Bump MEMP_NUM_SYS_TIMEOUT to fix mDNS on Legacy IP (#3)

In 2.2.0, mDNS needs ten extra timeouts. We didn't give it enough, which
means it didn't respond on Legacy IP because the 'recent multicast' flag
never got reset by the timer.

package.json

@@ -0,0 +1,5 @@
+{
+  "name": "library-lwip",
+  "version": "2.2.0-bdk",
+  "description": "lwIP - A Lightweight TCPIP stack"
+}

port/arch/cc.h

@@ -0,0 +1,110 @@
+/*
+ * cc.h       - Architecture environment, some compiler specific, some
+ *             environment specific (probably should move env stuff 
+ *             to sys_arch.h.)
+ *
+ * Typedefs for the types used by lwip -
+ *   u8_t, s8_t, u16_t, s16_t, u32_t, s32_t, mem_ptr_t
+ *
+ * Compiler hints for packing lwip's structures -
+ *   PACK_STRUCT_FIELD(x)
+ *   PACK_STRUCT_STRUCT
+ *   PACK_STRUCT_BEGIN
+ *   PACK_STRUCT_END
+ *
+ * Platform specific diagnostic output -
+ *   LWIP_PLATFORM_DIAG(x)    - non-fatal, print a message.
+ *   LWIP_PLATFORM_ASSERT(x)  - fatal, print message and abandon execution.
+ *   Portability defines for printf formatters:
+ *   U16_F, S16_F, X16_F, U32_F, S32_F, X32_F, SZT_F
+ *
+ * "lightweight" synchronization mechanisms -
+ *   SYS_ARCH_DECL_PROTECT(x) - declare a protection state variable.
+ *   SYS_ARCH_PROTECT(x)      - enter protection mode.
+ *   SYS_ARCH_UNPROTECT(x)    - leave protection mode.
+ *
+ * If the compiler does not provide memset() this file must include a
+ * definition of it, or include a file which defines it.
+ *
+ * This file must either include a system-local <errno.h> which defines
+ * the standard *nix error codes, or it should #define LWIP_PROVIDE_ERRNO
+ * to make lwip/arch.h define the codes which are used throughout.
+ */
+ 
+#ifndef __CC_H__
+#define __CC_H__
+
+#include <stdint.h>
+#include <stdio.h>
+
+/*
+ *   Typedefs for the types used by lwip -
+ *   u8_t, s8_t, u16_t, s16_t, u32_t, s32_t, mem_ptr_t
+ */
+typedef unsigned   char    u8_t;      /* Unsigned 8 bit quantity         */
+typedef signed     char    s8_t;      /* Signed    8 bit quantity        */
+typedef unsigned   short   u16_t;     /* Unsigned 16 bit quantity        */
+typedef signed     short   s16_t;     /* Signed   16 bit quantity        */
+typedef unsigned   long    u32_t;     /* Unsigned 32 bit quantity        */
+typedef signed     long    s32_t;     /* Signed   32 bit quantity        */
+//typedef unsigned   long    mem_ptr_t; /* Unsigned 32 bit quantity        */
+typedef int			       intptr_t;
+typedef unsigned int       uintptr_t;
+typedef int sys_prot_t;
+
+
+
+#if defined(__GNUC__)
+ #define PACK_STRUCT_BEGIN
+ #define PACK_STRUCT_STRUCT __attribute__((packed))
+ #define PACK_STRUCT_FIELD(x) x
+#elif defined(__ICCARM__)
+ #define PACK_STRUCT_BEGIN __packed
+ #define PACK_STRUCT_STRUCT
+ #define PACK_STRUCT_FIELD(x) x
+#else
+ #define PACK_STRUCT_BEGIN
+ #define PACK_STRUCT_STRUCT
+ #define PACK_STRUCT_FIELD(x) x
+#endif
+
+
+/*
+ *  Platform specific diagnostic output -
+ *   LWIP_PLATFORM_DIAG(x)    - non-fatal, print a message.
+ *   LWIP_PLATFORM_ASSERT(x)  - fatal, print message and abandon execution.
+ *   Portability defines for printf formatters:
+ *   U16_F, S16_F, X16_F, U32_F, S32_F, X32_F, SZT_F
+ */
+#ifndef LWIP_PLATFORM_ASSERT
+#define LWIP_PLATFORM_ASSERT(x) \
+    do \
+    {   printf("Assertion \"%s\" failed at line %d in %s\n", x, __LINE__, __FILE__); \
+    } while(0)
+#endif
+
+#ifndef LWIP_PLATFORM_DIAG
+#define LWIP_PLATFORM_DIAG(x) do {printf x ;} while(0)
+#endif 
+ 
+#define U16_F "4d"
+#define S16_F "4d"
+#define X16_F "4x"
+#define U32_F "8ld"
+#define S32_F "8ld"
+#define X32_F "8lx"
+
+/*
+ * unknow defination
+ */
+// cup byte order 
+#ifndef BYTE_ORDER
+#define BYTE_ORDER          LITTLE_ENDIAN
+#endif
+
+extern int bk_rand();		/* FIXME: move to right place */
+
+#define LWIP_RAND()        ((uint32_t)bk_rand())
+#endif
+// eof
+

port/arch/sys_arch.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef __SYS_RTXC_H__
+#define __SYS_RTXC_H__
+
+#include <FreeRTOS.h>
+#include <queue.h>
+#include <semphr.h>
+#include <task.h>
+
+#define SYS_MBOX_NULL (xQueueHandle)0
+#define SYS_SEM_NULL  (xSemaphoreHandle)0
+#define SYS_DEFAULT_THREAD_STACK_DEPTH	configMINIMAL_STACK_SIZE
+
+typedef xSemaphoreHandle sys_sem_t;
+typedef xQueueHandle sys_mbox_t;
+typedef xTaskHandle sys_thread_t;
+typedef void * sys_mutex_t;
+
+typedef struct _sys_arch_state_t
+{
+	// Task creation data.
+	char cTaskName[configMAX_TASK_NAME_LEN];
+	unsigned short nStackDepth;
+	unsigned short nTaskCount;
+} sys_arch_state_t;
+
+/* Message queue constants. */
+#define archMESG_QUEUE_LENGTH	( 32 )
+#endif /* __SYS_RTXC_H__ */
+

