android_kernel_samsung_sm8650-modules/umac/cmn_services/utils/src/wlan_utility.c

/*
 * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved.
 * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/**
 * DOC: This file contains definition for mandatory legacy API
 */

#include "qdf_str.h"
#include "wlan_utility.h"
#include <wlan_cmn.h>
#include "wlan_osif_priv.h"
#include <net/cfg80211.h>
#include <qdf_module.h>
#include <wlan_vdev_mlme_api.h>
#include "cfg_ucfg_api.h"
#include <wlan_serialization_api.h>

/* CRC polynomial 0xedb88320 */
static unsigned long const wlan_shortssid_table[] = {
	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
	0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
	0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
	0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
	0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
	0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
	0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
	0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
	0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
	0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
	0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
	0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
	0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
	0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
	0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
	0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
	0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
	0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
	0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
	0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
	0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
	0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

uint32_t wlan_construct_shortssid(uint8_t *ssid, uint8_t ssid_len)
{
	uint32_t shortssid = 0xffffffff;
	uint8_t i;

	if (!ssid || ssid_len > WLAN_SSID_MAX_LEN)
		return shortssid;

	for (i = 0; i < ssid_len; i++)
		shortssid = wlan_shortssid_table[(shortssid ^ ssid[i]) & 0xff] ^
						(shortssid >> 8);
	return (shortssid ^ 0xffffffff);
}

uint32_t wlan_chan_to_freq(uint8_t chan)
{
	if (chan == 0 )
		return 0;

	if (chan < WLAN_24_GHZ_CHANNEL_14)
		return WLAN_24_GHZ_BASE_FREQ + chan * WLAN_CHAN_SPACING_5MHZ;
	else if (chan == WLAN_24_GHZ_CHANNEL_14)
		return WLAN_CHAN_14_FREQ;
	else if (chan < WLAN_24_GHZ_CHANNEL_27)
		/* ch 15 - ch 26 */
		return WLAN_CHAN_15_FREQ +
		  (chan - WLAN_24_GHZ_CHANNEL_15) * WLAN_CHAN_SPACING_20MHZ;
	else if (chan == WLAN_5_GHZ_CHANNEL_170)
		return WLAN_CHAN_170_FREQ;
	else
		return WLAN_5_GHZ_BASE_FREQ + chan * WLAN_CHAN_SPACING_5MHZ;
}

uint8_t wlan_freq_to_chan(uint32_t freq)
{
	uint8_t chan;

	if (freq == 0)
		return 0;

	if (freq > WLAN_24_GHZ_BASE_FREQ && freq < WLAN_CHAN_14_FREQ)
		chan = ((freq - WLAN_24_GHZ_BASE_FREQ) /
			WLAN_CHAN_SPACING_5MHZ);
	else if (freq == WLAN_CHAN_14_FREQ)
		chan = WLAN_24_GHZ_CHANNEL_14;
	else if ((freq > WLAN_24_GHZ_BASE_FREQ) &&
		(freq < WLAN_5_GHZ_BASE_FREQ))
		chan = (((freq - WLAN_CHAN_15_FREQ) /
			WLAN_CHAN_SPACING_20MHZ) +
			WLAN_24_GHZ_CHANNEL_15);
	else
		chan = (freq - WLAN_5_GHZ_BASE_FREQ) /
			WLAN_CHAN_SPACING_5MHZ;

	return chan;
}

void
wlan_get_320_center_freq(qdf_freq_t freq,
			 qdf_freq_t *center_freq1,
			 qdf_freq_t *center_freq2)
{
	*center_freq1 = 0;
	*center_freq2 = 0;

	if ((freq >= 5500) && (freq <= 5800)) {
		*center_freq1 = 5650;
	} else if ((freq >= 5955) && (freq <= 6095)) {
		*center_freq1 = 6105;
	} else if ((freq >= 6115) && (freq <= 6255)) {
		*center_freq1 = 6105;
		*center_freq2 = 6265;
	} else if ((freq >= 6275) && (freq <= 6415)) {
		*center_freq1 = 6265;
		*center_freq2 = 6425;
	} else if ((freq >= 6435) && (freq <= 6575)) {
		*center_freq1 = 6425;
		*center_freq2 = 6585;
	} else if ((freq >= 6595) && (freq <= 6735)) {
		*center_freq1 = 6585;
		*center_freq2 = 6745;
	} else if ((freq >= 6755) && (freq <= 6895)) {
		*center_freq1 = 6745;
		*center_freq2 = 6905;
	} else if ((freq >= 6915) && (freq <= 7055)) {
		*center_freq1 = 6905;
	}
}

bool wlan_is_ie_valid(const uint8_t *ie, size_t ie_len)
{
	uint8_t elen;

	while (ie_len) {
		if (ie_len < 2)
			return false;

		elen = ie[1];
		ie_len -= 2;
		ie += 2;
		if (elen > ie_len)
			return false;

		ie_len -= elen;
		ie += elen;
	}

	return true;
}

static const uint8_t *wlan_get_ie_ptr_from_eid_n_oui(uint8_t eid,
						     const uint8_t *oui,
						     uint8_t oui_size,
						     const uint8_t *ie,
						     uint16_t ie_len)
{
	int32_t left = ie_len;
	const uint8_t *ptr = ie;
	uint8_t elem_id, elem_len;

	while (left >= 2) {
		elem_id  = ptr[0];
		elem_len = ptr[1];
		left -= 2;

		if (elem_len > left)
			return NULL;

		if (eid == elem_id) {
			/* if oui is not provide eid match is enough */
			if (!oui)
				return ptr;

			/*
			 * if oui is provided and oui_size is more than left
			 * bytes, then we cannot have match
			 */
			if (oui_size > left)
				return NULL;

			if (qdf_mem_cmp(&ptr[2], oui, oui_size) == 0)
				return ptr;
		}

		left -= elem_len;
		ptr += (elem_len + 2);
	}

	return NULL;
}

const uint8_t *wlan_get_ie_ptr_from_eid(uint8_t eid,
					const uint8_t *ie,
					int ie_len)
{
	return wlan_get_ie_ptr_from_eid_n_oui(eid, NULL, 0, ie, ie_len);
}

const uint8_t *wlan_get_vendor_ie_ptr_from_oui(const uint8_t *oui,
					       uint8_t oui_size,
					       const uint8_t *ie,
					       uint16_t ie_len)
{
	return wlan_get_ie_ptr_from_eid_n_oui(WLAN_MAC_EID_VENDOR,
					      oui, oui_size, ie, ie_len);
}

const uint8_t *wlan_get_ext_ie_ptr_from_ext_id(const uint8_t *oui,
					       uint8_t oui_size,
					       const uint8_t *ie,
					       uint16_t ie_len)
{
	return wlan_get_ie_ptr_from_eid_n_oui(WLAN_MAC_EID_EXT,
					      oui, oui_size, ie, ie_len);
}

static inline
QDF_STATUS wlan_get_elemunit_info(bool is_subelem,
				  uint8_t subelemfragid,
				  uint8_t *elemunit_fragid,
				  qdf_size_t *elemunit_hdrlen,
				  qdf_size_t *elemunit_maxpayloadlen,
				  int *elemunit_id_pos,
				  int *elemunit_len_pos,
				  int *elemunit_idext_pos)
{
	/* Helper function to populate information about the given element unit.
	 * Here, an 'element unit' refers to either an 802.11 element or a
	 * 802.11 subelement.
	 *
	 * Populating this information in a central helper here allows for
	 * better control over handling of future variances, and also for common
	 * code for handling different types of element units.
	 */

	if (is_subelem) {
		/* Populate the subelement header length */
		if (elemunit_hdrlen)
			*elemunit_hdrlen = sizeof(struct subelem_header);

		/* Populate the subelement's max payload length */
		if (elemunit_maxpayloadlen)
			*elemunit_maxpayloadlen = WLAN_MAX_SUBELEM_LEN;

		/* Populate the index position for the subelement ID */
		if (elemunit_id_pos)
			*elemunit_id_pos = qdf_offsetof(struct subelem_header,
							subelem_id);

		/* Populate the index position for the subelement length */
		if (elemunit_len_pos)
			*elemunit_len_pos = qdf_offsetof(struct subelem_header,
							 subelem_len);

		/* Mark that there is (currently) no valid value for subelement
		 * ID extension.
		 */
		if (elemunit_idext_pos)
			*elemunit_idext_pos = -1;

		/* Populate the subelement fragment ID (which can vary by
		 * protocol area). This could also have been directly populated
		 * by the caller, but we populate it here for uniformity and
		 * future control of variability.
		 */
		if (elemunit_fragid)
			*elemunit_fragid = subelemfragid;
	} else {
		/* Populate the element header length */
		if (elemunit_hdrlen)
			*elemunit_hdrlen = sizeof(struct ie_header);

		/* Populate the element's max payload length */
		if (elemunit_maxpayloadlen)
			*elemunit_maxpayloadlen = WLAN_MAX_IE_LEN;

		/* Populate the index position for the element ID */
		if (elemunit_id_pos)
			*elemunit_id_pos = qdf_offsetof(struct ie_header,
							ie_id);

		/* Populate the index position for the element length */
		if (elemunit_len_pos)
			*elemunit_len_pos = qdf_offsetof(struct ie_header,
							 ie_len);

		/* Populate the index position for the element ID extension
		 */
		if (elemunit_idext_pos)
			*elemunit_idext_pos =
				qdf_offsetof(struct extn_ie_header, ie_extn_id);

