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David Ahern 37923ed6b8 netdevsim: Add simple FIB resource controller via devlink 
Add devlink support to netdevsim and use it to implement a simple,
profile based resource controller. Only one controller is needed
per namespace, so the first netdevsim netdevice in a namespace
registers with devlink. If that device is deleted, the resource
settings are deleted.

The resource controller allows a user to limit the number of IPv4 and
IPv6 FIB entries and FIB rules. The resource paths are:
    /IPv4
    /IPv4/fib
    /IPv4/fib-rules
    /IPv6
    /IPv6/fib
    /IPv6/fib-rules

The IPv4 and IPv6 top level resources are unlimited in size and can not
be changed. From there, the number of FIB entries and FIB rule entries
are unlimited by default. A user can specify a limit for the fib and
fib-rules resources:

    $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib size 96
    $ devlink resource set netdevsim/netdevsim0 path /IPv4/fib-rules size 16
    $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib size 64
    $ devlink resource set netdevsim/netdevsim0 path /IPv6/fib-rules size 16
    $ devlink dev reload netdevsim/netdevsim0

such that the number of rules or routes is limited (96 ipv4 routes in the
example above):
    $ for n in $(seq 1 32); do ip ro add 10.99.$n.0/24 dev eth1; done
    Error: netdevsim: Exceeded number of supported fib entries.

    $ devlink resource show netdevsim/netdevsim0
    netdevsim/netdevsim0:
      name IPv4 size unlimited unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables non
        resources:
          name fib size 96 occ 96 unit entry size_min 0 size_max unlimited size_gran 1 dpipe_tables
    ...

With this template in place for resource management, it is fairly trivial
to extend and shows one way to implement a simple counter based resource
controller typical of network profiles.

