]>
git.proxmox.com Git - mirror_iproute2.git/blob - bridge/fdb.c
1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Get/set/delete fdb table with netlink
5 * TODO: merge/replace this with ip neighbour
7 * Authors: Stephen Hemminger <shemminger@vyatta.com>
16 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <linux/if_bridge.h>
21 #include <linux/if_ether.h>
22 #include <linux/neighbour.h>
27 #include "json_print.h"
28 #include "libnetlink.h"
29 #include "br_common.h"
33 static unsigned int filter_index
, filter_vlan
, filter_state
, filter_master
;
35 static void usage(void)
38 "Usage: bridge fdb { add | append | del | replace } ADDR dev DEV\n"
39 " [ self ] [ master ] [ use ] [ router ] [ extern_learn ]\n"
40 " [ sticky ] [ local | static | dynamic ] [ dst IPADDR ]\n"
41 " [ vlan VID ] [ port PORT] [ vni VNI ] [ via DEV ]\n"
42 " 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 fdb_print_flags(FILE *fp
, unsigned int flags
)
86 open_json_array(PRINT_JSON
,
87 is_json_context() ? "flags" : "");
90 print_string(PRINT_ANY
, NULL
, "%s ", "self");
92 if (flags
& NTF_ROUTER
)
93 print_string(PRINT_ANY
, NULL
, "%s ", "router");
95 if (flags
& NTF_EXT_LEARNED
)
96 print_string(PRINT_ANY
, NULL
, "%s ", "extern_learn");
98 if (flags
& NTF_OFFLOADED
)
99 print_string(PRINT_ANY
, NULL
, "%s ", "offload");
101 if (flags
& NTF_MASTER
)
102 print_string(PRINT_ANY
, NULL
, "%s ", "master");
104 if (flags
& NTF_STICKY
)
105 print_string(PRINT_ANY
, NULL
, "%s ", "sticky");
107 close_json_array(PRINT_JSON
, NULL
);
110 static void fdb_print_stats(FILE *fp
, const struct nda_cacheinfo
*ci
)
117 if (is_json_context()) {
118 print_uint(PRINT_JSON
, "used", NULL
,
120 print_uint(PRINT_JSON
, "updated", NULL
,
121 ci
->ndm_updated
/ hz
);
123 fprintf(fp
, "used %d/%d ", ci
->ndm_used
/ hz
,
124 ci
->ndm_updated
/ hz
);
129 int print_fdb(struct nlmsghdr
*n
, void *arg
)
132 struct ndmsg
*r
= NLMSG_DATA(n
);
133 int len
= n
->nlmsg_len
;
134 struct rtattr
*tb
[NDA_MAX
+1];
137 if (n
->nlmsg_type
!= RTM_NEWNEIGH
&& n
->nlmsg_type
!= RTM_DELNEIGH
) {
138 fprintf(stderr
, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
139 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
143 len
-= NLMSG_LENGTH(sizeof(*r
));
145 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
149 if (r
->ndm_family
!= AF_BRIDGE
)
152 if (filter_index
&& filter_index
!= r
->ndm_ifindex
)
155 if (filter_state
&& !(r
->ndm_state
& filter_state
))
158 parse_rtattr(tb
, NDA_MAX
, NDA_RTA(r
),
159 n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
)));
162 vid
= rta_getattr_u16(tb
[NDA_VLAN
]);
164 if (filter_vlan
&& filter_vlan
!= vid
)
167 open_json_object(NULL
);
168 if (n
->nlmsg_type
== RTM_DELNEIGH
)
169 print_bool(PRINT_ANY
, "deleted", "Deleted ", true);
171 if (tb
[NDA_LLADDR
]) {
175 lladdr
= ll_addr_n2a(RTA_DATA(tb
[NDA_LLADDR
]),
176 RTA_PAYLOAD(tb
[NDA_LLADDR
]),
177 ll_index_to_type(r
->ndm_ifindex
),
180 print_color_string(PRINT_ANY
, COLOR_MAC
,
181 "mac", "%s ", lladdr
);
184 if (!filter_index
&& r
->ndm_ifindex
)
185 print_color_string(PRINT_ANY
, COLOR_IFNAME
,
187 ll_index_to_name(r
->ndm_ifindex
));
190 int family
= AF_INET
;
193 if (RTA_PAYLOAD(tb
[NDA_DST
]) == sizeof(struct in6_addr
))
196 dst
= format_host(family
