This patch adds two helper functions for looking up hci_conn objects
according to its LE state. hci_conn_has_le_pending helper returns
a pending connection (hci_conn in HCI_CONN_LE_SCAN state) if any.
hci_conn_hash_lookup_le_state helper performs a lookup for hci_conn
objects in a given LE state.
Signed-off-by: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 3 +++
net/bluetooth/hci_conn.c | 47 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index c704737..c797717 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -612,6 +612,9 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
int hci_conn_change_link_key(struct hci_conn *conn);
int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
void hci_conn_set_le_state(struct hci_conn *conn, int state);
+struct hci_conn *hci_conn_has_le_pending(struct hci_dev *hdev, bdaddr_t *addr,
+ __u8 type);
+struct hci_conn *hci_conn_hash_lookup_le_state(struct hci_dev *hdev, int state);
void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index d54c2a0..b1a162f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1053,3 +1053,50 @@ void hci_conn_set_le_state(struct hci_conn *conn, int state)
atomic_set(&conn->le_state, state);
}
+
+struct hci_conn *hci_conn_has_le_pending(struct hci_dev *hdev, bdaddr_t *addr,
+ __u8 type)
+{
+ struct hci_conn *conn;
+
+ conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr);
+ if (!conn)
+ return NULL;
+
+ if (conn->state != BT_CONNECT)
+ return NULL;
+
+ if (conn->dst_type != type)
+ return NULL;
+
+ if (atomic_read(&conn->le_state) != HCI_CONN_LE_SCAN)
+ return NULL;
+
+ return conn;
+}
+
+struct hci_conn *hci_conn_hash_lookup_le_state(struct hci_dev *hdev, int state)
+{
+ struct hci_conn_hash *conn_hash = &hdev->conn_hash;
+ struct hci_conn *conn, *ret = NULL;
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(conn, &conn_hash->list, list) {
+ if (conn->type != LE_LINK)
+ continue;
+
+ if (conn->state != BT_CONNECT)
+ continue;
+
+ if (atomic_read(&conn->le_state) != state)
+ continue;
+
+ ret = conn;
+ break;
+ }
+
+ rcu_read_unlock();
+
+ return ret;
+}
--
1.8.1.2
--
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