281 lines
7.0 KiB
C
281 lines
7.0 KiB
C
/*
|
|
* Copyright 2003-2005 Devicescape Software, Inc.
|
|
* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
|
|
* Copyright 2007 Johannes Berg <johannes@sipsolutions.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/kobject.h>
|
|
#include "ieee80211_i.h"
|
|
#include "key.h"
|
|
#include "debugfs.h"
|
|
#include "debugfs_key.h"
|
|
|
|
#define KEY_READ(name, prop, buflen, format_string) \
|
|
static ssize_t key_##name##_read(struct file *file, \
|
|
char __user *userbuf, \
|
|
size_t count, loff_t *ppos) \
|
|
{ \
|
|
char buf[buflen]; \
|
|
struct ieee80211_key *key = file->private_data; \
|
|
int res = scnprintf(buf, buflen, format_string, key->prop); \
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
|
|
}
|
|
#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
|
|
#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
|
|
|
|
#define KEY_OPS(name) \
|
|
static const struct file_operations key_ ##name## _ops = { \
|
|
.read = key_##name##_read, \
|
|
.open = mac80211_open_file_generic, \
|
|
}
|
|
|
|
#define KEY_FILE(name, format) \
|
|
KEY_READ_##format(name) \
|
|
KEY_OPS(name)
|
|
|
|
#define KEY_CONF_READ(name, buflen, format_string) \
|
|
KEY_READ(conf_##name, conf.name, buflen, format_string)
|
|
#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
|
|
|
|
#define KEY_CONF_OPS(name) \
|
|
static const struct file_operations key_ ##name## _ops = { \
|
|
.read = key_conf_##name##_read, \
|
|
.open = mac80211_open_file_generic, \
|
|
}
|
|
|
|
#define KEY_CONF_FILE(name, format) \
|
|
KEY_CONF_READ_##format(name) \
|
|
KEY_CONF_OPS(name)
|
|
|
|
KEY_CONF_FILE(keylen, D);
|
|
KEY_CONF_FILE(keyidx, D);
|
|
KEY_CONF_FILE(hw_key_idx, D);
|
|
KEY_FILE(flags, X);
|
|
KEY_FILE(tx_rx_count, D);
|
|
KEY_READ(ifindex, sdata->dev->ifindex, 20, "%d\n");
|
|
KEY_OPS(ifindex);
|
|
|
|
static ssize_t key_algorithm_read(struct file *file,
|
|
char __user *userbuf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char *alg;
|
|
struct ieee80211_key *key = file->private_data;
|
|
|
|
switch (key->conf.alg) {
|
|
case ALG_WEP:
|
|
alg = "WEP\n";
|
|
break;
|
|
case ALG_TKIP:
|
|
alg = "TKIP\n";
|
|
break;
|
|
case ALG_CCMP:
|
|
alg = "CCMP\n";
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
|
|
}
|
|
KEY_OPS(algorithm);
|
|
|
|
static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
const u8 *tpn;
|
|
char buf[20];
|
|
int len;
|
|
struct ieee80211_key *key = file->private_data;
|
|
|
|
switch (key->conf.alg) {
|
|
case ALG_WEP:
|
|
len = scnprintf(buf, sizeof(buf), "\n");
|
|
break;
|
|
case ALG_TKIP:
|
|
len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
|
|
key->u.tkip.iv32,
|
|
key->u.tkip.iv16);
|
|
break;
|
|
case ALG_CCMP:
|
|
tpn = key->u.ccmp.tx_pn;
|
|
len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
|
|
tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, len);
|
|
}
|
|
KEY_OPS(tx_spec);
|
|
|
|
static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_key *key = file->private_data;
|
|
char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
|
|
int i, len;
|
|
const u8 *rpn;
|
|
|
|
switch (key->conf.alg) {
|
|
case ALG_WEP:
|
|
len = scnprintf(buf, sizeof(buf), "\n");
|
|
break;
|
|
case ALG_TKIP:
|
|
for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
|
|
p += scnprintf(p, sizeof(buf)+buf-p,
|
|
"%08x %04x\n",
|
|
key->u.tkip.iv32_rx[i],
|
|
key->u.tkip.iv16_rx[i]);
|
|
len = p - buf;
|
|
break;
|
|
case ALG_CCMP:
|
|
for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
|
|
rpn = key->u.ccmp.rx_pn[i];
|
|
p += scnprintf(p, sizeof(buf)+buf-p,
|
|
"%02x%02x%02x%02x%02x%02x\n",
