From: Liping Zhang <liping.zhang@spreadtrum.com>
Date: Wed, 19 Oct 2016 15:29:53 +0000 (+0800)
Subject: netfilter: nft_numgen: start round robin from zero
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0ecba4d9d1db51f670af7ba9049461116a3a2bea;p=openwrt%2Fstaging%2Fblogic.git

netfilter: nft_numgen: start round robin from zero

Currently we start round robin from 1, but it's better to start round
robin from 0. This is to keep consistent with xt_statistic in iptables.

Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/nft_numgen.c b/net/netfilter/nft_numgen.c
index 55bc5ab78d4a..a66b36097b8f 100644
--- a/net/netfilter/nft_numgen.c
+++ b/net/netfilter/nft_numgen.c
@@ -65,7 +65,7 @@ static int nft_ng_inc_init(const struct nft_ctx *ctx,
 		return -EOVERFLOW;
 
 	priv->dreg = nft_parse_register(tb[NFTA_NG_DREG]);
-	atomic_set(&priv->counter, 0);
+	atomic_set(&priv->counter, priv->modulus - 1);
 
 	return nft_validate_register_store(ctx, priv->dreg, NULL,
 					   NFT_DATA_VALUE, sizeof(u32));