staging: rtl8723bs: Remove unnecessary length #define's.

This driver statically defines constants representing the size of
certain structs using literal integers as values.  Replace those
constants with the sizeof() macro.  Other length constants are already
defined in 'linux/ieee80211.h'; remove those #define's.

Signed-off-by: Quytelda Kahja <quytelda@tamalin.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_mlme_ext.c

@@ -1219,7 +1219,7 @@ unsigned int OnAssocReq(struct adapter *padapter, union recv_frame *precv_frame)
 	}
 
 
-	if (pkt_len < IEEE80211_3ADDR_LEN + ie_offset) {
+	if (pkt_len < sizeof(struct ieee80211_hdr_3addr) + ie_offset) {
 		DBG_871X("handle_assoc(reassoc =%d) - too short payload (len =%lu)"
 		       "\n", reassoc, (unsigned long)pkt_len);
 		return _FAIL;
@@ -1236,8 +1236,8 @@ unsigned int OnAssocReq(struct adapter *padapter, union recv_frame *precv_frame)
 	/* listen_interval = le16_to_cpu(*(unsigned short *)(pframe + WLAN_HDR_A3_LEN+2)); */
 	listen_interval = RTW_GET_LE16(pframe + WLAN_HDR_A3_LEN+2);
 
-	left = pkt_len - (IEEE80211_3ADDR_LEN + ie_offset);
-	pos = pframe + (IEEE80211_3ADDR_LEN + ie_offset);
+	left = pkt_len - (sizeof(struct ieee80211_hdr_3addr) + ie_offset);
+	pos = pframe + (sizeof(struct ieee80211_hdr_3addr) + ie_offset);
 
 
 	DBG_871X("%s\n", __func__);

drivers/staging/rtl8723bs/include/ieee80211.h

@@ -272,20 +272,6 @@ struct sta_data{
 	u64	tx_drops;
 };
 
-#define IEEE80211_DATA_LEN		2304
-/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
-   6.2.1.1.2.
-
-   The figure in section 7.1.2 suggests a body size of up to 2312
-   bytes is allowed, which is a bit confusing, I suspect this
-   represents the 2304 bytes of real data, plus a possible 8 bytes of
-   WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
-
-
-#define IEEE80211_HLEN			30
-#define IEEE80211_FRAME_LEN		(IEEE80211_DATA_LEN + IEEE80211_HLEN)
-
-
 /* this is stolen from ipw2200 driver */
 #define IEEE_IBSS_MAC_HASH_SIZE 31
 
@@ -313,8 +299,6 @@ enum eap_type {
 	EAPOL_ENCAP_ASF_ALERT
 };
 
-#define IEEE80211_3ADDR_LEN 24
-#define IEEE80211_4ADDR_LEN 30
 #define IEEE80211_FCS_LEN    4
 
 #define MIN_FRAG_THRESHOLD     256U