bcmdhd.101.10.240.x/dhd_static_buf.c - kernel/amlogic-tv-modules/dhd-driver - Git at Google

 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/skbuff.h>

 #define	DHD_STATIC_VERSION_STR		"100.10.545.7 (r826445-20200110-2)"

 #define BCMDHD_SDIO
 #define BCMDHD_PCIE

 enum dhd_prealloc_index {
 	DHD_PREALLOC_PROT = 0,
 #if defined(BCMDHD_SDIO)
 	DHD_PREALLOC_RXBUF = 1,
 	DHD_PREALLOC_DATABUF = 2,
 #endif
 	DHD_PREALLOC_OSL_BUF = 3,
 	DHD_PREALLOC_SKB_BUF = 4,
 	DHD_PREALLOC_WIPHY_ESCAN0 = 5,
 	DHD_PREALLOC_WIPHY_ESCAN1 = 6,
 	DHD_PREALLOC_DHD_INFO = 7,
 	DHD_PREALLOC_DHD_WLFC_INFO = 8,
 #ifdef BCMDHD_PCIE
 	DHD_PREALLOC_IF_FLOW_LKUP = 9,
 #endif
 	DHD_PREALLOC_MEMDUMP_BUF = 10,
 	DHD_PREALLOC_MEMDUMP_RAM = 11,
 	DHD_PREALLOC_DHD_WLFC_HANGER = 12,
 	DHD_PREALLOC_PKTID_MAP = 13,
 	DHD_PREALLOC_PKTID_MAP_IOCTL = 14,
 	DHD_PREALLOC_DHD_LOG_DUMP_BUF = 15,
 	DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX = 16,
 	DHD_PREALLOC_DHD_PKTLOG_DUMP_BUF = 17,
 	DHD_PREALLOC_STAT_REPORT_BUF = 18,
 	DHD_PREALLOC_WL_ESCAN = 19,
 	DHD_PREALLOC_FW_VERBOSE_RING = 20,
 	DHD_PREALLOC_FW_EVENT_RING = 21,
 	DHD_PREALLOC_DHD_EVENT_RING = 22,
 	DHD_PREALLOC_NAN_EVENT_RING = 23,
 	DHD_PREALLOC_MAX
 };

 #define STATIC_BUF_MAX_NUM	20
 #define STATIC_BUF_SIZE	(PAGE_SIZE*2)

 #ifndef CUSTOM_LOG_DUMP_BUFSIZE_MB
 #define CUSTOM_LOG_DUMP_BUFSIZE_MB	4 /* DHD_LOG_DUMP_BUF_SIZE 4 MB static memory in kernel */
 #endif /* CUSTOM_LOG_DUMP_BUFSIZE_MB */

 #define DHD_PREALLOC_PROT_SIZE	(16 * 1024)
 #define DHD_PREALLOC_RXBUF_SIZE	(24 * 1024)
 #define DHD_PREALLOC_DATABUF_SIZE	(64 * 1024)
 #define DHD_PREALLOC_OSL_BUF_SIZE	(STATIC_BUF_MAX_NUM * STATIC_BUF_SIZE)
 #define DHD_PREALLOC_WIPHY_ESCAN0_SIZE	(64 * 1024)
 #define DHD_PREALLOC_DHD_INFO_SIZE	(32 * 1024)
 #define DHD_PREALLOC_MEMDUMP_RAM_SIZE	(1290 * 1024)
 #define DHD_PREALLOC_DHD_WLFC_HANGER_SIZE	(73 * 1024)
 #define DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE (1024 * 1024 * CUSTOM_LOG_DUMP_BUFSIZE_MB)
 #define DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE (8 * 1024)
 #define DHD_PREALLOC_WL_ESCAN_SIZE	(70 * 1024)
 #ifdef CONFIG_64BIT
 #define DHD_PREALLOC_IF_FLOW_LKUP_SIZE	(20 * 1024 * 2)
 #else
 #define DHD_PREALLOC_IF_FLOW_LKUP_SIZE	(20 * 1024)
 #endif
 #define FW_VERBOSE_RING_SIZE		(256 * 1024)
 #define FW_EVENT_RING_SIZE		(64 * 1024)
 #define DHD_EVENT_RING_SIZE		(64 * 1024)
 #define NAN_EVENT_RING_SIZE		(64 * 1024)

 #if defined(CONFIG_64BIT)
 #define WLAN_DHD_INFO_BUF_SIZE	(24 * 1024)
 #define WLAN_DHD_WLFC_BUF_SIZE	(64 * 1024)
 #define WLAN_DHD_IF_FLOW_LKUP_SIZE	(64 * 1024)
 #else
 #define WLAN_DHD_INFO_BUF_SIZE	(16 * 1024)
 #define WLAN_DHD_WLFC_BUF_SIZE	(64 * 1024)
 #define WLAN_DHD_IF_FLOW_LKUP_SIZE	(20 * 1024)
 #endif /* CONFIG_64BIT */
 #define WLAN_DHD_MEMDUMP_SIZE	(800 * 1024)

 #define DHD_SKB_1PAGE_BUFSIZE	(PAGE_SIZE*1)
 #define DHD_SKB_2PAGE_BUFSIZE	(PAGE_SIZE*2)
 #define DHD_SKB_4PAGE_BUFSIZE	(PAGE_SIZE*4)

 #define DHD_SKB_1PAGE_BUF_NUM	8
 #ifdef BCMDHD_PCIE
 #define DHD_SKB_2PAGE_BUF_NUM	64
 #elif defined(BCMDHD_SDIO)
 #define DHD_SKB_2PAGE_BUF_NUM	8
 #endif
 #define DHD_SKB_4PAGE_BUF_NUM	1

