David Vrabel 26c0e10258 xen-netback: support frontends without feature-rx-notify again ... Commit bc96f648df (xen-netback: make feature-rx-notify mandatory) incorrectly assumed that there were no frontends in use that did not support this feature. But the frontend driver in MiniOS does not and since this is used by (qemu) stubdoms, these stopped working. Netback sort of works as-is in this mode except: - If there are no Rx requests and the internal Rx queue fills, only the drain timeout will wake the thread. The default drain timeout of 10 s would give unacceptable pauses. - If an Rx stall was detected and the internal Rx queue is drained, then the Rx thread would never wake. Handle these two cases (when feature-rx-notify is disabled) by: - Reducing the drain timeout to 30 ms. - Disabling Rx stall detection. Reported-by: John <jw@nuclearfallout.net> Tested-by: John <jw@nuclearfallout.net> Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-12-18 12:49:49 -05:00
..
accessibility
acpi	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
amba	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
ata	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
atm	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
auxdisplay
base	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
bcma	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2014-12-11 17:56:37 -08:00
block	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
bluetooth	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next	2014-12-15 13:23:09 -05:00
bus	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
cdrom
char	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
clk	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
clocksource	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2014-12-11 17:56:37 -08:00
connector
coresight
cpufreq	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
cpuidle	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
crypto	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
dca
devfreq
dio
dma	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
dma-buf
edac	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
eisa
extcon	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
firewire
firmware	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
fmc
gpio	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
gpu	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2014-12-12 10:26:47 -08:00
hsi	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
hv	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
hwmon	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
hwspinlock
i2c	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
ide	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
idle
iio	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-12-11 14:27:06 -08:00
input	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
iommu	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
ipack
irqchip	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
isdn	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-12-12 10:08:06 -08:00
leds	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
lguest
macintosh
mailbox	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
mcb
md	Three fixes for md	2014-12-14 12:13:05 -08:00
media	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
memory	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
memstick
message
mfd	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
misc	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
mmc	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
mtd	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
net	xen-netback: support frontends without feature-rx-notify again	2014-12-18 12:49:49 -05:00
nfc	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
ntb
nubus
of	Merge branch 'i2c/for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2014-12-14 12:54:40 -08:00
oprofile
parisc
parport	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
pci	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
pcmcia	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
phy
pinctrl	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
platform	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
pnp
power	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
powercap
pps
ps3
ptp
pwm
rapidio
ras
regulator	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
remoteproc	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
reset	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
rpmsg
rtc	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
s390	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
sbus
scsi	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
sfi
sh
sn
soc	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
spi	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
spmi
ssb	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2014-12-11 17:56:37 -08:00
staging	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
target	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-12-12 10:08:06 -08:00
tc
thermal	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
thunderbolt
tty	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
uio	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
usb	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
uwb
vfio
vhost	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-12-11 14:27:06 -08:00
video	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
virt
virtio	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
vlynq
vme
w1	Char/Misc driver patches for 3.19-rc1	2014-12-14 16:43:47 -08:00
watchdog	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
xen	xen: features and fixes for 3.19-rc0	2014-12-11 18:15:33 -08:00
zorro
Kconfig
Makefile