Merge branch 'hns3-next'

Huazhong Tan says: ==================== net: hns3: some code optimizations & cleanups & bugfixes This patch-set includes code optimizations, cleanups and bugfixes for the HNS3 ethernet controller driver. [patch 1/12 - 6/12] adds some code optimizations and bugfixes about RAS and MSI-X HW error. [patch 7/12] fixes a loading issue. [patch 8/12 - 11/12] adds some bugfixes. [patch 12/12] adds some cleanups, which does not change the logic of code. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jun 15, 2019 · 26e392c · 26e392c
2 parents cbbe9bd + ebaf190
commit 26e392c
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Showing 15 changed files with 476 additions and 308 deletions.
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c
@@ -26,7 +26,8 @@ static bool hnae3_client_match(enum hnae3_client_type client_type)
 }
 
 void hnae3_set_client_init_flag(struct hnae3_client *client,
-				struct hnae3_ae_dev *ae_dev, int inited)
+				struct hnae3_ae_dev *ae_dev,
+				unsigned int inited)
 {
 	if (!client || !ae_dev)
 		return;

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -214,6 +214,7 @@ struct hnae3_ae_dev {
 	struct list_head node;
 	u32 flag;
 	u8 override_pci_need_reset; /* fix to stop multiple reset happening */
+	unsigned long hw_err_reset_req;
 	enum hnae3_reset_type reset_type;
 	void *priv;
 };
@@ -459,6 +460,8 @@ struct hnae3_ae_ops {
 				  u16 vlan, u8 qos, __be16 proto);
 	int (*enable_hw_strip_rxvtag)(struct hnae3_handle *handle, bool enable);
 	void (*reset_event)(struct pci_dev *pdev, struct hnae3_handle *handle);
+	enum hnae3_reset_type (*get_reset_level)(struct hnae3_ae_dev *ae_dev,
+						 unsigned long *addr);
 	void (*set_default_reset_request)(struct hnae3_ae_dev *ae_dev,
 					  enum hnae3_reset_type rst_type);
 	void (*get_channels)(struct hnae3_handle *handle,
@@ -490,7 +493,7 @@ struct hnae3_ae_ops {
 	void (*enable_fd)(struct hnae3_handle *handle, bool enable);
 	int (*add_arfs_entry)(struct hnae3_handle *handle, u16 queue_id,
 			      u16 flow_id, struct flow_keys *fkeys);
-	int (*dbg_run_cmd)(struct hnae3_handle *handle, char *cmd_buf);
+	int (*dbg_run_cmd)(struct hnae3_handle *handle, const char *cmd_buf);
 	pci_ers_result_t (*handle_hw_ras_error)(struct hnae3_ae_dev *ae_dev);
 	bool (*get_hw_reset_stat)(struct hnae3_handle *handle);
 	bool (*ae_dev_resetting)(struct hnae3_handle *handle);
@@ -642,5 +645,6 @@ void hnae3_unregister_client(struct hnae3_client *client);
 int hnae3_register_client(struct hnae3_client *client);
 
 void hnae3_set_client_init_flag(struct hnae3_client *client,
-				struct hnae3_ae_dev *ae_dev, int inited);
+				struct hnae3_ae_dev *ae_dev,
+				unsigned int inited);
 #endif
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -11,7 +11,8 @@
 
 static struct dentry *hns3_dbgfs_root;
 
-static int hns3_dbg_queue_info(struct hnae3_handle *h, char *cmd_buf)
+static int hns3_dbg_queue_info(struct hnae3_handle *h,
+			       const char *cmd_buf)
 {
 	struct hns3_nic_priv *priv = h->priv;
 	struct hns3_nic_ring_data *ring_data;
@@ -155,7 +156,7 @@ static int hns3_dbg_queue_map(struct hnae3_handle *h)
 	return 0;
 }
 
-static int hns3_dbg_bd_info(struct hnae3_handle *h, char *cmd_buf)
+static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf)
 {
 	struct hns3_nic_priv *priv = h->priv;
 	struct hns3_nic_ring_data *ring_data;

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -29,7 +29,7 @@
 #define hns3_tx_bd_count(S)	DIV_ROUND_UP(S, HNS3_MAX_BD_SIZE)
 
 static void hns3_clear_all_ring(struct hnae3_handle *h);
-static void hns3_force_clear_all_rx_ring(struct hnae3_handle *h);
+static void hns3_force_clear_all_ring(struct hnae3_handle *h);
 static void hns3_remove_hw_addr(struct net_device *netdev);
 
 static const char hns3_driver_name[] = "hns3";
@@ -143,6 +143,7 @@ static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
 		if (ret) {
 			netdev_err(priv->netdev, "request irq(%d) fail\n",
 				   tqp_vectors->vector_irq);
+			hns3_nic_uninit_irq(priv);
 			return ret;
 		}
 
