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| author | Johannes Berg <johannes.berg@intel.com> | 2013-02-07 11:47:44 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-02-15 09:41:30 +0100 |
| commit | e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5 (patch) | |
| tree | 18e5c9bd022ea469e7350a52ca67ce505a7608e6 /net/mac80211/rc80211_minstrel_ht.c | |
| parent | 4a34215ef7487b1cbd783e7cc485eb03de893bd0 (diff) | |
| download | blackbird-op-linux-e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5.tar.gz blackbird-op-linux-e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5.zip | |
mac80211: stop toggling IEEE80211_HT_CAP_SUP_WIDTH_20_40
For VHT, many more bandwidth changes are possible. As a first
step, stop toggling the IEEE80211_HT_CAP_SUP_WIDTH_20_40 flag
in the HT capabilities and instead introduce a bandwidth field
indicating the currently usable bandwidth to transmit to the
station. Of course, make all drivers use it.
To achieve this, make ieee80211_ht_cap_ie_to_sta_ht_cap() get
the station as an argument, rather than the new capabilities,
so it can set up the new bandwidth field.
If the station is a VHT station and VHT bandwidth is in use,
also set the bandwidth accordingly.
Doing this allows us to get rid of the supports_40mhz flag as
the HT capabilities now reflect the true capability instead of
the current setting.
While at it, also fix ieee80211_ht_cap_ie_to_sta_ht_cap() to not
ignore HT cap overrides when MCS TX isn't supported (not that it
really happens...)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht.c')
| -rw-r--r-- | net/mac80211/rc80211_minstrel_ht.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index 6e35dcd2aa2f..6176c71d47ff 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -848,8 +848,6 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband, IEEE80211_HT_CAP_SM_PS_SHIFT; for (i = 0; i < ARRAY_SIZE(mi->groups); i++) { - u16 req = 0; - mi->groups[i].supported = 0; if (i == MINSTREL_CCK_GROUP) { minstrel_ht_update_cck(mp, mi, sband, sta); @@ -857,16 +855,17 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband, } if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI) { - if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) - req |= IEEE80211_HT_CAP_SGI_40; - else - req |= IEEE80211_HT_CAP_SGI_20; + if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) { + if (!(sta_cap & IEEE80211_HT_CAP_SGI_40)) + continue; + } else { + if (!(sta_cap & IEEE80211_HT_CAP_SGI_20)) + continue; + } } - if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) - req |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; - - if ((sta_cap & req) != req) + if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH && + sta->bandwidth < IEEE80211_STA_RX_BW_40) continue; /* Mark MCS > 7 as unsupported if STA is in static SMPS mode */ |
