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authorJohannes Berg <johannes@sipsolutions.net>2009-05-07 16:16:24 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-05-11 15:23:54 -0400
commitaa837e1d6bd1a71b3c30c7738b6c29d41512fe7d (patch)
treeee5ad78a279d22fb63821e4664de7ce03fe6d4d8 /net
parent58905ca5b11a0ff3860f55b789cbbf052f7158a7 (diff)
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mlme.c4
-rw-r--r--net/mac80211/util.c60
2 files changed, 52 insertions, 12 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 75c487229f2..c5445bae9d6 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -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) &&
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 97b613affe0..0689a8fbd1e 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -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;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
- qparam.cw_min = 31;
- else
- qparam.cw_min = 15;
+ use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&
+ !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);
- qparam.cw_max = 1023;
- qparam.txop = 0;
+ 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;
+
+ 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,