Jesper Dangaard Brouer 86e85bf698 sfc: fix XDP-redirect in this driver ... XDP-redirect is broken in this driver sfc. XDP_REDIRECT requires tailroom for skb_shared_info when creating an SKB based on the redirected xdp_frame (both in cpumap and veth). The fix requires some initial explaining. The driver uses RX page-split when possible. It reserves the top 64 bytes in the RX-page for storing dma_addr (struct efx_rx_page_state). It also have the XDP recommended headroom of XDP_PACKET_HEADROOM (256 bytes). As it doesn't reserve any tailroom, it can still fit two standard MTU (1500) frames into one page. The sizeof struct skb_shared_info in 320 bytes. Thus drivers like ixgbe and i40e, reduce their XDP headroom to 192 bytes, which allows them to fit two frames with max 1536 bytes into a 4K page (192+1536+320=2048). The fix is to reduce this drivers headroom to 128 bytes and add the 320 bytes tailroom. This account for reserved top 64 bytes in the page, and still fit two frame in a page for normal MTUs. We must never go below 128 bytes of headroom for XDP, as one cacheline is for xdp_frame area and next cacheline is reserved for metadata area. Fixes: eb9a36be7f ("sfc: perform XDP processing on received packets") Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2020-03-16 18:22:43 -07:00
..
accessibility	…
acpi	ACPI fixes for 5.6-rc4	2020-02-28 09:02:18 -08:00
amba	…
android	binder: prevent UAF for binderfs devices II	2020-03-03 19:58:37 +01:00
ata	…
atm	atm: nicstar: fix if-statement empty body warning	2020-02-29 21:28:30 -08:00
auxdisplay	auxdisplay: charlcd: replace zero-length array with flexible-array member	2020-03-06 22:18:07 +01:00
base	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
bcma	…
block	virtio: fixes	2020-03-09 16:02:32 -07:00
bluetooth	…
bus	Few fixes for omaps for v5.6-rc cycle	2020-02-29 11:47:44 -08:00
cdrom	scsi: compat_ioctl: cdrom: Replace .ioctl with .compat_ioctl in four appropriate places	2020-02-24 15:06:07 -05:00
char	ipmi_si: Avoid spurious errors for optional IRQs	2020-03-11 21:15:19 -05:00
clk	…
clocksource	…
connector	…
counter	…
cpufreq	cpufreq: Fix policy initialization for internal governor drivers	2020-02-27 08:57:48 +01:00
cpuidle	…
crypto	chcr: remove set but not used variable 'status'	2020-03-16 02:02:04 -07:00
dax	…
dca	…
devfreq	Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"	2020-02-24 11:14:29 +09:00
dio	…
dma	dmaengine: imx-sdma: Fix the event id check to include RX event for UART6	2020-02-25 14:15:26 +05:30
dma-buf	dma-buf: free dmabuf->name in dma_buf_release()	2020-02-27 18:01:58 +05:30
edac	EDAC/synopsys: Do not print an error with back-to-back snprintf() calls	2020-02-27 16:44:25 +01:00
eisa	…
extcon	…
firewire	…
firmware	ARM: SoC fixes	2020-03-08 17:36:22 -07:00
fpga	…
fsi	fsi: aspeed: add unspecified HAS_IOMEM dependency	2020-02-10 13:45:49 -08:00
gnss	…
gpio	gpio: sifive: fix static checker warning	2020-02-10 13:54:17 +01:00
gpu	Merge tag 'topic/mst-bw-check-fixes-for-airlied-2020-03-12-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes	2020-03-13 10:38:25 +10:00
greybus	…
hid	HID: hyperv: NULL check before some freeing functions is not needed.	2020-03-05 14:17:11 +00:00
hsi	…
hv	…
hwmon	hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()	2020-03-03 12:42:55 -08:00
hwspinlock	…
hwtracing	…
i2c	i2c: altera: Fix potential integer overflow	2020-02-13 09:29:30 +01:00
i3c	…
