diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index da48dd04f4..350b5172be 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -2500,6 +2500,38 @@
+
+ [PIE] Section Options
+ The [PIE] section manages the queueing discipline
+ (qdisc) of Proportional Integral controller-Enhanced (PIE).
+
+
+
+ Parent=
+
+ Specifies the parent Queueing Discipline (qdisc). Takes one of root,
+ clsact or ingress. Defaults to root.
+
+
+
+
+ Handle=
+
+ Specifies the major number of unique identifier of the qdisc, known as the handle.
+ Takes a number in hexadecimal ranges 1 to ffff. Defaults to unset.
+
+
+
+
+ PacketLimit=
+
+ Specifies the hard limit on the queue size in number of packets. When this limit is reached, incoming packets are
+ dropped. An unsigned integer ranges 1 to 4294967294. Defaults to unset and kernel's default is used.
+
+
+
+
+
[StochasticFairBlue] Section Options
The [StochasticFairBlue] section manages the queueing discipline
diff --git a/src/network/meson.build b/src/network/meson.build
index 57d3772c3e..92ef0c1feb 100644
--- a/src/network/meson.build
+++ b/src/network/meson.build
@@ -123,6 +123,8 @@ sources = files('''
tc/htb.h
tc/netem.c
tc/netem.h
+ tc/pie.c
+ tc/pie.h
tc/qdisc.c
tc/qdisc.h
tc/sfb.c
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index 8bf80afddd..9b58702f10 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -313,6 +313,9 @@ NetworkEmulator.DelayJitterSec, config_parse_network_emulator_delay
NetworkEmulator.LossRate, config_parse_network_emulator_rate, QDISC_KIND_NETEM, 0
NetworkEmulator.DuplicateRate, config_parse_network_emulator_rate, QDISC_KIND_NETEM, 0
NetworkEmulator.PacketLimit, config_parse_network_emulator_packet_limit, QDISC_KIND_NETEM, 0
+PIE.Parent, config_parse_qdisc_parent, QDISC_KIND_PIE, 0
+PIE.Handle, config_parse_qdisc_handle, QDISC_KIND_PIE, 0
+PIE.PacketLimit, config_parse_pie_packet_limit, QDISC_KIND_PIE, 0
StochasticFairBlue.Parent, config_parse_qdisc_parent, QDISC_KIND_SFB, 0
StochasticFairBlue.Handle, config_parse_qdisc_handle, QDISC_KIND_SFB, 0
StochasticFairBlue.PacketLimit, config_parse_stochastic_fair_blue_u32, QDISC_KIND_SFB, 0
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 40e4009bec..62e9a7c5d5 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -495,6 +495,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
"HierarchyTokenBucket\0"
"HierarchyTokenBucketClass\0"
"NetworkEmulator\0"
+ "PIE\0"
"StochasticFairBlue\0"
"StochasticFairnessQueueing\0"
"TokenBucketFilter\0"
diff --git a/src/network/tc/pie.c b/src/network/tc/pie.c
new file mode 100644
index 0000000000..e92ced1343
--- /dev/null
+++ b/src/network/tc/pie.c
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2020 VMware, Inc. */
+
+#include
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "pie.h"
+#include "netlink-util.h"
+#include "parse-util.h"
+#include "string-util.h"
+
+static int pie_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+ proportional_integral_controller_enhanced *pie;
+ int r;
+
+ assert(link);
+ assert(qdisc);
+ assert(req);
+
+ pie = PIE(qdisc);
+
+ r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "pie");
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m");
+
+ if (pie->packet_limit > 0) {
+ r = sd_netlink_message_append_u32(req, TCA_PIE_LIMIT, pie->packet_limit);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append TCA_PIE_PLIMIT attribute: %m");
+ }
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close container TCA_OPTIONS: %m");
+
+ return 0;
+}
+
+int config_parse_pie_packet_limit(
+ 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;
+ proportional_integral_controller_enhanced *pie;
+ Network *network = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = qdisc_new_static(QDISC_KIND_PIE, 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");
+
+ pie = PIE(qdisc);
+
+ if (isempty(rvalue)) {
+ pie->packet_limit = 0;
+
+ qdisc = NULL;
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &pie->packet_limit);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse '%s=', ignoring assignment: %s",
+ lvalue, rvalue);
+ return 0;
+ }
+
+ qdisc = NULL;
+
+ return 0;
+}
+
+const QDiscVTable pie_vtable = {
+ .object_size = sizeof(proportional_integral_controller_enhanced),
+ .tca_kind = "pie",
+ .fill_message = pie_fill_message,
+};
diff --git a/src/network/tc/pie.h b/src/network/tc/pie.h
new file mode 100644
index 0000000000..44214f1ba1
--- /dev/null
+++ b/src/network/tc/pie.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2020 VMware, Inc. */
+#pragma once
+
+#include "conf-parser.h"
+#include "qdisc.h"
+
+typedef struct proportional_integral_controller_enhanced {
+ QDisc meta;
+
+ uint32_t packet_limit;
+} proportional_integral_controller_enhanced;
+
+DEFINE_QDISC_CAST(PIE, proportional_integral_controller_enhanced);
+extern const QDiscVTable pie_vtable;
+
+CONFIG_PARSER_PROTOTYPE(config_parse_pie_packet_limit);
diff --git a/src/network/tc/qdisc.c b/src/network/tc/qdisc.c
index 31b6a716c4..44f296e744 100644
--- a/src/network/tc/qdisc.c
+++ b/src/network/tc/qdisc.c
@@ -23,6 +23,7 @@ const QDiscVTable * const qdisc_vtable[_QDISC_KIND_MAX] = {
[QDISC_KIND_GRED] = &gred_vtable,
[QDISC_KIND_HTB] = &htb_vtable,
[QDISC_KIND_NETEM] = &netem_vtable,
+ [QDISC_KIND_PIE] = &pie_vtable,
[QDISC_KIND_PFIFO] = &pfifo_vtable,
[QDISC_KIND_SFB] = &sfb_vtable,
[QDISC_KIND_SFQ] = &sfq_vtable,
diff --git a/src/network/tc/qdisc.h b/src/network/tc/qdisc.h
index 403d6a5b53..81e740f66d 100644
--- a/src/network/tc/qdisc.h
+++ b/src/network/tc/qdisc.h
@@ -17,6 +17,7 @@ typedef enum QDiscKind {
QDISC_KIND_HTB,
QDISC_KIND_NETEM,
QDISC_KIND_PFIFO,
+ QDISC_KIND_PIE,
QDISC_KIND_SFB,
QDISC_KIND_SFQ,
QDISC_KIND_TBF,
@@ -85,6 +86,7 @@ CONFIG_PARSER_PROTOTYPE(config_parse_qdisc_handle);
#include "fq.h"
#include "gred.h"
#include "htb.h"
+#include "pie.h"
#include "netem.h"
#include "sfb.h"
#include "sfq.h"
diff --git a/test/fuzz/fuzz-network-parser/directives.network b/test/fuzz/fuzz-network-parser/directives.network
index b97daca959..b48e7eb3e4 100644
--- a/test/fuzz/fuzz-network-parser/directives.network
+++ b/test/fuzz/fuzz-network-parser/directives.network
@@ -370,3 +370,7 @@ GenericRIO=
Parent=
Handle=
PacketLimit=
+[PIE]
+Parent=
+Handle=
+PacketLimit=