From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gao feng Subject: [PATCH 05/10] netfilter: merge tcpv[4,6]_net_init into tcp_net_init Date: Thu, 14 Jun 2012 18:07:20 +0800 Message-ID: <1339668445-23848-5-git-send-email-gaofeng@cn.fujitsu.com> References: <1339668445-23848-1-git-send-email-gaofeng@cn.fujitsu.com> Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, Gao feng To: pablo@netfilter.org Return-path: In-Reply-To: <1339668445-23848-1-git-send-email-gaofeng@cn.fujitsu.com> Sender: netdev-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org merge tcpv4_net_init and tcpv6_net_init into tcp_net_init to reduce the redundancy codes. and use nf_proto_net.users to identify if it's the first time we use the nf_proto_net. when it's the first time,we will initialized it. Signed-off-by: Gao feng --- net/netfilter/nf_conntrack_proto_tcp.c | 57 ++++++++------------------------ 1 files changed, 14 insertions(+), 43 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c index 6db9d3c..e3d5427 100644 --- a/net/netfilter/nf_conntrack_proto_tcp.c +++ b/net/netfilter/nf_conntrack_proto_tcp.c @@ -1593,18 +1593,14 @@ 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; 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 + if (!pn->users) { + int i = 0; 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 (proto == AF_INET) { + ret = tcp_kmemdup_compat_sysctl_table(pn); + if (ret < 0) + return ret; - if (ret < 0) - return ret; + ret = tcp_kmemdup_sysctl_table(pn); + if (ret < 0) + nf_ct_kfree_compat_sysctl_table(pn); + } else + ret = tcp_kmemdup_sysctl_table(pn); - ret = tcp_kmemdup_sysctl_table(pn); - -#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); -- 1.7.7.6