From: Gao feng <gaofeng@cn.fujitsu.com>
To: pablo@netfilter.org
Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
Gao feng <gaofeng@cn.fujitsu.com>
Subject: [PATCH 06/13] netfilter: merge tcpv[4,6]_net_init into tcp_net_init
Date: Thu, 21 Jun 2012 22:36:43 +0800 [thread overview]
Message-ID: <1340289410-17642-6-git-send-email-gaofeng@cn.fujitsu.com> (raw)
In-Reply-To: <1340289410-17642-1-git-send-email-gaofeng@cn.fujitsu.com>
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 | 71 +++++++++----------------------
1 files 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);
--
1.7.7.6
next prev parent reply other threads:[~2012-06-21 14:36 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-21 14:36 [PATCH 01/13] netfilter: fix problem with proto register Gao feng
2012-06-21 14:36 ` [PATCH 02/13] netfilter: add parameter proto for l4proto.init_net Gao feng
2012-06-21 14:36 ` [PATCH 03/13] netfilter: add nf_ct_kfree_compat_sysctl_table to make codes clear Gao feng
2012-06-21 14:36 ` [PATCH 04/13] netfilter: regard users as refcount for l4proto's per-net data Gao feng
2012-06-25 11:20 ` Pablo Neira Ayuso
2012-06-26 3:58 ` Gao feng
2012-06-26 14:47 ` Pablo Neira Ayuso
2012-06-27 1:34 ` Gao feng
2012-06-27 9:05 ` Pablo Neira Ayuso
2012-06-21 14:36 ` [PATCH 05/13] netfilter: fix memory leak when register sysctl failed Gao feng
2012-06-21 14:36 ` Gao feng [this message]
2012-06-21 14:36 ` [PATCH 07/13] netfilter: merge udpv[4,6]_net_init into udp_net_init Gao feng
2012-06-21 14:36 ` [PATCH 08/13] netfilter: nf_conntrack_l4proto_udplite[4,6] cleanup Gao feng
2012-06-21 14:36 ` [PATCH 09/13] netfilter: merge sctpv[4,6]_net_init into sctp_net_init Gao feng
2012-06-21 14:36 ` [PATCH 10/13] netfilter: nf_conntrack_l4proto_generic cleanup Gao feng
2012-06-21 14:36 ` [PATCH 11/13] netfilter: nf_conntrack_l4proto_dccp[4,6] cleanup Gao feng
2012-06-21 14:36 ` [PATCH 12/13] netfilter: nf_conntrack_l4proto_icmp cleanup Gao feng
2012-06-21 14:36 ` [PATCH 13/13] netfilter: nf_conntrack_l4proto_icmpv6 cleanup Gao feng
2012-06-25 11:12 ` [PATCH 01/13] netfilter: fix problem with proto register Pablo Neira Ayuso
2012-06-26 3:40 ` Gao feng
2012-06-26 14:36 ` Pablo Neira Ayuso
2012-06-27 1:38 ` Gao feng
2012-06-27 8:53 ` Pablo Neira Ayuso
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