From patchwork Wed Dec 8 11:37:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 12664167 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03478C433F5 for ; Wed, 8 Dec 2021 11:38:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232664AbhLHLlp (ORCPT ); Wed, 8 Dec 2021 06:41:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232603AbhLHLlh (ORCPT ); Wed, 8 Dec 2021 06:41:37 -0500 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA278C061D5F; Wed, 8 Dec 2021 03:38:05 -0800 (PST) Received: by mail-ed1-x532.google.com with SMTP id x6so7417574edr.5; Wed, 08 Dec 2021 03:38:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Zwg/3jXbHrDqLr7GxjKESPVOjZiPbN+/TXSEuiw/m4o=; b=DRIfx9VyPx3PPierHsehZT72JONUdDPL6xMnNNdoxd8QZrsg4nggfqYrqmXierk5Sw wOw2DrrpTnEUr+368nYhKM1RADiZxeZBF/ieodEcdPoxyixBjGt6SRdJfIWcU3bC4SgZ bJk39M3qfeeArcHKHr+J4kITgLieRgEKi/4aPhWkinDjvlrzJWvmcpRgA2VBK26chgHS 8RTq3nr1IKEsN5jACdGOxvCHwaOFkQudxIbcJDkJC0G/3NqPFzAUUsT2AaGdY12cBUO9 s4WqiseykcNSV3+jHkhFRAd1rUrN7H1Fnprk8eZf2m3ZfWmMB3pPtbE9UrZ/Vg7CgJ9H zK6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Zwg/3jXbHrDqLr7GxjKESPVOjZiPbN+/TXSEuiw/m4o=; b=IlDk5x7hmx9w3PLskPG3YU3gurP+70a219v8LwvK3BT+ATEIVOmnQRNHjWHusBNoub WNQgbE3VsmShJ+Wx5VZVlPGX6iSipHr81cmdyqP5s70qLsNq+h7Kiy4WqB1dV9vg8dL8 LU1qkzSVIkZ0sUjomTUTEwm7ACoGldILUpiJFb2bXPm+r7lc4AY1cn2TTld/L6/4Z37S 1uwBGZIZeJD74N/crTZQqlcPFvz3LuP/TUghaPzGkVa1VTxBE0+/5nrWWgRe5bERldtF HkknQJ4CHS4CeIf2SUvq/eKVRiRYi6QfaE11rtc3Mw4OGyTMpvZ9FxTVbQQ8ZyXA2LjE bLtw== X-Gm-Message-State: AOAM532tkfIAjFXO0jualC6vlhfO6yf3MiQty/gzNzKhkt0W0U1L+BJV VpA0/0ZqdCAq1RbwN//5t4Q= X-Google-Smtp-Source: ABdhPJwt63BDI/tVWBgZiJuF8Ge5LwXsx0bVbHMtuJ4w0nreBd7GDWTDG/6V0lSNlXAsX/p8KnUUHQ== X-Received: by 2002:a05:6402:2026:: with SMTP id ay6mr18499488edb.202.1638963484371; Wed, 08 Dec 2021 03:38:04 -0800 (PST) Received: from ponky.lan ([2a04:241e:501:3870:3c9f:e05b:4dff:43ba]) by smtp.gmail.com with ESMTPSA id g11sm1883810edz.53.2021.12.08.03.38.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Dec 2021 03:38:03 -0800 (PST) From: Leonard Crestez To: David Ahern , Dmitry Safonov <0x7f454c46@gmail.com>, Eric Dumazet Cc: Francesco Ruggeri , Shuah Khan , "David S. Miller" , Herbert Xu , Kuniyuki Iwashima , Hideaki YOSHIFUJI , Jakub Kicinski , Yuchung Cheng , Mat Martineau , Christoph Paasch , Ivan Delalande , Priyaranjan Jha , netdev@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 04/18] tcp: md5: Refactor tcp_sig_hash_skb_data for AO Date: Wed, 8 Dec 2021 13:37:19 +0200 Message-Id: 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 X-Patchwork-Delegate: kuba@kernel.org This chunk of code is identical between the implementation of TCP-MD5 and TCP-AO so rename and refactor Signed-off-by: Leonard Crestez --- include/net/tcp.h | 2 +- net/ipv4/tcp.c | 38 ++++++++++++++++++++------------------ net/ipv4/tcp_ipv4.c | 2 +- net/ipv6/tcp_ipv6.c | 2 +- 4 files changed, 23 insertions(+), 21 deletions(-) diff --git a/include/net/tcp.h b/include/net/tcp.h index 6cc2eeb45deb..1a0513b0ead0 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1688,11 +1688,11 @@ struct tcp_md5sig_pool *tcp_get_md5sig_pool(void); static inline void tcp_put_md5sig_pool(void) { local_bh_enable(); } -int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *, const struct sk_buff *, +int tcp_sig_hash_skb_data(struct ahash_request *, const struct sk_buff *, unsigned int header_len); int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *key); /* From