diff options
| author |   Ido Schimmel <idosch@mellanox.com> | 2016-08-04 17:36:21 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-08-08 12:57:27 -0700 |
| commit | 07d50cae0661e5479d54d6e3e21cad15b1198103 (patch) | |
| tree | cc4ebf5f3c07d203bbbf08ced2a67c241de2c894 | |
| parent | mlxsw: spectrum: Do not assume PAUSE frames are disabled (diff) | |
| download | linux-dev-07d50cae0661e5479d54d6e3e21cad15b1198103.tar.xz linux-dev-07d50cae0661e5479d54d6e3e21cad15b1198103.zip | |
mlxsw: spectrum: Do not override PAUSE settings
The PFCC register is used to configure both PAUSE and PFC frames.
Therefore, when PFC frames are disabled we must make sure we don't
mistakenly also disable PAUSE frames (which might be enabled).
Fix this by packing the PFCC register with the current PAUSE settings.
Note that this register is also accessed via ethtool ops, but there we
are guaranteed to have PFC disabled.
Fixes: d81a6bdb87ce ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c index 3c4a178730ae..b6ed7f7c531e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c @@ -341,6 +341,8 @@ static int mlxsw_sp_port_pfc_set(struct mlxsw_sp_port *mlxsw_sp_port, char pfcc_pl[MLXSW_REG_PFCC_LEN]; mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port); + mlxsw_reg_pfcc_pprx_set(pfcc_pl, mlxsw_sp_port->link.rx_pause); + mlxsw_reg_pfcc_pptx_set(pfcc_pl, mlxsw_sp_port->link.tx_pause); mlxsw_reg_pfcc_prio_pack(pfcc_pl, pfc->pfc_en); return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc), |