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@xxxxxxxxxxxxxx>
---
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;
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
--
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