patch 'net/ngbe: support USO' has been queued to stable release 24.11.7

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 24.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/05/26. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/eea9c2f319773b9a79b9ce447753399760d77b5f

Thanks.

Luca Boccassi

---
>From eea9c2f319773b9a79b9ce447753399760d77b5f Mon Sep 17 00:00:00 2001
From: Zaiyu Wang <zaiyuwang at trustnetic.com>
Date: Tue, 30 Jun 2026 06:51:23 -0700
Subject: [PATCH] net/ngbe: support USO

[ upstream commit e7947fadb9f7a7255d3dba58b81ea67cf952f466 ]

USO (UDP Segmentation Offload), also known as UFO (UDP Fragmentation
Offload), is a hardware offload rarely seen in DPDK. Its implementation
is similar to TSO (TCP Segmentation Offload), so the driver enables
USO based on existing TSO support.

The driver has advertised RTE_ETH_TX_OFFLOAD_UDP_TSO in tx_offload_capa
since its initial integration, but the data path never implemented the
actual segmentation support. This commit fills that gap by enabling USO
in the transmit path, making the advertised capability fully functional.

Note:
USO segments UDP packets, requiring hardware to recalculate both IP
and UDP checksums due to length change. Thus, USO implicitly requires
IP and UDP checksum offloads, same as TSO.

Fixes: 9f3206140274 ("net/ngbe: support TSO")

Signed-off-by: Zaiyu Wang <zaiyuwang at trustnetic.com>
---
 drivers/net/ngbe/ngbe_rxtx.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ngbe/ngbe_rxtx.c b/drivers/net/ngbe/ngbe_rxtx.c
index 467f1cc9c8..5c8c033b38 100644
--- a/drivers/net/ngbe/ngbe_rxtx.c
+++ b/drivers/net/ngbe/ngbe_rxtx.c
@@ -30,6 +30,7 @@ static const u64 NGBE_TX_OFFLOAD_MASK = (RTE_MBUF_F_TX_IP_CKSUM |
 		RTE_MBUF_F_TX_VLAN |
 		RTE_MBUF_F_TX_L4_MASK |
 		RTE_MBUF_F_TX_TCP_SEG |
+		RTE_MBUF_F_TX_UDP_SEG |
 		NGBE_TX_IEEE1588_TMST);
 
 #define NGBE_TX_OFFLOAD_NOTSUP_MASK \
@@ -317,7 +318,7 @@ ngbe_set_xmit_ctx(struct ngbe_tx_queue *txq,
 	type_tucmd_mlhl |= NGBE_TXD_PTID(tx_offload.ptid);
 
 	/* check if TCP segmentation required for this packet */
-	if (ol_flags & RTE_MBUF_F_TX_TCP_SEG) {
+	if (ol_flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG)) {
 		tx_offload_mask.l2_len |= ~0;
 		tx_offload_mask.l3_len |= ~0;
 		tx_offload_mask.l4_len |= ~0;
@@ -427,7 +428,7 @@ tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags)
 		tmp |= NGBE_TXD_CC;
 		tmp |= NGBE_TXD_EIPCS;
 	}
-	if (ol_flags & RTE_MBUF_F_TX_TCP_SEG) {
+	if (ol_flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG)) {
 		tmp |= NGBE_TXD_CC;
 		/* implies IPv4 cksum */
 		if (ol_flags & RTE_MBUF_F_TX_IPV4)
@@ -447,7 +448,7 @@ tx_desc_ol_flags_to_cmdtype(uint64_t ol_flags)
 
 	if (ol_flags & RTE_MBUF_F_TX_VLAN)
 		cmdtype |= NGBE_TXD_VLE;
-	if (ol_flags & RTE_MBUF_F_TX_TCP_SEG)
+	if (ol_flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG))
 		cmdtype |= NGBE_TXD_TSE;
 	return cmdtype;
 }
@@ -483,6 +484,8 @@ tx_desc_ol_flags_to_ptype(uint64_t oflags)
 
 	if (oflags & RTE_MBUF_F_TX_TCP_SEG)
 		ptype |= RTE_PTYPE_L4_TCP;
+	else if (oflags & RTE_MBUF_F_TX_UDP_SEG)
+		ptype |= RTE_PTYPE_L4_UDP;
 
 	return ptype;
 }
@@ -764,7 +767,7 @@ ngbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 		olinfo_status = 0;
 		if (tx_ol_req) {
-			if (ol_flags & RTE_MBUF_F_TX_TCP_SEG) {
+			if (ol_flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG)) {
 				/* when TSO is on, paylen in descriptor is the
 				 * not the packet len but the tcp payload len
 				 */
@@ -1991,7 +1994,7 @@ ngbe_get_tx_port_offloads(struct rte_eth_dev *dev)
 		RTE_ETH_TX_OFFLOAD_TCP_CKSUM   |
 		RTE_ETH_TX_OFFLOAD_SCTP_CKSUM  |
 		RTE_ETH_TX_OFFLOAD_TCP_TSO     |
-		RTE_ETH_TX_OFFLOAD_UDP_TSO	   |
+		RTE_ETH_TX_OFFLOAD_UDP_TSO     |
 		RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
 
 	if (hw->is_pf)
-- 
2.47.3

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-07-03 12:55:49.038055683 +0100
+++ 0062-net-ngbe-support-USO.patch	2026-07-03 12:55:46.706574925 +0100
@@ -1 +1 @@
-From e7947fadb9f7a7255d3dba58b81ea67cf952f466 Mon Sep 17 00:00:00 2001
+From eea9c2f319773b9a79b9ce447753399760d77b5f Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit e7947fadb9f7a7255d3dba58b81ea67cf952f466 ]
+
@@ -22 +23,0 @@
-Cc: stable at dpdk.org
@@ -26,22 +27,3 @@
- doc/guides/rel_notes/release_26_07.rst |  7 +++++++
- drivers/net/ngbe/ngbe_rxtx.c           | 13 ++++++++-----
- 2 files changed, 15 insertions(+), 5 deletions(-)
-
-diff --git a/doc/guides/rel_notes/release_26_07.rst b/doc/guides/rel_notes/release_26_07.rst
-index 541608119a..ec35e13b49 100644
---- a/doc/guides/rel_notes/release_26_07.rst
-+++ b/doc/guides/rel_notes/release_26_07.rst
-@@ -187,6 +187,13 @@ New Features
- 
-   * Added support for ML-KEM and ML-DSA on CN20K platform.
- 
-+* **Updated Wangxun ngbe driver.**
-+
-+  * Implemented UDP Segmentation Offload (USO) in the transmit path.
-+    The ``RTE_ETH_TX_OFFLOAD_UDP_TSO`` capability was advertised
-+    since the driver's initial integration but the data path was missing;
-+    it is now functional.
-+
- * **Extended BPF API.**
- 
-   * Added an extensible BPF loading API comprising the function
+ drivers/net/ngbe/ngbe_rxtx.c | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
@@ -49 +31 @@
-index 91e215694c..a1389de9c0 100644
+index 467f1cc9c8..5c8c033b38 100644