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Mon, 21 Jul 2025 13:44:42 -0400 (EDT) From: Thomas Monjalon To: Morten =?UTF-8?B?QnLDuHJ1cA==?= Cc: Bruce Richardson , dev@dpdk.org, Konstantin Ananyev Subject: Re: [PATCH] doc: announce mbuf fast free configuration requirements Date: Mon, 21 Jul 2025 19:44:41 +0200 Message-ID: <3800967.RUnXabflUD@thomas> In-Reply-To: <50e97877dbc7422fbe6ba8e86e9ce2ae@huawei.com> References: <20250713142127.349940-1-mb@smartsharesystems.com> <50e97877dbc7422fbe6ba8e86e9ce2ae@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 15/07/2025 17:12, Konstantin Ananyev: >=20 > > For TX mbuf fast release offload, the mbuf mempool pointer will be added > > to the ethdev tx queue configuration structure, so the ethdev TX burst > > operation doesn't need to fetch it from the first mbuf of each burst be= ing > > fast free'd to the mempool. > >=20 > > Signed-off-by: Morten Br=C3=B8rup > > --- > > doc/guides/rel_notes/deprecation.rst | 6 ++++++ > > 1 file changed, 6 insertions(+) > >=20 > > diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_note= s/deprecation.rst > > index e2d4125308..a7b4505a24 100644 > > --- a/doc/guides/rel_notes/deprecation.rst > > +++ b/doc/guides/rel_notes/deprecation.rst > > @@ -152,3 +152,9 @@ Deprecation Notices > > * bus/vmbus: Starting DPDK 25.11, all the vmbus API defined in > > ``drivers/bus/vmbus/rte_bus_vmbus.h`` will become internal to DPDK. > > Those API functions are used internally by DPDK core and netvsc PMD. > > + > > +* ethdev: Configuring a transmit queue for fast mbuf release will > > + require specifying which mempool to free the mbufs to. > > + For this, a new field ``struct rte_mempool *mp_fast_free`` will be > > + added to ``struct rte_eth_txconf``, and must be set when the > > + ``RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE`` offload flag is set. > > -- >=20 > Acked-by: Konstantin Ananyev Looks like this new requirement is not encouraged a lot. Per our policy, it will miss the release 25.07.