Index: head/sys/dev/iwm/if_iwm.c
===================================================================
--- head/sys/dev/iwm/if_iwm.c
+++ head/sys/dev/iwm/if_iwm.c
@@ -3360,12 +3360,15 @@
 		uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
 
 		if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
-		    subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
-			tx->pm_frame_timeout = htole16(3);
-		else
-			tx->pm_frame_timeout = htole16(2);
+		    subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) {
+			tx->pm_frame_timeout = htole16(IWM_PM_FRAME_ASSOC);
+		} else if (subtype == IEEE80211_FC0_SUBTYPE_ACTION) {
+			tx->pm_frame_timeout = htole16(IWM_PM_FRAME_NONE);
+		} else {
+			tx->pm_frame_timeout = htole16(IWM_PM_FRAME_MGMT);
+		}
 	} else {
-		tx->pm_frame_timeout = htole16(0);
+		tx->pm_frame_timeout = htole16(IWM_PM_FRAME_NONE);
 	}
 
 	if (hdrlen & 3) {
Index: head/sys/dev/iwm/if_iwmreg.h
===================================================================
--- head/sys/dev/iwm/if_iwmreg.h
+++ head/sys/dev/iwm/if_iwmreg.h
@@ -4244,6 +4244,18 @@
 	IWM_TX_CMD_FLG_HCCA_CHUNK	= (1 << 31)
 }; /* IWM_TX_FLAGS_BITS_API_S_VER_1 */
 
+/**
+ * enum iwm_tx_pm_timeouts - pm timeout values in TX command
+ * @IWM_PM_FRAME_NONE: no need to suspend sleep mode
+ * @IWM_PM_FRAME_MGMT: fw suspend sleep mode for 100TU
+ * @IWM_PM_FRAME_ASSOC: fw suspend sleep mode for 10sec
+ */
+enum iwm_tx_pm_timeouts {
+	IWM_PM_FRAME_NONE           = 0,
+	IWM_PM_FRAME_MGMT           = 2,
+	IWM_PM_FRAME_ASSOC          = 3,
+};
+
 /*
  * TX command security control
  */