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SubjectRE: [EXT] Re: [PATCH RFC net-next 14/19] net: mvpp2: add ethtool flow control configuration support
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> > @@ -5373,6 +5402,30 @@ static int
> mvpp2_ethtool_set_pause_param(struct net_device *dev,
> > struct ethtool_pauseparam *pause) {
> > struct mvpp2_port *port = netdev_priv(dev);
> > + int i;
> > +
> > + if (pause->tx_pause && port->priv->global_tx_fc) {
> > + port->tx_fc = true;
> > + mvpp2_rxq_enable_fc(port);
> > + if (port->priv->percpu_pools) {
> > + for (i = 0; i < port->nrxqs; i++)
> > + mvpp2_bm_pool_update_fc(port, &port-
> >priv->bm_pools[i], true);
> > + } else {
> > + mvpp2_bm_pool_update_fc(port, port->pool_long,
> true);
> > + mvpp2_bm_pool_update_fc(port, port->pool_short,
> true);
> > + }
> > +
> > + } else if (port->priv->global_tx_fc) {
> > + port->tx_fc = false;
> > + mvpp2_rxq_disable_fc(port);
> > + if (port->priv->percpu_pools) {
> > + for (i = 0; i < port->nrxqs; i++)
> > + mvpp2_bm_pool_update_fc(port, &port-
> >priv->bm_pools[i], false);
> > + } else {
> > + mvpp2_bm_pool_update_fc(port, port->pool_long,
> false);
> > + mvpp2_bm_pool_update_fc(port, port->pool_short,
> false);
> > + }
> > + }
>
>
> This looks wrong. Flow control is normally the result of auto negotiation. Both
> ends need to agree to it. Which is why
> mvpp2_ethtool_set_pause_param() passes the users request onto phylink.
> phylink will handle the autoneg and then ask the MAC to setup flow control
> depending on the result in mvpp2_mac_link_up().
>
> Andrew

Ok, I would move it to mvpp2_mac_link_up.

Stefan,
Thanks.

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