Adding upstream version 6.1.0.upstream/6.1.0upstream

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

1 files changed, 230 insertions, 0 deletions

diff --git a/tc/q_codel.c b/tc/q_codel.c
new file mode 100644
index 0000000..c72a577
--- /dev/null
+++ b/tc/q_codel.c
@@ -0,0 +1,230 @@
+/*
+ * Codel - The Controlled-Delay Active Queue Management algorithm
+ *
+ *  Copyright (C) 2011-2012 Kathleen Nichols <nichols@pollere.com>
+ *  Copyright (C) 2011-2012 Van Jacobson <van@pollere.com>
+ *  Copyright (C) 2012 Michael D. Taht <dave.taht@bufferbloat.net>
+ *  Copyright (C) 2012,2015 Eric Dumazet <edumazet@google.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the authors may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#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: ... codel [ limit PACKETS ] [ target TIME ]\n"
+		"		 [ interval TIME ] [ ecn | noecn ]\n"
+		"		 [ ce_threshold TIME ]\n");
+}
+
+static int codel_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+			   struct nlmsghdr *n, const char *dev)
+{
+	unsigned int limit = 0;
+	unsigned int target = 0;
+	unsigned int interval = 0;
+	unsigned int ce_threshold = ~0U;
+	int ecn = -1;
+	struct rtattr *tail;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_unsigned(&limit, *argv, 0)) {
+				fprintf(stderr, "Illegal \"limit\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "target") == 0) {
+			NEXT_ARG();
+			if (get_time(&target, *argv)) {
+				fprintf(stderr, "Illegal \"target\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "ce_threshold") == 0) {
+			NEXT_ARG();
+			if (get_time(&ce_threshold, *argv)) {
+				fprintf(stderr, "Illegal \"ce_threshold\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "interval") == 0) {
+			NEXT_ARG();
+			if (get_time(&interval, *argv)) {
+				fprintf(stderr, "Illegal \"interval\"\n");
+				return -1;
+			}
+		} else if (strcmp(*argv, "ecn") == 0) {
+			ecn = 1;
+		} else if (strcmp(*argv, "noecn") == 0) {
+			ecn = 0;
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	tail = addattr_nest(n, 1024, TCA_OPTIONS);
+	if (limit)
+		addattr_l(n, 1024, TCA_CODEL_LIMIT, &limit, sizeof(limit));
+	if (interval)
+		addattr_l(n, 1024, TCA_CODEL_INTERVAL, &interval, sizeof(interval));
+	if (target)
+		addattr_l(n, 1024, TCA_CODEL_TARGET, &target, sizeof(target));
+	if (ecn != -1)
+		addattr_l(n, 1024, TCA_CODEL_ECN, &ecn, sizeof(ecn));
+	if (ce_threshold != ~0U)
+		addattr_l(n, 1024, TCA_CODEL_CE_THRESHOLD,
+			  &ce_threshold, sizeof(ce_threshold));
+
+	addattr_nest_end(n, tail);
+	return 0;
+}
+
+static int codel_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	struct rtattr *tb[TCA_CODEL_MAX + 1];
+	unsigned int limit;
+	unsigned int interval;
+	unsigned int target;
+	unsigned int ecn;
+	unsigned int ce_threshold;
+
+	SPRINT_BUF(b1);
+
+	if (opt == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_CODEL_MAX, opt);
+
+	if (tb[TCA_CODEL_LIMIT] &&
+	    RTA_PAYLOAD(tb[TCA_CODEL_LIMIT]) >= sizeof(__u32)) {
+		limit = rta_getattr_u32(tb[TCA_CODEL_LIMIT]);
+		print_uint(PRINT_ANY, "limit", "limit %up ", limit);
+	}
+	if (tb[TCA_CODEL_TARGET] &&
+	    RTA_PAYLOAD(tb[TCA_CODEL_TARGET]) >= sizeof(__u32)) {
+		target = rta_getattr_u32(tb[TCA_CODEL_TARGET]);
+		print_uint(PRINT_JSON, "target", NULL, target);
+		print_string(PRINT_FP, NULL, "target %s ",
+			     sprint_time(target, b1));
+	}
+	if (tb[TCA_CODEL_CE_THRESHOLD] &&
+	    RTA_PAYLOAD(tb[TCA_CODEL_CE_THRESHOLD]) >= sizeof(__u32)) {
+		ce_threshold = rta_getattr_u32(tb[TCA_CODEL_CE_THRESHOLD]);
+		print_uint(PRINT_JSON, "ce_threshold", NULL, ce_threshold);
+		print_string(PRINT_FP, NULL, "ce_threshold %s ",
+			     sprint_time(ce_threshold, b1));
+	}
+	if (tb[TCA_CODEL_INTERVAL] &&
+	    RTA_PAYLOAD(tb[TCA_CODEL_INTERVAL]) >= sizeof(__u32)) {
+		interval = rta_getattr_u32(tb[TCA_CODEL_INTERVAL]);
+		print_uint(PRINT_JSON, "interval", NULL, interval);
+		print_string(PRINT_FP, NULL, "interval %s ",
+			     sprint_time(interval, b1));
+	}
+	if (tb[TCA_CODEL_ECN] &&
+	    RTA_PAYLOAD(tb[TCA_CODEL_ECN]) >= sizeof(__u32)) {
+		ecn = rta_getattr_u32(tb[TCA_CODEL_ECN]);
+		if (ecn)
+			print_bool(PRINT_ANY, "ecn", "ecn ", true);
+	}
+
+	return 0;
+}
+
+static int codel_print_xstats(struct qdisc_util *qu, FILE *f,
+			      struct rtattr *xstats)
+{
+	struct tc_codel_xstats _st = {}, *st;
+
+	SPRINT_BUF(b1);
+
+	if (xstats == NULL)
+		return 0;
+
+	st = RTA_DATA(xstats);
+	if (RTA_PAYLOAD(xstats) < sizeof(*st)) {
+		memcpy(&_st, st, RTA_PAYLOAD(xstats));
+		st = &_st;
+	}
+
+	print_uint(PRINT_ANY, "count", "  count %u", st->count);
+	print_uint(PRINT_ANY, "lastcount", " lastcount %u", st->lastcount);
+	print_uint(PRINT_JSON, "ldelay", NULL, st->ldelay);
+	print_string(PRINT_FP, NULL, " ldelay %s", sprint_time(st->ldelay, b1));
+
+	if (st->dropping)
+		print_bool(PRINT_ANY, "dropping", " dropping", true);
+
+	print_int(PRINT_JSON, "drop_next", NULL, st->drop_next);
+	if (st->drop_next < 0)
+		print_string(PRINT_FP, NULL, " drop_next -%s",
+			     sprint_time(-st->drop_next, b1));
+	else
+		print_string(PRINT_FP, NULL, " drop_next %s",
+			     sprint_time(st->drop_next, b1));
+
+	print_nl();
+	print_uint(PRINT_ANY, "maxpacket", "  maxpacket %u", st->maxpacket);
+	print_uint(PRINT_ANY, "ecn_mark", " ecn_mark %u", st->ecn_mark);
+	print_uint(PRINT_ANY, "drop_overlimit", " drop_overlimit %u",
+		   st->drop_overlimit);
+
+	if (st->ce_mark)
+		print_uint(PRINT_ANY, "ce_mark", " ce_mark %u", st->ce_mark);
+
+	return 0;
+
+}
+
+struct qdisc_util codel_qdisc_util = {
+	.id		= "codel",
+	.parse_qopt	= codel_parse_opt,
+	.print_qopt	= codel_print_opt,
+	.print_xstats	= codel_print_xstats,
+};