1 files changed, 458 insertions, 0 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
new file mode 100644
index 000000000000..be28a9a7f033
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
@@ -0,0 +1,458 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/ethtool.h>
+#include <linux/vmalloc.h>
+
+#include "hinic_hw_qp.h"
+#include "hinic_hw_dev.h"
+#include "hinic_port.h"
+#include "hinic_tx.h"
+#include "hinic_rx.h"
+#include "hinic_dev.h"
+
+static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
+			   enum hinic_speed speed)
+{
+	switch (speed) {
+	case HINIC_SPEED_10MB_LINK:
+		link_ksettings->base.speed = SPEED_10;
+		break;
+
+	case HINIC_SPEED_100MB_LINK:
+		link_ksettings->base.speed = SPEED_100;
+		break;
+
+	case HINIC_SPEED_1000MB_LINK:
+		link_ksettings->base.speed = SPEED_1000;
+		break;
+
+	case HINIC_SPEED_10GB_LINK:
+		link_ksettings->base.speed = SPEED_10000;
+		break;
+
+	case HINIC_SPEED_25GB_LINK:
+		link_ksettings->base.speed = SPEED_25000;
+		break;
+
+	case HINIC_SPEED_40GB_LINK:
+		link_ksettings->base.speed = SPEED_40000;
+		break;
+
+	case HINIC_SPEED_100GB_LINK:
+		link_ksettings->base.speed = SPEED_100000;
+		break;
+
+	default:
+		link_ksettings->base.speed = SPEED_UNKNOWN;
+		break;
+	}
+}
+
+static int hinic_get_link_ksettings(struct net_device *netdev,
+				    struct ethtool_link_ksettings
+				    *link_ksettings)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	enum hinic_port_link_state link_state;
+	struct hinic_port_cap port_cap;
+	int err;
+
+	ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
+	ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
+					     Autoneg);
+
+	link_ksettings->base.speed = SPEED_UNKNOWN;
+	link_ksettings->base.autoneg = AUTONEG_DISABLE;
+	link_ksettings->base.duplex = DUPLEX_UNKNOWN;
+
+	err = hinic_port_get_cap(nic_dev, &port_cap);
+	if (err)
+		return err;
+
+	err = hinic_port_link_state(nic_dev, &link_state);
+	if (err)
+		return err;
+
+	if (link_state != HINIC_LINK_STATE_UP)
+		return err;
+
+	set_link_speed(link_ksettings, port_cap.speed);
+
+	if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
+		ethtool_link_ksettings_add_link_mode(link_ksettings,
+						     advertising, Autoneg);
+
+	if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
+		link_ksettings->base.autoneg = AUTONEG_ENABLE;
+
+	link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
+					   DUPLEX_FULL : DUPLEX_HALF;
+	return 0;
+}
+
+static void hinic_get_drvinfo(struct net_device *netdev,
+			      struct ethtool_drvinfo *info)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+
+	strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
+	strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
+}
+
+static void hinic_get_ringparam(struct net_device *netdev,
+				struct ethtool_ringparam *ring)
+{
+	ring->rx_max_pending = HINIC_RQ_DEPTH;
+	ring->tx_max_pending = HINIC_SQ_DEPTH;
+	ring->rx_pending = HINIC_RQ_DEPTH;
+	ring->tx_pending = HINIC_SQ_DEPTH;
+}
+
+static void hinic_get_channels(struct net_device *netdev,
+			       struct ethtool_channels *channels)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+
+	channels->max_rx = hwdev->nic_cap.max_qps;
+	channels->max_tx = hwdev->nic_cap.max_qps;
+	channels->max_other = 0;
+	channels->max_combined = 0;
+	channels->rx_count = hinic_hwdev_num_qps(hwdev);
