[lwip-users] Loopback problems

[Fabian Koch]

Hey all,

I still have the Problem that I can't
determine a Broadcast on higher levels (netconn/netbuf), which I need.
I saw the SOF_BROADCAST option added
in 1.3.1, but that won't help me unless I'm willing to rewrite a lot of
our code (which I'm not).
The other problem is that we treat LwIP
as external software and thus don't change the code. So I need to ask you
whether you could take the following changes into mainline.


udp.h: Lines 66-69
...
#define
UDP_FLAGS_NOCHKSUM 0x01U
#define
UDP_FLAGS_UDPLITE  0x02U
#define
UDP_FLAGS_CONNECTED  0x04U
+
#define
UDP_FLAGS_IS_BROADCAST  0x08U
...

udp.c: Lines 280-290
...
    if
(pcb != NULL) {
      snmp_inc_udpindatagrams();
+      if(broadcast){
+        udp_setflags(pcb,
udp_flags(pcb) | UDP_FLAGS_IS_BROADCAST);
+      } else
{
+        udp_setflags(pcb,
udp_flags(pcb) & ~UDP_FLAGS_IS_BROADCAST);
+      }
      /*
callback */
      if
(pcb->recv != NULL) {
        /*
now the recv function is responsible for freeing p */
        pcb->recv(pcb->recv_arg,
pcb, p, &(iphdr->src), src);
...

does this make sense for you?
Is the use of the flags field okay for
this?

regards,
Fabian