,
197 RTA_PAYLOAD(tb
[NDA_DST
]),
198 RTA_DATA(tb
[NDA_DST
]));
200 print_color_string(PRINT_ANY
,
201 ifa_family_color(family
),
202 "dst", "dst %s ", dst
);
206 print_uint(PRINT_ANY
,
207 "vlan", "vlan %hu ", vid
);
210 print_uint(PRINT_ANY
,
212 rta_getattr_be16(tb
[NDA_PORT
]));
215 print_uint(PRINT_ANY
,
217 rta_getattr_u32(tb
[NDA_VNI
]));
220 print_uint(PRINT_ANY
,
221 "src_vni", "src_vni %u ",
222 rta_getattr_u32(tb
[NDA_SRC_VNI
]));
224 if (tb
[NDA_IFINDEX
]) {
225 unsigned int ifindex
= rta_getattr_u32(tb
[NDA_IFINDEX
]);
227 if (tb
[NDA_LINK_NETNSID
])
228 print_uint(PRINT_ANY
,
229 "viaIfIndex", "via ifindex %u ",
232 print_string(PRINT_ANY
,
234 ll_index_to_name(ifindex
));
237 if (tb
[NDA_LINK_NETNSID
])
238 print_uint(PRINT_ANY
,
239 "linkNetNsId", "link-netnsid %d ",
240 rta_getattr_u32(tb
[NDA_LINK_NETNSID
]));
242 if (show_stats
&& tb
[NDA_CACHEINFO
])
243 fdb_print_stats(fp
, RTA_DATA(tb
[NDA_CACHEINFO
]));
245 fdb_print_flags(fp
, r
->ndm_flags
);
249 print_string(PRINT_ANY
, "master", "master %s ",
250 ll_index_to_name(rta_getattr_u32(tb
[NDA_MASTER
])));
252 print_string(PRINT_ANY
, "state", "%s\n",
253 state_n2a(r
->ndm_state
));
259 static int fdb_dump_filter(struct nlmsghdr
*nlh
, int reqlen
)
264 struct ndmsg
*ndm
= NLMSG_DATA(nlh
);
266 ndm
->ndm_ifindex
= filter_index
;
270 err
= addattr32(nlh
, reqlen
, NDA_MASTER
, filter_master
);
278 static int fdb_show(int argc
, char **argv
)
280 char *filter_dev
= NULL
;
284 if ((strcmp(*argv
, "brport") == 0) || strcmp(*argv
, "dev") == 0) {
287 } else if (strcmp(*argv
, "br") == 0) {
290 } else if (strcmp(*argv
, "vlan") == 0) {
293 duparg("vlan", *argv
);
294 filter_vlan
= atoi(*argv
);
295 } else if (strcmp(*argv
, "state") == 0) {
299 if (state_a2n(&state
, *argv
))
300 invarg("invalid state", *argv
);
301 filter_state
|= state
;
303 if (matches(*argv
, "help") == 0)
310 int br_ifindex
= ll_name_to_index(br
);
312 if (br_ifindex
== 0) {
313 fprintf(stderr
, "Cannot find bridge device \"%s\"\n", br
);
316 filter_master
= br_ifindex
;
319 /*we'll keep around filter_dev for older kernels */
321 filter_index
= ll_name_to_index(filter_dev
);
323 return nodev(filter_dev
);
326 if (rtnl_neighdump_req(&rth
, PF_BRIDGE
, fdb_dump_filter
) < 0) {
327 perror("Cannot send dump request");
332 if (rtnl_dump_filter(&rth
, print_fdb
, stdout
) < 0) {
333 fprintf(stderr
, "Dump terminated\n");
342 static int fdb_modify(int cmd
, int flags
, int argc
, char **argv
)
349 .n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ndmsg
)),
350 .n
.nlmsg_flags
= NLM_F_REQUEST
| flags
,
352 .ndm
.ndm_family
= PF_BRIDGE
,
353 .ndm
.ndm_state
= NUD_NOARP
,
360 unsigned long port
= 0;
361 unsigned long vni
= ~0;
362 unsigned int via
= 0;
367 if (strcmp(*argv
, "dev") == 0) {
370 } else if (strcmp(*argv
, "dst") == 0) {
373 duparg2("dst", *argv
);
374 get_addr(&dst
, *argv
, preferred_family
);
376 } else if (strcmp(*argv
, "port") == 0) {
379 port
= strtoul(*argv
, &endptr
, 0);
380 if (endptr
&& *endptr
) {
383 pse
= getservbyname(*argv
, "udp");
385 invarg("invalid port\n", *argv
);
386 port
= ntohs(pse
->s_port
);
387 } else if (port
> 0xffff)
388 invarg("invalid port\n", *argv
);
389 } else if (strcmp(*argv
, "vni") == 0) {
391 vni
= strtoul(*argv
