diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2020-06-16 10:14:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-16 23:46:27 +0300 |
| commit | 60833d54d56c21e7538296eb2e00e104768fd047 (patch) | |
| tree | acc6224de302b76f12869bc7244388ec15824820 /drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | |
| parent | b15bb8817f991497d97ae55d8c0e349a9d1e1478 (diff) | |
| download | linux-60833d54d56c21e7538296eb2e00e104768fd047.tar.xz | |
mlxsw: spectrum: Adjust headroom buffers for 8x ports
The port's headroom buffers are used to store packets while they
traverse the device's pipeline and also to store packets that are egress
mirrored.
On Spectrum-3, ports with eight lanes use two headroom buffers between
which the configured headroom size is split.
In order to prevent packet loss, multiply the calculated headroom size
by two for 8x ports.
Fixes: da382875c616 ("mlxsw: spectrum: Extend to support Spectrum-3 ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 21bfb2f6a6f0..f25a8b084b4b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -312,6 +312,7 @@ static int mlxsw_sp_port_pb_init(struct mlxsw_sp_port *mlxsw_sp_port) if (i == MLXSW_SP_PB_UNUSED) continue; + mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, &size); mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, i, size); } mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, |