From patchwork Wed Sep 3 06:05:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yerden Zhumabekov X-Patchwork-Id: 297 Return-Path: Received: from mgw.gov.kz (mgw.gov.kz [89.218.88.242]) by dpdk.org (Postfix) with ESMTP id B57452E8B for ; Wed, 3 Sep 2014 08:01:42 +0200 (CEST) Received: from mgw.gov.kz (mx.ctsat.kz [178.89.4.95]) by mgw.gov.kz with ESMTP id s8366FHY029973-s8366FHZ029973 for ; Wed, 3 Sep 2014 12:06:16 +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; Wed, 3 Sep 2014 12:05:11 +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; Wed, 3 Sep 2014 12:10:26 +0600 From: Yerden Zhumabekov To: Date: Wed, 3 Sep 2014 12:05:50 +0600 Message-ID: <1409724351-23786-2-git-send-email-e_zhumabekov@sts.kz> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> References: <1409724351-23786-1-git-send-email-e_zhumabekov@sts.kz> MIME-Version: 1.0 X-Originating-IP: [192.168.59.10] X-FEAS-SYSTEM-WL: e_zhumabekov@sts.kz Subject: [dpdk-dev] [PATCH 1/2] hash: add new rte_hash_crc_8byte call 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: Wed, 03 Sep 2014 06:01:43 -0000 SSE4.2 provides _mm_crc32_u64 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 b48b0db..102b2a0 100644 --- a/lib/librte_hash/rte_hash_crc.h +++ b/lib/librte_hash/rte_hash_crc.h @@ -64,6 +64,22 @@ 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 _mm_crc32_u64(init_val, data); +} + +/** * Use crc32 instruction to perform a hash. * * @param data