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Eric W. Biederman e09eff7fc1 macvtap: Fix the minor device number allocation 
On systems that create and delete lots of dynamic devices the
31bit linux ifindex fails to fit in the 16bit macvtap minor,
resulting in unusable macvtap devices.  I have systems running
automated tests that that hit this condition in just a few days.

Use a linux idr allocator to track which mavtap minor numbers
are available and and to track the association between macvtap
minor numbers and macvtap network devices.

Remove the unnecessary unneccessary check to see if the network
device we have found is indeed a macvtap device.  With macvtap
specific data structures it is impossible to find any other
kind of networking device.

Increase the macvtap minor range from 65536 to the full 20 bits
that is supported by linux device numbers.  It doesn't solve the
original problem but there is no penalty for a larger minor
device range.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-21 02:53:07 -04:00
..
accessibility
acpi Merge branches 'apei', 'bz-13195' and 'doc' into acpi 2011-09-12 20:00:00 -04:00
amba
ata drivers/ata/sata_dwc_460ex.c: add missing kfree 2011-08-18 23:58:11 -04:00
atm net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
auxdisplay
base class: Implement support for class attrs in tagged sysfs directories. 2011-10-19 19:24:15 -04:00
bcma Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
block floppy: use del_timer_sync() in init cleanup 2011-09-21 10:22:11 +02:00
bluetooth btusb: add device entry for Broadcom SoftSailing 2011-09-29 16:31:15 -03:00
cdrom
char TPM: Zero buffer after copying to userspace 2011-09-23 09:46:41 +10:00
clk
clocksource Merge branch 'common/core' into sh-latest 2011-08-08 16:33:54 +09:00
connector connector: add comm change event report to proc connector 2011-09-28 13:41:50 -04:00
cpufreq drivers/cpufreq/pcc-cpufreq.c: avoid NULL pointer dereference 2011-09-14 18:09:38 -07:00
cpuidle
crypto
dca
dio
dma dmaengine/ste_dma40: fix memory leak due to prepared descriptors 2011-09-05 17:08:26 +05:30
edac i7core_edac: fixed typo in error count calculation 2011-08-18 14:07:15 -07:00
eisa eisa/pci_eisa.c: fix BUG introduced by 005bdad7b8 2011-08-04 06:32:51 -10:00
firewire firewire: ohci: add no MSI quirk for O2Micro controller 2011-09-16 22:22:10 +02:00
firmware firmware: fix google/gsmi.c build warning 2011-08-08 13:53:49 -07:00
gpio drivers/gpio/gpio-generic.c: fix build errors 2011-09-14 18:09:38 -07:00
gpu drm/radeon/kms: fix channel_remap setup (v2) 2011-10-04 17:24:14 +01:00
hid Merge branch 'for-linus' of git://github.com/dtor/input 2011-09-16 14:09:19 -07:00
hwmon hwmon: (coretemp) Avoid leaving around dangling pointer 2011-09-28 08:19:21 -07:00
hwspinlock
i2c i2c-tegra: fix possible race condition after tx 2011-09-07 00:13:40 +01:00
ide ide-disk: Fix request requeuing 2011-10-03 14:28:18 -04:00
idle
ieee802154
infiniband net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
input Merge branch 'for-linus' of git://github.com/dtor/input 2011-10-05 09:22:38 -07:00
iommu x86, iommu: Mark DMAR IRQ as non-threaded 2011-09-13 23:44:53 +02:00
isdn
leds drivers/leds/ledtrig-timer.c: fix broken sysfs delay handling 2011-09-14 18:09:38 -07:00
lguest
macintosh
mca
md Merge branch 'for-linus' of http://people.redhat.com/agk/git/linux-dm 2011-10-06 08:31:47 -07:00
media Merge branch 'master' of github.com:davem330/net 2011-10-07 13:38:43 -04:00
memstick
message
mfd mfd: Fix generic irq chip ack function name for jz4740-adc 2011-09-21 13:06:34 +02:00
misc lis3: fix regression of HP DriveGuard with 8bit chip 2011-10-03 20:51:51 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2011-09-21 13:20:21 -07:00
mtd UBI: do not link debug messages when debugging is disabled 2011-08-19 19:02:27 +03:00
net macvtap: Fix the minor device number allocation 2011-10-21 02:53:07 -04:00
nfc nfc: NFC_WILINK depends on NFC_NCI 2011-09-21 16:19:44 -04:00
nubus
of Revert "dt: add of_alias_scan and of_alias_get_id" 2011-08-04 11:26:24 +01:00
oprofile
parisc
parport
pci PCI: Disable MPS configuration by default 2011-10-04 09:52:28 -07:00
pcmcia
platform acer-wmi: support Lenovo ideapad S205 wifi switch 2011-08-05 15:21:52 -04:00
pnp
power s3c-adc-battery: Fix compilation error due to missing header (module.h) 2011-08-19 21:01:46 +04:00
pps
ps3
ptp
rapidio rapidio: fix use of non-compatible registers 2011-08-25 16:25:34 -07:00
regulator
rtc drivers/rtc/rtc-s3c.c: fix no occurrence of alarm interrupt 2011-09-14 18:09:38 -07:00
s390 Merge branch 'master' of github.com:davem330/net 2011-10-07 13:38:43 -04:00
sbus
scsi cxgbi: convert to SKB paged frag API. 2011-10-21 02:52:53 -04:00
sfi
sh Merge branch 'common/core' into sh-latest 2011-08-08 16:33:54 +09:00
sn
spi spi-topcliff-pch: Fix overrun issue 2011-10-04 10:10:50 -06:00
ssb ssb: fix DMA translation for some specific boards 2011-08-24 14:41:41 -04:00
staging net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
target iscsi-target: Fix sendpage breakage with proper padding+DataDigest iovec offsets 2011-09-16 23:47:07 +00:00
tc
telephony
thermal
tty cris: fix a build error in drivers/tty/serial/crisv10.c 2011-09-14 18:09:38 -07:00
uio
usb USB: xHCI: prevent infinite loop when processing MSE event 2011-09-19 17:15:47 -07:00
uwb
vhost
video backlight: Declare backlight_types[] const 2011-09-10 14:00:02 -07:00
virt
virtio
vlynq
w1 MAINTAINERS: Evgeniy has moved 2011-08-25 16:25:33 -07:00
watchdog Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
xen xen/pciback: Add flag indicating device has been assigned by Xen 2011-09-27 00:48:34 -04:00
zorro zorro: Defer device_register() until all devices have been identified 2011-09-22 12:59:35 -07:00
Kconfig
Makefile