netdev - Re: [ovs-dev] [PATCH net-next 4/4] openvswitch: make skb->csum consistent with rest of networking stack.

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Message-ID: <CAEP_g=_jp71ijx2=eacPWFhASE2JN++g75V=Y9TYGY40NjLiJQ@mail.gmail.com>
Date:	Wed, 12 Jun 2013 19:52:57 -0700
From:	Jesse Gross <jesse@...ira.com>
To:	Pravin B Shelar <pshelar@...ira.com>
Cc:	netdev <netdev@...r.kernel.org>,
	"dev@...nvswitch.org" <dev@...nvswitch.org>
Subject: Re: [ovs-dev] [PATCH net-next 4/4] openvswitch: make skb->csum
 consistent with rest of networking stack.

On Wed, Jun 12, 2013 at 3:57 PM, Pravin B Shelar <pshelar@...ira.com> wrote:
> diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
> index 39cd821..e6ffb82 100644
> --- a/net/openvswitch/datapath.c
> +++ b/net/openvswitch/datapath.c
> @@ -406,6 +406,7 @@ static int queue_userspace_packet(struct net *net, int dp_ifindex,
>                 nskb = __vlan_put_tag(nskb, nskb->vlan_proto, vlan_tx_tag_get(nskb));
>                 if (!nskb)
>                         return -ENOMEM;
> +               ovs_skb_postpush_rcsum(skb, skb->data + (2 * ETH_ALEN), VLAN_HLEN);

This shouldn't be necessary since the packet is going to userspace,
which won't use the skb->csum value.
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