		/* Populate the element fragment ID. */
		if (elemunit_fragid)
			*elemunit_fragid = WLAN_ELEMID_FRAGMENT;
	}

	return QDF_STATUS_SUCCESS;
}

static QDF_STATUS
wlan_get_elemsubelem_fragseq_creationparams(bool is_subelem,
					    uint8_t id,
					    qdf_size_t payloadlen,
					    bool *is_frag_required,
					    qdf_size_t *expected_fragseqlen,
					    qdf_size_t *prepayload_leadbytes,
					    uint32_t *num_maxsizefrags,
					    qdf_size_t *smallerfrag_size,
					    qdf_size_t *extrahdrbytes)
{
	/* elemunit, i.e. 'element unit' here refers to either an 802.11 element
	 * or a 802.11 subelement.
	 */
	qdf_size_t elemunit_hdrlen;
	qdf_size_t elemunit_maxpayloadlen;

	qdf_size_t tmp_expected_fragseqlen;
	qdf_size_t tmp_prepayload_leadbytes;
	uint32_t tmp_num_maxsizefrags;
	qdf_size_t tmp_smallerfrag_size;
	qdf_size_t tmp_extrahdrbytes;

	QDF_STATUS ret;

	/* Helper function to determine element or subelement fragment sequence
	 * creation parameters. Currently, this helper determines the following
	 * parameters (it is mandatory for the caller to provide the pointer
	 * for the first parameter, those for the remaining are optional):
	 *
	 * - Whether fragmentation is required
	 * If fragmentation is required then the following are determined, else
	 * they should be ignored by the caller:
	 * - Expected fragment sequence length (inclusive of payload and all
	 *   headers)
	 * - The lead bytes that occur before the payload (i.e. the lead
	 *   element/subelement's header, and if applicable, the element's
	 *   element ID extension)
	 * - The number of max sized fragments (inclusive of the lead element)
	 * - The size of the smaller sized fragment at the end (non-zero if such
	 *   a fragment would be present, zero if it would be absent)
	 * - The number of extra header bytes that would be introduced (not
	 *   inclusive of the header of the lead fragment).
	 */

	if (!is_frag_required) {
		qdf_nofl_err("Pointer to indication of whether fragmentation is required or not is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	ret = wlan_get_elemunit_info(is_subelem,
				     0,
				     NULL,
				     &elemunit_hdrlen,
				     &elemunit_maxpayloadlen,
				     NULL,
				     NULL,
				     NULL);
	if (QDF_IS_STATUS_ERROR(ret)) {
		qdf_rl_nofl_err("Get elem unit info: Error %d",
				ret);
		return QDF_STATUS_E_FAILURE;
	}

	if (!is_subelem && (id == WLAN_ELEMID_EXTN_ELEM)) {
		if (payloadlen <= (elemunit_maxpayloadlen - 1)) {
			*is_frag_required = false;
			return QDF_STATUS_SUCCESS;
		}
	} else {
		if (payloadlen <= elemunit_maxpayloadlen) {
			*is_frag_required = false;
			return QDF_STATUS_SUCCESS;
		}
	}

	*is_frag_required = true;

	if (!expected_fragseqlen &&
	    !prepayload_leadbytes && !num_maxsizefrags &&
	    !smallerfrag_size && !extrahdrbytes)
		return QDF_STATUS_SUCCESS;

	tmp_expected_fragseqlen = 0;
	tmp_prepayload_leadbytes = 0;
	tmp_num_maxsizefrags = 0;
	tmp_smallerfrag_size = 0;
	tmp_extrahdrbytes = 0;

	/* As per the standard, the information to be fragmented is divided into
	 * M + N portions, where the following define each variable:
	 *
	 * I)For an element without an Element ID Extension field, or for a
	 * subelement:
	 * L is the size of the information in octets (this does not include the
	 * element/subelement header)
	 * M is L/255 floored
	 * N is equal to 1 if L mod 255 > 0 and equal to 0 otherwise.
	 * The size of each of the M fragments is 255 octets
	 * If N is 1, then the size of this single fragment is L mod 255 octets
	 *
	 * II) For an element with an Element ID Extension field:
	 * L is the size of the information in octets (this does not include the
	 * element header and the element ID extension field)
	 * M is (L + 1)/255 floored
	 * N is equal to 1 if (L - 254) mod 255 > 0 and equal to 0 otherwise.
	 * The size of each of the M fragments is 255 octets
	 * If N is 1, then the size of this single fragment is (L - 254) mod 255
	 * octets.
	 *
	 * For both I and II above, the mapping of code variables is as follows:
	 * payloadlen = L
	 * tmp_num_maxsizefrags = M
	 * tmp_smallerfrag_size = Size of N if N is 1, else 0
	 * Additionally, elemunit_maxpayloadlen is used to denote the value
	 * 255 for future extensibility if and when required.
	 */

	if (!is_subelem && (id == WLAN_ELEMID_EXTN_ELEM)) {
		tmp_num_maxsizefrags = (payloadlen + 1) /
						elemunit_maxpayloadlen;
		tmp_smallerfrag_size =
				(payloadlen - (elemunit_maxpayloadlen - 1)) %
						elemunit_maxpayloadlen;
	} else {
		tmp_num_maxsizefrags = payloadlen / elemunit_maxpayloadlen;
		tmp_smallerfrag_size = payloadlen %
						elemunit_maxpayloadlen;
	}

	/* Determine the number of extra bytes introduced due to the headers of
	 * non-leading fragments.
	 */
	tmp_extrahdrbytes = (tmp_num_maxsizefrags - 1) * elemunit_hdrlen;
	if (tmp_smallerfrag_size)
		tmp_extrahdrbytes += elemunit_hdrlen;

	if (!is_subelem && (id == WLAN_ELEMID_EXTN_ELEM))
		tmp_prepayload_leadbytes = elemunit_hdrlen + 1;
	else
		tmp_prepayload_leadbytes = elemunit_hdrlen;

	tmp_expected_fragseqlen = tmp_prepayload_leadbytes +
					payloadlen + tmp_extrahdrbytes;

	if (expected_fragseqlen)
		*expected_fragseqlen = tmp_expected_fragseqlen;

	if (prepayload_leadbytes)
		*prepayload_leadbytes = tmp_prepayload_leadbytes;

	if (num_maxsizefrags)
		*num_maxsizefrags = tmp_num_maxsizefrags;

	if (smallerfrag_size)
		*smallerfrag_size = tmp_smallerfrag_size;

	if (extrahdrbytes)
		*extrahdrbytes = tmp_extrahdrbytes;

	return QDF_STATUS_SUCCESS;
}

static QDF_STATUS
wlan_create_elemsubelem_fragseq(bool inline_frag,
				bool is_subelem,
				uint8_t id,
				uint8_t idext,
				uint8_t subelemfragid,
				uint8_t *payloadbuff,
				qdf_size_t payloadbuff_maxsize,
				qdf_size_t payloadlen,
				uint8_t *fragbuff,
				qdf_size_t fragbuff_maxsize,
				qdf_size_t *fragseqlen)
{
	/* elemunit, i.e. 'element unit' here refers to either an 802.11 element
	 * or a 802.11 subelement.
	 */
	uint8_t elemunit_fragid;
	qdf_size_t elemunit_hdrlen;
	qdf_size_t elemunit_maxpayloadlen;
	int elemunit_id_pos;
	int elemunit_len_pos;
	int elemunit_idext_pos;
	uint8_t *curr_elemunit_ptr;

	/* Whether fragmentation is required */
	bool is_frag_required;

	 /*Fragment sequence length (inclusive of payload and all headers) */
	qdf_size_t expected_fragseqlen;

	/* Number of fragments with the maximum size */
	uint32_t num_maxsizefrags;
	/* Size of the last fragment which is smaller than the maximum (if
	 * present). If such a fragment is not present, this size will be zero.
	 */
	qdf_size_t smallerfrag_size;

	 /* The number of extra header bytes that would be introduced (not
	  * inclusive of the header of the lead fragment).
	  */
	qdf_size_t extrahdrbytes;
	/* The number of extra header bytes remaining to be introduced */
	qdf_size_t extrahdrbytes_remaining;

	 /* The lead bytes that occur before the payload */
	qdf_size_t prepayload_leadbytes;

	 /* used for inline copy, the extra bytes needed in the payload buffer
	  * due to difference in destination and source.
	  * Note that the caller should ensure there is enough bytes beyond
	  * valid data until payloadbuff_maxsize*/
	qdf_size_t payloadbuff_shiftsize;

	/* Miscellaneous variables */
	uint8_t *src;
	uint8_t *dst;
	uint16_t i;
	qdf_size_t bytes_to_transfer;

	QDF_STATUS ret;

