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From: Rajesh Kumar <rajfbsd@gmail.com>
Date: Wed, 25 Nov 2020 18:48:37 +0530
Message-ID: <CAAO+ANP7yErK2utYrnkog-YM8fQ_KuAtrwSRRb=UzJNfLkLMvg@mail.gmail.com>
Subject: Re: Netmap bridge not working with 10G Ethernet ports
To: Vincenzo Maffione <vmaffione@freebsd.org>
Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
 FreeBSD Hackers <freebsd-hackers@freebsd.org>, stephan.dewt@yahoo.co.uk
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Hi Vincenzo,


On Tue, Nov 24, 2020 at 8:54 PM Vincenzo Maffione <vmaffione@freebsd.org>
wrote:

>
> Yeah, it's weird because axgbe also uses iflib(4). If the driver exposes
> NIC head/tail pointers (sysctl) it may be useful to check what happens
> there.
> It may be that the NIC is dropping these packets for some reason.
>

Looks like, "ifdi_promisc_set" routine of the driver is not getting
triggered properly.  Forcibly setting the promisc mode from driver is
solving the packet drop issue. Now I see the ARP reply packet.

axgbe has split header support, which causes trouble starting from ping
packets due to incompatibility with Iflib/Netmap and associated utilities.
I made some changes to the driver, Iflib and Netmap utilities and having
the netmap bridge working with axgbe now.

I am working on a clean fix for promisc mode setting and incompatibility
issue. Will submit the changes for review once done.

Thanks for your inputs and support.

Done in r367920.
>

Thank you.

Thanks,
Rajesh.