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Date:      Wed, 19 Sep 2018 16:00:37 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 231474] "ifconfig igbX txcsum" doesn't include "txcsum6".
Message-ID:  <bug-231474-7501-DfpOB7jnRE@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-231474-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-231474-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231474

--- Comment #1 from Stephen Hurd <shurd@FreeBSD.org> ---
Can you post the output of:

ifconfig -m igb0 | grep capabilities

> man ifconfig says that "rxcsum" and "txcsum" includes both IPv4 and IPv6 =
options.

I don't see that in the man page...

>      rxcsum, txcsum, rxcsum6, txcsum6
>              If the driver supports user-configurable checksum offloading,
>              enable receive (or transmit) checksum offloading on the inte=
r-
>              face.  The feature can be turned on selectively per protocol=
 fam-
>              ily.  Use rxcsum6, txcsum6 for ip6(4) or rxcsum, txcsum othe=
r-
>              wise.  Some drivers may not be able to enable these flags in=
de-
>              pendently of each other, so setting one may also set the oth=
er.
>              The driver will offload as much checksum work as it can reli=
ably
>              support, the exact level of offloading varies between driver=
s.

There's a patch in PR 231151 which fixes the rxcsum behaviour (though for s=
ome
reason, you're not seeing the issue)
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231151

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