[PATCH net-next 00/10] net: hns3: some cleanups for -next

[PATCH net-next 00/10] net: hns3: some cleanups for -next

[Guangbin Huang]

To improve code readability and simplicity, this series refactor some
functions in the HNS3 ethernet driver.

Guangbin Huang (3):
  net: hns3: refine function hclge_cfg_mac_speed_dup_hw()
  net: hns3: add new function hclge_tm_schd_mode_tc_base_cfg()
  net: hns3: refine function hclge_tm_pri_q_qs_cfg()

Hao Chen (1):
  net: hns3: refactor hns3_nic_reuse_page()

Jiaran Zhang (1):
  net: hns3: refactor reset_prepare_general retry statement

Jie Wang (1):
  net: hns3: refactor two hns3 debugfs functions

Yufeng Mo (4):
  net: hns3: split function hns3_get_tx_timeo_queue_info()
  net: hns3: split function hns3_nic_get_stats64()
  net: hns3: split function hns3_handle_bdinfo()
  net: hns3: split function hns3_set_l2l3l4()

 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 434 ++++++++++--------
 .../net/ethernet/hisilicon/hns3/hns3_enet.h   |   5 +
 .../hisilicon/hns3/hns3pf/hclge_debugfs.c     |  93 ++--
 .../hisilicon/hns3/hns3pf/hclge_debugfs.h     |   5 +
 .../hisilicon/hns3/hns3pf/hclge_main.c        | 103 ++---
 .../hisilicon/hns3/hns3pf/hclge_main.h        |   5 +
 .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 108 +++--
 .../hisilicon/hns3/hns3vf/hclgevf_main.c      |  32 +-
 8 files changed, 431 insertions(+), 354 deletions(-)

-- 
2.33.0

[PATCH net-next 01/10] net: hns3: refactor reset_prepare_general retry statement

[Guangbin Huang]

From: Jiaran Zhang <zhangjiaran@huawei.com>

Currently, the hclge_reset_prepare_general function uses the goto
statement to jump upwards, which increases code complexity and makes
the program structure difficult to understand. In addition, if
reset_pending is set, retry_cnt cannot be increased. This may result
in a failure to exit the retry or increase the number of retries.

Use the while statement instead to make the program easier to understand
and solve the problem that the goto statement cannot be exited.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../hisilicon/hns3/hns3pf/hclge_main.c        | 32 ++++++++-----------
 .../hisilicon/hns3/hns3vf/hclgevf_main.c      | 32 ++++++++-----------
 2 files changed, 28 insertions(+), 36 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index a0628d139149..5282f2632b3b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -11589,24 +11589,20 @@ static void hclge_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
 	int retry_cnt = 0;
 	int ret;
 
-retry:
-	down(&hdev->reset_sem);
-	set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
-	hdev->reset_type = rst_type;
-	ret = hclge_reset_prepare(hdev);
-	if (ret || hdev->reset_pending) {
-		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
-			ret);
-		if (hdev->reset_pending ||
-		    retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
-			dev_err(&hdev->pdev->dev,
-				"reset_pending:0x%lx, retry_cnt:%d\n",
-				hdev->reset_pending, retry_cnt);
-			clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
-			up(&hdev->reset_sem);
-			msleep(HCLGE_RESET_RETRY_WAIT_MS);
-			goto retry;
-		}
+	while (retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
+		down(&hdev->reset_sem);
+		set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
+		hdev->reset_type = rst_type;
+		ret = hclge_reset_prepare(hdev);
+		if (!ret && !hdev->reset_pending)
+			break;
+
+		dev_err(&hdev->pdev->dev,
+			"failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
+			ret, hdev->reset_pending, retry_cnt);
+		clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
+		up(&hdev->reset_sem);
+		msleep(HCLGE_RESET_RETRY_WAIT_MS);
 	}
 
 	/* disable misc vector before reset done */
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 3f29062eaf2e..0568cc31d391 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -2166,24 +2166,20 @@ static void hclgevf_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
 	int retry_cnt = 0;
 	int ret;
 
-retry:
-	down(&hdev->reset_sem);
-	set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
-	hdev->reset_type = rst_type;
-	ret = hclgevf_reset_prepare(hdev);
-	if (ret) {
-		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
-			ret);
-		if (hdev->reset_pending ||
-		    retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
-			dev_err(&hdev->pdev->dev,
-				"reset_pending:0x%lx, retry_cnt:%d\n",
-				hdev->reset_pending, retry_cnt);
-			clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
-			up(&hdev->reset_sem);
-			msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
-			goto retry;
-		}
+	while (retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
+		down(&hdev->reset_sem);
+		set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
+		hdev->reset_type = rst_type;
+		ret = hclgevf_reset_prepare(hdev);
+		if (!ret && !hdev->reset_pending)
+			break;
+
+		dev_err(&hdev->pdev->dev,
+			"failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
+			ret, hdev->reset_pending, retry_cnt);
+		clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
+		up(&hdev->reset_sem);
+		msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
 	}
 
 	/* disable misc vector before reset done */
-- 
2.33.0

[PATCH net-next 02/10] net: hns3: refactor hns3_nic_reuse_page()

[Guangbin Huang]

From: Hao Chen <chenhao288@hisilicon.com>

Split rx copybreak handle into a separate function from function
hns3_nic_reuse_page() to improve code simplicity.

Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 55 ++++++++++++-------
 1 file changed, 35 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 3eb2985b9c8d..731cefb3563c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3546,6 +3546,38 @@ static bool hns3_can_reuse_page(struct hns3_desc_cb *cb)
 	return page_count(cb->priv) == cb->pagecnt_bias;
 }
 
+static int hns3_handle_rx_copybreak(struct sk_buff *skb, int i,
+				    struct hns3_enet_ring *ring,
+				    int pull_len,
+				    struct hns3_desc_cb *desc_cb)
+{
+	struct hns3_desc *desc = &ring->desc[ring->next_to_clean];
+	u32 frag_offset = desc_cb->page_offset + pull_len;
+	int size = le16_to_cpu(desc->rx.size);
+	u32 frag_size = size - pull_len;
+	void *frag = napi_alloc_frag(frag_size);
+
+	if (unlikely(!frag)) {
+		u64_stats_update_begin(&ring->syncp);
+		ring->stats.frag_alloc_err++;
+		u64_stats_update_end(&ring->syncp);
+
+		hns3_rl_err(ring_to_netdev(ring),
+			    "failed to allocate rx frag\n");
+		return -ENOMEM;
+	}
+
+	desc_cb->reuse_flag = 1;
+	memcpy(frag, desc_cb->buf + frag_offset, frag_size);
+	skb_add_rx_frag(skb, i, virt_to_page(frag),
+			offset_in_page(frag), frag_size, frag_size);
+
+	u64_stats_update_begin(&ring->syncp);
+	ring->stats.frag_alloc++;
+	u64_stats_update_end(&ring->syncp);
+	return 0;
+}
+
 static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
 				struct hns3_enet_ring *ring, int pull_len,
 				struct hns3_desc_cb *desc_cb)
@@ -3555,6 +3587,7 @@ static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
 	int size = le16_to_cpu(desc->rx.size);
 	u32 truesize = hns3_buf_size(ring);
 	u32 frag_size = size - pull_len;
+	int ret = 0;
 	bool reused;
 
 	if (ring->page_pool) {
@@ -3589,27 +3622,9 @@ static void hns3_nic_reuse_page(struct sk_buff *skb, int i,
 		desc_cb->page_offset = 0;
 		desc_cb->reuse_flag = 1;
 	} else if (frag_size <= ring->rx_copybreak) {
-		void *frag = napi_alloc_frag(frag_size);
-
-		if (unlikely(!frag)) {
-			u64_stats_update_begin(&ring->syncp);
-			ring->stats.frag_alloc_err++;
-			u64_stats_update_end(&ring->syncp);
-
-			hns3_rl_err(ring_to_netdev(ring),
-				    "failed to allocate rx frag\n");
+		ret = hns3_handle_rx_copybreak(skb, i, ring, pull_len, desc_cb);
+		if (ret)
 			goto out;
-		}
-
-		desc_cb->reuse_flag = 1;
-		memcpy(frag, desc_cb->buf + frag_offset, frag_size);
-		skb_add_rx_frag(skb, i, virt_to_page(frag),
-				offset_in_page(frag), frag_size, frag_size);
-
-		u64_stats_update_begin(&ring->syncp);
-		ring->stats.frag_alloc++;
-		u64_stats_update_end(&ring->syncp);
-		return;
 	}
 
 out:
-- 
2.33.0

[PATCH net-next 03/10] net: hns3: refactor two hns3 debugfs functions

[Guangbin Huang]

From: Jie Wang <wangjie125@huawei.com>

Use for statement to optimize some print work of function
hclge_dbg_dump_rst_info() and hclge_dbg_dump_mac_enable_status() to
improve code simplicity.

Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../hisilicon/hns3/hns3pf/hclge_debugfs.c     | 93 +++++++++----------
 .../hisilicon/hns3/hns3pf/hclge_debugfs.h     |  5 +
 2 files changed, 48 insertions(+), 50 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index 4e0a8c2f7c05..65168125c42e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -258,12 +258,29 @@ hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
 	return 0;
 }
 
+static const struct hclge_dbg_status_dfx_info hclge_dbg_mac_en_status[] = {
+	{HCLGE_MAC_TX_EN_B,  "mac_trans_en"},
+	{HCLGE_MAC_RX_EN_B,  "mac_rcv_en"},
+	{HCLGE_MAC_PAD_TX_B, "pad_trans_en"},
+	{HCLGE_MAC_PAD_RX_B, "pad_rcv_en"},
+	{HCLGE_MAC_1588_TX_B, "1588_trans_en"},
+	{HCLGE_MAC_1588_RX_B, "1588_rcv_en"},
+	{HCLGE_MAC_APP_LP_B,  "mac_app_loop_en"},
+	{HCLGE_MAC_LINE_LP_B, "mac_line_loop_en"},
+	{HCLGE_MAC_FCS_TX_B,  "mac_fcs_tx_en"},
+	{HCLGE_MAC_RX_OVERSIZE_TRUNCATE_B, "mac_rx_oversize_truncate_en"},
+	{HCLGE_MAC_RX_FCS_STRIP_B, "mac_rx_fcs_strip_en"},
+	{HCLGE_MAC_RX_FCS_B, "mac_rx_fcs_en"},
+	{HCLGE_MAC_TX_UNDER_MIN_ERR_B, "mac_tx_under_min_err_en"},
+	{HCLGE_MAC_TX_OVERSIZE_TRUNCATE_B, "mac_tx_oversize_truncate_en"}
+};
+
 static int  hclge_dbg_dump_mac_enable_status(struct hclge_dev *hdev, char *buf,
 					     int len, int *pos)
 {
 	struct hclge_config_mac_mode_cmd *req;
 	struct hclge_desc desc;
-	u32 loop_en;
+	u32 loop_en, i, offset;
 	int ret;
 
 	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CONFIG_MAC_MODE, true);
@@ -278,39 +295,12 @@ static int  hclge_dbg_dump_mac_enable_status(struct hclge_dev *hdev, char *buf,
 	req = (struct hclge_config_mac_mode_cmd *)desc.data;
 	loop_en = le32_to_cpu(req->txrx_pad_fcs_loop_en);
 
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_trans_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_TX_EN_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_rcv_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_RX_EN_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "pad_trans_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_PAD_TX_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "pad_rcv_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_PAD_RX_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "1588_trans_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_1588_TX_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "1588_rcv_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_1588_RX_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_app_loop_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_APP_LP_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_line_loop_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_LINE_LP_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_fcs_tx_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_FCS_TX_B));
-	*pos += scnprintf(buf + *pos, len - *pos,
-			  "mac_rx_oversize_truncate_en: %#x\n",
-			  hnae3_get_bit(loop_en,
-					HCLGE_MAC_RX_OVERSIZE_TRUNCATE_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_rx_fcs_strip_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_RX_FCS_STRIP_B));
-	*pos += scnprintf(buf + *pos, len - *pos, "mac_rx_fcs_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_RX_FCS_B));
-	*pos += scnprintf(buf + *pos, len - *pos,
-			  "mac_tx_under_min_err_en: %#x\n",
-			  hnae3_get_bit(loop_en, HCLGE_MAC_TX_UNDER_MIN_ERR_B));
-	*pos += scnprintf(buf + *pos, len - *pos,
-			  "mac_tx_oversize_truncate_en: %#x\n",
-			  hnae3_get_bit(loop_en,
-					HCLGE_MAC_TX_OVERSIZE_TRUNCATE_B));
+	for (i = 0; i < ARRAY_SIZE(hclge_dbg_mac_en_status); i++) {
+		offset = hclge_dbg_mac_en_status[i].offset;
+		*pos += scnprintf(buf + *pos, len - *pos, "%s: %#x\n",
+				  hclge_dbg_mac_en_status[i].message,
+				  hnae3_get_bit(loop_en, offset));
+	}
 
 	return 0;
 }
@@ -1614,8 +1604,19 @@ static int hclge_dbg_dump_fd_counter(struct hclge_dev *hdev, char *buf, int len)
 	return 0;
 }
 
+static const struct hclge_dbg_status_dfx_info hclge_dbg_rst_info[] = {
+	{HCLGE_MISC_VECTOR_REG_BASE, "vector0 interrupt enable status"},
+	{HCLGE_MISC_RESET_STS_REG,   "reset interrupt source"},
+	{HCLGE_MISC_VECTOR_INT_STS,  "reset interrupt status"},
+	{HCLGE_RAS_PF_OTHER_INT_STS_REG, "RAS interrupt status"},
+	{HCLGE_GLOBAL_RESET_REG,  "hardware reset status"},
+	{HCLGE_NIC_CSQ_DEPTH_REG, "handshake status"},
+	{HCLGE_FUN_RST_ING, "function reset status"}
+};
+
 int hclge_dbg_dump_rst_info(struct hclge_dev *hdev, char *buf, int len)
 {
+	u32 i, offset;
 	int pos = 0;
 
 	pos += scnprintf(buf + pos, len - pos, "PF reset count: %u\n",
@@ -1634,22 +1635,14 @@ int hclge_dbg_dump_rst_info(struct hclge_dev *hdev, char *buf, int len)
 			 hdev->rst_stats.reset_cnt);
 	pos += scnprintf(buf + pos, len - pos, "reset fail count: %u\n",
 			 hdev->rst_stats.reset_fail_cnt);
-	pos += scnprintf(buf + pos, len - pos,
-			 "vector0 interrupt enable status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_MISC_VECTOR_REG_BASE));
-	pos += scnprintf(buf + pos, len - pos, "reset interrupt source: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_MISC_RESET_STS_REG));
-	pos += scnprintf(buf + pos, len - pos, "reset interrupt status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_MISC_VECTOR_INT_STS));
-	pos += scnprintf(buf + pos, len - pos, "RAS interrupt status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw,
-					HCLGE_RAS_PF_OTHER_INT_STS_REG));
-	pos += scnprintf(buf + pos, len - pos, "hardware reset status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_GLOBAL_RESET_REG));
-	pos += scnprintf(buf + pos, len - pos, "handshake status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_NIC_CSQ_DEPTH_REG));
-	pos += scnprintf(buf + pos, len - pos, "function reset status: 0x%x\n",
-			 hclge_read_dev(&hdev->hw, HCLGE_FUN_RST_ING));
+
+	for (i = 0; i < ARRAY_SIZE(hclge_dbg_rst_info); i++) {
+		offset = hclge_dbg_rst_info[i].offset;
+		pos += scnprintf(buf + pos, len - pos, "%s: 0x%x\n",
+				 hclge_dbg_rst_info[i].message,
+				 hclge_read_dev(&hdev->hw, offset));
+	}
+
 	pos += scnprintf(buf + pos, len - pos, "hdev state: 0x%lx\n",
 			 hdev->state);
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.h
index 5b6018204f92..724052928b88 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.h
@@ -94,6 +94,11 @@ struct hclge_dbg_func {
 			    char *buf, int len);
 };
 
