Vladimir Oltean 1328a88325 net: dsa: felix: purge skb from TX timestamping queue if it cannot be sent ... At present, when a PTP packet which requires TX timestamping gets dropped under congestion by the switch, things go downhill very fast. The driver keeps a clone of that skb in a queue of packets awaiting TX timestamp interrupts, but interrupts will never be raised for the dropped packets. Moreover, matching timestamped packets to timestamps is done by a 2-bit timestamp ID, and this can wrap around and we can match on the wrong skb. Since with the default NPI-based tagging protocol, we get no notification about packet drops, the best we can do is eventually recover from the drop of a PTP frame: its skb will be dead memory until another skb which was assigned the same timestamp ID happens to find it. However, with the ocelot-8021q tagger which injects packets using the manual register interface, it appears that we can check for more information, such as: - whether the input queue has reached the high watermark or not - whether the injection group's FIFO can accept additional data or not so we know that a PTP frame is likely to get dropped before actually sending it, and drop it ourselves (because DSA uses NETIF_F_LLTX, so it can't return NETDEV_TX_BUSY to ask the qdisc to requeue the packet). But when we do that, we can also remove the skb from the timestamping queue, because there surely won't be any timestamp that matches it. Fixes: 0a6f17c6ae ("net: dsa: tag_ocelot_8021q: add support for PTP timestamping") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-10-12 17:35:18 -07:00
..
accessibility
acpi	ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect	2021-09-27 11:40:43 -07:00
amba
android	binder: make sure fd closes complete	2021-09-14 09:02:13 +02:00
ata	libata: Add ATA_HORKAGE_NO_NCQ_ON_ATI for Samsung 860 and 870 SSD.	2021-09-03 08:06:02 -06:00
atm
auxdisplay
base	Driver core fixes for 5.15-rc4	2021-10-03 11:10:09 -07:00
bcma	Driver core update for 5.15-rc1	2021-09-01 08:44:42 -07:00
block	nbd: use shifts rather than multiplies	2021-09-29 20:31:41 -06:00
bluetooth	Bluetooth: btusb: Remove WAKEUP_DISABLE and add WAKEUP_AUTOSUSPEND for Realtek devices	2021-08-19 17:08:31 +02:00
bus	bus: ti-sysc: Use CLKDM_NOAUTO for dra7 dcan1 for errata i893	2021-10-06 08:01:13 +03:00
cdrom
char	IPMI: A couple of very minor fixes for style and rate limiting	2021-09-12 11:44:58 -07:00
clk	One patch to fix an unused variable warning in a Qualcomm clk driver.	2021-09-11 10:05:56 -07:00
clocksource	- converted Pistachio platform to use MIPS generic kernel	2021-09-03 11:11:54 -07:00
comedi	comedi: Fix memory leak in compat_insnlist()	2021-09-21 17:53:54 +02:00
connector
counter
cpufreq	Power management fixes for 5.15-rc2	2021-09-17 12:05:04 -07:00
cpuidle	- Core Frameworks	2021-09-07 12:38:59 -07:00
crypto	crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd()	2021-09-24 15:58:41 +08:00
cxl	cxl for v5.15	2021-09-09 11:48:27 -07:00
dax	libnvdimm for v5.15	2021-09-09 11:39:57 -07:00
dca
devfreq	devfreq: use HZ macros	2021-09-08 11:50:26 -07:00
dio
dma	dmaengine updates for v5.15-rc1	2021-09-09 11:07:47 -07:00
dma-buf	dma-buf: DMABUF_SYSFS_STATS should depend on DMA_SHARED_BUFFER	2021-09-07 12:42:21 +05:30
edac	EDAC/dmc520: Assign the proper type to dimm->edac_mode	2021-09-16 11:00:12 +02:00
eisa
extcon
firewire	FireWire (IEEE 1394) subsystem updates:	2021-09-11 09:47:33 -07:00
firmware	SCMI fixes for v5.15	2021-10-07 21:14:04 +02:00
fpga	fpga: dfl: Avoid reads to AFU CSRs during enumeration	2021-09-16 15:20:55 -07:00
fsi
gnss
gpio	gpio fixes for v5.15-rc4	2021-09-30 12:11:35 -07:00
gpu	drm/i915: fix blank screen booting crashes	2021-10-02 09:39:15 -07:00
greybus
hid	HID: amd_sfh: Fix potential NULL pointer dereference	2021-09-27 10:00:43 +02:00
hsi
hv	hyperv-fixes for 5.15-rc2	2021-09-15 17:18:56 -07:00
hwmon	hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field	2021-10-02 05:14:11 -07:00
hwspinlock
hwtracing	coresight: syscfg: Fix compiler warning	2021-09-14 09:03:16 +02:00
i2c	platform-drivers-x86 for v5.15-1	2021-09-02 13:49:39 -07:00
i3c
idle
iio	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
infiniband	RDMA/hns: Add the check of the CQE size of the user space	2021-09-27 14:49:49 -03:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2021-09-11 09:08:28 -07:00
interconnect	interconnect: qcom: sdm660: Add missing a2noc qos clocks	2021-09-13 15:49:55 +03:00
iommu	iommu/dart: Clear sid2group entry when a group is freed	2021-09-28 11:47:24 +02:00
