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@@ -1,491 +0,0 @@
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-/* ip_conntrack proc compat - based on ip_conntrack_standalone.c
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- *
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- * (C) 1999-2001 Paul `Rusty' Russell
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- * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
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- * (C) 2006-2010 Patrick McHardy <kaber@trash.net>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- */
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-#include <linux/types.h>
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-#include <linux/proc_fs.h>
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-#include <linux/seq_file.h>
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-#include <linux/percpu.h>
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-#include <linux/security.h>
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-#include <net/net_namespace.h>
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-
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-#include <linux/netfilter.h>
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-#include <net/netfilter/nf_conntrack_core.h>
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-#include <net/netfilter/nf_conntrack_l3proto.h>
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-#include <net/netfilter/nf_conntrack_l4proto.h>
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-#include <net/netfilter/nf_conntrack_expect.h>
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-#include <net/netfilter/nf_conntrack_acct.h>
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-#include <linux/rculist_nulls.h>
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-#include <linux/export.h>
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-
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-struct ct_iter_state {
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- struct seq_net_private p;
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- struct hlist_nulls_head *hash;
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- unsigned int htable_size;
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- unsigned int bucket;
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-};
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-
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-static struct hlist_nulls_node *ct_get_first(struct seq_file *seq)
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-{
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- struct ct_iter_state *st = seq->private;
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- struct hlist_nulls_node *n;
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-
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- for (st->bucket = 0;
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- st->bucket < st->htable_size;
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- st->bucket++) {
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- n = rcu_dereference(
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- hlist_nulls_first_rcu(&st->hash[st->bucket]));
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- if (!is_a_nulls(n))
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- return n;
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- }
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- return NULL;
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-}
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-
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-static struct hlist_nulls_node *ct_get_next(struct seq_file *seq,
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- struct hlist_nulls_node *head)
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-{
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- struct ct_iter_state *st = seq->private;
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-
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- head = rcu_dereference(hlist_nulls_next_rcu(head));
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- while (is_a_nulls(head)) {
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- if (likely(get_nulls_value(head) == st->bucket)) {
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- if (++st->bucket >= st->htable_size)
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- return NULL;
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- }
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- head = rcu_dereference(
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- hlist_nulls_first_rcu(&st->hash[st->bucket]));
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- }
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- return head;
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-}
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-
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-static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos)
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-{
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- struct hlist_nulls_node *head = ct_get_first(seq);
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-
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- if (head)
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- while (pos && (head = ct_get_next(seq, head)))
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- pos--;
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- return pos ? NULL : head;
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-}
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-
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-static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
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- __acquires(RCU)
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-{
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- struct ct_iter_state *st = seq->private;
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-
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- rcu_read_lock();
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-
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- nf_conntrack_get_ht(&st->hash, &st->htable_size);
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- return ct_get_idx(seq, *pos);
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-}
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-
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-static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
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-{
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- (*pos)++;
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- return ct_get_next(s, v);
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-}
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-
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-static void ct_seq_stop(struct seq_file *s, void *v)
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- __releases(RCU)
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-{
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- rcu_read_unlock();
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-}
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-
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-#ifdef CONFIG_NF_CONNTRACK_SECMARK
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-static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
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-{
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- int ret;
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- u32 len;
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- char *secctx;
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-
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- ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
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- if (ret)
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- return;
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-
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- seq_printf(s, "secctx=%s ", secctx);
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-
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- security_release_secctx(secctx, len);
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-}
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-#else
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-static inline void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
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-{
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-}
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-#endif
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-
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-static bool ct_seq_should_skip(const struct nf_conn *ct,
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- const struct net *net,
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- const struct nf_conntrack_tuple_hash *hash)
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-{
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- /* we only want to print DIR_ORIGINAL */
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- if (NF_CT_DIRECTION(hash))
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- return true;
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-
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- if (nf_ct_l3num(ct) != AF_INET)
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- return true;
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-
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- if (!net_eq(nf_ct_net(ct), net))
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- return true;
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-
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- return false;
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-}
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-
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-static int ct_seq_show(struct seq_file *s, void *v)
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-{
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- struct nf_conntrack_tuple_hash *hash = v;
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- struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
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- const struct nf_conntrack_l3proto *l3proto;
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- const struct nf_conntrack_l4proto *l4proto;
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- int ret = 0;
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-
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- NF_CT_ASSERT(ct);
