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authorJiri Benc <jbenc@suse.cz>2007-05-05 22:46:38 +0400
committerDavid S. Miller <davem@davemloft.net>2007-05-05 22:46:38 +0400
commite9f207f0ff90bf60b825800d7450e6f2ff2eab88 (patch)
tree22bd39116f2cae8d4ce6169eb91e4b9a7204770f /net/mac80211/debugfs_key.c
parentf0706e828e96d0fa4e80c0d25aa98523f6d589a0 (diff)
downloadlinux-e9f207f0ff90bf60b825800d7450e6f2ff2eab88.tar.xz
[MAC80211]: Add debugfs attributes.
Export various mac80211 internal variables through debugfs. Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/debugfs_key.c')
-rw-r--r--net/mac80211/debugfs_key.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c
new file mode 100644
index 000000000000..7d56dc9e7326
--- /dev/null
+++ b/net/mac80211/debugfs_key.c
@@ -0,0 +1,252 @@
+/*
+ * 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 "ieee80211_key.h"
+#include "debugfs.h"
+#include "debugfs_key.h"
+
+#define KEY_READ(name, 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->name); \
+ return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}
+#define KEY_READ_D(name) KEY_READ(name, 20, "%d\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)
+
+KEY_FILE(keylen, D);
+KEY_FILE(force_sw_encrypt, D);
+KEY_FILE(keyidx, D);
+KEY_FILE(hw_key_idx, D);
+KEY_FILE(tx_rx_count, D);
+
+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->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->alg) {
+ case ALG_WEP:
+ len = scnprintf(buf, sizeof(buf), "\n");
+ case ALG_TKIP:
+ len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
+ key->u.tkip.iv32,
+ key->u.tkip.iv16);
+ 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]);
+ 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->alg) {
+ case ALG_WEP:
+ len = scnprintf(buf, sizeof(buf), "\n");
+ 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;
+ 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;
+ 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->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->keylen+2;
+ char *buf = kmalloc(bufsize, GFP_KERNEL);
+ char *p = buf;
+
+ for (i = 0; i < key->keylen; i++)
+ p += scnprintf(p, bufsize+buf-p, "%02x", key->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_local *local,
+ struct ieee80211_key *key)
+{
+ char buf[20];
+
+ if (!local->debugfs.keys)
+ return;
+
+ sprintf(buf, "%d", key->keyidx);
+ key->debugfs.dir = debugfs_create_dir(buf,
+ local->debugfs.keys);
+
+ if (!key->debugfs.dir)
+ return;
+
+ DEBUGFS_ADD(keylen);
+ DEBUGFS_ADD(force_sw_encrypt);
+ 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);
+};
+
+#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(force_sw_encrypt);
+ 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_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->keyidx);
+ 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_link(struct ieee80211_key *key,
+ struct sta_info *sta)
+{
+ char buf[50];
+
+ if (!key->debugfs.dir)
+ return;
+
+ sprintf(buf, "../sta/" MAC_FMT, MAC_ARG(sta->addr));
+ key->debugfs.stalink =
+ debugfs_create_symlink("station", key->debugfs.dir, buf);
+}
+
+void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
+ struct sta_info *sta)
+{
+ debugfs_remove(key->debugfs.stalink);
+ key->debugfs.stalink = NULL;
+}