ipack	ipack: ipoctal: fix module reference leak	2021-09-27 17:38:49 +02:00
irqchip	irqchip/gic: Work around broken Renesas integration	2021-09-22 14:44:25 +01:00
isdn	isdn: mISDN: Fix sleeping function called from invalid context	2021-10-09 13:42:51 +01:00
leds	leds: pca955x: Switch to i2c probe_new	2021-08-20 11:00:08 +02:00
macintosh	memblock: introduce saner 'memblock_free_ptr()' interface	2021-09-14 13:23:22 -07:00
mailbox	mailbox: cmdq: add multi-gce clocks support for mt8195	2021-08-31 22:57:45 -05:00
mcb	mcb: fix error handling in mcb_alloc_bus()	2021-09-14 11:22:26 +02:00
md	md: fix a lock order reversal in md_alloc	2021-09-22 08:45:58 -07:00
media	media fixes for v5.15-rc4	2021-09-27 13:05:12 -07:00
memory
memstick	Driver core update for 5.15-rc1	2021-09-01 08:44:42 -07:00
message
mfd	- Core Frameworks	2021-09-07 12:38:59 -07:00
misc	misc: bcm-vk: fix tty registration race	2021-09-21 16:17:15 +02:00
mmc	mmc: renesas_sdhi: fix regression with hard reset on old SDHIs	2021-09-06 18:10:49 +02:00
most
mtd	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
mux
net	net: dsa: felix: purge skb from TX timestamping queue if it cannot be sent	2021-10-12 17:35:18 -07:00
nfc	nfc: st-nci: Add SPI ID matching DT compatible	2021-09-23 12:53:06 +01:00
ntb	Bug fixes and clean-ups for Linux v5.15	2021-09-07 13:05:02 -07:00
nubus
nvdimm	nvdimm/pmem: fix creating the dax group	2021-09-27 11:40:43 -07:00
nvme	nvme: add command id quirk for apple controllers	2021-09-27 10:02:07 -06:00
nvmem	nvmem: NVMEM_NINTENDO_OTP should depend on WII	2021-09-21 17:38:37 +02:00
of	of: restricted dma: Fix condition for rmem init	2021-09-17 15:58:09 -05:00
opp	Merge branches 'pm-pci', 'pm-sleep', 'pm-domains' and 'powercap'	2021-08-30 19:25:42 +02:00
parisc	parisc: Move pci_dev_is_behind_card_dino to where it is used	2021-09-09 12:44:31 +02:00
parport	parisc architecture updates for kernel 5.15:	2021-09-02 13:16:00 -07:00
pci	hyperv-fixes for 5.15	2021-10-07 09:44:48 -07:00
pcmcia
perf	KVM: arm64: Fix PMU probe ordering	2021-09-20 12:43:34 +01:00
phy	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
pinctrl	pinctrl: qcom: sc7280: Add PM suspend callbacks	2021-09-23 23:09:14 +02:00
platform	platform/x86: gigabyte-wmi: add support for B550I Aorus Pro AX	2021-09-21 15:49:23 +02:00
pnp
power	power supply and reset changes for the v5.15 series	2021-08-30 11:47:32 -07:00
powercap	powercap: Add Power Limit4 support for Alder Lake SoC	2021-08-25 20:12:16 +02:00
pps
ps3
ptp	Networking fixes for 5.15-rc5, including fixes from xfrm, bpf,	2021-10-07 09:50:31 -07:00
pwm	pwm: mtk-disp: Implement atomic API .get_state()	2021-09-02 22:27:46 +02:00
rapidio
ras
regulator	regulator: max14577: Revert "regulator: max14577: Add proper module aliases strings"	2021-09-17 13:16:38 +01:00
remoteproc
reset	ARM: SoC drivers for 5.15	2021-09-01 15:25:28 -07:00
rpmsg
rtc	rtc: cmos: Disable irq around direct invocation of cmos_interrupt()	2021-09-14 10:20:19 +02:00
s390	s390 updates for 5.15-rc4	2021-10-01 14:45:23 -07:00
sbus
scsi	scsi: csiostor: Add module softdep on cxgb4	2021-09-28 23:26:42 -04:00
sh
siox
slimbus	Driver core update for 5.15-rc1	2021-09-01 08:44:42 -07:00
soc	Fixes for omaps for v5.15	2021-10-07 21:13:57 +02:00
soundwire	sound updates for 5.15-rc1	2021-09-01 10:29:29 -07:00
spi	spi: Fix modalias issues	2021-09-22 11:58:24 -07:00
spmi
ssb
staging	media fixes for v5.15-rc5	2021-10-04 09:53:40 -07:00
target	scsi: target: Fix spelling mistake "CONFLIFT" -> "CONFLICT"	2021-09-22 00:17:29 -04:00
tc
tee	tee/optee/shm_pool: fix application of sizeof to pointer	2021-09-14 07:54:56 +02:00
thermal	thermal/drivers/tsens: Fix wrong check for tzd in irq handlers	2021-09-21 15:17:11 +02:00
thunderbolt	thunderbolt: test: split up test cases in tb_test_credit_alloc_all	2021-09-06 12:27:03 -07:00
tty	tty: unexport tty_ldisc_release	2021-09-14 11:18:47 +02:00
uio
usb	ARM: SoC fixes for v5.15	2021-10-07 14:01:29 -07:00
vdpa	vdpa/mlx5: Avoid executing set_vq_ready() if device is reset	2021-09-14 18:10:43 -04:00
vfio	vfio/pci: add missing identifier name in argument of function prototype	2021-09-23 14:12:36 -06:00
vhost	virtio,vdpa: fixes	2021-09-28 07:27:29 -07:00
video	tgafb: clarify dependencies	2021-09-18 11:15:01 -07:00
virt
virtio	virtio: don't fail on !of_device_is_compatible	2021-09-14 18:09:57 -04:00
visorbus
vlynq
vme
w1
watchdog	watchdog/sb_watchdog: fix compilation problem due to COMPILE_TEST	2021-09-27 11:57:19 -07:00
xen	xen: branch for v5.15-rc3	2021-09-25 15:37:31 -07:00
zorro
Kconfig
Makefile