 /* The number is defined in linux_osl.c
  * WLAN_SKB_1_2PAGE_BUF_NUM => STATIC_PKT_1_2PAGE_NUM
  * WLAN_SKB_BUF_NUM => STATIC_PKT_MAX_NUM
  */
 #define WLAN_SKB_1_2PAGE_BUF_NUM ((DHD_SKB_1PAGE_BUF_NUM) + \
 		(DHD_SKB_2PAGE_BUF_NUM))
 #define WLAN_SKB_BUF_NUM ((WLAN_SKB_1_2PAGE_BUF_NUM) + (DHD_SKB_4PAGE_BUF_NUM))

 void *wlan_static_prot = NULL;
 void *wlan_static_rxbuf = NULL;
 void *wlan_static_databuf = NULL;
 void *wlan_static_osl_buf = NULL;
 void *wlan_static_scan_buf0 = NULL;
 void *wlan_static_scan_buf1 = NULL;
 void *wlan_static_dhd_info_buf = NULL;
 void *wlan_static_dhd_wlfc_info_buf = NULL;
 void *wlan_static_if_flow_lkup = NULL;
 void *wlan_static_dhd_memdump_ram_buf = NULL;
 void *wlan_static_dhd_wlfc_hanger_buf = NULL;
 void *wlan_static_dhd_log_dump_buf = NULL;
 void *wlan_static_dhd_log_dump_buf_ex = NULL;
 void *wlan_static_wl_escan_info_buf = NULL;
 void *wlan_static_fw_verbose_ring_buf = NULL;
 void *wlan_static_fw_event_ring_buf = NULL;
 void *wlan_static_dhd_event_ring_buf = NULL;
 void *wlan_static_nan_event_ring_buf = NULL;

 static struct sk_buff *wlan_static_skb[WLAN_SKB_BUF_NUM];

 void *dhd_wlan_mem_prealloc(int section, unsigned long size)
 {
 	pr_err("%s: sectoin %d, %ld\n", __func__, section, size);
 	if (section == DHD_PREALLOC_PROT)
 		return wlan_static_prot;

 #if defined(BCMDHD_SDIO)
 	if (section == DHD_PREALLOC_RXBUF)
 		return wlan_static_rxbuf;

 	if (section == DHD_PREALLOC_DATABUF)
 		return wlan_static_databuf;
 #endif /* BCMDHD_SDIO */

 	if (section == DHD_PREALLOC_SKB_BUF)
 		return wlan_static_skb;

 	if (section == DHD_PREALLOC_WIPHY_ESCAN0)
 		return wlan_static_scan_buf0;

 	if (section == DHD_PREALLOC_WIPHY_ESCAN1)
 		return wlan_static_scan_buf1;

 	if (section == DHD_PREALLOC_OSL_BUF) {
 		if (size > DHD_PREALLOC_OSL_BUF_SIZE) {
 			pr_err("request OSL_BUF(%lu) > %ld\n",
 				size, DHD_PREALLOC_OSL_BUF_SIZE);
 			return NULL;
 		}
 		return wlan_static_osl_buf;
 	}

 	if (section == DHD_PREALLOC_DHD_INFO) {
 		if (size > DHD_PREALLOC_DHD_INFO_SIZE) {
 			pr_err("request DHD_INFO size(%lu) > %d\n",
 				size, DHD_PREALLOC_DHD_INFO_SIZE);
 			return NULL;
 		}
 		return wlan_static_dhd_info_buf;
 	}
 	if (section == DHD_PREALLOC_DHD_WLFC_INFO) {
 		if (size > WLAN_DHD_WLFC_BUF_SIZE) {
 			pr_err("request DHD_WLFC_INFO size(%lu) > %d\n",
 				size, WLAN_DHD_WLFC_BUF_SIZE);
 			return NULL;
 		}
 		return wlan_static_dhd_wlfc_info_buf;
 	}
 #ifdef BCMDHD_PCIE
 	if (section == DHD_PREALLOC_IF_FLOW_LKUP)  {
 		if (size > DHD_PREALLOC_IF_FLOW_LKUP_SIZE) {
 			pr_err("request DHD_IF_FLOW_LKUP size(%lu) > %d\n",
 				size, DHD_PREALLOC_IF_FLOW_LKUP_SIZE);
 			return NULL;
 		}

 		return wlan_static_if_flow_lkup;
 	}
 #endif /* BCMDHD_PCIE */
 	if (section == DHD_PREALLOC_MEMDUMP_RAM) {
 		if (size > DHD_PREALLOC_MEMDUMP_RAM_SIZE) {
 			pr_err("request DHD_PREALLOC_MEMDUMP_RAM_SIZE(%lu) > %d\n",
 				size, DHD_PREALLOC_MEMDUMP_RAM_SIZE);
 			return NULL;
 		}

 		return wlan_static_dhd_memdump_ram_buf;
 	}
 	if (section == DHD_PREALLOC_DHD_WLFC_HANGER) {
 		if (size > DHD_PREALLOC_DHD_WLFC_HANGER_SIZE) {
 			pr_err("request DHD_WLFC_HANGER size(%lu) > %d\n",
 				size, DHD_PREALLOC_DHD_WLFC_HANGER_SIZE);
 			return NULL;
 		}
 		return wlan_static_dhd_wlfc_hanger_buf;
 	}
 	if (section == DHD_PREALLOC_DHD_LOG_DUMP_BUF) {
 		if (size > DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE) {
 			pr_err("request DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE(%lu) > %d\n",
 				size, DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE);
 			return NULL;
 		}

 		return wlan_static_dhd_log_dump_buf;
 	}
 	if (section == DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX) {
 		if (size > DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE) {
 			pr_err("request DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE(%lu) > %d\n",
 				size, DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE);
 			return NULL;
 		}

 		return wlan_static_dhd_log_dump_buf_ex;
 	}
 	if (section == DHD_PREALLOC_WL_ESCAN) {
 		if (size > DHD_PREALLOC_WL_ESCAN_SIZE) {
 			pr_err("request DHD_PREALLOC_WL_ESCAN_SIZE(%lu) > %d\n",
 				size, DHD_PREALLOC_WL_ESCAN_SIZE);
 			return NULL;
 		}

 		return wlan_static_wl_escan_info_buf;
 	}
 	if (section == DHD_PREALLOC_FW_VERBOSE_RING) {
 		if (size > FW_VERBOSE_RING_SIZE) {
 			pr_err("request DHD_PREALLOC_FW_VERBOSE_RING(%lu) > %d\n",
 				size, FW_VERBOSE_RING_SIZE);
 			return NULL;
 		}

 		return wlan_static_fw_verbose_ring_buf;
 	}
 	if (section == DHD_PREALLOC_FW_EVENT_RING) {
 		if (size > FW_EVENT_RING_SIZE) {
 			pr_err("request DHD_PREALLOC_FW_EVENT_RING(%lu) > %d\n",
 				size, FW_EVENT_RING_SIZE);
 			return NULL;
 		}

