Bluetooth: Add support for experimental features configuration

To enable platform specific experimental features, introduce this new set of
management commands and events.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index e5bc1df..16ab6ce 100644 (file)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -258,6 +258,7 @@ enum {
        HCI_MGMT_DEV_CLASS_EVENTS,
        HCI_MGMT_LOCAL_NAME_EVENTS,
        HCI_MGMT_OOB_DATA_EVENTS,
+       HCI_MGMT_EXP_FEATURE_EVENTS,
 };
 
 /*

diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index 9d4d87c..16e0d87 100644 (file)
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -681,6 +681,27 @@ struct mgmt_rp_read_security_info {
        __u8     sec[];
 } __packed;
 
+#define MGMT_OP_READ_EXP_FEATURES_INFO 0x0049
+#define MGMT_READ_EXP_FEATURES_INFO_SIZE 0
+struct mgmt_rp_read_exp_features_info {
+       __le16 feature_count;
+       struct {
+               __u8   uuid[16];
+               __le32 flags;
+       } features[];
+} __packed;
+
+#define MGMT_OP_SET_EXP_FEATURE                0x004a
+struct mgmt_cp_set_exp_feature {
+       __u8   uuid[16];
+       __u8   param[];
+} __packed;
+#define MGMT_SET_EXP_FEATURE_SIZE      16
+struct mgmt_rp_set_exp_feature {
+       __u8   uuid[16];
+       __le32 flags;
+} __packed;
+
 #define MGMT_EV_CMD_COMPLETE           0x0001
 struct mgmt_ev_cmd_complete {
        __le16  opcode;
@@ -906,3 +927,9 @@ struct mgmt_ev_ext_info_changed {
 struct mgmt_ev_phy_configuration_changed {
        __le32  selected_phys;
 } __packed;
+
+#define MGMT_EV_EXP_FEATURE_CHANGED    0x0027
+struct mgmt_ev_exp_feature_changed {
+       __u8    uuid[16];
+       __le32  flags;
+} __packed;

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 78cf72b..3c6be70 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -109,6 +109,8 @@ static const u16 mgmt_commands[] = {
        MGMT_OP_SET_BLOCKED_KEYS,
        MGMT_OP_SET_WIDEBAND_SPEECH,
        MGMT_OP_READ_SECURITY_INFO,
+       MGMT_OP_READ_EXP_FEATURES_INFO,
+       MGMT_OP_SET_EXP_FEATURE,
 };
 
 static const u16 mgmt_events[] = {
@@ -148,6 +150,7 @@ static const u16 mgmt_events[] = {
        MGMT_EV_ADVERTISING_REMOVED,
        MGMT_EV_EXT_INFO_CHANGED,
        MGMT_EV_PHY_CONFIGURATION_CHANGED,
+       MGMT_EV_EXP_FEATURE_CHANGED,
 };
 
 static const u16 mgmt_untrusted_commands[] = {
@@ -158,6 +161,7 @@ static const u16 mgmt_untrusted_commands[] = {
        MGMT_OP_READ_EXT_INDEX_LIST,
        MGMT_OP_READ_EXT_INFO,
        MGMT_OP_READ_SECURITY_INFO,
+       MGMT_OP_READ_EXP_FEATURES_INFO,
 };
 
 static const u16 mgmt_untrusted_events[] = {
@@ -172,6 +176,7 @@ static const u16 mgmt_untrusted_events[] = {
        MGMT_EV_EXT_INDEX_ADDED,
        MGMT_EV_EXT_INDEX_REMOVED,
        MGMT_EV_EXT_INFO_CHANGED,
+       MGMT_EV_EXP_FEATURE_CHANGED,
 };
 
 #define CACHE_TIMEOUT  msecs_to_jiffies(2 * 1000)
@@ -3710,6 +3715,53 @@ static int read_security_info(struct sock *sk, struct hci_dev *hdev,
                                 rp, sizeof(*rp) + sec_len);
 }
 
+static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
+                                 void *data, u16 data_len)
+{
+       char buf[42];
+       struct mgmt_rp_read_exp_features_info *rp = (void *)buf;
+       u16 idx = 0;
+
+       bt_dev_dbg(hdev, "sock %p", sk);
+
+       memset(&buf, 0, sizeof(buf));
+
+       rp->feature_count = cpu_to_le16(idx);
+
+       /* After reading the experimental features information, enable
+        * the events to update client on any future change.
+        */
+       hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
+
+       return mgmt_cmd_complete(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
+                                MGMT_OP_READ_EXP_FEATURES_INFO,
+                                0, rp, sizeof(*rp) + (20 * idx));
+}
+
+static int set_exp_feature(struct sock *sk, struct hci_dev *hdev,
+                          void *data, u16 data_len)
+{
+       struct mgmt_cp_set_exp_feature *cp = data;
+       struct mgmt_rp_set_exp_feature rp;
+
+       bt_dev_dbg(hdev, "sock %p", sk);
+
+       if (!memcmp(cp->uuid, ZERO_KEY, 16)) {
+               memset(rp.uuid, 0, 16);
+               rp.flags = cpu_to_le32(0);
+
+               hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
+
+               return mgmt_cmd_complete(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
+                                        MGMT_OP_SET_EXP_FEATURE, 0,
+                                        &rp, sizeof(rp));
+       }
+
+       return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
+                              MGMT_OP_SET_EXP_FEATURE,
+                              MGMT_STATUS_NOT_SUPPORTED);
+}
+
 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
                                         u16 opcode, struct sk_buff *skb)
 {
@@ -7152,6 +7204,12 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
        { set_wideband_speech,     MGMT_SETTING_SIZE },
        { read_security_info,      MGMT_READ_SECURITY_INFO_SIZE,
                                                HCI_MGMT_UNTRUSTED },
+       { read_exp_features_info,  MGMT_READ_EXP_FEATURES_INFO_SIZE,
+                                               HCI_MGMT_UNTRUSTED |
+                                               HCI_MGMT_HDEV_OPTIONAL },
+       { set_exp_feature,         MGMT_SET_EXP_FEATURE_SIZE,
+                                               HCI_MGMT_VAR_LEN |
+                                               HCI_MGMT_HDEV_OPTIONAL },
 };
 
 void mgmt_index_added(struct hci_dev *hdev)