[PATCH V2 net-next 0/7] net: hns3: updates for -next

[PATCH V2 net-next 0/7] net: hns3: updates for -next

[Huazhong Tan]

This series includes some updates for the HNS3 ethernet driver.

#1~#6: add some updates related to the checksum offload.
#7: add support for multiple TCs' MAC pauce mode.

change log:
V2: fixes some sparse errors in #1 & #5.

previous version:
V1: https://patchwork.kernel.org/project/netdevbpf/cover/1606466842-57749-1-git-send-email-tanhuazhong@huawei.com/

Huazhong Tan (6):
  net: hns3: add support for RX completion checksum
  net: hns3: add support for TX hardware checksum offload
  net: hns3: remove unsupported NETIF_F_GSO_UDP_TUNNEL_CSUM
  net: hns3: add udp tunnel checksum segmentation support
  net: hns3: add more info to hns3_dbg_bd_info()
  net: hns3: add a check for devcie's verion in hns3_tunnel_csum_bug()

Yonglong Liu (1):
  net: hns3: keep MAC pause mode when multiple TCs are enabled

 drivers/net/ethernet/hisilicon/hns3/hnae3.h        |   7 +-
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c |  62 ++++++++--
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    | 131 ++++++++++++++++-----
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    |  21 +++-
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c |   1 +
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c |   4 +
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h |   3 +-
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c  |  23 +++-
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c   |   4 +
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h   |   3 +-
 10 files changed, 207 insertions(+), 52 deletions(-)

-- 
2.7.4

[PATCH V2 net-next 1/7] net: hns3: add support for RX completion checksum

[Huazhong Tan]

In some cases (for example ip fragment), hardware will
calculate the checksum of whole packet in RX, and setup
the HNS3_RXD_L2_CSUM_B flag in the descriptor, so add
support to utilize this checksum.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    | 21 +++++++++++++++++++++
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    |  7 +++++++
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c |  1 +
 3 files changed, 29 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 632ad42..1647877 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2798,6 +2798,22 @@ static int hns3_gro_complete(struct sk_buff *skb, u32 l234info)
 	return 0;
 }
 
+static void hns3_checksum_complete(struct hns3_enet_ring *ring,
+				   struct sk_buff *skb, u32 l234info)
+{
+	u32 lo, hi;
+
+	u64_stats_update_begin(&ring->syncp);
+	ring->stats.csum_complete++;
+	u64_stats_update_end(&ring->syncp);
+	skb->ip_summed = CHECKSUM_COMPLETE;
+	lo = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_L_M,
+			     HNS3_RXD_L2_CSUM_L_S);
+	hi = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_H_M,
+			     HNS3_RXD_L2_CSUM_H_S);
+	skb->csum = csum_unfold((__force __sum16)(lo | hi << 8));
+}
+
 static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
 			     u32 l234info, u32 bd_base_info, u32 ol_info)
 {
@@ -2812,6 +2828,11 @@ static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
 	if (!(netdev->features & NETIF_F_RXCSUM))
 		return;
 
+	if (l234info & BIT(HNS3_RXD_L2_CSUM_B)) {
+		hns3_checksum_complete(ring, skb, l234info);
+		return;
+	}
+
 	/* check if hardware has done checksum */
 	if (!(bd_base_info & BIT(HNS3_RXD_L3L4P_B)))
 		return;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
index 8d33652..40681a0 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -82,6 +82,12 @@ enum hns3_nic_state {
 #define HNS3_RXD_STRP_TAGP_S			13
 #define HNS3_RXD_STRP_TAGP_M			(0x3 << HNS3_RXD_STRP_TAGP_S)
 
+#define HNS3_RXD_L2_CSUM_B			15
+#define HNS3_RXD_L2_CSUM_L_S			4
+#define HNS3_RXD_L2_CSUM_L_M			(0xff << HNS3_RXD_L2_CSUM_L_S)
+#define HNS3_RXD_L2_CSUM_H_S			24
+#define HNS3_RXD_L2_CSUM_H_M			(0xff << HNS3_RXD_L2_CSUM_H_S)
+
 #define HNS3_RXD_L2E_B				16
 #define HNS3_RXD_L3E_B				17
 #define HNS3_RXD_L4E_B				18
@@ -371,6 +377,7 @@ struct ring_stats {
 			u64 err_bd_num;
 			u64 l2_err;
 			u64 l3l4_csum_err;
+			u64 csum_complete;
 			u64 rx_multicast;
 			u64 non_reuse_pg;
 		};
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index c30d5d3..3cca3c1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -55,6 +55,7 @@ static const struct hns3_stats hns3_rxq_stats[] = {
 	HNS3_TQP_STAT("err_bd_num", err_bd_num),
 	HNS3_TQP_STAT("l2_err", l2_err),
 	HNS3_TQP_STAT("l3l4_csum_err", l3l4_csum_err),
+	HNS3_TQP_STAT("csum_complete", csum_complete),
 	HNS3_TQP_STAT("multicast", rx_multicast),
 	HNS3_TQP_STAT("non_reuse_pg", non_reuse_pg),
 };
-- 
2.7.4

[PATCH V2 net-next 2/7] net: hns3: add support for TX hardware checksum offload

[Huazhong Tan]

For the device that supports TX hardware checksum, the hardware
can calculate the checksum from the start and fill the checksum
to the offset position, which reduces the operations of
calculating the type and header length of L3/L4. So add this
feature for the HNS3 ethernet driver.

