netfilter: nf_tables: add xfrm expression

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supports fetching saddr/daddr of tunnel mode states, request id and spi.
If direction is 'in', use inbound skb secpath, else dst->xfrm.

Joint work with Máté Eckl.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Florian Westphal 2018-09-03 18:09:40 +02:00 • committed by Pablo Neira Ayuso

parent 2953d80ff0

commit 6c47260250

4 changed files with 330 additions and 0 deletions

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29

include/uapi/linux/netfilter/nf_tables.h

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7

net/netfilter/Kconfig

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1

net/netfilter/Makefile

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293

net/netfilter/nft_xfrm.c

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