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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>
25 #include "libnetlink.h"
26 #include "br_common.h"
30 static unsigned int filter_index
;
32 static void usage(void)
34 fprintf(stderr
, "Usage: bridge fdb { add | append | del | replace } ADDR dev DEV {self|master} [ temp ]\n"
35 " [router] [ dst IPADDR] [ vlan VID ]\n"
36 " [ port PORT] [ vni VNI ] [via DEV]\n");
37 fprintf(stderr
, " bridge fdb {show} [ dev DEV ]\n");
41 static const char *state_n2a(unsigned s
)
45 if (s
& NUD_PERMANENT
)
54 if (s
& NUD_REACHABLE
)
57 sprintf(buf
, "state=%#x", s
);
61 int print_fdb(const struct sockaddr_nl
*who
, struct nlmsghdr
*n
, void *arg
)
64 struct ndmsg
*r
= NLMSG_DATA(n
);
65 int len
= n
->nlmsg_len
;
66 struct rtattr
* tb
[NDA_MAX
+1];
68 if (n
->nlmsg_type
!= RTM_NEWNEIGH
&& n
->nlmsg_type
!= RTM_DELNEIGH
) {
69 fprintf(stderr
, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
70 n
->nlmsg_len
, n
->nlmsg_type
, n
->nlmsg_flags
);
75 len
-= NLMSG_LENGTH(sizeof(*r
));
77 fprintf(stderr
, "BUG: wrong nlmsg len %d\n", len
);
81 if (r
->ndm_family
!= AF_BRIDGE
)
84 if (filter_index
&& filter_index
!= r
->ndm_ifindex
)
87 parse_rtattr(tb
, NDA_MAX
, NDA_RTA(r
),
88 n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*r
)));
90 if (n
->nlmsg_type
== RTM_DELNEIGH
)
91 fprintf(fp
, "Deleted ");
96 ll_addr_n2a(RTA_DATA(tb
[NDA_LLADDR
]),
97 RTA_PAYLOAD(tb
[NDA_LLADDR
]),
98 ll_index_to_type(r
->ndm_ifindex
),
102 if (!filter_index
&& r
->ndm_ifindex
)
103 fprintf(fp
, "dev %s ", ll_index_to_name(r
->ndm_ifindex
));
107 int family
= AF_INET
;
109 if (RTA_PAYLOAD(tb
[NDA_DST
]) == sizeof(struct in6_addr
))
112 fprintf(fp
, "dst %s ",
114 RTA_PAYLOAD(tb
[NDA_DST
]),
115 RTA_DATA(tb
[NDA_DST
]),
116 abuf
, sizeof(abuf
)));
120 __u16 vid
= rta_getattr_u16(tb
[NDA_VLAN
]);
121 fprintf(fp
, "vlan %hu ", vid
);
125 fprintf(fp
, "port %d ", ntohs(rta_getattr_u16(tb
[NDA_PORT
])));
127 fprintf(fp
, "vni %d ", rta_getattr_u32(tb
[NDA_VNI
]));
128 if (tb
[NDA_IFINDEX
]) {
129 unsigned int ifindex
= rta_getattr_u32(tb
[NDA_IFINDEX
]);
132 char ifname
[IF_NAMESIZE
];
134 if (if_indextoname(ifindex
, ifname
))
135 fprintf(fp
, "via %s ", ifname
);
137 fprintf(fp
, "via ifindex %u ", ifindex
);
141 if (show_stats
&& tb
[NDA_CACHEINFO
]) {
142 struct nda_cacheinfo
*ci
= RTA_DATA(tb
[NDA_CACHEINFO
]);
143 int hz
= get_user_hz();
145 fprintf(fp
, " used %d/%d", ci
->ndm_used
/hz
,
148 if (r
->ndm_flags
& NTF_SELF
)
149 fprintf(fp
, "self ");
151 fprintf(fp
, "master %s ",
152 ll_index_to_name(rta_getattr_u32(tb
[NDA_MASTER
])));
153 else if (r
->ndm_flags
& NTF_MASTER
)
154 fprintf(fp
, "master ");
155 if (r
->ndm_flags
& NTF_ROUTER
)
156 fprintf(fp
, "router ");
158 fprintf(fp
, "%s\n", state_n2a(r
->ndm_state
));
162 static int fdb_show(int argc
, char **argv
)
164 char *filter_dev
= NULL
;
167 if (strcmp(*argv
, "dev") == 0) {
170 duparg("dev", *argv
);
177 filter_index
= if_nametoindex(filter_dev
);
178 if (filter_index
== 0) {
179 fprintf(stderr
, "Cannot find device \"%s\"\n",
185 if (rtnl_wilddump_request(&rth
, PF_BRIDGE
, RTM_GETNEIGH
) < 0) {
186 perror("Cannot send dump request");
190 if (rtnl_dump_filter(&rth
, print_fdb
, stdout
) < 0) {
191 fprintf(stderr
, "Dump terminated\n");
198 static int fdb_modify(int cmd
, int flags
, int argc
, char **argv
)
210 unsigned long port
= 0;
211 unsigned long vni
= ~0;
212 unsigned int via
= 0;
216 memset(&req
, 0, sizeof(req
));
218 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ndmsg
));
219 req
.n
.nlmsg_flags
