Re: [PATCH v2] net/idpf: fix Tx of large mbuf segments

[Bruce Richardson <bruce.richardson@intel.com>]

On Wed, Jul 01, 2026 at 09:44:52AM +0100, Medvedkin, Vladimir wrote:
> 
> On 7/1/2026 9:23 AM, Bruce Richardson wrote:
> > When TSO is enabled, and we get a packet to transmit where an individual
> > mbuf segment is longer than 16k, we need to split that segment across
> > multiple Tx descriptors. This support is present in the single-queue
> > mode of idpf - since it shares common code with the other Intel drivers
> > -  but was missing from the splitq path.
> > 
> > This patch adds the proper data path handling. Previous work ensured
> > that the descriptor count calculation took over-sized segments into
> > account but the actual descriptor writing part was overlooked.
> > 
> > Fixes: 770f4dfe0f79 ("net/idpf: support basic Tx data path")
> > Fixes: 2904020f8313 ("net/intel: add common function to calculate needed descs")
> > Cc: stable@dpdk.org
> > 
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> Acked-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
> > ---
> > V2: change check for number of free descriptor slots to use the correct
> >      count, rather than just the number of mbuf segments passed
> > ---
> >   drivers/net/intel/idpf/idpf_common_rxtx.c | 43 ++++++++++++++++++-----
> >   1 file changed, 35 insertions(+), 8 deletions(-)
> > 
Patch applied to dpdk-next-net-intel.

/Bruce