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Daniel Borkmann 9aa1206e8f bpf: Add redirect_peer helper 
Add an efficient ingress to ingress netns switch that can be used out of tc BPF
programs in order to redirect traffic from host ns ingress into a container
veth device ingress without having to go via CPU backlog queue [0]. For local
containers this can also be utilized and path via CPU backlog queue only needs
to be taken once, not twice. On a high level this borrows from ipvlan which does
similar switch in __netif_receive_skb_core() and then iterates via another_round.
This helps to reduce latency for mentioned use cases.

Pod to remote pod with redirect(), TCP_RR [1]:

  # percpu_netperf 10.217.1.33
          RT_LATENCY:         122.450         (per CPU:         122.666         122.401         122.333         122.401 )
        MEAN_LATENCY:         121.210         (per CPU:         121.100         121.260         121.320         121.160 )
      STDDEV_LATENCY:         120.040         (per CPU:         119.420         119.910         125.460         115.370 )
         MIN_LATENCY:          46.500         (per CPU:          47.000          47.000          47.000          45.000 )
         P50_LATENCY:         118.500         (per CPU:         118.000         119.000         118.000         119.000 )
         P90_LATENCY:         127.500         (per CPU:         127.000         128.000         127.000         128.000 )
         P99_LATENCY:         130.750         (per CPU:         131.000         131.000         129.000         132.000 )

    TRANSACTION_RATE:       32666.400         (per CPU:        8152.200        8169.842        8174.439        8169.897 )

Pod to remote pod with redirect_peer(), TCP_RR:

  # percpu_netperf 10.217.1.33
          RT_LATENCY:          44.449         (per CPU:          43.767          43.127          45.279          45.622 )
        MEAN_LATENCY:          45.065         (per CPU:          44.030          45.530          45.190          45.510 )
      STDDEV_LATENCY:          84.823         (per CPU:          66.770          97.290          84.380          90.850 )
         MIN_LATENCY:          33.500         (per CPU:          33.000          33.000          34.000          34.000 )
         P50_LATENCY:          43.250         (per CPU:          43.000          43.000          43.000          44.000 )
         P90_LATENCY:          46.750         (per CPU:          46.000          47.000          47.000          47.000 )
         P99_LATENCY:          52.750         (per CPU:          51.000          54.000          53.000          53.000 )

    TRANSACTION_RATE:       90039.500         (per CPU:       22848.186       23187.089       22085.077       21919.130 )

  [0] https://linuxplumbersconf.org/event/7/contributions/674/attachments/568/1002/plumbers_2020_cilium_load_balancer.pdf
  [1] https://github.com/borkmann/netperf_scripts/blob/master/percpu_netperf

