585 lines
17 KiB
C
585 lines
17 KiB
C
/*
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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/kernel.h>
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#include <linux/device.h>
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#include <linux/if.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/notifier.h>
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#include <net/mac80211.h>
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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#include "rate.h"
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#include "debugfs.h"
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#include "debugfs_netdev.h"
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static ssize_t ieee80211_if_read(
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struct ieee80211_sub_if_data *sdata,
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char __user *userbuf,
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size_t count, loff_t *ppos,
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ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
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{
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char buf[70];
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ssize_t ret = -EINVAL;
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read_lock(&dev_base_lock);
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if (sdata->dev->reg_state == NETREG_REGISTERED)
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ret = (*format)(sdata, buf, sizeof(buf));
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read_unlock(&dev_base_lock);
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if (ret != -EINVAL)
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ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
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return ret;
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}
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#ifdef CONFIG_MAC80211_MESH
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static ssize_t ieee80211_if_write(
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struct ieee80211_sub_if_data *sdata,
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char const __user *userbuf,
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size_t count, loff_t *ppos,
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int (*format)(struct ieee80211_sub_if_data *, char *))
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{
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char buf[10];
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int buf_size;
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memset(buf, 0x00, sizeof(buf));
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buf_size = min(count, (sizeof(buf)-1));
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if (copy_from_user(buf, userbuf, buf_size))
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return count;
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read_lock(&dev_base_lock);
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if (sdata->dev->reg_state == NETREG_REGISTERED)
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(*format)(sdata, buf);
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read_unlock(&dev_base_lock);
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return count;
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}
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#endif
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#define IEEE80211_IF_FMT(name, field, format_string) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, char *buf, \
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int buflen) \
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{ \
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return scnprintf(buf, buflen, format_string, sdata->field); \
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}
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#define IEEE80211_IF_WFMT(name, field, type) \
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static int ieee80211_if_wfmt_##name( \
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struct ieee80211_sub_if_data *sdata, char *buf) \
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{ \
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unsigned long tmp; \
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char *endp; \
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\
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tmp = simple_strtoul(buf, &endp, 0); \
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if ((endp == buf) || ((type)tmp != tmp)) \
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return -EINVAL; \
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sdata->field = tmp; \
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return 0; \
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}
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#define IEEE80211_IF_FMT_DEC(name, field) \
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IEEE80211_IF_FMT(name, field, "%d\n")
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#define IEEE80211_IF_FMT_HEX(name, field) \
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IEEE80211_IF_FMT(name, field, "%#x\n")
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#define IEEE80211_IF_FMT_SIZE(name, field) \
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IEEE80211_IF_FMT(name, field, "%zd\n")
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#define IEEE80211_IF_FMT_ATOMIC(name, field) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, \
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char *buf, int buflen) \
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{ \
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return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
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}
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#define IEEE80211_IF_FMT_MAC(name, field) \
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static ssize_t ieee80211_if_fmt_##name( \
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const struct ieee80211_sub_if_data *sdata, char *buf, \
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int buflen) \
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{ \
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DECLARE_MAC_BUF(mac); \
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return scnprintf(buf, buflen, "%s\n", print_mac(mac, sdata->field));\
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}
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#define __IEEE80211_IF_FILE(name) \
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static ssize_t ieee80211_if_read_##name(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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return ieee80211_if_read(file->private_data, \
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userbuf, count, ppos, \
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ieee80211_if_fmt_##name); \
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} \
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static const struct file_operations name##_ops = { \
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.read = ieee80211_if_read_##name, \
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.open = mac80211_open_file_generic, \
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}
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#define IEEE80211_IF_FILE(name, field, format) \
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IEEE80211_IF_FMT_##format(name, field) \
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__IEEE80211_IF_FILE(name)
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#define __IEEE80211_IF_WFILE(name) \
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static ssize_t ieee80211_if_read_##name(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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return ieee80211_if_read(file->private_data, \
