From patchwork Mon Jun 28 05:45:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steffen Klassert X-Patchwork-Id: 12347293 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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 A210CC49EA7 for ; Mon, 28 Jun 2021 05:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 867EF61466 for ; Mon, 28 Jun 2021 05:55:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232287AbhF1F5d (ORCPT ); Mon, 28 Jun 2021 01:57:33 -0400 Received: from mailout1.secunet.com ([62.96.220.44]:40986 "EHLO mailout1.secunet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232214AbhF1F5Z (ORCPT ); Mon, 28 Jun 2021 01:57:25 -0400 Received: from cas-essen-02.secunet.de (unknown [10.53.40.202]) by mailout1.secunet.com (Postfix) with ESMTP id 6F10E800057; Mon, 28 Jun 2021 07:54:58 +0200 (CEST) Received: from mbx-essen-01.secunet.de (10.53.40.197) by cas-essen-02.secunet.de (10.53.40.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Mon, 28 Jun 2021 07:54:58 +0200 Received: from gauss2.secunet.de (10.182.7.193) by mbx-essen-01.secunet.de (10.53.40.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Mon, 28 Jun 2021 07:54:58 +0200 Received: by gauss2.secunet.de (Postfix, from userid 1000) id A85B331805BA; Mon, 28 Jun 2021 07:45:28 +0200 (CEST) From: Steffen Klassert To: David Miller , Jakub Kicinski CC: Herbert Xu , Steffen Klassert , Subject: [PATCH 14/17] xfrm: replay: remove advance indirection Date: Mon, 28 Jun 2021 07:45:19 +0200 Message-ID: <20210628054522.1718786-15-steffen.klassert@secunet.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210628054522.1718786-1-steffen.klassert@secunet.com> References: <20210628054522.1718786-1-steffen.klassert@secunet.com> MIME-Version: 1.0 X-ClientProxiedBy: cas-essen-01.secunet.de (10.53.40.201) To mbx-essen-01.secunet.de (10.53.40.197) X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Florian Westphal Similar to other patches: add a new helper to avoid an indirection. v2: fix 'net/xfrm/xfrm_replay.c:519:13: warning: 'seq' may be used uninitialized in this function' warning. Signed-off-by: Florian Westphal Signed-off-by: Steffen Klassert --- include/net/xfrm.h | 2 +- net/xfrm/xfrm_input.c | 2 +- net/xfrm/xfrm_replay.c | 24 +++++++++++++++--------- 3 files changed, 17 insertions(+), 11 deletions(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 9a79e41defa7..a7f997b13198 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -306,7 +306,6 @@ struct km_event { }; struct xfrm_replay { - void (*advance)(struct xfrm_state *x, __be32 net_seq); int (*check)(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq); @@ -1722,6 +1721,7 @@ static inline int xfrm_policy_id2dir(u32 index) } #ifdef CONFIG_XFRM +void xfrm_replay_advance(struct xfrm_state *x, __be32 net_seq); void xfrm_replay_notify(struct xfrm_state *x, int event); static inline int xfrm_aevent_is_on(struct net *net) diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c index 1158cd0311d7..c8971e4b33ab 100644 --- a/net/xfrm/xfrm_input.c +++ b/net/xfrm/xfrm_input.c @@ -665,7 +665,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) goto drop_unlock; } - x->repl->advance(x, seq); + xfrm_replay_advance(x, seq); x->curlft.bytes += skb->len; x->curlft.packets++; diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c index 5feeb65f00b3..9565b0f7d380 100644 --- a/net/xfrm/xfrm_replay.c +++ b/net/xfrm/xfrm_replay.c @@ -150,14 +150,26 @@ static int xfrm_replay_check(struct xfrm_state *x, return -EINVAL; } -static void xfrm_replay_advance(struct xfrm_state *x, __be32 net_seq) +static void xfrm_replay_advance_bmp(struct xfrm_state *x, __be32 net_seq); +static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq); + +void xfrm_replay_advance(struct xfrm_state *x, __be32 net_seq) { - u32 diff; - u32 seq = ntohl(net_seq); + u32 diff, seq; + + switch (x->repl_mode) { + case XFRM_REPLAY_MODE_LEGACY: + break; + case XFRM_REPLAY_MODE_BMP: + return xfrm_replay_advance_bmp(x, net_seq); + case XFRM_REPLAY_MODE_ESN: + return xfrm_replay_advance_esn(x, net_seq); + } if (!x->props.replay_window) return; + seq = ntohl(net_seq); if (seq > x->replay.seq) { diff = seq - x->replay.seq; if (diff < x->props.replay_window) @@ -695,42 +707,36 @@ static int xfrm_replay_overflow_offload_esn(struct xfrm_state *x, struct sk_buff } static const struct xfrm_replay xfrm_replay_legacy = { - .advance = xfrm_replay_advance, .check = xfrm_replay_check, .recheck = xfrm_replay_check, .overflow = xfrm_replay_overflow_offload, }; static const struct xfrm_replay xfrm_replay_bmp = { - .advance = xfrm_replay_advance_bmp, .check = xfrm_replay_check_bmp, .recheck = xfrm_replay_check_bmp, .overflow = xfrm_replay_overflow_offload_bmp, }; static const struct xfrm_replay xfrm_replay_esn = { - .advance = xfrm_replay_advance_esn, .check = xfrm_replay_check_esn, .recheck = xfrm_replay_recheck_esn, .overflow = xfrm_replay_overflow_offload_esn, }; #else static const struct xfrm_replay xfrm_replay_legacy = { - .advance = xfrm_replay_advance, .check = xfrm_replay_check, .recheck = xfrm_replay_check, .overflow = xfrm_replay_overflow, }; static const struct xfrm_replay xfrm_replay_bmp = { - .advance = xfrm_replay_advance_bmp, .check = xfrm_replay_check_bmp, .recheck = xfrm_replay_check_bmp, .overflow = xfrm_replay_overflow_bmp, }; static const struct xfrm_replay xfrm_replay_esn = { - .advance = xfrm_replay_advance_esn, .check = xfrm_replay_check_esn, .recheck = xfrm_replay_recheck_esn, .overflow = xfrm_replay_overflow_esn,