color_string(PRINT_FP
,
887 ifa_family_color(r
->rtm_family
),
893 if (tb
[RTA_PRIORITY
] && filter
.metricmask
!= -1)
894 print_uint(PRINT_ANY
, "metric", "metric %u ",
895 rta_getattr_u32(tb
[RTA_PRIORITY
]));
897 print_rt_flags(fp
, r
->rtm_flags
);
900 unsigned int mark
= rta_getattr_u32(tb
[RTA_MARK
]);
903 if (is_json_context())
904 print_uint(PRINT_JSON
, "mark", NULL
, mark
);
906 print_0xhex(PRINT_FP
, NULL
,
907 "mark 0x%llx ", mark
);
909 print_uint(PRINT_FP
, NULL
,
914 if (tb
[RTA_FLOW
] && filter
.realmmask
!= ~0U)
915 print_rta_flow(fp
, tb
[RTA_FLOW
]);
918 print_uint(PRINT_ANY
, "uid", "uid %u ",
919 rta_getattr_u32(tb
[RTA_UID
]));
921 if (r
->rtm_family
== AF_INET
) {
922 if (r
->rtm_flags
& RTM_F_CLONED
)
923 print_cache_flags(fp
, r
->rtm_flags
);
925 if (tb
[RTA_CACHEINFO
])
926 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
927 } else if (r
->rtm_family
== AF_INET6
) {
928 if (tb
[RTA_CACHEINFO
])
929 print_rta_cacheinfo(fp
, RTA_DATA(tb
[RTA_CACHEINFO
]));
933 print_rta_metrics(fp
, tb
[RTA_METRICS
]);
935 if (tb
[RTA_IIF
] && filter
.iifmask
!= -1)
936 print_rta_if(fp
, tb
[RTA_IIF
], "iif");
939 print_rt_pref(fp
, rta_getattr_u8(tb
[RTA_PREF
]));
941 if (tb
[RTA_TTL_PROPAGATE
]) {
942 bool propagate
= rta_getattr_u8(tb
[RTA_TTL_PROPAGATE
]);
944 if (is_json_context())
945 print_bool(PRINT_JSON
, "ttl-propogate", NULL
,
948 print_string(PRINT_FP
, NULL
,
950 propagate
? "enabled" : "disabled");
953 if (tb
[RTA_MULTIPATH
])
954 print_rta_multipath(fp
, r
, tb
[RTA_MULTIPATH
]);
956 /* If you are adding new route RTA_XXXX then place it above
957 * the RTA_MULTIPATH else it will appear that the last nexthop
958 * in the ECMP has new attributes
961 print_string(PRINT_FP
, NULL
, "\n", NULL
);
967 static int parse_one_nh(struct nlmsghdr
*n
, struct rtmsg
*r
,
968 struct rtattr
*rta
, size_t len
, struct rtnexthop
*rtnh
,
969 int *argcp
, char ***argvp
)
972 char **argv
= *argvp
;
974 while (++argv
, --argc
> 0) {
975 if (strcmp(*argv
, "via") == 0) {
980 family
= read_family(*argv
);
981 if (family
== AF_UNSPEC
)
982 family
= r
->rtm_family
;
985 get_addr(&addr
, *argv
, family
);
986 if (r
->rtm_family
== AF_UNSPEC
)
987 r
->rtm_family
= addr
.family
;
988 if (addr
.family
== r
->rtm_family
) {
989 if (rta_addattr_l(rta
, len
, RTA_GATEWAY
,
990 &addr
.data
, addr
.bytelen
))
992 rtnh
->rtnh_len
+= sizeof(struct rtattr
)
995 if (rta_addattr_l(rta
, len
, RTA_VIA
,
996 &addr
.family
, addr
.bytelen
+ 2))
998 rtnh
->rtnh_len
+= RTA_SPACE(addr
.bytelen
+ 2);
1000 } else if (strcmp(*argv
, "dev") == 0) {
1002 rtnh
->rtnh_ifindex
= ll_name_to_index(*argv
);
1003 if (!rtnh
->rtnh_ifindex
)
1004 return nodev(*argv
);
1005 } else if (strcmp(*argv
, "weight") == 0) {
1009 if (get_unsigned(&w
, *argv
, 0) || w
== 0 || w
> 256)
1010 invarg("\"weight\" is invalid\n", *argv
);
1011 rtnh
->rtnh_hops
= w
- 1;
1012 } else if (strcmp(*argv
, "onlink") == 0) {
1013 rtnh
->rtnh_flags
|= RTNH_F_ONLINK
;
1014 } else if (matches(*argv
, "realms") == 0) {
1018 if (get_rt_realms_or_raw(&realm
, *argv
))
1019 invarg("\"realm\" value is invalid\n", *argv
);
1020 if (rta_addattr32(rta
, len
, RTA_FLOW
, realm
))
1022 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + 4;
1023 } else if (strcmp(*argv
, "encap") == 0) {
1024 int old_len
= rta
->rta_len
;
1026 if (lwt_parse_encap(rta
, len
, &argc
, &argv
,
1027 RTA_ENCAP
, RTA_ENCAP_TYPE
))
1029 rtnh
->rtnh_len
+= rta
->rta_len
- old_len
;
1030 } else if (strcmp(*argv
, "as") == 0) {
1034 if (strcmp(*argv
, "to") == 0)
1036 get_addr(&addr
, *argv
, r
->rtm_family
);
1037 if (rta_addattr_l(rta
, len
, RTA_NEWDST
,
1038 &addr
.data
, addr
.bytelen
))
1040 rtnh
->rtnh_len
+= sizeof(struct rtattr
) + addr
.bytelen
;
1049 static int parse_nexthops(struct nlmsghdr
*n
, struct rtmsg
*r
,
1050 int argc
, char **argv
)
1053 struct rtattr
*rta
= (void *)buf
;
1054 struct rtnexthop
*rtnh
;
1056 rta
->rta_type
= RTA_MULTIPATH
;
1057 rta
->rta_len
= RTA_LENGTH(0);
1058 rtnh
= RTA_DATA(rta
);
1061 if (strcmp(*argv
, "nexthop") != 0) {
1062 fprintf(stderr
, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv
);
1066 fprintf(stderr
, "Error: unexpected end of line after \"nexthop\"\n");
1069 memset(rtnh
, 0, sizeof(*rtnh
));
