qede: Add support for coalescing config read/update.

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 6836d44..6228482 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -426,6 +426,57 @@ static u32 qede_get_link(struct net_device *dev)
        return current_link.link_up;
 }
 
+static int qede_get_coalesce(struct net_device *dev,
+                            struct ethtool_coalesce *coal)
+{
+       struct qede_dev *edev = netdev_priv(dev);
+
+       memset(coal, 0, sizeof(struct ethtool_coalesce));
+       edev->ops->common->get_coalesce(edev->cdev,
+                                       (u16 *)&coal->rx_coalesce_usecs,
+                                       (u16 *)&coal->tx_coalesce_usecs);
+
+       return 0;
+}
+
+static int qede_set_coalesce(struct net_device *dev,
+                            struct ethtool_coalesce *coal)
+{
+       struct qede_dev *edev = netdev_priv(dev);
+       int i, rc = 0;
+       u16 rxc, txc;
+       u8 sb_id;
+
+       if (!netif_running(dev)) {
+               DP_INFO(edev, "Interface is down\n");
+               return -EINVAL;
+       }
+
+       if (coal->rx_coalesce_usecs > QED_COALESCE_MAX ||
+           coal->tx_coalesce_usecs > QED_COALESCE_MAX) {
+               DP_INFO(edev,
+                       "Can't support requested %s coalesce value [max supported value %d]\n",
+                       coal->rx_coalesce_usecs > QED_COALESCE_MAX ? "rx"
+                                                                  : "tx",
+                       QED_COALESCE_MAX);
+               return -EINVAL;
+       }
+
+       rxc = (u16)coal->rx_coalesce_usecs;
+       txc = (u16)coal->tx_coalesce_usecs;
+       for_each_rss(i) {
+               sb_id = edev->fp_array[i].sb_info->igu_sb_id;
+               rc = edev->ops->common->set_coalesce(edev->cdev, rxc, txc,
+                                                    (u8)i, sb_id);
+               if (rc) {
+                       DP_INFO(edev, "Set coalesce error, rc = %d\n", rc);
+                       return rc;
+               }
+       }
+
+       return rc;
+}
+
 static void qede_get_ringparam(struct net_device *dev,
                               struct ethtool_ringparam *ering)
 {
@@ -1139,6 +1190,8 @@ static const struct ethtool_ops qede_ethtool_ops = {
        .set_msglevel = qede_set_msglevel,
        .nway_reset = qede_nway_reset,
        .get_link = qede_get_link,
+       .get_coalesce = qede_get_coalesce,
+       .set_coalesce = qede_set_coalesce,
        .get_ringparam = qede_get_ringparam,
        .set_ringparam = qede_set_ringparam,
        .get_pauseparam = qede_get_pauseparam,