	/* Helper function to create an element or subelement fragment sequence.
	 * Refer to the documentation of the public APIs which call this helper,
	 * for more information. These APIs are mainly wrappers over this
	 * helper.
	 */

	ret = wlan_get_elemunit_info(is_subelem,
				     subelemfragid,
				     &elemunit_fragid,
				     &elemunit_hdrlen,
				     &elemunit_maxpayloadlen,
				     &elemunit_id_pos,
				     &elemunit_len_pos,
				     &elemunit_idext_pos);
	if (QDF_IS_STATUS_ERROR(ret)) {
		qdf_rl_nofl_err("Get elem unit info: Error %d",
				ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wlan_get_elemsubelem_fragseq_creationparams(is_subelem,
							  id,
							  payloadlen,
							  &is_frag_required,
							  &expected_fragseqlen,
							  &prepayload_leadbytes,
							  &num_maxsizefrags,
							  &smallerfrag_size,
							  &extrahdrbytes);
	if (QDF_IS_STATUS_ERROR(ret))
		return ret;

	if (!is_frag_required) {
		/* We treat this as an error since the caller is expected to
		 * have first determined requirements related to fragmentation,
		 * including whether fragmentation is required or not.
		 */
		if (!is_subelem && (id == WLAN_ELEMID_EXTN_ELEM))
			qdf_nofl_err("Fragmentation inapplicable for elem with elem ID ext and post elem ID ext payload len %zu",
				     payloadlen);
		else
			qdf_nofl_err("Fragmentation inapplicable for subelem/elem without elem ID ext and with payload len %zu",
				     payloadlen);

		return QDF_STATUS_E_INVAL;
	}

	if (!payloadbuff) {
		qdf_nofl_err("Payload buff is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (payloadbuff_maxsize == 0) {
		qdf_nofl_err("Payload buff max size is 0");
		return QDF_STATUS_E_INVAL;
	}

	if (payloadbuff_maxsize < payloadlen) {
		qdf_nofl_err("Payload buff max size %zu < payload len %zu",
			     payloadbuff_maxsize,
			     payloadlen);
		return QDF_STATUS_E_INVAL;
	}

	if (inline_frag) {
		if (payloadbuff_maxsize < expected_fragseqlen) {
			qdf_nofl_err("Inline frag buff max size %zu < frag sequence expected len %zu",
				     payloadbuff_maxsize,
				     expected_fragseqlen);
			return QDF_STATUS_E_INVAL;
		}
	} else {
		if (!fragbuff) {
			qdf_nofl_err("Frag sequence buff is NULL");
			return QDF_STATUS_E_NULL_VALUE;
		}

		if (fragbuff_maxsize == 0) {
			qdf_nofl_err("Frag sequence buff max size is 0");
			return QDF_STATUS_E_INVAL;
		}

		if (fragbuff_maxsize < expected_fragseqlen) {
			qdf_nofl_err("Frag sequence buff max size %zu < frag sequence expected len %zu",
				     fragbuff_maxsize,
				     expected_fragseqlen);
			return QDF_STATUS_E_INVAL;
		}
	}

	if (!fragseqlen) {
		qdf_nofl_err("Pointer to location of frag sequence len is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	/* Preferably, ensure that error checks (if any) for future changes are
	 * executed before this point. We wouldn't want to touch the destination
	 * buffer unless we are sure we can successfully execute (especially for
	 * the inline mode).
	 */

	/* We rely on wlan_get_elemsubelem_fragseq_creationparams() to give us
	 * sane values for extrahdrbytes and other parameters.
	 */

	extrahdrbytes_remaining = extrahdrbytes;

	/* We need to accommodate elemunit_hdrlen bytes for each non-leading
	 * fragment by moving the non-leading fragment to a higher location.
	 * Shift bytes and form fragment elements/subelements starting with the
	 * last fragment and going backwards from there.
	 */

	/* First move/copy the smaller sized fragment if present */
	if (smallerfrag_size) {
		/* The source for the copy/move is just after the end of all the
		 * max sized fragments (including the lead fragment). The
		 * element unit header is present for the lead fragment alone.
		 */
		src = payloadbuff + elemunit_hdrlen +
				(num_maxsizefrags * elemunit_maxpayloadlen);

		/* The destination for the copy/move is computed to reflect a
		 * shift by extrahdrbytes_remaining to accommodate the headers
		 * for the smaller fragment and all the non-lead max sized
		 * fragments.
		 */
		if (inline_frag)
			dst = src + extrahdrbytes_remaining;
		else
			dst = fragbuff + elemunit_hdrlen +
				(num_maxsizefrags * elemunit_maxpayloadlen) +
				extrahdrbytes_remaining;

		bytes_to_transfer = smallerfrag_size;

		/* Account for increased size due to shift in data */
		if (inline_frag && (dst > src))
			payloadbuff_shiftsize = (dst - src);
		else
			payloadbuff_shiftsize = 0;

		/* In the case of inline fragmentation, if the payload buffer
		 * has additional contents beyond the payload, include those
		 * contents in the move/copy.
		 */
		if (inline_frag &&
		    (payloadbuff_maxsize > (prepayload_leadbytes + payloadlen)))
			bytes_to_transfer += (payloadbuff_maxsize -
					      prepayload_leadbytes -
					      payloadlen -
					      payloadbuff_shiftsize);

		if (inline_frag)
			qdf_mem_move(dst, src, bytes_to_transfer);
		else
			qdf_mem_copy(dst, src, bytes_to_transfer);

		/* Copy/move of payload done. Set fragment ID and length in
		 * element unit header.
		 */
		curr_elemunit_ptr = dst - elemunit_hdrlen;
		curr_elemunit_ptr[elemunit_id_pos] = elemunit_fragid;
		curr_elemunit_ptr[elemunit_len_pos] = smallerfrag_size;

		extrahdrbytes_remaining -= elemunit_hdrlen;
	}

	/* Next, move/copy the non-lead max-sized fragments, if present.
	 * Fragments at higher memory locations are processed first.
	 */
	for (i = num_maxsizefrags; i > 1; i--) {
		/* Process the 'i'th max-sized fragment. The lead max-sized
		 * fragment has i=1 and is not processed in this 'for' loop.
		 * Also note that 'previous .* fragments' in comments for this
		 * 'for' loop refers to fragments in lower memory locations as
		 * compared to the current, i.e. 'i'th max-sized fragment.
		 */

		/* The source for the copy/move is just after the end of all the
		 * previous max-sized fragments (including the lead fragment).
		 * The element unit header is present for the lead fragment
		 * alone.
		 */
		src = payloadbuff + elemunit_hdrlen +
			((i - 1) * elemunit_maxpayloadlen);

		/* The destination for the copy/move is computed to reflect a
		 * shift by extrahdrbytes_remaining to accommodate the headers
		 * for the current non-lead max-sized fragment and all the
		 * previous max-sized non-lead fragments.
		 */
		if (inline_frag)
			dst = src + extrahdrbytes_remaining;
		else
			dst = fragbuff + elemunit_hdrlen +
				((i - 1) * elemunit_maxpayloadlen) +
				extrahdrbytes_remaining;

		bytes_to_transfer = elemunit_maxpayloadlen;

		/* Account for increased size due to shift in data */
		if (inline_frag && (dst > src))
			payloadbuff_shiftsize = (dst - src);
		else
			payloadbuff_shiftsize = 0;

		/* In the case of inline fragmentation, if this is the last
		 * non-lead max-sized fragment (i.e. at the highest memory
		 * location), if the payload buffer has additional contents
		 * beyond the payload, and these additional contents have not
		 * already been taken care of by the presence (and processing)
		 * of a smaller fragment, include the additional contents in the
		 * move/copy.
		 */
		if (inline_frag &&
		    (i == num_maxsizefrags) &&
		    (payloadbuff_maxsize > (prepayload_leadbytes +
					    payloadlen)) &&
			!smallerfrag_size)
			bytes_to_transfer += (payloadbuff_maxsize -
					      prepayload_leadbytes -
					      payloadlen -
					      payloadbuff_shiftsize);

		if (inline_frag)
			qdf_mem_move(dst, src, bytes_to_transfer);
		else
			qdf_mem_copy(dst, src, bytes_to_transfer);

		/* Copy/move of payload done. Set fragment ID and length in
		 * element unit header.
		 */
		curr_elemunit_ptr = dst - elemunit_hdrlen;
		curr_elemunit_ptr[elemunit_id_pos] = elemunit_fragid;
		curr_elemunit_ptr[elemunit_len_pos] = elemunit_maxpayloadlen;

		extrahdrbytes_remaining -= elemunit_hdrlen;
	}

	/* Update the element unit pointer for the lead max-sized fragment.
	 *
	 * Copy the payload of the lead max-sized fragment if inline
	 * fragmentation is not being used.
	 */
	if (inline_frag) {
		curr_elemunit_ptr = payloadbuff;
	} else {
		qdf_mem_copy(fragbuff + elemunit_hdrlen,
			     payloadbuff + elemunit_hdrlen,
			     elemunit_maxpayloadlen);
		curr_elemunit_ptr = fragbuff;
	}

	/* Set IDs and length in the header for the leading fragment */
	curr_elemunit_ptr[elemunit_id_pos] = id;
	curr_elemunit_ptr[elemunit_len_pos] = elemunit_maxpayloadlen;
	if (!is_subelem && (id == WLAN_ELEMID_EXTN_ELEM))
		curr_elemunit_ptr[elemunit_idext_pos] = idext;

	*fragseqlen = expected_fragseqlen;

	return QDF_STATUS_SUCCESS;
}

static inline QDF_STATUS
wlan_get_elemsubelem_successorfrag(bool is_subelem,
				   uint8_t subelemfragid,
				   uint8_t *curr_elemunit_ptr,
				   uint8_t *buff,
				   qdf_size_t buff_maxsize,
				   uint8_t **successorfrag,
				   qdf_size_t *successorfrag_totallen,
				   qdf_size_t *successorfrag_payloadlen)
{
	/* elemunit, i.e. 'element unit' here refers to either an 802.11 element
	 * or a 802.11 subelement.
	 */
	uint8_t elemunit_fragid;
	qdf_size_t elemunit_hdrlen;
	qdf_size_t elemunit_maxpayloadlen;
	int elemunit_id_pos;
	int elemunit_len_pos;

	qdf_size_t curr_elemunit_totallen;

	uint8_t *next_elemunit_ptr;
	qdf_size_t next_elemunit_totallen;

	QDF_STATUS ret;

