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author | Susant Sahani <ssahani@vmware.com> | 2020-03-11 11:55:13 +0100 |
---|---|---|
committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2020-03-12 15:39:12 +0900 |
commit | 7f22402007f71819a71f8040631d03fe97c672b9 (patch) | |
tree | f6409524ca41d42fc753eb6b5cb378bf12be8ca3 | |
parent | 7e16f84ea2ce2e22301c15910bf2208811a00729 (diff) | |
download | systemd-7f22402007f71819a71f8040631d03fe97c672b9.tar.gz |
network: TC - introduce HHF
Please see https://lwn.net/Articles/577208/
-rw-r--r-- | man/systemd.network.xml | 31 | ||||
-rw-r--r-- | src/network/meson.build | 2 | ||||
-rw-r--r-- | src/network/networkd-network-gperf.gperf | 3 | ||||
-rw-r--r-- | src/network/networkd-network.c | 1 | ||||
-rw-r--r-- | src/network/tc/hhf.c | 96 | ||||
-rw-r--r-- | src/network/tc/hhf.h | 17 | ||||
-rw-r--r-- | src/network/tc/qdisc.c | 1 | ||||
-rw-r--r-- | src/network/tc/qdisc.h | 2 | ||||
-rw-r--r-- | test/fuzz/fuzz-network-parser/directives.network | 4 |
9 files changed, 157 insertions, 0 deletions
diff --git a/man/systemd.network.xml b/man/systemd.network.xml index 5f01c50529..f1625dfde4 100644 --- a/man/systemd.network.xml +++ b/man/systemd.network.xml @@ -3246,7 +3246,38 @@ is used.</para> </listitem> </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>[HeavyHitterFilter] Section Options</title> + <para>The <literal>[HeavyHitterFilter]</literal> section manages the queueing discipline + (qdisc) of Heavy Hitter Filter (hhf).</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>Parent=</varname></term> + <listitem> + <para>Specifies the parent Queueing Discipline (qdisc). Takes one of <literal>root</literal>, + <literal>clsact</literal> or <literal>ingress</literal>. Defaults to <literal>root</literal>.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><varname>Handle=</varname></term> + <listitem> + <para>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.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>PacketLimit=</varname></term> + <listitem> + <para>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 0 to 4294967294. Defaults to unset and kernel's default is used.</para> + </listitem> + </varlistentry> </variablelist> </refsect1> diff --git a/src/network/meson.build b/src/network/meson.build index 8376a087b9..35b35a76a6 100644 --- a/src/network/meson.build +++ b/src/network/meson.build @@ -121,6 +121,8 @@ sources = files(''' tc/fq-codel.h tc/gred.c tc/gred.h + tc/hhf.c + tc/hhf.h tc/htb.c tc/htb.h tc/netem.c diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf index 3b7b9ebd8b..e1b9b5687a 100644 --- a/src/network/networkd-network-gperf.gperf +++ b/src/network/networkd-network-gperf.gperf @@ -311,6 +311,9 @@ GenericRandomEarlyDetection.Handle, config_parse_qdisc_handle, GenericRandomEarlyDetection.VirtualQueues, config_parse_generic_random_early_detection_u32, QDISC_KIND_GRED, 0 GenericRandomEarlyDetection.DefaultVirtualQueue, config_parse_generic_random_early_detection_u32, QDISC_KIND_GRED, 0 GenericRandomEarlyDetection.GenericRIO, config_parse_generic_random_early_detection_bool, QDISC_KIND_GRED, 0 +HeavyHitterFilter.Parent, config_parse_qdisc_parent, QDISC_KIND_HHF, 0 +HeavyHitterFilter.Handle, config_parse_qdisc_handle, QDISC_KIND_HHF, 0 +HeavyHitterFilter.PacketLimit, config_parse_heavy_hitter_filter_packet_limit, QDISC_KIND_HHF, 0 HierarchyTokenBucket.Parent, config_parse_qdisc_parent, QDISC_KIND_HTB, 0 HierarchyTokenBucket.Handle, config_parse_qdisc_handle, QDISC_KIND_HTB, 0 HierarchyTokenBucket.DefaultClass, config_parse_hierarchy_token_bucket_default_class, QDISC_KIND_HTB, 0 diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c index 728191728f..f99886d5f9 100644 --- a/src/network/networkd-network.c +++ b/src/network/networkd-network.c @@ -497,6 +497,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi "FairQueueing\0" "FairQueueingControlledDelay\0" "GenericRandomEarlyDetection\0" + "HeavyHitterFilter\0" "HierarchyTokenBucket\0" "HierarchyTokenBucketClass\0" "NetworkEmulator\0" diff --git a/src/network/tc/hhf.c b/src/network/tc/hhf.c new file mode 100644 index 0000000000..a9d0bdad2f --- /dev/null +++ b/src/network/tc/hhf.c @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: LGPL-2.1+ + * Copyright © 2020 VMware, Inc. */ + +#include <linux/pkt_sched.h> + +#include "alloc-util.h" +#include "conf-parser.h" +#include "hhf.h" +#include "netlink-util.h" +#include "parse-util.h" +#include "string-util.h" +#include "util.h" + +static int heavy_hitter_filter_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) { + HeavyHitterFilter *hhf; + int r; + + assert(link); + assert(qdisc); + assert(req); + + hhf = HHF(qdisc); + + r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "hhf"); + if (r < 0) + return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m"); + + if (hhf->packet_limit > 0) { + r = sd_netlink_message_append_u32(req, TCA_HHF_BACKLOG_LIMIT, hhf->packet_limit); + if (r < 0) + return log_link_error_errno(link, r, "Could not append TCA_HHF_BACKLOG_LIMIT 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_heavy_hitter_filter_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; + HeavyHitterFilter *hhf; + Network *network = data; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = qdisc_new_static(QDISC_KIND_HHF, 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"); + + hhf = HHF(qdisc); + + if (isempty(rvalue)) { + hhf->packet_limit = 0; + + qdisc = NULL; + return 0; + } + + r = safe_atou32(rvalue, &hhf->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 hhf_vtable = { + .object_size = sizeof(HeavyHitterFilter), + .tca_kind = "hhf", + .fill_message = heavy_hitter_filter_fill_message, +}; diff --git a/src/network/tc/hhf.h b/src/network/tc/hhf.h new file mode 100644 index 0000000000..a555998eee --- /dev/null +++ b/src/network/tc/hhf.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 HeavyHitterFilter { + QDisc meta; + + uint32_t packet_limit; +} HeavyHitterFilter; + +DEFINE_QDISC_CAST(HHF, HeavyHitterFilter); +extern const QDiscVTable hhf_vtable; + +CONFIG_PARSER_PROTOTYPE(config_parse_heavy_hitter_filter_packet_limit); diff --git a/src/network/tc/qdisc.c b/src/network/tc/qdisc.c index 57f0890099..543f71330f 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_FQ] = &fq_vtable, [QDISC_KIND_FQ_CODEL] = &fq_codel_vtable, [QDISC_KIND_GRED] = &gred_vtable, + [QDISC_KIND_HHF] = &hhf_vtable, [QDISC_KIND_HTB] = &htb_vtable, [QDISC_KIND_NETEM] = &netem_vtable, [QDISC_KIND_PIE] = &pie_vtable, diff --git a/src/network/tc/qdisc.h b/src/network/tc/qdisc.h index 0d606bf824..5c43d7a838 100644 --- a/src/network/tc/qdisc.h +++ b/src/network/tc/qdisc.h @@ -16,6 +16,7 @@ typedef enum QDiscKind { QDISC_KIND_FQ, QDISC_KIND_FQ_CODEL, QDISC_KIND_GRED, + QDISC_KIND_HHF, QDISC_KIND_HTB, QDISC_KIND_NETEM, QDISC_KIND_PFIFO, @@ -89,6 +90,7 @@ CONFIG_PARSER_PROTOTYPE(config_parse_qdisc_handle); #include "fq-codel.h" #include "fq.h" #include "gred.h" +#include "hhf.h" #include "htb.h" #include "pie.h" #include "netem.h" diff --git a/test/fuzz/fuzz-network-parser/directives.network b/test/fuzz/fuzz-network-parser/directives.network index 5265946dfe..a729adcc86 100644 --- a/test/fuzz/fuzz-network-parser/directives.network +++ b/test/fuzz/fuzz-network-parser/directives.network @@ -392,3 +392,7 @@ Handle= Parent= ClassId= Quantum= +[HeavyHitterFilter] +Parent= +Handle= +PacketLimit= |