2  * Copyright 2002-2005, Instant802 Networks, Inc.
3  * Copyright 2005-2006, Devicescape Software, Inc.
4  * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
5  * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
6  * Copyright 2013-2014  Intel Mobile Communications GmbH
7  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
8  * Copyright (C) 2018-2021 Intel Corporation
29 #include "driver-ops.h"
38 static inline void ieee80211_rx_stats(struct net_device *dev, u32 len)  in ieee80211_rx_stats()  argument
40 	struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);  in ieee80211_rx_stats()
42 	u64_stats_update_begin(&tstats->syncp);  in ieee80211_rx_stats()
43 	tstats->rx_packets++;  in ieee80211_rx_stats()
44 	tstats->rx_bytes += len;  in ieee80211_rx_stats()
45 	u64_stats_update_end(&tstats->syncp);  in ieee80211_rx_stats()
51 	__le16 fc = hdr->frame_control;  in ieee80211_get_bssid()
60 			return hdr->addr1;  in ieee80211_get_bssid()
62 			return hdr->addr2;  in ieee80211_get_bssid()
64 		return hdr->addr3;  in ieee80211_get_bssid()
70 		return hdr->addr3;  in ieee80211_get_bssid()
75 			return hdr->addr1;  in ieee80211_get_bssid()
80 				return hdr->addr2;  in ieee80211_get_bssid()
83 				return hdr->addr1;  in ieee80211_get_bssid()
104 		__pskb_trim(skb, skb->len - present_fcs_len);  in remove_monitor_info()
114 	hdr = (void *)(skb->data + rtap_space);  in should_drop_frame()
116 	if (status->flag & (RX_FLAG_FAILED_FCS_CRC |  in should_drop_frame()
121 	if (unlikely(skb->len < 16 + present_fcs_len + rtap_space))  in should_drop_frame()
124 	if (ieee80211_is_ctl(hdr->frame_control) &&  in should_drop_frame()
125 	    !ieee80211_is_pspoll(hdr->frame_control) &&  in should_drop_frame()
126 	    !ieee80211_is_back_req(hdr->frame_control))  in should_drop_frame()
143 	if (status->chains)  in ieee80211_rx_radiotap_hdrlen()
144 		len += 4 * hweight8(status->chains);  in ieee80211_rx_radiotap_hdrlen()
146 	if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA)  in ieee80211_rx_radiotap_hdrlen()
153 	if (ieee80211_hw_check(&local->hw, SIGNAL_DBM))  in ieee80211_rx_radiotap_hdrlen()
156 	/* antenna field, if we don't have per-chain info */  in ieee80211_rx_radiotap_hdrlen()
157 	if (!status->chains)  in ieee80211_rx_radiotap_hdrlen()
163 	if (status->encoding == RX_ENC_HT) /* HT info */  in ieee80211_rx_radiotap_hdrlen()
166 	if (status->flag & RX_FLAG_AMPDU_DETAILS) {  in ieee80211_rx_radiotap_hdrlen()
171 	if (status->encoding == RX_ENC_VHT) {  in ieee80211_rx_radiotap_hdrlen()
176 	if (local->hw.radiotap_timestamp.units_pos >= 0) {  in ieee80211_rx_radiotap_hdrlen()
181 	if (status->encoding == RX_ENC_HE &&  in ieee80211_rx_radiotap_hdrlen()
182 	    status->flag & RX_FLAG_RADIOTAP_HE) {  in ieee80211_rx_radiotap_hdrlen()
188 	if (status->encoding == RX_ENC_HE &&  in ieee80211_rx_radiotap_hdrlen()
189 	    status->flag & RX_FLAG_RADIOTAP_HE_MU) {  in ieee80211_rx_radiotap_hdrlen()
195 	if (status->chains) {  in ieee80211_rx_radiotap_hdrlen()
197 		len += 2 * hweight8(status->chains);  in ieee80211_rx_radiotap_hdrlen()
200 	if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {  in ieee80211_rx_radiotap_hdrlen()
201 		struct ieee80211_vendor_radiotap *rtap = (void *)skb->data;  in ieee80211_rx_radiotap_hdrlen()
203 		/* alignment for fixed 6-byte vendor data header */  in ieee80211_rx_radiotap_hdrlen()
207 		if (WARN_ON(rtap->align == 0))  in ieee80211_rx_radiotap_hdrlen()
208 			rtap->align = 1;  in ieee80211_rx_radiotap_hdrlen()
209 		len = ALIGN(len, rtap->align);  in ieee80211_rx_radiotap_hdrlen()
210 		len += rtap->len + rtap->pad;  in ieee80211_rx_radiotap_hdrlen()
231 	if (skb->len < rtap_space + sizeof(action) +  in ieee80211_handle_mu_mimo_mon()
235 	if (!is_valid_ether_addr(sdata->u.mntr.mu_follow_addr))  in ieee80211_handle_mu_mimo_mon()
249 	if (!ether_addr_equal(action.hdr.addr1, sdata->u.mntr.mu_follow_addr))  in ieee80211_handle_mu_mimo_mon()
256 	skb_queue_tail(&sdata->skb_queue, skb);  in ieee80211_handle_mu_mimo_mon()
257 	ieee80211_queue_work(&sdata->local->hw, &sdata->work);  in ieee80211_handle_mu_mimo_mon()
261  * ieee80211_add_rx_radiotap_header - add radiotap header
279 	unsigned long chains = status->chains;  in ieee80211_add_rx_radiotap_header()
284 	if (status->flag & RX_FLAG_RADIOTAP_HE) {  in ieee80211_add_rx_radiotap_header()
285 		he = *(struct ieee80211_radiotap_he *)skb->data;  in ieee80211_add_rx_radiotap_header()
287 		WARN_ON_ONCE(status->encoding != RX_ENC_HE);  in ieee80211_add_rx_radiotap_header()
290 	if (status->flag & RX_FLAG_RADIOTAP_HE_MU) {  in ieee80211_add_rx_radiotap_header()
291 		he_mu = *(struct ieee80211_radiotap_he_mu *)skb->data;  in ieee80211_add_rx_radiotap_header()
295 	if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {  in ieee80211_add_rx_radiotap_header()
296 		rtap = *(struct ieee80211_vendor_radiotap *)skb->data;  in ieee80211_add_rx_radiotap_header()
301 	mpdulen = skb->len;  in ieee80211_add_rx_radiotap_header()
302 	if (!(has_fcs && ieee80211_hw_check(&local->hw, RX_INCLUDES_FCS)))  in ieee80211_add_rx_radiotap_header()
306 	memset(rthdr, 0, rtap_len - rtap.len - rtap.pad);  in ieee80211_add_rx_radiotap_header()
307 	it_present = &rthdr->it_present;  in ieee80211_add_rx_radiotap_header()
310 	rthdr->it_len = cpu_to_le16(rtap_len);  in ieee80211_add_rx_radiotap_header()
315 	if (!status->chains)  in ieee80211_add_rx_radiotap_header()
328 	if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {  in ieee80211_add_rx_radiotap_header()
345 		while ((pos - (u8 *)rthdr) & 7)  in ieee80211_add_rx_radiotap_header()
351 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_TSFT);  in ieee80211_add_rx_radiotap_header()
356 	if (has_fcs && ieee80211_hw_check(&local->hw, RX_INCLUDES_FCS))  in ieee80211_add_rx_radiotap_header()
358 	if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC))  in ieee80211_add_rx_radiotap_header()
360 	if (status->enc_flags & RX_ENC_FLAG_SHORTPRE)  in ieee80211_add_rx_radiotap_header()
365 	if (!rate || status->encoding != RX_ENC_LEGACY) {  in ieee80211_add_rx_radiotap_header()
375 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);  in ieee80211_add_rx_radiotap_header()
376 		if (status->bw == RATE_INFO_BW_10)  in ieee80211_add_rx_radiotap_header()
378 		else if (status->bw == RATE_INFO_BW_5)  in ieee80211_add_rx_radiotap_header()
380 		*pos = DIV_ROUND_UP(rate->bitrate, 5 * (1 << shift));  in ieee80211_add_rx_radiotap_header()
385 	put_unaligned_le16(status->freq, pos);  in ieee80211_add_rx_radiotap_header()
387 	if (status->bw == RATE_INFO_BW_10)  in ieee80211_add_rx_radiotap_header()
389 	else if (status->bw == RATE_INFO_BW_5)  in ieee80211_add_rx_radiotap_header()
392 	if (status->band == NL80211_BAND_5GHZ)  in ieee80211_add_rx_radiotap_header()
394 	else if (status->encoding != RX_ENC_LEGACY)  in ieee80211_add_rx_radiotap_header()
396 	else if (rate && rate->flags & IEEE80211_RATE_ERP_G)  in ieee80211_add_rx_radiotap_header()
406 	if (ieee80211_hw_check(&local->hw, SIGNAL_DBM) &&  in ieee80211_add_rx_radiotap_header()
407 	    !(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {  in ieee80211_add_rx_radiotap_header()
408 		*pos = status->signal;  in ieee80211_add_rx_radiotap_header()
409 		rthdr->it_present |=  in ieee80211_add_rx_radiotap_header()
416 	if (!status->chains) {  in ieee80211_add_rx_radiotap_header()
418 		*pos = status->antenna;  in ieee80211_add_rx_radiotap_header()
426 	if ((pos - (u8 *)rthdr) & 1)  in ieee80211_add_rx_radiotap_header()
428 	if (status->flag & RX_FLAG_FAILED_PLCP_CRC)  in ieee80211_add_rx_radiotap_header()
433 	if (status->encoding == RX_ENC_HT) {  in ieee80211_add_rx_radiotap_header()
436 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);  in ieee80211_add_rx_radiotap_header()
437 		*pos++ = local->hw.radiotap_mcs_details;  in ieee80211_add_rx_radiotap_header()
439 		if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)  in ieee80211_add_rx_radiotap_header()
441 		if (status->bw == RATE_INFO_BW_40)  in ieee80211_add_rx_radiotap_header()
443 		if (status->enc_flags & RX_ENC_FLAG_HT_GF)  in ieee80211_add_rx_radiotap_header()
445 		if (status->enc_flags & RX_ENC_FLAG_LDPC)  in ieee80211_add_rx_radiotap_header()
447 		stbc = (status->enc_flags & RX_ENC_FLAG_STBC_MASK) >> RX_ENC_FLAG_STBC_SHIFT;  in ieee80211_add_rx_radiotap_header()
450 		*pos++ = status->rate_idx;  in ieee80211_add_rx_radiotap_header()
453 	if (status->flag & RX_FLAG_AMPDU_DETAILS) {  in ieee80211_add_rx_radiotap_header()
457 		while ((pos - (u8 *)rthdr) & 3)  in ieee80211_add_rx_radiotap_header()
459 		rthdr->it_present |=  in ieee80211_add_rx_radiotap_header()
461 		put_unaligned_le32(status->ampdu_reference, pos);  in ieee80211_add_rx_radiotap_header()
463 		if (status->flag & RX_FLAG_AMPDU_LAST_KNOWN)  in ieee80211_add_rx_radiotap_header()
465 		if (status->flag & RX_FLAG_AMPDU_IS_LAST)  in ieee80211_add_rx_radiotap_header()
467 		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_ERROR)  in ieee80211_add_rx_radiotap_header()
469 		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN)  in ieee80211_add_rx_radiotap_header()
471 		if (status->flag & RX_FLAG_AMPDU_EOF_BIT_KNOWN)  in ieee80211_add_rx_radiotap_header()
473 		if (status->flag & RX_FLAG_AMPDU_EOF_BIT)  in ieee80211_add_rx_radiotap_header()
477 		if (status->flag & RX_FLAG_AMPDU_DELIM_CRC_KNOWN)  in ieee80211_add_rx_radiotap_header()
478 			*pos++ = status->ampdu_delimiter_crc;  in ieee80211_add_rx_radiotap_header()
484 	if (status->encoding == RX_ENC_VHT) {  in ieee80211_add_rx_radiotap_header()
485 		u16 known = local->hw.radiotap_vht_details;  in ieee80211_add_rx_radiotap_header()
487 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);  in ieee80211_add_rx_radiotap_header()
491 		if (status->enc_flags & RX_ENC_FLAG_SHORT_GI)  in ieee80211_add_rx_radiotap_header()
494 		if (status->enc_flags & RX_ENC_FLAG_STBC_MASK)  in ieee80211_add_rx_radiotap_header()
496 		if (status->enc_flags & RX_ENC_FLAG_BF)  in ieee80211_add_rx_radiotap_header()
500 		switch (status->bw) {  in ieee80211_add_rx_radiotap_header()
514 		*pos = (status->rate_idx << 4) | status->nss;  in ieee80211_add_rx_radiotap_header()
517 		if (status->enc_flags & RX_ENC_FLAG_LDPC)  in ieee80211_add_rx_radiotap_header()
526 	if (local->hw.radiotap_timestamp.units_pos >= 0) {  in ieee80211_add_rx_radiotap_header()
530 		rthdr->it_present |=  in ieee80211_add_rx_radiotap_header()
534 		while ((pos - (u8 *)rthdr) & 7)  in ieee80211_add_rx_radiotap_header()
537 		put_unaligned_le64(status->device_timestamp, pos);  in ieee80211_add_rx_radiotap_header()
540 		if (local->hw.radiotap_timestamp.accuracy >= 0) {  in ieee80211_add_rx_radiotap_header()
541 			accuracy = local->hw.radiotap_timestamp.accuracy;  in ieee80211_add_rx_radiotap_header()
547 		*pos++ = local->hw.radiotap_timestamp.units_pos;  in ieee80211_add_rx_radiotap_header()
551 	if (status->encoding == RX_ENC_HE &&  in ieee80211_add_rx_radiotap_header()
552 	    status->flag & RX_FLAG_RADIOTAP_HE) {  in ieee80211_add_rx_radiotap_header()
555 		if (status->enc_flags & RX_ENC_FLAG_STBC_MASK) {  in ieee80211_add_rx_radiotap_header()
558 						      status->enc_flags));  in ieee80211_add_rx_radiotap_header()
561 			he.data6 |= HE_PREP(DATA6_NSTS, status->nss);  in ieee80211_add_rx_radiotap_header()
572 		he.data3 |= HE_PREP(DATA3_DATA_MCS, status->rate_idx);  in ieee80211_add_rx_radiotap_header()
573 		he.data3 |= HE_PREP(DATA3_DATA_DCM, status->he_dcm);  in ieee80211_add_rx_radiotap_header()
575 				    !!(status->enc_flags & RX_ENC_FLAG_LDPC));  in ieee80211_add_rx_radiotap_header()
577 		he.data5 |= HE_PREP(DATA5_GI, status->he_gi);  in ieee80211_add_rx_radiotap_header()
579 		switch (status->bw) {  in ieee80211_add_rx_radiotap_header()
610 					    status->he_ru + 4);  in ieee80211_add_rx_radiotap_header()
613 			WARN_ONCE(1, "Invalid SU BW %d\n", status->bw);  in ieee80211_add_rx_radiotap_header()
617 		while ((pos - (u8 *)rthdr) & 1)  in ieee80211_add_rx_radiotap_header()
619 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE);  in ieee80211_add_rx_radiotap_header()
624 	if (status->encoding == RX_ENC_HE &&  in ieee80211_add_rx_radiotap_header()
625 	    status->flag & RX_FLAG_RADIOTAP_HE_MU) {  in ieee80211_add_rx_radiotap_header()
627 		while ((pos - (u8 *)rthdr) & 1)  in ieee80211_add_rx_radiotap_header()
629 		rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE_MU);  in ieee80211_add_rx_radiotap_header()
635 		*pos++ = status->chain_signal[chain];  in ieee80211_add_rx_radiotap_header()
639 	if (status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {  in ieee80211_add_rx_radiotap_header()
641 		if ((pos - (u8 *)rthdr) & 1)  in ieee80211_add_rx_radiotap_header()
650 		while ((pos - (u8 *)rthdr) & (rtap.align - 1))  in ieee80211_add_rx_radiotap_header()
668 	needed_headroom = rt_hdrlen - rtap_space;  in ieee80211_make_monitor_skb()
702 	skb->ip_summed = CHECKSUM_UNNECESSARY;  in ieee80211_make_monitor_skb()
703 	skb->pkt_type = PACKET_OTHERHOST;  in ieee80211_make_monitor_skb()