port/ethernetif.c

@@ -0,0 +1,353 @@
+/**
+ * @file
+ * Ethernet Interface Skeleton
+ *
+ */
+
+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+/*
+ * This file is a skeleton for developing Ethernet network interface
+ * drivers for lwIP. Add code to the low_level functions and do a
+ * search-and-replace for the word "ethernetif" to replace it with
+ * something that better describes your network interface.
+ */
+
+#include "include.h"
+
+#include "lwip/opt.h"
+#include "lwip/def.h"
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include "lwip/sys.h"
+#include <lwip/stats.h>
+#include <lwip/snmp.h>
+#include "lwip/ethip6.h"
+#include "ethernetif.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "netif/etharp.h"
+
+#include "lwip_netif_address.h"
+
+#include "sa_station.h"
+
+#include "drv_model_pub.h"
+#include "mem_pub.h"
+#include "common.h"
+
+#include "hostapd_cfg.h"
+
+#include "sk_intf.h"
+#include "rw_pub.h"
+#include "rtos_pub.h"
+#include "param_config.h"
+
+/* Define those to better describe your network interface. */
+#define IFNAME0 'e'
+#define IFNAME1 'n'
+
+#include "uart_pub.h"
+
+#define ETH_INTF_DEBUG
+#ifdef ETH_INTF_DEBUG
+#define ETH_INTF_PRT      warning_prf
+#define ETH_INTF_WARN     warning_prf
+#define ETH_INTF_FATAL    fatal_prf
+#else
+#define ETH_INTF_PRT      null_prf
+#define ETH_INTF_WARN     null_prf
+#define ETH_INTF_FATAL    null_prf
+#endif
+
+extern int bmsg_tx_sender(struct pbuf *p, uint32_t vif_idx);
+    
+/* Forward declarations. */
+void ethernetif_input(int iface, struct pbuf *p);
+
+/**
+ * In this function, the hardware should be initialized.
+ * Called from ethernetif_init().
+ *
+ * @param netif the already initialized lwip network interface structure
+ *        for this ethernetif
+ */
+
+const char wlan_name[][6] = 
+{
+    "wlan0\0",
+    "wlan1\0",
+    "wlan2\0",
+    "wlan3\0",    
+};
+static void low_level_init(struct netif *netif)
+{
+    VIF_INF_PTR vif_entry = (VIF_INF_PTR)(netif->state);
+    u8 *macptr = (u8*)&vif_entry->mac_addr;
+    
+#if LWIP_NETIF_HOSTNAME
+    /* Initialize interface hostname */
+    netif->hostname = (char*)&wlan_name[vif_entry->index];
+#endif /* LWIP_NETIF_HOSTNAME */    
+
+	//wifi_get_mac_address((char *)wireless_mac, type);
+	
+    /* set MAC hardware address length */
+    ETH_INTF_PRT("enter low level!\r\n");
+    ETH_INTF_PRT("mac %2x:%2x:%2x:%2x:%2x:%2x\r\n", macptr[0], macptr[1], macptr[2],
+                 macptr[3], macptr[4], macptr[5]);
+    
+    netif->hwaddr_len = ETHARP_HWADDR_LEN;
+    os_memcpy(netif->hwaddr, macptr, ETHARP_HWADDR_LEN);
+    /* maximum transfer unit */
+    netif->mtu = 1500;
+    /* device capabilities */
+    /* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */
+    netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+#ifdef CONFIG_IPV6
+    netif->flags |= NETIF_FLAG_MLD6;
+#endif
+    ETH_INTF_PRT("leave low level!\r\n");
+}
+
+/**
+ * This function should do the actual transmission of the packet. The packet is
+ * contained in the pbuf that is passed to the function. This pbuf
+ * might be chained.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
+ * @return ERR_OK if the packet could be sent
+ *         an err_t value if the packet couldn't be sent
+ *
+ * @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to
+ *       strange results. You might consider waiting for space in the DMA queue
+ *       to become availale since the stack doesn't retry to send a packet
+ *       dropped because of memory failure (except for the TCP timers).
+ */
+static err_t low_level_output(struct netif *netif, struct pbuf *p)
+{
+	int ret;
+	err_t err = ERR_OK;
+    uint8_t vif_idx = rwm_mgmt_get_netif2vif(netif);
+
+	//os_printf("output:%x\r\n", p);
+	ret = bmsg_tx_sender(p, (uint32_t)vif_idx);
+	if(0 != ret)
+	{
+		err = ERR_TIMEOUT;
+	}
+
+    return err;
+}
+
+/**
+ * This function should be called when a packet is ready to be read
+ * from the interface. It uses the function low_level_input() that
+ * should handle the actual reception of bytes from the network
+ * interface. Then the type of the received packet is determined and
+ * the appropriate input function is called.
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ */
+void
+ethernetif_input(int iface, struct pbuf *p)
+{
+    struct eth_hdr *ethhdr;
+	struct netif *netif;
+
+	if (p->len <= SIZEOF_ETH_HDR) {
+		pbuf_free(p);
+		return; 
+	}   
+
+	netif = rwm_mgmt_get_vif2netif((uint8_t)iface);
+    if(!netif) {
+        //ETH_INTF_PRT("ethernetif_input no netif found %d\r\n", iface);
+        pbuf_free(p);
+        p = NULL;
+        return;
+    }
+        
+    /* points to packet payload, which starts with an Ethernet header */
+    ethhdr = p->payload;
+
+    /* Ignore our own multicast packets when they come back from the AP */
+    if ((ethhdr->dest.addr[0] & 0x01) /* multicast */ &&
+	!memcmp(ethhdr->src.addr, netif->hwaddr, ETH_HWADDR_LEN)) {
+	    pbuf_free(p);
+	    p = NULL;
+	    return;
+    }
+    switch (htons(ethhdr->type))
+    {
+        /* IP or ARP packet? */
+    case ETHTYPE_IP:
+    case ETHTYPE_ARP:
+    case ETHTYPE_IPV6:
+#if PPPOE_SUPPORT
+        /* PPPoE packet? */
+    case ETHTYPE_PPPOEDISC:
+    case ETHTYPE_PPPOE:
+#endif /* PPPOE_SUPPORT */
+        /* full packet send to tcpip_thread to process */
+        if (netif->input(p, netif) != ERR_OK)    // ethernet_input
+        {
+            LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\r\n"));
+            pbuf_free(p);
+            p = NULL;
+        }
+        break;
+		
+    case ETH_P_EAPOL:
+	 	ke_l2_packet_tx(p->payload, p->len, iface);
+		pbuf_free(p);
+		p = NULL;
+        break;
+		
+    default:
+        pbuf_free(p);
+        p = NULL;
+        break;
+    }
+
+}
+
+/**
+ * Should be called at the beginning of the program to set up the
+ * network interface. It calls the function low_level_init() to do the
+ * actual setup of the hardware.
+ *
+ * This function should be passed as a parameter to netif_add().
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return ERR_OK if the loopif is initialized
+ *         ERR_MEM if private data couldn't be allocated
+ *         any other err_t on error
+ */
+err_t
+ethernetif_init(struct netif *netif)
+{
+    LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+    /*
+     * Initialize the snmp variables and counters inside the struct netif.
+     * The last argument should be replaced with your link speed, in units
+     * of bits per second.
+     */
+    NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 10000000);
+
+    netif->name[0] = IFNAME0;
+    netif->name[1] = IFNAME1;
+    /* We directly use etharp_output() here to save a function call.
+     * You can instead declare your own function an call etharp_output()
+     * from it if you have to do some checks before sending (e.g. if link
+     * is available...) */
+    netif->output = etharp_output;
+    netif->linkoutput = low_level_output;
+#ifdef CONFIG_IPV6
+    netif->output_ip6 = ethip6_output;
+#endif
+
+    /* initialize the hardware */
+    low_level_init(netif);
+
+    return ERR_OK;
+}
+
+/**
+ * Should be called at the beginning of the program to set up the
+ * network interface. It calls the function low_level_init() to do the
+ * actual setup of the hardware.
+ *
+ * This function should be passed as a parameter to netifapi_netif_add().
+ *
+ * @param netif the lwip network interface structure for this ethernetif
+ * @return ERR_OK if the loopif is initialized
+ *         ERR_MEM if private data couldn't be allocated
+ *         any other err_t on error
+ */
+err_t lwip_netif_init(struct netif *netif)
+{
+	LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+	/*
+	 * Initialize the snmp variables and counters inside the struct netif.
+	 * The last argument should be replaced with your link speed, in units
+	 * of bits per second.
+	 */
+	NETIF_INIT_SNMP(netif, snmp_ifType_ethernet_csmacd, 10000000);
+
+	netif->name[0] = IFNAME0;
+	netif->name[1] = IFNAME1;
+	/* We directly use etharp_output() here to save a function call.
+	 * You can instead declare your own function an call etharp_output()
+	 * from it if you have to do some checks before sending (e.g. if link
+	 * is available...) */
+	netif->output = etharp_output;
+	netif->linkoutput = low_level_output;
+#ifdef CONFIG_IPV6
+	netif->output_ip6 = ethip6_output;
+#endif
+
+	/* initialize the hardware */
+	low_level_init(netif);
+	return ERR_OK;
+}
+
+err_t lwip_netif_uap_init(struct netif *netif)
+{
+	LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+	//netif->state = NULL;
+	netif->name[0] = 'u';
+	netif->name[1] = 'a';
+	/* We directly use etharp_output() here to save a function call.
+	 * You can instead declare your own function an call etharp_output()
+	 * from it if you have to do some checks before sending (e.g. if link
+	 * is available...) */
+	netif->output = etharp_output;
+	netif->linkoutput = low_level_output;
+#ifdef CONFIG_IPV6
+	netif->output_ip6 = ethip6_output;
+#endif
+
+	/* initialize the hardware */
+	low_level_init(netif);
+
+	return ERR_OK;
+}
+
+// eof

port/ethernetif.h

@@ -0,0 +1,13 @@
+#ifndef __ETHERNETIF_H__
+#define __ETHERNETIF_H__
+
+
+#include "lwip/err.h"
+#include "lwip/netif.h"
+
+
+void ethernetif_recv(struct netif *netif, int total_len);
+err_t ethernetif_init(struct netif *netif);
+
+
+#endif 

port/lwip_intf.h

@@ -0,0 +1,17 @@
+#ifndef __LWIP_INTF_H__
+#define __LWIP_INTF_H__
+
+#define LWIP_INTF_DEBUG
+#ifdef LWIP_INTF_DEBUG
+#define LWIP_INTF_PRT      warning_prf
+#define LWIP_INTF_WARN     warning_prf
+#define LWIP_INTF_FATAL    fatal_prf
+#else
+#define LWIP_INTF_PRT      null_prf
+#define LWIP_INTF_WARN     null_prf
+#define LWIP_INTF_FATAL    null_prf
+#endif
+
+#endif
+// eof
+

port/lwip_netif_address.h

@@ -0,0 +1,59 @@
+#ifndef _MXCHIP_NETIF_ADDR_H_
+#define _MXCHIP_NETIF_ADDR_H_
+
+/** MLAN BSS type */
+typedef enum _wifi_interface_type
+{
+    WIFI_INTERFACE_TYPE_STA = 0,
+    WIFI_INTERFACE_TYPE_UAP = 1,
+
+    WIFI_INTERFACE_TYPE_ANY = 0xff,
+} wifi_interface_type;
+
+#define ADDR_TYPE_STATIC 1
+#define ADDR_TYPE_DHCP   0
+
+/** This data structure represents an IPv4 address */
+struct ipv4_config {
+	/** DHCP_Disable DHCP_Client DHCP_Server */
+	unsigned addr_type;
+	/** The system's IP address in network order. */
+	unsigned address;
+	/** The system's default gateway in network order. */
+	unsigned gw;
+	/** The system's subnet mask in network order. */
+	unsigned netmask;
+	/** The system's primary dns server in network order. */
+	unsigned dns1;
+	/** The system's secondary dns server in network order. */
+	unsigned dns2;
+};
+
+#ifdef CONFIG_IPV6
+struct ipv6_config
+{
+    /** The system's IPv6 address in network order. */
+    uint32_t addr[4];
+    /** The address type: linklocal, site-local or global. */
+    unsigned char addr_type;
+    /** The state of IPv6 address (Tentative, Preferred, etc). */
+    unsigned char addr_state;
+};
+#endif
+/** Network IP configuration.
+ *
+ *  This data structure represents the network IP configuration
+ *  for IPv4 as well as IPv6 addresses
+ */
+struct wlan_ip_config {
+#ifdef CONFIG_IPV6
+	/** The network IPv6 address configuration that should be
+	 * associated with this interface. */
+	struct ipv6_config ipv6[LWIP_IPV6_NUM_ADDRESSES];
+#endif
+	/** The network IPv4 address configuration that should be
+	 * associated with this interface. */
+	struct ipv4_config ipv4;
+};
+
+#endif