@@ -487,7 +488,12 @@ static void hns3_nic_net_down(struct net_device *netdev)
 	/* free irq resources */
 	hns3_nic_uninit_irq(priv);
 
-	hns3_clear_all_ring(priv->ae_handle);
+	/* delay ring buffer clearing to hns3_reset_notify_uninit_enet
+	 * during reset process, because driver may not be able
+	 * to disable the ring through firmware when downing the netdev.
+	 */
+	if (!hns3_nic_resetting(netdev))
+		hns3_clear_all_ring(priv->ae_handle);
 }
 
 static int hns3_nic_net_stop(struct net_device *netdev)
@@ -1005,7 +1011,8 @@ static int hns3_fill_desc_vtags(struct sk_buff *skb,
 }
 
 static int hns3_fill_desc(struct hns3_enet_ring *ring, void *priv,
-			  int size, int frag_end, enum hns_desc_type type)
+			  unsigned int size, int frag_end,
+			  enum hns_desc_type type)
 {
 	struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
 	struct hns3_desc *desc = &ring->desc[ring->next_to_use];
@@ -1509,12 +1516,12 @@ static void hns3_nic_get_stats64(struct net_device *netdev,
 static int hns3_setup_tc(struct net_device *netdev, void *type_data)
 {
 	struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
-	struct hnae3_handle *h = hns3_get_handle(netdev);
-	struct hnae3_knic_private_info *kinfo = &h->kinfo;
 	u8 *prio_tc = mqprio_qopt->qopt.prio_tc_map;
+	struct hnae3_knic_private_info *kinfo;
 	u8 tc = mqprio_qopt->qopt.num_tc;
 	u16 mode = mqprio_qopt->mode;
 	u8 hw = mqprio_qopt->qopt.hw;
+	struct hnae3_handle *h;
 
 	if (!((hw == TC_MQPRIO_HW_OFFLOAD_TCS &&
 	       mode == TC_MQPRIO_MODE_CHANNEL) || (!hw && tc == 0)))
@@ -1526,6 +1533,9 @@ static int hns3_setup_tc(struct net_device *netdev, void *type_data)
 	if (!netdev)
 		return -EINVAL;
 
+	h = hns3_get_handle(netdev);
+	kinfo = &h->kinfo;
+
 	return (kinfo->dcb_ops && kinfo->dcb_ops->setup_tc) ?
 		kinfo->dcb_ops->setup_tc(h, tc, prio_tc) : -EOPNOTSUPP;
 }
@@ -1930,17 +1940,22 @@ static pci_ers_result_t hns3_error_detected(struct pci_dev *pdev,
 static pci_ers_result_t hns3_slot_reset(struct pci_dev *pdev)
 {
 	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
+	const struct hnae3_ae_ops *ops = ae_dev->ops;
+	enum hnae3_reset_type reset_type;
 	struct device *dev = &pdev->dev;
 
-	dev_info(dev, "requesting reset due to PCI error\n");
-
 	if (!ae_dev || !ae_dev->ops)
 		return PCI_ERS_RESULT_NONE;
 
 	/* request the reset */
-	if (ae_dev->ops->reset_event) {
-		if (!ae_dev->override_pci_need_reset)
-			ae_dev->ops->reset_event(pdev, NULL);
+	if (ops->reset_event) {
+		if (!ae_dev->override_pci_need_reset) {
+			reset_type = ops->get_reset_level(ae_dev,
+						&ae_dev->hw_err_reset_req);
+			ops->set_default_reset_request(ae_dev, reset_type);
+			dev_info(dev, "requesting reset due to PCI error\n");
+			ops->reset_event(pdev, NULL);
+		}
 
 		return PCI_ERS_RESULT_RECOVERED;
 	}
@@ -3410,7 +3425,7 @@ static int hns3_nic_dealloc_vector_data(struct hns3_nic_priv *priv)
 }
 
 static int hns3_ring_get_cfg(struct hnae3_queue *q, struct hns3_nic_priv *priv,
-			     int ring_type)
+			     unsigned int ring_type)
 {
 	struct hns3_nic_ring_data *ring_data = priv->ring_data;
 	int queue_num = priv->ae_handle->kinfo.num_tqps;
@@ -3905,7 +3920,7 @@ static void hns3_client_uninit(struct hnae3_handle *handle, bool reset)
 
 	hns3_del_all_fd_rules(netdev, true);
 
-	hns3_force_clear_all_rx_ring(handle);
+	hns3_force_clear_all_ring(handle);
 
 	hns3_nic_uninit_vector_data(priv);
 
