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-rw-r--r--tc/q_fifo.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/tc/q_fifo.c b/tc/q_fifo.c
new file mode 100644
index 0000000..ce82e74
--- /dev/null
+++ b/tc/q_fifo.c
@@ -0,0 +1,99 @@
+/*
+ * q_fifo.c FIFO.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * 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,
+};