1070 rtnh
->rtnh_len
= sizeof(*rtnh
);
1071 rta
->rta_len
+= rtnh
->rtnh_len
;
1072 if (parse_one_nh(n
, r
, rta
, 4096, rtnh
, &argc
, &argv
)) {
1073 fprintf(stderr
, "Error: cannot parse nexthop\n");
1076 rtnh
= RTNH_NEXT(rtnh
);
1079 if (rta
->rta_len
> RTA_LENGTH(0))
1080 return addattr_l(n
, 4096, RTA_MULTIPATH
,
1081 RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1085 static int iproute_modify(int cmd
, unsigned int flags
, int argc
, char **argv
)
1092 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1093 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
1094 .n
.nlmsg_type
= cmd
,
1095 .r
.rtm_family
= preferred_family
,
1096 .r
.rtm_table
= RT_TABLE_MAIN
,
1097 .r
.rtm_scope
= RT_SCOPE_NOWHERE
,
1100 struct rtattr
*mxrta
= (void *)mxbuf
;
1101 unsigned int mxlock
= 0;
1112 if (cmd
!= RTM_DELROUTE
) {
1113 req
.r
.rtm_protocol
= RTPROT_BOOT
;
1114 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1115 req
.r
.rtm_type
= RTN_UNICAST
;
1118 mxrta
->rta_type
= RTA_METRICS
;
1119 mxrta
->rta_len
= RTA_LENGTH(0);
1122 if (strcmp(*argv
, "src") == 0) {
1126 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1127 if (req
.r
.rtm_family
== AF_UNSPEC
)
1128 req
.r
.rtm_family
= addr
.family
;
1129 addattr_l(&req
.n
, sizeof(req
),
1130 RTA_PREFSRC
, &addr
.data
, addr
.bytelen
);
1131 } else if (strcmp(*argv
, "as") == 0) {
1135 if (strcmp(*argv
, "to") == 0) {
1138 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
1139 if (req
.r
.rtm_family
== AF_UNSPEC
)
1140 req
.r
.rtm_family
= addr
.family
;
1141 addattr_l(&req
.n
, sizeof(req
),
1142 RTA_NEWDST
, &addr
.data
, addr
.bytelen
);
1143 } else if (strcmp(*argv
, "via") == 0) {
1148 invarg("use nexthop syntax to specify multiple via\n",
1153 family
= read_family(*argv
);
1154 if (family
== AF_UNSPEC
)
1155 family
= req
.r
.rtm_family
;
1158 get_addr(&addr
, *argv
, family
);
1159 if (req
.r
.rtm_family
== AF_UNSPEC
)
1160 req
.r
.rtm_family
= addr
.family
;
1161 if (addr
.family
== req
.r
.rtm_family
)
1162 addattr_l(&req
.n
, sizeof(req
), RTA_GATEWAY
,
1163 &addr
.data
, addr
.bytelen
);
1165 addattr_l(&req
.n
, sizeof(req
), RTA_VIA
,
1166 &addr
.family
, addr
.bytelen
+2);
1167 } else if (strcmp(*argv
, "from") == 0) {
1171 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1172 if (req
.r
.rtm_family
== AF_UNSPEC
)
1173 req
.r
.rtm_family
= addr
.family
;
1175 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
, &addr
.data
, addr
.bytelen
);
1176 req
.r
.rtm_src_len
= addr
.bitlen
;
1177 } else if (strcmp(*argv
, "tos") == 0 ||
1178 matches(*argv
, "dsfield") == 0) {
1182 if (rtnl_dsfield_a2n(&tos
, *argv
))
1183 invarg("\"tos\" value is invalid\n", *argv
);
1184 req
.r
.rtm_tos
= tos
;
1185 } else if (strcmp(*argv
, "expires") == 0) {
1189 if (get_u32(&expires
, *argv
, 0))
1190 invarg("\"expires\" value is invalid\n", *argv
);
1191 addattr32(&req
.n
, sizeof(req
), RTA_EXPIRES
, expires
);
1192 } else if (matches(*argv
, "metric") == 0 ||
1193 matches(*argv
, "priority") == 0 ||
1194 strcmp(*argv
, "preference") == 0) {
1198 if (get_u32(&metric
, *argv
, 0))
1199 invarg("\"metric\" value is invalid\n", *argv
);
1200 addattr32(&req
.n
, sizeof(req
), RTA_PRIORITY
, metric
);
1201 } else if (strcmp(*argv
, "scope") == 0) {
1205 if (rtnl_rtscope_a2n(&scope
, *argv
))
1206 invarg("invalid \"scope\" value\n", *argv
);
1207 req
.r
.rtm_scope
= scope
;
1209 } else if (strcmp(*argv
, "mtu") == 0) {
1213 if (strcmp(*argv
, "lock") == 0) {
1214 mxlock
|= (1<<RTAX_MTU
);
1217 if (get_unsigned(&mtu
, *argv
, 0))
1218 invarg("\"mtu\" value is invalid\n", *argv
);
1219 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_MTU
, mtu
);
1220 } else if (strcmp(*argv
, "hoplimit") == 0) {
1221 unsigned int hoplimit
;
1224 if (strcmp(*argv
, "lock") == 0) {
1225 mxlock
|= (1<<RTAX_HOPLIMIT
);
1228 if (get_unsigned(&hoplimit
, *argv
, 0) || hoplimit
> 255)
1229 invarg("\"hoplimit\" value is invalid\n", *argv
);
1230 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_HOPLIMIT
, hoplimit
);
1231 } else if (strcmp(*argv
, "advmss") == 0) {
1235 if (strcmp(*argv
, "lock") == 0) {
1236 mxlock
|= (1<<RTAX_ADVMSS
);
1239 if (get_unsigned(&mss
, *argv
, 0))
1240 invarg("\"mss\" value is invalid\n", *argv
