net: hns3: provide some interface & information for the client

The client needs to know if the hardware is resetting when
loading or unloading itself, because client may abort the loading
process or wait for the reset process to finish when unloading
if hardware is resetting.

So this patch provides these interfaces to do it.
1. get_hw_reset_stat, the reset status of hardware.
2. ae_dev_resetting, whether reset task is scheduling.
3. ae_dev_reset_cnt, how many reset has been done.

Also, the RoCE client needs some field in the hnae3_roce_private_info
to save its state, and process_hw_error interface in the
hnae3_client_ops to process hardware errors.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 42982fc2b5d7..517204bbf0b7 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1165,6 +1165,7 @@ static int hclgevf_reset(struct hclgevf_dev *hdev)
 {
 	int ret;
 
+	hdev->reset_count++;
 	rtnl_lock();
 
 	/* bring down the nic to stop any ongoing TX/RX */
@@ -2185,6 +2186,27 @@ static void hclgevf_get_media_type(struct hnae3_handle *handle,
 		*media_type = hdev->hw.mac.media_type;
 }
 
+static bool hclgevf_get_hw_reset_stat(struct hnae3_handle *handle)
+{
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+
+	return !!hclgevf_read_dev(&hdev->hw, HCLGEVF_FUN_RST_ING);
+}
+
+static bool hclgevf_ae_dev_resetting(struct hnae3_handle *handle)
+{
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+
+	return test_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state);
+}
+
+static unsigned long hclgevf_ae_dev_reset_cnt(struct hnae3_handle *handle)
+{
+	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
+
+	return hdev->reset_count;
+}
+
 static const struct hnae3_ae_ops hclgevf_ops = {
 	.init_ae_dev = hclgevf_init_ae_dev,
 	.uninit_ae_dev = hclgevf_uninit_ae_dev,
@@ -2225,6 +2247,9 @@ static const struct hnae3_ae_ops hclgevf_ops = {
 	.get_status = hclgevf_get_status,
 	.get_ksettings_an_result = hclgevf_get_ksettings_an_result,
 	.get_media_type = hclgevf_get_media_type,
+	.get_hw_reset_stat = hclgevf_get_hw_reset_stat,
+	.ae_dev_resetting = hclgevf_ae_dev_resetting,
+	.ae_dev_reset_cnt = hclgevf_ae_dev_reset_cnt,
 };
 
 static struct hnae3_ae_algo ae_algovf = {
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
index 6b2fd5a0326f..ffb8c7768b88 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h
@@ -150,6 +150,7 @@ struct hclgevf_dev {
 #define HCLGEVF_RESET_REQUESTED		0
 #define HCLGEVF_RESET_PENDING		1
 	unsigned long reset_state;	/* requested, pending */
+	unsigned long reset_count;	/* the number of reset has been done */
 	u32 reset_attempts;
 
 	u32 fw_version;