Adding upstream version 6.1.0.upstream/6.1.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 219 insertions, 0 deletions

diff --git a/tc/q_sfb.c b/tc/q_sfb.c
new file mode 100644
index 0000000..8af55d9
--- /dev/null
+++ b/tc/q_sfb.c
@@ -0,0 +1,219 @@
+/*
+ * q_sfb.c	Stochastic Fair Blue.
+ *
+ *		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:	Juliusz Chroboczek <jch@pps.jussieu.fr>
+ *
+ */
+
+
+
+#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: ... sfb [ rehash SECS ] [ db SECS ]\n"
+		"	    [ limit PACKETS ] [ max PACKETS ] [ target PACKETS ]\n"
+		"	    [ increment FLOAT ] [ decrement FLOAT ]\n"
+		"	    [ penalty_rate PPS ] [ penalty_burst PACKETS ]\n");
+}
+
+static int get_prob(__u32 *val, const char *arg)
+{
+	double d;
+	char *ptr;
+
+	if (!arg || !*arg)
+		return -1;
+	d = strtod(arg, &ptr);
+	if (!ptr || ptr == arg || d < 0.0 || d > 1.0)
+		return -1;
+	*val = (__u32)(d * SFB_MAX_PROB + 0.5);
+	return 0;
+}
+
+static int sfb_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+			 struct nlmsghdr *n, const char *dev)
+{
+	struct tc_sfb_qopt opt = {
+		.rehash_interval = 600*1000,
+		.warmup_time = 60*1000,
+		.penalty_rate = 10,
+		.penalty_burst = 20,
+		.increment = (SFB_MAX_PROB + 1000) / 2000,
+		.decrement = (SFB_MAX_PROB + 10000) / 20000,
+	};
+	struct rtattr *tail;
+
+	while (argc > 0) {
+	    if (strcmp(*argv, "rehash") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.rehash_interval, *argv, 0)) {
+				fprintf(stderr, "Illegal \"rehash\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "db") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.warmup_time, *argv, 0)) {
+				fprintf(stderr, "Illegal \"db\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.limit, *argv, 0)) {
+				fprintf(stderr, "Illegal \"limit\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "max") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.max, *argv, 0)) {
+				fprintf(stderr, "Illegal \"max\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "target") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.bin_size, *argv, 0)) {
+				fprintf(stderr, "Illegal \"target\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "increment") == 0) {
+			NEXT_ARG();
+			if (get_prob(&opt.increment, *argv)) {
+				fprintf(stderr, "Illegal \"increment\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "decrement") == 0) {
+			NEXT_ARG();
+			if (get_prob(&opt.decrement, *argv)) {
+				fprintf(stderr, "Illegal \"decrement\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "penalty_rate") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.penalty_rate, *argv, 0)) {
+				fprintf(stderr, "Illegal \"penalty_rate\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "penalty_burst") == 0) {
+			NEXT_ARG();
+			if (get_u32(&opt.penalty_burst, *argv, 0)) {
+				fprintf(stderr, "Illegal \"penalty_burst\"\n");
+				return -1;
+			}
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	if (opt.max == 0) {
+		if (opt.bin_size >= 1)
+			opt.max = (opt.bin_size * 5 + 1) / 4;
+		else
+			opt.max = 25;
+	}
+	if (opt.bin_size == 0)
+		opt.bin_size = (opt.max * 4 + 3) / 5;
+
+	tail = addattr_nest(n, 1024, TCA_OPTIONS);
+	addattr_l(n, 1024, TCA_SFB_PARMS, &opt, sizeof(opt));
+	addattr_nest_end(n, tail);
+	return 0;
+}
+
+static int sfb_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	struct rtattr *tb[__TCA_SFB_MAX];
+	struct tc_sfb_qopt *qopt;
+
+	SPRINT_BUF(b1);
+
+	if (opt == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_SFB_MAX, opt);
+	if (tb[TCA_SFB_PARMS] == NULL)
+		return -1;
+	qopt = RTA_DATA(tb[TCA_SFB_PARMS]);
+	if (RTA_PAYLOAD(tb[TCA_SFB_PARMS]) < sizeof(*qopt))
+		return -1;
+
+	print_uint(PRINT_JSON, "rehash", NULL, qopt->rehash_interval * 1000);
+	print_string(PRINT_FP, NULL, "rehash %s ",
+		     sprint_time(qopt->rehash_interval * 1000, b1));
+
+	print_uint(PRINT_JSON, "db", NULL, qopt->warmup_time * 1000);
+	print_string(PRINT_FP, NULL, "db %s ",
+		     sprint_time(qopt->warmup_time * 1000, b1));
+
+	print_uint(PRINT_ANY, "limit", "limit %up ", qopt->limit);
+	print_uint(PRINT_ANY, "max", "max %up ", qopt->max);
+	print_uint(PRINT_ANY, "target", "target %up ", qopt->bin_size);
+
+	print_float(PRINT_ANY, "increment", "increment %lg ",
+		    (double)qopt->increment / SFB_MAX_PROB);
+	print_float(PRINT_ANY, "decrement", "decrement %lg ",
+		    (double)qopt->decrement / SFB_MAX_PROB);
+
+	print_uint(PRINT_ANY, "penalty_rate", "penalty_rate %upps ",
+		   qopt->penalty_rate);
+	print_uint(PRINT_ANY, "penalty_burst", "penalty_burst %up ",
+		   qopt->penalty_burst);
+
+	return 0;
+}
+
+static int sfb_print_xstats(struct qdisc_util *qu, FILE *f,
+			    struct rtattr *xstats)
+{
+	struct tc_sfb_xstats *st;
+
+	if (xstats == NULL)
+		return 0;
+
+	if (RTA_PAYLOAD(xstats) < sizeof(*st))
+		return -1;
+
+	st = RTA_DATA(xstats);
+
+	print_uint(PRINT_ANY, "earlydrop", "  earlydrop %u", st->earlydrop);
+	print_uint(PRINT_ANY, "penaltydrop", " penaltydrop %u",
+		   st->penaltydrop);
+	print_uint(PRINT_ANY, "bucketdrop", " bucketdrop %u", st->bucketdrop);
+	print_uint(PRINT_ANY, "queuedrop", " queuedrop %u", st->queuedrop);
+	print_uint(PRINT_ANY, "childdrop", " childdrop %u", st->childdrop);
+	print_uint(PRINT_ANY, "marked", " marked %u", st->marked);
+	print_nl();
+	print_uint(PRINT_ANY, "maxqlen", "  maxqlen %u", st->maxqlen);
+
+	print_float(PRINT_ANY, "maxprob", " maxprob %lg",
+		    (double)st->maxprob / SFB_MAX_PROB);
+	print_float(PRINT_ANY, "avgprob", " avgprob %lg",
+		    (double)st->avgprob / SFB_MAX_PROB);
+
+	return 0;
+}
+
+struct qdisc_util sfb_qdisc_util = {
+	.id		= "sfb",
+	.parse_qopt	= sfb_parse_opt,
+	.print_qopt	= sfb_print_opt,
+	.print_xstats	= sfb_print_xstats,
+};