Re: [dpdk-dev] [dpdk-stable] [PATCH] net/i40e: revert fix offload not supported mask

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Wednesday, December 12, 2018 6:01 AM
> To: Didier Pallard <didier.pallard@6wind.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Ye, Xiaolong <xiaolong.ye@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Xing, Beilei <beilei.xing@intel.com>
> Subject: Re: [dpdk-stable] [PATCH] net/i40e: revert fix offload not supported
> mask
> 
> On 12/11/2018 5:25 PM, Didier Pallard wrote:
> > This reverts
> > commit 09a62d75691f ("net/i40e: fix offload not supported mask")
> >
> > Contrary to what is said in above patch commit log,
> > I40E_TX_OFFLOAD_NOTSUP_MASK is the mask of Tx offload bits that are
> > part of PKT_TX_OFFLOAD_MASK but not included in I40E_TX_OFFLOAD_MASK.
> > Above patch erroneously includes all PKT_RX_OFFLOAD_ bits in the
> > I40E_TX_OFFLOAD_NOTSUP_MASK, this is not what is expected.
> 
> Argh, yes it does set Rx offload bits, +1 to revert.
> cc'ed author and maintainers of the PMD.

I think this revert make sense to me, I didn't notice Tx offload and Rx offload shared the same 64 bits previously 

> 
> > Restore the initial xor that gives the expected result.
> >
> > Fixes: 09a62d75691f ("net/i40e: fix offload not supported mask")
> > Cc: stable@dpdk.org
> > Signed-off-by: Didier Pallard <didier.pallard@6wind.com>
> > ---
> >  drivers/net/i40e/i40e_rxtx.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/i40e/i40e_rxtx.c
> > b/drivers/net/i40e/i40e_rxtx.c index e1152ff0ea58..ab74a488f88b 100644
> > --- a/drivers/net/i40e/i40e_rxtx.c
> > +++ b/drivers/net/i40e/i40e_rxtx.c
> > @@ -69,7 +69,7 @@
> >  		I40E_TX_IEEE1588_TMST)
> >
> >  #define I40E_TX_OFFLOAD_NOTSUP_MASK \
> > -		~(PKT_TX_OFFLOAD_MASK & I40E_TX_OFFLOAD_MASK)
> > +		(PKT_TX_OFFLOAD_MASK ^ I40E_TX_OFFLOAD_MASK)
> >
> >  static inline void
> >  i40e_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union i40e_rx_desc
> > *rxdp)
> >