+	channels->tx_count = hinic_hwdev_num_qps(hwdev);
+	channels->other_count = 0;
+	channels->combined_count = 0;
+}
+
+static int hinic_get_rss_hash_opts(struct hinic_dev *nic_dev,
+				   struct ethtool_rxnfc *cmd)
+{
+	struct hinic_rss_type rss_type = { 0 };
+	int err;
+
+	cmd->data = 0;
+
+	if (!(nic_dev->flags & HINIC_RSS_ENABLE))
+		return 0;
+
+	err = hinic_get_rss_type(nic_dev, nic_dev->rss_tmpl_idx,
+				 &rss_type);
+	if (err)
+		return err;
+
+	cmd->data = RXH_IP_SRC | RXH_IP_DST;
+	switch (cmd->flow_type) {
+	case TCP_V4_FLOW:
+		if (rss_type.tcp_ipv4)
+			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case TCP_V6_FLOW:
+		if (rss_type.tcp_ipv6)
+			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case UDP_V4_FLOW:
+		if (rss_type.udp_ipv4)
+			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case UDP_V6_FLOW:
+		if (rss_type.udp_ipv6)
+			cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+		break;
+	case IPV4_FLOW:
+	case IPV6_FLOW:
+		break;
+	default:
+		cmd->data = 0;
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int set_l4_rss_hash_ops(struct ethtool_rxnfc *cmd,
+			       struct hinic_rss_type *rss_type)
+{
+	u8 rss_l4_en = 0;
+
+	switch (cmd->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
+	case 0:
+		rss_l4_en = 0;
+		break;
+	case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
+		rss_l4_en = 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (cmd->flow_type) {
+	case TCP_V4_FLOW:
+		rss_type->tcp_ipv4 = rss_l4_en;
+		break;
+	case TCP_V6_FLOW:
+		rss_type->tcp_ipv6 = rss_l4_en;
+		break;
+	case UDP_V4_FLOW:
+		rss_type->udp_ipv4 = rss_l4_en;
+		break;
+	case UDP_V6_FLOW:
+		rss_type->udp_ipv6 = rss_l4_en;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int hinic_set_rss_hash_opts(struct hinic_dev *nic_dev,
+				   struct ethtool_rxnfc *cmd)
+{
+	struct hinic_rss_type *rss_type = &nic_dev->rss_type;
+	int err;
+
+	if (!(nic_dev->flags & HINIC_RSS_ENABLE)) {
+		cmd->data = 0;
+		return -EOPNOTSUPP;
+	}
+
+	/* RSS does not support anything other than hashing
+	 * to queues on src and dst IPs and ports
+	 */
+	if (cmd->data & ~(RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 |
+		RXH_L4_B_2_3))
+		return -EINVAL;
+
+	/* We need at least the IP SRC and DEST fields for hashing */
+	if (!(cmd->data & RXH_IP_SRC) || !(cmd->data & RXH_IP_DST))
+		return -EINVAL;
+
+	err = hinic_get_rss_type(nic_dev,
+				 nic_dev->rss_tmpl_idx, rss_type);
+	if (err)
+		return -EFAULT;
+
+	switch (cmd->flow_type) {
+	case TCP_V4_FLOW:
+	case TCP_V6_FLOW:
+	case UDP_V4_FLOW:
+	case UDP_V6_FLOW:
+		err = set_l4_rss_hash_ops(cmd, rss_type);
+		if (err)
+			return err;
+		break;
+	case IPV4_FLOW:
+		rss_type->ipv4 = 1;
+		break;
+	case IPV6_FLOW:
+		rss_type->ipv6 = 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	err = hinic_set_rss_type(nic_dev, nic_dev->rss_tmpl_idx,
+				 *rss_type);
+	if (err)
+		return -EFAULT;
+
+	return 0;
+}
+
+static int __set_rss_rxfh(struct net_device *netdev,
+			  const u32 *indir, const u8 *key)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err;
+
+	if (indir) {
+		if (!nic_dev->rss_indir_user) {
+			nic_dev->rss_indir_user =
+				kzalloc(sizeof(u32) * HINIC_RSS_INDIR_SIZE,
+					GFP_KERNEL);
+			if (!nic_dev->rss_indir_user)
+				return -ENOMEM;
+		}
+
+		memcpy(nic_dev->rss_indir_user, indir,
+		       sizeof(u32) * HINIC_RSS_INDIR_SIZE);
