Wfq Hw

Contents

The following scenario shows how to pre-classify packets to skip WFQ qdisc matches. Hardware-offload is enabled.

Test WFQ Pre-Classification With Hardware-Offload

Description

In this scenario, a WFQ qdisc is configured in DUT0 (eth1 interface) to achieve linksharing among a hierarchy of classes. Since hardware offload is configured, CEETM is used internally.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth1 address 10.0.0.2/24
set interfaces ethernet eth1 traffic control out QDISC
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set traffic control QDISC type wfq bandwidth 100
set traffic control QDISC type wfq class 1 weight 50
set traffic control QDISC type wfq class 2 weight 30
set traffic control QDISC type wfq class 8 weight 20
set traffic control QDISC type wfq default-class 8
set traffic control QDISC type wfq hardware-offload
set traffic control QDISC type wfq match 1 class 1
set traffic control QDISC type wfq match 1 ip destination port 8080
set traffic control QDISC type wfq match 2 class 2
set traffic control QDISC type wfq match 2 ip protocol tcp

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address 10.0.0.1/24
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Ping the IP address 10.0.0.1 from DUT0:

admin@DUT0$ ping 10.0.0.1 count 1 size 56 timeout 1

Show output

PING 10.0.0.1 (10.0.0.1) 56(84) bytes of data.
64 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.640 ms

--- 10.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.640/0.640/0.640/0.000 ms

Step 4: Initiate a bandwidth test from DUT0 to DUT1

admin@DUT1$ monitor test performance server port 8080
admin@DUT0$ monitor test performance client 10.0.0.1 duration 5 port 8080 parallel 1

Expect the following output on DUT0:

Connecting to host 10.0.0.1, port 8080
[  5] local 10.0.0.2 port 48634 connected to 10.0.0.1 port 8080
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  14.4 MBytes   121 Mbits/sec   45    474 KBytes
[  5]   1.00-2.00   sec  11.8 MBytes  99.0 Mbits/sec    0    481 KBytes
[  5]   2.00-3.00   sec  10.6 MBytes  88.7 Mbits/sec    0    530 KBytes
[  5]   3.00-4.00   sec  11.9 MBytes  99.5 Mbits/sec    0    564 KBytes
[  5]   4.00-5.00   sec  10.6 MBytes  89.1 Mbits/sec   45    430 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-5.00   sec  59.2 MBytes  99.4 Mbits/sec   90             sender
[  5]   0.00-5.04   sec  57.3 MBytes  95.4 Mbits/sec                  receiver

iperf Done.

Step 5: Initiate a bandwidth test from DUT0 to DUT1

admin@DUT1$ monitor test performance server port 1234
admin@DUT0$ monitor test performance client 10.0.0.1 duration 5 port 1234 parallel 1

Expect the following output on DUT0:

Connecting to host 10.0.0.1, port 1234
[  5] local 10.0.0.2 port 55384 connected to 10.0.0.1 port 1234
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  14.2 MBytes   120 Mbits/sec   52    481 KBytes
[  5]   1.00-2.00   sec  11.9 MBytes  99.4 Mbits/sec    0    481 KBytes
[  5]   2.00-3.00   sec  10.6 MBytes  89.1 Mbits/sec   17    127 KBytes
[  5]   3.00-4.00   sec  9.52 MBytes  79.9 Mbits/sec   12   69.3 KBytes
[  5]   4.00-5.00   sec  5.95 MBytes  49.9 Mbits/sec    6   60.8 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-5.00   sec  52.2 MBytes  87.6 Mbits/sec   87             sender
[  5]   0.00-5.01   sec  49.4 MBytes  82.8 Mbits/sec                  receiver

iperf Done.

Step 6: Run the command traffic control show on DUT0 and check whether the output contains the following tokens:

ceetm
class 1
class 2
class 8 (default)

Show output

Traffic control for interface 'eth1' - 'egress' mode

------------------------------------------------------------------------------------
ID   traffic control        type         parent  bytes sent  pkts sent  pkts dropped
------------------------------------------------------------------------------------
3:0  QDISC            ceetm              root     117763343      77822           142
3:1  QDISC            class 1            3:0      633209771      41797             0
3:2  QDISC            class 2            3:0      525339934      35876             0
3:8  QDISC            class 8 (default)  3:0            226          3             0

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