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mac80211: set default QoS values according to spec 

We've never really cared about the default QoS (WMM) values, but
we really should if the AP doesn't send any. This patch makes
mac80211 use the default values according to 802.11-2007, and
additionally syncs the default values when we disassociate so
whatever the last AP said gets "unconfigured".

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-05-07 16:16:24 +02:00 committed by John W. Linville
parent 58905ca5b1
commit aa837e1d6b
2 changed files with 51 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/mac80211/mlme.c
View File

@ -1043,6 +1043,8 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
rcu_read_unlock();
ieee80211_set_wmm_default(sdata);
ieee80211_recalc_idle(local);
/* channel(_type) changes are handled by ieee80211_hw_config */
@ -1658,6 +1660,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
if (elems.wmm_param)
ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param,
elems.wmm_param_len);
else
ieee80211_set_wmm_default(sdata);
if (elems.ht_info_elem && elems.wmm_param &&
(ifmgd->flags & IEEE80211_STA_WMM_ENABLED) &&

54
net/mac80211/util.c
View File

@ -708,26 +708,62 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_queue_params qparam;
int i;
int queue;
bool use_11b;
int aCWmin, aCWmax;
if (!local->ops->conf_tx)
return;
memset(&qparam, 0, sizeof(qparam));
qparam.aifs = 2;
use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&
!(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
!(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
qparam.cw_min = 31;
for (queue = 0; queue < local_to_hw(local)->queues; queue++) {
/* Set defaults according to 802.11-2007 Table 7-37 */
aCWmax = 1023;
if (use_11b)
aCWmin = 31;
else
qparam.cw_min = 15;
aCWmin = 15;
qparam.cw_max = 1023;
switch (queue) {
case 3: /* AC_BK */
qparam.cw_max = aCWmin;
qparam.cw_min = aCWmax;
qparam.txop = 0;
qparam.aifs = 7;
break;
default: /* never happens but let's not leave undefined */
case 2: /* AC_BE */
qparam.cw_max = aCWmin;
qparam.cw_min = aCWmax;
qparam.txop = 0;
qparam.aifs = 3;
break;
case 1: /* AC_VI */
qparam.cw_max = aCWmin;
qparam.cw_min = (aCWmin + 1) / 2 - 1;
if (use_11b)
qparam.txop = 6016/32;
else
qparam.txop = 3008/32;
qparam.aifs = 2;
break;
case 0: /* AC_VO */
qparam.cw_max = (aCWmin + 1) / 2 - 1;
qparam.cw_min = (aCWmin + 1) / 4 - 1;
if (use_11b)
qparam.txop = 3264/32;
else
qparam.txop = 1504/32;
qparam.aifs = 2;
break;
}
for (i = 0; i < local_to_hw(local)->queues; i++)
drv_conf_tx(local, i, &qparam);
drv_conf_tx(local, queue, &qparam);
}
}
void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,