T5071: QoS add class match DSCP value

[sever-sever]

QoS DSCP match is skipped
Add it

Change Summary

QoS DSCP match is skipped
Add it

set qos policy shaper test class 23 match 10 ip dscp 'network'

tc filter replace dev eth0 parent 1: protocol all u32 match ip dsfield 224 0xff flowid 1:17

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T5071

Component(s) name

qos

Proposed changes

How to test

set qos interface eth0 egress 'test'
set qos policy shaper test bandwidth '300mbit'
set qos policy shaper test class 23 bandwidth '150mbit'
set qos policy shaper test class 23 match 10 ip dscp 'network'
set qos policy shaper test default bandwidth '20mbit'
set qos policy shaper test default queue-type 'fair-queue'

Debug (expect match ip dsfield 224):

vyos@r14# commit
[ qos ]
{'bandwidth': '300mbit',
 'class': {'23': {'bandwidth': '150mbit',
                  'burst': '15k',
                  'codel_quantum': '1514',
                  'flows': '1024',
                  'interval': '100',
                  'match': {'10': {'ip': {'dscp': 'network'}}},
                  'queue_type': 'fq-codel',
                  'target': '5'}},
 'default': {'bandwidth': '20mbit',
             'burst': '15k',
             'codel_quantum': '1514',
             'flows': '1024',
             'interval': '100',
             'priority': '20',
             'queue_type': 'fair-queue',
             'target': '5'}}

DEBUG/QoS: tc qdisc replace dev eth0 root handle 1: htb r2q 187 default 18
DEBUG/QoS: tc class replace dev eth0 parent 1: classid 1:1 htb rate 300000000
DEBUG/QoS: tc class replace dev eth0 parent 1:1 classid 1:17 htb rate 150000000 burst 15k quantum 1514
DEBUG/QoS: tc qdisc replace dev eth0 parent 1:17 sfq
DEBUG/QoS: tc class replace dev eth0 parent 1:1 classid 1:18 htb rate 20000000 burst 15k quantum 1514 prio 20
DEBUG/QoS: tc qdisc replace dev eth0 parent 1:18 sfq
DEBUG/QoS: tc qdisc replace dev eth0 parent 1:17 fq_codel quantum 1514 flows 1024 interval 100 interval 100 target 5 noecn
DEBUG/QoS: tc filter replace dev eth0 parent 1: protocol all u32 match ip dsfield 224 0xff flowid 1:17

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly