xtables: add and use nft_build_cache

Will be used with the "generation id" infrastructure.
When we're told that the commit failed because someone else made
changes, we can use this to re-initialize the cache and then
revalidate the transaction list (e.g. to detect that we now have
to flush the user-defined chain 'foo' that we wanted to create, but
was added just now by someone else).

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

0 files changed, 0 insertions, 0 deletions