	/* This helper checks if the very next element unit after the current
	 * one is a valid fragment element unit and that there is sufficient
	 * space in the buffer for this next element, and if so, it returns a
	 * pointer to this fragment element unit as well as the total length of
	 * this fragment element unit and the length of the payload of this
	 * fragment element unit.
	 */

	ret = wlan_get_elemunit_info(is_subelem,
				     subelemfragid,
				     &elemunit_fragid,
				     &elemunit_hdrlen,
				     &elemunit_maxpayloadlen,
				     &elemunit_id_pos,
				     &elemunit_len_pos,
				     NULL);
	if (QDF_IS_STATUS_ERROR(ret)) {
		qdf_rl_nofl_err("Get elem unit info: Error %d",
				ret);
		return QDF_STATUS_E_FAILURE;
	}

	if (!curr_elemunit_ptr) {
		qdf_nofl_err("Ptr to curr elem unit is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (!buff) {
		qdf_nofl_err("Elem unit buff is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (buff_maxsize == 0) {
		qdf_nofl_err("Max size of elem unit buff is 0");
		return QDF_STATUS_E_INVAL;
	}

	if (!successorfrag) {
		qdf_nofl_err("Double ptr to successor frag is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (!successorfrag_totallen) {
		qdf_nofl_err("Ptr to successor frag total len is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (!successorfrag_payloadlen) {
		qdf_nofl_err("Ptr to successor frag payload len is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if ((buff + buff_maxsize) < (curr_elemunit_ptr + elemunit_hdrlen)) {
		qdf_rl_nofl_err("(Space %zu after curr elem unit offset %zu in elem unit buff) < (header size of elem unit %zu)",
				buff_maxsize - (curr_elemunit_ptr - buff),
				curr_elemunit_ptr - buff,
				elemunit_hdrlen);
		return QDF_STATUS_E_PROTO;
	}

	curr_elemunit_totallen =
		elemunit_hdrlen + curr_elemunit_ptr[elemunit_len_pos];

	if ((buff + buff_maxsize) <
		(curr_elemunit_ptr + curr_elemunit_totallen)) {
		qdf_rl_nofl_err("(Space %zu after curr elem unit offset %zu in elem unit buff) < (indicated total len of elem unit %zu)",
				buff_maxsize - (curr_elemunit_ptr - buff),
				curr_elemunit_ptr - buff,
				curr_elemunit_totallen);
		return QDF_STATUS_E_PROTO;
	}

	if ((buff + buff_maxsize) ==
		(curr_elemunit_ptr + curr_elemunit_totallen)) {
		/* We have reached the end of the buffer. There is no successor
		 * fragment.
		 */
		*successorfrag = NULL;
		return QDF_STATUS_SUCCESS;
	}

	next_elemunit_ptr = curr_elemunit_ptr + curr_elemunit_totallen;

	if ((buff + buff_maxsize) < (next_elemunit_ptr + elemunit_hdrlen)) {
		qdf_rl_nofl_err("(Space %zu after next elem unit offset %zu in elem unit buff) < (header size of elem unit %zu)",
				buff_maxsize - (next_elemunit_ptr - buff),
				next_elemunit_ptr - buff,
				elemunit_hdrlen);
		return QDF_STATUS_E_PROTO;
	}

	next_elemunit_totallen =
		elemunit_hdrlen + next_elemunit_ptr[elemunit_len_pos];

	if ((buff + buff_maxsize) <
		(next_elemunit_ptr + next_elemunit_totallen)) {
		qdf_rl_nofl_err("(Space %zu after next elem unit offset %zu in elem unit buff) < (indicated total len of elem unit %zu)",
				buff_maxsize - (next_elemunit_ptr - buff),
				next_elemunit_ptr - buff,
				next_elemunit_totallen);
		return QDF_STATUS_E_PROTO;
	}

	if (next_elemunit_ptr[elemunit_id_pos] != elemunit_fragid) {
		*successorfrag = NULL;
		return QDF_STATUS_SUCCESS;
	}

	/* We should not be seeing a successor fragment if the length of the
	 * current element unit is lesser than the max.
	 */
	if (curr_elemunit_ptr[elemunit_len_pos] != elemunit_maxpayloadlen) {
		qdf_rl_nofl_err("Potential successor frag found though (len %u of payload of curr elem unit) != (max payload len %zu)",
				curr_elemunit_ptr[elemunit_len_pos],
				elemunit_maxpayloadlen);
		return QDF_STATUS_E_PROTO;
	}

	if (next_elemunit_ptr[elemunit_len_pos] == 0) {
		qdf_rl_nofl_err("Potential successor frag len is 0");
		return QDF_STATUS_E_PROTO;
	}

	*successorfrag = next_elemunit_ptr;
	*successorfrag_totallen = next_elemunit_totallen;
	*successorfrag_payloadlen = next_elemunit_ptr[elemunit_len_pos];

	return QDF_STATUS_SUCCESS;
}

static QDF_STATUS
wlan_get_elemsubelem_fragseq_info(bool is_subelem,
				  uint8_t subelemfragid,
				  uint8_t *buff,
				  qdf_size_t buff_maxsize,
				  bool *is_fragseq,
				  qdf_size_t *fragseq_totallen,
				  qdf_size_t *fragseq_payloadlen)
{
	/* elemunit, i.e. 'element unit' here refers to either an 802.11 element
	 * or a 802.11 subelement.
	 */
	qdf_size_t elemunit_hdrlen;
	int elemunit_id_pos;
	int elemunit_len_pos;

	uint8_t *curr_elemunit_ptr;
	qdf_size_t curr_elemunit_totallen;

	qdf_size_t fragseq_currtotallen;
	qdf_size_t fragseq_currpayloadlen;

	uint8_t *successorfrag;
	qdf_size_t successorfrag_totallen;
	qdf_size_t successorfrag_payloadlen;

	QDF_STATUS ret;

	/* Helper function to get element or subelement fragment sequence
	 * information. Refer to the documentation of the public APIs which
	 * call this helper, for more information. These APIs are mainly
	 * wrappers over this helper.
	 *
	 * If this helper reports that an element fragment sequence is present,
	 * it also serves to check for the sanity of various lengths and
	 * protocol requirements related to the fragment sequence (either by
	 * itself or though other helpers).
	 */

	ret = wlan_get_elemunit_info(is_subelem,
				     0,
				     NULL,
				     &elemunit_hdrlen,
				     NULL,
				     &elemunit_id_pos,
				     &elemunit_len_pos,
				     NULL);
	if (QDF_IS_STATUS_ERROR(ret)) {
		qdf_rl_nofl_err("Get elem unit info: Error %d",
				ret);
		return QDF_STATUS_E_FAILURE;
	}

	if (!buff) {
		qdf_nofl_err("Elem unit buff is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (buff_maxsize == 0) {
		qdf_nofl_err("Max size of elem unit buff is 0");
		return QDF_STATUS_E_INVAL;
	}

	if (!is_fragseq) {
		qdf_nofl_err("Ptr to status of frag seq presence is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (!fragseq_totallen) {
		qdf_nofl_err("Ptr to total len of frag seq is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (!fragseq_payloadlen) {
		qdf_nofl_err("Ptr to payload len of frag seq is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	curr_elemunit_ptr = buff;
	fragseq_currtotallen = 0;
	fragseq_currpayloadlen = 0;

	if ((buff + buff_maxsize) < (curr_elemunit_ptr + elemunit_hdrlen)) {
		qdf_rl_nofl_err("(Space %zu after curr elem unit offset %zu in elem unit buff) < (header size of elem unit %zu)",
				buff_maxsize - (curr_elemunit_ptr - buff),
				curr_elemunit_ptr - buff,
				elemunit_hdrlen);
		return QDF_STATUS_E_PROTO;
	}

	curr_elemunit_totallen =
		elemunit_hdrlen + curr_elemunit_ptr[elemunit_len_pos];

	if ((buff + buff_maxsize) <
		(curr_elemunit_ptr + curr_elemunit_totallen)) {
		qdf_rl_nofl_err("(Space %zu after curr elem unit offset %zu in elem unit buff) < (indicated total len of elem unit %zu)",
				buff_maxsize - (curr_elemunit_ptr - buff),
				curr_elemunit_ptr - buff,
				curr_elemunit_totallen);
		return QDF_STATUS_E_PROTO;
	}

	successorfrag = NULL;

	ret = wlan_get_elemsubelem_successorfrag(is_subelem,
						 subelemfragid,
						 curr_elemunit_ptr,
						 buff,
						 buff_maxsize,
						 &successorfrag,
						 &successorfrag_totallen,
						 &successorfrag_payloadlen);
	if (QDF_IS_STATUS_ERROR(ret))
		return ret;

	if (!successorfrag) {
		*is_fragseq = false;
		*fragseq_totallen = 0;
		*fragseq_payloadlen = 0;
		return QDF_STATUS_SUCCESS;
	}

	fragseq_currtotallen += curr_elemunit_totallen;

	if (!is_subelem &&
	    (curr_elemunit_ptr[elemunit_id_pos] == WLAN_ELEMID_EXTN_ELEM)) {
		fragseq_currpayloadlen +=
			(curr_elemunit_ptr[elemunit_len_pos] - 1);
	} else {
		fragseq_currpayloadlen +=
			curr_elemunit_ptr[elemunit_len_pos];
	}

	while (successorfrag) {
		/* wlan_get_elemsubelem_successorfrag() has already validated
		 * the length values for the successor fragment.
		 */
		fragseq_currtotallen += successorfrag_totallen;
		fragseq_currpayloadlen += successorfrag_payloadlen;

		curr_elemunit_ptr = successorfrag;
		successorfrag = NULL;

		ret = wlan_get_elemsubelem_successorfrag(is_subelem,
							 subelemfragid,
							 curr_elemunit_ptr,
							 buff,
							 buff_maxsize,
							 &successorfrag,
							 &successorfrag_totallen,
							 &successorfrag_payloadlen);
		if (QDF_IS_STATUS_ERROR(ret))
			return ret;
	}

