]>
git.proxmox.com Git - mirror_iproute2.git/blob - bridge/fdb.c
2 * Get/set/delete fdb table with netlink
4 * TODO: merge/replace this with ip neighbour
6 * Authors: Stephen Hemminger <shemminger@vyatta.com>
15 #include <sys/socket.h>
18 #include <netinet/in.h>
19 #include <linux/if_bridge.h>
20 #include <linux/if_ether.h>
21 #include <linux/neighbour.h>
24 #include <json_writer.h>
27 #include "libnetlink.h"
28 #include "br_common.h"
32 static unsigned int filter_index
, filter_vlan
, filter_state
;
34 json_writer_t
*jw_global
;
36 static void usage(void)
38 fprintf(stderr
, "Usage: bridge fdb { add | append | del | replace } ADDR dev DEV\n"
39 " [ self ] [ master ] [ use ] [ router ]\n"
40 " [ local | static | dynamic ] [ dst IPADDR ] [ vlan VID ]\n"
41 " [ port PORT] [ vni VNI ] [ via DEV ]\n");
42 fprintf(stderr
, " bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] [ state STATE ] ]\n");
46 static const char *state_n2a(unsigned int s
)
50 if (s
& NUD_PERMANENT
)
59 if (s
& NUD_REACHABLE
)
62 sprintf(buf
, "state=%#x", s
);
66 static int state_a2n(unsigned int *s
, const char *arg
)
68 if (matches(arg
, "permanent") == 0)
70 else if (matches(arg
, "static") == 0 || matches(arg
, "temp") == 0)
72 else if (matches(arg
, "stale") == 0)
74 else if (matches(arg
, "reachable") == 0 || matches(arg
, "dynamic") == 0)
76 else if (strcmp(arg
, "all") == 0)
78 else if (get_unsigned(s
, arg
, 0))
84 static void start_json_fdb_flags_array(bool *fdb_flags
)
88 jsonw_name(jw_global
, "flags");
89 jsonw_start_array(jw_global
);
93 int print_fdb(const struct sockaddr_nl
*who
, struct nlmsghdr
*n
, void *arg
)
96 struct ndmsg
*r
= NLMSG_DATA(n
);
97 int len
= n
->nlmsg_len
;
98 struct rtattr
*tb
[NDA_MAX
+1];
100 bool fdb_flags
= false;
103 if (n
->nlmsg_type
!= RTM_NEWNEIGH
&& n
->nlmsg_type
!= RTM_DELNEIGH
) {
104 fprintf(stderr
, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
105 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
109 len
-= NLMSG_LENGTH(sizeof(*r
));
111 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
115 if (r
->ndm_family
!= AF_BRIDGE
)
118 if (filter_index
&& filter_index
!= r
->ndm_ifindex
)
121 if (filter_state
&& !(r
->ndm_state
& filter_state
))
124 parse_rtattr(tb
, NDA_MAX
, NDA_RTA(r
),
125 n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
)));
128 vid
= rta_getattr_u16(tb
[NDA_VLAN
]);
130 if (filter_vlan
&& filter_vlan
!= vid
)
134 jsonw_pretty(jw_global
, 1);
135 jsonw_start_object(jw_global
);
138 if (n
->nlmsg_type
== RTM_DELNEIGH
) {
140 jsonw_string_field(jw_global
, "opCode", "deleted");
142 fprintf(fp
, "Deleted ");
145 if (tb
[NDA_LLADDR
]) {
147 ll_addr_n2a(RTA_DATA(tb
[NDA_LLADDR
]),
148 RTA_PAYLOAD(tb
[NDA_LLADDR
]),
149 ll_index_to_type(r
->ndm_ifindex
),
152 jsonw_string_field(jw_global
, "mac", b1
);
154 fprintf(fp
, "%s ", b1
);
157 if (!filter_index
&& r
