[PATCH 3/6] net/i40e: drop unimplemented UDP TSO from Tx mask

Ciara Loftus ciara.loftus at intel.com
Thu Sep 24 15:13:43 CEST 2026


Commit d9550ce576a7 ("net/intel: create common checksum Tx offload
function") added RTE_ETH_TX_OFFLOAD_UDP_TSO to the scalar Tx offload mask
when merging i40e's checksum helper with ice's, but UDP TSO was never
actually wired up for i40e. i40e_calc_context_desc() does not trigger on
RTE_MBUF_F_TX_UDP_SEG, so no context descriptor is built for UDP
segmentation, and get_context_desc() only invokes i40e_set_tso_ctx() for
RTE_MBUF_F_TX_TCP_SEG, so the TSO fields are never programmed for a
UDP-segmented packet either.

Fix this by removing the unimplemented offload from the mask.

Fixes: d9550ce576a7 ("net/intel: create common checksum Tx offload function")
Cc: stable at dpdk.org

Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
---
 drivers/net/intel/i40e/i40e_rxtx.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/intel/i40e/i40e_rxtx.h b/drivers/net/intel/i40e/i40e_rxtx.h
index 88d47f261e4..09773420644 100644
--- a/drivers/net/intel/i40e/i40e_rxtx.h
+++ b/drivers/net/intel/i40e/i40e_rxtx.h
@@ -97,7 +97,6 @@ enum i40e_header_split_mode {
 		RTE_ETH_TX_OFFLOAD_SCTP_CKSUM |		\
 		RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM |	\
 		RTE_ETH_TX_OFFLOAD_TCP_TSO |		\
-		RTE_ETH_TX_OFFLOAD_UDP_TSO |		\
 		RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |	\
 		RTE_ETH_TX_OFFLOAD_GRE_TNL_TSO |	\
 		RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO |	\
-- 
2.43.0



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