From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3AB9FA00C2; Mon, 23 May 2022 16:26:07 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2B4B54014F; Mon, 23 May 2022 16:26:07 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by mails.dpdk.org (Postfix) with ESMTP id E700440141 for <dev@dpdk.org>; Mon, 23 May 2022 16:26:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1653315965; x=1684851965; h=from:to:cc:subject:date:message-id; bh=Fi6zXEVjFe+YFEjt+KuNxOXV0VhofC5t/ugsZ4aHi2s=; b=jlMui4uM11aKc5PHgXOt5ucm+rMGHcQzAzhVJT+1kuD7EbWskLbOe6k3 PUTRpYQWAuEySArwNrFBB1TDPy+HiqOmnaKqnWFLmJ9tyc3YuNBUThyBh QMg8hq9OBWSHsvZW8exiSftw8owKmaP5knh3JDBmFjQPdhX/ubWAqPEWK UEYzd0e/8DL3sCDQyLdgtxMhrDziNOqW5NvKB5JAOxtGz5jDDnh7kROC/ EZFcxWcrRWHJMvKfV5lryavmePNbqtpGcEL+e7UKh1xix85kZRdeIYQ+8 63WsDLFh18oFGKVG7ch4j+UQkYL858QD1jo3Mc4hCiDqX0EMvTkC1HVh5 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10356"; a="273229717" X-IronPort-AV: E=Sophos;i="5.91,246,1647327600"; d="scan'208";a="273229717" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 May 2022 07:26:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,246,1647327600"; d="scan'208";a="600676321" Received: from npg-dpdk-xuan-cbdma.sh.intel.com ([10.67.110.228]) by orsmga008.jf.intel.com with ESMTP; 23 May 2022 07:26:01 -0700 From: xuan.ding@intel.com To: thomas@monjalon.net, andrew.rybchenko@oktetlabs.ru, mdr@ashroe.eu Cc: stephen@networkplumber.org, mb@smartsharesystems.com, dev@dpdk.org, Xuan Ding <xuan.ding@intel.com> Subject: [PATCH] doc: announce header split deprecation Date: Mon, 23 May 2022 14:20:16 +0000 Message-Id: <20220523142016.44451-1-xuan.ding@intel.com> X-Mailer: git-send-email 2.17.1 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org From: Xuan Ding <xuan.ding@intel.com> RTE_ETH_RX_OFFLOAD_HEADER_SPLIT offload was introduced some time ago to substitute bit-field header_split in struct rte_eth_rxmode. It allows to enable header split offload with the header size controlled using split_hdr_size in the same structure. Right now, no single PMD actually supports RTE_ETH_RX_OFFLOAD_HEADER_SPLIT with above definition. Many examples and test apps initialize the field to 0 explicitly. The most of drivers simply ignore split_hdr_size since the offload is not advertised, but some double-check that its value is 0. So the RTE_ETH_RX_OFFLOAD_HEADER_SPLIT and split_header_size field will be removed in DPDK 22.11. Signed-off-by: Xuan Ding <xuan.ding@intel.com> --- doc/guides/rel_notes/deprecation.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 4e5b23c53d..b8114f29ed 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -125,3 +125,7 @@ Deprecation Notices applications should be updated to use the ``dmadev`` library instead, with the underlying HW-functionality being provided by the ``ioat`` or ``idxd`` dma drivers + +* ethdev: After bit-field header split was removed, the ``RTE_ETH_RX_OFFLOAD_HEADER_SPLIT`` +offload and the ``split_hdr_size`` field in structure ``rte_eth_rxmode`` to enable header +split offload are not supported in any PMDs. They will be removed in DPDK 22.11. -- 2.17.1