From 76a68ba0ae097be72dfa8f918b3139130da769a4 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Sat, 6 Apr 2013 20:28:37 +0200 Subject: [PATCH] Bluetooth: rename hci_conn_put to hci_conn_drop We use _get() and _put() for device ref-counting in the kernel. However, hci_conn_put() is _not_ used for ref-counting, hence, rename it to hci_conn_drop() so we can later fix ref-counting and introduce hci_conn_put(). hci_conn_hold() and hci_conn_put() are currently used to manage how long a connection should be held alive. When the last user drops the connection, we spawn a delayed work that performs the disconnect. Obviously, this has nothing to do with ref-counting for the _object_ but rather for the keep-alive of the connection. But we really _need_ proper ref-counting for the _object_ to allow connection-users like rfcomm-tty, HIDP or others. Signed-off-by: David Herrmann Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan --- include/net/bluetooth/hci_core.h | 2 +- net/bluetooth/hci_conn.c | 6 +++--- net/bluetooth/hci_event.c | 36 ++++++++++++++++---------------- net/bluetooth/l2cap_core.c | 6 +++--- net/bluetooth/mgmt.c | 6 +++--- net/bluetooth/sco.c | 6 +++--- net/bluetooth/smp.c | 2 +- 7 files changed, 32 insertions(+), 32 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index d4e13bf5ae59..78ea9c7c202c 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -612,7 +612,7 @@ static inline void hci_conn_hold(struct hci_conn *conn) cancel_delayed_work(&conn->disc_work); } -static inline void hci_conn_put(struct hci_conn *conn) +static inline void hci_conn_drop(struct hci_conn *conn) { BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index b9f90169940b..30d7dfc23002 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -433,7 +433,7 @@ int hci_conn_del(struct hci_conn *conn) struct hci_conn *acl = conn->link; if (acl) { acl->link = NULL; - hci_conn_put(acl); + hci_conn_drop(acl); } } @@ -565,7 +565,7 @@ static struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, if (!sco) { sco = hci_conn_add(hdev, type, dst); if (!sco) { - hci_conn_put(acl); + hci_conn_drop(acl); return ERR_PTR(-ENOMEM); } } @@ -980,7 +980,7 @@ void hci_chan_del(struct hci_chan *chan) synchronize_rcu(); - hci_conn_put(conn); + hci_conn_drop(conn); skb_queue_purge(&chan->data_q); kfree(chan); diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 0a2b128d2cc9..2cf28b198b31 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1190,7 +1190,7 @@ static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1217,7 +1217,7 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1379,7 +1379,7 @@ static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1406,7 +1406,7 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1860,7 +1860,7 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) } else { conn->state = BT_CONNECT2; hci_proto_connect_cfm(conn, 0); - hci_conn_put(conn); + hci_conn_drop(conn); } } else { /* Connection rejected */ @@ -1967,14 +1967,14 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) } else { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } } else { hci_auth_cfm(conn, ev->status); hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { @@ -2058,7 +2058,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) if (ev->status && conn->state == BT_CONNECTED) { hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); - hci_conn_put(conn); + hci_conn_drop(conn); goto unlock; } @@ -2067,7 +2067,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } else hci_encrypt_cfm(conn, ev->status, ev->encrypt); } @@ -2142,7 +2142,7 @@ static void hci_remote_features_evt(struct hci_dev *hdev, if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: @@ -2682,7 +2682,7 @@ static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb) if (conn->state == BT_CONNECTED) { hci_conn_hold(conn); conn->disc_timeout = HCI_PAIRING_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } if (!test_bit(HCI_PAIRABLE, &hdev->dev_flags)) @@ -2785,7 +2785,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) if (ev->key_type != HCI_LK_CHANGED_COMBINATION) conn->key_type = ev->key_type; - hci_conn_put(conn); + hci_conn_drop(conn); } if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags)) @@ -2954,7 +2954,7 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev, if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: @@ -3087,7 +3087,7 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev, if (ev->status && conn->state == BT_CONNECTED) { hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); - hci_conn_put(conn); + hci_conn_drop(conn); goto unlock; } @@ -3096,13 +3096,13 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev, conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } else { hci_auth_cfm(conn, ev->status); hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: @@ -3363,7 +3363,7 @@ static void hci_simple_pair_complete_evt(struct hci_dev *hdev, mgmt_auth_failed(hdev, &conn->dst, conn->type, conn->dst_type, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); unlock: hci_dev_unlock(hdev); @@ -3451,7 +3451,7 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev, hci_conn_hold(hcon); hcon->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(hcon); + hci_conn_drop(hcon); hci_conn_hold_device(hcon); hci_conn_add_sysfs(hcon); diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 7c7e9321f1ea..7cdb93c21b32 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -571,7 +571,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err) chan->conn = NULL; if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP) - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); if (mgr && mgr->bredr_chan == chan) mgr->bredr_chan = NULL; @@ -1697,7 +1697,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, conn = l2cap_conn_add(hcon, 0); if (!conn) { - hci_conn_put(hcon); + hci_conn_drop(hcon); err = -ENOMEM; goto done; } @@ -1707,7 +1707,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, if (!list_empty(&conn->chan_l)) { err = -EBUSY; - hci_conn_put(hcon); + hci_conn_drop(hcon); } if (err) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 03e7e732215f..34ba1647e6e8 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -2131,7 +2131,7 @@ static void pairing_complete(struct pending_cmd *cmd, u8 status) conn->security_cfm_cb = NULL; conn->disconn_cfm_cb = NULL; - hci_conn_put(conn); + hci_conn_drop(conn); mgmt_pending_remove(cmd); } @@ -2222,7 +2222,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, } if (conn->connect_cfm_cb) { - hci_conn_put(conn); + hci_conn_drop(conn); err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, MGMT_STATUS_BUSY, &rp, sizeof(rp)); goto unlock; @@ -2231,7 +2231,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len); if (!cmd) { err = -ENOMEM; - hci_conn_put(conn); + hci_conn_drop(conn); goto unlock; } diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index d919d1161ab4..9909eec6afe3 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -185,7 +185,7 @@ static int sco_connect(struct sock *sk) conn = sco_conn_add(hcon); if (!conn) { - hci_conn_put(hcon); + hci_conn_drop(hcon); err = -ENOMEM; goto done; } @@ -353,7 +353,7 @@ static void __sco_sock_close(struct sock *sk) if (sco_pi(sk)->conn->hcon) { sk->sk_state = BT_DISCONN; sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); - hci_conn_put(sco_pi(sk)->conn->hcon); + hci_conn_drop(sco_pi(sk)->conn->hcon); sco_pi(sk)->conn->hcon = NULL; } else sco_chan_del(sk, ECONNRESET); @@ -882,7 +882,7 @@ static void sco_chan_del(struct sock *sk, int err) sco_conn_unlock(conn); if (conn->hcon) - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); } sk->sk_state = BT_CLOSED; diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 5abefb12891d..b2296d3857a0 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -522,7 +522,7 @@ void smp_chan_destroy(struct l2cap_conn *conn) kfree(smp); conn->smp_chan = NULL; conn->hcon->smp_conn = NULL; - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); } int smp_user_confirm_reply(struct hci_conn *hcon, u16 mgmt_op, __le32 passkey) -- 2.20.1