On Mon, Mar 23, 2020 at 4:11 PM Joe Perches <joe@xxxxxxxxxxx> wrote: > > On Mon, 2020-03-23 at 19:48 +0100, Marcel Holtmann wrote: > > Hi Joe, > > Hello Marcel. > > > > > > This adds a bit mask of driver_info for Microsoft vendor extension and > > > > > indicates the support for Intel 9460/9560 and 9160/9260. See > > > > > https://docs.microsoft.com/en-us/windows-hardware/drivers/bluetooth/ > > > > > microsoft-defined-bluetooth-hci-commands-and-events for more information > > > > > about the extension. This was verified with Intel ThunderPeak BT controller > > > > > where msft_vnd_ext_opcode is 0xFC1E. > > > [] > > > > > diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h > > > [] > > > > > @@ -315,6 +315,10 @@ struct hci_dev { > > > > > __u8 ssp_debug_mode; > > > > > __u8 hw_error_code; > > > > > __u32 clock; > > > > > + __u16 msft_vnd_ext_opcode; > > > > > + __u64 msft_vnd_ext_features; > > > > > + __u8 msft_vnd_ext_evt_prefix_len; > > > > > + void *msft_vnd_ext_evt_prefix; > > > > > > msft is just another vendor. > > > > > > If there are to be vendor extensions, this should > > > likely use a blank line above and below and not > > > be prefixed with msft_ > > > > there are other vendors, but all of them are different. So this needs to be prefixed with msft_ actually. But I agree that having empty lines above and below makes it more readable. > > So struct hci_dev should become a clutter > of random vendor extensions? > > Perhaps there should instead be something like > an array of char at the end of the struct and > various vendor specific extensions could be > overlaid on that array or just add a void * > to whatever info that vendors require. I don't particularly like trailing buffers, but I agree we could possibly organize this a little better by with a struct. something like: struct msft_vnd_ext { bool supported; // <-- Clearly calls out if the extension is supported. __u16 msft_vnd_ext_opcode; // <-- Note that this also needs to be provided by the driver. I don't recommend we have this read from the hardware since we just cause an extra redirection that isn't necessary. Ideally, this should come from the usb_table const. __u64 msft_vnd_ext_features; __u8 msft_vnd_ext_evt_prefix_len; void *msft_vnd_ext_evt_prefix; }; And then simply add the struct msft_vnd_ext (and any others) to hci_dev. > > >
