[v3] net/ice: drain out DCF AdminQ command queue
Checks
Commit Message
The virtchnl message is handled one by one by checking opcode to match
the response for the request.
The DCF AdminQ command with buffer needs two virtchnl commands, one is
to handle the AdminQ descriptor, the other is to the handle AdminQ
buffer. If both of them are sent to PF successfully, it needs to wait
two responses from PF, even if the AdminQ descriptor command gets the
failure response. Since PF will handle them one by one, and send back
the response for each.
If not wait for the buffer message response until timeout to drain out
the virtchnl command queue, it will cause the next AdminQ command with
buffer to get the stall buffer response from previous.
Fixes: daa714d55c72 ("net/ice: handle AdminQ command by DCF")
Cc: stable@dpdk.org
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
---
v3: Reword the commit message, and remove the no needed checking.
v2: Fix the commit message typo : 'matchiing' should be 'matching'
---
drivers/net/ice/ice_dcf.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
Comments
> -----Original Message-----
> From: Wang, Haiyue <haiyue.wang@intel.com>
> Sent: Friday, January 22, 2021 1:32 AM
> To: dev@dpdk.org
> Cc: Yang, Qiming <qiming.yang@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Fu, Qi <qi.fu@intel.com>; Wang, Haiyue
> <haiyue.wang@intel.com>; stable@dpdk.org
> Subject: [PATCH v3] net/ice: drain out DCF AdminQ command queue
>
> The virtchnl message is handled one by one by checking opcode to match the
> response for the request.
>
> The DCF AdminQ command with buffer needs two virtchnl commands, one is to
> handle the AdminQ descriptor, the other is to the handle AdminQ buffer. If both
> of them are sent to PF successfully, it needs to wait two responses from PF,
> even if the AdminQ descriptor command gets the failure response. Since PF will
> handle them one by one, and send back the response for each.
>
> If not wait for the buffer message response until timeout to drain out the
> virtchnl command queue, it will cause the next AdminQ command with buffer to
> get the stall buffer response from previous.
>
> Fixes: daa714d55c72 ("net/ice: handle AdminQ command by DCF")
> Cc: stable@dpdk.org
>
> Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Applied to dpdk-next-net-intel.
Thanks
Qi
@@ -505,9 +505,7 @@ ice_dcf_send_aq_cmd(void *dcf_hw, struct ice_aq_desc *desc,
}
do {
- if ((!desc_cmd.pending && !buff_cmd.pending) ||
- (!desc_cmd.pending && desc_cmd.v_ret != IAVF_SUCCESS) ||
- (!buff_cmd.pending && buff_cmd.v_ret != IAVF_SUCCESS))
+ if (!desc_cmd.pending && !buff_cmd.pending)
break;
rte_delay_ms(ICE_DCF_ARQ_CHECK_TIME);