364 lines
8.9 KiB
C
364 lines
8.9 KiB
C
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/*
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* Copyright 2003-2005 Devicescape Software, Inc.
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* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007 Johannes Berg <johannes@sipsolutions.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/kobject.h>
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#include "ieee80211_i.h"
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#include "key.h"
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#include "debugfs.h"
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#include "debugfs_key.h"
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#define KEY_READ(name, prop, buflen, format_string) \
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static ssize_t key_##name##_read(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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char buf[buflen]; \
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struct ieee80211_key *key = file->private_data; \
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int res = scnprintf(buf, buflen, format_string, key->prop); \
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return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
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}
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#define KEY_READ_D(name) KEY_READ(name, name, 20, "%d\n")
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#define KEY_READ_X(name) KEY_READ(name, name, 20, "0x%x\n")
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#define KEY_OPS(name) \
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static const struct file_operations key_ ##name## _ops = { \
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.read = key_##name##_read, \
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.open = mac80211_open_file_generic, \
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}
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#define KEY_FILE(name, format) \
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KEY_READ_##format(name) \
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KEY_OPS(name)
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#define KEY_CONF_READ(name, buflen, format_string) \
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KEY_READ(conf_##name, conf.name, buflen, format_string)
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#define KEY_CONF_READ_D(name) KEY_CONF_READ(name, 20, "%d\n")
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#define KEY_CONF_OPS(name) \
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static const struct file_operations key_ ##name## _ops = { \
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.read = key_conf_##name##_read, \
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.open = mac80211_open_file_generic, \
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}
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#define KEY_CONF_FILE(name, format) \
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KEY_CONF_READ_##format(name) \
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KEY_CONF_OPS(name)
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KEY_CONF_FILE(keylen, D);
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KEY_CONF_FILE(keyidx, D);
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KEY_CONF_FILE(hw_key_idx, D);
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KEY_FILE(flags, X);
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KEY_FILE(tx_rx_count, D);
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KEY_READ(ifindex, sdata->dev->ifindex, 20, "%d\n");
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KEY_OPS(ifindex);
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static ssize_t key_algorithm_read(struct file *file,
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char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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char *alg;
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struct ieee80211_key *key = file->private_data;
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switch (key->conf.alg) {
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case ALG_WEP:
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alg = "WEP\n";
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break;
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case ALG_TKIP:
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alg = "TKIP\n";
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break;
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case ALG_CCMP:
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alg = "CCMP\n";
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break;
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case ALG_AES_CMAC:
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alg = "AES-128-CMAC\n";
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break;
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default:
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return 0;
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}
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return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
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}
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KEY_OPS(algorithm);
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static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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const u8 *tpn;
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char buf[20];
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int len;
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struct ieee80211_key *key = file->private_data;
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switch (key->conf.alg) {
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case ALG_WEP:
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len = scnprintf(buf, sizeof(buf), "\n");
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break;
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case ALG_TKIP:
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len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
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key->u.tkip.tx.iv32,
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key->u.tkip.tx.iv16);
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break;
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case ALG_CCMP:
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tpn = key->u.ccmp.tx_pn;
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len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
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tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
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break;
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case ALG_AES_CMAC:
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tpn = key->u.aes_cmac.tx_pn;
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len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
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tpn[0], tpn[1], tpn[2], tpn[3], tpn[4],
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tpn[5]);
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break;
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default:
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return 0;
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}
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return simple_read_from_buffer(userbuf, count, ppos, buf, len);
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}
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KEY_OPS(tx_spec);
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static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_key *key = file->private_data;
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char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
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int i, len;
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const u8 *rpn;
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switch (key->conf.alg) {
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case ALG_WEP:
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len = scnprintf(buf, sizeof(buf), "\n");
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break;
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case ALG_TKIP:
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for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
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p += scnprintf(p, sizeof(buf)+buf-p,
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"%08x %04x\n",
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key->u.tkip.rx[i].iv32,
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key->u.tkip.rx[i].iv16);
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len = p - buf;
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break;
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case ALG_CCMP:
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for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
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rpn = key->u.ccmp.rx_pn[i];
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p += scnprintf(p, sizeof(buf)+buf-p,
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"%02x%02x%02x%02x%02x%02x\n",
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rpn[0], rpn[1], rpn[2],
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rpn[3], rpn[4], rpn[5]);
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}
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len = p - buf;
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break;
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case ALG_AES_CMAC:
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rpn = key->u.aes_cmac.rx_pn;
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p += scnprintf(p, sizeof(buf)+buf-p,
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"%02x%02x%02x%02x%02x%02x\n",
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rpn[0], rpn[1], rpn[2],
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rpn[3], rpn[4], rpn[5]);
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len = p - buf;
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break;
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default:
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return 0;
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}
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return simple_read_from_buffer(userbuf, count, ppos, buf, len);
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}
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KEY_OPS(rx_spec);
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static ssize_t key_replays_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_key *key = file->private_data;
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char buf[20];
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int len;
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switch (key->conf.alg) {
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case ALG_CCMP:
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len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
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break;
