From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
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@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 4 ++--
net/bluetooth/hci_core.c | 17 +++++------------
net/bluetooth/hci_event.c | 18 +++++++++++++++---
net/bluetooth/mgmt.c | 4 ++--
4 files changed, 24 insertions(+), 19 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 7f81791a865d..888911d205dc 100644
--- 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 ee42788aed2c..159783e746c0 100644
--- 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 e1e1ecb4db10..47bd48a597bd 100644
--- 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 e1651c3fc676..bb5b04191253 100644
--- 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);
--
1.9.3
--
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