netdev - Re: [RFC PATCH net-next 0/5] XDP rx handler

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Date:   Mon, 13 Aug 2018 11:17:34 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     ast@...nel.org, daniel@...earbox.net, jbrouer@...hat.com,
        mst@...hat.com
Subject: Re: [RFC PATCH net-next 0/5] XDP rx handler



On 2018年08月13日 11:05, Jason Wang wrote:
> Hi:
>
> This series tries to implement XDP support for rx hanlder. This would
> be useful for doing native XDP on stacked device like macvlan, bridge
> or even bond.
>
> The idea is simple, let stacked device register a XDP rx handler. And
> when driver return XDP_PASS, it will call a new helper xdp_do_pass()
> which will try to pass XDP buff to XDP rx handler directly. XDP rx
> handler may then decide how to proceed, it could consume the buff, ask
> driver to drop the packet or ask the driver to fallback to normal skb
> path.
>
> A sample XDP rx handler was implemented for macvlan. And virtio-net
> (mergeable buffer case) was converted to call xdp_do_pass() as an
> example. For ease comparision, generic XDP support for rx handler was
> also implemented.
>
> Compared to skb mode XDP on macvlan, native XDP on macvlan (XDP_DROP)
> shows about 83% improvement.
>
> Please review.
>
> Thanks
>
> Jason Wang (5):
>    net: core: generic XDP support for stacked device
>    net: core: introduce XDP rx handler
>    macvlan: count the number of vlan in source mode
>    macvlan: basic XDP support
>    virtio-net: support XDP rx handler
>
>   drivers/net/macvlan.c      | 189 +++++++++++++++++++++++++++++++++++++++++++--
>   drivers/net/virtio_net.c   |  11 +++
>   include/linux/filter.h     |   1 +
>   include/linux/if_macvlan.h |   1 +
>   include/linux/netdevice.h  |  12 +++
>   net/core/dev.c             |  34 ++++++++
>   net/core/filter.c          |  28 +++++++
>   7 files changed, 271 insertions(+), 5 deletions(-)
>

Looks like a patch is missed. Let me post V2.

Thanks