704 	skb->protocol = htons(ETH_P_802_2);  in ieee80211_make_monitor_skb()
711  * returns a cleaned-up SKB that no longer includes the FCS nor the
724 		rcu_dereference(local->monitor_sdata);  in ieee80211_rx_monitor()
727 	if (status->flag & RX_FLAG_RADIOTAP_HE)  in ieee80211_rx_monitor()
730 	if (status->flag & RX_FLAG_RADIOTAP_HE_MU)  in ieee80211_rx_monitor()
733 	if (unlikely(status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA)) {  in ieee80211_rx_monitor()
734 		struct ieee80211_vendor_radiotap *rtap = (void *)origskb->data;  in ieee80211_rx_monitor()
736 		rtap_space += sizeof(*rtap) + rtap->len + rtap->pad;  in ieee80211_rx_monitor()
748 	if (ieee80211_hw_check(&local->hw, RX_INCLUDES_FCS)) {  in ieee80211_rx_monitor()
749 		if (unlikely(origskb->len <= FCS_LEN)) {  in ieee80211_rx_monitor()
758 	/* ensure hdr->frame_control and vendor radiotap data are in skb head */  in ieee80211_rx_monitor()
766 	if (!local->monitors || (status->flag & RX_FLAG_SKIP_MONITOR)) {  in ieee80211_rx_monitor()
778 	list_for_each_entry_rcu(sdata, &local->mon_list, u.mntr.list) {  in ieee80211_rx_monitor()
779 		bool last_monitor = list_is_last(&sdata->u.mntr.list,  in ieee80211_rx_monitor()
780 						 &local->mon_list);  in ieee80211_rx_monitor()
799 				skb->dev = sdata->dev;  in ieee80211_rx_monitor()
800 				ieee80211_rx_stats(skb->dev, skb->len);  in ieee80211_rx_monitor()
822 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_parse_qos()
823 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_parse_qos()
827 	if (ieee80211_is_data_qos(hdr->frame_control)) {  in ieee80211_parse_qos()
832 			status->rx_flags |= IEEE80211_RX_AMSDU;  in ieee80211_parse_qos()
838 		 * IEEE 802.11-2007, 7.1.3.4.1 ("Sequence Number field"):  in ieee80211_parse_qos()
842 		 *	Address 1 field, and all non-QoS data frames sent  in ieee80211_parse_qos()
844 		 *	modulo-4096 counter, [...]  in ieee80211_parse_qos()
846 		 * We also use that counter for non-QoS STAs.  in ieee80211_parse_qos()
850 		if (ieee80211_is_mgmt(hdr->frame_control))  in ieee80211_parse_qos()
855 	rx->seqno_idx = seqno_idx;  in ieee80211_parse_qos()
856 	rx->security_idx = security_idx;  in ieee80211_parse_qos()
857 	/* Set skb->priority to 1d tag if highest order bit of TID is not set.  in ieee80211_parse_qos()
858 	 * For now, set skb->priority to 0 for other cases. */  in ieee80211_parse_qos()
859 	rx->skb->priority = (tid > 7) ? 0 : tid;  in ieee80211_parse_qos()
865  * Drivers always need to pass packets that are aligned to two-byte boundaries
869  * guarantees that the contained IP header is aligned to a four-byte
871  * payload to a four-byte boundary (because either the IP header is directly
877  * With A-MSDU frames, however, the payload data address must yield two modulo
878  * four because there are 14-byte 802.3 headers within the A-MSDU frames that
880  * specs were sane enough this time around to require padding each A-MSDU
890 	WARN_ON_ONCE((unsigned long)rx->skb->data & 1);  in ieee80211_verify_alignment()
899 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_is_unicast_robust_mgmt_frame()
901 	if (is_multicast_ether_addr(hdr->addr1))  in ieee80211_is_unicast_robust_mgmt_frame()
910 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_is_multicast_robust_mgmt_frame()
912 	if (!is_multicast_ether_addr(hdr->addr1))  in ieee80211_is_multicast_robust_mgmt_frame()
919 /* Get the BIP key index from MMIE; return -1 if this is not a BIP frame */
922 	struct ieee80211_mgmt *hdr = (struct ieee80211_mgmt *) skb->data;  in ieee80211_get_mmie_keyidx()
926 	if (skb->len < 24 + sizeof(*mmie) || !is_multicast_ether_addr(hdr->da))  in ieee80211_get_mmie_keyidx()
927 		return -1;  in ieee80211_get_mmie_keyidx()
930 		return -1; /* not a robust management frame */  in ieee80211_get_mmie_keyidx()
933 		(skb->data + skb->len - sizeof(*mmie));  in ieee80211_get_mmie_keyidx()
934 	if (mmie->element_id == WLAN_EID_MMIE &&  in ieee80211_get_mmie_keyidx()
935 	    mmie->length == sizeof(*mmie) - 2)  in ieee80211_get_mmie_keyidx()
936 		return le16_to_cpu(mmie->key_id);  in ieee80211_get_mmie_keyidx()
939 		(skb->data + skb->len - sizeof(*mmie16));  in ieee80211_get_mmie_keyidx()
940 	if (skb->len >= 24 + sizeof(*mmie16) &&  in ieee80211_get_mmie_keyidx()
941 	    mmie16->element_id == WLAN_EID_MMIE &&  in ieee80211_get_mmie_keyidx()
942 	    mmie16->length == sizeof(*mmie16) - 2)  in ieee80211_get_mmie_keyidx()
943 		return le16_to_cpu(mmie16->key_id);  in ieee80211_get_mmie_keyidx()
945 	return -1;  in ieee80211_get_mmie_keyidx()
948 static int ieee80211_get_cs_keyid(const struct ieee80211_cipher_scheme *cs,  in ieee80211_get_cs_keyid()  argument
951 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in ieee80211_get_cs_keyid()
956 	fc = hdr->frame_control;  in ieee80211_get_cs_keyid()
959 	if (skb->len < hdrlen + cs->hdr_len)  in ieee80211_get_cs_keyid()
960 		return -EINVAL;  in ieee80211_get_cs_keyid()
962 	skb_copy_bits(skb, hdrlen + cs->key_idx_off, &keyid, 1);  in ieee80211_get_cs_keyid()
963 	keyid &= cs->key_idx_mask;  in ieee80211_get_cs_keyid()
964 	keyid >>= cs->key_idx_shift;  in ieee80211_get_cs_keyid()
971 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_mesh_check()
972 	char *dev_addr = rx->sdata->vif.addr;  in ieee80211_rx_mesh_check()
974 	if (ieee80211_is_data(hdr->frame_control)) {  in ieee80211_rx_mesh_check()
975 		if (is_multicast_ether_addr(hdr->addr1)) {  in ieee80211_rx_mesh_check()
976 			if (ieee80211_has_tods(hdr->frame_control) ||  in ieee80211_rx_mesh_check()
977 			    !ieee80211_has_fromds(hdr->frame_control))  in ieee80211_rx_mesh_check()
979 			if (ether_addr_equal(hdr->addr3, dev_addr))  in ieee80211_rx_mesh_check()
982 			if (!ieee80211_has_a4(hdr->frame_control))  in ieee80211_rx_mesh_check()
984 			if (ether_addr_equal(hdr->addr4, dev_addr))  in ieee80211_rx_mesh_check()
993 	if (!rx->sta || sta_plink_state(rx->sta) != NL80211_PLINK_ESTAB) {  in ieee80211_rx_mesh_check()
996 		if (!ieee80211_is_mgmt(hdr->frame_control))  in ieee80211_rx_mesh_check()
999 		if (ieee80211_is_action(hdr->frame_control)) {  in ieee80211_rx_mesh_check()
1003 			if (rx->skb->len < IEEE80211_MIN_ACTION_SIZE)  in ieee80211_rx_mesh_check()
1007 			category = mgmt->u.action.category;  in ieee80211_rx_mesh_check()
1014 		if (ieee80211_is_probe_req(hdr->frame_control) ||  in ieee80211_rx_mesh_check()
1015 		    ieee80211_is_probe_resp(hdr->frame_control) ||  in ieee80211_rx_mesh_check()
1016 		    ieee80211_is_beacon(hdr->frame_control) ||  in ieee80211_rx_mesh_check()
1017 		    ieee80211_is_auth(hdr->frame_control))  in ieee80211_rx_mesh_check()
1029 	struct sk_buff_head *frames = &tid_agg_rx->reorder_buf[index];  in ieee80211_rx_reorder_ready()
1033 	if (tid_agg_rx->reorder_buf_filtered & BIT_ULL(index))  in ieee80211_rx_reorder_ready()
1040 	if (status->flag & RX_FLAG_AMSDU_MORE)  in ieee80211_rx_reorder_ready()
1051 	struct sk_buff_head *skb_list = &tid_agg_rx->reorder_buf[index];  in ieee80211_release_reorder_frame()
1055 	lockdep_assert_held(&tid_agg_rx->reorder_lock);  in ieee80211_release_reorder_frame()
1066 	tid_agg_rx->stored_mpdu_num--;  in ieee80211_release_reorder_frame()
1069 		status->rx_flags |= IEEE80211_RX_DEFERRED_RELEASE;  in ieee80211_release_reorder_frame()
1074 	tid_agg_rx->reorder_buf_filtered &= ~BIT_ULL(index);  in ieee80211_release_reorder_frame()
1075 	tid_agg_rx->head_seq_num = ieee80211_sn_inc(tid_agg_rx->head_seq_num);  in ieee80211_release_reorder_frame()
1085 	lockdep_assert_held(&tid_agg_rx->reorder_lock);  in ieee80211_release_reorder_frames()
1087 	while (ieee80211_sn_less(tid_agg_rx->head_seq_num, head_seq_num)) {  in ieee80211_release_reorder_frames()
1088 		index = tid_agg_rx->head_seq_num % tid_agg_rx->buf_size;  in ieee80211_release_reorder_frames()
1101  * Callers must hold tid_agg_rx->reorder_lock.
1111 	lockdep_assert_held(&tid_agg_rx->reorder_lock);  in ieee80211_sta_reorder_release()
1114 	index = tid_agg_rx->head_seq_num % tid_agg_rx->buf_size;  in ieee80211_sta_reorder_release()
1116 	    tid_agg_rx->stored_mpdu_num) {  in ieee80211_sta_reorder_release()
1122 		for (j = (index + 1) % tid_agg_rx->buf_size; j != index;  in ieee80211_sta_reorder_release()
1123 		     j = (j + 1) % tid_agg_rx->buf_size) {  in ieee80211_sta_reorder_release()
1129 			    !time_after(jiffies, tid_agg_rx->reorder_time[j] +  in ieee80211_sta_reorder_release()
1133 			/* don't leave incomplete A-MSDUs around */  in ieee80211_sta_reorder_release()
1134 			for (i = (index + 1) % tid_agg_rx->buf_size; i != j;  in ieee80211_sta_reorder_release()
1135 			     i = (i + 1) % tid_agg_rx->buf_size)  in ieee80211_sta_reorder_release()
1136 				__skb_queue_purge(&tid_agg_rx->reorder_buf[i]);  in ieee80211_sta_reorder_release()
1146 			tid_agg_rx->head_seq_num =  in ieee80211_sta_reorder_release()
1147 				(tid_agg_rx->head_seq_num +  in ieee80211_sta_reorder_release()
1154 		index =	tid_agg_rx->head_seq_num % tid_agg_rx->buf_size;  in ieee80211_sta_reorder_release()
1157 	if (tid_agg_rx->stored_mpdu_num) {  in ieee80211_sta_reorder_release()
1158 		j = index = tid_agg_rx->head_seq_num % tid_agg_rx->buf_size;  in ieee80211_sta_reorder_release()
1160 		for (; j != (index - 1) % tid_agg_rx->buf_size;  in ieee80211_sta_reorder_release()
1161 		     j = (j + 1) % tid_agg_rx->buf_size) {  in ieee80211_sta_reorder_release()
1168 		if (!tid_agg_rx->removed)  in ieee80211_sta_reorder_release()
1169 			mod_timer(&tid_agg_rx->reorder_timer,  in ieee80211_sta_reorder_release()
1170 				  tid_agg_rx->reorder_time[j] + 1 +  in ieee80211_sta_reorder_release()
1173 		del_timer(&tid_agg_rx->reorder_timer);  in ieee80211_sta_reorder_release()
1187 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_sta_manage_reorder_buf()
1189 	u16 sc = le16_to_cpu(hdr->seq_ctrl);  in ieee80211_sta_manage_reorder_buf()
1195 	spin_lock(&tid_agg_rx->reorder_lock);  in ieee80211_sta_manage_reorder_buf()
1201 	if (unlikely(tid_agg_rx->auto_seq)) {  in ieee80211_sta_manage_reorder_buf()
1202 		tid_agg_rx->auto_seq = false;  in ieee80211_sta_manage_reorder_buf()
1203 		tid_agg_rx->ssn = mpdu_seq_num;  in ieee80211_sta_manage_reorder_buf()
1204 		tid_agg_rx->head_seq_num = mpdu_seq_num;  in ieee80211_sta_manage_reorder_buf()
1207 	buf_size = tid_agg_rx->buf_size;  in ieee80211_sta_manage_reorder_buf()
1208 	head_seq_num = tid_agg_rx->head_seq_num;  in ieee80211_sta_manage_reorder_buf()
1214 	if (unlikely(!tid_agg_rx->started)) {  in ieee80211_sta_manage_reorder_buf()
1219 		tid_agg_rx->started = true;  in ieee80211_sta_manage_reorder_buf()
1242 	index = mpdu_seq_num % tid_agg_rx->buf_size;  in ieee80211_sta_manage_reorder_buf()
1256 	if (mpdu_seq_num == tid_agg_rx->head_seq_num &&  in ieee80211_sta_manage_reorder_buf()
1257 	    tid_agg_rx->stored_mpdu_num == 0) {  in ieee80211_sta_manage_reorder_buf()
1258 		if (!(status->flag & RX_FLAG_AMSDU_MORE))  in ieee80211_sta_manage_reorder_buf()
1259 			tid_agg_rx->head_seq_num =  in ieee80211_sta_manage_reorder_buf()
1260 				ieee80211_sn_inc(tid_agg_rx->head_seq_num);  in ieee80211_sta_manage_reorder_buf()
1266 	__skb_queue_tail(&tid_agg_rx->reorder_buf[index], skb);  in ieee80211_sta_manage_reorder_buf()
1267 	if (!(status->flag & RX_FLAG_AMSDU_MORE)) {  in ieee80211_sta_manage_reorder_buf()
1268 		tid_agg_rx->reorder_time[index] = jiffies;  in ieee80211_sta_manage_reorder_buf()
1269 		tid_agg_rx->stored_mpdu_num++;  in ieee80211_sta_manage_reorder_buf()
1274 	spin_unlock(&tid_agg_rx->reorder_lock);  in ieee80211_sta_manage_reorder_buf()
1279  * Reorder MPDUs from A-MPDUs, keeping them on a buffer. Returns
1285 	struct sk_buff *skb = rx->skb;  in ieee80211_rx_reorder_ampdu()
1286 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_reorder_ampdu()
1287 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_rx_reorder_ampdu()
1288 	struct sta_info *sta = rx->sta;  in ieee80211_rx_reorder_ampdu()
1293 	if (!ieee80211_is_data_qos(hdr->frame_control) ||  in ieee80211_rx_reorder_ampdu()
1294 	    is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_reorder_ampdu()
1309 	tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);  in ieee80211_rx_reorder_ampdu()
1312 		    !test_bit(tid, rx->sta->ampdu_mlme.agg_session_valid) &&  in ieee80211_rx_reorder_ampdu()
1313 		    !test_and_set_bit(tid, rx->sta->ampdu_mlme.unexpected_agg))  in ieee80211_rx_reorder_ampdu()
1314 			ieee80211_send_delba(rx->sdata, rx->sta->sta.addr, tid,  in ieee80211_rx_reorder_ampdu()
1321 	if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))  in ieee80211_rx_reorder_ampdu()
1329 	/* new, potentially un-ordered, ampdu frame - process it */  in ieee80211_rx_reorder_ampdu()
1332 	if (tid_agg_rx->timeout)  in ieee80211_rx_reorder_ampdu()
1333 		tid_agg_rx->last_rx = jiffies;  in ieee80211_rx_reorder_ampdu()
1335 	/* if this mpdu is fragmented - terminate rx aggregation session */  in ieee80211_rx_reorder_ampdu()
1336 	sc = le16_to_cpu(hdr->seq_ctrl);  in ieee80211_rx_reorder_ampdu()
1338 		skb_queue_tail(&rx->sdata->skb_queue, skb);  in ieee80211_rx_reorder_ampdu()
