generalize VXLAN forwarding tables
This is the iproute2 support allowing an administrator to specify alternate
ports, vnis and outgoing interfaces for VXLAN device forwarding tables.
Signed-Off-By: David L Stevens <dlstevens@us.ibm.com>
diff --git a/bridge/fdb.c b/bridge/fdb.c
index 4ca4861..ba4660b 100644
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -9,6 +9,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <netdb.h>
#include <time.h>
#include <fcntl.h>
#include <sys/socket.h>
@@ -29,7 +30,7 @@
static void usage(void)
{
- fprintf(stderr, "Usage: bridge fdb { add | del } ADDR dev DEV {self|master} [ temp ] [ dst IPADDR]\n");
+ fprintf(stderr, "Usage: bridge fdb { add | del } ADDR dev DEV {self|master} [ temp ] [ dst IPADDR] [port PORT] [vni VNI] [via DEV]\n");
fprintf(stderr, " bridge fdb {show} [ dev DEV ]\n");
exit(-1);
}
@@ -107,6 +108,23 @@
abuf, sizeof(abuf)));
}
+ if (tb[NDA_PORT])
+ fprintf(fp, "port %d ", rta_getattr_u32(tb[NDA_PORT]));
+ if (tb[NDA_VNI])
+ fprintf(fp, "vni %d ", rta_getattr_u32(tb[NDA_VNI]));
+ if (tb[NDA_IFINDEX]) {
+ unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
+
+ if (ifindex) {
+ char ifname[IF_NAMESIZE];
+
+ if (if_indextoname(ifindex, ifname))
+ fprintf(fp, "via %s ", ifname);
+ else
+ fprintf(fp, "via ifindex %u ", ifindex);
+ }
+ }
+
if (show_stats && tb[NDA_CACHEINFO]) {
struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
int hz = get_user_hz();
@@ -171,6 +189,10 @@
char abuf[ETH_ALEN];
int dst_ok = 0;
inet_prefix dst;
+ unsigned long port = 0;
+ unsigned long vni = ~0;
+ unsigned int via = 0;
+ char *endptr;
memset(&req, 0, sizeof(req));
@@ -190,6 +212,29 @@
duparg2("dst", *argv);
get_addr(&dst, *argv, preferred_family);
dst_ok = 1;
+ } else if (strcmp(*argv, "port") == 0) {
+
+ NEXT_ARG();
+ port = strtoul(*argv, &endptr, 0);
+ if (endptr && *endptr) {
+ struct servent *pse;
+
+ pse = getservbyname(*argv, "udp");
+ if (!pse)
+ invarg("invalid port\n", *argv);
+ } else if (port > 0xffff)
+ invarg("invalid port\n", *argv);
+ } else if (strcmp(*argv, "vni") == 0) {
+ NEXT_ARG();
+ vni = strtoul(*argv, &endptr, 0);
+ if ((endptr && *endptr) ||
+ (vni >> 24) || vni == ULONG_MAX)
+ invarg("invalid VNI\n", *argv);
+ } else if (strcmp(*argv, "via") == 0) {
+ NEXT_ARG();
+ via = if_nametoindex(*argv);
+ if (via == 0)
+ invarg("invalid device\n", *argv);
} else if (strcmp(*argv, "self") == 0) {
req.ndm.ndm_flags |= NTF_SELF;
} else if (matches(*argv, "master") == 0) {
@@ -236,6 +281,13 @@
if (dst_ok)
addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
+ if (port)
+ addattr32(&req.n, sizeof(req), NDA_PORT, port);
+ if (vni != ~0)
+ addattr32(&req.n, sizeof(req), NDA_VNI, vni);
+ if (via)
+ addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
+
req.ndm.ndm_ifindex = ll_name_to_index(d);
if (req.ndm.ndm_ifindex == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n", d);
@@ -255,6 +307,8 @@
if (argc > 0) {
if (matches(*argv, "add") == 0)
return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
+ if (matches(*argv, "append") == 0)
+ return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_APPEND, argc-1, argv+1);
if (matches(*argv, "delete") == 0)
return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
if (matches(*argv, "show") == 0 ||