	*is_fragseq = true;
	*fragseq_totallen = fragseq_currtotallen;
	*fragseq_payloadlen = fragseq_currpayloadlen;

	return QDF_STATUS_SUCCESS;
}

static QDF_STATUS wlan_defrag_elemsubelem_fragseq(bool inline_defrag,
						  bool is_subelem,
						  uint8_t subelemfragid,
						  uint8_t *fragbuff,
						  qdf_size_t fragbuff_maxsize,
						  uint8_t *defragbuff,
						  qdf_size_t defragbuff_maxsize,
						  qdf_size_t *defragpayload_len)
{
	/* elemunit, i.e. 'element unit' here refers to either an 802.11 element
	 * or a 802.11 subelement.
	 */
	uint8_t elemunit_fragid;
	qdf_size_t elemunit_hdrlen;
	int elemunit_id_pos;
	int elemunit_len_pos;
	int elemunit_idext_pos;

	bool is_fragseq;
	qdf_size_t fragseq_totallen;
	qdf_size_t fragseq_payloadlen;

	uint8_t *curr_elemunit_ptr;
	qdf_size_t curr_elemunit_payloadlen;
	qdf_size_t curr_elemunit_totallen;

	uint8_t *src;
	uint8_t *dst;

	/* Current length of the defragmented payload */
	qdf_size_t defragpayload_currlen;

	/* Remaining length available in the source buffer containing the
	 * fragment sequence, after element units processed so far.
	 */
	qdf_size_t fragbuff_remlen;

	QDF_STATUS ret;

	/* Helper function to de-fragment element or subelement fragment
	 * sequence. Refer to the documentation of the public APIs which call
	 * this helper, for more information. Those APIs are mainly wrappers
	 * over this helper.
	 */

	ret = wlan_get_elemunit_info(is_subelem,
				     subelemfragid,
				     &elemunit_fragid,
				     &elemunit_hdrlen,
				     NULL,
				     &elemunit_id_pos,
				     &elemunit_len_pos,
				     &elemunit_idext_pos);
	if (QDF_IS_STATUS_ERROR(ret)) {
		qdf_rl_nofl_err("Get elem unit info: Error %d",
				ret);
		return QDF_STATUS_E_FAILURE;
	}

	if (!fragbuff) {
		qdf_nofl_err("Src buff for frag seq is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	if (fragbuff_maxsize == 0) {
		qdf_nofl_err("Size of src buff for frag seq is 0");
		return QDF_STATUS_E_INVAL;
	}

	if (!inline_defrag) {
		if (!defragbuff) {
			qdf_nofl_err("Dest buff for defragged payload is NULL");
			return QDF_STATUS_E_NULL_VALUE;
		}

		if (defragbuff_maxsize == 0) {
			qdf_nofl_err("Size of dest buff for defragged payload is 0");
			return QDF_STATUS_E_INVAL;
		}
	}

	if (!defragpayload_len) {
		qdf_nofl_err("Ptr to len of defragged payload is NULL");
		return QDF_STATUS_E_NULL_VALUE;
	}

	ret = wlan_get_elemsubelem_fragseq_info(is_subelem,
						subelemfragid,
						fragbuff,
						fragbuff_maxsize,
						&is_fragseq,
						&fragseq_totallen,
						&fragseq_payloadlen);
	if (QDF_IS_STATUS_ERROR(ret))
		return ret;

	if (!is_fragseq) {
		/* We treat this as an error since the caller is supposed to
		 * check this.
		 */
		qdf_rl_nofl_err("Frag seq not found at start of src buff for frag seq");
		return QDF_STATUS_E_INVAL;
	}

	/* fragseq_totallen is known to be smaller than or equal to
	 * fragbuff_maxsize since wlan_get_elemsubelem_fragseq_info() is bound
	 * by fragbuff_maxsize in the search for a fragment sequence and it's
	 * total length.
	 */

	if (!inline_defrag && (defragbuff_maxsize < fragseq_payloadlen)) {
		qdf_rl_nofl_err("(Size of dest buff for defragged payload %zu) < (size of frag seq payload %zu)",
				defragbuff_maxsize, fragseq_payloadlen);
		return QDF_STATUS_E_INVAL;
	}

	defragpayload_currlen = 0;
	fragbuff_remlen = fragbuff_maxsize;

	/* We have already validated through wlan_get_elemsubelem_fragseq_info()
	 * that the elements we are about to access below are within the bounds
	 * of fragbuff.
	 */

	curr_elemunit_ptr = fragbuff;

	if (!is_subelem &&
	    (curr_elemunit_ptr[elemunit_id_pos] == WLAN_ELEMID_EXTN_ELEM)) {
		curr_elemunit_payloadlen =
			curr_elemunit_ptr[elemunit_len_pos] - 1;
		src = curr_elemunit_ptr + elemunit_hdrlen + 1;
	} else {
		curr_elemunit_payloadlen = curr_elemunit_ptr[elemunit_len_pos];
		src = curr_elemunit_ptr + elemunit_hdrlen;
	}

	curr_elemunit_totallen =
		elemunit_hdrlen + curr_elemunit_ptr[elemunit_len_pos];

	if (inline_defrag) {
		/* There is no need to move any bytes in the lead element. Set
		 * dst=src so that the next update for dst can happen in a
		 * manner uniform with the non-inlined defrag case.
		 */
		dst = src;
	} else {
		dst = defragbuff;
		qdf_mem_copy(dst, src, curr_elemunit_payloadlen);
	}

	defragpayload_currlen += curr_elemunit_payloadlen;

	fragbuff_remlen -= curr_elemunit_totallen;

	dst += curr_elemunit_payloadlen;

	curr_elemunit_ptr += curr_elemunit_totallen;

	/* We have already validated through wlan_get_elemsubelem_fragseq_info()
	 * that at least one non-lead fragment element is present as required in
	 * the standard.
	 */
	while (curr_elemunit_ptr[elemunit_id_pos] == elemunit_fragid) {
		curr_elemunit_payloadlen = curr_elemunit_ptr[elemunit_len_pos];
		curr_elemunit_totallen =
			elemunit_hdrlen + curr_elemunit_ptr[elemunit_len_pos];
		src = curr_elemunit_ptr + elemunit_hdrlen;

		if (inline_defrag)
			qdf_mem_move(dst, src, curr_elemunit_payloadlen);
		else
			qdf_mem_copy(dst, src, curr_elemunit_payloadlen);

		defragpayload_currlen += curr_elemunit_payloadlen;

		fragbuff_remlen -= curr_elemunit_totallen;

		if (fragbuff_remlen == 0)
			break;

		dst += curr_elemunit_payloadlen;

		curr_elemunit_ptr += curr_elemunit_totallen;
	}

	if (inline_defrag && (fragbuff_remlen != 0)) {
		/* Move the residual content after the fragments, in the source
		 * buffer.
		 */
		src = curr_elemunit_ptr;
		qdf_mem_move(dst, src, fragbuff_remlen);
	}

	*defragpayload_len = defragpayload_currlen;

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS
wlan_get_elem_fragseq_requirements(uint8_t elemid,
				   qdf_size_t payloadlen,
				   bool *is_frag_required,
				   qdf_size_t *required_fragbuff_size)
{
	return wlan_get_elemsubelem_fragseq_creationparams(false,
							   elemid,
							   payloadlen,
							   is_frag_required,
							   required_fragbuff_size,
							   NULL,
							   NULL,
							   NULL,
							   NULL);
}

QDF_STATUS wlan_create_elem_fragseq(bool inline_frag,
				    uint8_t elemid,
				    uint8_t elemidext,
				    uint8_t *payloadbuff,
				    qdf_size_t payloadbuff_maxsize,
				    qdf_size_t payloadlen,
				    uint8_t *fragbuff,
				    qdf_size_t fragbuff_maxsize,
				    qdf_size_t *fragseqlen)
{
	return  wlan_create_elemsubelem_fragseq(inline_frag,
						false,
						elemid,
						elemidext,
						0,
						payloadbuff,
						payloadbuff_maxsize,
						payloadlen,
						fragbuff,
						fragbuff_maxsize,
						fragseqlen);
}

QDF_STATUS
wlan_get_subelem_fragseq_requirements(uint8_t subelemid,
				      qdf_size_t payloadlen,
				      bool *is_frag_required,
				      qdf_size_t *required_fragbuff_size)
{
	return wlan_get_elemsubelem_fragseq_creationparams(true,
							   subelemid,
							   payloadlen,
							   is_frag_required,
							   required_fragbuff_size,
							   NULL,
							   NULL,
							   NULL,
							   NULL);
}

QDF_STATUS wlan_create_subelem_fragseq(bool inline_frag,
				       uint8_t subelemid,
				       uint8_t subelemfragid,
				       uint8_t *payloadbuff,
				       qdf_size_t payloadbuff_maxsize,
				       qdf_size_t payloadlen,
				       uint8_t *fragbuff,
				       qdf_size_t fragbuff_maxsize,
				       qdf_size_t *fragseqlen)
{
	return  wlan_create_elemsubelem_fragseq(inline_frag,
						true,
						subelemid,
						0,
						subelemfragid,
						payloadbuff,
						payloadbuff_maxsize,
						payloadlen,
						fragbuff,
						fragbuff_maxsize,
						fragseqlen);
}

QDF_STATUS wlan_get_elem_fragseq_info(uint8_t *elembuff,
				      qdf_size_t elembuff_maxsize,
				      bool *is_fragseq,
				      qdf_size_t *fragseq_totallen,
				      qdf_size_t *fragseq_payloadlen)
{
	return wlan_get_elemsubelem_fragseq_info(false,
						 0,
						 elembuff,
						 elembuff_maxsize,
						 is_fragseq,
						 fragseq_totallen,
						 fragseq_payloadlen);
}