port/lwipopts.h

@@ -0,0 +1,462 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef __LWIPOPTS_H__
+#define __LWIPOPTS_H__
+
+#include "sys_config.h"
+
+/**
+ * Loopback demo related options.
+ */
+#define LWIP_NETIF_LOOPBACK             1
+#define LWIP_HAVE_LOOPIF                1
+#define LWIP_NETIF_LOOPBACK_MULTITHREADING       1
+#define LWIP_LOOPBACK_MAX_PBUFS         8
+
+#define TCPIP_THREAD_NAME               "tcp/ip"
+#define TCPIP_THREAD_STACKSIZE          512
+#define TCPIP_THREAD_PRIO               7
+
+#define DEFAULT_THREAD_STACKSIZE        200
+#define DEFAULT_THREAD_PRIO             1
+
+/* Disable lwIP asserts */
+#define LWIP_NOASSERT			        1
+
+#define LWIP_DEBUG                      0
+#define LWIP_DEBUG_TRACE                0
+#define SOCKETS_DEBUG                   LWIP_DBG_OFF
+#define IP_DEBUG                        LWIP_DBG_OFF
+#define ETHARP_DEBUG                    LWIP_DBG_OFF
+#define NETIF_DEBUG                     LWIP_DBG_OFF
+#define PBUF_DEBUG                      LWIP_DBG_OFF
+#define MEMP_DEBUG                      LWIP_DBG_OFF
+#define API_LIB_DEBUG                   LWIP_DBG_OFF
+#define API_MSG_DEBUG                   LWIP_DBG_OFF
+#define ICMP_DEBUG                      LWIP_DBG_OFF
+#define IGMP_DEBUG                      LWIP_DBG_OFF
+#define INET_DEBUG                      LWIP_DBG_OFF
+#define IP_REASS_DEBUG                  LWIP_DBG_OFF
+#define RAW_DEBUG                       LWIP_DBG_OFF
+#define MEM_DEBUG                       LWIP_DBG_OFF
+#define SYS_DEBUG                       LWIP_DBG_OFF
+#define TCP_DEBUG                       LWIP_DBG_OFF
+#define TCP_INPUT_DEBUG                 LWIP_DBG_OFF
+#define TCP_FR_DEBUG                    LWIP_DBG_OFF
+#define TCP_RTO_DEBUG                   LWIP_DBG_OFF
+#define TCP_CWND_DEBUG                  LWIP_DBG_OFF
+#define TCP_WND_DEBUG                   LWIP_DBG_OFF
+#define TCP_OUTPUT_DEBUG                LWIP_DBG_OFF
+#define TCP_RST_DEBUG                   LWIP_DBG_OFF
+#define TCP_QLEN_DEBUG                  LWIP_DBG_OFF
+#define UDP_DEBUG                       LWIP_DBG_OFF
+#define TCPIP_DEBUG                     LWIP_DBG_OFF
+#define PPP_DEBUG                       LWIP_DBG_OFF
+#define SLIP_DEBUG                      LWIP_DBG_OFF
+#define DHCP_DEBUG                      LWIP_DBG_OFF
+#define AUTOIP_DEBUG                    LWIP_DBG_OFF
+#define SNMP_MSG_DEBUG                  LWIP_DBG_OFF
+#define SNMP_MIB_DEBUG                  LWIP_DBG_OFF
+#define DNS_DEBUG                       LWIP_DBG_OFF
+
+//#define LWIP_COMPAT_MUTEX      		    1
+/**
+ * SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
+ * critical regions during buffer allocation, deallocation and memory
+ * allocation and deallocation.
+ */
+#define SYS_LIGHTWEIGHT_PROT            1
+
+/*
+   ------------------------------------
+   ---------- Memory options ----------
+   ------------------------------------
+*/
+
+/**
+ * MEM_ALIGNMENT: should be set to the alignment of the CPU
+ *    4 byte alignment -> #define MEM_ALIGNMENT 4
+ *    2 byte alignment -> #define MEM_ALIGNMENT 2
+ */
+#define MEM_ALIGNMENT                   4
+
+#define MAX_SOCKETS_TCP 12
+#define MAX_LISTENING_SOCKETS_TCP 4
+#define MAX_SOCKETS_UDP 22
+#define TCP_SND_BUF_COUNT 5
+
+/* Value of TCP_SND_BUF_COUNT denotes the number of buffers and is set by
+ * CONFIG option available in the SDK
+ */
+/* Buffer size needed for TCP: Max. number of TCP sockets * Size of pbuf *
+ * Max. number of TCP sender buffers per socket
+ *
+ * Listening sockets for TCP servers do not require the same amount buffer
+ * space. Hence do not consider these sockets for memory computation
+ */
+#define TCP_MEM_SIZE     (MAX_SOCKETS_TCP * \
+							PBUF_POOL_BUFSIZE * (TCP_SND_BUF/TCP_MSS))
+
+/* Buffer size needed for UDP: Max. number of UDP sockets * Size of pbuf
+ */
+#define UDP_MEM_SIZE (MAX_SOCKETS_UDP * PBUF_POOL_BUFSIZE)
+
+/**
+ * MEM_SIZE: the size of the heap memory. If the application will send
+ * a lot of data that needs to be copied, this should be set high.
+ */
+#if ((defined(CFG_LWIP_MEM_POLICY))&&(CFG_LWIP_MEM_POLICY == LWIP_REDUCE_THE_PLAN))
+#define MEM_SIZE (16*1024)
+#else
+#define MEM_SIZE (32*1024)
+#endif
+
+
+/*
+   ------------------------------------------------
+   ---------- Internal Memory Pool Sizes ----------
+   ------------------------------------------------
+*/
+/**
+ * MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF).
+ * If the application sends a lot of data out of ROM (or other static memory),
+ * this should be set high.
+ */
+#define MEMP_NUM_PBUF                   10
+
+/**
+ * MEMP_NUM_TCP_PCB: the number of simulatenously active TCP connections.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_PCB                MAX_SOCKETS_TCP
+
+#define MEMP_NUM_TCP_PCB_LISTEN         MAX_LISTENING_SOCKETS_TCP
+
+/**
+ * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
+ * (requires the LWIP_TCP option)
+ */
+//#define MEMP_NUM_TCP_SEG                12
+
+/**
+ * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used
+ * for incoming packets. 
+ * (only needed if you use tcpip.c)
+ */
+
+#define MEMP_NUM_TCPIP_MSG_INPKT        16
+
+/**
+ * MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
+ * (requires NO_SYS==0)
+ */
+#define MEMP_NUM_SYS_TIMEOUT            LWIP_NUM_SYS_TIMEOUT_INTERNAL + 10
+
+/**
+ * MEMP_NUM_NETBUF: the number of struct netbufs.
+ * (only needed if you use the sequential API, like api_lib.c)
+ */
+
+#define MEMP_NUM_NETBUF                 16
+
+/**
+ * MEMP_NUM_NETCONN: the number of struct netconns.
+ * (only needed if you use the sequential API, like api_lib.c)
+ *
+ * This number corresponds to the maximum number of active sockets at any
+ * given point in time. This number must be sum of max. TCP sockets, max. TCP
+ * sockets used for listening, and max. number of UDP sockets
+ */
+#define MEMP_NUM_NETCONN	(MAX_SOCKETS_TCP + \
+	MAX_LISTENING_SOCKETS_TCP + MAX_SOCKETS_UDP)
+
+
+
+/**
+ * PBUF_POOL_SIZE: the number of buffers in the pbuf pool.
+ */
+#if ((defined(CFG_LWIP_MEM_POLICY))&&(CFG_LWIP_MEM_POLICY == LWIP_REDUCE_THE_PLAN))
+#define PBUF_POOL_SIZE                  3
+#else
+#define PBUF_POOL_SIZE                  10
+#endif
+
+/*
+   ----------------------------------
+   ---------- Pbuf options ----------
+   ----------------------------------
+*/
+
+/**
+ * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is
+ * designed to accomodate single full size TCP frame in one pbuf, including
+ * TCP_MSS, IP header, and link header.
+ */
+#define PBUF_POOL_BUFSIZE               1580
+
+
+/*
+   ---------------------------------
+   ---------- RAW options ----------
+   ---------------------------------
+*/
+/**
+ * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
+ */
+#define LWIP_RAW                        1
+#define LWIP_IPV4                       1
+#ifdef CONFIG_IPV6
+#define LWIP_IPV6                        1
