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 07/13] netfilter: merge udpv[4,6]_net_init into udp_net_init
Date: Thu, 21 Jun 2012 22:36:44 +0800 [thread overview]
Message-ID: <1340289410-17642-7-git-send-email-gaofeng@cn.fujitsu.com> (raw)
In-Reply-To: <1340289410-17642-1-git-send-email-gaofeng@cn.fujitsu.com>
merge udpv4_net_init and udpv6_net_init into udp_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_udp.c | 65 +++++++++++--------------------
1 files changed, 23 insertions(+), 42 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 2b978e6..e7e0434 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -235,10 +235,10 @@ static struct ctl_table udp_compat_sysctl_table[] = {
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif /* CONFIG_SYSCTL */
-static int udp_kmemdup_sysctl_table(struct nf_proto_net *pn)
+static int udp_kmemdup_sysctl_table(struct nf_proto_net *pn,
+ struct nf_udp_net *un)
{
#ifdef CONFIG_SYSCTL
- struct nf_udp_net *un = (struct nf_udp_net *)pn;
if (pn->ctl_table)
return 0;
pn->ctl_table = kmemdup(udp_sysctl_table,
@@ -252,11 +252,11 @@ static int udp_kmemdup_sysctl_table(struct nf_proto_net *pn)
return 0;
}
-static int udp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn)
+static int udp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn,
+ struct nf_udp_net *un)
{
#ifdef CONFIG_SYSCTL
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
- struct nf_udp_net *un = (struct nf_udp_net *)pn;
pn->ctl_compat_table = kmemdup(udp_compat_sysctl_table,
sizeof(udp_compat_sysctl_table),
GFP_KERNEL);
@@ -270,50 +270,31 @@ static int udp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn)
return 0;
}
-static void udp_init_net_data(struct nf_udp_net *un)
-{
- int i;
-#ifdef CONFIG_SYSCTL
- if (!un->pn.ctl_table) {
-#else
- if (!un->pn.users++) {
-#endif
- for (i = 0; i < UDP_CT_MAX; i++)
- un->timeouts[i] = udp_timeouts[i];
- }
-}
-
-static int udpv4_init_net(struct net *net, u_int16_t proto)
+static int udp_init_net(struct net *net, u_int16_t proto)
{
int ret;
struct nf_udp_net *un = udp_pernet(net);
- struct nf_proto_net *pn = (struct nf_proto_net *)un;
-
- udp_init_net_data(un);
+ struct nf_proto_net *pn = &un->pn;
- ret = udp_kmemdup_compat_sysctl_table(pn);
- if (ret < 0)
- return ret;
+ if (!pn->users) {
+ int i;
- ret = udp_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;
+ for (i = 0; i < UDP_CT_MAX; i++)
+ un->timeouts[i] = udp_timeouts[i];
}
-#endif
-#endif
- return ret;
-}
-static int udpv6_init_net(struct net *net, u_int16_t proto)
-{
- struct nf_udp_net *un = udp_pernet(net);
- struct nf_proto_net *pn = (struct nf_proto_net *)un;
+ if (proto == AF_INET) {
+ ret = udp_kmemdup_compat_sysctl_table(pn, un);
+ if (ret < 0)
+ return ret;
- udp_init_net_data(un);
- return udp_kmemdup_sysctl_table(pn);
+ ret = udp_kmemdup_sysctl_table(pn, un);
+ if (ret < 0)
+ nf_ct_kfree_compat_sysctl_table(pn);
+ } else
+ ret = udp_kmemdup_sysctl_table(pn, un);
+
+ return ret;
}
struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly =
@@ -343,7 +324,7 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly =
.nla_policy = udp_timeout_nla_policy,
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
- .init_net = udpv4_init_net,
+ .init_net = udp_init_net,
};
EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp4);
@@ -374,6 +355,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly =
.nla_policy = udp_timeout_nla_policy,
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
- .init_net = udpv6_init_net,
+ .init_net = udp_init_net,
};
EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_udp6);
--
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 ` [PATCH 06/13] netfilter: merge tcpv[4,6]_net_init into tcp_net_init Gao feng
2012-06-21 14:36 ` Gao feng [this message]
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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