tcp_fastopen.c */ diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 022811dd705d..8e6cbb5a1da7 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -4400,16 +4400,31 @@ struct tcp_md5sig_pool *tcp_get_md5sig_pool(void) local_bh_enable(); return NULL; } EXPORT_SYMBOL(tcp_get_md5sig_pool); -int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, +int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *key) +{ + u8 keylen = READ_ONCE(key->keylen); /* paired with WRITE_ONCE() in tcp_md5_do_add */ + struct scatterlist sg; + + sg_init_one(&sg, key->key, keylen); + ahash_request_set_crypt(hp->md5_req, &sg, NULL, keylen); + + /* We use data_race() because tcp_md5_do_add() might change key->key under us */ + return data_race(crypto_ahash_update(hp->md5_req)); +} +EXPORT_SYMBOL(tcp_md5_hash_key); +#endif /* CONFIG_TCP_MD5SIG */ + +#if defined(CONFIG_TCP_MD5SIG) || defined(CONFIG_TCP_AUTHOPT) + +int tcp_sig_hash_skb_data(struct ahash_request *req, const struct sk_buff *skb, unsigned int header_len) { struct scatterlist sg; const struct tcphdr *tp = tcp_hdr(skb); - struct ahash_request *req = hp->md5_req; unsigned int i; const unsigned int head_data_len = skb_headlen(skb) > header_len ? skb_headlen(skb) - header_len : 0; const struct skb_shared_info *shi = skb_shinfo(skb); struct sk_buff *frag_iter; @@ -4432,31 +4447,18 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, if (crypto_ahash_update(req)) return 1; } skb_walk_frags(skb, frag_iter) - if (tcp_md5_hash_skb_data(hp, frag_iter, 0)) + if (tcp_sig_hash_skb_data(req, frag_iter, 0)) return 1; return 0; } -EXPORT_SYMBOL(tcp_md5_hash_skb_data); +EXPORT_SYMBOL(tcp_sig_hash_skb_data); -int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *key) -{ - u8 keylen = READ_ONCE(key->keylen); /* paired with WRITE_ONCE() in tcp_md5_do_add */ - struct scatterlist sg; - - sg_init_one(&sg, key->key, keylen); - ahash_request_set_crypt(hp->md5_req, &sg, NULL, keylen); - - /* We use data_race() because tcp_md5_do_add() might change key->key under us */ - return data_race(crypto_ahash_update(hp->md5_req)); -} -EXPORT_SYMBOL(tcp_md5_hash_key); - -#endif +#endif /* defined(CONFIG_TCP_MD5SIG) || defined(CONFIG_TCP_AUTHOPT) */ void tcp_done(struct sock *sk) { struct request_sock *req; diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 0aa5122b29e0..91cad11db32e 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1381,11 +1381,11 @@ int tcp_v4_md5_hash_skb(char *md5_hash, const struct tcp_md5sig_key *key, if (crypto_ahash_init(req)) goto clear_hash; if (tcp_v4_md5_hash_headers(hp, daddr, saddr, th, skb->len)) goto clear_hash; - if (tcp_md5_hash_skb_data(hp, skb, th->doff << 2)) + if (tcp_sig_hash_skb_data(hp->md5_req, skb, th->doff << 2)) goto clear_hash; if (tcp_md5_hash_key(hp, key)) goto clear_hash; ahash_request_set_crypt(req, NULL, md5_hash, 0); if (crypto_ahash_final(req)) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 3b7d6ede1364..e98fc6f12c61 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -750,11 +750,11 @@ static int tcp_v6_md5_hash_skb(char *md5_hash, if (crypto_ahash_init(req)) goto clear_hash; if (tcp_v6_md5_hash_headers(hp, daddr, saddr, th, skb->len)) goto clear_hash; - if (tcp_md5_hash_skb_data(hp, skb, th->doff << 2)) + if (tcp_sig_hash_skb_data(hp->md5_req, skb, th->doff << 2)) goto clear_hash; if (tcp_md5_hash_key(hp, key)) goto clear_hash; ahash_request_set_crypt(req, NULL, md5_hash, 0); if (crypto_ahash_final(req))