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[34.150.132.193]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6c52041877esm11909666d6.123.2024.09.05.16.16.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Sep 2024 16:16:57 -0700 (PDT) From: Willem de Bruijn To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, edumazet@google.com, pabeni@redhat.com, ncardwell@google.com, shuah@kernel.org, linux-kselftest@vger.kernel.org, fw@strlen.de, Willem de Bruijn Subject: [PATCH net-next v2 1/2] selftests: support interpreted scripts with ksft_runner.sh Date: Thu, 5 Sep 2024 19:15:51 -0400 Message-ID: <20240905231653.2427327-2-willemdebruijn.kernel@gmail.com> X-Mailer: git-send-email 2.46.0.469.g59c65b2a67-goog In-Reply-To: <20240905231653.2427327-1-willemdebruijn.kernel@gmail.com> References: <20240905231653.2427327-1-willemdebruijn.kernel@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Willem de Bruijn Support testcases that are themselves not executable, but need an interpreter to run them. If a test file is not executable, but an executable file ksft_runner.sh exists in the TARGET dir, kselftest will run ./ksft_runner.sh ./$BASENAME_TEST Packetdrill may add hundreds of packetdrill scripts for testing. These scripts must be passed to the packetdrill process. Have kselftest run each test directly, as it already solves common runner requirements like parallel execution and isolation (netns). A previous RFC added a wrapper in between, which would have to reimplement such functionality. Link: https://lore.kernel.org/netdev/66d4d97a4cac_3df182941a@willemb.c.googlers.com.notmuch/T/ Signed-off-by: Willem de Bruijn --- tools/testing/selftests/kselftest/runner.sh | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 74954f6a8f94b..2c3c58e65a419 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -111,8 +111,11 @@ run_one() stdbuf="/usr/bin/stdbuf --output=L " fi eval kselftest_cmd_args="\$${kselftest_cmd_args_ref:-}" - cmd="$stdbuf ./$BASENAME_TEST $kselftest_cmd_args" - if [ ! -x "$TEST" ]; then + if [ -x "$TEST" ]; then + cmd="$stdbuf ./$BASENAME_TEST $kselftest_cmd_args" + elif [ -x "./ksft_runner.sh" ]; then + cmd="$stdbuf ./ksft_runner.sh ./$BASENAME_TEST" + else echo "# Warning: file $TEST is not executable" if [ $(head -n 1 "$TEST" | cut -c -2) = "#!" ] From patchwork Thu Sep 5 23:15:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Willem de Bruijn X-Patchwork-Id: 13793084 Received: from mail-qv1-f50.google.com (mail-qv1-f50.google.com [209.85.219.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8E6901AF4D5; Thu, 5 Sep 2024 23:17:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725578222; cv=none; b=fMEYQo9M6AyF6inGY23OR1TJRREgybusji5N0bxSB+4W4mQ8bkejYkvKR/WDRuFZHlQDGS+SyOz88lXhxyqLFSkGh0t1TKKpKOZacNu/KKcr+qLZwgPHV4cAcaILYuGzlnkecX4QQQe3ixJZ8zM9p2PYm2hNL4RQMDyLuoIdngw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725578222; c=relaxed/simple; bh=FZ6fJN+3iUEsMqpJ/xOa3lIaPsqqBPew10xWwPy1E6I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RBTVfoEgjPD+FZFbog5WYVZ32B+iLbw4HrsztIqY6OiDQr5l2BIYlqgbY//SAhoHb2filoSOlG7QiNJdx6oBxmFx6cThklK5SoWkAWqkUMlkakyO0AHUhsFBKHIydJOBn/5+b066PrZNl3GuewZ49RJARgJ6AfNCo7WSviZlGls= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=J+AyBq0K; arc=none smtp.client-ip=209.85.219.