Maxim Mikityanskiy a7bd4018d6 net/mlx5e: Add AF_XDP need_wakeup support ... This commit adds support for the new need_wakeup feature of AF_XDP. The applications can opt-in by using the XDP_USE_NEED_WAKEUP bind() flag. When this feature is enabled, some behavior changes: RX side: If the Fill Ring is empty, instead of busy-polling, set the flag to tell the application to kick the driver when it refills the Fill Ring. TX side: If there are pending completions or packets queued for transmission, set the flag to tell the application that it can skip the sendto() syscall and save time. The performance testing was performed on a machine with the following configuration: - 24 cores of Intel Xeon E5-2620 v3 @ 2.40 GHz - Mellanox ConnectX-5 Ex with 100 Gbit/s link The results with retpoline disabled: | without need_wakeup | with need_wakeup | |----------------------|----------------------| | one core | two cores | one core | two cores | -------|----------|-----------|----------|-----------| txonly | 20.1 | 33.5 | 29.0 | 34.2 | rxdrop | 0.065 | 14.1 | 12.0 | 14.1 | l2fwd | 0.032 | 7.3 | 6.6 | 7.2 | "One core" means the application and NAPI run on the same core. "Two cores" means they are pinned to different cores. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2019-08-17 23:07:32 +02:00
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accessibility	…
acpi	drivers/acpi/scan.c: document why we don't need the device_hotplug_lock	2019-08-03 07:02:01 -07:00
amba	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -07:00
android	binder: prevent transactions to context manager from its own process.	2019-07-24 11:02:28 +02:00
ata	ata: libahci: do not complain in case of deferred probe	2019-07-31 08:51:17 -06:00
atm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
auxdisplay	It's been a relatively busy cycle for docs:	2019-07-09 12:34:26 -07:00
base	Char/Misc driver fixes for 5.3-rc2	2019-07-28 10:26:10 -07:00
bcma	…
block	nbd: replace kill_bdev() with __invalidate_device() again	2019-07-31 08:51:56 -06:00
bluetooth	Bluetooth: hci_uart: check for missing tty operations	2019-07-31 13:17:33 -07:00
bus	ARM: SoC-related driver updates	2019-07-19 17:13:56 -07:00
cdrom	…
char	tpm: tpm_ibm_vtpm: Fix unallocated banks	2019-08-05 00:55:00 +03:00
clk	clk: renesas: cpg-mssr: Fix reset control race condition	2019-07-22 15:04:54 -07:00
clocksource	clocksource/drivers/npcm: Fix misuse of GENMASK macro	2019-07-10 11:05:26 +02:00
connector	connector: remove redundant input callback from cn_dev	2019-07-21 13:31:14 -07:00
counter	Staging / IIO driver update for 5.3-rc1	2019-07-11 15:36:02 -07:00
cpufreq	cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()	2019-07-23 09:49:10 +02:00
cpuidle	Merge branch 'pm-cpufreq'	2019-07-18 09:49:30 +02:00
crypto	net: Use skb accessors in network drivers	2019-07-22 20:47:56 -07:00
dax	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
dca	…
devfreq	…
dio	…
dma	dmaengine updates for v5.3-rc1	2019-07-17 09:55:43 -07:00
dma-buf	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
edac	EDAC: Fix global-out-of-bounds write when setting edac_mc_poll_msec	2019-06-27 10:24:47 -07:00
eisa	…
extcon	…
firewire	firewire: mark expected switch fall-throughs	2019-07-25 20:09:37 -05:00
firmware	Merge branch 'for-linus-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft	2019-07-26 09:43:43 -07:00
fpga	fpga-manager: altera-ps-spi: Fix build error	2019-07-24 11:29:41 +02:00
fsi	…
gnss	…
gpio	gpiolib: Preserve desc->flags when setting state	2019-07-29 00:57:39 +02:00
gpu	drm-fixes for 5.3-rc3, take 2	2019-08-02 18:53:51 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid	2019-08-06 11:47:23 -07:00
hsi	net: Use skb_frag_off accessors	2019-07-30 14:21:32 -07:00
hv	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
hwmon	hwmon: (nct6775) Fix register address and added missed tolerance for nct6106	2019-07-21 19:18:45 -07:00
hwspinlock	hwspinlock: add the 'in_atomic' API	2019-06-29 21:08:14 -07:00
hwtracing	coresight: Make the coresight_device_fwnode_match declaration's fwnode parameter const	2019-07-12 14:42:05 -07:00
i2c	i2c: s3c2410: Mark expected switch fall-through	2019-08-01 22:24:16 +02:00
i3c	* Drop support for 10-bit I2C addresses	2019-07-09 09:04:31 -07:00
ide	It's been a relatively busy cycle for docs:	2019-07-09 12:34:26 -07:00
idle	…
iio	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -07:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2019-07-20 12:22:30 -07:00
interconnect	…
iommu	virtio, vhost: bugfixes	2019-07-29 11:34:12 -07:00
ipack	TTY / Serial driver updates for 5.3-rc1	2019-07-11 15:38:21 -07:00
irqchip	irqchip fixes for 5.3	2019-08-01 20:21:00 +02:00
