linux-kernel - g_ether issues with linux host

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Date:	Wed, 6 Aug 2008 10:30:37 +0530
From:	Pramod Kumble <Pramod.Kumble@...infotech.com>
To:	linux-kernel@...r.kernel.org
Subject: g_ether issues with linux host

hello,

I am trying to set up USB networking between the linux host and 
developement board.I am using g_ether gadget along with the controller 
driver.Currently the code is tested with the windows host (xp service pack 
2). RNDIS option in g_ether is enabled and it works fine with windows 
host.ftp,telnet and ping are working. With the linux host i am disabling 
RNDIS and using the CDC option. Currently i am facing following problems.

1)With RedHat host (2.4.20) on connecting the cable i get the new network 
interface "eth1". The dmesg output is given below.

hub.c: new USB device 00:1f.2-1, assigned address 4
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 2, frame# 97
usb.c: USB device not responding, giving up (error=-84)
hub.c: new USB device 00:1f.2-1, assigned address 5
CDCEther.c: Found Header descriptor, CDC version 110.
CDCEther.c: Imperfect filtering support - need sw hashing
CDCEther.c: Can't use SetEthernetMulticastFilters request
CDCEther.c: detected BULK OUT packets of size 64
CDCEther.c: interrupt address: 3
CDCEther.c: interrupt interval: 32
divert: allocating divert_blk for eth1
CDCEther.c: eth1: Linux 2.6.10_mobilinux410-cl-jade-1.3.32/cl_udc Ethernet 
Gadget
CDCEther.c: eth1: 9E:3F:31:0E:40:24

But if i try to activate the network interface through "ifconfig eth1 up" 
i get following error.

CDCEther.c: usb_set_interface() failed
CDCEther.c: Attempted to set interfac 1
CDCEther.c: To alternate setting 1
CDCEther.c: CDCEther_open can't enable_net_traffic() - -1

2) With fedora linux host (2.6.21 kernel) i am getting following messages 
in dmesg output.

usb 1-2: new high speed USB device using ehci_hcd and address 4
usb 1-2: configuration #1 chosen from 1 choice
cdc_ether: probe of 1-2:1.0 failed with error -32
usbcore: registered new interface driver cdc_ether

The required modules usbnet and cdc_ether are loaded on host side, but on 
output of "ifconfig -a" i am not getting "usb0" interface.

Am i missing any configuratoin on host side.??  any help is greatly 
appreciated.

Thanks and Regards
Pramod

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