First set of changes for from-source esp-lwip

examples/http_get/FreeRTOSConfig.h

@@ -84,7 +84,7 @@
 #define configTICK_RATE_HZ			( ( portTickType ) 100 )
 #define configMAX_PRIORITIES		( ( unsigned portBASE_TYPE ) 15 )
 #define configMINIMAL_STACK_SIZE	( ( unsigned short )156 )
-#define configTOTAL_HEAP_SIZE		( ( size_t ) ( 24 * 1024 ) )
+#define configTOTAL_HEAP_SIZE		( ( size_t ) ( 18 * 1024 ) )
 #define configMAX_TASK_NAME_LEN		( 16 )
 #define configUSE_TRACE_FACILITY	0
 #define configUSE_STATS_FORMATTING_FUNCTIONS 0

lwip/esp_interface.c

@@ -2,15 +2,89 @@
 
    These two symbols are called from libnet80211.a
 */
+#include "lwip/opt.h"
 
-/* called from hostap_input... less clear what this is for! */
+#include "lwip/def.h"
-void ethernetif_init(void)
+#include "lwip/mem.h"
+#include "lwip/pbuf.h"
+#include <lwip/stats.h>
+#include <lwip/snmp.h>
+#include "netif/etharp.h"
+#include "netif/ppp_oe.h"
+
+/* declared in libnet80211.a */
+int8_t ieee80211_output_pbuf(struct netif *ifp, struct pbuf* pb);
+//sint8 ieee80211_output_pbuf(struct ieee80211_conn *conn, esf_buf *eb);
+
+static err_t
+low_level_output(struct netif *netif, struct pbuf *p)
 {
+  struct pbuf *q;
 
+  for(q = p; q != NULL; q = q->next) {
+      ieee80211_output_pbuf(netif, q);
+  }
+
+  LINK_STATS_INC(link.xmit);
+
+  return ERR_OK;
+}
+
+
+err_t ethernetif_init(struct netif *netif)
+{
+  LWIP_ASSERT("netif != NULL", (netif != NULL));
+
+#if LWIP_NETIF_HOSTNAME
+  /* Initialize interface hostname */
+  netif->hostname = "lwip";
+#endif /* LWIP_NETIF_HOSTNAME */
+
+  /*
+   * 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, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);
+
+  //netif->state = (void *)0xDEADBEEF; /* this appears unused by esp layer */
+  netif->name[0] = 'e';
+  netif->name[1] = 'n';
+  netif->output = etharp_output;
+  /* NB: in the SDK there's a static wrapper function to this, not sure what it does!! */
+  netif->linkoutput = low_level_output;
+
+  /* low level init components */
+  netif->hwaddr_len = 6;
+  /* hwaddr seems to be set elsewhere, or (more likely) is per-packet by MAC layer */
+  netif->mtu = 1500;
+  netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
+
+  return ERR_OK;
 }
 
 /* called from ieee80211_deliver_data with new IP frames */
-void ethernetif_input(void)
+void ethernetif_input(struct netif *netif, struct pbuf *p)
 {
+    struct eth_hdr *ethhdr = p->payload;
+  /* examine packet payloads ethernet header */
 
+  switch (htons(ethhdr->type)) {
+  /* IP or ARP packet? */
+  case ETHTYPE_IP:
+  case ETHTYPE_ARP:
+//  case ETHTYPE_IPV6:
+    /* full packet send to tcpip_thread to process */
+    if (netif->input(p, netif)!=ERR_OK)
+     { LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
+       pbuf_free(p);
+       p = NULL;
+     }
+    break;
+
+  default:
+    pbuf_free(p);
+    p = NULL;
+    break;
+  }
 }

lwip/include/arch/bpstruct.h

@@ -1 +0,0 @@
-#pragma pack(push,1)

lwip/include/arch/cc.h

@@ -59,7 +59,7 @@ typedef uint32_t    u32_t;
 typedef int32_t    s32_t;
 
 typedef size_t mem_ptr_t;
-typedef u32_t sys_prot_t;
+typedef int sys_prot_t;
 
 /* Define (sn)printf formatters for these lwIP types */
 #define X8_F  "02x"
@@ -84,4 +84,9 @@ typedef u32_t sys_prot_t;
   printf("Assertion \"%s\" failed at line %d in %s\n", message, __LINE__, __FILE__); \
   handler;} } while(0)
 
+#define LWIP_PLATFORM_BYTESWAP 1
+
+#define LWIP_PLATFORM_HTONS(_n)  ((u16_t)((((_n) & 0xff) << 8) | (((_n) >> 8) & 0xff)))
+#define LWIP_PLATFORM_HTONL(_n)  ((u32_t)( (((_n) & 0xff) << 24) | (((_n) & 0xff00) << 8) | (((_n) >> 8)  & 0xff00) | (((_n) >> 24) & 0xff) ))
+
 #endif /* __ARCH_CC_H__ */

lwip/include/lwipopts.h

@@ -32,6 +32,12 @@
 #ifndef __LWIPOPTS_H__
 #define __LWIPOPTS_H__
 
+#define LWIP_ESP                            1
+#define ESP_RTOS                            1
+#define PBUF_RSV_FOR_WLAN                   1
+#define EBUF_LWIP                           1
+#define ESP_TIMEWAIT_THRESHOLD              10000
+
 /*
    -----------------------------------------------
    ---------- Platform specific locking ----------

lwip/lwip

@@ -1 +1 @@
-Subproject commit 5b8b5d459e7dd890724515bbfad86c705234f9ec
+Subproject commit 808c24237c1e9a3862b2eb1e0a94fd34ede6ec79