+struct hclge_dbg_status_dfx_info {
+	u32  offset;
+	char message[HCLGE_DBG_MAX_DFX_MSG_LEN];
+};
+
 static const struct hclge_dbg_dfx_message hclge_dbg_bios_common_reg[] = {
 	{false, "Reserved"},
 	{true,	"BP_CPU_STATE"},
-- 
2.33.0

[PATCH net-next 04/10] net: hns3: split function hns3_get_tx_timeo_queue_info()

[Guangbin Huang]

From: Yufeng Mo <moyufeng@huawei.com>

Function hns3_get_tx_timeo_queue_info() is a bit too long. So add two
new functions hns3_dump_queue_stats() and hns3_dump_queue_reg() to
simplify code and improve code readability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 100 +++++++++---------
 .../net/ethernet/hisilicon/hns3/hns3_enet.h   |   5 +
 2 files changed, 57 insertions(+), 48 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 731cefb3563c..cc962e5f563b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2659,18 +2659,8 @@ static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu)
 	return ret;
 }
 
-static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
+static int hns3_get_timeout_queue(struct net_device *ndev)
 {
-	struct hns3_nic_priv *priv = netdev_priv(ndev);
-	struct hnae3_handle *h = hns3_get_handle(ndev);
-	struct hns3_enet_ring *tx_ring;
-	struct napi_struct *napi;
-	int timeout_queue = 0;
-	int hw_head, hw_tail;
-	int fbd_num, fbd_oft;
-	int ebd_num, ebd_oft;
-	int bd_num, bd_err;
-	int ring_en, tc;
 	int i;
 
 	/* Find the stopped queue the same way the stack does */
@@ -2690,7 +2680,6 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 				    dql->last_obj_cnt, dql->num_queued,
 				    dql->adj_limit, dql->num_completed);
 #endif
-			timeout_queue = i;
 			netdev_info(ndev, "queue state: 0x%lx, delta msecs: %u\n",
 				    q->state,
 				    jiffies_to_msecs(jiffies - trans_start));
@@ -2698,17 +2687,15 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 		}
 	}
 
-	if (i == ndev->num_tx_queues) {
-		netdev_info(ndev,
-			    "no netdev TX timeout queue found, timeout count: %llu\n",
-			    priv->tx_timeout_count);
-		return false;
-	}
-
-	priv->tx_timeout_count++;
+	return i;
+}
 
-	tx_ring = &priv->ring[timeout_queue];
-	napi = &tx_ring->tqp_vector->napi;
+static void hns3_dump_queue_stats(struct net_device *ndev,
+				  struct hns3_enet_ring *tx_ring,
+				  int timeout_queue)
+{
+	struct napi_struct *napi = &tx_ring->tqp_vector->napi;
+	struct hns3_nic_priv *priv = netdev_priv(ndev);
 
 	netdev_info(ndev,
 		    "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, napi state: %lu\n",
@@ -2724,6 +2711,48 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 		    "seg_pkt_cnt: %llu, tx_more: %llu, restart_queue: %llu, tx_busy: %llu\n",
 		    tx_ring->stats.seg_pkt_cnt, tx_ring->stats.tx_more,
 		    tx_ring->stats.restart_queue, tx_ring->stats.tx_busy);
+}
+
+static void hns3_dump_queue_reg(struct net_device *ndev,
+				struct hns3_enet_ring *tx_ring)
+{
+	netdev_info(ndev,
+		    "BD_NUM: 0x%x HW_HEAD: 0x%x, HW_TAIL: 0x%x, BD_ERR: 0x%x, INT: 0x%x\n",
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_BD_NUM_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_HEAD_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_TAIL_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_BD_ERR_REG),
+		    readl(tx_ring->tqp_vector->mask_addr));
+	netdev_info(ndev,
+		    "RING_EN: 0x%x, TC: 0x%x, FBD_NUM: 0x%x FBD_OFT: 0x%x, EBD_NUM: 0x%x, EBD_OFT: 0x%x\n",
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_EN_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_TC_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_FBDNUM_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_OFFSET_REG),
+		    hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_EBDNUM_REG),
+		    hns3_tqp_read_reg(tx_ring,
+				      HNS3_RING_TX_RING_EBD_OFFSET_REG));
+}
+
+static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
+{
+	struct hns3_nic_priv *priv = netdev_priv(ndev);
+	struct hnae3_handle *h = hns3_get_handle(ndev);
+	struct hns3_enet_ring *tx_ring;
+	int timeout_queue;
+
+	timeout_queue = hns3_get_timeout_queue(ndev);
+	if (timeout_queue >= ndev->num_tx_queues) {
+		netdev_info(ndev,
+			    "no netdev TX timeout queue found, timeout count: %llu\n",
+			    priv->tx_timeout_count);
+		return false;
+	}
+
+	priv->tx_timeout_count++;
+
+	tx_ring = &priv->ring[timeout_queue];
+	hns3_dump_queue_stats(ndev, tx_ring, timeout_queue);
 
 	/* When mac received many pause frames continuous, it's unable to send
 	 * packets, which may cause tx timeout
@@ -2736,32 +2765,7 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev)
 			    mac_stats.tx_pause_cnt, mac_stats.rx_pause_cnt);
 	}
 
-	hw_head = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_HEAD_REG);
-	hw_tail = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_TAIL_REG);
-	fbd_num = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_FBDNUM_REG);
-	fbd_oft = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_OFFSET_REG);
-	ebd_num = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_EBDNUM_REG);
-	ebd_oft = readl_relaxed(tx_ring->tqp->io_base +
-				HNS3_RING_TX_RING_EBD_OFFSET_REG);
-	bd_num = readl_relaxed(tx_ring->tqp->io_base +
-			       HNS3_RING_TX_RING_BD_NUM_REG);
-	bd_err = readl_relaxed(tx_ring->tqp->io_base +
-			       HNS3_RING_TX_RING_BD_ERR_REG);
-	ring_en = readl_relaxed(tx_ring->tqp->io_base + HNS3_RING_EN_REG);
-	tc = readl_relaxed(tx_ring->tqp->io_base + HNS3_RING_TX_RING_TC_REG);
-
-	netdev_info(ndev,
-		    "BD_NUM: 0x%x HW_HEAD: 0x%x, HW_TAIL: 0x%x, BD_ERR: 0x%x, INT: 0x%x\n",
-		    bd_num, hw_head, hw_tail, bd_err,
-		    readl(tx_ring->tqp_vector->mask_addr));
-	netdev_info(ndev,
-		    "RING_EN: 0x%x, TC: 0x%x, FBD_NUM: 0x%x FBD_OFT: 0x%x, EBD_NUM: 0x%x, EBD_OFT: 0x%x\n",
-		    ring_en, tc, fbd_num, fbd_oft, ebd_num, ebd_oft);
+	hns3_dump_queue_reg(ndev, tx_ring);
 
 	return true;
 }
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
index 361a6390e159..808405cc0280 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -621,6 +621,11 @@ static inline int ring_space(struct hns3_enet_ring *ring)
 			(begin - end)) - 1;
 }
 
+static inline u32 hns3_tqp_read_reg(struct hns3_enet_ring *ring, u32 reg)
+{
+	return readl_relaxed(ring->tqp->io_base + reg);
+}
+
 static inline u32 hns3_read_reg(void __iomem *base, u32 reg)
 {
 	return readl(base + reg);
-- 
2.33.0

[PATCH net-next 05/10] net: hns3: refine function hclge_cfg_mac_speed_dup_hw()

[Guangbin Huang]

To reuse the code of converting speed of driver to speed of firmware in
function hclge_cfg_mac_speed_dup_hw(), encapsulate them into a new
function hclge_convert_to_fw_speed().

