[dpdk-stable] [dpdk-dev] [PATCH] net/iavf: fix queue start failed

[Zhang, Qi Z]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Qiming Chen
> Sent: Monday, September 13, 2021 11:40 AM
> To: dev at dpdk.org
> Cc: Xing, Beilei <beilei.xing at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>;
> Qiming Chen <chenqiming_huawei at 163.com>; stable at dpdk.org
> Subject: [dpdk-dev] [PATCH] net/iavf: fix queue start failed
> 
> In the iavf_dev_start function, if the first execution of iavf_start_queues fails, it
> will still fail when it is started again.
> The patch solves the problem of rolling back resources after the queue fails to
> start, and then restarts successfully.
> 
> Fixes: 69dd4c3d0898 ("net/avf: enable queue and device")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
> ---
>  drivers/net/iavf/iavf_ethdev.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
> index 6ed2dbbcbe..9eca4b70ee 100644
> --- a/drivers/net/iavf/iavf_ethdev.c
> +++ b/drivers/net/iavf/iavf_ethdev.c
> @@ -897,6 +897,7 @@ iavf_dev_start(struct rte_eth_dev *dev)
> 
>  err_mac:
>  	iavf_add_del_all_mac_addr(adapter, false);
> +	iavf_stop_queues(dev);

This looks like not a good place to fix the issue, if iavf_start_queues failed, it it better all the resource be cleanup inside the function?

>  err_queue:
>  	return -1;
>  }
> --
> 2.30.1.windows.1