 		return wlan_static_fw_event_ring_buf;
 	}
 	if (section == DHD_PREALLOC_DHD_EVENT_RING) {
 		if (size > DHD_EVENT_RING_SIZE) {
 			pr_err("request DHD_PREALLOC_DHD_EVENT_RING(%lu) > %d\n",
 				size, DHD_EVENT_RING_SIZE);
 			return NULL;
 		}

 		return wlan_static_dhd_event_ring_buf;
 	}
 	if (section == DHD_PREALLOC_NAN_EVENT_RING) {
 		if (size > NAN_EVENT_RING_SIZE) {
 			pr_err("request DHD_PREALLOC_NAN_EVENT_RING(%lu) > %d\n",
 				size, NAN_EVENT_RING_SIZE);
 			return NULL;
 		}

 		return wlan_static_nan_event_ring_buf;
 	}
 	if ((section < 0) || (section > DHD_PREALLOC_MAX))
 		pr_err("request section id(%d) is out of max index %d\n",
 				section, DHD_PREALLOC_MAX);

 	pr_err("%s: failed to alloc section %d, size=%ld\n",
 		__func__, section, size);

 	return NULL;
 }
 EXPORT_SYMBOL(dhd_wlan_mem_prealloc);

 static int dhd_init_wlan_mem(void)
 {
 	int i;
 	int j;
 	printk(KERN_ERR "%s(): %s\n", __func__, DHD_STATIC_VERSION_STR);

 	for (i = 0; i < DHD_SKB_1PAGE_BUF_NUM; i++) {
 		wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_1PAGE_BUFSIZE);
 		if (!wlan_static_skb[i]) {
 			goto err_skb_alloc;
 		}
 		pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
 			DHD_PREALLOC_SKB_BUF, i, DHD_SKB_1PAGE_BUFSIZE);
 	}

 	for (i = DHD_SKB_1PAGE_BUF_NUM; i < WLAN_SKB_1_2PAGE_BUF_NUM; i++) {
 		wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_2PAGE_BUFSIZE);
 		if (!wlan_static_skb[i]) {
 			goto err_skb_alloc;
 		}
 		pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
 			DHD_PREALLOC_SKB_BUF, i, DHD_SKB_2PAGE_BUFSIZE);
 	}

 #if defined(BCMDHD_SDIO)
 	wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_4PAGE_BUFSIZE);
 	if (!wlan_static_skb[i])
 		goto err_skb_alloc;
 	pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
 		DHD_PREALLOC_SKB_BUF, i, DHD_SKB_4PAGE_BUFSIZE);
 #endif /* BCMDHD_SDIO */

 	wlan_static_prot = kmalloc(DHD_PREALLOC_PROT_SIZE, GFP_KERNEL);
 	if (!wlan_static_prot)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_PROT, DHD_PREALLOC_PROT_SIZE);

 #if defined(BCMDHD_SDIO)
 	wlan_static_rxbuf = kmalloc(DHD_PREALLOC_RXBUF_SIZE, GFP_KERNEL);
 	if (!wlan_static_rxbuf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_RXBUF, DHD_PREALLOC_RXBUF_SIZE);

 	wlan_static_databuf = kmalloc(DHD_PREALLOC_DATABUF_SIZE, GFP_KERNEL);
 	if (!wlan_static_databuf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DATABUF, DHD_PREALLOC_DATABUF_SIZE);
 #endif /* BCMDHD_SDIO */

 	wlan_static_osl_buf = kmalloc(DHD_PREALLOC_OSL_BUF_SIZE, GFP_KERNEL);
 	if (!wlan_static_osl_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%ld\n", __func__,
 		DHD_PREALLOC_OSL_BUF, DHD_PREALLOC_OSL_BUF_SIZE);

 	wlan_static_scan_buf0 = kmalloc(DHD_PREALLOC_WIPHY_ESCAN0_SIZE, GFP_KERNEL);
 	if (!wlan_static_scan_buf0)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_WIPHY_ESCAN0, DHD_PREALLOC_WIPHY_ESCAN0_SIZE);

 	wlan_static_dhd_info_buf = kmalloc(DHD_PREALLOC_DHD_INFO_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_info_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_INFO, DHD_PREALLOC_DHD_INFO_SIZE);

 	wlan_static_dhd_wlfc_info_buf = kmalloc(WLAN_DHD_WLFC_BUF_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_wlfc_info_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_WLFC_INFO, WLAN_DHD_WLFC_BUF_SIZE);

 #ifdef BCMDHD_PCIE
 	wlan_static_if_flow_lkup = kmalloc(DHD_PREALLOC_IF_FLOW_LKUP_SIZE, GFP_KERNEL);
 	if (!wlan_static_if_flow_lkup)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_IF_FLOW_LKUP, DHD_PREALLOC_IF_FLOW_LKUP_SIZE);
 #endif /* BCMDHD_PCIE */

 	wlan_static_dhd_memdump_ram_buf = kmalloc(DHD_PREALLOC_MEMDUMP_RAM_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_memdump_ram_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_MEMDUMP_RAM, DHD_PREALLOC_MEMDUMP_RAM_SIZE);

 	wlan_static_dhd_wlfc_hanger_buf = kmalloc(DHD_PREALLOC_DHD_WLFC_HANGER_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_wlfc_hanger_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_WLFC_HANGER, DHD_PREALLOC_DHD_WLFC_HANGER_SIZE);

 	wlan_static_dhd_log_dump_buf = kmalloc(DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_log_dump_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_LOG_DUMP_BUF, DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE);

 	wlan_static_dhd_log_dump_buf_ex = kmalloc(DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_log_dump_buf_ex)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX, DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE);

 	wlan_static_wl_escan_info_buf = kmalloc(DHD_PREALLOC_WL_ESCAN_SIZE, GFP_KERNEL);
 	if (!wlan_static_wl_escan_info_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_WL_ESCAN, DHD_PREALLOC_WL_ESCAN_SIZE);

 	wlan_static_fw_verbose_ring_buf = kmalloc(FW_VERBOSE_RING_SIZE, GFP_KERNEL);
 	if (!wlan_static_fw_verbose_ring_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_FW_VERBOSE_RING, FW_VERBOSE_RING_SIZE);

 	wlan_static_fw_event_ring_buf = kmalloc(FW_EVENT_RING_SIZE, GFP_KERNEL);
 	if (!wlan_static_fw_event_ring_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_FW_EVENT_RING, FW_EVENT_RING_SIZE);

 	wlan_static_dhd_event_ring_buf = kmalloc(DHD_EVENT_RING_SIZE, GFP_KERNEL);
 	if (!wlan_static_dhd_event_ring_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_DHD_EVENT_RING, DHD_EVENT_RING_SIZE);

 	wlan_static_nan_event_ring_buf = kmalloc(NAN_EVENT_RING_SIZE, GFP_KERNEL);
 	if (!wlan_static_nan_event_ring_buf)
 		goto err_mem_alloc;
 	pr_err("%s: sectoin %d, size=%d\n", __func__,
 		DHD_PREALLOC_NAN_EVENT_RING, NAN_EVENT_RING_SIZE);

 	return 0;

 err_mem_alloc:

 	if (wlan_static_prot)
 		kfree(wlan_static_prot);

