The virtchnl command message response is handled by matching the opcode only for limitation. The DCF AdminQ command with buffer data needs two virtchnl commands, one is to handle the AdminQ header, the other is to handle AdminQ buffer. If the AdminQ header command gets the failure response, the AdminQ buffer command needs to wait for the buffer message response until timeout to drain out the virtchnl command queue, since both of them are sent to PF, the PF will handle them one by one, and send back the response. If not, it will cause the next AdminQ command failure with the stall response. Fixes: daa714d55c72 ("net/ice: handle AdminQ command by DCF") Cc: stable@dpdk.org Signed-off-by: Haiyue Wang <haiyue.wang@intel.com> --- v2: Fix the commit message typo : 'matchiing' should be 'matching' --- drivers/net/ice/ice_dcf.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c index 4a9af3292c..a211797d9e 100644 --- a/drivers/net/ice/ice_dcf.c +++ b/drivers/net/ice/ice_dcf.c @@ -506,7 +506,6 @@ 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)) break; -- 2.30.0
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(-) diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c index 4a9af3292c..d947d02c5b 100644 --- a/drivers/net/ice/ice_dcf.c +++ b/drivers/net/ice/ice_dcf.c @@ -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); -- 2.30.0
> -----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