);
1241 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_ADVMSS
, mss
);
1242 } else if (matches(*argv
, "reordering") == 0) {
1246 if (strcmp(*argv
, "lock") == 0) {
1247 mxlock
|= (1<<RTAX_REORDERING
);
1250 if (get_unsigned(&reord
, *argv
, 0))
1251 invarg("\"reordering\" value is invalid\n", *argv
);
1252 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_REORDERING
, reord
);
1253 } else if (strcmp(*argv
, "rtt") == 0) {
1257 if (strcmp(*argv
, "lock") == 0) {
1258 mxlock
|= (1<<RTAX_RTT
);
1261 if (get_time_rtt(&rtt
, *argv
, &raw
))
1262 invarg("\"rtt\" value is invalid\n", *argv
);
1263 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTT
,
1264 (raw
) ? rtt
: rtt
* 8);
1265 } else if (strcmp(*argv
, "rto_min") == 0) {
1266 unsigned int rto_min
;
1269 mxlock
|= (1<<RTAX_RTO_MIN
);
1270 if (get_time_rtt(&rto_min
, *argv
, &raw
))
1271 invarg("\"rto_min\" value is invalid\n",
1273 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTO_MIN
,
1275 } else if (matches(*argv
, "window") == 0) {
1279 if (strcmp(*argv
, "lock") == 0) {
1280 mxlock
|= (1<<RTAX_WINDOW
);
1283 if (get_unsigned(&win
, *argv
, 0))
1284 invarg("\"window\" value is invalid\n", *argv
);
1285 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_WINDOW
, win
);
1286 } else if (matches(*argv
, "cwnd") == 0) {
1290 if (strcmp(*argv
, "lock") == 0) {
1291 mxlock
|= (1<<RTAX_CWND
);
1294 if (get_unsigned(&win
, *argv
, 0))
1295 invarg("\"cwnd\" value is invalid\n", *argv
);
1296 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_CWND
, win
);
1297 } else if (matches(*argv
, "initcwnd") == 0) {
1301 if (strcmp(*argv
, "lock") == 0) {
1302 mxlock
|= (1<<RTAX_INITCWND
);
1305 if (get_unsigned(&win
, *argv
, 0))
1306 invarg("\"initcwnd\" value is invalid\n", *argv
);
1307 rta_addattr32(mxrta
, sizeof(mxbuf
),
1308 RTAX_INITCWND
, win
);
1309 } else if (matches(*argv
, "initrwnd") == 0) {
1313 if (strcmp(*argv
, "lock") == 0) {
1314 mxlock
|= (1<<RTAX_INITRWND
);
1317 if (get_unsigned(&win
, *argv
, 0))
1318 invarg("\"initrwnd\" value is invalid\n", *argv
);
1319 rta_addattr32(mxrta
, sizeof(mxbuf
),
1320 RTAX_INITRWND
, win
);
1321 } else if (matches(*argv
, "features") == 0) {
1322 unsigned int features
= 0;
1327 if (strcmp(*argv
, "ecn") == 0)
1328 features
|= RTAX_FEATURE_ECN
;
1330 invarg("\"features\" value not valid\n", *argv
);
1334 rta_addattr32(mxrta
, sizeof(mxbuf
),
1335 RTAX_FEATURES
, features
);
1336 } else if (matches(*argv
, "quickack") == 0) {
1337 unsigned int quickack
;
1340 if (get_unsigned(&quickack
, *argv
, 0))
1341 invarg("\"quickack\" value is invalid\n", *argv
);
1342 if (quickack
!= 1 && quickack
!= 0)
1343 invarg("\"quickack\" value should be 0 or 1\n", *argv
);
1344 rta_addattr32(mxrta
, sizeof(mxbuf
),
1345 RTAX_QUICKACK
, quickack
);
1346 } else if (matches(*argv
, "congctl") == 0) {
1348 if (strcmp(*argv
, "lock") == 0) {
1349 mxlock
|= 1 << RTAX_CC_ALGO
;
1352 rta_addattr_l(mxrta
, sizeof(mxbuf
), RTAX_CC_ALGO
, *argv
,
1354 } else if (matches(*argv
, "rttvar") == 0) {
1358 if (strcmp(*argv
, "lock") == 0) {
1359 mxlock
|= (1<<RTAX_RTTVAR
);
1362 if (get_time_rtt(&win
, *argv
, &raw
))
1363 invarg("\"rttvar\" value is invalid\n", *argv
);
1364 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_RTTVAR
,
1365 (raw
) ? win
: win
* 4);
1366 } else if (matches(*argv
, "ssthresh") == 0) {
1370 if (strcmp(*argv
, "lock") == 0) {
1371 mxlock
|= (1<<RTAX_SSTHRESH
);
1374 if (get_unsigned(&win
, *argv
, 0))
1375 invarg("\"ssthresh\" value is invalid\n", *argv
);
1376 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_SSTHRESH
, win
);
1377 } else if (matches(*argv
, "realms") == 0) {
1381 if (get_rt_realms_or_raw(&realm
, *argv
))
1382 invarg("\"realm\" value is invalid\n", *argv
);
1383 addattr32(&req
.n
, sizeof(req
), RTA_FLOW
, realm
);
1384 } else if (strcmp(*argv
, "onlink") == 0) {
1385 req
.r
.rtm_flags
|= RTNH_F_ONLINK
;
1386 } else if (strcmp(*argv
, "nexthop") == 0) {
1389 } else if (!strcmp(*argv
, "nhid")) {
1391 if (get_u32(&nhid
, *argv
, 0))
1392 invarg("\"id\" value is invalid\n", *argv
);
1393 addattr32(&req
.n
, sizeof(req
), RTA_NH_ID
, nhid
);
1394 } else if (matches(*argv
, "protocol") == 0) {
1398 if (rtnl_rtprot_a2n(&prot
, *argv
