[PATCH_v3] android: Add initial MCAP common code

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The patch keeps all MCAP specific logic in mcap-lib until it receives
proper unit tests and then eventually will be used by health profile
code as well.
---
v3: Fixed Szymon's comments (Copyright and android build issues)
---
 android/Android.mk  |    1 +
 android/Makefile.am |    1 +
 android/mcap-lib.c  | 3154 +++++++++++++++++++++++++++++++++++++++++++++++++++
 android/mcap-lib.h  |  441 +++++++
 4 files changed, 3597 insertions(+)
 create mode 100644 android/mcap-lib.c
 create mode 100644 android/mcap-lib.h

diff --git a/android/Android.mk b/android/Android.mk
index 3a62485..1eee0e2 100644
--- a/android/Android.mk
+++ b/android/Android.mk
@@ -44,6 +44,7 @@ LOCAL_SRC_FILES := \
 	bluez/android/handsfree.c \
 	bluez/android/gatt.c \
 	bluez/android/health.c \
+	bluez/android/mcap-lib.c \
 	bluez/src/log.c \
 	bluez/src/shared/mgmt.c \
 	bluez/src/shared/util.c \
diff --git a/android/Makefile.am b/android/Makefile.am
index 6bcf0e8..c51cce2 100644
--- a/android/Makefile.am
+++ b/android/Makefile.am
@@ -43,6 +43,7 @@ android_bluetoothd_SOURCES = android/main.c \
 				android/handsfree.h android/handsfree.c \
 				android/gatt.h android/gatt.c \
 				android/health.h android/health.c \
+				android/mcap-lib.h android/mcap-lib.c \
 				attrib/att.c attrib/att.h \
 				attrib/gatt.c attrib/gatt.h \
 				attrib/gattrib.c attrib/gattrib.h \
diff --git a/android/mcap-lib.c b/android/mcap-lib.c
new file mode 100644
index 0000000..b93b0c8
--- /dev/null
+++ b/android/mcap-lib.c
@@ -0,0 +1,3154 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2010 GSyC/LibreSoft, Universidad Rey Juan Carlos.
+ *  Copyright (C) 2010 Signove
+ *  Copyright (C) 2014 Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <glib.h>
+
+#include "lib/bluetooth.h"
+#include "bluetooth/l2cap.h"
+#include "btio/btio.h"
+#include "src/log.h"
+
+#include "mcap-lib.h"
+
+#define MCAP_BTCLOCK_HALF (MCAP_BTCLOCK_FIELD / 2)
+#define CLK CLOCK_MONOTONIC
+
+#define MCAP_CSP_ERROR g_quark_from_static_string("mcap-csp-error-quark")
+#define MAX_RETRIES	10
+#define SAMPLE_COUNT	20
+
+#define RESPONSE_TIMER	6	/* seconds */
+#define MAX_CACHED	10	/* 10 devices */
+
+#define MCAP_ERROR g_quark_from_static_string("mcap-error-quark")
+
+#define RELEASE_TIMER(__mcl) do {		\
+	if (__mcl->tid) {			\
+		g_source_remove(__mcl->tid);	\
+		__mcl->tid = 0;			\
+	}					\
+} while(0)
+
+struct mcap_csp {
+	uint64_t	base_tmstamp;	/* CSP base timestamp */
+	struct timespec	base_time;	/* CSP base time when timestamp set */
+	guint		local_caps;	/* CSP-Master: have got remote caps */
+	guint		remote_caps;	/* CSP-Slave: remote master got caps */
+	guint		rem_req_acc;	/* CSP-Slave: accuracy required by master */
+	guint		ind_expected;	/* CSP-Master: indication expected */
+	uint8_t		csp_req;	/* CSP-Master: Request control flag */
+	guint		ind_timer;	/* CSP-Slave: indication timer */
+	guint		set_timer;	/* CSP-Slave: delayed set timer */
+	void		*set_data;	/* CSP-Slave: delayed set data */
+	void		*csp_priv_data;	/* CSP-Master: In-flight request data */
+};
+
+struct mcap_sync_cap_cbdata {
+	mcap_sync_cap_cb	cb;
+	gpointer		user_data;
+};
+
+struct mcap_sync_set_cbdata {
+	mcap_sync_set_cb	cb;
+	gpointer		user_data;
+};
+
+struct csp_caps {
+	int ts_acc;		/* timestamp accuracy */
