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Re: [PATCH net-next 5/6] net: use core MTU range checking in virt drivers

From Jarod Wilson <jarod@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH net-next 5/6] net: use core MTU range checking in virt drivers
Date 2016-10-19 16:20 +0200
Message-ID <stZSP-2nd-93@gated-at.bofh.it> (permalink)
References <stOXn-2Tk-9@gated-at.bofh.it> <stOXn-2Tk-21@gated-at.bofh.it> <stZSP-2nd-95@gated-at.bofh.it> <stZSP-2nd-97@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Oct 19, 2016 at 05:03:43PM +0300, Michael S. Tsirkin wrote:
> On Wed, Oct 19, 2016 at 04:59:46PM +0300, Michael S. Tsirkin wrote:
> > On Tue, Oct 18, 2016 at 10:33:32PM -0400, Jarod Wilson wrote:
> > > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> > > index fad84f3..4885a42 100644
> > > --- a/drivers/net/virtio_net.c
> > > +++ b/drivers/net/virtio_net.c
> > > @@ -1419,17 +1419,6 @@ static const struct ethtool_ops virtnet_ethtool_ops = {
> > >  	.set_settings = virtnet_set_settings,
> > >  };
> > >  
> > > -#define MIN_MTU 68
> > > -#define MAX_MTU 65535
> > > -
> > > -static int virtnet_change_mtu(struct net_device *dev, int new_mtu)
> > > -{
> > > -	if (new_mtu < MIN_MTU || new_mtu > MAX_MTU)
> > > -		return -EINVAL;
> > > -	dev->mtu = new_mtu;
> > > -	return 0;
> > > -}
> > > -
> > >  static const struct net_device_ops virtnet_netdev = {
> > >  	.ndo_open            = virtnet_open,
> > >  	.ndo_stop   	     = virtnet_close,
> > > @@ -1437,7 +1426,6 @@ static const struct net_device_ops virtnet_netdev = {
> > >  	.ndo_validate_addr   = eth_validate_addr,
> > >  	.ndo_set_mac_address = virtnet_set_mac_address,
> > >  	.ndo_set_rx_mode     = virtnet_set_rx_mode,
> > > -	.ndo_change_mtu	     = virtnet_change_mtu,
> > >  	.ndo_get_stats64     = virtnet_stats,
> > >  	.ndo_vlan_rx_add_vid = virtnet_vlan_rx_add_vid,
> > >  	.ndo_vlan_rx_kill_vid = virtnet_vlan_rx_kill_vid,
> > > @@ -1748,6 +1736,9 @@ static bool virtnet_validate_features(struct virtio_device *vdev)
> > >  	return true;
> > >  }
> > >  
> > > +#define MIN_MTU ETH_MIN_MTU
> > > +#define MAX_MTU 65535
> > > +
> > 
> > Do we need a common macro for this?
> 
> I think it's actually IP_MAX_MTU.

Ah, yes, it is. I'm not sure why I didn't use that...

-- 
Jarod Wilson
jarod@redhat.com

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Thread

[PATCH net-next 5/6] net: use core MTU range checking in virt drivers Jarod Wilson <jarod@redhat.com> - 2016-10-19 04:40 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers Jarod Wilson <jarod@redhat.com> - 2016-10-19 16:20 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers Jarod Wilson <jarod@redhat.com> - 2016-10-19 16:20 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers "Michael S. Tsirkin" <mst@redhat.com> - 2016-10-19 16:20 +0200
    Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers "Michael S. Tsirkin" <mst@redhat.com> - 2016-10-19 18:20 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers Jarod Wilson <jarod@redhat.com> - 2016-10-19 16:30 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt drivers Aaron Conole <aconole@bytheb.org> - 2016-10-19 17:10 +0200
  RE: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers Haiyang Zhang <haiyangz@microsoft.com> - 2016-10-19 17:50 +0200
  Re: [PATCH net-next 5/6] net: use core MTU range checking in virt  drivers Shrikrishna Khare <skhare@shri-linux.eng.vmware.com> - 2016-10-20 00:30 +0200

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