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netfilter: nf_ct_sctp: merge sctpv[4,6]_net_init into sctp_net_init

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Merge sctpv4_net_init and sctpv6_net_init into sctp_net_init to
remove redundant code now that we have the u_int16_t proto
parameter.

And use nf_proto_net.users to identify if it's the first time
we use the nf_proto_net, in that case, we initialize i

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gao feng 2012-06-21 04:36:46 +00:00 committed by Pablo Neira Ayuso
parent 51b4c824fc
commit f42c4183c7
1 changed files with 24 additions and 45 deletions
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69
net/netfilter/nf_conntrack_proto_sctp.c
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@ -707,23 +707,10 @@ static struct ctl_table sctp_compat_sysctl_table[] = {
#endif /* CONFIG_NF_CONNTRACK_PROC_COMPAT */
#endif
static void sctp_init_net_data(struct sctp_net *sn)
{
int i;
#ifdef CONFIG_SYSCTL
if (!sn->pn.ctl_table) {
#else
if (!sn->pn.users++) {
#endif
for (i = 0; i < SCTP_CONNTRACK_MAX; i++)
sn->timeouts[i] = sctp_timeouts[i];
}
}
static int sctp_kmemdup_sysctl_table(struct nf_proto_net *pn)
static int sctp_kmemdup_sysctl_table(struct nf_proto_net *pn,
struct sctp_net *sn)
{
#ifdef CONFIG_SYSCTL
struct sctp_net *sn = (struct sctp_net *)pn;
if (pn->ctl_table)
return 0;
@ -744,11 +731,11 @@ static int sctp_kmemdup_sysctl_table(struct nf_proto_net *pn)
return 0;
}
static int sctp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn)
static int sctp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn,
struct sctp_net *sn)
{
#ifdef CONFIG_SYSCTL
#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
struct sctp_net *sn = (struct sctp_net *)pn;
pn->ctl_compat_table = kmemdup(sctp_compat_sysctl_table,
sizeof(sctp_compat_sysctl_table),
GFP_KERNEL);
@ -767,41 +754,33 @@ static int sctp_kmemdup_compat_sysctl_table(struct nf_proto_net *pn)
return 0;
}
static int sctpv4_init_net(struct net *net, u_int16_t proto)
static int sctp_init_net(struct net *net, u_int16_t proto)
{
int ret;
struct sctp_net *sn = sctp_pernet(net);
struct nf_proto_net *pn = (struct nf_proto_net *)sn;
struct nf_proto_net *pn = &sn->pn;
sctp_init_net_data(sn);
if (!pn->users) {
int i;
ret = sctp_kmemdup_compat_sysctl_table(pn);
if (ret < 0)
return ret;
ret = sctp_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 < SCTP_CONNTRACK_MAX; i++)
sn->timeouts[i] = sctp_timeouts[i];
}
#endif
#endif
if (proto == AF_INET) {
ret = sctp_kmemdup_compat_sysctl_table(pn, sn);
if (ret < 0)
return ret;
ret = sctp_kmemdup_sysctl_table(pn, sn);
if (ret < 0)
nf_ct_kfree_compat_sysctl_table(pn);
} else
ret = sctp_kmemdup_sysctl_table(pn, sn);
return ret;
}
static int sctpv6_init_net(struct net *net, u_int16_t proto)
{
struct sctp_net *sn = sctp_pernet(net);
struct nf_proto_net *pn = (struct nf_proto_net *)sn;
sctp_init_net_data(sn);
return sctp_kmemdup_sysctl_table(pn);
}
static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.l3proto = PF_INET,
.l4proto = IPPROTO_SCTP,
@ -833,7 +812,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
},
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
.net_id = &sctp_net_id,
.init_net = sctpv4_init_net,
.init_net = sctp_init_net,
};
static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
@ -867,7 +846,7 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
#endif /* CONFIG_NF_CT_NETLINK_TIMEOUT */
#endif
.net_id = &sctp_net_id,
.init_net = sctpv6_init_net,
.init_net = sctp_init_net,
};
static int sctp_net_init(struct net *net)