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Merge branch 'mlxsw-dcb-fixes'

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Ido Schimmel says:

====================
mlxsw: DCB fixes

Patches 1 and 2 fix a problem in which PAUSE frames settings are wrongly
overridden when ieee_setpfc() gets called.

Patch 3 adds a missing rollback in port's creation error path.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-08-08 12:57:28 -07:00
commit 61ec4bcebe
2 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -2220,6 +2220,7 @@ err_port_vlan_init:
err_core_port_init:
unregister_netdev(dev);
err_register_netdev:
mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
err_port_dcb_init:
err_port_ets_init:
err_port_buffers_init:

10
drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
View File

@ -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),
@ -351,17 +353,17 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
struct ieee_pfc *pfc)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
int err;
if ((mlxsw_sp_port->link.tx_pause || mlxsw_sp_port->link.rx_pause) &&
pfc->pfc_en) {
if (pause_en && pfc->pfc_en) {
netdev_err(dev, "PAUSE frames already enabled on port\n");
return -EINVAL;
}
err = __mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu,
mlxsw_sp_port->dcb.ets->prio_tc,
false, pfc);
pause_en, pfc);
if (err) {
netdev_err(dev, "Failed to configure port's headroom for PFC\n");
return err;
@ -380,7 +382,7 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
err_port_pfc_set:
__mlxsw_sp_port_headroom_set(mlxsw_sp_port, dev->mtu,
mlxsw_sp_port->dcb.ets->prio_tc, false,
mlxsw_sp_port->dcb.ets->prio_tc, pause_en,
mlxsw_sp_port->dcb.pfc);
return err;
}