netdev - Re: [PATCH v4 0/9] Cleanup and extension of netdev features

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Date:	Tue, 25 Oct 2011 05:44:56 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Michał Mirosław <mirq-linux@...e.qmqm.pl>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Ben Hutchings <bhutchings@...arflare.com>
Subject: Re: [PATCH v4 0/9] Cleanup and extension of netdev features

Le mardi 25 octobre 2011 à 05:35 +0200, Eric Dumazet a écrit :

> 
> $ ip link show dev vlan.103
> 7: vlan.103@...d0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> pfifo_fast state UP qlen 100
>     link/ether 00:1e:0b:ec:d3:d2 brd ff:ff:ff:ff:ff:ff
> 
> 
> But :
> 
> $ ethtool -k vlan.103
> Offload parameters for vlan.103:
> rx-checksumming: off
> tx-checksumming: off
> scatter-gather: off
> tcp-segmentation-offload: off
> udp-fragmentation-offload: off
> generic-segmentation-offload: off
> generic-receive-offload: on
> large-receive-offload: off
> rx-vlan-offload: off
> tx-vlan-offload: off
> ntuple-filters: off
> receive-hashing: off
> 
> So basically all features but GRO are off.
> 
> 

By the way If I use vlan on top of nic, it seems OK, so bonding is the
suspect ?

$ ip link add link eth3 eth3.103 type vlan id 103
$ ifconfig eth3.103 up
$ ethtool -k eth3.103
Offload parameters for eth3.103:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: off



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