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path: root/drivers/net/usb/sierra_net.c
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2020-11-12net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 aliasHeiner Kallweit
Replace usbnet_get_stats64() with new identical core function dev_get_tstats64() in all users and remove usbnet_get_stats64(). Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-05-05net: sierra_net: Remove unused inline functionYueHaibing
There's no callers in-tree Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-09treewide: Use sizeof_field() macroPankaj Bharadiya
Replace all the occurrences of FIELD_SIZEOF() with sizeof_field() except at places where these are defined. Later patches will remove the unused definition of FIELD_SIZEOF(). This patch is generated using following script: EXCLUDE_FILES="include/linux/stddef.h|include/linux/kernel.h" git grep -l -e "\bFIELD_SIZEOF\b" | while read file; do if [[ "$file" =~ $EXCLUDE_FILES ]]; then continue fi sed -i -e 's/\bFIELD_SIZEOF\b/sizeof_field/g' $file; done Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com> Link: https://lore.kernel.org/r/20190924105839.110713-3-pankaj.laxminarayan.bharadiya@intel.com Co-developed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: David Miller <davem@davemloft.net> # for net
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13Thomas Gleixner
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-18net: usb: Convert timers to use timer_setup()Kees Cook
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Woojung Huh <woojung.huh@microchip.com> Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Philippe Reynes <tremyfr@gmail.com> Cc: Jarod Wilson <jarod@redhat.com> Cc: Arvind Yadav <arvind.yadav.cs@gmail.com> Cc: "Bjørn Mork" <bjorn@mork.no> Cc: "Stefan Brüns" <stefan.bruens@rwth-aachen.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: linux-usb@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-03net: usbnet: support 64bit statsGreg Ungerer
Add support for the net stats64 counters to the usbnet core. With that in place put the hooks into every usbnet driver to use it. This is a strait forward addition of 64bit counters for RX and TX packet and byte counts. It is done in the same style as for the other net drivers that support stats64. Note that the other stats fields remain as 32bit sized values (error counts, etc). The motivation to add this is that it is not particularly difficult to get the RX and TX byte counts to wrap on 32bit platforms. Signed-off-by: Greg Ungerer <gerg@linux-m68k.org> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-21net: usb: sierra_net: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. As I don't have the hardware, I'd be very pleased if someone may test this patch. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-27lib/vsprintf.c: remove %Z supportAlexey Dobriyan
Now that %z is standartised in C99 there is no reason to support %Z. Unlike %L it doesn't even make format strings smaller. Use BUILD_BUG_ON in a couple ATM drivers. In case anyone didn't notice lib/vsprintf.o is about half of SLUB which is in my opinion is quite an achievement. Hopefully this patch inspires someone else to trim vsprintf.c more. Link: http://lkml.kernel.org/r/20170103230126.GA30170@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-09sierra_net: Skip validating irrelevant fields for IDLE LSIsStefan Brüns
When the context is deactivated, the link_type is set to 0xff, which triggers a warning message, and results in a wrong link status, as the LSI is ignored. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-09sierra_net: Add support for IPv6 and Dual-Stack Link Sense IndicationsStefan Brüns
If a context is configured as dualstack ("IPv4v6"), the modem indicates the context activation with a slightly different indication message. The dual-stack indication omits the link_type (IPv4/v6) and adds additional address fields. IPv6 LSIs are identical to IPv4 LSIs, but have a different link type. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Reviewed-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-20net: use core MTU range checking in USB NIC driversJarod Wilson
usbnet: - Remove stale new_mtu <= 0 check in usbnet.c - Set min_mtu = 0, max_mtu = 65535 (sub-drivers must set their own max_mtu and/or min_mtu as needed) r8152: - Set appropriate max_mtu for different variants (1500 or 9194) lan78xx: - Set max_mtu = 9000 asix_driver: - max_mtu = 16384 for ax88178 variant ax88179: - max_mtu = 4088 cdc_ncm: - max_mtu from hardware cdc-phonet: - min_mtu = 6, max_mtu = 65541 sierra_net: - max_mtu = 1500, call usbnet_change_mtu directly - sierra_net_change_mtu checked for MTU > 1500, then called usbnet_change_mtu, but if we set max_mtu to let the network core handle the range check, then we can simply call usbnet_change_mtu directly smsc75xx: - max_mtu = 9000 CC: netdev@vger.kernel.org CC: Woojung Huh <woojung.huh@microchip.com> CC: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com> CC: Hayes Wang <hayeswang@realtek.com> CC: Oliver Neukum <oneukum@suse.com> CC: Steve Glendinning <steve.glendinning@shawell.net> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-06usb: Fix FSF address in file headersJeff Kirsher
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Oliver Neukum <oliver@neukum.org> CC: Steve Glendinning <steve.glendinning@shawell.net> CC: Oliver Neukum <oneukum@suse.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-08sierra_net: keep status interrupt URB activeDan Williams
