@@ -18,6 +18,7 @@
#include <linux/netdevice.h>
#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
#include "enic_res.h"
#include "enic.h"
@@ -379,6 +380,34 @@ static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
return ret;
}
+static void enic_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct enic *enic = netdev_priv(netdev);
+
+ ring->rx_max_pending = enic->rq[0].ring.desc_count;
+ ring->rx_pending = enic->rq[0].ring.desc_count;
+ ring->tx_max_pending = enic->wq[0].ring.desc_count;
+ ring->tx_pending = enic->wq[0].ring.desc_count;
+ ring->rx_copybreak_pending = enic->rx_copybreak;
+ ring->rx_max_copybreak_pending = netdev->mtu + VLAN_ETH_HLEN;
+}
+
+static int enic_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct enic *enic = netdev_priv(netdev);
+
+ if (ring->rx_copybreak_pending > (netdev->mtu + VLAN_ETH_HLEN) ||
+ enic->rq[0].ring.desc_count != ring->rx_pending ||
+ enic->wq[0].ring.desc_count != ring->tx_pending ||
+ ring->rx_mini_pending || ring->rx_jumbo_pending)
+ return -EINVAL;
+ enic->rx_copybreak = ring->rx_copybreak_pending;
+
+ return 0;
+}
+
static const struct ethtool_ops enic_ethtool_ops = {
.get_settings = enic_get_settings,
.get_drvinfo = enic_get_drvinfo,
@@ -391,6 +420,8 @@ static const struct ethtool_ops enic_ethtool_ops = {
.get_coalesce = enic_get_coalesce,
.set_coalesce = enic_set_coalesce,
.get_rxnfc = enic_get_rxnfc,
+ .get_ringparam = enic_get_ringparam,
+ .set_ringparam = enic_set_ringparam,
};
void enic_set_ethtool_ops(struct net_device *netdev)
This patch provides set_ringparam & get_ringparam ethtool_ops to set/get rx_copybreak. As of now, enic does not support change of rx/tx ring size. Allow change of rx_copybreak alone. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> --- drivers/net/ethernet/cisco/enic/enic_ethtool.c | 31 ++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)