1339 		ieee80211_queue_work(&local->hw, &rx->sdata->work);  in ieee80211_rx_reorder_ampdu()
1344 	 * No locking needed -- we will only ever process one  in ieee80211_rx_reorder_ampdu()
1350 	if (ieee80211_sta_manage_reorder_buf(rx->sdata, tid_agg_rx, skb,  in ieee80211_rx_reorder_ampdu()
1361 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_h_check_dup()
1362 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_check_dup()
1364 	if (status->flag & RX_FLAG_DUP_VALIDATED)  in ieee80211_rx_h_check_dup()
1369 	 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")  in ieee80211_rx_h_check_dup()
1372 	if (rx->skb->len < 24)  in ieee80211_rx_h_check_dup()
1375 	if (ieee80211_is_ctl(hdr->frame_control) ||  in ieee80211_rx_h_check_dup()
1376 	    ieee80211_is_any_nullfunc(hdr->frame_control) ||  in ieee80211_rx_h_check_dup()
1377 	    is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_check_dup()
1380 	if (!rx->sta)  in ieee80211_rx_h_check_dup()
1383 	if (unlikely(ieee80211_has_retry(hdr->frame_control) &&  in ieee80211_rx_h_check_dup()
1384 		     rx->sta->last_seq_ctrl[rx->seqno_idx] == hdr->seq_ctrl)) {  in ieee80211_rx_h_check_dup()
1385 		I802_DEBUG_INC(rx->local->dot11FrameDuplicateCount);  in ieee80211_rx_h_check_dup()
1386 		rx->sta->rx_stats.num_duplicates++;  in ieee80211_rx_h_check_dup()
1388 	} else if (!(status->flag & RX_FLAG_AMSDU_MORE)) {  in ieee80211_rx_h_check_dup()
1389 		rx->sta->last_seq_ctrl[rx->seqno_idx] = hdr->seq_ctrl;  in ieee80211_rx_h_check_dup()
1398 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_h_check()
1400 	/* Drop disallowed frame classes based on STA auth/assoc state;  in ieee80211_rx_h_check()
1406 	 * responsible for filtering on both auth and assoc states.  in ieee80211_rx_h_check()
1409 	if (ieee80211_vif_is_mesh(&rx->sdata->vif))  in ieee80211_rx_h_check()
1412 	if (unlikely((ieee80211_is_data(hdr->frame_control) ||  in ieee80211_rx_h_check()
1413 		      ieee80211_is_pspoll(hdr->frame_control)) &&  in ieee80211_rx_h_check()
1414 		     rx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&  in ieee80211_rx_h_check()
1415 		     rx->sdata->vif.type != NL80211_IFTYPE_WDS &&  in ieee80211_rx_h_check()
1416 		     rx->sdata->vif.type != NL80211_IFTYPE_OCB &&  in ieee80211_rx_h_check()
1417 		     (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))) {  in ieee80211_rx_h_check()
1420 		 * yet marked ASSOC to prevent a race where we don't set the  in ieee80211_rx_h_check()
1421 		 * assoc bit quickly enough before it sends the first frame  in ieee80211_rx_h_check()
1423 		if (rx->sta && rx->sdata->vif.type == NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_check()
1424 		    ieee80211_is_data_present(hdr->frame_control)) {  in ieee80211_rx_h_check()
1428 			hdrlen = ieee80211_hdrlen(hdr->frame_control);  in ieee80211_rx_h_check()
1430 			if (rx->skb->len < hdrlen + 8)  in ieee80211_rx_h_check()
1433 			skb_copy_bits(rx->skb, hdrlen + 6, &ethertype, 2);  in ieee80211_rx_h_check()
1434 			if (ethertype == rx->sdata->control_port_protocol)  in ieee80211_rx_h_check()
1438 		if (rx->sdata->vif.type == NL80211_IFTYPE_AP &&  in ieee80211_rx_h_check()
1439 		    cfg80211_rx_spurious_frame(rx->sdata->dev,  in ieee80211_rx_h_check()
1440 					       hdr->addr2,  in ieee80211_rx_h_check()
1458 	local = rx->local;  in ieee80211_rx_h_check_more_data()
1459 	skb = rx->skb;  in ieee80211_rx_h_check_more_data()
1460 	hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_rx_h_check_more_data()
1462 	if (!local->pspolling)  in ieee80211_rx_h_check_more_data()
1465 	if (!ieee80211_has_fromds(hdr->frame_control))  in ieee80211_rx_h_check_more_data()
1469 	if (!ieee80211_is_data(hdr->frame_control))  in ieee80211_rx_h_check_more_data()
1472 	if (!ieee80211_has_moredata(hdr->frame_control)) {  in ieee80211_rx_h_check_more_data()
1474 		local->pspolling = false;  in ieee80211_rx_h_check_more_data()
1479 	ieee80211_send_pspoll(local, rx->sdata);  in ieee80211_rx_h_check_more_data()
1486 	struct ieee80211_sub_if_data *sdata = sta->sdata;  in sta_ps_start()
1487 	struct ieee80211_local *local = sdata->local;  in sta_ps_start()
1491 	if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||  in sta_ps_start()
1492 	    sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)  in sta_ps_start()
1493 		ps = &sdata->bss->ps;  in sta_ps_start()
1497 	atomic_inc(&ps->num_sta_ps);  in sta_ps_start()
1499 	if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))  in sta_ps_start()
1500 		drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta);  in sta_ps_start()
1502 	       sta->sta.addr, sta->sta.aid);  in sta_ps_start()
1506 	if (!sta->sta.txq[0])  in sta_ps_start()
1509 	for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {  in sta_ps_start()
1510 		if (txq_has_queue(sta->sta.txq[tid]))  in sta_ps_start()
1511 			set_bit(tid, &sta->txq_buffered_tids);  in sta_ps_start()
1513 			clear_bit(tid, &sta->txq_buffered_tids);  in sta_ps_start()
1519 	ps_dbg(sta->sdata, "STA %pM aid %d exits power save mode\n",  in sta_ps_end()
1520 	       sta->sta.addr, sta->sta.aid);  in sta_ps_end()
1530 		ps_dbg(sta->sdata, "STA %pM aid %d driver-ps-blocked\n",  in sta_ps_end()
1531 		       sta->sta.addr, sta->sta.aid);  in sta_ps_end()
1545 	WARN_ON(!ieee80211_hw_check(&sta->local->hw, AP_LINK_PS));  in ieee80211_sta_ps_transition()
1550 		return -EINVAL;  in ieee80211_sta_ps_transition()
1581 	 * If this AC is not trigger-enabled do nothing unless the  in ieee80211_sta_uapsd_trigger()
1584 	 * NB: This could/should check a separate bitmap of trigger-  in ieee80211_sta_uapsd_trigger()
1588 	if (!(sta->sta.uapsd_queues & ieee80211_ac_to_qos_mask[ac]) &&  in ieee80211_sta_uapsd_trigger()
1606 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_uapsd_and_pspoll()
1607 	struct ieee80211_hdr *hdr = (void *)rx->skb->data;  in ieee80211_rx_h_uapsd_and_pspoll()
1608 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_uapsd_and_pspoll()
1610 	if (!rx->sta)  in ieee80211_rx_h_uapsd_and_pspoll()
1613 	if (sdata->vif.type != NL80211_IFTYPE_AP &&  in ieee80211_rx_h_uapsd_and_pspoll()
1614 	    sdata->vif.type != NL80211_IFTYPE_AP_VLAN)  in ieee80211_rx_h_uapsd_and_pspoll()
1619 	 * uAPSD and PS-Poll frames (the latter shouldn't even come up from  in ieee80211_rx_h_uapsd_and_pspoll()
1622 	if (ieee80211_hw_check(&sdata->local->hw, AP_LINK_PS))  in ieee80211_rx_h_uapsd_and_pspoll()
1628 	 * in the PS-Poll case the station must be confused ...  in ieee80211_rx_h_uapsd_and_pspoll()
1630 	if (!test_sta_flag(rx->sta, WLAN_STA_PS_STA))  in ieee80211_rx_h_uapsd_and_pspoll()
1633 	if (unlikely(ieee80211_is_pspoll(hdr->frame_control))) {  in ieee80211_rx_h_uapsd_and_pspoll()
1634 		ieee80211_sta_pspoll(&rx->sta->sta);  in ieee80211_rx_h_uapsd_and_pspoll()
1638 		dev_kfree_skb(rx->skb);  in ieee80211_rx_h_uapsd_and_pspoll()
1641 	} else if (!ieee80211_has_morefrags(hdr->frame_control) &&  in ieee80211_rx_h_uapsd_and_pspoll()
1642 		   !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&  in ieee80211_rx_h_uapsd_and_pspoll()
1643 		   ieee80211_has_pm(hdr->frame_control) &&  in ieee80211_rx_h_uapsd_and_pspoll()
1644 		   (ieee80211_is_data_qos(hdr->frame_control) ||  in ieee80211_rx_h_uapsd_and_pspoll()
1645 		    ieee80211_is_qos_nullfunc(hdr->frame_control))) {  in ieee80211_rx_h_uapsd_and_pspoll()
1648 		ieee80211_sta_uapsd_trigger(&rx->sta->sta, tid);  in ieee80211_rx_h_uapsd_and_pspoll()
1657 	struct sta_info *sta = rx->sta;  in ieee80211_rx_h_sta_process()
1658 	struct sk_buff *skb = rx->skb;  in ieee80211_rx_h_sta_process()
1660 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in ieee80211_rx_h_sta_process()
1674 	if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {  in ieee80211_rx_h_sta_process()
1675 		u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,  in ieee80211_rx_h_sta_process()
1677 		if (ether_addr_equal(bssid, rx->sdata->u.ibss.bssid) &&  in ieee80211_rx_h_sta_process()
1679 			sta->rx_stats.last_rx = jiffies;  in ieee80211_rx_h_sta_process()
1680 			if (ieee80211_is_data(hdr->frame_control) &&  in ieee80211_rx_h_sta_process()
1681 			    !is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_sta_process()
1682 				sta->rx_stats.last_rate =  in ieee80211_rx_h_sta_process()
1685 	} else if (rx->sdata->vif.type == NL80211_IFTYPE_OCB) {  in ieee80211_rx_h_sta_process()
1686 		sta->rx_stats.last_rx = jiffies;  in ieee80211_rx_h_sta_process()
1687 	} else if (!is_multicast_ether_addr(hdr->addr1)) {  in ieee80211_rx_h_sta_process()
1692 		sta->rx_stats.last_rx = jiffies;  in ieee80211_rx_h_sta_process()
1693 		if (ieee80211_is_data(hdr->frame_control))  in ieee80211_rx_h_sta_process()
1694 			sta->rx_stats.last_rate = sta_stats_encode_rate(status);  in ieee80211_rx_h_sta_process()
1697 	if (rx->sdata->vif.type == NL80211_IFTYPE_STATION)  in ieee80211_rx_h_sta_process()
1698 		ieee80211_sta_rx_notify(rx->sdata, hdr);  in ieee80211_rx_h_sta_process()
1700 	sta->rx_stats.fragments++;  in ieee80211_rx_h_sta_process()
1702 	u64_stats_update_begin(&rx->sta->rx_stats.syncp);  in ieee80211_rx_h_sta_process()
1703 	sta->rx_stats.bytes += rx->skb->len;  in ieee80211_rx_h_sta_process()
1704 	u64_stats_update_end(&rx->sta->rx_stats.syncp);  in ieee80211_rx_h_sta_process()
1706 	if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {  in ieee80211_rx_h_sta_process()
1707 		sta->rx_stats.last_signal = status->signal;  in ieee80211_rx_h_sta_process()
1708 		ewma_signal_add(&sta->rx_stats_avg.signal, -status->signal);  in ieee80211_rx_h_sta_process()
1711 	if (status->chains) {  in ieee80211_rx_h_sta_process()
1712 		sta->rx_stats.chains = status->chains;  in ieee80211_rx_h_sta_process()
1713 		for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {  in ieee80211_rx_h_sta_process()
1714 			int signal = status->chain_signal[i];  in ieee80211_rx_h_sta_process()
1716 			if (!(status->chains & BIT(i)))  in ieee80211_rx_h_sta_process()
1719 			sta->rx_stats.chain_signal_last[i] = signal;  in ieee80211_rx_h_sta_process()
1720 			ewma_signal_add(&sta->rx_stats_avg.chain_signal[i],  in ieee80211_rx_h_sta_process()
1721 					-signal);  in ieee80211_rx_h_sta_process()
1728 	 * frame as specified in IEEE 802.11-2016 11.2.3.2  in ieee80211_rx_h_sta_process()
1730 	if (!ieee80211_hw_check(&sta->local->hw, AP_LINK_PS) &&  in ieee80211_rx_h_sta_process()
1731 	    !ieee80211_has_morefrags(hdr->frame_control) &&  in ieee80211_rx_h_sta_process()
1732 	    !is_multicast_ether_addr(hdr->addr1) &&  in ieee80211_rx_h_sta_process()
1733 	    (ieee80211_is_mgmt(hdr->frame_control) ||  in ieee80211_rx_h_sta_process()
1734 	     ieee80211_is_data(hdr->frame_control)) &&  in ieee80211_rx_h_sta_process()
1735 	    !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) &&  in ieee80211_rx_h_sta_process()
1736 	    (rx->sdata->vif.type == NL80211_IFTYPE_AP ||  in ieee80211_rx_h_sta_process()
1737 	     rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) {  in ieee80211_rx_h_sta_process()
1739 			if (!ieee80211_has_pm(hdr->frame_control))  in ieee80211_rx_h_sta_process()
1742 			if (ieee80211_has_pm(hdr->frame_control))  in ieee80211_rx_h_sta_process()
1748 	if (ieee80211_vif_is_mesh(&rx->sdata->vif))  in ieee80211_rx_h_sta_process()
1752 	 * Drop (qos-)data::nullfunc frames silently, since they  in ieee80211_rx_h_sta_process()
1755 	if (ieee80211_is_any_nullfunc(hdr->frame_control)) {  in ieee80211_rx_h_sta_process()
1756 		I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);  in ieee80211_rx_h_sta_process()
1759 		 * If we receive a 4-addr nullfunc frame from a STA  in ieee80211_rx_h_sta_process()
1760 		 * that was not moved to a 4-addr STA vlan yet send  in ieee80211_rx_h_sta_process()
1764 		if (ieee80211_has_a4(hdr->frame_control) &&  in ieee80211_rx_h_sta_process()
1765 		    (rx->sdata->vif.type == NL80211_IFTYPE_AP ||  in ieee80211_rx_h_sta_process()
1766 		     (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&  in ieee80211_rx_h_sta_process()
1767 		      !rx->sdata->u.vlan.sta))) {  in ieee80211_rx_h_sta_process()
1770 					rx->sdata->dev, sta->sta.addr,  in ieee80211_rx_h_sta_process()
1778 		sta->rx_stats.packets++;  in ieee80211_rx_h_sta_process()
1779 		dev_kfree_skb(rx->skb);  in ieee80211_rx_h_sta_process()
1789 	struct sk_buff *skb = rx->skb;  in ieee80211_rx_h_decrypt()
1791 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in ieee80211_rx_h_decrypt()
1796 	int mmie_keyidx = -1;  in ieee80211_rx_h_decrypt()
1798 	const struct ieee80211_cipher_scheme *cs = NULL;  in ieee80211_rx_h_decrypt()  local
1804 	 *  - GTK (group keys)  in ieee80211_rx_h_decrypt()
1805 	 *  - IGTK (group keys for management frames)  in ieee80211_rx_h_decrypt()
1806 	 *  - PTK (pairwise keys)  in ieee80211_rx_h_decrypt()
1807 	 *  - STK (station-to-station pairwise keys)  in ieee80211_rx_h_decrypt()
1812 	 * Unless, of course, actual WEP keys ("pre-RSNA") are used, then  in ieee80211_rx_h_decrypt()
1828 	rx->key = NULL;  in ieee80211_rx_h_decrypt()
1829 	fc = hdr->frame_control;  in ieee80211_rx_h_decrypt()
1831 	if (rx->sta) {  in ieee80211_rx_h_decrypt()