->ndm_ifindex
) {
159 jsonw_string_field(jw_global
, "dev",
160 ll_index_to_name(r
->ndm_ifindex
));
162 fprintf(fp
, "dev %s ",
163 ll_index_to_name(r
->ndm_ifindex
));
167 int family
= AF_INET
;
170 if (RTA_PAYLOAD(tb
[NDA_DST
]) == sizeof(struct in6_addr
))
173 abuf_s
= format_host(family
,
174 RTA_PAYLOAD(tb
[NDA_DST
]),
175 RTA_DATA(tb
[NDA_DST
]));
177 jsonw_string_field(jw_global
, "dst", abuf_s
);
179 fprintf(fp
, "dst %s ", abuf_s
);
184 jsonw_uint_field(jw_global
, "vlan", vid
);
186 fprintf(fp
, "vlan %hu ", vid
);
191 jsonw_uint_field(jw_global
, "port",
192 rta_getattr_be16(tb
[NDA_PORT
]));
194 fprintf(fp
, "port %d ",
195 rta_getattr_be16(tb
[NDA_PORT
]));
200 jsonw_uint_field(jw_global
, "vni",
201 rta_getattr_u32(tb
[NDA_VNI
]));
203 fprintf(fp
, "vni %d ",
204 rta_getattr_u32(tb
[NDA_VNI
]));
207 if (tb
[NDA_IFINDEX
]) {
208 unsigned int ifindex
= rta_getattr_u32(tb
[NDA_IFINDEX
]);
211 char ifname
[IF_NAMESIZE
];
213 if (!tb
[NDA_LINK_NETNSID
] &&
214 if_indextoname(ifindex
, ifname
)) {
216 jsonw_string_field(jw_global
, "viaIf",
219 fprintf(fp
, "via %s ", ifname
);
222 jsonw_uint_field(jw_global
, "viaIfIndex",
225 fprintf(fp
, "via ifindex %u ", ifindex
);
230 if (tb
[NDA_LINK_NETNSID
]) {
232 jsonw_uint_field(jw_global
, "linkNetNsId",
233 rta_getattr_u32(tb
[NDA_LINK_NETNSID
]));
235 fprintf(fp
, "link-netnsid %d ",
236 rta_getattr_u32(tb
[NDA_LINK_NETNSID
]));
239 if (show_stats
&& tb
[NDA_CACHEINFO
]) {
240 struct nda_cacheinfo
*ci
= RTA_DATA(tb
[NDA_CACHEINFO
]);
241 int hz
= get_user_hz();
244 jsonw_uint_field(jw_global
, "used",
246 jsonw_uint_field(jw_global
, "updated",
249 fprintf(fp
, "used %d/%d ", ci
->ndm_used
/hz
,
255 if (r
->ndm_flags
& NTF_SELF
) {
256 start_json_fdb_flags_array(&fdb_flags
);
257 jsonw_string(jw_global
, "self");
259 if (r
->ndm_flags
& NTF_ROUTER
) {
260 start_json_fdb_flags_array(&fdb_flags
);
261 jsonw_string(jw_global
, "router");
263 if (r
->ndm_flags
& NTF_EXT_LEARNED
) {
264 start_json_fdb_flags_array(&fdb_flags
);
265 jsonw_string(jw_global
, "extern_learn");
267 if (r
->ndm_flags
& NTF_OFFLOADED
) {
268 start_json_fdb_flags_array(&fdb_flags
);
269 jsonw_string(jw_global
, "offload");
271 if (r
->ndm_flags
& NTF_MASTER
)
272 jsonw_string(jw_global
, "master");
274 jsonw_end_array(jw_global
);
277 jsonw_string_field(jw_global
,
279 ll_index_to_name(rta_getattr_u32(tb
[NDA_MASTER
])));
282 if (r
->ndm_flags
& NTF_SELF
)
283 fprintf(fp
, "self ");
284 if (r
->ndm_flags
& NTF_ROUTER
)
285 fprintf(fp
, "router ");
286 if (r
->ndm_flags
& NTF_EXT_LEARNED
)
287 fprintf(fp
, "extern_learn ");
288 if (r
->ndm_flags
& NTF_OFFLOADED
)
289 fprintf(fp
, "offload ");
290 if (tb
[NDA_MASTER
]) {
291 fprintf(fp
, "master %s ",
292 ll_index_to_name(rta_getattr_u32(tb
[NDA_MASTER
])));
293 } else if (r
->ndm_flags
& NTF_MASTER
) {
294 fprintf(fp
, "master ");
298 state_s
