diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/882-v5.19-rndis_host-limit-scope-of-bogus-MAC-address-detectio.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/882-v5.19-rndis_host-limit-scope-of-bogus-MAC-address-detectio.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/882-v5.19-rndis_host-limit-scope-of-bogus-MAC-address-detectio.patch b/target/linux/generic/backport-5.15/882-v5.19-rndis_host-limit-scope-of-bogus-MAC-address-detectio.patch new file mode 100644 index 0000000000..ebe7a43fd3 --- /dev/null +++ b/target/linux/generic/backport-5.15/882-v5.19-rndis_host-limit-scope-of-bogus-MAC-address-detectio.patch @@ -0,0 +1,63 @@ +From 9bfb4bcda7ba32d73ea322ea56a8ebe32e9247f6 Mon Sep 17 00:00:00 2001 +From: Lech Perczak <lech.perczak@gmail.com> +Date: Sat, 2 Apr 2022 02:19:57 +0200 +Subject: [PATCH 3/3] rndis_host: limit scope of bogus MAC address detection to + ZTE devices +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Reporting of bogus MAC addresses and ignoring configuration of new +destination address wasn't observed outside of a range of ZTE devices, +among which this seems to be the common bug. Align rndis_host driver +with implementation found in cdc_ether, which also limits this workaround +to ZTE devices. + +Suggested-by: Bjørn Mork <bjorn@mork.no> +Cc: Kristian Evensen <kristian.evensen@gmail.com> +Cc: Oliver Neukum <oliver@neukum.org> +Signed-off-by: Lech Perczak <lech.perczak@gmail.com> +--- + drivers/net/usb/rndis_host.c | 17 ++++++++++++----- + 1 file changed, 12 insertions(+), 5 deletions(-) + +--- a/drivers/net/usb/rndis_host.c ++++ b/drivers/net/usb/rndis_host.c +@@ -418,10 +418,7 @@ generic_rndis_bind(struct usbnet *dev, s + goto halt_fail_and_release; + } + +- if (bp[0] & 0x02) +- eth_hw_addr_random(net); +- else +- ether_addr_copy(net->dev_addr, bp); ++ ether_addr_copy(net->dev_addr, bp); + + /* set a nonzero filter to enable data transfers */ + memset(u.set, 0, sizeof *u.set); +@@ -463,6 +460,16 @@ static int rndis_bind(struct usbnet *dev + return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); + } + ++static int zte_rndis_bind(struct usbnet *dev, struct usb_interface *intf) ++{ ++ int status = rndis_bind(dev, intf); ++ ++ if (!status && (dev->net->dev_addr[0] & 0x02)) ++ eth_hw_addr_random(dev->net); ++ ++ return status; ++} ++ + void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) + { + struct rndis_halt *halt; +@@ -615,7 +622,7 @@ static const struct driver_info zte_rndi + .description = "ZTE RNDIS device", + .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .data = RNDIS_DRIVER_DATA_DST_MAC_FIXUP, +- .bind = rndis_bind, ++ .bind = zte_rndis_bind, + .unbind = rndis_unbind, + .status = rndis_status, + .rx_fixup = rndis_rx_fixup, |