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../hisilicon/hns3/hns3pf/hclge_main.c        | 71 +++++++++----------
 .../hisilicon/hns3/hns3pf/hclge_main.h        |  5 ++
 2 files changed, 37 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 5282f2632b3b..7de4c56ef014 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2653,11 +2653,38 @@ static u8 hclge_check_speed_dup(u8 duplex, int speed)
 	return duplex;
 }
 
+struct hclge_mac_speed_map hclge_mac_speed_map_to_fw[] = {
+	{HCLGE_MAC_SPEED_10M, HCLGE_FW_MAC_SPEED_10M},
+	{HCLGE_MAC_SPEED_100M, HCLGE_FW_MAC_SPEED_100M},
+	{HCLGE_MAC_SPEED_1G, HCLGE_FW_MAC_SPEED_1G},
+	{HCLGE_MAC_SPEED_10G, HCLGE_FW_MAC_SPEED_10G},
+	{HCLGE_MAC_SPEED_25G, HCLGE_FW_MAC_SPEED_25G},
+	{HCLGE_MAC_SPEED_40G, HCLGE_FW_MAC_SPEED_40G},
+	{HCLGE_MAC_SPEED_50G, HCLGE_FW_MAC_SPEED_50G},
+	{HCLGE_MAC_SPEED_100G, HCLGE_FW_MAC_SPEED_100G},
+	{HCLGE_MAC_SPEED_200G, HCLGE_FW_MAC_SPEED_200G},
+};
+
+static int hclge_convert_to_fw_speed(u32 speed_drv, u32 *speed_fw)
+{
+	u16 i;
+
+	for (i = 0; i < ARRAY_SIZE(hclge_mac_speed_map_to_fw); i++) {
+		if (hclge_mac_speed_map_to_fw[i].speed_drv == speed_drv) {
+			*speed_fw = hclge_mac_speed_map_to_fw[i].speed_fw;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
 static int hclge_cfg_mac_speed_dup_hw(struct hclge_dev *hdev, int speed,
 				      u8 duplex)
 {
 	struct hclge_config_mac_speed_dup_cmd *req;
 	struct hclge_desc desc;
+	u32 speed_fw;
 	int ret;
 
 	req = (struct hclge_config_mac_speed_dup_cmd *)desc.data;
@@ -2667,48 +2694,14 @@ static int hclge_cfg_mac_speed_dup_hw(struct hclge_dev *hdev, int speed,
 	if (duplex)
 		hnae3_set_bit(req->speed_dup, HCLGE_CFG_DUPLEX_B, 1);
 
-	switch (speed) {
-	case HCLGE_MAC_SPEED_10M:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_10M);
-		break;
-	case HCLGE_MAC_SPEED_100M:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_100M);
-		break;
-	case HCLGE_MAC_SPEED_1G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_1G);
-		break;
-	case HCLGE_MAC_SPEED_10G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_10G);
-		break;
-	case HCLGE_MAC_SPEED_25G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_25G);
-		break;
-	case HCLGE_MAC_SPEED_40G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_40G);
-		break;
-	case HCLGE_MAC_SPEED_50G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_50G);
-		break;
-	case HCLGE_MAC_SPEED_100G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_100G);
-		break;
-	case HCLGE_MAC_SPEED_200G:
-		hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M,
-				HCLGE_CFG_SPEED_S, HCLGE_FW_MAC_SPEED_200G);
-		break;
-	default:
+	ret = hclge_convert_to_fw_speed(speed, &speed_fw);
+	if (ret) {
 		dev_err(&hdev->pdev->dev, "invalid speed (%d)\n", speed);
-		return -EINVAL;
+		return ret;
 	}
 
+	hnae3_set_field(req->speed_dup, HCLGE_CFG_SPEED_M, HCLGE_CFG_SPEED_S,
+			speed_fw);
 	hnae3_set_bit(req->mac_change_fec_en, HCLGE_CFG_MAC_SPEED_CHANGE_EN_B,
 		      1);
 
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 42ce1eee33c4..a51418fdbb24 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -1095,6 +1095,11 @@ struct hclge_speed_bit_map {
 	u32 speed_bit;
 };
 
+struct hclge_mac_speed_map {
+	u32 speed_drv; /* speed defined in driver */
+	u32 speed_fw; /* speed defined in firmware */
+};
+
 int hclge_set_vport_promisc_mode(struct hclge_vport *vport, bool en_uc_pmc,
 				 bool en_mc_pmc, bool en_bc_pmc);
 int hclge_add_uc_addr_common(struct hclge_vport *vport,
-- 
2.33.0

[PATCH net-next 06/10] net: hns3: add new function hclge_tm_schd_mode_tc_base_cfg()

[Guangbin Huang]

This patch encapsulates the process code of tc based schedule mode of
function hclge_tm_lvl34_schd_mode_cfg() into a new function
hclge_tm_schd_mode_tc_base_cfg(). It make code more concise and the new
process code can be reused.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 33 +++++++++++++------
 1 file changed, 23 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 429652a8cde1..1afd305ebd36 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -1274,6 +1274,27 @@ static int hclge_tm_lvl2_schd_mode_cfg(struct hclge_dev *hdev)
 	return 0;
 }
 
+static int hclge_tm_schd_mode_tc_base_cfg(struct hclge_dev *hdev, u8 pri_id)
+{
+	struct hclge_vport *vport = hdev->vport;
+	int ret;
+	u16 i;
+
+	ret = hclge_tm_pri_schd_mode_cfg(hdev, pri_id);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < hdev->num_alloc_vport; i++) {
+		ret = hclge_tm_qs_schd_mode_cfg(hdev,
+						vport[i].qs_offset + pri_id,
+						HCLGE_SCH_MODE_DWRR);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 static int hclge_tm_schd_mode_vnet_base_cfg(struct hclge_vport *vport)
 {
 	struct hnae3_knic_private_info *kinfo = &vport->nic.kinfo;
@@ -1304,21 +1325,13 @@ static int hclge_tm_lvl34_schd_mode_cfg(struct hclge_dev *hdev)
 {
 	struct hclge_vport *vport = hdev->vport;
 	int ret;
-	u8 i, k;
+	u8 i;
 
 	if (hdev->tx_sch_mode == HCLGE_FLAG_TC_BASE_SCH_MODE) {
 		for (i = 0; i < hdev->tm_info.num_tc; i++) {
-			ret = hclge_tm_pri_schd_mode_cfg(hdev, i);
+			ret = hclge_tm_schd_mode_tc_base_cfg(hdev, i);
 			if (ret)
 				return ret;
-
-			for (k = 0; k < hdev->num_alloc_vport; k++) {
-				ret = hclge_tm_qs_schd_mode_cfg(
-					hdev, vport[k].qs_offset + i,
-					HCLGE_SCH_MODE_DWRR);
-				if (ret)
-					return ret;
-			}
 		}
 	} else {
 		for (i = 0; i < hdev->num_alloc_vport; i++) {
-- 
2.33.0

[PATCH net-next 07/10] net: hns3: refine function hclge_tm_pri_q_qs_cfg()

[Guangbin Huang]

This patch encapsulates the process code for queue to qset config of two
mode(tc based and vnet based) into two function, for making code more
concise.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 75 ++++++++++++-------
 1 file changed, 50 insertions(+), 25 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 1afd305ebd36..3edbfc8d17e8 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -916,38 +916,63 @@ static int hclge_vport_q_to_qs_map(struct hclge_dev *hdev,
 	return 0;
 }
 
