[dpdk-dev] [RFC] Add hot plug event in rte eal interrupt and inplement it in i40e driver.

[Wu, Jingjing]

> >
> >Secondly, in order to read out the uevent that monitoring, we need to add uevent API in rte
> layer. We plan add 2 , rte_uevent_connect and  rte_get_uevent. All driver interrupt handler
> could use these API to enable the uevent monitoring, and read out the uevent type , then
> corresponding to handle these uevent, such as detach the device when get the remove type.
> >
> 
> I find having a generic uevent API interesting.
> 
> However, all specifics pertaining to UIO use (hotplug_fd, subsystem
> enum) should stay in UIO specific code (eal_pci_uio.c?).
>
Yes, but it can be also considered as interrupt mechanism, right?

> I am currently moving the PCI bus out of the EAL. EAL subsystems should
> not rely on PCI specifics, as they won't be available afterward.

Will the interrupt handling be kept in EAL, right?

> It should also allow you to clean up your API. Exposing hotplug_fd and
> requiring PMDs to link it can be avoided and should result in a simpler
> API.
Didn't get the idea. Why it will result in a simpler API? Is there any patch help
Me to understand?

Thanks
Jingjing