Re: [dpdk-dev] [PATCH] net/bnxt: fix ring group free

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

[-- Attachment #1: Type: text/plain, Size: 1637 bytes --]

On Sun, Aug 29, 2021 at 8:37 PM Kalesh A P
<kalesh-anakkur.purayil@broadcom.com> wrote:
>
> From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
>
> Added an invalid fw_grp_id check inside bnxt_hwrm_ring_grp_free().
> This will prevent invalid fw_grp_id to be passed to the FW which can
> result in an error.
> This fixes the following failure in the "port stop" -> "port start"
> sequence:
>
> bnxt_hwrm_ring_grp_free(): error 2:0:00000000:0204
> bnxt_hwrm_ring_grp_free(): error 2:0:00000000:0204
>
> Fixes: 5803d86b87df ("net/bnxt: update ring group after ring stop start")
> Cc: stable@dpdk.org
>
> Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
> Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>
> Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Patch applied to dpdk-next-net-brcm.

> ---
>  drivers/net/bnxt/bnxt_hwrm.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
> index f29d574..d092fdc 100644
> --- a/drivers/net/bnxt/bnxt_hwrm.c
> +++ b/drivers/net/bnxt/bnxt_hwrm.c
> @@ -1888,6 +1888,9 @@ int bnxt_hwrm_ring_grp_free(struct bnxt *bp, unsigned int idx)
>         struct hwrm_ring_grp_free_input req = {.req_type = 0 };
>         struct hwrm_ring_grp_free_output *resp = bp->hwrm_cmd_resp_addr;
>
> +       if (bp->grp_info[idx].fw_grp_id == INVALID_HW_RING_ID)
> +               return 0;
> +
>         HWRM_PREP(&req, HWRM_RING_GRP_FREE, BNXT_USE_CHIMP_MB);
>
>         req.ring_group_id = rte_cpu_to_le_16(bp->grp_info[idx].fw_grp_id);
> --
> 2.10.1
>