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- if (ct_seq_should_skip(ct, seq_file_net(s), hash))
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- return 0;
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-
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- if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use)))
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- return 0;
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-
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- /* check if we raced w. object reuse */
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- if (!nf_ct_is_confirmed(ct) ||
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- ct_seq_should_skip(ct, seq_file_net(s), hash))
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- goto release;
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-
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- l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
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- NF_CT_ASSERT(l3proto);
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- l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
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- NF_CT_ASSERT(l4proto);
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-
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- ret = -ENOSPC;
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- seq_printf(s, "%-8s %u %ld ",
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- l4proto->name, nf_ct_protonum(ct),
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- nf_ct_expires(ct) / HZ);
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-
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- if (l4proto->print_conntrack)
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- l4proto->print_conntrack(s, ct);
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-
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- if (seq_has_overflowed(s))
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- goto release;
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-
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- print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
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- l3proto, l4proto);
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-
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- if (seq_has_overflowed(s))
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- goto release;
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-
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- if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
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- goto release;
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-
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- if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
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- seq_printf(s, "[UNREPLIED] ");
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-
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- print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
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- l3proto, l4proto);
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-
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- if (seq_has_overflowed(s))
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- goto release;
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-
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- if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
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- goto release;
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-
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- if (test_bit(IPS_ASSURED_BIT, &ct->status))
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- seq_printf(s, "[ASSURED] ");
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-
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-#ifdef CONFIG_NF_CONNTRACK_MARK
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- seq_printf(s, "mark=%u ", ct->mark);
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-#endif
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-
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- ct_show_secctx(s, ct);
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-
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- seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use));
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-
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- if (seq_has_overflowed(s))
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- goto release;
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-
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- ret = 0;
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-release:
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- nf_ct_put(ct);
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- return ret;
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-}
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-
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-static const struct seq_operations ct_seq_ops = {
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- .start = ct_seq_start,
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- .next = ct_seq_next,
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- .stop = ct_seq_stop,
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- .show = ct_seq_show
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-};
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-
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-static int ct_open(struct inode *inode, struct file *file)
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-{
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- return seq_open_net(inode, file, &ct_seq_ops,
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- sizeof(struct ct_iter_state));
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-}
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-
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-static const struct file_operations ct_file_ops = {
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- .owner = THIS_MODULE,
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- .open = ct_open,
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- .read = seq_read,
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- .llseek = seq_lseek,
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- .release = seq_release_net,
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-};
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-
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-/* expects */
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-struct ct_expect_iter_state {
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- struct seq_net_private p;
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- unsigned int bucket;
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-};
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-
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-static struct hlist_node *ct_expect_get_first(struct seq_file *seq)
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-{
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- struct ct_expect_iter_state *st = seq->private;
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- struct hlist_node *n;
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-
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- for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) {
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- n = rcu_dereference(
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- hlist_first_rcu(&nf_ct_expect_hash[st->bucket]));
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- if (n)
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- return n;
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- }
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- return NULL;
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-}
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-
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-static struct hlist_node *ct_expect_get_next(struct seq_file *seq,
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- struct hlist_node *head)
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-{
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- struct ct_expect_iter_state *st = seq->private;
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-
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- head = rcu_dereference(hlist_next_rcu(head));
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- while (head == NULL) {
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- if (++st->bucket >= nf_ct_expect_hsize)
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- return NULL;
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- head = rcu_dereference(
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- hlist_first_rcu(&nf_ct_expect_hash[st->bucket]));
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- }
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- return head;
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-}
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-
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-static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos)
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-{
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- struct hlist_node *head = ct_expect_get_first(seq);
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-
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- if (head)
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- while (pos && (head = ct_expect_get_next(seq, head)))
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- pos--;
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- return pos ? NULL : head;
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-}
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-
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-static void *exp_seq_start(struct seq_file *seq, loff_t *pos)
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- __acquires(RCU)
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-{
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- rcu_read_lock();
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- return ct_expect_get_idx(seq, *pos);
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-}
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-
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-static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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-{
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- (*pos)++;
