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7c3850adbc
linux/drivers/net/phy
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Sebastian Andrzej Siewior 53bc8d2af0 net: dp83640: expire old TX-skb 
During sendmsg() a cloned skb is saved via dp83640_txtstamp() in
->tx_queue. After the NIC sends this packet, the PHY will reply with a
timestamp for that TX packet. If the cable is pulled at the right time I
don't see that packet. It might gets flushed as part of queue shutdown
on NIC's side.
Once the link is up again then after the next sendmsg() we enqueue
another skb in dp83640_txtstamp() and have two on the list. Then the PHY
will send a reply and decode_txts() attaches it to the first skb on the
list.
No crash occurs since refcounting works but we are one packet behind.
linuxptp/ptp4l usually closes the socket and opens a new one (in such a
timeout case) so those "stale" replies never get there. However it does
not resume normal operation anymore.

Purge old skbs in decode_txts().

Fixes: cb646e2b02 ("ptp: Added a clock driver for the National Semiconductor PHYTER.")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-04 08:54:52 -08:00
..
amd.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
aquantia.c net: ethernet: Convert phydev advertize and supported from u32 to link mode 2018-11-11 10:10:01 -08:00
asix.c net: phy: Fixup GPLv2+ SPDX tags based on license text 2019-01-22 20:57:03 -08:00
at803x.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
bcm7xxx.c net: phy: bcm7xxx: Add entry for BCM7255 2018-11-07 21:50:27 -08:00
bcm63xx.c net: ethernet: Convert phydev advertize and supported from u32 to link mode 2018-11-11 10:10:01 -08:00
bcm87xx.c net: phy: Add missing features to PHY drivers 2019-01-16 15:41:02 -08:00
bcm-cygnus.c net: phy: broadcom: Fix bcm_write_exp() 2018-05-23 15:27:01 -04:00
bcm-phy-lib.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
bcm-phy-lib.h net: phy: broadcom: Fix bcm_write_exp() 2018-05-23 15:27:01 -04:00
broadcom.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-11-11 17:57:54 -08:00
cicada.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
cortina.c net: phy: add missing phy driver features 2019-01-17 22:03:25 -08:00
davicom.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
dp83tc811.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
dp83640_reg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dp83640.c net: dp83640: expire old TX-skb 2019-02-04 08:54:52 -08:00
dp83822.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
dp83848.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
dp83867.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
et1011c.c net: phy: et011c: Remove incorrect PHY_POLL flags 2018-09-16 15:31:01 -07:00
fixed_phy.c Fixed PHY: Add fixed_phy_change_carrier() 2018-12-17 11:24:32 -08:00
icplus.c net: phy: icplus: allow configuring the interrupt function on IP101GR 2018-11-18 16:16:20 -08:00
intel-xway.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
Kconfig net: phy: bcm63xx: Allow to be built with COMPILE_TEST 2018-09-12 20:24:20 -07:00
lxt.c net: phy: Convert u32 phydev->lp_advertising to linkmode 2018-11-11 10:10:01 -08:00
Makefile net: phy: mscc-miim: Add MDIO driver 2018-05-15 16:41:15 -04:00
marvell10g.c net: mii: Rename mii_stat1000_to_linkmode_lpa_t 2018-12-05 16:26:16 -08:00
marvell.c Revert "net: phy: marvell: avoid pause mode on SGMII-to-Copper for 88e151x" 2019-02-02 19:43:23 -08:00
mdio_bus.c net: phy: mdio_bus: add missing device_del() in mdiobus_register() error handling 2019-01-18 11:07:33 -08:00
mdio_device.c phylib: rename reset-(post-)delay-us to reset-(de)assert-us 2017-12-27 11:06:50 -05:00
mdio-bcm-iproc.c net: phy: Initialize mdio clock at probe function 2017-02-09 17:10:23 -05:00
