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enic: add ethtool get_channel support

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Add .get_channel to enic_ethtool_ops to enable basic ethtool -l
support to get the current channel configuration.

Note that the driver does not support dynamically changing queue
configuration, so .set_channel is intentionally unused. Instead, users
should use Cisco's hardware management tools (UCSM/IMC) to modify
virtual interface card configuration out of band.

Signed-off-by: Jon Kohler <jon@nutanix.com>
Link: https://patch.msgid.link/20240627202013.2398217-1-jon@nutanix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jon Kohler 2024-06-27 13:20:13 -07:00 committed by Jakub Kicinski
parent db2dede28d
commit bf7bb7b430
1 changed files with 23 additions and 0 deletions
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23
drivers/net/ethernet/cisco/enic/enic_ethtool.c
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@ -608,6 +608,28 @@ static int enic_get_ts_info(struct net_device *netdev,
return 0;
}
static void enic_get_channels(struct net_device *netdev,
struct ethtool_channels *channels)
{
struct enic *enic = netdev_priv(netdev);
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_MSIX:
channels->max_rx = ENIC_RQ_MAX;
channels->max_tx = ENIC_WQ_MAX;
channels->rx_count = enic->rq_count;
channels->tx_count = enic->wq_count;
break;
case VNIC_DEV_INTR_MODE_MSI:
case VNIC_DEV_INTR_MODE_INTX:
channels->max_combined = 1;
channels->combined_count = 1;
break;
default:
break;
}
}
static const struct ethtool_ops enic_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
@ -632,6 +654,7 @@ static const struct ethtool_ops enic_ethtool_ops = {
.set_rxfh = enic_set_rxfh,
.get_link_ksettings = enic_get_ksettings,
.get_ts_info = enic_get_ts_info,
.get_channels = enic_get_channels,
};
void enic_set_ethtool_ops(struct net_device *netdev)