drivers/net/wireless/microchip/wilc1000/wlan_cfg.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
  * All rights reserved.
  */

 #include <linux/bitfield.h>
 #include "wlan_if.h"
 #include "wlan.h"
 #include "wlan_cfg.h"
 #include "netdev.h"

 enum cfg_cmd_type {
 	CFG_BYTE_CMD	= 0,
 	CFG_HWORD_CMD	= 1,
 	CFG_WORD_CMD	= 2,
 	CFG_STR_CMD	= 3,
 	CFG_BIN_CMD	= 4
 };

 static const struct wilc_cfg_byte g_cfg_byte[] = {
 	{WID_STATUS, 0},
 	{WID_RSSI, 0},
 	{WID_LINKSPEED, 0},
 	{WID_WOWLAN_TRIGGER, 0},
 	{WID_NIL, 0}
 };

 static const struct wilc_cfg_hword g_cfg_hword[] = {
 	{WID_NIL, 0}
 };

 static const struct wilc_cfg_word g_cfg_word[] = {
 	{WID_FAILED_COUNT, 0},
 	{WID_RECEIVED_FRAGMENT_COUNT, 0},
 	{WID_SUCCESS_FRAME_COUNT, 0},
 	{WID_GET_INACTIVE_TIME, 0},
 	{WID_NIL, 0}

 };

 static const struct wilc_cfg_str g_cfg_str[] = {
 	{WID_FIRMWARE_VERSION, NULL},
 	{WID_MAC_ADDR, NULL},
 	{WID_ASSOC_RES_INFO, NULL},
 	{WID_NIL, NULL}
 };

 #define WILC_RESP_MSG_TYPE_CONFIG_REPLY		'R'
 #define WILC_RESP_MSG_TYPE_STATUS_INFO		'I'
 #define WILC_RESP_MSG_TYPE_NETWORK_INFO		'N'
 #define WILC_RESP_MSG_TYPE_SCAN_COMPLETE	'S'

 /********************************************
  *
  *      Configuration Functions
  *
  ********************************************/

 static int wilc_wlan_cfg_set_byte(u8 *frame, u32 offset, u16 id, u8 val8)
 {
 	if ((offset + 4) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);
 	put_unaligned_le16(1, &frame[offset + 2]);
 	frame[offset + 4] = val8;
 	return 5;
 }

 static int wilc_wlan_cfg_set_hword(u8 *frame, u32 offset, u16 id, u16 val16)
 {
 	if ((offset + 5) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);
 	put_unaligned_le16(2, &frame[offset + 2]);
 	put_unaligned_le16(val16, &frame[offset + 4]);

 	return 6;
 }

 static int wilc_wlan_cfg_set_word(u8 *frame, u32 offset, u16 id, u32 val32)
 {
 	if ((offset + 7) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);
 	put_unaligned_le16(4, &frame[offset + 2]);
 	put_unaligned_le32(val32, &frame[offset + 4]);

 	return 8;
 }

 static int wilc_wlan_cfg_set_str(u8 *frame, u32 offset, u16 id, u8 *str,
 				 u32 size)
 {
 	if ((offset + size + 4) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);
 	put_unaligned_le16(size, &frame[offset + 2]);
 	if (str && size != 0)
 		memcpy(&frame[offset + 4], str, size);

 	return (size + 4);
 }

 static int wilc_wlan_cfg_set_bin(u8 *frame, u32 offset, u16 id, u8 *b, u32 size)
 {
 	u32 i;
 	u8 checksum = 0;

 	if ((offset + size + 5) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);
 	put_unaligned_le16(size, &frame[offset + 2]);

 	if ((b) && size != 0) {
 		memcpy(&frame[offset + 4], b, size);
 		for (i = 0; i < size; i++)
 			checksum += frame[offset + i + 4];
 	}

 	frame[offset + size + 4] = checksum;

 	return (size + 5);
 }

 /********************************************
  *
  *      Configuration Response Functions
  *
  ********************************************/