mdio-bcm-unimac.c net: phy: mdio-bcm-unimac: mark PM functions as __maybe_unused 2018-09-28 10:25:11 -07:00
mdio-bitbang.c net: phy: mdio-bitbang: Remove reset support 2018-04-19 15:59:10 -04:00
mdio-boardinfo.c net: phy: mdio-boardinfo: Allow recursive mdiobus_register() 2018-04-20 10:33:26 -04:00
mdio-boardinfo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mdio-cavium.c
mdio-cavium.h
mdio-gpio.c net: phy: mdio-gpio: Add phy_ignore_ta_mask to platform data 2018-12-08 21:33:30 -08:00
mdio-hisi-femac.c net: phy: Fixup GPLv2+ SPDX tags based on license text 2019-01-22 20:57:03 -08:00
mdio-i2c.c net: phy: add I2C mdio bus 2017-08-06 20:55:28 -07:00
mdio-i2c.h net: phy: add I2C mdio bus 2017-08-06 20:55:28 -07:00
mdio-moxart.c
mdio-mscc-miim.c drivers: net: Remove device_node checks with of_mdiobus_register() 2018-05-16 14:20:36 -04:00
mdio-mux-bcm-iproc.c net: phy: mdio-mux-bcm-iproc: simplify getting .driver_data 2018-10-21 21:10:12 -07:00
mdio-mux-gpio.c gpiolib: Pass array info to get/set array functions 2018-09-13 11:16:54 +02:00
mdio-mux-mmioreg.c net: phy: mdio-mux: slience probe defer error 2018-03-07 12:39:59 -05:00
mdio-mux.c net: mdio-mux: add mdio_mux parameter to mdio_mux_init() 2017-09-05 14:42:52 -07:00
mdio-octeon.c
mdio-sun4i.c mdio-sun4i: Fix a memory leak 2018-01-08 14:30:28 -05:00
mdio-thunder.c net: phy: Convert to using %pOFn instead of device_node.name 2018-10-01 23:29:37 -07:00
mdio-xgene.c net: phy: xgene: disable clk on error paths 2017-12-18 15:09:42 -05:00
mdio-xgene.h drivers: net: phy: xgene: Add lock to protect mac access 2017-05-16 11:41:08 -04:00
meson-gxl.c net: phy: meson-gxl: Use the genphy_soft_reset callback 2019-01-15 22:27:34 -08:00
micrel.c net: phy: Add missing features to PHY drivers 2019-01-16 15:41:02 -08:00
microchip_t1.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
microchip.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
mscc.c net: phy: mscc: Fix the VSC 8531/41 Chip Init sequence 2018-12-19 10:33:25 -08:00
national.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
phy_device.c net: phy: phy driver features are mandatory 2019-01-19 10:03:08 -08:00
phy_led_triggers.c net: phy: leds: Don't make our own link speed names 2018-11-09 20:13:51 -08:00
phy-c45.c net: phy: Convert u32 phydev->lp_advertising to linkmode 2018-11-11 10:10:01 -08:00
phy-core.c net: phy: Add support for resolving 5G and 2.5G autoneg 2018-11-11 10:10:02 -08:00
phy.c net: phy: fix too strict check in phy_start_aneg 2019-01-15 13:33:44 -08:00
phylink.c net: ethernet: Convert phydev advertize and supported from u32 to link mode 2018-11-11 10:10:01 -08:00
qsemi.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
realtek.c net: phy: realtek: use new PHYID matching macros 2018-11-11 09:44:14 -08:00
rockchip.c net: phy: Fixup GPLv2+ SPDX tags based on license text 2019-01-22 20:57:03 -08:00
sfp-bus.c net: phy: sfp: correct store of detected link modes 2018-11-29 10:47:44 -08:00
sfp.c net: phy: sfp: remove sfp_mutex's definition 2018-10-11 12:10:06 -07:00
sfp.h sfp: add sfp-bus to bridge between network devices and sfp cages 2017-08-06 20:55:29 -07:00
smsc.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
spi_ks8995.c drivers/net: Use octal not symbolic permissions 2018-03-26 12:07:49 -04:00
ste10Xp.c net: phy: remove flag PHY_HAS_INTERRUPT from driver configs 2018-11-11 09:36:56 -08:00
swphy.c
swphy.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
teranetics.c net: phy: add missing phy driver features 2019-01-17 22:03:25 -08:00
uPD60620.c net: phy: Convert u32 phydev->lp_advertising to linkmode 2018-11-11 10:10:01 -08:00
vitesse.c net: phy: vitesse: remove duplicate support for VSC8574 2018-11-23 17:25:32 -08:00
xilinx_gmii2rgmii.c net: phy: xgmiitorgmii: Check read_status results 2018-06-28 16:12:06 +09:00