Hi Jaganath,
> This patch implements Set Ext Adv data and Set Ext Scan rsp data
> if controller support extended advertising.
>
> Currently the operation is set as Complete data and fragment
> preference is set as no fragment
>
> Signed-off-by: Jaganath Kanakkassery <jaganathx.kanakkassery@xxxxxxxxx>
> ---
> include/net/bluetooth/hci.h | 29 +++++++
> include/net/bluetooth/hci_core.h | 6 +-
> net/bluetooth/hci_core.c | 8 +-
> net/bluetooth/hci_request.c | 177 ++++++++++++++++++++++++++++++++-------
> net/bluetooth/mgmt.c | 18 +++-
> 5 files changed, 201 insertions(+), 37 deletions(-)
>
> diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
> index dd6b9cb..997995d 100644
> --- a/include/net/bluetooth/hci.h
> +++ b/include/net/bluetooth/hci.h
> @@ -1587,6 +1587,30 @@ struct hci_cp_ext_adv_set {
> __u8 max_events;
> } __packed;
>
> +#define HCI_MAX_EXT_AD_LENGTH 251
> +
> +#define HCI_OP_LE_SET_EXT_ADV_DATA 0x2037
> +struct hci_cp_le_set_ext_adv_data {
> + __u8 handle;
> + __u8 operation;
> + __u8 fragment_preference;
> + __u8 length;
> + __u8 data[HCI_MAX_EXT_AD_LENGTH];
> +} __packed;
> +
> +#define HCI_OP_LE_SET_EXT_SCAN_RSP_DATA 0x2038
> +struct hci_cp_le_set_ext_scan_rsp_data {
> + __u8 handle;
> + __u8 operation;
> + __u8 fragment_preference;
> + __u8 length;
> + __u8 data[HCI_MAX_EXT_AD_LENGTH];
> +} __packed;
> +
> +#define LE_SET_ADV_DATA_OP_COMPLETE 0x03
> +
> +#define LE_SET_ADV_DATA_NO_FRAG 0x01
> +
> /* ---- HCI Events ---- */
> #define HCI_EV_INQUIRY_COMPLETE 0x01
>
> @@ -1984,6 +2008,11 @@ struct hci_ev_le_conn_complete {
> #define LE_LEGACY_SCAN_RSP_ADV 0x001b
> #define LE_LEGACY_SCAN_RSP_ADV_SCAN 0x001a
>
> +/* Extended Advertising event types */
> +#define LE_EXT_ADV_NON_CONN_IND 0x0000
> +#define LE_EXT_ADV_CONN_IND 0x0001
> +#define LE_EXT_ADV_SCAN_IND 0x0002
> +
> #define ADDR_LE_DEV_PUBLIC 0x00
> #define ADDR_LE_DEV_RANDOM 0x01
>
> diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
> index 2abeabb..610172a 100644
> --- a/include/net/bluetooth/hci_core.h
> +++ b/include/net/bluetooth/hci_core.h
> @@ -166,9 +166,9 @@ struct adv_info {
> __u16 remaining_time;
> __u16 duration;
> __u16 adv_data_len;
> - __u8 adv_data[HCI_MAX_AD_LENGTH];
> + __u8 adv_data[HCI_MAX_EXT_AD_LENGTH];
> __u16 scan_rsp_len;
> - __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
> + __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
I don’t think you can do it this way. The legacy advertising is its own instance. So you need extra adv_data_ext[] field here since you need to track both. I would need to double check if some ext adv set number is magically matched to the legacy advertising, but I do not remember that.
Even if you use the new HCI commands to set up legacy advertising, the length does not magically increase.
Frankly I would like to see first that we use the new HCI commands to set up legacy advertising. That way we improve using multiple legacy advertising instances at the same time via controller offload and avoid rotation. That part should be figured out first and implemented before adding the extra length of PHY details.
And btw. we need mgmt-tester patches to test the correct behavior. The advertising API is rather complex and powerful.
Regards
Marcel
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