+	int ts_res;		/* timestamp resolution */
+	int latency;		/* Read BT clock latency */
+	int preempt_thresh;	/* Preemption threshold for latency */
+	int syncleadtime_ms;	/* SyncLeadTime in ms */
+};
+
+struct sync_set_data {
+	uint8_t update;
+	uint32_t sched_btclock;
+	uint64_t timestamp;
+	int ind_freq;
+	gboolean role;
+};
+
+struct connect_mcl {
+	struct mcap_mcl		*mcl;		/* MCL for this operation */
+	mcap_mcl_connect_cb	connect_cb;	/* Connect callback */
+	GDestroyNotify		destroy;	/* Destroy callback */
+	gpointer		user_data;	/* Callback user data */
+};
+
+typedef union {
+	mcap_mdl_operation_cb		op;
+	mcap_mdl_operation_conf_cb	op_conf;
+	mcap_mdl_notify_cb		notify;
+} mcap_cb_type;
+
+struct mcap_mdl_op_cb {
+	struct mcap_mdl		*mdl;		/* MDL for this operation */
+	mcap_cb_type		cb;		/* Operation callback */
+	GDestroyNotify		destroy;	/* Destroy callback */
+	gpointer		user_data;	/* Callback user data */
+};
+
+/* MCAP finite state machine functions */
+static void proc_req_connected(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l);
+static void proc_req_pending(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l);
+static void proc_req_active(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t l);
+
+static void (*proc_req[])(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len) = {
+	proc_req_connected,
+	proc_req_pending,
+	proc_req_active
+};
+
+static gboolean csp_caps_initialized = FALSE;
+struct csp_caps _caps;
+
+static void mcap_cache_mcl(struct mcap_mcl *mcl);
+
+static void default_mdl_connected_cb(struct mcap_mdl *mdl, gpointer data)
+{
+	DBG("MCAP Unmanaged mdl connection");
+}
+
+static void default_mdl_closed_cb(struct mcap_mdl *mdl, gpointer data)
+{
+	DBG("MCAP Unmanaged mdl closed");
+}
+
+static void default_mdl_deleted_cb(struct mcap_mdl *mdl, gpointer data)
+{
+	DBG("MCAP Unmanaged mdl deleted");
+}
+
+static void default_mdl_aborted_cb(struct mcap_mdl *mdl, gpointer data)
+{
+	DBG("MCAP Unmanaged mdl aborted");
+}
+
+static uint8_t default_mdl_conn_req_cb(struct mcap_mcl *mcl,
+						uint8_t mdepid, uint16_t mdlid,
+						uint8_t *conf, gpointer data)
+{
+	DBG("MCAP mdl remote connection aborted");
+	/* Due to this callback isn't managed this request won't be supported */
+	return MCAP_REQUEST_NOT_SUPPORTED;
+}
+
+static uint8_t default_mdl_reconn_req_cb(struct mcap_mdl *mdl,
+						gpointer data)
+{
+	DBG("MCAP mdl remote reconnection aborted");
+	/* Due to this callback isn't managed this request won't be supported */
+	return MCAP_REQUEST_NOT_SUPPORTED;
+}
+
+static void set_default_cb(struct mcap_mcl *mcl)
+{
+	if (!mcl->cb)
+		mcl->cb = g_new0(struct mcap_mdl_cb, 1);
+
+	mcl->cb->mdl_connected = default_mdl_connected_cb;
+	mcl->cb->mdl_closed = default_mdl_closed_cb;
+	mcl->cb->mdl_deleted = default_mdl_deleted_cb;
+	mcl->cb->mdl_aborted = default_mdl_aborted_cb;
+	mcl->cb->mdl_conn_req = default_mdl_conn_req_cb;
+	mcl->cb->mdl_reconn_req = default_mdl_reconn_req_cb;
+}
+
+static char *error2str(uint8_t rc)
+{
+	switch (rc) {
+	case MCAP_SUCCESS:
+		return "Success";
+	case MCAP_INVALID_OP_CODE:
+		return "Invalid Op Code";
+	case MCAP_INVALID_PARAM_VALUE:
+		return "Invalid Parameter Value";
+	case MCAP_INVALID_MDEP:
+		return "Invalid MDEP";
+	case MCAP_MDEP_BUSY:
+		return "MDEP Busy";
+	case MCAP_INVALID_MDL:
+		return "Invalid MDL";