 static void wilc_wlan_parse_response_frame(struct wilc *wl, u8 *info, int size)
 {
 	u16 wid;
 	u32 len = 0, i = 0;
 	struct wilc_cfg *cfg = &wl->cfg;

 	while (size > 0) {
 		i = 0;
 		wid = get_unaligned_le16(info);

 		switch (FIELD_GET(WILC_WID_TYPE, wid)) {
 		case WID_CHAR:
 			while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
 				i++;

 			if (cfg->b[i].id == wid)
 				cfg->b[i].val = info[4];

 			len = 3;
 			break;

 		case WID_SHORT:
 			while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
 				i++;

 			if (cfg->hw[i].id == wid)
 				cfg->hw[i].val = get_unaligned_le16(&info[4]);

 			len = 4;
 			break;

 		case WID_INT:
 			while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
 				i++;

 			if (cfg->w[i].id == wid)
 				cfg->w[i].val = get_unaligned_le32(&info[4]);

 			len = 6;
 			break;

 		case WID_STR:
 			while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
 				i++;

 			if (cfg->s[i].id == wid)
 				memcpy(cfg->s[i].str, &info[2], info[2] + 2);

 			len = 2 + info[2];
 			break;

 		default:
 			break;
 		}
 		size -= (2 + len);
 		info += (2 + len);
 	}
 }

 static void wilc_wlan_parse_info_frame(struct wilc *wl, u8 *info)
 {
 	u32 wid, len;

 	wid = get_unaligned_le16(info);

 	len = info[2];

 	if (len == 1 && wid == WID_STATUS) {
 		int i = 0;

 		while (wl->cfg.b[i].id != WID_NIL &&
 		       wl->cfg.b[i].id != wid)
 			i++;

 		if (wl->cfg.b[i].id == wid)
 			wl->cfg.b[i].val = info[3];
 	}
 }

 /********************************************
  *
  *      Configuration Exported Functions
  *
  ********************************************/

 int wilc_wlan_cfg_set_wid(u8 *frame, u32 offset, u16 id, u8 *buf, int size)
 {
 	u8 type = FIELD_GET(WILC_WID_TYPE, id);
 	int ret = 0;

 	switch (type) {
 	case CFG_BYTE_CMD:
 		if (size >= 1)
 			ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);
 		break;

 	case CFG_HWORD_CMD:
 		if (size >= 2)
 			ret = wilc_wlan_cfg_set_hword(frame, offset, id,
 						      *((u16 *)buf));
 		break;

 	case CFG_WORD_CMD:
 		if (size >= 4)
 			ret = wilc_wlan_cfg_set_word(frame, offset, id,
 						     *((u32 *)buf));
 		break;

 	case CFG_STR_CMD:
 		ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);
 		break;

 	case CFG_BIN_CMD:
 		ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);
 		break;
 	}

 	return ret;
 }

 int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)
 {
 	if ((offset + 2) >= WILC_MAX_CFG_FRAME_SIZE)
 		return 0;

 	put_unaligned_le16(id, &frame[offset]);

 	return 2;
 }

 int wilc_wlan_cfg_get_val(struct wilc *wl, u16 wid, u8 *buffer,
 			  u32 buffer_size)
 {
 	u8 type = FIELD_GET(WILC_WID_TYPE, wid);
 	int i, ret = 0;
 	struct wilc_cfg *cfg = &wl->cfg;

 	i = 0;
 	if (type == CFG_BYTE_CMD) {
 		while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
 			i++;

 		if (cfg->b[i].id == wid) {
 			memcpy(buffer, &cfg->b[i].val, 1);
 			ret = 1;
 		}
 	} else if (type == CFG_HWORD_CMD) {
 		while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
 			i++;

 		if (cfg->hw[i].id == wid) {
 			memcpy(buffer, &cfg->hw[i].val, 2);
 			ret = 2;
 		}
 	} else if (type == CFG_WORD_CMD) {
 		while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
 			i++;

 		if (cfg->w[i].id == wid) {
 			memcpy(buffer, &cfg->w[i].val, 4);
 			ret = 4;
 		}
 	} else if (type == CFG_STR_CMD) {
 		while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
 			i++;