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userbuf, count, ppos, \
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ieee80211_if_fmt_##name); \
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} \
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static ssize_t ieee80211_if_write_##name(struct file *file, \
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const char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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return ieee80211_if_write(file->private_data, \
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userbuf, count, ppos, \
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ieee80211_if_wfmt_##name); \
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} \
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static const struct file_operations name##_ops = { \
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.read = ieee80211_if_read_##name, \
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.write = ieee80211_if_write_##name, \
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.open = mac80211_open_file_generic, \
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}
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#define IEEE80211_IF_WFILE(name, field, format, type) \
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IEEE80211_IF_FMT_##format(name, field) \
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IEEE80211_IF_WFMT(name, field, type) \
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__IEEE80211_IF_WFILE(name)
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/* common attributes */
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IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
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IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
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IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
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/* STA/IBSS attributes */
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IEEE80211_IF_FILE(state, u.sta.state, DEC);
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IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
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IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
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IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
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IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
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IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
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IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
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IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
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IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
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IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
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IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
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IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
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IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
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IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC);
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static ssize_t ieee80211_if_fmt_flags(
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const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
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{
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return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
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sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
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sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
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sdata->bss_conf.use_cts_prot ? "CTS prot\n" : "");
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}
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__IEEE80211_IF_FILE(flags);
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/* AP attributes */
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IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
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IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
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IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
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static ssize_t ieee80211_if_fmt_num_buffered_multicast(
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const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
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{
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return scnprintf(buf, buflen, "%u\n",
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skb_queue_len(&sdata->u.ap.ps_bc_buf));
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}
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__IEEE80211_IF_FILE(num_buffered_multicast);
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/* WDS attributes */
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IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
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#ifdef CONFIG_MAC80211_MESH
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/* Mesh stats attributes */
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IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
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IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
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IEEE80211_IF_FILE(dropped_frames_no_route,
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u.mesh.mshstats.dropped_frames_no_route, DEC);
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IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
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/* Mesh parameters */
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IEEE80211_IF_WFILE(dot11MeshMaxRetries,
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u.mesh.mshcfg.dot11MeshMaxRetries, DEC, u8);
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IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
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u.mesh.mshcfg.dot11MeshRetryTimeout, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
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u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
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u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC, u8);
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IEEE80211_IF_WFILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC, u8);
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IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
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u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
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u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
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IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
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u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
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u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
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IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
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u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
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IEEE80211_IF_WFILE(path_refresh_time,
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u.mesh.mshcfg.path_refresh_time, DEC, u32);
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IEEE80211_IF_WFILE(min_discovery_timeout,
