[PATCH v3] net/iavf: add debug checks for mbuf

[Thomas Monjalon]

19/02/2023 09:30, Zhang, Qi Z:
> From: Mingjin Ye <mingjinx.ye at intel.com>
> > 
> > The scalar Tx path would send wrong mbuf that causes the kernel driver to
> > fire the MDD event.
> > 
> > This patch adds mbuf detection in tx_prepare and enables it by defining
> > `RTE_ETHDEV_DEBUG_TX` macro to fix this issue. If validation fails, rte_errno
> 
> This is a debug utility but not a fix, enable this check will significantly downgrade the performance
> Removed  "to fix this issue"
> 
> > will be set to EINVAL and returned.
> > 
> > Fixes: 3fd32df381f8 ("net/iavf: check Tx packet with correct UP and queue")
> > Fixes: 12b435bf8f2f ("net/iavf: support flex desc metadata extraction")
> > Fixes: f28fbd1e6b50 ("net/iavf: check max SIMD bitwidth")
> 
> Removed all the fix lines
> 
> > Cc: stable at dpdk.org

I think the "stable line" should be removed as well.
It is a new debug feature, we should not try to backport it.