+#endif
+
+/* Enable IPv4 Auto IP	*/
+#ifdef CONFIG_AUTOIP
+#define LWIP_AUTOIP                     1
+#define LWIP_DHCP_AUTOIP_COOP           1
+#define LWIP_DHCP_AUTOIP_COOP_TRIES		5
+#endif
+
+/*
+   ------------------------------------
+   ---------- Socket options ----------
+   ------------------------------------
+*/
+/**
+ * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
+ */
+#define LWIP_SOCKET                     1
+#define LWIP_NETIF_API			1
+
+/**
+ * LWIP_RECV_CB==1: Enable callback when a socket receives data.
+ */
+#define LWIP_RECV_CB                1
+/**
+ * SO_REUSE==1: Enable SO_REUSEADDR option.
+ */
+#define SO_REUSE                        1
+#define SO_REUSE_RXTOALL 				1
+
+/**
+ * Enable TCP_KEEPALIVE
+ */
+#define LWIP_TCP_KEEPALIVE              1
+
+/*
+   ----------------------------------------
+   ---------- Statistics options ----------
+   ----------------------------------------
+*/
+/**
+ * LWIP_STATS==1: Enable statistics collection in lwip_stats.
+ */
+#define LWIP_STATS                      1
+
+/**
+ * LWIP_STATS_DISPLAY==1: Compile in the statistics output functions.
+ */
+#define LWIP_STATS_DISPLAY              0
+
+/*
+   ----------------------------------
+   ---------- DHCP options ----------
+   ----------------------------------
+*/
+/**
+ * LWIP_DHCP==1: Enable DHCP module.
+ */
+#define LWIP_DHCP                       1
+#define LWIP_NETIF_STATUS_CALLBACK      1
+
+/**
+ * DNS related options, revisit later to fine tune.
+ */
+#define LWIP_DNS                        1
+#define DNS_TABLE_SIZE                  2  // number of table entries, default 4
+//#define DNS_MAX_NAME_LENGTH           64  // max. name length, default 256
+#define DNS_MAX_SERVERS                 2  // number of DNS servers, default 2
+#define DNS_DOES_NAME_CHECK             1  // compare received name with given,def 0 
+#define DNS_MSG_SIZE                    512
+#define MDNS_MSG_SIZE                   512
+#define MDNS_TABLE_SIZE                 1  // number of mDNS table entries
+#define MDNS_MAX_SERVERS                1  // number of mDNS multicast addresses
+/* TODO: Number of active UDP PCBs is equal to number of active UDP sockets plus
+ * two. Need to find the users of these 2 PCBs
+ */
+#define MEMP_NUM_UDP_PCB		(MAX_SOCKETS_UDP + 2)
+/* NOTE: some times the socket() call for SOCK_DGRAM might fail if you dont
+ * have enough MEMP_NUM_UDP_PCB */
+
+/*
+   ----------------------------------
+   ---------- IGMP options ----------
+   ----------------------------------
+*/
+/**
+ * LWIP_IGMP==1: Turn on IGMP module.
+ */
+#define LWIP_IGMP                       1
+
+/**
+ * LWIP_SO_SNDTIMEO==1: Enable send timeout for sockets/netconns and
+ * SO_SNDTIMEO processing.
+ */
+#define LWIP_SO_SNDTIMEO                1
+
+/**
+ * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and
+ * SO_RCVTIMEO processing.
+ */
+#define LWIP_SO_RCVTIMEO                1
+#define LWIP_SO_SNDTIMEO                1
+/**
+ * TCP_LISTEN_BACKLOG==1: Handle backlog connections.
+ */
+#define TCP_LISTEN_BACKLOG		        1
+#define LWIP_PROVIDE_ERRNO		        1 
+
+#include <errno.h>
+#define ERRNO				            1
+
+//#define LWIP_SNMP 1
+
+
+/*
+   ------------------------------------------------
+   ---------- Network Interfaces options ----------
+   ------------------------------------------------
+*/
+/**
+ * LWIP_NETIF_HOSTNAME==1: use DHCP_OPTION_HOSTNAME with netif's hostname
+ * field.
+ */
+#define LWIP_NETIF_HOSTNAME             1
+
+
+/*
+The STM32F107 allows computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:
+ - To use this feature let the following define uncommented.
+ - To disable it and process by CPU comment the  the checksum.
+*/
+//#define CHECKSUM_BY_HARDWARE
+
+
+#ifdef CHECKSUM_BY_HARDWARE
+  /* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/
+  #define CHECKSUM_GEN_IP                 0
+  /* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/
+  #define CHECKSUM_GEN_UDP                0
+  /* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/
+  #define CHECKSUM_GEN_TCP                0
+  /* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/
+  #define CHECKSUM_CHECK_IP               0
+  /* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/
+  #define CHECKSUM_CHECK_UDP              0
+  /* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/
+  #define CHECKSUM_CHECK_TCP              0
+#else
+  /* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/
+  #define CHECKSUM_GEN_IP                 1
+  /* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/
+  #define CHECKSUM_GEN_UDP                1
+  /* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/
+  #define CHECKSUM_GEN_TCP                1
+  /* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/
+  #define CHECKSUM_CHECK_IP               1
+  /* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/
+  #define CHECKSUM_CHECK_UDP              1
+  /* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/
+  #define CHECKSUM_CHECK_TCP              1
+#endif
+
+/**
+ * TCP_RESOURCE_FAIL_RETRY_LIMIT: limit for retrying sending of tcp segment
+ * on resource failure error returned by driver.
+ */
+#define TCP_RESOURCE_FAIL_RETRY_LIMIT     50
+
+//#ifdef CONFIG_ENABLE_MXCHIP
+/* save memory */
+#if ((defined(CFG_LWIP_MEM_POLICY))&&(CFG_LWIP_MEM_POLICY == LWIP_REDUCE_THE_PLAN))
+#define TCP_MSS                 (1500 - 40)
+/* TCP receive window. */
+#define TCP_WND                 (3 * TCP_MSS)
+/* TCP sender buffer space (bytes). */
+#define TCP_SND_BUF             (10*TCP_MSS)
+
+#define TCP_SND_QUEUELEN        (20)
+#else
+#define TCP_MSS                 (1500 - 40)
+/* TCP receive window. */
+#define TCP_WND                 (10*TCP_MSS)
+/* TCP sender buffer space (bytes). */
+#define TCP_SND_BUF             (10*TCP_MSS)
+
+#define TCP_SND_QUEUELEN        (20)
+#endif
+
+/* ARP before DHCP causes multi-second delay  - turn it off */
+#define DHCP_DOES_ARP_CHECK            (0)
+
+#define TCP_MAX_ACCEPT_CONN 5
+#define MEMP_NUM_TCP_SEG               (TCP_SND_QUEUELEN*2)
+
+#define IP_REASS_MAX_PBUFS              0
+#define IP_REASSEMBLY                   0
+#define IP_REASS_MAX_PBUFS              0
+#define IP_REASSEMBLY                   0
+#define MEMP_NUM_REASSDATA              0
+#define IP_FRAG                         0
+
+#define MEM_LIBC_MALLOC                (0)
+
+#define DEFAULT_UDP_RECVMBOX_SIZE       3 //each udp socket max buffer 3 packets.
+
+#define MEMP_MEM_MALLOC (0)
+#define TCP_MSL (TCP_TMR_INTERVAL)
+
+#define LWIP_COMPAT_MUTEX_ALLOWED       (1)
+
+#define MEMP_STATS                       1
+#define MEM_STATS                        1
+
+#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
+
+#define ETHARP_SUPPORT_STATIC_ENTRIES   1
+
+#define LWIP_RIPPLE20                   1
+
+/* Beken specific LWIP options */
+#define BK_DHCP                         1
+
+#endif /* __LWIPOPTS_H__ */
+

