From patchwork Tue Aug 24 21:34:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 502409 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 98CF5C432BE for ; Tue, 24 Aug 2021 21:35:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 853D761374 for ; Tue, 24 Aug 2021 21:35:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238076AbhHXVgf (ORCPT ); Tue, 24 Aug 2021 17:36:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235291AbhHXVg0 (ORCPT ); Tue, 24 Aug 2021 17:36:26 -0400 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 855F4C0612A4; Tue, 24 Aug 2021 14:35:40 -0700 (PDT) Received: by mail-ej1-x632.google.com with SMTP id x11so47312413ejv.0; Tue, 24 Aug 2021 14:35:40 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=mtZSbw8HLITma1TU3JWQnbsxubjtqK24FcLaQAPzwRs=; b=ZdrSNVVHF3uTYO38fDMTP53g2Y7aOkllymRPI0qy6M8aXAmxZjCYrq4pNqRIG8f5cp 3vMIaFThiVxjahvM9Gp+SngoIUjdaJJk9Ih3dz0VE8m729XLsaGmbpKmcdZThDg4+ytp Aks7maD69H65CYB9D7g/Fs9/6s9JhPntehP4R72PKSbN9KTdyv4+leamJ2sbAEuOnvTm vJBdxLvZUL3XysTJLPvuCij1l3yG3cDNGLYyGdjfzdtpfN8s5kj6mqDyfCMu/jfoVPt5 tIkzz93DNVjxoy1ZmOSzaL8dvZK0wrcarHKOo1ytBCQABWaWJnw4hDbZY9uGVn3PNPs2 uCQg== 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=mtZSbw8HLITma1TU3JWQnbsxubjtqK24FcLaQAPzwRs=; b=gNQKPgj7GqD+wQEq50gtKx99qt2sgGLxIpNzOrkL3n9DIfomKNWzDnll0SqM63dG9K nhWk6m2Fr1YY8ZzKUoC21hMrdnWhW22n4Sr6BuvPNLm5CSSuNeBQEqp3TPgb2kdFS4vp xJfo8Ib/B6sDh/19a661iCKkvmFrGZK4e3/58kpBogEVdgYw9Q99SJu/2ieIF9fmfriQ u2KqJLsB4/aWNhTu5MeQ5kOAYXMFt356H0XwxAiPvatEh7In4sGOklIsZwYvpZa4z85H UxRr56lYYFm7rWRkzB3OQ5haoaitJY830yXIOg0Sx5IELMzOI92ahSwUjlZzPXqHyJwv Wgbg== X-Gm-Message-State: AOAM5325HYNO7aiboCJKNP5BXSTfdvxgWL0PRjC9B1ozW+9jepNuyeeN xQqeN0Jte4KzQSevYcK237k= X-Google-Smtp-Source: ABdhPJwS9pUz2dqkn6uYWVXxT1CkSObiFDV6M7mI0mucqQUvAonZw6gcWhidi+IgkGZAM3NyFJmNhw== X-Received: by 2002:a17:906:1385:: with SMTP id f5mr28493098ejc.134.1629840939179; Tue, 24 Aug 2021 14:35:39 -0700 (PDT) Received: from localhost.localdomain ([2a04:241e:502:1d80:ed0a:7326:fbac:b4c]) by smtp.gmail.com with ESMTPSA id d16sm12348357edu.8.2021.08.24.14.35.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Aug 2021 14:35:38 -0700 (PDT) From: Leonard Crestez To: Dmitry Safonov <0x7f454c46@gmail.com>, David Ahern , Shuah Khan Cc: Eric Dumazet , "David S. Miller" , Herbert Xu , Kuniyuki Iwashima , Hideaki YOSHIFUJI , Jakub Kicinski , Yuchung Cheng , Francesco Ruggeri , Mat Martineau , Christoph Paasch , Ivan Delalande , Priyaranjan Jha , Menglong Dong , netdev@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFCv3 08/15] tcp: authopt: Add snmp counters Date: Wed, 25 Aug 2021 00:34:41 +0300 Message-Id: <46371eff47ae9917c76f2719d984ba2cd23f9a00.1629840814.git.cdleonard@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: linux-crypto@vger.kernel.org Add LINUX_MIB_TCPAUTHOPTFAILURE and increment on failure. This can be use by userspace to count the number of failed authentications. All types of