[dpdk-dev] [PATCH v3] net/hns3: fix parse link fails code fail
Ferruh Yigit
ferruh.yigit at intel.com
Tue Apr 27 14:45:08 CEST 2021
On 4/27/2021 1:17 PM, Min Hu (Connor) wrote:
> From: Chengwen Feng <fengchengwen at 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 at dpdk.org
>
> Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
> ---
> v3:
> * get the parameter as 'struct hns3_mbx_vf_to_pf_cmd' at first place.
>
> v2:
> * kept original API interface.
> ---
> drivers/net/hns3/hns3_mbx.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/hns3/hns3_mbx.c b/drivers/net/hns3/hns3_mbx.c
> index ba04ac9..31ab130 100644
> --- a/drivers/net/hns3/hns3_mbx.c
> +++ b/drivers/net/hns3/hns3_mbx.c
> @@ -347,7 +347,7 @@ 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)
> + struct hns3_mbx_vf_to_pf_cmd *req)
> {
> #define LINK_STATUS_OFFSET 1
> #define LINK_FAIL_CODE_OFFSET 2
> @@ -513,7 +513,14 @@ hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
> hns3_handle_asserting_reset(hw, req);
> break;
> case HNS3_MBX_PUSH_LINK_STATUS:
> - hns3pf_handle_link_change_event(hw, req);
> + /*
> + * This message is reported by the firmware and is
> + * reported in 'struct hns3_mbx_vf_to_pf_cmd' format.
> + * Therefore, we should cast the req variable to
> + * 'struct hns3_mbx_vf_to_pf_cmd' and then process it.
> + */
I am asking just to double check, the 'msg' type is different of
'hns3_mbx_pf_to_vf_cmd' & 'hns3_mbx_vf_to_pf_cmd', one is 'uint8_t', other is
'uint16_t', and 'msg' is used in the function 'hns3pf_handle_link_change_event()'.
Is the 'msg' usage still correct after this change?
> + hns3pf_handle_link_change_event(hw,
> + (struct hns3_mbx_vf_to_pf_cmd *)req);
Will it be more readable if 'desc->data' cast to "struct hns3_mbx_vf_to_pf_cmd
*" (instead of 'req')? Up to you, I can proceed with this one if you prefer.
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