Re: [dpdk-dev] [PATCH 1/2] ethdev: fix hotplug attach

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2016-10-07 15:01, David Marchand:
> If a pci probe operation creates a port but, for any reason, fails to
> finish this operation and decides to delete the newly created port, then
> the last created port id can not be trusted anymore and any subsequent
> attach operations will fail.
> 
> This problem was noticed while working on a vm that had a virtio-net
> management interface bound to the virtio-net kernel driver and no port
> whitelisted in the commandline:
[...]
> Two solutions:
> - either update the last created port index to something invalid
>   (when freeing a ethdev port),
> - or rely on the port count, before and after the eal attach.
> 
> The latter solution seems (well not really more robust but at least)
> less fragile than the former.
> We still have some issues with drivers that create multiple ethdev
> ports with a single probe operation, but this was already the case.
> 
> Fixes: b0fb26685570 ("ethdev: convert to EAL hotplug")
> 
> Reported-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
> Signed-off-by: David Marchand <david.marchand@6wind.com>

Series applied, thanks