From mboxrd@z Thu Jan 1 00:00:00 1970 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 AA262C77B7C for ; Fri, 12 May 2023 18:34:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238555AbjELSeL (ORCPT ); Fri, 12 May 2023 14:34:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238303AbjELSeJ (ORCPT ); Fri, 12 May 2023 14:34:09 -0400 Received: from mail-pf1-x44a.google.com (mail-pf1-x44a.google.com [IPv6:2607:f8b0:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BA45E2 for ; Fri, 12 May 2023 11:33:40 -0700 (PDT) Received: by mail-pf1-x44a.google.com with SMTP id d2e1a72fcca58-643fdfb437aso36935402b3a.0 for ; Fri, 12 May 2023 11:33:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683916416; x=1686508416; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=5+exEN8RF1B40fPaxoi0k2T6E5J3rfhVEZNB9EwpzSM=; b=2ytWwJWpT3Nf+cnrsDcHH5KcIuij7GP+ouRdzIMCILh4WRZNrgSQNN19FSJ6vu+wm/ g0+G/4bQvlOFdtBGD5dHnfuOdk5TdxYByrmDF/2aFlZR2UBLds/mJtqx7rVI/xdWNV8a A1sQZ3OALNJkgExEqH3hNisJlOeCU6VF+0abfQro0LL+7l/tUtTnsvTbjzSn/CFfEHbY JftijlPqjlutp/AJ42j6ITeno9LWWA0lSoxJy/tp7dLa+Ew/jHMGV8EWdRRN483nrDsw 9YTIf9wrfY8U9jS72O3GInOWIoyv2ASsoGVZklk/M7us4MtfGa8fvueuzWf/66l5Ffps ZvDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683916416; x=1686508416; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5+exEN8RF1B40fPaxoi0k2T6E5J3rfhVEZNB9EwpzSM=; b=Tc/0HR57QrgY2cFNuJ4cFkur5cSHXHEAOem/ImjKKZQD/HwFi7C30oLz43u6WLsKv0 JxXJZYHqHUYYWFTM8ZD9C/DWC+jE6Ij7ot2JXaVPj9GDUbQUh3XEFkxe9ffjPPoQgPUz bZw4HbcPEV+983rG00VN8oOXsuoQYpbpEkDdzAnKDytlMhuQTVs7EpnuY7rU25jMypmy qzvCi9466KrqRE24xpQYAMefjlNZm0bpNq8ZqMuQn6Dd43PBAbUOIlvppUUU8ZaV7ecS UKHfmEVP7I9iBpcZ5WGelJkc9mptbrmgre7FLQwnhBCykDTs0zZT+rUkDPQ5+EzWj8iO 3sUA== X-Gm-Message-State: AC+VfDwHZSmP63heSCwuAcuXnc9qFs9cmhXw+D8NHz3Jqwv3+aytsIPb /qZOVw9EVyf/3iL0CKEw+HHR5lw= X-Google-Smtp-Source: ACHHUZ6izS/sXksepkikL2WJhUgl6hDj55lJDgbldJSMaJRr8WAp/vT3O0/iHqJ2+q6vfS70QyzAspA= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:a17:90b:23c8:b0:250:2099:783 with SMTP id md8-20020a17090b23c800b0025020990783mr8403658pjb.2.1683916415913; Fri, 12 May 2023 11:33:35 -0700 (PDT) Date: Fri, 12 May 2023 11:33:34 -0700 In-Reply-To: <20230512152607.992209-14-larysa.zaremba@intel.com> Mime-Version: 1.0 References: <20230512152607.992209-1-larysa.zaremba@intel.com> <20230512152607.992209-14-larysa.zaremba@intel.com> Message-ID: Subject: Re: [PATCH RESEND bpf-next 13/15] selftests/bpf: Allow VLAN packets in xdp_hw_metadata From: Stanislav Fomichev To: Larysa Zaremba Cc: bpf@vger.kernel.org, Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Jakub Kicinski , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Jiri Olsa , Jesse Brandeburg , Tony Nguyen , Anatoly Burakov , Jesper Dangaard Brouer , Alexander Lobakin , Magnus Karlsson , Maryam Tahhan , xdp-hints@xdp-project.net, netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/12, Larysa Zaremba wrote: > Make VLAN c-tag and s-tag XDP hint testing more convenient > by not skipping VLAN-ed packets. > > Allow both 802.1ad and 802.1Q headers. Can we also extend non-hw test? That should require adding metadata handlers to veth to extract relevant parts from skb + update ip link commands to add vlan id. Should be relatively easy to do? > > Signed-off-by: Larysa Zaremba > --- > tools/testing/selftests/bpf/progs/xdp_hw_metadata.c | 9 ++++++++- > tools/testing/selftests/bpf/xdp_metadata.h | 8 ++++++++ > 2 files changed, 16 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c > index b2dfd7066c6e..f95f82a8b449 100644 > --- a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c > +++ b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c > @@ -26,15 +26,22 @@ int rx(struct xdp_md *ctx) > { > void *data, *data_meta, *data_end; > struct ipv6hdr *ip6h = NULL; > - struct ethhdr *eth = NULL; > struct udphdr *udp = NULL; > struct iphdr *iph = NULL; > struct xdp_meta *meta; > + struct ethhdr *eth; > int err; > > data = (void *)(long)ctx->data; > data_end = (void *)(long)ctx->data_end; > eth = data; > + > + if (eth + 1 < data_end && eth->h_proto == bpf_htons(ETH_P_8021AD)) > + eth = (void *)eth + sizeof(struct vlan_hdr); > + > + if (eth + 1 < data_end && eth->h_proto == bpf_htons(ETH_P_8021Q)) > + eth = (void *)eth + sizeof(struct vlan_hdr); > + > if (eth + 1 < data_end) { > if (eth->h_proto == bpf_htons(ETH_P_IP)) { > iph = (void *)(eth + 1); > diff --git a/tools/testing/selftests/bpf/xdp_metadata.h b/tools/testing/selftests/bpf/xdp_metadata.h > index 938a729bd307..6664893c2c77 100644 > --- a/tools/testing/selftests/bpf/xdp_metadata.h > +++ b/tools/testing/selftests/bpf/xdp_metadata.h > @@ -9,6 +9,14 @@ > #define ETH_P_IPV6 0x86DD > #endif > > +#ifndef ETH_P_8021Q > +#define ETH_P_8021Q 0x8100 > +#endif > + > +#ifndef ETH_P_8021AD > +#define ETH_P_8021AD 0x88A8 > +#endif > + > struct xdp_meta { > __u64 rx_timestamp; > __u64 xdp_timestamp; > -- > 2.35.3 >