1832 		int keyid = rx->sta->ptk_idx;  in ieee80211_rx_h_decrypt()
1834 		if (ieee80211_has_protected(fc) && rx->sta->cipher_scheme) {  in ieee80211_rx_h_decrypt()
1835 			cs = rx->sta->cipher_scheme;  in ieee80211_rx_h_decrypt()
1836 			keyid = ieee80211_get_cs_keyid(cs, rx->skb);  in ieee80211_rx_h_decrypt()
1840 		sta_ptk = rcu_dereference(rx->sta->ptk[keyid]);  in ieee80211_rx_h_decrypt()
1844 		mmie_keyidx = ieee80211_get_mmie_keyidx(rx->skb);  in ieee80211_rx_h_decrypt()
1846 	if (!is_multicast_ether_addr(hdr->addr1) && sta_ptk) {  in ieee80211_rx_h_decrypt()
1847 		rx->key = sta_ptk;  in ieee80211_rx_h_decrypt()
1848 		if ((status->flag & RX_FLAG_DECRYPTED) &&  in ieee80211_rx_h_decrypt()
1849 		    (status->flag & RX_FLAG_IV_STRIPPED))  in ieee80211_rx_h_decrypt()
1856 		if ((status->flag & RX_FLAG_DECRYPTED) &&  in ieee80211_rx_h_decrypt()
1857 		    (status->flag & RX_FLAG_IV_STRIPPED))  in ieee80211_rx_h_decrypt()
1863 		if (rx->sta) {  in ieee80211_rx_h_decrypt()
1865 			    test_sta_flag(rx->sta, WLAN_STA_MFP))  in ieee80211_rx_h_decrypt()
1868 			rx->key = rcu_dereference(rx->sta->gtk[mmie_keyidx]);  in ieee80211_rx_h_decrypt()
1870 		if (!rx->key)  in ieee80211_rx_h_decrypt()
1871 			rx->key = rcu_dereference(rx->sdata->keys[mmie_keyidx]);  in ieee80211_rx_h_decrypt()
1875 		 * need to set rx->key if there is a key that could have been  in ieee80211_rx_h_decrypt()
1880 		struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_decrypt()
1884 		    is_multicast_ether_addr(hdr->addr1) &&  in ieee80211_rx_h_decrypt()
1885 		    (key = rcu_dereference(rx->sdata->default_mgmt_key)))  in ieee80211_rx_h_decrypt()
1886 			rx->key = key;  in ieee80211_rx_h_decrypt()
1888 			if (rx->sta) {  in ieee80211_rx_h_decrypt()
1890 					key = rcu_dereference(rx->sta->gtk[i]);  in ieee80211_rx_h_decrypt()
1897 					key = rcu_dereference(sdata->keys[i]);  in ieee80211_rx_h_decrypt()
1903 				rx->key = key;  in ieee80211_rx_h_decrypt()
1918 		if ((status->flag & RX_FLAG_DECRYPTED) &&  in ieee80211_rx_h_decrypt()
1919 		    (status->flag & RX_FLAG_IV_STRIPPED))  in ieee80211_rx_h_decrypt()
1924 		if (cs) {  in ieee80211_rx_h_decrypt()
1925 			keyidx = ieee80211_get_cs_keyid(cs, rx->skb);  in ieee80211_rx_h_decrypt()
1930 			if (rx->skb->len < 8 + hdrlen)  in ieee80211_rx_h_decrypt()
1936 			skb_copy_bits(rx->skb, hdrlen + 3, &keyid, 1);  in ieee80211_rx_h_decrypt()
1940 		/* check per-station GTK first, if multicast packet */  in ieee80211_rx_h_decrypt()
1941 		if (is_multicast_ether_addr(hdr->addr1) && rx->sta)  in ieee80211_rx_h_decrypt()
1942 			rx->key = rcu_dereference(rx->sta->gtk[keyidx]);  in ieee80211_rx_h_decrypt()
1945 		if (!rx->key) {  in ieee80211_rx_h_decrypt()
1946 			rx->key = rcu_dereference(rx->sdata->keys[keyidx]);  in ieee80211_rx_h_decrypt()
1949 			 * RSNA-protected unicast frames should always be  in ieee80211_rx_h_decrypt()
1950 			 * sent with pairwise or station-to-station keys,  in ieee80211_rx_h_decrypt()
1953 			if (rx->key &&  in ieee80211_rx_h_decrypt()
1954 			    rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP40 &&  in ieee80211_rx_h_decrypt()
1955 			    rx->key->conf.cipher != WLAN_CIPHER_SUITE_WEP104 &&  in ieee80211_rx_h_decrypt()
1956 			    !is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_decrypt()
1957 				rx->key = NULL;  in ieee80211_rx_h_decrypt()
1961 	if (rx->key) {  in ieee80211_rx_h_decrypt()
1962 		if (unlikely(rx->key->flags & KEY_FLAG_TAINTED))  in ieee80211_rx_h_decrypt()
1970 	switch (rx->key->conf.cipher) {  in ieee80211_rx_h_decrypt()
2007 	status->flag |= RX_FLAG_DECRYPTED;  in ieee80211_rx_h_decrypt()
2016 	for (i = 0; i < ARRAY_SIZE(cache->entries); i++)  in ieee80211_init_frag_cache()
2017 		skb_queue_head_init(&cache->entries[i].skb_list);  in ieee80211_init_frag_cache()
2024 	for (i = 0; i < ARRAY_SIZE(cache->entries); i++)  in ieee80211_destroy_frag_cache()
2025 		__skb_queue_purge(&cache->entries[i].skb_list);  in ieee80211_destroy_frag_cache()
2035 	entry = &cache->entries[cache->next++];  in ieee80211_reassemble_add()
2036 	if (cache->next >= IEEE80211_FRAGMENT_MAX)  in ieee80211_reassemble_add()
2037 		cache->next = 0;  in ieee80211_reassemble_add()
2039 	__skb_queue_purge(&entry->skb_list);  in ieee80211_reassemble_add()
2041 	__skb_queue_tail(&entry->skb_list, *skb); /* no need for locking */  in ieee80211_reassemble_add()
2043 	entry->first_frag_time = jiffies;  in ieee80211_reassemble_add()
2044 	entry->seq = seq;  in ieee80211_reassemble_add()
2045 	entry->rx_queue = rx_queue;  in ieee80211_reassemble_add()
2046 	entry->last_frag = frag;  in ieee80211_reassemble_add()
2047 	entry->check_sequential_pn = false;  in ieee80211_reassemble_add()
2048 	entry->extra_len = 0;  in ieee80211_reassemble_add()
2061 	idx = cache->next;  in ieee80211_reassemble_find()
2065 		idx--;  in ieee80211_reassemble_find()
2067 			idx = IEEE80211_FRAGMENT_MAX - 1;  in ieee80211_reassemble_find()
2069 		entry = &cache->entries[idx];  in ieee80211_reassemble_find()
2070 		if (skb_queue_empty(&entry->skb_list) || entry->seq != seq ||  in ieee80211_reassemble_find()
2071 		    entry->rx_queue != rx_queue ||  in ieee80211_reassemble_find()
2072 		    entry->last_frag + 1 != frag)  in ieee80211_reassemble_find()
2075 		f_hdr = (struct ieee80211_hdr *)entry->skb_list.next->data;  in ieee80211_reassemble_find()
2080 		if (((hdr->frame_control ^ f_hdr->frame_control) &  in ieee80211_reassemble_find()
2082 		    !ether_addr_equal(hdr->addr1, f_hdr->addr1) ||  in ieee80211_reassemble_find()
2083 		    !ether_addr_equal(hdr->addr2, f_hdr->addr2))  in ieee80211_reassemble_find()
2086 		if (time_after(jiffies, entry->first_frag_time + 2 * HZ)) {  in ieee80211_reassemble_find()
2087 			__skb_queue_purge(&entry->skb_list);  in ieee80211_reassemble_find()
2098 	return rx->key &&  in requires_sequential_pn()
2099 		(rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP ||  in requires_sequential_pn()
2100 		 rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP_256 ||  in requires_sequential_pn()
2101 		 rx->key->conf.cipher == WLAN_CIPHER_SUITE_GCMP ||  in requires_sequential_pn()
2102 		 rx->key->conf.cipher == WLAN_CIPHER_SUITE_GCMP_256) &&  in requires_sequential_pn()
2109 	struct ieee80211_fragment_cache *cache = &rx->sdata->frags;  in ieee80211_rx_h_defragment()
2116 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_defragment()
2118 	hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_h_defragment()
2119 	fc = hdr->frame_control;  in ieee80211_rx_h_defragment()
2124 	sc = le16_to_cpu(hdr->seq_ctrl);  in ieee80211_rx_h_defragment()
2127 	if (is_multicast_ether_addr(hdr->addr1)) {  in ieee80211_rx_h_defragment()
2128 		I802_DEBUG_INC(rx->local->dot11MulticastReceivedFrameCount);  in ieee80211_rx_h_defragment()
2132 	if (rx->sta)  in ieee80211_rx_h_defragment()
2133 		cache = &rx->sta->frags;  in ieee80211_rx_h_defragment()
2138 	I802_DEBUG_INC(rx->local->rx_handlers_fragments);  in ieee80211_rx_h_defragment()
2140 	if (skb_linearize(rx->skb))  in ieee80211_rx_h_defragment()
2144 	 *  skb_linearize() might change the skb->data and  in ieee80211_rx_h_defragment()
2148 	hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_h_defragment()
2154 						 rx->seqno_idx, &(rx->skb));  in ieee80211_rx_h_defragment()
2156 			int queue = rx->security_idx;  in ieee80211_rx_h_defragment()
2161 			entry->check_sequential_pn = true;  in ieee80211_rx_h_defragment()
2162 			entry->is_protected = true;  in ieee80211_rx_h_defragment()
2163 			entry->key_color = rx->key->color;  in ieee80211_rx_h_defragment()
2164 			memcpy(entry->last_pn,  in ieee80211_rx_h_defragment()
2165 			       rx->key->u.ccmp.rx_pn[queue],  in ieee80211_rx_h_defragment()
2171 			BUILD_BUG_ON(sizeof(rx->key->u.ccmp.rx_pn[queue]) !=  in ieee80211_rx_h_defragment()
2172 				     sizeof(rx->key->u.gcmp.rx_pn[queue]));  in ieee80211_rx_h_defragment()
2175 		} else if (rx->key &&  in ieee80211_rx_h_defragment()
2177 			    (status->flag & RX_FLAG_DECRYPTED))) {  in ieee80211_rx_h_defragment()
2178 			entry->is_protected = true;  in ieee80211_rx_h_defragment()
2179 			entry->key_color = rx->key->color;  in ieee80211_rx_h_defragment()
2188 					  rx->seqno_idx, hdr);  in ieee80211_rx_h_defragment()
2190 		I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);  in ieee80211_rx_h_defragment()
2196 	 * see IEEE P802.11-REVmc/D5.0, 12.5.3.4.4, item d (for CCMP)  in ieee80211_rx_h_defragment()
2197 	 * and IEEE P802.11-REVmc/D5.0, 12.5.5.4.4, item d (for GCMP)  in ieee80211_rx_h_defragment()
2199 	if (entry->check_sequential_pn) {  in ieee80211_rx_h_defragment()
2208 		if (entry->key_color != rx->key->color)  in ieee80211_rx_h_defragment()
2211 		memcpy(pn, entry->last_pn, IEEE80211_CCMP_PN_LEN);  in ieee80211_rx_h_defragment()
2212 		for (i = IEEE80211_CCMP_PN_LEN - 1; i >= 0; i--) {  in ieee80211_rx_h_defragment()
2217 		queue = rx->security_idx;  in ieee80211_rx_h_defragment()
2218 		rpn = rx->key->u.ccmp.rx_pn[queue];  in ieee80211_rx_h_defragment()
2221 		memcpy(entry->last_pn, pn, IEEE80211_CCMP_PN_LEN);  in ieee80211_rx_h_defragment()
2222 	} else if (entry->is_protected &&  in ieee80211_rx_h_defragment()
2223 		   (!rx->key ||  in ieee80211_rx_h_defragment()
2225 		     !(status->flag & RX_FLAG_DECRYPTED)) ||  in ieee80211_rx_h_defragment()
2226 		    rx->key->color != entry->key_color)) {  in ieee80211_rx_h_defragment()
2232 	} else if (entry->is_protected && rx->key &&  in ieee80211_rx_h_defragment()
2233 		   entry->key_color != rx->key->color &&  in ieee80211_rx_h_defragment()
2234 		   (status->flag & RX_FLAG_DECRYPTED)) {  in ieee80211_rx_h_defragment()
2238 	skb_pull(rx->skb, ieee80211_hdrlen(fc));  in ieee80211_rx_h_defragment()
2239 	__skb_queue_tail(&entry->skb_list, rx->skb);  in ieee80211_rx_h_defragment()
2240 	entry->last_frag = frag;  in ieee80211_rx_h_defragment()
2241 	entry->extra_len += rx->skb->len;  in ieee80211_rx_h_defragment()
2243 		rx->skb = NULL;  in ieee80211_rx_h_defragment()
2247 	rx->skb = __skb_dequeue(&entry->skb_list);  in ieee80211_rx_h_defragment()
2248 	if (skb_tailroom(rx->skb) < entry->extra_len) {  in ieee80211_rx_h_defragment()
2249 		I802_DEBUG_INC(rx->local->rx_expand_skb_head_defrag);  in ieee80211_rx_h_defragment()
2250 		if (unlikely(pskb_expand_head(rx->skb, 0, entry->extra_len,  in ieee80211_rx_h_defragment()
2252 			I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);  in ieee80211_rx_h_defragment()
2253 			__skb_queue_purge(&entry->skb_list);  in ieee80211_rx_h_defragment()
2257 	while ((skb = __skb_dequeue(&entry->skb_list))) {  in ieee80211_rx_h_defragment()
2258 		skb_put_data(rx->skb, skb->data, skb->len);  in ieee80211_rx_h_defragment()
2263 	ieee80211_led_rx(rx->local);  in ieee80211_rx_h_defragment()
2265 	if (rx->sta)  in ieee80211_rx_h_defragment()
2266 		rx->sta->rx_stats.packets++;  in ieee80211_rx_h_defragment()
2272 	if (unlikely(!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_AUTHORIZED)))  in ieee80211_802_1x_port_control()
2273 		return -EACCES;  in ieee80211_802_1x_port_control()
2280 	struct ieee80211_hdr *hdr = (void *)rx->skb->data;  in ieee80211_drop_unencrypted()
2281 	struct sk_buff *skb = rx->skb;  in ieee80211_drop_unencrypted()
2288 	if (status->flag & RX_FLAG_DECRYPTED)  in ieee80211_drop_unencrypted()
2292 	if (unlikely(rx->sta && ieee80211_vif_is_mesh(&rx->sdata->vif) &&  in ieee80211_drop_unencrypted()
2299 		if (!ether_addr_equal(hdr->addr1, rx->sdata->vif.addr))  in ieee80211_drop_unencrypted()
2303 		if (!pskb_may_pull(rx->skb, hdr_len + 6))  in ieee80211_drop_unencrypted()
2306 		mesh_hdr = (struct ieee80211s_hdr *)(skb->data + hdr_len);  in ieee80211_drop_unencrypted()
2310 		if (skb_copy_bits(rx->skb, ethertype_offset, &ethertype, 2) == 0 &&  in ieee80211_drop_unencrypted()
2311 		    ethertype == rx->sdata->control_port_protocol)  in ieee80211_drop_unencrypted()
2319 		     ieee80211_is_data(fc) && rx->key))  in ieee80211_drop_unencrypted()
2320 		return -EACCES;  in ieee80211_drop_unencrypted()
2327 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_drop_unencrypted_mgmt()
2328 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_drop_unencrypted_mgmt()
2329 	__le16 fc = hdr->frame_control;  in ieee80211_drop_unencrypted_mgmt()
2335 	if (status->flag & RX_FLAG_DECRYPTED)  in ieee80211_drop_unencrypted_mgmt()
2338 	if (rx->sta && test_sta_flag(rx->sta, WLAN_STA_MFP)) {  in ieee80211_drop_unencrypted_mgmt()
2340 			     ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&  in ieee80211_drop_unencrypted_mgmt()
2341 			     rx->key)) {  in ieee80211_drop_unencrypted_mgmt()
2344 				cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,  in ieee80211_drop_unencrypted_mgmt()
2345 							     rx->skb->data,  in ieee80211_drop_unencrypted_mgmt()
2346 							     rx->skb->len);  in ieee80211_drop_unencrypted_mgmt()
2347 			return -EACCES;  in ieee80211_drop_unencrypted_mgmt()
2350 		if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) &&  in ieee80211_drop_unencrypted_mgmt()
2351 			     ieee80211_get_mmie_keyidx(rx->skb) < 0)) {  in ieee80211_drop_unencrypted_mgmt()
