udp: add udp gso

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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>

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Willem de Bruijn 2018-04-26 13:42:16 -04:00 • committed by David S. Miller

parent 1cd7884dfd

commit ee80d1ebe5

6 changed files with 82 additions and 4 deletions

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2

include/linux/skbuff.h

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4

include/net/udp.h

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