On Wed, Jul 01, 2026 at 09:44:52AM +0100, Medvedkin, Vladimir wrote:

On 7/1/2026 9:23 AM, Bruce Richardson wrote:

quoted

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 <redacted>

Acked-by: Vladimir Medvedkin <redacted>

quoted

---
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