2354 				cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev,  in ieee80211_drop_unencrypted_mgmt()
2355 							     rx->skb->data,  in ieee80211_drop_unencrypted_mgmt()
2356 							     rx->skb->len);  in ieee80211_drop_unencrypted_mgmt()
2357 			return -EACCES;  in ieee80211_drop_unencrypted_mgmt()
2363 		if (unlikely(ieee80211_is_action(fc) && !rx->key &&  in ieee80211_drop_unencrypted_mgmt()
2364 			     ieee80211_is_robust_mgmt_frame(rx->skb)))  in ieee80211_drop_unencrypted_mgmt()
2365 			return -EACCES;  in ieee80211_drop_unencrypted_mgmt()
2374 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in __ieee80211_data_to_8023()
2375 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in __ieee80211_data_to_8023()
2381 	if (ieee80211_has_a4(hdr->frame_control) &&  in __ieee80211_data_to_8023()
2382 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)  in __ieee80211_data_to_8023()
2383 		return -1;  in __ieee80211_data_to_8023()
2385 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&  in __ieee80211_data_to_8023()
2386 	    !!sdata->u.mgd.use_4addr != !!ieee80211_has_a4(hdr->frame_control)) {  in __ieee80211_data_to_8023()
2388 		if (!sdata->u.mgd.use_4addr)  in __ieee80211_data_to_8023()
2389 			return -1;  in __ieee80211_data_to_8023()
2394 	if (is_multicast_ether_addr(hdr->addr1) &&  in __ieee80211_data_to_8023()
2395 	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN && sdata->u.vlan.sta)  in __ieee80211_data_to_8023()
2396 		return -1;  in __ieee80211_data_to_8023()
2398 	ret = ieee80211_data_to_8023(rx->skb, sdata->vif.addr, sdata->vif.type);  in __ieee80211_data_to_8023()
2402 	ehdr = (struct ethhdr *) rx->skb->data;  in __ieee80211_data_to_8023()
2403 	if (ehdr->h_proto == rx->sdata->control_port_protocol)  in __ieee80211_data_to_8023()
2406 		return -1;  in __ieee80211_data_to_8023()
2412  * requires that rx->skb is a frame with ethernet header
2418 	struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;  in ieee80211_frame_allowed()
2424 	if (ehdr->h_proto == rx->sdata->control_port_protocol &&  in ieee80211_frame_allowed()
2425 	    (ether_addr_equal(ehdr->h_dest, rx->sdata->vif.addr) ||  in ieee80211_frame_allowed()
2426 	     ether_addr_equal(ehdr->h_dest, pae_group_addr)))  in ieee80211_frame_allowed()
2439 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_deliver_skb_to_local_stack()
2440 	struct net_device *dev = sdata->dev;  in ieee80211_deliver_skb_to_local_stack()  local
2442 	if (unlikely((skb->protocol == sdata->control_port_protocol ||  in ieee80211_deliver_skb_to_local_stack()
2443 		      skb->protocol == cpu_to_be16(ETH_P_PREAUTH)) &&  in ieee80211_deliver_skb_to_local_stack()
2444 		     sdata->control_port_over_nl80211)) {  in ieee80211_deliver_skb_to_local_stack()
2446 		bool noencrypt = !(status->flag & RX_FLAG_DECRYPTED);  in ieee80211_deliver_skb_to_local_stack()
2448 		cfg80211_rx_control_port(dev, skb, noencrypt);  in ieee80211_deliver_skb_to_local_stack()
2451 		memset(skb->cb, 0, sizeof(skb->cb));  in ieee80211_deliver_skb_to_local_stack()
2454 		if (rx->napi)  in ieee80211_deliver_skb_to_local_stack()
2455 			napi_gro_receive(rx->napi, skb);  in ieee80211_deliver_skb_to_local_stack()
2462  * requires that rx->skb is a frame with ethernet header
2467 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_deliver_skb()
2468 	struct net_device *dev = sdata->dev;  in ieee80211_deliver_skb()  local
2470 	struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;  in ieee80211_deliver_skb()
2473 	skb = rx->skb;  in ieee80211_deliver_skb()
2476 	ieee80211_rx_stats(dev, skb->len);  in ieee80211_deliver_skb()
2478 	if (rx->sta) {  in ieee80211_deliver_skb()
2481 		 * for non-QoS-data frames. Here we know it's a data  in ieee80211_deliver_skb()
2484 		u64_stats_update_begin(&rx->sta->rx_stats.syncp);  in ieee80211_deliver_skb()
2485 		rx->sta->rx_stats.msdu[rx->seqno_idx]++;  in ieee80211_deliver_skb()
2486 		u64_stats_update_end(&rx->sta->rx_stats.syncp);  in ieee80211_deliver_skb()
2489 	if ((sdata->vif.type == NL80211_IFTYPE_AP ||  in ieee80211_deliver_skb()
2490 	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&  in ieee80211_deliver_skb()
2491 	    !(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&  in ieee80211_deliver_skb()
2492 	    (sdata->vif.type != NL80211_IFTYPE_AP_VLAN || !sdata->u.vlan.sta)) {  in ieee80211_deliver_skb()
2493 		if (is_multicast_ether_addr(ehdr->h_dest) &&  in ieee80211_deliver_skb()
2502 						    dev->name);  in ieee80211_deliver_skb()
2503 		} else if (!is_multicast_ether_addr(ehdr->h_dest)) {  in ieee80211_deliver_skb()
2504 			dsta = sta_info_get(sdata, skb->data);  in ieee80211_deliver_skb()
2521 		 * frames are required to be aligned to 2-byte boundaries  in ieee80211_deliver_skb()
2524 		 * access fields as 2-byte aligned (e.g. for ether_addr_equal)  in ieee80211_deliver_skb()
2528 		align = (unsigned long)(skb->data + sizeof(struct ethhdr)) & 3;  in ieee80211_deliver_skb()
2534 				u8 *data = skb->data;  in ieee80211_deliver_skb()
2536 				skb->data -= align;  in ieee80211_deliver_skb()
2537 				memmove(skb->data, data, len);  in ieee80211_deliver_skb()
2545 		skb->protocol = eth_type_trans(skb, dev);  in ieee80211_deliver_skb()
2555 		xmit_skb->priority += 256;  in ieee80211_deliver_skb()
2556 		xmit_skb->protocol = htons(ETH_P_802_3);  in ieee80211_deliver_skb()
2566 	struct net_device *dev = rx->sdata->dev;  in __ieee80211_rx_h_amsdu()  local
2567 	struct sk_buff *skb = rx->skb;  in __ieee80211_rx_h_amsdu()
2568 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in __ieee80211_rx_h_amsdu()
2569 	__le16 fc = hdr->frame_control;  in __ieee80211_rx_h_amsdu()
2574 	if (unlikely(ieee80211_has_a4(hdr->frame_control))) {  in __ieee80211_rx_h_amsdu()
2577 	} else switch (rx->sdata->vif.type) {  in __ieee80211_rx_h_amsdu()
2583 			if (!rx->sta ||  in __ieee80211_rx_h_amsdu()
2584 			    !test_sta_flag(rx->sta, WLAN_STA_TDLS_PEER))  in __ieee80211_rx_h_amsdu()
2594 	skb->dev = dev;  in __ieee80211_rx_h_amsdu()
2598 					  rx->sdata->vif.addr,  in __ieee80211_rx_h_amsdu()
2599 					  rx->sdata->vif.type,  in __ieee80211_rx_h_amsdu()
2603 	ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr,  in __ieee80211_rx_h_amsdu()
2604 				 rx->sdata->vif.type,  in __ieee80211_rx_h_amsdu()
2605 				 rx->local->hw.extra_tx_headroom,  in __ieee80211_rx_h_amsdu()
2609 		rx->skb = __skb_dequeue(&frame_list);  in __ieee80211_rx_h_amsdu()
2612 			dev_kfree_skb(rx->skb);  in __ieee80211_rx_h_amsdu()
2625 	struct sk_buff *skb = rx->skb;  in ieee80211_rx_h_amsdu()
2627 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in ieee80211_rx_h_amsdu()
2628 	__le16 fc = hdr->frame_control;  in ieee80211_rx_h_amsdu()
2630 	if (!(status->rx_flags & IEEE80211_RX_AMSDU))  in ieee80211_rx_h_amsdu()
2639 	if (unlikely(ieee80211_has_a4(hdr->frame_control))) {  in ieee80211_rx_h_amsdu()
2640 		switch (rx->sdata->vif.type) {  in ieee80211_rx_h_amsdu()
2642 			if (!rx->sdata->u.vlan.sta)  in ieee80211_rx_h_amsdu()
2646 			if (!rx->sdata->u.mgd.use_4addr)  in ieee80211_rx_h_amsdu()
2654 	if (is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_amsdu()
2657 	if (rx->key) {  in ieee80211_rx_h_amsdu()
2659 		 * We should not receive A-MSDUs on pre-HT connections,  in ieee80211_rx_h_amsdu()
2662 		 * A-MSDUs or such.  in ieee80211_rx_h_amsdu()
2664 		switch (rx->key->conf.cipher) {  in ieee80211_rx_h_amsdu()
2684 	struct sk_buff *skb = rx->skb, *fwd_skb;  in ieee80211_rx_h_mesh_fwding()
2685 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_h_mesh_fwding()
2686 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_mesh_fwding()
2687 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;  in ieee80211_rx_h_mesh_fwding()
2691 	hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_rx_h_mesh_fwding()
2692 	hdrlen = ieee80211_hdrlen(hdr->frame_control);  in ieee80211_rx_h_mesh_fwding()
2695 	if (!pskb_may_pull(rx->skb, hdrlen + 6))  in ieee80211_rx_h_mesh_fwding()
2698 	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);  in ieee80211_rx_h_mesh_fwding()
2701 	if (!pskb_may_pull(rx->skb,  in ieee80211_rx_h_mesh_fwding()
2706 	hdr = (struct ieee80211_hdr *) skb->data;  in ieee80211_rx_h_mesh_fwding()
2707 	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);  in ieee80211_rx_h_mesh_fwding()
2709 	if (ieee80211_drop_unencrypted(rx, hdr->frame_control))  in ieee80211_rx_h_mesh_fwding()
2713 	if (ieee80211_is_data(hdr->frame_control) &&  in ieee80211_rx_h_mesh_fwding()
2714 	    is_multicast_ether_addr(hdr->addr1) &&  in ieee80211_rx_h_mesh_fwding()
2715 	    mesh_rmc_check(rx->sdata, hdr->addr3, mesh_hdr))  in ieee80211_rx_h_mesh_fwding()
2718 	if (!ieee80211_is_data(hdr->frame_control))  in ieee80211_rx_h_mesh_fwding()
2721 	if (!mesh_hdr->ttl)  in ieee80211_rx_h_mesh_fwding()
2724 	if (mesh_hdr->flags & MESH_FLAGS_AE) {  in ieee80211_rx_h_mesh_fwding()
2729 		if (is_multicast_ether_addr(hdr->addr1)) {  in ieee80211_rx_h_mesh_fwding()
2730 			mpp_addr = hdr->addr3;  in ieee80211_rx_h_mesh_fwding()
2731 			proxied_addr = mesh_hdr->eaddr1;  in ieee80211_rx_h_mesh_fwding()
2732 		} else if ((mesh_hdr->flags & MESH_FLAGS_AE) ==  in ieee80211_rx_h_mesh_fwding()
2735 			mpp_addr = hdr->addr4;  in ieee80211_rx_h_mesh_fwding()
2736 			proxied_addr = mesh_hdr->eaddr2;  in ieee80211_rx_h_mesh_fwding()
2746 			spin_lock_bh(&mppath->state_lock);  in ieee80211_rx_h_mesh_fwding()
2747 			if (!ether_addr_equal(mppath->mpp, mpp_addr))  in ieee80211_rx_h_mesh_fwding()
2748 				memcpy(mppath->mpp, mpp_addr, ETH_ALEN);  in ieee80211_rx_h_mesh_fwding()
2749 			mppath->exp_time = jiffies;  in ieee80211_rx_h_mesh_fwding()
2750 			spin_unlock_bh(&mppath->state_lock);  in ieee80211_rx_h_mesh_fwding()
2756 	if (!is_multicast_ether_addr(hdr->addr1) &&  in ieee80211_rx_h_mesh_fwding()
2757 	    ether_addr_equal(sdata->vif.addr, hdr->addr3))  in ieee80211_rx_h_mesh_fwding()
2761 	q = sdata->vif.hw_queue[ac];  in ieee80211_rx_h_mesh_fwding()
2762 	if (ieee80211_queue_stopped(&local->hw, q)) {  in ieee80211_rx_h_mesh_fwding()
2768 	if (!--mesh_hdr->ttl) {  in ieee80211_rx_h_mesh_fwding()
2769 		if (!is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_mesh_fwding()
2775 	if (!ifmsh->mshcfg.dot11MeshForwarding)  in ieee80211_rx_h_mesh_fwding()
2778 	if (sdata->crypto_tx_tailroom_needed_cnt)  in ieee80211_rx_h_mesh_fwding()
2781 	fwd_skb = skb_copy_expand(skb, local->tx_headroom +  in ieee80211_rx_h_mesh_fwding()
2782 				       sdata->encrypt_headroom,  in ieee80211_rx_h_mesh_fwding()
2787 	fwd_hdr =  (struct ieee80211_hdr *) fwd_skb->data;  in ieee80211_rx_h_mesh_fwding()
2788 	fwd_hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_RETRY);  in ieee80211_rx_h_mesh_fwding()
2791 	info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;  in ieee80211_rx_h_mesh_fwding()
2792 	info->control.vif = &rx->sdata->vif;  in ieee80211_rx_h_mesh_fwding()
2793 	info->control.jiffies = jiffies;  in ieee80211_rx_h_mesh_fwding()
2794 	if (is_multicast_ether_addr(fwd_hdr->addr1)) {  in ieee80211_rx_h_mesh_fwding()
2796 		memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN);  in ieee80211_rx_h_mesh_fwding()
2804 		mesh_path_error_tx(sdata, ifmsh->mshcfg.element_ttl,  in ieee80211_rx_h_mesh_fwding()
2805 				   fwd_hdr->addr3, 0,  in ieee80211_rx_h_mesh_fwding()
2807 				   fwd_hdr->addr2);  in ieee80211_rx_h_mesh_fwding()
2816 	if (is_multicast_ether_addr(hdr->addr1))  in ieee80211_rx_h_mesh_fwding()
2825 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_data()
2826 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_h_data()
2827 	struct net_device *dev = sdata->dev;  in ieee80211_rx_h_data()  local
2828 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;  in ieee80211_rx_h_data()
2829 	__le16 fc = hdr->frame_control;  in ieee80211_rx_h_data()
2833 	if (unlikely(!ieee80211_is_data(hdr->frame_control)))  in ieee80211_rx_h_data()
2836 	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))  in ieee80211_rx_h_data()
2840 	 * Send unexpected-4addr-frame event to hostapd. For older versions,  in ieee80211_rx_h_data()
2843 	if (ieee80211_has_a4(hdr->frame_control) &&  in ieee80211_rx_h_data()
2844 	    sdata->vif.type == NL80211_IFTYPE_AP) {  in ieee80211_rx_h_data()
2845 		if (rx->sta &&  in ieee80211_rx_h_data()
2846 		    !test_and_set_sta_flag(rx->sta, WLAN_STA_4ADDR_EVENT))  in ieee80211_rx_h_data()
2848 				rx->sdata->dev, rx->sta->sta.addr, GFP_ATOMIC);  in ieee80211_rx_h_data()
2860 	if (unlikely(((struct ethhdr *)rx->skb->data)->h_proto ==  in ieee80211_rx_h_data()
2862 		struct ieee80211_tdls_data *tf = (void *)rx->skb->data;  in ieee80211_rx_h_data()
2864 		if (pskb_may_pull(rx->skb,  in ieee80211_rx_h_data()
2866 		    tf->payload_type == WLAN_TDLS_SNAP_RFTYPE &&  in ieee80211_rx_h_data()
2867 		    tf->category == WLAN_CATEGORY_TDLS &&  in ieee80211_rx_h_data()
2868 		    (tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_REQUEST ||  in ieee80211_rx_h_data()
2869 		     tf->action_code == WLAN_TDLS_CHANNEL_SWITCH_RESPONSE)) {  in ieee80211_rx_h_data()
