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GET /api/patches/105058/?format=api
{ "id": 105058, "url": "http://patchwork.dpdk.org/api/patches/105058/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20211210082209.4102794-1-zhengbin.89740@bytedance.com/", "project": { "id": 1, "url": "http://patchwork.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": "<20211210082209.4102794-1-zhengbin.89740@bytedance.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20211210082209.4102794-1-zhengbin.89740@bytedance.com", "date": "2021-12-10T08:22:09", "name": "[v3] net/ixgbe: add vector Rx parameter check", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "3f36a501ee17e0583980dd3eca5ebe1c6feeee71", "submitter": { "id": 2415, "url": "http://patchwork.dpdk.org/api/people/2415/?format=api", "name": "Bin Zheng", "email": "zhengbin.89740@bytedance.com" }, "delegate": { "id": 1540, "url": "http://patchwork.dpdk.org/api/users/1540/?format=api", "username": "qzhan15", "first_name": "Qi", "last_name": "Zhang", "email": "qi.z.zhang@intel.com" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20211210082209.4102794-1-zhengbin.89740@bytedance.com/mbox/", "series": [ { "id": 20905, "url": "http://patchwork.dpdk.org/api/series/20905/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=20905", "date": "2021-12-10T08:22:09", "name": "[v3] net/ixgbe: add vector Rx parameter check", "version": 3, "mbox": "http://patchwork.dpdk.org/series/20905/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/105058/comments/", "check": "success", "checks": "http://patchwork.dpdk.org/api/patches/105058/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 1F80EA0093;\n\tFri, 10 Dec 2021 09:22:19 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 8938840DDB;\n\tFri, 10 Dec 2021 09:22:18 +0100 (CET)", "from mail-pl1-f169.google.com (mail-pl1-f169.google.com\n [209.85.214.169])\n by mails.dpdk.org (Postfix) with ESMTP id DAF5940041\n for <dev@dpdk.org>; Fri, 10 Dec 2021 09:22:17 +0100 (CET)", "by mail-pl1-f169.google.com with SMTP id m24so5768334pls.10\n for <dev@dpdk.org>; Fri, 10 Dec 2021 00:22:17 -0800 (PST)", "from n248-168-070.byted.org. ([121.30.179.132])\n by smtp.gmail.com with ESMTPSA id k18sm2543963pfc.155.2021.12.10.00.22.13\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Fri, 10 Dec 2021 00:22:15 -0800 (PST)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=bytedance-com.20210112.gappssmtp.com; s=20210112;\n h=from:to:cc:subject:date:message-id:in-reply-to:references\n :mime-version:content-transfer-encoding;\n bh=0oZMLKBxkd4XsnLb4SpEx6VFayeO5G7DQJd/FFAEwXo=;\n b=8OHsR0dsNfOCzeJn8ERCV8wfHTxFofrez4gxzBbJ4gwwJU+5e+uhlZIqjJ7WafeOte\n LLmuKom5zLYEOmqKR0drWcNFMRc60gYAL1VY2Bp0yr7ARxOpoRjYGaZ1aoBL0+Lj+iYR\n cLVDusEdAlazWtDIIGiNcCBXISTcP4+9j1Ahu8Go256avb0owwaa8GoNiJAxMe0o2KaN\n uKqBS9GhsFxgeDKotajaabKmI/ortEHxWRyEO41n96qylErOkySe/eK7ZDT6w4PQVSwU\n IxAmQjEeo5GksM5pmSnG6zLRTCEo3T54bai6+uMnqfCIokcXvN5GzxwMDJG3Dih9FyAQ\n oLUg==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20210112;\n h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n :references:mime-version:content-transfer-encoding;\n bh=0oZMLKBxkd4XsnLb4SpEx6VFayeO5G7DQJd/FFAEwXo=;\n b=ff1KFUWPJrWSgU/squ6SZZv8vJrlE+J3kjAJ6vJeEC9WR+VT4CtJACCGVOTqgf1iB/\n ztmsIH5quOenseBkTAo4GkW3KqZPSJI0s+dTIJHosArxJiPdIzKC9wqWv1Tp9wABd0wy\n yaDSnXL/xefj8BTJ08OIg0h1zM1TYiASe7I0BhTW1R8fT26pSWpBlRb8TCvSOSSBImqy\n Xo81qseQHwP5yUHPXTVME6PVDnY3xJlNKj1WT+FL4vhzhH8l+1X9EtYlo4IDaObf6xv/\n 8icnm3ewGlVJytsAtIVAfQ0j/O+d6xVLMDA/y+/W/LwnZycAoZxiFSToCezjRezCR0Ng\n LMKw==", "X-Gm-Message-State": "AOAM531iWbpcw0FBNgiUc318SSkjDU6/jcbSZMCAJI9v4vP7yVjlzmU2\n