 #if defined(BCMDHD_SDIO)
 	if (wlan_static_rxbuf)
 		kfree(wlan_static_rxbuf);

 	if (wlan_static_databuf)
 		kfree(wlan_static_databuf);
 #endif /* BCMDHD_SDIO */

 	if (wlan_static_osl_buf)
 		kfree(wlan_static_osl_buf);

 	if (wlan_static_scan_buf0)
 		kfree(wlan_static_scan_buf0);

 	if (wlan_static_scan_buf1)
 		kfree(wlan_static_scan_buf1);

 	if (wlan_static_dhd_info_buf)
 		kfree(wlan_static_dhd_info_buf);

 	if (wlan_static_dhd_wlfc_info_buf)
 		kfree(wlan_static_dhd_wlfc_info_buf);

 #ifdef BCMDHD_PCIE
 	if (wlan_static_if_flow_lkup)
 		kfree(wlan_static_if_flow_lkup);
 #endif /* BCMDHD_PCIE */

 	if (wlan_static_dhd_memdump_ram_buf)
 		kfree(wlan_static_dhd_memdump_ram_buf);

 	if (wlan_static_dhd_wlfc_hanger_buf)
 		kfree(wlan_static_dhd_wlfc_hanger_buf);

 	if (wlan_static_dhd_log_dump_buf)
 		kfree(wlan_static_dhd_log_dump_buf);

 	if (wlan_static_dhd_log_dump_buf_ex)
 		kfree(wlan_static_dhd_log_dump_buf_ex);

 	if (wlan_static_wl_escan_info_buf)
 		kfree(wlan_static_wl_escan_info_buf);

 #ifdef BCMDHD_PCIE
 	if (wlan_static_fw_verbose_ring_buf)
 		kfree(wlan_static_fw_verbose_ring_buf);

 	if (wlan_static_fw_event_ring_buf)
 		kfree(wlan_static_fw_event_ring_buf);

 	if (wlan_static_dhd_event_ring_buf)
 		kfree(wlan_static_dhd_event_ring_buf);

 	if (wlan_static_nan_event_ring_buf)
 		kfree(wlan_static_nan_event_ring_buf);
 #endif /* BCMDHD_PCIE */

 	pr_err("%s: Failed to mem_alloc for WLAN\n", __func__);

 	i = WLAN_SKB_BUF_NUM;

 err_skb_alloc:
 	pr_err("%s: Failed to skb_alloc for WLAN\n", __func__);
 	for (j = 0; j < i; j++)
 		dev_kfree_skb(wlan_static_skb[j]);

 	return -ENOMEM;
 }

 static int __init
 dhd_static_buf_init(void)
 {
 	dhd_init_wlan_mem();

 	return 0;
 }

 static void __exit
 dhd_static_buf_exit(void)
 {
 	int i;

 	pr_err("%s()\n", __FUNCTION__);

 	for (i = 0; i < DHD_SKB_1PAGE_BUF_NUM; i++) {
 		if (wlan_static_skb[i])
 			dev_kfree_skb(wlan_static_skb[i]);
 	}

 	for (i = DHD_SKB_1PAGE_BUF_NUM; i < WLAN_SKB_1_2PAGE_BUF_NUM; i++) {
 		if (wlan_static_skb[i])
 			dev_kfree_skb(wlan_static_skb[i]);
 	}

 #if defined(BCMDHD_SDIO)
 	if (wlan_static_skb[i])
 		dev_kfree_skb(wlan_static_skb[i]);
 #endif /* BCMDHD_SDIO */

 	if (wlan_static_prot)
 		kfree(wlan_static_prot);

 #if defined(BCMDHD_SDIO)
 	if (wlan_static_rxbuf)
 		kfree(wlan_static_rxbuf);

 	if (wlan_static_databuf)
 		kfree(wlan_static_databuf);
 #endif /* BCMDHD_SDIO */

 	if (wlan_static_osl_buf)
 		kfree(wlan_static_osl_buf);

 	if (wlan_static_scan_buf0)
 		kfree(wlan_static_scan_buf0);

 	if (wlan_static_scan_buf1)
 		kfree(wlan_static_scan_buf1);

 	if (wlan_static_dhd_info_buf)
 		kfree(wlan_static_dhd_info_buf);

 	if (wlan_static_dhd_wlfc_info_buf)
 		kfree(wlan_static_dhd_wlfc_info_buf);

 #ifdef BCMDHD_PCIE
 	if (wlan_static_if_flow_lkup)
 		kfree(wlan_static_if_flow_lkup);
 #endif /* BCMDHD_PCIE */

 	if (wlan_static_dhd_memdump_ram_buf)
 		kfree(wlan_static_dhd_memdump_ram_buf);

 	if (wlan_static_dhd_wlfc_hanger_buf)
 		kfree(wlan_static_dhd_wlfc_hanger_buf);

 	if (wlan_static_dhd_log_dump_buf)
 		kfree(wlan_static_dhd_log_dump_buf);

 	if (wlan_static_dhd_log_dump_buf_ex)
 		kfree(wlan_static_dhd_log_dump_buf_ex);

 	if (wlan_static_wl_escan_info_buf)
 		kfree(wlan_static_wl_escan_info_buf);

