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Drivers which are >>>>> not migrated are still using VXLAN-GPE in tests. >>>>> >>>>> This commit is to restore the support for VXLAN-GPE in testpmd. >>>>> >>>>> Fixes: da118115d95c ("app/testpmd: support matching any VXLAN field") >>>>> Signed-off-by: Gavin Li >>>>> >>>> >>>> Hi Gavin, >>>> >>>> The original patch was from you, right? What went wrong? >>> The remove of VXLAN-GPE from testpmd is too aggressive since there are >>> drivers which are not migrated are still using VXLAN-GPE. It's better to >>> keep it till the day to remove the RTE item of VXLAN-GPE from DPDK. >>> >> >> Sorry, I was not clear enough maybe, I was asking more details on the >> problem? > > I remember I was suggesting Gavin to remove testpmd code based on the old API. > And he realized it was too much agressive later. > >> With a net/vxlan commit [1] in this release, (this commit is part of >> -rc1), VXLAN & VXLAN-GPE headers combined and VXLAN-GBP header added to >> this combined struct. VXLAN-GPE header is marked as deprecated. >> Testpmd is also updated to use new headers, that is the commit in the >> fixes tag of this patch. >> >> But drivers using old, now depreciated, VXLAN structs won't able to use >> testpmd to test, so I agree, may be I merged the patch too early. > > Yes, so this patch re-add testpmd code for the old API. > >> As this patch was part of -rc1, I wonder why we didn't get any complaint >> about not able to test VXLAN-GPE? > > Maybe it is tested only with mlx5. > >> Btw, if we revert this patch, is there a way to test VXLAN-GBP? Because >> it only exists as part of new combined VXLAN struct? >> Instead of reverting the commit all together, is there way to keep old >> capability in testpmd, but add feature to test VXLAN-GBP? > > It is not a complete revert, we keep GBP in the new API. > So what I was asking done already, let me check the patch again. >> And another issue is, there can still some users of the VXLAN-GPE header >> in the net library, perhaps that also deprecated immaturely. > > It is just marked as deprecated. > >> Can you please send a deprecation note for combining VXLAN headers and >> removing VXLAN-GPE in v24.11? Please CC all drivers implementing this >> flow pattern. This can be way to highlight the issue to driver >> maintainers and communicate the change with end users. > > 24.11 is probably too early. > I propose to keep it as deprecated for compatibility, > and maybe remove in one year? > No strong opinion, both v24.11 or v25.11 is OK. Normally I would go with v25.11, but for VXLAN I expect only small users will be impacted and only a few driver needs update, so perhaps v24.11 also can be a valid target. We can get comment from driver maintainers to the deprecation notice, but not able to get this from potential users.