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mac80211: Minstrel HT: Handle all SMPS states of the peer STA.

Message ID 1433269667-9588-1-git-send-email-chaitanya.mgit@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Johannes Berg
Headers show

Commit Message

Krishna Chaitanya June 2, 2015, 6:27 p.m. UTC 
From: Chaitanya Tata <chaitanya.mgit@gmail.com>

In case of Dynamic SMPS enable RTS/CTS for all rates.
In case of Static SMPS mark the Nss > 1 rates as not supported.
---
 net/mac80211/rc80211_minstrel_ht.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
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Patch

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 7430a1d..fdc08d0 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -1176,9 +1176,16 @@  minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 
 		nss = minstrel_mcs_groups[i].streams;
 
-		/* Mark MCS > 7 as unsupported if STA is in static SMPS mode */
-		if (sta->smps_mode == IEEE80211_SMPS_STATIC && nss > 1)
-			continue;
+		/* Handle STA's SMPS State, if Nss > 1.
+		* a. Use RTS_CTS, if STA is in Dynamic SMPS Mode
+		* b. Mark Nss > 1 as unsupported, if STA is in static SMPS mode
+		*/
+		if (nss > 1) {
+			if (sta->smps_mode == IEEE80211_SMPS_DYNAMIC)
+			       gflags |= IEEE80211_TX_RC_USE_RTS_CTS;
+			else if (sta->smps_mode == IEEE80211_SMPS_STATIC)
+				continue;
+		}
 
 		/* HT rate */
 		if (gflags & IEEE80211_TX_RC_MCS) {