iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: dpaa2: add support for manual setup of IRQ coalesing

Browse Source 
Use the newly exported dpio driver API to manually configure the IRQ
coalescing parameters requested by the user.
The .get_coalesce() and .set_coalesce() net_device callbacks are
implemented and directly export or setup the rx-usecs on all the
channels configured.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciornei 2021-10-15 12:01:25 +03:00 committed by David S. Miller
parent ed1d2143fe
commit a64b442137
1 changed files with 51 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
View File

@ -820,7 +820,56 @@ static int dpaa2_eth_set_tunable(struct net_device *net_dev,
return err;
}
static int dpaa2_eth_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *ic,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct dpaa2_eth_priv *priv = netdev_priv(dev);
struct dpaa2_io *dpio = priv->channel[0]->dpio;
dpaa2_io_get_irq_coalescing(dpio, &ic->rx_coalesce_usecs);
return 0;
}
static int dpaa2_eth_set_coalesce(struct net_device *dev,
struct ethtool_coalesce *ic,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
struct dpaa2_eth_priv *priv = netdev_priv(dev);
struct dpaa2_io *dpio;
u32 prev_rx_usecs;
int i, j, err;
/* Keep track of the previous value, just in case we fail */
dpio = priv->channel[0]->dpio;
dpaa2_io_get_irq_coalescing(dpio, &prev_rx_usecs);
/* Setup new value for rx coalescing */
for (i = 0; i < priv->num_channels; i++) {
dpio = priv->channel[i]->dpio;
err = dpaa2_io_set_irq_coalescing(dpio, ic->rx_coalesce_usecs);
if (err)
goto restore_rx_usecs;
}
return 0;
restore_rx_usecs:
for (j = 0; j < i; j++) {
dpio = priv->channel[j]->dpio;
dpaa2_io_set_irq_coalescing(dpio, prev_rx_usecs);
}
return err;
}
const struct ethtool_ops dpaa2_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
.get_drvinfo = dpaa2_eth_get_drvinfo,
.nway_reset = dpaa2_eth_nway_reset,
.get_link = ethtool_op_get_link,
@ -836,4 +885,6 @@ const struct ethtool_ops dpaa2_ethtool_ops = {
.get_ts_info = dpaa2_eth_get_ts_info,
.get_tunable = dpaa2_eth_get_tunable,
.set_tunable = dpaa2_eth_set_tunable,
.get_coalesce = dpaa2_eth_get_coalesce,
.set_coalesce = dpaa2_eth_set_coalesce,
};