X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fnetfilter%2Fnf_conntrack_standalone.c;h=f1cb60ff9319bf1a9651c984157a04d16c592ff2;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=617599aeeead1c94aa7de5bda3fbd226ec5da3ae;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c index 617599aee..f1cb60ff9 100644 --- a/net/netfilter/nf_conntrack_standalone.c +++ b/net/netfilter/nf_conntrack_standalone.c @@ -17,7 +17,6 @@ * Derived from net/ipv4/netfilter/ip_conntrack_standalone.c */ -#include #include #include #include @@ -30,15 +29,12 @@ #include #endif -#define ASSERT_READ_LOCK(x) -#define ASSERT_WRITE_LOCK(x) - #include -#include -#include #include +#include +#include +#include #include -#include #if 0 #define DEBUGP printk @@ -48,33 +44,15 @@ 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) + struct nf_conntrack_l4proto *l4proto) { - return l3proto->print_tuple(s, tuple) || proto->print_tuple(s, tuple); + return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple); } +EXPORT_SYMBOL_GPL(print_tuple); #ifdef CONFIG_NF_CT_ACCT static unsigned int @@ -152,9 +130,8 @@ 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_l4proto *l4proto; - ASSERT_READ_LOCK(&nf_conntrack_lock); NF_CT_ASSERT(conntrack); /* we only want to print DIR_ORIGINAL */ @@ -165,16 +142,16 @@ static int ct_seq_show(struct seq_file *s, void *v) .tuple.src.l3num); NF_CT_ASSERT(l3proto); - proto = __nf_ct_proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL] + l4proto = __nf_ct_l4proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL] .tuple.src.l3num, conntrack->tuplehash[IP_CT_DIR_ORIGINAL] .tuple.dst.protonum); - NF_CT_ASSERT(proto); + NF_CT_ASSERT(l4proto); if (seq_printf(s, "%-8s %u %-8s %u %ld ", l3proto->name, conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num, - proto->name, + l4proto->name, conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum, timer_pending(&conntrack->timeout) ? (long)(conntrack->timeout.expires - jiffies)/HZ : 0) != 0) @@ -183,11 +160,11 @@ static int ct_seq_show(struct seq_file *s, void *v) if (l3proto->print_conntrack(s, conntrack)) return -ENOSPC; - if (proto->print_conntrack(s, conntrack)) + if (l4proto->print_conntrack(s, conntrack)) return -ENOSPC; if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple, - l3proto, proto)) + l3proto, l4proto)) return -ENOSPC; if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL])) @@ -198,7 +175,7 @@ static int ct_seq_show(struct seq_file *s, void *v) return -ENOSPC; if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple, - l3proto, proto)) + l3proto, l4proto)) return -ENOSPC; if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY])) @@ -213,6 +190,11 @@ static int ct_seq_show(struct seq_file *s, void *v) return -ENOSPC; #endif +#ifdef CONFIG_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; @@ -255,84 +237,6 @@ static struct file_operations ct_file_ops = { .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 -}; - static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) { int cpu; @@ -424,33 +328,10 @@ static struct file_operations ct_cpu_seq_fops = { /* 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 int nf_ct_tcp_timeout_syn_sent; -extern unsigned int nf_ct_tcp_timeout_syn_recv; -extern unsigned int nf_ct_tcp_timeout_established; -extern unsigned int nf_ct_tcp_timeout_fin_wait; -extern unsigned int nf_ct_tcp_timeout_close_wait; -extern unsigned int nf_ct_tcp_timeout_last_ack; -extern unsigned int nf_ct_tcp_timeout_time_wait; -extern unsigned int nf_ct_tcp_timeout_close; -extern unsigned int 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 int nf_ct_udp_timeout; -extern unsigned int nf_ct_udp_timeout_stream; - -/* From nf_conntrack_proto_generic.c */ -extern unsigned int nf_ct_generic_timeout; +int nf_conntrack_checksum __read_mostly = 1; +EXPORT_SYMBOL_GPL(nf_conntrack_checksum); +#ifdef CONFIG_SYSCTL /* Log invalid packets of a given protocol */ static int log_invalid_proto_min = 0; static int log_invalid_proto_max = 255; @@ -483,92 +364,12 @@ static ctl_table nf_ct_sysctl_table[] = { .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, + .ctl_name = NET_NF_CONNTRACK_CHECKSUM, + .procname = "nf_conntrack_checksum", + .data = &nf_conntrack_checksum, .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, - }, - { - .ctl_name = NET_NF_CONNTRACK_GENERIC_TIMEOUT, - .procname = "nf_conntrack_generic_timeout", - .data = &nf_ct_generic_timeout, - .maxlen = sizeof(unsigned int), - .mode = 0644, - .proc_handler = &proc_dointvec_jiffies, + .proc_handler = &proc_dointvec, }, { .ctl_name = NET_NF_CONNTRACK_LOG_INVALID, @@ -581,38 +382,6 @@ static ctl_table nf_ct_sysctl_table[] = { .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), - .mode = 0644, - .proc_handler = &proc_dointvec, - }, { .ctl_name = 0 } }; @@ -646,21 +415,19 @@ static ctl_table nf_ct_net_table[] = { }, { .ctl_name = 0 } }; -EXPORT_SYMBOL(nf_ct_log_invalid); +EXPORT_SYMBOL_GPL(nf_ct_log_invalid); #endif /* CONFIG_SYSCTL */ -static int init_or_cleanup(int init) +static int __init nf_conntrack_standalone_init(void) { #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; + return ret; #ifdef CONFIG_PROC_FS proc = proc_net_fops_create("nf_conntrack", 0440, &ct_file_ops); @@ -685,12 +452,9 @@ static int init_or_cleanup(int init) goto cleanup_proc_stat; } #endif - return ret; - cleanup: #ifdef CONFIG_SYSCTL - unregister_sysctl_table(nf_ct_sysctl_header); cleanup_proc_stat: #endif #ifdef CONFIG_PROC_FS @@ -702,190 +466,28 @@ static int init_or_cleanup(int init) cleanup_init: #endif /* CNFIG_PROC_FS */ nf_conntrack_cleanup(); - cleanup_nothing: - return ret; -} - -int nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto) -{ - 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); - return ret; } -void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto) -{ - 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); -} - -/* FIXME: Allow NULL functions and sub in pointers to generic for - them. --RR */ -int nf_conntrack_protocol_register(struct nf_conntrack_protocol *proto) -{ - 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); - } - - /* - * Just once because array is never freed until unloading - * nf_conntrack.ko - */ - goto retry; - } - - nf_ct_protos[proto->l3proto][proto->proto] = proto; - -out_unlock: - write_unlock_bh(&nf_conntrack_lock); -out: - return ret; -} - -void nf_conntrack_protocol_unregister(struct nf_conntrack_protocol *proto) -{ - 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); -} - -static int __init init(void) -{ - return init_or_cleanup(1); -} - -static void __exit fini(void) +static void __exit nf_conntrack_standalone_fini(void) { - init_or_cleanup(0); +#ifdef CONFIG_SYSCTL + unregister_sysctl_table(nf_ct_sysctl_header); +#endif +#ifdef CONFIG_PROC_FS + remove_proc_entry("nf_conntrack", proc_net_stat); + proc_net_remove("nf_conntrack_expect"); + proc_net_remove("nf_conntrack"); +#endif /* CNFIG_PROC_FS */ + nf_conntrack_cleanup(); } -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_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_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);