Function pbuf_clone

components/net/lwip/lwip-2.1.2/src/core/pbuf.c:1305–1318

* @ingroup pbuf * Allocates a new pbuf of same length (via pbuf_alloc()) and copies the source * pbuf into this new pbuf (using pbuf_copy()). * * @param layer pbuf_layer of the new pbuf * @param type this parameter decides how and where the pbuf should be allocated * (@see pbuf_alloc()) * @param p the source pbuf * * @return a new pbuf or NULL if allocation fails */

 * @return a new pbuf or NULL if allocation fails
 */
struct pbuf *
pbuf_clone(pbuf_layer layer, pbuf_type type, struct pbuf *p)
{
  struct pbuf *q;
  err_t err;
  q = pbuf_alloc(layer, p->tot_len, type);
  if (q == NULL) {
    return NULL;
  }
  err = pbuf_copy(q, p);
  LWIP_UNUSED_ARG(err); /* in case of LWIP_NOASSERT */
  LWIP_ASSERT("pbuf_copy failed", err == ERR_OK);
  return q;
}

#if LWIP_CHECKSUM_ON_COPY
/**