port/net.c

@@ -0,0 +1,702 @@
+#include "include.h"
+#include <stdio.h>
+#include <string.h>
+
+#include <lwip/inet.h>
+#include "netif/etharp.h"
+#include "lwip/netif.h"
+#include <lwip/netifapi.h>
+#include <lwip/tcpip.h>
+#include <lwip/dns.h>
+#include <lwip/dhcp.h>
+#include "lwip/prot/dhcp.h"
+
+#include <lwip/sockets.h>
+#include "ethernetif.h"
+
+#include "sa_station.h"
+#include "drv_model_pub.h"
+#include "mem_pub.h"
+#include "common.h"
+#include "rw_pub.h"
+#include "lwip_netif_address.h"
+#include "rtos_pub.h"
+#include "net.h"
+
+#if CFG_ROLE_LAUNCH
+#include "role_launch.h"
+#endif
+
+/* forward declaration */
+FUNC_1PARAM_PTR bk_wlan_get_status_cb(void);
+
+struct ipv4_config sta_ip_settings;
+struct ipv4_config uap_ip_settings;
+static int up_iface;
+uint32_t sta_ip_start_flag = 0;
+uint32_t uap_ip_start_flag = 0;
+
+#ifdef CONFIG_IPV6
+#define IPV6_ADDR_STATE_TENTATIVE       "Tentative"
+#define IPV6_ADDR_STATE_PREFERRED       "Preferred"
+#define IPV6_ADDR_STATE_INVALID         "Invalid"
+#define IPV6_ADDR_STATE_VALID           "Valid"
+#define IPV6_ADDR_STATE_DEPRECATED      "Deprecated"
+#define IPV6_ADDR_TYPE_LINKLOCAL	    "Link-Local"
+#define IPV6_ADDR_TYPE_GLOBAL		    "Global"
+#define IPV6_ADDR_TYPE_UNIQUELOCAL	    "Unique-Local"
+#define IPV6_ADDR_TYPE_SITELOCAL	    "Site-Local"
+#define IPV6_ADDR_UNKNOWN		        "Unknown"
+#endif
+
+#define net_e warning_prf
+#define net_d warning_prf
+
+typedef void (*net_sta_ipup_cb_fn)(void* data);
+
+struct interface {
+	struct netif netif;
+	ip4_addr_t ipaddr;
+	ip4_addr_t nmask;
+	ip4_addr_t gw;
+};
+FUNCPTR sta_connected_func;
+
+static struct interface g_mlan = {{0}};
+static struct interface g_uap = {{0}};
+net_sta_ipup_cb_fn sta_ipup_cb = NULL;
+
+extern void *net_get_sta_handle(void);
+extern void *net_get_uap_handle(void);
+extern err_t lwip_netif_init(struct netif *netif);
+extern err_t lwip_netif_uap_init(struct netif *netif);
+extern int net_get_if_ip_addr(uint32_t *ip, void *intrfc_handle);
+extern int net_get_if_ip_mask(uint32_t *nm, void *intrfc_handle);
+extern int net_configure_address(struct ipv4_config *addr, void *intrfc_handle);
+extern int dhcp_server_start(void *intrfc_handle);
+extern void dhcp_server_stop(void);
+extern void net_configure_dns(struct wlan_ip_config *ip);
+
+int net_dhcp_hostname_set(char *hostname)
+{
+	netif_set_hostname(&g_mlan.netif, hostname);
+	return 0;
+}
+
+void net_ipv4stack_init(void)
+{
+	static bool tcpip_init_done = 0;
+	if (tcpip_init_done)
+		return;
+
+	net_d("Initializing TCP/IP stack\r\n");
+	tcpip_init(NULL, NULL);
+	tcpip_init_done = true;
+}
+
+void net_wlan_init(void)
+{
+	static int wlan_init_done = 0;
+	int ret;
+
+	if (!wlan_init_done) {
+		net_ipv4stack_init();
+		g_mlan.ipaddr.addr = INADDR_ANY;
+		ret = netifapi_netif_add(&g_mlan.netif, &g_mlan.ipaddr,
+					 &g_mlan.ipaddr, &g_mlan.ipaddr, NULL,
+					 lwip_netif_init, tcpip_input);
+		if (ret) {
+			/*FIXME: Handle the error case cleanly */
+			net_e("MLAN interface add failed");
+		}
+
+		ret = netifapi_netif_add(&g_uap.netif, &g_uap.ipaddr,
+					 &g_uap.ipaddr, &g_uap.ipaddr, NULL,
+					 lwip_netif_uap_init, tcpip_input);
+		if (ret) {
+			/*FIXME: Handle the error case cleanly */
+			net_e("UAP interface add failed");
+		}
+		wlan_init_done = 1;
+	}
+
+	return;
+}
+
+void net_set_sta_ipup_callback(void *fn)
+{
+    sta_ipup_cb = (net_sta_ipup_cb_fn)fn;
+}
+
+void user_connected_callback(FUNCPTR fn)
+{
+	sta_connected_func = fn;
+}
+
+static void wm_netif_status_static_callback(struct netif *n)
+{
+    if (n->flags & NETIF_FLAG_UP)
+    {
+        // static IP success;
+        os_printf("using static ip...\n");
+        mhdr_set_station_status(RW_EVT_STA_GOT_IP);/* dhcp success*/
+
+        if(sta_ipup_cb != NULL)
+            sta_ipup_cb(NULL);
+
+        if(sta_connected_func != NULL)
+            (*sta_connected_func)();
+    }
+    else
+    {
+    	// static IP fail;
+    }
+}
+
+
+static void wm_netif_status_callback(struct netif *n)
+{
+	FUNC_1PARAM_PTR fn;
+    struct dhcp *dhcp;
+	u32 val;
+
+	if (n->flags & NETIF_FLAG_UP)
+	{
+		dhcp = netif_dhcp_data(n);
+		if(dhcp != NULL)
+		{
+			if (dhcp->state == DHCP_STATE_BOUND)
+            {
+				os_printf("ip_addr: %x\r\n", ip_addr_get_ip4_u32(&n->ip_addr));
+
+#if CFG_ROLE_LAUNCH
+                rl_pre_sta_set_status(RL_STATUS_STA_LAUNCHED);
+#endif
+				fn = (FUNC_1PARAM_PTR)bk_wlan_get_status_cb();
+				if(fn)
+				{
+					val = RW_EVT_STA_GOT_IP;
+					(*fn)(&val);
+				}
+				mhdr_set_station_status(RW_EVT_STA_GOT_IP);
+				/* dhcp success*/
+                if(sta_ipup_cb != NULL)
+                    sta_ipup_cb(NULL);
+
+				if(sta_connected_func != NULL)
+					(*sta_connected_func)();
+			}
+			else
+			{
+				// dhcp fail
+			}
+		}
+		else
+		{
+			// static IP success;
+		}
+	}
+	else
+	{
+		// dhcp fail;
+	}
+}
+
+static int check_iface_mask(void *handle, uint32_t ipaddr)
+{
+	uint32_t interface_ip, interface_mask;
+	net_get_if_ip_addr(&interface_ip, handle);
+	net_get_if_ip_mask(&interface_mask, handle);
+	if (interface_ip > 0)
+		if ((interface_ip & interface_mask) ==
+		    (ipaddr & interface_mask))
+			return 0;
+	return -1;
+}
+
+void *net_ip_to_interface(uint32_t ipaddr)
+{
+	int ret;
+	void *handle;
+	/* Check mlan handle */
+	handle = net_get_sta_handle();
+	ret = check_iface_mask(handle, ipaddr);
+	if (ret == 0)
+		return handle;
+
+	/* Check uap handle */
+	handle = net_get_uap_handle();
+	ret = check_iface_mask(handle, ipaddr);
+	if (ret == 0)
+		return handle;
+
+	/* If more interfaces are added then above check needs to done for
+	 * those newly added interfaces
+	 */
+	return NULL;
+}
+
+void *net_sock_to_interface(int sock)
+{
+	struct sockaddr_in peer;
+	unsigned long peerlen = sizeof(struct sockaddr_in);
+	void *req_iface = NULL;
+
+	getpeername(sock, (struct sockaddr *)&peer, &peerlen);
+	req_iface = net_ip_to_interface(peer.sin_addr.s_addr);
+	return req_iface;
+}
+
+void *net_get_sta_handle(void)
+{
+	return &g_mlan.netif;
+}
+
+void *net_get_uap_handle(void)
+{
+	return &g_uap.netif;
+}
+
+void *net_get_netif_handle(uint8_t iface)
+{
+
+    return NULL;
+}
+
+void net_interface_up(void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+	netifapi_netif_set_up(&if_handle->netif);
+}
+
+void net_interface_down(void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+	netifapi_netif_set_down(&if_handle->netif);
+}
+
+void net_interface_dhcp_stop(void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+	netifapi_dhcp_stop(&if_handle->netif);
+	netif_set_status_callback(&if_handle->netif, NULL);
+}
+
+void sta_ip_down(void)
+{
+	if(sta_ip_start_flag)
+	{
+		os_printf("sta_ip_down\r\n");
+
+		sta_ip_start_flag = 0;
+
+		netifapi_netif_set_down(&g_mlan.netif);
+		netif_set_status_callback(&g_mlan.netif, NULL);
+		netifapi_dhcp_stop(&g_mlan.netif);
+	}
+}
+
+void sta_ip_start(void)
+{
+    struct wlan_ip_config address = {0};
+
+	if(!sta_ip_start_flag)
+	{
+		os_printf("sta_ip_start\r\n");
+		sta_ip_start_flag = 1;
+		net_configure_address(&sta_ip_settings, net_get_sta_handle());
+
+		return;
+	}
+
+	os_printf("sta_ip_start2:0x%x\r\n", address.ipv4.address);
+    net_get_if_addr(&address, net_get_sta_handle());
+    if((mhdr_get_station_status() == RW_EVT_STA_CONNECTED)
+		&& (0 != address.ipv4.address))
+    {
+        mhdr_set_station_status(RW_EVT_STA_GOT_IP);
+    }
+}
+
+void sta_set_vif_netif(void)
+{
+    rwm_mgmt_set_vif_netif(&g_mlan.netif);
+}
+
+void ap_set_vif_netif(void)
+{
+    rwm_mgmt_set_vif_netif(&g_uap.netif);
+}
+
+void sta_set_default_netif(void)
+{
+    netifapi_netif_set_default(net_get_sta_handle());
+}
+
+void ap_set_default_netif(void)
+{
+    // as the default netif is sta's netif, so ap need to send
+    // boardcast or not sub net packets, need set ap netif before
+    // send those packets, after finish sending, reset default netif
+    // to sat's netif.
+    netifapi_netif_set_default(net_get_uap_handle());
+}
+
+void reset_default_netif(void)
+{
+	if (sta_ip_is_start()) {
+		netifapi_netif_set_default(net_get_sta_handle());
+	} else {
+		netifapi_netif_set_default(NULL);
+	}
+}
+
+uint32_t sta_ip_is_start(void)
+{
+	return sta_ip_start_flag;
+}
+
+void uap_ip_down(void)
+{
+	if (uap_ip_start_flag )
+	{
+		os_printf("uap_ip_down\r\n");
+		uap_ip_start_flag = 0;
+
+		netifapi_netif_set_down(&g_uap.netif);
+		netif_set_status_callback(&g_uap.netif, NULL);
+		dhcp_server_stop();
+	}
+}
+
+void uap_ip_start(void)
+{
+	if ( !uap_ip_start_flag )
+	{
+		os_printf("uap_ip_start\r\n");
+		uap_ip_start_flag = 1;
+    	net_configure_address(&uap_ip_settings, net_get_uap_handle());
