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authorJohan Hedberg <johan.hedberg@intel.com>2013-12-05 14:55:33 +0200
committerMarcel Holtmann <marcel@holtmann.org>2013-12-05 07:05:36 -0800
commit0ce43ce60d5e0c079d33be1fe33ba92828c7e5da (patch)
treef7cb56f1ffe4717ab5f807b0d85df03ba4c62669 /net/bluetooth
parentf15b8ecf9895941ef50134ff604be8bd2c6b1b78 (diff)
downloadlinux-0ce43ce60d5e0c079d33be1fe33ba92828c7e5da.tar.bz2
Bluetooth: Simplify l2cap_chan initialization for LE CoC
The values in l2cap_chan that are used for actually transmitting data only need to be initialized right after we've received an L2CAP Connect Request or just before we send one. The only thing that we need to initialize though bind() and connect() is the chan->mode value. This way all other initializations can be done in the l2cap_le_flowctl_init function (which now becomes private to l2cap_core.c) and the l2cap_le_flowctl_start function can be completely removed. Also, since the l2cap_sock_init function initializes the imtu and omtu to adequate values these do not need to be part of l2cap_le_flowctl_init. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/l2cap_core.c35
-rw-r--r--net/bluetooth/l2cap_sock.c4
2 files changed, 14 insertions, 25 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 8e9e883874ce..6e6f308af036 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -498,11 +498,11 @@ void l2cap_chan_set_defaults(struct l2cap_chan *chan)
set_bit(FLAG_FORCE_ACTIVE, &chan->flags);
}
-void l2cap_le_flowctl_init(struct l2cap_chan *chan)
+static void l2cap_le_flowctl_init(struct l2cap_chan *chan)
{
- chan->imtu = L2CAP_DEFAULT_MTU;
- chan->omtu = L2CAP_LE_MIN_MTU;
- chan->mode = L2CAP_MODE_LE_FLOWCTL;
+ chan->sdu = NULL;
+ chan->sdu_last_frag = NULL;
+ chan->sdu_len = 0;
chan->tx_credits = 0;
chan->rx_credits = le_max_credits;
@@ -510,6 +510,8 @@ void l2cap_le_flowctl_init(struct l2cap_chan *chan)
chan->mps = chan->imtu;
else
chan->mps = L2CAP_LE_DEFAULT_MPS;
+
+ skb_queue_head_init(&chan->tx_q);
}
void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
@@ -1208,31 +1210,14 @@ static void l2cap_move_done(struct l2cap_chan *chan)
}
}
-static void l2cap_le_flowctl_start(struct l2cap_chan *chan)
-{
- chan->sdu = NULL;
- chan->sdu_last_frag = NULL;
- chan->sdu_len = 0;
-
- if (chan->imtu < L2CAP_LE_DEFAULT_MPS)
- chan->mps = chan->imtu;
- else
- chan->mps = le_default_mps;
-
- skb_queue_head_init(&chan->tx_q);
-
- if (!chan->tx_credits)
- chan->ops->suspend(chan);
-}
-
static void l2cap_chan_ready(struct l2cap_chan *chan)
{
/* This clears all conf flags, including CONF_NOT_COMPLETE */
chan->conf_state = 0;
__clear_chan_timer(chan);
- if (chan->mode == L2CAP_MODE_LE_FLOWCTL)
- l2cap_le_flowctl_start(chan);
+ if (chan->mode == L2CAP_MODE_LE_FLOWCTL && !chan->tx_credits)
+ chan->ops->suspend(chan);
chan->state = BT_CONNECTED;
@@ -1909,7 +1894,9 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
switch (chan->mode) {
case L2CAP_MODE_BASIC:
+ break;
case L2CAP_MODE_LE_FLOWCTL:
+ l2cap_le_flowctl_init(chan);
break;
case L2CAP_MODE_ERTM:
case L2CAP_MODE_STREAMING:
@@ -5663,6 +5650,8 @@ static int l2cap_le_connect_req(struct l2cap_conn *conn,
goto response_unlock;
}
+ l2cap_le_flowctl_init(chan);
+
bacpy(&chan->src, &conn->hcon->src);
bacpy(&chan->dst, &conn->hcon->dst);
chan->src_type = bdaddr_type(conn->hcon, conn->hcon->src_type);
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 88fa9c07c503..e7806e6d282c 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -153,7 +153,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
chan->src_type = la.l2_bdaddr_type;
if (chan->psm && bdaddr_type_is_le(chan->src_type))
- l2cap_le_flowctl_init(chan);
+ chan->mode = L2CAP_MODE_LE_FLOWCTL;
chan->state = BT_BOUND;
sk->sk_state = BT_BOUND;
@@ -226,7 +226,7 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
}
if (chan->psm && bdaddr_type_is_le(chan->src_type))
- l2cap_le_flowctl_init(chan);
+ chan->mode = L2CAP_MODE_LE_FLOWCTL;
err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid),
&la.l2_bdaddr, la.l2_bdaddr_type);