[dpdk-dev] [PATCH v6 6/9] ethdev: support multi-host in representor

[Andrew Rybchenko]

On 2/14/21 6:21 AM, Xueming Li wrote:
> The NIC can have multiple PCIe links and can be attached to the multiple
> hosts, for example the same single NIC can be shared for multiple server
> units in the rack. On each PCIe link NIC can provide multiple PFs and
> VFs/SFs based on these ones. To provide the unambiguous identification
> of the PCIe function the controller index is added. The full representor
> identifier consists of three indices - controller index, PF index, and
> VF or SF index (if any).
> 
> This patch introduces controller index to ethdev representor syntax,
> examples:
> 
> [[c#]pf#]vf#: VF port representor/s, example: pf0vf1
> [[c#]pf#]sf#: SF port representor/s, example: c1pf1sf[0-3]
> 
> c# is controller(host) ID/range in case of multi-host, optional.
> 
> For user application (e.g. OVS), PMD is responsible to interpret and
> locate representor device based on controller ID, PF ID and VF/SF ID in
> representor syntax.
> 
> Signed-off-by: Xueming Li <xuemingl at nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
> Acked-by: Thomas Monjalon <thomas at monjalon.net>

Acked-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>