ipv6 interface: add branch for ipv6 interface

components/tcpip_adapter/include/tcpip_adapter.h

@@ -64,18 +64,22 @@ typedef struct {
     ip4_addr_t gw;
 } tcpip_adapter_ip_info_t;
 
+typedef struct {
+    ip6_addr_t ip;
+} tcpip_adapter_ip6_info_t;
+
 typedef dhcps_lease_t tcpip_adapter_dhcps_lease_t;
 
 #if CONFIG_DHCP_STA_LIST 
 typedef struct {
     uint8_t mac[6];
     ip4_addr_t ip;
-}tcpip_adapter_sta_info_t;
+} tcpip_adapter_sta_info_t;
 
 typedef struct {
     tcpip_adapter_sta_info_t sta[ESP_WIFI_MAX_CONN_NUM];
     int num;
-}tcpip_adapter_sta_list_t;
+} tcpip_adapter_sta_list_t;
 #endif
 
 #endif
@@ -211,6 +215,35 @@ esp_err_t tcpip_adapter_get_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_i
  */
 esp_err_t tcpip_adapter_set_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_ip_info_t *ip_info);
 
+/**
+ * @brief  create interface's linklocal IPv6 information
+ *
+ * @note this function will create a linklocal IPv6 address about input interface,
+ *       if this address status changed to preferred, will call event call back ,
+ *       notify user linklocal IPv6 address has been verified
+ *
+ * @param[in]  tcpip_if: the interface which we want to set IP information
+ *
+ *
+ * @return ESP_OK
+ *         ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
+ */
+esp_err_t tcpip_adapter_create_ip6_linklocal(tcpip_adapter_if_t tcpip_if);
+
+/**
+ * @brief  get interface's linkloacl IPv6 information
+ *
+ * There has an IPv6 information copy in adapter library, if interface is up,and IPv6 info
+ * is preferred,it will get IPv6 linklocal IP successfully
+ *
+ * @param[in]  tcpip_if: the interface which we want to set IP information
+ * @param[in]  if_ip6: If successful, IPv6 information will be returned in this argument.
+ *
+ * @return ESP_OK
+ *         ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS
+ */
+esp_err_t tcpip_adapter_get_ip6_linklocal(tcpip_adapter_if_t tcpip_if, ip6_addr_t *if_ip6);
+
 #if 0
 esp_err_t tcpip_adapter_get_mac(tcpip_adapter_if_t tcpip_if, uint8_t *mac);
 

components/tcpip_adapter/tcpip_adapter_lwip.c

@@ -23,7 +23,8 @@
 #include "lwip/tcpip.h"
 #include "lwip/dhcp.h"
 #include "lwip/ip_addr.h"
-
+#include "lwip/ip6_addr.h"
+#include "lwip/nd6.h"
 #include "netif/wlanif.h"
 
 #include "apps/dhcpserver.h"
@@ -32,6 +33,7 @@
 
 static struct netif *esp_netif[TCPIP_ADAPTER_IF_MAX];
 static tcpip_adapter_ip_info_t esp_ip[TCPIP_ADAPTER_IF_MAX];
+static tcpip_adapter_ip6_info_t esp_ip6[TCPIP_ADAPTER_IF_MAX];
 
 static tcpip_adapter_dhcp_status_t dhcps_status = TCPIP_ADAPTER_DHCP_INIT;
 static tcpip_adapter_dhcp_status_t dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
@@ -234,6 +236,69 @@ esp_err_t tcpip_adapter_set_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_i
     return ESP_OK;
 }
 
+static void tcpip_adapter_nd6_cb(struct netif *p_netif, uint8_t ip_idex)
+{
+    tcpip_adapter_ip6_info_t *ip6_info;
+
+    if (!p_netif) {
+        TCPIP_ADAPTER_DEBUG("null p_netif=%p\n", p_netif);
+        return;
+    }
+
+    if (p_netif == esp_netif[TCPIP_ADAPTER_IF_STA]) {
+        ip6_info = &esp_ip6[TCPIP_ADAPTER_IF_STA];
+    } else if(p_netif == esp_netif[TCPIP_ADAPTER_IF_AP]) {
+        ip6_info = &esp_ip6[TCPIP_ADAPTER_IF_AP]; 
+    } else {
+        return;
+    }
+
+    system_event_t evt;
+
+    ip6_addr_set(&ip6_info->ip, ip_2_ip6(&p_netif->ip6_addr[ip_idex]));
+
+    //notify event
+    evt.event_id = SYSTEM_EVENT_AP_STA_GOT_IP6;
+    memcpy(&evt.event_info.got_ip6.ip6_info, ip6_info, sizeof(tcpip_adapter_ip6_info_t));
+    esp_event_send(&evt);
+}
+
+esp_err_t tcpip_adapter_create_ip6_linklocal(tcpip_adapter_if_t tcpip_if)
+{
+    struct netif *p_netif;
+
+    if (tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
+        return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
+    }
+
+    p_netif = esp_netif[tcpip_if];
+    if(p_netif != NULL && netif_is_up(p_netif)) {
+        netif_create_ip6_linklocal_address(p_netif, 1);
+        nd6_set_cb(p_netif, tcpip_adapter_nd6_cb);
+
+        return ESP_OK;
+    } else {
+        return ESP_FAIL;
+    }
+}
+
+esp_err_t tcpip_adapter_get_ip6_linklocal(tcpip_adapter_if_t tcpip_if, ip6_addr_t *if_ip6)
+{
+    struct netif *p_netif;
+
+    if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || if_ip6 == NULL) {
+        return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
+    }
+
+    p_netif = esp_netif[tcpip_if];
+    if (p_netif != NULL && netif_is_up(p_netif) && ip6_addr_ispreferred(netif_ip6_addr_state(p_netif, 0))) {
+        memcpy(if_ip6, &p_netif->ip6_addr[0], sizeof(ip6_addr_t));
+    } else {
+        return ESP_FAIL;
+    }
+    return ESP_OK;
+}
+
 #if 0
 esp_err_t tcpip_adapter_get_mac(tcpip_adapter_if_t tcpip_if, uint8_t mac[6])
 {