Export coalescing support via ethtool ops.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx>
---
drivers/net/ethernet/ti/cpsw-proxy-client.c | 86 +++++++++++++++++++++
1 file changed, 86 insertions(+)
diff --git a/drivers/net/ethernet/ti/cpsw-proxy-client.c b/drivers/net/ethernet/ti/cpsw-proxy-client.c
index 408c9f78c059..b42be0d389b8 100644
--- a/drivers/net/ethernet/ti/cpsw-proxy-client.c
+++ b/drivers/net/ethernet/ti/cpsw-proxy-client.c
@@ -1253,8 +1253,94 @@ static u32 vport_get_link(struct net_device *ndev)
return link_up;
}
+static int vport_get_coal(struct net_device *ndev, struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack)
+{
+ struct virtual_port *vport = vport_ndev_to_vport(ndev);
+
+ coal->tx_coalesce_usecs = vport->tx_chans[0].tx_pace_timeout / 1000;
+ coal->rx_coalesce_usecs = vport->rx_chans[0].rx_pace_timeout / 1000;
+ return 0;
+}
+
+static int vport_set_coal(struct net_device *ndev, struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack)
+{
+ struct virtual_port *vport = vport_ndev_to_vport(ndev);
+ struct cpsw_proxy_priv *proxy_priv = vport->proxy_priv;
+ struct device *dev = proxy_priv->dev;
+ u32 i;
+
+ if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20) {
+ dev_err(dev, "TX coalesce must be at least 20 usecs. Defaulting to 20 usecs\n");
+ coal->tx_coalesce_usecs = 20;
+ }
+
+ if (coal->rx_coalesce_usecs && coal->rx_coalesce_usecs < 20) {
+ dev_err(dev, "RX coalesce must be at least 20 usecs. Defaulting to 20 usecs\n");
+ coal->rx_coalesce_usecs = 20;
+ }
+
+ /* Since it is possible to set pacing values per TX and RX queue, if per queue value is
+ * not specified, apply it to all available TX and RX queues.
+ */
+
+ for (i = 0; i < vport->num_tx_chan; i++)
+ vport->tx_chans[i].tx_pace_timeout = coal->tx_coalesce_usecs * 1000;
+
+ for (i = 0; i < vport->num_rx_chan; i++)
+ vport->rx_chans[i].rx_pace_timeout = coal->rx_coalesce_usecs * 1000;
+
+ return 0;
+}
+
+static int vport_get_per_q_coal(struct net_device *ndev, u32 q,
+ struct ethtool_coalesce *coal)
+{
+ struct virtual_port *vport = vport_ndev_to_vport(ndev);
+
+ if (q >= vport->num_tx_chan || q >= vport->num_rx_chan)
+ return -EINVAL;
+
+ coal->tx_coalesce_usecs = vport->tx_chans[q].tx_pace_timeout / 1000;
+ coal->rx_coalesce_usecs = vport->rx_chans[q].rx_pace_timeout / 1000;
+
+ return 0;
+}
+
+static int vport_set_per_q_coal(struct net_device *ndev, u32 q,
+ struct ethtool_coalesce *coal)
+{ struct virtual_port *vport = vport_ndev_to_vport(ndev);
+ struct device *dev = vport->proxy_priv->dev;
+
+ if (q >= vport->num_tx_chan || q >= vport->num_rx_chan)
+ return -EINVAL;
+
+ if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20) {
+ dev_err(dev, "TX coalesce must be at least 20 usecs. Defaulting to 20 usecs\n");
+ coal->tx_coalesce_usecs = 20;
+ }
+
+ if (coal->rx_coalesce_usecs && coal->rx_coalesce_usecs < 20) {
+ dev_err(dev, "RX coalesce must be at least 20 usecs. Defaulting to 20 usecs\n");
+ coal->rx_coalesce_usecs = 20;
+ }
+
+ vport->tx_chans[q].tx_pace_timeout = coal->tx_coalesce_usecs * 1000;
+ vport->rx_chans[q].rx_pace_timeout = coal->rx_coalesce_usecs * 1000;
+
+ return 0;
+}
+
const struct ethtool_ops cpsw_proxy_client_ethtool_ops = {
.get_link = vport_get_link,
+ .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
+ .get_coalesce = vport_get_coal,
+ .set_coalesce = vport_set_coal,
+ .get_per_queue_coalesce = vport_get_per_q_coal,
+ .set_per_queue_coalesce = vport_set_per_q_coal,
};
static int register_mac(struct virtual_port *vport)
--
2.40.1
