diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 09:26:46 -0700 |
commit | 15c54033964a943de7b0763efd3bd0ede7326395 (patch) | |
tree | 840b292612d1b5396d5bab5bde537a9013db3ceb /net/ipv4/netfilter/ip_conntrack_standalone.c | |
parent | ad5da3cf39a5b11a198929be1f2644e17ecd767e (diff) | |
parent | 912a41a4ab935ce8c4308428ec13fc7f8b1f18f4 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
[IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
[IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
[IPV4]: Add multipath cached to feature-removal-schedule.txt
[WIRELESS] cfg80211: Clarify locking comment.
[WIRELESS] cfg80211: Fix locking in wiphy_new.
[WEXT] net_device: Don't include wext bits if not required.
[WEXT]: Misc code cleanups.
[WEXT]: Reduce inline abuse.
[WEXT]: Move EXPORT_SYMBOL statements where they belong.
[WEXT]: Cleanup early ioctl call path.
[WEXT]: Remove options.
[WEXT]: Remove dead debug code.
[WEXT]: Clean up how wext is called.
[WEXT]: Move to net/wireless
[AFS]: Eliminate cmpxchg() usage in vlocation code.
[RXRPC]: Fix pointers passed to bitops.
[RXRPC]: Remove bogus atomic_* overrides.
[AFS]: Fix u64 printing in debug logging.
[AFS]: Add "directory write" support.
[AFS]: Implement the CB.InitCallBackState3 operation.
...
Diffstat (limited to 'net/ipv4/netfilter/ip_conntrack_standalone.c')
-rw-r--r-- | net/ipv4/netfilter/ip_conntrack_standalone.c | 962 |
1 files changed, 0 insertions, 962 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c deleted file mode 100644 index 56b2f7546d1..00000000000 --- a/net/ipv4/netfilter/ip_conntrack_standalone.c +++ /dev/null @@ -1,962 +0,0 @@ -/* This file contains all the functions required for the standalone - ip_conntrack module. - - These are not required by the compatibility layer. -*/ - -/* (C) 1999-2001 Paul `Rusty' Russell - * (C) 2002-2005 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. - */ - -#include <linux/types.h> -#include <linux/ip.h> -#include <linux/netfilter.h> -#include <linux/netfilter_ipv4.h> -#include <linux/module.h> -#include <linux/skbuff.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/percpu.h> -#ifdef CONFIG_SYSCTL -#include <linux/sysctl.h> -#endif -#include <net/checksum.h> -#include <net/ip.h> -#include <net/route.h> - -#include <linux/netfilter_ipv4/ip_conntrack.h> -#include <linux/netfilter_ipv4/ip_conntrack_protocol.h> -#include <linux/netfilter_ipv4/ip_conntrack_core.h> -#include <linux/netfilter_ipv4/ip_conntrack_helper.h> - -#if 0 -#define DEBUGP printk -#else -#define DEBUGP(format, args...) -#endif - -MODULE_LICENSE("GPL"); - -extern atomic_t ip_conntrack_count; -DECLARE_PER_CPU(struct ip_conntrack_stat, ip_conntrack_stat); - -static int kill_proto(struct ip_conntrack *i, void *data) -{ - return (i->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum == - *((u_int8_t *) data)); -} - -#ifdef CONFIG_PROC_FS -static int -print_tuple(struct seq_file *s, const struct ip_conntrack_tuple *tuple, - struct ip_conntrack_protocol *proto) -{ - seq_printf(s, "src=%u.%u.%u.%u dst=%u.%u.%u.%u ", - NIPQUAD(tuple->src.ip), NIPQUAD(tuple->dst.ip)); - return proto->print_tuple(s, tuple); -} - -#ifdef CONFIG_IP_NF_CT_ACCT -static unsigned int -seq_print_counters(struct seq_file *s, - const struct ip_conntrack_counter *counter) -{ - return seq_printf(s, "packets=%llu bytes=%llu ", - (unsigned long long)counter->packets, - (unsigned long long)counter->bytes); -} -#else -#define seq_print_counters(x, y) 0 -#endif - -struct ct_iter_state { - unsigned int bucket; -}; - -static struct list_head *ct_get_first(struct seq_file *seq) -{ - struct ct_iter_state *st = seq->private; - - for (st->bucket = 0; - st->bucket < ip_conntrack_htable_size; - st->bucket++) { - if (!list_empty(&ip_conntrack_hash[st->bucket])) - return