lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] mac80211: regulatory domain cleanup

Browse Source 
Currently, a function misnamed ieee80211_init_client() is used to handle
regulatory domain control. It is called from
ieee80211_register_hwmode(), which typically runs 2 or 3 times
(802.11a/b/g), but each time it iterates over all the modes.

This patch cleans this up and removes the confusion:
ieee80211_init_client was effectively renamed to
ieee80211_set_default_regdomain and is now run on a per-mode basis
(doesn't have to deal with netdevs). I also moved the regdomain handling
code into its own file and added some documentation.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Acked-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Drake
2007-06-09 19:07:14 +01:00
committed by John W. Linville
parent 7c8081eb8f
commit fd8bacc980
5 changed files with 164 additions and 135 deletions
Download Patch File Download Diff File Expand all files Collapse all files

133
net/mac80211/ieee80211_ioctl.c
View File

@@ -27,20 +27,6 @@
#include "aes_ccm.h"
#include "debugfs_key.h"
static int ieee80211_regdom = 0x10; /* FCC */
module_param(ieee80211_regdom, int, 0444);
MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK");
/*
* If firmware is upgraded by the vendor, additional channels can be used based
* on the new Japanese regulatory rules. This is indicated by setting
* ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel
* module.
*/
static int ieee80211_japan_5ghz /* = 0 */;
module_param(ieee80211_japan_5ghz, int, 0444);
MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz");
static void ieee80211_set_hw_encryption(struct net_device *dev,
struct sta_info *sta, u8 addr[ETH_ALEN],
struct ieee80211_key *key)
@@ -412,125 +398,6 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev,
}
struct ieee80211_channel_range {
short start_freq;
short end_freq;
unsigned char power_level;
unsigned char antenna_max;
};
static const struct ieee80211_channel_range ieee80211_fcc_channels[] = {
{ 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */,
{ 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */,
{ 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */,
{ 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */,
{ 0 }
};
static const struct ieee80211_channel_range ieee80211_mkk_channels[] = {
{ 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */,
{ 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */,
{ 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */,
{ 0 }
};
static const struct ieee80211_channel_range *channel_range =
ieee80211_fcc_channels;
static void ieee80211_unmask_channel(struct net_device *dev, int mode,
struct ieee80211_channel *chan)
{
int i;
chan->flag = 0;
if (ieee80211_regdom == 64 &&
(mode == MODE_ATHEROS_TURBO || mode == MODE_ATHEROS_TURBOG)) {
/* Do not allow Turbo modes in Japan. */
return;
}
for (i = 0; channel_range[i].start_freq; i++) {
const struct ieee80211_channel_range *r = &channel_range[i];
if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) {
if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz &&
chan->freq >= 5260 && chan->freq <= 5320) {
/*
* Skip new channels in Japan since the
* firmware was not marked having been upgraded
* by the vendor.
*/
continue;
}
if (ieee80211_regdom == 0x10 &&
(chan->freq == 5190 || chan->freq == 5210 ||
chan->freq == 5230)) {
/* Skip MKK channels when in FCC domain. */
continue;
}
chan->flag |= IEEE80211_CHAN_W_SCAN |
IEEE80211_CHAN_W_ACTIVE_SCAN |
IEEE80211_CHAN_W_IBSS;
chan->power_level = r->power_level;
chan->antenna_max = r->antenna_max;
if (ieee80211_regdom == 64 &&
(chan->freq == 5170 || chan->freq == 5190 ||
chan->freq == 5210 || chan->freq == 5230)) {
/*
* New regulatory rules in Japan have backwards
* compatibility with old channels in 5.15-5.25
* GHz band, but the station is not allowed to
* use active scan on these old channels.
*/
chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN;
}
if (ieee80211_regdom == 64 &&
(chan->freq == 5260 || chan->freq == 5280 ||
chan->freq == 5300 || chan->freq == 5320)) {
/*
* IBSS is not allowed on 5.25-5.35 GHz band
* due to radar detection requirements.
*/
chan->flag &= ~IEEE80211_CHAN_W_IBSS;
}
break;
}
}
}
static int ieee80211_unmask_channels(struct net_device *dev)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_hw_mode *mode;
int c;
list_for_each_entry(mode, &local->modes_list, list) {
for (c = 0; c < mode->num_channels; c++) {
ieee80211_unmask_channel(dev, mode->mode,
&mode->channels[c]);
}
}
return 0;
}
int ieee80211_init_client(struct net_device *dev)
{
if (ieee80211_regdom == 0x40)
channel_range = ieee80211_mkk_channels;
ieee80211_unmask_channels(dev);
return 0;
}
static int ieee80211_ioctl_siwmode(struct net_device *dev,
struct iw_request_info *info,
__u32 *mode, char *extra)