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Diffstat (limited to 'net/bluetooth/mgmt.c')
-rw-r--r--net/bluetooth/mgmt.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 05370e76feb0..dc8e428050d9 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -102,6 +102,7 @@ static const u16 mgmt_commands[] = {
MGMT_OP_READ_ADV_FEATURES,
MGMT_OP_ADD_ADVERTISING,
MGMT_OP_REMOVE_ADVERTISING,
+ MGMT_OP_GET_ADV_SIZE_INFO,
};
static const u16 mgmt_events[] = {
@@ -7059,6 +7060,62 @@ unlock:
return err;
}
+static u8 tlv_data_max_len(u32 adv_flags, bool is_adv_data)
+{
+ u8 max_len = HCI_MAX_AD_LENGTH;
+
+ if (is_adv_data) {
+ if (adv_flags & (MGMT_ADV_FLAG_DISCOV |
+ MGMT_ADV_FLAG_LIMITED_DISCOV |
+ MGMT_ADV_FLAG_MANAGED_FLAGS))
+ max_len -= 3;
+
+ if (adv_flags & MGMT_ADV_FLAG_TX_POWER)
+ max_len -= 3;
+ }
+
+ return max_len;
+}
+
+static int get_adv_size_info(struct sock *sk, struct hci_dev *hdev,
+ void *data, u16 data_len)
+{
+ struct mgmt_cp_get_adv_size_info *cp = data;
+ struct mgmt_rp_get_adv_size_info rp;
+ u32 flags, supported_flags;
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!lmp_le_capable(hdev))
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_ADV_SIZE_INFO,
+ MGMT_STATUS_REJECTED);
+
+ if (cp->instance < 1 || cp->instance > HCI_MAX_ADV_INSTANCES)
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_ADV_SIZE_INFO,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ flags = __le32_to_cpu(cp->flags);
+
+ /* The current implementation only supports a subset of the specified
+ * flags.
+ */
+ supported_flags = get_supported_adv_flags(hdev);
+ if (flags & ~supported_flags)
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_ADV_SIZE_INFO,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ rp.instance = cp->instance;
+ rp.flags = cp->flags;
+ rp.max_adv_data_len = tlv_data_max_len(flags, true);
+ rp.max_scan_rsp_len = tlv_data_max_len(flags, false);
+
+ err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_ADV_SIZE_INFO,
+ MGMT_STATUS_SUCCESS, &rp, sizeof(rp));
+
+ return err;
+}
+
static const struct hci_mgmt_handler mgmt_handlers[] = {
{ NULL }, /* 0x0000 (no command) */
{ read_version, MGMT_READ_VERSION_SIZE,
@@ -7146,6 +7203,7 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
{ add_advertising, MGMT_ADD_ADVERTISING_SIZE,
HCI_MGMT_VAR_LEN },
{ remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE },
+ { get_adv_size_info, MGMT_GET_ADV_SIZE_INFO_SIZE },
};
void mgmt_index_added(struct hci_dev *hdev)