net: hns3: refine the definition for struct hclge_pf_to_vf_msg

[ Upstream commit 6fde96df0447a29ab785de4fcb229e5543f0cbf7 ]

The struct hclge_pf_to_vf_msg is used for mailbox message from
PF to VF, including both response and request. But its definition
can only indicate respone, which makes the message data copy in
function hclge_send_mbx_msg() unreadable. So refine it by edding
a general message definition into it.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: ac92c0a9a060 ("net: hns3: add barrier in vf mailbox reply process")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
index c2bd2584201f87c509bf8469b92da3ba9a40dfde..c4603a70ed60b27bce6fd4114fdbca16074a1e07 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h
@@ -132,10 +132,19 @@ struct hclge_vf_to_pf_msg {
 
 struct hclge_pf_to_vf_msg {
        u16 code;
-       u16 vf_mbx_msg_code;
-       u16 vf_mbx_msg_subcode;
-       u16 resp_status;
-       u8 resp_data[HCLGE_MBX_MAX_RESP_DATA_SIZE];
+       union {
+               /* used for mbx response */
+               struct {
+                       u16 vf_mbx_msg_code;
+                       u16 vf_mbx_msg_subcode;
+                       u16 resp_status;
+                       u8 resp_data[HCLGE_MBX_MAX_RESP_DATA_SIZE];
+               };
+               /* used for general mbx */
+               struct {
+                       u8 msg_data[HCLGE_MBX_MAX_MSG_SIZE];
+               };
+       };
 };
 
 struct hclge_mbx_vf_to_pf_cmd {

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 4a5b11b6fed3f71c3fd95acf4d5a663ec95cfb5f..dac4ac425481c105dd757e809465ffa1ec7df8b4 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -108,7 +108,7 @@ static int hclge_send_mbx_msg(struct hclge_vport *vport, u8 *msg, u16 msg_len,
        resp_pf_to_vf->msg_len = msg_len;
        resp_pf_to_vf->msg.code = mbx_opcode;
 
-       memcpy(&resp_pf_to_vf->msg.vf_mbx_msg_code, msg, msg_len);
+       memcpy(resp_pf_to_vf->msg.msg_data, msg, msg_len);
 
        trace_hclge_pf_mbx_send(hdev, resp_pf_to_vf);