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Message-ID: <20140314075548.GX3200@reaktio.net>
Date: Fri, 14 Mar 2014 09:55:48 +0200
From: Pasi Kärkkäinen <pasik@....fi>
To: Dan Williams <dcbw@...hat.com>
Cc: Bjørn Mork <bjorn@...k.no>,
netdev@...r.kernel.org, linux-usb@...r.kernel.org,
Enrico Mioso <mrkiko.rs@...il.com>,
Oliver Neukum <oliver@...kum.org>
Subject: Re: [PATCH net-next v6 0/3] The huawei_cdc_ncm driver / E3276
problem
On Fri, Mar 14, 2014 at 12:08:12AM +0200, Pasi Kärkkäinen wrote:
> On Thu, Mar 13, 2014 at 04:41:47PM -0500, Dan Williams wrote:
> > On Thu, 2014-03-13 at 22:25 +0200, Pasi Kärkkäinen wrote:
> > > On Mon, Nov 04, 2013 at 09:50:46AM +0100, Bjørn Mork wrote:
> > > >
> > > > [quote Enrico Mioso]
> > > >
> > > > So this is a new, revised, edition of the huawei_cdc_ncm.c driver, which
> > > > supports devices resembling the NCM standard, but using it also as a mean
> > > > to encapsulate other protocols, as is the case for the Huawei E3131 and
> > > > E3251 modem devices.
> > > >
> > >
> > > Hello,
> > >
> > > I'm trying to use Huawei E3276 4G/LTE USB dongle with Linux 3.13.6 kernel,
> > > and thus i'm using the new huawei_cdc_ncm driver.
> > >
> > > I'm using the /dev/cdc-wdm0 device to send AT commands to it, and that seems to work,
> > > so the dongle seems like it's connected (also the LED on the dongle suggests it's connected).
> > >
> > > .. the problem is the wwan0 interface (well, udev renames it to wwp0s26u1u5i1) doesn't work.
> > > Launching a dhcp client on the wwp0s26u1u5i1 doesn't get any IP address.
> > >
> > > Any tips how to troubleshoot this?
> >
>
> Hi,
>
> > Which AT commands are you using to start the data connection?
> >
>
> I've been using:
>
> ATQ0 V1 E1 S0=0
> AT^NDISDUP=1,1,"internet"
> AT^DHCP?
>
Oh, I forgot to mention.. after I send AT^NDISDUP=1,1,"internet" I get this:
^NDISSTAT:1,,,"IPV4"
.. which to my understanding means it's connected (1==connected).
Also sending AT^NDISSTATQRY? results in:
^NDISSTATQRY: 1,,,"IPV4"
But I can't get an IP with dhcp client on the wwan0 interface..
-- Pasi
>
> > I believe Huawei says that DHCP on the network port is only supported if
> > network port's USB interface has Class 0x2 + SubClass [0x6 | 0xd] +
> > Protocol 0x0.
> >
>
> # lsusb | grep -i huawei
> Bus 001 Device 010: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard
>
> # lsusb -t
> ..
> |__ Port 5: Dev 10, If 0, Class=Vendor Specific Class, Driver=option, 480M
> |__ Port 5: Dev 10, If 1, Class=Vendor Specific Class, Driver=huawei_cdc_ncm, 480M
> |__ Port 5: Dev 10, If 2, Class=Mass Storage, Driver=usb-storage, 480M
> |__ Port 5: Dev 10, If 3, Class=Mass Storage, Driver=usb-storage, 480M
>
> Bus 001 Device 010: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x12d1 Huawei Technologies Co., Ltd.
> idProduct 0x1506 Modem/Networkcard
> bcdDevice 1.02
> iManufacturer 2 HUAWEI Technology
> iProduct 1 HUAWEI Mobile
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 173
> bNumInterfaces 4
> bConfigurationValue 1
> iConfiguration 3 Huawei Configuration
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 500mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 2
> bInterfaceProtocol 18
> iInterface 0
> ** UNRECOGNIZED: 05 24 00 10 01
> ** UNRECOGNIZED: 04 24 02 02
> ** UNRECOGNIZED: 05 24 01 00 00
> ** UNRECOGNIZED: 06 24 06 00 00 00
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x01 EP 1 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 2
> bInterfaceProtocol 22
> iInterface 0
> ** UNRECOGNIZED: 05 24 00 10 01
> ** UNRECOGNIZED: 06 24 1a 00 01 1f
> ** UNRECOGNIZED: 0d 24 0f 04 0f 00 00 00 ea 05 03 00 01
> ** UNRECOGNIZED: 05 24 06 01 01
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 5
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 1
> bNumEndpoints 3
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 2
> bInterfaceProtocol 22
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0040 1x 64 bytes
> bInterval 5
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x83 EP 3 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x02 EP 2 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 32
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 2
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 8 Mass Storage
> bInterfaceSubClass 6 SCSI
> bInterfaceProtocol 80 Bulk-Only
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x03 EP 3 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x84 EP 4 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 3
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 8 Mass Storage
> bInterfaceSubClass 6 SCSI
> bInterfaceProtocol 80 Bulk-Only
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x04 EP 4 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x85 EP 5 IN
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0000
> (Bus Powered)
>
>
> > Lastly, I think the E3276 has a couple of different "modes" that it can
> > switch into with usb_modeswitch too, and only some modes expose the
> > right network interface. What modeswitch command is getting sent to the
> > device?
