1 files changed, 94 insertions, 0 deletions
diff --git a/tc/q_fifo.c b/tc/q_fifo.c
new file mode 100644
index 0000000..9b2c534
--- /dev/null
+++ b/tc/q_fifo.c
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * q_fifo.c		FIFO.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+	fprintf(stderr, "Usage: ... <[p|b]fifo | pfifo_head_drop> [ limit NUMBER ]\n");
+}
+
+static int fifo_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+			  struct nlmsghdr *n, const char *dev)
+{
+	int ok = 0;
+	struct tc_fifo_qopt opt = {};
+
+	while (argc > 0) {
+		if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.limit, *argv)) {
+				fprintf(stderr, "%s: Illegal value for \"limit\": \"%s\"\n", qu->id, *argv);
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "%s: unknown parameter \"%s\"\n", qu->id, *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	if (ok)
+		addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
+	return 0;
+}
+
+static int fifo_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	struct tc_fifo_qopt *qopt;
+
+	if (opt == NULL)
+		return 0;
+
+	if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
+		return -1;
+	qopt = RTA_DATA(opt);
+	if (strcmp(qu->id, "bfifo") == 0)
+		print_size(PRINT_ANY, "limit", "limit %s", qopt->limit);
+	else
+		print_uint(PRINT_ANY, "limit", "limit %up", qopt->limit);
+	return 0;
+}
+
+
+struct qdisc_util bfifo_qdisc_util = {
+	.id = "bfifo",
+	.parse_qopt = fifo_parse_opt,
+	.print_qopt = fifo_print_opt,
+};
+
+struct qdisc_util pfifo_qdisc_util = {
+	.id = "pfifo",
+	.parse_qopt = fifo_parse_opt,
+	.print_qopt = fifo_print_opt,
+};
+
+struct qdisc_util pfifo_head_drop_qdisc_util = {
+	.id = "pfifo_head_drop",
+	.parse_qopt = fifo_parse_opt,
+	.print_qopt = fifo_print_opt,
+};
+
+struct qdisc_util pfifo_fast_qdisc_util = {
+	.id = "pfifo_fast",
+	.print_qopt = prio_print_opt,
+};