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="J+AyBq0K" Received: by mail-qv1-f50.google.com with SMTP id 6a1803df08f44-6c34c02ff1cso8512146d6.2; Thu, 05 Sep 2024 16:17:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1725578219; x=1726183019; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wPvYcjH1wnLuHylxUfM1sSs2jWLBkTdxUoUKIFvkCSk=; b=J+AyBq0K0SBG/wpuKGfzXFty1lEmpUJ/qdORzgR/LyFf5KnwizueLtI9MY7QowkM4L itsPSeXMwL5SamWnzE2Xi/7pcJPZRykEwySH7b74ougsJdsaBjapTI0ZDXTAGsr6KglU cEVnFwDSLpf/Ft8Gt797/VekU4bo1rwth2BoAaYUrYGMYzb/iDQOYpDWS5KF1+NogFBj KtFGnbmKVBxCSlod+9JhRsyvCqBo86I2v3HcDcY9Ju4YbC1I3anmm7UxnWWmHGXMZnR3 tGX//N3pE5ZH57hMKxVgl2B4ykJTXNxWCD5SpizkfBk2F4pzyNDxdg6zBZwZIgRrfFf+ aflw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725578219; x=1726183019; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wPvYcjH1wnLuHylxUfM1sSs2jWLBkTdxUoUKIFvkCSk=; b=AvP7TLpa//t+FS0/7LcqDIGP2g6DI1HYG1dMnLqZMlNrt8CZI55qHzJDmgBsdY4K6Z TWCaLOfWYVaXkDiiUJbdlJH86wMGbIA0ZJsCCP0y5O3SfVUORWrV+2CXtefuIE/Ayy25 Ubzv/3tbSmnWWnBWq2eaSAIC0FWWXcQpHSaWYWBTtxVbjhWQrSKRlFsPCwclgQrZF3Vg iZRphbdheKdufudXPrdsWGTQyRyYghNP2j2pE3v+FQoTgo1EH37yX0DoDE5MxJLCKMhU +tbAHjWM6/uNSB81paYCPbjLjhmzI4acYgx6JtX3nYFV4WkN1ncou3j3g6dGXrtRbnNw fhqQ== X-Forwarded-Encrypted: i=1; AJvYcCU7fn7hZiGX0OAFaIuhebidoZLrDph9vAM2aK6JrwVgWpk5fcWz0suZ7ciNgqhieP+LprWXAhq1ORtPpcJoJ7g=@vger.kernel.org X-Gm-Message-State: AOJu0Yy05N3WA7Yef6VBGoL+7yX9SeclF4mFAFXd8uurQageodygwty5 vPCRz6rs94zB16psfX3Hsjka+44h8kvMW19QJN1JwguF7pM5Mmp2P3TMLQ== X-Google-Smtp-Source: AGHT+IHhFYZtbUWAWugIHNQdOQjFTkTUN9mZ1agmiQiVLdTKihD+ZybTXw1vmj6r+xvdEFSKTFzDTQ== X-Received: by 2002:a05:6214:2f86:b0:6c3:6b3c:8ae2 with SMTP id 6a1803df08f44-6c52850bbe7mr14999166d6.33.1725578219084; Thu, 05 Sep 2024 16:16:59 -0700 (PDT) Received: from willemb.c.googlers.com.com (193.132.150.34.bc.googleusercontent.com. [34.150.132.193]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6c52041877esm11909666d6.123.2024.09.05.16.16.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Sep 2024 16:16:58 -0700 (PDT) From: Willem de Bruijn To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, edumazet@google.com, pabeni@redhat.com, ncardwell@google.com, shuah@kernel.org, linux-kselftest@vger.kernel.org, fw@strlen.de, Willem de Bruijn Subject: [PATCH net-next v2 2/2] selftests/net: integrate packetdrill with ksft Date: Thu, 5 Sep 2024 19:15:52 -0400 Message-ID: <20240905231653.2427327-3-willemdebruijn.kernel@gmail.com> X-Mailer: git-send-email 2.46.0.469.g59c65b2a67-goog In-Reply-To: <20240905231653.2427327-1-willemdebruijn.kernel@gmail.com> References: <20240905231653.2427327-1-willemdebruijn.kernel@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Willem de Bruijn Lay the groundwork to import into kselftests the over 150 packetdrill TCP/IP conformance tests on github.com/google/packetdrill. Florian recently added support for packetdrill tests in nf_conntrack, in commit a8a388c2aae49 ("selftests: netfilter: add packetdrill based conntrack tests"). This patch takes a slightly different approach. It relies on ksft_runner.sh to run every *.pkt file in the directory. Any future imports of packetdrill tests should require no additional coding. Just add the *.pkt files. Initially import only two features/directories from github. One with a single script, and one with two. This was the only reason to pick tcp/inq and tcp/md5. The path replaces the directory