ip_conntrack_hash[st->bucket].next; - } - return NULL; -} - -static struct list_head *ct_get_next(struct seq_file *seq, struct list_head *head) -{ - struct ct_iter_state *st = seq->private; - - head = head->next; - while (head == &ip_conntrack_hash[st->bucket]) { - if (++st->bucket >= ip_conntrack_htable_size) - return NULL; - head = ip_conntrack_hash[st->bucket].next; - } - return head; -} - -static struct list_head *ct_get_idx(struct seq_file *seq, loff_t pos) -{ - struct list_head *head = ct_get_first(seq); - - if (head) - while (pos && (head = ct_get_next(seq, head))) - pos--; - return pos ? NULL : head; -} - -static void *ct_seq_start(struct seq_file *seq, loff_t *pos) -{ - read_lock_bh(&ip_conntrack_lock); - return ct_get_idx(seq, *pos); -} - -static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos) -{ - (*pos)++; - return ct_get_next(s, v); -} - -static void ct_seq_stop(struct seq_file *s, void *v) -{ - read_unlock_bh(&ip_conntrack_lock); -} - -static int ct_seq_show(struct seq_file *s, void *v) -{ - const struct ip_conntrack_tuple_hash *hash = v; - const struct ip_conntrack *conntrack = tuplehash_to_ctrack(hash); - struct ip_conntrack_protocol *proto; - - IP_NF_ASSERT(conntrack); - - /* we only want to print DIR_ORIGINAL */ - if (DIRECTION(hash)) - return 0; - - proto = __ip_conntrack_proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum); - IP_NF_ASSERT(proto); - - if (seq_printf(s, "%-8s %u %ld ", - 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; - - if (proto->print_conntrack(s, conntrack)) - return -ENOSPC; - - if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple, - proto)) - return -ENOSPC; - - if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL])) - return -ENOSPC; - - if (!(test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status))) - if (seq_printf(s, "[UNREPLIED] ")) - return -ENOSPC; - - if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple, - proto)) - return -ENOSPC; - - if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY])) - return -ENOSPC; - - if (test_bit(IPS_ASSURED_BIT, &conntrack->status)) - if (seq_printf(s, "[ASSURED] ")) - return -ENOSPC; - -#if defined(CONFIG_IP_NF_CONNTRACK_MARK) - if (seq_printf(s, "mark=%u ", conntrack->mark)) - return -ENOSPC; -#endif - -#ifdef CONFIG_IP_NF_CONNTRACK_SECMARK - if (seq_printf(s, "secmark=%u ", conntrack->secmark)) - return -ENOSPC; -#endif - - if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use))) - return -ENOSPC; - - return 0; -} - -static struct seq_operations ct_seq_ops = { - .start = ct_seq_start, - .next = ct_seq_next, - .stop = ct_seq_stop, - .show = ct_seq_show -}; - -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; -} - -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 = &ip_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(&ip_conntrack_lock); - - if (list_empty(e)) - return NULL; - - for (i = 0; i <= *pos; i++) { - e = e->next; - if (e == &ip_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 == &ip_conntrack_expect_list) - return NULL; - - return e; -} - -static void exp_seq_stop(struct seq_file *s, void *v) -{ - read_unlock_bh(&ip_conntrack_lock); -} - -static int exp_seq_show(struct seq_file *s, void *v) -{ - struct ip_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, "proto=%u ", expect->tuple.dst.protonum); - - print_tuple(s, &expect->tuple, - __ip_conntrack_proto_find(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 const struct file_operations exp_file_ops = { - .owner = THIS_MODULE, - .open = exp_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release -}; - -static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) -{ - int cpu; - - if (*pos == 0) - return