netfilter: nf_tables: add number generator expression

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This patch adds the numgen expression that allows us to generated
incremental and random numbers, this generator is bound to a upper limit
that is specified by userspace.

This expression is useful to distribute packets in a round-robin fashion
as well as randomly.

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Laura Garcia Liebana 2016-08-18 12:13:13 +02:00 • committed by Pablo Neira Ayuso

parent 3d2f30a1df

commit 91dbc6be0a

4 changed files with 223 additions and 0 deletions

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24

include/uapi/linux/netfilter/nf_tables.h

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6

net/netfilter/Kconfig

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1

net/netfilter/Makefile

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192

net/netfilter/nft_numgen.c

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