-static int hclge_tm_pri_q_qs_cfg(struct hclge_dev *hdev)
+static int hclge_tm_pri_q_qs_cfg_tc_base(struct hclge_dev *hdev)
 {
 	struct hclge_vport *vport = hdev->vport;
+	u16 i, k;
 	int ret;
-	u32 i, k;
 
-	if (hdev->tx_sch_mode == HCLGE_FLAG_TC_BASE_SCH_MODE) {
-		/* Cfg qs -> pri mapping, one by one mapping */
-		for (k = 0; k < hdev->num_alloc_vport; k++) {
-			struct hnae3_knic_private_info *kinfo =
-				&vport[k].nic.kinfo;
-
-			for (i = 0; i < kinfo->tc_info.num_tc; i++) {
-				ret = hclge_tm_qs_to_pri_map_cfg(
-					hdev, vport[k].qs_offset + i, i);
-				if (ret)
-					return ret;
-			}
+	/* Cfg qs -> pri mapping, one by one mapping */
+	for (k = 0; k < hdev->num_alloc_vport; k++) {
+		struct hnae3_knic_private_info *kinfo = &vport[k].nic.kinfo;
+
+		for (i = 0; i < kinfo->tc_info.num_tc; i++) {
+			ret = hclge_tm_qs_to_pri_map_cfg(hdev,
+							 vport[k].qs_offset + i,
+							 i);
+			if (ret)
+				return ret;
 		}
-	} else if (hdev->tx_sch_mode == HCLGE_FLAG_VNET_BASE_SCH_MODE) {
-		/* Cfg qs -> pri mapping,  qs = tc, pri = vf, 8 qs -> 1 pri */
-		for (k = 0; k < hdev->num_alloc_vport; k++)
-			for (i = 0; i < HNAE3_MAX_TC; i++) {
-				ret = hclge_tm_qs_to_pri_map_cfg(
-					hdev, vport[k].qs_offset + i, k);
-				if (ret)
-					return ret;
-			}
-	} else {
-		return -EINVAL;
 	}
 
+	return 0;
+}
+
+static int hclge_tm_pri_q_qs_cfg_vnet_base(struct hclge_dev *hdev)
+{
+	struct hclge_vport *vport = hdev->vport;
+	u16 i, k;
+	int ret;
+
+	/* Cfg qs -> pri mapping,  qs = tc, pri = vf, 8 qs -> 1 pri */
+	for (k = 0; k < hdev->num_alloc_vport; k++)
+		for (i = 0; i < HNAE3_MAX_TC; i++) {
+			ret = hclge_tm_qs_to_pri_map_cfg(hdev,
+							 vport[k].qs_offset + i,
+							 k);
+			if (ret)
+				return ret;
+		}
+
+	return 0;
+}
+
+static int hclge_tm_pri_q_qs_cfg(struct hclge_dev *hdev)
+{
+	struct hclge_vport *vport = hdev->vport;
+	int ret;
+	u32 i;
+
+	if (hdev->tx_sch_mode == HCLGE_FLAG_TC_BASE_SCH_MODE)
+		ret = hclge_tm_pri_q_qs_cfg_tc_base(hdev);
+	else if (hdev->tx_sch_mode == HCLGE_FLAG_VNET_BASE_SCH_MODE)
+		ret = hclge_tm_pri_q_qs_cfg_vnet_base(hdev);
+	else
+		return -EINVAL;
+
+	if (ret)
+		return ret;
+
 	/* Cfg q -> qs mapping */
 	for (i = 0; i < hdev->num_alloc_vport; i++) {
 		ret = hclge_vport_q_to_qs_map(hdev, vport);
-- 
2.33.0

[PATCH net-next 08/10] net: hns3: split function hns3_nic_get_stats64()

[Guangbin Huang]

From: Yufeng Mo <moyufeng@huawei.com>

Function hns3_nic_get_stats64() is a bit too long. So add a
new function hns3_fetch_stats() to simplify code and improve
code readability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 123 +++++++++---------
 1 file changed, 61 insertions(+), 62 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index cc962e5f563b..fe1f5ead1be4 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2383,90 +2383,89 @@ static netdev_features_t hns3_features_check(struct sk_buff *skb,
 	return features;
 }
 
+static void hns3_fetch_stats(struct rtnl_link_stats64 *stats,
+			     struct hns3_enet_ring *ring, bool is_tx)
+{
+	unsigned int start;
+
+	do {
+		start = u64_stats_fetch_begin_irq(&ring->syncp);
+		if (is_tx) {
+			stats->tx_bytes += ring->stats.tx_bytes;
+			stats->tx_packets += ring->stats.tx_pkts;
+			stats->tx_dropped += ring->stats.sw_err_cnt;
+			stats->tx_dropped += ring->stats.tx_vlan_err;
+			stats->tx_dropped += ring->stats.tx_l4_proto_err;
+			stats->tx_dropped += ring->stats.tx_l2l3l4_err;
+			stats->tx_dropped += ring->stats.tx_tso_err;
+			stats->tx_dropped += ring->stats.over_max_recursion;
+			stats->tx_dropped += ring->stats.hw_limitation;
+			stats->tx_dropped += ring->stats.copy_bits_err;
+			stats->tx_dropped += ring->stats.skb2sgl_err;
+			stats->tx_dropped += ring->stats.map_sg_err;
+			stats->tx_errors += ring->stats.sw_err_cnt;
+			stats->tx_errors += ring->stats.tx_vlan_err;
+			stats->tx_errors += ring->stats.tx_l4_proto_err;
+			stats->tx_errors += ring->stats.tx_l2l3l4_err;
+			stats->tx_errors += ring->stats.tx_tso_err;
+			stats->tx_errors += ring->stats.over_max_recursion;
+			stats->tx_errors += ring->stats.hw_limitation;
+			stats->tx_errors += ring->stats.copy_bits_err;
+			stats->tx_errors += ring->stats.skb2sgl_err;
+			stats->tx_errors += ring->stats.map_sg_err;
+		} else {
+			stats->rx_bytes += ring->stats.rx_bytes;
+			stats->rx_packets += ring->stats.rx_pkts;
+			stats->rx_dropped += ring->stats.l2_err;
+			stats->rx_errors += ring->stats.l2_err;
+			stats->rx_errors += ring->stats.l3l4_csum_err;
+			stats->rx_crc_errors += ring->stats.l2_err;
+			stats->multicast += ring->stats.rx_multicast;
+			stats->rx_length_errors += ring->stats.err_pkt_len;
+		}
+	} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+}
+
 static void hns3_nic_get_stats64(struct net_device *netdev,
 				 struct rtnl_link_stats64 *stats)
 {
 	struct hns3_nic_priv *priv = netdev_priv(netdev);
 	int queue_num = priv->ae_handle->kinfo.num_tqps;
 	struct hnae3_handle *handle = priv->ae_handle;
+	struct rtnl_link_stats64 ring_total_stats;
 	struct hns3_enet_ring *ring;
-	u64 rx_length_errors = 0;
-	u64 rx_crc_errors = 0;
-	u64 rx_multicast = 0;
-	unsigned int start;
-	u64 tx_errors = 0;
-	u64 rx_errors = 0;
 	unsigned int idx;
-	u64 tx_bytes = 0;
-	u64 rx_bytes = 0;
-	u64 tx_pkts = 0;
-	u64 rx_pkts = 0;
-	u64 tx_drop = 0;
-	u64 rx_drop = 0;
 
 	if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state))
 		return;
 
 	handle->ae_algo->ops->update_stats(handle, &netdev->stats);
 
