[PATCH v2] pcap: support MTU set

[Stephen Hemminger]

On Wed, 5 Jul 2023 12:37:41 +0100
Ferruh Yigit <ferruh.yigit at amd.com> wrote:

> On 7/4/2023 10:02 PM, Stephen Hemminger wrote:
> > Support rte_eth_dev_set_mtu for pcap driver when the
> > pcap device is convigured to point to a network interface.
> > 
> > This is rebased an consolidated from earlier version.
> > Added support for FreeBSD.
> >   
> 
> As far as I understand motivation is to make pcap PMD behave close the
> physical NIC and able to test the application MTU feature.
> If so, Ido's v4 was simpler, which doesn't distinguish if pcap backed by
> physical interface or .pcap file.
> What was wrong with that approach?

I started with Ido's patch, then:
  - combined the two patches into one.
  - fixed the error handling (propogate errno correctly)
  - add missing freebsd support

Normally would just give feedback but patch was so old not sure if it was
stuck and unlikely to get merged.