[dpdk-dev] [PATCH 14/14] net/hns3: support LSC event report

Ferruh Yigit ferruh.yigit at intel.com
Tue Feb 2 13:06:45 CET 2021

On 1/29/2021 1:49 AM, oulijun wrote:
> 在 2021/1/29 7:41, Ferruh Yigit 写道:
>> On 1/22/2021 10:18 AM, Lijun Ou wrote:
>>> From: Chengwen Feng <fengchengwen at huawei.com>
>>> This patch support LSC(Link Status Change) event report.
>> There is a user config for lsc, 'dev->data->dev_conf.intr_conf.lsc', which 
>> seems not taken into account.
> Frist of all, thank you for your review. Currently, the old firmware doest not 
> support interrupt reporting. Therefore, the PF does not suport interrupt 
> reporting through the mailbox. Therefore, the PF obtains interrupts in polling 
> mode and then reports interrupts.
>> Also 'RTE_PCI_DRV_INTR_LSC' should be set in 'rte_pci_driver.drv_flags' to 
>> report this feature to higher levels.
> In the future, the new firmware + PF will support interrupt reporting. In that 
> case, the LSC capability of dev_flag will be set.
> In the future, we will enable the VF to support LSC. That is, we are developing 
> the PF to report LSC interrupts through the mailbox.
>> And when the feature is fully implemented, can you please add "Link status 
>> event" feature to 'hns3.ini'?
> By then, we'll add it in hns3.ini.

Got it, so for now only LSC event report (even callbacks call) support added, I 
am proceeding with the patch.

>>> Signed-off-by: Chengwen Feng <fengchengwen at huawei.com>
>>> Signed-off-by: Lijun Ou <oulijun at huawei.com>
>> <...>
>> .

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