Support IP option and so dynamic size of IP header

AirVantage / sbulb

UDP load balancer prototype using bcc (XDP/Bpf)

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Support IP option and so dynamic size of IP header #16

Open sbernard31 opened 5 years ago

sbernard31 commented 5 years ago

The RFC 791 says :

The Options provide for control functions needed or useful in some situations but unnecessary for the most common communications. The options include provisions for timestamps, security, and special routing.

Here is the iana list of IP options.

My guess is that we don't need to support that. Katran does not support that too.

sbernard31 commented 5 years ago

If we decide to support this we probably need #7 before to avoid issue with XDP and dynamic size issue.