mac80211: add missing station flags to debugfs

My work and some previous work didn't add
all the flags, add them now and while at it
simplify the code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/debugfs_sta.c

@@ -56,19 +56,22 @@ STA_FILE(last_signal, last_signal, D);
 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 			      size_t count, loff_t *ppos)
 {
-	char buf[100];
+	char buf[121];
 	struct sta_info *sta = file->private_data;
 
-	int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
-		test_sta_flag(sta, WLAN_STA_AUTH) ? "AUTH\n" : "",
-		test_sta_flag(sta, WLAN_STA_ASSOC) ? "ASSOC\n" : "",
-		test_sta_flag(sta, WLAN_STA_PS_STA) ? "PS (sta)\n" : "",
-		test_sta_flag(sta, WLAN_STA_PS_DRIVER) ? "PS (driver)\n" : "",
-		test_sta_flag(sta, WLAN_STA_AUTHORIZED) ? "AUTHORIZED\n" : "",
-		test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE) ? "SHORT PREAMBLE\n" : "",
-		test_sta_flag(sta, WLAN_STA_WME) ? "WME\n" : "",
-		test_sta_flag(sta, WLAN_STA_WDS) ? "WDS\n" : "",
-		test_sta_flag(sta, WLAN_STA_MFP) ? "MFP\n" : "");
+#define TEST(flg) \
+	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
+
+	int res = scnprintf(buf, sizeof(buf),
+			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
+			    TEST(PS_DRIVER), TEST(AUTHORIZED),
+			    TEST(SHORT_PREAMBLE), TEST(ASSOC_AP),
+			    TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
+			    TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
+			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
+			    TEST(TDLS_PEER_AUTH));
+#undef TEST
 	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }
 STA_OPS(flags);