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db3c6139e6
linux/drivers
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Daniel Borkmann db3c6139e6 bpf, vxlan, geneve, gre: fix usage of dst_cache on xmit 
The assumptions from commit 0c1d70af92 ("net: use dst_cache for vxlan
device"), 468dfffcd7 ("geneve: add dst caching support") and 3c1cb4d260
("net/ipv4: add dst cache support for gre lwtunnels") on dst_cache usage
when ip_tunnel_info is used is unfortunately not always valid as assumed.

While it seems correct for ip_tunnel_info front-ends such as OVS, eBPF
however can fill in ip_tunnel_info for consumers like vxlan, geneve or gre
with different remote dsts, tos, etc, therefore they cannot be assumed as
packet independent.

Right now vxlan, geneve, gre would cache the dst for eBPF and every packet
would reuse the same entry that was first created on the initial route
lookup. eBPF doesn't store/cache the ip_tunnel_info, so each skb may have
a different one.

Fix it by adding a flag that checks the ip_tunnel_info. Also the !tos test
in vxlan needs to be handeled differently in this context as it is currently
inferred from ip_tunnel_info as well if present. ip_tunnel_dst_cache_usable()
helper is added for the three tunnel cases, which checks if we can use dst
cache.

Fixes: 0c1d70af92 ("net: use dst_cache for vxlan device")
Fixes: 468dfffcd7 ("geneve: add dst caching support")
Fixes: 3c1cb4d260 ("net/ipv4: add dst cache support for gre lwtunnels")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-08 13:58:47 -05:00
..
accessibility
acpi nfit: Continue init even if ARS commands are unimplemented 2016-03-04 16:46:13 -08:00
amba
android drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE 2016-02-20 15:43:56 -08:00
ata ata: ahci: don't mark HotPlugCapable Ports as external/removable 2016-02-29 16:17:57 -05:00
atm atm: solos-pci: use to_pci_dev() 2015-12-29 15:32:24 -05:00
auxdisplay
base Merge branch 'component' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2016-02-14 10:40:21 -08:00
bcma Major changes: 2016-02-16 20:38:29 -05:00
block null_blk: oops when initializing without lightnvm 2016-02-11 08:56:09 -07:00
bluetooth Bluetooth: hci_uart: Add diag and address support for Intel/AG6xx 2016-02-29 19:25:22 +02:00
bus vexpress fixes for v4.5 2016-02-01 12:27:18 -08:00
cdrom cdrom: don't open-code memdup_user() 2016-01-06 08:25:24 -05:00
char drivers: char: random: add get_random_long() 2016-02-27 10:28:52 -08:00
clk clk: ti: omap3+: dpll: use non-locking version of clk_get_rate 2016-02-22 14:03:02 -08:00
clocksource Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-01-31 15:49:06 -08:00
connector connector: bump skb->users before callback invocation 2016-01-04 21:46:45 -05:00
cpufreq cpufreq: mediatek: allow building as a module 2016-03-01 02:43:05 +01:00
cpuidle Merge branches 'pm-cpuidle', 'pm-cpufreq', 'pm-domains' and 'pm-sleep' 2016-01-29 21:45:17 +01:00
crypto crypto: marvell/cesa - fix test in mv_cesa_dev_dma_init() 2016-02-06 15:23:56 +08:00
dca
devfreq PM / devfreq: tegra: Set freq in rate callback 2016-02-23 14:27:42 +09:00
dio
dma dmaengine: pxa_dma: fix cyclic transfers 2016-03-03 21:06:45 +05:30
dma-buf
edac EDAC, i5100: Use to_delayed_work() 2016-01-01 18:31:34 +01:00
eisa
extcon extcon: add Maxim MAX3355 driver 2015-12-21 11:44:00 +09:00
firewire
firmware efi: Add pstore variables to the deletion whitelist 2016-02-16 12:48:18 +00:00
fmc
fpga
gpio gpio: rcar: Add Runtime PM handling for interrupts 2016-02-25 15:46:27 +01:00
gpu Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
hid asm-generic changes for 4.5 2016-01-20 17:30:20 -08:00
hsi HSI: omap_ssi_port: fix handling of_get_named_gpio result 2016-01-07 16:07:54 +01:00
hv char/misc patches for 4.5-rc1 2016-01-13 10:23:36 -08:00
hwmon hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal hook 2016-02-19 17:14:25 -08:00
hwspinlock drivers/hwspinlock: fix race between radix tree insertion and lookup 2016-02-03 08:28:43 -08:00
hwtracing coresight: Fix a typo in Kconfig 2015-12-21 13:31:31 -08:00
i2c i2c: brcmstb: allocate correct amount of memory for regmap 2016-03-01 19:16:45 +01:00
ide drivers/ide: make ide-scan-pci.c driver explicitly non-modular 2016-01-18 14:12:33 -05:00
idle
iio Second set of IIO fixes for the 4.5 cycle. These ones are mostly 2016-02-01 13:08:26 -08:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-02-10 12:21:57 -08:00
iommu iommu/vt-d: Use BUS_NOTIFY_REMOVED_DEVICE in hotplug path 2016-02-29 23:55:16 +01:00