+	memset(&ring_total_stats, 0, sizeof(ring_total_stats));
 	for (idx = 0; idx < queue_num; idx++) {
 		/* fetch the tx stats */
 		ring = &priv->ring[idx];
-		do {
-			start = u64_stats_fetch_begin_irq(&ring->syncp);
-			tx_bytes += ring->stats.tx_bytes;
-			tx_pkts += ring->stats.tx_pkts;
-			tx_drop += ring->stats.sw_err_cnt;
-			tx_drop += ring->stats.tx_vlan_err;
-			tx_drop += ring->stats.tx_l4_proto_err;
-			tx_drop += ring->stats.tx_l2l3l4_err;
-			tx_drop += ring->stats.tx_tso_err;
-			tx_drop += ring->stats.over_max_recursion;
-			tx_drop += ring->stats.hw_limitation;
-			tx_drop += ring->stats.copy_bits_err;
-			tx_drop += ring->stats.skb2sgl_err;
-			tx_drop += ring->stats.map_sg_err;
-			tx_errors += ring->stats.sw_err_cnt;
-			tx_errors += ring->stats.tx_vlan_err;
-			tx_errors += ring->stats.tx_l4_proto_err;
-			tx_errors += ring->stats.tx_l2l3l4_err;
-			tx_errors += ring->stats.tx_tso_err;
-			tx_errors += ring->stats.over_max_recursion;
-			tx_errors += ring->stats.hw_limitation;
-			tx_errors += ring->stats.copy_bits_err;
-			tx_errors += ring->stats.skb2sgl_err;
-			tx_errors += ring->stats.map_sg_err;
-		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+		hns3_fetch_stats(&ring_total_stats, ring, true);
 
 		/* fetch the rx stats */
 		ring = &priv->ring[idx + queue_num];
-		do {
-			start = u64_stats_fetch_begin_irq(&ring->syncp);
-			rx_bytes += ring->stats.rx_bytes;
-			rx_pkts += ring->stats.rx_pkts;
-			rx_drop += ring->stats.l2_err;
-			rx_errors += ring->stats.l2_err;
-			rx_errors += ring->stats.l3l4_csum_err;
-			rx_crc_errors += ring->stats.l2_err;
-			rx_multicast += ring->stats.rx_multicast;
-			rx_length_errors += ring->stats.err_pkt_len;
-		} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
-	}
-
-	stats->tx_bytes = tx_bytes;
-	stats->tx_packets = tx_pkts;
-	stats->rx_bytes = rx_bytes;
-	stats->rx_packets = rx_pkts;
-
-	stats->rx_errors = rx_errors;
-	stats->multicast = rx_multicast;
-	stats->rx_length_errors = rx_length_errors;
-	stats->rx_crc_errors = rx_crc_errors;
+		hns3_fetch_stats(&ring_total_stats, ring, false);
+	}
+
+	stats->tx_bytes = ring_total_stats.tx_bytes;
+	stats->tx_packets = ring_total_stats.tx_packets;
+	stats->rx_bytes = ring_total_stats.rx_bytes;
+	stats->rx_packets = ring_total_stats.rx_packets;
+
+	stats->rx_errors = ring_total_stats.rx_errors;
+	stats->multicast = ring_total_stats.multicast;
+	stats->rx_length_errors = ring_total_stats.rx_length_errors;
+	stats->rx_crc_errors = ring_total_stats.rx_crc_errors;
 	stats->rx_missed_errors = netdev->stats.rx_missed_errors;
 
-	stats->tx_errors = tx_errors;
-	stats->rx_dropped = rx_drop;
-	stats->tx_dropped = tx_drop;
+	stats->tx_errors = ring_total_stats.tx_errors;
+	stats->rx_dropped = ring_total_stats.rx_dropped;
+	stats->tx_dropped = ring_total_stats.tx_dropped;
 	stats->collisions = netdev->stats.collisions;
 	stats->rx_over_errors = netdev->stats.rx_over_errors;
 	stats->rx_frame_errors = netdev->stats.rx_frame_errors;
-- 
2.33.0

[PATCH net-next 09/10] net: hns3: split function hns3_handle_bdinfo()

[Guangbin Huang]

From: Yufeng Mo <moyufeng@huawei.com>

Function hns3_handle_bdinfo() is a bit too long. So add two
new functions hns3_handle_rx_ts_info() and hns3_handle_rx_vlan_tag(
to simplify code and improve code readability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 54 ++++++++++++-------
 1 file changed, 35 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index fe1f5ead1be4..5fc8f9dc6e3e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4043,6 +4043,39 @@ static void hns3_set_rx_skb_rss_type(struct hns3_enet_ring *ring,
 	skb_set_hash(skb, rss_hash, rss_type);
 }
 
+static void hns3_handle_rx_ts_info(struct net_device *netdev,
+				   struct hns3_desc *desc, struct sk_buff *skb,
+				   u32 bd_base_info)
+{
+	if (unlikely(bd_base_info & BIT(HNS3_RXD_TS_VLD_B))) {
+		struct hnae3_handle *h = hns3_get_handle(netdev);
+		u32 nsec = le32_to_cpu(desc->ts_nsec);
+		u32 sec = le32_to_cpu(desc->ts_sec);
+
+		if (h->ae_algo->ops->get_rx_hwts)
+			h->ae_algo->ops->get_rx_hwts(h, skb, nsec, sec);
+	}
+}
+
+static void hns3_handle_rx_vlan_tag(struct hns3_enet_ring *ring,
+				    struct hns3_desc *desc, struct sk_buff *skb,
+				    u32 l234info)
+{
+	struct net_device *netdev = ring_to_netdev(ring);
+
+	/* Based on hw strategy, the tag offloaded will be stored at
+	 * ot_vlan_tag in two layer tag case, and stored at vlan_tag
+	 * in one layer tag case.
+	 */
+	if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
+		u16 vlan_tag;
+
+		if (hns3_parse_vlan_tag(ring, desc, l234info, &vlan_tag))
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+					       vlan_tag);
+	}
+}
+
 static int hns3_handle_bdinfo(struct hns3_enet_ring *ring, struct sk_buff *skb)
 {
 	struct net_device *netdev = ring_to_netdev(ring);
@@ -4065,26 +4098,9 @@ static int hns3_handle_bdinfo(struct hns3_enet_ring *ring, struct sk_buff *skb)
 	ol_info = le32_to_cpu(desc->rx.ol_info);
 	csum = le16_to_cpu(desc->csum);
 
-	if (unlikely(bd_base_info & BIT(HNS3_RXD_TS_VLD_B))) {
-		struct hnae3_handle *h = hns3_get_handle(netdev);
-		u32 nsec = le32_to_cpu(desc->ts_nsec);
-		u32 sec = le32_to_cpu(desc->ts_sec);
-
-		if (h->ae_algo->ops->get_rx_hwts)
-			h->ae_algo->ops->get_rx_hwts(h, skb, nsec, sec);
-	}
+	hns3_handle_rx_ts_info(netdev, desc, skb, bd_base_info);
 
-	/* Based on hw strategy, the tag offloaded will be stored at
-	 * ot_vlan_tag in two layer tag case, and stored at vlan_tag
-	 * in one layer tag case.
-	 */
-	if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
-		u16 vlan_tag;
-
-		if (hns3_parse_vlan_tag(ring, desc, l234info, &vlan_tag))
-			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
-					       vlan_tag);
-	}
+	hns3_handle_rx_vlan_tag(ring, desc, skb, l234info);
 
 	if (unlikely(!desc->rx.pkt_len || (l234info & (BIT(HNS3_RXD_TRUNCAT_B) |
 				  BIT(HNS3_RXD_L2E_B))))) {
-- 
2.33.0

[PATCH net-next 10/10] net: hns3: split function hns3_set_l2l3l4()

[Guangbin Huang]

From: Yufeng Mo <moyufeng@huawei.com>

Function hns3_set_l2l3l4() is a bit too long. So add two
new functions hns3_set_l3_type() and hns3_set_l4_csum_length()
to simplify code and improve code readability.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 .../net/ethernet/hisilicon/hns3/hns3_enet.c   | 102 ++++++++++--------
 1 file changed, 57 insertions(+), 45 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 5fc8f9dc6e3e..8c7707263f9d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1355,44 +1355,9 @@ static void hns3_set_outer_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
 			       HNS3_TUN_NVGRE);
 }
 
