aboutsummaryrefslogtreecommitdiffstats
path: root/package/mac80211/src/net/wireless/reg.c
diff options
context:
space:
mode:
Diffstat (limited to 'package/mac80211/src/net/wireless/reg.c')
-rw-r--r--package/mac80211/src/net/wireless/reg.c153
1 files changed, 0 insertions, 153 deletions
diff --git a/package/mac80211/src/net/wireless/reg.c b/package/mac80211/src/net/wireless/reg.c
deleted file mode 100644
index 2b63c96dcf..0000000000
--- a/package/mac80211/src/net/wireless/reg.c
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- * 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.
- */
-
-/*
- * This regulatory domain control implementation is highly incomplete, it
- * only exists for the purpose of not regressing mac80211.
- *
- * For now, drivers can restrict the set of allowed channels by either
- * not registering those channels or setting the IEEE80211_CHAN_DISABLED
- * flag; that flag will only be *set* by this code, never *cleared.
- *
- * The usual implementation is for a driver to read a device EEPROM to
- * determine which regulatory domain it should be operating under, then
- * looking up the allowable channels in a driver-local table and finally
- * registering those channels in the wiphy structure.
- *
- * Alternatively, drivers that trust the regulatory domain control here
- * will register a complete set of capabilities and the control code
- * will restrict the set by setting the IEEE80211_CHAN_* flags.
- */
-#include <linux/kernel.h>
-#include <net/wireless.h>
-#include "core.h"
-
-static char *ieee80211_regdom = "US";
-module_param(ieee80211_regdom, charp, 0444);
-MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
-
-struct ieee80211_channel_range {
- short start_freq;
- short end_freq;
- int max_power;
- int max_antenna_gain;
- u32 flags;
-};
-
-struct ieee80211_regdomain {
- const char *code;
- const struct ieee80211_channel_range *ranges;
- int n_ranges;
-};
-
-#define RANGE_PWR(_start, _end, _pwr, _ag, _flags) \
- { _start, _end, _pwr, _ag, _flags }
-
-
-/*
- * Ideally, in the future, these definitions will be loaded from a
- * userspace table via some daemon.
- */
-static const struct ieee80211_channel_range ieee80211_US_channels[] = {
- /* IEEE 802.11b/g, channels 1..11 */
- RANGE_PWR(2412, 2462, 27, 6, 0),
- /* IEEE 802.11a, channels 52..64 */
- RANGE_PWR(5260, 5320, 23, 6, 0),
- /* IEEE 802.11a, channels 149..165, outdoor */
- RANGE_PWR(5745, 5825, 30, 6, 0),
-};
-
-static const struct ieee80211_channel_range ieee80211_JP_channels[] = {
- /* IEEE 802.11b/g, channels 1..14 */
- RANGE_PWR(2412, 2484, 20, 6, 0),
- /* IEEE 802.11a, channels 34..48 */
- RANGE_PWR(5170, 5240, 20, 6, IEEE80211_CHAN_PASSIVE_SCAN),
- /* IEEE 802.11a, channels 52..64 */
- RANGE_PWR(5260, 5320, 20, 6, IEEE80211_CHAN_NO_IBSS |
- IEEE80211_CHAN_RADAR),
-};
-
-#define REGDOM(_code) \
- { \
- .code = __stringify(_code), \
- .ranges = ieee80211_ ##_code## _channels, \
- .n_ranges = ARRAY_SIZE(ieee80211_ ##_code## _channels), \
- }
-
-static const struct ieee80211_regdomain ieee80211_regdoms[] = {
- REGDOM(US),
- REGDOM(JP),
-};
-
-
-static const struct ieee80211_regdomain *get_regdom(void)
-{
- static const struct ieee80211_channel_range
- ieee80211_world_channels[] = {
- /* IEEE 802.11b/g, channels 1..11 */
- RANGE_PWR(2412, 2462, 27, 6, 0),
- };
- static const struct ieee80211_regdomain regdom_world = REGDOM(world);
- int i;
-
- for (i = 0; i < ARRAY_SIZE(ieee80211_regdoms); i++)
- if (strcmp(ieee80211_regdom, ieee80211_regdoms[i].code) == 0)
- return &ieee80211_regdoms[i];
-
- return &regdom_world;
-}
-
-
-static void handle_channel(struct ieee80211_channel *chan,
- const struct ieee80211_regdomain *rd)
-{
- int i;
- u32 flags = chan->orig_flags;
- const struct ieee80211_channel_range *rg = NULL;
-
- for (i = 0; i < rd->n_ranges; i++) {
- if (rd->ranges[i].start_freq <= chan->center_freq &&
- chan->center_freq <= rd->ranges[i].end_freq) {
- rg = &rd->ranges[i];
- break;
- }
- }
-
- if (!rg) {
- /* not found */
- flags |= IEEE80211_CHAN_DISABLED;
- chan->flags = flags;
- return;
- }
-
- chan->flags = flags;
- chan->max_antenna_gain = min(chan->orig_mag,
- rg->max_antenna_gain);
- chan->max_power = min(chan->orig_mpwr, rg->max_power);
-}
-
-static void handle_band(struct ieee80211_supported_band *sband,
- const struct ieee80211_regdomain *rd)
-{
- int i;
-
- for (i = 0; i < sband->n_channels; i++)
- handle_channel(&sband->channels[i], rd);
-}
-
-void wiphy_update_regulatory(struct wiphy *wiphy)
-{
- enum ieee80211_band band;
- const struct ieee80211_regdomain *rd = get_regdom();
-
- for (band = 0; band < IEEE80211_NUM_BANDS; band++)
- if (wiphy->bands[band])
- handle_band(wiphy->bands[band], rd);
-}