[dpdk-dev] [RFC] function to parse packet headers

[Morten Brørup]

From: Rami Rosen [mailto:roszenrami at gmail.com] 
>Hi Morten,
>A good idea, thanks for volunteering! 
>Several minor comments: 
>I would consider calling it rte_mbuf_hdr_parse(), to make it more related to the rte_mbuf* methods, and also I would consider having it in librte_mbuf and not in librte_net as you suggested.

I considered this, but since it looks inside the packet data, and not just processes metadata, I think it doesn't belong in librte_mbuf.

>
>Also regarding the bulk method. The first option is indeed faster and better in terms of performance, which is important since it is intended probably mostly to the datapath. I would consider having the bulk method iterating over the rte_hdr_parse() method ,( or rte_mbuf_hdr_parse() if you will agree to my suggestion), and adding a boolean parameter (mark_malform or something like that) to this method + removing the const quailifier. The bulk method will set that flag when calling the rte_hdr_parse(). Thus you will avoid duplicity of the parsing code.

Good points...

And regarding avoiding code duplicity, I'm pursuing Olivier about merging packet header validation into rte_net_get_ptype() instead of writing a separate function.

>
>Regards,
>Rami Rosen