static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
{
/* MBIM backwards compatible function? */
cdc_ncm_select_altsetting(dev, intf);
if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
return -ENODEV;
/* NCM data altsetting is always 1 */
return cdc_ncm_bind_common(dev, intf, 1);
}
static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)
{
struct cdc_ncm_ctx *ctx;
struct usb_driver *subdriver = ERR_PTR(-ENODEV);
int ret = -ENODEV;
u8 data_altsetting = 1;
struct cdc_mbim_state *info = (void *)&dev->data;
/* should we change control altsetting on a NCM/MBIM function? */
if (cdc_ncm_select_altsetting(intf) == CDC_NCM_COMM_ALTSETTING_MBIM) {
data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM;
ret = cdc_mbim_set_ctrlalt(dev, intf, CDC_NCM_COMM_ALTSETTING_MBIM);
if (ret)
goto err;
ret = -ENODEV;
}
/* we will hit this for NCM/MBIM functions if prefer_mbim is false */
if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
goto err;
ret = cdc_ncm_bind_common(dev, intf, data_altsetting, dev->driver_info->data);
if (ret)
goto err;
ctx = info->ctx;
/* The MBIM descriptor and the status endpoint are required */
if (ctx->mbim_desc && dev->status)
subdriver = usb_cdc_wdm_register(ctx->control,
&dev->status->desc,
le16_to_cpu(ctx->mbim_desc->wMaxControlMessage),
cdc_mbim_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
cdc_ncm_unbind(dev, intf);
goto err;
}
/* can't let usbnet use the interrupt endpoint */
dev->status = NULL;
info->subdriver = subdriver;
/* MBIM cannot do ARP */
dev->net->flags |= IFF_NOARP;
/* no need to put the VLAN tci in the packet headers */
dev->net->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_FILTER;
/* monitor VLAN additions and removals */
dev->net->netdev_ops = &cdc_mbim_netdev_ops;
err:
return ret;
}
static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
/* The MBIM spec defines a NCM compatible default altsetting,
* which we may have matched:
*
* "Functions that implement both NCM 1.0 and MBIM (an
* “NCM/MBIM function”) according to this recommendation
* shall provide two alternate settings for the
* Communication Interface. Alternate setting 0, and the
* associated class and endpoint descriptors, shall be
* constructed according to the rules given for the
* Communication Interface in section 5 of [USBNCM10].
* Alternate setting 1, and the associated class and
* endpoint descriptors, shall be constructed according to
* the rules given in section 6 (USB Device Model) of this
* specification."
*
* Do not bind to such interfaces, allowing cdc_mbim to handle
* them
*/
#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM)
if ((intf->num_altsetting == 2) &&
!usb_set_interface(dev->udev,
intf->cur_altsetting->desc.bInterfaceNumber,
CDC_NCM_COMM_ALTSETTING_MBIM)) {
if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
return -ENODEV;
else
usb_set_interface(dev->udev,
intf->cur_altsetting->desc.bInterfaceNumber,
CDC_NCM_COMM_ALTSETTING_NCM);
}
#endif
/* NCM data altsetting is always 1 */
ret = cdc_ncm_bind_common(dev, intf, 1);
/*
* We should get an event when network connection is "connected" or
* "disconnected". Set network connection in "disconnected" state
* (carrier is OFF) during attach, so the IP network stack does not
* start IPv6 negotiation and more.
*/
netif_carrier_off(dev->net);
return ret;
}
static int huawei_cdc_ncm_bind(struct usbnet *usbnet_dev,
struct usb_interface *intf)
{
struct cdc_ncm_ctx *ctx;
struct usb_driver *subdriver = ERR_PTR(-ENODEV);
int ret = -ENODEV;
struct huawei_cdc_ncm_state *drvstate = (void *)&usbnet_dev->data;
int drvflags = 0;
/* altsetting should always be 1 for NCM devices - so we hard-coded
* it here. Some huawei devices will need the NDP part of the NCM package to
* be at the end of the frame.