QDF_STATUS wlan_defrag_elem_fragseq(bool inline_defrag,
				    uint8_t *fragbuff,
				    qdf_size_t fragbuff_maxsize,
				    uint8_t *defragbuff,
				    qdf_size_t defragbuff_maxsize,
				    qdf_size_t *defragpayload_len)
{
	return wlan_defrag_elemsubelem_fragseq(inline_defrag,
					       false,
					       0,
					       fragbuff,
					       fragbuff_maxsize,
					       defragbuff,
					       defragbuff_maxsize,
					       defragpayload_len);
}

QDF_STATUS wlan_get_subelem_fragseq_info(uint8_t subelemfragid,
					 uint8_t *subelembuff,
					 qdf_size_t subelembuff_maxsize,
					 bool *is_fragseq,
					 qdf_size_t *fragseq_totallen,
					 qdf_size_t *fragseq_payloadlen)
{
	return wlan_get_elemsubelem_fragseq_info(true,
						 subelemfragid,
						 subelembuff,
						 subelembuff_maxsize,
						 is_fragseq,
						 fragseq_totallen,
						 fragseq_payloadlen);
}

QDF_STATUS wlan_defrag_subelem_fragseq(bool inline_defrag,
				       uint8_t subelemfragid,
				       uint8_t *fragbuff,
				       qdf_size_t fragbuff_maxsize,
				       uint8_t *defragbuff,
				       qdf_size_t defragbuff_maxsize,
				       qdf_size_t *defragpayload_len)
{
	return wlan_defrag_elemsubelem_fragseq(inline_defrag,
					       true,
					       subelemfragid,
					       fragbuff,
					       fragbuff_maxsize,
					       defragbuff,
					       defragbuff_maxsize,
					       defragpayload_len);
}

bool wlan_is_emulation_platform(uint32_t phy_version)
{
	if ((phy_version == 0xABC0) || (phy_version == 0xABC1) ||
		(phy_version == 0xABC2) || (phy_version == 0xABC3) ||
		(phy_version == 0xFFFF) || (phy_version == 0xABCD))
		return true;

	return false;
}

uint32_t wlan_get_pdev_id_from_vdev_id(struct wlan_objmgr_psoc *psoc,
				      uint8_t vdev_id,
				      wlan_objmgr_ref_dbgid dbg_id)
{
	struct wlan_objmgr_vdev *vdev;
	struct wlan_objmgr_pdev *pdev = NULL;
	uint32_t pdev_id = WLAN_INVALID_PDEV_ID;

	vdev = wlan_objmgr_get_vdev_by_id_from_psoc(psoc,
						    vdev_id, dbg_id);

	if (vdev) {
		pdev = wlan_vdev_get_pdev(vdev);
		if (pdev)
			pdev_id = wlan_objmgr_pdev_get_pdev_id(pdev);
		wlan_objmgr_vdev_release_ref(vdev, dbg_id);
	}

	return pdev_id;
}
qdf_export_symbol(wlan_get_pdev_id_from_vdev_id);

static void wlan_vdev_active(struct wlan_objmgr_pdev *pdev, void *object,
			     void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	uint8_t *flag = (uint8_t *)arg;

	wlan_vdev_obj_lock(vdev);
	if (wlan_vdev_mlme_is_active(vdev) == QDF_STATUS_SUCCESS)
		*flag = 1;

	wlan_vdev_obj_unlock(vdev);
}

QDF_STATUS wlan_vdev_is_up(struct wlan_objmgr_vdev *vdev)
{
	return wlan_vdev_allow_connect_n_tx(vdev);
}
qdf_export_symbol(wlan_vdev_is_up);

QDF_STATUS wlan_util_is_vdev_active(struct wlan_objmgr_pdev *pdev,
				    wlan_objmgr_ref_dbgid dbg_id)
{
	uint8_t flag = 0;

	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP, wlan_vdev_active,
					  &flag, 0, dbg_id);

	if (flag == 1)
		return QDF_STATUS_SUCCESS;

	return QDF_STATUS_E_INVAL;
}

qdf_export_symbol(wlan_util_is_vdev_active);

void wlan_util_change_map_index(unsigned long *map, uint8_t id, uint8_t set)
{
	if (set)
		qdf_set_bit(id, map);
	else
		qdf_clear_bit(id, map);
}

bool wlan_util_map_index_is_set(unsigned long *map, uint8_t id)
{
	return qdf_test_bit(id, map);
}

bool wlan_util_map_is_any_index_set(unsigned long *map, unsigned long nbytes)
{
	return !qdf_bitmap_empty(map, QDF_CHAR_BIT * nbytes);
}

static void wlan_vdev_chan_change_pending(struct wlan_objmgr_pdev *pdev,
					  void *object, void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	unsigned long *vdev_id_map = (unsigned long *)arg;
	uint8_t id = 0;
	struct wlan_objmgr_psoc *psoc;

	psoc = wlan_pdev_get_psoc(pdev);
	if (!psoc)
		return;

	wlan_vdev_obj_lock(vdev);
	if (wlan_vdev_chan_config_valid(vdev) == QDF_STATUS_SUCCESS) {
		id = wlan_vdev_get_id(vdev);
		/* Invalid vdev id */
		if (id >= wlan_psoc_get_max_vdev_count(psoc)) {
			wlan_vdev_obj_unlock(vdev);
			return;
		}

		wlan_util_change_map_index(vdev_id_map, id, 1);
	}

	wlan_vdev_obj_unlock(vdev);
}

QDF_STATUS wlan_pdev_chan_change_pending_vdevs(struct wlan_objmgr_pdev *pdev,
					       unsigned long *vdev_id_map,
					       wlan_objmgr_ref_dbgid dbg_id)
{
	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
					  wlan_vdev_chan_change_pending,
					  vdev_id_map, 0, dbg_id);

	return QDF_STATUS_SUCCESS;
}

static void wlan_vdev_down_pending(struct wlan_objmgr_pdev *pdev,
				   void *object, void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	unsigned long *vdev_id_map = (unsigned long *)arg;
	uint8_t id = 0;
	struct wlan_objmgr_psoc *psoc;
	enum wlan_serialization_cmd_type cmd_type;

	psoc = wlan_pdev_get_psoc(pdev);
	if (!psoc)
		return;

	cmd_type = wlan_serialization_get_vdev_active_cmd_type(vdev);
	wlan_vdev_obj_lock(vdev);
	if ((wlan_vdev_mlme_is_init_state(vdev) != QDF_STATUS_SUCCESS) ||
	    (cmd_type == WLAN_SER_CMD_VDEV_START_BSS)) {
		id = wlan_vdev_get_id(vdev);
		/* Invalid vdev id */
		if (id >= wlan_psoc_get_max_vdev_count(psoc)) {
			wlan_vdev_obj_unlock(vdev);
			return;
		}
		wlan_util_change_map_index(vdev_id_map, id, 1);
	}

	wlan_vdev_obj_unlock(vdev);
}

static void wlan_vdev_ap_down_pending(struct wlan_objmgr_pdev *pdev,
				      void *object, void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	unsigned long *vdev_id_map = (unsigned long *)arg;
	uint8_t id = 0;
	struct wlan_objmgr_psoc *psoc;
	enum wlan_serialization_cmd_type cmd_type;

	psoc = wlan_pdev_get_psoc(pdev);
	if (!psoc)
		return;

	if (wlan_vdev_mlme_get_opmode(vdev) != QDF_SAP_MODE)
		return;

	cmd_type = wlan_serialization_get_vdev_active_cmd_type(vdev);
	wlan_vdev_obj_lock(vdev);
	if ((wlan_vdev_mlme_is_init_state(vdev) != QDF_STATUS_SUCCESS) ||
	    (cmd_type == WLAN_SER_CMD_VDEV_START_BSS)) {
		id = wlan_vdev_get_id(vdev);
		/* Invalid vdev id */
		if (id >= wlan_psoc_get_max_vdev_count(psoc)) {
			wlan_vdev_obj_unlock(vdev);
			return;
		}
		wlan_util_change_map_index(vdev_id_map, id, 1);
	}

	wlan_vdev_obj_unlock(vdev);
}

QDF_STATUS wlan_pdev_chan_change_pending_vdevs_down(
					struct wlan_objmgr_pdev *pdev,
					unsigned long *vdev_id_map,
					wlan_objmgr_ref_dbgid dbg_id)
{
	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
					  wlan_vdev_down_pending,
					  vdev_id_map, 0, dbg_id);

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS wlan_pdev_chan_change_pending_ap_vdevs_down(
						struct wlan_objmgr_pdev *pdev,
						unsigned long *vdev_id_map,
						wlan_objmgr_ref_dbgid dbg_id)
{
	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
					  wlan_vdev_ap_down_pending,
					  vdev_id_map, 0, dbg_id);

	return QDF_STATUS_SUCCESS;
}

#ifdef WLAN_FEATURE_11BE
static inline bool
wlan_chan_puncture_eq(struct wlan_channel *chan1, struct wlan_channel *chan2)
{
	if (chan1->puncture_bitmap == chan2->puncture_bitmap)
		return true;

	return false;
}
#else
static inline bool
wlan_chan_puncture_eq(struct wlan_channel *chan1, struct wlan_channel *chan2)
{
	return true;
}
#endif /* WLAN_FEATURE_11BE */

