diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/881-v5.19-rndis_host-enable-the-bogus-MAC-fixup-for-ZTE-device.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/881-v5.19-rndis_host-enable-the-bogus-MAC-fixup-for-ZTE-device.patch | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/target/linux/generic/backport-5.10/881-v5.19-rndis_host-enable-the-bogus-MAC-fixup-for-ZTE-device.patch b/target/linux/generic/backport-5.10/881-v5.19-rndis_host-enable-the-bogus-MAC-fixup-for-ZTE-device.patch deleted file mode 100644 index e37c89a360..0000000000 --- a/target/linux/generic/backport-5.10/881-v5.19-rndis_host-enable-the-bogus-MAC-fixup-for-ZTE-device.patch +++ /dev/null @@ -1,118 +0,0 @@ -From 69a9efb689b43fedf5f19431f1889aa6b8d35d55 Mon Sep 17 00:00:00 2001 -From: Lech Perczak <lech.perczak@gmail.com> -Date: Fri, 1 Apr 2022 22:04:01 +0200 -Subject: [PATCH 2/3] rndis_host: enable the bogus MAC fixup for ZTE devices - from cdc_ether -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Certain ZTE modems, namely: MF823. MF831, MF910, built-in modem from -MF286R, expose both CDC-ECM and RNDIS network interfaces. -They have a trait of ignoring the locally-administered MAC address -configured on the interface both in CDC-ECM and RNDIS part, -and this leads to dropping of incoming traffic by the host. -However, the workaround was only present in CDC-ECM, and MF286R -explicitly requires it in RNDIS mode. - -Re-use the workaround in rndis_host as well, to fix operation of MF286R -module, some versions of which expose only the RNDIS interface. Do so by -introducing new flag, RNDIS_DRIVER_DATA_DST_MAC_FIXUP, and testing for it -in rndis_rx_fixup. This is required, as RNDIS uses frame batching, and all -of the packets inside the batch need the fixup. This might introduce a -performance penalty, because test is done for every returned Ethernet -frame. - -Apply the workaround to both "flavors" of RNDIS interfaces, as older ZTE -modems, like MF823 found in the wild, report the USB_CLASS_COMM class -interfaces, while MF286R reports USB_CLASS_WIRELESS_CONTROLLER. - -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 | 32 ++++++++++++++++++++++++++++++++ - include/linux/usb/rndis_host.h | 1 + - 2 files changed, 33 insertions(+) - ---- a/drivers/net/usb/rndis_host.c -+++ b/drivers/net/usb/rndis_host.c -@@ -486,10 +486,14 @@ EXPORT_SYMBOL_GPL(rndis_unbind); - */ - int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) - { -+ bool dst_mac_fixup; -+ - /* This check is no longer done by usbnet */ - if (skb->len < dev->net->hard_header_len) - return 0; - -+ dst_mac_fixup = !!(dev->driver_info->data & RNDIS_DRIVER_DATA_DST_MAC_FIXUP); -+ - /* peripheral may have batched packets to us... */ - while (likely(skb->len)) { - struct rndis_data_hdr *hdr = (void *)skb->data; -@@ -524,10 +528,17 @@ int rndis_rx_fixup(struct usbnet *dev, s - break; - skb_pull(skb, msg_len - sizeof *hdr); - skb_trim(skb2, data_len); -+ -+ if (unlikely(dst_mac_fixup)) -+ usbnet_cdc_zte_rx_fixup(dev, skb2); -+ - usbnet_skb_return(dev, skb2); - } - - /* caller will usbnet_skb_return the remaining packet */ -+ if (unlikely(dst_mac_fixup)) -+ usbnet_cdc_zte_rx_fixup(dev, skb); -+ - return 1; - } - EXPORT_SYMBOL_GPL(rndis_rx_fixup); -@@ -601,6 +612,17 @@ static const struct driver_info rndis_po - .tx_fixup = rndis_tx_fixup, - }; - -+static const struct driver_info zte_rndis_info = { -+ .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, -+ .unbind = rndis_unbind, -+ .status = rndis_status, -+ .rx_fixup = rndis_rx_fixup, -+ .tx_fixup = rndis_tx_fixup, -+}; -+ - /*-------------------------------------------------------------------------*/ - - static const struct usb_device_id products [] = { -@@ -610,6 +632,16 @@ static const struct usb_device_id produc - USB_CLASS_COMM, 2 /* ACM */, 0x0ff), - .driver_info = (unsigned long) &rndis_poll_status_info, - }, { -+ /* ZTE WWAN modules */ -+ USB_VENDOR_AND_INTERFACE_INFO(0x19d2, -+ USB_CLASS_WIRELESS_CONTROLLER, 1, 3), -+ .driver_info = (unsigned long)&zte_rndis_info, -+}, { -+ /* ZTE WWAN modules, ACM flavour */ -+ USB_VENDOR_AND_INTERFACE_INFO(0x19d2, -+ USB_CLASS_COMM, 2 /* ACM */, 0x0ff), -+ .driver_info = (unsigned long)&zte_rndis_info, -+}, { - /* Hytera Communications DMR radios' "Radio to PC Network" */ - USB_VENDOR_AND_INTERFACE_INFO(0x238b, - USB_CLASS_COMM, 2 /* ACM */, 0x0ff), ---- a/include/linux/usb/rndis_host.h -+++ b/include/linux/usb/rndis_host.h -@@ -197,6 +197,7 @@ struct rndis_keepalive_c { /* IN (option - - /* Flags for driver_info::data */ - #define RNDIS_DRIVER_DATA_POLL_STATUS 1 /* poll status before control */ -+#define RNDIS_DRIVER_DATA_DST_MAC_FIXUP 2 /* device ignores configured MAC address */ - - extern void rndis_status(struct usbnet *dev, struct urb *urb); - extern int |