Re: [dpdk-dev] [PATCH v3 0/4] make vhost PMD available for secondary processes

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 2/6/20 2:39 AM, Itsuro Oda wrote:
> vhost PMD has not been available for secondary processes since
> DPDK v18.11.  (https://bugs.dpdk.org/show_bug.cgi?id=194)
> (for a long term !)
> This series of patches intend to make vhost PMD available for
> secondary processes.
> Because now setting vhost driver to communicate with a vhost-user
> master (ex. Qemu) is accomplished by the probe function of the
> primary process, only the primary process can be a vhost-user
> slave.
> With this patch, setting vhost driver is delayed at eth_dev
> configuration in order to be able to set it from a secondary
> process. Because (in the first place,) setting vhost driver is not
> necessary to be done at probe (it is enough to be done up to eth_dev
> start), this fix is no problem for the primary process.
> There is a precondition that the same process has to operate
> a vhost interface from beginning to end (from eth_dev configuration
> to eth_dev close). (This patch leaves it to user's responsibility.)
> This precondition will not be a problem in most use cases
> (including SPP).
> 
> v2:
> - add signed-off-by
> - fix spelling error
> 
> v3:
> - rebase on dpdk-next-virtio master
> - change patch order
> - fix subject and commit message
> 
> Itsuro Oda (4):
>   net/vhost: allocate interface name from heap
>   net/vhost: delay vhost driver setup
>   net/vhost: make secondary probe complete
>   net/vhost: remove an unused member
> 
>  drivers/net/vhost/rte_eth_vhost.c | 152 +++++++++++++++++-------------
>  1 file changed, 88 insertions(+), 64 deletions(-)
> 

Applied to dpdk-next-virtio/master

Thanks,
Maxime