Bluetooth: Move conn to struct l2cap_chan

There is no need to the socket deal directly with the channel, most of the
time it cares about the channel only.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index fdd8f5a..121a5c1 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -232,6 +232,8 @@
 static inline int rfcomm_check_security(struct rfcomm_dlc *d)
 {
 	struct sock *sk = d->session->sock->sk;
+	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
+
 	__u8 auth_type;
 
 	switch (d->sec_level) {
@@ -246,8 +248,7 @@
 		break;
 	}
 
-	return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level,
-								auth_type);
+	return hci_conn_security(conn->hcon, d->sec_level, auth_type);
 }
 
 static void rfcomm_session_timeout(unsigned long arg)
@@ -1241,6 +1242,7 @@
 void rfcomm_dlc_accept(struct rfcomm_dlc *d)
 {
 	struct sock *sk = d->session->sock->sk;
+	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
 
 	BT_DBG("dlc %p", d);
 
@@ -1254,7 +1256,7 @@
 	rfcomm_dlc_unlock(d);
 
 	if (d->role_switch)
-		hci_conn_switch_role(l2cap_pi(sk)->conn->hcon, 0x00);
+		hci_conn_switch_role(conn->hcon, 0x00);
 
 	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);
 }
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 66cc1f0..386cfaf 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -743,6 +743,7 @@
 	struct sock *sk = sock->sk;
 	struct sock *l2cap_sk;
 	struct rfcomm_conninfo cinfo;
+	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
 	int len, err = 0;
 	u32 opt;
 
@@ -787,8 +788,8 @@
 
 		l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk;
 
-		cinfo.hci_handle = l2cap_pi(l2cap_sk)->conn->hcon->handle;
-		memcpy(cinfo.dev_class, l2cap_pi(l2cap_sk)->conn->hcon->dev_class, 3);
+		cinfo.hci_handle = conn->hcon->handle;
+		memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
 
 		len = min_t(unsigned int, len, sizeof(cinfo));
 		if (copy_to_user(optval, (char *) &cinfo, len))