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=-3.6 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 D95BBC34026 for ; Tue, 18 Feb 2020 09:16:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AF5E020659 for ; Tue, 18 Feb 2020 09:16:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="t6HXTR6h" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726295AbgBRJQH (ORCPT ); Tue, 18 Feb 2020 04:16:07 -0500 Received: from mail-pj1-f66.google.com ([209.85.216.66]:53227 "EHLO mail-pj1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726252AbgBRJQH (ORCPT ); Tue, 18 Feb 2020 04:16:07 -0500 Received: by mail-pj1-f66.google.com with SMTP id ep11so741681pjb.2; Tue, 18 Feb 2020 01:16:06 -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=qRNGDEmelSQozeh3us/5sKCRwYIHWUucXyEfNoy+2NI=; b=t6HXTR6h40ojKDk6zYa5tI2W9qaRdhtM5VpFHADwR34Qiqrkyk6Uqpn46pmfGU7cxM ScGOWx/osOi3YiqgiAWCbn7eJBhxVF7iID7/ot2+duTx8kETRbTuxPg5cL3OAUNNzUlF KruNVcCshDufSKZP8w3CABwrfn3ch8oZo+3MYcSUHK+u91RSxWPmhZgfR8YUWsoC3tYt EprWvYm8ogvqKBJZiNkvRqGMA4YAgF5GeGthQLshaiLvEiIY1eHaLvnoXkktAQfIzfVi ALTqPWcmXfjYSRfZAGw2ZWFpNaMo8GBhvl8PHxzXeMcX0Me4FKw69GGN8RFPSuT/3Va1 2uBQ== 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=qRNGDEmelSQozeh3us/5sKCRwYIHWUucXyEfNoy+2NI=; b=A+eOwqFM4tFALpneO4waxgNRGmEe9XvVTHH/zYrWCRAEq+LvweRThlEcQBY6djf2kV 3rVBfMnz6kOqEL9nd/DtOXQ3BOy0dEw9E5XvAhCYrOAAYMEgRsY19NDHRNf/YiWIbG6H W5KpdnSykKShHUXYtPcrkMs/07f36rQ+MPbkKfLJIdsNDqiLW70TzAE5Yj+OjnwBo8QB Y9F0v054+t7Ukt+S3nn5Jqdjl/4KQBIHWJa9wrX/Tmeha58st9S9Pl9w6GRo4ltphFCq ZOR8mdShKYmWkUhkemGO8aZa1+LY1kPQsCyYPhcGkb+/jcnPouAnqKACHSBgySpdO3Mr eCPw== X-Gm-Message-State: APjAAAXxrvYTX16/xX4GejwnxQGNfx24Mup4MrpNY9JdVvA0KVYczAg/ z0RUhYD0Q2tJDZOOZgq6JDkdbjnplirzDw== X-Google-Smtp-Source: APXvYqzg67Vy5jN1HHip86z4nDMoK9WgO1MQsjAQL1zYmqdK4SjB39+OHZaqrdvohO4RGIxl4bWDDQ== X-Received: by 2002:a17:902:9a08:: with SMTP id v8mr18634698plp.251.1582017366249; Tue, 18 Feb 2020 01:16:06 -0800 (PST) Received: from kernel.rdqbwbcbjylexclmhxlbqg5jve.hx.internal.cloudapp.net ([65.52.171.215]) by smtp.gmail.com with ESMTPSA id h191sm1992110pge.85.2020.02.18.01.16.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Feb 2020 01:16:05 -0800 (PST) From: Lingpeng Chen To: bpf Cc: Alexei Starovoitov , Daniel Borkmann , John Fastabend , "David S . Miller" , netdev@vger.kernel.org, Petar Penkov , Lingpeng Chen Subject: [PATCH v2 bpf-next 0/3] bpf: Add sock_ops_get_netns helpers Date: Tue, 18 Feb 2020 09:15:38 +0000 Message-Id: <20200218091541.107371-1-forrest0579@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200206083515.10334-1-forrest0579@gmail.com> References: <20200206083515.10334-1-forrest0579@gmail.com> 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_sock_ops_get_netns helpers to get current connection netns number to distinguish connections. 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 sock ops get netns helpers bpf: Sync uapi bpf.h to tools/ selftests/bpf: add selftest for sock_ops_get_netns helper include/uapi/linux/bpf.h | 8 +++- net/core/filter.c | 19 ++++++++ tools/include/uapi/linux/bpf.h | 8 +++- .../selftests/bpf/progs/test_tcpbpf_kern.c | 11 +++++ .../testing/selftests/bpf/test_tcpbpf_user.c | 46 ++++++++++++++++++- 5 files changed, 89 insertions(+), 3 deletions(-) base-commit bb6d3fb354c5 ("Linux 5.6-rc1") -- 2.20.1