linux-kernel - [Patch net-next 10/12] net: hns3: call roce's reset notify callback when resetting

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Date:   Wed, 7 Nov 2018 12:06:16 +0800
From:   Huazhong Tan <tanhuazhong@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <linuxarm@...wei.com>
Subject: [Patch net-next 10/12] net: hns3: call roce's reset notify callback when resetting

While doing resetting, roce should do its uninitailization part
before nic's, and do its initialization part after nic's.

Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
---
 .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c    | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 3c327f8..0c0327b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2315,6 +2315,34 @@ static int hclge_notify_client(struct hclge_dev *hdev,
 	return 0;
 }
 
+static int hclge_notify_roce_client(struct hclge_dev *hdev,
+				    enum hnae3_reset_notify_type type)
+{
+	struct hnae3_client *client = hdev->roce_client;
+	int ret = 0;
+	u16 i;
+
+	if (!client)
+		return 0;
+
+	if (!client->ops->reset_notify)
+		return -EOPNOTSUPP;
+
+	for (i = 0; i < hdev->num_vmdq_vport + 1; i++) {
+		struct hnae3_handle *handle = &hdev->vport[i].roce;
+
+		ret = client->ops->reset_notify(handle, type);
+		if (ret) {
+			dev_err(&hdev->pdev->dev,
+				"notify roce client failed %d(%d)",
+				type, ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
 static int hclge_reset_wait(struct hclge_dev *hdev)
 {
 #define HCLGE_RESET_WATI_MS	100
@@ -2501,6 +2529,7 @@ static void hclge_reset(struct hclge_dev *hdev)
 	hdev->reset_count++;
 	hdev->last_reset_time = jiffies;
 	/* perform reset of the stack & ae device for a client */
+	hclge_notify_roce_client(hdev, HNAE3_DOWN_CLIENT);
 	rtnl_lock();
 	hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
 	rtnl_unlock();
@@ -2508,6 +2537,7 @@ static void hclge_reset(struct hclge_dev *hdev)
 	hclge_reset_prepare_wait(hdev);
 
 	if (!hclge_reset_wait(hdev)) {
+		hclge_notify_roce_client(hdev, HNAE3_UNINIT_CLIENT);
 		rtnl_lock();
 		hclge_notify_client(hdev, HNAE3_UNINIT_CLIENT);
 		hclge_reset_ae_dev(hdev->ae_dev);
@@ -2524,6 +2554,9 @@ static void hclge_reset(struct hclge_dev *hdev)
 	hclge_notify_client(hdev, HNAE3_UP_CLIENT);
 	rtnl_unlock();
 	ae_dev->reset_type = HNAE3_NONE_RESET;
+
+	hclge_notify_roce_client(hdev, HNAE3_INIT_CLIENT);
+	hclge_notify_roce_client(hdev, HNAE3_UP_CLIENT);
 }
 
 static void hclge_reset_event(struct pci_dev *pdev, struct hnae3_handle *handle)
-- 
2.7.4