))
1399 invarg("\"protocol\" value is invalid\n", *argv
);
1400 req
.r
.rtm_protocol
= prot
;
1401 } else if (matches(*argv
, "table") == 0) {
1405 if (rtnl_rttable_a2n(&tid
, *argv
))
1406 invarg("\"table\" value is invalid\n", *argv
);
1408 req
.r
.rtm_table
= tid
;
1410 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1411 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1414 } else if (matches(*argv
, "vrf") == 0) {
1418 tid
= ipvrf_get_table(*argv
);
1420 invarg("Invalid VRF\n", *argv
);
1422 req
.r
.rtm_table
= tid
;
1424 req
.r
.rtm_table
= RT_TABLE_UNSPEC
;
1425 addattr32(&req
.n
, sizeof(req
), RTA_TABLE
, tid
);
1428 } else if (strcmp(*argv
, "dev") == 0 ||
1429 strcmp(*argv
, "oif") == 0) {
1432 } else if (matches(*argv
, "pref") == 0) {
1436 if (strcmp(*argv
, "low") == 0)
1437 pref
= ICMPV6_ROUTER_PREF_LOW
;
1438 else if (strcmp(*argv
, "medium") == 0)
1439 pref
= ICMPV6_ROUTER_PREF_MEDIUM
;
1440 else if (strcmp(*argv
, "high") == 0)
1441 pref
= ICMPV6_ROUTER_PREF_HIGH
;
1442 else if (get_u8(&pref
, *argv
, 0))
1443 invarg("\"pref\" value is invalid\n", *argv
);
1444 addattr8(&req
.n
, sizeof(req
), RTA_PREF
, pref
);
1445 } else if (strcmp(*argv
, "encap") == 0) {
1447 struct rtattr
*rta
= (void *)buf
;
1449 rta
->rta_type
= RTA_ENCAP
;
1450 rta
->rta_len
= RTA_LENGTH(0);
1452 lwt_parse_encap(rta
, sizeof(buf
), &argc
, &argv
,
1453 RTA_ENCAP
, RTA_ENCAP_TYPE
);
1455 if (rta
->rta_len
> RTA_LENGTH(0))
1456 addraw_l(&req
.n
, 1024
1457 , RTA_DATA(rta
), RTA_PAYLOAD(rta
));
1458 } else if (strcmp(*argv
, "ttl-propagate") == 0) {
1462 if (matches(*argv
, "enabled") == 0)
1464 else if (matches(*argv
, "disabled") == 0)
1467 invarg("\"ttl-propagate\" value is invalid\n",
1470 addattr8(&req
.n
, sizeof(req
), RTA_TTL_PROPAGATE
,
1472 } else if (matches(*argv
, "fastopen_no_cookie") == 0) {
1473 unsigned int fastopen_no_cookie
;
1476 if (get_unsigned(&fastopen_no_cookie
, *argv
, 0))
1477 invarg("\"fastopen_no_cookie\" value is invalid\n", *argv
);
1478 if (fastopen_no_cookie
!= 1 && fastopen_no_cookie
!= 0)
1479 invarg("\"fastopen_no_cookie\" value should be 0 or 1\n", *argv
);
1480 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_FASTOPEN_NO_COOKIE
, fastopen_no_cookie
);
1485 if (strcmp(*argv
, "to") == 0) {
1488 if ((**argv
< '0' || **argv
> '9') &&
1489 rtnl_rtntype_a2n(&type
, *argv
) == 0) {
1491 req
.r
.rtm_type
= type
;
1495 if (matches(*argv
, "help") == 0)
1498 duparg2("to", *argv
);
1499 get_prefix(&dst
, *argv
, req
.r
.rtm_family
);
1500 if (req
.r
.rtm_family
== AF_UNSPEC
)
1501 req
.r
.rtm_family
= dst
.family
;
1502 req
.r
.rtm_dst_len
= dst
.bitlen
;
1505 addattr_l(&req
.n
, sizeof(req
),
1506 RTA_DST
, &dst
.data
, dst
.bytelen
);
1515 int idx
= ll_name_to_index(d
);
1519 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
1522 if (mxrta
->rta_len
> RTA_LENGTH(0)) {
1524 rta_addattr32(mxrta
, sizeof(mxbuf
), RTAX_LOCK
, mxlock
);
1525 addattr_l(&req
.n
, sizeof(req
), RTA_METRICS
, RTA_DATA(mxrta
), RTA_PAYLOAD(mxrta
));
1528 if (nhs_ok
&& parse_nexthops(&req
.n
, &req
.r
, argc
, argv
))
1531 if (req
.r
.rtm_family
== AF_UNSPEC
)
1532 req
.r
.rtm_family
= AF_INET
;
1535 if (req
.r
.rtm_type
== RTN_LOCAL
||
1536 req
.r
.rtm_type
== RTN_BROADCAST
||
1537 req
.r
.rtm_type
== RTN_NAT
||
1538 req
.r
.rtm_type
== RTN_ANYCAST
)
1539 req
.r
.rtm_table
= RT_TABLE_LOCAL
;
1542 if (req
.r
.rtm_family
== AF_INET6
||
1543 req
.r
.rtm_family
== AF_MPLS
)
1544 req
.r
.rtm_scope
= RT_SCOPE_UNIVERSE
;
1545 else if (req
.r
.rtm_type
== RTN_LOCAL
||
1546 req
.r
.rtm_type
== RTN_NAT
)
1547 req
.r
.rtm_scope
= RT_SCOPE_HOST
;
1548 else if (req
.r
.rtm_type
== RTN_BROADCAST
||
1549 req
.r
.rtm_type
== RTN_MULTICAST
||
1550 req
.r
.rtm_type
== RTN_ANYCAST
)
1551 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1552 else if (req
.r
.rtm_type
== RTN_UNICAST
||
1553 req
.r
.rtm_type
== RTN_UNSPEC
) {
1554 if (cmd
== RTM_DELROUTE
)
1555 req
.r
.rtm_scope
= RT_SCOPE_NOWHERE
;
1556 else if (!gw_ok
&& !nhs_ok
&& !nhid
)
1557 req
.r
.rtm_scope
= RT_SCOPE_LINK
;
1561 if (!type_ok
&& req
.r
.rtm_family
== AF_MPLS
)
1562 req
.r
.rtm_type
= RTN_UNICAST
;
1564 if (rtnl_talk(&rth
, &req
.n
, NULL
) < 0)
1570 static int iproute_flush_cache(void)
