net/wireless/scan.c

176 bool cfg80211_is_element_inherited(const struct element *elem,
182 	if (elem->id == WLAN_EID_MULTIPLE_BSSID)
185 	if (elem->id == WLAN_EID_EXTENSION && elem->datalen > 1 &&
186 	    elem->data[0] == WLAN_EID_EXT_EHT_MULTI_LINK)
207 	if (elem->id == WLAN_EID_EXTENSION) {
212 		id = elem->data[0];
218 		id = elem->id;
230 static size_t cfg80211_copy_elem_with_frags(const struct element *elem,
234 	if (WARN_ON((u8 *)elem < ie || elem->data > ie + ie_len ||
235 		    elem->data + elem->datalen > ie + ie_len))
238 	if (elem->datalen + 2 > buf + buf_len - *pos)
241 	memcpy(*pos, elem, elem->datalen + 2);
242 	*pos += elem->datalen + 2;
245 	if (elem->datalen != 255)
248 	ie_len = ie + ie_len - elem->data - elem->datalen;
249 	ie = (const u8 *)elem->data + elem->datalen;
251 	for_each_element(elem, ie, ie_len) {
252 		if (elem->id != WLAN_EID_FRAGMENT)
255 		if (elem->datalen + 2 > buf + buf_len - *pos)
258 		memcpy(*pos, elem, elem->datalen + 2);
259 		*pos += elem->datalen + 2;
261 		if (elem->datalen != 255)
519 				    const struct element **elem, u32 *s_ssid)
522 	*elem = cfg80211_find_elem(WLAN_EID_SSID, ies->data, ies->len);
523 	if (!*elem || (*elem)->datalen > IEEE80211_MAX_SSID_LEN)
526 	*s_ssid = ~crc32_le(~0, (*elem)->data, (*elem)->datalen);
1347 	const struct element *elem;
1349 	for_each_element_id(elem, eid, ies, len) {
1350 		if (elem->datalen >= match_offset + match_len &&
1351 		    !memcmp(elem->data + match_offset, match, match_len))
1352 			return elem;
1363 	const struct element *elem;
1370 	elem = cfg80211_find_elem_match(WLAN_EID_VENDOR_SPECIFIC, ies, len,
1373 	if (!elem || elem->datalen < 4)
1376 	return elem;
2393 	const struct element *elem, *sub;
2418 	for_each_element_id(elem, WLAN_EID_MULTIPLE_BSSID,
2420 		if (elem->datalen < 4)
2422 		if (elem->data[0] < 1 || (int)elem->data[0] > 8)
2424 		for_each_element(sub, elem->data + 1, elem->datalen - 1) {
2444 							     elem,
2456 			    mbssid_index_ie[2] >= (1 << elem->data[0])) {
2469 			data.max_bssid_indicator = elem->data[0];
2500 ssize_t cfg80211_defragment_element(const struct element *elem, const u8 *ies,
2508 	if (!elem)
2511 	/* elem might be invalid after the memmove */
2512 	next = (void *)(elem->data + elem->datalen);
2513 	elem_datalen = elem->datalen;
2515 	if (elem->id == WLAN_EID_EXTENSION) {
2516 		copied = elem->datalen - 1;
2522 			memmove(data, elem->data + 1, copied);
2525 		copied = elem->datalen;
2531 			memmove(data, elem->data, copied);
2539 	for (elem = next;
2540 	     elem->data < ies + ieslen &&
2541 		elem->data + elem->datalen <= ies + ieslen;
2542 	     elem = next) {
2543 		/* elem might be invalid after the memmove */
2544 		next = (void *)(elem->data + elem->datalen);
2546 		if (elem->id != frag_id)
2549 		elem_datalen = elem->datalen;
2555 			memmove(data + copied, elem->data, elem_datalen);
2582 	const struct element *elem;
2593 	for_each_element(elem, mle->data + mle->datalen,
2595 		if (elem->id != WLAN_EID_FRAGMENT)
2598 		buf_len += elem->datalen;
2619 	for_each_element_id(elem, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE,
2621 		res->sta_prof[idx] = (void *)elem->data;
2622 		res->sta_prof_len[idx] = elem->datalen;
2628 	if (!for_each_element_completed(elem, ie, ielen))
2637 		elem = (void *)res->sta_prof[idx] - 2;
2644 			buf_len = ielen + ie - (u8 *)elem;
2647 			cfg80211_defragment_element(elem,
2648 						    (u8 *)elem, buf_len,
2748 	const struct element *elem;
2772 	elem = cfg80211_find_elem(WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
2774 	if (elem && elem->datalen >= 1) {
2775 		ap_info.op_class = elem->data[0];
2797 	if (cfg80211_calc_short_ssid(ies, &elem, &short_ssid))
2840 				const struct element *elem,
2860 	if (!ieee80211_mle_type_ok(elem->data + 1,
2862 				   elem->datalen - 1))
2865 	ml_elem = (void *)(elem->data + 1);
2875 	reporter_link_id = ieee80211_mle_get_link_id(elem->data + 1);
2876 	bss_change_count = ieee80211_mle_get_bss_param_ch_cnt(elem->data + 1);
2884 	mld_id = ieee80211_mle_get_mld_id(elem->data + 1);
2887 	mle = cfg80211_defrag_mle(elem, tx_data->ie, tx_data->ielen, gfp);
3062 	const struct element *elem;
3070 	for_each_element_extid(elem, WLAN_EID_EXT_EHT_MULTI_LINK,
3073 						elem, gfp);
3160 		const struct element *elem;
3167 		elem = cfg80211_find_elem(WLAN_EID_S1G_BCN_COMPAT, ie, ielen);
3168 		if (!elem)
3170 		if (elem->datalen < sizeof(*compat))
3172 		compat = (void *)elem->data;