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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/gred.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/gred.c')
-rw-r--r--src/network/tc/gred.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/src/network/tc/gred.c b/src/network/tc/gred.c
new file mode 100644
index 0000000..476122c
--- /dev/null
+++ b/src/network/tc/gred.c
@@ -0,0 +1,193 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright © 2020 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 generic_random_early_detection_init(QDisc *qdisc) {
+ GenericRandomEarlyDetection *gred;
+
+ assert(qdisc);
+
+ gred = GRED(qdisc);
+
+ gred->grio = -1;
+
+ return 0;
+}
+
+static int generic_random_early_detection_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ GenericRandomEarlyDetection *gred;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ assert_se(gred = GRED(qdisc));
+
+ const struct tc_gred_sopt opt = {
+ .DPs = gred->virtual_queues,
+ .def_DP = gred->default_virtual_queue,
+ .grio = gred->grio,
+ };
+
+ r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "gred");
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_append_data(req, TCA_GRED_DPS, &opt, sizeof(opt));
+ if (r < 0)
+ return r;
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int generic_random_early_detection_verify(QDisc *qdisc) {
+ GenericRandomEarlyDetection *gred = GRED(qdisc);
+
+ if (gred->default_virtual_queue >= gred->virtual_queues)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: DefaultVirtualQueue= must be less than VirtualQueues=. "
+ "Ignoring [GenericRandomEarlyDetection] section from line %u.",
+ qdisc->section->filename, qdisc->section->line);
+
+ return 0;
+}
+
+int config_parse_generic_random_early_detection_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;
+ GenericRandomEarlyDetection *gred;
+ Network *network = ASSERT_PTR(data);
+ uint32_t *p;
+ uint32_t v;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_GRED, 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;
+ }
+
+ gred = GRED(qdisc);
+
+ if (streq(lvalue, "VirtualQueues"))
+ p = &gred->virtual_queues;
+ else if (streq(lvalue, "DefaultVirtualQueue"))
+ p = &gred->default_virtual_queue;
+ else
+ assert_not_reached();
+
+ if (isempty(rvalue)) {
+ *p = 0;
+
+ TAKE_PTR(qdisc);
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &v);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ if (v > MAX_DPs)
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+
+ *p = v;
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+int config_parse_generic_random_early_detection_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;
+ GenericRandomEarlyDetection *gred;
+ Network *network = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_GRED, 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;
+ }
+
+ gred = GRED(qdisc);
+
+ if (isempty(rvalue)) {
+ gred->grio = -1;
+
+ TAKE_PTR(qdisc);
+ 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;
+ }
+
+ gred->grio = r;
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+
+const QDiscVTable gred_vtable = {
+ .object_size = sizeof(GenericRandomEarlyDetection),
+ .tca_kind = "gred",
+ .init = generic_random_early_detection_init,
+ .fill_message = generic_random_early_detection_fill_message,
+ .verify = generic_random_early_detection_verify,
+};