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net: switchdev: Simplify 'mlxsw_sp_mc_write_mdb_entry()'

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Use 'bitmap_alloc()/bitmap_free()' instead of hand-writing it.
This makes the code less verbose.

Also, use 'bitmap_alloc()' instead of 'bitmap_zalloc()' because the bitmap
is fully overridden by a 'bitmap_copy()' call just after its allocation.

While at it, remove an extra and unneeded space.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christophe JAILLET 2021-07-14 10:32:33 +02:00 committed by David S. Miller
parent f79a3bcb1a
commit a99f030b24
1 changed files with 3 additions and 5 deletions
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8
drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
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@ -1569,7 +1569,6 @@ mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp,
{
long *flood_bitmap;
int num_of_ports;
int alloc_size;
u16 mid_idx;
int err;
@ -1579,18 +1578,17 @@ mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp,
return false;
num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core);
alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports);
flood_bitmap = kzalloc(alloc_size, GFP_KERNEL);
flood_bitmap = bitmap_alloc(num_of_ports, GFP_KERNEL);
if (!flood_bitmap)
return false;
bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports);
bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports);
mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp);
mid->mid = mid_idx;
err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap,
bridge_device->mrouter);
kfree(flood_bitmap);
bitmap_free(flood_bitmap);
if (err)
return false;