ipack
irqchip irqchip/gicv3-its: Avoid cache flush beyond ITS_BASERn memory size 2016-02-17 17:39:05 +00:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
leds GPIO bulk updates for the v4.5 kernel cycle: 2016-01-17 12:32:01 -08:00
lguest lguest: Map switcher text R/O 2016-01-12 12:17:28 +01:00
lightnvm lightnvm: allow to force mm initialization 2016-02-04 09:19:45 -07:00
macintosh
mailbox mailbox: Fix dependencies for !HAS_IOMEM archs 2016-02-02 16:47:14 +05:30
mcb
md dm: fix dm_rq_target_io leak on faults with .request_fn DM w/ blk-mq paths 2016-02-21 20:27:50 -05:00
media [media] adv7604: fix tx 5v detect regression 2016-02-16 09:38:51 -02:00
memory ARM: SoC driver updates for v4.5 2016-01-20 18:42:30 -08:00
memstick memstick: use sector_div instead of do_div 2016-01-20 17:09:18 -08:00
message
mfd thermal: allow u8500-thermal driver to be a module 2016-02-09 14:18:23 -08:00
misc powerpc fixes for 4.5 #4 2016-03-06 11:08:06 -08:00
mmc mmc: omap_hsmmc: Fix PM regression with deferred probe for pm_runtime_reinit 2016-02-15 14:10:48 +01:00
mtd ubi: Fix out of bounds write in volume update code 2016-03-05 21:56:23 +01:00
net bpf, vxlan, geneve, gre: fix usage of dst_cache on xmit 2016-03-08 13:58:47 -05:00
nfc nfc: pn544: Remove i2c client gpio irq configuration 2015-12-29 19:06:23 +01:00
ntb NTB: Fix macro parameter conflict with field name 2016-01-21 19:53:10 -05:00
nubus
nvdimm nvdimm: use 'u64' for pfn flags 2016-02-23 17:17:20 -08:00
nvme nvme: fix max_segments integer truncation 2016-03-03 14:43:10 -07:00
nvmem nvmem: qfprom: Specify LE device endianness 2016-02-07 23:09:13 -08:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
oprofile wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
parisc parisc: convert to dma_map_ops 2016-01-20 17:09:18 -08:00
parport parport: avoid assignment in if 2016-01-03 16:32:59 -08:00
pci PCI updates for v4.5: 2016-03-03 12:54:39 -08:00
pcmcia
perf
phy phy: twl4030-usb: Fix unbalanced pm_runtime_enable on module reload 2016-02-10 11:46:01 +05:30
pinctrl pinctrl: samsung: fix SMP race condition 2016-02-15 20:45:50 +01:00
platform intel_scu_ipcutil: underflow in scu_reg_access() 2016-01-30 09:40:35 -08:00
pnp PNP: Add Haswell-ULT to Intel MCH size workaround 2016-02-03 01:00:29 +01:00
power power: bq27xxx_battery: Restore device name 2016-02-21 20:49:34 +01:00
powercap Merge branch 'powercap' 2016-01-12 01:12:40 +01:00
pps
ps3
ptp ptp: ixp46x: use helpers for converting ns to timespec 2016-01-29 12:38:59 -08:00
pwm pwm: Mark all devices as "might sleep" 2016-01-21 15:04:59 +01:00
rapidio rapidio: use kobj_to_dev() 2016-01-20 17:09:18 -08:00
ras
regulator regulator: Update for v4.5 2016-01-15 12:14:47 -08:00
remoteproc virtio: make find_vqs() checkpatch.pl-friendly 2016-01-12 20:47:06 +02:00
reset
rpmsg virtio: make find_vqs() checkpatch.pl-friendly 2016-01-12 20:47:06 +02:00
rtc RTC for 4.5 2016-01-18 12:10:45 -08:00
s390 s390/dasd: fix performance drop 2016-02-17 09:24:07 +01:00
sbus convert a bunch of open-coded instances of memdup_user_nul() 2016-01-04 10:26:58 -05:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
sfi
sh drivers: sh: Restore legacy clock domain on SuperH platforms 2016-02-25 09:05:19 +09:00
sn
soc ARM: SoC support for Tegra platforms for v4.5 2016-01-22 17:30:52 -08:00
spi Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/bcm2835aux', 'spi/fix/fsl-espi', 'spi/fix/imx', 'spi/fix/loopback' and 'spi/fix/omap2-mcspi' into spi-linus 2016-02-12 23:04:41 +00:00
spmi
ssb ssb: host_soc depends on sprom 2016-02-26 12:47:32 +02:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
target target/transport: add flag to indicate CPU Affinity is observed 2016-02-10 23:08:55 -08:00
tc
thermal thermal: cpu_cooling: fix out of bounds access in time_in_idle 2016-02-11 07:13:29 -08:00
thunderbolt
tty Revert "8250: uniphier: allow modular build with 8250 console" 2016-02-07 18:22:54 -08:00
uio
usb USB-serial fixes for v4.5-rc7 2016-03-03 12:37:21 -08:00
uwb
vfio vfio: fix ioctl error handling 2016-02-28 07:38:52 -07:00
vhost vhost: fix error path in vhost_init_used() 2016-03-02 17:01:49 +02:00
video fbcon: set a default value to blink interval 2016-02-26 13:19:55 +02:00
virt
virtio virtio-pci: read the right virtio_pci_notify_cap field 2016-03-02 17:01:49 +02:00
vlynq
vme
w1
watchdog Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2016-03-01 08:57:34 -08:00
xen Xen bug fixes for 4.5-rc5 2016-02-22 13:57:01 -08:00
zorro
Kconfig
Makefile