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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87E20C35DF0 for ; Tue, 25 Feb 2020 04:46:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5705024681 for ; Tue, 25 Feb 2020 04:46:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qAVJSW7R" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728776AbgBYEqG (ORCPT ); Mon, 24 Feb 2020 23:46:06 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:37053 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728725AbgBYEqF (ORCPT ); Mon, 24 Feb 2020 23:46:05 -0500 Received: by mail-pf1-f194.google.com with SMTP id p14so6515638pfn.4; Mon, 24 Feb 2020 20:46:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HCVc3i9d3S/qcUpJff2WYyjdf86w+Z7qr4+taVELhb4=; b=qAVJSW7RAgfZGvfyiSBLu1F1qhdFjXkE8xJTqEzZt333W/krXdLyn22u+T0pK14CBt aBZwBMlZZBDSsKqU8sfQTNqHwU/J2KB+zXcPLyOp+Tg5LSI7GQC/Gq5iKqr0MJGz06iy hJcst9b0VQfcTfuhaDoqhOcvBzNH9dP1GRm7E5ZWYIOq0zm/TxWFjUq+sxpl9eVHNVWM 2i5VQoRP7UvNJSdRcfhJDc1eb1viFAEVEdsDwB78i1/ZEjWNgFgVIbdqUVXi0PakA53+ M2I4MGnfiNDtJQ0FLheBMEHQn+Ftce1iUI5+AnNsryGNIbRMbZunNw2sO1z0Qvsu2bYB rXnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HCVc3i9d3S/qcUpJff2WYyjdf86w+Z7qr4+taVELhb4=; b=ExKXYRYaVIR/nOaBP2hQnZOd60z5okf8MF8ygMG4FXFolA9Kzq55aTeZF36VeoJuAR 30xmNS53PMwaL5zLxWOvA39EeFe6uBzghEjako4VEgni0BhIi8aN9r/JLnnINNcQCXug srJX7b+qAvjpOBLVb+GDJXgMnAp/jS+2yzY2/5wUqQrxnUkfqTrEq44SSFqpfpv3Ellm OYksCHld5CzVLWONdT0M9glSahcnXFrzlenoMu+Z+zMhp7DeC78ZCVg33/+epCsBSA9G bDjUhiKPmEglr5CcgXkS5IccmT0DWKQIQY3QKR9rkYzyQNY/qUD24DjVc47ntBUyrCtO j3Lg== X-Gm-Message-State: APjAAAUeVTSHYZgTpQoFaPy+SM7JpKWW7Hr95ic3oaIEtoasD3l2KsRN 2BGxYRTBTJ0a7pxvYHdhEUF5Ed39/rA= X-Google-Smtp-Source: APXvYqzdgAVkcj6/SSD9kRG26CjGcEzoUEqF0Wk87X4XzI/A8SPlR7fHGP5atRyB0AiGBGapxO3e3A== X-Received: by 2002:a62:1456:: with SMTP id 83mr55965186pfu.186.1582605963455; Mon, 24 Feb 2020 20:46:03 -0800 (PST) Received: from kernel.rdqbwbcbjylexclmhxlbqg5jve.hx.internal.cloudapp.net ([65.52.171.215]) by smtp.gmail.com with ESMTPSA id l13sm1170879pjq.23.2020.02.24.20.46.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2020 20:46:03 -0800 (PST) From: Lingpeng Chen To: bpf Cc: Alexei Starovoitov , Daniel Borkmann , John Fastabend , "David S . Miller" , netdev@vger.kernel.org, Petar Penkov , Song Liu , Lingpeng Chen Subject: [PATCH v4 bpf-next 0/3] bpf: Add get_netns_id helper for sock_ops Date: Tue, 25 Feb 2020 04:45:35 +0000 Message-Id: <20200225044538.61889-1-forrest0579@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Currently 5-tuple(sip+dip+sport+dport+proto) can't identify a uniq connection because there may be multi net namespace. For example, there may be a chance that netns a and netns b all listen on 127.0.0.1:8080 and the client with same port 40782 connect to them. Without netns number, sock ops program can't distinguish them. Using bpf_get_netns_id helpers to get current connection netns number to distinguish connections. Changes in v4: - rename get_netns_id_sock_ops to get_getns_id - rebase from bpf-next Changes in v3: - rename sock_ops_get_netns to get_netns_id Changes in v2: - Return u64 instead of u32 for sock_ops_get_netns - Fix build bug when CONFIG_NET_NS not set - Add selftest for sock_ops_get_netns Lingpeng Chen (3): bpf: Add get_netns_id helper function for sock_ops bpf: Sync uapi bpf.h to tools/ selftests/bpf: add selftest for get_netns_id helper include/uapi/linux/bpf.h | 9 +++- net/core/filter.c | 20 ++++++++ tools/include/uapi/linux/bpf.h | 9 +++- .../selftests/bpf/progs/test_tcpbpf_kern.c | 11 +++++ .../testing/selftests/bpf/test_tcpbpf_user.c | 46 ++++++++++++++++++- 5 files changed, 92 insertions(+), 3 deletions(-) base-commit e0360423d020 ("selftests/bpf: Run SYN cookies with reuseport BPF test only for TCP") -- 2.20.1