Added emac_stack_mem_copy. Needed by the u-blox ODIN-W2 driver.

Author: andreas.larsson

features/FEATURE_LWIP/lwip-interface/emac_stack_lwip.cpp

@@ -47,6 +47,11 @@ void emac_stack_mem_free(emac_stack_t* stack, emac_stack_mem_t *mem)
     pbuf_free((struct pbuf*)mem);
 }
 
+void emac_stack_mem_copy(emac_stack_t* stack, emac_stack_mem_t *to, emac_stack_mem_t *from)
+{
+    pbuf_copy((struct pbuf*)to, (struct pbuf*)from);
+}
+
 void *emac_stack_mem_ptr(emac_stack_t* stack, emac_stack_mem_t *mem)
 {
     return ((struct pbuf*)mem)->payload;

features/netsocket/emac_stack_mem.h

@@ -49,6 +49,15 @@ emac_stack_mem_t *emac_stack_mem_alloc(emac_stack_t* stack, uint32_t size, uint3
  */
 void emac_stack_mem_free(emac_stack_t* stack, emac_stack_mem_t *mem);
 
+/**
+ * Copy memory
+ *
+ * @param  stack Emac stack context
+ * @param to Memory to copy to
+ * @param from Memory to copy from
+ */
+void emac_stack_mem_copy(emac_stack_t* stack, emac_stack_mem_t *to, emac_stack_mem_t *from);
+
 /**
  * Return pointer to the payload
  *