authentication failures are reported under a single counter. Signed-off-by: Leonard Crestez --- include/uapi/linux/snmp.h | 1 + net/ipv4/proc.c | 1 + net/ipv4/tcp_authopt.c | 3 +++ 3 files changed, 5 insertions(+) diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h index 904909d020e2..1d96030889a1 100644 --- a/include/uapi/linux/snmp.h +++ b/include/uapi/linux/snmp.h @@ -290,10 +290,11 @@ enum LINUX_MIB_TCPDUPLICATEDATAREHASH, /* TCPDuplicateDataRehash */ LINUX_MIB_TCPDSACKRECVSEGS, /* TCPDSACKRecvSegs */ LINUX_MIB_TCPDSACKIGNOREDDUBIOUS, /* TCPDSACKIgnoredDubious */ LINUX_MIB_TCPMIGRATEREQSUCCESS, /* TCPMigrateReqSuccess */ LINUX_MIB_TCPMIGRATEREQFAILURE, /* TCPMigrateReqFailure */ + LINUX_MIB_TCPAUTHOPTFAILURE, /* TCPAuthOptFailure */ __LINUX_MIB_MAX }; /* linux Xfrm mib definitions */ enum diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index b0d3a09dc84e..61dd06f8389c 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -295,10 +295,11 @@ static const struct snmp_mib snmp4_net_list[] = { SNMP_MIB_ITEM("TcpDuplicateDataRehash", LINUX_MIB_TCPDUPLICATEDATAREHASH), SNMP_MIB_ITEM("TCPDSACKRecvSegs", LINUX_MIB_TCPDSACKRECVSEGS), SNMP_MIB_ITEM("TCPDSACKIgnoredDubious", LINUX_MIB_TCPDSACKIGNOREDDUBIOUS), SNMP_MIB_ITEM("TCPMigrateReqSuccess", LINUX_MIB_TCPMIGRATEREQSUCCESS), SNMP_MIB_ITEM("TCPMigrateReqFailure", LINUX_MIB_TCPMIGRATEREQFAILURE), + SNMP_MIB_ITEM("TCPAuthOptFailure", LINUX_MIB_TCPAUTHOPTFAILURE), SNMP_MIB_SENTINEL }; static void icmpmsg_put_line(struct seq_file *seq, unsigned long *vals, unsigned short *type, int count) diff --git a/net/ipv4/tcp_authopt.c b/net/ipv4/tcp_authopt.c index af777244d098..08ca77f01c46 100644 --- a/net/ipv4/tcp_authopt.c +++ b/net/ipv4/tcp_authopt.c @@ -1071,10 +1071,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp /* nothing found or expected */ if (!opt && !key) return 0; if (!opt && key) { + NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE); net_info_ratelimited("TCP Authentication Missing\n"); return -EINVAL; } if (opt && !key) { /* RFC5925 Section 7.3: @@ -1082,10 +1083,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp * of segments with TCP-AO but that do not match an MKT. The initial * default of this configuration SHOULD be to silently accept such * connections. */ if (info->flags & TCP_AUTHOPT_FLAG_REJECT_UNEXPECTED) { + NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE); net_info_ratelimited("TCP Authentication Unexpected: Rejected\n"); return -EINVAL; } else { net_info_ratelimited("TCP Authentication Unexpected: Accepted\n"); return 0; @@ -1099,10 +1101,11 @@ int __tcp_authopt_inbound_check(struct sock *sk, struct sk_buff *skb, struct tcp err = __tcp_authopt_calc_mac(sk, skb, key, true, macbuf); if (err) return err; if (memcmp(macbuf, opt->mac, key->maclen)) { + NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPAUTHOPTFAILURE); net_info_ratelimited("TCP Authentication Failed\n"); return -EINVAL; } return 0;