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-rw-r--r--src/network/tc/fq-codel.c343
1 files changed, 343 insertions, 0 deletions
diff --git a/src/network/tc/fq-codel.c b/src/network/tc/fq-codel.c
new file mode 100644
index 0000000..124faf7
--- /dev/null
+++ b/src/network/tc/fq-codel.c
@@ -0,0 +1,343 @@
+/* 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"
+#include "strv.h"
+
+static int fair_queueing_controlled_delay_init(QDisc *qdisc) {
+ FairQueueingControlledDelay *fqcd;
+
+ assert(qdisc);
+
+ fqcd = FQ_CODEL(qdisc);
+
+ fqcd->memory_limit = UINT32_MAX;
+ fqcd->ce_threshold_usec = USEC_INFINITY;
+ fqcd->ecn = -1;
+
+ return 0;
+}
+
+static int fair_queueing_controlled_delay_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ FairQueueingControlledDelay *fqcd;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ assert_se(fqcd = FQ_CODEL(qdisc));
+
+ r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "fq_codel");
+ if (r < 0)
+ return r;
+
+ if (fqcd->packet_limit > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_LIMIT, fqcd->packet_limit);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->flows > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_FLOWS, fqcd->flows);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->quantum > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_QUANTUM, fqcd->quantum);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->interval_usec > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_INTERVAL, fqcd->interval_usec);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->target_usec > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_TARGET, fqcd->target_usec);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->ecn >= 0) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_ECN, fqcd->ecn);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->ce_threshold_usec != USEC_INFINITY) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_CE_THRESHOLD, fqcd->ce_threshold_usec);
+ if (r < 0)
+ return r;
+ }
+
+ if (fqcd->memory_limit != UINT32_MAX) {
+ r = sd_netlink_message_append_u32(req, TCA_FQ_CODEL_MEMORY_LIMIT, fqcd->memory_limit);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int config_parse_fair_queueing_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;
+ FairQueueingControlledDelay *fqcd;
+ Network *network = ASSERT_PTR(data);
+ uint32_t *p;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_FQ_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;
+ }
+
+ fqcd = FQ_CODEL(qdisc);
+
+ if (streq(lvalue, "PacketLimit"))
+ p = &fqcd->packet_limit;
+ else if (streq(lvalue, "Flows"))
+ p = &fqcd->flows;
+ else
+ assert_not_reached();
+
+ if (isempty(rvalue)) {
+ *p = 0;
+
+ TAKE_PTR(qdisc);
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, p);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+
+int config_parse_fair_queueing_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;
+ FairQueueingControlledDelay *fqcd;
+ Network *network = ASSERT_PTR(data);
+ usec_t *p;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_FQ_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;
+ }
+
+ fqcd = FQ_CODEL(qdisc);
+
+ if (streq(lvalue, "TargetSec"))
+ p = &fqcd->target_usec;
+ else if (streq(lvalue, "IntervalSec"))
+ p = &fqcd->interval_usec;
+ else if (streq(lvalue, "CEThresholdSec"))
+ p = &fqcd->ce_threshold_usec;
+ else
+ assert_not_reached();
+
+ if (isempty(rvalue)) {
+ if (streq(lvalue, "CEThresholdSec"))
+ *p = USEC_INFINITY;
+ else
+ *p = 0;
+
+ TAKE_PTR(qdisc);
+ 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;
+ }
+
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+
+int config_parse_fair_queueing_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;
+ FairQueueingControlledDelay *fqcd;
+ Network *network = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_FQ_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;
+ }
+
+ fqcd = FQ_CODEL(qdisc);
+
+ r = parse_tristate(rvalue, &fqcd->ecn);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+
+int config_parse_fair_queueing_controlled_delay_size(
+ 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;
+ FairQueueingControlledDelay *fqcd;
+ Network *network = ASSERT_PTR(data);
+ uint64_t sz;
+ uint32_t *p;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ r = qdisc_new_static(QDISC_KIND_FQ_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;
+ }
+
+ fqcd = FQ_CODEL(qdisc);
+
+ if (STR_IN_SET(lvalue, "MemoryLimitBytes", "MemoryLimit"))
+ p = &fqcd->memory_limit;
+ else if (STR_IN_SET(lvalue, "QuantumBytes", "Quantum"))
+ p = &fqcd->quantum;
+ else
+ assert_not_reached();
+
+ if (isempty(rvalue)) {
+ if (STR_IN_SET(lvalue, "MemoryLimitBytes", "MemoryLimit"))
+ *p = UINT32_MAX;
+ else
+ *p = 0;
+
+ TAKE_PTR(qdisc);
+ return 0;
+ }
+
+ r = parse_size(rvalue, 1024, &sz);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+ if (sz >= UINT32_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Specified '%s=' is too large, ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ *p = sz;
+ TAKE_PTR(qdisc);
+
+ return 0;
+}
+
+const QDiscVTable fq_codel_vtable = {
+ .object_size = sizeof(FairQueueingControlledDelay),
+ .tca_kind = "fq_codel",
+ .init = fair_queueing_controlled_delay_init,
+ .fill_message = fair_queueing_controlled_delay_fill_message,
+};
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