+    }
+}
+
+uint32_t uap_ip_is_start(void)
+{
+	return uap_ip_start_flag;
+}
+
+#define DEF_UAP_IP	      0xc0a80a01UL /* 192.168.10.1 */
+
+void ip_address_set(int iface, int dhcp, char *ip, char *mask, char*gw, char*dns)
+{
+	uint32_t tmp;
+	struct ipv4_config addr;
+
+	memset(&addr, 0, sizeof(struct ipv4_config));
+	if (dhcp == 1) {
+		addr.addr_type = ADDR_TYPE_DHCP;
+	} else {
+		addr.addr_type = ADDR_TYPE_STATIC;
+	    tmp = inet_addr((char*)ip);
+	    addr.address = (tmp);
+	    tmp = inet_addr((char*)mask);
+	    if (tmp == 0xFFFFFFFF)
+	        tmp = 0x00FFFFFF;// if not set valid netmask, set as 255.255.255.0
+	    addr.netmask= (tmp);
+	    tmp = inet_addr((char*)gw);
+	    addr.gw = (tmp);
+
+	    tmp = inet_addr((char*)dns);
+	    addr.dns1 = (tmp);
+	}
+
+	if (iface == 1) // Station
+		memcpy(&sta_ip_settings, &addr, sizeof(addr));
+	else
+		memcpy(&uap_ip_settings, &addr, sizeof(addr));
+}
+
+int net_configure_address(struct ipv4_config *addr, void *intrfc_handle)
+{
+	if (!intrfc_handle)
+		return -1;
+
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+	net_d("\r\nconfiguring interface %s (with %s)",
+		(if_handle == &g_mlan) ? "mlan" :"uap",
+		(addr->addr_type == ADDR_TYPE_DHCP)
+		? "DHCP client" : "Static IP");
+	netifapi_netif_set_down(&if_handle->netif);
+
+	/* De-register previously registered DHCP Callback for correct
+	 * address configuration.
+	 */
+	netif_set_status_callback(&if_handle->netif, NULL);
+	switch (addr->addr_type) {
+	case ADDR_TYPE_STATIC:
+		if_handle->ipaddr.addr = addr->address;
+		if_handle->nmask.addr = addr->netmask;
+		if_handle->gw.addr = addr->gw;
+
+		netifapi_netif_set_addr(&if_handle->netif, &if_handle->ipaddr,
+					&if_handle->nmask, &if_handle->gw);
+		netifapi_netif_set_up(&if_handle->netif);
+		net_configure_dns((struct wlan_ip_config *)addr);
+		if(if_handle == &g_mlan)
+		{
+			netif_set_status_callback(&if_handle->netif,
+										wm_netif_status_static_callback);
+		}
+		break;
+
+	case ADDR_TYPE_DHCP:
+		/* Reset the address since we might be transitioning from static to DHCP */
+		memset(&if_handle->ipaddr, 0, sizeof(ip_addr_t));
+		memset(&if_handle->nmask, 0, sizeof(ip_addr_t));
+		memset(&if_handle->gw, 0, sizeof(ip_addr_t));
+		netifapi_netif_set_addr(&if_handle->netif, &if_handle->ipaddr,
+				&if_handle->nmask, &if_handle->gw);
+
+		netif_set_status_callback(&if_handle->netif,
+					wm_netif_status_callback);
+		netifapi_netif_set_up(&if_handle->netif);
+		netifapi_dhcp_start(&if_handle->netif);
+		break;
+
+	default:
+		break;
+	}
+#ifdef CONFIG_IPV6
+	netif_create_ip6_linklocal_address(&if_handle->netif, 1);
+#endif
+	/* Finally this should send the following event. */
+	if (if_handle == &g_mlan) {
+		// static IP up;
+
+		/* XXX For DHCP, the above event will only indicate that the
+		 * DHCP address obtaining process has started. Once the DHCP
+		 * address has been obtained, another event,
+		 * WD_EVENT_NET_DHCP_CONFIG, should be sent to the wlcmgr.
+		 */
+		 up_iface = 1;
+
+         // we always set sta netif as the default.
+         sta_set_default_netif();
+	} else {
+		// softap IP up, start dhcp server;
+		dhcp_server_start(net_get_uap_handle());
+		up_iface = 0;
+
+        // as the default netif is sta's netif, so ap need to send
+        // boardcast or not sub net packets, need set ap netif before
+        // send those packets, after finish sending, reset default netif
+        // to sta's netif.
+        os_printf("def netif is no ap's netif, sending boardcast or no-subnet ip packets may failed\r\n");
+	}
+
+	return 0;
+}
+
+int net_get_if_addr(struct wlan_ip_config *addr, void *intrfc_handle)
+{
+	const ip_addr_t *tmp;
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+    if(netif_is_up(&if_handle->netif)) {
+	addr->ipv4.address = ip_addr_get_ip4_u32(&if_handle->netif.ip_addr);
+	addr->ipv4.netmask = ip_addr_get_ip4_u32(&if_handle->netif.netmask);
+	addr->ipv4.gw = ip_addr_get_ip4_u32(&if_handle->netif.gw);
+
+    	tmp = dns_getserver(0);
+		addr->ipv4.dns1 = ip_addr_get_ip4_u32(tmp);
+
+		tmp = dns_getserver(1);
+		addr->ipv4.dns2 = ip_addr_get_ip4_u32(tmp);
+    }
+
+	return 0;
+}
+
+int net_get_if_macaddr(void *macaddr, void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+    os_memcpy(macaddr, &if_handle->netif.hwaddr[0], if_handle->netif.hwaddr_len);
+
+	return 0;
+}
+
+#ifdef CONFIG_IPV6
+int net_get_if_ipv6_addr(struct wlan_ip_config *addr, void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+	int i;
+
+	for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
+			ip6_addr_copy_to_packed(addr->ipv6[i],
+									*ip_2_ip6(&if_handle->netif.ip6_addr[i]));
+			addr->ipv6[i].addr_state = if_handle->netif.ip6_addr_state[i];
+	}
+	/* TODO carry out more processing based on IPv6 fields in netif */
+	return 0;
+}
+
+int net_get_if_ipv6_pref_addr(struct wlan_ip_config *addr, void *intrfc_handle)
+{
+	int i, ret = 0;
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+	for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
+		if (if_handle->netif.ip6_addr_state[i] == IP6_ADDR_PREFERRED) {
+			ip6_addr_copy_to_packed(addr->ipv6[ret],
+									*ip_2_ip6(&if_handle->netif.ip6_addr[i]));
+			ret++;
+		}
+	}
+	return ret;
+}
+#endif /* CONFIG_IPV6 */
+
+int net_get_if_ip_addr(uint32_t *ip, void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+	*ip = ip_addr_get_ip4_u32(&if_handle->netif.ip_addr);
+	return 0;
+}
+
+int net_get_if_gw_addr(uint32_t *ip, void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+	*ip = ip_addr_get_ip4_u32(&if_handle->netif.gw);
+
+	return 0;
+}
+
+int net_get_if_ip_mask(uint32_t *nm, void *intrfc_handle)
+{
+	struct interface *if_handle = (struct interface *)intrfc_handle;
+
+	*nm = ip_addr_get_ip4_u32(&if_handle->netif.netmask);
+	return 0;
+}
+
+void net_configure_dns(struct wlan_ip_config *ip)
+{
+	ip_addr_t tmp;
+
+	if (ip->ipv4.addr_type == ADDR_TYPE_STATIC) {
+
+		if (ip->ipv4.dns1 == 0)
+			ip->ipv4.dns1 = ip->ipv4.gw;
+		if (ip->ipv4.dns2 == 0)
+			ip->ipv4.dns2 = ip->ipv4.dns1;
+
+		ip_addr_set_ip4_u32(&tmp, ip->ipv4.dns1);
+		dns_setserver(0, &tmp);
+		ip_addr_set_ip4_u32(&tmp, ip->ipv4.dns2);
+		dns_setserver(1, &tmp);
+	}
+
+	/* DNS MAX Retries should be configured in lwip/dns.c to 3/4 */
+	/* DNS Cache size of about 4 is sufficient */
+}
+
+void net_wlan_initial(void)
+{
+    net_ipv4stack_init();
+}
+
+void net_wlan_add_netif(void *mac)
+{
+    VIF_INF_PTR vif_entry = NULL;
+    struct interface *wlan_if = NULL;
+    err_t err;
+    u8 vif_idx;
+    u8 *b = (u8*)mac;
+
+    if(!b || (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])))
+        return;
+
+    vif_idx = rwm_mgmt_vif_mac2idx(mac);
+    if(vif_idx == 0xff) {
+        os_printf("net_add_netif-not-found\r\n");
+        return ;
+    }
+
+    vif_entry = rwm_mgmt_vif_idx2ptr(vif_idx);
+    if(!vif_entry) {
+        os_printf("net_wlan_add_netif not vif found, %d\r\n", vif_idx);
+        return ;
+    }
+
+    if(vif_entry->type == VIF_AP) {
+        wlan_if = &g_uap;
+    } else if(vif_entry->type == VIF_STA) {
+        wlan_if = &g_mlan;
+    } else {
+        os_printf("net_wlan_add_netif with other role\r\n");
+        return ;
+    }
+
+    wlan_if->ipaddr.addr = INADDR_ANY;
+
+	err = netifapi_netif_add(&wlan_if->netif,
+								&wlan_if->ipaddr,
+								&wlan_if->ipaddr,
+								&wlan_if->ipaddr,
+								(void*)vif_entry,
+								ethernetif_init,
+								tcpip_input);
+	if (err)
+	{
+    	os_printf("net_wlan_add_netif failed\r\n");
+    }
+	else
+	{
+        vif_entry->priv = &wlan_if->netif;
+    }
+
+    os_printf("[net]addvif_idx:%d\r\n", vif_idx);
+}
+
+void net_wlan_remove_netif(void *mac)
+{
+    err_t err;
+    u8 vif_idx;
+    VIF_INF_PTR vif_entry = NULL;
+    struct netif *netif = NULL;
+    u8 *b = (u8*)mac;
+
+    if(!b || (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5])))
+        return;
+
+    vif_idx = rwm_mgmt_vif_mac2idx(mac);
+    if(vif_idx == 0xff) {
+        os_printf("net_wlan_add_netif not vif idx found\r\n");
+        return ;
+    }
+    vif_entry = rwm_mgmt_vif_idx2ptr(vif_idx);
+    if(!vif_entry) {
+        os_printf("net_wlan_add_netif not vif found, %d\r\n", vif_idx);
+        return ;
+    }
+
+    netif = (struct netif *)vif_entry->priv;
+    if(!netif) {
+        os_printf("net_wlan_remove_netif netif is null\r\n");
+        return;
+    }
+
+    err = netifapi_netif_remove(netif);
+    if(err != ERR_OK) {
+        os_printf("net_wlan_remove_netif failed\r\n");
+    } else {
+        netif->state = NULL;
+    }
+
+    os_printf("[net]remoVif_idx:%d\r\n", vif_idx);
+}
+//eof
+