1572 #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
1575 int flush_fd
= open(ROUTE_FLUSH_PATH
, O_WRONLY
);
1576 char *buffer
= "-1";
1579 fprintf(stderr
, "Cannot open \"%s\": %s\n",
1580 ROUTE_FLUSH_PATH
, strerror(errno
));
1584 len
= strlen(buffer
);
1586 if ((write(flush_fd
, (void *)buffer
, len
)) < len
) {
1587 fprintf(stderr
, "Cannot flush routing cache\n");
1595 static __u32 route_dump_magic
= 0x45311224;
1597 static int save_route(struct nlmsghdr
*n
, void *arg
)
1600 int len
= n
->nlmsg_len
;
1601 struct rtmsg
*r
= NLMSG_DATA(n
);
1602 struct rtattr
*tb
[RTA_MAX
+1];
1605 host_len
= af_bit_len(r
->rtm_family
);
1606 len
-= NLMSG_LENGTH(sizeof(*r
));
1607 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
1609 if (!filter_nlmsg(n
, tb
, host_len
))
1612 ret
= write(STDOUT_FILENO
, n
, n
->nlmsg_len
);
1613 if ((ret
> 0) && (ret
!= n
->nlmsg_len
)) {
1614 fprintf(stderr
, "Short write while saving nlmsg\n");
1618 return ret
== n
->nlmsg_len
? 0 : ret
;
1621 static int save_route_prep(void)
1625 if (isatty(STDOUT_FILENO
)) {
1626 fprintf(stderr
, "Not sending a binary stream to stdout\n");
1630 ret
= write(STDOUT_FILENO
, &route_dump_magic
, sizeof(route_dump_magic
));
1631 if (ret
!= sizeof(route_dump_magic
)) {
1632 fprintf(stderr
, "Can't write magic to dump file\n");
1639 static int iproute_dump_filter(struct nlmsghdr
*nlh
, int reqlen
)
1641 struct rtmsg
*rtm
= NLMSG_DATA(nlh
);
1644 rtm
->rtm_protocol
= filter
.protocol
;
1646 rtm
->rtm_flags
|= RTM_F_CLONED
;
1649 err
= addattr32(nlh
, reqlen
, RTA_TABLE
, filter
.tb
);
1655 err
= addattr32(nlh
, reqlen
, RTA_OIF
, filter
.oif
);
1663 static int iproute_flush(int family
, rtnl_filter_t filter_fn
)
1665 time_t start
= time(0);
1666 char flushb
[4096-512];
1670 if (filter
.cloned
) {
1671 if (family
!= AF_INET6
) {
1672 iproute_flush_cache();
1674 printf("*** IPv4 routing cache is flushed.\n");
1676 if (family
== AF_INET
)
1680 filter
.flushb
= flushb
;
1682 filter
.flushe
= sizeof(flushb
);
1685 if (rtnl_routedump_req(&rth
, family
, iproute_dump_filter
) < 0) {
1686 perror("Cannot send dump request");
1690 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1691 fprintf(stderr
, "Flush terminated\n");
1694 if (filter
.flushed
== 0) {
1697 (!filter
.cloned
|| family
== AF_INET6
))
1698 printf("Nothing to flush.\n");
1700 printf("*** Flush is complete after %d round%s ***\n",
1701 round
, round
> 1 ? "s" : "");
1707 ret
= flush_update();
1711 if (time(0) - start
> 30) {
1712 printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
1713 (long)(time(0) - start
), filter
.flushed
);
1718 printf("\n*** Round %d, deleting %d entries ***\n",
1719 round
, filter
.flushed
);
1725 static int iproute_list_flush_or_save(int argc
, char **argv
, int action
)
1727 int dump_family
= preferred_family
;
1730 unsigned int mark
= 0;
1731 rtnl_filter_t filter_fn
;
1733 if (action
== IPROUTE_SAVE
) {
1734 if (save_route_prep())
1737 filter_fn
= save_route
;
1739 filter_fn
= print_route
;
1741 iproute_reset_filter(0);
1742 filter
.tb
= RT_TABLE_MAIN
;
1744 if ((action
== IPROUTE_FLUSH
) && argc
<= 0) {
1745 fprintf(stderr
, "\"ip route flush\" requires arguments.\n");
1750 if (matches(*argv
, "table") == 0) {
1754 if (rtnl_rttable_a2n(&tid
, *argv
)) {
1755 if (strcmp(*argv
, "all") == 0) {
1757 } else if (strcmp(*argv
, "cache") == 0) {
1759 } else if (strcmp(*argv
, "help") == 0) {
1762 invarg("table id value is invalid\n", *argv
);
1766 } else if (matches(*argv
, "vrf") == 0) {
1770 tid
= ipvrf_get_table(*argv
);
1772 invarg("Invalid VRF\n", *argv
);
1774 filter
.typemask
= ~(1 << RTN_LOCAL
| 1<<RTN_BROADCAST
);
1775 } else if (matches(*argv
, "cached") == 0 ||
1776 matches(*argv
, "cloned") == 0) {
1778 } else if (strcmp(*argv
, "tos") == 0 ||
1779 matches(*argv
, "dsfield") == 0) {
1783 if (rtnl_dsfield_a2n(&tos
, *argv
))
1784 invarg("TOS value is invalid\n", *argv
);
1786 filter
.tosmask
= -1;
1787 } else if (matches(*argv
, "protocol") == 0) {
1791 filter
.protocolmask
= -1;
1792 if (rtnl_rtprot_a2n(&prot
, *argv
)) {
1793 if (strcmp(*argv
, "all") != 0)
1794 invarg("invalid \"protocol\"\n", *argv
);
1796 filter
.protocolmask
= 0;
1798 filter
.protocol
= prot
;
1799 } else if (matches(*argv
, "scope") == 0) {
