[PATCH] net/intel: fix igb tx queue offloads capability

[Deng, KaiwenX]

> -----Original Message-----
> From: Richardson, Bruce <bruce.richardson at intel.com>
> Sent: Monday, April 28, 2025 11:21 PM
> To: Deng, KaiwenX <kaiwenx.deng at intel.com>
> Cc: dev at dpdk.org; stable at dpdk.org; Zhang, Qi Z <qi.z.zhang at intel.com>;
> Yaroslav Brustinov <ybrustin at cisco.com>
> Subject: Re: [PATCH] net/intel: fix igb tx queue offloads capability
> 
> On Mon, Apr 14, 2025 at 04:53:52PM +0800, Kaiwen Deng wrote:
> > The igb driver assigns the tx port offload capability to the tx queue
> > offload capability.
> >
> > This commit will fix this issue.
> >
> > Fixes: daa3b0833f08 ("net/e1000: fix Tx offload capability typos")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Kaiwen Deng <kaiwenx.deng at intel.com>
> > ---
> >  drivers/net/intel/e1000/igb_rxtx.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/net/intel/e1000/igb_rxtx.c
> > b/drivers/net/intel/e1000/igb_rxtx.c
> > index 4276bb6d31..b63de2354f 100644
> > --- a/drivers/net/intel/e1000/igb_rxtx.c
> > +++ b/drivers/net/intel/e1000/igb_rxtx.c
> > @@ -1490,11 +1490,9 @@ igb_get_tx_port_offloads_capa(struct
> > rte_eth_dev *dev)  uint64_t  igb_get_tx_queue_offloads_capa(struct
> > rte_eth_dev *dev)  {
> > -	uint64_t tx_queue_offload_capa;
> > -
> > -	tx_queue_offload_capa = igb_get_tx_port_offloads_capa(dev);
> > +	RTE_SET_USED(dev);
> >
> > -	return tx_queue_offload_capa;
> > +	return 0;
> >  }
> >
> 
> I suspect there may be more instances in the code where we do this. For
> example, I see the same pattern used in em_rxtx.c in e1000. Can you quickly
> check our other drivers to see if the same mistake is repeated elsewhere other
> than "igb" and "em"?
Hi Bruce,
After checking, the same error is not repeated anywhere else except on "igb" and "em" .
However, I noticed that there is only one txq available for the "em" device, and according 
to the comments in the code, This design may be intentional, as port offloading and queue 
offloading are practically the same in the case of only one txq.
> 
> /Bruce