diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c')
-rw-r--r-- | kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c new file mode 100644 index 000000000..f0dfe92a0 --- /dev/null +++ b/kernel/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c @@ -0,0 +1,469 @@ +/* ip_conntrack proc compat - based on ip_conntrack_standalone.c + * + * (C) 1999-2001 Paul `Rusty' Russell + * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org> + * (C) 2006-2010 Patrick McHardy <kaber@trash.net> + * + * 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/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/percpu.h> +#include <linux/security.h> +#include <net/net_namespace.h> + +#include <linux/netfilter.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_acct.h> +#include <linux/rculist_nulls.h> +#include <linux/export.h> + +struct ct_iter_state { + struct seq_net_private p; + unsigned int bucket; +}; + +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 < net->ct.htable_size; + st->bucket++) { + n = rcu_dereference( + hlist_nulls_first_rcu(&net->ct.hash[st->bucket])); + if (!is_a_nulls(n)) + return n; + } + return NULL; +} + +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 = rcu_dereference(hlist_nulls_next_rcu(head)); + 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( + hlist_nulls_first_rcu(&net->ct.hash[st->bucket])); + } + return head; +} + +static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos) +{ + struct hlist_nulls_node *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) + __acquires(RCU) +{ + rcu_read_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) + __releases(RCU) +{ + rcu_read_unlock(); +} + +#ifdef CONFIG_NF_CONNTRACK_SECMARK +static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ + int ret; + u32 len; + char *secctx; + + ret = security_secid_to_secctx(ct->secmark, &secctx, &len); + if (ret) + return; + + seq_printf(s, "secctx=%s ", secctx); + + security_release_secctx(secctx, len); +} +#else +static inline void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct) +{ +} +#endif + +static int ct_seq_show(struct seq_file *s, void *v) +{ + 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; + + 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)) + goto release; + if (nf_ct_l3num(ct) != AF_INET) + goto release; + + l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); + NF_CT_ASSERT(l3proto); + l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); + NF_CT_ASSERT(l4proto); + + ret = -ENOSPC; + seq_printf(s, "%-8s %u %ld ", + l4proto->name, nf_ct_protonum(ct), + timer_pending(&ct->timeout) + ? (long)(ct->timeout.expires - jiffies)/HZ : 0); + + if (l4proto->print_conntrack) + l4proto->print_conntrack(s, ct); + + if (seq_has_overflowed(s)) + goto release; + + print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, + l3proto, l4proto); + + if (seq_has_overflowed(s)) + goto release; + + if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL)) + goto release; + + if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status))) + seq_printf(s, "[UNREPLIED] "); + + print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, + l3proto, l4proto); + + if (seq_has_overflowed(s)) + goto release; + + if (seq_print_acct(s, ct, IP_CT_DIR_REPLY)) + goto release; + + if (test_bit(IPS_ASSURED_BIT, &ct->status)) + seq_printf(s, "[ASSURED] "); + +#ifdef CONFIG_NF_CONNTRACK_MARK + seq_printf(s, "mark=%u ", ct->mark); +#endif + + ct_show_secctx(s, ct); + + seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)); + + if (seq_has_overflowed(s)) + goto release; + + ret = 0; +release: + nf_ct_put(ct); + return ret; +} + +static const 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) +{ + return seq_open_net(inode, file, &ct_seq_ops, + sizeof(struct ct_iter_state)); +} + +static const struct file_operations ct_file_ops = { + .owner = THIS_MODULE, + .open = ct_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +/* expects */ +struct ct_expect_iter_state { + struct seq_net_private p; + unsigned int bucket; +}; + +static struct hlist_node *ct_expect_get_first(struct seq_file *seq) +{ + struct net *net = seq_file_net(seq); + struct ct_expect_iter_state *st = seq->private; + struct hlist_node *n; + + for (st->bucket = 0; st->bucket < nf_ct_expect_hsize; st->bucket++) { + n = rcu_dereference( + hlist_first_rcu(&net->ct.expect_hash[st->bucket])); + if (n) + return n; + } + return NULL; +} + +static struct hlist_node *ct_expect_get_next(struct seq_file *seq, + struct hlist_node *head) +{ + struct net *net = seq_file_net(seq); + struct ct_expect_iter_state *st = seq->private; + + head = rcu_dereference(hlist_next_rcu(head)); + while (head == NULL) { + if (++st->bucket >= nf_ct_expect_hsize) + return NULL; + head = rcu_dereference( + hlist_first_rcu(&net->ct.expect_hash[st->bucket])); + } + return head; +} + +static struct hlist_node *ct_expect_get_idx(struct seq_file *seq, loff_t pos) +{ + struct hlist_node *head = ct_expect_get_first(seq); + + if (head) + while (pos && (head = ct_expect_get_next(seq, head))) + pos--; + return pos ? NULL : head; +} + +static void *exp_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(RCU) +{ + rcu_read_lock(); + return ct_expect_get_idx(seq, *pos); +} + +static void *exp_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + (*pos)++; + return ct_expect_get_next(seq, v); +} + +static void exp_seq_stop(struct seq_file *seq, void *v) + __releases(RCU) +{ + rcu_read_unlock(); +} + +static int exp_seq_show(struct seq_file *s, void *v) +{ + struct nf_conntrack_expect *exp; + const struct hlist_node *n = v; + + exp = hlist_entry(n, struct nf_conntrack_expect, hnode); + + if (exp->tuple.src.l3num != AF_INET) + return 0; + + if (exp->timeout.function) + seq_printf(s, "%ld ", timer_pending(&exp->timeout) + ? (long)(exp->timeout.expires - jiffies)/HZ : 0); + else + seq_printf(s, "- "); + + seq_printf(s, "proto=%u ", exp->tuple.dst.protonum); + + print_tuple(s, &exp->tuple, + __nf_ct_l3proto_find(exp->tuple.src.l3num), + __nf_ct_l4proto_find(exp->tuple.src.l3num, + exp->tuple.dst.protonum)); + seq_putc(s, '\n'); + + return 0; +} + +static const 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_net(inode, file, &exp_seq_ops, + sizeof(struct ct_expect_iter_state)); +} + +static const struct file_operations ip_exp_file_ops = { + .owner = THIS_MODULE, + .open = exp_open, + .read = seq_read, + .llseek = seq_lseek, + .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_cpu_ids; ++cpu) { + if (!cpu_possible(cpu)) + continue; + *pos = cpu+1; + 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_cpu_ids; ++cpu) { + if (!cpu_possible(cpu)) + continue; + *pos = cpu+1; + return per_cpu_ptr(net->ct.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) +{ + 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 search_restart\n"); + return 0; + } + + seq_printf(seq, "%08x %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, + 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); +} |