2870 			skb_queue_tail(&local->skb_queue_tdls_chsw, rx->skb);  in ieee80211_rx_h_data()
2871 			schedule_work(&local->tdls_chsw_work);  in ieee80211_rx_h_data()
2872 			if (rx->sta)  in ieee80211_rx_h_data()
2873 				rx->sta->rx_stats.packets++;  in ieee80211_rx_h_data()
2879 	if (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&  in ieee80211_rx_h_data()
2880 	    unlikely(port_control) && sdata->bss) {  in ieee80211_rx_h_data()
2881 		sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,  in ieee80211_rx_h_data()
2883 		dev = sdata->dev;  in ieee80211_rx_h_data()
2884 		rx->sdata = sdata;  in ieee80211_rx_h_data()
2887 	rx->skb->dev = dev;  in ieee80211_rx_h_data()
2889 	if (!ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS) &&  in ieee80211_rx_h_data()
2890 	    local->ps_sdata && local->hw.conf.dynamic_ps_timeout > 0 &&  in ieee80211_rx_h_data()
2892 		    ((struct ethhdr *)rx->skb->data)->h_dest) &&  in ieee80211_rx_h_data()
2893 	    (!local->scanning &&  in ieee80211_rx_h_data()
2894 	     !test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)))  in ieee80211_rx_h_data()
2895 		mod_timer(&local->dynamic_ps_timer, jiffies +  in ieee80211_rx_h_data()
2896 			  msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));  in ieee80211_rx_h_data()
2906 	struct sk_buff *skb = rx->skb;  in ieee80211_rx_h_ctrl()
2907 	struct ieee80211_bar *bar = (struct ieee80211_bar *)skb->data;  in ieee80211_rx_h_ctrl()
2912 	if (likely(!ieee80211_is_ctl(bar->frame_control)))  in ieee80211_rx_h_ctrl()
2915 	if (ieee80211_is_back_req(bar->frame_control)) {  in ieee80211_rx_h_ctrl()
2923 		if (!rx->sta)  in ieee80211_rx_h_ctrl()
2932 		if (!test_bit(tid, rx->sta->ampdu_mlme.agg_session_valid) &&  in ieee80211_rx_h_ctrl()
2933 		    !test_and_set_bit(tid, rx->sta->ampdu_mlme.unexpected_agg))  in ieee80211_rx_h_ctrl()
2934 			ieee80211_send_delba(rx->sdata, rx->sta->sta.addr, tid,  in ieee80211_rx_h_ctrl()
2938 		tid_agg_rx = rcu_dereference(rx->sta->ampdu_mlme.tid_rx[tid]);  in ieee80211_rx_h_ctrl()
2945 		event.u.ba.sta = &rx->sta->sta;  in ieee80211_rx_h_ctrl()
2948 		if (tid_agg_rx->timeout)  in ieee80211_rx_h_ctrl()
2949 			mod_timer(&tid_agg_rx->session_timer,  in ieee80211_rx_h_ctrl()
2950 				  TU_TO_EXP_TIME(tid_agg_rx->timeout));  in ieee80211_rx_h_ctrl()
2952 		spin_lock(&tid_agg_rx->reorder_lock);  in ieee80211_rx_h_ctrl()
2954 		ieee80211_release_reorder_frames(rx->sdata, tid_agg_rx,  in ieee80211_rx_h_ctrl()
2956 		spin_unlock(&tid_agg_rx->reorder_lock);  in ieee80211_rx_h_ctrl()
2958 		drv_event_callback(rx->local, rx->sdata, &event);  in ieee80211_rx_h_ctrl()
2976 	struct ieee80211_local *local = sdata->local;  in ieee80211_process_sa_query_req()
2980 	if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) {  in ieee80211_process_sa_query_req()
2985 	if (!ether_addr_equal(mgmt->sa, sdata->u.mgd.bssid) ||  in ieee80211_process_sa_query_req()
2986 	    !ether_addr_equal(mgmt->bssid, sdata->u.mgd.bssid)) {  in ieee80211_process_sa_query_req()
2991 	if (len < 24 + 1 + sizeof(resp->u.action.u.sa_query)) {  in ieee80211_process_sa_query_req()
2996 	skb = dev_alloc_skb(sizeof(*resp) + local->hw.extra_tx_headroom);  in ieee80211_process_sa_query_req()
3000 	skb_reserve(skb, local->hw.extra_tx_headroom);  in ieee80211_process_sa_query_req()
3002 	memcpy(resp->da, mgmt->sa, ETH_ALEN);  in ieee80211_process_sa_query_req()
3003 	memcpy(resp->sa, sdata->vif.addr, ETH_ALEN);  in ieee80211_process_sa_query_req()
3004 	memcpy(resp->bssid, sdata->u.mgd.bssid, ETH_ALEN);  in ieee80211_process_sa_query_req()
3005 	resp->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |  in ieee80211_process_sa_query_req()
3007 	skb_put(skb, 1 + sizeof(resp->u.action.u.sa_query));  in ieee80211_process_sa_query_req()
3008 	resp->u.action.category = WLAN_CATEGORY_SA_QUERY;  in ieee80211_process_sa_query_req()
3009 	resp->u.action.u.sa_query.action = WLAN_ACTION_SA_QUERY_RESPONSE;  in ieee80211_process_sa_query_req()
3010 	memcpy(resp->u.action.u.sa_query.trans_id,  in ieee80211_process_sa_query_req()
3011 	       mgmt->u.action.u.sa_query.trans_id,  in ieee80211_process_sa_query_req()
3020 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;  in ieee80211_rx_h_mgmt_check()
3021 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_mgmt_check()
3028 	if (rx->skb->len < 24)  in ieee80211_rx_h_mgmt_check()
3031 	if (!ieee80211_is_mgmt(mgmt->frame_control))  in ieee80211_rx_h_mgmt_check()
3034 	if (rx->sdata->vif.type == NL80211_IFTYPE_AP &&  in ieee80211_rx_h_mgmt_check()
3035 	    ieee80211_is_beacon(mgmt->frame_control) &&  in ieee80211_rx_h_mgmt_check()
3036 	    !(rx->flags & IEEE80211_RX_BEACON_REPORTED)) {  in ieee80211_rx_h_mgmt_check()
3039 		if (ieee80211_hw_check(&rx->local->hw, SIGNAL_DBM) &&  in ieee80211_rx_h_mgmt_check()
3040 		    !(status->flag & RX_FLAG_NO_SIGNAL_VAL))  in ieee80211_rx_h_mgmt_check()
3041 			sig = status->signal;  in ieee80211_rx_h_mgmt_check()
3043 		cfg80211_report_obss_beacon(rx->local->hw.wiphy,  in ieee80211_rx_h_mgmt_check()
3044 					    rx->skb->data, rx->skb->len,  in ieee80211_rx_h_mgmt_check()
3045 					    status->freq, sig);  in ieee80211_rx_h_mgmt_check()
3046 		rx->flags |= IEEE80211_RX_BEACON_REPORTED;  in ieee80211_rx_h_mgmt_check()
3058 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_h_action()
3059 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_action()
3060 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;  in ieee80211_rx_h_action()
3061 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_action()
3062 	int len = rx->skb->len;  in ieee80211_rx_h_action()
3064 	if (!ieee80211_is_action(mgmt->frame_control))  in ieee80211_rx_h_action()
3071 	if (!rx->sta && mgmt->u.action.category != WLAN_CATEGORY_PUBLIC &&  in ieee80211_rx_h_action()
3072 	    mgmt->u.action.category != WLAN_CATEGORY_SELF_PROTECTED &&  in ieee80211_rx_h_action()
3073 	    mgmt->u.action.category != WLAN_CATEGORY_SPECTRUM_MGMT)  in ieee80211_rx_h_action()
3076 	switch (mgmt->u.action.category) {  in ieee80211_rx_h_action()
3079 		if (!rx->sta->sta.ht_cap.ht_supported)  in ieee80211_rx_h_action()
3082 		if (sdata->vif.type != NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_action()
3083 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&  in ieee80211_rx_h_action()
3084 		    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&  in ieee80211_rx_h_action()
3085 		    sdata->vif.type != NL80211_IFTYPE_AP &&  in ieee80211_rx_h_action()
3086 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)  in ieee80211_rx_h_action()
3093 		switch (mgmt->u.action.u.ht_smps.action) {  in ieee80211_rx_h_action()
3100 			switch (mgmt->u.action.u.ht_smps.smps_control) {  in ieee80211_rx_h_action()
3115 			if (rx->sta->sta.smps_mode == smps_mode)  in ieee80211_rx_h_action()
3117 			rx->sta->sta.smps_mode = smps_mode;  in ieee80211_rx_h_action()
3122 			sband = rx->local->hw.wiphy->bands[status->band];  in ieee80211_rx_h_action()
3124 			rate_control_rate_update(local, sband, rx->sta,  in ieee80211_rx_h_action()
3126 			cfg80211_sta_opmode_change_notify(sdata->dev,  in ieee80211_rx_h_action()
3127 							  rx->sta->addr,  in ieee80211_rx_h_action()
3134 			u8 chanwidth = mgmt->u.action.u.ht_notify_cw.chanwidth;  in ieee80211_rx_h_action()
3139 			if (!(rx->sta->sta.ht_cap.cap &  in ieee80211_rx_h_action()
3146 				max_bw = ieee80211_sta_cap_rx_bw(rx->sta);  in ieee80211_rx_h_action()
3149 			rx->sta->cur_max_bandwidth = max_bw;  in ieee80211_rx_h_action()
3150 			new_bw = ieee80211_sta_cur_vht_bw(rx->sta);  in ieee80211_rx_h_action()
3152 			if (rx->sta->sta.bandwidth == new_bw)  in ieee80211_rx_h_action()
3155 			rx->sta->sta.bandwidth = new_bw;  in ieee80211_rx_h_action()
3156 			sband = rx->local->hw.wiphy->bands[status->band];  in ieee80211_rx_h_action()
3158 				ieee80211_sta_rx_bw_to_chan_width(rx->sta);  in ieee80211_rx_h_action()
3161 			rate_control_rate_update(local, sband, rx->sta,  in ieee80211_rx_h_action()
3163 			cfg80211_sta_opmode_change_notify(sdata->dev,  in ieee80211_rx_h_action()
3164 							  rx->sta->addr,  in ieee80211_rx_h_action()
3177 		if (sdata->vif.type != NL80211_IFTYPE_STATION)  in ieee80211_rx_h_action()
3179 		if (!rx->sta)  in ieee80211_rx_h_action()
3181 		if (!ether_addr_equal(mgmt->bssid, sdata->u.mgd.bssid))  in ieee80211_rx_h_action()
3183 		if (mgmt->u.action.u.ext_chan_switch.action_code !=  in ieee80211_rx_h_action()
3191 		if (sdata->vif.type != NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_action()
3192 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&  in ieee80211_rx_h_action()
3193 		    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&  in ieee80211_rx_h_action()
3194 		    sdata->vif.type != NL80211_IFTYPE_AP &&  in ieee80211_rx_h_action()
3195 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)  in ieee80211_rx_h_action()
3202 		switch (mgmt->u.action.u.vht_opmode_notif.action_code) {  in ieee80211_rx_h_action()
3219 		if (sdata->vif.type != NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_action()
3220 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&  in ieee80211_rx_h_action()
3221 		    sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&  in ieee80211_rx_h_action()
3222 		    sdata->vif.type != NL80211_IFTYPE_AP &&  in ieee80211_rx_h_action()
3223 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)  in ieee80211_rx_h_action()
3230 		switch (mgmt->u.action.u.addba_req.action_code) {  in ieee80211_rx_h_action()
3233 				   sizeof(mgmt->u.action.u.addba_req)))  in ieee80211_rx_h_action()
3238 				   sizeof(mgmt->u.action.u.addba_resp)))  in ieee80211_rx_h_action()
3243 				   sizeof(mgmt->u.action.u.delba)))  in ieee80211_rx_h_action()
3256 		switch (mgmt->u.action.u.measurement.action_code) {  in ieee80211_rx_h_action()
3258 			if (status->band != NL80211_BAND_5GHZ)  in ieee80211_rx_h_action()
3262 				   sizeof(mgmt->u.action.u.measurement)))  in ieee80211_rx_h_action()
3265 			if (sdata->vif.type != NL80211_IFTYPE_STATION)  in ieee80211_rx_h_action()
3273 				   sizeof(mgmt->u.action.u.chan_switch)))  in ieee80211_rx_h_action()
3276 			if (sdata->vif.type != NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_action()
3277 			    sdata->vif.type != NL80211_IFTYPE_ADHOC &&  in ieee80211_rx_h_action()
3278 			    sdata->vif.type != NL80211_IFTYPE_MESH_POINT)  in ieee80211_rx_h_action()
3281 			if (sdata->vif.type == NL80211_IFTYPE_STATION)  in ieee80211_rx_h_action()
3282 				bssid = sdata->u.mgd.bssid;  in ieee80211_rx_h_action()
3283 			else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)  in ieee80211_rx_h_action()
3284 				bssid = sdata->u.ibss.bssid;  in ieee80211_rx_h_action()
3285 			else if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT)  in ieee80211_rx_h_action()
3286 				bssid = mgmt->sa;  in ieee80211_rx_h_action()
3290 			if (!ether_addr_equal(mgmt->bssid, bssid))  in ieee80211_rx_h_action()
3299 			   sizeof(mgmt->u.action.u.sa_query)))  in ieee80211_rx_h_action()
3302 		switch (mgmt->u.action.u.sa_query.action) {  in ieee80211_rx_h_action()
3304 			if (sdata->vif.type != NL80211_IFTYPE_STATION)  in ieee80211_rx_h_action()
3312 			   sizeof(mgmt->u.action.u.self_prot.action_code)))  in ieee80211_rx_h_action()
3315 		switch (mgmt->u.action.u.self_prot.action_code) {  in ieee80211_rx_h_action()
3319 			if (!ieee80211_vif_is_mesh(&sdata->vif))  in ieee80211_rx_h_action()
3321 			if (sdata->u.mesh.user_mpm)  in ieee80211_rx_h_action()
3327 			if (!ieee80211_vif_is_mesh(&sdata->vif))  in ieee80211_rx_h_action()
3334 			   sizeof(mgmt->u.action.u.mesh_action.action_code)))  in ieee80211_rx_h_action()
3337 		if (!ieee80211_vif_is_mesh(&sdata->vif))  in ieee80211_rx_h_action()
3348 	status->rx_flags |= IEEE80211_RX_MALFORMED_ACTION_FRM;  in ieee80211_rx_h_action()
3353 	if (rx->sta)  in ieee80211_rx_h_action()
3354 		rx->sta->rx_stats.packets++;  in ieee80211_rx_h_action()
3355 	dev_kfree_skb(rx->skb);  in ieee80211_rx_h_action()
3359 	skb_queue_tail(&sdata->skb_queue, rx->skb);  in ieee80211_rx_h_action()
3360 	ieee80211_queue_work(&local->hw, &sdata->work);  in ieee80211_rx_h_action()
3361 	if (rx->sta)  in ieee80211_rx_h_action()
3362 		rx->sta->rx_stats.packets++;  in ieee80211_rx_h_action()
3369 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_userspace_mgmt()
3372 	/* skip known-bad action frames and return them in the next handler */  in ieee80211_rx_h_userspace_mgmt()
3373 	if (status->rx_flags & IEEE80211_RX_MALFORMED_ACTION_FRM)  in ieee80211_rx_h_userspace_mgmt()
3383 	if (ieee80211_hw_check(&rx->local->hw, SIGNAL_DBM) &&  in ieee80211_rx_h_userspace_mgmt()
3384 	    !(status->flag & RX_FLAG_NO_SIGNAL_VAL))  in ieee80211_rx_h_userspace_mgmt()
3385 		sig = status->signal;  in ieee80211_rx_h_userspace_mgmt()
3387 	if (cfg80211_rx_mgmt(&rx->sdata->wdev, status->freq, sig,  in ieee80211_rx_h_userspace_mgmt()
3388 			     rx->skb->data, rx->skb->len, 0)) {  in ieee80211_rx_h_userspace_mgmt()
3389 		if (rx->sta)  in ieee80211_rx_h_userspace_mgmt()
