From: Grant Edwards <grante@visi.com>
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] DHCP shuts down Ethernet device?
Date: Mon, 23 Apr 2001 10:38:00 -0000 [thread overview]
Message-ID: <20010423123926.A2035@visi.com> (raw)
I just discovered that when the DHCP task fails to find a
server, it then shuts down the Ethernet driver using the code:
// Shut down interface so it can be reinitialized
ifr.ifr_flags &= ~(IFF_UP | IFF_RUNNING);
if (ioctl(s, SIOCSIFFLAGS, &ifr)) { /* set ifnet flags */
perror("SIOCSIFFLAGS down");
return false;
}
This generates a call to the _stop() method in the Ethernet
driver.
I realise that if DHCP fails, the IP stack needs to be shut
down, but stopping the ethernet device entirely keeps non-IP
stuff from working. Does the DHCP code assume that there are
no non-IP network protocols, or is the above supposed to shut
down only IP networking on the device? The other drivers I've
looked at all seem to shut off the interface completely.
I think I'm going to have to either comment out the above call,
or make my Ethernet driver's _stop() method into a noop...
--
Grant Edwards
grante@visi.com
next reply other threads:[~2001-04-23 10:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-23 10:38 Grant Edwards [this message]
2001-04-23 11:30 ` Hugo Tyson
2001-04-23 12:27 ` Jonathan Larmour
2001-04-23 13:35 ` Grant Edwards
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