Patchwork [net-next,v2,05/12] netfilter: merge tcpv[4,6]_net_init into tcp_net_init

login
register
mail settings
Submitter Gao feng
Date June 16, 2012, 3:41 a.m.
Message ID <1339818083-31356-5-git-send-email-gaofeng@cn.fujitsu.com>
Download mbox | patch
Permalink /patch/165269/
State Superseded
Headers show

Comments

Gao feng - June 16, 2012, 3:41 a.m.
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 <gaofeng@cn.fujitsu.com>
---
 net/netfilter/nf_conntrack_proto_tcp.c |   61 ++++++++-----------------------
 1 files changed, 16 insertions(+), 45 deletions(-)
Pablo Neira - June 16, 2012, 10:55 a.m.
On Sat, Jun 16, 2012 at 11:41:16AM +0800, Gao feng wrote:
> 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 <gaofeng@cn.fujitsu.com>
> ---
>  net/netfilter/nf_conntrack_proto_tcp.c |   61 ++++++++-----------------------
>  1 files changed, 16 insertions(+), 45 deletions(-)
> 
> diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
> index 6db9d3c..f2dda9e 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;
> +	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;
>  
> -#ifdef CONFIG_SYSCTL
> -	if (!pn->ctl_table) {
> -#else
> -	if (!pn->users++) {
> -#endif
> +	if (!pn->users) {
> +		int i;

Extra line missing after int i;

>  		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
> 
--
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Patch

diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 6db9d3c..f2dda9e 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;
+	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;
 
-#ifdef CONFIG_SYSCTL
-	if (!pn->ctl_table) {
-#else
-	if (!pn->users++) {
-#endif
+	if (!pn->users) {
+		int i;
 		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);