*/
drvflags |= CDC_NCM_FLAG_NDP_TO_END;
ret = cdc_ncm_bind_common(usbnet_dev, intf, 1, drvflags);
if (ret)
goto err;
ctx = drvstate->ctx;
if (usbnet_dev->status)
/* The wMaxCommand buffer must be big enough to hold
* any message from the modem. Experience has shown
* that some replies are more than 256 bytes long
*/
subdriver = usb_cdc_wdm_register(ctx->control,
&usbnet_dev->status->desc,
1024, /* wMaxCommand */
huawei_cdc_ncm_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
cdc_ncm_unbind(usbnet_dev, intf);
goto err;
}
/* Prevent usbnet from using the status descriptor */
usbnet_dev->status = NULL;
drvstate->subdriver = subdriver;
err:
return ret;
}
static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)
{
struct cdc_ncm_ctx *ctx;
struct usb_driver *subdriver = ERR_PTR(-ENODEV);
int ret = -ENODEV;
u8 data_altsetting = cdc_ncm_select_altsetting(dev, intf);
struct cdc_mbim_state *info = (void *)&dev->data;
/* Probably NCM, defer for cdc_ncm_bind */
if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
goto err;
ret = cdc_ncm_bind_common(dev, intf, data_altsetting);
if (ret)
goto err;
ctx = info->ctx;
/* The MBIM descriptor and the status endpoint are required */
if (ctx->mbim_desc && dev->status)
subdriver = usb_cdc_wdm_register(ctx->control,
&dev->status->desc,
le16_to_cpu(ctx->mbim_desc->wMaxControlMessage),
cdc_mbim_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
cdc_ncm_unbind(dev, intf);
goto err;
}
/* can't let usbnet use the interrupt endpoint */
dev->status = NULL;
info->subdriver = subdriver;
/* MBIM cannot do ARP */
dev->net->flags |= IFF_NOARP;
/* no need to put the VLAN tci in the packet headers */
dev->net->features |= NETIF_F_HW_VLAN_CTAG_TX;
err:
return ret;
}
static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
/* MBIM backwards compatible function? */
cdc_ncm_select_altsetting(dev, intf);
if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
return -ENODEV;
/* NCM data altsetting is always 1 */
ret = cdc_ncm_bind_common(dev, intf, 1);
/*
* We should get an event when network connection is "connected" or
* "disconnected". Set network connection in "disconnected" state
* (carrier is OFF) during attach, so the IP network stack does not
* start IPv6 negotiation and more.
*/
netif_carrier_off(dev->net);
return ret;
}
static int huawei_cdc_ncm_bind(struct usbnet *usbnet_dev,
struct usb_interface *intf)
{
struct cdc_ncm_ctx *ctx;
struct usb_driver *subdriver = ERR_PTR(-ENODEV);
int ret = -ENODEV;
struct huawei_cdc_ncm_state *drvstate = (void *)&usbnet_dev->data;
/* altsetting should always be 1 for NCM devices - so we hard-coded
* it here
*/
ret = cdc_ncm_bind_common(usbnet_dev, intf, 1);
if (ret)
goto err;
ctx = drvstate->ctx;
if (usbnet_dev->status)
/* CDC-WMC r1.1 requires wMaxCommand to be "at least 256
* decimal (0x100)"
*/
subdriver = usb_cdc_wdm_register(ctx->control,
&usbnet_dev->status->desc,
256, /* wMaxCommand */
huawei_cdc_ncm_wdm_manage_power);
if (IS_ERR(subdriver)) {
ret = PTR_ERR(subdriver);
cdc_ncm_unbind(usbnet_dev, intf);
goto err;
}
/* Prevent usbnet from using the status descriptor */
usbnet_dev->status = NULL;
drvstate->subdriver = subdriver;
err:
return ret;
}
