From patchwork Thu Dec 23 15:39:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 12698395 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 7301CC43217 for ; Thu, 23 Dec 2021 15:41:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349050AbhLWPk6 (ORCPT ); Thu, 23 Dec 2021 10:40:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349036AbhLWPkq (ORCPT ); Thu, 23 Dec 2021 10:40:46 -0500 Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB47CC061757; Thu, 23 Dec 2021 07:40:45 -0800 (PST) Received: by mail-ed1-x52a.google.com with SMTP id b13so22889502edd.8; Thu, 23 Dec 2021 07:40:45 -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=OFeSHr8AnD7N7PpPg/gICmxN4HGNzZzmdm4MbcZd+x6sBOd80fc2e7t+VHT1a4IwOc pIemen5CdWuUwZmRI/4JQG7zriVnHmLQT491xhDZkau1698At5uWLlR2ZNat6/228BaU Ek6+aIlLHCoy3219OCvrPn10Y4+jxdTM7ymhMnJoqjF/OPNSyqBD24vMJCw9EgA9MDd5 p/02LitdqCIZsVZzBZxenKrHmHSTDados7TFtvseT0LydVKtZvIY0gPczyCz4BvNimq7 dA5cA2IgIu+6YnMR40eGV7fBIvJp6QurqbO142iwUjOFcucEuVEhGtLu8zK0jYbQ6vep I5qg== 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=x3/9h6GFKlheMQaX6gg8IQH1Qn3DzRqrPOhMPIyvdhZuqNU3/8oHImvQPlUIt8WKk1 UuhhCXY5jmHdkhkEtzAjST97Jc8XEZ7WpG9+jQ9HdtAVvPEy8cTpYslRYQEpb8R2qsPN a4Ga734ghdvBFafMfkArdhGXb3VBIPUtRtY01vAow/4j3pT4eXEVpo9X+uop+9UDk6mC w8H1yUbN7Iu0HQi6bVxSoCbRVB7paLxj1IYDNZQh4H7hYKyhUvXBXkUnQ/qXs4MtGthm dexD3f5/4ueFidOEe36Py95TIHxx3rgOghX2HDjm1+VD0VLZ86DRQFeOaOxMwrA2ptr+ ML5Q== X-Gm-Message-State: AOAM533VF1T/aGHFkABv7wR1n38eupf8f6O7Jx4h6t0PKyV9GD/T+afo D5n6JfqL8rZKP6nIitLKQ5M= X-Google-Smtp-Source: ABdhPJwNri+jUZzFpH/ekr+dHNBINae4hbDJIN6g6FF0ArkXPaCCcihKmjy/KEjTStqdrPL+dXJUEA== X-Received: by 2002:aa7:dc05:: with SMTP id b5mr2443480edu.46.1640274043875; Thu, 23 Dec 2021 07:40:43 -0800 (PST) Received: from ponky.lan ([2a04:241e:501:3870:7c02:dfc6:b554:ab10]) by smtp.gmail.com with ESMTPSA id bx6sm2088617edb.78.2021.12.23.07.40.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 07:40:43 -0800 (PST) From: Leonard Crestez To: David Ahern , Eric Dumazet , Philip Paeps , Dmitry Safonov <0x7f454c46@gmail.com> Cc: Shuah Khan , "David S. Miller" , Herbert Xu , Kuniyuki Iwashima , Hideaki YOSHIFUJI , Jakub Kicinski , Yuchung Cheng , Francesco Ruggeri , 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 v4 04/19] tcp: md5: Refactor tcp_sig_hash_skb_data for AO Date: Thu, 23 Dec 2021 17:39:59 +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))