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Max Krasnyansky e35259a953 tun: Persistent devices can get stuck in xoff state 
The scenario goes like this. App stops reading from tun/tap.
TX queue gets full and driver does netif_stop_queue().
App closes fd and TX queue gets flushed as part of the cleanup.
Next time the app opens tun/tap and starts reading from it but
the xoff state is not cleared. We're stuck.
Normally xoff state is cleared when netdev is brought up. But
in the case of persistent devices this happens only during
initial setup.

The fix is trivial. If device is already up when an app opens
it we clear xoff state and that gets things moving again.

Signed-off-by: Max Krasnyansky <maxk@qualcomm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-10 16:59:11 -07:00
..
accessibility Kconfig: improved help for CONFIG_ACCESSIBILITY 2008-05-08 10:46:55 -07:00
acorn/char
acpi dock: bay: Don't call acpi_walk_namespace() when ACPI is disabled. 2008-06-26 01:55:27 -04:00
amba
ata Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2008-06-20 12:46:47 -07:00
atm atm: [he] send idle cells instead of unassigned when in SDH mode 2008-06-16 17:21:27 -07:00
auxdisplay
base dev_set_name: fix missing kernel-doc 2008-06-11 16:50:40 -07:00
block cciss: add new hardware support 2008-06-12 18:05:40 -07:00
bluetooth hci_usb.h: fix hard-to-trigger race 2008-05-02 16:45:10 -07:00
cdrom [POWERPC] iSeries: Remove unused mail address 2008-05-23 16:45:04 +10:00
char tty: Fix inverted logic in send_break 2008-07-02 19:21:48 -07:00
clocksource
connector CONNECTOR: add a proc entry to list connectors 2008-06-27 20:03:24 -07:00
cpufreq Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2008-06-09 11:27:55 -07:00
cpuidle cpuidle acpi driver: fix oops on AC<->DC 2008-06-11 19:13:45 -04:00
crypto
dca
dio
dma iop-adma: fixup some kzalloc/memset confusions 2008-05-20 13:51:20 -07:00
edac edac: mpc85xx: fix building as a module 2008-05-24 09:56:13 -07:00
eisa
firewire firewire: fw-sbp2: fix parsing of logical unit directories 2008-06-27 20:55:00 +02:00
firmware edd: fix incorrect return of 1 from module_init 2008-06-06 11:29:09 -07:00
gpio gpiolib: fix off by one errors 2008-05-24 09:56:11 -07:00
hid HID: remove CVS keywords 2008-05-20 16:44:43 +02:00
hwmon hwmon: (lm75) sensor reading bugfix 2008-06-19 06:50:32 -04:00
i2c I2C: S3C2410: Add MODULE_ALIAS() for s3c2440 device. 2008-07-01 14:30:38 +01:00
ide ide: fix /proc/ide/ide?/mate reporting 2008-06-30 20:14:45 +02:00
ieee1394 ieee1394: Kconfig menu touch-up 2008-06-19 00:12:36 +02:00
infiniband IB/mthca: Clear ICM pages before handing to FW 2008-06-23 09:29:58 -07:00
input drivers/input/ff-core.c needs <linux/sched.h> 2008-07-02 18:40:08 -07:00
isdn drivers/isdn/sc/ioctl.c: add missing kfree 2008-06-12 18:05:41 -07:00
leds LEDS: fix race in device_create 2008-05-20 13:31:55 -07:00
lguest x86: fix NULL pointer deref in __switch_to 2008-06-20 13:26:18 +02:00
macintosh [POWERPC] Build fix for drivers/macintosh/mediabay.c 2008-06-16 15:00:47 +10:00
mca
md Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm 2008-07-02 18:55:17 -07:00
media V4L/DVB (8178): uvc: Fix compilation breakage for the other drivers, if uvc is selected 2008-07-02 08:58:15 -03:00
memstick
message [SCSI] fusion mpt: fix target missing after resetting external raid 2008-05-27 10:58:09 -05:00
mfd HTC_EGPIO is ARM-only 2008-05-21 16:56:00 -07:00
misc thinkpad-acpi: fix LED handling on older ThinkPads 2008-06-11 19:13:45 -04:00
mmc mmc: wbsd: initialize tasklets before requesting interrupt 2008-06-12 18:05:41 -07:00
mtd Merge git://git.infradead.org/~dwmw2/mtd-2.6.26 2008-06-06 11:31:18 -07:00
net tun: Persistent devices can get stuck in xoff state 2008-07-10 16:59:11 -07:00
nubus
of rtc-ds1374: rename device to just "ds1374" 2008-06-06 11:29:10 -07:00
oprofile oprofile: don't request cache line alignment for cpu_buffer 2008-05-14 19:11:12 -07:00
parisc drivers/parisc: replace remaining __FUNCTION__ occurrences 2008-05-15 10:38:54 -04:00
parport debugobjects: add timer specific object debugging code 2008-04-30 08:29:53 -07:00
pci PCI: acpiphp: cleanup notify handler on all root bridges 2008-07-02 11:27:30 -07:00
pcmcia electra_cf: Add MODULE_DEVICE_TABLE() 2008-05-27 16:07:45 -05:00
pnp PNPACPI: use _CRS IRQ descriptor length for _SRS 2008-06-11 19:13:46 -04:00
power power_supply: Fix race in power_supply_uevent 2008-06-10 02:13:51 +04:00
ps3 [POWERPC] PS3: Remove unsupported wakeup sources 2008-05-02 15:00:44 +10:00
rapidio
rtc [ARM] 5109/1: Mark rtc sa1100 driver as wakeup source before registering it 2008-06-22 14:32:12 +01:00
s390 Merge branch 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm 2008-06-11 10:35:44 -07:00
sbus sbus bpp: instances missed in s/dev_name/bpp_dev_name/ 2008-05-21 16:55:59 -07:00
scsi [SCSI] esp: tidy up target reference counting 2008-06-25 12:36:13 -05:00
serial Blackfin Serial Driver: Use timer to poll CTS PIN instead of workqueue. 2008-06-19 17:46:39 +08:00
sh
sn
spi spi: fix refcount-related spidev oops-on-rmmod 2008-06-06 11:29:08 -07:00
ssb ssb-pcicore: Fix IRQ-vector init on embedded devices 2008-07-07 15:31:40 -04:00
tc
telephony
thermal thermal: Create CONFIG_THERMAL_HWMON=n 2008-06-25 19:25:42 -04:00
uio UIO: fix race in device_create 2008-05-20 13:31:55 -07:00
usb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2008-06-17 18:10:40 -07:00
video [ARM] 5117/1: pxafb: fix __devinit/exit annotations 2008-06-25 18:50:14 +01:00
virtio virtio: Complete feature negotation before updating status 2008-06-15 13:46:16 -07:00
w1 drivers: replace remaining __FUNCTION__ occurrences 2008-04-30 08:29:53 -07:00
watchdog Revert "[WATCHDOG] hpwdt: Add CFLAGS to get driver working" 2008-06-24 13:09:26 +00:00
xen xen: Use wmb instead of rmb in xen_evtchn_do_upcall(). 2008-06-20 14:56:30 +02:00
zorro
Kconfig Basic braille screen reader support 2008-04-30 08:29:52 -07:00
Makefile Basic braille screen reader support 2008-04-30 08:29:52 -07:00