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path: root/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
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Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c')
-rw-r--r--drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
index a28618428338..b598c06af8e0 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
@@ -126,6 +126,13 @@ int hclgevf_send_mbx_msg(struct hclgevf_dev *hdev, u16 code, u16 subcode,
return status;
}
+static bool hclgevf_cmd_crq_empty(struct hclgevf_hw *hw)
+{
+ u32 tail = hclgevf_read_dev(hw, HCLGEVF_NIC_CRQ_TAIL_REG);
+
+ return tail == hw->cmq.crq.next_to_use;
+}
+
void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
{
struct hclgevf_mbx_resp_status *resp;
@@ -140,11 +147,22 @@ void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
resp = &hdev->mbx_resp;
crq = &hdev->hw.cmq.crq;
- flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
- while (hnae_get_bit(flag, HCLGEVF_CMDQ_RX_OUTVLD_B)) {
+ while (!hclgevf_cmd_crq_empty(&hdev->hw)) {
desc = &crq->desc[crq->next_to_use];
req = (struct hclge_mbx_pf_to_vf_cmd *)desc->data;
+ flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
+ if (unlikely(!hnae_get_bit(flag, HCLGEVF_CMDQ_RX_OUTVLD_B))) {
+ dev_warn(&hdev->pdev->dev,
+ "dropped invalid mailbox message, code = %d\n",
+ req->msg[0]);
+
+ /* dropping/not processing this invalid message */
+ crq->desc[crq->next_to_use].flag = 0;
+ hclge_mbx_ring_ptr_move_crq(crq);
+ continue;
+ }
+
/* synchronous messages are time critical and need preferential
* treatment. Therefore, we need to acknowledge all the sync
* responses as quickly as possible so that waiting tasks do not
@@ -205,7 +223,6 @@ void hclgevf_mbx_handler(struct hclgevf_dev *hdev)
}
crq->desc[crq->next_to_use].flag = 0;
hclge_mbx_ring_ptr_move_crq(crq);
- flag = le16_to_cpu(crq->desc[crq->next_to_use].flag);
}
/* Write back CMDQ_RQ header pointer, M7 need this pointer */