hierarchy in github with a flat space of files: $(subst /,_,$(wildcard tcp/**/*.pkt)). This is the most straightforward option to integrate with kselftests. The Linked thread reviewed two ways to maintain the hierarchy: TEST_PROGS_RECURSE and PRESERVE_TEST_DIRS. But both introduce significant changes to kselftest infra and with that risk to existing tests. Implementation notes: - restore alphabetical order when adding the new directory to tools/testing/selftests/Makefile - imported *.pkt files and support verbatim from the github project, except for - update `source ./defaults.sh` path (to adjust for flat dir) - add SPDX headers - remove one author statement - Acknowledgment: drop an e (checkpatch) Tested: make -C tools/testing/selftests \ TARGETS=net/packetdrill \ run_tests make -C tools/testing/selftests \ TARGETS=net/packetdrill \ install INSTALL_PATH=$KSFT_INSTALL_PATH # in virtme-ng ./run_kselftest.sh -c net/packetdrill ./run_kselftest.sh -t net/packetdrill:tcp_inq_client.pkt Link: https://lore.kernel.org/netdev/20240827193417.2792223-1-willemdebruijn.kernel@gmail.com/ Signed-off-by: Willem de Bruijn --- Changes: - RFC -> v1 - replace custom runner with ksft_runner.sh (previous patch in series) and ktap_helpers.sh - flatten the github tcp/**/*.pkt directory structure - add config for MD5 dependency - drop unused set_sysctls.py - v1 -> v2 - add missing CONFIGs - (minor) drop obsolete KSELFTEST_PKT_INTERP ref in commit message --- tools/testing/selftests/Makefile | 5 +- .../selftests/net/packetdrill/Makefile | 9 +++ .../testing/selftests/net/packetdrill/config | 5 ++ .../selftests/net/packetdrill/defaults.sh | 63 +++++++++++++++++++ .../selftests/net/packetdrill/ksft_runner.sh | 41 ++++++++++++ .../net/packetdrill/tcp_inq_client.pkt | 51 +++++++++++++++ .../net/packetdrill/tcp_inq_server.pkt | 51 +++++++++++++++ .../tcp_md5_md5-only-on-client-ack.pkt | 28 +++++++++ 8 files changed, 251 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/net/packetdrill/Makefile create mode 100644 tools/testing/selftests/net/packetdrill/config create mode 100755 tools/testing/selftests/net/packetdrill/defaults.sh create mode 100755 tools/testing/selftests/net/packetdrill/ksft_runner.sh create mode 100644 tools/testing/selftests/net/packetdrill/tcp_inq_client.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_inq_server.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_md5_md5-only-on-client-ack.pkt diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index a5f1c0c27dff9..3b7df54773170 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -65,10 +65,11 @@ TARGETS += net/af_unix TARGETS += net/forwarding TARGETS += net/hsr TARGETS += net/mptcp -TARGETS += net/openvswitch -TARGETS += net/tcp_ao TARGETS += net/netfilter +TARGETS += net/openvswitch +TARGETS += net/packetdrill TARGETS += net/rds +TARGETS += net/tcp_ao TARGETS += nsfs TARGETS += perf_events TARGETS += pidfd diff --git a/tools/testing/selftests/net/packetdrill/Makefile b/tools/testing/selftests/net/packetdrill/Makefile new file mode 100644 index 0000000000000..870f7258dc8d7 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 + +TEST_INCLUDES := ksft_runner.sh \ + defaults.sh \ + ../../kselftest/ktap_helpers.sh + +TEST_PROGS := $(wildcard *.pkt) + +include ../../lib.mk diff --git a/tools/testing/selftests/net/packetdrill/config