xh932PhhzOnOZVBbwPat+/9UVBQKmbDXsM+N", "X-Google-Smtp-Source": "\n ABdhPJx/oSfh9oho7SSUF9562jXT9W1T6WHZzJfPVyP4qM93IL9x7BAFJDKIpLVlvWlWaCSjhpTL/w==", "X-Received": "by 2002:a17:903:18d:b0:142:8ab:d11f with SMTP id\n z13-20020a170903018d00b0014208abd11fmr74413340plg.47.1639124536458;\n Fri, 10 Dec 2021 00:22:16 -0800 (PST)", "From": "Bin Zheng <zhengbin.89740@bytedance.com>", "To": "dev@dpdk.org", "Cc": "haiyue.wang@intel.com, liangma@liangbit.com, stable@dpdk.org,\n leyi.rong@intel.com, Bin Zheng <zhengbin.89740@bytedance.com>,\n jia.guo@intel.com", "Subject": "[PATCH v3] net/ixgbe: add vector Rx parameter check", "Date": "Fri, 10 Dec 2021 16:22:09 +0800", "Message-Id": "<20211210082209.4102794-1-zhengbin.89740@bytedance.com>", "X-Mailer": "git-send-email 2.20.1", "In-Reply-To": "<20211202092001.1830481-2-zhengbin.89740@bytedance.com>", "References": "<20211202092001.1830481-2-zhengbin.89740@bytedance.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "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>,\n <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>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "Under the circumstance that `rx_tail` wrap back to zero\nand the advance speed of `rx_tail` is greater than `rxrearm_start`,\n`rx_tail` will catch up with `rxrearm_start` and surpass it.\nThis may cause some mbufs be reused by application.\n\nSo we need to make some restrictions to ensure that\n `rx_tail` will not exceed `rxrearm_start`.\n\ne.g.\n\nRDH: 972 RDT: 991 rxrearm_nb: 991 rxrearm_start: 992 rx_tail: 959\nRDH: 1004 RDT: 1023 rxrearm_nb: 991 rxrearm_start: 0 rx_tail: 991\nRDH: 12 RDT: 31 rxrearm_nb: 991 rxrearm_start: 32 rx_tail: 1023\nRDH: 31 RDT: 63 rxrearm_nb: 960 rxrearm_start: 64 rx_tail: 0\nRDH: 95 RDT: 95 rxrearm_nb: 1016 rxrearm_start: 96 rx_tail: 88\nRDH: 95 RDT: 127 rxrearm_nb: 991 rxrearm_start: 128 rx_tail: 95\n...\nRDH: 908 RDT: 927 rxrearm_nb: 991 rxrearm_start: 928 rx_tail: 895\nRDH: 940 RDT: 959 rxrearm_nb: 991 rxrearm_start: 960 rx_tail: 927\nRDH: 980 RDT: 991 rxrearm_nb: 991 rxrearm_start: 992 rx_tail: 959\nRDH: 991 RDT: 991 rxrearm_nb: 1026 rxrearm_start: 992 rx_tail: 994\n\nwhen `rx_tail` catches up with `rxrearm_start`,\n2(994 - 992) mbufs be reused by application !\n\nBugzilla ID: 882\nFixes: 5a3cca342417 (\"net/ixgbe: fix vector Rx\")\nCc: jia.guo@intel.com\nCc: stable@dpdk.org\n\nSigned-off-by: Bin Zheng <zhengbin.89740@bytedance.com>\n---\n drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c | 11 +++++++++++\n 1 file changed, 11 insertions(+)", "diff": "diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c\nindex 1eed949495..4654d0adec 100644\n--- a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c\n+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c\n@@ -364,6 +364,17 @@ _recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,\n \tuint8_t vlan_flags;\n \tuint16_t udp_p_flag = 0; /* Rx Descriptor UDP header present */\n \n+\t/*\n+\t * Under the circumstance that `rx_tail` wrap back to zero\n+\t * and the advance speed of `rx_tail` is greater than `rxrearm_start`,\n+\t * `rx_tail` will catch up with `rxrearm_start` and surpass it.\n+\t * This may cause some mbufs be reused by application.\n+\t *\n+\t * So we need to make some restrictions to ensure that\n+\t * `rx_tail` will not exceed `rxrearm_start`.\n+\t */\n+\tnb_pkts = RTE_MIN(nb_pkts, RTE_IXGBE_RXQ_REARM_THRESH);\n+\n \t/* nb_pkts has to be floor-aligned to RTE_IXGBE_DESCS_PER_LOOP */\n \tnb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_IXGBE_DESCS_PER_LOOP);\n \n", "prefixes": [ "v3" ] }