[dpdk-dev] [PATCH V4 8/9] app/testpmd: show example to handle hot unplug

[Thomas Monjalon]

03/07/2018 11:35, Guo, Jia:
> On 7/1/2018 3:46 PM, Matan Azrad wrote:
> > From: Jeff Guo
> >> --- a/app/test-pmd/testpmd.c
> >> +++ b/app/test-pmd/testpmd.c
> >> @@ -2206,9 +2209,12 @@ eth_dev_event_callback(char *device_name, enum
> >> rte_dev_event_type type,
> >>   	case RTE_DEV_EVENT_REMOVE:
> >>   		RTE_LOG(ERR, EAL, "The device: %s has been removed!\n",
> >>   			device_name);
> >> -		/* TODO: After finish failure handle, begin to stop
> >> -		 * packet forward, stop port, close port, detach port.
> >> -		 */
> >> +		ret = rte_eth_dev_get_port_by_name(device_name, &port_id);
> > As you probably know, 1 rte_device may be associated to more than one ethdev ports, so the ethdev port name can be different from rte_device name.
> > Looks like we need a new ethdev API to get all the ports associated to one rte_device.
> 
> agree, seems that the the old ethdev API have some issue when got all 
> port by device name. we could check with ethdev maintainer and fix it by 
> specific ethdev patch later.

This ethdev function could return an error if several ports match.

Ideally, we should not use this function at all.
If you want to manage an ethdev port, why are you using an EAL event?
There is an ethdev callback mechanism for port removal.