3390 			rx->sta->rx_stats.packets++;  in ieee80211_rx_h_userspace_mgmt()
3391 		dev_kfree_skb(rx->skb);  in ieee80211_rx_h_userspace_mgmt()
3401 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_h_action_return()
3402 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;  in ieee80211_rx_h_action_return()
3404 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_action_return()
3405 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);  in ieee80211_rx_h_action_return()
3407 	if (!ieee80211_is_action(mgmt->frame_control))  in ieee80211_rx_h_action_return()
3415 	 * 802.11-2012 9.24.4.  in ieee80211_rx_h_action_return()
3420 	if (!(status->rx_flags & IEEE80211_RX_MALFORMED_ACTION_FRM) &&  in ieee80211_rx_h_action_return()
3421 	    (sdata->vif.type == NL80211_IFTYPE_AP ||  in ieee80211_rx_h_action_return()
3422 	     sdata->vif.type == NL80211_IFTYPE_AP_VLAN))  in ieee80211_rx_h_action_return()
3425 	if (is_multicast_ether_addr(mgmt->da))  in ieee80211_rx_h_action_return()
3429 	if (mgmt->u.action.category & 0x80)  in ieee80211_rx_h_action_return()
3432 	nskb = skb_copy_expand(rx->skb, local->hw.extra_tx_headroom, 0,  in ieee80211_rx_h_action_return()
3435 		struct ieee80211_mgmt *nmgmt = (void *)nskb->data;  in ieee80211_rx_h_action_return()
3437 		nmgmt->u.action.category |= 0x80;  in ieee80211_rx_h_action_return()
3438 		memcpy(nmgmt->da, nmgmt->sa, ETH_ALEN);  in ieee80211_rx_h_action_return()
3439 		memcpy(nmgmt->sa, rx->sdata->vif.addr, ETH_ALEN);  in ieee80211_rx_h_action_return()
3441 		memset(nskb->cb, 0, sizeof(nskb->cb));  in ieee80211_rx_h_action_return()
3443 		if (rx->sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {  in ieee80211_rx_h_action_return()
3446 			info->flags = IEEE80211_TX_CTL_TX_OFFCHAN |  in ieee80211_rx_h_action_return()
3449 			if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))  in ieee80211_rx_h_action_return()
3450 				info->hw_queue =  in ieee80211_rx_h_action_return()
3451 					local->hw.offchannel_tx_hw_queue;  in ieee80211_rx_h_action_return()
3454 		__ieee80211_tx_skb_tid_band(rx->sdata, nskb, 7,  in ieee80211_rx_h_action_return()
3455 					    status->band, 0);  in ieee80211_rx_h_action_return()
3457 	dev_kfree_skb(rx->skb);  in ieee80211_rx_h_action_return()
3464 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_rx_h_mgmt()
3465 	struct ieee80211_mgmt *mgmt = (void *)rx->skb->data;  in ieee80211_rx_h_mgmt()
3468 	stype = mgmt->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE);  in ieee80211_rx_h_mgmt()
3470 	if (!ieee80211_vif_is_mesh(&sdata->vif) &&  in ieee80211_rx_h_mgmt()
3471 	    sdata->vif.type != NL80211_IFTYPE_ADHOC &&  in ieee80211_rx_h_mgmt()
3472 	    sdata->vif.type != NL80211_IFTYPE_OCB &&  in ieee80211_rx_h_mgmt()
3473 	    sdata->vif.type != NL80211_IFTYPE_STATION)  in ieee80211_rx_h_mgmt()
3483 		if (is_multicast_ether_addr(mgmt->da) &&  in ieee80211_rx_h_mgmt()
3484 		    !is_broadcast_ether_addr(mgmt->da))  in ieee80211_rx_h_mgmt()
3488 		if (sdata->vif.type != NL80211_IFTYPE_STATION &&  in ieee80211_rx_h_mgmt()
3489 		    sdata->vif.type != NL80211_IFTYPE_ADHOC)  in ieee80211_rx_h_mgmt()
3495 		if (is_multicast_ether_addr(mgmt->da) &&  in ieee80211_rx_h_mgmt()
3496 		    !is_broadcast_ether_addr(mgmt->da))  in ieee80211_rx_h_mgmt()
3500 		if (sdata->vif.type != NL80211_IFTYPE_STATION)  in ieee80211_rx_h_mgmt()
3505 		if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&  in ieee80211_rx_h_mgmt()
3506 		    sdata->vif.type != NL80211_IFTYPE_MESH_POINT)  in ieee80211_rx_h_mgmt()
3514 	skb_queue_tail(&sdata->skb_queue, rx->skb);  in ieee80211_rx_h_mgmt()
3515 	ieee80211_queue_work(&rx->local->hw, &sdata->work);  in ieee80211_rx_h_mgmt()
3516 	if (rx->sta)  in ieee80211_rx_h_mgmt()
3517 		rx->sta->rx_stats.packets++;  in ieee80211_rx_h_mgmt()
3526 	struct ieee80211_local *local = rx->local;  in ieee80211_rx_cooked_monitor()
3527 	struct sk_buff *skb = rx->skb, *skb2;  in ieee80211_rx_cooked_monitor()
3536 	if (rx->flags & IEEE80211_RX_CMNTR)  in ieee80211_rx_cooked_monitor()
3538 	rx->flags |= IEEE80211_RX_CMNTR;  in ieee80211_rx_cooked_monitor()
3541 	if (!local->cooked_mntrs)  in ieee80211_rx_cooked_monitor()
3545 	status->flag &= ~RX_FLAG_RADIOTAP_VENDOR_DATA;  in ieee80211_rx_cooked_monitor()
3558 	skb->ip_summed = CHECKSUM_UNNECESSARY;  in ieee80211_rx_cooked_monitor()
3559 	skb->pkt_type = PACKET_OTHERHOST;  in ieee80211_rx_cooked_monitor()
3560 	skb->protocol = htons(ETH_P_802_2);  in ieee80211_rx_cooked_monitor()
3562 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in ieee80211_rx_cooked_monitor()
3566 		if (sdata->vif.type != NL80211_IFTYPE_MONITOR ||  in ieee80211_rx_cooked_monitor()
3567 		    !(sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES))  in ieee80211_rx_cooked_monitor()
3573 				skb2->dev = prev_dev;  in ieee80211_rx_cooked_monitor()
3578 		prev_dev = sdata->dev;  in ieee80211_rx_cooked_monitor()
3579 		ieee80211_rx_stats(sdata->dev, skb->len);  in ieee80211_rx_cooked_monitor()
3583 		skb->dev = prev_dev;  in ieee80211_rx_cooked_monitor()
3597 		I802_DEBUG_INC(rx->sdata->local->rx_handlers_drop);  in ieee80211_rx_handlers_result()
3598 		if (rx->sta)  in ieee80211_rx_handlers_result()
3599 			rx->sta->rx_stats.dropped++;  in ieee80211_rx_handlers_result()
3606 		status = IEEE80211_SKB_RXCB((rx->skb));  in ieee80211_rx_handlers_result()
3608 		sband = rx->local->hw.wiphy->bands[status->band];  in ieee80211_rx_handlers_result()
3609 		if (status->encoding == RX_ENC_LEGACY)  in ieee80211_rx_handlers_result()
3610 			rate = &sband->bitrates[status->rate_idx];  in ieee80211_rx_handlers_result()
3616 		I802_DEBUG_INC(rx->sdata->local->rx_handlers_drop);  in ieee80211_rx_handlers_result()
3617 		if (rx->sta)  in ieee80211_rx_handlers_result()
3618 			rx->sta->rx_stats.dropped++;  in ieee80211_rx_handlers_result()
3619 		dev_kfree_skb(rx->skb);  in ieee80211_rx_handlers_result()
3622 		I802_DEBUG_INC(rx->sdata->local->rx_handlers_queued);  in ieee80211_rx_handlers_result()
3646 	spin_lock_bh(&rx->local->rx_path_lock);  in ieee80211_rx_handlers()
3654 		rx->skb = skb;  in ieee80211_rx_handlers()
3664 		if (ieee80211_vif_is_mesh(&rx->sdata->vif))  in ieee80211_rx_handlers()
3670 		/* special treatment -- needs the queue */  in ieee80211_rx_handlers()
3687 	spin_unlock_bh(&rx->local->rx_path_lock);  in ieee80211_rx_handlers()
3727 		.sdata = sta->sdata,  in ieee80211_release_reorder_timeout()
3728 		.local = sta->local,  in ieee80211_release_reorder_timeout()
3729 		/* This is OK -- must be QoS data frame */  in ieee80211_release_reorder_timeout()
3736 	tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);  in ieee80211_release_reorder_timeout()
3742 	spin_lock(&tid_agg_rx->reorder_lock);  in ieee80211_release_reorder_timeout()
3743 	ieee80211_sta_reorder_release(sta->sdata, tid_agg_rx, &frames);  in ieee80211_release_reorder_timeout()
3744 	spin_unlock(&tid_agg_rx->reorder_lock);  in ieee80211_release_reorder_timeout()
3750 			.u.ba.sta = &sta->sta,  in ieee80211_release_reorder_timeout()
3766 		/* This is OK -- must be QoS data frame */  in ieee80211_mark_rx_ba_filtered_frames()
3780 	rx.sdata = sta->sdata;  in ieee80211_mark_rx_ba_filtered_frames()
3781 	rx.local = sta->local;  in ieee80211_mark_rx_ba_filtered_frames()
3784 	tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);  in ieee80211_mark_rx_ba_filtered_frames()
3788 	spin_lock_bh(&tid_agg_rx->reorder_lock);  in ieee80211_mark_rx_ba_filtered_frames()
3794 		release = (tid_agg_rx->head_seq_num + tid_agg_rx->buf_size) %  in ieee80211_mark_rx_ba_filtered_frames()
3796 		ieee80211_release_reorder_frames(sta->sdata, tid_agg_rx,  in ieee80211_mark_rx_ba_filtered_frames()
3799 		tid_agg_rx->head_seq_num = ssn;  in ieee80211_mark_rx_ba_filtered_frames()
3801 		ieee80211_release_reorder_frames(sta->sdata, tid_agg_rx, ssn,  in ieee80211_mark_rx_ba_filtered_frames()
3806 	 * it can be tid_agg_rx->buf_size behind and still be valid */  in ieee80211_mark_rx_ba_filtered_frames()
3807 	diff = (tid_agg_rx->head_seq_num - ssn) & IEEE80211_SN_MASK;  in ieee80211_mark_rx_ba_filtered_frames()
3808 	if (diff >= tid_agg_rx->buf_size) {  in ieee80211_mark_rx_ba_filtered_frames()
3809 		tid_agg_rx->reorder_buf_filtered = 0;  in ieee80211_mark_rx_ba_filtered_frames()
3816 	for (i = 0; i < tid_agg_rx->buf_size; i++) {  in ieee80211_mark_rx_ba_filtered_frames()
3817 		int index = (ssn + i) % tid_agg_rx->buf_size;  in ieee80211_mark_rx_ba_filtered_frames()
3819 		tid_agg_rx->reorder_buf_filtered &= ~BIT_ULL(index);  in ieee80211_mark_rx_ba_filtered_frames()
3821 			tid_agg_rx->reorder_buf_filtered |= BIT_ULL(index);  in ieee80211_mark_rx_ba_filtered_frames()
3825 	ieee80211_sta_reorder_release(sta->sdata, tid_agg_rx, &frames);  in ieee80211_mark_rx_ba_filtered_frames()
3828 	spin_unlock_bh(&tid_agg_rx->reorder_lock);  in ieee80211_mark_rx_ba_filtered_frames()
3841 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_accept_frame()
3842 	struct sk_buff *skb = rx->skb;  in ieee80211_accept_frame()
3843 	struct ieee80211_hdr *hdr = (void *)skb->data;  in ieee80211_accept_frame()
3845 	u8 *bssid = ieee80211_get_bssid(hdr, skb->len, sdata->vif.type);  in ieee80211_accept_frame()
3846 	bool multicast = is_multicast_ether_addr(hdr->addr1);  in ieee80211_accept_frame()
3848 	switch (sdata->vif.type) {  in ieee80211_accept_frame()
3850 		if (!bssid && !sdata->u.mgd.use_4addr)  in ieee80211_accept_frame()
3852 		if (ieee80211_is_robust_mgmt_frame(skb) && !rx->sta)  in ieee80211_accept_frame()
3856 		return ether_addr_equal(sdata->vif.addr, hdr->addr1);  in ieee80211_accept_frame()
3860 		if (ether_addr_equal(sdata->vif.addr, hdr->addr2) ||  in ieee80211_accept_frame()
3861 		    ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2))  in ieee80211_accept_frame()
3863 		if (ieee80211_is_beacon(hdr->frame_control))  in ieee80211_accept_frame()
3865 		if (!ieee80211_bssid_match(bssid, sdata->u.ibss.bssid))  in ieee80211_accept_frame()
3868 		    !ether_addr_equal(sdata->vif.addr, hdr->addr1))  in ieee80211_accept_frame()
3870 		if (!rx->sta) {  in ieee80211_accept_frame()
3872 			if (status->encoding != RX_ENC_LEGACY)  in ieee80211_accept_frame()
3875 				rate_idx = status->rate_idx;  in ieee80211_accept_frame()
3876 			ieee80211_ibss_rx_no_sta(sdata, bssid, hdr->addr2,  in ieee80211_accept_frame()
3883 		if (!ieee80211_is_data_present(hdr->frame_control))  in ieee80211_accept_frame()
3888 		    !ether_addr_equal(sdata->dev->dev_addr, hdr->addr1))  in ieee80211_accept_frame()
3890 		if (!rx->sta) {  in ieee80211_accept_frame()
3892 			if (status->encoding != RX_ENC_LEGACY)  in ieee80211_accept_frame()
3895 				rate_idx = status->rate_idx;  in ieee80211_accept_frame()
3896 			ieee80211_ocb_rx_no_sta(sdata, bssid, hdr->addr2,  in ieee80211_accept_frame()
3901 		if (ether_addr_equal(sdata->vif.addr, hdr->addr2))  in ieee80211_accept_frame()
3905 		return ether_addr_equal(sdata->vif.addr, hdr->addr1);  in ieee80211_accept_frame()
3909 			return ether_addr_equal(sdata->vif.addr, hdr->addr1);  in ieee80211_accept_frame()
3911 		if (!ieee80211_bssid_match(bssid, sdata->vif.addr)) {  in ieee80211_accept_frame()
3919 			    !ether_addr_equal(sdata->vif.addr, hdr->addr1))  in ieee80211_accept_frame()
3921 			if (ieee80211_is_public_action(hdr, skb->len))  in ieee80211_accept_frame()
3923 			return ieee80211_is_beacon(hdr->frame_control);  in ieee80211_accept_frame()
3926 		if (!ieee80211_has_tods(hdr->frame_control)) {  in ieee80211_accept_frame()
3927 			/* ignore data frames to TDLS-peers */  in ieee80211_accept_frame()
3928 			if (ieee80211_is_data(hdr->frame_control))  in ieee80211_accept_frame()
3930 			/* ignore action frames to TDLS-peers */  in ieee80211_accept_frame()
3931 			if (ieee80211_is_action(hdr->frame_control) &&  in ieee80211_accept_frame()
3933 			    !ether_addr_equal(bssid, hdr->addr1))  in ieee80211_accept_frame()
3938 		 * 802.11-2016 Table 9-26 says that for data frames, A1 must be  in ieee80211_accept_frame()
3939 		 * the BSSID - we've checked that already but may have accepted  in ieee80211_accept_frame()
3954 		if (ieee80211_is_data(hdr->frame_control) && multicast)  in ieee80211_accept_frame()
3959 		if (bssid || !ieee80211_is_data(hdr->frame_control))  in ieee80211_accept_frame()
3961 		return ether_addr_equal(sdata->u.wds.remote_addr, hdr->addr2);  in ieee80211_accept_frame()
3963 		return ieee80211_is_public_action(hdr, skb->len) ||  in ieee80211_accept_frame()
3964 		       ieee80211_is_probe_req(hdr->frame_control) ||  in ieee80211_accept_frame()
3965 		       ieee80211_is_probe_resp(hdr->frame_control) ||  in ieee80211_accept_frame()
3966 		       ieee80211_is_beacon(hdr->frame_control);  in ieee80211_accept_frame()
3980 	struct ieee80211_sub_if_data *sdata = sta->sdata;  in ieee80211_check_fast_rx()
3981 	struct ieee80211_local *local = sdata->local;  in ieee80211_check_fast_rx()
3984 		.dev = sdata->dev,  in ieee80211_check_fast_rx()
3985 		.vif_type = sdata->vif.type,  in ieee80211_check_fast_rx()
3986 		.control_port_protocol = sdata->control_port_protocol,  in ieee80211_check_fast_rx()
