From patchwork Fri Nov 20 13:00:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weqaar Janjua X-Patchwork-Id: 11920223 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 105A0C56202 for ; Fri, 20 Nov 2020 13:00:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A61D62224C for ; Fri, 20 Nov 2020 13:00:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="FUE6BYKW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727479AbgKTNAp (ORCPT ); Fri, 20 Nov 2020 08:00:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726559AbgKTNAo (ORCPT ); Fri, 20 Nov 2020 08:00:44 -0500 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C992C0613CF; Fri, 20 Nov 2020 05:00:44 -0800 (PST) Received: by mail-wr1-x42b.google.com with SMTP id o15so9958979wru.6; Fri, 20 Nov 2020 05:00:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=YrVsl77v5RNxUEy41ZltptpT1I1IuhiAow2CCvYm/oU=; b=FUE6BYKWeAe99FY0tXXcBVFU8+15IPNBEimyfGdMReEdhx0NtZH8izu2WPfj+KO1GL vfEYrLwK20jSaU+1R9CuI3f2SavbO8BC6iUHu7Vr9MdapEbWxkS/U2+rmaXc+IomToUR kK4UgMnjdWquuIw6ZrrVUON04MWqpLScvQpqaHFHp8ITxrv9eM0sfz82d6zcM3k9MSBP TAwsfSZ6fXff2wIxVbAIqZ31VKnv7YiHhQG1jg4o7+YXVzIGrOEG9TN3Gu9o1KLik3Rr wMqAQjRMTh3QsjxkEQOcdzX4n05MHM1hH8cGkxsmeHSPMavlMKkrRMzKwH8jFhc6twRj w3rA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=YrVsl77v5RNxUEy41ZltptpT1I1IuhiAow2CCvYm/oU=; b=QHypDm7Lqm/lfVExtNKYIQhLoXqONB9r711L5TYK4yIayAiHOpDZwRqghusfR9Dkd/ 64hN9i0CdNZS5auRf+SSQPRXutOwMZ2wmX8H048KPg+DmJ5O0eVQFJGC+7Z2pFHHhW9s k7U0cg8QGbyXB+TCkIRbHpdvyu/HRfbwxeSVWAS0FO8FUq1dXP6nOMWp124ONAnP/T9B Nq76t+Our9AziDncnWj/3G9jR8pJngXVjxUJAilk7Wo0Ym9QD1Q3UhmM1tT5s4SqfcQA VBBqBPrJ1K36gyxyocSG1h69cro7FWi301h7UbPD20dQsTkRwxhyoLpORyH51BO1ZkZf r93g== X-Gm-Message-State: AOAM532iuUDB7Ibq8tscm/36Rnaz53orrZpaSo6oF/+2dcKdmBiyTzb2 nOUModdtXt2jIGgjHD0YNwtENcJh0+EXZNmGvgQ= X-Google-Smtp-Source: ABdhPJxAZWJtipjhs2JU9ZAazaiRGPpeDpEw6BxxDAR42F0jPu4BnxvVoNU6ubheBSdXvghn6f+eXQ== X-Received: by 2002:adf:814f:: with SMTP id 73mr15670252wrm.174.1605877242467; Fri, 20 Nov 2020 05:00:42 -0800 (PST) Received: from kernel-dev.chello.ie ([80.111.136.190]) by smtp.gmail.com with ESMTPSA id b8sm4074238wmj.9.2020.11.20.05.00.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Nov 2020 05:00:41 -0800 (PST) From: Weqaar Janjua X-Google-Original-From: Weqaar Janjua To: bpf@vger.kernel.org, netdev@vger.kernel.org, daniel@iogearbox.net, ast@kernel.org, magnus.karlsson@gmail.com, bjorn.topel@intel.com Cc: Weqaar Janjua , shuah@kernel.org, skhan@linuxfoundation.org, linux-kselftest@vger.kernel.org, anders.roxell@linaro.org, jonathan.lemon@gmail.com Subject: [PATCH bpf-next v2 0/5] selftests/bpf: xsk selftests Date: Fri, 20 Nov 2020 13:00:21 +0000 Message-Id: <20201120130026.19029-1-weqaar.a.janjua@intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This patch set adds AF_XDP selftests based on veth to selftests/bpf. # Topology: # --------- # ----------- # _ | Process | _ # / ----------- \ # / | \ # / | \ # ----------- | ----------- # | Thread1 | | | Thread2 | # ----------- | ----------- # | | | # ----------- | ----------- # | xskX | | | xskY | # ----------- | ----------- # | | | # ----------- | ---------- # | vethX | --------- | vethY | # ----------- peer ---------- # | | | # namespaceX | namespaceY These selftests test AF_XDP SKB and Native/DRV modes using veth Virtual Ethernet interfaces. The test program contains two threads, each thread is single socket with a unique UMEM. It validates in-order packet delivery and packet content by sending packets to each other. Prerequisites setup by script test_xsk_prerequisites.sh: Set up veth interfaces as per the topology shown ^^: * setup two veth interfaces and one namespace ** veth in root namespace ** veth in af_xdp namespace ** namespace af_xdp * create a spec file veth.spec that includes this run-time configuration that is read by test scripts - filenames prefixed with