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docs: segmentation-offloads.txt: update for UFO depreciation 

UFO is deprecated except for tuntap and packet per 0c19f846d5,
("net: accept UFO datagrams from tuntap and packet"). Update UFO
docs to reflect this.

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Axtens 2018-02-14 18:05:31 +11:00 committed by David S. Miller
parent 080fe7aa18
commit a65820e695
1 changed files with 4 additions and 0 deletions
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Documentation/networking/segmentation-offloads.txt
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@ -49,6 +49,10 @@ datagram into multiple IPv4 fragments. Many of the requirements for UDP
fragmentation offload are the same as TSO. However the IPv4 ID for fragmentation offload are the same as TSO. However the IPv4 ID for
fragments should not increment as a single IPv4 datagram is fragmented. fragments should not increment as a single IPv4 datagram is fragmented.
UFO is deprecated: modern kernels will no longer generate UFO skbs, but can
still receive them from tuntap and similar devices. Offload of UDP-based
tunnel protocols is still supported.
IPIP, SIT, GRE, UDP Tunnel, and Remote Checksum Offloads IPIP, SIT, GRE, UDP Tunnel, and Remote Checksum Offloads
======================================================== ========================================================