 #ifdef BCMDHD_PCIE
 	if (wlan_static_fw_verbose_ring_buf)
 		kfree(wlan_static_fw_verbose_ring_buf);

 	if (wlan_static_fw_event_ring_buf)
 		kfree(wlan_static_fw_event_ring_buf);

 	if (wlan_static_dhd_event_ring_buf)
 		kfree(wlan_static_dhd_event_ring_buf);

 	if (wlan_static_nan_event_ring_buf)
 		kfree(wlan_static_nan_event_ring_buf);
 #endif

 	return;
 }

 module_init(dhd_static_buf_init);

 module_exit(dhd_static_buf_exit);
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/platform_device.h>
	#include <linux/delay.h>
	#include <linux/err.h>
	#include <linux/skbuff.h>

	#define DHD_STATIC_VERSION_STR "100.10.545.7 (r826445-20200110-2)"

	#define BCMDHD_SDIO
	#define BCMDHD_PCIE

	enum dhd_prealloc_index {
	DHD_PREALLOC_PROT = 0,
	#if defined(BCMDHD_SDIO)
	DHD_PREALLOC_RXBUF = 1,
	DHD_PREALLOC_DATABUF = 2,
	#endif
	DHD_PREALLOC_OSL_BUF = 3,
	DHD_PREALLOC_SKB_BUF = 4,
	DHD_PREALLOC_WIPHY_ESCAN0 = 5,
	DHD_PREALLOC_WIPHY_ESCAN1 = 6,
	DHD_PREALLOC_DHD_INFO = 7,
	DHD_PREALLOC_DHD_WLFC_INFO = 8,
	#ifdef BCMDHD_PCIE
	DHD_PREALLOC_IF_FLOW_LKUP = 9,
	#endif
	DHD_PREALLOC_MEMDUMP_BUF = 10,
	DHD_PREALLOC_MEMDUMP_RAM = 11,
	DHD_PREALLOC_DHD_WLFC_HANGER = 12,
	DHD_PREALLOC_PKTID_MAP = 13,
	DHD_PREALLOC_PKTID_MAP_IOCTL = 14,
	DHD_PREALLOC_DHD_LOG_DUMP_BUF = 15,
	DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX = 16,
	DHD_PREALLOC_DHD_PKTLOG_DUMP_BUF = 17,
	DHD_PREALLOC_STAT_REPORT_BUF = 18,
	DHD_PREALLOC_WL_ESCAN = 19,
	DHD_PREALLOC_FW_VERBOSE_RING = 20,
	DHD_PREALLOC_FW_EVENT_RING = 21,
	DHD_PREALLOC_DHD_EVENT_RING = 22,
	DHD_PREALLOC_NAN_EVENT_RING = 23,
	DHD_PREALLOC_MAX
	};

	#define STATIC_BUF_MAX_NUM 20
	#define STATIC_BUF_SIZE (PAGE_SIZE*2)

	#ifndef CUSTOM_LOG_DUMP_BUFSIZE_MB
	#define CUSTOM_LOG_DUMP_BUFSIZE_MB 4 /* DHD_LOG_DUMP_BUF_SIZE 4 MB static memory in kernel */
	#endif /* CUSTOM_LOG_DUMP_BUFSIZE_MB */

	#define DHD_PREALLOC_PROT_SIZE (16 * 1024)
	#define DHD_PREALLOC_RXBUF_SIZE (24 * 1024)
	#define DHD_PREALLOC_DATABUF_SIZE (64 * 1024)
	#define DHD_PREALLOC_OSL_BUF_SIZE (STATIC_BUF_MAX_NUM * STATIC_BUF_SIZE)
	#define DHD_PREALLOC_WIPHY_ESCAN0_SIZE (64 * 1024)
	#define DHD_PREALLOC_DHD_INFO_SIZE (32 * 1024)
	#define DHD_PREALLOC_MEMDUMP_RAM_SIZE (1290 * 1024)
	#define DHD_PREALLOC_DHD_WLFC_HANGER_SIZE (73 * 1024)
	#define DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE (1024 * 1024 * CUSTOM_LOG_DUMP_BUFSIZE_MB)
	#define DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE (8 * 1024)
	#define DHD_PREALLOC_WL_ESCAN_SIZE (70 * 1024)
	#ifdef CONFIG_64BIT
	#define DHD_PREALLOC_IF_FLOW_LKUP_SIZE (20 * 1024 * 2)
	#else
	#define DHD_PREALLOC_IF_FLOW_LKUP_SIZE (20 * 1024)
	#endif
	#define FW_VERBOSE_RING_SIZE (256 * 1024)
	#define FW_EVENT_RING_SIZE (64 * 1024)
	#define DHD_EVENT_RING_SIZE (64 * 1024)
	#define NAN_EVENT_RING_SIZE (64 * 1024)

	#if defined(CONFIG_64BIT)
	#define WLAN_DHD_INFO_BUF_SIZE (24 * 1024)
	#define WLAN_DHD_WLFC_BUF_SIZE (64 * 1024)
	#define WLAN_DHD_IF_FLOW_LKUP_SIZE (64 * 1024)
	#else
	#define WLAN_DHD_INFO_BUF_SIZE (16 * 1024)
	#define WLAN_DHD_WLFC_BUF_SIZE (64 * 1024)
	#define WLAN_DHD_IF_FLOW_LKUP_SIZE (20 * 1024)
	#endif /* CONFIG_64BIT */
	#define WLAN_DHD_MEMDUMP_SIZE (800 * 1024)

	#define DHD_SKB_1PAGE_BUFSIZE (PAGE_SIZE*1)
	#define DHD_SKB_2PAGE_BUFSIZE (PAGE_SIZE*2)
	#define DHD_SKB_4PAGE_BUFSIZE (PAGE_SIZE*4)

	#define DHD_SKB_1PAGE_BUF_NUM 8
	#ifdef BCMDHD_PCIE
	#define DHD_SKB_2PAGE_BUF_NUM 64
	#elif defined(BCMDHD_SDIO)
	#define DHD_SKB_2PAGE_BUF_NUM 8
	#endif
	#define DHD_SKB_4PAGE_BUF_NUM 1

