netdev - [patch] net/mlx4: off by one in parse_trans

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Date:	Wed, 11 Jul 2012 09:33:36 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Hadar Hen Zion <hadarh@...lanox.co.il>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Eugenia Emantayev <eugenia@...lanox.co.il>,
	Yevgeny Petrilin <yevgenyp@...lanox.co.il>,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] net/mlx4: off by one in parse_trans_rule()

This should be ">=" here instead of ">".  MLX4_NET_TRANS_RULE_NUM is 6.
We use "spec->id" as an array offset into the __rule_hw_sz[] and
__sw_id_hw[] arrays which have 6 elements.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c
index bc62f53..5bac0df 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mcg.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c
@@ -773,7 +773,7 @@ static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
 		[MLX4_NET_TRANS_RULE_ID_UDP] =
 			sizeof(struct mlx4_net_trans_rule_hw_tcp_udp)
 	};
-	if (spec->id > MLX4_NET_TRANS_RULE_NUM) {
+	if (spec->id >= MLX4_NET_TRANS_RULE_NUM) {
 		mlx4_err(dev, "Invalid network rule id. id = %d\n", spec->id);
 		return -EINVAL;
 	}
--
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