> >
>
> This is on Fedora 20.
>
> Mar 13 23:56:36 localhost logger: usb_modeswitch: using overriding config file /etc/usb_modeswitch.d/12d1:14fe; make sure this is intended
> Mar 13 23:56:36 localhost logger: usb_modeswitch: please report any new or corrected settings; otherwise, check for outdated files
> Mar 13 23:56:36 localhost usb_modeswitch: switching device 12d1:14fe on 001/009
> Mar 13 23:56:37 localhost logger: usb_modeswitch: switched to 12d1:1506 on 001/010
>
> # cat /etc/usb_modeswitch.d/12d1:14fe
>
> # T-Mobile NL (Huawei E352)
>
> TargetVendor= 0x12d1
> TargetProductList="1506,150f,151d"
>
> MessageContent="55534243123456780000000000000011062000000100000000000000000000"
>
>
> # grep -i e3276 /etc/usb_modeswitch.d/*
> /etc/usb_modeswitch.d/12d1:156a:# Huawei E3276s-151 and E3251
>
>
> # cat /etc/usb_modeswitch.d/12d1:156a
>
> # Huawei E3276s-151 and E3251
>
> TargetVendor= 0x12d1
> TargetProductList="156b,156c"
>
> MessageContent="55534243123456780000000000000011062000000100000000000000000000"
>
>
>
> Hopefully that was enough information..
>
> Thanks!
>
> -- Pasi
>
>
> > Dan
> >
> > > I'm seeing "RX errors" listed for the interface in "ifconfig -a" output.. is that normal?
> > >
> > > The device in question is (ATI command output):
> > >
> > > Manufacturer: huawei
> > > Model: E3276
> > > Revision: 21.263.03.00.07
> > > IMEI: 863XYZXYZXYZXYZ
> > > +GCAP: +CGSM,+DS,+ES
> > >
> > > Thanks!
> > >
> > > -- Pasi
> > >
> > >
> > > > Some precisations are needed however - and I encourage discussion on this: and
> > > > that's why I'm sending this message with a broader CC.
> > > > Merging those patches might change:
> > > > - the way Modem Manager interacts with those devices
> > > > - some regressions might be possible if there are some unknown firmware
> > > > variants around (Franko?)
> > > >
> > > > First of all: I observed the behaviours of two devices.
> > > > Huawei E3131: this device doesn't accept NDIS setup requests unless they're
> > > > sent via the embedded AT channel exposed by this driver.
> > > > So actually we gain funcionality in this case!
> > > >
> > > > The second case, is the Huawei E3251: which works with standard NCM driver,
> > > > still exposing an AT embedded channel. Whith this patch set applied, you gain
> > > > some funcionality, loosing the ability to catch standard NCM events for now.
> > > > The device will work in both ways with no problems, but this has to be
> > > > acknowledged and discussed. Might be we can develop this driver further to
> > > > change this, when more devices are tested.
> > > >
> > > > We where thinking Huawei changed their interfaces on new devices - but probably
> > > > this driver only works around a nice firmware bug present in E3131, which
> > > > prevented the modem from being used in NDIS mode.
> > > >
> > > > I think committing this is definitely wortth-while, since it will allow for
> > > > more Huawei devices to be used without serial connection. Some devices like the
> > > > E3251 also, reports some status information only via the embedded AT channel,
> > > > at least in my case.
> > > > Note: I'm not subscribed to any list except the Modem Manager's one, so please
> > > > CC me, thanks!!
> > > >
> > > > [/quote]
> > > >
> > > > Enrico Mioso (3):
> > > > net: cdc_ncm: Export cdc_ncm_{tx,rx}_fixup functions for re-use
> > > > net: huawei_cdc_ncm: Introduce the huawei_cdc_ncm driver
> > > > net: cdc_ncm: remove non-standard NCM device IDs
> > > >
> > > > drivers/net/usb/Kconfig | 15 +++
> > > > drivers/net/usb/Makefile | 1 +
> > > > drivers/net/usb/cdc_ncm.c | 17 +--
> > > > drivers/net/usb/huawei_cdc_ncm.c | 230 ++++++++++++++++++++++++++++++++++++++
> > > > include/linux/usb/cdc_ncm.h | 3 +
> > > > 5 files changed, 253 insertions(+), 13 deletions(-)
> > > > create mode 100644 drivers/net/usb/huawei_cdc_ncm.c
> > > >
> > > > --
> > > > 1.7.10.4
> > > >
> > > > --
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> > > --
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> >
> >
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