= NLM_F_REQUEST
|flags
;
220 req
.n
.nlmsg_type
= cmd
;
221 req
.ndm
.ndm_family
= PF_BRIDGE
;
222 req
.ndm
.ndm_state
= NUD_NOARP
;
225 if (strcmp(*argv
, "dev") == 0) {
228 } else if (strcmp(*argv
, "dst") == 0) {
231 duparg2("dst", *argv
);
232 get_addr(&dst
, *argv
, preferred_family
);
234 } else if (strcmp(*argv
, "port") == 0) {
237 port
= strtoul(*argv
, &endptr
, 0);
238 if (endptr
&& *endptr
) {
241 pse
= getservbyname(*argv
, "udp");
243 invarg("invalid port\n", *argv
);
244 port
= ntohs(pse
->s_port
);
245 } else if (port
> 0xffff)
246 invarg("invalid port\n", *argv
);
247 } else if (strcmp(*argv
, "vni") == 0) {
249 vni
= strtoul(*argv
, &endptr
, 0);
250 if ((endptr
&& *endptr
) ||
251 (vni
>> 24) || vni
== ULONG_MAX
)
252 invarg("invalid VNI\n", *argv
);
253 } else if (strcmp(*argv
, "via") == 0) {
255 via
= if_nametoindex(*argv
);
257 invarg("invalid device\n", *argv
);
258 } else if (strcmp(*argv
, "self") == 0) {
259 req
.ndm
.ndm_flags
|= NTF_SELF
;
260 } else if (matches(*argv
, "master") == 0) {
261 req
.ndm
.ndm_flags
|= NTF_MASTER
;
262 } else if (matches(*argv
, "router") == 0) {
263 req
.ndm
.ndm_flags
|= NTF_ROUTER
;
264 } else if (matches(*argv
, "local") == 0||
265 matches(*argv
, "permanent") == 0) {
266 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
267 } else if (matches(*argv
, "temp") == 0) {
268 req
.ndm
.ndm_state
|= NUD_REACHABLE
;
269 } else if (matches(*argv
, "vlan") == 0) {
271 duparg2("vlan", *argv
);
275 if (strcmp(*argv
, "to") == 0) {
278 if (matches(*argv
, "help") == 0)
281 duparg2("to", *argv
);
287 if (d
== NULL
|| addr
== NULL
) {
288 fprintf(stderr
, "Device and address are required arguments.\n");
293 if (!(req
.ndm
.ndm_flags
&(NTF_SELF
|NTF_MASTER
)))
294 req
.ndm
.ndm_flags
|= NTF_SELF
;
296 /* Assume permanent */
297 if (!(req
.ndm
.ndm_state
&(NUD_PERMANENT
|NUD_REACHABLE
)))
298 req
.ndm
.ndm_state
|= NUD_PERMANENT
;
300 if (sscanf(addr
, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
301 abuf
, abuf
+1, abuf
+2,
302 abuf
+3, abuf
+4, abuf
+5) != 6) {
303 fprintf(stderr
, "Invalid mac address %s\n", addr
);
307 addattr_l(&req
.n
, sizeof(req
), NDA_LLADDR
, abuf
, ETH_ALEN
);
309 addattr_l(&req
.n
, sizeof(req
), NDA_DST
, &dst
.data
, dst
.bytelen
);
312 addattr16(&req
.n
, sizeof(req
), NDA_VLAN
, vid
);
315 unsigned short dport
;
317 dport
= htons((unsigned short)port
);
318 addattr16(&req
.n
, sizeof(req
), NDA_PORT
, dport
);
321 addattr32(&req
.n
, sizeof(req
), NDA_VNI
, vni
);
323 addattr32(&req
.n
, sizeof(req
), NDA_IFINDEX
, via
);
325 req
.ndm
.ndm_ifindex
= ll_name_to_index(d
);
326 if (req
.ndm
.ndm_ifindex
== 0) {
327 fprintf(stderr
, "Cannot find device \"%s\"\n", d
);
331 if (rtnl_talk(&rth
, &req
.n
, 0, 0, NULL
) < 0)
337 int do_fdb(int argc
, char **argv
)
342 if (matches(*argv
, "add") == 0)
343 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_EXCL
, argc
-1, argv
+1);
344 if (matches(*argv
, "append") == 0)
345 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_APPEND
, argc
-1, argv
+1);
346 if (matches(*argv
, "replace") == 0)
347 return fdb_modify(RTM_NEWNEIGH
, NLM_F_CREATE
|NLM_F_REPLACE
, argc
-1, argv
+1);
348 if (matches(*argv
, "delete") == 0)
349 return fdb_modify(RTM_DELNEIGH
, 0, argc
-1, argv
+1);
350 if (matches(*argv
, "show") == 0 ||
351 matches(*argv
, "lst") == 0 ||
352 matches(*argv
, "list") == 0)
353 return fdb_show(argc
-1, argv
+1);
354 if (matches(*argv
, "help") == 0)
357 return fdb_show(0, NULL
);
359 fprintf(stderr
, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv
);