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GET /api/patches/66751/?format=api
http://patches.dpdk.org/api/patches/66751/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/1584407863-774-7-git-send-email-phil.yang@arm.com/", "project": { "id": 1, "url": "http://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": "<1584407863-774-7-git-send-email-phil.yang@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1584407863-774-7-git-send-email-phil.yang@arm.com", "date": "2020-03-17T01:17:37", "name": "[v3,06/12] ipsec: optimize with c11 atomic for sa outbound sqn update", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "109c4431b733adfdfa6feecbfe66f2173326be64", "submitter": { "id": 833, "url": "http://patches.dpdk.org/api/people/833/?format=api", "name": "Phil Yang", "email": "phil.yang@arm.com" }, "delegate": { "id": 1, "url": "http://patches.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/1584407863-774-7-git-send-email-phil.yang@arm.com/mbox/", "series": [ { "id": 8948, "url": "http://patches.dpdk.org/api/series/8948/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=8948", "date": "2020-03-17T01:17:31", "name": "generic rte atomic APIs deprecate proposal", "version": 3, "mbox": "http://patches.dpdk.org/series/8948/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/66751/comments/", "check": "fail", "checks": "http://patches.dpdk.org/api/patches/66751/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 dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 3DFF5A0559;\n\tTue, 17 Mar 2020 02:19:24 +0100 (CET)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id C79AD1C0CF;\n\tTue, 17 Mar 2020 02:18:51 +0100 (CET)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by dpdk.org (Postfix) with ESMTP id C6E471C0D5\n for <dev@dpdk.org>; Tue, 17 Mar 2020 02:18:49 +0100 (CET)", "from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])\n by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 51ED31FB;\n Mon, 16 Mar 2020 18:18:49 -0700 (PDT)", "from phil-VirtualBox.shanghai.arm.com\n (phil-VirtualBox.shanghai.arm.com [10.169.108.137])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 92CC43F52E;\n Mon, 16 Mar 2020 18:18:45 -0700 (PDT)" ], "From": "Phil Yang <phil.yang@arm.com>", "To": "thomas@monjalon.net, harry.van.haaren@intel.com,\n konstantin.ananyev@intel.com, stephen@networkplumber.org,\n maxime.coquelin@redhat.com, dev@dpdk.org", "Cc": "david.marchand@redhat.com, jerinj@marvell.com, hemant.agrawal@nxp.com,\n Honnappa.Nagarahalli@arm.com, gavin.hu@arm.com, ruifeng.wang@arm.com,\n joyce.kong@arm.com, nd@arm.com", "Date": "Tue, 17 Mar 2020 09:17:37 +0800", "Message-Id": "<1584407863-774-7-git-send-email-phil.yang@arm.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1584407863-774-1-git-send-email-phil.yang@arm.com>", "References": "<1583999071-22872-1-git-send-email-phil.yang@arm.com>\n <1584407863-774-1-git-send-email-phil.yang@arm.com>", "Subject": "[dpdk-dev] [PATCH v3 06/12] ipsec: optimize with c11 atomic for sa\n\toutbound sqn update", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "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", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "For SA outbound packets, rte_atomic64_add_return is used to generate\nSQN atomically. This introduced an unnecessary full barrier by calling\nthe '__sync' builtin implemented rte_atomic_XX API on aarch64. This\npatch optimized it with c11 atomic and eliminated the expensive barrier\nfor aarch64.\n\nSigned-off-by: Phil Yang <phil.yang@arm.com>\nReviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>\nReviewed-by: Gavin Hu <gavin.hu@arm.com>\n---\n lib/librte_ipsec/ipsec_sqn.h | 3 ++-\n lib/librte_ipsec/sa.h | 2 +-\n 2 files changed, 3 insertions(+), 2 deletions(-)", "diff": "diff --git a/lib/librte_ipsec/ipsec_sqn.h b/lib/librte_ipsec/ipsec_sqn.h\nindex 0c2f76a..e884af7 100644\n--- a/lib/librte_ipsec/ipsec_sqn.h\n+++ b/lib/librte_ipsec/ipsec_sqn.h\n@@ -128,7 +128,8 @@ esn_outb_update_sqn(struct rte_ipsec_sa *sa, uint32_t *num)\n \n \tn = *num;\n \tif (SQN_ATOMIC(sa))\n-\t\tsqn = (uint64_t)rte_atomic64_add_return(&sa->sqn.outb.atom, n);\n+\t\tsqn = __atomic_add_fetch(&sa->sqn.outb.atom, n,\n+\t\t\t__ATOMIC_RELAXED);\n \telse {\n \t\tsqn = sa->sqn.outb.raw + n;\n \t\tsa->sqn.outb.raw = sqn;\ndiff --git a/lib/librte_ipsec/sa.h b/lib/librte_ipsec/sa.h\nindex d22451b..cab9a2e 100644\n--- a/lib/librte_ipsec/sa.h\n+++ b/lib/librte_ipsec/sa.h\n@@ -120,7 +120,7 @@ struct rte_ipsec_sa {\n \t */\n \tunion {\n \t\tunion {\n-\t\t\trte_atomic64_t atom;\n+\t\t\tuint64_t atom;\n \t\t\tuint64_t raw;\n \t\t} outb;\n \t\tstruct {\n", "prefixes": [ "v3", "06/12" ] }{ "id": 66751, "url": "