SEQ_START_TOKEN; - - for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) { - if (!cpu_possible(cpu)) - continue; - *pos = cpu+1; - return &per_cpu(ip_conntrack_stat, cpu); - } - - return NULL; -} - -static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - int cpu; - - for (cpu = *pos; cpu < NR_CPUS; ++cpu) { - if (!cpu_possible(cpu)) - continue; - *pos = cpu+1; - return &per_cpu(ip_conntrack_stat, cpu); - } - - return NULL; -} - -static void ct_cpu_seq_stop(struct seq_file *seq, void *v) -{ -} - -static int ct_cpu_seq_show(struct seq_file *seq, void *v) -{ - unsigned int nr_conntracks = atomic_read(&ip_conntrack_count); - 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; - } - - seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x " - "%08x %08x %08x %08x %08x %08x %08x %08x \n", - nr_conntracks, - st->searched, - st->found, - st->new, - st->invalid, - st->ignore, - st->delete, - st->delete_list, - st->insert, - st->insert_failed, - st->drop, - st->early_drop, - st->error, - - st->expect_new, - st->expect_create, - st->expect_delete - ); - return 0; -} - -static struct seq_operations ct_cpu_seq_ops = { - .start = ct_cpu_seq_start, - .next = ct_cpu_seq_next, - .stop = ct_cpu_seq_stop, - .show = ct_cpu_seq_show, -}; - -static int ct_cpu_seq_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &ct_cpu_seq_ops); -} - -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, -}; -#endif - -static unsigned int ip_confirm(unsigned int hooknum, - struct sk_buff **pskb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - /* We've seen it coming out the other side: confirm it */ - return ip_conntrack_confirm(pskb); -} - -static unsigned int ip_conntrack_help(unsigned int hooknum, - struct sk_buff **pskb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - struct ip_conntrack *ct; - enum ip_conntrack_info ctinfo; - - /* This is where we call the helper: as the packet goes out. */ - ct = ip_conntrack_get(*pskb, &ctinfo); - if (ct && ct->helper && ctinfo != IP_CT_RELATED + IP_CT_IS_REPLY) { - unsigned int ret; - ret = ct->helper->help(pskb, ct, ctinfo); - if (ret != NF_ACCEPT) - return ret; - } - return NF_ACCEPT; -} - -static unsigned int ip_conntrack_defrag(unsigned int hooknum, - struct sk_buff **pskb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ -#if !defined(CONFIG_IP_NF_NAT) && !defined(CONFIG_IP_NF_NAT_MODULE) - /* Previously seen (loopback)? Ignore. Do this before - fragment check. */ - if ((*pskb)->nfct) - return NF_ACCEPT; -#endif - - /* Gather fragments. */ - if ((*pskb)->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) { - *pskb = ip_ct_gather_frags(*pskb, - hooknum == NF_IP_PRE_ROUTING ? - IP_DEFRAG_CONNTRACK_IN : - IP_DEFRAG_CONNTRACK_OUT); - if (!*pskb) - return NF_STOLEN; - } - return NF_ACCEPT; -} - -static unsigned int ip_conntrack_local(unsigned int hooknum, - struct sk_buff **pskb, - const struct net_device *in, - const struct net_device *out, - int (*okfn)(struct sk_buff *)) -{ - /* root is playing with raw sockets. */ - if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { - if (net_ratelimit()) - printk("ipt_hook: happy cracking.\n"); - return NF_ACCEPT; - } - return ip_conntrack_in(hooknum, pskb, in, out, okfn); -} - -/* Connection tracking may drop packets, but never alters them, so - make it the first hook. */ -static struct nf_hook_ops ip_conntrack_ops[] = { - { - .hook = ip_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_PRE_ROUTING, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { - .hook = ip_conntrack_in, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_PRE_ROUTING, - .priority = NF_IP_PRI_CONNTRACK, - }, - { - .hook = ip_conntrack_defrag, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_LOCAL_OUT, - .priority = NF_IP_PRI_CONNTRACK_DEFRAG, - }, - { - .hook = ip_conntrack_local, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_LOCAL_OUT, - .priority = NF_IP_PRI_CONNTRACK, - }, - { - .hook = ip_conntrack_help, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_POST_ROUTING, - .priority = NF_IP_PRI_CONNTRACK_HELPER, - }, - { - .hook = ip_conntrack_help, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_LOCAL_IN, - .priority = NF_IP_PRI_CONNTRACK_HELPER, - }, - { - .hook = ip_confirm, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_POST_ROUTING, - .priority = NF_IP_PRI_CONNTRACK_CONFIRM, - }, - { - .hook = ip_confirm, - .owner = THIS_MODULE, - .pf = PF_INET, - .hooknum = NF_IP_LOCAL_IN, - .priority = NF_IP_PRI_CONNTRACK_CONFIRM, - }, -}; - -/* Sysctl support */ - -int ip_conntrack_checksum __read_mostly = 1; - -#ifdef CONFIG_SYSCTL - -/* From ip_conntrack_core.c */ -extern int ip_conntrack_max; -extern unsigned int ip_conntrack_htable_size; - -/* From ip_conntrack_proto_tcp.c */ -extern unsigned int ip_ct_tcp_timeout_syn_sent; -extern unsigned int ip_ct_tcp_timeout_syn_recv; -extern unsigned int ip_ct_tcp_timeout_established; -extern unsigned int ip_ct_tcp_timeout_fin_wait; -extern unsigned int ip_ct_tcp_timeout_close_wait; -extern unsigned int ip_ct_tcp_timeout_last_ack; -extern unsigned int ip_ct_tcp_timeout_time_wait; -extern unsigned int ip_ct_tcp_timeout_close; -extern unsigned int ip_ct_tcp_timeout_max_retrans; -extern int ip_ct_tcp_loose; -extern int ip_ct_tcp_be_liberal; -extern int ip_ct_tcp_max_retrans; - -/* From ip_conntrack_proto_udp.c */ -extern unsigned int ip_ct_udp_timeout; -extern unsigned int ip_ct_udp_timeout_stream; - -/* From ip_conntrack_proto_icmp.c */ -extern unsigned int ip_ct_icmp_timeout; - -/* From ip_conntrack_proto_generic.c */ -extern unsigned int ip_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 *ip_ct_sysctl_header; - -static ctl_table ip_ct_sysctl_table[] = { - { - .ctl_name = NET_IPV4_NF_CONNTRACK_MAX, - .procname = "ip_conntrack_max", - .data = &ip_conntrack_max, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_COUNT, - .procname = "ip_conntrack_count", - .data = &ip_conntrack_count, - .maxlen = sizeof(int), - .mode = 0444, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_BUCKETS, - .procname = "ip_conntrack_buckets", - .data = &ip_conntrack_htable_size, - .maxlen = sizeof(unsigned int), - .mode = 0444, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_CHECKSUM, - .procname = "ip_conntrack_checksum", - .data = &ip_conntrack_checksum, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT, - .procname = "ip_conntrack_tcp_timeout_syn_sent", - .data = &ip_ct_tcp_timeout_syn_sent, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV, - .procname = "ip_conntrack_tcp_timeout_syn_recv", - .data = &ip_ct_tcp_timeout_syn_recv, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED, - .procname = "ip_conntrack_tcp_timeout_established", - .data = &ip_ct_tcp_timeout_established, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT, - .procname = "ip_conntrack_tcp_timeout_fin_wait", - .data = &ip_ct_tcp_timeout_fin_wait, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT, - .procname = "ip_conntrack_tcp_timeout_close_wait", - .data = &ip_ct_tcp_timeout_close_wait, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK, - .procname = "ip_conntrack_tcp_timeout_last_ack", - .data = &ip_ct_tcp_timeout_last_ack, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT, - .procname = "ip_conntrack_tcp_timeout_time_wait", - .data = &ip_ct_tcp_timeout_time_wait, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE, - .procname = "ip_conntrack_tcp_timeout_close", - .data = &ip_ct_tcp_timeout_close, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT, - .procname = "ip_conntrack_udp_timeout", - .data = &ip_ct_udp_timeout, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM, - .procname = "ip_conntrack_udp_timeout_stream", - .data = &ip_ct_udp_timeout_stream, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT, - .procname = "ip_conntrack_icmp_timeout", - .data = &ip_ct_icmp_timeout, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT, - .procname = "ip_conntrack_generic_timeout", - .data = &ip_ct_generic_timeout, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_LOG_INVALID, - .procname = "ip_conntrack_log_invalid", - .data = &ip_ct_log_invalid, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_minmax, - .strategy = &sysctl_intvec, - .extra1 = &log_invalid_proto_min, - .extra2 = &log_invalid_proto_max, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS, - .procname = "ip_conntrack_tcp_timeout_max_retrans", - .data = &ip_ct_tcp_timeout_max_retrans, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_LOOSE, - .procname = "ip_conntrack_tcp_loose", - .data = &ip_ct_tcp_loose, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL, - .procname = "ip_conntrack_tcp_be_liberal", - .data = &ip_ct_tcp_be_liberal, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, - { - .ctl_name = NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS, - .procname = "ip_conntrack_tcp_max_retrans", - .data = &ip_ct_tcp_max_retrans, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, - { .ctl_name = 0 } -}; - -#define NET_IP_CONNTRACK_MAX 2089 - -static ctl_table ip_ct_netfilter_table[] = { - { - .ctl_name = NET_IPV4_NETFILTER, - .procname = "netfilter", - .mode = 0555, - .child = ip_ct_sysctl_table, - }, - { - .ctl_name = NET_IP_CONNTRACK_MAX, - .procname = "ip_conntrack_max", - .data = &ip_conntrack_max, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }, - { .ctl_name = 0 } -}; - -static ctl_table ip_ct_ipv4_table[] = { - { - .ctl_name = NET_IPV4, - .procname = "ipv4", - .mode = 0555, - .child = ip_ct_netfilter_table, - }, - { .ctl_name = 0 } -}; - -static ctl_table ip_ct_net_table[] = { - { - .ctl_name = CTL_NET, - .procname = "net", - .mode = 0555, - .child = ip_ct_ipv4_table, - }, - { .ctl_name = 0 } -}; - -EXPORT_SYMBOL(ip_ct_log_invalid); -#endif /* CONFIG_SYSCTL */ - -/* FIXME: Allow NULL functions and sub in pointers to generic for - them. --RR */ -int ip_conntrack_protocol_register(struct ip_conntrack_protocol *proto) -{ - int ret = 0; - - write_lock_bh(&ip_conntrack_lock); - if (ip_ct_protos[proto->proto] != &ip_conntrack_generic_protocol) { - ret = -EBUSY; - goto out; - } - rcu_assign_pointer(ip_ct_protos[proto->proto], proto); - out: - write_unlock_bh(&ip_conntrack_lock); - return ret; -} - -void ip_conntrack_protocol_unregister(struct ip_conntrack_protocol *proto) -{ - write_lock_bh(&ip_conntrack_lock); - rcu_assign_pointer(ip_ct_protos[proto->proto], - &ip_conntrack_generic_protocol); - write_unlock_bh(&ip_conntrack_lock); - synchronize_rcu(); - - /* Remove all contrack entries for this protocol */ - ip_ct_iterate_cleanup(kill_proto, &proto->proto); -} - -static int __init ip_conntrack_standalone_init(void) -{ -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *proc, *proc_exp, *proc_stat; -#endif - int ret = 0; - - ret = ip_conntrack_init(); - if (ret < 0) - return ret; - -#ifdef CONFIG_PROC_FS - ret = -ENOMEM; - proc = proc_net_fops_create("ip_conntrack", 0440, &ct_file_ops); - if (!proc) goto cleanup_init; - - proc_exp = proc_net_fops_create("ip_conntrack_expect", 0440, - &exp_file_ops); - if (!proc_exp) goto cleanup_proc; - - proc_stat = create_proc_entry("ip_conntrack", S_IRUGO, proc_net_stat); - if (!proc_stat) - goto cleanup_proc_exp; - - proc_stat->proc_fops = &ct_cpu_seq_fops; - proc_stat->owner = THIS_MODULE; -#endif - - ret = nf_register_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops)); - if (ret < 0) { - printk("ip_conntrack: can't register hooks.