linux-kernel - [PATCH net-next 0/3] XDP support for tap

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Message-Id: <1501147533-12368-1-git-send-email-jasowang@redhat.com>
Date:   Thu, 27 Jul 2017 17:25:30 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     davem@...emloft.net, mst@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Jason Wang <jasowang@...hat.com>
Subject: [PATCH net-next 0/3] XDP support for tap

Hi all:

This series tries to implement XDP support for tap. Two path were
implemented:

- fast path: small & non-gso packet, For performance reason we do it
  at page level and use build_skb() to create skb if necessary.
- slow path: big or gso packet, we don't want to lose the capability
  compared to generic XDP, so we export some generic xdp helpers and
  do it after skb was created.

xdp1 shows about 47% improvement.

Please review.

Jason Wang (3):
  tap: use build_skb() for small packet
  net: export some generic xdp helpers
  tap: XDP support

 drivers/net/tun.c         | 247 ++++++++++++++++++++++++++++++++++++++++++----
 include/linux/netdevice.h |   2 +
 net/core/dev.c            |  14 +--
 3 files changed, 236 insertions(+), 27 deletions(-)

-- 
2.7.4