Re: Network interrupts
From: Bernhard Gätzschmann (bgaetzschmann_at_sbs.com)
Date: 07/12/04
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Date: Mon, 12 Jul 2004 16:40:53 +0200
On 5 Jul 2004 23:09:14 -0700, guruprasad_p@lycos.com (Guruprasad
Prahallad) wrote:
>Hi All,
>
>I am a newbie trying to bring up a board on MontaVista Linux. The
>board has an Intel IOP321 processor with an ARM core. The network
>interface is an Intel 82544EI. I have got as far as registering an ISR
>for the ethernet and entering the ISR. The logs seem to suggest that
>the interface was configured correctly. Following the config, the
>kernel is trying to connect to an NFS server (for the rootfs) but
>tcpdump on the server shows not a single packet from this interface.
>I am printing the ICR (interrupt cause read) register inside the
>handler and below is the output I see:
>=============================================================
>Intel(R) PRO/1000 Network Driver - version 5.0.43
>Copyright (c) 1999-2003 Intel Corporation.
>DEBUG:::: Registering driver e1000 with PCI
>eth0: Intel(R) PRO/1000 Network Connection
>NET4: Linux TCP/IP 1.0 for NET4.0
>IP Protocols: ICMP, UDP, TCP
>IP: routing cache hash table of 1024 buckets, 8Kbytes
>TCP: Hash tables configured (established 8192 bind 16384)
>DEBUG:::: Device : lo, User dev:
>DEBUG:::: Device : eth0, User dev:
>DEBUG::::: Registering IRQ handler for e1000, IRQ# = 30
>DEBUG::::: IRQ registered successfully
>DEBUG::::: e1000_intr: icr = 6
>DEBUG::::: e1000_intr: icr = 16
>IP-Config: Complete:
> device=eth0, addr=172.20.41.42, mask=255.255.240.0,
>gw=172.20.41.47,
> host=172.20.41.42, domain=, nis-domain=(none),
> bootserver=172.20.35.70, rootserver=172.20.35.70, rootpath=
>NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
>NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com
>Looking up port of RPC 100003/2 on 172.20.35.70
>DEBUG::::: e1000_intr: icr = 16
>DEBUG::::: e1000_intr: icr = 16
>DEBUG::::: e1000_intr: icr = 16
>....
>===============================================================
>Could anyone please tell me what could have gone wrong here. Is there
>anything else I need to do before I can see some packets on the wire?
>Any help or pointers would be really appreciated.
>
>TIA,
>Guru
I've got a similar problem with the nfs boot.
Can anybody give me a hint how to solve this problem.
Thanks in advance
Bernhard
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