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- return ct_expect_get_next(seq, v);
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-}
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-
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-static void exp_seq_stop(struct seq_file *seq, void *v)
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- __releases(RCU)
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-{
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- rcu_read_unlock();
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-}
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-
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-static int exp_seq_show(struct seq_file *s, void *v)
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-{
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- struct nf_conntrack_expect *exp;
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- const struct hlist_node *n = v;
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-
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- exp = hlist_entry(n, struct nf_conntrack_expect, hnode);
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-
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- if (!net_eq(nf_ct_net(exp->master), seq_file_net(s)))
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- return 0;
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-
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- if (exp->tuple.src.l3num != AF_INET)
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- return 0;
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-
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- if (exp->timeout.function)
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- seq_printf(s, "%ld ", timer_pending(&exp->timeout)
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- ? (long)(exp->timeout.expires - jiffies)/HZ : 0);
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- else
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- seq_printf(s, "- ");
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-
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- seq_printf(s, "proto=%u ", exp->tuple.dst.protonum);
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-
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- print_tuple(s, &exp->tuple,
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- __nf_ct_l3proto_find(exp->tuple.src.l3num),
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- __nf_ct_l4proto_find(exp->tuple.src.l3num,
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- exp->tuple.dst.protonum));
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- seq_putc(s, '\n');
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-
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- return 0;
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-}
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-
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-static const struct seq_operations exp_seq_ops = {
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- .start = exp_seq_start,
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- .next = exp_seq_next,
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- .stop = exp_seq_stop,
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- .show = exp_seq_show
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-};
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-
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-static int exp_open(struct inode *inode, struct file *file)
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-{
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- return seq_open_net(inode, file, &exp_seq_ops,
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- sizeof(struct ct_expect_iter_state));
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-}
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-
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-static const struct file_operations ip_exp_file_ops = {
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- .owner = THIS_MODULE,
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- .open = exp_open,
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- .read = seq_read,
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- .llseek = seq_lseek,
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- .release = seq_release_net,
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-};
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-
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-static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
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-{
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- struct net *net = seq_file_net(seq);
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- int cpu;
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-
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- if (*pos == 0)
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- return SEQ_START_TOKEN;
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-
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- for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
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- if (!cpu_possible(cpu))
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- continue;
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- *pos = cpu+1;
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- return per_cpu_ptr(net->ct.stat, cpu);
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- }
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-
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- return NULL;
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-}
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-
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-static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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-{
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- struct net *net = seq_file_net(seq);
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- int cpu;
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-
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- for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
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- if (!cpu_possible(cpu))
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- continue;
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- *pos = cpu+1;
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- return per_cpu_ptr(net->ct.stat, cpu);
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- }
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-
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- return NULL;
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-}
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-
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-static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
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-{
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-}
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-
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-static int ct_cpu_seq_show(struct seq_file *seq, void *v)
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-{
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- struct net *net = seq_file_net(seq);
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- unsigned int nr_conntracks = atomic_read(&net->ct.count);
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- const struct ip_conntrack_stat *st = v;
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-
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- if (v == SEQ_START_TOKEN) {
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- 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 search_restart\n");
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- return 0;
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- }
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-
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- seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
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- "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
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- nr_conntracks,
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- st->searched,
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- st->found,
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- st->new,
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- st->invalid,
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- st->ignore,
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- st->delete,
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- st->delete_list,
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- st->insert,
|
|
|
- st->insert_failed,
|
|
|
- st->drop,
|
|
|
- st->early_drop,
|
|
|
- st->error,
|
|
|
-
|
|
|
- st->expect_new,
|
|
|
- st->expect_create,
|
|
|
- st->expect_delete,
|
|
|
- st->search_restart
|
|
|
- );
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static const 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_net(inode, file, &ct_cpu_seq_ops,
|
|
|
- sizeof(struct seq_net_private));
|
|
|
-}
|
|
|
-
|
|
|
-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_net,
|
|
|
-};
|
|
|
-
|
|
|
-static int __net_init ip_conntrack_net_init(struct net *net)
|
|
|
-{
|
|
|
- struct proc_dir_entry *proc, *proc_exp, *proc_stat;
|
|
|
-
|
|
|
- proc = proc_create("ip_conntrack", 0440, net->proc_net, &ct_file_ops);
|
|
|
- if (!proc)
|
|
|
- goto err1;
|
|
|
-
|
|
|
- proc_exp = proc_create("ip_conntrack_expect", 0440, net->proc_net,
|
|
|
- &ip_exp_file_ops);
|
|
|
- if (!proc_exp)
|
|
|
- goto err2;
|
|
|
-
|
|
|
- proc_stat = proc_create("ip_conntrack", S_IRUGO,
|
|
|
- net->proc_net_stat, &ct_cpu_seq_fops);
|
|
|
- if (!proc_stat)
|
|
|
- goto err3;
|
|
|
- return 0;
|
|
|
-
|
|
|
-err3:
|
|
|
- remove_proc_entry("ip_conntrack_expect", net->proc_net);
|
|
|
-err2:
|
|
|
- remove_proc_entry("ip_conntrack", net->proc_net);
|
|
|
-err1:
|
|
|
- return -ENOMEM;
|
|
|
-}
|
|
|
-
|
|
|
-static void __net_exit ip_conntrack_net_exit(struct net *net)
|
|
|
-{
|
|
|
- remove_proc_entry("ip_conntrack", net->proc_net_stat);
|
|
|
- remove_proc_entry("ip_conntrack_expect", net->proc_net);
|
|
|
- remove_proc_entry("ip_conntrack", net->proc_net);
|
|
|
-}
|
|
|
-
|
|
|
-static struct pernet_operations ip_conntrack_net_ops = {
|
|
|
- .init = ip_conntrack_net_init,
|
|
|
- .exit = ip_conntrack_net_exit,
|
|
|
-};
|
|
|
-
|
|
|
-int __init nf_conntrack_ipv4_compat_init(void)
|
|
|
-{
|
|
|
- return register_pernet_subsys(&ip_conntrack_net_ops);
|
|
|
-}
|
|
|
-
|
|
|
-void __exit nf_conntrack_ipv4_compat_fini(void)
|
|
|
-{
|
|
|
- unregister_pernet_subsys(&ip_conntrack_net_ops);
|
|
|
-}
|
Pablo Neira Ayuso