1803 filter
.scopemask
= -1;
1804 if (rtnl_rtscope_a2n(&scope
, *argv
)) {
1805 if (strcmp(*argv
, "all") != 0)
1806 invarg("invalid \"scope\"\n", *argv
);
1807 scope
= RT_SCOPE_NOWHERE
;
1808 filter
.scopemask
= 0;
1810 filter
.scope
= scope
;
1811 } else if (matches(*argv
, "type") == 0) {
1815 if (rtnl_rtntype_a2n(&type
, *argv
))
1816 invarg("node type value is invalid\n", *argv
);
1817 filter
.typemask
= (1<<type
);
1818 } else if (strcmp(*argv
, "dev") == 0 ||
1819 strcmp(*argv
, "oif") == 0) {
1822 } else if (strcmp(*argv
, "iif") == 0) {
1825 } else if (strcmp(*argv
, "mark") == 0) {
1827 if (get_unsigned(&mark
, *argv
, 0))
1828 invarg("invalid mark value", *argv
);
1829 filter
.markmask
= -1;
1830 } else if (matches(*argv
, "metric") == 0 ||
1831 matches(*argv
, "priority") == 0 ||
1832 strcmp(*argv
, "preference") == 0) {
1836 if (get_u32(&metric
, *argv
, 0))
1837 invarg("\"metric\" value is invalid\n", *argv
);
1838 filter
.metric
= metric
;
1839 filter
.metricmask
= -1;
1840 } else if (strcmp(*argv
, "via") == 0) {
1844 family
= read_family(*argv
);
1845 if (family
== AF_UNSPEC
)
1846 family
= dump_family
;
1849 get_prefix(&filter
.rvia
, *argv
, family
);
1850 } else if (strcmp(*argv
, "src") == 0) {
1852 get_prefix(&filter
.rprefsrc
, *argv
, dump_family
);
1853 } else if (matches(*argv
, "realms") == 0) {
1857 if (get_rt_realms_or_raw(&realm
, *argv
))
1858 invarg("invalid realms\n", *argv
);
1859 filter
.realm
= realm
;
1860 filter
.realmmask
= ~0U;
1861 if ((filter
.realm
&0xFFFF) == 0 &&
1862 (*argv
)[strlen(*argv
) - 1] == '/')
1863 filter
.realmmask
&= ~0xFFFF;
1864 if ((filter
.realm
&0xFFFF0000U
) == 0 &&
1865 (strchr(*argv
, '/') == NULL
||
1867 filter
.realmmask
&= ~0xFFFF0000U
;
1868 } else if (matches(*argv
, "from") == 0) {
1870 if (matches(*argv
, "root") == 0) {
1872 get_prefix(&filter
.rsrc
, *argv
, dump_family
);
1873 } else if (matches(*argv
, "match") == 0) {
1875 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1877 if (matches(*argv
, "exact") == 0) {
1880 get_prefix(&filter
.msrc
, *argv
, dump_family
);
1881 filter
.rsrc
= filter
.msrc
;
1884 if (matches(*argv
, "to") == 0) {
1887 if (matches(*argv
, "root") == 0) {
1889 get_prefix(&filter
.rdst
, *argv
, dump_family
);
1890 } else if (matches(*argv
, "match") == 0) {
1892 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1894 if (matches(*argv
, "exact") == 0) {
1897 get_prefix(&filter
.mdst
, *argv
, dump_family
);
1898 filter
.rdst
= filter
.mdst
;
1904 if (dump_family
== AF_UNSPEC
&& filter
.tb
)
1905 dump_family
= AF_INET
;
1911 idx
= ll_name_to_index(id
);
1915 filter
.iifmask
= -1;
1918 idx
= ll_name_to_index(od
);
1922 filter
.oifmask
= -1;
1927 if (action
== IPROUTE_FLUSH
)
1928 return iproute_flush(dump_family
, filter_fn
);
1930 if (rtnl_routedump_req(&rth
, dump_family
, iproute_dump_filter
) < 0) {
1931 perror("Cannot send dump request");
1937 if (rtnl_dump_filter(&rth
, filter_fn
, stdout
) < 0) {
1938 fprintf(stderr
, "Dump terminated\n");
1948 static int iproute_get(int argc
, char **argv
)
1955 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct rtmsg
)),
1956 .n
.nlmsg_flags
= NLM_F_REQUEST
,
1957 .n
.nlmsg_type
= RTM_GETROUTE
,
1958 .r
.rtm_family
= preferred_family
,
1962 struct nlmsghdr
*answer
;
1966 unsigned int mark
= 0;
1967 bool address_found
= false;
1969 iproute_reset_filter(0);
1973 if (strcmp(*argv
, "tos") == 0 ||
1974 matches(*argv
, "dsfield") == 0) {
1978 if (rtnl_dsfield_a2n(&tos
, *argv
))
1979 invarg("TOS value is invalid\n", *argv
);
1980 req
.r
.rtm_tos
= tos
;
1981 } else if (matches(*argv
, "from") == 0) {
1985 if (matches(*argv
, "help") == 0)
1988 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
1989 if (req
.r
.rtm_family
== AF_UNSPEC
)
1990 req
.r
.rtm_family
= addr
.family
;
1992 addattr_l(&req
.n
, sizeof(req
), RTA_SRC
,
1993 &addr
.data
, addr
.bytelen
);
1994 req
.r
.rtm_src_len
= addr
.bitlen
;
1995 } else if (matches(*argv
, "iif") == 0) {
1998 } else if (matches(*argv
, "mark") == 0) {
2000 if (get_unsigned(&mark
, *argv
, 0))
2001 invarg("invalid mark value", *argv
);
2002 } else if (matches(*argv
, "oif") == 0 ||
2003 strcmp(*argv
, "dev") == 0) {
2006 } else if (matches(*argv
, "notify") == 0) {
