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mlxsw: spectrum: Don't emit errors when PFC is disabled

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We can't have PAUSE frames and PFC both enabled on the same port, but
the fact that ieee_setpfc() was called doesn't necessarily mean PFC is
enabled.

Only emit errors when PAUSE frames and PFC are enabled simultaneously.

Fixes: d81a6bdb87 ("mlxsw: spectrum: Add IEEE 802.1Qbb PFC support")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-07-15 11:15:00 +02:00 committed by David S. Miller
parent c3f1576810
commit 7347180dca
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/mellanox/mlxsw/spectrum_dcb.c
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@ -351,7 +351,8 @@ static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
if (mlxsw_sp_port->link.tx_pause || mlxsw_sp_port->link.rx_pause) {
if ((mlxsw_sp_port->link.tx_pause || mlxsw_sp_port->link.rx_pause) &&
pfc->pfc_en) {
netdev_err(dev, "PAUSE frames already enabled on port\n");
return -EINVAL;
}