3996 	ether_addr_copy(fastrx.vif_addr, sdata->vif.addr);  in ieee80211_check_fast_rx()
3998 	fastrx.uses_rss = ieee80211_hw_check(&local->hw, USES_RSS);  in ieee80211_check_fast_rx()
4000 	/* fast-rx doesn't do reordering */  in ieee80211_check_fast_rx()
4001 	if (ieee80211_hw_check(&local->hw, AMPDU_AGGREGATION) &&  in ieee80211_check_fast_rx()
4002 	    !ieee80211_hw_check(&local->hw, SUPPORTS_REORDERING_BUFFER))  in ieee80211_check_fast_rx()
4005 	switch (sdata->vif.type) {  in ieee80211_check_fast_rx()
4007 		if (sta->sta.tdls) {  in ieee80211_check_fast_rx()
4012 			fastrx.sta_notify = sdata->u.mgd.probe_send_count > 0;  in ieee80211_check_fast_rx()
4019 		if (sdata->u.mgd.use_4addr && !sta->sta.tdls) {  in ieee80211_check_fast_rx()
4026 		if (!sdata->u.mgd.powersave)  in ieee80211_check_fast_rx()
4030 		if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))  in ieee80211_check_fast_rx()
4032 		if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&  in ieee80211_check_fast_rx()
4033 		    !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))  in ieee80211_check_fast_rx()
4038 		/* parallel-rx requires this, at least with calls to  in ieee80211_check_fast_rx()
4041 		if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))  in ieee80211_check_fast_rx()
4048 			!(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&  in ieee80211_check_fast_rx()
4049 			(sdata->vif.type != NL80211_IFTYPE_AP_VLAN ||  in ieee80211_check_fast_rx()
4050 			 !sdata->u.vlan.sta);  in ieee80211_check_fast_rx()
4052 		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&  in ieee80211_check_fast_rx()
4053 		    sdata->u.vlan.sta) {  in ieee80211_check_fast_rx()
4069 	key = rcu_dereference(sta->ptk[sta->ptk_idx]);  in ieee80211_check_fast_rx()
4071 		switch (key->conf.cipher) {  in ieee80211_check_fast_rx()
4073 			/* we don't want to deal with MMIC in fast-rx */  in ieee80211_check_fast_rx()
4092 		fastrx.icv_len = key->conf.icv_len;  in ieee80211_check_fast_rx()
4104 	spin_lock_bh(&sta->lock);  in ieee80211_check_fast_rx()
4105 	old = rcu_dereference_protected(sta->fast_rx, true);  in ieee80211_check_fast_rx()
4106 	rcu_assign_pointer(sta->fast_rx, new);  in ieee80211_check_fast_rx()
4107 	spin_unlock_bh(&sta->lock);  in ieee80211_check_fast_rx()
4117 	spin_lock_bh(&sta->lock);  in ieee80211_clear_fast_rx()
4118 	old = rcu_dereference_protected(sta->fast_rx, true);  in ieee80211_clear_fast_rx()
4119 	RCU_INIT_POINTER(sta->fast_rx, NULL);  in ieee80211_clear_fast_rx()
4120 	spin_unlock_bh(&sta->lock);  in ieee80211_clear_fast_rx()
4128 	struct ieee80211_local *local = sdata->local;  in __ieee80211_check_fast_rx_iface()
4131 	lockdep_assert_held(&local->sta_mtx);  in __ieee80211_check_fast_rx_iface()
4133 	list_for_each_entry(sta, &local->sta_list, list) {  in __ieee80211_check_fast_rx_iface()
4134 		if (sdata != sta->sdata &&  in __ieee80211_check_fast_rx_iface()
4135 		    (!sta->sdata->bss || sta->sdata->bss != sdata->bss))  in __ieee80211_check_fast_rx_iface()
4143 	struct ieee80211_local *local = sdata->local;  in ieee80211_check_fast_rx_iface()
4145 	mutex_lock(&local->sta_mtx);  in ieee80211_check_fast_rx_iface()
4147 	mutex_unlock(&local->sta_mtx);  in ieee80211_check_fast_rx_iface()
4153 	struct sk_buff *skb = rx->skb;  in ieee80211_invoke_fast_rx()
4154 	struct ieee80211_hdr *hdr = (void *)skb->data;  in ieee80211_invoke_fast_rx()
4156 	struct sta_info *sta = rx->sta;  in ieee80211_invoke_fast_rx()
4157 	int orig_len = skb->len;  in ieee80211_invoke_fast_rx()
4158 	int hdrlen = ieee80211_hdrlen(hdr->frame_control);  in ieee80211_invoke_fast_rx()
4168 	struct ieee80211_sta_rx_stats *stats = &sta->rx_stats;  in ieee80211_invoke_fast_rx()
4170 	if (fast_rx->uses_rss)  in ieee80211_invoke_fast_rx()
4171 		stats = this_cpu_ptr(sta->pcpu_rx_stats);  in ieee80211_invoke_fast_rx()
4173 	/* for parallel-rx, we need to have DUP_VALIDATED, otherwise we write  in ieee80211_invoke_fast_rx()
4177 	if (!(status->flag & RX_FLAG_DUP_VALIDATED))  in ieee80211_invoke_fast_rx()
4183 	 *  - PN_VALIDATED: similar, but the implementation is tricky  in ieee80211_invoke_fast_rx()
4184 	 *  - DECRYPTED: necessary for PN_VALIDATED  in ieee80211_invoke_fast_rx()
4186 	if (fast_rx->key &&  in ieee80211_invoke_fast_rx()
4187 	    (status->flag & FAST_RX_CRYPT_FLAGS) != FAST_RX_CRYPT_FLAGS)  in ieee80211_invoke_fast_rx()
4190 	if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))  in ieee80211_invoke_fast_rx()
4205 	if (!ether_addr_equal(fast_rx->vif_addr, hdr->addr1))  in ieee80211_invoke_fast_rx()
4208 	if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |  in ieee80211_invoke_fast_rx()
4210 	    fast_rx->expected_ds_bits)  in ieee80211_invoke_fast_rx()
4216 	if (fast_rx->key && !(status->flag & RX_FLAG_IV_STRIPPED)) {  in ieee80211_invoke_fast_rx()
4221 	if (!(status->rx_flags & IEEE80211_RX_AMSDU)) {  in ieee80211_invoke_fast_rx()
4225 		payload = (void *)(skb->data + snap_offs);  in ieee80211_invoke_fast_rx()
4227 		if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))  in ieee80211_invoke_fast_rx()
4232 		 * bridge-tunnel header - but if we get them this way then  in ieee80211_invoke_fast_rx()
4235 		if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||  in ieee80211_invoke_fast_rx()
4236 			     payload->proto == fast_rx->control_port_protocol))  in ieee80211_invoke_fast_rx()
4242 	if (rx->key && !(status->flag & RX_FLAG_MIC_STRIPPED) &&  in ieee80211_invoke_fast_rx()
4243 	    pskb_trim(skb, skb->len - fast_rx->icv_len))  in ieee80211_invoke_fast_rx()
4246 	if (unlikely(fast_rx->sta_notify)) {  in ieee80211_invoke_fast_rx()
4247 		ieee80211_sta_rx_notify(rx->sdata, hdr);  in ieee80211_invoke_fast_rx()
4248 		fast_rx->sta_notify = false;  in ieee80211_invoke_fast_rx()
4252 	if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {  in ieee80211_invoke_fast_rx()
4253 		stats->last_signal = status->signal;  in ieee80211_invoke_fast_rx()
4254 		if (!fast_rx->uses_rss)  in ieee80211_invoke_fast_rx()
4255 			ewma_signal_add(&sta->rx_stats_avg.signal,  in ieee80211_invoke_fast_rx()
4256 					-status->signal);  in ieee80211_invoke_fast_rx()
4259 	if (status->chains) {  in ieee80211_invoke_fast_rx()
4262 		stats->chains = status->chains;  in ieee80211_invoke_fast_rx()
4263 		for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {  in ieee80211_invoke_fast_rx()
4264 			int signal = status->chain_signal[i];  in ieee80211_invoke_fast_rx()
4266 			if (!(status->chains & BIT(i)))  in ieee80211_invoke_fast_rx()
4269 			stats->chain_signal_last[i] = signal;  in ieee80211_invoke_fast_rx()
4270 			if (!fast_rx->uses_rss)  in ieee80211_invoke_fast_rx()
4271 				ewma_signal_add(&sta->rx_stats_avg.chain_signal[i],  in ieee80211_invoke_fast_rx()
4272 						-signal);  in ieee80211_invoke_fast_rx()
4277 	if (rx->key && !ieee80211_has_protected(hdr->frame_control))  in ieee80211_invoke_fast_rx()
4280 	if (status->rx_flags & IEEE80211_RX_AMSDU) {  in ieee80211_invoke_fast_rx()
4281 		if (__ieee80211_rx_h_amsdu(rx, snap_offs - hdrlen) !=  in ieee80211_invoke_fast_rx()
4288 	stats->last_rx = jiffies;  in ieee80211_invoke_fast_rx()
4289 	stats->last_rate = sta_stats_encode_rate(status);  in ieee80211_invoke_fast_rx()
4291 	stats->fragments++;  in ieee80211_invoke_fast_rx()
4292 	stats->packets++;  in ieee80211_invoke_fast_rx()
4294 	/* do the header conversion - first grab the addresses */  in ieee80211_invoke_fast_rx()
4295 	ether_addr_copy(addrs.da, skb->data + fast_rx->da_offs);  in ieee80211_invoke_fast_rx()
4296 	ether_addr_copy(addrs.sa, skb->data + fast_rx->sa_offs);  in ieee80211_invoke_fast_rx()
4302 	skb->dev = fast_rx->dev;  in ieee80211_invoke_fast_rx()
4304 	ieee80211_rx_stats(fast_rx->dev, skb->len);  in ieee80211_invoke_fast_rx()
4308 	 * for non-QoS-data frames. Here we know it's a data  in ieee80211_invoke_fast_rx()
4311 	u64_stats_update_begin(&stats->syncp);  in ieee80211_invoke_fast_rx()
4312 	stats->msdu[rx->seqno_idx]++;  in ieee80211_invoke_fast_rx()
4313 	stats->bytes += orig_len;  in ieee80211_invoke_fast_rx()
4314 	u64_stats_update_end(&stats->syncp);  in ieee80211_invoke_fast_rx()
4316 	if (fast_rx->internal_forward) {  in ieee80211_invoke_fast_rx()
4318 		bool multicast = is_multicast_ether_addr(skb->data);  in ieee80211_invoke_fast_rx()
4322 		} else if (sta_info_get(rx->sdata, skb->data)) {  in ieee80211_invoke_fast_rx()
4333 			xmit_skb->priority += 256;  in ieee80211_invoke_fast_rx()
4334 			xmit_skb->protocol = htons(ETH_P_802_3);  in ieee80211_invoke_fast_rx()
4345 	skb->protocol = eth_type_trans(skb, fast_rx->dev);  in ieee80211_invoke_fast_rx()
4346 	memset(skb->cb, 0, sizeof(skb->cb));  in ieee80211_invoke_fast_rx()
4347 	if (rx->napi)  in ieee80211_invoke_fast_rx()
4348 		napi_gro_receive(rx->napi, skb);  in ieee80211_invoke_fast_rx()
4355 	stats->dropped++;  in ieee80211_invoke_fast_rx()
4368 	struct ieee80211_local *local = rx->local;  in ieee80211_prepare_and_rx_handle()
4369 	struct ieee80211_sub_if_data *sdata = rx->sdata;  in ieee80211_prepare_and_rx_handle()
4371 	rx->skb = skb;  in ieee80211_prepare_and_rx_handle()
4373 	/* See if we can do fast-rx; if we have to copy we already lost,  in ieee80211_prepare_and_rx_handle()
4380 	if (consume && rx->sta) {  in ieee80211_prepare_and_rx_handle()
4383 		fast_rx = rcu_dereference(rx->sta->fast_rx);  in ieee80211_prepare_and_rx_handle()
4395 				wiphy_debug(local->hw.wiphy,  in ieee80211_prepare_and_rx_handle()
4397 					sdata->name);  in ieee80211_prepare_and_rx_handle()
4401 		rx->skb = skb;  in ieee80211_prepare_and_rx_handle()
4426 	fc = ((struct ieee80211_hdr *)skb->data)->frame_control;  in __ieee80211_rx_handle_packet()
4433 		I802_DEBUG_INC(local->dot11ReceivedFragmentCount);  in __ieee80211_rx_handle_packet()
4437 		if (skb->len < ieee80211_hdrlen(fc))  in __ieee80211_rx_handle_packet()
4438 			err = -ENOBUFS;  in __ieee80211_rx_handle_packet()
4450 	hdr = (struct ieee80211_hdr *)skb->data;  in __ieee80211_rx_handle_packet()
4454 	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control) ||  in __ieee80211_rx_handle_packet()
4455 		     ieee80211_is_beacon(hdr->frame_control)))  in __ieee80211_rx_handle_packet()
4463 			rx.sdata = rx.sta->sdata;  in __ieee80211_rx_handle_packet()
4471 		for_each_sta_info(local, hdr->addr2, sta, tmp) {  in __ieee80211_rx_handle_packet()
4478 			rx.sdata = prev_sta->sdata;  in __ieee80211_rx_handle_packet()
4486 			rx.sdata = prev_sta->sdata;  in __ieee80211_rx_handle_packet()
4496 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {  in __ieee80211_rx_handle_packet()
4500 		if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||  in __ieee80211_rx_handle_packet()
4501 		    sdata->vif.type == NL80211_IFTYPE_AP_VLAN)  in __ieee80211_rx_handle_packet()
4515 		rx.sta = sta_info_get_bss(prev, hdr->addr2);  in __ieee80211_rx_handle_packet()
4523 		rx.sta = sta_info_get_bss(prev, hdr->addr2);  in __ieee80211_rx_handle_packet()
4548 	if (WARN_ON(status->band >= NUM_NL80211_BANDS))  in ieee80211_rx_napi()
4551 	sband = local->hw.wiphy->bands[status->band];  in ieee80211_rx_napi()
4562 	if (unlikely(local->quiescing || local->suspended))  in ieee80211_rx_napi()
4566 	if (unlikely(local->in_reconfig))  in ieee80211_rx_napi()
4573 	if (WARN_ON(!local->started))  in ieee80211_rx_napi()
4576 	if (likely(!(status->flag & RX_FLAG_FAILED_PLCP_CRC))) {  in ieee80211_rx_napi()
4582 		switch (status->encoding) {  in ieee80211_rx_napi()
4585 			 * rate_idx is MCS index, which can be [0-76]  in ieee80211_rx_napi()
4594 			if (WARN(status->rate_idx > 76,  in ieee80211_rx_napi()
4596 				 "status->rate_idx is not "  in ieee80211_rx_napi()
4597 				 "an MCS index [0-76]: %d (0x%02x)\n",  in ieee80211_rx_napi()
4598 				 status->rate_idx,  in ieee80211_rx_napi()
4599 				 status->rate_idx))  in ieee80211_rx_napi()
4603 			if (WARN_ONCE(status->rate_idx > 9 ||  in ieee80211_rx_napi()
4604 				      !status->nss ||  in ieee80211_rx_napi()
4605 				      status->nss > 8,  in ieee80211_rx_napi()
4607 				      status->rate_idx, status->nss))  in ieee80211_rx_napi()
4611 			if (WARN_ONCE(status->rate_idx > 11 ||  in ieee80211_rx_napi()
4612 				      !status->nss ||  in ieee80211_rx_napi()
4613 				      status->nss > 8,  in ieee80211_rx_napi()
4615 				      status->rate_idx, status->nss))  in ieee80211_rx_napi()
4622 			if (WARN_ON(status->rate_idx >= sband->n_bitrates))  in ieee80211_rx_napi()
4624 			rate = &sband->bitrates[status->rate_idx];  in ieee80211_rx_napi()
4628 	status->rx_flags = 0;  in ieee80211_rx_napi()
4632 	 * and this requires that we are in a read-side RCU section during  in ieee80211_rx_napi()
4650 			((struct ieee80211_hdr *)skb->data)->frame_control,  in ieee80211_rx_napi()
4651 			skb->len);  in ieee80211_rx_napi()
4669 	BUILD_BUG_ON(sizeof(struct ieee80211_rx_status) > sizeof(skb->cb));  in ieee80211_rx_irqsafe()
4671 	skb->pkt_type = IEEE80211_RX_MSG;  in ieee80211_rx_irqsafe()
4672 	skb_queue_tail(&local->skb_queue, skb);  in ieee80211_rx_irqsafe()
4673 	tasklet_schedule(&local->tasklet);  in ieee80211_rx_irqsafe()