2007 req
.r
.rtm_flags
|= RTM_F_NOTIFY
;
2008 } else if (matches(*argv
, "connected") == 0) {
2010 } else if (matches(*argv
, "vrf") == 0) {
2012 if (!name_is_vrf(*argv
))
2013 invarg("Invalid VRF\n", *argv
);
2015 } else if (matches(*argv
, "uid") == 0) {
2019 if (get_unsigned(&uid
, *argv
, 0))
2020 invarg("invalid UID\n", *argv
);
2021 addattr32(&req
.n
, sizeof(req
), RTA_UID
, uid
);
2022 } else if (matches(*argv
, "fibmatch") == 0) {
2024 } else if (strcmp(*argv
, "as") == 0) {
2028 if (strcmp(*argv
, "to") == 0)
2030 get_addr(&addr
, *argv
, req
.r
.rtm_family
);
2031 if (req
.r
.rtm_family
== AF_UNSPEC
)
2032 req
.r
.rtm_family
= addr
.family
;
2033 addattr_l(&req
.n
, sizeof(req
), RTA_NEWDST
,
2034 &addr
.data
, addr
.bytelen
);
2035 } else if (matches(*argv
, "sport") == 0) {
2039 if (get_be16(&sport
, *argv
, 0))
2040 invarg("invalid sport\n", *argv
);
2041 addattr16(&req
.n
, sizeof(req
), RTA_SPORT
, sport
);
2042 } else if (matches(*argv
, "dport") == 0) {
2046 if (get_be16(&dport
, *argv
, 0))
2047 invarg("invalid dport\n", *argv
);
2048 addattr16(&req
.n
, sizeof(req
), RTA_DPORT
, dport
);
2049 } else if (matches(*argv
, "ipproto") == 0) {
2053 ipproto
= inet_proto_a2n(*argv
);
2055 invarg("Invalid \"ipproto\" value\n",
2057 addattr8(&req
.n
, sizeof(req
), RTA_IP_PROTO
, ipproto
);
2061 if (strcmp(*argv
, "to") == 0) {
2064 if (matches(*argv
, "help") == 0)
2066 get_prefix(&addr
, *argv
, req
.r
.rtm_family
);
2067 if (req
.r
.rtm_family
== AF_UNSPEC
)
2068 req
.r
.rtm_family
= addr
.family
;
2070 addattr_l(&req
.n
, sizeof(req
),
2071 RTA_DST
, &addr
.data
, addr
.bytelen
);
2072 req
.r
.rtm_dst_len
= addr
.bitlen
;
2073 address_found
= true;
2078 if (!address_found
) {
2079 fprintf(stderr
, "need at least a destination address\n");
2087 idx
= ll_name_to_index(idev
);
2090 addattr32(&req
.n
, sizeof(req
), RTA_IIF
, idx
);
2093 idx
= ll_name_to_index(odev
);
2096 addattr32(&req
.n
, sizeof(req
), RTA_OIF
, idx
);
2100 addattr32(&req
.n
, sizeof(req
), RTA_MARK
, mark
);
2102 if (req
.r
.rtm_family
== AF_UNSPEC
)
2103 req
.r
.rtm_family
= AF_INET
;
2105 /* Only IPv4 supports the RTM_F_LOOKUP_TABLE flag */
2106 if (req
.r
.rtm_family
== AF_INET
)
2107 req
.r
.rtm_flags
|= RTM_F_LOOKUP_TABLE
;
2109 req
.r
.rtm_flags
|= RTM_F_FIB_MATCH
;
2111 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2116 if (connected
&& !from_ok
) {
2117 struct rtmsg
*r
= NLMSG_DATA(answer
);
2118 int len
= answer
->nlmsg_len
;
2119 struct rtattr
*tb
[RTA_MAX
+1];
2121 if (print_route(answer
, (void *)stdout
) < 0) {
2122 fprintf(stderr
, "An error :-)\n");
2127 if (answer
->nlmsg_type
!= RTM_NEWROUTE
) {
2128 fprintf(stderr
, "Not a route?\n");
2132 len
-= NLMSG_LENGTH(sizeof(*r
));
2134 fprintf(stderr
, "Wrong len %d\n", len
);
2139 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2141 if (tb
[RTA_PREFSRC
]) {
2142 tb
[RTA_PREFSRC
]->rta_type
= RTA_SRC
;
2143 r
->rtm_src_len
= 8*RTA_PAYLOAD(tb
[RTA_PREFSRC
]);
2144 } else if (!tb
[RTA_SRC
]) {
2145 fprintf(stderr
, "Failed to connect the route\n");
2149 if (!odev
&& tb
[RTA_OIF
])
2150 tb
[RTA_OIF
]->rta_type
= 0;
2151 if (tb
[RTA_GATEWAY
])
2152 tb
[RTA_GATEWAY
]->rta_type
= 0;
2154 tb
[RTA_VIA
]->rta_type
= 0;
2155 if (!idev
&& tb
[RTA_IIF
])
2156 tb
[RTA_IIF
]->rta_type
= 0;
2157 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
2158 req
.n
.nlmsg_type
= RTM_GETROUTE
;
2162 if (rtnl_talk(&rth
, &req
.n
, &answer
) < 0)
2166 if (print_route(answer
, (void *)stdout
) < 0) {
2167 fprintf(stderr
, "An error :-)\n");
2177 static int rtattr_cmp(const struct rtattr
*rta1
, const struct rtattr
*rta2
)
2179 if (!rta1
|| !rta2
|| rta1
->rta_len
!= rta2
->rta_len
)
2182 return memcmp(RTA_DATA(rta1
), RTA_DATA(rta2
), RTA_PAYLOAD(rta1
));
2185 static int restore_handler(struct rtnl_ctrl_data
*ctrl
,
2186 struct nlmsghdr
*n
, void *arg
)
2188 struct rtmsg
*r
= NLMSG_DATA(n
);
2189 struct rtattr
*tb
[RTA_MAX
+1];
2190 int len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
));
2191 int ret
, prio
= *(int *)arg
;
2193 parse_rtattr(tb
, RTA_MAX
, RTM_RTA(r
), len
);
2195 /* Restore routes in correct order:
2196 * 0. ones for local addresses,
2197 * 1. ones for local networks,
2198 * 2. others (remote networks/hosts).
