netfilter: nft_bitwise: correct uapi header comment.

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The comment documenting how bitwise expressions work includes a table
which summarizes the mask and xor arguments combined to express the
supported boolean operations.  However, the row for OR:

 mask    xor
 0       x

is incorrect.

  dreg = (sreg & 0) ^ x

is not equivalent to:

  dreg = sreg | x

What the code actually does is:

  dreg = (sreg & ~x) ^ x

Update the documentation to match.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

...

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Jeremy Sowden 2020-01-01 13:41:32 +00:00 • committed by Pablo Neira Ayuso

parent 6bc8038035

commit 4a7faaf4ad

1 changed files with 1 additions and 1 deletions

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include/uapi/linux/netfilter/nf_tables.h

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