Bug 85537 - (NET PCNET32) dhcp does not work with NIC
Summary: (NET PCNET32) dhcp does not work with NIC
Alias: None
Product: Fedora
Classification: Fedora
Component: initscripts
Version: 1
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Jeff Garzik
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2003-03-04 02:03 UTC by Andreas Thienemann
Modified: 2013-07-03 02:09 UTC (History)
1 user (show)

Fixed In Version: FC2
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2004-07-09 12:15:19 UTC
Type: ---

Attachments (Terms of Use)
Patch to manually disable Link-Check in ifup (656 bytes, patch)
2003-12-10 17:30 UTC, Andreas Thienemann
no flags Details | Diff

Description Andreas Thienemann 2003-03-04 02:03:14 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20021003

Description of problem:
When trying to configure an ethernet device with the AMD PCnet32/Lance chipset
the ifup script fails with the message "no link present... check cable?"

This problem is related to the check_link_down funktion in
/etc/sysconfig/network-scripts/network-functions calling both mii-tool and
ethtool which do not deliver reliable data:

| [root@dyn116 network-scripts]# ip link show eth0
| 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
|     link/ether 10:00:5a:5b:f1:35 brd ff:ff:ff:ff:ff:ff
| [root@dyn116 network-scripts]# ip addr show eth0
| 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
|     link/ether 10:00:5a:5b:f1:35 brd ff:ff:ff:ff:ff:ff
|     inet brd scope global eth0
| [root@dyn116 network-scripts]# ping -c 1
| PING ( 56(84) bytes of data.
| 64 bytes from icmp_seq=1 ttl=255 time=0.665 ms
| --- ping statistics ---
| 1 packets transmitted, 1 received, 0% packet loss, time 0ms
| rtt min/avg/max/mdev = 0.665/0.665/0.665/0.000 ms
The network is obviously working but mii-tool and ethtool think otherwise:

| [root@dyn116 network-scripts]# mii-tool eth0
| SIOCGMIIPHY on 'eth0' failed: Operation not supported

| [root@dyn116 network-scripts]# ethtool eth0
| Settings for eth0:
|         Supported ports: [ TP MII ]
|         Supported link modes:   10baseT/Half 10baseT/Full
|                                 100baseT/Half 100baseT/Full
|         Supports auto-negotiation: Yes
|         Advertised link modes:  Not reported
|         Advertised auto-negotiation: No
|         Speed: 10Mb/s
|         Duplex: Half
|         Port: MII
|         PHYAD: 0
|         Transceiver: internal
|         Auto-negotiation: off
|         Current message level: 0x00000001 (1)
|         Link detected: no

The link data from ethtool is bogus.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. ifup eth0

Actual Results:  error about no link

Expected Results:  ip address assigned via dhcp

Additional info:

Initscripts version: 7-10.1

The specific network adapter:

00:13.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
(rev 16)
        Flags: bus master, medium devsel, latency 66, IRQ 11
        I/O ports at ff80 [size=32]
        Memory at fffbfc00 (32-bit, non-prefetchable) [size=32]
        Expansion ROM at <unassigned> [disabled] [size=64K]

dmesg output:

pcnet32.c:v1.27b 01.10.2002 tsbogend@alpha.franken.de
pcnet32: PCnet/PCI II 79C970A at 0xff80, 10 00 5a 5b f1 35 assigned IRQ 11.
divert: allocating divert_blk for eth0
eth0: registered as PCnet/PCI II 79C970A
pcnet32: 1 cards_found.

Comment 1 Bill Nottingham 2003-03-04 03:53:38 UTC
Assigning to the kernel; unfortunately, when ethtool succeeds, we trust its results.

Comment 2 Andreas Thienemann 2003-12-10 17:30:45 UTC
Created attachment 96448 [details]
Patch to manually disable Link-Check in ifup

This patch checks to the ifup script in /etc/sysconfig/network-scripts checks
whether a ifcfg-device file has NO_LINK_CHECK defined and if yes skips checking
the existance of a link.
This is needed for pcnet32 e.g. as this driver always reports the link as

Comment 3 Bill Nottingham 2004-05-24 20:56:58 UTC
It has been suggested that this works in FC2. Can you test that?

Comment 4 Andreas Thienemann 2004-05-24 21:31:46 UTC
Yup, I'll test it this weekend.

Comment 5 Andreas Thienemann 2004-07-09 12:15:19 UTC
Verified. Works with FC2.

Closing bug as resolved.

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