From patchwork Fri Oct 27 18:46:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Xu X-Patchwork-Id: 739149 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B5ABC25B70 for ; Fri, 27 Oct 2023 18:47:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346393AbjJ0SrN (ORCPT ); Fri, 27 Oct 2023 14:47:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346571AbjJ0Sqz (ORCPT ); Fri, 27 Oct 2023 14:46:55 -0400 Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49004128; Fri, 27 Oct 2023 11:46:48 -0700 (PDT) Received: from compute7.internal (compute7.nyi.internal [10.202.2.48]) by mailout.nyi.internal (Postfix) with ESMTP id 8FA965C0225; Fri, 27 Oct 2023 14:46:47 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute7.internal (MEProxy); Fri, 27 Oct 2023 14:46:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dxuuu.xyz; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm2; t=1698432407; x= 1698518807; bh=2fjiakLITSCXGyl83edKCDEBKH//aAV9purn7c7fwtY=; b=B zISbJzdokjCVKc7AaNFqcoQ4CyM1uafVunTRXmeK/8SkZGJYHuIh3gGYjYvelhia 8FAks34jTt9U9RatVynlmEMQN/2kN1DtFeaYkmMs4Y1/TOBk03leFmd20ezAi3tf 8nsyW7UCooG0IJm3iyFsBHHbWVU+FooruSGAEskYu54TttWAT4/CMSJYK9HyoMwM o7yMgqBdnQKOXfM/7qb6c2AG3PzuvMU/DqD+zTlTKDQNTu3UQhQXYwYyafOa+/lp DYs0vYJMNPXs2eYjcdvQlFmyPoNuOxoabGjAcJYemYWsOoJW+/1YYkEvf72SLzDV KIdlHZ2p8tsIUCa/9URKg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t=1698432407; x= 1698518807; bh=2fjiakLITSCXGyl83edKCDEBKH//aAV9purn7c7fwtY=; b=K 9RaMJh603U0B8Q69kyC5341nRwbxYA9Nybte5ysHVXdILhCt0FPX5F28sRfPTFqs ISw6GWa1I+V5Ue54wE0Kg+g+naF+LD3ROAqO3SJug/qc/bUhhl+/9EYSwZhQyxkH HIxOys7H+PY587lYNWGw3hvC3/zvNJlGajrooOzHXPNxbrrrlb4FC40vV9UV+Cgo DY/75ZBXO8MQcNHW60a0Xnpjv9tA0RP4nqCWMtNLfNoF5v73CcaB3pwqBI1Q2Aku 05Y9m9Lr8brTQvrC3zSB7SnxCT/Bc6V4unoTRbN7eJniEpW1bgoowDGjvKrF1pEh qbWqJJ3hvq5lcmLY/8DWA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrleeggddufedtucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucgfrhhlucfvnfffucdljedtmdenucfjughrpefhvf evufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeffrghnihgvlhcuighuuceo ugiguhesugiguhhuuhdrgiihiieqnecuggftrfgrthhtvghrnhepgfefgfegjefhudeike dvueetffelieefuedvhfehjeeljeejkefgffeghfdttdetnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepugiguhesugiguhhuuhdrgiihii X-ME-Proxy: Feedback-ID: i6a694271:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 27 Oct 2023 14:46:46 -0400 (EDT) From: Daniel Xu To: andrii@kernel.org, ast@kernel.org, shuah@kernel.org, daniel@iogearbox.net, steffen.klassert@secunet.com, antony.antony@secunet.com Cc: martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, mykolal@fb.com, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, devel@linux-ipsec.org Subject: [RFC bpf-next 3/6] bpf: selftests: test_tunnel: Mount bpffs if necessary Date: Fri, 27 Oct 2023 12:46:19 -0600 Message-ID: X-Mailer: git-send-email 2.42.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Previously, if bpffs was not already mounted, then the test suite would fail during object file pinning steps. Fix by mounting bpffs if necessary. Signed-off-by: Daniel Xu --- tools/testing/selftests/bpf/test_tunnel.sh | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/test_tunnel.sh b/tools/testing/selftests/bpf/test_tunnel.sh index 85ba39992461..dd3c79129e87 100755 --- a/tools/testing/selftests/bpf/test_tunnel.sh +++ b/tools/testing/selftests/bpf/test_tunnel.sh @@ -46,7 +46,8 @@ # 6) Forward the packet to the overlay tnl dev BPF_FILE="test_tunnel_kern.bpf.o" -BPF_PIN_TUNNEL_DIR="/sys/fs/bpf/tc/tunnel" +BPF_FS="/sys/fs/bpf" +BPF_PIN_TUNNEL_DIR="${BPF_FS}/tc/tunnel" PING_ARG="-c 3 -w 10 -q" ret=0 GREEN='\033[0;92m' @@ -668,10 +669,20 @@ check_err() fi } +mount_bpffs() +{ + if ! mount | grep "bpf on /sys/fs/bpf" &>/dev/null; then + mount -t bpf bpf "$BPF_FS" + fi +} + bpf_tunnel_test() { local errors=0 + echo "Mounting bpffs..." + mount_bpffs + echo "Testing GRE tunnel..." test_gre errors=$(( $errors + $? )) From patchwork Fri Oct 27 18:46:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Xu X-Patchwork-Id: 739148 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03D8BC25B48 for ; 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Fri, 27 Oct 2023 14:46:48 -0400 (EDT) From: Daniel Xu To: ast@kernel.org, andrii@kernel.org, shuah@kernel.org, daniel@iogearbox.net, steffen.klassert@secunet.com, antony.antony@secunet.com Cc: mykolal@fb.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, devel@linux-ipsec.org Subject: [RFC bpf-next 5/6] bpf: selftests: test_tunnel: Disable CO-RE relocations Date: Fri, 27 Oct 2023 12:46:21 -0600 Message-ID: <111a64c3e6ccda6b8a2826491715d4e8a645e384.1698431765.git.dxu@dxuuu.xyz> X-Mailer: git-send-email 2.42.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Switching to vmlinux.h definitions seems to make the verifier very unhappy with bitfield accesses. The error is: ; md.u.md2.dir = direction; 33: (69) r1 = *(u16 *)(r2 +11) misaligned stack access off (0x0; 0x0)+-64+11 size 2 It looks like disabling CO-RE relocations seem to make the error go away. Signed-off-by: Daniel Xu --- tools/testing/selftests/bpf/progs/test_tunnel_kern.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c index 3065a716544d..ec7e04e012ae 100644 --- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c +++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c @@ -6,6 +6,7 @@ * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ +#define BPF_NO_PRESERVE_ACCESS_INDEX #include "vmlinux.h" #include #include