port/net.h

@@ -0,0 +1,25 @@
+#ifndef _NET_H_
+#define _NET_H_
+
+#include "lwip_netif_address.h"
+
+extern void uap_ip_down(void);
+extern void uap_ip_start(void);
+extern void sta_ip_down(void);
+extern void sta_ip_start(void);
+extern uint32_t uap_ip_is_start(void);
+extern uint32_t sta_ip_is_start(void);
+extern void *net_get_sta_handle(void);
+extern void *net_get_uap_handle(void);
+extern void net_wlan_remove_netif(void *mac);
+extern int net_get_if_macaddr(void *macaddr, void *intrfc_handle);
+extern int net_get_if_addr(struct wlan_ip_config *addr, void *intrfc_handle);
+extern void ip_address_set(int iface, int dhcp, char *ip, char *mask, char*gw, char*dns);
+#ifdef CONFIG_IPV6
+int net_get_if_ipv6_addr(struct wlan_ip_config *addr, void *intrfc_handle);
+int net_get_if_ipv6_pref_addr(struct wlan_ip_config *addr, void *intrfc_handle);
+#endif
+
+#endif // _NET_H_
+// eof
+

port/sys_arch.c

@@ -0,0 +1,501 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#include "typedef.h"
+#include "sys_rtos.h"
+#include "rtos_pub.h"
+/* lwIP includes. */
+#include "lwip/debug.h"
+#include "lwip/def.h"
+#include "lwip/sys.h"
+#include "lwip/mem.h"
+#include "lwip/stats.h"
+#include "lwip/timeouts.h"
+#include "portmacro.h"
+
+#define CFG_ENABLE_LWIP_MUTEX      1
+
+#if CFG_ENABLE_LWIP_MUTEX
+static sys_mutex_t sys_arch_mutex;
+#endif
+
+/*-----------------------------------------------------------------------------------*/
+err_t sys_mbox_new(sys_mbox_t *mbox, int size)
+{
+	(void ) size;
+	
+	if (size > 0)
+		*mbox = xQueueCreate( size, sizeof( void * ) );
+	else
+		*mbox = xQueueCreate( archMESG_QUEUE_LENGTH, sizeof( void * ) );
+
+#if SYS_STATS
+      ++lwip_stats.sys.mbox.used;
+      if (lwip_stats.sys.mbox.max < lwip_stats.sys.mbox.used) {
+         lwip_stats.sys.mbox.max = lwip_stats.sys.mbox.used;
+	  }
+#endif /* SYS_STATS */
+
+    if (*mbox == NULL)
+        return ERR_MEM;
+
+    return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------------------*/
+/*
+  Deallocates a mailbox. If there are messages still present in the
+  mailbox when the mailbox is deallocated, it is an indication of a
+  programming error in lwIP and the developer should be notified.
+*/
+void sys_mbox_free(sys_mbox_t *mbox)
+{
+	if( uxQueueMessagesWaiting( *mbox ) )
+	{
+		/* Line for breakpoint.  Should never break here! */
+		portNOP();
+#if SYS_STATS
+	    lwip_stats.sys.mbox.err++;
+#endif /* SYS_STATS */
+			
+		// TODO notify the user of failure.
+	}
+
+	vQueueDelete( *mbox );
+
+#if SYS_STATS
+     --lwip_stats.sys.mbox.used;
+#endif /* SYS_STATS */
+}
+
+/*-----------------------------------------------------------------------------------*/
+//   Posts the "msg" to the mailbox.
+void sys_mbox_post(sys_mbox_t *mbox, void *data)
+{
+	while ( xQueueSendToBack(*mbox, &data, portMAX_DELAY ) != pdTRUE ){}
+}
+
+
+/*-----------------------------------------------------------------------------------*/
+//   Try to post the "msg" to the mailbox.
+err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg)
+{
+err_t result;
+
+   if ( xQueueSend( *mbox, &msg, 0 ) == pdPASS )
+   {
+      result = ERR_OK;
+   }
+   else {
+      // could not post, queue must be full
+      result = ERR_MEM;
+			
+#if SYS_STATS
+      lwip_stats.sys.mbox.err++;
+#endif /* SYS_STATS */
+			
+   }
+
+   return result;
+}
+
+/*-----------------------------------------------------------------------------------*/
+/*
+  Blocks the thread until a message arrives in the mailbox, but does
+  not block the thread longer than "timeout" milliseconds (similar to
+  the sys_arch_sem_wait() function). The "msg" argument is a result
+  parameter that is set by the function (i.e., by doing "*msg =
+  ptr"). The "msg" parameter maybe NULL to indicate that the message
+  should be dropped.
+
+  The return values are the same as for the sys_arch_sem_wait() function:
+  Number of milliseconds spent waiting or SYS_ARCH_TIMEOUT if there was a
+  timeout.
+
+  Note that a function with a similar name, sys_mbox_fetch(), is
+  implemented by lwIP.
+*/
+u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout)
+{
+void *dummyptr;
+portTickType StartTime, EndTime, Elapsed;
+
+	StartTime = xTaskGetTickCount();
+
+	if ( msg == NULL )
+	{
+		msg = &dummyptr;
+	}
+		
+	if ( timeout != 0 )
+	{
+		if ( pdTRUE == xQueueReceive( *mbox, &(*msg), timeout / portTICK_RATE_MS ) )
+		{
+			EndTime = xTaskGetTickCount();
+			Elapsed = (EndTime - StartTime) * portTICK_RATE_MS;
+			
+			return ( Elapsed );
+		}
+		else // timed out blocking for message
+		{
+			*msg = NULL;
+			
+			return SYS_ARCH_TIMEOUT;
+		}
+	}
+	else // block forever for a message.
+	{
+		while( pdTRUE != xQueueReceive( *mbox, &(*msg), portMAX_DELAY ) ){} // time is arbitrary
+		EndTime = xTaskGetTickCount();
+		Elapsed = (EndTime - StartTime) * portTICK_RATE_MS;
+		
+		return ( Elapsed ); // return time blocked TODO test	
+	}
+}
+
+/*-----------------------------------------------------------------------------------*/
+/*
+  Similar to sys_arch_mbox_fetch, but if message is not ready immediately, we'll
+  return with SYS_MBOX_EMPTY.  On success, 0 is returned.
+*/
+u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg)
+{
+void *dummyptr;
+
+	if ( msg == NULL )
+	{
+		msg = &dummyptr;
+	}
+
+   if ( pdTRUE == xQueueReceive( *mbox, &(*msg), 0 ) )
+   {
+      return ERR_OK;
+   }
+   else
+   {
+      return SYS_MBOX_EMPTY;
+   }
+}
+/*----------------------------------------------------------------------------------*/
+int sys_mbox_valid(sys_mbox_t *mbox)          
+{      
+  if (*mbox == SYS_MBOX_NULL) 
+    return 0;
+  else
+    return 1;
+}                                             
+/*-----------------------------------------------------------------------------------*/                                              
+void sys_mbox_set_invalid(sys_mbox_t *mbox)   
+{                                             
+  *mbox = SYS_MBOX_NULL;                      
+}                                             
+
+/*-----------------------------------------------------------------------------------*/
+//  Creates a new semaphore. The "count" argument specifies
+//  the initial state of the semaphore.
+err_t sys_sem_new(sys_sem_t *sem, u8_t count)
+{
+	vSemaphoreCreateBinary(*sem );
+	if(*sem == NULL)
+	{
+		
+#if SYS_STATS
+      ++lwip_stats.sys.sem.err;
+#endif /* SYS_STATS */	
+		return ERR_MEM;
+	}
+	
+	if(count == 0)	// Means it can't be taken
+	{
+		xSemaphoreTake(*sem,1);
+	}
+
+#if SYS_STATS
+	++lwip_stats.sys.sem.used;
+ 	if (lwip_stats.sys.sem.max < lwip_stats.sys.sem.used) {
+		lwip_stats.sys.sem.max = lwip_stats.sys.sem.used;
+	}
+#endif /* SYS_STATS */
+		
+	return ERR_OK;
+}
+
+/*-----------------------------------------------------------------------------------*/
+/*
+  Blocks the thread while waiting for the semaphore to be
+  signaled. If the "timeout" argument is non-zero, the thread should
