commit 98f7dfd86cbbd377e2cbc293529681b914296f68
author Emmanuel Grumbach <emmanuel.grumbach@intel.com> Fri Jul 18 13:52:59 2008 +0800
committer John W. Linville <linville@tuxdriver.com> Mon Aug 04 15:09:07 2008 -0400
tree cce0e06183ae4b8ce0aa845cb56cf9ca90984749
parent 298df1f62aa69881528bf0f1c3c14395bc447846

mac80211: pass dtim_period to low level driver

This patch adds the dtim_period in ieee80211_bss_conf, this allows the low
level driver to know the dtim_period, and to plan power save accordingly.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mlme.c

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index acb0413..591e633 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -551,6 +551,7 @@
 			/* set timing information */
 			sdata->bss_conf.beacon_int = bss->beacon_int;
 			sdata->bss_conf.timestamp = bss->timestamp;
+			sdata->bss_conf.dtim_period = bss->dtim_period;
 
 			changed |= ieee80211_handle_bss_capability(sdata, bss);
 
@@ -2688,6 +2689,16 @@
 	bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
 	bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
 
+	if (elems->tim) {
+		struct ieee80211_tim_ie *tim_ie =
+			(struct ieee80211_tim_ie *)elems->tim;
+		bss->dtim_period = tim_ie->dtim_period;
+	}
+
+	/* set default value for buggy APs */
+	if (!elems->tim || bss->dtim_period == 0)
+		bss->dtim_period = 1;
+
 	bss->supp_rates_len = 0;
 	if (elems->supp_rates) {
 		clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;