	/* The number is defined in linux_osl.c
	* WLAN_SKB_1_2PAGE_BUF_NUM => STATIC_PKT_1_2PAGE_NUM
	* WLAN_SKB_BUF_NUM => STATIC_PKT_MAX_NUM
	*/
	#define WLAN_SKB_1_2PAGE_BUF_NUM ((DHD_SKB_1PAGE_BUF_NUM) + \
	(DHD_SKB_2PAGE_BUF_NUM))
	#define WLAN_SKB_BUF_NUM ((WLAN_SKB_1_2PAGE_BUF_NUM) + (DHD_SKB_4PAGE_BUF_NUM))

	void *wlan_static_prot = NULL;
	void *wlan_static_rxbuf = NULL;
	void *wlan_static_databuf = NULL;
	void *wlan_static_osl_buf = NULL;
	void *wlan_static_scan_buf0 = NULL;
	void *wlan_static_scan_buf1 = NULL;
	void *wlan_static_dhd_info_buf = NULL;
	void *wlan_static_dhd_wlfc_info_buf = NULL;
	void *wlan_static_if_flow_lkup = NULL;
	void *wlan_static_dhd_memdump_ram_buf = NULL;
	void *wlan_static_dhd_wlfc_hanger_buf = NULL;
	void *wlan_static_dhd_log_dump_buf = NULL;
	void *wlan_static_dhd_log_dump_buf_ex = NULL;
	void *wlan_static_wl_escan_info_buf = NULL;
	void *wlan_static_fw_verbose_ring_buf = NULL;
	void *wlan_static_fw_event_ring_buf = NULL;
	void *wlan_static_dhd_event_ring_buf = NULL;
	void *wlan_static_nan_event_ring_buf = NULL;

	static struct sk_buff *wlan_static_skb[WLAN_SKB_BUF_NUM];

	void *dhd_wlan_mem_prealloc(int section, unsigned long size)
	{
	pr_err("%s: sectoin %d, %ld\n", __func__, section, size);
	if (section == DHD_PREALLOC_PROT)
	return wlan_static_prot;

	#if defined(BCMDHD_SDIO)
	if (section == DHD_PREALLOC_RXBUF)
	return wlan_static_rxbuf;

	if (section == DHD_PREALLOC_DATABUF)
	return wlan_static_databuf;
	#endif /* BCMDHD_SDIO */

	if (section == DHD_PREALLOC_SKB_BUF)
	return wlan_static_skb;

	if (section == DHD_PREALLOC_WIPHY_ESCAN0)
	return wlan_static_scan_buf0;

	if (section == DHD_PREALLOC_WIPHY_ESCAN1)
	return wlan_static_scan_buf1;

	if (section == DHD_PREALLOC_OSL_BUF) {
	if (size > DHD_PREALLOC_OSL_BUF_SIZE) {
	pr_err("request OSL_BUF(%lu) > %ld\n",
	size, DHD_PREALLOC_OSL_BUF_SIZE);
	return NULL;
	}
	return wlan_static_osl_buf;
	}

	if (section == DHD_PREALLOC_DHD_INFO) {
	if (size > DHD_PREALLOC_DHD_INFO_SIZE) {
	pr_err("request DHD_INFO size(%lu) > %d\n",
	size, DHD_PREALLOC_DHD_INFO_SIZE);
	return NULL;
	}
	return wlan_static_dhd_info_buf;
	}
	if (section == DHD_PREALLOC_DHD_WLFC_INFO) {
	if (size > WLAN_DHD_WLFC_BUF_SIZE) {
	pr_err("request DHD_WLFC_INFO size(%lu) > %d\n",
	size, WLAN_DHD_WLFC_BUF_SIZE);
	return NULL;
	}
	return wlan_static_dhd_wlfc_info_buf;
	}
	#ifdef BCMDHD_PCIE
	if (section == DHD_PREALLOC_IF_FLOW_LKUP) {
	if (size > DHD_PREALLOC_IF_FLOW_LKUP_SIZE) {
	pr_err("request DHD_IF_FLOW_LKUP size(%lu) > %d\n",
	size, DHD_PREALLOC_IF_FLOW_LKUP_SIZE);
	return NULL;
	}

	return wlan_static_if_flow_lkup;
	}
	#endif /* BCMDHD_PCIE */
	if (section == DHD_PREALLOC_MEMDUMP_RAM) {
	if (size > DHD_PREALLOC_MEMDUMP_RAM_SIZE) {
	pr_err("request DHD_PREALLOC_MEMDUMP_RAM_SIZE(%lu) > %d\n",
	size, DHD_PREALLOC_MEMDUMP_RAM_SIZE);
	return NULL;
	}

	return wlan_static_dhd_memdump_ram_buf;
	}
	if (section == DHD_PREALLOC_DHD_WLFC_HANGER) {
	if (size > DHD_PREALLOC_DHD_WLFC_HANGER_SIZE) {
	pr_err("request DHD_WLFC_HANGER size(%lu) > %d\n",
	size, DHD_PREALLOC_DHD_WLFC_HANGER_SIZE);
	return NULL;
	}
	return wlan_static_dhd_wlfc_hanger_buf;
	}
	if (section == DHD_PREALLOC_DHD_LOG_DUMP_BUF) {
	if (size > DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE) {
	pr_err("request DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE(%lu) > %d\n",
	size, DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE);
	return NULL;
	}

	return wlan_static_dhd_log_dump_buf;
	}
	if (section == DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX) {
	if (size > DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE) {
	pr_err("request DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE(%lu) > %d\n",
	size, DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE);
	return NULL;
	}

	return wlan_static_dhd_log_dump_buf_ex;
	}
	if (section == DHD_PREALLOC_WL_ESCAN) {
	if (size > DHD_PREALLOC_WL_ESCAN_SIZE) {
	pr_err("request DHD_PREALLOC_WL_ESCAN_SIZE(%lu) > %d\n",
	size, DHD_PREALLOC_WL_ESCAN_SIZE);
	return NULL;
	}

	return wlan_static_wl_escan_info_buf;
	}
	if (section == DHD_PREALLOC_FW_VERBOSE_RING) {
	if (size > FW_VERBOSE_RING_SIZE) {
	pr_err("request DHD_PREALLOC_FW_VERBOSE_RING(%lu) > %d\n",
	size, FW_VERBOSE_RING_SIZE);
	return NULL;
	}

	return wlan_static_fw_verbose_ring_buf;
	}
	if (section == DHD_PREALLOC_FW_EVENT_RING) {
	if (size > FW_EVENT_RING_SIZE) {
	pr_err("request DHD_PREALLOC_FW_EVENT_RING(%lu) > %d\n",
	size, FW_EVENT_RING_SIZE);
	return NULL;
	}

	return wlan_static_fw_event_ring_buf;
	}
	if (section == DHD_PREALLOC_DHD_EVENT_RING) {
	if (size > DHD_EVENT_RING_SIZE) {
	pr_err("request DHD_PREALLOC_DHD_EVENT_RING(%lu) > %d\n",
	size, DHD_EVENT_RING_SIZE);
	return NULL;
	}

