netdev - RE: [PATCH v5 2/2] virtio-net: use mtu size as buffer length for big packets

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Message-ID: <PH0PR12MB548190350C757262C4C814FFDC419@PH0PR12MB5481.namprd12.prod.outlook.com>
Date:   Wed, 7 Sep 2022 20:04:14 +0000
From:   Parav Pandit <parav@...dia.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
CC:     Gavin Li <gavinl@...dia.com>,
        "stephen@...workplumber.org" <stephen@...workplumber.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "jesse.brandeburg@...el.com" <jesse.brandeburg@...el.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "sridhar.samudrala@...el.com" <sridhar.samudrala@...el.com>,
        "jasowang@...hat.com" <jasowang@...hat.com>,
        "loseweigh@...il.com" <loseweigh@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "virtio-dev@...ts.oasis-open.org" <virtio-dev@...ts.oasis-open.org>,
        Gavi Teitz <gavi@...dia.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Si-Wei Liu <si-wei.liu@...cle.com>
Subject: RE: [PATCH v5 2/2] virtio-net: use mtu size as buffer length for big
 packets


> From: Michael S. Tsirkin <mst@...hat.com>
> Sent: Wednesday, September 7, 2022 3:36 PM
> 
> (c) replace mtu = 0 with sensibly not calling the function when mtu is
> unknown.
Even when mtu is zero, virtnet_set_big_packets() must be called to act on the gso bits.
Currently handling by virtnet_set_big_packets() seems more simpler taking care of mtu and gso both.