\n"); - goto cleanup_proc_stat; - } -#ifdef CONFIG_SYSCTL - ip_ct_sysctl_header = register_sysctl_table(ip_ct_net_table); - if (ip_ct_sysctl_header == NULL) { - printk("ip_conntrack: can't register to sysctl.\n"); - ret = -ENOMEM; - goto cleanup_hooks; - } -#endif - return ret; - -#ifdef CONFIG_SYSCTL - cleanup_hooks: - nf_unregister_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops)); -#endif - cleanup_proc_stat: -#ifdef CONFIG_PROC_FS - remove_proc_entry("ip_conntrack", proc_net_stat); - cleanup_proc_exp: - proc_net_remove("ip_conntrack_expect"); - cleanup_proc: - proc_net_remove("ip_conntrack"); - cleanup_init: -#endif /* CONFIG_PROC_FS */ - ip_conntrack_cleanup(); - return ret; -} - -static void __exit ip_conntrack_standalone_fini(void) -{ - synchronize_net(); -#ifdef CONFIG_SYSCTL - unregister_sysctl_table(ip_ct_sysctl_header); -#endif - nf_unregister_hooks(ip_conntrack_ops, ARRAY_SIZE(ip_conntrack_ops)); -#ifdef CONFIG_PROC_FS - remove_proc_entry("ip_conntrack", proc_net_stat); - proc_net_remove("ip_conntrack_expect"); - proc_net_remove("ip_conntrack"); -#endif /* CONFIG_PROC_FS */ - ip_conntrack_cleanup(); -} - -module_init(ip_conntrack_standalone_init); -module_exit(ip_conntrack_standalone_fini); - -/* Some modules need us, but don't depend directly on any symbol. - They should call this. */ -void need_conntrack(void) -{ -} - -#ifdef CONFIG_IP_NF_CONNTRACK_EVENTS -EXPORT_SYMBOL_GPL(ip_conntrack_chain); -EXPORT_SYMBOL_GPL(ip_conntrack_expect_chain); -EXPORT_SYMBOL_GPL(ip_conntrack_register_notifier); -EXPORT_SYMBOL_GPL(ip_conntrack_unregister_notifier); -EXPORT_SYMBOL_GPL(__ip_ct_event_cache_init); -EXPORT_PER_CPU_SYMBOL_GPL(ip_conntrack_ecache); -#endif -EXPORT_SYMBOL(ip_conntrack_protocol_register); -EXPORT_SYMBOL(ip_conntrack_protocol_unregister); -EXPORT_SYMBOL(ip_ct_get_tuple); -EXPORT_SYMBOL(invert_tuplepr); -EXPORT_SYMBOL(ip_conntrack_alter_reply); -EXPORT_SYMBOL(ip_conntrack_destroyed); -EXPORT_SYMBOL(need_conntrack); -EXPORT_SYMBOL(ip_conntrack_helper_register); -EXPORT_SYMBOL(ip_conntrack_helper_unregister); -EXPORT_SYMBOL(ip_ct_iterate_cleanup); -EXPORT_SYMBOL(__ip_ct_refresh_acct); - -EXPORT_SYMBOL(ip_conntrack_expect_alloc); -EXPORT_SYMBOL(ip_conntrack_expect_put); -EXPORT_SYMBOL_GPL(__ip_conntrack_expect_find); -EXPORT_SYMBOL_GPL(ip_conntrack_expect_find_get); -EXPORT_SYMBOL(ip_conntrack_expect_related); -EXPORT_SYMBOL(ip_conntrack_unexpect_related); -EXPORT_SYMBOL_GPL(ip_conntrack_expect_list); -EXPORT_SYMBOL_GPL(ip_ct_unlink_expect); - -EXPORT_SYMBOL(ip_conntrack_tuple_taken); -EXPORT_SYMBOL(ip_ct_gather_frags); -EXPORT_SYMBOL(ip_conntrack_htable_size); -EXPORT_SYMBOL(ip_conntrack_lock); -EXPORT_SYMBOL(ip_conntrack_hash); -EXPORT_SYMBOL(ip_conntrack_untracked); -EXPORT_SYMBOL_GPL(ip_conntrack_find_get); -#ifdef CONFIG_IP_NF_NAT_NEEDED -EXPORT_SYMBOL(ip_conntrack_tcp_update); -#endif - -EXPORT_SYMBOL_GPL(ip_conntrack_flush); -EXPORT_SYMBOL_GPL(__ip_conntrack_find); - -EXPORT_SYMBOL_GPL(ip_conntrack_alloc); -EXPORT_SYMBOL_GPL(ip_conntrack_free); -EXPORT_SYMBOL_GPL(ip_conntrack_hash_insert); - -EXPORT_SYMBOL_GPL(ip_ct_remove_expectations); - -EXPORT_SYMBOL_GPL(ip_conntrack_helper_find_get); -EXPORT_SYMBOL_GPL(ip_conntrack_helper_put); -EXPORT_SYMBOL_GPL(__ip_conntrack_helper_find_byname); - -EXPORT_SYMBOL_GPL(ip_conntrack_proto_find_get); -EXPORT_SYMBOL_GPL(ip_conntrack_proto_put); -EXPORT_SYMBOL_GPL(__ip_conntrack_proto_find); -EXPORT_SYMBOL_GPL(ip_conntrack_checksum); -#if defined(CONFIG_IP_NF_CONNTRACK_NETLINK) || \ - defined(CONFIG_IP_NF_CONNTRACK_NETLINK_MODULE) -EXPORT_SYMBOL_GPL(ip_ct_port_tuple_to_nfattr); -EXPORT_SYMBOL_GPL(ip_ct_port_nfattr_to_tuple); -#endif |