| lwIP
    2.0.3
    Lightweight IP stack | 
| Functions | |
| struct netbuf * | netbuf_new (void) | 
| void | netbuf_delete (struct netbuf *buf) | 
| void * | netbuf_alloc (struct netbuf *buf, u16_t size) | 
| void | netbuf_free (struct netbuf *buf) | 
| err_t | netbuf_ref (struct netbuf *buf, const void *dataptr, u16_t size) | 
| void | netbuf_chain (struct netbuf *head, struct netbuf *tail) | 
| err_t | netbuf_data (struct netbuf *buf, void **dataptr, u16_t *len) | 
| s8_t | netbuf_next (struct netbuf *buf) | 
| void | netbuf_first (struct netbuf *buf) | 
Network buffer management