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201010234006.7075-3-daniel@iogearbox.net
2020-10-11 10:21:04 -07:00
..
accessibility
Char/Misc driver fixes for 5.9-rc3
2020-08-26 10:50:50 -07:00
acpi
ACPI: processor: Take over RCU-idle for C3-BM idle
2020-09-16 19:36:26 +02:00
amba
…
android
drivers: android: Fix the SPDX comment style
2020-07-29 17:05:44 +02:00
ata
libata-5.9-2020-09-04
2020-09-04 13:19:19 -07:00
atm
atm: atmtcp: Constify atmtcp_v_dev_ops
2020-09-28 16:03:30 -07:00
auxdisplay
A trivial patch for auxdisplay:
2020-09-05 14:22:46 -07:00
base
Driver core fixes for 5.9-rc5
2020-09-13 09:02:59 -07:00
bcma
bcma: gpio: Use irqchip template
2020-08-02 18:26:51 +03:00
block
rbd: require global CAP_SYS_ADMIN for mapping and unmapping
2020-09-07 13:14:30 +02:00
bluetooth
Bluetooth: btusb: Add Qualcomm Bluetooth SoC WCN6855 support
2020-09-27 23:44:50 +02:00
bus
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
cdrom
…
char
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-08-30 15:53:44 -07:00
clk
clk: qcom: lpass: Correct goto target in lpass_core_sc7180_probe()
2020-09-10 13:42:35 -07:00
clocksource
RISC-V Fixes for 5.9-rc6 (or shortly after)
2020-09-20 10:51:11 -07:00
connector
connector: simplify the return expression of cn_add_callback()
2020-09-21 13:48:29 -07:00
counter
counter: microchip-tcb-capture: check the correct variable
2020-08-22 11:38:42 +01:00
cpufreq
cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
2020-09-01 21:15:00 +02:00
cpuidle
powerpc fixes for 5.9 #5
2020-09-18 11:48:25 -07:00
crypto
crypto/chcr: move nic TLS functionality to drivers/net
2020-09-11 17:26:39 -07:00
dax
dax: Fix stack overflow when mounting fsdax pmem device
2020-09-20 08:57:36 -07:00
dca
…
devfreq
PM / devfreq: Fix the wrong end with semicolon
2020-07-30 17:22:58 +09:00
dio
…
dma
dmaengine fixes for v5.9-rc4
2020-09-04 12:12:39 -07:00
dma-buf
dma-buf: fence-chain: Document missing dma_fence_chain_init() parameter in kerneldoc
2020-09-03 17:47:02 +05:30
edac
EDAC/ghes: Check whether the driver is on the safe list correctly
2020-09-15 09:42:15 +02:00
eisa
…
extcon
…
firewire
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
firmware
Single EFI fix for v5.9-rc:
2020-09-20 15:18:11 -07:00
fpga
Linux 5.8-rc7
2020-07-27 11:49:37 +02:00
fsi
…
gnss
…
gpio
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
gpu
Mediatek DRM Fixes for Linux 5.9
2020-09-18 08:52:06 +10:00
greybus
greybus: Use fallthrough pseudo-keyword
2020-07-29 16:58:08 +02:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
2020-09-02 12:55:46 -07:00
hsi
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
hv
hyperv-fixes for 5.9-rc6
2020-09-15 16:20:43 -07:00
hwmon
hwmon fixes for v5.9-rc3
2020-08-29 12:37:00 -07:00
hwspinlock
…
hwtracing
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
i2c
i2c: mxs: use MXS_DMA_CTRL_WAIT4END instead of DMA_CTRL_ACK
2020-09-18 23:11:44 +02:00
i3c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
ide
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
idle
cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic
2020-08-26 12:41:53 +02:00
iio
Staging / IIO driver fixes for 5.9-rc5
2020-09-13 09:15:20 -07:00
infiniband
RDMA second 5.9-rc pull request
2020-09-11 10:02:36 -07:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2020-09-20 10:40:43 -07:00
interconnect
interconnect: qcom: Fix small BW votes being truncated to zero
2020-09-04 00:07:12 +03:00
iommu
iommu/amd: Restore IRTE.RemapEn bit for amd_iommu_activate_guest_mode
2020-09-18 11:17:19 +02:00
ipack
…
irqchip
A set of fixes for interrupt chip drivers:
2020-08-30 11:56:54 -07:00
isdn
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
leds
LEDs changes for 5.9-rc1.
2020-08-05 19:24:27 -07:00
lightnvm
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
macintosh
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
mailbox
iomap: constify ioreadX() iomem argument (as in generic implementation)
2020-08-14 19:56:57 -07:00
mcb
…
md
dm: Call proper helper to determine dax support
2020-09-20 08:55:09 -07:00
media
media fixes for v5.9-rc4
2020-09-03 08:22:16 -07:00
