Function pbuf_header_force

components/net/lwip/lwip-2.1.2/src/core/pbuf.c:655–659

* Same as pbuf_header but does not check if 'header_size > 0' is allowed. * This is used internally only, to allow PBUF_REF for RX. */

 * This is used internally only, to allow PBUF_REF for RX.
 */
u8_t
pbuf_header_force(struct pbuf *p, s16_t header_size_increment)
{
  return pbuf_header_impl(p, header_size_increment, 1);
}

/** Similar to pbuf_header(-size) but de-refs header pbufs for (size >= p->len)
 *