The previous simple BD description is unsuitable, rename it as
HW TX CSUM.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hnae3.h        |  6 +--
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c |  6 ++-
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    | 62 ++++++++++++++++++----
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    | 10 +++-
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c |  2 +
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h |  2 +-
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c   |  2 +
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h   |  2 +-
 8 files changed, 74 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index f6fac24..0632607 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -81,7 +81,7 @@ enum HNAE3_DEV_CAP_BITS {
 	HNAE3_DEV_SUPPORT_FD_FORWARD_TC_B,
 	HNAE3_DEV_SUPPORT_PTP_B,
 	HNAE3_DEV_SUPPORT_INT_QL_B,
-	HNAE3_DEV_SUPPORT_SIMPLE_BD_B,
+	HNAE3_DEV_SUPPORT_HW_TX_CSUM_B,
 	HNAE3_DEV_SUPPORT_TX_PUSH_B,
 	HNAE3_DEV_SUPPORT_PHY_IMP_B,
 	HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B,
@@ -113,8 +113,8 @@ enum HNAE3_DEV_CAP_BITS {
 #define hnae3_dev_int_ql_supported(hdev) \
 	test_bit(HNAE3_DEV_SUPPORT_INT_QL_B, (hdev)->ae_dev->caps)
 
-#define hnae3_dev_simple_bd_supported(hdev) \
-	test_bit(HNAE3_DEV_SUPPORT_SIMPLE_BD_B, (hdev)->ae_dev->caps)
+#define hnae3_dev_hw_csum_supported(hdev) \
+	test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, (hdev)->ae_dev->caps)
 
 #define hnae3_dev_tx_push_supported(hdev) \
 	test_bit(HNAE3_DEV_SUPPORT_TX_PUSH_B, (hdev)->ae_dev->caps)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index a5ebca8..044552d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -178,6 +178,7 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	u32 tx_index, rx_index;
 	u32 q_num, value;
 	dma_addr_t addr;
+	u16 mss_hw_csum;
 	int cnt;
 
 	cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index);
@@ -206,6 +207,7 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 
 	tx_desc = &ring->desc[tx_index];
 	addr = le64_to_cpu(tx_desc->addr);
+	mss_hw_csum = le16_to_cpu(tx_desc->tx.mss_hw_csum);
 	dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index);
 	dev_info(dev, "(TX)addr: %pad\n", &addr);
 	dev_info(dev, "(TX)vlan_tag: %u\n", le16_to_cpu(tx_desc->tx.vlan_tag));
@@ -225,7 +227,7 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	dev_info(dev, "(TX)paylen: %u\n", le32_to_cpu(tx_desc->tx.paylen));
 	dev_info(dev, "(TX)vld_ra_ri: %u\n",
 		 le16_to_cpu(tx_desc->tx.bdtp_fe_sc_vld_ra_ri));
-	dev_info(dev, "(TX)mss: %u\n", le16_to_cpu(tx_desc->tx.mss));
+	dev_info(dev, "(TX)mss_hw_csum: %u\n", mss_hw_csum);
 
 	ring = &priv->ring[q_num + h->kinfo.num_tqps];
 	value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG);
@@ -324,6 +326,8 @@ static void hns3_dbg_dev_caps(struct hnae3_handle *h)
 		 test_bit(HNAE3_DEV_SUPPORT_PTP_B, caps) ? "yes" : "no");
 	dev_info(&h->pdev->dev, "support INT QL: %s\n",
 		 test_bit(HNAE3_DEV_SUPPORT_INT_QL_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support HW TX csum: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, caps) ? "yes" : "no");
 }
 
 static void hns3_dbg_dev_specs(struct hnae3_handle *h)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 1647877..904328e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1055,15 +1055,31 @@ static int hns3_handle_vtags(struct hns3_enet_ring *tx_ring,
 	return 0;
 }
 
+/* check if the hardware is capable of checksum offloading */
+static bool hns3_check_hw_tx_csum(struct sk_buff *skb)
+{
+	struct hns3_nic_priv *priv = netdev_priv(skb->dev);
+
+	/* Kindly note, due to backward compatibility of the TX descriptor,
+	 * HW checksum of the non-IP packets and GSO packets is handled at
+	 * different place in the following code
+	 */
+	if (skb->csum_not_inet || skb_is_gso(skb) ||
+	    !test_bit(HNS3_NIC_STATE_HW_TX_CSUM_ENABLE, &priv->state))
+		return false;
+
+	return true;
+}
+
 static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 			      struct sk_buff *skb, struct hns3_desc *desc)
 {
 	u32 ol_type_vlan_len_msec = 0;
 	u32 type_cs_vlan_tso = 0;
 	u32 paylen = skb->len;
+	u16 mss_hw_csum = 0;
 	u16 inner_vtag = 0;
 	u16 out_vtag = 0;
-	u16 mss = 0;
 	int ret;
 
 	ret = hns3_handle_vtags(ring, skb);
@@ -1088,6 +1104,17 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
 		u8 ol4_proto, il4_proto;
 
