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{
    "id": 1315,
    "url": "https://patches.dpdk.org/api/patches/1315/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/1416160760-16087-2-git-send-email-e_zhumabekov@sts.kz/",
    "project": {
        "id": 1,
        "url": "https://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<1416160760-16087-2-git-send-email-e_zhumabekov@sts.kz>",
    "list_archive_url": "https://inbox.dpdk.org/dev/1416160760-16087-2-git-send-email-e_zhumabekov@sts.kz",
    "date": "2014-11-16T17:59:17",
    "name": "[dpdk-dev,v2,1/4] hash: add software CRC32 implementation",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "1617c3ffaf8d5a707e820e027f3dcc9e47f5e816",
    "submitter": {
        "id": 36,
        "url": "https://patches.dpdk.org/api/people/36/?format=api",
        "name": "Yerden Zhumabekov",
        "email": "e_zhumabekov@sts.kz"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/1416160760-16087-2-git-send-email-e_zhumabekov@sts.kz/mbox/",
    "series": [],
    "comments": "https://patches.dpdk.org/api/patches/1315/comments/",
    "check": "pending",
    "checks": "https://patches.dpdk.org/api/patches/1315/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id 48BCF7FE6;\n\tSun, 16 Nov 2014 18:49:09 +0100 (CET)",
            "from mgw.gov.kz (mgw.gov.kz [89.218.88.242])\n\tby dpdk.org (Postfix) with ESMTP id 37F6B7FEE\n\tfor <dev@dpdk.org>; Sun, 16 Nov 2014 18:48:52 +0100 (CET)",
            "from mgw.gov.kz (mx.ctsat.kz [178.89.4.95])\n\tby mgw.gov.kz  with ESMTP id sAGHwupd029782-sAGHwupg029782\n\t(version=TLSv1.0 cipher=AES128-SHA bits=128 verify=NO);\n\tSun, 16 Nov 2014 23:58:57 +0600",
            "from EXCASHUB2.rgp.local (192.168.40.53) by EdgeForefront.rgp.local\n\t(192.168.40.59) with Microsoft SMTP Server (TLS) id 14.2.247.3;\n\tSun, 16 Nov 2014 23:58:47 +0600",
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        ],
        "From": "Yerden Zhumabekov <e_zhumabekov@sts.kz>",
        "To": "<dev@dpdk.org>",
        "Date": "Sun, 16 Nov 2014 23:59:17 +0600",
        "Message-ID": "<1416160760-16087-2-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",
        "Content-Type": "text/plain",
        "X-Originating-IP": "[192.168.59.10]",
        "X-FEAS-SYSTEM-WL": "e_zhumabekov@sts.kz",
        "Subject": "[dpdk-dev] [PATCH v2 1/4] hash: add software CRC32 implementation",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <dev.dpdk.org>",
        "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://dpdk.org/ml/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Add lookup table for CRC32 algorithm, crc32c_1word() and\ncrc32c_2words() functions returning hash of 32-bit and\n64-bit operand.\n\nSigned-off-by: Yerden Zhumabekov <e_zhumabekov@sts.kz>\n---\n lib/librte_hash/rte_hash_crc.h |  105 ++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 105 insertions(+)",
    "diff": "diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h\nindex b48b0db..3c368c5 100644\n--- a/lib/librte_hash/rte_hash_crc.h\n+++ b/lib/librte_hash/rte_hash_crc.h\n@@ -47,6 +47,111 @@ extern \"C\" {\n #include <stdint.h>\n #include <nmmintrin.h>\n \n+/* Lookup table for software implementation of CRC32C */\n+static const uint32_t crc32c_table[256] = {\n+\t0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,\n+\t0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,\n+\t0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,\n+\t0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,\n+\t0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,\n+\t0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,\n+\t0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,\n+\t0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,\n+\t0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,\n+\t0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,\n+\t0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,\n+\t0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,\n+\t0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,\n+\t0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,\n+\t0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,\n+\t0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,\n+\t0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,\n+\t0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,\n+\t0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,\n+\t0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,\n+\t0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,\n+\t0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,\n+\t0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,\n+\t0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,\n+\t0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,\n+\t0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,\n+\t0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,\n+\t0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,\n+\t0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,\n+\t0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,\n+\t0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,\n+\t0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,\n+\t0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,\n+\t0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,\n+\t0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,\n+\t0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,\n+\t0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,\n+\t0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,\n+\t0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,\n+\t0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,\n+\t0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,\n+\t0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,\n+\t0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,\n+\t0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,\n+\t0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,\n+\t0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,\n+\t0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,\n+\t0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,\n+\t0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,\n+\t0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,\n+\t0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,\n+\t0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,\n+\t0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,\n+\t0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,\n+\t0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,\n+\t0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,\n+\t0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,\n+\t0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,\n+\t0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,\n+\t0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,\n+\t0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,\n+\t0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,\n+\t0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,\n+\t0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L\n+};\n+\n+#define CRC32C_UPD(crc, byte) \\\n+\t(crc = crc32c_table[((crc) ^ (byte)) & 0xFFL] ^ ((crc) >> 8))\n+\n+static inline uint32_t\n+crc32c_1word(uint32_t data, uint32_t init_val)\n+{\n+\tunion {\n+\t\tuint32_t u32;\n+\t\tuint8_t u8[4];\n+\t} d;\n+\td.u32 = data;\n+\tCRC32C_UPD(init_val, d.u8[0]);\n+\tCRC32C_UPD(init_val, d.u8[1]);\n+\tCRC32C_UPD(init_val, d.u8[2]);\n+\tCRC32C_UPD(init_val, d.u8[3]);\n+\treturn init_val;\n+}\n+\n+static inline uint32_t\n+crc32c_2words(uint64_t data, uint32_t init_val)\n+{\n+\tunion {\n+\t\tuint64_t u64;\n+\t\tuint8_t u8[8];\n+\t} d;\n+\td.u64 = data;\n+\tCRC32C_UPD(init_val, d.u8[0]);\n+\tCRC32C_UPD(init_val, d.u8[1]);\n+\tCRC32C_UPD(init_val, d.u8[2]);\n+\tCRC32C_UPD(init_val, d.u8[3]);\n+\tCRC32C_UPD(init_val, d.u8[4]);\n+\tCRC32C_UPD(init_val, d.u8[5]);\n+\tCRC32C_UPD(init_val, d.u8[6]);\n+\tCRC32C_UPD(init_val, d.u8[7]);\n+\treturn init_val;\n+}\n+\n /**\n  * Use single crc32 instruction to perform a hash on a 4 byte value.\n  *\n",
    "prefixes": [
        "dpdk-dev",
        "v2",
        "1/4"
    ]
}