From patchwork Thu Apr 20 12:31:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gilad Sever X-Patchwork-Id: 13218690 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 AE40CC77B7E for ; Thu, 20 Apr 2023 12:32:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234727AbjDTMcx (ORCPT ); Thu, 20 Apr 2023 08:32:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53522 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234317AbjDTMcu (ORCPT ); Thu, 20 Apr 2023 08:32:50 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 154D712F; Thu, 20 Apr 2023 05:32:33 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-3f178da21b5so4446725e9.3; Thu, 20 Apr 2023 05:32:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681993951; x=1684585951; 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=SQt4d0zWjQY1z91uepy6h4EuQqaXR87jdp20zwNy9IM=; b=EzZCGW8+GBqLFc5RwBAzUZE0mhTL7nEhEZC1sraSYZOZ0ZF1sZV5oR0THYhzW3XyGo rknZ2Ch94q3kyfXD1wa+JZORjr7wS5TkY31olxsctkReFWB4g6xmpiDPB6purgkPXOGB 1FIT5JoGYTudVToFaLmwJr185zGzDXbgG41zzrMBcfiXFUROivGawFE9LqFQA5RMLSyr 3YugEZEy2WKV07hho9ofpN88T2KWiWuJC2BaRXyra8SscJNhsQr2EzZgA7accXSyhoa9 zSEVKpRrNxaYvy+kY3alUFgd5HwTqHsz64YSa5cauOhS8U/cP16IgaHong6quDbPxmp6 U34A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681993951; x=1684585951; 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=SQt4d0zWjQY1z91uepy6h4EuQqaXR87jdp20zwNy9IM=; b=QqBGEZYqp63o2dkZByZfE7KTJkxIEo2T+4jttX7Ht0xbBbma+8D9EM013eGyKJQlWh Rr8asrsUeyBwr7qa5u9P/cxUKp6WgaJMNh9ToMfgZ+CY7GQNcs5LIxqRR6goSRxf40m8 Thu9bZ0MMLhliwfWQ6FKylz8VoV3uM+Qv5VfnjwhDzmQGxLfZBqTIC5UU4Ewsej0GhRE Nqas7cwyOL4i5NeuK5ODVzUDBIKjkn2bT3B69Fw8eBdKiu6u+qOgaVuKIdN1tzA+LJPM nFLZt7TyVcBe0sgeSjVIK9/ZLahSe9GJjF8zcdUNPI9HPgYjnH3uqOHLUmIyfz9HjsRy g7Kg== X-Gm-Message-State: AAQBX9ebgEDDrl6Sw0moOtJjRkSVFPq3dzDmqgHFuj053YVG9UYVfNWL S7duamxpRrMKJZSYy8Y+5qs= X-Google-Smtp-Source: AKy350YhKYEwknDHPu9QM3Wf0jpgPncIy67BxrDuOVn4vNX9LMfVQ/D5bEMB4qL7dbetCvQAtcP5CQ== X-Received: by 2002:adf:f3d0:0:b0:2cf:efc7:19ad with SMTP id g16-20020adff3d0000000b002cfefc719admr1226762wrp.53.1681993951394; Thu, 20 Apr 2023 05:32:31 -0700 (PDT) Received: from gsever-Latitude-7400.corp.proofpoint.com ([46.120.112.185]) by smtp.gmail.com with ESMTPSA id z16-20020a5d4410000000b002f79ea6746asm1835081wrq.94.2023.04.20.05.32.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 05:32:30 -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 2/4] bpf: Call __bpf_sk_lookup()/__bpf_skc_lookup() directly via TC hookpoint Date: Thu, 20 Apr 2023 15:31:53 +0300 Message-Id: <20230420123155.497634-3-gilad9366@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230420123155.497634-1-gilad9366@gmail.com> References: <20230420123155.497634-1-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. Reviewed-by: Shmulik Ladkani Reviewed-by: Eyal Birger 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 = {