+		if (hns3_check_hw_tx_csum(skb)) {
+			/* set checksum start and offset, defined in 2 Bytes */
+			hns3_set_field(type_cs_vlan_tso, HNS3_TXD_CSUM_START_S,
+				       skb_checksum_start_offset(skb) >> 1);
+			hns3_set_field(ol_type_vlan_len_msec,
+				       HNS3_TXD_CSUM_OFFSET_S,
+				       skb->csum_offset >> 1);
+			mss_hw_csum |= BIT(HNS3_TXD_HW_CS_B);
+			goto out_hw_tx_csum;
+		}
+
 		skb_reset_mac_len(skb);
 
 		ret = hns3_get_l4_protocol(skb, &ol4_proto, &il4_proto);
@@ -1108,7 +1135,7 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 			return ret;
 		}
 
-		ret = hns3_set_tso(skb, &paylen, &mss,
+		ret = hns3_set_tso(skb, &paylen, &mss_hw_csum,
 				   &type_cs_vlan_tso);
 		if (unlikely(ret < 0)) {
 			u64_stats_update_begin(&ring->syncp);
@@ -1118,12 +1145,13 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 		}
 	}
 
+out_hw_tx_csum:
 	/* Set txbd */
 	desc->tx.ol_type_vlan_len_msec =
 		cpu_to_le32(ol_type_vlan_len_msec);
 	desc->tx.type_cs_vlan_tso_len = cpu_to_le32(type_cs_vlan_tso);
 	desc->tx.paylen = cpu_to_le32(paylen);
-	desc->tx.mss = cpu_to_le16(mss);
+	desc->tx.mss_hw_csum = cpu_to_le16(mss_hw_csum);
 	desc->tx.vlan_tag = cpu_to_le16(inner_vtag);
 	desc->tx.outer_vlan_tag = cpu_to_le16(out_vtag);
 
@@ -2326,8 +2354,7 @@ static void hns3_set_default_feature(struct net_device *netdev)
 
 	netdev->priv_flags |= IFF_UNICAST_FLT;
 
-	netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
-		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+	netdev->hw_enc_features |= NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
 		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
@@ -2335,8 +2362,7 @@ static void hns3_set_default_feature(struct net_device *netdev)
 
 	netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
 
-	netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
-		NETIF_F_HW_VLAN_CTAG_FILTER |
+	netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
 		NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
@@ -2344,16 +2370,15 @@ static void hns3_set_default_feature(struct net_device *netdev)
 		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
 		NETIF_F_FRAGLIST;
 
-	netdev->vlan_features |=
-		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
+	netdev->vlan_features |= NETIF_F_RXCSUM |
 		NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
 		NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
 		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
 		NETIF_F_FRAGLIST;
 
-	netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
-		NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+	netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
+		NETIF_F_HW_VLAN_CTAG_RX |
 		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
@@ -2376,6 +2401,18 @@ static void hns3_set_default_feature(struct net_device *netdev)
 		netdev->vlan_features |= NETIF_F_GSO_UDP_L4;
 		netdev->hw_enc_features |= NETIF_F_GSO_UDP_L4;
 	}
+
+	if (test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps)) {
+		netdev->hw_features |= NETIF_F_HW_CSUM;
+		netdev->features |= NETIF_F_HW_CSUM;
+		netdev->vlan_features |= NETIF_F_HW_CSUM;
+		netdev->hw_enc_features |= NETIF_F_HW_CSUM;
+	} else {
+		netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+		netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+		netdev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+		netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	}
 }
 
 static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
@@ -4178,6 +4215,9 @@ static int hns3_client_init(struct hnae3_handle *handle)
 	/* MTU range: (ETH_MIN_MTU(kernel default) - 9702) */
 	netdev->max_mtu = HNS3_MAX_MTU;
 
+	if (test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps))
+		set_bit(HNS3_NIC_STATE_HW_TX_CSUM_ENABLE, &priv->state);
+
 	set_bit(HNS3_NIC_STATE_INITED, &priv->state);
 
 	if (netif_msg_drv(handle))
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
index 40681a0..5de00fb 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -18,6 +18,7 @@ enum hns3_nic_state {
 	HNS3_NIC_STATE_SERVICE_INITED,
 	HNS3_NIC_STATE_SERVICE_SCHED,
 	HNS3_NIC_STATE2_RESET_REQUESTED,
+	HNS3_NIC_STATE_HW_TX_CSUM_ENABLE,
 	HNS3_NIC_STATE_MAX
 };
 