|
|
rpn[0], rpn[1], rpn[2],
|
|
rpn[3], rpn[4], rpn[5]);
|
|
}
|
|
len = p - buf;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, len);
|
|
}
|
|
KEY_OPS(rx_spec);
|
|
|
|
static ssize_t key_replays_read(struct file *file, char __user *userbuf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_key *key = file->private_data;
|
|
char buf[20];
|
|
int len;
|
|
|
|
if (key->conf.alg != ALG_CCMP)
|
|
return 0;
|
|
len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
|
|
return simple_read_from_buffer(userbuf, count, ppos, buf, len);
|
|
}
|
|
KEY_OPS(replays);
|
|
|
|
static ssize_t key_key_read(struct file *file, char __user *userbuf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct ieee80211_key *key = file->private_data;
|
|
int i, res, bufsize = 2 * key->conf.keylen + 2;
|
|
char *buf = kmalloc(bufsize, GFP_KERNEL);
|
|
char *p = buf;
|
|
|
|
for (i = 0; i < key->conf.keylen; i++)
|
|
p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
|
|
p += scnprintf(p, bufsize+buf-p, "\n");
|
|
res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
|
|
kfree(buf);
|
|
return res;
|
|
}
|
|
KEY_OPS(key);
|
|
|
|
#define DEBUGFS_ADD(name) \
|
|
key->debugfs.name = debugfs_create_file(#name, 0400,\
|
|
key->debugfs.dir, key, &key_##name##_ops);
|
|
|
|
void ieee80211_debugfs_key_add(struct ieee80211_key *key)
|
|
{
|
|
static int keycount;
|
|
char buf[50];
|
|
DECLARE_MAC_BUF(mac);
|
|
struct sta_info *sta;
|
|
|
|
if (!key->local->debugfs.keys)
|
|
return;
|
|
|
|
sprintf(buf, "%d", keycount);
|
|
key->debugfs.cnt = keycount;
|
|
keycount++;
|
|
key->debugfs.dir = debugfs_create_dir(buf,
|
|
key->local->debugfs.keys);
|
|
|
|
if (!key->debugfs.dir)
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
sta = rcu_dereference(key->sta);
|
|
if (sta)
|
|
sprintf(buf, "../../stations/%s", print_mac(mac, sta->addr));
|
|
rcu_read_unlock();
|
|
|
|
/* using sta as a boolean is fine outside RCU lock */
|
|
if (sta)
|
|
key->debugfs.stalink =
|
|
debugfs_create_symlink("station", key->debugfs.dir, buf);
|
|
|
|
DEBUGFS_ADD(keylen);
|
|
DEBUGFS_ADD(flags);
|
|
DEBUGFS_ADD(keyidx);
|
|
DEBUGFS_ADD(hw_key_idx);
|
|
DEBUGFS_ADD(tx_rx_count);
|
|
DEBUGFS_ADD(algorithm);
|
|
DEBUGFS_ADD(tx_spec);
|
|
DEBUGFS_ADD(rx_spec);
|
|
DEBUGFS_ADD(replays);
|
|
DEBUGFS_ADD(key);
|
|
DEBUGFS_ADD(ifindex);
|
|
};
|
|
|
|
#define DEBUGFS_DEL(name) \
|
|
debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
|
|
|
|
void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
|
|
{
|
|
if (!key)
|
|
return;
|
|
|
|
DEBUGFS_DEL(keylen);
|
|
DEBUGFS_DEL(flags);
|
|
DEBUGFS_DEL(keyidx);
|
|
DEBUGFS_DEL(hw_key_idx);
|
|
DEBUGFS_DEL(tx_rx_count);
|
|
DEBUGFS_DEL(algorithm);
|
|
DEBUGFS_DEL(tx_spec);
|
|
DEBUGFS_DEL(rx_spec);
|
|
DEBUGFS_DEL(replays);
|
|
DEBUGFS_DEL(key);
|
|
DEBUGFS_DEL(ifindex);
|
|
|
|
debugfs_remove(key->debugfs.stalink);
|
|
key->debugfs.stalink = NULL;
|
|
debugfs_remove(key->debugfs.dir);
|
|
key->debugfs.dir = NULL;
|
|
}
|
|
void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
char buf[50];
|
|
|
|
if (!sdata->debugfsdir)
|
|
return;
|
|
|
|
sprintf(buf, "../keys/%d", sdata->default_key->debugfs.cnt);
|
|
sdata->debugfs.default_key =
|
|
debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
|
|
}
|
|
void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
if (!sdata)
|
|
return;
|
|
|
|
debugfs_remove(sdata->debugfs.default_key);
|
|
sdata->debugfs.default_key = NULL;
|
|
}
|
|
|
|
void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
|
|
struct sta_info *sta)
|
|
{
|
|
debugfs_remove(key->debugfs.stalink);
|
|
key->debugfs.stalink = NULL;
|
|
}
|