xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mac80211: set HT channel before association

Browse Source 
Changing the channel type during operation is
confusing to some drivers and will be hard to
handle in multi-channel scenarios. Instead of
changing the channel, set it to the right HT
channel before authenticating/associating and
don't change it -- just update the 20/40 MHz
restrictions in rate control as needed when
changed by the AP.

This also fixes a problem that Paul missed in
his fix for the "regulatory makes us deaf"
issue -- when we couldn't use 40 MHz we still
associated saying we were using 40 MHz, which
could in similarly broken APs make us never
even connect successfully.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2012-03-28 10:58:36 +02:00
committed by John W. Linville
parent 1d98fb122d
commit 24398e39c8
4 changed files with 117 additions and 138 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/mac80211/ht.c
View File

@@ -19,15 +19,6 @@
#include "ieee80211_i.h"
#include "rate.h"
bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata)
{
const __le16 flg = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40);
if ((sdata->u.mgd.ht_capa_mask.cap_info & flg) &&
!(sdata->u.mgd.ht_capa.cap_info & flg))
return true;
return false;
}
static void __check_htcap_disable(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_ht_cap *ht_cap,
u16 flag)