FST: Remove the IE header len/size macros

These are confusing when the style used with the couple of FST IE checks
differs from the rest of hostapd/wpa_supplicant implementation.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/common/ieee802_11_common.c

@@ -960,17 +960,14 @@ const char * fc2str(u16 fc)
 }
 
 
-#define IE_HEADER_SIZE               ((u8) (2 * sizeof(u8)))
-#define IE_BUFFER_LENGTH(ie_len_val) ((ie_len_val) + IE_HEADER_SIZE)
-
 int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf,
 		       size_t ies_len)
 {
 	os_memset(info, 0, sizeof(*info));
 
-	while (ies_buf && ies_len >= IE_HEADER_SIZE &&
+	while (ies_buf && ies_len >= 2 &&
 	       info->nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
-		size_t len = IE_BUFFER_LENGTH(ies_buf[1]);
+		size_t len = 2 + ies_buf[1];
 
 		if (len > ies_len) {
 			wpa_hexdump(MSG_DEBUG, "Truncated IEs",
@@ -980,7 +977,7 @@ int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf,
 
 		if (ies_buf[0] == WLAN_EID_MULTI_BAND) {
 			wpa_printf(MSG_DEBUG, "MB IE of %zu bytes found", len);
-			info->ies[info->nof_ies].ie = ies_buf + IE_HEADER_SIZE;
+			info->ies[info->nof_ies].ie = ies_buf + 2;
 			info->ies[info->nof_ies].ie_len = ies_buf[1];
 			info->nof_ies++;
 		}
@@ -1004,7 +1001,7 @@ struct wpabuf * mb_ies_by_info(struct mb_ies_info *info)
 		size_t mb_ies_size = 0;
 
 		for (i = 0; i < info->nof_ies; i++)
-			mb_ies_size += IE_BUFFER_LENGTH(info->ies[i].ie_len);
+			mb_ies_size += 2 + info->ies[i].ie_len;
 
 		mb_ies = wpabuf_alloc(mb_ies_size);
 		if (mb_ies) {

src/fst/fst_group.c

@@ -41,11 +41,11 @@ static void fst_dump_mb_ies(const char *group_id, const char *ifname,
 	const u8 *p = wpabuf_head(mbies);
 	size_t s = wpabuf_len(mbies);
 
-	while (s >= offsetof(struct multi_band_ie, mb_ctrl)) {
+	while (s >= 2) {
 		const struct multi_band_ie *mbie =
 			(const struct multi_band_ie *) p;
 		WPA_ASSERT(mbie->eid == WLAN_EID_MULTI_BAND);
-		WPA_ASSERT(IE_BUFFER_LENGTH(mbie->len) >= sizeof(*mbie));
+		WPA_ASSERT(2 + mbie->len >= sizeof(*mbie));
 
 		fst_printf(MSG_WARNING,
 			   "%s: %s: mb_ctrl=%u band_id=%u op_class=%u chan=%u bssid="
@@ -61,8 +61,8 @@ static void fst_dump_mb_ies(const char *group_id, const char *ifname,
 			   mbie->mb_connection_capability,
 			   mbie->fst_session_tmout);
 
-		p += IE_BUFFER_LENGTH(mbie->len);
+		p += 2 + mbie->len;
-		s -= IE_BUFFER_LENGTH(mbie->len);
+		s -= 2 + mbie->len;
 	}
 }
 
@@ -81,7 +81,7 @@ static void fst_fill_mb_ie(struct wpabuf *buf, const u8 *bssid,
 	os_memset(mbie, 0, len);
 
 	mbie->eid = WLAN_EID_MULTI_BAND;
-	mbie->len = len - IE_HEADER_SIZE;
+	mbie->len = len - 2;
 #ifdef HOSTAPD
 	mbie->mb_ctrl = MB_STA_ROLE_AP;
 	mbie->mb_connection_capability = MB_CONNECTION_CAPABILITY_AP;
@@ -211,7 +211,7 @@ static const u8 * fst_mbie_get_peer_addr(const struct multi_band_ie *mbie)
 		break;
 	case MB_STA_ROLE_NON_PCP_NON_AP:
 		if (mbie->mb_ctrl & MB_CTRL_STA_MAC_PRESENT &&
-		    IE_BUFFER_LENGTH(mbie->len) >= sizeof(*mbie) + ETH_ALEN)
+		    (size_t) 2 + mbie->len >= sizeof(*mbie) + ETH_ALEN)
 			peer_addr = (const u8 *) &mbie[1];
 		break;
 	default:
@@ -229,12 +229,12 @@ fst_group_get_new_iface_by_mbie_and_band_id(struct fst_group *g,
 					    u8 band_id,
 					    u8 *iface_peer_addr)
 {
-	while (mb_ies_size >= offsetof(struct multi_band_ie, mb_ctrl)) {
+	while (mb_ies_size >= 2) {
 		const struct multi_band_ie *mbie =
 			(const struct multi_band_ie *) mb_ies_buff;
 
 		if (mbie->eid != WLAN_EID_MULTI_BAND ||
-		    IE_BUFFER_LENGTH(mbie->len) < sizeof(*mbie))
+		    (size_t) 2 + mbie->len < sizeof(*mbie))
 			break;
 
 		if (mbie->band_id == band_id) {
@@ -255,8 +255,8 @@ fst_group_get_new_iface_by_mbie_and_band_id(struct fst_group *g,
 			break;
 		}
 
-		mb_ies_buff += IE_BUFFER_LENGTH(mbie->len);
+		mb_ies_buff += 2 + mbie->len;
-		mb_ies_size -= IE_BUFFER_LENGTH(mbie->len);
+		mb_ies_size -= 2 + mbie->len;
 	}
 
 	return NULL;

src/fst/fst_internal.h

@@ -45,9 +45,6 @@ fst_hw_mode_to_band(enum hostapd_hw_mode mode)
 	}
 }
 
-#define IE_HEADER_SIZE               ((u8) (2 * sizeof(u8)))
-#define IE_BUFFER_LENGTH(ie_len_val) ((size_t) ((ie_len_val) + IE_HEADER_SIZE))
-
 struct fst_ctrl_handle {
 	struct fst_ctrl ctrl;
 	struct dl_list global_ctrls_lentry;