+	case MCAP_MDL_BUSY:
+		return "MDL Busy";
+	case MCAP_INVALID_OPERATION:
+		return "Invalid Operation";
+	case MCAP_RESOURCE_UNAVAILABLE:
+		return "Resource Unavailable";
+	case MCAP_UNSPECIFIED_ERROR:
+		return "Unspecified Error";
+	case MCAP_REQUEST_NOT_SUPPORTED:
+		return "Request Not Supported";
+	case MCAP_CONFIGURATION_REJECTED:
+		return "Configuration Rejected";
+	default:
+		return "Unknown Response Code";
+	}
+}
+
+static gboolean mcap_send_std_opcode(struct mcap_mcl *mcl, void *cmd,
+						uint32_t size, GError **err)
+{
+	if (mcl->state == MCL_IDLE) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+							"MCL is not connected");
+		return FALSE;
+	}
+
+	if (mcl->req != MCL_AVAILABLE) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_RESOURCE_UNAVAILABLE,
+							"Pending request");
+		return FALSE;
+	}
+
+	if (!(mcl->ctrl & MCAP_CTRL_STD_OP)) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_REQUEST_NOT_SUPPORTED,
+				"Remote does not support standard opcodes");
+		return FALSE;
+	}
+
+	if (mcl->state == MCL_PENDING) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_OPERATION,
+			"Not Std Op. Codes can be sent in PENDING State");
+		return FALSE;
+	}
+
+	if (mcap_send_data(g_io_channel_unix_get_fd(mcl->cc), cmd, size) < 0) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+					"Command can't be sent, write error");
+		return FALSE;
+	}
+
+	mcl->lcmd = cmd;
+	mcl->req = MCL_WAITING_RSP;
+
+	return TRUE;
+}
+
+static void update_mcl_state(struct mcap_mcl *mcl)
+{
+	GSList *l;
+	struct mcap_mdl *mdl;
+
+	if (mcl->state == MCL_PENDING)
+		return;
+
+	for (l = mcl->mdls; l; l = l->next) {
+		mdl = l->data;
+
+		if (mdl->state == MDL_CONNECTED) {
+			mcl->state = MCL_ACTIVE;
+			return;
+		}
+	}
+
+	mcl->state = MCL_CONNECTED;
+}
+
+static void shutdown_mdl(struct mcap_mdl *mdl)
+{
+	mdl->state = MDL_CLOSED;
+
+	if (mdl->wid) {
+		g_source_remove(mdl->wid);
+		mdl->wid = 0;
+	}
+
+	if (mdl->dc) {
+		g_io_channel_shutdown(mdl->dc, TRUE, NULL);
+		g_io_channel_unref(mdl->dc);
+		mdl->dc = NULL;
+	}
+}
+
+static void free_mdl(struct mcap_mdl *mdl)
+{
+	if (!mdl)
+		return;
+
+	mcap_mcl_unref(mdl->mcl);
+	g_free(mdl);
+}
+
+static int cmp_mdl_state(gconstpointer a, gconstpointer b)
+{
+	const struct mcap_mdl *mdl = a;
+	const MDLState *st = b;
+
+	if (mdl->state == *st)
+		return 0;
+	else if (mdl->state < *st)
+		return -1;
+	else
+		return 1;
+}
+
+static void free_mcap_mdl_op(struct mcap_mdl_op_cb *op)
+{
+	if (op->destroy)
+		op->destroy(op->user_data);
+
+	if (op->mdl)
+		mcap_mdl_unref(op->mdl);
+
+	g_free(op);
+}
+
+static void free_mcl_priv_data(struct mcap_mcl *mcl)
+{
+	free_mcap_mdl_op(mcl->priv_data);
+	mcl->priv_data = NULL;
+}
+
+static void mcap_notify_error(struct mcap_mcl *mcl, GError *err)
+{
+	struct mcap_mdl_op_cb *con = mcl->priv_data;
+	struct mcap_mdl *mdl;
+	MDLState st;
+	GSList *l;
+
+	if (!con || !mcl->lcmd)
+		return;
+
+	switch (mcl->lcmd[0]) {
+	case MCAP_MD_CREATE_MDL_REQ:
+		st = MDL_WAITING;
+		l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state);
+		mdl = l->data;
+		mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+		mcap_mdl_unref(mdl);
+		update_mcl_state(mcl);
+		con->cb.op_conf(NULL, 0, err, con->user_data);
+		break;
+	case MCAP_MD_ABORT_MDL_REQ:
+		st = MDL_WAITING;
+		l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state);
