1 files changed, 81 insertions, 0 deletions
diff --git a/ip/iplink_rmnet.c b/ip/iplink_rmnet.c
new file mode 100644
index 0000000..1d16440
--- /dev/null
+++ b/ip/iplink_rmnet.c
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * iplink_rmnet.c	RMNET device support
+ *
+ * Authors:     Daniele Palmas <dnlplm@gmail.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "utils.h"
+#include "ip_common.h"
+
+static void print_explain(FILE *f)
+{
+	fprintf(f,
+		"Usage: ... rmnet mux_id MUXID\n"
+		"\n"
+		"MUXID := 1-254\n"
+	);
+}
+
+static void explain(void)
+{
+	print_explain(stderr);
+}
+
+static int rmnet_parse_opt(struct link_util *lu, int argc, char **argv,
+			   struct nlmsghdr *n)
+{
+	__u16 mux_id;
+
+	while (argc > 0) {
+		if (matches(*argv, "mux_id") == 0) {
+			NEXT_ARG();
+			if (get_u16(&mux_id, *argv, 0))
+				invarg("mux_id is invalid", *argv);
+			addattr16(n, 1024, IFLA_RMNET_MUX_ID, mux_id);
+		} else if (matches(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "rmnet: unknown command \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--, argv++;
+	}
+
+	return 0;
+}
+
+static void rmnet_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
+{
+	if (!tb)
+		return;
+
+	if (!tb[IFLA_RMNET_MUX_ID] ||
+	    RTA_PAYLOAD(tb[IFLA_RMNET_MUX_ID]) < sizeof(__u16))
+		return;
+
+	print_uint(PRINT_ANY,
+		   "mux_id",
+		   "mux_id %u ",
+		   rta_getattr_u16(tb[IFLA_RMNET_MUX_ID]));
+}
+
+static void rmnet_print_help(struct link_util *lu, int argc, char **argv,
+			     FILE *f)
+{
+	print_explain(f);
+}
+
+struct link_util rmnet_link_util = {
+	.id		= "rmnet",
+	.maxattr	= IFLA_RMNET_MAX,
+	.parse_opt	= rmnet_parse_opt,
+	.print_opt	= rmnet_print_opt,
+	.print_help	= rmnet_print_help,
+};