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Date: Fri, 7 Dec 2007 16:29:51 -0800
From: Stephen Hemminger <shemminger@...ux-foundation.org>
To: "David S. Miller" <davem@...emloft.net>
Cc: Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org
Subject: [PATCH iproute2] rlim qdisc support.
Setup code for new rlim qdisc. For use by anyone who wants to
test rlim before kernel inclusion.
Signed-off-by: Stephen Hemminger <shemminger@...ux-foundation.org>
---
include/linux/pkt_sched.h | 6 ++
tc/Makefile | 1 +
tc/q_rlim.c | 115 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 122 insertions(+), 0 deletions(-)
create mode 100644 tc/q_rlim.c
diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
index 919af93..7973dc4 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -475,4 +475,10 @@ struct tc_netem_corrupt
#define NETEM_DIST_SCALE 8192
+struct tc_rlim_qopt
+{
+ __u32 limit; /* fifo limit (packets) */
+ __u32 rate; /* bits per sec */
+};
+
#endif
diff --git a/tc/Makefile b/tc/Makefile
index a715566..e46954d 100644
--- a/tc/Makefile
+++ b/tc/Makefile
@@ -13,6 +13,7 @@ TCMODULES += q_tbf.o
TCMODULES += q_cbq.o
TCMODULES += q_rr.o
TCMODULES += q_netem.o
+TCMODULES += q_rlim.o
TCMODULES += f_rsvp.o
TCMODULES += f_u32.o
TCMODULES += f_route.o
diff --git a/tc/q_rlim.c b/tc/q_rlim.c
new file mode 100644
index 0000000..5f634a8
--- /dev/null
+++ b/tc/q_rlim.c
@@ -0,0 +1,115 @@
+/*
+ * q_rlim.c RLIM.
+ *
+ * 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: Stephen Hemminger <shemminger@...ux-foundation.org>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.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: ... rlim limit PACKETS rate KBPS\n");
+}
+
+static void explain1(char *arg)
+{
+ fprintf(stderr, "Illegal \"%s\"\n", arg);
+}
+
+
+#define usage() return(-1)
+
+static int rlim_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
+{
+ struct tc_rlim_qopt opt;
+ unsigned x;
+
+ memset(&opt, 0, sizeof(opt));
+
+ while (argc > 0) {
+ if (matches(*argv, "limit") == 0) {
+ NEXT_ARG();
+ if (opt.limit) {
+ fprintf(stderr, "Double \"limit\" spec\n");
+ return -1;
+ }
+ if (get_size(&opt.limit, *argv)) {
+ explain1("limit");
+ return -1;
+ }
+ } else if (strcmp(*argv, "rate") == 0) {
+ NEXT_ARG();
+ if (opt.rate) {
+ fprintf(stderr, "Double \"rate\" spec\n");
+ return -1;
+ }
+
+ if (get_rate(&x, *argv)) {
+ explain1("rate");
+ return -1;
+ }
+ opt.rate = x;
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--; argv++;
+ }
+
+ if (opt.rate == 0) {
+ fprintf(stderr, "\"rate\" is required.\n");
+ return -1;
+ }
+
+ if (opt.limit == 0) {
+ fprintf(stderr, "\"limit\" is required.\n");
+ return -1;
+ }
+
+ addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
+ return 0;
+}
+
+static int rlim_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct tc_rlim_qopt *qopt;
+ SPRINT_BUF(b1);
+
+ if (opt == NULL)
+ return 0;
+
+ if (RTA_PAYLOAD(opt) < sizeof(*qopt))
+ return -1;
+ qopt = RTA_DATA(opt);
+ fprintf(f, "limit %up rate %s", qopt->limit, sprint_rate(qopt->rate, b1));
+
+ return 0;
+}
+
+struct qdisc_util rlim_qdisc_util = {
+ .id = "rlim",
+ .parse_qopt = rlim_parse_opt,
+ .print_qopt = rlim_print_opt,
+};
+
--
1.5.3.4
--
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