netdev - Re: [PATCH] vlan: allow TSO setting on vlan interfaces

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 07 Jul 2010 18:25:11 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH] vlan: allow TSO setting on vlan interfaces

On Wed, 2010-07-07 at 19:14 +0200, Eric Dumazet wrote:
> When we need to shape traffic with low speeds, we need to disable tso on
> network interface :
> 
> ethtool -K eth0.2240 tso off
> 
> It seems vlan interfaces miss the set_tso() ethtool method.
> Propagating tso changes from lower device is not always wanted, some
> vlan want TSO on, other want TSO off.

But it should not be possible to enable TSO if the underlying device
doesn't support it.

Ben.

> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> ---
> 
> diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
> index c6456cb..d827c2e 100644
> --- a/net/8021q/vlan_dev.c
> +++ b/net/8021q/vlan_dev.c
> @@ -844,6 +844,7 @@ static const struct ethtool_ops vlan_ethtool_ops = {
>  	.get_link		= ethtool_op_get_link,
>  	.get_rx_csum		= vlan_ethtool_get_rx_csum,
>  	.get_flags		= vlan_ethtool_get_flags,
> +	.set_tso		= ethtool_op_set_tso,
>  };
>  
>  static const struct net_device_ops vlan_netdev_ops = {
> 

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html