linux-stable.git/drivers/net/usb/cdc_ether.c, branch linux-3.2.y

net: cdc_ether: fix divide by 0 on bad descriptors

2017-11-26T13:51:11+00:00

commit 2cb80187ba065d7decad7c6614e35e07aec8a974 upstream.

Setting dev->hard_mtu to 0 will cause a divide error in
usbnet_probe. Protect against devices with bogus CDC Ethernet
functional descriptors by ignoring a zero wMaxSegmentSize.

Signed-off-by: Bjørn Mork 
Acked-by: Oliver Neukum 
Signed-off-by: David S. Miller 
[bwh: Backported to 3.2: parsing code is organised differently]
Signed-off-by: Ben Hutchings

net: usb: cdc_ether: Use wwan interface for Telit modules

2013-10-26T20:06:05+00:00

commit 0092820407901a0b2c4e343e85f96bb7abfcded1 upstream.

Signed-off-by: Fabio Porcedda 
Acked-by: Oliver Neukum 
Signed-off-by: David S. Miller 
Signed-off-by: Ben Hutchings

cdc_ether: add Novatel USB551L device IDs for FLAG_WWAN

2012-05-20T21:56:49+00:00

commit 4e6304b8420aba5311ba21fd68dab2924ae4d91a upstream.

Needs to be tagged with FLAG_WWAN, which since it has generic
descriptors, won't happen if we don't override the generic
driver info.

Cc: Oliver Neukum 
Signed-off-by: Dan Williams 
Acked-by: Oliver Neukum 
Signed-off-by: David S. Miller 
Signed-off-by: Ben Hutchings

cdc_ether: Ignore bogus union descriptor for RNDIS devices

2012-05-20T21:56:41+00:00

commit 6eddcb4c82883451aec3be1240f17793370fa62f upstream.

Some RNDIS devices include a bogus CDC Union descriptor pointing
to non-existing interfaces.  The RNDIS code is already prepared
to handle devices without a CDC Union descriptor by hardwiring
the driver to use interfaces 0 and 1, which is correct for the
devices with the bogus descriptor as well. So we can reuse the
existing workaround.

Cc: Markus Kolb 
Cc: Iker Salmón San Millán 
Cc: Jonathan Nieder 
Cc: Oliver Neukum 
Cc: 655387@bugs.debian.org
Signed-off-by: Bjørn Mork 
Signed-off-by: David S. Miller 
Signed-off-by: Ben Hutchings

Move Logitech Harmony 900 from cdc_ether to zaurus

2012-03-12T19:31:25+00:00

commit ee932bf9acb2e2c6a309e808000f24856330e3f9 upstream.

In the current kernel implementation, the Logitech Harmony 900 remote
control is matched to the cdc_ether driver through the generic
USB_CDC_SUBCLASS_MDLM entry.  However, this device appears to be of the
pseudo-MDLM (Belcarra) type, rather than the standard one.  This patch
blacklists the Harmony 900 from the cdc_ether driver and whitelists it for
the pseudo-MDLM driver in zaurus.

Signed-off-by: Scott Talbert 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net/usb: Misc. fixes for the LG-VL600 LTE USB modem

2011-11-14T05:49:05+00:00

Add checking for valid magic values (needed for stability in the event
corrupted packets are received) and remove some other unneeded checks.
Also, fix flagging device as WWAN (Bugzilla bug #39952).

Signed-off-by: Mark Kamichoff 
Signed-off-by: David S. Miller

net/usb: mark LG VL600 LTE modem ethernet interface as WWAN

2011-05-10T22:03:50+00:00

Like other mobile broadband device ethernet interfaces, mark the LG
VL600 with the 'wwan' devtype so userspace knows it needs additional
configuration via the AT port before the interface can be used.

Signed-off-by: Dan Williams 
Signed-off-by: David S. Miller

usbnet: add support for some Huawei modems with cdc-ether ports

2011-04-29T19:40:20+00:00

Some newer Huawei devices (T-Mobile Rocket, others) have cdc-ether
compatible ports, so recognize and expose them.

Signed-off-by: Dan Williams 
Acked-by: Oliver Neukum 
Signed-off-by: David S. Miller

usbnet: use eth%d name for known ethernet devices

2011-04-02T03:12:02+00:00

The documentation for the USB ethernet devices suggests that
only some devices are supposed to use usb0 as the network interface
name instead of eth0. The logic used there, and documented in
Kconfig for CDC is that eth0 will be used when the mac address
is a globally assigned one, but usb0 is used for the locally
managed range that is typically used on point-to-point links.

Unfortunately, this has caused a lot of pain on the smsc95xx
device that is used on the popular pandaboard without an
EEPROM to store the MAC address, which causes the driver to
call random_ether_address().

Obviously, there should be a proper MAC addressed assigned to
the device, and discussions are ongoing about how to solve
this, but this patch at least makes sure that the default
interface naming gets a little saner and matches what the
user can expect based on the documentation, including for
new devices.

The approach taken here is to flag whether a device might be a
point-to-point link with the new FLAG_POINTTOPOINT setting in
the usbnet driver_info. A driver can set both FLAG_POINTTOPOINT
and FLAG_ETHER if it is not sure (e.g. cdc_ether), or just one
of the two.  The usbnet framework only looks at the MAC address
for device naming if both flags are set, otherwise it trusts the
flag.

Signed-off-by: Arnd Bergmann 
Tested-by: Andy Green 
Signed-off-by: David S. Miller

net/usb: Ethernet quirks for the LG-VL600 4G modem

2011-03-30T09:35:08+00:00

This adds a driver for the CDC Ethernet part of this modem.  The
device's ID is blacklisted in cdc_ether.c and is white-listed in
this new driver because of the quirks needed to make it useful.
The modem's firmware exposes a CDC ACM port for modem control and a
CDC Ethernet port for network data.  The descriptors look fine but
both ports actually are some sort of multiplexers requiring non-
standard headers added/removed from every packet or they get
ignored.  All information is based on a usb traffic log from a
Windows machine.

On the Verizon 4G network I've seen speeds up to 1.1MB/s so far with
this driver, a speed-o-meter site reports 16.2Mbps/10.5Mbps.
Userspace scripts are required to talk to the CDC ACM port.

Signed-off-by: Andrzej Zaborowski 
Signed-off-by: David S. Miller