| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1339425841-24171-12-git-send-email-pablo@netfilter.org>
Date: Mon, 11 Jun 2012 16:43:47 +0200
From: pablo@...filter.org
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH 11/25] netfilter: nf_ct_ipv4: add namespace support
From: Gao feng <gaofeng@...fujitsu.com>
This patch adds namespace support for IPv4 protocol tracker.
Acked-by: Eric W. Biederman <ebiederm@...ssion.com>
Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 123 ++++++++++++++++--------
1 file changed, 85 insertions(+), 38 deletions(-)
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 0c0fb90..5c66203 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -207,35 +207,30 @@ static int log_invalid_proto_max = 255;
static ctl_table ip_ct_sysctl_table[] = {
{
.procname = "ip_conntrack_max",
- .data = &nf_conntrack_max,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "ip_conntrack_count",
- .data = &init_net.ct.count,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec,
},
{
.procname = "ip_conntrack_buckets",
- .data = &init_net.ct.htable_size,
.maxlen = sizeof(unsigned int),
.mode = 0444,
.proc_handler = proc_dointvec,
},
{
.procname = "ip_conntrack_checksum",
- .data = &init_net.ct.sysctl_checksum,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "ip_conntrack_log_invalid",
- .data = &init_net.ct.sysctl_log_invalid,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
@@ -351,6 +346,25 @@ static struct nf_sockopt_ops so_getorigdst = {
.owner = THIS_MODULE,
};
+static int ipv4_init_net(struct net *net)
+{
+#if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
+ struct nf_ip_net *in = &net->ct.nf_ct_proto;
+ in->ctl_table = kmemdup(ip_ct_sysctl_table,
+ sizeof(ip_ct_sysctl_table),
+ GFP_KERNEL);
+ if (!in->ctl_table)
+ return -ENOMEM;
+
+ in->ctl_table[0].data = &nf_conntrack_max;
+ in->ctl_table[1].data = &net->ct.count;
+ in->ctl_table[2].data = &net->ct.htable_size;
+ in->ctl_table[3].data = &net->ct.sysctl_checksum;
+ in->ctl_table[4].data = &net->ct.sysctl_log_invalid;
+#endif
+ return 0;
+}
+
struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
.l3proto = PF_INET,
.name = "ipv4",
@@ -368,6 +382,7 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
.ctl_table_path = "net/ipv4/netfilter",
.ctl_table = ip_ct_sysctl_table,
#endif
+ .init_net = ipv4_init_net,
.me = THIS_MODULE,
};
@@ -378,6 +393,65 @@ MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET));
MODULE_ALIAS("ip_conntrack");
MODULE_LICENSE("GPL");
+static int ipv4_net_init(struct net *net)
+{
+ int ret = 0;
+
+ ret = nf_conntrack_l4proto_register(net,
+ &nf_conntrack_l4proto_tcp4);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l4proto_tcp4 :protocol register failed\n");
+ goto out_tcp;
+ }
+ ret = nf_conntrack_l4proto_register(net,
+ &nf_conntrack_l4proto_udp4);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l4proto_udp4 :protocol register failed\n");
+ goto out_udp;
+ }
+ ret = nf_conntrack_l4proto_register(net,
+ &nf_conntrack_l4proto_icmp);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l4proto_icmp4 :protocol register failed\n");
+ goto out_icmp;
+ }
+ ret = nf_conntrack_l3proto_register(net,
+ &nf_conntrack_l3proto_ipv4);
+ if (ret < 0) {
+ pr_err("nf_conntrack_l3proto_ipv4 :protocol register failed\n");
+ goto out_ipv4;
+ }
+ return 0;
+out_ipv4:
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_icmp);
+out_icmp:
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_udp4);
+out_udp:
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_tcp4);
+out_tcp:
+ return ret;
+}
+
+static void ipv4_net_exit(struct net *net)
+{
+ nf_conntrack_l3proto_unregister(net,
+ &nf_conntrack_l3proto_ipv4);
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_icmp);
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_udp4);
+ nf_conntrack_l4proto_unregister(net,
+ &nf_conntrack_l4proto_tcp4);
+}
+
+static struct pernet_operations ipv4_net_ops = {
+ .init = ipv4_net_init,
+ .exit = ipv4_net_exit,
+};
+
static int __init nf_conntrack_l3proto_ipv4_init(void)
{
int ret = 0;
@@ -391,35 +465,17 @@ static int __init nf_conntrack_l3proto_ipv4_init(void)
return ret;
}
- ret = nf_conntrack_l4proto_register(&init_net, &nf_conntrack_l4proto_tcp4);
+ ret = register_pernet_subsys(&ipv4_net_ops);
if (ret < 0) {
- pr_err("nf_conntrack_ipv4: can't register tcp.\n");
+ pr_err("nf_conntrack_ipv4: can't register pernet ops\n");
goto cleanup_sockopt;
}
- ret = nf_conntrack_l4proto_register(&init_net, &nf_conntrack_l4proto_udp4);
- if (ret < 0) {
- pr_err("nf_conntrack_ipv4: can't register udp.\n");
- goto cleanup_tcp;
- }
-
- ret = nf_conntrack_l4proto_register(&init_net, &nf_conntrack_l4proto_icmp);
- if (ret < 0) {
- pr_err("nf_conntrack_ipv4: can't register icmp.\n");
- goto cleanup_udp;
- }
-
- ret = nf_conntrack_l3proto_register(&init_net, &nf_conntrack_l3proto_ipv4);
- if (ret < 0) {
- pr_err("nf_conntrack_ipv4: can't register ipv4\n");
- goto cleanup_icmp;
- }
-
ret = nf_register_hooks(ipv4_conntrack_ops,
ARRAY_SIZE(ipv4_conntrack_ops));
if (ret < 0) {
pr_err("nf_conntrack_ipv4: can't register hooks.\n");
- goto cleanup_ipv4;
+ goto cleanup_pernet;
}
#if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
ret = nf_conntrack_ipv4_compat_init();
@@ -431,14 +487,8 @@ static int __init nf_conntrack_l3proto_ipv4_init(void)
cleanup_hooks:
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
#endif
- cleanup_ipv4:
- nf_conntrack_l3proto_unregister(&init_net, &nf_conntrack_l3proto_ipv4);
- cleanup_icmp:
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_icmp);
- cleanup_udp:
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_udp4);
- cleanup_tcp:
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_tcp4);
+ cleanup_pernet:
+ unregister_pernet_subsys(&ipv4_net_ops);
cleanup_sockopt:
nf_unregister_sockopt(&so_getorigdst);
return ret;
@@ -451,10 +501,7 @@ static void __exit nf_conntrack_l3proto_ipv4_fini(void)
nf_conntrack_ipv4_compat_fini();
#endif
nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops));
- nf_conntrack_l3proto_unregister(&init_net, &nf_conntrack_l3proto_ipv4);
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_icmp);
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_udp4);
- nf_conntrack_l4proto_unregister(&init_net, &nf_conntrack_l4proto_tcp4);
+ unregister_pernet_subsys(&ipv4_net_ops);
nf_unregister_sockopt(&so_getorigdst);
}
--
1.7.10
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists