Hi, Currently, I am working on a module that classifies packets based on the L3/L4 headers, like the destination address, port number, etc. However, due to options, we need to deal with IP variable headers: e.g., the options for IPv4, and extension headers for IPv6.
For the ntuple filters, I found that they can direct packets with variable IPv4/IPv6 headers to the corresponding queues as specified by the filters. However, after receiving the IP packets with variable headers from the NIC, we cannot use ACL rules to classify them. This is because only packets with fixed IPv4/ IPv6 header are supported by ACL rules in the current implementation. So, I am wondering does DPDK have some functions to help to deal with such packets? Any suggestions are appreciated! Best, Qiaobin