isdn	isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack	2019-07-31 08:54:06 -07:00
leds	LED updates for 5.3-rc1	2019-07-09 08:59:39 -07:00
lightnvm	…
macintosh	drivers/macintosh/smu.c: Mark expected switch fall-through	2019-07-31 21:44:45 +10:00
mailbox	- stm32: race fix by adding a spinlock	2019-07-14 16:36:51 -07:00
mcb	…
md	dm table: fix various whitespace issues with recent DAX code	2019-07-30 18:59:24 -04:00
media	media updates for v5.3-rc1	2019-07-22 09:01:47 -07:00
memory	Kbuild updates for v5.3 (2nd)	2019-07-20 09:34:55 -07:00
memstick	MMC core:	2019-07-11 18:11:21 -07:00
message	SCSI misc on 20190709	2019-07-11 15:14:01 -07:00
mfd	- Core Frameworks	2019-07-15 20:18:40 -07:00
misc	at24 fixes for v5.3-rc3	2019-08-01 14:05:17 +02:00
mmc	mmc: mmc_spi: Enable stable writes	2019-07-22 15:31:00 +02:00
mtd	NAND:	2019-08-04 16:37:08 -07:00
mux	…
net	net/mlx5e: Add AF_XDP need_wakeup support	2019-08-17 23:07:32 +02:00
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
ntb	New feature to add support for NTB virtual MSI interrupts, the ability	2019-07-21 09:46:59 -07:00
nubus	…
nvdimm	libnvdimm fixes v5.3-rc2	2019-07-27 08:25:51 -07:00
nvme	Revert "nvme-pci: don't create a read hctx mapping without read queues"	2019-07-23 17:47:02 +02:00
nvmem	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -07:00
of	virtio, vhost: fixes, features, performance	2019-07-17 11:26:09 -07:00
opp	pci-v5.3-changes	2019-07-15 20:44:49 -07:00
oprofile	vfs: Convert oprofilefs to use the new mount API	2019-07-04 22:01:59 -04:00
parisc	…
parport	It's been a relatively busy cycle for docs:	2019-07-09 12:34:26 -07:00
pci	New feature to add support for NTB virtual MSI interrupts, the ability	2019-07-21 09:46:59 -07:00
pcmcia	It's been a relatively busy cycle for docs:	2019-07-09 12:34:26 -07:00
perf	drivers/perf: arm_pmu: Fix failure path in PM notifier	2019-07-29 11:43:48 +01:00
phy	phy: for 5.3	2019-07-01 15:04:59 +02:00
pinctrl	This is the bulk of pin control changes for the v5.3 kernel	2019-07-13 15:02:27 -07:00
platform	platform/x86: pcengines-apuv2: use KEY_RESTART for front button	2019-07-29 18:24:59 +03:00
pnp	docs: driver-api: add a series of orphaned documents	2019-07-15 11:03:02 -03:00
power	power supply and reset changes for the v5.3 series	2019-07-15 21:06:15 -07:00
powercap	powercap: Invoke powercap_init() and rapl_init() earlier	2019-07-22 11:23:00 +02:00
pps	drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl	2019-07-16 19:23:24 -07:00
ps3	…
ptp	ptp: ptp_dte: remove redundant dev_err message	2019-07-25 11:37:40 -07:00
pwm	pwm: Changes for v5.3-rc1	2019-07-09 08:57:45 -07:00
rapidio	Merge branch 'akpm' (patches from Andrew)	2019-07-17 08:58:04 -07:00
ras	…
regulator	regulator: of: Add of_node_put() before return in function	2019-08-01 14:07:46 +01:00
remoteproc	remoteproc updates for v5.3	2019-07-17 11:44:41 -07:00
reset	ARM: SoC-related driver updates	2019-07-19 17:13:56 -07:00
rpmsg	…
rtc	RTC for 5.3	2019-07-17 10:03:50 -07:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
sbus	…
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
sfi	…
sh	…
siox	…
slimbus	…
sn	…
soc	Merge branch 'pdf_fixes_v1' of https://git.linuxtv.org/mchehab/experimental into mauro	2019-07-22 13:51:20 -06:00
soundwire	soundwire updates for v5.3-rc1	2019-07-05 08:15:08 +02:00
spi	spi: Fixes for v5.3	2019-08-05 11:49:02 -07:00
spmi	…
ssb	ssb/gpio: Remove unnecessary WARN_ON from driver_gpio	2019-06-25 08:05:34 +03:00
staging	staging/octeon: Fix build error without CONFIG_NETDEVICES	2019-07-31 09:07:05 -07:00
target	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
tc	…
tee	…
thermal	int340X/processor_thermal_device: Fix proc_thermal_rapl_remove()	2019-07-23 09:36:07 +02:00
thunderbolt	Driver Core and debugfs changes for 5.3-rc1	2019-07-12 12:24:03 -07:00
tty	TTY fixes for 5.3-rc2	2019-07-28 10:18:33 -07:00
uio	…
usb	xhci: Fix crash if scatter gather is used with Immediate Data Transfer (IDT).	2019-07-25 11:26:42 +02:00
uwb	…
vfio	VFIO updates for v5.3-rc1	2019-07-17 11:23:13 -07:00
vhost	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-08-06 18:44:57 -07:00
video	- New Functionality	2019-07-16 09:25:04 -07:00
virt	…
virtio	Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-07-19 10:42:02 -07:00
visorbus	bus_find_device: Unify the match callback with class_find_device	2019-06-24 05:22:31 +02:00
vlynq	…
vme	…
w1	docs: driver-api: add a series of orphaned documents	2019-07-15 11:03:02 -03:00
watchdog	watchdog: digicolor_wdt: Remove unused variable in dc_wdt_probe	2019-07-15 08:49:11 +02:00
xen	xen: fixes for 5.3-rc3	2019-08-02 15:26:48 -07:00
zorro	…
Kconfig	…
Makefile	…