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iwlwifi: add option to disable 5GHz band 

There are various problems happened on 5GHz band not observed on
2.4 GHz (microcode errors, queue stuck, etc... ) . Also roaming
between 5GHz AP and 2GHz does not work very well. To workaround
the problems add option to disable 5GHz support. This will help
on environments where APs are dual-band, and devices will not try
to associate on band where issues happen.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Stanislaw Gruszka 2012-04-19 09:51:24 -07:00 committed by John W. Linville
parent c15797e6af
commit f6b1154678
3 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/iwlwifi/iwl-agn.c
View File

@ -1307,6 +1307,9 @@ static int iwl_init_geos(struct iwl_priv *priv)
priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
}
if (iwlwifi_mod_params.disable_5ghz)
priv->bands[IEEE80211_BAND_5GHZ].n_channels = 0;
IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
priv->bands[IEEE80211_BAND_2GHZ].n_channels,
priv->bands[IEEE80211_BAND_5GHZ].n_channels);

4
drivers/net/wireless/iwlwifi/iwl-drv.c
View File

@ -1012,3 +1012,7 @@ module_param_named(auto_agg, iwlwifi_mod_params.auto_agg,
bool, S_IRUGO);
MODULE_PARM_DESC(auto_agg,
"enable agg w/o check traffic load (default: enable)");
module_param_named(5ghz_disable, iwlwifi_mod_params.disable_5ghz,
bool, S_IRUGO);
MODULE_PARM_DESC(5ghz_disable, "disable 5GHz band (default: 0 [enabled])");

2
drivers/net/wireless/iwlwifi/iwl-modparams.h
View File

@ -103,6 +103,7 @@ enum iwl_power_level {
* @ant_coupling: antenna coupling in dB, default = 0
* @bt_ch_announce: BT channel inhibition, default = enable
* @auto_agg: enable agg. without check, default = true
* @disable_5ghz: disable 5GHz capability, default = false
*/
struct iwl_mod_params {
int sw_crypto;
@ -119,6 +120,7 @@ struct iwl_mod_params {
int ant_coupling;
bool bt_ch_announce;
bool auto_agg;
bool disable_5ghz;
};
#endif /* #__iwl_shared_h__ */