[PATCH] net/pcap: support MTU set

[Ido Goshen]

> -----Original Message-----
> From: Stephen Hemminger <stephen at networkplumber.org>
> Sent: Wednesday, 27 April 2022 22:15
> To: Ido Goshen <Ido at cgstowernetworks.com>
> Cc: Ferruh Yigit <ferruh.yigit at xilinx.com>; dev at dpdk.org; Danny Raveh
> <Danny at cgstowernetworks.com>
> Subject: Re: [PATCH] net/pcap: support MTU set
> 
> >
> > [idog]
> > The main use case is for testing, which is probably the main reason for
> pcap pmd.
> > We support jumbo and mtu in our products but our pcap based CI tests
> cannot cover it.
> > We also have a SW pcap based simulator which we’d like to behave the
> > same as possible as our HW products.
> > Is there a good reason that pcap pmd will behave different then other
> pmds?
> 
> Why not use existing tools to filter the pcap file before you feed it to CI tests?
> 

[idog] how can we test if the mtu feature in our app works if the pcap is filtered externally?  :-D

> Other drivers may (or may not) receive packets greater than MTU. It is really
> driver and hardware dependent.