= state_n2a(r
->ndm_state
);
301 jsonw_string_field(jw_global
, "state", state_s
);
303 jsonw_end_object(jw_global
);
305 fprintf(fp
, "%s\n", state_s
);
313 static int fdb_show(int argc
, char **argv
)
317 struct ifinfomsg ifm
;
320 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
)),
321 .ifm
.ifi_family
= PF_BRIDGE
,
324 char *filter_dev
= NULL
;
326 int msg_size
= sizeof(struct ifinfomsg
);
329 if ((strcmp(*argv
, "brport") == 0) || strcmp(*argv
, "dev") == 0) {
332 } else if (strcmp(*argv
, "br") == 0) {
335 } else if (strcmp(*argv
, "vlan") == 0) {
338 duparg("vlan", *argv
);
339 filter_vlan
= atoi(*argv
);
340 } else if (strcmp(*argv
, "state") == 0) {
344 if (state_a2n(&state
, *argv
))
345 invarg("invalid state", *argv
);
346 filter_state
|= state
;
348 if (matches(*argv
, "help") == 0)
355 int br_ifindex
= ll_name_to_index(br
);
357 if (br_ifindex
== 0) {
358 fprintf(stderr
, "Cannot find bridge device \"%s\"\n", br
);
361 addattr32(&req
.n
, sizeof(req
), IFLA_MASTER
, br_ifindex
);
362 msg_size
+= RTA_LENGTH(4);
365 /*we'll keep around filter_dev for older kernels */
367 filter_index
= if_nametoindex(filter_dev
);
368 if (filter_index
== 0) {
369 fprintf(stderr
, "Cannot find device \"%s\"\n",
373 req
.ifm
.ifi_index
= filter_index
;
376 if (rtnl_dump_request(&rth
, RTM_GETNEIGH
, &req
.ifm
, msg_size
) < 0) {
377 perror("Cannot send dump request");
382 jw_global
= jsonw_new(stdout
);
384 fprintf(stderr
, "Error allocation json object\n");
387 jsonw_start_array(jw_global
);
389 if (rtnl_dump_filter(&rth
, print_fdb
, stdout
) < 0) {
390 fprintf(stderr
, "Dump terminated\n");
394 jsonw_end_array(jw_global
);
395 jsonw_destroy(&jw_global
);
401 static int fdb_modify(int cmd
, int flags
, int argc
, char **argv
)
408 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ndmsg
)),
409 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
411 .ndm
.ndm_family
= PF_BRIDGE
,
412 .ndm
.ndm_state
= NUD_NOARP
,
419 unsigned long port
= 0;
420 unsigned long vni
= ~0;
421 unsigned int via
= 0;
426 if (strcmp(*argv
, "dev") == 0) {
429 } else if (strcmp(*argv
, "dst") == 0) {
432 duparg2("dst", *argv
);
433 get_addr(&dst
, *argv
, preferred_family
);
435 } else if (strcmp(*argv
, "port") == 0) {
438 port
= strtoul(*argv
, &endptr
, 0);
439 if (endptr
&& *endptr
) {
442 pse
= getservbyname(*argv
, "udp");
444 invarg("invalid port\n", *argv
);
445 port
= ntohs(pse
->s_port
);
446 } else if (port
> 0xffff)
447 invarg("invalid port\n", *argv
);
448 } else if (strcmp(*argv
, "vni") == 0) {
450 vni
= strtoul(*argv
, &endptr
, 0);
451 if ((endptr
&& *endptr
) ||
452 (vni
>> 24) || vni
== ULONG_MAX
)
453 invarg("invalid VNI\n", *argv
);
454 } else if (strcmp(*argv
, "via") == 0) {
456 via
= if_nametoindex(*argv
);
458 invarg("invalid device\n", *argv
);
459 } else if (strcmp(*argv
, "self") == 0) {
460 req
.ndm
.ndm_flags