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u.mesh.mshcfg.min_discovery_timeout, DEC, u16);
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#endif
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#define DEBUGFS_ADD(name, type)\
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sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
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sdata->debugfsdir, sdata, &name##_ops);
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static void add_sta_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(drop_unencrypted, sta);
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DEBUGFS_ADD(force_unicast_rateidx, sta);
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DEBUGFS_ADD(max_ratectrl_rateidx, sta);
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DEBUGFS_ADD(state, sta);
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DEBUGFS_ADD(bssid, sta);
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DEBUGFS_ADD(prev_bssid, sta);
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DEBUGFS_ADD(ssid_len, sta);
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DEBUGFS_ADD(aid, sta);
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DEBUGFS_ADD(ap_capab, sta);
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DEBUGFS_ADD(capab, sta);
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DEBUGFS_ADD(extra_ie_len, sta);
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DEBUGFS_ADD(auth_tries, sta);
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DEBUGFS_ADD(assoc_tries, sta);
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DEBUGFS_ADD(auth_algs, sta);
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DEBUGFS_ADD(auth_alg, sta);
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DEBUGFS_ADD(auth_transaction, sta);
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DEBUGFS_ADD(flags, sta);
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DEBUGFS_ADD(num_beacons_sta, sta);
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}
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static void add_ap_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(drop_unencrypted, ap);
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DEBUGFS_ADD(force_unicast_rateidx, ap);
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DEBUGFS_ADD(max_ratectrl_rateidx, ap);
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DEBUGFS_ADD(num_sta_ps, ap);
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DEBUGFS_ADD(dtim_count, ap);
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DEBUGFS_ADD(num_beacons, ap);
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DEBUGFS_ADD(num_buffered_multicast, ap);
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}
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static void add_wds_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(drop_unencrypted, wds);
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DEBUGFS_ADD(force_unicast_rateidx, wds);
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DEBUGFS_ADD(max_ratectrl_rateidx, wds);
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DEBUGFS_ADD(peer, wds);
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}
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static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_ADD(drop_unencrypted, vlan);
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DEBUGFS_ADD(force_unicast_rateidx, vlan);
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DEBUGFS_ADD(max_ratectrl_rateidx, vlan);
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}
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static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
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{
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}
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#ifdef CONFIG_MAC80211_MESH
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#define MESHSTATS_ADD(name)\
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sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
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sdata->mesh_stats_dir, sdata, &name##_ops);
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static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
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{
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sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
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sdata->debugfsdir);
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MESHSTATS_ADD(fwded_frames);
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MESHSTATS_ADD(dropped_frames_ttl);
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MESHSTATS_ADD(dropped_frames_no_route);
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MESHSTATS_ADD(estab_plinks);
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}
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#define MESHPARAMS_ADD(name)\
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sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
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sdata->mesh_config_dir, sdata, &name##_ops);
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static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
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{
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sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
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sdata->debugfsdir);
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MESHPARAMS_ADD(dot11MeshMaxRetries);
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MESHPARAMS_ADD(dot11MeshRetryTimeout);
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MESHPARAMS_ADD(dot11MeshConfirmTimeout);
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MESHPARAMS_ADD(dot11MeshHoldingTimeout);
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MESHPARAMS_ADD(dot11MeshTTL);
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MESHPARAMS_ADD(auto_open_plinks);
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MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
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MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
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MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
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MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
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MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
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MESHPARAMS_ADD(path_refresh_time);
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MESHPARAMS_ADD(min_discovery_timeout);
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}
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#endif
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static void add_files(struct ieee80211_sub_if_data *sdata)
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{
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if (!sdata->debugfsdir)
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return;
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switch (sdata->vif.type) {
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case IEEE80211_IF_TYPE_MESH_POINT:
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#ifdef CONFIG_MAC80211_MESH
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add_mesh_stats(sdata);
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add_mesh_config(sdata);
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#endif
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break;
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case IEEE80211_IF_TYPE_STA:
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case IEEE80211_IF_TYPE_IBSS:
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add_sta_files(sdata);
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break;
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case IEEE80211_IF_TYPE_AP:
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add_ap_files(sdata);