-static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
-			   u8 il4_proto, u32 *type_cs_vlan_tso,
-			   u32 *ol_type_vlan_len_msec)
+static void hns3_set_l3_type(struct sk_buff *skb, union l3_hdr_info l3,
+			     u32 *type_cs_vlan_tso)
 {
-	unsigned char *l2_hdr = skb->data;
-	u32 l4_proto = ol4_proto;
-	union l4_hdr_info l4;
-	union l3_hdr_info l3;
-	u32 l2_len, l3_len;
-
-	l4.hdr = skb_transport_header(skb);
-	l3.hdr = skb_network_header(skb);
-
-	/* handle encapsulation skb */
-	if (skb->encapsulation) {
-		/* If this is a not UDP/GRE encapsulation skb */
-		if (!(ol4_proto == IPPROTO_UDP || ol4_proto == IPPROTO_GRE)) {
-			/* drop the skb tunnel packet if hardware don't support,
-			 * because hardware can't calculate csum when TSO.
-			 */
-			if (skb_is_gso(skb))
-				return -EDOM;
-
-			/* the stack computes the IP header already,
-			 * driver calculate l4 checksum when not TSO.
-			 */
-			return skb_checksum_help(skb);
-		}
-
-		hns3_set_outer_l2l3l4(skb, ol4_proto, ol_type_vlan_len_msec);
-
-		/* switch to inner header */
-		l2_hdr = skb_inner_mac_header(skb);
-		l3.hdr = skb_inner_network_header(skb);
-		l4.hdr = skb_inner_transport_header(skb);
-		l4_proto = il4_proto;
-	}
-
 	if (l3.v4->version == 4) {
 		hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_S,
 			       HNS3_L3T_IPV4);
@@ -1406,15 +1371,11 @@ static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
 		hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3T_S,
 			       HNS3_L3T_IPV6);
 	}
+}
 
-	/* compute inner(/normal) L2 header size, defined in 2 Bytes */
-	l2_len = l3.hdr - l2_hdr;
-	hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_S, l2_len >> 1);
-
-	/* compute inner(/normal) L3 header size, defined in 4 Bytes */
-	l3_len = l4.hdr - l3.hdr;
-	hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_S, l3_len >> 2);
-
+static int hns3_set_l4_csum_length(struct sk_buff *skb, union l4_hdr_info l4,
+				   u32 l4_proto, u32 *type_cs_vlan_tso)
+{
 	/* compute inner(/normal) L4 header size, defined in 4 Bytes */
 	switch (l4_proto) {
 	case IPPROTO_TCP:
@@ -1460,6 +1421,57 @@ static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
 	return 0;
 }
 
+static int hns3_set_l2l3l4(struct sk_buff *skb, u8 ol4_proto,
+			   u8 il4_proto, u32 *type_cs_vlan_tso,
+			   u32 *ol_type_vlan_len_msec)
+{
+	unsigned char *l2_hdr = skb->data;
+	u32 l4_proto = ol4_proto;
+	union l4_hdr_info l4;
+	union l3_hdr_info l3;
+	u32 l2_len, l3_len;
+
+	l4.hdr = skb_transport_header(skb);
+	l3.hdr = skb_network_header(skb);
+
+	/* handle encapsulation skb */
+	if (skb->encapsulation) {
+		/* If this is a not UDP/GRE encapsulation skb */
+		if (!(ol4_proto == IPPROTO_UDP || ol4_proto == IPPROTO_GRE)) {
+			/* drop the skb tunnel packet if hardware don't support,
+			 * because hardware can't calculate csum when TSO.
+			 */
+			if (skb_is_gso(skb))
+				return -EDOM;
+
+			/* the stack computes the IP header already,
+			 * driver calculate l4 checksum when not TSO.
+			 */
+			return skb_checksum_help(skb);
+		}
+
+		hns3_set_outer_l2l3l4(skb, ol4_proto, ol_type_vlan_len_msec);
+
+		/* switch to inner header */
+		l2_hdr = skb_inner_mac_header(skb);
+		l3.hdr = skb_inner_network_header(skb);
+		l4.hdr = skb_inner_transport_header(skb);
+		l4_proto = il4_proto;
+	}
+
+	hns3_set_l3_type(skb, l3, type_cs_vlan_tso);
+
+	/* compute inner(/normal) L2 header size, defined in 2 Bytes */
+	l2_len = l3.hdr - l2_hdr;
+	hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L2LEN_S, l2_len >> 1);
+
+	/* compute inner(/normal) L3 header size, defined in 4 Bytes */
+	l3_len = l4.hdr - l3.hdr;
+	hns3_set_field(*type_cs_vlan_tso, HNS3_TXD_L3LEN_S, l3_len >> 2);
+
+	return hns3_set_l4_csum_length(skb, l4, l4_proto, type_cs_vlan_tso);
+}
+
 static int hns3_handle_vtags(struct hns3_enet_ring *tx_ring,
 			     struct sk_buff *skb)
 {
-- 
2.33.0

Re: [PATCH net-next 01/10] net: hns3: refactor reset_prepare_general retry statement

[Denis Kirjanov]

11/29/21 5:00 PM, Guangbin Huang пишет:
> From: Jiaran Zhang <zhangjiaran@huawei.com>
> 
> Currently, the hclge_reset_prepare_general function uses the goto
> statement to jump upwards, which increases code complexity and makes
> the program structure difficult to understand. In addition, if
> reset_pending is set, retry_cnt cannot be increased. This may result
> in a failure to exit the retry or increase the number of retries.
> 
> Use the while statement instead to make the program easier to understand
> and solve the problem that the goto statement cannot be exited.
> 
> Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
> ---
>   .../hisilicon/hns3/hns3pf/hclge_main.c        | 32 ++++++++-----------
>   .../hisilicon/hns3/hns3vf/hclgevf_main.c      | 32 ++++++++-----------
>   2 files changed, 28 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
> index a0628d139149..5282f2632b3b 100644
> --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
> @@ -11589,24 +11589,20 @@ static void hclge_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
>   	int retry_cnt = 0;
>   	int ret;
>   
> -retry:
> -	down(&hdev->reset_sem);
> -	set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
> -	hdev->reset_type = rst_type;
> -	ret = hclge_reset_prepare(hdev);
> -	if (ret || hdev->reset_pending) {
> -		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
> -			ret);
> -		if (hdev->reset_pending ||
> -		    retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
> -			dev_err(&hdev->pdev->dev,
> -				"reset_pending:0x%lx, retry_cnt:%d\n",
> -				hdev->reset_pending, retry_cnt);
> -			clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
> -			up(&hdev->reset_sem);
> -			msleep(HCLGE_RESET_RETRY_WAIT_MS);
> -			goto retry;
> -		}
> +	while (retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
> +		down(&hdev->reset_sem);
> +		set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
> +		hdev->reset_type = rst_type;
> +		ret = hclge_reset_prepare(hdev);
> +		if (!ret && !hdev->reset_pending)
> +			break;
up(&hdev->reset_sem); ?
> +
> +		dev_err(&hdev->pdev->dev,
> +			"failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
> +			ret, hdev->reset_pending, retry_cnt);
> +		clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
> +		up(&hdev->reset_sem);
> +		msleep(HCLGE_RESET_RETRY_WAIT_MS);
>   	}
>   
>   	/* disable misc vector before reset done */
> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
> index 3f29062eaf2e..0568cc31d391 100644
> --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
> @@ -2166,24 +2166,20 @@ static void hclgevf_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
>   	int retry_cnt = 0;
>   	int ret;
>   
> -retry:
> -	down(&hdev->reset_sem);
> -	set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
> -	hdev->reset_type = rst_type;
> -	ret = hclgevf_reset_prepare(hdev);
> -	if (ret) {
> -		dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
> -			ret);
> -		if (hdev->reset_pending ||
> -		    retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
> -			dev_err(&hdev->pdev->dev,
> -				"reset_pending:0x%lx, retry_cnt:%d\n",
> -				hdev->reset_pending, retry_cnt);
> -			clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
> -			up(&hdev->reset_sem);
> -			msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
> -			goto retry;
> -		}
> +	while (retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
> +		down(&hdev->reset_sem);
> +		set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
> +		hdev->reset_type = rst_type;
> +		ret = hclgevf_reset_prepare(hdev);
> +		if (!ret && !hdev->reset_pending)
> +			break;
same here
> +
> +		dev_err(&hdev->pdev->dev,
> +			"failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
> +			ret, hdev->reset_pending, retry_cnt);
> +		clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
> +		up(&hdev->reset_sem);
> +		msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
>   	}
>   
>   	/* disable misc vector before reset done */
> 

