Re: [dpdk-dev] [PATCH 3/4] net/hns3: fix parse link fails code fail

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 4/22/2021 2:55 AM, Min Hu (Connor) wrote:
> From: Chengwen Feng <fengchengwen@huawei.com>
> 
> The link fails code should be parsed using the structure
> hns3_mbx_vf_to_pf_cmd, else it will parse fail.
> 
> Fixes: 109e4dd1bd7a ("net/hns3: get link state change through mailbox")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
> ---
>  drivers/net/hns3/hns3_mbx.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/hns3/hns3_mbx.c b/drivers/net/hns3/hns3_mbx.c
> index ba04ac9..0550c9a 100644
> --- a/drivers/net/hns3/hns3_mbx.c
> +++ b/drivers/net/hns3/hns3_mbx.c
> @@ -346,12 +346,13 @@ hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
>  }
>  
>  static void
> -hns3pf_handle_link_change_event(struct hns3_hw *hw,
> -			      struct hns3_mbx_pf_to_vf_cmd *req)
> +hns3pf_handle_link_change_event(struct hns3_hw *hw, void *data)

Why not s/struct hns3_mbx_pf_to_vf_cmd/struct hns3_mbx_vf_to_pf_cmd/ but change
to parameter to "void *", wouldn't it reduce the type check?

>  {
>  #define LINK_STATUS_OFFSET     1
>  #define LINK_FAIL_CODE_OFFSET  2
>  
> +	struct hns3_mbx_vf_to_pf_cmd *req = data;
> +
>  	if (!req->msg[LINK_STATUS_OFFSET])
>  		hns3_link_fail_parse(hw, req->msg[LINK_FAIL_CODE_OFFSET]);
>  
>