From: Gao feng <gaofeng@cn.fujitsu.com>
To: netfilter-devel@vger.kernel.org
Cc: pablo@netfilter.org, Gao feng <gaofeng@cn.fujitsu.com>
Subject: [PATCH nf-next v2 04/10] netfilter: xt_LOG: add net namespace support for xt_LOG
Date: Mon, 25 Mar 2013 17:50:42 +0800 [thread overview]
Message-ID: <1364205048-32632-4-git-send-email-gaofeng@cn.fujitsu.com> (raw)
In-Reply-To: <1364205048-32632-1-git-send-email-gaofeng@cn.fujitsu.com>
Add pernet_operations for xt_LOG, in pernet_ops,
we call nf_log_set/unset to set/unset nf_loggers
of per net.
Because the syslog ns has not been implemented,
we don't want the container DDOS the host's syslog.
so only enable ebt_log in init_net and wait for
syslog ns.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
---
net/netfilter/xt_LOG.c | 41 ++++++++++++++++++++++++++++++++++++++---
1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index fa40096..d396600 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -474,7 +474,13 @@ ipt_log_packet(u_int8_t pf,
const struct nf_loginfo *loginfo,
const char *prefix)
{
- struct sbuff *m = sb_open();
+ struct sbuff *m;
+ struct net *net = dev_net(in ? in : out);
+
+ if (!net_eq(net, &init_net))
+ return;
+
+ m = sb_open();
if (!loginfo)
loginfo = &default_loginfo;
@@ -798,7 +804,13 @@ ip6t_log_packet(u_int8_t pf,
const struct nf_loginfo *loginfo,
const char *prefix)
{
- struct sbuff *m = sb_open();
+ struct sbuff *m;
+ struct net *net = dev_net(in ? in : out);
+
+ if (!net_eq(net, &init_net))
+ return;
+
+ m = sb_open();
if (!loginfo)
loginfo = &default_loginfo;
@@ -893,6 +905,28 @@ static struct nf_logger ip6t_log_logger __read_mostly = {
};
#endif
+static int __net_init log_net_init(struct net *net)
+{
+ nf_log_set(net, NFPROTO_IPV4, &ipt_log_logger);
+#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
+ nf_log_set(net, NFPROTO_IPV6, &ip6t_log_logger);
+#endif
+ return 0;
+}
+
+static void __net_exit log_net_exit(struct net *net)
+{
+ nf_log_unset(net, &ipt_log_logger);
+#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
+ nf_log_unset(net, &ip6t_log_logger);
+#endif
+}
+
+static struct pernet_operations log_net_ops = {
+ .init = log_net_init,
+ .exit = log_net_exit,
+};
+
static int __init log_tg_init(void)
{
int ret;
@@ -905,11 +939,12 @@ static int __init log_tg_init(void)
#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
nf_log_register(NFPROTO_IPV6, &ip6t_log_logger);
#endif
- return 0;
+ return register_pernet_subsys(&log_net_ops);
}
static void __exit log_tg_exit(void)
{
+ unregister_pernet_subsys(&log_net_ops);
nf_log_unregister(&ipt_log_logger);
#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
nf_log_unregister(&ip6t_log_logger);
--
1.7.11.7
next prev parent reply other threads:[~2013-03-25 9:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-25 9:50 [PATCH nf-next v2 01/10] netfilter: make /proc/net/netfilter pernet Gao feng
2013-03-25 9:50 ` [PATCH nf-next v2 02/10] netfilter: nf_log: prepar net namespace support for nf_log Gao feng
2013-04-05 18:30 ` Pablo Neira Ayuso
2013-04-08 2:46 ` Gao feng
2013-03-25 9:50 ` [PATCH nf-next v2 03/10] netfilter: ebt_log: add net namespace support for ebt_log Gao feng
2013-04-05 18:32 ` Pablo Neira Ayuso
2013-04-08 2:50 ` Gao feng
2013-03-25 9:50 ` Gao feng [this message]
2013-04-05 18:33 ` [PATCH nf-next v2 04/10] netfilter: xt_LOG: add net namespace support for xt_LOG Pablo Neira Ayuso
2013-04-08 2:50 ` Gao feng
2013-03-25 9:50 ` [PATCH nf-next v2 05/10] netfilter: ebt_ulog: add net namesapce support for ebt_ulog Gao feng
2013-04-05 18:34 ` Pablo Neira Ayuso
2013-03-25 9:50 ` [PATCH nf-next v2 06/10] netfilter: ipt_ulog: add net namespace support for ipt_ulog Gao feng
2013-04-05 18:35 ` Pablo Neira Ayuso
2013-03-25 9:50 ` [PATCH nf-next v2 07/10] netfilter: nfnetlink_log: add net namespace support for nfnetlink_log Gao feng
2013-04-05 18:38 ` Pablo Neira Ayuso
2013-03-25 9:50 ` [PATCH nf-next v2 08/10] netfilter: nf_log: enable nflog in un-init net namespace Gao feng
2013-04-05 18:38 ` Pablo Neira Ayuso
2013-03-25 9:50 ` [PATCH nf-next v2 09/10] netfilter: nfnetlink_queue: add net namespace support for nfnetlink_queue Gao feng
2013-04-05 18:40 ` Pablo Neira Ayuso
2013-03-25 9:50 ` [PATCH nf-next v2 10/10] netfilter: remove useless variable proc_net_netfilter Gao feng
2013-04-05 18:45 ` Pablo Neira Ayuso
2013-04-08 2:56 ` Gao feng
2013-04-05 17:44 ` [PATCH nf-next v2 01/10] netfilter: make /proc/net/netfilter pernet Pablo Neira Ayuso
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