diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index d8485f736f..6a2dd0d04c 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -2677,6 +2677,31 @@
+
+ [TrivialLinkEqualizer] Section Options
+ The [TrivialLinkEqualizer] section manages the queueing discipline (qdisc) of
+ trivial link equalizer (teql).
+
+
+
+ Parent=
+
+ Specifies the parent Queueing Discipline (qdisc). Takes one of root,
+ clsact or ingress. Defaults to root.
+
+
+
+ Id=
+
+ Specifies the interface ID N of teql. Defaults to 0.
+ Note that when teql is used, currently, the module sch_teql with
+ max_equalizers=N+1 option must be loaded before
+ systemd-networkd is started.
+
+
+
+
+
[BridgeVLAN] Section Options
The [BridgeVLAN] section manages the VLAN ID configuration of a bridge port and accepts
diff --git a/src/network/meson.build b/src/network/meson.build
index 7cb1bb5a38..c1c02cfda1 100644
--- a/src/network/meson.build
+++ b/src/network/meson.build
@@ -123,6 +123,8 @@ sources = files('''
tc/tbf.h
tc/tc-util.c
tc/tc-util.h
+ tc/teql.c
+ tc/teql.h
'''.split())
systemd_networkd_sources = files('networkd.c')
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index 81ce9ee1e4..3e2d8d8ee9 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -293,6 +293,8 @@ TokenBucketFilter.MTUBytes, config_parse_token_bucket_filter_si
TokenBucketFilter.MPUBytes, config_parse_token_bucket_filter_size, QDISC_KIND_TBF, 0
TokenBucketFilter.PeakRate, config_parse_token_bucket_filter_size, QDISC_KIND_TBF, 0
TokenBucketFilter.LatencySec, config_parse_token_bucket_filter_latency, QDISC_KIND_TBF, 0
+TrivialLinkEqualizer.Parent, config_parse_qdisc_parent, QDISC_KIND_TEQL, 0
+TrivialLinkEqualizer.Id, config_parse_trivial_link_equalizer_id, QDISC_KIND_TEQL, 0
/* backwards compatibility: do not add new entries to this section */
Network.IPv4LL, config_parse_ipv4ll, 0, offsetof(Network, link_local)
DHCP.ClientIdentifier, config_parse_dhcp_client_identifier, 0, offsetof(Network, dhcp_client_identifier)
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 96f9c785ba..b06ae75c05 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -488,7 +488,8 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
"FairQueueingControlledDelay\0"
"NetworkEmulator\0"
"StochasticFairnessQueueing\0"
- "TokenBucketFilter\0",
+ "TokenBucketFilter\0"
+ "TrivialLinkEqualizer\0",
config_item_perf_lookup, network_network_gperf_lookup,
CONFIG_PARSE_WARN, network);
if (r < 0)
diff --git a/src/network/tc/qdisc.c b/src/network/tc/qdisc.c
index f1527cc1f5..0d622c8aaf 100644
--- a/src/network/tc/qdisc.c
+++ b/src/network/tc/qdisc.c
@@ -20,6 +20,7 @@ const QDiscVTable * const qdisc_vtable[_QDISC_KIND_MAX] = {
[QDISC_KIND_NETEM] = &netem_vtable,
[QDISC_KIND_SFQ] = &sfq_vtable,
[QDISC_KIND_TBF] = &tbf_vtable,
+ [QDISC_KIND_TEQL] = &teql_vtable,
};
static int qdisc_new(QDiscKind kind, QDisc **ret) {
@@ -176,13 +177,21 @@ int qdisc_configure(Link *link, QDisc *qdisc) {
}
if (QDISC_VTABLE(qdisc)) {
- r = sd_netlink_message_append_string(req, TCA_KIND, QDISC_VTABLE(qdisc)->tca_kind);
- if (r < 0)
- return log_link_error_errno(link, r, "Could not append TCA_KIND attribute: %m");
+ if (QDISC_VTABLE(qdisc)->fill_tca_kind) {
+ r = QDISC_VTABLE(qdisc)->fill_tca_kind(link, qdisc, req);
+ if (r < 0)
+ return r;
+ } else {
+ r = sd_netlink_message_append_string(req, TCA_KIND, QDISC_VTABLE(qdisc)->tca_kind);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append TCA_KIND attribute: %m");
+ }
- r = QDISC_VTABLE(qdisc)->fill_message(link, qdisc, req);
- if (r < 0)
- return r;
+ if (QDISC_VTABLE(qdisc)->fill_message) {
+ r = QDISC_VTABLE(qdisc)->fill_message(link, qdisc, req);
+ if (r < 0)
+ return r;
+ }
} else {
r = sd_netlink_message_append_string(req, TCA_KIND, qdisc->tca_kind);
if (r < 0)
diff --git a/src/network/tc/qdisc.h b/src/network/tc/qdisc.h
index bae4d1ab3f..b1753e4d95 100644
--- a/src/network/tc/qdisc.h
+++ b/src/network/tc/qdisc.h
@@ -14,6 +14,7 @@ typedef enum QDiscKind {
QDISC_KIND_NETEM,
QDISC_KIND_SFQ,
QDISC_KIND_TBF,
+ QDISC_KIND_TEQL,
_QDISC_KIND_MAX,
_QDISC_KIND_INVALID = -1,
} QDiscKind;
@@ -35,6 +36,7 @@ typedef struct QDiscVTable {
const char *tca_kind;
/* called in qdisc_new() */
int (*init)(QDisc *qdisc);
+ int (*fill_tca_kind)(Link *link, QDisc *qdisc, sd_netlink_message *m);
int (*fill_message)(Link *link, QDisc *qdisc, sd_netlink_message *m);
int (*verify)(QDisc *qdisc);
} QDiscVTable;
@@ -71,3 +73,4 @@ CONFIG_PARSER_PROTOTYPE(config_parse_qdisc_parent);
#include "netem.h"
#include "sfq.h"
#include "tbf.h"
+#include "teql.h"
diff --git a/src/network/tc/teql.c b/src/network/tc/teql.c
new file mode 100644
index 0000000000..aac9499616
--- /dev/null
+++ b/src/network/tc/teql.c
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include "macro.h"
+#include "netlink-util.h"
+#include "parse-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "teql.h"
+
+static int trivial_link_equalizer_fill_tca_kind(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ char kind[STRLEN("teql") + DECIMAL_STR_MAX(unsigned)];
+ TrivialLinkEqualizer *teql;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ teql = TEQL(qdisc);
+
+ xsprintf(kind, "teql%u", teql->id);
+ r = sd_netlink_message_append_string(req, TCA_KIND, kind);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append TCA_KIND attribute: %m");
+
+ return 0;
+}
+
+const QDiscVTable teql_vtable = {
+ .object_size = sizeof(TrivialLinkEqualizer),
+ .fill_tca_kind = trivial_link_equalizer_fill_tca_kind,
+};
+
+int config_parse_trivial_link_equalizer_id(
+ 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;
+ TrivialLinkEqualizer *teql;
+ Network *network = data;
+ unsigned id;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = qdisc_new_static(QDISC_KIND_TEQL, network, filename, section_line, &qdisc);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0)
+ return log_syntax(unit, LOG_ERR, filename, line, r,
+ "More than one kind of queueing discipline, ignoring assignment: %m");
+
+ teql = TEQL(qdisc);
+
+ if (isempty(rvalue)) {
+ teql->id = 0;
+
+ qdisc = NULL;
+ return 0;
+ }
+
+ r = safe_atou(rvalue, &id);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+ if (id > INT_MAX) {
+ log_syntax(unit, LOG_ERR, filename, line, 0,
+ "'%s=' is too large, ignoring assignment: %s",
+ lvalue, rvalue);
+ }
+
+ teql->id = id;
+
+ qdisc = NULL;
+ return 0;
+}
diff --git a/src/network/tc/teql.h b/src/network/tc/teql.h
new file mode 100644
index 0000000000..5b091aaf0f
--- /dev/null
+++ b/src/network/tc/teql.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include "conf-parser.h"
+#include "qdisc.h"
+
+typedef struct TrivialLinkEqualizer {
+ QDisc meta;
+
+ unsigned id;
+} TrivialLinkEqualizer;
+
+DEFINE_QDISC_CAST(TEQL, TrivialLinkEqualizer);
+extern const QDiscVTable teql_vtable;
+
+CONFIG_PARSER_PROTOTYPE(config_parse_trivial_link_equalizer_id);
diff --git a/test/fuzz/fuzz-network-parser/directives.network b/test/fuzz/fuzz-network-parser/directives.network
index 5b04fefeb5..cfee5db02f 100644
--- a/test/fuzz/fuzz-network-parser/directives.network
+++ b/test/fuzz/fuzz-network-parser/directives.network
@@ -326,3 +326,6 @@ NetworkEmulatorDelayJitterSec=
NetworkEmulatorLossRate=
NetworkEmulatorDuplicateRate=
NetworkEmulatorPacketLimit=
+[TrivialLinkEqualizer]
+Parent=
+Id=