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c3852ef7f2
linux/drivers
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Ido Schimmel c3852ef7f2 ipv4: fib: Replay events when registering FIB notifier 
Commit b90eb75494 ("fib: introduce FIB notification infrastructure")
introduced a new notification chain to notify listeners (f.e., switchdev
drivers) about addition and deletion of routes.

However, upon registration to the chain the FIB tables can already be
populated, which means potential listeners will have an incomplete view
of the tables.

Solve that by dumping the FIB tables and replaying the events to the
passed notification block. The dump itself is done using RCU in order
not to starve consumers that need RTNL to make progress.

The integrity of the dump is ensured by reading the FIB change sequence
counter before and after the dump under RTNL. This allows us to avoid
the problematic situation in which the dumping process sends a ENTRY_ADD
notification following ENTRY_DEL generated by another process holding
RTNL.

Callers of the registration function may pass a callback that is
executed in case the dump was inconsistent with current FIB tables.

The number of retries until a consistent dump is achieved is set to a
fixed number to prevent callers from looping for long periods of time.
In case current limit proves to be problematic in the future, it can be
easily converted to be configurable using a sysctl.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-03 19:29:35 -05:00
..
accessibility
acpi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-26 23:42:21 -05:00
amba
android ANDROID: binder: Clear binder and cookie when setting handle in flat binder struct 2016-10-24 19:37:48 +02:00
ata ahci: always fall back to single-MSI mode 2016-11-21 11:06:57 -05:00
atm solos-pci: use permission-specific DEVICE_ATTR variants 2016-10-31 15:32:12 -04:00
auxdisplay auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displays 2016-10-06 17:03:41 +02:00
base devres: add devm_alloc_percpu() 2016-11-15 22:34:25 -05:00
bcma bcma: add Dell Inspiron 3148 2016-11-29 17:35:14 +02:00
block zram: fix unbalanced idr management at hot removal 2016-11-30 16:32:52 -08:00
bluetooth Bluetooth: btwilink: Fix probe return value 2016-10-20 10:14:49 +02:00
bus bus: qcom-ebi2: depend on ARCH_QCOM or COMPILE_TEST 2016-10-17 13:46:09 -07:00
cdrom
char Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-22 13:27:16 -05:00
clk Two small fixes for MIPI PLLs on sunxi devices and a build fix 2016-11-30 15:15:49 -08:00
clocksource Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init" 2016-10-20 21:58:58 +02:00
connector
cpufreq Merge branches 'pm-cpufreq-fixes' and 'pm-sleep-fixes' 2016-10-29 01:29:17 +02:00
cpuidle Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-22 13:27:16 -05:00
dax device-dax: fail all private mapping attempts 2016-11-16 09:00:38 -08:00
dca
devfreq PM / devfreq: Skip status update on uninitialized previous_freq 2016-10-11 00:01:20 +02:00
dio
dma dmaengine: cppi41: More PM runtime fixes 2016-11-17 16:09:23 +05:30
dma-buf Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux 2016-10-11 18:12:22 -07:00
edac * Altera Arria10 enablement of NAND, DMA, USB, QSPI and SD-MMC FIFO 2016-10-04 12:06:26 -07:00
eisa
extcon extcon: qcom-spmi-misc: Sync the extcon state on interrupt 2016-10-26 16:04:29 +09:00
firewire Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-15 10:54:36 -05:00
firmware efi/arm: Fix absolute relocation detection for older toolchains 2016-10-19 14:49:44 +02:00
fmc
fpga
gpio gpio: Remove GPIO_DEVRES option 2016-11-16 20:46:32 +01:00
gpu Merge branch 'mediatek-drm-fixes-2016-11-24' of https://github.com/ckhu-mediatek/linux.git-tags into drm-fixes 2016-11-25 14:21:26 +10:00
hid HID: hid-sensor-hub: clear memory to avoid random data 2016-11-23 17:54:58 +01:00
hsi net: use core MTU range checking in misc drivers 2016-10-20 14:51:10 -04:00
hv vmbus: make sysfs names consistent with PCI 2016-11-01 09:07:13 -06:00
hwmon hwmon: (core) fix resource leak on devm_kcalloc failure 2016-10-24 06:05:13 -07:00
hwspinlock
hwtracing
i2c Revert "i2c: octeon: thunderx: Limit register access retries" 2016-11-29 20:04:21 +01:00
ide
idle nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
iio iio: maxim_thermocouple: detect invalid storage size in read() 2016-11-13 10:08:32 +01:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-22 13:27:16 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-12-01 10:29:41 -08:00
iommu Merge git://git.infradead.org/intel-iommu 2016-11-27 08:24:46 -08:00
ipack ipack: print a hex number after a 0x prefix 2016-10-27 18:43:43 -07:00
