netinet/tcp.h: add tcp zerocopy related changes from linux v5.11
authorSzabolcs Nagy <nsz@port70.net>
Sun, 7 Mar 2021 21:39:24 +0000 (21:39 +0000)
committerRich Felker <dalias@aerifal.cx>
Tue, 8 Mar 2022 22:19:44 +0000 (17:19 -0500)
see

  linux commit 18fb76ed53865c1b5d5f0157b1b825704590beb5
  net-zerocopy: Copy straggler unaligned data for TCP Rx. zerocopy.

  linux commit 94ab9eb9b234ddf23af04a4bc7e8db68e67b8778
  net-zerocopy: Defer vm zap unless actually needed.


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