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netfilter: nf_ct_icmp: add namespace support

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This patch adds namespace support for ICMPv6 protocol tracker.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
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 2012-05-28 21:04:15 +00:00 committed by Pablo Neira Ayuso
parent 4b626b9c5d
commit 7080ba0955
3 changed files with 26 additions and 2 deletions
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1
include/net/netns/conntrack.h
View File

@ -55,6 +55,7 @@ struct nf_ip_net {
struct nf_tcp_net tcp;
struct nf_udp_net udp;
struct nf_icmp_net icmp;
struct nf_icmp_net icmpv6;
#if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
struct ctl_table_header *ctl_table_header;
struct ctl_table *ctl_table;

25
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
View File

@ -29,6 +29,11 @@
static unsigned int nf_ct_icmpv6_timeout __read_mostly = 30*HZ;
static inline struct nf_icmp_net *icmpv6_pernet(struct net *net)
{
return &net->ct.nf_ct_proto.icmpv6;
}
static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
unsigned int dataoff,
struct nf_conntrack_tuple *tuple)
@ -90,7 +95,7 @@ static int icmpv6_print_tuple(struct seq_file *s,
static unsigned int *icmpv6_get_timeouts(struct net *net)
{
return &nf_ct_icmpv6_timeout;
return &icmpv6_pernet(net)->timeout;
}
/* Returns verdict for packet, or -1 for invalid. */
@ -319,7 +324,6 @@ static struct ctl_table_header *icmpv6_sysctl_header;
static struct ctl_table icmpv6_sysctl_table[] = {
{
.procname = "nf_conntrack_icmpv6_timeout",
.data = &nf_ct_icmpv6_timeout,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
@ -328,6 +332,22 @@ static struct ctl_table icmpv6_sysctl_table[] = {
};
#endif /* CONFIG_SYSCTL */
static int icmpv6_init_net(struct net *net)
{
struct nf_icmp_net *in = icmpv6_pernet(net);
struct nf_proto_net *pn = (struct nf_proto_net *)in;
in->timeout = nf_ct_icmpv6_timeout;
#ifdef CONFIG_SYSCTL
pn->ctl_table = kmemdup(icmpv6_sysctl_table,
sizeof(icmpv6_sysctl_table),
GFP_KERNEL);
if (!pn->ctl_table)
return -ENOMEM;
pn->ctl_table[0].data = &in->timeout;
#endif
return 0;
}
struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
{
.l3proto = PF_INET6,
@ -359,4 +379,5 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
.ctl_table_header = &icmpv6_sysctl_header,
.ctl_table = icmpv6_sysctl_table,
#endif
.init_net = icmpv6_init_net,
};

2
net/netfilter/nf_conntrack_proto.c
View File

@ -309,6 +309,8 @@ static struct nf_proto_net *nf_ct_l4proto_net(struct net *net,
return (struct nf_proto_net *)&net->ct.nf_ct_proto.udp;
case IPPROTO_ICMP:
return (struct nf_proto_net *)&net->ct.nf_ct_proto.icmp;
case IPPROTO_ICMPV6:
return (struct nf_proto_net *)&net->ct.nf_ct_proto.icmpv6;
case 255: /* l4proto_generic */
return (struct nf_proto_net *)&net->ct.nf_ct_proto.generic;
default: