-/* This file contains all the functions required for the standalone
- nf_conntrack module.
-
- These are not required by the compatibility layer.
-*/
-
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
- * - generalize L3 protocol dependent part.
- *
- * Derived from net/ipv4/netfilter/ip_conntrack_standalone.c
*/
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/percpu.h>
#include <linux/netdevice.h>
+#include <net/net_namespace.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
-#define ASSERT_READ_LOCK(x)
-#define ASSERT_WRITE_LOCK(x)
-
#include <net/netfilter/nf_conntrack.h>
-#include <net/netfilter/nf_conntrack_l3proto.h>
-#include <net/netfilter/nf_conntrack_protocol.h>
#include <net/netfilter/nf_conntrack_core.h>
+#include <net/netfilter/nf_conntrack_l3proto.h>
+#include <net/netfilter/nf_conntrack_l4proto.h>
+#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_helper.h>
-#include <linux/netfilter_ipv4/listhelp.h>
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
+#include <net/netfilter/nf_conntrack_acct.h>
MODULE_LICENSE("GPL");
-extern atomic_t nf_conntrack_count;
-DECLARE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat);
-
-static int kill_l3proto(struct nf_conn *i, void *data)
-{
- return (i->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num ==
- ((struct nf_conntrack_l3proto *)data)->l3proto);
-}
-
-static int kill_proto(struct nf_conn *i, void *data)
-{
- struct nf_conntrack_protocol *proto;
- proto = (struct nf_conntrack_protocol *)data;
- return (i->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum ==
- proto->proto) &&
- (i->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num ==
- proto->l3proto);
-}
-
#ifdef CONFIG_PROC_FS
-static int
+int
print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
- struct nf_conntrack_l3proto *l3proto,
- struct nf_conntrack_protocol *proto)
-{
- return l3proto->print_tuple(s, tuple) || proto->print_tuple(s, tuple);
-}
-
-#ifdef CONFIG_NF_CT_ACCT
-static unsigned int
-seq_print_counters(struct seq_file *s,
- const struct ip_conntrack_counter *counter)
+ const struct nf_conntrack_l3proto *l3proto,
+ const struct nf_conntrack_l4proto *l4proto)
{
- return seq_printf(s, "packets=%llu bytes=%llu ",
- (unsigned long long)counter->packets,
- (unsigned long long)counter->bytes);
+ return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple);
}
-#else
-#define seq_print_counters(x, y) 0
-#endif
+EXPORT_SYMBOL_GPL(print_tuple);
struct ct_iter_state {
+ struct seq_net_private p;
unsigned int bucket;
};
-static struct list_head *ct_get_first(struct seq_file *seq)
+static struct hlist_nulls_node *ct_get_first(struct seq_file *seq)
{
+ struct net *net = seq_file_net(seq);
struct ct_iter_state *st = seq->private;
+ struct hlist_nulls_node *n;
for (st->bucket = 0;
- st->bucket < nf_conntrack_htable_size;
+ st->bucket < net->ct.htable_size;
st->bucket++) {
- if (!list_empty(&nf_conntrack_hash[st->bucket]))
- return nf_conntrack_hash[st->bucket].next;
+ n = rcu_dereference(net->ct.hash[st->bucket].first);
+ if (!is_a_nulls(n))
+ return n;
}
return NULL;
}
-static struct list_head *ct_get_next(struct seq_file *seq, struct list_head *head)
+static struct hlist_nulls_node *ct_get_next(struct seq_file *seq,
+ struct hlist_nulls_node *head)
{
+ struct net *net = seq_file_net(seq);
struct ct_iter_state *st = seq->private;
- head = head->next;
- while (head == &nf_conntrack_hash[st->bucket]) {
- if (++st->bucket >= nf_conntrack_htable_size)
- return NULL;
- head = nf_conntrack_hash[st->bucket].next;
+ head = rcu_dereference(head->next);
+ while (is_a_nulls(head)) {
+ if (likely(get_nulls_value(head) == st->bucket)) {
+ if (++st->bucket >= net->ct.htable_size)
+ return NULL;
+ }
+ head = rcu_dereference(net->ct.hash[st->bucket].first);
}
return head;
}
-static struct list_head *ct_get_idx(struct seq_file *seq, loff_t pos)
+static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos)
{
- struct list_head *head = ct_get_first(seq);
+ struct hlist_nulls_node *head = ct_get_first(seq);
if (head)
while (pos && (head = ct_get_next(seq, head)))
}
static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(RCU)
{
- read_lock_bh(&nf_conntrack_lock);
+ rcu_read_lock();
return ct_get_idx(seq, *pos);
}
}
static void ct_seq_stop(struct seq_file *s, void *v)
+ __releases(RCU)
{
- read_unlock_bh(&nf_conntrack_lock);
+ rcu_read_unlock();
}
/* return 0 on success, 1 in case of error */
static int ct_seq_show(struct seq_file *s, void *v)
{
- const struct nf_conntrack_tuple_hash *hash = v;
- const struct nf_conn *conntrack = nf_ct_tuplehash_to_ctrack(hash);
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_protocol *proto;
+ struct nf_conntrack_tuple_hash *hash = v;
+ struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
+ int ret = 0;
- ASSERT_READ_LOCK(&nf_conntrack_lock);
- NF_CT_ASSERT(conntrack);
+ NF_CT_ASSERT(ct);
+ if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use)))
+ return 0;
/* we only want to print DIR_ORIGINAL */
if (NF_CT_DIRECTION(hash))
- return 0;
-
- l3proto = __nf_ct_l3proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
- .tuple.src.l3num);
+ goto release;
+ l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
NF_CT_ASSERT(l3proto);
- proto = __nf_ct_proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
- .tuple.src.l3num,
- conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
- .tuple.dst.protonum);
- NF_CT_ASSERT(proto);
+ l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
+ NF_CT_ASSERT(l4proto);
+ ret = -ENOSPC;
if (seq_printf(s, "%-8s %u %-8s %u %ld ",
- l3proto->name,
- conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num,
- proto->name,
- conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
- timer_pending(&conntrack->timeout)
- ? (long)(conntrack->timeout.expires - jiffies)/HZ : 0) != 0)
- return -ENOSPC;
+ l3proto->name, nf_ct_l3num(ct),
+ l4proto->name, nf_ct_protonum(ct),
+ timer_pending(&ct->timeout)
+ ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
+ goto release;
- if (l3proto->print_conntrack(s, conntrack))
- return -ENOSPC;
+ if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
+ goto release;
- if (proto->print_conntrack(s, conntrack))
- return -ENOSPC;
+ if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
+ l3proto, l4proto))
+ goto release;
- if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
- l3proto, proto))
- return -ENOSPC;
+ if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
+ goto release;
- if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL]))
- return -ENOSPC;
-
- if (!(test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)))
+ if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
if (seq_printf(s, "[UNREPLIED] "))
- return -ENOSPC;
+ goto release;
- if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple,
- l3proto, proto))
- return -ENOSPC;
+ if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
+ l3proto, l4proto))
+ goto release;
- if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY]))
- return -ENOSPC;
+ if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
+ goto release;
- if (test_bit(IPS_ASSURED_BIT, &conntrack->status))
+ if (test_bit(IPS_ASSURED_BIT, &ct->status))
if (seq_printf(s, "[ASSURED] "))
- return -ENOSPC;
+ goto release;
#if defined(CONFIG_NF_CONNTRACK_MARK)
- if (seq_printf(s, "mark=%u ", conntrack->mark))
- return -ENOSPC;
+ if (seq_printf(s, "mark=%u ", ct->mark))
+ goto release;
+#endif
+
+#ifdef CONFIG_NF_CONNTRACK_SECMARK
+ if (seq_printf(s, "secmark=%u ", ct->secmark))
+ goto release;
#endif
- if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
- return -ENOSPC;
-
+ if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
+ goto release;
+
+ ret = 0;
+release:
+ nf_ct_put(ct);
return 0;
}
-static struct seq_operations ct_seq_ops = {
+static const struct seq_operations ct_seq_ops = {
.start = ct_seq_start,
.next = ct_seq_next,
.stop = ct_seq_stop,
static int ct_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- struct ct_iter_state *st;
- int ret;
-
- st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
- if (st == NULL)
- return -ENOMEM;
- ret = seq_open(file, &ct_seq_ops);
- if (ret)
- goto out_free;
- seq = file->private_data;
- seq->private = st;
- memset(st, 0, sizeof(struct ct_iter_state));
- return ret;
-out_free:
- kfree(st);
- return ret;
+ return seq_open_net(inode, file, &ct_seq_ops,
+ sizeof(struct ct_iter_state));
}
-static struct file_operations ct_file_ops = {
+static const struct file_operations ct_file_ops = {
.owner = THIS_MODULE,
.open = ct_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
-};
-
-/* expects */
-static void *exp_seq_start(struct seq_file *s, loff_t *pos)
-{
- struct list_head *e = &nf_conntrack_expect_list;
- loff_t i;
-
- /* strange seq_file api calls stop even if we fail,
- * thus we need to grab lock since stop unlocks */
- read_lock_bh(&nf_conntrack_lock);
-
- if (list_empty(e))
- return NULL;
-
- for (i = 0; i <= *pos; i++) {
- e = e->next;
- if (e == &nf_conntrack_expect_list)
- return NULL;
- }
- return e;
-}
-
-static void *exp_seq_next(struct seq_file *s, void *v, loff_t *pos)
-{
- struct list_head *e = v;
-
- ++*pos;
- e = e->next;
-
- if (e == &nf_conntrack_expect_list)
- return NULL;
-
- return e;
-}
-
-static void exp_seq_stop(struct seq_file *s, void *v)
-{
- read_unlock_bh(&nf_conntrack_lock);
-}
-
-static int exp_seq_show(struct seq_file *s, void *v)
-{
- struct nf_conntrack_expect *expect = v;
-
- if (expect->timeout.function)
- seq_printf(s, "%ld ", timer_pending(&expect->timeout)
- ? (long)(expect->timeout.expires - jiffies)/HZ : 0);
- else
- seq_printf(s, "- ");
- seq_printf(s, "l3proto = %u proto=%u ",
- expect->tuple.src.l3num,
- expect->tuple.dst.protonum);
- print_tuple(s, &expect->tuple,
- __nf_ct_l3proto_find(expect->tuple.src.l3num),
- __nf_ct_proto_find(expect->tuple.src.l3num,
- expect->tuple.dst.protonum));
- return seq_putc(s, '\n');
-}
-
-static struct seq_operations exp_seq_ops = {
- .start = exp_seq_start,
- .next = exp_seq_next,
- .stop = exp_seq_stop,
- .show = exp_seq_show
-};
-
-static int exp_open(struct inode *inode, struct file *file)
-{
- return seq_open(file, &exp_seq_ops);
-}
-
-static struct file_operations exp_file_ops = {
- .owner = THIS_MODULE,
- .open = exp_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release
+ .release = seq_release_net,
};
static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
{
+ struct net *net = seq_file_net(seq);
int cpu;
if (*pos == 0)
return SEQ_START_TOKEN;
- for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) {
+ for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
if (!cpu_possible(cpu))
continue;
*pos = cpu + 1;
- return &per_cpu(nf_conntrack_stat, cpu);
+ return per_cpu_ptr(net->ct.stat, cpu);
}
return NULL;
static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
+ struct net *net = seq_file_net(seq);
int cpu;
- for (cpu = *pos; cpu < NR_CPUS; ++cpu) {
+ for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
if (!cpu_possible(cpu))
continue;
*pos = cpu + 1;
- return &per_cpu(nf_conntrack_stat, cpu);
+ return per_cpu_ptr(net->ct.stat, cpu);
}
return NULL;
static int ct_cpu_seq_show(struct seq_file *seq, void *v)
{
- unsigned int nr_conntracks = atomic_read(&nf_conntrack_count);
- struct ip_conntrack_stat *st = v;
+ struct net *net = seq_file_net(seq);
+ unsigned int nr_conntracks = atomic_read(&net->ct.count);
+ const struct ip_conntrack_stat *st = v;
if (v == SEQ_START_TOKEN) {
seq_printf(seq, "entries searched found new invalid ignore delete delete_list insert insert_failed drop early_drop icmp_error expect_new expect_create expect_delete\n");
return 0;
}
-static struct seq_operations ct_cpu_seq_ops = {
+static const struct seq_operations ct_cpu_seq_ops = {
.start = ct_cpu_seq_start,
.next = ct_cpu_seq_next,
.stop = ct_cpu_seq_stop,
static int ct_cpu_seq_open(struct inode *inode, struct file *file)
{
- return seq_open(file, &ct_cpu_seq_ops);
+ return seq_open_net(inode, file, &ct_cpu_seq_ops,
+ sizeof(struct seq_net_private));
}
-static struct file_operations ct_cpu_seq_fops = {
+static const struct file_operations ct_cpu_seq_fops = {
.owner = THIS_MODULE,
.open = ct_cpu_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
+
+static int nf_conntrack_standalone_init_proc(struct net *net)
+{
+ struct proc_dir_entry *pde;
+
+ pde = proc_net_fops_create(net, "nf_conntrack", 0440, &ct_file_ops);
+ if (!pde)
+ goto out_nf_conntrack;
+
+ pde = proc_create("nf_conntrack", S_IRUGO, net->proc_net_stat,
+ &ct_cpu_seq_fops);
+ if (!pde)
+ goto out_stat_nf_conntrack;
+ return 0;
+
+out_stat_nf_conntrack:
+ proc_net_remove(net, "nf_conntrack");
+out_nf_conntrack:
+ return -ENOMEM;
+}
+
+static void nf_conntrack_standalone_fini_proc(struct net *net)
+{
+ remove_proc_entry("nf_conntrack", net->proc_net_stat);
+ proc_net_remove(net, "nf_conntrack");
+}
+#else
+static int nf_conntrack_standalone_init_proc(struct net *net)
+{
+ return 0;
+}
+
+static void nf_conntrack_standalone_fini_proc(struct net *net)
+{
+}
#endif /* CONFIG_PROC_FS */
/* Sysctl support */
#ifdef CONFIG_SYSCTL
-
-/* From nf_conntrack_core.c */
-extern int nf_conntrack_max;
-extern unsigned int nf_conntrack_htable_size;
-
-/* From nf_conntrack_proto_tcp.c */
-extern unsigned long nf_ct_tcp_timeout_syn_sent;
-extern unsigned long nf_ct_tcp_timeout_syn_recv;
-extern unsigned long nf_ct_tcp_timeout_established;
-extern unsigned long nf_ct_tcp_timeout_fin_wait;
-extern unsigned long nf_ct_tcp_timeout_close_wait;
-extern unsigned long nf_ct_tcp_timeout_last_ack;
-extern unsigned long nf_ct_tcp_timeout_time_wait;
-extern unsigned long nf_ct_tcp_timeout_close;
-extern unsigned long nf_ct_tcp_timeout_max_retrans;
-extern int nf_ct_tcp_loose;
-extern int nf_ct_tcp_be_liberal;
-extern int nf_ct_tcp_max_retrans;
-
-/* From nf_conntrack_proto_udp.c */
-extern unsigned long nf_ct_udp_timeout;
-extern unsigned long nf_ct_udp_timeout_stream;
-
-/* From nf_conntrack_proto_generic.c */
-extern unsigned long nf_ct_generic_timeout;
-
/* Log invalid packets of a given protocol */
static int log_invalid_proto_min = 0;
static int log_invalid_proto_max = 255;
-static struct ctl_table_header *nf_ct_sysctl_header;
+static struct ctl_table_header *nf_ct_netfilter_header;
static ctl_table nf_ct_sysctl_table[] = {
{
- .ctl_name = NET_NF_CONNTRACK_MAX,
.procname = "nf_conntrack_max",
.data = &nf_conntrack_max,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NF_CONNTRACK_COUNT,
.procname = "nf_conntrack_count",
- .data = &nf_conntrack_count,
+ .data = &init_net.ct.count,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NF_CONNTRACK_BUCKETS,
.procname = "nf_conntrack_buckets",
- .data = &nf_conntrack_htable_size,
+ .data = &init_net.ct.htable_size,
.maxlen = sizeof(unsigned int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT,
- .procname = "nf_conntrack_tcp_timeout_syn_sent",
- .data = &nf_ct_tcp_timeout_syn_sent,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV,
- .procname = "nf_conntrack_tcp_timeout_syn_recv",
- .data = &nf_ct_tcp_timeout_syn_recv,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED,
- .procname = "nf_conntrack_tcp_timeout_established",
- .data = &nf_ct_tcp_timeout_established,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT,
- .procname = "nf_conntrack_tcp_timeout_fin_wait",
- .data = &nf_ct_tcp_timeout_fin_wait,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT,
- .procname = "nf_conntrack_tcp_timeout_close_wait",
- .data = &nf_ct_tcp_timeout_close_wait,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK,
- .procname = "nf_conntrack_tcp_timeout_last_ack",
- .data = &nf_ct_tcp_timeout_last_ack,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT,
- .procname = "nf_conntrack_tcp_timeout_time_wait",
- .data = &nf_ct_tcp_timeout_time_wait,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE,
- .procname = "nf_conntrack_tcp_timeout_close",
- .data = &nf_ct_tcp_timeout_close,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_UDP_TIMEOUT,
- .procname = "nf_conntrack_udp_timeout",
- .data = &nf_ct_udp_timeout,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM,
- .procname = "nf_conntrack_udp_timeout_stream",
- .data = &nf_ct_udp_timeout_stream,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NF_CONNTRACK_GENERIC_TIMEOUT,
- .procname = "nf_conntrack_generic_timeout",
- .data = &nf_ct_generic_timeout,
+ .procname = "nf_conntrack_checksum",
+ .data = &init_net.ct.sysctl_checksum,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NF_CONNTRACK_LOG_INVALID,
.procname = "nf_conntrack_log_invalid",
- .data = &nf_ct_log_invalid,
+ .data = &init_net.ct.sysctl_log_invalid,
.maxlen = sizeof(unsigned int),
.mode = 0644,
- .proc_handler = &proc_dointvec_minmax,
- .strategy = &sysctl_intvec,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = &log_invalid_proto_min,
.extra2 = &log_invalid_proto_max,
},
{
- .ctl_name = NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS,
- .procname = "nf_conntrack_tcp_timeout_max_retrans",
- .data = &nf_ct_tcp_timeout_max_retrans,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_LOOSE,
- .procname = "nf_conntrack_tcp_loose",
- .data = &nf_ct_tcp_loose,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_BE_LIBERAL,
- .procname = "nf_conntrack_tcp_be_liberal",
- .data = &nf_ct_tcp_be_liberal,
- .maxlen = sizeof(unsigned int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_TCP_MAX_RETRANS,
- .procname = "nf_conntrack_tcp_max_retrans",
- .data = &nf_ct_tcp_max_retrans,
- .maxlen = sizeof(unsigned int),
+ .procname = "nf_conntrack_expect_max",
+ .data = &nf_ct_expect_max,
+ .maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
-
- { .ctl_name = 0 }
+ { }
};
#define NET_NF_CONNTRACK_MAX 2089
static ctl_table nf_ct_netfilter_table[] = {