The driver and firmware sync up through SYNC messages, and the firmware's affirmative reply to these SYNC messages appears to be the "Reset" indication received via the status interrupt endpoint. Thus the driver needs the status interrupt endpoint always active so that the Reset indication can be received even if the netdev is closed, which is the case right after device insertion. If the Reset indication is not received by the driver, it continues sending SYNC messages to the firmware, which crashes about 10 seconds later and the device stops responding. Signed-off-by: Dan Williams <dcbw@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-11usbnet: sierra: apply usbnet_link_changeMing Lei
Use usbnet_link_change to handle link change centrally. Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04drivers: net: usb: Remove unnecessary alloc/OOM messagesJoe Perches
alloc failures already get standardized OOM messages and a dump_stack. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-06ethtool: fix drvinfo strings set in driversJiri Pirko
Use strlcpy where possible to ensure the string is \0 terminated. Use always sizeof(string) instead of 32, ETHTOOL_BUSINFO_LEN and custom defines. Use snprintf instead of sprint. Remove unnecessary inits of ->fw_version Remove unnecessary inits of drvinfo struct. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-28net: sierra: shut up sparse restricted type warningsBjørn Mork
Removes the warnings drivers/net/usb/sierra_net.c:343:45: warning: incorrect type in assignment (different base types) drivers/net/usb/sierra_net.c:343:45: expected unsigned short [unsigned] [short] [usertype] <noident> drivers/net/usb/sierra_net.c:343:45: got restricted __be16 [usertype] <noident> and drivers/net/usb/sierra_net.c:658:18: warning: cast to restricted __le16 Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-26usbnet: sierra_net: apply introduced usb command APIsMing Lei
Acked-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: net/netfilter/nfnetlink_log.c net/netfilter/xt_LOG.c Rather easy conflict resolution, the 'net' tree had bug fixes to make sure we checked if a socket is a time-wait one or not and elide the logging code if so. Whereas on the 'net-next' side we are calculating the UID and GID from the creds using different interfaces due to the user namespace changes from Eric Biederman. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-10sierra_net: Endianess bug fix.Lennart Sorensen
I discovered I couldn't get sierra_net to work on a powerpc. Turns out the firmware attribute check assumes the system is little endian and hence fails because the attributes is a 16 bit value. Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-07drivers/net/usb/sierra_net.c: removes unnecessary semicolonPeter Senna Tschudin
removes unnecessary semicolon Found by Coccinelle: http://coccinelle.lip6.fr/ Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-03net: sierra_net: rx_urb_size is constantBjørn Mork
The rx_urb_size is set to the same value for every device supported by this driver. No need to keep a per-device data structure to do that. Replacing with a macro constant. This was the last device specific info, and removing it allows us to delete the sierra_net_info_data struct. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-03net: sierra_net: make private symbols staticBjørn Mork
Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-14net: sierra_net: replace whitelist with ifnumber matchBjørn Mork
Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-06net: sierra_net: device IDs for Aircard 320U++Bjørn Mork
Adding device IDs for Aircard 320U and two other devices found in the out-of-tree version of this driver. Cc: linux@sierrawireless.com Cc: Autif Khan <autif.mlist@gmail.com> Cc: Tom Cassidy <tomas.cassidy@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Bjørn Mork <bjorn@mork.no> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-18USB: Disable hub-initiated LPM for comms devices.Sarah Sharp
Hub-initiated LPM is not good for USB communications devices. Comms devices should be able to tell when their link can go into a lower power state, because they know when an incoming transmission is finished. Ideally, these devices would slam their links into a lower power state, using the device-initiated LPM, after finishing the last packet of their data transfer. If we enable the idle timeouts for the parent hubs to enable hub-initiated LPM, we will get a lot of useless LPM packets on the bus as the devices reject LPM transitions when they're in the middle of receiving data. Worse, some devices might blindly accept the hub-initiated LPM and power down their radios while they're in the middle of receiving a transmission. The Intel Windows folks are disabling hub-initiated LPM for all USB communications devices under a xHCI USB 3.0 host. In order to keep the Linux behavior as close as possible to Windows, we need to do the same in Linux. Set the disable_hub_initiated_lpm flag for for all USB communications drivers. I know there aren't currently any USB 3.0 devices that implement these class specifications, but we should be ready if they do. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Jan Dumon <j.dumon@option.com> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com> Cc: Jouni Malinen <jouni@qca.qualcomm.com> Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: Brett Rudley <brudley@broadcom.com> Cc: Roland Vossen <rvossen@broadcom.com> Cc: Arend van Spriel <arend@broadcom.com> Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com> Cc: Kan Yan <kanyan@broadcom.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Daniel Drake <dsd@gentoo.org> Cc: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2012-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: igmp: Avoid zero delay when receiving odd mixture of IGMP queries netdev: make net_device_ops const bcm63xx: make ethtool_ops const usbnet: make ethtool_ops const net: Fix build with INET disabled. net: introduce netif_addr_lock_nested() and call if when appropriate net: correct lock name in dev_[uc/mc]_sync documentations. net: sk_update_clone is only used in net/core/sock.c 8139cp: fix missing napi_gro_flush. pktgen: set correct max and min in pktgen_setup_inject() smsc911x: Unconditionally include linux/smscphy.h in smsc911x.h asix: fix infinite loop in rx_fixup() net: Default UDP and UNIX diag to 'n'. r6040: fix typo in use of MCR0 register bits net: fix sock_clone reference mismatch with tcp memcontrol
