1 files changed, 80 insertions, 1 deletions

diff --git a/ip/iplink.c b/ip/iplink.c
index 212a0885..bf90fad1 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -111,7 +111,9 @@ void iplink_usage(void)
 		"\n"
 		"	ip link xstats type TYPE [ ARGS ]\n"
 		"\n"
-		"	ip link afstats [ dev DEVICE ]\n");
+		"	ip link afstats [ dev DEVICE ]\n"
+		"	ip link property add dev DEVICE [ altname NAME .. ]\n"
+		"	ip link property del dev DEVICE [ altname NAME .. ]\n");
 
 	if (iplink_have_newlink()) {
 		fprintf(stderr,
@@ -1617,6 +1619,80 @@ static int iplink_afstats(int argc, char **argv)
 	return 0;
 }
 
+static int iplink_prop_mod(int argc, char **argv, struct iplink_req *req)
+{
+	struct rtattr *proplist;
+	char *dev = NULL;
+	char *name;
+
+	proplist = addattr_nest(&req->n, sizeof(*req),
+				IFLA_PROP_LIST | NLA_F_NESTED);
+
+	while (argc > 0) {
+		if (matches(*argv, "altname") == 0) {
+			NEXT_ARG();
+			if (check_altifname(*argv))
+				invarg("not a valid altname", *argv);
+			name = *argv;
+			addattr_l(&req->n, sizeof(*req), IFLA_ALT_IFNAME,
+				  name, strlen(name) + 1);
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		} else {
+			if (strcmp(*argv, "dev") == 0)
+				NEXT_ARG();
+			if (dev)
+				duparg2("dev", *argv);
+			if (check_altifname(*argv))
+				invarg("\"dev\" not a valid ifname", *argv);
+			dev = *argv;
+		}
+		argv++; argc--;
+	}
+	addattr_nest_end(&req->n, proplist);
+
+	if (!dev) {
+		fprintf(stderr, "Not enough of information: \"dev\" argument is required.\n");
+		exit(-1);
+	}
+
+	req->i.ifi_index = ll_name_to_index(dev);
+	if (!req->i.ifi_index)
+		return nodev(dev);
+
+	if (rtnl_talk(&rth, &req->n, NULL) < 0)
+		return -2;
+
+	return 0;
+}
+
+static int iplink_prop(int argc, char **argv)
+{
+	struct iplink_req req = {
+		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+		.n.nlmsg_flags = NLM_F_REQUEST,
+		.i.ifi_family = preferred_family,
+	};
+
+	if (argc <= 0) {
+		usage();
+		exit(-1);
+	}
+
+	if (matches(*argv, "add") == 0) {
+		req.n.nlmsg_flags |= NLM_F_EXCL | NLM_F_CREATE | NLM_F_APPEND;
+		req.n.nlmsg_type = RTM_NEWLINKPROP;
+	} else if (matches(*argv, "del") == 0) {
+		req.n.nlmsg_type = RTM_DELLINKPROP;
+	} else if (matches(*argv, "help") == 0) {
+		usage();
+	} else {
+		fprintf(stderr, "Operator required\n");
+		exit(-1);
+	}
+	return iplink_prop_mod(argc - 1, argv + 1, &req);
+}
+
 static void do_help(int argc, char **argv)
 {
 	struct link_util *lu = NULL;
@@ -1674,6 +1750,9 @@ int do_iplink(int argc, char **argv)
 		return 0;
 	}
 
+	if (matches(*argv, "property") == 0)
+		return iplink_prop(argc-1, argv+1);
+
 	if (matches(*argv, "help") == 0) {
 		do_help(argc-1, argv+1);
 		return 0;