Currently, devlink only supports initial namespace. Code is in place to
adapt netdevsim to a per namespace controller once the network namespace
issues are resolved.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-29 14:10:31 -04:00
..
accessibility
acpi Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 2018-03-22 18:37:49 -07:00
amba
android ANDROID: binder: synchronize_rcu() when using POLLFREE. 2018-02-16 11:16:38 +01:00
ata libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version 2018-03-19 08:36:38 -07:00
atm atm: idt77252: remove redundant bit-wise or'ing of zero 2018-02-23 12:42:26 -05:00
auxdisplay auxdisplay: img-ascii-lcd: Silence 2 uninitialized warnings 2018-03-13 18:16:38 +01:00
base ACPI updates for v4.16-rc2 2018-02-15 14:50:32 -08:00
bcma bcma: Prevent build of PCI host features in module 2018-03-13 18:47:47 +02:00
block loop: Fix lost writes caused by missing flag 2018-03-09 08:36:36 -07:00
bluetooth wireless-drivers-next patches for 4.17 2018-03-25 21:27:38 -04:00
bus bus: ti-sysc: Fix checking of no-reset-on-init quirk 2018-02-15 09:18:55 -08:00
cdrom
char tpm: fix potential buffer overruns caused by bit glitches on the bus 2018-02-26 15:43:46 -08:00
clk clk: bcm2835: Protect sections updating shared registers 2018-03-19 09:27:37 -07:00
clocksource clocksource/atmel-st: Add 'depends on HAS_IOMEM' to fix unmet dependency 2018-03-09 11:11:58 +01:00
connector
cpufreq Merge branch 'cpufreq-scpi' 2018-03-02 10:44:44 +01:00
cpuidle powerpc updates for 4.16 2018-02-02 10:01:04 -08:00
crypto s390: 2018-02-26 09:28:35 -08:00
dax dax: ->direct_access does not sleep anymore 2018-02-26 12:32:29 -08:00
dca
devfreq PM / devfreq: Fix potential NULL pointer dereference in governor_store 2018-01-02 09:36:54 +09:00
dio
dma dmaengine: mv_xor_v2: Fix clock resource by adding a register clock 2018-03-11 20:33:27 +05:30
dma-buf vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
edac EDAC, sb_edac: Fix out of bound writes during DIMM configuration on KNL 2018-02-23 12:05:37 +01:00
eisa EISA: Delete error message for a failed memory allocation in eisa_probe() 2018-01-23 09:04:10 +01:00
extcon extcon: int3496: process id-pin first so that we start with the right status 2018-02-14 06:37:33 +09:00
firewire vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
firmware Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-18 11:56:53 -07:00
fmc
fpga
fsi
gpio gpio: rcar: Use wakeup_path i.s.o. explicit clock handling 2018-03-05 09:01:21 +01:00
gpu drm/ast: Fixed 1280x800 Display Issue 2018-03-23 09:50:54 +10:00
hid usb: ldusb: add PIDs for new CASSY devices supported by this driver 2018-02-15 18:44:03 +01:00
hsi vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
hv vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
hwmon Fix bad temperature display on Ryzen/Threadripper 2018-02-15 14:31:28 -08:00
hwspinlock
hwtracing Char/Misc driver patches for 4.16-rc1 2018-02-01 10:31:17 -08:00
i2c i2c: octeon: Prevent error message on bus error 2018-03-02 11:11:15 +01:00
ide genhd: Rename get_disk() to get_disk_and_module() 2018-02-26 09:48:42 -07:00
idle
iio First round of IIO fixes for the 4.16 cycle. 2018-02-20 10:03:22 +01:00
infiniband mlx5-updates-2018-03-27 (Misc updates & SQ recovery) 2018-03-29 14:01:40 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-03-07 17:37:32 -08:00
iommu treewide/trivial: Remove ';;$' typo noise 2018-02-22 10:59:33 +01:00
ipack
irqchip irqchip/irq-imx-gpcv2: Remove unused function 2018-03-11 13:27:12 +00:00
isdn net: make getname() functions return length rather than use int* parameter 2018-02-12 14:15:04 -05:00
leds vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
lightnvm lightnvm: pblk: refactor pblk_ppa_comp function 2018-01-05 08:50:12 -07:00
macintosh powerpc/macio: set a proper dma_coherent_mask 2018-02-13 08:58:53 -08:00
mailbox vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
mcb
md dm mpath: fix passing integrity data 2018-03-14 15:39:33 -04:00
media media: vb2: Makefile: place vb2-trace together with vb2-core 2018-02-26 11:39:04 -05:00
memory memory: brcmstb: dpfe: support new way of passing data from the DCPU 2018-02-23 10:56:59 -08:00
memstick
message scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo() 2018-01-30 21:32:06 -05:00
mfd vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
misc powerpc fixes for 4.16 #5 2018-03-09 09:33:48 -08:00
mmc mmc: sdhci-acpi: Fix IRQ 0 2018-03-21 11:10:20 +01:00
mtd mtd: nand: MTD_NAND_MARVELL should depend on HAS_DMA 2018-02-12 10:57:20 +01:00
mux Char/Misc driver patches for 4.16-rc1 2018-02-01 10:31:17 -08:00
net netdevsim: Add simple FIB resource controller via devlink 2018-03-29 14:10:31 -04:00
nfc
ntb NTB: ntb_perf: fix cast to restricted __le32 2018-01-28 22:17:24 -05:00
nubus nubus: Add support for the driver model 2018-01-16 16:47:29 +01:00
nvdimm libnvdimm, nfit: fix persistence domain reporting 2018-03-21 15:12:07 -07:00
nvme nvme_fc: rework sqsize handling 2018-03-08 10:39:58 -07:00
nvmem Merge 4.15-rc6 into char-misc-next 2018-01-02 14:46:35 +01:00
of device property: Constify device_get_match_data() 2018-02-12 10:41:11 +01:00
opp opp: cpu: Replace GFP_ATOMIC with GFP_KERNEL in dev_pm_opp_init_cpufreq_table 2018-02-12 15:07:46 +05:30
oprofile
parisc parisc: Show unhashed EISA EEPROM address 2018-01-02 21:01:02 +01:00
parport
pci Merge branch 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2018-03-19 14:23:30 -07:00
pcmcia Merge branch 'pcmcia' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia 2018-02-08 11:48:49 -08:00
perf arm_pmu: Use disable_irq_nosync when disabling SPI in CPU teardown hook 2018-02-28 14:59:47 +00:00
phy phy: qcom-ufs: add MODULE_LICENSE tag 2018-03-12 15:11:59 +05:30
pinctrl pinctrl: meson-axg: adjust uart_ao_b pin group naming 2018-02-12 10:47:36 +01:00
platform platform-drivers-x86 for v4.16-7 2018-03-14 13:01:14 -07:00
pnp
power power supply and reset changes for the v4.16 series 2018-01-31 12:55:31 -08:00
powercap powercap: intel_rapl: Fix trailing semicolon 2018-01-17 12:56:24 +01:00
pps vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
ps3
ptp vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
pwm
rapidio vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
ras mm/memory_failure: Remove unused trapno from memory_failure 2018-01-23 12:17:42 -06:00
regulator Merge remote-tracking branches 'regulator/fix/resume' and 'regulator/fix/stm32-vfrefbuf' into regulator-linus 2018-03-07 14:39:07 +00:00
remoteproc remoteproc updates for v4.16 2018-02-05 10:07:40 -08:00
reset
rpmsg vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
rtc vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
sbus pci-v4.16-changes 2018-02-06 09:59:40 -08:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
sfi
sh cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() 2018-02-08 10:21:39 +01:00
siox
slimbus slimbus: qcom: add HAS_IOMEM dependency 2018-01-09 17:01:15 +01:00
sn
soc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
soundwire soundwire: Fix a signedness bug 2018-01-22 16:45:26 +01:00
spi Merge remote-tracking branch 'spi/topic/xilinx' into spi-next 2018-01-26 17:57:34 +00:00
spmi
ssb ssb: use put_device() if device_register fail 2018-03-13 18:48:29 +02:00
staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
target net: make getname() functions return length rather than use int* parameter 2018-02-12 14:15:04 -05:00
tc
tee This pull request updates the previous tee-drv-dynamic-shm-for-v4.16 pull 2018-01-11 18:05:06 -08:00
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2018-02-06 15:04:58 -08:00
thunderbolt
tty serial: imx: fix bogus dev_err 2018-02-28 13:48:21 +01:00
uio vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
uwb uwb: Replace mac address parsing 2018-01-09 16:15:20 +01:00
vfio vfio: disable filesystem-dax page pinning 2018-03-02 18:00:04 -08:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
video fbdev: Fixing arbitrary kernel leak in case FBIOGETCMAP_SPARC in sbusfb_ioctl_helper(). 2018-03-07 14:00:34 +01:00
virt vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
virtio virtio_ring: fix num_free handling in error case 2018-03-01 18:53:38 +02:00
visorbus
vlynq
vme
w1 Documentation updates for 4.16. New stuff includes refcount_t 2018-01-31 19:25:25 -08:00
watchdog ACPI / watchdog: Fix off-by-one error at resource assignment 2018-03-19 23:17:07 +01:00
xen xen: fix for V4.16-rc5 2018-03-09 16:54:18 -08:00
zorro
Kconfig Char/Misc driver patches for 4.16-rc1 2018-02-01 10:31:17 -08:00
Makefile pci-v4.16-changes 2018-02-06 09:59:40 -08:00