@@ -4074,14 +4089,17 @@ static void hns3_force_clear_rx_ring(struct hns3_enet_ring *ring)
 	}
 }
 
-static void hns3_force_clear_all_rx_ring(struct hnae3_handle *h)
+static void hns3_force_clear_all_ring(struct hnae3_handle *h)
 {
 	struct net_device *ndev = h->kinfo.netdev;
 	struct hns3_nic_priv *priv = netdev_priv(ndev);
 	struct hns3_enet_ring *ring;
 	u32 i;
 
 	for (i = 0; i < h->kinfo.num_tqps; i++) {
+		ring = priv->ring_data[i].ring;
+		hns3_clear_tx_ring(ring);
+
 		ring = priv->ring_data[i + h->kinfo.num_tqps].ring;
 		hns3_force_clear_rx_ring(ring);
 	}
@@ -4312,7 +4330,8 @@ static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
 		return 0;
 	}
 
-	hns3_force_clear_all_rx_ring(handle);
+	hns3_clear_all_ring(handle);
+	hns3_force_clear_all_ring(handle);
 
 	hns3_nic_uninit_vector_data(priv);
 

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -417,7 +417,7 @@ struct hns3_enet_ring {
 	 */
 	int next_to_clean;
 
-	int pull_len; /* head length for current packet */
+	u32 pull_len; /* head length for current packet */
 	u32 frag_num;
 	unsigned char *va; /* first buffer address for current packet */
 

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -250,11 +250,13 @@ static int hns3_lp_run_test(struct net_device *ndev, enum hnae3_loop mode)
 
 		skb_get(skb);
 		tx_ret = hns3_nic_net_xmit(skb, ndev);
-		if (tx_ret == NETDEV_TX_OK)
+		if (tx_ret == NETDEV_TX_OK) {
 			good_cnt++;
-		else
+		} else {
+			kfree_skb(skb);
 			netdev_err(ndev, "hns3_lb_run_test xmit failed: %d\n",
 				   tx_ret);
+		}
 	}
 	if (good_cnt != HNS3_NIC_LB_TEST_PKT_NUM) {
 		ret_val = HNS3_NIC_LB_TEST_TX_CNT_ERR;

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -61,8 +61,8 @@ static int hclge_dbg_cmd_send(struct hclge_dev *hdev,
 
 static void hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
 				      struct hclge_dbg_dfx_message *dfx_message,
-				      char *cmd_buf, int msg_num, int offset,
-				      enum hclge_opcode_type cmd)
+				      const char *cmd_buf, int msg_num,
+				      int offset, enum hclge_opcode_type cmd)
 {
 #define BD_DATA_NUM       6
 
@@ -111,7 +111,7 @@ static void hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
 	kfree(desc_src);
 }
 
-static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, char *cmd_buf)
+static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, const char *cmd_buf)
 {
 	struct device *dev = &hdev->pdev->dev;
 	struct hclge_dbg_bitmap_cmd *bitmap;
@@ -211,7 +211,7 @@ static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, char *cmd_buf)
 	dev_info(dev, "IGU_TX_PRI_MAP_TC_CFG: 0x%x\n", desc[0].data[5]);
 }
 
-static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, char *cmd_buf)
+static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, const char *cmd_buf)
 {
 	int msg_num;
 
@@ -541,7 +541,8 @@ static void hclge_dbg_dump_tm(struct hclge_dev *hdev)
 		cmd, ret);
 }
 
-static void hclge_dbg_dump_tm_map(struct hclge_dev *hdev, char *cmd_buf)
+static void hclge_dbg_dump_tm_map(struct hclge_dev *hdev,
+				  const char *cmd_buf)
 {
 	struct hclge_bp_to_qs_map_cmd *bp_to_qs_map_cmd;
 	struct hclge_nq_to_qs_link_cmd *nq_to_qs_map;
@@ -984,7 +985,8 @@ void hclge_dbg_get_m7_stats_info(struct hclge_dev *hdev)
  * @hdev: pointer to struct hclge_dev
  * @cmd_buf: string that contains offset and length
  */
-static void hclge_dbg_dump_ncl_config(struct hclge_dev *hdev, char *cmd_buf)
+static void hclge_dbg_dump_ncl_config(struct hclge_dev *hdev,
+				      const char *cmd_buf)
 {
 #define HCLGE_MAX_NCL_CONFIG_OFFSET	4096
 #define HCLGE_MAX_NCL_CONFIG_LENGTH	(20 + 24 * 4)
@@ -1063,7 +1065,7 @@ static void hclge_dbg_dump_mac_tnl_status(struct hclge_dev *hdev)
 	}
 }
 
-int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf)
+int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
 {
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;