update it

lib/nas/nas_types.h

@@ -749,7 +749,7 @@ ED2(c_uint8_t paging_time_window:4;,
  * O TLV 3-102 */
 typedef struct _nas_access_point_name_t {
     c_uint8_t length;
-    c_uint8_t access_point_name_value[MAX_APN_LEN];
+    c_int8_t apn[MAX_APN_LEN];
 } __attribute__ ((packed)) nas_access_point_name_t;
 
 /* 9.9.4.4 ESM cause

src/hss/hss_context.c

@@ -64,7 +64,8 @@ status_t hss_context_init(void)
     pdn = hss_pdn_add();
     d_assert(pdn, return -1, "Profile context add failed");
 
-    strcpy(pdn->apn, "Internet");
+    pdn->apn[0] = 0x08;
+    strcpy(pdn->apn+1, "internet");
 
     pdn->type = PDN_TYPE_IPV4;
 

src/mme/esm_handler.c

@@ -28,6 +28,15 @@ void esm_handle_information_response(mme_esm_t *esm,
     pkbuf_t *pkbuf = NULL;
     status_t rv;
 
+    if (esm_information_response->presencemask &
+            NAS_ESM_INFORMATION_RESPONSE_ACCESS_POINT_NAME_PRESENT)
+    {
+        esm->pdn = mme_pdn_find_by_apn(
+                esm_information_response->access_point_name.apn);
+        d_assert(esm->pdn, return, "No PDN Context[APN:%s])", 
+            esm_information_response->access_point_name.apn);
+    }
+
     rv = mme_s11_build_create_session_req(&pkbuf, esm);
     d_assert(rv == CORE_OK, return, "S11 build error");
 

src/mme/mme_context.c

@@ -345,6 +345,22 @@ pdn_t* mme_pdn_find_by_id(pdn_id_t id)
     return pdn;
 }
 
+pdn_t* mme_pdn_find_by_apn(c_int8_t *apn)
+{
+    pdn_t *pdn = NULL;
+    
+    pdn = list_first(&self.pdn_list);
+    while (pdn)
+    {
+        if (strcmp(pdn->apn, apn) == 0)
+            break;
+
+        pdn = list_next(pdn);
+    }
+
+    return pdn;
+}
+
 pdn_t* mme_pdn_first()
 {
     return list_first(&self.pdn_list);

src/mme/mme_context.h

@@ -166,8 +166,10 @@ typedef struct _mme_esm_t {
 
     c_uint8_t       pti;    /** Procedure Trasaction Identity */
 
-    mme_ue_t        *ue;
     mme_sgw_t       *sgw;
+    pdn_t           *pdn;
+
+    mme_ue_t        *ue;
 } mme_esm_t;
 
 CORE_DECLARE(status_t)      mme_context_init(void);
@@ -194,6 +196,7 @@ CORE_DECLARE(pdn_t*)        mme_pdn_add(pdn_id_t id);
 CORE_DECLARE(status_t)      mme_pdn_remove(pdn_t *pdn);
 CORE_DECLARE(status_t)      mme_pdn_remove_all(void);
 CORE_DECLARE(pdn_t*)        mme_pdn_find_by_id(pdn_id_t id);
+CORE_DECLARE(pdn_t*)        mme_pdn_find_by_apn(c_int8_t *apn);
 CORE_DECLARE(pdn_t*)        mme_pdn_first(void);
 CORE_DECLARE(pdn_t*)        mme_pdn_next(pdn_t *pdn);
 

src/mme/mme_s11_build.c

@@ -11,8 +11,9 @@
 status_t mme_s11_build_create_session_req(pkbuf_t **pkbuf, mme_esm_t *esm)
 {
     status_t rv;
-    mme_ue_t *ue = NULL;
+    pdn_t *pdn = NULL;
     mme_sgw_t *sgw = NULL;
+    mme_ue_t *ue = NULL;
     gtp_message_t gtp_message;
     gtp_create_session_request_t *req = &gtp_message.create_session_request;
 
@@ -28,10 +29,12 @@ status_t mme_s11_build_create_session_req(pkbuf_t **pkbuf, mme_esm_t *esm)
     gtp_ue_timezone_t ue_timezone;
 
     d_assert(esm, return CORE_ERROR, "Null param");
-    ue = esm->ue;
-    d_assert(ue, return CORE_ERROR, "Null param");
+    pdn = esm->pdn;
+    d_assert(pdn, return CORE_ERROR, "Null param");
     sgw = esm->sgw;
     d_assert(sgw, return CORE_ERROR, "Null param");
+    ue = esm->ue;
+    d_assert(ue, return CORE_ERROR, "Null param");
 
     memset(&gtp_message, 0, sizeof(gtp_message_t));