From: Emeltchenko Andrei <Andrei.Emeltchenko.news@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [RFCv2 06/10] Bluetooth: Add locked and unlocked state_change
Date: Fri, 3 Feb 2012 16:36:25 +0200 [thread overview]
Message-ID: <1328279789-10870-7-git-send-email-Andrei.Emeltchenko.news@gmail.com> (raw)
In-Reply-To: <1328279789-10870-1-git-send-email-Andrei.Emeltchenko.news@gmail.com>
From: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Split to locked and unlocked versions of l2cap_state_change helping
to remove socket locks from l2cap code.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 39 +++++++++++++++++++++++----------------
1 files changed, 23 insertions(+), 16 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index bb828ca..cdc9d0c 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -227,7 +227,7 @@ static char *state_to_string(int state)
return "invalid state";
}
-static void l2cap_state_change(struct l2cap_chan *chan, int state)
+static void __l2cap_state_change(struct l2cap_chan *chan, int state)
{
BT_DBG("%p %s -> %s", chan, state_to_string(chan->state),
state_to_string(state));
@@ -236,6 +236,13 @@ static void l2cap_state_change(struct l2cap_chan *chan, int state)
chan->ops->state_change(chan->data, state);
}
+static void l2cap_state_change(struct l2cap_chan *chan, int state)
+{
+ lock_sock(chan->sk);
+ __l2cap_state_change(chan, state);
+ release_sock(chan->sk);
+}
+
static void l2cap_chan_timeout(struct work_struct *work)
{
struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
@@ -374,7 +381,7 @@ static void l2cap_chan_del(struct l2cap_chan *chan, int err)
hci_conn_put(conn->hcon);
}
- l2cap_state_change(chan, BT_CLOSED);
+ __l2cap_state_change(chan, BT_CLOSED);
sock_set_flag(sk, SOCK_ZAPPED);
if (err)
@@ -440,7 +447,7 @@ void l2cap_chan_close(struct l2cap_chan *chan, int reason)
case BT_LISTEN:
l2cap_chan_cleanup_listen(sk);
- l2cap_state_change(chan, BT_CLOSED);
+ __l2cap_state_change(chan, BT_CLOSED);
sock_set_flag(sk, SOCK_ZAPPED);
break;
@@ -731,8 +738,8 @@ static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *c
l2cap_send_cmd(conn, l2cap_get_ident(conn),
L2CAP_DISCONN_REQ, sizeof(req), &req);
- l2cap_state_change(chan, BT_DISCONN);
sk->sk_err = err;
+ __l2cap_state_change(chan, BT_DISCONN);
}
/* ---- L2CAP connections ---- */
@@ -797,7 +804,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
parent->sk_data_ready(parent, 0);
} else {
- l2cap_state_change(chan, BT_CONFIG);
+ __l2cap_state_change(chan, BT_CONFIG);
rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
}
@@ -900,7 +907,7 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
__set_chan_timer(chan, sk->sk_sndtimeo);
- l2cap_state_change(chan, BT_CONNECTED);
+ __l2cap_state_change(chan, BT_CONNECTED);
parent->sk_data_ready(parent, 0);
clean:
@@ -917,7 +924,7 @@ static void l2cap_chan_ready(struct l2cap_chan *chan)
chan->conf_state = 0;
__clear_chan_timer(chan);
- l2cap_state_change(chan, BT_CONNECTED);
+ __l2cap_state_change(chan, BT_CONNECTED);
sk->sk_state_change(sk);
if (parent)
@@ -949,7 +956,7 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
} else if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
__clear_chan_timer(chan);
- l2cap_state_change(chan, BT_CONNECTED);
+ __l2cap_state_change(chan, BT_CONNECTED);