+		shutdown_mdl(l->data);
+		update_mcl_state(mcl);
+		con->cb.notify(err, con->user_data);
+		break;
+	case MCAP_MD_DELETE_MDL_REQ:
+		for (l = mcl->mdls; l; l = l->next) {
+			mdl = l->data;
+			if (mdl->state == MDL_DELETING)
+				mdl->state = (mdl->dc) ? MDL_CONNECTED :
+								MDL_CLOSED;
+		}
+		update_mcl_state(mcl);
+		con->cb.notify(err, con->user_data);
+		break;
+	case MCAP_MD_RECONNECT_MDL_REQ:
+		st = MDL_WAITING;
+		l = g_slist_find_custom(mcl->mdls, &st, cmp_mdl_state);
+		shutdown_mdl(l->data);
+		update_mcl_state(mcl);
+		con->cb.op(NULL, err, con->user_data);
+		break;
+	}
+
+	free_mcl_priv_data(mcl);
+	g_free(mcl->lcmd);
+	mcl->lcmd = NULL;
+}
+
+int mcap_send_data(int sock, const void *buf, uint32_t size)
+{
+	const uint8_t *buf_b = buf;
+	uint32_t sent = 0;
+
+	while (sent < size) {
+		int n = write(sock, buf_b + sent, size - sent);
+		if (n < 0)
+			return -1;
+		sent += n;
+	}
+
+	return 0;
+}
+
+static int mcap_send_cmd(struct mcap_mcl *mcl, uint8_t oc, uint8_t rc,
+					uint16_t mdl, uint8_t *data, size_t len)
+{
+	mcap_rsp *cmd;
+	int sock, sent;
+
+	if (mcl->cc == NULL)
+		return -1;
+
+	sock = g_io_channel_unix_get_fd(mcl->cc);
+
+	cmd = g_malloc(sizeof(mcap_rsp) + len);
+	cmd->op = oc;
+	cmd->rc = rc;
+	cmd->mdl = htons(mdl);
+
+	if (data && len > 0)
+		memcpy(cmd->data, data, len);
+
+	sent = mcap_send_data(sock, cmd, sizeof(mcap_rsp) + len);
+	g_free(cmd);
+
+	return sent;
+}
+
+static struct mcap_mdl *get_mdl(struct mcap_mcl *mcl, uint16_t mdlid)
+{
+	GSList *l;
+	struct mcap_mdl *mdl;
+
+	for (l = mcl->mdls; l; l = l->next) {
+		mdl = l->data;
+		if (mdlid == mdl->mdlid)
+			return mdl;
+	}
+
+	return NULL;
+}
+
+static uint16_t generate_mdlid(struct mcap_mcl *mcl)
+{
+	uint16_t mdlid = mcl->next_mdl;
+	struct mcap_mdl *mdl;
+
+	do {
+		mdl = get_mdl(mcl, mdlid);
+		if (!mdl) {
+			mcl->next_mdl = (mdlid % MCAP_MDLID_FINAL) + 1;
+			return mdlid;
+		} else
+			mdlid = (mdlid % MCAP_MDLID_FINAL) + 1;
+	} while (mdlid != mcl->next_mdl);
+
+	/* No more mdlids availables */
+	return 0;
+}
+
+static mcap_md_req *create_req(uint8_t op, uint16_t mdl_id)
+{
+	mcap_md_req *req_cmd;
+
+	req_cmd = g_new0(mcap_md_req, 1);
+
+	req_cmd->op = op;
+	req_cmd->mdl = htons(mdl_id);
+
+	return req_cmd;
+}
+
+static mcap_md_create_mdl_req *create_mdl_req(uint16_t mdl_id, uint8_t mdep,
+								uint8_t conf)
+{
+	mcap_md_create_mdl_req *req_mdl;
+
+	req_mdl = g_new0(mcap_md_create_mdl_req, 1);
+
+	req_mdl->op = MCAP_MD_CREATE_MDL_REQ;
+	req_mdl->mdl = htons(mdl_id);
+	req_mdl->mdep = mdep;
+	req_mdl->conf = conf;
+
+	return req_mdl;
+}
+
+static int compare_mdl(gconstpointer a, gconstpointer b)
+{
+	const struct mcap_mdl *mdla = a;
+	const struct mcap_mdl *mdlb = b;
+
+	if (mdla->mdlid == mdlb->mdlid)
+		return 0;
+	else if (mdla->mdlid < mdlb->mdlid)
+		return -1;
+	else
+		return 1;
+}
+
+static gboolean wait_response_timer(gpointer data)
+{
+	struct mcap_mcl *mcl = data;
+
+	GError *gerr = NULL;
+
+	RELEASE_TIMER(mcl);
+
+	g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_FAILED,
+					"Timeout waiting response");
+
+	mcap_notify_error(mcl, gerr);
+
+	g_error_free(gerr);
+	mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data);
+	mcap_cache_mcl(mcl);
+
+	return FALSE;
+}
+
+gboolean mcap_create_mdl(struct mcap_mcl *mcl,
+				uint8_t mdepid,
+				uint8_t conf,
