commit 19468413e8d98d44be8daf0acaf8d576dfc53fa2
author Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> Sat Jan 28 17:25:33 2012 +0100
committer John W. Linville <linville@tuxdriver.com> Mon Jan 30 15:48:26 2012 -0500
tree 99d7df720566824c4588ccff03c65e60c381e60d
parent 24db78c05b1e3ccb5a78aedd17aa1008c91dab5a

mac80211: add support for mcs masks

* Handle MCS masks set by the user.
* Match rates provided by the rate control algorithm to the mask set,
  also in HT mode, and switch back to legacy mode if necessary.
* add debugfs files to observate the rate selection

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/debugfs_netdev.c

diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 81d12e6..510ed1d 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -87,6 +87,21 @@
 #define IEEE80211_IF_FMT_SIZE(name, field)				\
 		IEEE80211_IF_FMT(name, field, "%zd\n")
 
+#define IEEE80211_IF_FMT_HEXARRAY(name, field)				\
+static ssize_t ieee80211_if_fmt_##name(					\
+	const struct ieee80211_sub_if_data *sdata,			\
+	char *buf, int buflen)						\
+{									\
+	char *p = buf;							\
+	int i;								\
+	for (i = 0; i < sizeof(sdata->field); i++) {			\
+		p += scnprintf(p, buflen + buf - p, "%.2x ",		\
+				 sdata->field[i]);			\
+	}								\
+	p += scnprintf(p, buflen + buf - p, "\n");			\
+	return p - buf;							\
+}
+
 #define IEEE80211_IF_FMT_ATOMIC(name, field)				\
 static ssize_t ieee80211_if_fmt_##name(					\
 	const struct ieee80211_sub_if_data *sdata,			\
@@ -148,6 +163,11 @@
 		  HEX);
 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
 		  HEX);
+IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
+		  rc_rateidx_mcs_mask[IEEE80211_BAND_2GHZ], HEXARRAY);
+IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
+		  rc_rateidx_mcs_mask[IEEE80211_BAND_5GHZ], HEXARRAY);
+
 IEEE80211_IF_FILE(flags, flags, HEX);
 IEEE80211_IF_FILE(state, state, LHEX);
 IEEE80211_IF_FILE(channel_type, vif.bss_conf.channel_type, DEC);
@@ -442,6 +462,8 @@
 	DEBUGFS_ADD(channel_type);
 	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 	DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 
 	DEBUGFS_ADD(bssid);
 	DEBUGFS_ADD(aid);
@@ -459,6 +481,8 @@
 	DEBUGFS_ADD(channel_type);
 	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 	DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 
 	DEBUGFS_ADD(num_sta_authorized);
 	DEBUGFS_ADD(num_sta_ps);
@@ -469,6 +493,12 @@
 
 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
 {
+	DEBUGFS_ADD(channel_type);
+	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
+
 	DEBUGFS_ADD_MODE(tsf, 0600);
 }
 
@@ -480,6 +510,8 @@
 	DEBUGFS_ADD(channel_type);
 	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 	DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 
 	DEBUGFS_ADD(peer);
 }
@@ -492,6 +524,8 @@
 	DEBUGFS_ADD(channel_type);
 	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
 	DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
+	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);
 }
 
 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)