QDF_STATUS wlan_chan_eq(struct wlan_channel *chan1, struct wlan_channel *chan2)
{
	if ((chan1->ch_ieee == chan2->ch_ieee) &&
	    (chan1->ch_freq_seg2 == chan2->ch_freq_seg2) &&
	    wlan_chan_puncture_eq(chan1, chan2))
		return QDF_STATUS_SUCCESS;

	return QDF_STATUS_E_FAILURE;
}

void wlan_chan_copy(struct wlan_channel *tgt, struct wlan_channel *src)
{
	qdf_mem_copy(tgt, src, sizeof(struct wlan_channel));
}

struct wlan_channel *wlan_vdev_get_active_channel(struct wlan_objmgr_vdev *vdev)
{
	struct wlan_channel *comp_vdev_chan = NULL;

	if (wlan_vdev_chan_config_valid(vdev) == QDF_STATUS_SUCCESS) {
		/* compare with BSS channel, when vdev is active, since desired
		 * channel gets update, if channel is triggered in another path
		 */
		if (wlan_vdev_mlme_is_active(vdev) == QDF_STATUS_SUCCESS)
			comp_vdev_chan = wlan_vdev_mlme_get_bss_chan(vdev);
		else
			comp_vdev_chan = wlan_vdev_mlme_get_des_chan(vdev);
	}

	return comp_vdev_chan;
}

/**
 * struct wlan_check_bssid_context - bssid check context
 * @bssid: bssid to be checked
 * @connected: connected by vdev or not
 * @vdev_id: vdev id of connected vdev
 */
struct wlan_check_bssid_context {
	struct qdf_mac_addr bssid;
	bool connected;
	uint8_t vdev_id;
};

/**
 * wlan_get_connected_vdev_handler() - check vdev connected on bssid
 * @psoc: psoc object
 * @obj: vdev object
 * @args: handler context
 *
 * This function will check whether vdev is connected on bssid or not and
 * update the result to handler context accordingly.
 *
 * Return: void
 */
static void wlan_get_connected_vdev_handler(struct wlan_objmgr_psoc *psoc,
					    void *obj, void *args)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)obj;
	struct wlan_check_bssid_context *context =
				(struct wlan_check_bssid_context *)args;
	struct qdf_mac_addr bss_peer_mac;
	enum QDF_OPMODE op_mode;

	if (context->connected)
		return;
	op_mode = wlan_vdev_mlme_get_opmode(vdev);
	if (op_mode != QDF_STA_MODE && op_mode != QDF_P2P_CLIENT_MODE)
		return;
	if (wlan_vdev_is_up(vdev) != QDF_STATUS_SUCCESS)
		return;
	if (wlan_vdev_get_bss_peer_mac(vdev, &bss_peer_mac) !=
	    QDF_STATUS_SUCCESS)
		return;
	if (qdf_is_macaddr_equal(&bss_peer_mac, &context->bssid)) {
		context->connected = true;
		context->vdev_id = wlan_vdev_get_id(vdev);
	}
}

bool wlan_get_connected_vdev_from_psoc_by_bssid(struct wlan_objmgr_psoc *psoc,
						uint8_t *bssid,
						uint8_t *vdev_id)
{
	struct wlan_check_bssid_context context;

	qdf_mem_zero(&context, sizeof(struct wlan_check_bssid_context));
	qdf_mem_copy(context.bssid.bytes, bssid, QDF_MAC_ADDR_SIZE);
	wlan_objmgr_iterate_obj_list(psoc, WLAN_VDEV_OP,
				     wlan_get_connected_vdev_handler,
				     &context, true, WLAN_OSIF_SCAN_ID);
	if (context.connected)
		*vdev_id = context.vdev_id;

	return context.connected;
}

qdf_export_symbol(wlan_get_connected_vdev_from_psoc_by_bssid);

bool wlan_get_connected_vdev_by_bssid(struct wlan_objmgr_pdev *pdev,
				      uint8_t *bssid, uint8_t *vdev_id)
{
	return wlan_get_connected_vdev_from_psoc_by_bssid(
			wlan_pdev_get_psoc(pdev), bssid, vdev_id);
}

qdf_export_symbol(wlan_get_connected_vdev_by_bssid);

#ifdef WLAN_FEATURE_11BE_MLO
/**
 * struct wlan_check_mld_addr_context - mld mac addr check context
 * @mld_addr: mld_addrto be checked
 * @connected: connected by vdev or not
 * @vdev_id: vdev id of connected vdev
 */
struct wlan_check_mld_addr_context {
	struct qdf_mac_addr mld_addr;
	bool connected;
	uint8_t vdev_id;
};

/**
 * wlan_get_connected_mlo_dev_ctx_handler() - check vdev connected on mld mac
 * @psoc: psoc object
 * @obj: vdev object
 * @args: handler context
 *
 * This function will check whether vdev is connected on mld mac or not and
 * update the result to handler context accordingly.
 *
 * Return: void
 */
static void wlan_get_connected_mlo_dev_ctx_handler(
			struct wlan_objmgr_psoc *psoc,
			void *obj, void *args)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)obj;
	struct wlan_check_mld_addr_context *context =
				(struct wlan_check_mld_addr_context *)args;
	struct qdf_mac_addr bss_peer_mld_mac;
	enum QDF_OPMODE op_mode;

	if (context->connected)
		return;
	op_mode = wlan_vdev_mlme_get_opmode(vdev);
	if (op_mode != QDF_STA_MODE && op_mode != QDF_P2P_CLIENT_MODE)
		return;
	if (wlan_vdev_is_up(vdev) != QDF_STATUS_SUCCESS)
		return;
	if (QDF_IS_STATUS_ERROR(wlan_vdev_get_bss_peer_mld_mac(
					vdev, &bss_peer_mld_mac)))
		return;
	if (qdf_is_macaddr_equal(&bss_peer_mld_mac, &context->mld_addr)) {
		context->connected = true;
		context->vdev_id = wlan_vdev_get_id(vdev);
	}
}

bool wlan_get_connected_vdev_by_mld_addr(struct wlan_objmgr_psoc *psoc,
					 uint8_t *mld_mac, uint8_t *vdev_id)
{
	struct wlan_check_mld_addr_context context;

	qdf_mem_zero(&context, sizeof(struct wlan_check_mld_addr_context));
	qdf_copy_macaddr(&context.mld_addr, (struct qdf_mac_addr *)mld_mac);
	wlan_objmgr_iterate_obj_list(psoc, WLAN_VDEV_OP,
				     wlan_get_connected_mlo_dev_ctx_handler,
				     &context, true, WLAN_MLME_OBJMGR_ID);

	if (context.connected)
		*vdev_id = context.vdev_id;

	return context.connected;
}
#endif

static void wlan_pdev_chan_match(struct wlan_objmgr_pdev *pdev, void *object,
				 void *arg)
{
	struct wlan_objmgr_vdev *comp_vdev = (struct wlan_objmgr_vdev *)object;
	struct wlan_vdev_ch_check_filter *ch_filter = arg;
	struct wlan_channel vdev_chan, *chan;
	struct wlan_channel *iter_vdev_chan;

	if (ch_filter->flag)
		return;

	if (comp_vdev == ch_filter->vdev)
		return;

	wlan_vdev_obj_lock(comp_vdev);
	chan = wlan_vdev_get_active_channel(comp_vdev);
	if (!chan) {
		wlan_vdev_obj_unlock(comp_vdev);
		return;
	}
	wlan_chan_copy(&vdev_chan, chan);
	wlan_vdev_obj_unlock(comp_vdev);

	wlan_vdev_obj_lock(ch_filter->vdev);
	iter_vdev_chan = wlan_vdev_mlme_get_des_chan(ch_filter->vdev);
	if (wlan_chan_eq(&vdev_chan, iter_vdev_chan)
		!= QDF_STATUS_SUCCESS) {
		ch_filter->flag = 1;
		qdf_debug("==> iter vdev id: %d: ieee %d, mode %d",
			  wlan_vdev_get_id(comp_vdev),
			  vdev_chan.ch_ieee,
			  vdev_chan.ch_phymode);
		qdf_debug("fl %016llx, fl-ext %08x, s1 %d, s2 %d ",
			  vdev_chan.ch_flags, vdev_chan.ch_flagext,
			  vdev_chan.ch_freq_seg1,
			  vdev_chan.ch_freq_seg2);
		qdf_debug("==> base vdev id: %d: ieee %d mode %d",
			  wlan_vdev_get_id(ch_filter->vdev),
			  iter_vdev_chan->ch_ieee,
			  iter_vdev_chan->ch_phymode);
		qdf_debug("fl %016llx, fl-ext %08x s1 %d, s2 %d",
			  iter_vdev_chan->ch_flags,
			  iter_vdev_chan->ch_flagext,
			  iter_vdev_chan->ch_freq_seg1,
			  iter_vdev_chan->ch_freq_seg2);
	}
	wlan_vdev_obj_unlock(ch_filter->vdev);
}

QDF_STATUS wlan_util_pdev_vdevs_deschan_match(struct wlan_objmgr_pdev *pdev,
					      struct wlan_objmgr_vdev *vdev,
					      wlan_objmgr_ref_dbgid dbg_id)
{
	struct wlan_vdev_ch_check_filter ch_filter;

	if (!pdev)
		return QDF_STATUS_E_INVAL;

	if (wlan_pdev_nif_feat_cap_get(pdev, WLAN_PDEV_F_CHAN_CONCURRENCY))
		return QDF_STATUS_SUCCESS;

	if (wlan_objmgr_vdev_try_get_ref(vdev, dbg_id) == QDF_STATUS_SUCCESS) {
		ch_filter.flag = 0;
		ch_filter.vdev = vdev;

		wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
						  wlan_pdev_chan_match,
						  &ch_filter, 0, dbg_id);

		wlan_objmgr_vdev_release_ref(vdev, dbg_id);

		if (ch_filter.flag == 0)
			return QDF_STATUS_SUCCESS;
	}

	return QDF_STATUS_E_FAILURE;
}

static void wlan_vdev_restart_progress(struct wlan_objmgr_pdev *pdev,
				       void *object, void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	uint8_t *flag = (uint8_t *)arg;

	wlan_vdev_obj_lock(vdev);
	if (wlan_vdev_is_restart_progress(vdev) == QDF_STATUS_SUCCESS)
		*flag = 1;

	wlan_vdev_obj_unlock(vdev);
}

QDF_STATUS wlan_util_is_pdev_restart_progress(struct wlan_objmgr_pdev *pdev,
					      wlan_objmgr_ref_dbgid dbg_id)
{
	uint8_t flag = 0;

