From patchwork Fri Dec 4 03:16:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Roeseler X-Patchwork-Id: 338791 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 1B612C433FE for ; Fri, 4 Dec 2020 03:17:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DAB4822517 for ; Fri, 4 Dec 2020 03:17:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727725AbgLDDRb (ORCPT ); Thu, 3 Dec 2020 22:17:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727669AbgLDDRa (ORCPT ); Thu, 3 Dec 2020 22:17:30 -0500 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFC43C061A53 for ; Thu, 3 Dec 2020 19:16:50 -0800 (PST) Received: by mail-pj1-x1032.google.com with SMTP id m5so2350021pjv.5 for ; Thu, 03 Dec 2020 19:16:50 -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=rM4t2eXx/FS2J7CAO2fnC8vXaIERWWcRjKh6bkZ0osI=; b=R92+5YE9KqzDR26hmGKe9GIYFv2HJatvt41NZv8VoCVJ/KJe9aQmdyIV2lAsVhRf8q jM17sqo3QmQ+mVjqdXczPtf66ENIAZVD0wf4NIQsAT6skU1Y2FHvjWoU1B//BqhJAXmH mOpzd/8VkBpepK35UUtIg88dG6fmVYMLWgsxAwBAnb0eO+VGkB8aCFYWJj6FfuFuiPiJ +/gjE6wo8GtRMq1IMmywVNsB5uiVQY9JAqGkfbiG5q8kUcfMt1U/jfgV1hszyzyWfe8z sQQzsbvcjhRj33hXHPGXxAx1lWOVWuV6KlJM+rBvzUWDVRibJB9S7O3w2QkpL45ikAR/ TXpw== 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=rM4t2eXx/FS2J7CAO2fnC8vXaIERWWcRjKh6bkZ0osI=; b=N4YlChpegDhWqK0cmMx+vWQxY37Vyenb/X2FyFEvVYi3T4nnZdNlS3qIMYBXTIedZQ ZLDMt+wpMz+4yUBkJumr2SuOw4MQzmwi6PG1E0l0iDQjmHEW+yQ3R4KgdTriZXS8Zstl Gugk/8HpX3iLzOy7fVvZojW5J02JLePPh3np/YeTwk9G3GT8qitOXOf1bSuqlN9Pk0Ym edMy8RfcJBu/BOjPX5E6XY3mq9aq++wotHeApL+EvVPhGhApYY8fe0rcSjHx5ei5SjUe 9FgE6SOpIz5AGpKucwRn8SwS2eRITF/1arnvawLHvYvOsXmGRdil7JldFcQCWt5sa1CZ nOxw== X-Gm-Message-State: AOAM533HUfXwMHYNPoXQD/CAHZTRhX68XVhxmbORdDgMqF88caE3Xtt3 DDbaQZlmtgH1B8vu7gZmXqE= X-Google-Smtp-Source: ABdhPJyr/lbnckGafVC9J+5/GH2Fuu/6f67pXnGtu/LSpv/ldxpRqc162flhkhyj5w6YmZ16MkFtxQ== X-Received: by 2002:a17:90b:f8f:: with SMTP id ft15mr2215576pjb.210.1607051810359; Thu, 03 Dec 2020 19:16:50 -0800 (PST) Received: from clinic20-Precision-T3610.hsd1.ca.comcast.net ([2601:648:8400:9ef4:bf20:728e:4c43:a644]) by smtp.gmail.com with ESMTPSA id s11sm3089696pfh.128.2020.12.03.19.16.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Dec 2020 19:16:49 -0800 (PST) From: Andreas Roeseler To: davem@davemloft.net, kuznet@ms2.inr.ac.ru, yoshfuji@linux-ipv6.org, kuba@kernel.org Cc: netdev@vger.kernel.org Subject: [PATCH net-next 3/6] net: add sysctl for enabling RFC 8335 PROBE messages Date: Thu, 3 Dec 2020 19:16:49 -0800 Message-Id: <1de8170c1b7dec795f8ca257fbd56c61c36ad5a2.1607050389.git.andreas.a.roeseler@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Section 8 of RFC 8335 specifies potential security concerns of responding to PROBE requests, and states that nodes that support PROBE functionality MUST be able to enable/disable responses and it is disabled by default. Add sysctl to enable responses to PROBE messages. Signed-off-by: Andreas Roeseler --- include/net/netns/ipv4.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 8e4fcac4df72..1d9b74228f3e 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -85,6 +85,7 @@ struct netns_ipv4 { #endif int sysctl_icmp_echo_ignore_all; + int sysctl_icmp_echo_enable_probe; int sysctl_icmp_echo_ignore_broadcasts; int sysctl_icmp_ignore_bogus_error_responses; int sysctl_icmp_ratelimit;