Re: [dpdk-dev] [Linuxarm] Re: [PATCH V3] ethdev: add queue state when retrieve queue information

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 4/16/2021 1:58 AM, oulijun wrote:
> 
> 
> 在 2021/4/15 20:45, Ferruh Yigit 写道:
>> On 4/15/2021 1:36 PM, Thomas Monjalon wrote:
>>> 15/04/2021 14:33, Ferruh Yigit:
>>>> On 4/15/2021 3:40 AM, Lijun Ou wrote:
>>>>> Currently, upper-layer application could get queue state only
>>>>> through pointers such as dev->data->tx_queue_state[queue_id],
>>>>> this is not the recommended way to access it. So this patch
>>>>> add get queue state when call rte_eth_rx_queue_info_get and
>>>>> rte_eth_tx_queue_info_get API.
>>>>>
>>>>> Note: After add queue_state field, the 'struct rte_eth_rxq_info' size
>>>>> remains 128B, and the 'struct rte_eth_txq_info' size remains 64B, so
>>>>> it could be ABI compatible.
>>>>>
>>>>> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
>>>>> Signed-off-by: Lijun Ou <oulijun@huawei.com>
>>>>
>>>> Looks good to me, but it is causing an ABI error as we already discussed before
>>>> as that is false positive.
>>>>
>>>>
>>>> Ray, David,
>>>>
>>>> Should we add any exception to libabigail.abignore for this?
>>>
>>> We do not tolerate any ABI warning.
>>> If we are sure the ABI change is false positive,
>>> it must be suppressed in libabigail.abignore in the same patch.
>>>
>>
>> A new field is added to public structs, but struct size or the location of the 
>> existing fields are not changing (struct is cache aligned).
>>
>> Can you please support how this can be added to 'libabigail.abignore'?
>>
>> Lijun can you please send a new version with 'libabigail.abignore' update?
>>
> Yes, I can do that. But at the moment I don't know how to update 
> libabigil.abinore. I don't know where to modify
> Is there any relevant documentation?

Please check Thomas' response, he already described what needs to be changed.

And for documentation David & Ray may know better.