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Date:      Wed, 05 May 2021 15:19:51 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 255571] vmx mtu 9000 no transmission
Message-ID:  <bug-255571-27103-7oBYED5Shd@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-255571-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-255571-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255571

jcaplan@blackberry.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|vmx mtu 9000 performance    |vmx mtu 9000 no
                   |issues                      |transmission

--- Comment #1 from jcaplan@blackberry.com ---
After a bit more investigating, all segments are discarded on the target.

in vmxnet3_isc_rxd_pkt_get(), this condition is reached for all incoming
packets with large MTU:


        if (__predict_false(rxcd->error)) {
                rxc->vxcr_pkt_errors++;
                for (i =3D 0; i < nfrags; i++) {
                        frag =3D &ri->iri_frags[i];
                        frag->irf_len =3D 0;
                }
        }


As far as I can tell I've done everything on the host side with vmware to
configure MTU properly.

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