 		if (cfg->s[i].id == wid) {
 			u16 size = get_unaligned_le16(cfg->s[i].str);

 			if (buffer_size >= size) {
 				memcpy(buffer, &cfg->s[i].str[2], size);
 				ret = size;
 			}
 		}
 	}
 	return ret;
 }

 void wilc_wlan_cfg_indicate_rx(struct wilc *wilc, u8 *frame, int size,
 			       struct wilc_cfg_rsp *rsp)
 {
 	u8 msg_type;
 	u8 msg_id;

 	msg_type = frame[0];
 	msg_id = frame[1];      /* seq no */
 	frame += 4;
 	size -= 4;
 	rsp->type = 0;

 	switch (msg_type) {
 	case WILC_RESP_MSG_TYPE_CONFIG_REPLY:
 		wilc_wlan_parse_response_frame(wilc, frame, size);
 		rsp->type = WILC_CFG_RSP;
 		rsp->seq_no = msg_id;
 		break;

 	case WILC_RESP_MSG_TYPE_STATUS_INFO:
 		wilc_wlan_parse_info_frame(wilc, frame);
 		rsp->type = WILC_CFG_RSP_STATUS;
 		rsp->seq_no = msg_id;
 		/* call host interface info parse as well */
 		wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);
 		break;

 	case WILC_RESP_MSG_TYPE_NETWORK_INFO:
 		wilc_network_info_received(wilc, frame - 4, size + 4);
 		break;

 	case WILC_RESP_MSG_TYPE_SCAN_COMPLETE:
 		wilc_scan_complete_received(wilc, frame - 4, size + 4);
 		break;

 	default:
 		rsp->seq_no = msg_id;
 		break;
 	}
 }

 int wilc_wlan_cfg_init(struct wilc *wl)
 {
 	struct wilc_cfg_str_vals *str_vals;
 	int i = 0;

 	wl->cfg.b = kmemdup(g_cfg_byte, sizeof(g_cfg_byte), GFP_KERNEL);
 	if (!wl->cfg.b)
 		return -ENOMEM;

 	wl->cfg.hw = kmemdup(g_cfg_hword, sizeof(g_cfg_hword), GFP_KERNEL);
 	if (!wl->cfg.hw)
 		goto out_b;

 	wl->cfg.w = kmemdup(g_cfg_word, sizeof(g_cfg_word), GFP_KERNEL);
 	if (!wl->cfg.w)
 		goto out_hw;

 	wl->cfg.s = kmemdup(g_cfg_str, sizeof(g_cfg_str), GFP_KERNEL);
 	if (!wl->cfg.s)
 		goto out_w;

 	str_vals = kzalloc(sizeof(*str_vals), GFP_KERNEL);
 	if (!str_vals)
 		goto out_s;

 	wl->cfg.str_vals = str_vals;
 	/* store the string cfg parameters */
 	wl->cfg.s[i].id = WID_FIRMWARE_VERSION;
 	wl->cfg.s[i].str = str_vals->firmware_version;
 	i++;
 	wl->cfg.s[i].id = WID_MAC_ADDR;
 	wl->cfg.s[i].str = str_vals->mac_address;
 	i++;
 	wl->cfg.s[i].id = WID_ASSOC_RES_INFO;
 	wl->cfg.s[i].str = str_vals->assoc_rsp;
 	i++;
 	wl->cfg.s[i].id = WID_NIL;
 	wl->cfg.s[i].str = NULL;
 	return 0;

 out_s:
 	kfree(wl->cfg.s);
 out_w:
 	kfree(wl->cfg.w);
 out_hw:
 	kfree(wl->cfg.hw);
 out_b:
 	kfree(wl->cfg.b);
 	return -ENOMEM;
 }

 void wilc_wlan_cfg_deinit(struct wilc *wl)
 {
 	kfree(wl->cfg.b);
 	kfree(wl->cfg.hw);
 	kfree(wl->cfg.w);
 	kfree(wl->cfg.s);
 	kfree(wl->cfg.str_vals);
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
	* All rights reserved.
	*/