@@ -145,6 +146,9 @@ enum hns3_nic_state {
 #define HNS3_TXD_L4LEN_S			24
 #define HNS3_TXD_L4LEN_M			(0xff << HNS3_TXD_L4LEN_S)
 
+#define HNS3_TXD_CSUM_START_S		8
+#define HNS3_TXD_CSUM_START_M		(0xffff << HNS3_TXD_CSUM_START_S)
+
 #define HNS3_TXD_OL3T_S				0
 #define HNS3_TXD_OL3T_M				(0x3 << HNS3_TXD_OL3T_S)
 #define HNS3_TXD_OVLAN_B			2
@@ -152,6 +156,9 @@ enum hns3_nic_state {
 #define HNS3_TXD_TUNTYPE_S			4
 #define HNS3_TXD_TUNTYPE_M			(0xf << HNS3_TXD_TUNTYPE_S)
 
+#define HNS3_TXD_CSUM_OFFSET_S		8
+#define HNS3_TXD_CSUM_OFFSET_M		(0xffff << HNS3_TXD_CSUM_OFFSET_S)
+
 #define HNS3_TXD_BDTYPE_S			0
 #define HNS3_TXD_BDTYPE_M			(0xf << HNS3_TXD_BDTYPE_S)
 #define HNS3_TXD_FE_B				4
@@ -167,6 +174,7 @@ enum hns3_nic_state {
 
 #define HNS3_TXD_MSS_S				0
 #define HNS3_TXD_MSS_M				(0x3fff << HNS3_TXD_MSS_S)
+#define HNS3_TXD_HW_CS_B			14
 
 #define HNS3_VECTOR_TX_IRQ			BIT_ULL(0)
 #define HNS3_VECTOR_RX_IRQ			BIT_ULL(1)
@@ -258,7 +266,7 @@ struct __packed hns3_desc {
 
 			__le32 paylen;
 			__le16 bdtp_fe_sc_vld_ra_ri;
-			__le16 mss;
+			__le16 mss_hw_csum;
 		} tx;
 
 		struct {
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
index e6321dd..fbd90e6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -355,6 +355,8 @@ static void hclge_parse_capability(struct hclge_dev *hdev,
 		set_bit(HNAE3_DEV_SUPPORT_INT_QL_B, ae_dev->caps);
 	if (hnae3_get_bit(caps, HCLGE_CAP_TQP_TXRX_INDEP_B))
 		set_bit(HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B, ae_dev->caps);
+	if (hnae3_get_bit(caps, HCLGE_CAP_HW_TX_CSUM_B))
+		set_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps);
 }
 
 static enum hclge_cmd_status
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 6d7ba20..44f92bb 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -376,7 +376,7 @@ enum HCLGE_CAP_BITS {
 	HCLGE_CAP_FD_FORWARD_TC_B,
 	HCLGE_CAP_PTP_B,
 	HCLGE_CAP_INT_QL_B,
-	HCLGE_CAP_SIMPLE_BD_B,
+	HCLGE_CAP_HW_TX_CSUM_B,
 	HCLGE_CAP_TX_PUSH_B,
 	HCLGE_CAP_PHY_IMP_B,
 	HCLGE_CAP_TQP_TXRX_INDEP_B,
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
index 66866c1..a4e7024 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
@@ -336,6 +336,8 @@ static void hclgevf_parse_capability(struct hclgevf_dev *hdev,
 		set_bit(HNAE3_DEV_SUPPORT_INT_QL_B, ae_dev->caps);
 	if (hnae3_get_bit(caps, HCLGEVF_CAP_TQP_TXRX_INDEP_B))
 		set_bit(HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B, ae_dev->caps);
+	if (hnae3_get_bit(caps, HCLGEVF_CAP_HW_TX_CSUM_B))
+		set_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps);
 }
 
 static int hclgevf_cmd_query_version_and_capability(struct hclgevf_dev *hdev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
index 8b34a63..42a8190 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
@@ -152,7 +152,7 @@ enum HCLGEVF_CAP_BITS {
 	HCLGEVF_CAP_FD_FORWARD_TC_B,
 	HCLGEVF_CAP_PTP_B,
 	HCLGEVF_CAP_INT_QL_B,
-	HCLGEVF_CAP_SIMPLE_BD_B,
+	HCLGEVF_CAP_HW_TX_CSUM_B,
 	HCLGEVF_CAP_TX_PUSH_B,
 	HCLGEVF_CAP_PHY_IMP_B,
 	HCLGEVF_CAP_TQP_TXRX_INDEP_B,
-- 
2.7.4

[PATCH V2 net-next 3/7] net: hns3: remove unsupported NETIF_F_GSO_UDP_TUNNEL_CSUM

[Huazhong Tan]

Currently, device V1 and V2 do not support segmentation
offload for UDP based tunnel packet who needs outer UDP
checksum offload, so there is a workaround in the driver
to set the checksum of the outer UDP checksum as zero. This
is not what the user wants, so remove this feature for
device V1 and V2, add support for it later(when the device
has the ability to do that).