, &endptr
, 0);
392 if ((endptr
&& *endptr
) ||
393 (vni
>> 24) || vni
== ULONG_MAX
)
394 invarg("invalid VNI\n", *argv
);
395 } else if (strcmp(*argv
, "via") == 0) {
397 via
= ll_name_to_index(*argv
);
400 } else if (strcmp(*argv
, "self") == 0) {
401 req
.ndm
.ndm_flags
|= NTF_SELF
;
402 } else if (matches(*argv
, "master") == 0) {
403 req
.ndm
.ndm_flags
|= NTF_MASTER
;
404 } else if (matches(*argv
, "router") == 0) {
405 req
.ndm
.ndm_flags
|= NTF_ROUTER
;
406 } else if (matches(*argv
, "local") == 0 ||
407 matches(*argv
, "permanent") == 0) {
408 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
409 } else if (matches(*argv
, "temp") == 0 ||
410 matches(*argv
, "static") == 0) {
411 req
.ndm
.ndm_state
|= NUD_REACHABLE
;
412 } else if (matches(*argv
, "dynamic") == 0) {
413 req
.ndm
.ndm_state
|= NUD_REACHABLE
;
414 req
.ndm
.ndm_state
&= ~NUD_NOARP
;
415 } else if (matches(*argv
, "vlan") == 0) {
417 duparg2("vlan", *argv
);
420 } else if (matches(*argv
, "use") == 0) {
421 req
.ndm
.ndm_flags
|= NTF_USE
;
422 } else if (matches(*argv
, "extern_learn") == 0) {
423 req
.ndm
.ndm_flags
|= NTF_EXT_LEARNED
;
424 } else if (matches(*argv
, "sticky") == 0) {
425 req
.ndm
.ndm_flags
|= NTF_STICKY
;
427 if (strcmp(*argv
, "to") == 0)
430 if (matches(*argv
, "help") == 0)
433 duparg2("to", *argv
);
439 if (d
== NULL
|| addr
== NULL
) {
440 fprintf(stderr
, "Device and address are required arguments.\n");
445 if (!(req
.ndm
.ndm_flags
&(NTF_SELF
|NTF_MASTER
)))
446 req
.ndm
.ndm_flags
|= NTF_SELF
;
448 /* Assume permanent */
449 if (!(req
.ndm
.ndm_state
&(NUD_PERMANENT
|NUD_REACHABLE
)))
450 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
452 if (sscanf(addr
, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
453 abuf
, abuf
+1, abuf
+2,
454 abuf
+3, abuf
+4, abuf
+5) != 6) {
455 fprintf(stderr
, "Invalid mac address %s\n", addr
);
459 addattr_l(&req
.n
, sizeof(req
), NDA_LLADDR
, abuf
, ETH_ALEN
);
461 addattr_l(&req
.n
, sizeof(req
), NDA_DST
, &dst
.data
, dst
.bytelen
);
464 addattr16(&req
.n
, sizeof(req
), NDA_VLAN
, vid
);
467 unsigned short dport
;
469 dport
= htons((unsigned short)port
);
470 addattr16(&req
.n
, sizeof(req
), NDA_PORT
, dport
);
473 addattr32(&req
.n
, sizeof(req
), NDA_VNI
, vni
);
475 addattr32(&req
.n
, sizeof(req
), NDA_IFINDEX
, via
);
477 req
.ndm
.ndm_ifindex
= ll_name_to_index(d
);
478 if (!req
.ndm
.ndm_ifindex
)
481 if (rtnl_talk(&rth
, &req
.n
, NULL
) < 0)
487 int do_fdb(int argc
, char **argv
)
492 if (matches(*argv
, "add") == 0)
493 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_EXCL
, argc
-1, argv
+1);
494 if (matches(*argv
, "append") == 0)
495 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_APPEND
, argc
-1, argv
+1);
496 if (matches(*argv
, "replace") == 0)
497 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_REPLACE
, argc
-1, argv
+1);
498 if (matches(*argv
, "delete") == 0)
499 return fdb_modify(RTM_DELNEIGH
, 0, argc
-1, argv
+1);
500 if (matches(*argv
, "show") == 0 ||
501 matches(*argv
, "lst") == 0 ||
502 matches(*argv
, "list") == 0)
503 return fdb_show(argc
-1, argv
+1);
504 if (matches(*argv
, "help") == 0)
507 return fdb_show(0, NULL
);
509 fprintf(stderr
, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv
);