irqchip GIC updates for Linux 4.9-rc2 2016-10-21 21:40:29 +02:00
isdn net: deprecate eth_change_mtu, remove usage 2016-10-13 09:36:57 -04:00
leds leds: triggers: Check return value of kobject_uevent_env() 2016-09-20 10:22:10 +02:00
lguest
lightnvm Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-block 2016-10-07 14:42:05 -07:00
macintosh powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mailbox mailbox: PCC: Fix lockdep warning when request PCC channel 2016-11-14 22:07:38 +01:00
mcb mcb: Add a dma_device to mcb_device 2016-09-27 12:33:47 +02:00
md Merge tag 'md/4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2016-11-05 11:34:07 -07:00
media Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-26 23:42:21 -05:00
memory ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
memstick memstick: rtsx_usb_ms: Manage runtime PM when accessing the device 2016-10-17 15:43:05 +02:00
message net: use core MTU range checking in misc drivers 2016-10-20 14:51:10 -04:00
mfd mfd: wm8994-core: Don't use managed regulator bulk get API 2016-11-25 11:10:55 +00:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-15 10:54:36 -05:00
mmc mmc: dw_mmc: fix the error handling for dma operation 2016-11-21 11:08:28 +01:00
mtd MTD updates for 4.9-rc4: 2016-11-05 10:52:29 -07:00
net ipv4: fib: Replay events when registering FIB notifier 2016-12-03 19:29:35 -05:00
nfc mei: bus: fix received data size check in NFC fixup 2016-10-31 10:25:22 -06:00
ntb ntb_perf: potential info leak in debugfs 2016-11-13 16:48:30 -05:00
nubus
nvdimm nvdimm: make CONFIG_NVDIMM_DAX 'bool' 2016-10-27 16:16:21 -07:00
nvme nvme/pci: Don't free queues on error 2016-11-16 12:39:57 -07:00
nvmem ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
of of_mdio: add helper to deregister fixed-link PHYs 2016-11-29 23:17:02 -05:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
parisc
parport
pci pci-v4.9-fixes-4 2016-12-01 16:44:42 -08:00
pcmcia pcmcia: fix return value of soc_pcmcia_regulator_set 2016-11-11 08:45:08 -08:00
perf perf: xgene: Remove bogus IS_ERR() check 2016-10-17 15:50:07 +01:00
phy phy: twl4030-usb: Fix for musb session bit based PM 2016-11-17 16:25:40 +01:00
pinctrl pinctrl-aspeed-g5: Never set SCU90[6] 2016-11-07 10:31:33 +01:00
platform ACPI fix for v4.9-rc5 2016-11-11 17:02:01 -08:00
pnp
power power supply and reset changes for the v4.9 series 2016-10-06 18:21:15 -07:00
powercap
pps pps: kc: fix non-tickless system config dependency 2016-10-11 15:06:32 -07:00
ps3 powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
ptp ptp: Introduce a high resolution frequency adjustment method. 2016-11-09 21:19:53 -05:00
pwm pwm: Fix device reference leak 2016-11-29 16:43:24 +01:00
rapidio mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
ras
regulator regulator: core: silence warning: "VDD1: ramp_delay not set" 2016-10-28 18:22:40 +01:00
remoteproc rpmsg updates for v4.9 2016-10-06 17:03:49 -07:00
reset reset: uniphier: rename MIO reset to SD reset for Pro5, PXs2, LD20 SoCs 2016-10-22 18:31:42 +09:00
rpmsg
rtc rtc: omap: prevent disabling of clock/module during suspend 2016-11-04 23:11:39 +01:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-03 12:29:53 -05:00
sfi
sh
sn
soc powerpc updates for 4.9 #2 2016-10-14 11:07:42 -07:00
spi Merge remote-tracking branches 'spi/fix/dt', 'spi/fix/fsl-dspi' and 'spi/fix/fsl-espi' into spi-linus 2016-10-29 12:51:55 -06:00
spmi spmi: pmic-arb: Return an error code if sanity check fails 2016-09-27 12:43:34 +02:00
ssb ssb: Fix error routine when fallback SPROM fails 2016-11-17 08:49:04 +02:00
staging staging: wilc1000: use reset to set mac header 2016-12-03 15:49:16 -05:00
target cxgb4: Allocate Tx queues dynamically 2016-11-18 14:04:29 -05:00
tc
thermal Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-26 23:42:21 -05:00
thunderbolt
tty Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-11-26 23:42:21 -05:00
uwb uwb: fix device reference leaks 2016-11-01 09:04:04 -06:00
vfio vfio/pci: Fix integer overflows, bitmask check 2016-10-26 13:49:29 -06:00
vhost
video video: ARM CLCD: fix Vexpress regression 2016-11-03 12:20:14 +02:00
virt mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
virtio virtio_ring: mark vring_dma_dev inline 2016-10-31 00:40:08 +02:00
vlynq
vme vme: vme_get_size potentially returning incorrect value on failure 2016-10-28 08:25:18 -04:00
w1
watchdog Merge branches 'acpi-sleep-fixes' and 'acpi-wdat-fixes' 2016-11-25 22:24:07 +01:00
xen xen: fixes for 4.9-rc2 2016-10-24 19:52:24 -07:00
zorro
Kconfig
Makefile A small bug fix and a new driver for acting as an IPMI device. 2016-10-23 15:56:23 -07:00