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 24 +++++-------------------
 1 file changed, 5 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 904328e..34b8a7d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -723,17 +723,7 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
 	/* tunnel packet */
 	if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
 					 SKB_GSO_GRE_CSUM |
-					 SKB_GSO_UDP_TUNNEL |
-					 SKB_GSO_UDP_TUNNEL_CSUM)) {
-		if ((!(skb_shinfo(skb)->gso_type &
-		    SKB_GSO_PARTIAL)) &&
-		    (skb_shinfo(skb)->gso_type &
-		    SKB_GSO_UDP_TUNNEL_CSUM)) {
-			/* Software should clear the udp's checksum
-			 * field when tso is needed.
-			 */
-			l4.udp->check = 0;
-		}
+					 SKB_GSO_UDP_TUNNEL)) {
 		/* reset l3&l4 pointers from outer to inner headers */
 		l3.hdr = skb_inner_network_header(skb);
 		l4.hdr = skb_inner_transport_header(skb);
@@ -2357,8 +2347,7 @@ static void hns3_set_default_feature(struct net_device *netdev)
 	netdev->hw_enc_features |= NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
-		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
-		NETIF_F_TSO_MANGLEID | NETIF_F_FRAGLIST;
+		NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID | NETIF_F_FRAGLIST;
 
 	netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
 
@@ -2367,23 +2356,20 @@ static void hns3_set_default_feature(struct net_device *netdev)
 		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
-		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
-		NETIF_F_FRAGLIST;
+		NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;
 
 	netdev->vlan_features |= NETIF_F_RXCSUM |
 		NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO |
 		NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
-		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
-		NETIF_F_FRAGLIST;
+		NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;
 
 	netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
 		NETIF_F_HW_VLAN_CTAG_RX |
 		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
 		NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GSO_GRE |
 		NETIF_F_GSO_GRE_CSUM | NETIF_F_GSO_UDP_TUNNEL |
-		NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_SCTP_CRC |
-		NETIF_F_FRAGLIST;
+		NETIF_F_SCTP_CRC | NETIF_F_FRAGLIST;
 
 	if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V2) {
 		netdev->hw_features |= NETIF_F_GRO_HW;
-- 
2.7.4

[PATCH V2 net-next 4/7] net: hns3: add udp tunnel checksum segmentation support

[Huazhong Tan]

For the device who has the capability to handle udp tunnel
checksum segmentation, add support for it.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hnae3.h        |  1 +
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c |  6 +++++-
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c    | 24 ++++++++++++++++------
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h    |  4 +++-
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c |  2 ++
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h |  1 +
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c   |  2 ++
 .../ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h   |  1 +
 8 files changed, 33 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 0632607..78b4886 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -87,6 +87,7 @@ enum HNAE3_DEV_CAP_BITS {
 	HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B,
 	HNAE3_DEV_SUPPORT_HW_PAD_B,
 	HNAE3_DEV_SUPPORT_STASH_B,
+	HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B,
 };
 
 #define hnae3_dev_fd_supported(hdev) \
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 044552d..cb0cc6d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -224,7 +224,8 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len);
 	dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len);
 	dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len);
-	dev_info(dev, "(TX)paylen: %u\n", le32_to_cpu(tx_desc->tx.paylen));
+	dev_info(dev, "(TX)paylen_ol4cs: %u\n",
+		 le32_to_cpu(tx_desc->tx.paylen_ol4cs));
 	dev_info(dev, "(TX)vld_ra_ri: %u\n",
 		 le16_to_cpu(tx_desc->tx.bdtp_fe_sc_vld_ra_ri));
 	dev_info(dev, "(TX)mss_hw_csum: %u\n", mss_hw_csum);
@@ -328,6 +329,9 @@ static void hns3_dbg_dev_caps(struct hnae3_handle *h)
 		 test_bit(HNAE3_DEV_SUPPORT_INT_QL_B, caps) ? "yes" : "no");
 	dev_info(&h->pdev->dev, "support HW TX csum: %s\n",
 		 test_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, caps) ? "yes" : "no");
+	dev_info(&h->pdev->dev, "support UDP tunnel csum: %s\n",
+		 test_bit(HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B, caps) ?
+		 "yes" : "no");
 }
 
 static void hns3_dbg_dev_specs(struct hnae3_handle *h)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 34b8a7d..3ad7f98 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -695,7 +695,7 @@ void hns3_enable_vlan_filter(struct net_device *netdev, bool enable)
 	}
 }
 
