tree 0bca8b68c30175a1f650f0230811d7edcd2ceed3
parent 1cd7884dfd78df6284d27b008823b0b4a808f196
author Willem de Bruijn <willemb@google.com> 1524764536 -0400
committer David S. Miller <davem@davemloft.net> 1524769662 -0400

udp: add udp gso

Implement generic segmentation offload support for udp datagrams. A
follow-up patch adds support to the protocol stack to generate such
packets.

UDP GSO is not UFO. UFO fragments a single large datagram. GSO splits
a large payload into a number of discrete UDP datagrams.

The implementation adds a GSO type SKB_UDP_GSO_L4 to differentiate it
from UFO (SKB_UDP_GSO).

IPPROTO_UDPLITE is excluded, as that protocol has no gso handler
registered.

[ Export __udp_gso_segment for ipv6. -DaveM ]

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>