sk->sk_state_change(sk);
} else if (chan->state == BT_CONNECT)
@@ -1223,14 +1230,14 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, bdaddr_t *d
l2cap_chan_add(conn, chan);
- l2cap_state_change(chan, BT_CONNECT);
+ __l2cap_state_change(chan, BT_CONNECT);
__set_chan_timer(chan, sk->sk_sndtimeo);
if (hcon->state == BT_CONNECTED) {
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
__clear_chan_timer(chan);
if (l2cap_chan_check_security(chan))
- l2cap_state_change(chan, BT_CONNECTED);
+ __l2cap_state_change(chan, BT_CONNECTED);
} else
l2cap_do_start(chan);
}
@@ -2674,22 +2681,22 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
if (l2cap_chan_check_security(chan)) {
if (bt_sk(sk)->defer_setup) {
- l2cap_state_change(chan, BT_CONNECT2);
+ __l2cap_state_change(chan, BT_CONNECT2);
result = L2CAP_CR_PEND;
status = L2CAP_CS_AUTHOR_PEND;
parent->sk_data_ready(parent, 0);
} else {
- l2cap_state_change(chan, BT_CONFIG);
+ __l2cap_state_change(chan, BT_CONFIG);
result = L2CAP_CR_SUCCESS;
status = L2CAP_CS_NO_INFO;
}
} else {
- l2cap_state_change(chan, BT_CONNECT2);
+ __l2cap_state_change(chan, BT_CONNECT2);
result = L2CAP_CR_PEND;
status = L2CAP_CS_AUTHEN_PEND;
}
} else {
- l2cap_state_change(chan, BT_CONNECT2);
+ __l2cap_state_change(chan, BT_CONNECT2);
result = L2CAP_CR_PEND;
status = L2CAP_CS_NO_INFO;
}
@@ -4577,12 +4584,12 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
if (parent)
parent->sk_data_ready(parent, 0);
} else {
- l2cap_state_change(chan, BT_CONFIG);
+ __l2cap_state_change(chan, BT_CONFIG);
res = L2CAP_CR_SUCCESS;
stat = L2CAP_CS_NO_INFO;
}
} else {
- l2cap_state_change(chan, BT_DISCONN);
+ __l2cap_state_change(chan, BT_DISCONN);
__set_chan_timer(chan,
msecs_to_jiffies(L2CAP_DISC_TIMEOUT));
res = L2CAP_CR_SEC_BLOCK;
--
1.7.8.3
next prev parent reply other threads:[~2012-02-03 14:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-03 14:36 [RFCv2 00/10] Bluetooth: Change socket lock to l2cap_chan lock Emeltchenko Andrei
2012-02-03 14:36 ` [RFCv2 01/10] Bluetooth: Change chan_ready param from sk to chan Emeltchenko Andrei
2012-02-03 16:04 ` Marcel Holtmann
2012-02-03 14:36 ` [RFCv2 02/10] Bluetooth: Clean up l2cap_chan_add Emeltchenko Andrei
2012-02-03 16:04 ` Marcel Holtmann
2012-02-03 14:36 ` [RFCv2 03/10] Bluetooth: Remove unneeded sk variable Emeltchenko Andrei
2012-02-03 16:05 ` Marcel Holtmann
2012-02-03 14:36 ` [RFCv2 04/10] Bluetooth: Revert to mutexes from RCU list Emeltchenko Andrei
2012-02-03 16:06 ` Marcel Holtmann
2012-02-03 21:14 ` Ulisses Furquim
2012-02-06 10:44 ` Emeltchenko Andrei
2012-02-03 14:36 ` [RFCv2 05/10] Bluetooth: Add l2cap_chan_lock Emeltchenko Andrei
2012-02-03 16:07 ` Marcel Holtmann
2012-02-03 14:36 ` Emeltchenko Andrei [this message]
2012-02-03 16:08 ` [RFCv2 06/10] Bluetooth: Add locked and unlocked state_change Marcel Holtmann
2012-02-03 14:36 ` [RFCv2 07/10] Bluetooth: Add socket error function Emeltchenko Andrei
2012-02-03 16:09 ` Marcel Holtmann
2012-02-03 14:36 ` [RFCv2 08/10] Bluetooth: Change socket lock to chan lock Emeltchenko Andrei
2012-02-03 14:36 ` [RFCv2 09/10] Bluetooth: Use l2cap chan lock in socket connect Emeltchenko Andrei
2012-02-03 14:36 ` [RFCv2 10/10] Bluetooth: Remove socket lock check Emeltchenko Andrei
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