2012-05-23 10:57:31

by Andrei Emeltchenko

[permalink] [raw]
Subject: [RFC] Bluetooth: Add L2CAP chan ready op

From: Andrei Emeltchenko <[email protected]>

Addings ops->ready() helps to separate socket and socketless
L2CAP channels.

Signed-off-by: Andrei Emeltchenko <[email protected]>
---
include/net/bluetooth/l2cap.h | 1 +
net/bluetooth/l2cap_core.c | 42 +++++++++++------------------------------
net/bluetooth/l2cap_sock.c | 28 +++++++++++++++++++++++++++
3 files changed, 40 insertions(+), 31 deletions(-)

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 7ed13e7..d89d662 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -533,6 +533,7 @@ struct l2cap_ops {
struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
unsigned long len, int nb);
void (*unlink) (struct l2cap_chan *chan, int err);
+ void (*ready) (struct l2cap_chan *chan);
};

struct l2cap_conn {
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index d2b16b5..838083c 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -427,7 +427,7 @@ struct l2cap_chan *l2cap_chan_create(void)

atomic_set(&chan->refcnt, 1);

- /* This flag is cleared in l2cap_chan_ready() */
+ /* This flag is cleared in l2cap chan ops->ready() */
set_bit(CONF_NOT_COMPLETE, &chan->conf_state);

BT_DBG("chan %p", chan);
@@ -996,30 +996,6 @@ static void l2cap_send_conn_req(struct l2cap_chan *chan)
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, sizeof(req), &req);
}

-static void l2cap_chan_ready(struct l2cap_chan *chan)
-{
- struct sock *sk = chan->sk;
- struct sock *parent;
-
- lock_sock(sk);
-
- parent = bt_sk(sk)->parent;
-
- BT_DBG("sk %p, parent %p", sk, parent);
-
- /* This clears all conf flags, including CONF_NOT_COMPLETE */
- chan->conf_state = 0;
- __clear_chan_timer(chan);
-
- __l2cap_state_change(chan, BT_CONNECTED);
- sk->sk_state_change(sk);
-
- if (parent)
- parent->sk_data_ready(parent, 0);
-
- release_sock(sk);
-}
-
static void l2cap_choose_conn(struct l2cap_chan *chan)
{
if (__amp_capable(chan)) {
@@ -1035,7 +1011,8 @@ static void l2cap_do_start(struct l2cap_chan *chan)
struct l2cap_conn *conn = chan->conn;

if (conn->hcon->type == LE_LINK) {
- l2cap_chan_ready(chan);
+ if (chan->ops->ready)
+ chan->ops->ready(chan);
return;
}

@@ -1306,8 +1283,8 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)

if (conn->hcon->type == LE_LINK) {
if (smp_conn_security(conn, chan->sec_level))
- l2cap_chan_ready(chan);
-
+ if (chan->ops->ready)
+ chan->ops->ready(chan);
} else if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) {
struct sock *sk = chan->sk;
__clear_chan_timer(chan);
@@ -3703,7 +3680,8 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
if (err < 0)
l2cap_send_disconn_req(chan->conn, chan, -err);
else
- l2cap_chan_ready(chan);
+ if (chan->ops->ready)
+ chan->ops->ready(chan);

goto unlock;
}
@@ -3834,7 +3812,8 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
if (err < 0)
l2cap_send_disconn_req(chan->conn, chan, -err);
else
- l2cap_chan_ready(chan);
+ if (chan->ops->ready)
+ chan->ops->ready(chan);
}

done:
@@ -5489,7 +5468,8 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
if (chan->scid == L2CAP_CID_LE_DATA) {
if (!status && encrypt) {
chan->sec_level = hcon->sec_level;
- l2cap_chan_ready(chan);
+ if (chan->ops->ready)
+ chan->ops->ready(chan);
}

l2cap_chan_unlock(chan);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index d6f481b..5eb28a2 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -979,6 +979,33 @@ static void l2cap_sock_unlink_cb(struct l2cap_chan *chan, int err)
release_sock(sk);
}

+static void l2cap_sock_chan_ready_cb(struct l2cap_chan *chan)
+{
+ struct sock *sk = chan->sk;
+ struct sock *parent;
+
+ lock_sock(sk);
+
+ parent = bt_sk(sk)->parent;
+
+ BT_DBG("sk %p, parent %p", sk, parent);
+
+ __clear_chan_timer(chan);
+
+ /* This clears all conf flags, including CONF_NOT_COMPLETE */
+ chan->conf_state = 0;
+
+ chan->state = BT_CONNECTED;
+ sk->sk_state = BT_CONNECTED;
+
+ sk->sk_state_change(sk);
+
+ if (parent)
+ parent->sk_data_ready(parent, 0);
+
+ release_sock(sk);
+}
+
static struct l2cap_ops l2cap_chan_ops = {
.name = "L2CAP Socket Interface",
.new_connection = l2cap_sock_new_connection_cb,
@@ -987,6 +1014,7 @@ static struct l2cap_ops l2cap_chan_ops = {
.state_change = l2cap_sock_state_change_cb,
.alloc_skb = l2cap_sock_alloc_skb_cb,
.unlink = l2cap_sock_unlink_cb,
+ .ready = l2cap_sock_chan_ready_cb,
};

static void l2cap_sock_destruct(struct sock *sk)
--
1.7.9.5



2012-05-23 11:00:54

by Ulisses Furquim

[permalink] [raw]
Subject: Re: [RFC] Bluetooth: Add L2CAP chan ready op

Hi Andrei,

On Wed, May 23, 2012 at 7:57 AM, Andrei Emeltchenko
<[email protected]> wrote:
>
> From: Andrei Emeltchenko <[email protected]>
>
> Addings ops->ready() helps to separate socket and socketless
> L2CAP channels.
>
> Signed-off-by: Andrei Emeltchenko <[email protected]>
> ---
> ?include/net/bluetooth/l2cap.h | ? ?1 +
> ?net/bluetooth/l2cap_core.c ? ?| ? 42 +++++++++++------------------------------
> ?net/bluetooth/l2cap_sock.c ? ?| ? 28 +++++++++++++++++++++++++++
> ?3 files changed, 40 insertions(+), 31 deletions(-)

Looks good to me. And we do need to refactor other parts in other to
push sock related code to chan->ops as well.

Best regards,

--
Ulisses Furquim
ProFUSION embedded systems
http://profusion.mobi
Mobile: +55 19 9250 0942
Skype: ulissesffs