From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yves-Alexis Perez <corsac@corsac.net>,
Matti Vuorela <matti.vuorela@bitfactor.fi>,
Jakub Kicinski <kuba@kernel.org>, Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.9 16/39] usbnet: ipheth: fix connectivity with iOS 14
Date: Thu, 3 Dec 2020 08:28:10 -0500 [thread overview]
Message-ID: <20201203132834.930999-16-sashal@kernel.org> (raw)
In-Reply-To: <20201203132834.930999-1-sashal@kernel.org>
From: Yves-Alexis Perez <corsac@corsac.net>
[ Upstream commit f33d9e2b48a34e1558b67a473a1fc1d6e793f93c ]
Starting with iOS 14 released in September 2020, connectivity using the
personal hotspot USB tethering function of iOS devices is broken.
Communication between the host and the device (for example ICMP traffic
or DNS resolution using the DNS service running in the device itself)
works fine, but communication to endpoints further away doesn't work.
Investigation on the matter shows that no UDP and ICMP traffic from the
tethered host is reaching the Internet at all. For TCP traffic there are
exchanges between tethered host and server but packets are modified in
transit leading to impossible communication.
After some trials Matti Vuorela discovered that reducing the URB buffer
size by two bytes restored the previous behavior. While a better
solution might exist to fix the issue, since the protocol is not
publicly documented and considering the small size of the fix, let's do
that.
Tested-by: Matti Vuorela <matti.vuorela@bitfactor.fi>
Signed-off-by: Yves-Alexis Perez <corsac@corsac.net>
Link: https://lore.kernel.org/linux-usb/CAAn0qaXmysJ9vx3ZEMkViv_B19ju-_ExN8Yn_uSefxpjS6g4Lw@mail.gmail.com/
Link: https://github.com/libimobiledevice/libimobiledevice/issues/1038
Link: https://lore.kernel.org/r/20201119172439.94988-1-corsac@corsac.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/usb/ipheth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
index b09b45382faf5..207e59e74935a 100644
--- a/drivers/net/usb/ipheth.c
+++ b/drivers/net/usb/ipheth.c
@@ -59,7 +59,7 @@
#define IPHETH_USBINTF_SUBCLASS 253
#define IPHETH_USBINTF_PROTO 1
-#define IPHETH_BUF_SIZE 1516
+#define IPHETH_BUF_SIZE 1514
#define IPHETH_IP_ALIGN 2 /* padding at front of URB */
#define IPHETH_TX_TIMEOUT (5 * HZ)
--
2.27.0
next prev parent reply other threads:[~2020-12-03 13:30 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 13:27 [PATCH AUTOSEL 5.9 01/39] phy: usb: Fix incorrect clearing of tca_drv_sel bit in SETUP reg for 7211 Sasha Levin
2020-12-03 13:27 ` [PATCH AUTOSEL 5.9 02/39] arm64: dts: rockchip: Remove system-power-controller from pmic on Odroid Go Advance Sasha Levin
2020-12-03 13:27 ` [PATCH AUTOSEL 5.9 03/39] iwlwifi: pcie: limit memory read spin time Sasha Levin
2020-12-03 13:27 ` [PATCH AUTOSEL 5.9 04/39] arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards Sasha Levin
2020-12-03 13:27 ` [PATCH AUTOSEL 5.9 05/39] arm64: dts: rockchip: Reorder LED triggers from mmc devices on rk3399-roc-pc Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 06/39] iwlwifi: sta: set max HE max A-MPDU according to HE capa Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 07/39] iwlwifi: pcie: set LTR to avoid completion timeout Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 08/39] iwlwifi: mvm: fix kernel panic in case of assert during CSA Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 09/39] powerpc: Drop -me200 addition to build flags Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 10/39] arm64: dts: broadcom: clear the warnings caused by empty dma-ranges Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 11/39] ARC: stack unwinding: don't assume non-current task is sleeping Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 12/39] scsi: ufs: Fix unexpected values from ufshcd_read_desc_param() Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 13/39] scsi: ufs: Make sure clk scaling happens only when HBA is runtime ACTIVE Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 14/39] interconnect: qcom: msm8916: Remove rpm-ids from non-RPM nodes Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 15/39] interconnect: qcom: qcs404: Remove GPU and display RPM IDs Sasha Levin
2020-12-03 13:28 ` Sasha Levin [this message]
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 17/39] tun: honor IOCB_NOWAIT flag Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 18/39] ibmvnic: skip tx timeout reset while in resetting Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 19/39] irqchip/gic-v3-its: Unconditionally save/restore the ITS state on suspend Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 20/39] drm/exynos: depend on COMMON_CLK to fix compile tests Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 21/39] spi: spi-nxp-fspi: fix fspi panic by unexpected interrupts Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 22/39] arm-smmu-qcom: Ensure the qcom_scm driver has finished probing Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 23/39] habanalabs/gaudi: fix missing code in ECC handling Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 24/39] btrfs: do nofs allocations when adding and removing qgroup relations Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 25/39] btrfs: fix lockdep splat when enabling and disabling qgroups Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 26/39] soc: fsl: dpio: Get the cpumask through cpumask_of(cpu) Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 27/39] sched/idle: Fix arch_cpu_idle() vs tracing Sasha Levin
2020-12-03 14:54 ` Heiko Carstens
2020-12-03 17:10 ` Peter Zijlstra
2020-12-13 14:10 ` Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 28/39] intel_idle: Fix intel_idle() " Sasha Levin
2020-12-03 17:10 ` Peter Zijlstra
2020-12-13 14:11 ` Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 29/39] arm64: tegra: Disable the ACONNECT for Jetson TX2 Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 30/39] platform/x86: thinkpad_acpi: add P1 gen3 second fan support Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 31/39] platform/x86: thinkpad_acpi: Do not report SW_TABLET_MODE on Yoga 11e Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 32/39] platform/x86: thinkpad_acpi: Add BAT1 is primary battery quirk for Thinkpad Yoga 11e 4th gen Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 33/39] platform/x86: thinkpad_acpi: Whitelist P15 firmware for dual fan control Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 34/39] platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 35/39] platform/x86: intel-vbtn: Support for tablet mode on HP Pavilion 13 x360 PC Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 36/39] platform/x86: touchscreen_dmi: Add info for the Predia Basic tablet Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 37/39] platform/x86: touchscreen_dmi: Add info for the Irbis TW118 tablet Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 38/39] can: m_can: m_can_dev_setup(): add support for bosch mcan version 3.3.0 Sasha Levin
2020-12-03 13:28 ` [PATCH AUTOSEL 5.9 39/39] can: af_can: can_rx_unregister(): remove WARN() statement from list operation sanity check Sasha Levin
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