	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
					  wlan_vdev_restart_progress,
					  &flag, 0, dbg_id);

	if (flag == 1)
		return QDF_STATUS_SUCCESS;

	return QDF_STATUS_E_INVAL;
}

static void wlan_vdev_scan_allowed(struct wlan_objmgr_pdev *pdev, void *object,
				   void *arg)
{
	struct wlan_objmgr_vdev *vdev = (struct wlan_objmgr_vdev *)object;
	uint8_t *flag = (uint8_t *)arg;

	wlan_vdev_obj_lock(vdev);
	if (wlan_vdev_mlme_is_scan_allowed(vdev) != QDF_STATUS_SUCCESS)
		*flag = 1;

	wlan_vdev_obj_unlock(vdev);
}

QDF_STATUS wlan_util_is_pdev_scan_allowed(struct wlan_objmgr_pdev *pdev,
					  wlan_objmgr_ref_dbgid dbg_id)
{
	uint8_t flag = 0;

	if (!pdev)
		return QDF_STATUS_E_INVAL;

	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
					  wlan_vdev_scan_allowed,
					  &flag, 0, dbg_id);

	if (flag == 1)
		return QDF_STATUS_E_FAILURE;

	return QDF_STATUS_SUCCESS;
}

void
wlan_util_stats_get_rssi(bool db2dbm_enabled, int32_t bcn_snr, int32_t dat_snr,
			 int8_t *rssi)
{
	uint32_t snr;

	if (db2dbm_enabled) {
		if (TGT_IS_VALID_RSSI(bcn_snr))
			*rssi = bcn_snr;
		else if (TGT_IS_VALID_RSSI(dat_snr))
			*rssi = dat_snr;
		else
			*rssi = TGT_NOISE_FLOOR_DBM;
	} else {
		if (TGT_IS_VALID_SNR(bcn_snr))
			snr = bcn_snr;
		else if (TGT_IS_VALID_SNR(dat_snr))
			snr = dat_snr;
		else
			snr = TGT_INVALID_SNR;

		/* Get the absolute rssi value from the current rssi value */
		*rssi = snr + TGT_NOISE_FLOOR_DBM;
	}
}

/**
 * wlan_util_get_mode_specific_peer_count - This api gives vdev mode specific
 * peer count`
 * @pdev: PDEV object
 * @object: vdev object
 * @arg: argument passed by caller
 *
 * Return: void
 */
static void
wlan_util_get_mode_specific_peer_count(struct wlan_objmgr_pdev *pdev,
				       void *object, void *arg)
{
	struct wlan_objmgr_vdev *vdev = object;
	uint16_t temp_count = 0;
	struct wlan_op_mode_peer_count *count = arg;

	wlan_vdev_obj_lock(vdev);
	if (wlan_vdev_mlme_get_opmode(vdev) == count->opmode) {
		temp_count = wlan_vdev_get_peer_count(vdev);
		/* Decrement the self peer count */
		if (temp_count > 1)
			count->peer_count += (temp_count - 1);
	}
	wlan_vdev_obj_unlock(vdev);
}

uint16_t wlan_util_get_peer_count_for_mode(struct wlan_objmgr_pdev *pdev,
					   enum QDF_OPMODE mode)
{
	struct wlan_op_mode_peer_count count;

	count.opmode = mode;
	count.peer_count = 0;
	wlan_objmgr_pdev_iterate_obj_list(pdev, WLAN_VDEV_OP,
				wlan_util_get_mode_specific_peer_count, &count,
				0, WLAN_OBJMGR_ID);

	return count.peer_count;
}

#ifdef CONFIG_QCA_MINIDUMP
static bool wlan_minidump_log_enabled(struct wlan_objmgr_psoc *psoc,
				      enum wlan_minidump_host_data type)
{
	bool setval = false;

	switch (type) {
	case WLAN_MD_CP_EXT_PDEV:
		if (cfg_get(psoc, CFG_OL_MD_CP_EXT_PDEV))
			setval = true;
		break;
	case WLAN_MD_CP_EXT_PSOC:
		if (cfg_get(psoc, CFG_OL_MD_CP_EXT_PSOC))
			setval = true;
		break;
	case WLAN_MD_CP_EXT_VDEV:
		if (cfg_get(psoc, CFG_OL_MD_CP_EXT_VDEV))
			setval = true;
		break;
	case WLAN_MD_CP_EXT_PEER:
		if (cfg_get(psoc, CFG_OL_MD_CP_EXT_PEER))
			setval = true;
		break;
	case WLAN_MD_DP_SOC:
		if (cfg_get(psoc, CFG_OL_MD_DP_SOC))
			setval = true;
		break;
	case WLAN_MD_DP_PDEV:
		if (cfg_get(psoc, CFG_OL_MD_DP_PDEV))
			setval = true;
		break;
	case WLAN_MD_DP_PEER:
		if (cfg_get(psoc, CFG_OL_MD_DP_PEER))
			setval = true;
		break;
	case WLAN_MD_DP_SRNG_REO_DEST:
	case WLAN_MD_DP_SRNG_REO_EXCEPTION:
	case WLAN_MD_DP_SRNG_RX_REL:
	case WLAN_MD_DP_SRNG_REO_REINJECT:
	case WLAN_MD_DP_SRNG_REO_CMD:
	case WLAN_MD_DP_SRNG_REO_STATUS:
		if (cfg_get(psoc, CFG_OL_MD_DP_SRNG_REO))
			setval = true;
		break;
	case WLAN_MD_DP_SRNG_TCL_DATA:
	case WLAN_MD_DP_SRNG_TCL_CMD:
	case WLAN_MD_DP_SRNG_TCL_STATUS:
	case WLAN_MD_DP_SRNG_TX_COMP:
		if (cfg_get(psoc, CFG_OL_MD_DP_SRNG_TCL))
			setval = true;
		break;
	case WLAN_MD_DP_SRNG_WBM_DESC_REL:
	case WLAN_MD_DP_SRNG_WBM_IDLE_LINK:
		if (cfg_get(psoc, CFG_OL_MD_DP_SRNG_WBM))
			setval = true;
		break;
	case WLAN_MD_DP_LINK_DESC_BANK:
		if (cfg_get(psoc, CFG_OL_MD_DP_LINK_DESC_BANK))
			setval = true;
		break;
	case WLAN_MD_DP_SRNG_RXDMA_MON_BUF:
	case WLAN_MD_DP_SRNG_RXDMA_MON_DST:
	case WLAN_MD_DP_SRNG_RXDMA_MON_DESC:
	case WLAN_MD_DP_SRNG_RXDMA_ERR_DST:
	case WLAN_MD_DP_SRNG_RXDMA_MON_STATUS:
		if (cfg_get(psoc, CFG_OL_MD_DP_SRNG_RXDMA))
			setval = true;
		break;
	case WLAN_MD_DP_HAL_SOC:
		if (cfg_get(psoc, CFG_OL_MD_DP_HAL_SOC))
			setval = true;
		break;
	case WLAN_MD_OBJMGR_PSOC:
	case WLAN_MD_OBJMGR_PSOC_TGT_INFO:
		if (cfg_get(psoc, CFG_OL_MD_OBJMGR_PSOC))
			setval = true;
		break;
	case WLAN_MD_OBJMGR_PDEV:
	case WLAN_MD_OBJMGR_PDEV_MLME:
		if (cfg_get(psoc, CFG_OL_MD_OBJMGR_PDEV))
			setval = true;
		break;
	case WLAN_MD_OBJMGR_VDEV_MLME:
	case WLAN_MD_OBJMGR_VDEV_SM:
	case WLAN_MD_OBJMGR_VDEV:
		if (cfg_get(psoc, CFG_OL_MD_OBJMGR_VDEV))
			setval = true;
		break;
	default:
		qdf_debug("Minidump: Type not implemented");
	}

	return setval;
}
#else /* CONFIG_QCA_MINIDUMP */
static bool wlan_minidump_log_enabled(struct wlan_objmgr_psoc *psoc,
				      enum wlan_minidump_host_data type)
{
	return false;
}
#endif

void wlan_minidump_log(void *start_addr, const size_t size,
		       void *psoc_obj,
		       enum wlan_minidump_host_data type,
		       const char *name)
{
	struct wlan_objmgr_psoc *psoc;

	if (!psoc_obj) {
		qdf_debug("Minidump: Psoc is NULL");
		return;
	}

	psoc = (struct wlan_objmgr_psoc *)psoc_obj;

	if (psoc && wlan_minidump_log_enabled(psoc, type))
		qdf_minidump_log(start_addr, size, name);
}
qdf_export_symbol(wlan_minidump_log);

void wlan_minidump_remove(void *start_addr, const size_t size,
			  void *psoc_obj,
			  enum wlan_minidump_host_data type,
			  const char *name)
{
	struct wlan_objmgr_psoc *psoc;

	if (!psoc_obj) {
		qdf_debug("Minidump: Psoc is NULL");
		return;
	}

	psoc = (struct wlan_objmgr_psoc *)psoc_obj;

	if (psoc && wlan_minidump_log_enabled(psoc, type))
		qdf_minidump_remove(start_addr, size, name);
}
qdf_export_symbol(wlan_minidump_remove);