From patchwork Sun Aug 29 22:16:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Dumazet X-Patchwork-Id: 504221 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=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, 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 628B2C432BE for ; Sun, 29 Aug 2021 22:16:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 333E060F6C for ; Sun, 29 Aug 2021 22:16:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235375AbhH2WRN (ORCPT ); Sun, 29 Aug 2021 18:17:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54746 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233919AbhH2WRM (ORCPT ); Sun, 29 Aug 2021 18:17:12 -0400 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24823C061575 for ; Sun, 29 Aug 2021 15:16:20 -0700 (PDT) Received: by mail-pj1-x102a.google.com with SMTP id d3-20020a17090ae28300b0019629c96f25so5779775pjz.2 for ; Sun, 29 Aug 2021 15:16:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=kPIoMNa6+GkON0uEih9TeTwj2vQOxnrHJ7OzD3wZxNU=; b=DfGULPXK6lotazfD3Vgkwt3mNV5Myn0Ug9BpqE1/tykIn9ODTl8a9kTEAnMxfhcF7j rg3P3Z5xBivcppfhOww/5P4hxhEks0MQzogqPpEO45lqV4ns4iU57odiB71VVqF6L6gb LrsqUQdKE1OuEz8sda5sk6VgX9koz8EZj+dWQ+E8A6JaYSywDinhKfxh/2kinpy0ygW+ EPC3Oc+atEq6B/1ji7Ll2Dtb68HUHfjydLCYfCwjSkjKdfwo5Jps08tUmINdykshYEw0 Kq/kF2iW9Hp0Cv8MLIotn8j9uv3Ses+w/xYrtPMiXVC6rzlLmiPaUGuxOKkITos7zi+Z Q+5g== 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=kPIoMNa6+GkON0uEih9TeTwj2vQOxnrHJ7OzD3wZxNU=; b=UhXcvZgsnaENY9EYcmPQ8G03alXk/vSqHoJqiXJug+WpOQ2ndPppjR6LwQgqJcVoxi VFc/VpLkkY2Es2Kc9s7bEWS1+T1b4YMXP6UW/NpolWdRQFDAAfZMUFB5EKDu4IXS4NHZ 4ChwOO43Wu0bvSWDQJAmP0dzKECfrNUu8huBZnf984fu9HMFT0fLDSA/7ah3F8t0OpuQ bFUbdI4noPVY/n4cms8UnFiKWzKtN8Iy6jgiVSPaTHeNlvJ+VJ/Hl6mvhm3LwfzoBtMF NmsdB4VbIo1+A/CeSYaLzaTOrlblTsAfRI6kyFuMtlK3ytQ7eflL5lSuIGVm6onoTzqZ 7jLA== X-Gm-Message-State: AOAM531WhDEMlt5MLXPGGyoYglNC2XAd8y9cF2Gr2oWlVKLQLzQS6PO1 H+hBV0lJHgZEfUyYP5sfRLQ= X-Google-Smtp-Source: ABdhPJweS+P2taMSdYRDT5/e+a1uNKCe6tVZIg9G6S0tBFMkggQvyiEJPBVcIF7uqTEGrJ+1ncUBIQ== X-Received: by 2002:a17:902:bd07:b029:12c:f4d5:fc6b with SMTP id p7-20020a170902bd07b029012cf4d5fc6bmr18731938pls.31.1630275379677; Sun, 29 Aug 2021 15:16:19 -0700 (PDT) Received: from edumazet1.svl.corp.google.com ([2620:15c:2c4:201:3934:d27b:77de:86b7]) by smtp.gmail.com with ESMTPSA id o15sm1162735pjr.0.2021.08.29.15.16.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Aug 2021 15:16:19 -0700 (PDT) From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski Cc: netdev , Eric Dumazet , Eric Dumazet , Willy Tarreau , Keyu Man , David Ahern Subject: [PATCH net 0/2] inet: make exception handling less predictible Date: Sun, 29 Aug 2021 15:16:13 -0700 Message-Id: <20210829221615.2057201-1-eric.dumazet@gmail.com> X-Mailer: git-send-email 2.33.0.259.gc128427fd7-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Eric Dumazet This second round of patches is addressing Keyu Man recommendations to make linux hosts more robust against a class of brute force attacks. Eric Dumazet (2): ipv6: make exception cache less predictible ipv4: make exception cache less predictible net/ipv4/route.c | 44 +++++++++++++++++++++++++++++--------------- net/ipv6/route.c | 5 ++++- 2 files changed, 33 insertions(+), 16 deletions(-) Reviewed-by: David Ahern Tested-by: David Ahern