From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id 138475AAE for ; Thu, 29 Jan 2015 09:50:01 +0100 (CET) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id t0T8o0vH032239-t0T8o0vI032239; Thu, 29 Jan 2015 14:50:00 +0600 Received: from EXCASHUB1.rgp.local (192.168.40.51) by EdgeForefront.rgp.local (192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:48:48 +0600 Received: from r220.rgp.local (192.168.59.10) by excashub1.rgp.local (192.168.40.48) with Microsoft SMTP Server (TLS) id 14.2.247.3; Thu, 29 Jan 2015 14:50:04 +0600 From: Yerden Zhumabekov To: Date: Thu, 29 Jan 2015 14:49:47 +0600 Message-ID: <395e2ab8e7a5e58b7dc5eb8b7520a5039a7e9e54.1417092208.git.e_zhumabekov@sts.kz> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.59.10] X-FEAS-SYSTEM-WL: e_zhumabekov@sts.kz Subject: [dpdk-dev] [PATCH v6 4/7] hash: add rte_hash_crc_8byte function X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2015 08:50:02 -0000 SSE4.2 provides CRC32 intrinsic with 8-byte operand. Signed-off-by: Yerden Zhumabekov --- lib/librte_hash/rte_hash_crc.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h index 45b0dce..6cc67cd 100644 --- a/lib/librte_hash/rte_hash_crc.h +++ b/lib/librte_hash/rte_hash_crc.h @@ -413,6 +413,22 @@ rte_hash_crc_4byte(uint32_t data, uint32_t init_val) } /** + * Use single crc32 instruction to perform a hash on a 8 byte value. + * + * @param data + * Data to perform hash on. + * @param init_val + * Value to initialise hash generator. + * @return + * 32bit calculated hash value. + */ +static inline uint32_t +rte_hash_crc_8byte(uint64_t data, uint32_t init_val) +{ + return crc32c_sse42_u64(data, init_val); +} + +/** * Use crc32 instruction to perform a hash. * * @param data -- 1.7.9.5