+
+		err = hinic_rss_set_indir_tbl(nic_dev,
+					      nic_dev->rss_tmpl_idx, indir);
+		if (err)
+			return -EFAULT;
+	}
+
+	if (key) {
+		if (!nic_dev->rss_hkey_user) {
+			nic_dev->rss_hkey_user =
+				kzalloc(HINIC_RSS_KEY_SIZE * 2, GFP_KERNEL);
+
+			if (!nic_dev->rss_hkey_user)
+				return -ENOMEM;
+		}
+
+		memcpy(nic_dev->rss_hkey_user, key, HINIC_RSS_KEY_SIZE);
+
+		err = hinic_rss_set_template_tbl(nic_dev,
+						 nic_dev->rss_tmpl_idx, key);
+		if (err)
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+static int hinic_get_rxnfc(struct net_device *netdev,
+			   struct ethtool_rxnfc *cmd, u32 *rule_locs)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_GRXRINGS:
+		cmd->data = nic_dev->num_qps;
+		break;
+	case ETHTOOL_GRXFH:
+		err = hinic_get_rss_hash_opts(nic_dev, cmd);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static int hinic_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err = 0;
+
+	switch (cmd->cmd) {
+	case ETHTOOL_SRXFH:
+		err = hinic_set_rss_hash_opts(nic_dev, cmd);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static int hinic_get_rxfh(struct net_device *netdev,
+			  u32 *indir, u8 *key, u8 *hfunc)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u8 hash_engine_type = 0;
+	int err = 0;
+
+	if (!(nic_dev->flags & HINIC_RSS_ENABLE))
+		return -EOPNOTSUPP;
+
+	if (hfunc) {
+		err = hinic_rss_get_hash_engine(nic_dev,
+						nic_dev->rss_tmpl_idx,
+						&hash_engine_type);
+		if (err)
+			return -EFAULT;
+
+		*hfunc = hash_engine_type ? ETH_RSS_HASH_TOP : ETH_RSS_HASH_XOR;
+	}
+
+	if (indir) {
+		err = hinic_rss_get_indir_tbl(nic_dev,
+					      nic_dev->rss_tmpl_idx, indir);
+		if (err)
+			return -EFAULT;
+	}
+
+	if (key)
+		err = hinic_rss_get_template_tbl(nic_dev,
+						 nic_dev->rss_tmpl_idx, key);
+
+	return err;
+}
+
+static int hinic_set_rxfh(struct net_device *netdev, const u32 *indir,
+			  const u8 *key, const u8 hfunc)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err = 0;
+
+	if (!(nic_dev->flags & HINIC_RSS_ENABLE))
+		return -EOPNOTSUPP;
+
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE) {
+		if (hfunc != ETH_RSS_HASH_TOP && hfunc != ETH_RSS_HASH_XOR)
+			return -EOPNOTSUPP;
+
+		nic_dev->rss_hash_engine = (hfunc == ETH_RSS_HASH_XOR) ?
+			HINIC_RSS_HASH_ENGINE_TYPE_XOR :
+			HINIC_RSS_HASH_ENGINE_TYPE_TOEP;
+		err = hinic_rss_set_hash_engine
+			(nic_dev, nic_dev->rss_tmpl_idx,
+			nic_dev->rss_hash_engine);
+		if (err)
+			return -EFAULT;
+	}
+
+	err = __set_rss_rxfh(netdev, indir, key);
+
+	return err;
+}
+
+static u32 hinic_get_rxfh_key_size(struct net_device *netdev)
+{
+	return HINIC_RSS_KEY_SIZE;
+}
+
+static u32 hinic_get_rxfh_indir_size(struct net_device *netdev)
+{
+	return HINIC_RSS_INDIR_SIZE;
+}
+
+static const struct ethtool_ops hinic_ethtool_ops = {
+	.get_link_ksettings = hinic_get_link_ksettings,
+	.get_drvinfo = hinic_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_ringparam = hinic_get_ringparam,
+	.get_channels = hinic_get_channels,
+	.get_rxnfc = hinic_get_rxnfc,
+	.set_rxnfc = hinic_set_rxnfc,
+	.get_rxfh_key_size = hinic_get_rxfh_key_size,
+	.get_rxfh_indir_size = hinic_get_rxfh_indir_size,
+	.get_rxfh = hinic_get_rxfh,
+	.set_rxfh = hinic_set_rxfh,
+};
+
+void hinic_set_ethtool_ops(struct net_device *netdev)
+{
+	netdev->ethtool_ops = &hinic_ethtool_ops;
+}