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iwlwifi: debugFs to enable/disable HT40 support

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Add debugfs file to enable/disable HT40(40MHz) channel support.
By default, 40MHz is supported if AP can support the function.

By echo "1" to "disable_ht40" file, iwlwifi driver will disable the
40MHz support and only allow 20MHz channel.

Because the information exchange happen during association time,
so enable/disable ht40 channel only can be performed when it is not
associated with AP.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy
2009-07-27 13:50:15 -07:00
committed by John W. Linville
parent 35a1e70dfe
commit 1e4247d457
4 changed files with 52 additions and 0 deletions
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drivers/net/wireless/iwlwifi/iwl-dev.h
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@@ -1164,6 +1164,7 @@ struct iwl_priv {
/* debugging info */
u32 framecnt_to_us;
atomic_t restrict_refcnt;
bool disable_ht40;
#ifdef CONFIG_IWLWIFI_DEBUGFS
/* debugfs */
struct iwl_debugfs *dbgfs;