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mac80211: simplify HT checks

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Always set/use IEEE80211_STA_DISABLE_11N instead
of duplicating the queue, WMM and HT checks in
all places.

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 2012-03-08 15:02:04 +01:00 committed by John W. Linville
parent de5036aae6
commit 4e74bfdb30
1 changed files with 26 additions and 31 deletions
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57
net/mac80211/mlme.c
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@ -192,33 +192,27 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
prev_chantype = sdata->vif.bss_conf.channel_type;
/* HT is not supported */
if (!sband->ht_cap.ht_supported)
enable_ht = false;
if (enable_ht) {
hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan,
sband->band);
/* check that channel matches the right operating channel */
if (local->hw.conf.channel->center_freq != hti_cfreq) {
/* Some APs mess this up, evidently.
* Netgear WNDR3700 sometimes reports 4 higher than
* the actual channel, for instance.
*/
printk(KERN_DEBUG
"%s: Wrong control channel in association"
" response: configured center-freq: %d"
" hti-cfreq: %d hti->control_chan: %d"
" band: %d. Disabling HT.\n",
sdata->name,
local->hw.conf.channel->center_freq,
hti_cfreq, hti->control_chan,
sband->band);
enable_ht = false;
}
hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan,
sband->band);
/* check that channel matches the right operating channel */
if (local->hw.conf.channel->center_freq != hti_cfreq) {
/* Some APs mess this up, evidently.
* Netgear WNDR3700 sometimes reports 4 higher than
* the actual channel, for instance.
*/
printk(KERN_DEBUG
"%s: Wrong control channel in association"
" response: configured center-freq: %d"
" hti-cfreq: %d hti->control_chan: %d"
" band: %d. Disabling HT.\n",
sdata->name,
local->hw.conf.channel->center_freq,
hti_cfreq, hti->control_chan,
sband->band);
enable_ht = false;
}
if (enable_ht) {
@ -335,9 +329,6 @@ static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
if (!sband->ht_cap.ht_supported)
return;
if (!ht_info_ie)
return;
@ -405,7 +396,6 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
u16 capab;
struct ieee80211_supported_band *sband;
u32 rates = 0;
struct ieee80211_bss *bss = (void *)assoc_data->bss->priv;
lockdep_assert_held(&ifmgd->mtx);
@ -566,8 +556,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
offset = noffset;
}
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N) &&
bss->wmm_used && local->hw.queues >= 4)
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
ieee80211_add_ht_ie(sdata, skb, assoc_data->ht_information_ie,
sband, local->oper_channel, ifmgd->ap_smps);
@ -2147,7 +2136,6 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
changed |= BSS_CHANGED_QOS;
if (elems.ht_info_elem && elems.wmm_param &&
(sdata->local->hw.queues >= 4) &&
!(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
cbss->bssid, ap_ht_cap_flags,
@ -3232,6 +3220,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_bss *bss = (void *)req->bss->priv;
struct ieee80211_mgd_assoc_data *assoc_data;
struct ieee80211_supported_band *sband;
struct sta_info *sta;
const u8 *ssidie;
int i, err;
@ -3290,6 +3279,12 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
if (req->flags & ASSOC_REQ_DISABLE_HT)
ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
/* Also disable HT if we don't support it or the AP doesn't use WMM */
sband = local->hw.wiphy->bands[req->bss->channel->band];
if (!sband->ht_cap.ht_supported ||
local->hw.queues < 4 || !bss->wmm_used)
ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
sizeof(ifmgd->ht_capa_mask));