Hi Kiran,
> Allow user level process to enable / disable codec offload
> feature through mgmt interface. By default offload codec feature
> is disabled.
>
> Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
> Reviewed-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
> Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@xxxxxxxxx>
> ---
> changes in v11:
> - Remove Kconfig
>
> include/net/bluetooth/hci.h | 1 +
> net/bluetooth/mgmt.c | 98 ++++++++++++++++++++++++++++++++++++-
> net/bluetooth/sco.c | 10 ++++
> 3 files changed, 108 insertions(+), 1 deletion(-)
>
> diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
> index 8af8892e18bc..dbbbb974ade6 100644
> --- a/include/net/bluetooth/hci.h
> +++ b/include/net/bluetooth/hci.h
> @@ -330,6 +330,7 @@ enum {
> HCI_ENABLE_LL_PRIVACY,
> HCI_CMD_PENDING,
> HCI_FORCE_NO_MITM,
> + HCI_OFFLOAD_CODECS_ENABLED,
>
> __HCI_NUM_FLAGS,
> };
> diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
> index 3663f880df11..eb10f9597837 100644
> --- a/net/bluetooth/mgmt.c
> +++ b/net/bluetooth/mgmt.c
> @@ -3791,6 +3791,12 @@ static const u8 debug_uuid[16] = {
> };
> #endif
>
> +/* a6695ace-ee7f-4fb9-881a-5fac66c629af */
> +static const u8 offload_codecs_uuid[16] = {
> + 0xaf, 0x29, 0xc6, 0x66, 0xac, 0x5f, 0x1a, 0x88,
> + 0xb9, 0x4f, 0x7f, 0xee, 0xce, 0x5a, 0x69, 0xa6,
> +};
> +
> /* 671b10b5-42c0-4696-9227-eb28d1b049d6 */
> static const u8 simult_central_periph_uuid[16] = {
> 0xd6, 0x49, 0xb0, 0xd1, 0x28, 0xeb, 0x27, 0x92,
> @@ -3806,7 +3812,7 @@ static const u8 rpa_resolution_uuid[16] = {
> static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
> void *data, u16 data_len)
> {
> - char buf[62]; /* Enough space for 3 features */
> + char buf[82]; /* Enough space for 4 features: 2 + 20 * 4 */
> struct mgmt_rp_read_exp_features_info *rp = (void *)buf;
> u16 idx = 0;
> u32 flags;
> @@ -3850,6 +3856,26 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
> idx++;
> }
>
> + if (hdev) {
> + if (hdev->get_data_path_id) {
> + /* BIT(0): indicating if offload codecs are
> + * supported by controller.
> + */
> + flags = BIT(0);
> +
> + /* BIT(1): indicating if codec offload feature
> + * is enabled.
> + */
> + if (hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED))
> + flags |= BIT(1);
> + } else {
> + flags = 0;
> + }
> + memcpy(rp->features[idx].uuid, offload_codecs_uuid, 16);
> + rp->features[idx].flags = cpu_to_le32(flags);
> + idx++;
> + }
> +
> rp->feature_count = cpu_to_le16(idx);
>
> /* After reading the experimental features information, enable
> @@ -3892,6 +3918,21 @@ static int exp_debug_feature_changed(bool enabled, struct sock *skip)
> }
> #endif
>
> +static int exp_offload_codec_feature_changed(bool enabled, struct sock *skip)
> +{
> + struct mgmt_ev_exp_feature_changed ev;
> +
> + BT_INFO("enabled %d", enabled);
> +
> + memset(&ev, 0, sizeof(ev));
> + memcpy(ev.uuid, offload_codecs_uuid, 16);
> + ev.flags = cpu_to_le32(enabled ? BIT(0) : 0);
> +
> + return mgmt_limited_event(MGMT_EV_EXP_FEATURE_CHANGED, NULL,
> + &ev, sizeof(ev),
> + HCI_MGMT_EXP_FEATURE_EVENTS, skip);
> +}
> +
> static int set_exp_feature(struct sock *sk, struct hci_dev *hdev,
> void *data, u16 data_len)
> {
> @@ -4038,6 +4079,61 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev,
> return err;
> }
>
> + if (!memcmp(cp->uuid, offload_codecs_uuid, 16)) {
> + bool val, changed;
> + int err;
> +
> + /* Command requires to use a valid controller index */
> + if (!hdev)
> + return mgmt_cmd_status(sk, MGMT_INDEX_NONE,
> + MGMT_OP_SET_EXP_FEATURE,
> + MGMT_STATUS_INVALID_INDEX);
> +
> + /* Parameters are limited to a single octet */
> + if (data_len != MGMT_SET_EXP_FEATURE_SIZE + 1)
> + return mgmt_cmd_status(sk, hdev->id,
> + MGMT_OP_SET_EXP_FEATURE,
> + MGMT_STATUS_INVALID_PARAMS);
> +
> + /* Only boolean on/off is supported */
> + if (cp->param[0] != 0x00 && cp->param[0] != 0x01)
> + return mgmt_cmd_status(sk, hdev->id,
> + MGMT_OP_SET_EXP_FEATURE,
> + MGMT_STATUS_INVALID_PARAMS);
> +
> + val = !!cp->param[0];
> + changed = (val != hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED));
> +
> + if (!hdev->get_data_path_id) {
> + bt_dev_info(hdev, "offload codecs not supported");
> + return mgmt_cmd_status(sk, hdev->id,
> + MGMT_OP_SET_EXP_FEATURE,
> + MGMT_STATUS_NOT_SUPPORTED);
> + }
> +
> + if (changed) {
> + if (val)
> + hci_dev_set_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED);
> + else
> + hci_dev_clear_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED);
> + }
> +
> + bt_dev_info(hdev, "offload codecs enable %d changed %d",
> + val, changed);
> +
> + memcpy(rp.uuid, offload_codecs_uuid, 16);
> + rp.flags = cpu_to_le32(val ? BIT(0) : 0);
> + hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
> + err = mgmt_cmd_complete(sk, hdev->id,
> + MGMT_OP_SET_EXP_FEATURE, 0,
> + &rp, sizeof(rp));
> +
> + if (changed)
> + exp_offload_codec_feature_changed(val, sk);
> +
> + return err;
> + }
> +
> return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
> MGMT_OP_SET_EXP_FEATURE,
> MGMT_STATUS_NOT_SUPPORTED);
> diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
> index 5ff06ac05fef..ba66e082ba9e 100644
> --- a/net/bluetooth/sco.c
> +++ b/net/bluetooth/sco.c
> @@ -964,6 +964,11 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
> break;
> }
>
> + if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) {
> + err = -EOPNOTSUPP;
> + break;
> + }
> +
> if (!hdev->get_codec_config_data) {
> err = -EOPNOTSUPP;
> break;
> @@ -1160,6 +1165,11 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
> break;
> }
>
> + if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) {
> + err = -EOPNOTSUPP;
> + break;
> + }
> +
> if (!hdev->get_data_path_id) {
> err = -EOPNOTSUPP;
> break;
these two and the flag definition itself need to be a lot earlier in the series.
Regards
Marcel