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case ALG_AES_CMAC:
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len = scnprintf(buf, sizeof(buf), "%u\n",
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key->u.aes_cmac.replays);
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break;
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default:
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return 0;
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}
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return simple_read_from_buffer(userbuf, count, ppos, buf, len);
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}
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KEY_OPS(replays);
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static ssize_t key_icverrors_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_key *key = file->private_data;
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char buf[20];
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int len;
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switch (key->conf.alg) {
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case ALG_AES_CMAC:
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len = scnprintf(buf, sizeof(buf), "%u\n",
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key->u.aes_cmac.icverrors);
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break;
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default:
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return 0;
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}
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return simple_read_from_buffer(userbuf, count, ppos, buf, len);
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}
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KEY_OPS(icverrors);
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static ssize_t key_key_read(struct file *file, char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ieee80211_key *key = file->private_data;
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int i, res, bufsize = 2 * key->conf.keylen + 2;
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char *buf = kmalloc(bufsize, GFP_KERNEL);
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char *p = buf;
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for (i = 0; i < key->conf.keylen; i++)
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p += scnprintf(p, bufsize + buf - p, "%02x", key->conf.key[i]);
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p += scnprintf(p, bufsize+buf-p, "\n");
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res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
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kfree(buf);
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return res;
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}
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KEY_OPS(key);
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#define DEBUGFS_ADD(name) \
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key->debugfs.name = debugfs_create_file(#name, 0400,\
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key->debugfs.dir, key, &key_##name##_ops);
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void ieee80211_debugfs_key_add(struct ieee80211_key *key)
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{
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static int keycount;
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char buf[50];
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struct sta_info *sta;
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if (!key->local->debugfs.keys)
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return;
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sprintf(buf, "%d", keycount);
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key->debugfs.cnt = keycount;
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keycount++;
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key->debugfs.dir = debugfs_create_dir(buf,
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key->local->debugfs.keys);
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if (!key->debugfs.dir)
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return;
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rcu_read_lock();
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sta = rcu_dereference(key->sta);
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if (sta)
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sprintf(buf, "../../stations/%pM", sta->sta.addr);
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rcu_read_unlock();
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/* using sta as a boolean is fine outside RCU lock */
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if (sta)
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key->debugfs.stalink =
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debugfs_create_symlink("station", key->debugfs.dir, buf);
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DEBUGFS_ADD(keylen);
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DEBUGFS_ADD(flags);
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DEBUGFS_ADD(keyidx);
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DEBUGFS_ADD(hw_key_idx);
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DEBUGFS_ADD(tx_rx_count);
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DEBUGFS_ADD(algorithm);
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DEBUGFS_ADD(tx_spec);
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DEBUGFS_ADD(rx_spec);
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DEBUGFS_ADD(replays);
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DEBUGFS_ADD(icverrors);
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DEBUGFS_ADD(key);
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DEBUGFS_ADD(ifindex);
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};
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#define DEBUGFS_DEL(name) \
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debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
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void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
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{
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if (!key)
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return;
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DEBUGFS_DEL(keylen);
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DEBUGFS_DEL(flags);
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DEBUGFS_DEL(keyidx);
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DEBUGFS_DEL(hw_key_idx);
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DEBUGFS_DEL(tx_rx_count);
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DEBUGFS_DEL(algorithm);
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DEBUGFS_DEL(tx_spec);
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DEBUGFS_DEL(rx_spec);
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DEBUGFS_DEL(replays);
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DEBUGFS_DEL(icverrors);
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DEBUGFS_DEL(key);
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DEBUGFS_DEL(ifindex);
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debugfs_remove(key->debugfs.stalink);
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key->debugfs.stalink = NULL;
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debugfs_remove(key->debugfs.dir);
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key->debugfs.dir = NULL;
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}
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void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
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{
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char buf[50];
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struct ieee80211_key *key;
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if (!sdata->debugfsdir)
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return;
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/* this is running under the key lock */
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key = sdata->default_key;
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if (key) {
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sprintf(buf, "../keys/%d", key->debugfs.cnt);
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sdata->common_debugfs.default_key =
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debugfs_create_symlink("default_key",
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sdata->debugfsdir, buf);
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} else
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ieee80211_debugfs_key_remove_default(sdata);
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}
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void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
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{
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if (!sdata)
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return;
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debugfs_remove(sdata->common_debugfs.default_key);
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sdata->common_debugfs.default_key = NULL;
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}
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void ieee80211_debugfs_key_add_mgmt_default(struct ieee80211_sub_if_data *sdata)
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{
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char buf[50];
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struct ieee80211_key *key;
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if (!sdata->debugfsdir)
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return;
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/* this is running under the key lock */
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key = sdata->default_mgmt_key;
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if (key) {
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sprintf(buf, "../keys/%d", key->debugfs.cnt);
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sdata->common_debugfs.default_mgmt_key =
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debugfs_create_symlink("default_mgmt_key",
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sdata->debugfsdir, buf);
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} else
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ieee80211_debugfs_key_remove_mgmt_default(sdata);
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}
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void ieee80211_debugfs_key_remove_mgmt_default(struct ieee80211_sub_if_data *sdata)
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{
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if (!sdata)
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return;
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debugfs_remove(sdata->common_debugfs.default_mgmt_key);
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sdata->common_debugfs.default_mgmt_key = NULL;
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}
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void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
|
||
|
|
struct sta_info *sta)
|
||
|
|
{
|
||
|
|
debugfs_remove(key->debugfs.stalink);
|
||
|
|
key->debugfs.stalink = NULL;
|
||
|
|
}
|