	#include <linux/bitfield.h>
	#include "wlan_if.h"
	#include "wlan.h"
	#include "wlan_cfg.h"
	#include "netdev.h"

	enum cfg_cmd_type {
	CFG_BYTE_CMD = 0,
	CFG_HWORD_CMD = 1,
	CFG_WORD_CMD = 2,
	CFG_STR_CMD = 3,
	CFG_BIN_CMD = 4
	};

	static const struct wilc_cfg_byte g_cfg_byte[] = {
	{WID_STATUS, 0},
	{WID_RSSI, 0},
	{WID_LINKSPEED, 0},
	{WID_WOWLAN_TRIGGER, 0},
	{WID_NIL, 0}
	};

	static const struct wilc_cfg_hword g_cfg_hword[] = {
	{WID_NIL, 0}
	};

	static const struct wilc_cfg_word g_cfg_word[] = {
	{WID_FAILED_COUNT, 0},
	{WID_RECEIVED_FRAGMENT_COUNT, 0},
	{WID_SUCCESS_FRAME_COUNT, 0},
	{WID_GET_INACTIVE_TIME, 0},
	{WID_NIL, 0}

	};

	static const struct wilc_cfg_str g_cfg_str[] = {
	{WID_FIRMWARE_VERSION, NULL},
	{WID_MAC_ADDR, NULL},
	{WID_ASSOC_RES_INFO, NULL},
	{WID_NIL, NULL}
	};

	#define WILC_RESP_MSG_TYPE_CONFIG_REPLY 'R'
	#define WILC_RESP_MSG_TYPE_STATUS_INFO 'I'
	#define WILC_RESP_MSG_TYPE_NETWORK_INFO 'N'
	#define WILC_RESP_MSG_TYPE_SCAN_COMPLETE 'S'

	/********************************************
	*
	* Configuration Functions
	*
	********************************************/

	static int wilc_wlan_cfg_set_byte(u8 *frame, u32 offset, u16 id, u8 val8)
	{
	if ((offset + 4) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);
	put_unaligned_le16(1, &frame[offset + 2]);
	frame[offset + 4] = val8;
	return 5;
	}

	static int wilc_wlan_cfg_set_hword(u8 *frame, u32 offset, u16 id, u16 val16)
	{
	if ((offset + 5) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);
	put_unaligned_le16(2, &frame[offset + 2]);
	put_unaligned_le16(val16, &frame[offset + 4]);

	return 6;
	}

	static int wilc_wlan_cfg_set_word(u8 *frame, u32 offset, u16 id, u32 val32)
	{
	if ((offset + 7) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);
	put_unaligned_le16(4, &frame[offset + 2]);
	put_unaligned_le32(val32, &frame[offset + 4]);

	return 8;
	}

	static int wilc_wlan_cfg_set_str(u8 frame, u32 offset, u16 id, u8 str,
	u32 size)
	{
	if ((offset + size + 4) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);
	put_unaligned_le16(size, &frame[offset + 2]);
	if (str && size != 0)
	memcpy(&frame[offset + 4], str, size);

	return (size + 4);
	}

	static int wilc_wlan_cfg_set_bin(u8 frame, u32 offset, u16 id, u8 b, u32 size)
	{
	u32 i;
	u8 checksum = 0;

	if ((offset + size + 5) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);
	put_unaligned_le16(size, &frame[offset + 2]);

	if ((b) && size != 0) {
	memcpy(&frame[offset + 4], b, size);
	for (i = 0; i < size; i++)
	checksum += frame[offset + i + 4];
	}

	frame[offset + size + 4] = checksum;

	return (size + 5);
	}

	/********************************************
	*
	* Configuration Response Functions
	*
	********************************************/

	static void wilc_wlan_parse_response_frame(struct wilc wl, u8 info, int size)
	{
	u16 wid;
	u32 len = 0, i = 0;
	struct wilc_cfg *cfg = &wl->cfg;

	while (size > 0) {
	i = 0;
	wid = get_unaligned_le16(info);

