From a0a7379e16b6e4c229d082f24c7e3ef9e812ed46 Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 10 Jun 2014 10:53:01 +0200
Subject: [PATCH] netfilter: nf_tables: use u32 for chain use counter

Since 4fefee5 ("netfilter: nf_tables: allow to delete several objects
from a batch"), every new rule bumps the chain use counter. However,
this is limited to 16 bits, which means that it will overrun after
2^16 rules.

Use a u32 chain counter and check for overflows (just like we do for
table objects).

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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