ide	scsi: compat_ioctl: cdrom: Replace .ioctl with .compat_ioctl in four appropriate places	2020-02-24 15:06:07 -05:00
idle	…
iio	…
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2020-02-15 16:49:25 -08:00
interconnect	interconnect: Handle memory allocation errors	2020-03-03 08:02:57 +01:00
iommu	iommu/arm-smmu: Restore naming of driver parameter prefix	2020-02-19 12:03:21 +01:00
ipack	…
irqchip	irqchip/gic-v4.1: Avoid 64bit division for the sake of 32bit ARM	2020-02-09 15:47:37 -08:00
isdn	…
leds	…
lightnvm	…
macintosh	macintosh: therm_windtunnel: fix regression when instantiating devices	2020-02-29 21:13:22 +01:00
mailbox	…
mcb	…
md	block-5.6-2020-03-07	2020-03-07 14:14:38 -06:00
media	media: mc-entity.c: use & to check pad flags, not ==	2020-02-24 15:10:04 +01:00
memory	…
memstick	…
message	…
mfd	…
misc	altera-stapl: altera_get_note: prevent write beyond end of 'key'	2020-03-03 08:02:57 +01:00
mmc	mmc: sdhci-pci-gli: Enable MSI interrupt for GL975x	2020-03-04 15:41:22 +01:00
mtd	…
mux	…
net	sfc: fix XDP-redirect in this driver	2020-03-16 18:22:43 -07:00
nfc	NFC: Replace zero-length array with flexible-array member	2020-02-27 12:06:20 -08:00
ntb	…
nubus	…
nvdimm	…
nvme	nvme-pci: Hold cq_poll_lock while completing CQEs	2020-02-28 01:32:14 +09:00
nvmem	…
of	drivers/of/of_mdio.c:fix of_mdiobus_register()	2020-03-03 19:01:51 -08:00
opp	…
oprofile	…
parisc	…
parport	…
pci	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
pcmcia	…
perf	drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer	2020-03-02 12:07:35 +00:00
phy	phy: for 5.6-rc	2020-03-04 13:28:52 +01:00
pinctrl	pinctrl: qcom: Assign irq_eoi conditionally	2020-03-09 16:31:34 +01:00
platform	platform/chrome: wilco_ec: Include asm/unaligned instead of linux/ path	2020-02-11 09:10:36 +01:00
pnp	…
power	…
powercap	…
pps	…
ps3	…
ptp	ptp: add VMware virtual PTP clock driver	2020-03-05 17:25:07 -08:00
pwm	…
rapidio	…
ras	…
regulator	regulator: Fixes for v5.6	2020-03-06 14:48:30 -06:00
remoteproc	remoteproc: clean up notification config	2020-03-16 17:31:51 -07:00
reset	reset: intel: add unspecified HAS_IOMEM dependency	2020-02-10 11:11:55 +01:00
rpmsg	…
rtc	…
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
sbus	…
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
sfi	…
sh	…
siox	…
slimbus	…
soc	i.MX fixes for 5.6:	2020-02-24 09:57:05 -08:00
soundwire	…
spi	spi: Fixes for v5.6	2020-03-06 14:50:16 -06:00
spmi	spmi: pmic-arb: Set lockdep class for hierarchical irq domains	2020-02-10 13:16:04 +01:00
ssb	…
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
target	scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"	2020-02-14 17:13:54 -05:00
tc	…
tee	arm64: dts: agilex: fix gmac compatible	2020-03-03 16:40:56 -08:00
thermal	…
thunderbolt	thunderbolt: Prevent crash if non-active NVMem file is read	2020-02-13 04:59:30 -08:00
tty	tty: serial: fsl_lpuart: free IDs allocated by IDA	2020-03-06 14:10:44 +01:00
uio	…
usb	usb: dwc3: gadget: Update chain bit correctly when using sg list	2020-03-04 10:58:16 +01:00
vfio	…
vhost	vhost: Check docket sk_family instead of call getname	2020-02-22 21:41:42 -08:00
video	ARM: SoC fixes	2020-03-08 17:36:22 -07:00
virt	…
virtio	virtio_balloon: Adjust label in virtballoon_probe	2020-03-08 05:35:24 -04:00
visorbus	…
vlynq	…
vme	…
w1	…
watchdog	ACPI fixes for 5.6-rc4	2020-02-28 09:02:18 -08:00
xen	xen/xenbus: fix locking	2020-03-05 09:42:23 -06:00
zorro	Kbuild updates for v5.6 (2nd)	2020-02-09 16:05:50 -08:00
Kconfig	…
Makefile	…