	switch (FIELD_GET(WILC_WID_TYPE, wid)) {
	case WID_CHAR:
	while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
	i++;

	if (cfg->b[i].id == wid)
	cfg->b[i].val = info[4];

	len = 3;
	break;

	case WID_SHORT:
	while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
	i++;

	if (cfg->hw[i].id == wid)
	cfg->hw[i].val = get_unaligned_le16(&info[4]);

	len = 4;
	break;

	case WID_INT:
	while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
	i++;

	if (cfg->w[i].id == wid)
	cfg->w[i].val = get_unaligned_le32(&info[4]);

	len = 6;
	break;

	case WID_STR:
	while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
	i++;

	if (cfg->s[i].id == wid)
	memcpy(cfg->s[i].str, &info[2], info[2] + 2);

	len = 2 + info[2];
	break;

	default:
	break;
	}
	size -= (2 + len);
	info += (2 + len);
	}
	}

	static void wilc_wlan_parse_info_frame(struct wilc wl, u8 info)
	{
	u32 wid, len;

	wid = get_unaligned_le16(info);

	len = info[2];

	if (len == 1 && wid == WID_STATUS) {
	int i = 0;

	while (wl->cfg.b[i].id != WID_NIL &&
	wl->cfg.b[i].id != wid)
	i++;

	if (wl->cfg.b[i].id == wid)
	wl->cfg.b[i].val = info[3];
	}
	}

	/********************************************
	*
	* Configuration Exported Functions
	*
	********************************************/

	int wilc_wlan_cfg_set_wid(u8 frame, u32 offset, u16 id, u8 buf, int size)
	{
	u8 type = FIELD_GET(WILC_WID_TYPE, id);
	int ret = 0;

	switch (type) {
	case CFG_BYTE_CMD:
	if (size >= 1)
	ret = wilc_wlan_cfg_set_byte(frame, offset, id, *buf);
	break;

	case CFG_HWORD_CMD:
	if (size >= 2)
	ret = wilc_wlan_cfg_set_hword(frame, offset, id,
	((u16 )buf));
	break;

	case CFG_WORD_CMD:
	if (size >= 4)
	ret = wilc_wlan_cfg_set_word(frame, offset, id,
	((u32 )buf));
	break;

	case CFG_STR_CMD:
	ret = wilc_wlan_cfg_set_str(frame, offset, id, buf, size);
	break;

	case CFG_BIN_CMD:
	ret = wilc_wlan_cfg_set_bin(frame, offset, id, buf, size);
	break;
	}

	return ret;
	}

	int wilc_wlan_cfg_get_wid(u8 *frame, u32 offset, u16 id)
	{
	if ((offset + 2) >= WILC_MAX_CFG_FRAME_SIZE)
	return 0;

	put_unaligned_le16(id, &frame[offset]);

	return 2;
	}

	int wilc_wlan_cfg_get_val(struct wilc wl, u16 wid, u8 buffer,
	u32 buffer_size)
	{
	u8 type = FIELD_GET(WILC_WID_TYPE, wid);
	int i, ret = 0;
	struct wilc_cfg *cfg = &wl->cfg;

	i = 0;
	if (type == CFG_BYTE_CMD) {
	while (cfg->b[i].id != WID_NIL && cfg->b[i].id != wid)
	i++;

	if (cfg->b[i].id == wid) {
	memcpy(buffer, &cfg->b[i].val, 1);
	ret = 1;
	}
	} else if (type == CFG_HWORD_CMD) {
	while (cfg->hw[i].id != WID_NIL && cfg->hw[i].id != wid)
	i++;

	if (cfg->hw[i].id == wid) {
	memcpy(buffer, &cfg->hw[i].val, 2);
	ret = 2;
	}
	} else if (type == CFG_WORD_CMD) {
	while (cfg->w[i].id != WID_NIL && cfg->w[i].id != wid)
	i++;