2200 if (!prio
&& !tb
[RTA_GATEWAY
] && (!tb
[RTA_PREFSRC
] ||
2201 !rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
])))
2203 else if (prio
== 1 && !tb
[RTA_GATEWAY
] && tb
[RTA_PREFSRC
] &&
2204 rtattr_cmp(tb
[RTA_PREFSRC
], tb
[RTA_DST
]))
2206 else if (prio
== 2 && tb
[RTA_GATEWAY
])
2212 n
->nlmsg_flags
|= NLM_F_REQUEST
| NLM_F_CREATE
| NLM_F_ACK
;
2216 ret
= rtnl_talk(&rth
, n
, NULL
);
2217 if ((ret
< 0) && (errno
== EEXIST
))
2223 static int route_dump_check_magic(void)
2228 if (isatty(STDIN_FILENO
)) {
2229 fprintf(stderr
, "Can't restore route dump from a terminal\n");
2233 ret
= fread(&magic
, sizeof(magic
), 1, stdin
);
2234 if (magic
!= route_dump_magic
) {
2235 fprintf(stderr
, "Magic mismatch (%d elems, %x magic)\n", ret
, magic
);
2242 static int iproute_restore(void)
2246 if (route_dump_check_magic())
2251 perror("Failed to restore: ftell");
2255 for (prio
= 0; prio
< 3; prio
++) {
2258 err
= rtnl_from_file(stdin
, &restore_handler
, &prio
);
2262 if (fseek(stdin
, pos
, SEEK_SET
) == -1) {
2263 perror("Failed to restore: fseek");
2271 static int show_handler(struct rtnl_ctrl_data
*ctrl
,
2272 struct nlmsghdr
*n
, void *arg
)
2274 print_route(n
, stdout
);
2278 static int iproute_showdump(void)
2280 if (route_dump_check_magic())
2283 if (rtnl_from_file(stdin
, &show_handler
, NULL
))
2289 void iproute_reset_filter(int ifindex
)
2291 memset(&filter
, 0, sizeof(filter
));
2292 filter
.mdst
.bitlen
= -1;
2293 filter
.msrc
.bitlen
= -1;
2294 filter
.oif
= ifindex
;
2296 filter
.oifmask
= -1;
2299 int do_iproute(int argc
, char **argv
)
2302 return iproute_list_flush_or_save(0, NULL
, IPROUTE_LIST
);
2304 if (matches(*argv
, "add") == 0)
2305 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_EXCL
,
2307 if (matches(*argv
, "change") == 0 || strcmp(*argv
, "chg") == 0)
2308 return iproute_modify(RTM_NEWROUTE
, NLM_F_REPLACE
,
2310 if (matches(*argv
, "replace") == 0)
2311 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_REPLACE
,
2313 if (matches(*argv
, "prepend") == 0)
2314 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
,
2316 if (matches(*argv
, "append") == 0)
2317 return iproute_modify(RTM_NEWROUTE
, NLM_F_CREATE
|NLM_F_APPEND
,
2319 if (matches(*argv
, "test") == 0)
2320 return iproute_modify(RTM_NEWROUTE
, NLM_F_EXCL
,
2322 if (matches(*argv
, "delete") == 0)
2323 return iproute_modify(RTM_DELROUTE
, 0,
2325 if (matches(*argv
, "list") == 0 || matches(*argv
, "show") == 0
2326 || matches(*argv
, "lst") == 0)
2327 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_LIST
);
2328 if (matches(*argv
, "get") == 0)
2329 return iproute_get(argc
-1, argv
+1);
2330 if (matches(*argv
, "flush") == 0)
2331 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_FLUSH
);
2332 if (matches(*argv
, "save") == 0)
2333 return iproute_list_flush_or_save(argc
-1, argv
+1, IPROUTE_SAVE
);
2334 if (matches(*argv
, "restore") == 0)
2335 return iproute_restore();
2336 if (matches(*argv
, "showdump") == 0)
2337 return iproute_showdump();
2338 if (matches(*argv
, "help") == 0)
2342 "Command \"%s\" is unknown, try \"ip route help\".\n", *argv
);