Thank you Andrew... I had been concentrating on the stack code. I'll take a closer look at the state machine.
Dan -----Original Message----- From: Andrew Lunn [mailto:[EMAIL PROTECTED] Sent: Sunday, July 08, 2007 1:37 PM To: Daniel Paape Cc: ecos-discuss@ecos.sourceware.org Subject: Re: [ECOS] dhcp fails on second ethernet port On Fri, Jul 06, 2007 at 11:36:21AM -0500, Daniel Paape wrote: > Hello, > > I'm running eCos2.1 on a MIPS variant (w/ bsd_tcip) and am having some trouble getting the second Ethernet port to configure via DHCP.? Both ports are connected to the same switch.? Eth0 has a statically configured (10.9.8.188) address while eth1 is set to configure from a DHCP server providing 192.168.20.x addresses.? If I reverse the assignments (eth0 DHCP & eth1 static) the ports work fine.? I am not calling 'init_all_networks()' rather, I call (what I believe to be) the common init code 'cyg_net_init()' and then by way of two threads each associated with a specific port, " call 'dhcp_config(port)' or 'init_net("ethx", &bootp_data)'. > > When the second port attempts DHCP, the DISCOVER packets never make it out onto the wire, which I believe is due to the variable 'isbcast' in the 'ip_output routine evaluating to zero as a consequence of the RTF_HOST flag being set.? It's as if -any- established route interferes with subsequent DHCP configuration. > > Does anyone have any idea as to what might be occurring? I think you are right about a route on the other interface causing problems. Take a look at the state machine and the way it clears out the routing tables when doing DHCP. It might be better to use init_all_network interfaces(). Andrew -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
