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network: tc: support teql

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Closes #14792.
This commit is contained in:
Yu Watanabe 2020-02-06 17:52:24 +09:00
parent ab9dc1db47
commit 9b749c11e2
9 changed files with 158 additions and 7 deletions
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25
man/systemd.network.xml
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@ -2677,6 +2677,31 @@
</variablelist>
</refsect1>
<refsect1>
<title>[TrivialLinkEqualizer] Section Options</title>
<para>The <literal>[TrivialLinkEqualizer]</literal> section manages the queueing discipline (qdisc) of
trivial link equalizer (teql).</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>Id=</varname></term>
<listitem>
<para>Specifies the interface ID <literal>N</literal> of teql. Defaults to <literal>0</literal>.
Note that when teql is used, currently, the module <constant>sch_teql</constant> with
<constant>max_equalizers=N+1</constant> option must be loaded before
<command>systemd-networkd</command> is started.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>[BridgeVLAN] Section Options</title>
<para>The <literal>[BridgeVLAN]</literal> section manages the VLAN ID configuration of a bridge port and accepts

2
src/network/meson.build
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@ -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')

2
src/network/networkd-network-gperf.gperf
View File

@ -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)

3
src/network/networkd-network.c
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@ -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)

21
src/network/tc/qdisc.c
View File

@ -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)

3
src/network/tc/qdisc.h
View File

@ -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"

90
src/network/tc/teql.c Normal file
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@ -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;
}

16
src/network/tc/teql.h Normal file
View File

@ -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);

3
test/fuzz/fuzz-network-parser/directives.network
View File

@ -326,3 +326,6 @@ NetworkEmulatorDelayJitterSec=
NetworkEmulatorLossRate=
NetworkEmulatorDuplicateRate=
NetworkEmulatorPacketLimit=
[TrivialLinkEqualizer]
Parent=
Id=