	return wlan_static_dhd_event_ring_buf;
	}
	if (section == DHD_PREALLOC_NAN_EVENT_RING) {
	if (size > NAN_EVENT_RING_SIZE) {
	pr_err("request DHD_PREALLOC_NAN_EVENT_RING(%lu) > %d\n",
	size, NAN_EVENT_RING_SIZE);
	return NULL;
	}

	return wlan_static_nan_event_ring_buf;
	}
	if ((section < 0) \|\| (section > DHD_PREALLOC_MAX))
	pr_err("request section id(%d) is out of max index %d\n",
	section, DHD_PREALLOC_MAX);

	pr_err("%s: failed to alloc section %d, size=%ld\n",
	__func__, section, size);

	return NULL;
	}
	EXPORT_SYMBOL(dhd_wlan_mem_prealloc);

	static int dhd_init_wlan_mem(void)
	{
	int i;
	int j;
	printk(KERN_ERR "%s(): %s\n", __func__, DHD_STATIC_VERSION_STR);

	for (i = 0; i < DHD_SKB_1PAGE_BUF_NUM; i++) {
	wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_1PAGE_BUFSIZE);
	if (!wlan_static_skb[i]) {
	goto err_skb_alloc;
	}
	pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
	DHD_PREALLOC_SKB_BUF, i, DHD_SKB_1PAGE_BUFSIZE);
	}

	for (i = DHD_SKB_1PAGE_BUF_NUM; i < WLAN_SKB_1_2PAGE_BUF_NUM; i++) {
	wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_2PAGE_BUFSIZE);
	if (!wlan_static_skb[i]) {
	goto err_skb_alloc;
	}
	pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
	DHD_PREALLOC_SKB_BUF, i, DHD_SKB_2PAGE_BUFSIZE);
	}

	#if defined(BCMDHD_SDIO)
	wlan_static_skb[i] = dev_alloc_skb(DHD_SKB_4PAGE_BUFSIZE);
	if (!wlan_static_skb[i])
	goto err_skb_alloc;
	pr_err("%s: sectoin %d skb[%d], size=%ld\n", __func__,
	DHD_PREALLOC_SKB_BUF, i, DHD_SKB_4PAGE_BUFSIZE);
	#endif /* BCMDHD_SDIO */

	wlan_static_prot = kmalloc(DHD_PREALLOC_PROT_SIZE, GFP_KERNEL);
	if (!wlan_static_prot)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_PROT, DHD_PREALLOC_PROT_SIZE);

	#if defined(BCMDHD_SDIO)
	wlan_static_rxbuf = kmalloc(DHD_PREALLOC_RXBUF_SIZE, GFP_KERNEL);
	if (!wlan_static_rxbuf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_RXBUF, DHD_PREALLOC_RXBUF_SIZE);

	wlan_static_databuf = kmalloc(DHD_PREALLOC_DATABUF_SIZE, GFP_KERNEL);
	if (!wlan_static_databuf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DATABUF, DHD_PREALLOC_DATABUF_SIZE);
	#endif /* BCMDHD_SDIO */

	wlan_static_osl_buf = kmalloc(DHD_PREALLOC_OSL_BUF_SIZE, GFP_KERNEL);
	if (!wlan_static_osl_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%ld\n", __func__,
	DHD_PREALLOC_OSL_BUF, DHD_PREALLOC_OSL_BUF_SIZE);

	wlan_static_scan_buf0 = kmalloc(DHD_PREALLOC_WIPHY_ESCAN0_SIZE, GFP_KERNEL);
	if (!wlan_static_scan_buf0)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_WIPHY_ESCAN0, DHD_PREALLOC_WIPHY_ESCAN0_SIZE);

	wlan_static_dhd_info_buf = kmalloc(DHD_PREALLOC_DHD_INFO_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_info_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_INFO, DHD_PREALLOC_DHD_INFO_SIZE);

	wlan_static_dhd_wlfc_info_buf = kmalloc(WLAN_DHD_WLFC_BUF_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_wlfc_info_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_WLFC_INFO, WLAN_DHD_WLFC_BUF_SIZE);

	#ifdef BCMDHD_PCIE
	wlan_static_if_flow_lkup = kmalloc(DHD_PREALLOC_IF_FLOW_LKUP_SIZE, GFP_KERNEL);
	if (!wlan_static_if_flow_lkup)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_IF_FLOW_LKUP, DHD_PREALLOC_IF_FLOW_LKUP_SIZE);
	#endif /* BCMDHD_PCIE */

	wlan_static_dhd_memdump_ram_buf = kmalloc(DHD_PREALLOC_MEMDUMP_RAM_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_memdump_ram_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_MEMDUMP_RAM, DHD_PREALLOC_MEMDUMP_RAM_SIZE);

	wlan_static_dhd_wlfc_hanger_buf = kmalloc(DHD_PREALLOC_DHD_WLFC_HANGER_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_wlfc_hanger_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_WLFC_HANGER, DHD_PREALLOC_DHD_WLFC_HANGER_SIZE);

	wlan_static_dhd_log_dump_buf = kmalloc(DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_log_dump_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_LOG_DUMP_BUF, DHD_PREALLOC_DHD_LOG_DUMP_BUF_SIZE);

	wlan_static_dhd_log_dump_buf_ex = kmalloc(DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_log_dump_buf_ex)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX, DHD_PREALLOC_DHD_LOG_DUMP_BUF_EX_SIZE);

	wlan_static_wl_escan_info_buf = kmalloc(DHD_PREALLOC_WL_ESCAN_SIZE, GFP_KERNEL);
	if (!wlan_static_wl_escan_info_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_WL_ESCAN, DHD_PREALLOC_WL_ESCAN_SIZE);

	wlan_static_fw_verbose_ring_buf = kmalloc(FW_VERBOSE_RING_SIZE, GFP_KERNEL);
	if (!wlan_static_fw_verbose_ring_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_FW_VERBOSE_RING, FW_VERBOSE_RING_SIZE);

	wlan_static_fw_event_ring_buf = kmalloc(FW_EVENT_RING_SIZE, GFP_KERNEL);
	if (!wlan_static_fw_event_ring_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_FW_EVENT_RING, FW_EVENT_RING_SIZE);

	wlan_static_dhd_event_ring_buf = kmalloc(DHD_EVENT_RING_SIZE, GFP_KERNEL);
	if (!wlan_static_dhd_event_ring_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_DHD_EVENT_RING, DHD_EVENT_RING_SIZE);

	wlan_static_nan_event_ring_buf = kmalloc(NAN_EVENT_RING_SIZE, GFP_KERNEL);
	if (!wlan_static_nan_event_ring_buf)
	goto err_mem_alloc;
	pr_err("%s: sectoin %d, size=%d\n", __func__,
	DHD_PREALLOC_NAN_EVENT_RING, NAN_EVENT_RING_SIZE);

	return 0;

	err_mem_alloc:

	if (wlan_static_prot)
	kfree(wlan_static_prot);

	#if defined(BCMDHD_SDIO)
	if (wlan_static_rxbuf)
	kfree(wlan_static_rxbuf);

	if (wlan_static_databuf)
	kfree(wlan_static_databuf);
	#endif /* BCMDHD_SDIO */

	if (wlan_static_osl_buf)
	kfree(wlan_static_osl_buf);

	if (wlan_static_scan_buf0)
	kfree(wlan_static_scan_buf0);

	if (wlan_static_scan_buf1)
	kfree(wlan_static_scan_buf1);

	if (wlan_static_dhd_info_buf)
	kfree(wlan_static_dhd_info_buf);

	if (wlan_static_dhd_wlfc_info_buf)
	kfree(wlan_static_dhd_wlfc_info_buf);

	#ifdef BCMDHD_PCIE
	if (wlan_static_if_flow_lkup)
	kfree(wlan_static_if_flow_lkup);
	#endif /* BCMDHD_PCIE */

	if (wlan_static_dhd_memdump_ram_buf)
	kfree(wlan_static_dhd_memdump_ram_buf);

	if (wlan_static_dhd_wlfc_hanger_buf)
	kfree(wlan_static_dhd_wlfc_hanger_buf);

	if (wlan_static_dhd_log_dump_buf)
	kfree(wlan_static_dhd_log_dump_buf);

	if (wlan_static_dhd_log_dump_buf_ex)
	kfree(wlan_static_dhd_log_dump_buf_ex);

	if (wlan_static_wl_escan_info_buf)
	kfree(wlan_static_wl_escan_info_buf);

	#ifdef BCMDHD_PCIE
	if (wlan_static_fw_verbose_ring_buf)
	kfree(wlan_static_fw_verbose_ring_buf);

	if (wlan_static_fw_event_ring_buf)
	kfree(wlan_static_fw_event_ring_buf);

	if (wlan_static_dhd_event_ring_buf)
	kfree(wlan_static_dhd_event_ring_buf);

	if (wlan_static_nan_event_ring_buf)
	kfree(wlan_static_nan_event_ring_buf);
	#endif /* BCMDHD_PCIE */

	pr_err("%s: Failed to mem_alloc for WLAN\n", __func__);

	i = WLAN_SKB_BUF_NUM;

	err_skb_alloc:
	pr_err("%s: Failed to skb_alloc for WLAN\n", __func__);
	for (j = 0; j < i; j++)
	dev_kfree_skb(wlan_static_skb[j]);

	return -ENOMEM;
	}

	static int __init
	dhd_static_buf_init(void)
	{
	dhd_init_wlan_mem();

	return 0;
	}

	static void __exit
	dhd_static_buf_exit(void)
	{
	int i;

	pr_err("%s()\n", __FUNCTION__);

	for (i = 0; i < DHD_SKB_1PAGE_BUF_NUM; i++) {
	if (wlan_static_skb[i])
	dev_kfree_skb(wlan_static_skb[i]);
	}

	for (i = DHD_SKB_1PAGE_BUF_NUM; i < WLAN_SKB_1_2PAGE_BUF_NUM; i++) {
	if (wlan_static_skb[i])
	dev_kfree_skb(wlan_static_skb[i]);
	}

	#if defined(BCMDHD_SDIO)
	if (wlan_static_skb[i])
	dev_kfree_skb(wlan_static_skb[i]);
	#endif /* BCMDHD_SDIO */

	if (wlan_static_prot)
	kfree(wlan_static_prot);

	#if defined(BCMDHD_SDIO)
	if (wlan_static_rxbuf)
	kfree(wlan_static_rxbuf);

	if (wlan_static_databuf)
	kfree(wlan_static_databuf);
	#endif /* BCMDHD_SDIO */

	if (wlan_static_osl_buf)
	kfree(wlan_static_osl_buf);

	if (wlan_static_scan_buf0)
	kfree(wlan_static_scan_buf0);

	if (wlan_static_scan_buf1)
	kfree(wlan_static_scan_buf1);

	if (wlan_static_dhd_info_buf)
	kfree(wlan_static_dhd_info_buf);

	if (wlan_static_dhd_wlfc_info_buf)
	kfree(wlan_static_dhd_wlfc_info_buf);

	#ifdef BCMDHD_PCIE
	if (wlan_static_if_flow_lkup)
	kfree(wlan_static_if_flow_lkup);
	#endif /* BCMDHD_PCIE */

	if (wlan_static_dhd_memdump_ram_buf)
	kfree(wlan_static_dhd_memdump_ram_buf);

	if (wlan_static_dhd_wlfc_hanger_buf)
	kfree(wlan_static_dhd_wlfc_hanger_buf);

	if (wlan_static_dhd_log_dump_buf)
	kfree(wlan_static_dhd_log_dump_buf);

	if (wlan_static_dhd_log_dump_buf_ex)
	kfree(wlan_static_dhd_log_dump_buf_ex);

	if (wlan_static_wl_escan_info_buf)
	kfree(wlan_static_wl_escan_info_buf);

	#ifdef BCMDHD_PCIE
	if (wlan_static_fw_verbose_ring_buf)
	kfree(wlan_static_fw_verbose_ring_buf);

	if (wlan_static_fw_event_ring_buf)
	kfree(wlan_static_fw_event_ring_buf);

	if (wlan_static_dhd_event_ring_buf)
	kfree(wlan_static_dhd_event_ring_buf);

	if (wlan_static_nan_event_ring_buf)
	kfree(wlan_static_nan_event_ring_buf);
	#endif

	return;
	}

	module_init(dhd_static_buf_init);

	module_exit(dhd_static_buf_exit);