netdev - [net PATCH 0/5] virtio_net XDP fixes and ajust

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Message-ID: <20170112213919.3039.54165.stgit@john-Precision-Tower-5810>
Date:   Thu, 12 Jan 2017 13:43:26 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     jasowang@...hat.com, mst@...hat.com
Cc:     john.r.fastabend@...el.com, netdev@...r.kernel.org,
        john.fastabend@...il.com, alexei.starovoitov@...il.com,
        daniel@...earbox.net
Subject: [net PATCH 0/5] virtio_net XDP fixes and ajust_header xupport 

This has a fix to handle small buffer free logic correctly and then
also adds adjust head support.

I pushed adjust head at net (even though its rc3) to avoid having
to push another exception case into virtio_net to catch if the
program uses adjust_head and then block it. If there are any strong
objections to this we can push it at net-next and use a patch from
Jakub to add the exception handling but then user space has to deal
with it either via try/fail logic or via kernel version checks. Granted
we already have some cases that need to be configured to enable XDP
but I don't see any reason to have yet another one when we can fix it
now vs delaying a kernel version.

---

John Fastabend (5):
      virtio_net: use dev_kfree_skb for small buffer XDP receive
      net: virtio: wrap rtnl_lock in test for calling with lock already held
      virtio_net: factor out xdp handler for readability
      virtio_net: remove duplicate queue pair binding in XDP
      virtio_net: XDP support for adjust_head

 drivers/net/virtio_net.c |  251 ++++++++++++++++++++++++++++++++--------------
 drivers/virtio/virtio.c  |    9 +-
 include/linux/virtio.h   |    3 +
 3 files changed, 183 insertions(+), 80 deletions(-)

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