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Bluetooth: Create l2cap_chan_send()

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This move all the sending logic to l2cap_core.c, but we still have a
socket dependence there, struct msghdr. It will be removed in some of the
further commits.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Gustavo F. Padovan
2011-04-28 18:50:17 -03:00
parent 4519de9a04
commit 9a91a04a95
3 changed files with 84 additions and 88 deletions
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80
net/bluetooth/l2cap_core.c
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@@ -1535,6 +1535,86 @@ int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t le
return size;
}
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
{
struct sock *sk = chan->sk;
struct sk_buff *skb;
u16 control;
int err;
/* Connectionless channel */
if (sk->sk_type == SOCK_DGRAM) {
skb = l2cap_create_connless_pdu(chan, msg, len);
if (IS_ERR(skb))
return PTR_ERR(skb);
l2cap_do_send(chan, skb);
return len;
}
switch (chan->mode) {
case L2CAP_MODE_BASIC:
/* Check outgoing MTU */
if (len > chan->omtu)
return -EMSGSIZE;
/* Create a basic PDU */
skb = l2cap_create_basic_pdu(chan, msg, len);
if (IS_ERR(skb))
return PTR_ERR(skb);
l2cap_do_send(chan, skb);
err = len;
break;
case L2CAP_MODE_ERTM:
case L2CAP_MODE_STREAMING:
/* Entire SDU fits into one PDU */
if (len <= chan->remote_mps) {
control = L2CAP_SDU_UNSEGMENTED;
skb = l2cap_create_iframe_pdu(chan, msg, len, control,
0);
if (IS_ERR(skb))
return PTR_ERR(skb);
__skb_queue_tail(&chan->tx_q, skb);
if (chan->tx_send_head == NULL)
chan->tx_send_head = skb;
} else {
/* Segment SDU into multiples PDUs */
err = l2cap_sar_segment_sdu(chan, msg, len);
if (err < 0)
return err;
}
if (chan->mode == L2CAP_MODE_STREAMING) {
l2cap_streaming_send(chan);
err = len;
break;
}
if ((chan->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
(chan->conn_state & L2CAP_CONN_WAIT_F)) {
err = len;
break;
}
err = l2cap_ertm_send(chan);
if (err >= 0)
err = len;
break;
default:
BT_DBG("bad state %1.1x", chan->mode);
err = -EBADFD;
}
return err;
}
static void l2cap_chan_ready(struct sock *sk)
{
struct sock *parent = bt_sk(sk)->parent;