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net/mlx4: Verify port number in __mlx4_unregister_mac

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Verify port number to avoid crashes if port number is outside the range.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eugenia Emantayev 2014-07-08 11:25:21 +03:00 committed by David S. Miller
parent 4359db1e0d
commit 143b3efb40
1 changed files with 8 additions and 2 deletions
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10
drivers/net/ethernet/mellanox/mlx4/port.c
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@ -244,10 +244,16 @@ EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
{
struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
struct mlx4_mac_table *table = &info->mac_table;
struct mlx4_port_info *info;
struct mlx4_mac_table *table;
int index;
if (port < 1 || port > dev->caps.num_ports) {
mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);
return;
}
info = &mlx4_priv(dev)->port[port];
table = &info->mac_table;
mutex_lock(&table->mutex);
index = find_index(dev, table, mac);