From 7dcc18adad31d15d528414bdff12bf98d33d9a20 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 18 Jul 2017 10:10:30 +0200 Subject: [PATCH] mlxsw: spectrum_router: Update prefix count for IPv6 The number of possible prefix lengths for IPv6 is 129 and not 128. Fixes following warning from UBSAN when /128 routes are offloaded: UBSAN: Undefined behaviour in drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:2510:27 index 128 is out of range for type 'long unsigned int [128]' Fixes: 5e9c16cc83a7 ("mlxsw: spectrum_router: Implement private fib") Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 32ed2b65b395..e6d629f40f93 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -307,7 +307,7 @@ static struct mlxsw_sp_rif * mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, const struct net_device *dev); -#define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE) +#define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE + 1) struct mlxsw_sp_prefix_usage { DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); -- 2.20.1