test_xsk_ *** xxxx and yyyy are randomly generated 4 digit numbers used to avoid conflict with any existing interface The following tests are provided: 1. AF_XDP SKB mode Generic mode XDP is driver independent, used when the driver does not have support for XDP. Works on any netdevice using sockets and generic XDP path. XDP hook from netif_receive_skb(). a. nopoll - soft-irq processing b. poll - using poll() syscall c. Socket Teardown Create a Tx and a Rx socket, Tx from one socket, Rx on another. Destroy both sockets, then repeat multiple times. Only nopoll mode is used d. Bi-directional Sockets Configure sockets as bi-directional tx/rx sockets, sets up fill and completion rings on each socket, tx/rx in both directions. Only nopoll mode is used 2. AF_XDP DRV/Native mode Works on any netdevice with XDP_REDIRECT support, driver dependent. Processes packets before SKB allocation. Provides better performance than SKB. Driver hook available just after DMA of buffer descriptor. a. nopoll b. poll c. Socket Teardown d. Bi-directional Sockets * Only copy mode is supported because veth does not currently support zero-copy mode Total tests: 8 Flow: * Single process spawns two threads: Tx and Rx * Each of these two threads attach to a veth interface within their assigned namespaces * Each thread creates one AF_XDP socket connected to a unique umem for each veth interface * Tx thread transmits 10k packets from veth to veth * Rx thread verifies if all 10k packets were received and delivered in-order, and have the right content v2 changes: * Move selftests/xsk to selftests/bpf * Remove Makefiles under selftests/xsk, and utilize selftests/bpf/Makefile Structure of the patch set: Patch 1: This patch adds XSK Selftests framework under selftests/bpf Patch 2: Adds tests: SKB poll and nopoll mode, and mac-ip-udp debug Patch 3: Adds tests: DRV poll and nopoll mode Patch 4: Adds tests: SKB and DRV Socket Teardown Patch 5: Adds tests: SKB and DRV Bi-directional Sockets Thanks: Weqaar Weqaar Janjua (5): selftests/bpf: xsk selftests framework selftests/bpf: xsk selftests - SKB POLL, NOPOLL selftests/bpf: xsk selftests - DRV POLL, NOPOLL selftests/bpf: xsk selftests - Socket Teardown - SKB, DRV selftests/bpf: xsk selftests - Bi-directional Sockets - SKB, DRV tools/testing/selftests/bpf/Makefile | 15 +- .../bpf/test_xsk_drv_bidirectional.sh | 23 + .../selftests/bpf/test_xsk_drv_nopoll.sh | 20 + .../selftests/bpf/test_xsk_drv_poll.sh | 20 + .../selftests/bpf/test_xsk_drv_teardown.sh | 20 + .../selftests/bpf/test_xsk_prerequisites.sh | 127 ++ .../bpf/test_xsk_skb_bidirectional.sh | 20 + .../selftests/bpf/test_xsk_skb_nopoll.sh | 20 + .../selftests/bpf/test_xsk_skb_poll.sh | 20 + .../selftests/bpf/test_xsk_skb_teardown.sh | 20 + tools/testing/selftests/bpf/xdpxceiver.c | 1056 +++++++++++++++++ tools/testing/selftests/bpf/xdpxceiver.h | 158 +++ tools/testing/selftests/bpf/xsk_env.sh | 28 + tools/testing/selftests/bpf/xsk_prereqs.sh | 119 ++ 14 files changed, 1664 insertions(+), 2 deletions(-) create mode 100755 tools/testing/selftests/bpf/test_xsk_drv_bidirectional.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_drv_nopoll.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_drv_poll.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_drv_teardown.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_prerequisites.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_skb_bidirectional.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_skb_nopoll.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_skb_poll.sh create mode 100755 tools/testing/selftests/bpf/test_xsk_skb_teardown.sh create mode 100644 tools/testing/selftests/bpf/xdpxceiver.c create mode 100644 tools/testing/selftests/bpf/xdpxceiver.h create mode 100755 tools/testing/selftests/bpf/xsk_env.sh create mode 100755 tools/testing/selftests/bpf/xsk_prereqs.sh