-static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
+static int hns3_set_tso(struct sk_buff *skb, u32 *paylen_fdop_ol4cs,
 			u16 *mss, u32 *type_cs_vlan_tso)
 {
 	u32 l4_offset, hdr_len;
@@ -723,7 +723,8 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
 	/* tunnel packet */
 	if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
 					 SKB_GSO_GRE_CSUM |
-					 SKB_GSO_UDP_TUNNEL)) {
+					 SKB_GSO_UDP_TUNNEL |
+					 SKB_GSO_UDP_TUNNEL_CSUM)) {
 		/* reset l3&l4 pointers from outer to inner headers */
 		l3.hdr = skb_inner_network_header(skb);
 		l4.hdr = skb_inner_transport_header(skb);
@@ -752,9 +753,13 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
 	}
 
 	/* find the txbd field values */
-	*paylen = skb->len - hdr_len;
+	*paylen_fdop_ol4cs = skb->len - hdr_len;
 	hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_TSO_B, 1);
 
+	/* offload outer UDP header checksum */
+	if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM)
+		hns3_set_field(*paylen_fdop_ol4cs, HNS3_TXD_OL4CS_B, 1);
+
 	/* get MSS for TSO */
 	*mss = skb_shinfo(skb)->gso_size;
 
@@ -1065,8 +1070,8 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 			      struct sk_buff *skb, struct hns3_desc *desc)
 {
 	u32 ol_type_vlan_len_msec = 0;
+	u32 paylen_ol4cs = skb->len;
 	u32 type_cs_vlan_tso = 0;
-	u32 paylen = skb->len;
 	u16 mss_hw_csum = 0;
 	u16 inner_vtag = 0;
 	u16 out_vtag = 0;
@@ -1125,7 +1130,7 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 			return ret;
 		}
 
-		ret = hns3_set_tso(skb, &paylen, &mss_hw_csum,
+		ret = hns3_set_tso(skb, &paylen_ol4cs, &mss_hw_csum,
 				   &type_cs_vlan_tso);
 		if (unlikely(ret < 0)) {
 			u64_stats_update_begin(&ring->syncp);
@@ -1140,7 +1145,7 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring,
 	desc->tx.ol_type_vlan_len_msec =
 		cpu_to_le32(ol_type_vlan_len_msec);
 	desc->tx.type_cs_vlan_tso_len = cpu_to_le32(type_cs_vlan_tso);
-	desc->tx.paylen = cpu_to_le32(paylen);
+	desc->tx.paylen_ol4cs = cpu_to_le32(paylen_ol4cs);
 	desc->tx.mss_hw_csum = cpu_to_le16(mss_hw_csum);
 	desc->tx.vlan_tag = cpu_to_le16(inner_vtag);
 	desc->tx.outer_vlan_tag = cpu_to_le16(out_vtag);
@@ -2399,6 +2404,13 @@ static void hns3_set_default_feature(struct net_device *netdev)
 		netdev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
 		netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
 	}
+
+	if (test_bit(HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B, ae_dev->caps)) {
+		netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		netdev->vlan_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
+		netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
+	}
 }
 
 static int hns3_alloc_buffer(struct hns3_enet_ring *ring,
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
index 5de00fb..0a7b606 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -172,6 +172,8 @@ enum hns3_nic_state {
 #define HNS3_TXD_DECTTL_S			12
 #define HNS3_TXD_DECTTL_M			(0xf << HNS3_TXD_DECTTL_S)
 
+#define HNS3_TXD_OL4CS_B			22
+
 #define HNS3_TXD_MSS_S				0
 #define HNS3_TXD_MSS_M				(0x3fff << HNS3_TXD_MSS_S)
 #define HNS3_TXD_HW_CS_B			14
@@ -264,7 +266,7 @@ struct __packed hns3_desc {
 			};
 		};
 
-			__le32 paylen;
+			__le32 paylen_ol4cs;
 			__le16 bdtp_fe_sc_vld_ra_ri;
 			__le16 mss_hw_csum;
 		} tx;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
index fbd90e6..85986c7 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -357,6 +357,8 @@ static void hclge_parse_capability(struct hclge_dev *hdev,
 		set_bit(HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B, ae_dev->caps);
 	if (hnae3_get_bit(caps, HCLGE_CAP_HW_TX_CSUM_B))
 		set_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps);
+	if (hnae3_get_bit(caps, HCLGE_CAP_UDP_TUNNEL_CSUM_B))
+		set_bit(HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B, ae_dev->caps);
 }
 
 static enum hclge_cmd_status
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 44f92bb..49cbd95 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -382,6 +382,7 @@ enum HCLGE_CAP_BITS {
 	HCLGE_CAP_TQP_TXRX_INDEP_B,
 	HCLGE_CAP_HW_PAD_B,
 	HCLGE_CAP_STASH_B,
+	HCLGE_CAP_UDP_TUNNEL_CSUM_B,
 };
 
