diff --git a/ip/iplink_vxlan.c b/ip/iplink_vxlan.c
index 1025326..3450135 100644
--- a/ip/iplink_vxlan.c
+++ b/ip/iplink_vxlan.c
@@ -25,8 +25,8 @@ static void explain(void)
{
fprintf(stderr, "Usage: ... vxlan id VNI [ group ADDR ] [ local ADDR ]\n");
fprintf(stderr, " [ ttl TTL ] [ tos TOS ] [ dev PHYS_DEV ]\n");
- fprintf(stderr, " [ port MIN MAX ] [ [no]learning ]\n");
- fprintf(stderr, " [ [no]proxy ] [ [no]rsc ]\n");
+ fprintf(stderr, " [ dstport PORT ] [ srcport MIN MAX ]\n");
+ fprintf(stderr, " [ [no]learning ] [ [no]proxy ] [ [no]rsc ]\n");
fprintf(stderr, " [ [no]l2miss ] [ [no]l3miss ]\n");
fprintf(stderr, "\n");
fprintf(stderr, "Where: VNI := 0-16777215\n");
@@ -53,6 +53,8 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
__u8 noage = 0;
__u32 age = 0;
__u32 maxaddr = 0;
+ __u16 dstport = 0;
+ int dst_port_set = 0;
struct ifla_vxlan_port_range range = { 0, 0 };
while (argc > 0) {
@@ -115,7 +117,8 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
maxaddr = 0;
else if (get_u32(&maxaddr, *argv, 0))
invarg("max addresses", *argv);
- } else if (!matches(*argv, "port")) {
+ } else if (!matches(*argv, "port") ||
+ !matches(*argv, "srcport")) {
__u16 minport, maxport;
NEXT_ARG();
if (get_u16(&minport, *argv, 0))
@@ -125,6 +128,11 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
invarg("max port", *argv);
range.low = htons(minport);
range.high = htons(maxport);
+ } else if (!matches(*argv, "dstport")){
+ NEXT_ARG();
+ if (get_u16(&dstport, *argv, 0))
+ invarg("dst port", *argv);
+ dst_port_set = 1;
} else if (!matches(*argv, "nolearning")) {
learning = 0;
} else if (!matches(*argv, "learning")) {
@@ -160,6 +168,15 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
fprintf(stderr, "vxlan: missing virtual network identifier\n");
return -1;
}
+
+ if (!dst_port_set) {
+ fprintf(stderr, "vxlan: destination port not specified\n"
+ "Will use Linux kernel default (non-standard value)\n");
+ fprintf(stderr,
+ "Use 'dstport 4789' to get the IANA assigned value\n"
+ "Use 'dstport 0' to get default and quiet this message\n");
+ }
+
addattr32(n, 1024, IFLA_VXLAN_ID, vni);
if (gaddr)
addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
@@ -184,6 +201,9 @@ static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
&range, sizeof(range));
+ if (dstport)
+ addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));
+
return 0;
}
@@ -233,9 +253,13 @@ static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
if (tb[IFLA_VXLAN_PORT_RANGE]) {
const struct ifla_vxlan_port_range *r
= RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
- fprintf(f, "port %u %u ", ntohs(r->low), ntohs(r->high));
+ fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high));
}
+ if (tb[IFLA_VXLAN_PORT])
+ fprintf(f, "dstport %u ",
+ ntohs(rta_getattr_u16(tb[IFLA_VXLAN_PORT])));
+
if (tb[IFLA_VXLAN_LEARNING] &&
!rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]))
fputs("nolearning ", f);