Finer matching granularity with async template API

[Asaf Penso]

Hello Tao,

What is the output / error message you get?


Regards,
Asaf Penso
________________________________
From: Tao Li <byteocean at hotmail.com>
Sent: Thursday, March 21, 2024 5:44:00 PM
To: users at dpdk.org <users at dpdk.org>
Subject: Finer matching granularity with async template API


Hi all,



I am using async template API to install flow rules to perform actions on packets to achieve IP(v4)inIP(v6) tunnelling. Currently I am facing an issue where I cannot perform incoming traffic matching with finer granularity. The test-pmd commands in use are as following:



<Not working test-pmd commands>

port stop all



flow configure 0 queues_number 4 queues_size 64 counters_number 0 aging_counters_number 0 meters_number 0 flags 0   # PF0



flow configure 1 queues_number 4 queues_size 64 counters_number 0 aging_counters_number 0 meters_number 0 flags 0



flow configure 2 queues_number 4 queues_size 64 counters_number 0 aging_counters_number 0 meters_number 0 flags 0



flow configure 3 queues_number 4 queues_size 64 counters_number 0 aging_counters_number 0 meters_number 0 flags 0  # PF1V0



port start all

set verbose 1



flow pattern_template 0 create transfer relaxed no pattern_template_id 10  template represented_port ethdev_port_id is 0 / eth  / ipv6 / ipv4 / icmp  / end



set raw_decap 0 eth  / ipv6 / end_set

set raw_encap 0 eth src is 11:22:33:44:55:66 dst is 66:9d:a7:fd:fb:43 type is 0x0800 / end_set



flow actions_template 0 create transfer  actions_template_id 10  template raw_decap index 0 / raw_encap index 0 / represented_port / end mask raw_decap index 0 / raw_encap index 0 /  represented_port  / end



flow template_table 0 create  group 0 priority 0  transfer wire_orig table_id 5 rules_number 8 pattern_template 10 actions_template 10



flow queue 0 create 0 template_table 5 pattern_template 0 actions_template 0 postpone no pattern represented_port ethdev_port_id is 0 / eth  / ipv6  / ipv4 / icmp  / end actions raw_decap index 0 / raw_encap index 0 /  represented_port ethdev_port_id 3 / end



flow push 0 queue 0

</Not working test-pmd commands>



Once I remove matching patterns for the inner packet headers( ipv4 / icmp) as following, I can see the processed packets inside VMs using tcpdump.



<Working test-pmd commands>

…

flow pattern_template 0 create transfer relaxed no pattern_template_id 10  template represented_port ethdev_port_id is 0 / eth  / ipv6 / end

…

flow queue 0 create 0 template_table 5 pattern_template 0 actions_template 0 postpone no pattern represented_port ethdev_port_id is 0 / eth  / ipv6   / end actions raw_decap index 0 / raw_encap index 0 /  represented_port ethdev_port_id 3 / end

…

</Working test-pmd commands>



Similar combination works when using the synchronous rte_flow API. Any comment or suggestion on this issue is much appreciated. Many thanks in advance.



Best regards,

Tao




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