{
- .ctl_name = NET_NETFILTER,
- .procname = "netfilter",
- .mode = 0555,
- .child = nf_ct_sysctl_table,
- },
- {
- .ctl_name = NET_NF_CONNTRACK_MAX,
.procname = "nf_conntrack_max",
.data = &nf_conntrack_max,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
- { .ctl_name = 0 }
+ { }
};
-static ctl_table nf_ct_net_table[] = {
- {
- .ctl_name = CTL_NET,
- .procname = "net",
- .mode = 0555,
- .child = nf_ct_netfilter_table,
- },
- { .ctl_name = 0 }
+static struct ctl_path nf_ct_path[] = {
+ { .procname = "net", },
+ { }
};
-EXPORT_SYMBOL(nf_ct_log_invalid);
-#endif /* CONFIG_SYSCTL */
-static int init_or_cleanup(int init)
+static int nf_conntrack_standalone_init_sysctl(struct net *net)
{
-#ifdef CONFIG_PROC_FS
- struct proc_dir_entry *proc, *proc_exp, *proc_stat;
-#endif
- int ret = 0;
-
- if (!init) goto cleanup;
-
- ret = nf_conntrack_init();
- if (ret < 0)
- goto cleanup_nothing;
+ struct ctl_table *table;
-#ifdef CONFIG_PROC_FS
- proc = proc_net_fops_create("nf_conntrack", 0440, &ct_file_ops);
- if (!proc) goto cleanup_init;
+ if (net_eq(net, &init_net)) {
+ nf_ct_netfilter_header =
+ register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table);
+ if (!nf_ct_netfilter_header)
+ goto out;
+ }
- proc_exp = proc_net_fops_create("nf_conntrack_expect", 0440,
- &exp_file_ops);
- if (!proc_exp) goto cleanup_proc;
+ table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
+ GFP_KERNEL);
+ if (!table)
+ goto out_kmemdup;
- proc_stat = create_proc_entry("nf_conntrack", S_IRUGO, proc_net_stat);
- if (!proc_stat)
- goto cleanup_proc_exp;
+ table[1].data = &net->ct.count;
+ table[2].data = &net->ct.htable_size;
+ table[3].data = &net->ct.sysctl_checksum;
+ table[4].data = &net->ct.sysctl_log_invalid;
- proc_stat->proc_fops = &ct_cpu_seq_fops;
- proc_stat->owner = THIS_MODULE;
-#endif
-#ifdef CONFIG_SYSCTL
- nf_ct_sysctl_header = register_sysctl_table(nf_ct_net_table, 0);
- if (nf_ct_sysctl_header == NULL) {
- printk("nf_conntrack: can't register to sysctl.\n");
- ret = -ENOMEM;
- goto cleanup_proc_stat;
- }
-#endif
+ net->ct.sysctl_header = register_net_sysctl_table(net,
+ nf_net_netfilter_sysctl_path, table);
+ if (!net->ct.sysctl_header)
+ goto out_unregister_netfilter;
- return ret;
+ return 0;
- cleanup:
-#ifdef CONFIG_SYSCTL
- unregister_sysctl_table(nf_ct_sysctl_header);
- cleanup_proc_stat:
-#endif
-#ifdef CONFIG_PROC_FS
- remove_proc_entry("nf_conntrack", proc_net_stat);
- cleanup_proc_exp:
- proc_net_remove("nf_conntrack_expect");
- cleanup_proc:
- proc_net_remove("nf_conntrack");
- cleanup_init:
-#endif /* CNFIG_PROC_FS */
- nf_conntrack_cleanup();
- cleanup_nothing:
- return ret;
+out_unregister_netfilter:
+ kfree(table);
+out_kmemdup:
+ if (net_eq(net, &init_net))
+ unregister_sysctl_table(nf_ct_netfilter_header);
+out:
+ printk("nf_conntrack: can't register to sysctl.\n");
+ return -ENOMEM;
}
-int nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto)
+static void nf_conntrack_standalone_fini_sysctl(struct net *net)
{
- int ret = 0;
-
- write_lock_bh(&nf_conntrack_lock);
- if (nf_ct_l3protos[proto->l3proto] != &nf_conntrack_generic_l3proto) {
- ret = -EBUSY;
- goto out;
- }
- nf_ct_l3protos[proto->l3proto] = proto;
-out:
- write_unlock_bh(&nf_conntrack_lock);
+ struct ctl_table *table;
- return ret;
+ if (net_eq(net, &init_net))
+ unregister_sysctl_table(nf_ct_netfilter_header);
+ table = net->ct.sysctl_header->ctl_table_arg;
+ unregister_net_sysctl_table(net->ct.sysctl_header);
+ kfree(table);
}
-
-void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto)
+#else
