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network: TC - introduce pfifo_fast 

pfifo_fast - three-band first in, first out queue

Please see https://linux.die.net/man/8/tc-pfifo_fast
This commit is contained in:
Susant Sahani 2020-03-11 11:02:20 +01:00 committed by Yu Watanabe
parent 73136507ac
commit 1a95964bfa
8 changed files with 36 additions and 0 deletions
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21
man/systemd.network.xml
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@ -2691,6 +2691,27 @@
</variablelist>
</refsect1>
<refsect1>
<title>[PFIFOFast] Section Options</title>
<para>The <literal>[PFIFOFast]</literal> section manages the queueing discipline (qdisc) of
Packet First In First Out Fast (pfifo_fast).</para>
<variablelist class='network-directives'>
<varlistentry>
<term><varname>Parent=</varname></term>
<listitem>
<para>As in <literal>[PFIFO]</literal> section.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>Handle=</varname></term>
<listitem>
<para>As in <literal>[PFIFO]</literal> section..</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>[CAKE] Section Options</title>
<para>The <literal>[CAKE]</literal> section manages the queueing discipline (qdisc) of

2
src/network/networkd-network-gperf.gperf
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@ -280,6 +280,8 @@ DeficitRoundRobinSchedulerClass.Quantum, config_parse_drr_size,
PFIFO.Parent, config_parse_qdisc_parent, QDISC_KIND_PFIFO, 0
PFIFO.Handle, config_parse_qdisc_handle, QDISC_KIND_PFIFO, 0
PFIFO.PacketLimit, config_parse_pfifo_size, QDISC_KIND_PFIFO, 0
PFIFOFast.Parent, config_parse_qdisc_parent, QDISC_KIND_PFIFO_FAST, 0
PFIFOFast.Handle, config_parse_qdisc_handle, QDISC_KIND_PFIFO_FAST, 0
PFIFOHeadDrop.Parent, config_parse_qdisc_parent, QDISC_KIND_PFIFO_HEAD_DROP, 0
PFIFOHeadDrop.Handle, config_parse_qdisc_handle, QDISC_KIND_PFIFO_HEAD_DROP, 0
PFIFOHeadDrop.PacketLimit, config_parse_pfifo_size, QDISC_KIND_PFIFO_HEAD_DROP, 0

1
src/network/networkd-network.c
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@ -492,6 +492,7 @@ int network_load_one(Manager *manager, OrderedHashmap **networks, const char *fi
"DeficitRoundRobinScheduler\0"
"DeficitRoundRobinSchedulerClass\0"
"PFIFO\0"
"PFIFOFast\0"
"PFIFOHeadDrop\0"
"FairQueueing\0"
"FairQueueingControlledDelay\0"

5
src/network/tc/fifo.c
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@ -176,3 +176,8 @@ const QDiscVTable pfifo_head_drop_vtable = {
.tca_kind = "pfifo_head_drop",
.fill_message = fifo_fill_message,
};
const QDiscVTable pfifo_fast_vtable = {
.object_size = sizeof(FirstInFirstOut),
.tca_kind = "pfifo_fast",
};

2
src/network/tc/fifo.h
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@ -14,10 +14,12 @@ typedef struct FirstInFirstOut {
DEFINE_QDISC_CAST(PFIFO, FirstInFirstOut);
DEFINE_QDISC_CAST(BFIFO, FirstInFirstOut);
DEFINE_QDISC_CAST(PFIFO_HEAD_DROP, FirstInFirstOut);
DEFINE_QDISC_CAST(PFIFO_FAST, FirstInFirstOut);
extern const QDiscVTable pfifo_vtable;
extern const QDiscVTable bfifo_vtable;
extern const QDiscVTable pfifo_head_drop_vtable;
extern const QDiscVTable pfifo_fast_vtable;
CONFIG_PARSER_PROTOTYPE(config_parse_pfifo_size);
CONFIG_PARSER_PROTOTYPE(config_parse_bfifo_size);

1
src/network/tc/qdisc.c
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@ -27,6 +27,7 @@ const QDiscVTable * const qdisc_vtable[_QDISC_KIND_MAX] = {
[QDISC_KIND_NETEM] = &netem_vtable,
[QDISC_KIND_PIE] = &pie_vtable,
[QDISC_KIND_PFIFO] = &pfifo_vtable,
[QDISC_KIND_PFIFO_FAST] = &pfifo_fast_vtable,
[QDISC_KIND_PFIFO_HEAD_DROP] = &pfifo_head_drop_vtable,
[QDISC_KIND_SFB] = &sfb_vtable,
[QDISC_KIND_SFQ] = &sfq_vtable,

1
src/network/tc/qdisc.h
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@ -19,6 +19,7 @@ typedef enum QDiscKind {
QDISC_KIND_HTB,
QDISC_KIND_NETEM,
QDISC_KIND_PFIFO,
QDISC_KIND_PFIFO_FAST,
QDISC_KIND_PFIFO_HEAD_DROP,
QDISC_KIND_PIE,
QDISC_KIND_SFB,

3
test/fuzz/fuzz-network-parser/directives.network
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@ -368,6 +368,9 @@ PacketLimit=
Parent=
Handle=
PacketLimit=
[PFIFOFast]
Parent=
Handle=
[GenericRandomEarlyDetection]
Parent=
Handle=