Bluetooth: Move mgmt event sending out from hci_add_link_key()

There are two callers of hci_add_link_key(). The first one is the HCI
Link Key Notification event and the second one the mgmt code that
receives a list of link keys from user space. Previously we've had the
hci_add_link_key() function being responsible for also emitting a mgmt
signal but for the latter use case this should not happen. Because of
this a rather awkward new_key paramter has been passed to the function.

This patch moves the mgmt event sending out from the hci_add_link_key()
function, thereby making the code a bit more understandable.

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

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 7f81791..888911d 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -860,8 +860,8 @@ void hci_uuids_clear(struct hci_dev *hdev);
 void hci_link_keys_clear(struct hci_dev *hdev);
 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
-                                 int new_key, bdaddr_t *bdaddr, u8 *val,
-                                 u8 type, u8 pin_len);
+                                 bdaddr_t *bdaddr, u8 *val, u8 type,
+                                 u8 pin_len, bool *persistent);
 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, __le64 rand,
                             bool master);
 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ee42788..159783e 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3002,12 +3002,11 @@ struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 }
 
 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
-                                 int new_key, bdaddr_t *bdaddr, u8 *val,
-                                 u8 type, u8 pin_len)
+                                 bdaddr_t *bdaddr, u8 *val, u8 type,
+                                 u8 pin_len, bool *persistent)
 {
        struct link_key *key, *old_key;
        u8 old_key_type;
-       bool persistent;
 
        old_key = hci_find_link_key(hdev, bdaddr);
        if (old_key) {
@@ -3042,15 +3041,9 @@ struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
        else
                key->type = type;
 
-       if (!new_key)
-               return key;
-
-       persistent = hci_persistent_key(hdev, conn, type, old_key_type);
-
-       mgmt_new_link_key(hdev, key, persistent);
-
-       if (conn)
-               conn->flush_key = !persistent;
+       if (persistent)
+               *persistent = hci_persistent_key(hdev, conn, type,
+                                                old_key_type);
 
        return key;
 }

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index e1e1ecb..47bd48a 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3111,6 +3111,8 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 {
        struct hci_ev_link_key_notify *ev = (void *) skb->data;
        struct hci_conn *conn;
+       struct link_key *key;
+       bool persistent;
        u8 pin_len = 0;
 
        BT_DBG("%s", hdev->name);
@@ -3129,10 +3131,20 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
                hci_conn_drop(conn);
        }
 
-       if (test_bit(HCI_MGMT, &hdev->dev_flags))
-               hci_add_link_key(hdev, conn, 1, &ev->bdaddr, ev->link_key,
-                                ev->key_type, pin_len);
+       if (!test_bit(HCI_MGMT, &hdev->dev_flags))
+               goto unlock;
+
+       key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
+                               ev->key_type, pin_len, &persistent);
+       if (!key)
+               goto unlock;
+
+       mgmt_new_link_key(hdev, key, persistent);
 
+       if (conn)
+               conn->flush_key = !persistent;
+
+unlock:
        hci_dev_unlock(hdev);
 }
 

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e1651c3..bb5b041 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2424,8 +2424,8 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
        for (i = 0; i < key_count; i++) {
                struct mgmt_link_key_info *key = &cp->keys[i];
 
-               hci_add_link_key(hdev, NULL, 0, &key->addr.bdaddr, key->val,
-                                key->type, key->pin_len);
+               hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
+                                key->type, key->pin_len, NULL);
        }
 
        cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0);