mesh: define mesh_network_key and add provide memory pool for it

src/ble/mesh/mesh_network.h

@@ -50,6 +50,32 @@ typedef struct {
     uint8_t               data[29];
 } mesh_network_pdu_t;
 
+typedef struct {
+    btstack_linked_item_t item;
+
+    // index into shared global key list
+    uint16_t netkey_index;
+
+    // random net_key
+    uint8_t net_key[16];
+
+    // derivative data
+
+    // k1
+    uint8_t identity_key[16];
+    uint8_t beacon_key[16];
+
+    // k2
+    uint8_t nid;
+    uint8_t encryption_key[16];
+    uint8_t privacy_key[16];
+
+    // k3
+    uint8_t network_id[8];
+
+} mesh_network_key_t;
+
+
 #if defined __cplusplus
 }
 #endif

src/btstack_memory.c

@@ -934,6 +934,44 @@ void btstack_memory_mesh_network_pdu_free(mesh_network_pdu_t *mesh_network_pdu){
 #endif
 
 
+// MARK: mesh_network_key_t
+#if !defined(HAVE_MALLOC) && !defined(MAX_NR_MESH_NETWORK_KEYS)
+    #if defined(MAX_NO_MESH_NETWORK_KEYS)
+        #error "Deprecated MAX_NO_MESH_NETWORK_KEYS defined instead of MAX_NR_MESH_NETWORK_KEYS. Please update your btstack_config.h to use MAX_NR_MESH_NETWORK_KEYS."
+    #else
+        #define MAX_NR_MESH_NETWORK_KEYS 0
+    #endif
+#endif
+
+#ifdef MAX_NR_MESH_NETWORK_KEYS
+#if MAX_NR_MESH_NETWORK_KEYS > 0
+static mesh_network_key_t mesh_network_key_storage[MAX_NR_MESH_NETWORK_KEYS];
+static btstack_memory_pool_t mesh_network_key_pool;
+mesh_network_key_t * btstack_memory_mesh_network_key_get(void){
+    return (mesh_network_key_t *) btstack_memory_pool_get(&mesh_network_key_pool);
+}
+void btstack_memory_mesh_network_key_free(mesh_network_key_t *mesh_network_key){
+    btstack_memory_pool_free(&mesh_network_key_pool, mesh_network_key);
+}
+#else
+mesh_network_key_t * btstack_memory_mesh_network_key_get(void){
+    return NULL;
+}
+void btstack_memory_mesh_network_key_free(mesh_network_key_t *mesh_network_key){
+    // silence compiler warning about unused parameter in a portable way
+    (void) mesh_network_key;
+};
+#endif
+#elif defined(HAVE_MALLOC)
+mesh_network_key_t * btstack_memory_mesh_network_key_get(void){
+    return (mesh_network_key_t*) malloc(sizeof(mesh_network_key_t));
+}
+void btstack_memory_mesh_network_key_free(mesh_network_key_t *mesh_network_key){
+    free(mesh_network_key);
+}
+#endif
+
+
 #endif
 // init
 void btstack_memory_init(void){
@@ -995,5 +1033,8 @@ void btstack_memory_init(void){
 #if MAX_NR_MESH_NETWORK_PDUS > 0
     btstack_memory_pool_create(&mesh_network_pdu_pool, mesh_network_pdu_storage, MAX_NR_MESH_NETWORK_PDUS, sizeof(mesh_network_pdu_t));
 #endif
+#if MAX_NR_MESH_NETWORK_KEYS > 0
+    btstack_memory_pool_create(&mesh_network_key_pool, mesh_network_key_storage, MAX_NR_MESH_NETWORK_KEYS, sizeof(mesh_network_key_t));
+#endif
 #endif
 }

src/btstack_memory.h

@@ -144,9 +144,11 @@ whitelist_entry_t * btstack_memory_whitelist_entry_get(void);
 void   btstack_memory_whitelist_entry_free(whitelist_entry_t *whitelist_entry);
 sm_lookup_entry_t * btstack_memory_sm_lookup_entry_get(void);
 void   btstack_memory_sm_lookup_entry_free(sm_lookup_entry_t *sm_lookup_entry);
-// mesh_network_pdu
+// mesh_network_pdu, mesh_network_key
 mesh_network_pdu_t * btstack_memory_mesh_network_pdu_get(void);
 void   btstack_memory_mesh_network_pdu_free(mesh_network_pdu_t *mesh_network_pdu);
+mesh_network_key_t * btstack_memory_mesh_network_key_get(void);
+void   btstack_memory_mesh_network_key_free(mesh_network_key_t *mesh_network_key);
 #endif
 
 #if defined __cplusplus

tool/btstack_memory_generator.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+import os
+import sys
 
 import os
 import sys
@@ -199,12 +201,9 @@ list_of_structs = [
 ]
 list_of_le_structs = [
     ["gatt_client", "whitelist_entry", "sm_lookup_entry"],
-    ['mesh_network_pdu'] 
+    ['mesh_network_pdu', 'mesh_network_key'] 
 ]
 
-"""
-"""
-
 btstack_root = os.path.abspath(os.path.dirname(sys.argv[0]) + '/..')
 file_name = btstack_root + "/src/btstack_memory"
 print ('Generating %s.[h|c]' % file_name)