commit 18998c381b19bfc3c285361ff6200ded7444aa2c
author Eliad Peller <eliad@wizery.com> Wed Sep 10 14:07:34 2014 +0300
committer Johannes Berg <johannes.berg@intel.com> Thu Sep 11 13:37:02 2014 +0200
tree 077799dd26b28f6f54eae9a2c734ef71ff19b072
parent 59cd85cbcf2ecca9736652dc0cfd2ec600d7ef2a

cfg80211: allow requesting SMPS mode on ap start

Add feature bits to indicate device support for
static-smps and dynamic-smps modes.

Add a new NL80211_ATTR_SMPS_MODE attribue to allow
configuring the smps mode to be used by the ap
(e.g. configuring to ap to dynamic smps mode will
reduce power consumption while having minor effect
on throughput)

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/nl80211.c

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e8114c7..4cce3e1 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -394,6 +394,7 @@
 	[NL80211_ATTR_TSID] = { .type = NLA_U8 },
 	[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 	[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
+	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 };
 
 /* policy for the key attributes */
@@ -3345,6 +3346,29 @@
 			return PTR_ERR(params.acl);
 	}
 
+	if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
+		params.smps_mode =
+			nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
+		switch (params.smps_mode) {
+		case NL80211_SMPS_OFF:
+			break;
+		case NL80211_SMPS_STATIC:
+			if (!(rdev->wiphy.features &
+			      NL80211_FEATURE_STATIC_SMPS))
+				return -EINVAL;
+			break;
+		case NL80211_SMPS_DYNAMIC:
+			if (!(rdev->wiphy.features &
+			      NL80211_FEATURE_DYNAMIC_SMPS))
+				return -EINVAL;
+			break;
+		default:
+			return -EINVAL;
+		}
+	} else {
+		params.smps_mode = NL80211_SMPS_OFF;
+	}
+
 	wdev_lock(wdev);
 	err = rdev_start_ap(rdev, dev, &params);
 	if (!err) {