diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/backport-5.4/315-v5.10-usbnet-ipeth-fix-connectivity-with-ios-14.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/315-v5.10-usbnet-ipeth-fix-connectivity-with-ios-14.patch b/target/linux/generic/backport-5.4/315-v5.10-usbnet-ipeth-fix-connectivity-with-ios-14.patch new file mode 100644 index 0000000000..bb572b3f21 --- /dev/null +++ b/target/linux/generic/backport-5.4/315-v5.10-usbnet-ipeth-fix-connectivity-with-ios-14.patch @@ -0,0 +1,44 @@ +From: Yves-Alexis Perez <corsac@corsac.net> +Subject: [PATCH] usbnet: ipheth: fix connectivity with iOS 14 +Date: Thu, 19 Nov 2020 18:24:39 +0100 +Archived-At: <https://lore.kernel.org/stable/20201119172439.94988-1-corsac@corsac.net/> +List-Post: <mailto:stable@vger.kernel.org> + +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 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 +Cc: stable@vger.kernel.org +--- + drivers/net/usb/ipheth.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- 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) + |