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Patch for QMI WWAN Driver to support the Quectel EG95 device.
==================================================================================
--- a/drivers/net/usb/qmi_wwan.c 2019-06-25 18:33:52.000000000 +0300
+++ b/drivers/net/usb/qmi_wwan.c 2019-06-25 18:38:06.858767868 +0300
@@ -224,6 +224,23 @@
return 1;
}
+struct sk_buff *qmi_wwan_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
+{
+ if (dev->udev->descriptor.idVendor != cpu_to_le16(0x2c7c))
+ return skb;
+
+ // Skip Ethernet header from message
+ if (skb_pull(skb, ETH_HLEN)) {
+ return skb;
+ } else {
+ dev_err(&dev->intf->dev, "Packet Dropped ");
+ }
+
+ // Filter the packet out, release it
+ dev_kfree_skb_any(skb);
+ return NULL;
+}
+
/* very simplistic detection of IPv4 or IPv6 headers */
static bool possibly_iphdr(const char *data)
{
@@ -445,6 +462,20 @@
}
dev->net->netdev_ops = &qmi_wwan_netdev_ops;
dev->net->sysfs_groups[0] = &qmi_wwan_sysfs_attr_group;
+
+ if (dev->udev->descriptor.idVendor == cpu_to_le16(0x2c7c)) {
+ dev_info(&intf->dev, "Quectel EG95 work on RawIP mode\n");
+ dev->net->flags |= IFF_NOARP;
+
+ usb_control_msg(
+ interface_to_usbdev(intf),
+ usb_sndctrlpipe(interface_to_usbdev(intf), 0),
+ 0x22, //USB_CDC_REQ_SET_CONTROL_LINE_STATE
+ 0x21, //USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE
+ 1, //active CDC DTR
+ intf->cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0, 100);
+ }
err:
return status;
}
@@ -536,6 +567,7 @@
.unbind = qmi_wwan_unbind,
.manage_power = qmi_wwan_manage_power,
.rx_fixup = qmi_wwan_rx_fixup,
+ .tx_fixup = qmi_wwan_tx_fixup,
};
static const struct driver_info qmi_wwan_info_quirk_dtr = {
@@ -545,6 +577,7 @@
.unbind = qmi_wwan_unbind,
.manage_power = qmi_wwan_manage_power,
.rx_fixup = qmi_wwan_rx_fixup,
+ .tx_fixup = qmi_wwan_tx_fixup,
.data = QMI_WWAN_QUIRK_DTR,
};
@@ -947,6 +980,7 @@
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */
{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)}, /* Quectel BG96 */
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0306, 4)}, /* Quectel EP06 Mini PCIe */
+ {QMI_FIXED_INTF(0x2c7c, 0x0195, 4)}, /* Quectel EG95 */
/* 4. Gobi 1000 devices */
{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
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