	if (cfg->w[i].id == wid) {
	memcpy(buffer, &cfg->w[i].val, 4);
	ret = 4;
	}
	} else if (type == CFG_STR_CMD) {
	while (cfg->s[i].id != WID_NIL && cfg->s[i].id != wid)
	i++;

	if (cfg->s[i].id == wid) {
	u16 size = get_unaligned_le16(cfg->s[i].str);

	if (buffer_size >= size) {
	memcpy(buffer, &cfg->s[i].str[2], size);
	ret = size;
	}
	}
	}
	return ret;
	}

	void wilc_wlan_cfg_indicate_rx(struct wilc wilc, u8 frame, int size,
	struct wilc_cfg_rsp *rsp)
	{
	u8 msg_type;
	u8 msg_id;

	msg_type = frame[0];
	msg_id = frame[1]; /* seq no */
	frame += 4;
	size -= 4;
	rsp->type = 0;

	switch (msg_type) {
	case WILC_RESP_MSG_TYPE_CONFIG_REPLY:
	wilc_wlan_parse_response_frame(wilc, frame, size);
	rsp->type = WILC_CFG_RSP;
	rsp->seq_no = msg_id;
	break;

	case WILC_RESP_MSG_TYPE_STATUS_INFO:
	wilc_wlan_parse_info_frame(wilc, frame);
	rsp->type = WILC_CFG_RSP_STATUS;
	rsp->seq_no = msg_id;
	/* call host interface info parse as well */
	wilc_gnrl_async_info_received(wilc, frame - 4, size + 4);
	break;

	case WILC_RESP_MSG_TYPE_NETWORK_INFO:
	wilc_network_info_received(wilc, frame - 4, size + 4);
	break;

	case WILC_RESP_MSG_TYPE_SCAN_COMPLETE:
	wilc_scan_complete_received(wilc, frame - 4, size + 4);
	break;

	default:
	rsp->seq_no = msg_id;
	break;
	}
	}

	int wilc_wlan_cfg_init(struct wilc *wl)
	{
	struct wilc_cfg_str_vals *str_vals;
	int i = 0;

	wl->cfg.b = kmemdup(g_cfg_byte, sizeof(g_cfg_byte), GFP_KERNEL);
	if (!wl->cfg.b)
	return -ENOMEM;

	wl->cfg.hw = kmemdup(g_cfg_hword, sizeof(g_cfg_hword), GFP_KERNEL);
	if (!wl->cfg.hw)
	goto out_b;

	wl->cfg.w = kmemdup(g_cfg_word, sizeof(g_cfg_word), GFP_KERNEL);
	if (!wl->cfg.w)
	goto out_hw;

	wl->cfg.s = kmemdup(g_cfg_str, sizeof(g_cfg_str), GFP_KERNEL);
	if (!wl->cfg.s)
	goto out_w;

	str_vals = kzalloc(sizeof(*str_vals), GFP_KERNEL);
	if (!str_vals)
	goto out_s;

	wl->cfg.str_vals = str_vals;
	/* store the string cfg parameters */
	wl->cfg.s[i].id = WID_FIRMWARE_VERSION;
	wl->cfg.s[i].str = str_vals->firmware_version;
	i++;
	wl->cfg.s[i].id = WID_MAC_ADDR;
	wl->cfg.s[i].str = str_vals->mac_address;
	i++;
	wl->cfg.s[i].id = WID_ASSOC_RES_INFO;
	wl->cfg.s[i].str = str_vals->assoc_rsp;
	i++;
	wl->cfg.s[i].id = WID_NIL;
	wl->cfg.s[i].str = NULL;
	return 0;

	out_s:
	kfree(wl->cfg.s);
	out_w:
	kfree(wl->cfg.w);
	out_hw:
	kfree(wl->cfg.hw);
	out_b:
	kfree(wl->cfg.b);
	return -ENOMEM;
	}

	void wilc_wlan_cfg_deinit(struct wilc *wl)
	{
	kfree(wl->cfg.b);
	kfree(wl->cfg.hw);
	kfree(wl->cfg.w);
	kfree(wl->cfg.s);
	kfree(wl->cfg.str_vals);
	}