netdev - [PATCH net-next v2 0/4] packet: tpacket gso and csum offload

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Date:	Wed,  3 Feb 2016 18:02:13 -0500
From:	Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, daniel@...earbox.net, mst@...hat.com,
	sri@...ibm.com, Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next v2 0/4] packet: tpacket gso and csum offload

From: Willem de Bruijn <willemb@...gle.com>

Extend PACKET_VNET_HDR socket option support to packet sockets with
memory mapped rings.

Patches 2 and 4 add support to tpacket_rcv and tpacket_snd.

Patch 1 prepares for this by moving the relevant virtio_net_hdr
logic out of packet_snd and packet_rcv into helper functions.

GSO transmission requires all headers in the skb linear section.
Patch 3 moves parsing of tx_ring slot headers before skb allocation
to enable allocation with sufficient linear size.

Changes
  v1->v2:
    - fix bounds checks:
      - subtract sizeof(vnet_hdr) before comparing tp_len to size_max
      - compare tp_len to size_max also with GSO, just do not truncate to MTU

Willem de Bruijn (4):
  packet: move vnet_hdr code to helper functions
  packet: vnet_hdr support for tpacket_rcv
  packet: parse tpacket header before skb alloc
  packet: tpacket_snd gso and checksum offload

 net/packet/af_packet.c | 440 +++++++++++++++++++++++++++++--------------------
 1 file changed, 263 insertions(+), 177 deletions(-)

-- 
2.7.0.rc3.207.g0ac5344