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From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/ethdev Bug 1958] Broadcom bnxt
 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE always on
Date: Wed, 17 Jun 2026 14:51:42 +0000
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X-Bugzilla-Product: DPDK
X-Bugzilla-Component: ethdev
X-Bugzilla-Version: 26.03
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: riaan.wiid@vastech.co.za
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http://bugs.dpdk.org/show_bug.cgi?id=3D1958

            Bug ID: 1958
           Summary: Broadcom bnxt RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE always
                    on
           Product: DPDK
           Version: 26.03
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: riaan.wiid@vastech.co.za
  Target Milestone: ---

Environment
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

dpdk-26.03 (tag v26.03)
OS: Rocky Linux (9.3 (Blue Onyx))
HW: Broadcom BCM57414 NetXtreme-E 10Gb/25Gb
Compiler: gcc 14.2.1 20240801 (Red Hat 14.2.1-1)

Description of Problem
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE is always enabled if not enabling PTP sup=
port
on a NIC port. In our case we are not enabling PTP support which means
RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE is enabled by default on all queues, whic=
h is
undesired behaviour when making use of Mbuf refcnt in our designs.

This behaviour seems to have started after this commit
https://github.com/DPDK/dpdk/commit/5722ed1aafd2fc5ad44e432a4f6c7bd337c673d8

RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE cannot be disabled through the offloads
specified in either rte_eth_dev_configure() or rte_eth_tx_queue_setup()

--=20
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