memory
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
memstick
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
message
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
mfd
- Bug Fixes
2020-08-28 10:15:33 -07:00
misc
Char / Misc driver fixes for 5.9-rc5
2020-09-13 08:52:21 -07:00
mmc
mmc: sdio: Use mmc_pre_req() / mmc_post_req()
2020-09-07 08:57:44 +02:00
most
drivers: most: add USB adapter driver
2020-07-31 14:38:12 +02:00
mtd
Revert "mtd: spi-nor: Add capability to disable flash quad mode"
2020-09-14 20:58:27 +05:30
mux
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
net
bpf: Add redirect_peer helper
2020-10-11 10:21:04 -07:00
nfc
nfc: s3fwrn5: Constify s3fwrn5_fw_info when not modified
2020-09-10 15:22:16 -07:00
ntb
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nubus
…
nvdimm
libnvdimm: KASAN: global-out-of-bounds Read in internal_create_group
2020-08-17 14:47:38 -06:00
nvme
block-5.9-2020-09-22
2020-09-22 14:31:38 -07:00
nvmem
nvmem: qcom-spmi-sdam: Enable multiple devices
2020-07-29 17:12:09 +02:00
of
of: add of_mdio_find_device() api
2020-09-24 19:49:36 -07:00
opp
Merge branch 'opp/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
2020-09-01 19:44:20 +02:00
oprofile
…
parisc
Merge branch 'parisc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
2020-08-12 12:41:15 -07:00
parport
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pci
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pcmcia
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
perf
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
phy
phy: fixes for 5.9
2020-09-04 12:41:55 +02:00
pinctrl
This is the bulk of the pin control changes for the v5.9
2020-08-09 12:52:28 -07:00
platform
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pnp
…
power
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
powercap
powercap: RAPL: Add support for Lakefield
2020-09-16 14:16:04 +02:00
pps
…
ps3
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
ptp
ptp_qoriq: support FIPER3
2020-09-18 17:49:20 -07:00
pwm
pwm: Changes for v5.9-rc1
2020-08-14 16:00:09 -07:00
rapidio
rapidio: Replace 'select' DMAENGINES 'with depends on'
2020-09-05 19:52:54 +03:00
ras
…
regulator
regulator: Fixes for v5.9
2020-09-11 11:25:55 -07:00
remoteproc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
reset
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rpmsg
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rtc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
s390
net/smc: introduce CHID callback for ISM devices
2020-09-28 15:19:03 -07:00
sbus
…
scsi
SCSI fixes on 20200915
2020-09-15 16:30:20 -07:00
sfi
…
sh
iomap: constify ioreadX() iomem argument (as in generic implementation)
2020-08-14 19:56:57 -07:00
siox
…
slimbus
…
soc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
soundwire
soundwire: fix double free of dangling pointer
2020-09-03 14:10:19 +05:30
spi
spi: Fixes for v5.9
2020-09-11 11:35:55 -07:00
spmi
…
ssb
ssb: Remove meaningless jump label to simplify the code
2020-09-21 16:01:35 +03:00
staging
Staging / IIO driver fixes for 5.9-rc5
2020-09-13 09:15:20 -07:00
target
SCSI fixes on 20200908
2020-09-08 11:42:58 -07:00
tc
…
tee
…
thermal
- Fix bogus thermal shutdowns for omap4430 where bogus values
2020-09-04 12:49:03 -07:00
thunderbolt
thunderbolt: Fix for v5.9-rc6
2020-09-15 13:52:14 +02:00
tty
serial: 8250_pci: Add Realtek 816a and 816b
2020-09-16 13:23:33 +02:00
uio
…
usb
usblp: fix race between disconnect() and read()
2020-09-17 18:45:30 +02:00
vdpa
vdpa/mlx5: Avoid warnings about shifts on 32-bit platforms
2020-08-26 08:13:59 -04:00
vfio
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
vhost
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-09-03 18:50:48 -07:00
video
TTY/Serial/fbcon fixes for 5.9-rc6
2020-09-20 10:46:26 -07:00
virt
…
virtio
virtio: pci: constify ioreadX() iomem argument (as in generic implementation)
2020-08-14 19:56:57 -07:00
visorbus
…
vlynq
…
vme
…
w1
…
watchdog
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
xen
xen: branch for v5.9-rc4
2020-09-06 09:59:27 -07:00
zorro
…
Kconfig
…
Makefile
…