Re: [ECOS] SNMP shows zero tx packets?

[Gary Thomas <gthomas@redhat.com>]

On 04-Jan-2001 Andrew Lunn wrote:
> On Thu, Jan 04, 2001 at 09:14:50AM +0100, Andrew Lunn wrote:
>> You need to look in packages/net/snmp/agent/mibgroups/mibII/inferfaces.c
>> 
>> The offending bit of code is 
>> 
>>     case IFOUTUCASTPKTS:
>>         long_ret = ifp->if_opackets - ifp->if_omcasts;
>>         return (unsigned char *) &long_ret;
>>  
>> This is returning the number of multicast packets output!
>> It should return if_opackets.
> 
> Duh, i should not better than to reply before drinking the mornings
> first cup of coffee. That line is correct.
> 
> Thats seems to be missing is code to increment if_opackets. I cannot
> find that anyway. Realy you need to go back to the OpenBSD sources and
> find out where it increments the counter. I suspect its either in the
> device driver itself, or the generic ethernet layer between the driver
> and the stack.

Correct you are.  This is something I missed when abstracting the device
drivers [eCos drivers know nothing of the OpenBSD stack environment].

This patch oughta do the trick:
Index: io/eth/current/src/net/eth_drv.c
===================================================================
RCS file: /home/cvs/ecc/ecc/io/eth/current/src/net/eth_drv.c,v
retrieving revision 1.10
diff -u -5 -p -r1.10 eth_drv.c
--- io/eth/current/src/net/eth_drv.c    2000/12/11 16:41:27     1.10
+++ io/eth/current/src/net/eth_drv.c    2001/01/04 13:26:14
@@ -554,11 +554,13 @@ static struct mbuf *mbuf_key;
 static void
 eth_drv_tx_done(struct eth_drv_sc *sc, CYG_ADDRESS key, int status)
 {
     struct ifnet *ifp = &sc->sc_arpcom.ac_if;
     struct mbuf *m0 = (struct mbuf *)key;
+
     // Check for errors here (via 'status')
+    ifp->if_opackets++;
     // Done with packet
     mbuf_key = m0;
     m_freem(m0);
     // Start another if possible
     eth_drv_send(ifp);