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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 5A2CAC10F14 for ; Thu, 10 Oct 2019 18:17:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 30ED020659 for ; Thu, 10 Oct 2019 18:17:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cloudflare.com header.i=@cloudflare.com header.b="fEySpYW9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726824AbfJJSRz (ORCPT ); Thu, 10 Oct 2019 14:17:55 -0400 Received: from mail-lj1-f171.google.com ([209.85.208.171]:37609 "EHLO mail-lj1-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726691AbfJJSRz (ORCPT ); Thu, 10 Oct 2019 14:17:55 -0400 Received: by mail-lj1-f171.google.com with SMTP id l21so7208501lje.4 for ; Thu, 10 Oct 2019 11:17:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=5tkv7J2E4M+jPkGxyjFNBxMyy+SZ1PuNIvOUG2qBR0I=; b=fEySpYW9c/B3ki5Ej182OSxCs2hWv28c06E0d893hiaGWEQg7Mnyy7orJO1AwPRaYV Q6i0sWtRqJ5shFiXBZtNgAwHA1spUdkFgoJqcCnIgG8oqR6NuuVj5gq0VIl+yTOsjAG/ zWQqNP0yUqlof7MDI7RsJHY6vKFZ5iPteoSFk= 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:mime-version :content-transfer-encoding; bh=5tkv7J2E4M+jPkGxyjFNBxMyy+SZ1PuNIvOUG2qBR0I=; b=gJ/7omf+2DXQp+JyISxywVPAgxn/Pw3YZY79KAlZqxROgpkaAbJL0PUcEhYcGS/V5t r7IIKd+2XL4bkjjl5bbO5Qc3+fRQkyap1/IM64w3hSa9b7/RDBtyh4h7Oe6gz+R1TUuO Nxnwnik4NW2pxdH5Ih0r4A3lCQqAE+oq80Xe4jEqruHs3Fga06+32ayj5clDorQ8nx/9 oCtO2+EekdtoUViy/9Hdoj8UY6ZwCSPVWzOJTdKxXsv5/4O2HUoQkFa3JKEidjo/rRTB antkITE2ocRgR2c1Xwk2AM+fsv8hTs77SgXURI9jAKHIZluBmn1l61qJDEpm1Ax48xDf tffw== X-Gm-Message-State: APjAAAU75h9F5w4CtPYy9vrQKV8otKCMNOLrHEnf4msHj1+uBuMGaa+/ hD/1NvrhgzZBYKx7kIggZVZhxkxK79mioA== X-Google-Smtp-Source: APXvYqyYCLJbJZ+iWszeoF4t8dUj66NGan7cEpj3Ut4Q3tmwqx+YSPrCEJOBU5OXjNYy2fjO4WzCMg== X-Received: by 2002:a05:651c:20b:: with SMTP id y11mr6914222ljn.211.1570731473424; Thu, 10 Oct 2019 11:17:53 -0700 (PDT) Received: from cloudflare.com ([2a02:a310:c262:aa00:b35e:8938:2c2a:ba8b]) by smtp.gmail.com with ESMTPSA id h5sm1533883ljf.83.2019.10.10.11.17.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Oct 2019 11:17:52 -0700 (PDT) From: Jakub Sitnicki To: bpf@vger.kernel.org Cc: netdev@vger.kernel.org, kernel-team@cloudflare.com, Stanislav Fomichev Subject: [PATCH bpf-next v2 0/2] Atomic flow dissector updates Date: Thu, 10 Oct 2019 20:17:48 +0200 Message-Id: <20191010181750.5964-1-jakub@cloudflare.com> X-Mailer: git-send-email 2.20.1 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 This patch set changes how bpf(BPF_PROG_ATTACH) operates on flow dissector hook when there is already a program attached. After this change the user is allowed to update the program in a single syscall. Please see the first patch for rationale. v1 -> v2: - Don't use CHECK macro which expects BPF program run duration, which we don't track in attach/detach tests. Suggested by Stanislav Fomichev. - Test re-attaching flow dissector in both root and non-root network namespace. Suggested by Stanislav Fomichev. Jakub Sitnicki (2): flow_dissector: Allow updating the flow dissector program atomically selftests/bpf: Check that flow dissector can be re-attached net/core/flow_dissector.c | 10 +- .../bpf/prog_tests/flow_dissector_reattach.c | 127 ++++++++++++++++++ 2 files changed, 134 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c -- 2.20.1