From patchwork Fri Jul 6 11:16:57 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Neira Ayuso X-Patchwork-Id: 169417 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id B29532C01D3 for ; Fri, 6 Jul 2012 21:19:17 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757168Ab2GFLTE (ORCPT ); Fri, 6 Jul 2012 07:19:04 -0400 Received: from mail.us.es ([193.147.175.20]:43424 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757171Ab2GFLTA (ORCPT ); Fri, 6 Jul 2012 07:19:00 -0400 Received: (qmail 1208 invoked from network); 6 Jul 2012 13:18:58 +0200 Received: from unknown (HELO us.es) (192.168.2.12) by us.es with SMTP; 6 Jul 2012 13:18:58 +0200 Received: (qmail 21055 invoked by uid 507); 6 Jul 2012 11:18:58 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on antivirus2 X-Spam-Level: X-Spam-Status: No, score=-97.2 required=7.5 tests=BAYES_50, RCVD_IN_BRBL_LASTEXT, RCVD_IN_PBL, RCVD_IN_SORBS_DUL, USER_IN_WHITELIST autolearn=disabled version=3.3.1 Received: from 127.0.0.1 by antivirus2 (envelope-from , uid 501) with qmail-scanner-2.08 (clamdscan: 0.97.5/15114. 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Processed in 0.030278 secs); 06 Jul 2012 11:18:58 -0000 Received: from unknown (HELO antivirus2) (127.0.0.1) by us.es with SMTP; 6 Jul 2012 11:18:58 -0000 Received: from 192.168.1.13 (192.168.1.13) by antivirus2 (F-Secure/fsigk_smtp/407/antivirus2); Fri, 06 Jul 2012 13:18:58 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/407/antivirus2) Received: (qmail 9614 invoked from network); 6 Jul 2012 13:18:57 +0200 Received: from f052137010.adsl.alicedsl.de (HELO localhost.localdomain) (pneira@us.es@78.52.137.10) by us.es with SMTP; 6 Jul 2012 13:18:57 +0200 From: pablo@netfilter.org To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org Subject: [PATCH 07/18] netfilter: nf_ct_tcp: merge tcpv[4, 6]_net_init into tcp_net_init Date: Fri, 6 Jul 2012 13:16:57 +0200 Message-Id: <1341573428-3204-8-git-send-email-pablo@netfilter.org> X-Mailer: git-send-email 1.7.10 In-Reply-To: <1341573428-3204-1-git-send-email-pablo@netfilter.org> References: <1341573428-3204-1-git-send-email-pablo@netfilter.org> Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org From: Gao feng Merge tcpv4_net_init and tcpv6_net_init into tcp_net_init to remove redundant code now that we have the u_int16_t proto parameter. And use nf_proto_net.users to identify if it's the first time we use the nf_proto_net, in that case, we initialize it. Signed-off-by: Gao feng Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_proto_tcp.c | 71 ++++++++++---------------------- 1 file changed, 21 insertions(+), 50 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 6db9d3c..44f0da8 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -1533,11 +1533,10 @@ static struct ctl_table tcp_compat_sysctl_table[] = { #endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */ #endif /* CONFIG_SYSCTL */ -static int tcp_kmemdup_sysctl_table(struct nf_proto_net *pn) +static int tcp_kmemdup_sysctl_table(struct nf_proto_net *pn, + struct nf_tcp_net *tn) { #ifdef CONFIG_SYSCTL - struct nf_tcp_net *tn = (struct nf_tcp_net *)pn; - if (pn->ctl_table) return 0; @@ -1564,11 +1563,11 @@ static int tcp_kmemdup_sysctl_table(struct nf_proto_net *pn) return 0; } -static int tcp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn) +static int tcp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn, + struct nf_tcp_net *tn) { #ifdef CONFIG_SYSCTL #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT - struct nf_tcp_net *tn = (struct nf_tcp_net *)pn; pn->ctl_compat_table = kmemdup(tcp_compat_sysctl_table, sizeof(tcp_compat_sysctl_table), GFP_KERNEL); @@ -1593,18 +1592,15 @@ static int tcp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn) return 0; } -static int tcpv4_init_net(struct net *net, u_int16_t proto) +static int tcp_init_net(struct net *net, u_int16_t proto) { - int i; - int ret = 0; + int ret; struct nf_tcp_net *tn = tcp_pernet(net); - struct nf_proto_net *pn = (struct nf_proto_net *)tn; + struct nf_proto_net *pn = &tn->pn; + + if (!pn->users) { + int i; -#ifdef CONFIG_SYSCTL - if (!pn->ctl_table) { -#else - if (!pn->users++) { -#endif for (i = 0; i < TCP_CONNTRACK_TIMEOUT_MAX; i++) tn->timeouts[i] = tcp_timeouts[i]; @@ -1613,45 +1609,20 @@ static int tcpv4_init_net(struct net *net, u_int16_t proto) tn->tcp_max_retrans = nf_ct_tcp_max_retrans; } - ret = tcp_kmemdup_compat_sysctl_table(pn); - - if (ret < 0) - return ret; + if (proto == AF_INET) { + ret = tcp_kmemdup_compat_sysctl_table(pn, tn); + if (ret < 0) + return ret; - ret = tcp_kmemdup_sysctl_table(pn); + ret = tcp_kmemdup_sysctl_table(pn, tn); + if (ret < 0) + nf_ct_kfree_compat_sysctl_table(pn); + } else + ret = tcp_kmemdup_sysctl_table(pn, tn); -#ifdef CONFIG_SYSCTL -#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT - if (ret < 0) { - kfree(pn->ctl_compat_table); - pn->ctl_compat_table = NULL; - } -#endif -#endif return ret; } -static int tcpv6_init_net(struct net *net, u_int16_t proto) -{ - int i; - struct nf_tcp_net *tn = tcp_pernet(net); - struct nf_proto_net *pn = (struct nf_proto_net *)tn; - -#ifdef CONFIG_SYSCTL - if (!pn->ctl_table) { -#else - if (!pn->users++) { -#endif - for (i = 0; i < TCP_CONNTRACK_TIMEOUT_MAX; i++) - tn->timeouts[i] = tcp_timeouts[i]; - tn->tcp_loose = nf_ct_tcp_loose; - tn->tcp_be_liberal = nf_ct_tcp_be_liberal; - tn->tcp_max_retrans = nf_ct_tcp_max_retrans; - } - - return tcp_kmemdup_sysctl_table(pn); -} - struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly = { .l3proto = PF_INET, @@ -1684,7 +1655,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly = .nla_policy = tcp_timeout_nla_policy, }, #endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ - .init_net = tcpv4_init_net, + .init_net = tcp_init_net, }; EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_tcp4); @@ -1720,6 +1691,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly = .nla_policy = tcp_timeout_nla_policy, }, #endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */ - .init_net = tcpv6_init_net, + .init_net = tcp_init_net, }; EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_tcp6);