On Mon, Apr 19, 2021 at 8:46 PM Kalesh A P
<[email protected]> wrote:
>
> From: Kalesh AP <[email protected]>
>
> Driver cancels the health check alarm only if error recovery is enabled
> in the FW. This can cause an issue. There is a small window where the
> driver receives the async event from fw and port close is invoked
> immediately. Driver clears BNXT_FLAG_RECOVERY_ENABLED flag when it gets
> the async event from FW. As a result, the health check alarm will not
> get canceled during port close and causes a segfault when the alarm tries
> to read Heartbeat register.
>
> Fix this by cancelling the health check alarm unconditionally during
> port stop.
>
> Fixes: 9d0cbaecc91a ("net/bnxt: support periodic FW health monitoring")
> Cc: [email protected]
>
> Signed-off-by: Kalesh AP <[email protected]>
> Reviewed-by: Somnath Kotur <[email protected]>
> Reviewed-by: Ajit Kumar Khaparde <[email protected]>
Patch applied to dpdk-next-net-brcm.
> ---
> drivers/net/bnxt/bnxt_ethdev.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
> index 9da817f..f5d2dc8 100644
> --- a/drivers/net/bnxt/bnxt_ethdev.c
> +++ b/drivers/net/bnxt/bnxt_ethdev.c
> @@ -4274,9 +4274,6 @@ void bnxt_schedule_fw_health_check(struct bnxt *bp)
>
> static void bnxt_cancel_fw_health_check(struct bnxt *bp)
> {
> - if (!bnxt_is_recovery_enabled(bp))
> - return;
> -
> rte_eal_alarm_cancel(bnxt_check_fw_health, (void *)bp);
> bp->flags &= ~BNXT_FLAG_FW_HEALTH_CHECK_SCHEDULED;
> }
> --
> 2.10.1
>
