[dpdk-dev] [RFC PATCH 1/3] librte_ethdev: support device recovery event

[Kalesh Anakkur Purayil]

Hi Thomas,

On Wed, Mar 11, 2020 at 6:50 PM Thomas Monjalon <thomas at monjalon.net> wrote:

> 22/01/2020 11:16, Kalesh A P:
> > From: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>
> >
> > Adding support for recovery event in rte_eth_event framework.
> > FW error and FW reset conditions would be managed by PMD.
> > In such cases, PMD would need recovery events to notify application
> > about PMD has recovered from FW reset or FW error.
> >
> > Signed-off-by: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>
> > Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
> > Reviewed-by: Somnath Kotur <somnath.kotur at broadcom.com>
> > ---
> > --- a/lib/librte_ethdev/rte_ethdev.h
> > +++ b/lib/librte_ethdev/rte_ethdev.h
> > @@ -3015,6 +3015,7 @@ enum rte_eth_event_type {
> >       RTE_ETH_EVENT_NEW,      /**< port is probed */
> >       RTE_ETH_EVENT_DESTROY,  /**< port is released */
> >       RTE_ETH_EVENT_IPSEC,    /**< IPsec offload related event */
> > +     RTE_ETH_EVENT_RECOVERED, /**< port recovered from an error */
>
> What the application is supposed to do when receiving such event?
>
[Kalesh]:  RTE_ETH_EVENT_RECOVERED event is an indication to the
application that PMD has recovered from the reset and is functional
again(i.e control path and data path is up again). On receiving this event
from PMD, application has to re-create any flow rules created prior to the
reset.

-- 
Regards,
Kalesh A P