 #define HCLGE_QUERY_CAP_LENGTH		3
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
index a4e7024..e04c0cf 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
@@ -338,6 +338,8 @@ static void hclgevf_parse_capability(struct hclgevf_dev *hdev,
 		set_bit(HNAE3_DEV_SUPPORT_TQP_TXRX_INDEP_B, ae_dev->caps);
 	if (hnae3_get_bit(caps, HCLGEVF_CAP_HW_TX_CSUM_B))
 		set_bit(HNAE3_DEV_SUPPORT_HW_TX_CSUM_B, ae_dev->caps);
+	if (hnae3_get_bit(caps, HCLGEVF_CAP_UDP_TUNNEL_CSUM_B))
+		set_bit(HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B, ae_dev->caps);
 }
 
 static int hclgevf_cmd_query_version_and_capability(struct hclgevf_dev *hdev)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
index 42a8190..82eed25 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.h
@@ -158,6 +158,7 @@ enum HCLGEVF_CAP_BITS {
 	HCLGEVF_CAP_TQP_TXRX_INDEP_B,
 	HCLGEVF_CAP_HW_PAD_B,
 	HCLGEVF_CAP_STASH_B,
+	HCLGEVF_CAP_UDP_TUNNEL_CSUM_B,
 };
 
 #define HCLGEVF_QUERY_CAP_LENGTH		3
-- 
2.7.4

[PATCH V2 net-next 5/7] net: hns3: add more info to hns3_dbg_bd_info()

[Huazhong Tan]

Since TX hardware checksum and RX completion checksum have been
supported now, so add related information in hns3_dbg_bd_info().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 50 +++++++++++++++++-----
 1 file changed, 40 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index cb0cc6d..cb26742 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -179,6 +179,7 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	u32 q_num, value;
 	dma_addr_t addr;
 	u16 mss_hw_csum;
+	u32 l234info;
 	int cnt;
 
 	cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index);
@@ -213,17 +214,35 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	dev_info(dev, "(TX)vlan_tag: %u\n", le16_to_cpu(tx_desc->tx.vlan_tag));
 	dev_info(dev, "(TX)send_size: %u\n",
 		 le16_to_cpu(tx_desc->tx.send_size));
-	dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso);
-	dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len);
-	dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len);
-	dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len);
+
+	if (mss_hw_csum & BIT(HNS3_TXD_HW_CS_B)) {
+		u32 offset = le32_to_cpu(tx_desc->tx.ol_type_vlan_len_msec);
+		u32 start = le32_to_cpu(tx_desc->tx.type_cs_vlan_tso_len);
+
+		dev_info(dev, "(TX)csum start: %u\n",
+			 hnae3_get_field(start,
+					 HNS3_TXD_CSUM_START_M,
+					 HNS3_TXD_CSUM_START_S));
+		dev_info(dev, "(TX)csum offset: %u\n",
+			 hnae3_get_field(offset,
+					 HNS3_TXD_CSUM_OFFSET_M,
+					 HNS3_TXD_CSUM_OFFSET_S));
+	} else {
+		dev_info(dev, "(TX)vlan_tso: %u\n",
+			 tx_desc->tx.type_cs_vlan_tso);
+		dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len);
+		dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len);
+		dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len);
+		dev_info(dev, "(TX)vlan_msec: %u\n",
+			 tx_desc->tx.ol_type_vlan_msec);
+		dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len);
+		dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len);
+		dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len);
+	}
+
 	dev_info(dev, "(TX)vlan_tag: %u\n",
 		 le16_to_cpu(tx_desc->tx.outer_vlan_tag));
 	dev_info(dev, "(TX)tv: %u\n", le16_to_cpu(tx_desc->tx.tv));
-	dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec);
-	dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len);
-	dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len);
-	dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len);
 	dev_info(dev, "(TX)paylen_ol4cs: %u\n",
 		 le32_to_cpu(tx_desc->tx.paylen_ol4cs));
 	dev_info(dev, "(TX)vld_ra_ri: %u\n",
@@ -236,10 +255,21 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 	rx_desc = &ring->desc[rx_index];
 
 	addr = le64_to_cpu(rx_desc->addr);
+	l234info = le32_to_cpu(rx_desc->rx.l234_info);
 	dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index);
 	dev_info(dev, "(RX)addr: %pad\n", &addr);
-	dev_info(dev, "(RX)l234_info: %u\n",
-		 le32_to_cpu(rx_desc->rx.l234_info));
+	dev_info(dev, "(RX)l234_info: %u\n", l234info);
+
+	if (l234info & BIT(HNS3_RXD_L2_CSUM_B)) {
+		u32 lo, hi;
+
+		lo = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_L_M,
+				     HNS3_RXD_L2_CSUM_L_S);
+		hi = hnae3_get_field(l234info, HNS3_RXD_L2_CSUM_H_M,
+				     HNS3_RXD_L2_CSUM_H_S);
+		dev_info(dev, "(RX)csum: %u\n", lo | hi << 8);
+	}
+
 	dev_info(dev, "(RX)pkt_len: %u\n", le16_to_cpu(rx_desc->rx.pkt_len));
 	dev_info(dev, "(RX)size: %u\n", le16_to_cpu(rx_desc->rx.size));
 	dev_info(dev, "(RX)rss_hash: %u\n", le32_to_cpu(rx_desc->rx.rss_hash));
-- 
2.7.4