+static int nf_conntrack_standalone_init_sysctl(struct net *net)
{
- write_lock_bh(&nf_conntrack_lock);
- nf_ct_l3protos[proto->l3proto] = &nf_conntrack_generic_l3proto;
- write_unlock_bh(&nf_conntrack_lock);
-
- /* Somebody could be still looking at the proto in bh. */
- synchronize_net();
-
- /* Remove all contrack entries for this protocol */
- nf_ct_iterate_cleanup(kill_l3proto, proto);
+ return 0;
}
-/* FIXME: Allow NULL functions and sub in pointers to generic for
- them. --RR */
-int nf_conntrack_protocol_register(struct nf_conntrack_protocol *proto)
+static void nf_conntrack_standalone_fini_sysctl(struct net *net)
{
- int ret = 0;
-
-retry:
- write_lock_bh(&nf_conntrack_lock);
- if (nf_ct_protos[proto->l3proto]) {
- if (nf_ct_protos[proto->l3proto][proto->proto]
- != &nf_conntrack_generic_protocol) {
- ret = -EBUSY;
- goto out_unlock;
- }
- } else {
- /* l3proto may be loaded latter. */
- struct nf_conntrack_protocol **proto_array;
- int i;
-
- write_unlock_bh(&nf_conntrack_lock);
-
- proto_array = (struct nf_conntrack_protocol **)
- kmalloc(MAX_NF_CT_PROTO *
- sizeof(struct nf_conntrack_protocol *),
- GFP_KERNEL);
- if (proto_array == NULL) {
- ret = -ENOMEM;
- goto out;
- }
- for (i = 0; i < MAX_NF_CT_PROTO; i++)
- proto_array[i] = &nf_conntrack_generic_protocol;
-
- write_lock_bh(&nf_conntrack_lock);
- if (nf_ct_protos[proto->l3proto]) {
- /* bad timing, but no problem */
- write_unlock_bh(&nf_conntrack_lock);
- kfree(proto_array);
- } else {
- nf_ct_protos[proto->l3proto] = proto_array;
- write_unlock_bh(&nf_conntrack_lock);
- }
+}
+#endif /* CONFIG_SYSCTL */
- /*
- * Just once because array is never freed until unloading
- * nf_conntrack.ko
- */
- goto retry;
- }
+static int nf_conntrack_net_init(struct net *net)
+{
+ int ret;
- nf_ct_protos[proto->l3proto][proto->proto] = proto;
+ ret = nf_conntrack_init(net);
+ if (ret < 0)
+ goto out_init;
+ ret = nf_conntrack_standalone_init_proc(net);
+ if (ret < 0)
+ goto out_proc;
+ net->ct.sysctl_checksum = 1;
+ net->ct.sysctl_log_invalid = 0;
+ ret = nf_conntrack_standalone_init_sysctl(net);
+ if (ret < 0)
+ goto out_sysctl;
+ return 0;
-out_unlock:
- write_unlock_bh(&nf_conntrack_lock);
-out:
+out_sysctl:
+ nf_conntrack_standalone_fini_proc(net);
+out_proc:
+ nf_conntrack_cleanup(net);
+out_init:
return ret;
}
-void nf_conntrack_protocol_unregister(struct nf_conntrack_protocol *proto)
+static void nf_conntrack_net_exit(struct net *net)
{
- write_lock_bh(&nf_conntrack_lock);
- nf_ct_protos[proto->l3proto][proto->proto]
- = &nf_conntrack_generic_protocol;
- write_unlock_bh(&nf_conntrack_lock);
-
- /* Somebody could be still looking at the proto in bh. */
- synchronize_net();
-
- /* Remove all contrack entries for this protocol */
- nf_ct_iterate_cleanup(kill_proto, proto);
+ nf_conntrack_standalone_fini_sysctl(net);
+ nf_conntrack_standalone_fini_proc(net);
+ nf_conntrack_cleanup(net);
}
-static int __init init(void)
+static struct pernet_operations nf_conntrack_net_ops = {
+ .init = nf_conntrack_net_init,
+ .exit = nf_conntrack_net_exit,
+};
+
+static int __init nf_conntrack_standalone_init(void)
{
- return init_or_cleanup(1);
+ return register_pernet_subsys(&nf_conntrack_net_ops);
}
-static void __exit fini(void)
+static void __exit nf_conntrack_standalone_fini(void)
{
- init_or_cleanup(0);
+ unregister_pernet_subsys(&nf_conntrack_net_ops);
}
-module_init(init);
-module_exit(fini);
+module_init(nf_conntrack_standalone_init);
+module_exit(nf_conntrack_standalone_fini);
/* Some modules need us, but don't depend directly on any symbol.
