diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 54c8789..5286de5 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -816,9 +816,11 @@
 } __attribute__((packed));
 
 /* 802.11 BAR control masks */
-#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
-#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
-
+#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL	0x0000
+#define IEEE80211_BAR_CTRL_MULTI_TID		0x0002
+#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA	0x0004
+#define IEEE80211_BAR_CTRL_TID_INFO_MASK	0xf000
+#define IEEE80211_BAR_CTRL_TID_INFO_SHIFT	12
 
 #define IEEE80211_HT_MCS_MASK_LEN		10
 
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index b7075f3..018108d 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -128,7 +128,7 @@
 	memcpy(bar->ta, sdata->vif.addr, ETH_ALEN);
 	bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
 	bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
-	bar_control |= (u16)(tid << 12);
+	bar_control |= (u16)(tid << IEEE80211_BAR_CTRL_TID_INFO_SHIFT);
 	bar->control = cpu_to_le16(bar_control);
 	bar->start_seq_num = cpu_to_le16(ssn);