Re: [dpdk-dev] [EXT] Re: [PATCH v2 1/2] app/testpmd: fix tx vlan and qinq dependency

[Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>]

Hi Ferruh Yigit,

Sorry, missed to see your inline comment about the check in v1.

>> @@ tx_vlan_set(portid_t port_id, uint16_t vlan_id)
>>  	if (vlan_id_is_invalid(vlan_id))
>>  		return;
>>  
>> -	vlan_offload = rte_eth_dev_get_vlan_offload(port_id);
>> -	if (vlan_offload & ETH_VLAN_EXTEND_OFFLOAD) {
>> -		printf("Error, as QinQ has been enabled.\n");
>> -		return;
>> -	}

> Here I think intention is if QINQ is enabled 'tx_vlan_id' & 'tx_vlan_id_outer'
> should be set by tx_qinq_set() not 'tx_vlan_set', and check is for that.

> What do you think keeping same logic?
> But of course check should be if 'ports[port_id].dev_conf.txmode.offloads' has 'DEV_TX_OFFLOAD_QINQ_INSERT' instead of above check.

Since tx_vlan_set() and tx_qinq_set() are they themselves are resetting/setting those flags in 'ports[port_id].dev_conf.txmode.offloads', 
do you think having such a check before clearing and setting flags be consistent ?
Current behavior is to override last setting with new setting. All the settings could be completely disabled by cmdline "tx vlan reset"

--
Thanks
Nithin



-----Original Message-----
From: Ferruh Yigit <ferruh.yigit@intel.com> 
Sent: Thursday, March 21, 2019 10:41 PM
To: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>; Wenzhuo Lu <wenzhuo.lu@intel.com>; Jingjing Wu <jingjing.wu@intel.com>; Bernard Iremonger <bernard.iremonger@intel.com>
Cc: dev@dpdk.org; xiao.w.wang@intel.com
Subject: [EXT] Re: [dpdk-dev] [PATCH v2 1/2] app/testpmd: fix tx vlan and qinq dependency

External Email

----------------------------------------------------------------------
On 3/18/2019 9:56 AM, Nithin Kumar Dabilpuram wrote:
> Tx VLAN & QinQ insert enable need not depend on Rx VLAN offload 
> ETH_VLAN_EXTEND_OFFLOAD.
> 
> Fixes: 6a34f91690d0 ("app/testpmd: fix error message when setting Tx 
> VLAN")
> Cc: xiao.w.wang@intel.com
> 
> Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>

<...>

> @@ -2963,11 +2962,6 @@ tx_vlan_set(portid_t port_id, uint16_t vlan_id)
>  	if (vlan_id_is_invalid(vlan_id))
>  		return;
>  
> -	vlan_offload = rte_eth_dev_get_vlan_offload(port_id);
> -	if (vlan_offload & ETH_VLAN_EXTEND_OFFLOAD) {
> -		printf("Error, as QinQ has been enabled.\n");
> -		return;
> -	}

It looks like you didn't take account comment on this in previous version, can you please check it?