Re: [PATCH net-next 00/10] net: hns3: some cleanups for -next

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by David S. Miller <davem@davemloft.net>:

On Mon, 29 Nov 2021 22:00:17 +0800 you wrote:
> To improve code readability and simplicity, this series refactor some
> functions in the HNS3 ethernet driver.
> 
> Guangbin Huang (3):
>   net: hns3: refine function hclge_cfg_mac_speed_dup_hw()
>   net: hns3: add new function hclge_tm_schd_mode_tc_base_cfg()
>   net: hns3: refine function hclge_tm_pri_q_qs_cfg()
> 
> [...]

Here is the summary with links:
  - [net-next,01/10] net: hns3: refactor reset_prepare_general retry statement
    https://git.kernel.org/netdev/net-next/c/ed0e658c51aa
  - [net-next,02/10] net: hns3: refactor hns3_nic_reuse_page()
    https://git.kernel.org/netdev/net-next/c/e74a726da2c4
  - [net-next,03/10] net: hns3: refactor two hns3 debugfs functions
    https://git.kernel.org/netdev/net-next/c/e6fe5e167185
  - [net-next,04/10] net: hns3: split function hns3_get_tx_timeo_queue_info()
    https://git.kernel.org/netdev/net-next/c/a4ae2bc0abd4
  - [net-next,05/10] net: hns3: refine function hclge_cfg_mac_speed_dup_hw()
    https://git.kernel.org/netdev/net-next/c/e46da6a3d4d3
  - [net-next,06/10] net: hns3: add new function hclge_tm_schd_mode_tc_base_cfg()
    https://git.kernel.org/netdev/net-next/c/7ca561be11d0
  - [net-next,07/10] net: hns3: refine function hclge_tm_pri_q_qs_cfg()
    https://git.kernel.org/netdev/net-next/c/e06dac5290b7
  - [net-next,08/10] net: hns3: split function hns3_nic_get_stats64()
    https://git.kernel.org/netdev/net-next/c/8469b645c9a1
  - [net-next,09/10] net: hns3: split function hns3_handle_bdinfo()
    https://git.kernel.org/netdev/net-next/c/2fbf6a07f537
  - [net-next,10/10] net: hns3: split function hns3_set_l2l3l4()
    https://git.kernel.org/netdev/net-next/c/1d851c0905f8

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: [PATCH net-next 01/10] net: hns3: refactor reset_prepare_general retry statement

[huangguangbin (A)]

On 2021/11/29 22:27, Denis Kirjanov wrote:
> 
> 
> 11/29/21 5:00 PM, Guangbin Huang пишет:
>> From: Jiaran Zhang <zhangjiaran@huawei.com>
>>
>> Currently, the hclge_reset_prepare_general function uses the goto
>> statement to jump upwards, which increases code complexity and makes
>> the program structure difficult to understand. In addition, if
>> reset_pending is set, retry_cnt cannot be increased. This may result
>> in a failure to exit the retry or increase the number of retries.
>>
>> Use the while statement instead to make the program easier to understand
>> and solve the problem that the goto statement cannot be exited.
>>
>> Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
>> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
>> ---
>>   .../hisilicon/hns3/hns3pf/hclge_main.c        | 32 ++++++++-----------
>>   .../hisilicon/hns3/hns3vf/hclgevf_main.c      | 32 ++++++++-----------
>>   2 files changed, 28 insertions(+), 36 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
>> index a0628d139149..5282f2632b3b 100644
>> --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
>> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
>> @@ -11589,24 +11589,20 @@ static void hclge_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
>>       int retry_cnt = 0;
>>       int ret;
>> -retry:
>> -    down(&hdev->reset_sem);
>> -    set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
>> -    hdev->reset_type = rst_type;
>> -    ret = hclge_reset_prepare(hdev);
>> -    if (ret || hdev->reset_pending) {
>> -        dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
>> -            ret);
>> -        if (hdev->reset_pending ||
>> -            retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
>> -            dev_err(&hdev->pdev->dev,
>> -                "reset_pending:0x%lx, retry_cnt:%d\n",
>> -                hdev->reset_pending, retry_cnt);
>> -            clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
>> -            up(&hdev->reset_sem);
>> -            msleep(HCLGE_RESET_RETRY_WAIT_MS);
>> -            goto retry;
>> -        }
>> +    while (retry_cnt++ < HCLGE_RESET_RETRY_CNT) {
>> +        down(&hdev->reset_sem);
>> +        set_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
>> +        hdev->reset_type = rst_type;
>> +        ret = hclge_reset_prepare(hdev);
>> +        if (!ret && !hdev->reset_pending)
>> +            break;
> up(&hdev->reset_sem); ?

This is reset preparation in PCIe FLR reset process, up(&hdev->reset_sem) will be called in hclge_reset_done().

>> +
>> +        dev_err(&hdev->pdev->dev,
>> +            "failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
>> +            ret, hdev->reset_pending, retry_cnt);
>> +        clear_bit(HCLGE_STATE_RST_HANDLING, &hdev->state);
>> +        up(&hdev->reset_sem);
>> +        msleep(HCLGE_RESET_RETRY_WAIT_MS);
>>       }
>>       /* disable misc vector before reset done */
>> diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
>> index 3f29062eaf2e..0568cc31d391 100644
>> --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
>> +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
>> @@ -2166,24 +2166,20 @@ static void hclgevf_reset_prepare_general(struct hnae3_ae_dev *ae_dev,
>>       int retry_cnt = 0;
>>       int ret;
>> -retry:
>> -    down(&hdev->reset_sem);
>> -    set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
>> -    hdev->reset_type = rst_type;
>> -    ret = hclgevf_reset_prepare(hdev);
>> -    if (ret) {
>> -        dev_err(&hdev->pdev->dev, "fail to prepare to reset, ret=%d\n",
>> -            ret);
>> -        if (hdev->reset_pending ||
>> -            retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
>> -            dev_err(&hdev->pdev->dev,
>> -                "reset_pending:0x%lx, retry_cnt:%d\n",
>> -                hdev->reset_pending, retry_cnt);
>> -            clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
>> -            up(&hdev->reset_sem);
>> -            msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
>> -            goto retry;
>> -        }
>> +    while (retry_cnt++ < HCLGEVF_RESET_RETRY_CNT) {
>> +        down(&hdev->reset_sem);
>> +        set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
>> +        hdev->reset_type = rst_type;
>> +        ret = hclgevf_reset_prepare(hdev);
>> +        if (!ret && !hdev->reset_pending)
>> +            break;
> same here

Same as above.

>> +
>> +        dev_err(&hdev->pdev->dev,
>> +            "failed to prepare to reset, ret=%d, reset_pending:0x%lx, retry_cnt:%d\n",
>> +            ret, hdev->reset_pending, retry_cnt);
>> +        clear_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
>> +        up(&hdev->reset_sem);
>> +        msleep(HCLGEVF_RESET_RETRY_WAIT_MS);
>>       }
>>       /* disable misc vector before reset done */
>>
> .