b/tools/testing/selftests/net/packetdrill/config new file mode 100644 index 0000000000000..0d402830f18d8 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/config @@ -0,0 +1,5 @@ +CONFIG_IPV6=y +CONFIG_NET_SCH_FIFO=y +CONFIG_PROC_SYSCTL=y +CONFIG_TCP_MD5SIG=y +CONFIG_TUN=y diff --git a/tools/testing/selftests/net/packetdrill/defaults.sh b/tools/testing/selftests/net/packetdrill/defaults.sh new file mode 100755 index 0000000000000..1095a7b22f44d --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/defaults.sh @@ -0,0 +1,63 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Set standard production config values that relate to TCP behavior. + +# Flush old cached data (fastopen cookies). +ip tcp_metrics flush all > /dev/null 2>&1 + +# TCP min, default, and max receive and send buffer sizes. +sysctl -q net.ipv4.tcp_rmem="4096 540000 $((15*1024*1024))" +sysctl -q net.ipv4.tcp_wmem="4096 $((256*1024)) 4194304" + +# TCP timestamps. +sysctl -q net.ipv4.tcp_timestamps=1 + +# TCP SYN(ACK) retry thresholds +sysctl -q net.ipv4.tcp_syn_retries=5 +sysctl -q net.ipv4.tcp_synack_retries=5 + +# TCP Forward RTO-Recovery, RFC 5682. +sysctl -q net.ipv4.tcp_frto=2 + +# TCP Selective Acknowledgements (SACK) +sysctl -q net.ipv4.tcp_sack=1 + +# TCP Duplicate Selective Acknowledgements (DSACK) +sysctl -q net.ipv4.tcp_dsack=1 + +# TCP FACK (Forward Acknowldgement) +sysctl -q net.ipv4.tcp_fack=0 + +# TCP reordering degree ("dupthresh" threshold for entering Fast Recovery). +sysctl -q net.ipv4.tcp_reordering=3 + +# TCP congestion control. +sysctl -q net.ipv4.tcp_congestion_control=cubic + +# TCP slow start after idle. +sysctl -q net.ipv4.tcp_slow_start_after_idle=0 + +# TCP RACK and TLP. +sysctl -q net.ipv4.tcp_early_retrans=4 net.ipv4.tcp_recovery=1 + +# TCP method for deciding when to defer sending to accumulate big TSO packets. +sysctl -q net.ipv4.tcp_tso_win_divisor=3 + +# TCP Explicit Congestion Notification (ECN) +sysctl -q net.ipv4.tcp_ecn=0 + +sysctl -q net.ipv4.tcp_pacing_ss_ratio=200 +sysctl -q net.ipv4.tcp_pacing_ca_ratio=120 +sysctl -q net.ipv4.tcp_notsent_lowat=4294967295 > /dev/null 2>&1 + +sysctl -q net.ipv4.tcp_fastopen=0x70403 +sysctl -q net.ipv4.tcp_fastopen_key=a1a1a1a1-b2b2b2b2-c3c3c3c3-d4d4d4d4 + +sysctl -q net.ipv4.tcp_syncookies=1 + +# Override the default qdisc on the tun device. +# Many tests fail with timing errors if the default +# is FQ and that paces their flows. +tc qdisc add dev tun0 root pfifo + diff --git a/tools/testing/selftests/net/packetdrill/ksft_runner.sh b/tools/testing/selftests/net/packetdrill/ksft_runner.sh new file mode 100755 index 0000000000000..2f62caccbbbc5 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/ksft_runner.sh @@ -0,0 +1,41 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +source "$(dirname $(realpath $0))/../../kselftest/ktap_helpers.sh" + +readonly ipv4_args=('--ip_version=ipv4 ' + '--local_ip=192.168.0.1 ' + '--gateway_ip=192.168.0.1 ' + '--netmask_ip=255.255.0.0 ' + '--remote_ip=192.0.2.1 ' + '-D CMSG_LEVEL_IP=SOL_IP ' + '-D CMSG_TYPE_RECVERR=IP_RECVERR ') + +readonly ipv6_args=('--ip_version=ipv6 ' + '--mtu=1520 ' + '--local_ip=fd3d:0a0b:17d6::1 ' + '--gateway_ip=fd3d:0a0b:17d6:8888::1 ' + '--remote_ip=fd3d:fa7b:d17d::1 ' + '-D CMSG_LEVEL_IP=SOL_IPV6 ' + '-D CMSG_TYPE_RECVERR=IPV6_RECVERR ') + +if [ $# -ne 1 ]; then + ktap_exit_fail_msg "usage: $0