|= NTF_SELF
;
461 } else if (matches(*argv
, "master") == 0) {
462 req
.ndm
.ndm_flags
|= NTF_MASTER
;
463 } else if (matches(*argv
, "router") == 0) {
464 req
.ndm
.ndm_flags
|= NTF_ROUTER
;
465 } else if (matches(*argv
, "local") == 0 ||
466 matches(*argv
, "permanent") == 0) {
467 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
468 } else if (matches(*argv
, "temp") == 0 ||
469 matches(*argv
, "static") == 0) {
470 req
.ndm
.ndm_state
|= NUD_REACHABLE
;
471 } else if (matches(*argv
, "dynamic") == 0) {
472 req
.ndm
.ndm_state
|= NUD_REACHABLE
;
473 req
.ndm
.ndm_state
&= ~NUD_NOARP
;
474 } else if (matches(*argv
, "vlan") == 0) {
476 duparg2("vlan", *argv
);
479 } else if (matches(*argv
, "use") == 0) {
480 req
.ndm
.ndm_flags
|= NTF_USE
;
482 if (strcmp(*argv
, "to") == 0) {
485 if (matches(*argv
, "help") == 0)
488 duparg2("to", *argv
);
494 if (d
== NULL
|| addr
== NULL
) {
495 fprintf(stderr
, "Device and address are required arguments.\n");
500 if (!(req
.ndm
.ndm_flags
&(NTF_SELF
|NTF_MASTER
)))
501 req
.ndm
.ndm_flags
|= NTF_SELF
;
503 /* Assume permanent */
504 if (!(req
.ndm
.ndm_state
&(NUD_PERMANENT
|NUD_REACHABLE
)))
505 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
507 if (sscanf(addr
, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
508 abuf
, abuf
+1, abuf
+2,
509 abuf
+3, abuf
+4, abuf
+5) != 6) {
510 fprintf(stderr
, "Invalid mac address %s\n", addr
);
514 addattr_l(&req
.n
, sizeof(req
), NDA_LLADDR
, abuf
, ETH_ALEN
);
516 addattr_l(&req
.n
, sizeof(req
), NDA_DST
, &dst
.data
, dst
.bytelen
);
519 addattr16(&req
.n
, sizeof(req
), NDA_VLAN
, vid
);
522 unsigned short dport
;
524 dport
= htons((unsigned short)port
);
525 addattr16(&req
.n
, sizeof(req
), NDA_PORT
, dport
);
528 addattr32(&req
.n
, sizeof(req
), NDA_VNI
, vni
);
530 addattr32(&req
.n
, sizeof(req
), NDA_IFINDEX
, via
);
532 req
.ndm
.ndm_ifindex
= ll_name_to_index(d
);
533 if (req
.ndm
.ndm_ifindex
== 0) {
534 fprintf(stderr
, "Cannot find device \"%s\"\n", d
);
538 if (rtnl_talk(&rth
, &req
.n
, NULL
, 0) < 0)
544 int do_fdb(int argc
, char **argv
)
549 if (matches(*argv
, "add") == 0)
550 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_EXCL
, argc
-1, argv
+1);
551 if (matches(*argv
, "append") == 0)
552 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_APPEND
, argc
-1, argv
+1);
553 if (matches(*argv
, "replace") == 0)
554 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_REPLACE
, argc
-1, argv
+1);
555 if (matches(*argv
, "delete") == 0)
556 return fdb_modify(RTM_DELNEIGH
, 0, argc
-1, argv
+1);
557 if (matches(*argv
, "show") == 0 ||
558 matches(*argv
, "lst") == 0 ||
559 matches(*argv
, "list") == 0)
560 return fdb_show(argc
-1, argv
+1);
561 if (matches(*argv
, "help") == 0)
564 return fdb_show(0, NULL
);
566 fprintf(stderr
, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv
);