Remove unused STA entry information

previous_ap and last_assoc_req were not really used for anything
meaninful, so get rid of them to reduce the size of per-STA memory
allocation.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/ap/ap_mlme.c

@@ -120,8 +120,6 @@ void mlme_associate_indication(struct hostapd_data *hapd, struct sta_info *sta)
  * reassociation procedure that was initiated by that specific peer MAC entity.
  *
  * PeerSTAAddress = sta->addr
- *
- * sta->previous_ap contains the "Current AP" information from ReassocReq.
  */
 void mlme_reassociate_indication(struct hostapd_data *hapd,
 				 struct sta_info *sta)

src/ap/iapp.c

@@ -242,29 +242,22 @@ static void iapp_send_layer2_update(struct iapp_data *iapp, u8 *addr)
  */
 void iapp_new_station(struct iapp_data *iapp, struct sta_info *sta)
 {
-	struct ieee80211_mgmt *assoc;
-	u16 seq;
+	u16 seq = 0; /* TODO */
 
 	if (iapp == NULL)
 		return;
 
-	assoc = sta->last_assoc_req;
-	seq = assoc ? WLAN_GET_SEQ_SEQ(le_to_host16(assoc->seq_ctrl)) : 0;
-
 	/* IAPP-ADD.request(MAC Address, Sequence Number, Timeout) */
 	hostapd_logger(iapp->hapd, sta->addr, HOSTAPD_MODULE_IAPP,
 		       HOSTAPD_LEVEL_DEBUG, "IAPP-ADD.request(seq=%d)", seq);
 	iapp_send_layer2_update(iapp, sta->addr);
 	iapp_send_add(iapp, sta->addr, seq);
 
-	if (assoc && WLAN_FC_GET_STYPE(le_to_host16(assoc->frame_control)) ==
-	    WLAN_FC_STYPE_REASSOC_REQ) {
-		/* IAPP-MOVE.request(MAC Address, Sequence Number, Old AP,
-		 *                   Context Block, Timeout)
-		 */
-		/* TODO: Send IAPP-MOVE to the old AP; Map Old AP BSSID to
-		 * IP address */
-	}
+	/* TODO: If this was reassociation:
+	 * IAPP-MOVE.request(MAC Address, Sequence Number, Old AP,
+	 *                   Context Block, Timeout)
+	 * TODO: Send IAPP-MOVE to the old AP; Map Old AP BSSID to
+	 * IP address */
 }
 
 

src/ap/ieee802_11.c

@@ -1445,17 +1445,6 @@ static void handle_assoc(struct hostapd_data *hapd,
 	}
 #endif /* CONFIG_IEEE80211W */
 
-	if (reassoc) {
-		os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
-			  ETH_ALEN);
-	}
-
-	if (sta->last_assoc_req)
-		os_free(sta->last_assoc_req);
-	sta->last_assoc_req = os_malloc(len);
-	if (sta->last_assoc_req)
-		os_memcpy(sta->last_assoc_req, mgmt, len);
-
 	/* Make sure that the previously registered inactivity timer will not
 	 * remove the STA immediately. */
 	sta->timeout_next = STA_NULLFUNC;
@@ -1924,7 +1913,7 @@ static void handle_assoc_cb(struct hostapd_data *hapd,
 		status = le_to_host16(mgmt->u.assoc_resp.status_code);
 
 	if (status != WLAN_STATUS_SUCCESS)
-		goto fail;
+		return;
 
 	/* Stop previous accounting session, if one is started, and allocate
 	 * new session id for the new session. */
@@ -1986,7 +1975,7 @@ static void handle_assoc_cb(struct hostapd_data *hapd,
 		ap_sta_disconnect(hapd, sta, sta->addr,
 				  WLAN_REASON_DISASSOC_AP_BUSY);
 
-		goto fail;
+		return;
 	}
 
 	if (sta->flags & WLAN_STA_WDS) {
@@ -2006,11 +1995,11 @@ static void handle_assoc_cb(struct hostapd_data *hapd,
 		 * interface selection is not going to change anymore.
 		 */
 		if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
-			goto fail;
+			return;
 	} else if (sta->vlan_id) {
 		/* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
 		if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
-			goto fail;
+			return;
 	}
 
 	hostapd_set_sta_flags(hapd, sta);
@@ -2022,13 +2011,6 @@ static void handle_assoc_cb(struct hostapd_data *hapd,
 	hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
 
 	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
-
- fail:
-	/* Copy of the association request is not needed anymore */
-	if (sta->last_assoc_req) {
-		os_free(sta->last_assoc_req);
-		sta->last_assoc_req = NULL;
-	}
 }
 
 

src/ap/sta_info.c

@@ -239,7 +239,6 @@ void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 		radius_client_flush_auth(hapd->radius, sta->addr);
 #endif /* CONFIG_NO_RADIUS */
 
-	os_free(sta->last_assoc_req);
 	os_free(sta->challenge);
 
 #ifdef CONFIG_IEEE80211W

src/ap/sta_info.h

@@ -61,7 +61,6 @@ struct sta_info {
 	unsigned int hs20_deauth_requested:1;
 
 	u16 auth_alg;
-	u8 previous_ap[6];
 
 	enum {
 		STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE,
@@ -74,9 +73,6 @@ struct sta_info {
 	/* IEEE 802.1X related data */
 	struct eapol_state_machine *eapol_sm;
 
-	/* IEEE 802.11f (IAPP) related data */
-	struct ieee80211_mgmt *last_assoc_req;
-
 	u32 acct_session_id_hi;
 	u32 acct_session_id_lo;
 	struct os_reltime acct_session_start;