From patchwork Thu Apr 20 14:50:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gilad Sever X-Patchwork-Id: 13218872 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 C14A1C77B72 for ; Thu, 20 Apr 2023 14:51:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232851AbjDTOvP (ORCPT ); Thu, 20 Apr 2023 10:51:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43104 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232749AbjDTOvN (ORCPT ); Thu, 20 Apr 2023 10:51:13 -0400 Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE12E6EAE; Thu, 20 Apr 2023 07:51:06 -0700 (PDT) Received: by mail-wm1-x335.google.com with SMTP id 5b1f17b1804b1-3f182d74658so5396985e9.0; Thu, 20 Apr 2023 07:51:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682002265; x=1684594265; 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=AopaMoC5xc+EJVFzmk3bCqCl7qbsAjlFgnhPt7Vtm9k=; b=Mzs4nZlhoOkf0PHtVKy55bpf7zkPshHBXbSxY5GshqziNncYTgh4LMQwzr6bt1mbom Owqhou1tVkhJ66WL51Wb5J0qSdrVgWF8OwrbMwOvdGgsgsAtkZE291KO2/mEyJ/MGrF5 ioYc8QC9xHyXxRJ30TWfz4CxiMK7r5SDO0PKItM9wmwxVaQtm7sSs/65XjctG287yFst +8B7pY9BhF6udtMhf5NUy1xwgKWxZ1URtHNa2lIBOfXgT8Pk1ysdh6GBVFphs3cIVqGY vLaA5Meqear3X6/lbFqlZKjkHyRvlkXJ4Kb6tdqEWNjnTx0XasnRiUHgP/S+24seM0Xt FlUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682002265; x=1684594265; 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=AopaMoC5xc+EJVFzmk3bCqCl7qbsAjlFgnhPt7Vtm9k=; b=QeN3g8BTY2NXatFu5olBcgm+gHqoeyiexnEN9zU7siwluoKJAFtHqFGjOLfilXJSGl Y5K6YhGlGF60RRxGwj8B6j2yxPC5s33YEpLGTGugdKjyLVAT/dqLrmyT32pvN+qS9mZu Ds3HGeTrTvq5F2nDSNb3tZZLyE7vZQx7Ny2Cvgc4+FpNz6oLiWUShXWX2nnKbdgkqQ87 Gb7PAlMkLlPLlAIa3s7LZT4HcJzw95N1Oxgxydu8xvlt4Ikr6uNQ0Fw8U5ALKxi2odMH tMX6B8P3NIB2k/Wf+GNIi6B11WaiMTLylA9Emw5/j9ETf3+L7q4xZFI+c/GwWo5bdYKM vH4Q== X-Gm-Message-State: AAQBX9dd+gh4mm2dNlKuuTA0UjEnHnaDbUMzsoAdYsbRYdvJpP5+Nmoj JcrcFvJZZsZbywEXuLk13zE= X-Google-Smtp-Source: AKy350Z0Bs/Ory8+f1RfFmUvcpLvBKjPzPJ3H2A3PY+rT/8ZpuUGWEj6UdN7Wu5oF6Ary411wV0BfQ== X-Received: by 2002:adf:ec90:0:b0:2f0:27cc:1e7 with SMTP id z16-20020adfec90000000b002f027cc01e7mr1428305wrn.9.1682002265278; Thu, 20 Apr 2023 07:51:05 -0700 (PDT) Received: from gsever-Latitude-7400.corp.proofpoint.com ([46.120.112.185]) by smtp.gmail.com with ESMTPSA id n20-20020a7bc5d4000000b003f17b96793dsm5534619wmk.37.2023.04.20.07.51.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 07:51:04 -0700 (PDT) From: Gilad Sever To: dsahern@kernel.org, martin.lau@linux.dev, daniel@iogearbox.net, john.fastabend@gmail.com, ast@kernel.org, andrii@kernel.org, song@kernel.org, yhs@fb.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mykolal@fb.com, shuah@kernel.org, hawk@kernel.org, joe@wand.net.nz Cc: eyal.birger@gmail.com, shmulik.ladkani@gmail.com, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, Gilad Sever Subject: [PATCH bpf,v2 2/4] bpf: Call __bpf_sk_lookup()/__bpf_skc_lookup() directly via TC hookpoint Date: Thu, 20 Apr 2023 17:50:39 +0300 Message-Id: <20230420145041.508434-3-gilad9366@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230420145041.508434-1-gilad9366@gmail.com> References: <20230420145041.508434-1-gilad9366@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org skb->dev always exists in the tc flow. There is no need to use bpf_skc_lookup(), bpf_sk_lookup() from this code path. This change facilitates fixing the tc flow to be VRF aware. Signed-off-by: Gilad Sever --- net/core/filter.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/net/core/filter.c b/net/core/filter.c index 5910956f4e0d..f43f86fc1235 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -6704,8 +6704,12 @@ static const struct bpf_func_proto bpf_sk_lookup_udp_proto = { BPF_CALL_5(bpf_tc_skc_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { - return (unsigned long)bpf_skc_lookup(skb, tuple, len, IPPROTO_TCP, - netns_id, flags); + struct net *caller_net = dev_net(skb->dev); + int ifindex = skb->dev->ifindex; + + return (unsigned long)__bpf_skc_lookup(skb, tuple, len, caller_net, + ifindex, IPPROTO_TCP, netns_id, + flags); } static const struct bpf_func_proto bpf_tc_skc_lookup_tcp_proto = { @@ -6723,8 +6727,12 @@ static const struct bpf_func_proto bpf_tc_skc_lookup_tcp_proto = { BPF_CALL_5(bpf_tc_sk_lookup_tcp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { - return (unsigned long)bpf_sk_lookup(skb, tuple, len, IPPROTO_TCP, - netns_id, flags); + struct net *caller_net = dev_net(skb->dev); + int ifindex = skb->dev->ifindex; + + return (unsigned long)__bpf_sk_lookup(skb, tuple, len, caller_net, + ifindex, IPPROTO_TCP, netns_id, + flags); } static const struct bpf_func_proto bpf_tc_sk_lookup_tcp_proto = { @@ -6742,8 +6750,12 @@ static const struct bpf_func_proto bpf_tc_sk_lookup_tcp_proto = { BPF_CALL_5(bpf_tc_sk_lookup_udp, struct sk_buff *, skb, struct bpf_sock_tuple *, tuple, u32, len, u64, netns_id, u64, flags) { - return (unsigned long)bpf_sk_lookup(skb, tuple, len, IPPROTO_UDP, - netns_id, flags); + struct net *caller_net = dev_net(skb->dev); + int ifindex = skb->dev->ifindex; + + return (unsigned long)__bpf_sk_lookup(skb, tuple, len, caller_net, + ifindex, IPPROTO_UDP, netns_id, + flags); } static const struct bpf_func_proto bpf_tc_sk_lookup_udp_proto = {