[dpdk-dev] [PATCH v2] doc: refine ethernet and VLAN flow rule items

[Ferruh Yigit]

On 5/3/2020 8:17 AM, Dekel Peled wrote:
> Specified pattern may be translated in different manner.
> For example the pattern "eth / ipv4" can be translated to match
> untagged packets only, since the pattern doesn't specify a VLAN item.
> It can also be translated to match both tagged and untagged packets,
> for the same reason.
> This patch updates the rte_flow documentation to clearly specify the
> required pattern to use.
> For example:
> To match tagged ipv4 packets, the pattern "eth / vlan / ipv4 / end"
> should be used.
> To match untagged ipv4 packets, the pattern "eth / ipv4 / end"
> should be used.
> To match all IPV4 packets, both tagged and untagged, need to apply
> two rules with the patterns above.
> To match both tagged and untagged packets of any type, the pattern
> "eth / end" should be used.
> 
> Signed-off-by: Dekel Peled <dekelp at mellanox.com>

Good to have this clarification, but also I believe we should notify the PMD
maintainers in case there are different implementations.

I have cc'ed the PMD maintainers that implemented flow_ops, to notify from the
change, planning to wait one or two more days before merging it.