From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Add general HCI callback implementation. Can be used for executing
HCI commands from A2MP protocol.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 18 ++++++++++++
net/bluetooth/hci_core.c | 57 ++++++++++++++++++++++++++++++++++++++
2 files changed, 75 insertions(+), 0 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 039d8b1..4ee2065 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -125,6 +125,17 @@ struct adv_entry {
u8 bdaddr_type;
};
+struct hci_dev;
+
+struct cb_cmd {
+ struct list_head list;
+ u16 opcode;
+ u8 status;
+ void *opt;
+ void (*cb)(struct hci_dev *hdev, struct cb_cmd *cmd);
+ void (*destructor)(struct cb_cmd *cmd);
+};
+
#define NUM_REASSEMBLY 4
struct hci_dev {
struct list_head list;
@@ -231,6 +242,7 @@ struct hci_dev {
__u16 init_last_cmd;
struct list_head mgmt_pending;
+ struct list_head cb_list;
struct discovery_state discovery;
struct hci_conn_hash conn_hash;
@@ -1029,4 +1041,10 @@ void hci_le_ltk_neg_reply(struct hci_conn *conn);
int hci_do_inquiry(struct hci_dev *hdev, u8 length);
int hci_cancel_inquiry(struct hci_dev *hdev);
+struct cb_cmd *hci_find_cb(struct hci_dev *hdev, __u16 opcode);
+int hci_cmd_cb(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param,
+ void (*cb)(struct hci_dev *hdev, struct cb_cmd *cmd), void *opt,
+ void (*destructor)(struct cb_cmd *cmd));
+void hci_remove_cb(struct cb_cmd *cmd);
+
#endif /* __HCI_CORE_H */
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 95ece9d..5aefb61 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1678,6 +1678,8 @@ int hci_register_dev(struct hci_dev *hdev)
INIT_LIST_HEAD(&hdev->mgmt_pending);
+ INIT_LIST_HEAD(&hdev->cb_list);
+
INIT_LIST_HEAD(&hdev->blacklist);
INIT_LIST_HEAD(&hdev->uuids);
@@ -2081,6 +2083,61 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
return 0;
}
+void hci_add_cb(struct hci_dev *hdev, __u16 opcode,
+ void (*cb)(struct hci_dev *hdev, struct cb_cmd *cmd),
+ void *opt, void (*destructor)(struct cb_cmd *cmd))
+{
+ struct cb_cmd *cmd;
+
+ cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
+ if (!cmd)
+ return;
+
+ cmd->cb = cb;
+ cmd->opcode = opcode;
+ cmd->opt = opt;
+ cmd->status = 0;
+
+ if (destructor)
+ cmd->destructor = destructor;
+
+ list_add(&cmd->list, &hdev->cb_list);
+}
+
+struct cb_cmd *hci_find_cb(struct hci_dev *hdev, __u16 opcode)
+{
+ struct cb_cmd *cmd;
+
+ list_for_each_entry(cmd, &hdev->cb_list, list)
+ if (cmd->opcode == opcode)
+ return cmd;
+
+ return NULL;
+}
+
+void hci_remove_cb(struct cb_cmd *cmd)
+{
+ list_del(&cmd->list);
+
+ if (cmd->destructor) {
+ cmd->destructor(cmd);
+ } else {
+ kfree(cmd->opt);
+ kfree(cmd);
+ }
+}
+
+/* Send HCI command with callback */
+int hci_cmd_cb(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param,
+ void (*cb)(struct hci_dev *hdev, struct cb_cmd *cmd),
+ void *opt, void (*destructor)(struct cb_cmd *cmd))
+{
+ if (cb)
+ hci_add_cb(hdev, opcode, cb, opt, destructor);
+
+ return hci_send_cmd(hdev, opcode, plen, param);
+}
+
/* Get data from the previously sent command */
void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
{
--
1.7.4.1
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