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break;
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case IEEE80211_IF_TYPE_WDS:
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add_wds_files(sdata);
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break;
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case IEEE80211_IF_TYPE_MNTR:
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add_monitor_files(sdata);
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break;
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case IEEE80211_IF_TYPE_VLAN:
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add_vlan_files(sdata);
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break;
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default:
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break;
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}
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}
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#define DEBUGFS_DEL(name, type) \
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do { \
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debugfs_remove(sdata->debugfs.type.name); \
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sdata->debugfs.type.name = NULL; \
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} while (0)
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static void del_sta_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(drop_unencrypted, sta);
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DEBUGFS_DEL(force_unicast_rateidx, sta);
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DEBUGFS_DEL(max_ratectrl_rateidx, sta);
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DEBUGFS_DEL(state, sta);
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DEBUGFS_DEL(bssid, sta);
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DEBUGFS_DEL(prev_bssid, sta);
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DEBUGFS_DEL(ssid_len, sta);
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DEBUGFS_DEL(aid, sta);
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DEBUGFS_DEL(ap_capab, sta);
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DEBUGFS_DEL(capab, sta);
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DEBUGFS_DEL(extra_ie_len, sta);
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DEBUGFS_DEL(auth_tries, sta);
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DEBUGFS_DEL(assoc_tries, sta);
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DEBUGFS_DEL(auth_algs, sta);
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DEBUGFS_DEL(auth_alg, sta);
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DEBUGFS_DEL(auth_transaction, sta);
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DEBUGFS_DEL(flags, sta);
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DEBUGFS_DEL(num_beacons_sta, sta);
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}
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static void del_ap_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(drop_unencrypted, ap);
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DEBUGFS_DEL(force_unicast_rateidx, ap);
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DEBUGFS_DEL(max_ratectrl_rateidx, ap);
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DEBUGFS_DEL(num_sta_ps, ap);
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DEBUGFS_DEL(dtim_count, ap);
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DEBUGFS_DEL(num_beacons, ap);
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DEBUGFS_DEL(num_buffered_multicast, ap);
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}
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static void del_wds_files(struct ieee80211_sub_if_data *sdata)
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{
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DEBUGFS_DEL(drop_unencrypted, wds);
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DEBUGFS_DEL(force_unicast_rateidx, wds);
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DEBUGFS_DEL(max_ratectrl_rateidx, wds);
|
|
|
|
DEBUGFS_DEL(peer, wds);
|
|
}
|
|
|
|
static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
DEBUGFS_DEL(drop_unencrypted, vlan);
|
|
DEBUGFS_DEL(force_unicast_rateidx, vlan);
|
|
DEBUGFS_DEL(max_ratectrl_rateidx, vlan);
|
|
}
|
|
|
|
static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
}
|
|
|
|
#ifdef CONFIG_MAC80211_MESH
|
|
#define MESHSTATS_DEL(name) \
|
|
do { \
|
|
debugfs_remove(sdata->mesh_stats.name); \
|
|
sdata->mesh_stats.name = NULL; \
|
|
} while (0)
|
|
|
|
static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
MESHSTATS_DEL(fwded_frames);
|
|
MESHSTATS_DEL(dropped_frames_ttl);
|
|
MESHSTATS_DEL(dropped_frames_no_route);
|
|
MESHSTATS_DEL(estab_plinks);
|
|
debugfs_remove(sdata->mesh_stats_dir);
|
|
sdata->mesh_stats_dir = NULL;
|
|
}
|
|
|
|
#define MESHPARAMS_DEL(name) \
|
|
do { \
|
|
debugfs_remove(sdata->mesh_config.name); \
|
|
sdata->mesh_config.name = NULL; \
|
|
} while (0)
|
|
|
|
static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
MESHPARAMS_DEL(dot11MeshMaxRetries);
|
|
MESHPARAMS_DEL(dot11MeshRetryTimeout);
|
|
MESHPARAMS_DEL(dot11MeshConfirmTimeout);
|
|
MESHPARAMS_DEL(dot11MeshHoldingTimeout);
|
|
MESHPARAMS_DEL(dot11MeshTTL);
|
|
MESHPARAMS_DEL(auto_open_plinks);
|
|
MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
|
|
MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
|
|
MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
|
|
MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
|
|
MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
|
|
MESHPARAMS_DEL(path_refresh_time);
|
|
MESHPARAMS_DEL(min_discovery_timeout);
|
|
debugfs_remove(sdata->mesh_config_dir);
|
|
sdata->mesh_config_dir = NULL;
|
|
}
|
|
#endif
|
|
|
|
static void del_files(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
if (!sdata->debugfsdir)
|
|
return;
|
|
|
|
switch (sdata->vif.type) {
|
|
case IEEE80211_IF_TYPE_MESH_POINT:
|
|
#ifdef CONFIG_MAC80211_MESH
|
|
del_mesh_stats(sdata);
|
|
del_mesh_config(sdata);
|
|
#endif
|
|
break;
|
|
case IEEE80211_IF_TYPE_STA:
|
|
case IEEE80211_IF_TYPE_IBSS:
|
|
del_sta_files(sdata);
|
|
break;
|
|
case IEEE80211_IF_TYPE_AP:
|
|
del_ap_files(sdata);
|
|
break;
|
|
case IEEE80211_IF_TYPE_WDS:
|
|
del_wds_files(sdata);
|
|
break;
|
|
case IEEE80211_IF_TYPE_MNTR:
|
|
del_monitor_files(sdata);
|
|
break;
|
|
case IEEE80211_IF_TYPE_VLAN:
|
|
del_vlan_files(sdata);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int notif_registered;
|
|
|
|
void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
char buf[10+IFNAMSIZ];
|
|
|
|
if (!notif_registered)
|
|
return;
|
|
|
|
sprintf(buf, "netdev:%s", sdata->dev->name);
|
|
sdata->debugfsdir = debugfs_create_dir(buf,
|
|
sdata->local->hw.wiphy->debugfsdir);
|
|
add_files(sdata);
|
|
}
|
|
|
|
void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
del_files(sdata);
|
|
debugfs_remove(sdata->debugfsdir);
|
|
sdata->debugfsdir = NULL;
|
|
}
|
|
|
|
static int netdev_notify(struct notifier_block *nb,
|
|
unsigned long state,
|
|
void *ndev)
|
|
{
|
|
struct net_device *dev = ndev;
|
|
struct dentry *dir;
|
|
struct ieee80211_sub_if_data *sdata;
|
|
char buf[10+IFNAMSIZ];
|
|
|
|
if (state != NETDEV_CHANGENAME)
|
|
return 0;
|
|
|
|
if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
|
|
return 0;
|
|
|
|
if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
|
|
return 0;
|
|
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
|
|
|
sprintf(buf, "netdev:%s", dev->name);
|
|
dir = sdata->debugfsdir;
|
|
if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
|
|
printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
|
|
"dir to %s\n", buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct notifier_block mac80211_debugfs_netdev_notifier = {
|
|
.notifier_call = netdev_notify,
|
|
};
|
|
|
|
void ieee80211_debugfs_netdev_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"mac80211: failed to install netdev notifier,"
|
|
" disabling per-netdev debugfs!\n");
|
|
} else
|
|
notif_registered = 1;
|
|
}
|
|
|
|
void ieee80211_debugfs_netdev_exit(void)
|
|
{
|
|
unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
|
|
notif_registered = 0;
|
|
}
|