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Subject[PATCH V3 net-next 06/11] net: hns3: use a reserved byte to identify need_resp flag
Date
This patch uses a reserved byte in the hclge_mbx_vf_to_pf_cmd
to save the need_resp flag, so when PF received the mailbox,
it can use it to decise whether send a response to VF.

For hclge_set_vf_uc_mac_addr(), it should use mbx_need_resp flag
to decide whether send response to VF.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h | 5 ++++-
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 7 +++----
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c | 2 ++
3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
index 8b6191f..83e19c6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
@@ -84,12 +84,15 @@ struct hclgevf_mbx_resp_status {
struct hclge_mbx_vf_to_pf_cmd {
u8 rsv;
u8 mbx_src_vfid; /* Auto filled by IMP */
- u8 rsv1[2];
+ u8 mbx_need_resp;
+ u8 rsv1[1];
u8 msg_len;
u8 rsv2[3];
u8 msg[HCLGE_MBX_MAX_MSG_SIZE];
};

+#define HCLGE_MBX_NEED_RESP_BIT BIT(0)
+
struct hclge_mbx_pf_to_vf_cmd {
u8 dest_vfid;
u8 rsv[3];
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 24386bd..fe48c56 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -212,8 +212,7 @@ static int hclge_set_vf_promisc_mode(struct hclge_vport *vport,
}

static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport,
- struct hclge_mbx_vf_to_pf_cmd *mbx_req,
- bool gen_resp)
+ struct hclge_mbx_vf_to_pf_cmd *mbx_req)
{
const u8 *mac_addr = (const u8 *)(&mbx_req->msg[2]);
struct hclge_dev *hdev = vport->back;
@@ -249,7 +248,7 @@ static int hclge_set_vf_uc_mac_addr(struct hclge_vport *vport,
return -EIO;
}

- if (gen_resp)
+ if (mbx_req->mbx_need_resp & HCLGE_MBX_NEED_RESP_BIT)
hclge_gen_resp_to_vf(vport, mbx_req, status, NULL, 0);

return 0;
@@ -597,7 +596,7 @@ void hclge_mbx_handler(struct hclge_dev *hdev)
ret);
break;
case HCLGE_MBX_SET_UNICAST:
- ret = hclge_set_vf_uc_mac_addr(vport, req, true);
+ ret = hclge_set_vf_uc_mac_addr(vport, req);
if (ret)
dev_err(&hdev->pdev->dev,
"PF fail(%d) to set VF UC MAC Addr\n",
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
index 3c22639..30f2e93 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_mbx.c
@@ -98,6 +98,8 @@ int hclgevf_send_mbx_msg(struct hclgevf_dev *hdev, u16 code, u16 subcode,
}

hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_MBX_VF_TO_PF, false);
+ req->mbx_need_resp |= need_resp ? HCLGE_MBX_NEED_RESP_BIT :
+ ~HCLGE_MBX_NEED_RESP_BIT;
req->msg[0] = code;
req->msg[1] = subcode;
memcpy(&req->msg[2], msg_data, msg_len);
--
2.7.4
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