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[54.225.227.206]) by mx.google.com with ESMTP id i139si411518iti.197.2017.09.25.15.01.30; Mon, 25 Sep 2017 15:01:30 -0700 (PDT) Received-SPF: pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.225.227.206 as permitted sender) client-ip=54.225.227.206; Authentication-Results: mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.225.227.206 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Received: by lists.linaro.org (Postfix, from userid 109) id 0EC3D60A4A; Mon, 25 Sep 2017 22:01:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on ip-10-142-244-252 X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by lists.linaro.org (Postfix) with ESMTP id 78C7660AF4; Mon, 25 Sep 2017 22:00:27 +0000 (UTC) X-Original-To: lng-odp@lists.linaro.org Delivered-To: lng-odp@lists.linaro.org Received: by lists.linaro.org (Postfix, from userid 109) id 4DEE160805; Mon, 25 Sep 2017 22:00:20 +0000 (UTC) Received: from forward102j.mail.yandex.net (forward102j.mail.yandex.net [5.45.198.243]) by lists.linaro.org (Postfix) with ESMTPS id 55468607E6 for ; Mon, 25 Sep 2017 22:00:18 +0000 (UTC) Received: from mxback2g.mail.yandex.net (mxback2g.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b7:163]) by forward102j.mail.yandex.net (Yandex) with ESMTP id 5883456040D4 for ; Tue, 26 Sep 2017 01:00:16 +0300 (MSK) Received: from smtp4p.mail.yandex.net (smtp4p.mail.yandex.net [2a02:6b8:0:1402::15:6]) by mxback2g.mail.yandex.net (nwsmtp/Yandex) with ESMTP id jrULiq35o2-0GVik5WN; Tue, 26 Sep 2017 01:00:16 +0300 Received: by smtp4p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id YWIwh59QMn-0FFO2NfF; Tue, 26 Sep 2017 01:00:15 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) From: Github ODP bot To: lng-odp@lists.linaro.org Date: Tue, 26 Sep 2017 01:00:04 +0300 Message-Id: <1506376806-27771-2-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1506376806-27771-1-git-send-email-odpbot@yandex.ru> References: <1506376806-27771-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 193 Subject: [lng-odp] [PATCH API-NEXT v1 1/3] api: chksum: add ones complement sum function X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Petri Savolainen This is a low level function for IP/UDP/TCP checksum calculations on SW. HW cannot always calculate checksums, for that or other reasons application may need calculate ones compelement sums. This kind of low level function is easy to optimize e.g. with CPU vector instructions. In addition to this, there may be higher (packet) level functions introduced later. Signed-off-by: Petri Savolainen --- /** Email created from pull request 193 (psavol:next-ip-checksum) ** https://github.com/Linaro/odp/pull/193 ** Patch: https://github.com/Linaro/odp/pull/193.patch ** Base sha: 13322ca632f8ffba292bec058e597719bc54142d ** Merge commit sha: 405aaa1f3768170dd025f0a4c3bfdd63600f68df **/ include/odp/api/spec/chksum.h | 53 +++++++++++++++++++++++++ include/odp_api.h | 1 + platform/Makefile.inc | 1 + platform/linux-generic/Makefile.am | 1 + platform/linux-generic/include/odp/api/chksum.h | 34 ++++++++++++++++ 5 files changed, 90 insertions(+) create mode 100644 include/odp/api/spec/chksum.h create mode 100644 platform/linux-generic/include/odp/api/chksum.h diff --git a/include/odp/api/spec/chksum.h b/include/odp/api/spec/chksum.h new file mode 100644 index 000000000..e523ac286 --- /dev/null +++ b/include/odp/api/spec/chksum.h @@ -0,0 +1,53 @@ +/* Copyright (c) 2017, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/** + * @file + * + * ODP Hash functions + */ + +#ifndef ODP_API_CHKSUM_H_ +#define ODP_API_CHKSUM_H_ +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#include + +/** @defgroup odp_chksum ODP CHECKSUM + * ODP checksum functions + * @{ + */ + +/** + * Ones' complement sum of 16-bit words + * + * Calculates 16-bit ones' complement sum over the data. In case of odd number + * of bytes, calculation uses a zero byte as padding at the end. This algorithm + * may be used as part of e.g. IPv4/UDP/TCP checksum generation and checking. + * + * @param data Pointer to data. Data address must be 16-bit aligned + * in minimum. + * @param data_len Data length in bytes. In case of an odd number, calculation + * includes one byte of padding. + * + * @return Ones' complement sum + */ +uint16_t odp_chksum_ones_comp16(const void *data, uint32_t data_len); + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#include +#endif diff --git a/include/odp_api.h b/include/odp_api.h index 86232ee10..069ec9d1e 100644 --- a/include/odp_api.h +++ b/include/odp_api.h @@ -24,6 +24,7 @@ extern "C" { #include #include #include +#include #include #include #include diff --git a/platform/Makefile.inc b/platform/Makefile.inc index ac5cd765d..2699142db 100644 --- a/platform/Makefile.inc +++ b/platform/Makefile.inc @@ -22,6 +22,7 @@ odpapispecinclude_HEADERS = \ $(top_srcdir)/include/odp/api/spec/barrier.h \ $(top_srcdir)/include/odp/api/spec/buffer.h \ $(top_srcdir)/include/odp/api/spec/byteorder.h \ + $(top_srcdir)/include/odp/api/spec/chksum.h \ $(top_srcdir)/include/odp/api/spec/classification.h \ $(top_srcdir)/include/odp/api/spec/compiler.h \ $(top_srcdir)/include/odp/api/spec/cpu.h \ diff --git a/platform/linux-generic/Makefile.am b/platform/linux-generic/Makefile.am index 3e26aab4c..994bbbeee 100644 --- a/platform/linux-generic/Makefile.am +++ b/platform/linux-generic/Makefile.am @@ -36,6 +36,7 @@ odpapiinclude_HEADERS = \ $(srcdir)/include/odp/api/byteorder.h \ $(srcdir)/include/odp/api/classification.h \ $(srcdir)/include/odp/api/compiler.h \ + $(srcdir)/include/odp/api/chksum.h \ $(srcdir)/include/odp/api/cpu.h \ $(srcdir)/include/odp/api/cpumask.h \ $(srcdir)/include/odp/api/crypto.h \ diff --git a/platform/linux-generic/include/odp/api/chksum.h b/platform/linux-generic/include/odp/api/chksum.h new file mode 100644 index 000000000..18dcb6d11 --- /dev/null +++ b/platform/linux-generic/include/odp/api/chksum.h @@ -0,0 +1,34 @@ +/* Copyright (c) 2017, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/** + * @file + * + * ODP checksum functions + */ + +#ifndef ODP_PLAT_CHKSUM_H_ +#define ODP_PLAT_CHKSUM_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +/** @ingroup odp_chksum + * @{ + */ + +/** + * @} + */ + +#include + +#ifdef __cplusplus +} +#endif + +#endif