On Wed, Sep 24 2014, Heiko Schocher <hs@xxxxxxx> wrote: > use the values for RNDIS over Ethernet as defined in > http://www.usb.org/developers/defined_class > (search for RDNIS): > > - baseclass: 0xef (miscellaneous) > - subclass: 0x04 > - protocol: 0x01 > > with this setings the file in Documentation/usb/linux.inf is > obsolete. > > Signed-off-by: Heiko Schocher <hs@xxxxxxx> > > --- > > Cc: Felipe Balbi <balbi@xxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxx> > Cc: linux-usb@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Cc: Oliver Neukum <oliver@xxxxxxxxxxx> > Cc: netdev@xxxxxxxxxxxxxxx > Cc: linux-api@xxxxxxxxxxxxxxx > Cc: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> > Cc: Michal Nazarewicz <mina86@xxxxxxxxxx> > Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Cc: Macpaul Lin <macpaul@xxxxxxxxx> > > Tested with the "USB Compliance test suite which runs Windows", see: > http://www.usb.org/developers/tools/usb20_tools/#usb20cv > > drivers/net/usb/cdc_ether.c | 6 +++--- > drivers/usb/core/generic.c | 6 +++--- > drivers/usb/gadget/function/f_rndis.c | 6 +++--- > include/uapi/linux/usb/cdc.h | 3 +++ > 4 files changed, 12 insertions(+), 9 deletions(-) > > diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c > index 2a32d91..9c216c2 100644 > --- a/drivers/net/usb/cdc_ether.c > +++ b/drivers/net/usb/cdc_ether.c > @@ -35,9 +35,9 @@ > > static int is_rndis(struct usb_interface_descriptor *desc) > { > - return (desc->bInterfaceClass == USB_CLASS_COMM && > - desc->bInterfaceSubClass == 2 && > - desc->bInterfaceProtocol == 0xff); > + return (desc->bInterfaceClass == USB_CLASS_MISC && > + desc->bInterfaceSubClass == USB_CDC_SUBCLASS_RNDIS && > + desc->bInterfaceProtocol == USB_CDC_RNDIS_PROTO_ETH); > } Does that mean that new kernels will stop working with old RNDIs gadgets because they stop recognising them as RNDIS? I feel like this function should accept both, i.e.: return (desc->bInterfaceClass == USB_CLASS_COMM && desc->bInterfaceSubClass == 2 && desc->bInterfaceProtocol == 0xff) || (desc->bInterfaceClass == USB_CLASS_MISC && desc->bInterfaceSubClass == USB_CDC_SUBCLASS_RNDIS && desc->bInterfaceProtocol == USB_CDC_RNDIS_PROTO_ETH); > > static int is_activesync(struct usb_interface_descriptor *desc) > diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c > index 358ca8d..a2a4e05 100644 > --- a/drivers/usb/core/generic.c > +++ b/drivers/usb/core/generic.c > @@ -28,9 +28,9 @@ static inline const char *plural(int n) > > static int is_rndis(struct usb_interface_descriptor *desc) > { > - return desc->bInterfaceClass == USB_CLASS_COMM > - && desc->bInterfaceSubClass == 2 > - && desc->bInterfaceProtocol == 0xff; > + return desc->bInterfaceClass == USB_CLASS_MISC > + && desc->bInterfaceSubClass == USB_CDC_SUBCLASS_RNDIS > + && desc->bInterfaceProtocol == USB_CDC_RNDIS_PROTO_ETH; > } Ditto. > > static int is_activesync(struct usb_interface_descriptor *desc) > diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c > index ddb09dc..cc06046 100644 > --- a/drivers/usb/gadget/function/f_rndis.c > +++ b/drivers/usb/gadget/function/f_rndis.c > @@ -117,9 +117,9 @@ static struct usb_interface_descriptor rndis_control_intf = { > /* .bInterfaceNumber = DYNAMIC */ > /* status endpoint is optional; this could be patched later */ > .bNumEndpoints = 1, > - .bInterfaceClass = USB_CLASS_COMM, > - .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, > - .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, > + .bInterfaceClass = USB_CLASS_MISC, > + .bInterfaceSubClass = USB_CDC_SUBCLASS_RNDIS, > + .bInterfaceProtocol = USB_CDC_RNDIS_PROTO_ETH, > /* .iInterface = DYNAMIC */ > }; > > diff --git a/include/uapi/linux/usb/cdc.h b/include/uapi/linux/usb/cdc.h > index b6a9cdd..8e8fc85 100644 > --- a/include/uapi/linux/usb/cdc.h > +++ b/include/uapi/linux/usb/cdc.h > @@ -12,6 +12,7 @@ > #include <linux/types.h> > > #define USB_CDC_SUBCLASS_ACM 0x02 > +#define USB_CDC_SUBCLASS_RNDIS 0x04 > #define USB_CDC_SUBCLASS_ETHERNET 0x06 > #define USB_CDC_SUBCLASS_WHCM 0x08 > #define USB_CDC_SUBCLASS_DMM 0x09 > @@ -31,6 +32,8 @@ > #define USB_CDC_ACM_PROTO_AT_CDMA 6 > #define USB_CDC_ACM_PROTO_VENDOR 0xff > > +#define USB_CDC_RNDIS_PROTO_ETH 1 > + > #define USB_CDC_PROTO_EEM 7 > > #define USB_CDC_NCM_PROTO_NTB 1 -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +--<mpn@xxxxxxxxxx>--<xmpp:mina86@xxxxxxxxxx>--ooO--(_)--Ooo-- -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
