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path: root/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
index ba090262e27e..2c0cfa79d138 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -399,11 +399,13 @@ void mlxsw_sp_hdroom_bufs_reset_sizes(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_hdroom *hdroom)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ unsigned int max_mtu = mlxsw_sp_port->dev->max_mtu;
u16 reserve_cells;
int i;
+ max_mtu += MLXSW_PORT_ETH_FRAME_HDR;
/* Internal buffer. */
- reserve_cells = mlxsw_sp_hdroom_int_buf_size_get(mlxsw_sp, mlxsw_sp_port->max_mtu,
+ reserve_cells = mlxsw_sp_hdroom_int_buf_size_get(mlxsw_sp, max_mtu,
mlxsw_sp_port->max_speed);
reserve_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, reserve_cells);
hdroom->int_buf.reserve_cells = reserve_cells;
@@ -613,7 +615,9 @@ static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom);
/* Buffer 9 is used for control traffic. */
- size9 = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, mlxsw_sp_port->max_mtu);
+ size9 = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port,
+ mlxsw_sp_port->dev->max_mtu +
+ MLXSW_PORT_ETH_FRAME_HDR);
hdroom.bufs.buf[9].size_cells = mlxsw_sp_bytes_cells(mlxsw_sp, size9);
return __mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom, true);