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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /src/network/tc/codel.c
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/network/tc/codel.c')
-rw-r--r--src/network/tc/codel.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/src/network/tc/codel.c b/src/network/tc/codel.c
new file mode 100644
index 0000000..b5f95f7
--- /dev/null
+++ b/src/network/tc/codel.c
@@ -0,0 +1,252 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright © 2019 VMware, Inc. */
+
+#include <linux/pkt_sched.h>
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "netlink-util.h"
+#include "parse-util.h"
+#include "qdisc.h"
+#include "string-util.h"
+
+static int controlled_delay_init(QDisc *qdisc) {
+ ControlledDelay *cd;
+
+ assert(qdisc);
+
+ cd = CODEL(qdisc);
+
+ cd->ce_threshold_usec = USEC_INFINITY;
+ cd->ecn = -1;
+
+ return 0;
+}
+
+static int controlled_delay_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ ControlledDelay *cd;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ assert_se(cd = CODEL(qdisc));
+
+ r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "codel");
+ if (r < 0)
+ return r;
+
+ if (cd->packet_limit > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_CODEL_LIMIT, cd->packet_limit);
+ if (r < 0)
+ return r;
+ }
+
+ if (cd->interval_usec > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_CODEL_INTERVAL, cd->interval_usec);
+ if (r < 0)
+ return r;
+ }
+
+ if (cd->target_usec > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_CODEL_TARGET, cd->target_usec);
+ if (r < 0)
+ return r;
+ }
+
+ if (cd->ecn >= 0) {
+ r = sd_netlink_message_append_u32(req, TCA_CODEL_ECN, cd->ecn);
+ if (r < 0)
+ return r;
+ }
+
+ if (cd->ce_threshold_usec != USEC_INFINITY) {
+ r = sd_netlink_message_append_u32(req, TCA_CODEL_CE_THRESHOLD, cd->ce_threshold_usec);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int config_parse_controlled_delay_u32(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+ ControlledDelay *cd;
+ Network *network = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+ return 0;
+ }
+
+ cd = CODEL(qdisc);
+
+ if (isempty(rvalue)) {
+ cd->packet_limit = 0;
+
+ qdisc = NULL;
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &cd->packet_limit);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ qdisc = NULL;
+
+ return 0;
+}
+
+int config_parse_controlled_delay_usec(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+ ControlledDelay *cd;
+ Network *network = ASSERT_PTR(data);
+ usec_t *p;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+ return 0;
+ }
+
+ cd = CODEL(qdisc);
+
+ if (streq(lvalue, "TargetSec"))
+ p = &cd->target_usec;
+ else if (streq(lvalue, "IntervalSec"))
+ p = &cd->interval_usec;
+ else if (streq(lvalue, "CEThresholdSec"))
+ p = &cd->ce_threshold_usec;
+ else
+ assert_not_reached();
+
+ if (isempty(rvalue)) {
+ if (streq(lvalue, "CEThresholdSec"))
+ *p = USEC_INFINITY;
+ else
+ *p = 0;
+
+ qdisc = NULL;
+ return 0;
+ }
+
+ r = parse_sec(rvalue, p);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ qdisc = NULL;
+
+ return 0;
+}
+
+int config_parse_controlled_delay_bool(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+ ControlledDelay *cd;
+ Network *network = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_CODEL, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+ return 0;
+ }
+
+ cd = CODEL(qdisc);
+
+ if (isempty(rvalue)) {
+ cd->ecn = -1;
+
+ qdisc = NULL;
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ cd->ecn = r;
+ qdisc = NULL;
+
+ return 0;
+}
+
+const QDiscVTable codel_vtable = {
+ .object_size = sizeof(ControlledDelay),
+ .tca_kind = "codel",
+ .init = controlled_delay_init,
+ .fill_message = controlled_delay_fill_message,
+};