[PATCH V2 net-next 6/7] net: hns3: add a check for devcie's verion in hns3_tunnel_csum_bug()

[Huazhong Tan]

For the device whose version is above V3(include V3), the hardware
can do checksum offload for the non-tunnel udp packet, who has
a dest port as the IANA assigned. So add a check for devcie's verion
in hns3_tunnel_csum_bug().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 3ad7f98..1798c0a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -828,8 +828,16 @@ static int hns3_get_l4_protocol(struct sk_buff *skb, u8 *ol4_proto,
  */
 static bool hns3_tunnel_csum_bug(struct sk_buff *skb)
 {
+	struct hns3_nic_priv *priv = netdev_priv(skb->dev);
+	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(priv->ae_handle->pdev);
 	union l4_hdr_info l4;
 
+	/* device version above V3(include V3), the hardware can
+	 * do this checksum offload.
+	 */
+	if (ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
+		return false;
+
 	l4.hdr = skb_transport_header(skb);
 
 	if (!(!skb->encapsulation &&
-- 
2.7.4

[PATCH V2 net-next 7/7] net: hns3: keep MAC pause mode when multiple TCs are enabled

[Huazhong Tan]

From: Yonglong Liu <liuyonglong@huawei.com>

Bellow HNAE3_DEVICE_VERSION_V3, MAC pause mode just support one
TC, when enabled multiple TCs, force enable PFC mode.

HNAE3_DEVICE_VERSION_V3 can support MAC pause mode on multiple
TCs, so when enable multiple TCs, just keep MAC pause mode,
and enable PFC mode just according to the user settings.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c  | 23 +++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 54767b0..b1026cd 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -715,7 +715,7 @@ static void hclge_tm_pg_info_init(struct hclge_dev *hdev)
 	}
 }
 
-static void hclge_pfc_info_init(struct hclge_dev *hdev)
+static void hclge_update_fc_mode_by_dcb_flag(struct hclge_dev *hdev)
 {
 	if (!(hdev->flag & HCLGE_FLAG_DCB_ENABLE)) {
 		if (hdev->fc_mode_last_time == HCLGE_FC_PFC)
@@ -733,6 +733,27 @@ static void hclge_pfc_info_init(struct hclge_dev *hdev)
 	}
 }
 
+static void hclge_update_fc_mode(struct hclge_dev *hdev)
+{
+	if (!hdev->tm_info.pfc_en) {
+		hdev->tm_info.fc_mode = hdev->fc_mode_last_time;
+		return;
+	}
+
+	if (hdev->tm_info.fc_mode != HCLGE_FC_PFC) {
+		hdev->fc_mode_last_time = hdev->tm_info.fc_mode;
+		hdev->tm_info.fc_mode = HCLGE_FC_PFC;
+	}
+}
+
+static void hclge_pfc_info_init(struct hclge_dev *hdev)
+{
+	if (hdev->ae_dev->dev_version >= HNAE3_DEVICE_VERSION_V3)
+		hclge_update_fc_mode(hdev);
+	else
+		hclge_update_fc_mode_by_dcb_flag(hdev);
+}
+
 static void hclge_tm_schd_info_init(struct hclge_dev *hdev)
 {
 	hclge_tm_pg_info_init(hdev);
-- 
2.7.4

Re: [PATCH V2 net-next 0/7] net: hns3: updates for -next

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (refs/heads/master):

On Sat, 28 Nov 2020 11:51:43 +0800 you wrote:
> This series includes some updates for the HNS3 ethernet driver.
> 
> #1~#6: add some updates related to the checksum offload.
> #7: add support for multiple TCs' MAC pauce mode.
> 
> change log:
> V2: fixes some sparse errors in #1 & #5.
> 
> [...]

Here is the summary with links:
  - [V2,net-next,1/7] net: hns3: add support for RX completion checksum
    https://git.kernel.org/netdev/net-next/c/4b2fe769aad9
  - [V2,net-next,2/7] net: hns3: add support for TX hardware checksum offload
    https://git.kernel.org/netdev/net-next/c/66d52f3bf385
  - [V2,net-next,3/7] net: hns3: remove unsupported NETIF_F_GSO_UDP_TUNNEL_CSUM
    https://git.kernel.org/netdev/net-next/c/57e72c121c7f
  - [V2,net-next,4/7] net: hns3: add udp tunnel checksum segmentation support
    https://git.kernel.org/netdev/net-next/c/3e2816219d7c
  - [V2,net-next,5/7] net: hns3: add more info to hns3_dbg_bd_info()
    https://git.kernel.org/netdev/net-next/c/b1533ada7480
  - [V2,net-next,6/7] net: hns3: add a check for devcie's verion in hns3_tunnel_csum_bug()
    https://git.kernel.org/netdev/net-next/c/ade36ccef1d7
  - [V2,net-next,7/7] net: hns3: keep MAC pause mode when multiple TCs are enabled
    https://git.kernel.org/netdev/net-next/c/d78e5b6a6764

You are awesome, thank you!
--
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