linux-kernel - Re: [PATCH] bonding: Always enable vlan tx offload

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Date:   Wed, 26 Jun 2019 17:25:05 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     davem@...emloft.net, sdf@...gle.com, jianbol@...lanox.com,
        jiri@...lanox.com, mirq-linux@...e.qmqm.pl, willemb@...gle.com,
        sdf@...ichev.me, j.vosburgh@...il.com, vfalico@...il.com,
        andy@...yhouse.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] bonding: Always enable vlan tx offload

Wed, Jun 26, 2019 at 10:08:44AM CEST, yuehaibing@...wei.com wrote:
>We build vlan on top of bonding interface, which vlan offload
>is off, bond mode is 802.3ad (LACP) and xmit_hash_policy is
>BOND_XMIT_POLICY_ENCAP34.
>
>Because vlan tx offload is off, vlan tci is cleared and skb push
>the vlan header in validate_xmit_vlan() while sending from vlan
>devices. Then in bond_xmit_hash, __skb_flow_dissect() fails to
>get information from protocol headers encapsulated within vlan,
>because 'nhoff' is points to IP header, so bond hashing is based
>on layer 2 info, which fails to distribute packets across slaves.
>
>This patch always enable bonding's vlan tx offload, pass the vlan
>packets to the slave devices with vlan tci, let them to handle
>vlan implementation.
>
>Fixes: 278339a42a1b ("bonding: propogate vlan_features to bonding master")
>Suggested-by: Jiri Pirko <jiri@...nulli.us>
>Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Acked-by: Jiri Pirko <jiri@...lanox.com>

Could you please do the same for team? Thanks!