[dpdk-dev] [PATCH] net/i40e: fix request queue fail in VF

[Ye Xiaolong]

On 07/18, Zhu, TaoX wrote:
>Hi, Xiaolong
>	I'm sorry, this is my first time submitting a patch.
>	Attachment picture is my patch content and I try to generate fixes with git fixline. But I modified the code location to 'Not Committed Yet'. Should I use nearby id cebe3d7b3d?
>	

Nope, the commit in the fixline should be the one that introduced the issue this
patch tries to solve.

Thanks,
Xiaolong

>Thanks,
>Zhutao	
>	
>
>
>-----Original Message-----
>From: Ye, Xiaolong 
>Sent: Thursday, July 18, 2019 9:09 PM
>To: Zhu, TaoX <taox.zhu at intel.com>
>Cc: Xing, Beilei <beilei.xing at intel.com>; Zhang, Qi Z <qi.z.zhang at intel.com>; dev at dpdk.org
>Subject: Re: [dpdk-dev] [PATCH] net/i40e: fix request queue fail in VF
>
>On 07/18, taox.zhu at intel.com wrote:
>>From: Zhu Tao <taox.zhu at intel.com>
>>
>>When the VF configuration is larger than the number of queues reserved 
>>by PF, VF sends the request queue command through admin queue. When PF 
>>received this command, it may reset the VF and send a notification 
>>before resetting. If this notification is read by the timed task alarm, 
>>Task request queue will lost notification. This patch Mark vf_reset, 
>>pend_msg flag just as task request queue has received notification in 
>>task alarm.
>
>Please add fixes tag and cc stable.
>
>
>Thanks,
>Xiaolong
>
>>
>>Signed-off-by: Zhu Tao <taox.zhu at intel.com>
>>---
>> drivers/net/i40e/i40e_ethdev_vf.c | 4 ++++
>> 1 file changed, 4 insertions(+)
>>
>>diff --git a/drivers/net/i40e/i40e_ethdev_vf.c 
>>b/drivers/net/i40e/i40e_ethdev_vf.c
>>index 5be32b069..86dfda1c0 100644
>>--- a/drivers/net/i40e/i40e_ethdev_vf.c
>>+++ b/drivers/net/i40e/i40e_ethdev_vf.c
>>@@ -1332,6 +1332,10 @@ i40evf_handle_pf_event(struct rte_eth_dev *dev, uint8_t *msg,
>> 		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_RESET_IMPENDING event");
>> 		_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
>> 					      NULL);
>>+		if (vf->vf_reset == false) {
>>+			vf->vf_reset = true;
>>+			vf->pend_msg |= PFMSG_RESET_IMPENDING;
>>+		}
>> 		break;
>> 	case VIRTCHNL_EVENT_LINK_CHANGE:
>> 		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_LINK_CHANGE event");
>>--
>>2.17.1
>>