They should call this. */
-void need_nf_conntrack(void)
+void need_conntrack(void)
{
}
-
-#ifdef CONFIG_NF_CONNTRACK_EVENTS
-EXPORT_SYMBOL_GPL(nf_conntrack_chain);
-EXPORT_SYMBOL_GPL(nf_conntrack_expect_chain);
-EXPORT_SYMBOL_GPL(nf_conntrack_register_notifier);
-EXPORT_SYMBOL_GPL(nf_conntrack_unregister_notifier);
-EXPORT_SYMBOL_GPL(__nf_ct_event_cache_init);
-EXPORT_PER_CPU_SYMBOL_GPL(nf_conntrack_ecache);
-EXPORT_SYMBOL_GPL(nf_ct_deliver_cached_events);
-#endif
-EXPORT_SYMBOL(nf_conntrack_l3proto_register);
-EXPORT_SYMBOL(nf_conntrack_l3proto_unregister);
-EXPORT_SYMBOL(nf_conntrack_protocol_register);
-EXPORT_SYMBOL(nf_conntrack_protocol_unregister);
-EXPORT_SYMBOL(nf_ct_invert_tuplepr);
-EXPORT_SYMBOL(nf_conntrack_alter_reply);
-EXPORT_SYMBOL(nf_conntrack_destroyed);
-EXPORT_SYMBOL(need_nf_conntrack);
-EXPORT_SYMBOL(nf_conntrack_helper_register);
-EXPORT_SYMBOL(nf_conntrack_helper_unregister);
-EXPORT_SYMBOL(nf_ct_iterate_cleanup);
-EXPORT_SYMBOL(__nf_ct_refresh_acct);
-EXPORT_SYMBOL(nf_ct_protos);
-EXPORT_SYMBOL(__nf_ct_proto_find);
-EXPORT_SYMBOL(nf_ct_proto_find_get);
-EXPORT_SYMBOL(nf_ct_proto_put);
-EXPORT_SYMBOL(nf_ct_l3proto_find_get);
-EXPORT_SYMBOL(nf_ct_l3proto_put);
-EXPORT_SYMBOL(nf_ct_l3protos);
-EXPORT_SYMBOL(nf_conntrack_expect_alloc);
-EXPORT_SYMBOL(nf_conntrack_expect_put);
-EXPORT_SYMBOL(nf_conntrack_expect_related);
-EXPORT_SYMBOL(nf_conntrack_unexpect_related);
-EXPORT_SYMBOL(nf_conntrack_tuple_taken);
-EXPORT_SYMBOL(nf_conntrack_htable_size);
-EXPORT_SYMBOL(nf_conntrack_lock);
-EXPORT_SYMBOL(nf_conntrack_hash);
-EXPORT_SYMBOL(nf_conntrack_untracked);
-EXPORT_SYMBOL_GPL(nf_conntrack_find_get);
-#ifdef CONFIG_IP_NF_NAT_NEEDED
-EXPORT_SYMBOL(nf_conntrack_tcp_update);
-#endif
-EXPORT_SYMBOL(__nf_conntrack_confirm);
-EXPORT_SYMBOL(nf_ct_get_tuple);
-EXPORT_SYMBOL(nf_ct_invert_tuple);
-EXPORT_SYMBOL(nf_conntrack_in);
-EXPORT_SYMBOL(__nf_conntrack_attach);
-EXPORT_SYMBOL(nf_conntrack_alloc);
-EXPORT_SYMBOL(nf_conntrack_free);
-EXPORT_SYMBOL(nf_conntrack_flush);
-EXPORT_SYMBOL(nf_ct_remove_expectations);
-EXPORT_SYMBOL(nf_ct_helper_find_get);
-EXPORT_SYMBOL(nf_ct_helper_put);
-EXPORT_SYMBOL(__nf_conntrack_helper_find_byname);
-EXPORT_SYMBOL(__nf_conntrack_find);
-EXPORT_SYMBOL(nf_ct_unlink_expect);
-EXPORT_SYMBOL(nf_conntrack_hash_insert);
-EXPORT_SYMBOL(__nf_conntrack_expect_find);
-EXPORT_SYMBOL(nf_conntrack_expect_find);
-EXPORT_SYMBOL(nf_conntrack_expect_list);
-#if defined(CONFIG_NF_CT_NETLINK) || \
- defined(CONFIG_NF_CT_NETLINK_MODULE)
-EXPORT_SYMBOL(nf_ct_port_tuple_to_nfattr);
-EXPORT_SYMBOL(nf_ct_port_nfattr_to_tuple);
-#endif
+EXPORT_SYMBOL_GPL(need_conntrack);
Code Review / linux-2.6.git / blobdiff