+  only be blocked for the specified time (measured in
+  milliseconds).
+
+  If the timeout argument is non-zero, the return value is the number of
+  milliseconds spent waiting for the semaphore to be signaled. If the
+  semaphore wasn't signaled within the specified time, the return value is
+  SYS_ARCH_TIMEOUT. If the thread didn't have to wait for the semaphore
+  (i.e., it was already signaled), the function may return zero.
+
+  Notice that lwIP implements a function with a similar name,
+  sys_sem_wait(), that uses the sys_arch_sem_wait() function.
+*/
+u32_t sys_arch_sem_wait(sys_sem_t *sem, u32_t timeout)
+{
+	portTickType StartTime, EndTime, Elapsed;
+
+	StartTime = xTaskGetTickCount();
+
+	if(	timeout != 0)
+	{
+		if( xSemaphoreTake( *sem, timeout / portTICK_RATE_MS ) == pdTRUE )
+		{
+			EndTime = xTaskGetTickCount();
+			Elapsed = (EndTime - StartTime) * portTICK_RATE_MS;
+			
+			return (Elapsed); // return time blocked TODO test	
+		}
+		else
+		{
+			return SYS_ARCH_TIMEOUT;
+		}
+	}
+	else // must block without a timeout
+	{
+		while( xSemaphoreTake( *sem, portMAX_DELAY) != pdTRUE)
+		{
+			;
+		}
+		
+		EndTime = xTaskGetTickCount();
+		Elapsed = (EndTime - StartTime) * portTICK_RATE_MS;
+
+		return ( Elapsed ); // return time blocked	
+	}
+}
+
+/*-----------------------------------------------------------------------------------*/
+// Signals a semaphore
+void sys_sem_signal(sys_sem_t *sem)
+{
+	xSemaphoreGive(*sem);
+}
+
+/*-----------------------------------------------------------------------------------*/
+// Deallocates a semaphore
+void sys_sem_free(sys_sem_t *sem)
+{
+#if SYS_STATS
+      --lwip_stats.sys.sem.used;
+#endif /* SYS_STATS */
+			
+	vQueueDelete(*sem);
+}
+/*-----------------------------------------------------------------------------------*/
+int sys_sem_valid(sys_sem_t *sem)                                               
+{
+  if (*sem == SYS_SEM_NULL)
+    return 0;
+  else
+    return 1;                                       
+}
+
+/*-----------------------------------------------------------------------------------*/                                                                                                                                                                
+void sys_sem_set_invalid(sys_sem_t *sem)                                        
+{                                                                               
+  *sem = SYS_SEM_NULL;                                                          
+} 
+
+/*-----------------------------------------------------------------------------------*/        
+err_t sys_mutex_trylock(sys_mutex_t *pxMutex)
+{
+	if (xSemaphoreTake(*pxMutex, 0) == pdPASS) 
+		return 0;
+	else 
+		return -1;
+}
+
+/*-----------------------------------------------------------------------------------*/
+// Initialize sys arch
+void sys_init(void)
+{
+#if CFG_ENABLE_LWIP_MUTEX
+	sys_mutex_new(&sys_arch_mutex);
+#endif
+}
+
+/*-----------------------------------------------------------------------------------*/
+                                      /* Mutexes*/
+/*-----------------------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+/* Create a new mutex*/
+err_t sys_mutex_new(sys_mutex_t *mutex) {
+	*mutex = xSemaphoreCreateMutex();
+	if(*mutex == NULL)
+	{
+#if SYS_STATS
+      ++lwip_stats.sys.mutex.err;
+#endif /* SYS_STATS */	
+		return ERR_MEM;
+	}
+
+#if SYS_STATS
+	++lwip_stats.sys.mutex.used;
+ 	if (lwip_stats.sys.mutex.max < lwip_stats.sys.mutex.used) {
+		lwip_stats.sys.mutex.max = lwip_stats.sys.mutex.used;
+	}
+#endif /* SYS_STATS */
+
+        return ERR_OK;
+}
+/*-----------------------------------------------------------------------------------*/
+/* Deallocate a mutex*/
+void sys_mutex_free(sys_mutex_t *mutex)
+{
+#if SYS_STATS
+      --lwip_stats.sys.mutex.used;
+#endif /* SYS_STATS */
+			
+	vQueueDelete(*mutex);
+}
+/*-----------------------------------------------------------------------------------*/
+/* Lock a mutex*/
+void sys_mutex_lock(sys_mutex_t *mutex)
+{
+	sys_arch_sem_wait(mutex, BEKEN_WAIT_FOREVER);
+}
+
+/*-----------------------------------------------------------------------------------*/
+/* Unlock a mutex*/
+void sys_mutex_unlock(sys_mutex_t *mutex)
+{
+	xSemaphoreGive(*mutex);
+}
+
+/*-----------------------------------------------------------------------------------*/
+// TODO
+/*-----------------------------------------------------------------------------------*/
+/*
+  Starts a new thread with priority "prio" that will begin its execution in the
+  function "thread()". The "arg" argument will be passed as an argument to the
+  thread() function. The id of the new thread is returned. Both the id and
+  the priority are system dependent.
+*/
+sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread , void *arg, int stacksize, int prio)
+{
+	xTaskHandle CreatedTask;
+	int result;
+   
+	result = xTaskCreate( thread, ( portCHAR * ) name, stacksize, arg, prio, &CreatedTask );
+	if(result == pdPASS)
+	{
+	   return CreatedTask;
+	}
+	else
+	{
+	   return NULL;
+	}
+}
+
+int sys_thread_delete(xTaskHandle pid)
+{
+	return pdPASS;
+}
+
+/*
+  This optional function does a "fast" critical region protection and returns
+  the previous protection level. This function is only called during very short
+  critical regions. An embedded system which supports ISR-based drivers might
+  want to implement this function by disabling interrupts. Task-based systems
+  might want to implement this by using a mutex or disabling tasking. This
+  function should support recursive calls from the same task or interrupt. In
+  other words, sys_arch_protect() could be called while already protected. In
+  that case the return value indicates that it is already protected.
+
+  sys_arch_protect() is only required if your port is supporting an operating
+  system.
+*/
+sys_prot_t sys_arch_protect(void)
+{	
+#if CFG_ENABLE_LWIP_MUTEX
+	sys_mutex_lock(&sys_arch_mutex);
+
+	return 0;
+#else
+	return port_disable_interrupts_flag();
+#endif	
+}
+
+/*
+  This optional function does a "fast" set of critical region protection to the
+  value specified by pval. See the documentation for sys_arch_protect() for
+  more information. This function is only required if your port is supporting
+  an operating system.
+*/
+void sys_arch_unprotect(sys_prot_t pval)
+{
+#if CFG_ENABLE_LWIP_MUTEX
+	(void)pval;
+	sys_mutex_unlock(&sys_arch_mutex);
+#else
+	port_enable_interrupts_flag(pval);
+#endif
+}
+
+/*
+ * Prints an assertion messages and aborts execution.
+ */
+void sys_assert( const char *msg )
+{	
+	(void) msg;
+	
+	/*FSL:only needed for debugging*/
+	printf(msg);
+	printf("\n\r");		
+    vPortEnterCritical();
+	
+    for(;;)
+    ;
+}
+
+u32_t sys_now(void)
+{
+	return xTaskGetTickCount() * portTICK_RATE_MS;
+}
+
+u32_t sys_jiffies(void)
+{
+	return xTaskGetTickCount() * portTICK_RATE_MS;
+}
+
+void sys_arch_msleep(int ms)
+{
+	vTaskDelay(ms / portTICK_RATE_MS);
+}
+// eof
+