linux-kernel - [PATCH V2 net-next 4/5] net:hns: Add support of ethtool TSO set option for Hip06 in HNS

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Date:	Wed, 18 Nov 2015 02:52:26 +0800
From:	Salil <salil.mehta@...wei.com>
To:	<davem@...emloft.net>, <robh+dt@...nel.org>, <pawel.moll@....com>,
	<mark.rutland@....com>, <paul.gortmaker@...driver.com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<catalin.marinas@....com>, <will.deacon@....com>, <arnd@...db.de>,
	<liguozhu@...ilicon.com>, <yisen.zhuang@...wei.com>,
	<dingtianhong@...wei.com>, <zhangfei.gao@...aro.org>,
	<huangdaode@...ilicon.com>, <kenneth-lee-2012@...mail.com>,
	<salil.mehta@...wei.com>, <mehta.salil.lnk@...il.com>,
	<xuwei5@...ilicon.com>, <lisheng011@...wei.com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
	<linuxarm@...wei.com>
Subject: [PATCH V2 net-next 4/5] net:hns: Add support of ethtool TSO set option for Hip06 in HNS

This patch adds the support of ethtool TSO option to V1 patch,
meant to add support of Hip06 SoC to HNS

Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
Signed-off-by: lisheng <lisheng011@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c |   47 +++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 055e14c..a0763ab 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1386,6 +1386,51 @@ static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
 	return ret;
 }
 
+static int hns_nic_set_features(struct net_device *netdev,
+				netdev_features_t features)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	switch (priv->enet_ver) {
+	case AE_VERSION_1:
+		if ((features & NETIF_F_TSO) || (features & NETIF_F_TSO6))
+			netdev_info(netdev, "enet v1 do not support tso!\n");
+	break;
+	default:
+		if ((features & NETIF_F_TSO) || (features & NETIF_F_TSO6)) {
+			priv->ops.fill_desc = fill_tso_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
+			/* The chip only support 7*4096 */
+			netif_set_gso_max_size(netdev, 7 * 4096);
+			h->dev->ops->set_tso_stats(h, 1);
+		} else {
+			priv->ops.fill_desc = fill_v2_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
+			h->dev->ops->set_tso_stats(h, 0);
+		}
+	break;
+	}
+	netdev->features = features;
+	return 0;
+}
+
+static netdev_features_t hns_nic_fix_features(
+		struct net_device *netdev, netdev_features_t features)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+
+	switch (priv->enet_ver) {
+	case AE_VERSION_1:
+		features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
+				NETIF_F_HW_VLAN_CTAG_FILTER);
+		break;
+	default:
+		break;
+	}
+	return features;
+}
+
 /**
  * nic_set_multicast_list - set mutl mac address
  * @netdev: net device
@@ -1481,6 +1526,8 @@ static const struct net_device_ops hns_nic_netdev_ops = {
 	.ndo_set_mac_address = hns_nic_net_set_mac_address,
 	.ndo_change_mtu = hns_nic_change_mtu,
 	.ndo_do_ioctl = hns_nic_do_ioctl,
+	.ndo_set_features = hns_nic_set_features,
+	.ndo_fix_features = hns_nic_fix_features,
 	.ndo_get_stats64 = hns_nic_get_stats64,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller = hns_nic_poll_controller,
-- 
1.7.9.5

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