[lwip-devel] [bug #26309] Implement SOF_BROADCAST

[Frédéric Bernon]

Follow-up Comment #12, bug #26309 (project lwip):

For send operations, changes are :

in udp_sendto_if (at the begining):
  /* broadcast filter? */
  if ( ((pcb->so_options & SOF_BROADCAST) == 0) &&
ip_addr_isbroadcast(dst_ip, netif) ) {
    LWIP_DEBUGF(UDP_DEBUG | 1, ("udp_sendto_if: SOF_BROADCAST not enabled on
pcb %pn", (void *)pcb));
    return ERR_VAL;
  }

in raw_sendto, after the ip_route checking:

   /* broadcast filter? */
  if ( ((pcb->so_options & SOF_BROADCAST) == 0) &&
ip_addr_isbroadcast(ipaddr, netif) ) {
    LWIP_DEBUGF(RAW_DEBUG | 1, ("raw_sendto: SOF_BROADCAST not enabled on pcb
%pn", (void *)pcb));
    /* free any temporary header pbuf allocated by pbuf_header() */
    if (q != p) {
      pbuf_free(q);
    }
    return ERR_VAL;
  }


Next, some udp clients need to add pcb->so_options|=SOF_BROADCAST; after
udp_new : there is dhcp.c, and netbios.c


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