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mac80211: set default QoS values according to spec

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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) &&

58
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;
else
qparam.cw_min = 15;
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
aCWmin = 15;
qparam.cw_max = 1023;
qparam.txop = 0;
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,