439 lines
12 KiB
C
439 lines
12 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/slab.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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static ssize_t ieee80211_if_write(
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struct ieee80211_sub_if_data *sdata,
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const char __user *userbuf,
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size_t count, loff_t *ppos,
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ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
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{
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u8 *buf;
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ssize_t ret;
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buf = kmalloc(count, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = -EFAULT;
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if (copy_from_user(buf, userbuf, count))
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goto freebuf;
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ret = -ENODEV;
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rtnl_lock();
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if (sdata->dev->reg_state == NETREG_REGISTERED)
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ret = (*write)(sdata, buf, count);
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rtnl_unlock();
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freebuf:
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kfree(buf);
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return ret;
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}
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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_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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return scnprintf(buf, buflen, "%pM\n", sdata->field); \
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}
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#define IEEE80211_IF_FMT_DEC_DIV_16(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", sdata->field / 16); \
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}
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#define __IEEE80211_IF_FILE(name, _write) \
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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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.write = (_write), \
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.open = mac80211_open_file_generic, \
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}
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#define __IEEE80211_IF_FILE_W(name) \
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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, userbuf, count, \
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ppos, ieee80211_if_parse_##name); \
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} \
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__IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
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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, NULL)
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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(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
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HEX);
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IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
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HEX);
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/* STA attributes */
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IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
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IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
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IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
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IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
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static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
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enum ieee80211_smps_mode smps_mode)
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{
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struct ieee80211_local *local = sdata->local;
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int err;
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if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
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smps_mode == IEEE80211_SMPS_STATIC)
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return -EINVAL;
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/* auto should be dynamic if in PS mode */
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if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
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(smps_mode == IEEE80211_SMPS_DYNAMIC ||
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smps_mode == IEEE80211_SMPS_AUTOMATIC))
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return -EINVAL;
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/* supported only on managed interfaces for now */
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if (sdata->vif.type != NL80211_IFTYPE_STATION)
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return -EOPNOTSUPP;
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mutex_lock(&local->iflist_mtx);
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err = __ieee80211_request_smps(sdata, smps_mode);
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mutex_unlock(&local->iflist_mtx);
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return err;
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}
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static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
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[IEEE80211_SMPS_AUTOMATIC] = "auto",
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[IEEE80211_SMPS_OFF] = "off",
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[IEEE80211_SMPS_STATIC] = "static",
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[IEEE80211_SMPS_DYNAMIC] = "dynamic",
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};
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static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
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char *buf, int buflen)
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{
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if (sdata->vif.type != NL80211_IFTYPE_STATION)
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return -EOPNOTSUPP;
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return snprintf(buf, buflen, "request: %s\nused: %s\n",
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smps_modes[sdata->u.mgd.req_smps],
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smps_modes[sdata->u.mgd.ap_smps]);
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}
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static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
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const char *buf, int buflen)
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{
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enum ieee80211_smps_mode mode;
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for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
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if (strncmp(buf, smps_modes[mode], buflen) == 0) {
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int err = ieee80211_set_smps(sdata, mode);
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if (!err)
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return buflen;
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return err;
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}
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}
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return -EINVAL;
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}
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__IEEE80211_IF_FILE_W(smps);
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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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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, NULL);
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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_mcast, u.mesh.mshstats.fwded_mcast, DEC);
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IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
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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_FILE(dot11MeshMaxRetries,
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u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
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IEEE80211_IF_FILE(dot11MeshRetryTimeout,
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u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
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IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
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u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
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IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
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u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
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IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
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IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
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IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
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u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
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IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
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u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
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IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
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u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
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IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
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u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
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IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
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u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
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IEEE80211_IF_FILE(path_refresh_time,
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u.mesh.mshcfg.path_refresh_time, DEC);
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IEEE80211_IF_FILE(min_discovery_timeout,
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u.mesh.mshcfg.min_discovery_timeout, DEC);
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IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
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u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
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#endif
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#define DEBUGFS_ADD(name) \
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debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
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sdata, &name##_ops);
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#define DEBUGFS_ADD_MODE(name, mode) \
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debugfs_create_file(#name, mode, sdata->debugfs.dir, \
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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);
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DEBUGFS_ADD(rc_rateidx_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_mask_5ghz);
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DEBUGFS_ADD(bssid);
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DEBUGFS_ADD(aid);
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DEBUGFS_ADD(last_beacon);
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DEBUGFS_ADD(ave_beacon);
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DEBUGFS_ADD_MODE(smps, 0600);
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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);
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DEBUGFS_ADD(rc_rateidx_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_mask_5ghz);
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DEBUGFS_ADD(num_sta_ps);
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DEBUGFS_ADD(dtim_count);
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DEBUGFS_ADD(num_buffered_multicast);
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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);
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DEBUGFS_ADD(rc_rateidx_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_mask_5ghz);
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DEBUGFS_ADD(peer);
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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);
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DEBUGFS_ADD(rc_rateidx_mask_2ghz);
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DEBUGFS_ADD(rc_rateidx_mask_5ghz);
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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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static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
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{
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struct dentry *dir = debugfs_create_dir("mesh_stats",
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sdata->debugfs.dir);
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#define MESHSTATS_ADD(name)\
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debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
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MESHSTATS_ADD(fwded_mcast);
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MESHSTATS_ADD(fwded_unicast);
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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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#undef MESHSTATS_ADD
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}
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static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
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{
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struct dentry *dir = debugfs_create_dir("mesh_config",
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sdata->debugfs.dir);
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#define MESHPARAMS_ADD(name) \
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debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
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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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#undef MESHPARAMS_ADD
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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->debugfs.dir)
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return;
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_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 NL80211_IFTYPE_STATION:
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add_sta_files(sdata);
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break;
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case NL80211_IFTYPE_ADHOC:
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/* XXX */
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break;
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case NL80211_IFTYPE_AP:
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add_ap_files(sdata);
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break;
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case NL80211_IFTYPE_WDS:
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add_wds_files(sdata);
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break;
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case NL80211_IFTYPE_MONITOR:
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add_monitor_files(sdata);
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break;
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case NL80211_IFTYPE_AP_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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void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
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{
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char buf[10+IFNAMSIZ];
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sprintf(buf, "netdev:%s", sdata->name);
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sdata->debugfs.dir = debugfs_create_dir(buf,
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sdata->local->hw.wiphy->debugfsdir);
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add_files(sdata);
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}
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void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
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{
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if (!sdata->debugfs.dir)
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return;
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debugfs_remove_recursive(sdata->debugfs.dir);
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sdata->debugfs.dir = NULL;
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}
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void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
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{
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struct dentry *dir;
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char buf[10 + IFNAMSIZ];
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dir = sdata->debugfs.dir;
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if (!dir)
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return;
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sprintf(buf, "netdev:%s", sdata->name);
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if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
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printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
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"dir to %s\n", buf);
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}
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