patch 'net/bnxt: fix Tx address for external mbuf' has been queued to stable release 25.11.3

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 25.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/01/26. 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/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/d3198a30728c1ace071a5d9bb769ea7ca0d7f52f

Thanks.

Kevin

---
>From d3198a30728c1ace071a5d9bb769ea7ca0d7f52f Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde at broadcom.com>
Date: Wed, 3 Jan 2024 07:14:20 -0800
Subject: [PATCH] net/bnxt: fix Tx address for external mbuf

[ upstream commit cb49ce368e83b2eb4a249d1d20f1da199be6d6c8 ]

Use buf_addr for mbufs from external pool instead of using iova
addresses. Uses rte_pktmbuf_mtod_offset() to compute the buffer
address for both the first segment and subsequent segments when
the mbuf is marked as RTE_MBUF_F_EXTERNAL.

Fixes: 42b883535804 ("net/bnxt: use new API to get IOVA address")

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
Signed-off-by: Mohammad Shuab Siddique <mohammad-shuab.siddique at broadcom.com>
---
 drivers/net/bnxt/bnxt_txr.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_txr.c b/drivers/net/bnxt/bnxt_txr.c
index 7ef5b15ae8..28171b273a 100644
--- a/drivers/net/bnxt/bnxt_txr.c
+++ b/drivers/net/bnxt/bnxt_txr.c
@@ -326,5 +326,8 @@ static int bnxt_start_xmit(struct rte_mbuf *tx_pkt,
 	else
 		txbd->flags_type |= lhint_arr[tx_pkt->pkt_len >> 9];
-	txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(tx_pkt));
+	if (tx_pkt->ol_flags & RTE_MBUF_F_EXTERNAL)
+		txbd->address = rte_cpu_to_le_64(rte_pktmbuf_mtod_offset(tx_pkt, uint64_t, 0));
+	else
+		txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(tx_pkt));
 	*last_txbd = txbd;
 
@@ -483,5 +486,10 @@ static int bnxt_start_xmit(struct rte_mbuf *tx_pkt,
 
 		txbd = &txr->tx_desc_ring[prod];
-		txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(m_seg));
+		if (m_seg->ol_flags & RTE_MBUF_F_EXTERNAL)
+			txbd->address = rte_cpu_to_le_64(rte_pktmbuf_mtod_offset(m_seg,
+										 uint64_t,
+										 0));
+		else
+			txbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova(m_seg));
 		txbd->flags_type = TX_BD_SHORT_TYPE_TX_BD_SHORT;
 		txbd->len = m_seg->data_len;
-- 
2.55.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-07-28 16:54:51.524370834 +0100
+++ 0024-net-bnxt-fix-Tx-address-for-external-mbuf.patch	2026-07-28 16:54:50.765392538 +0100
@@ -1 +1 @@
-From cb49ce368e83b2eb4a249d1d20f1da199be6d6c8 Mon Sep 17 00:00:00 2001
+From d3198a30728c1ace071a5d9bb769ea7ca0d7f52f Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit cb49ce368e83b2eb4a249d1d20f1da199be6d6c8 ]
+
@@ -12 +13,0 @@
-Cc: stable at dpdk.org
@@ -21 +22 @@
-index fb5be224d9..44b9d1fb19 100644
+index 7ef5b15ae8..28171b273a 100644