2012-01-09usbnet: make ethtool_ops conststephen hemminger
The ethtool_ops table of function pointers should be const. Fix all the usb network drivers. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-18USB: convert drivers/net/* to use module_usb_driver()Greg Kroah-Hartman
This converts the drivers in drivers/net/* to use the module_usb_driver() macro which makes the code smaller and a bit simpler. Added bonus is that it removes some unneeded kernel log messages about drivers loading and/or unloading. Cc: Wolfgang Grandegger <wg@grandegger.com> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Oliver Neukum <oliver@neukum.name> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: "David S. Miller" <davem@davemloft.net> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Jiri Pirko <jpirko@redhat.com> Cc: Pavel Roskin <proski@gnu.org> Cc: Yoann DI-RUZZA <y.diruzza@lim.eu> Cc: George <george0505@realtek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-12-12drivers/net: don't use flush_scheduled_work()Tejun Heo
flush_scheduled_work() is on its way out. This patch contains simple conversions to replace flush_scheduled_work() usage with direct cancels and flushes. Directly cancel the used works on driver detach and flush them in other cases. The conversions are mostly straight forward and the only dangers are, * Forgetting to cancel/flush one or more used works. * Cancelling when a work should be flushed (ie. the work must be executed once scheduled whether the driver is detaching or not). I've gone over the changes multiple times but it would be much appreciated if you can review with the above points in mind. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jay Cliburn <jcliburn@gmail.com> Cc: Michael Chan <mchan@broadcom.com> Cc: Divy Le Ray <divy@chelsio.com> Cc: e1000-devel@lists.sourceforge.net Cc: Vasanthy Kolluri <vkolluri@cisco.com> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Andrew Gallatin <gallatin@myri.com> Cc: Francois Romieu <romieu@fr.zoreil.com> Cc: Ramkrishna Vepa <ramkrishna.vepa@exar.com> Cc: Matt Carlson <mcarlson@broadcom.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Shreyas Bhatewara <sbhatewara@vmware.com> Cc: netdev@vger.kernel.org
2010-09-26drivers/net: return operator cleanupEric Dumazet
Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-03drivers/net: use __packed annotationEric Dumazet
cleanup patch. Use new __packed annotation in drivers/net/ Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-01net/usb: initiate sync sequence in sierra_net.c driverElina Pasheva
The following patch adds the initiation of the sync sequence to "sierra_net_bind()". If this step is omitted, the modem will never sync up with the host and it will not be possible to establish a data connection. Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Rory Filer <rfiler@sierrawireless.com> Tested-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-27net/usb: add sierra_net.c driverElina Pasheva
Re-submitted based on comments from netdev community. Summary of the changes: 1. Improved error handling. 2. Added the missing timeout arguments to usb_control_msg(). The following is a new Linux driver which exposes certain models of Sierra Wireless modems to the operating system as Network Interface Cards (NICs). This driver requires a version of the sierra.c driver which supports blacklisting to work properly. The blacklist in sierra.c rejects the interfaces claimed by sierra_net.c. Likewise, the sierra_net.c driver only accepts (i.e. whitelists) the interface(s) used for USB-to-WWAN traffic. The version of sierra.c which supports blacklisting is available from the sierra wireless knowledge base page for older kernels. It is also available in Linux kernel starting from version 2.6.31. This driver works with all Sierra Wireless devices configured with PID=68A3 like USB305, USB306 provided the corresponding firmware version is I2.0 (for USB305) or M3.0 (for USB306) and later. This driver will not work with earlier firmware versions than the ones shown above. In this case the driver will issue an error message indicating incompatibility and will not serve the device's USB-to-WWAN interface. Sierra_net.c sits atop a pre-existing Linux driver called usbnet.c. A series of hook functions are provided in sierra_net.c which are called by usbnet.c in response to a particular condition such as receipt or transmission of a data packet. As such, usbnet.c does most of the work of making a modem appear to the system as a network device and for properly exchanging traffic between the USB subsystem and the Network card interface. Sierra_net.c is concerned with managing the data exchanged between the USB-to-WWAN interface and the upper layers of the operating system. Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Rory Filer <rfiler@sierrawireless.com> Signed-off-by: David S. Miller <davem@davemloft.net>