projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 58401572 KPO |
1 | /* Accouting handling for netfilter. */ |
| 2 | ||
| 3 | /* | |
| 4 | * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/netfilter.h> | |
| 12 | #include <linux/kernel.h> | |
| 13 | #include <linux/moduleparam.h> | |
| 14 | ||
| 15 | #include <net/netfilter/nf_conntrack.h> | |
| 16 | #include <net/netfilter/nf_conntrack_extend.h> | |
| 17 | #include <net/netfilter/nf_conntrack_acct.h> | |
| 18 | ||
| 19 | #ifdef CONFIG_NF_CT_ACCT | |
| 20 | #define NF_CT_ACCT_DEFAULT 1 | |
| 21 | #else | |
| 22 | #define NF_CT_ACCT_DEFAULT 0 | |
| 23 | #endif | |
| 24 | ||
| 25 | int nf_ct_acct __read_mostly = NF_CT_ACCT_DEFAULT; | |
| 26 | EXPORT_SYMBOL_GPL(nf_ct_acct); | |
| 27 | ||
| 28 | module_param_named(acct, nf_ct_acct, bool, 0644); | |
| 29 | MODULE_PARM_DESC(acct, "Enable connection tracking flow accounting."); | |
| 30 | ||
| 31 | #ifdef CONFIG_SYSCTL | |
| 32 | static struct ctl_table_header *acct_sysctl_header; | |
| 33 | static struct ctl_table acct_sysctl_table[] = { | |
| 34 | { | |
| 35 | .ctl_name = CTL_UNNUMBERED, | |
| 36 | .procname = "nf_conntrack_acct", | |
| 37 | .data = &nf_ct_acct, | |
| 38 | .maxlen = sizeof(unsigned int), | |
| 39 | .mode = 0644, | |
| 40 | .proc_handler = &proc_dointvec, | |
| 41 | }, | |
| 42 | {} | |
| 43 | }; | |
| 44 | #endif /* CONFIG_SYSCTL */ | |
| 45 | ||
| 46 | unsigned int | |
| 47 | seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir) | |
| 48 | { | |
| 49 | struct nf_conn_counter *acct; | |
| 50 | ||
| 51 | acct = nf_conn_acct_find(ct); | |
| 52 | if (!acct) | |
| 53 | return 0; | |
| 54 | ||
| 55 | return seq_printf(s, "packets=%llu bytes=%llu ", | |
| 56 | (unsigned long long)acct[dir].packets, | |
| 57 | (unsigned long long)acct[dir].bytes); | |
| 58 | }; | |
| 59 | EXPORT_SYMBOL_GPL(seq_print_acct); | |
| 60 | ||
| 61 | static struct nf_ct_ext_type acct_extend __read_mostly = { | |
| 62 | .len = sizeof(struct nf_conn_counter[IP_CT_DIR_MAX]), | |
| 63 | .align = __alignof__(struct nf_conn_counter[IP_CT_DIR_MAX]), | |
| 64 | .id = NF_CT_EXT_ACCT, | |
| 65 | }; | |
| 66 | ||
| 67 | int nf_conntrack_acct_init(void) | |
| 68 | { | |
| 69 | int ret; | |
| 70 | ||
| 71 | #ifdef CONFIG_NF_CT_ACCT | |
| 72 | printk(KERN_WARNING "CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Plase use\n"); | |
| 73 | printk(KERN_WARNING "nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or\n"); | |
| 74 | printk(KERN_WARNING "sysctl net.netfilter.nf_conntrack_acct=1 to enable it.\n"); | |
| 75 | #endif | |
| 76 | ||
| 77 | ret = nf_ct_extend_register(&acct_extend); | |
| 78 | if (ret < 0) { | |
| 79 | printk(KERN_ERR "nf_conntrack_acct: Unable to register extension\n"); | |
| 80 | return ret; | |
| 81 | } | |
| 82 | ||
| 83 | #ifdef CONFIG_SYSCTL | |
| 84 | acct_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path, | |
| 85 | acct_sysctl_table); | |
| 86 | ||
| 87 | if (!acct_sysctl_header) { | |
| 88 | nf_ct_extend_unregister(&acct_extend); | |
| 89 | ||
| 90 | printk(KERN_ERR "nf_conntrack_acct: can't register to sysctl.\n"); | |
| 91 | return -ENOMEM; | |
| 92 | } | |
| 93 | #endif | |
| 94 | ||
| 95 | return 0; | |
| 96 | } | |
| 97 | ||
| 98 | void nf_conntrack_acct_fini(void) | |
| 99 | { | |
| 100 | #ifdef CONFIG_SYSCTL | |
| 101 | unregister_sysctl_table(acct_sysctl_header); | |
| 102 | #endif | |
| 103 | nf_ct_extend_unregister(&acct_extend); | |
| 104 | } |