+				mcap_mdl_operation_conf_cb connect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err)
+{
+	struct mcap_mdl *mdl;
+	struct mcap_mdl_op_cb *con;
+	mcap_md_create_mdl_req *cmd;
+	uint16_t id;
+
+	id = generate_mdlid(mcl);
+	if (!id) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+					"Not more mdlids available");
+		return FALSE;
+	}
+
+	mdl = g_new0(struct mcap_mdl, 1);
+	mdl->mcl = mcap_mcl_ref(mcl);
+	mdl->mdlid = id;
+	mdl->mdep_id = mdepid;
+	mdl->state = MDL_WAITING;
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = mcap_mdl_ref(mdl);
+	con->cb.op_conf = connect_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	cmd = create_mdl_req(id, mdepid, conf);
+	if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_create_mdl_req),
+									err)) {
+		mcap_mdl_unref(con->mdl);
+		g_free(con);
+		g_free(cmd);
+		return FALSE;
+	}
+
+	mcl->state = MCL_ACTIVE;
+	mcl->priv_data = con;
+
+	mcl->mdls = g_slist_insert_sorted(mcl->mdls, mcap_mdl_ref(mdl),
+								compare_mdl);
+	mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer,
+									mcl);
+	return TRUE;
+}
+
+gboolean mcap_reconnect_mdl(struct mcap_mdl *mdl,
+				mcap_mdl_operation_cb reconnect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err)
+{
+	struct mcap_mdl_op_cb *con;
+	struct mcap_mcl *mcl = mdl->mcl;
+	mcap_md_req *cmd;
+
+	if (mdl->state != MDL_CLOSED) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+					"MDL is not closed");
+		return FALSE;
+	}
+
+	cmd = create_req(MCAP_MD_RECONNECT_MDL_REQ, mdl->mdlid);
+	if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) {
+		g_free(cmd);
+		return FALSE;
+	}
+
+	mdl->state = MDL_WAITING;
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = mcap_mdl_ref(mdl);
+	con->cb.op = reconnect_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	mcl->state = MCL_ACTIVE;
+	mcl->priv_data = con;
+
+	mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer,
+									mcl);
+	return TRUE;
+}
+
+static gboolean send_delete_req(struct mcap_mcl *mcl,
+						struct mcap_mdl_op_cb *con,
+						uint16_t mdlid,
+						GError **err)
+{
+	mcap_md_req *cmd;
+
+	cmd = create_req(MCAP_MD_DELETE_MDL_REQ, mdlid);
+	if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) {
+		g_free(cmd);
+		return FALSE;
+	}
+
+	mcl->priv_data = con;
+
+	mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer,
+									mcl);
+	return TRUE;
+}
+
+gboolean mcap_delete_all_mdls(struct mcap_mcl *mcl,
+					mcap_mdl_notify_cb delete_cb,
+					gpointer user_data,
+					GDestroyNotify destroy,
+					GError **err)
+{
+	GSList *l;
+	struct mcap_mdl *mdl;
+	struct mcap_mdl_op_cb *con;
+
+	DBG("MCL in state: %d", mcl->state);
+	if (!mcl->mdls) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+				"There are not MDLs created");
+		return FALSE;
+	}
+
+	for (l = mcl->mdls; l; l = l->next) {
+		mdl = l->data;
+		if (mdl->state != MDL_WAITING)
+			mdl->state = MDL_DELETING;
+	}
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = NULL;
+	con->cb.notify = delete_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+
+	if (!send_delete_req(mcl, con, MCAP_ALL_MDLIDS, err)) {
+		g_free(con);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+gboolean mcap_delete_mdl(struct mcap_mdl *mdl, mcap_mdl_notify_cb delete_cb,
+							gpointer user_data,
+							GDestroyNotify destroy,
+							GError **err)
+{
+	struct mcap_mcl *mcl= mdl->mcl;
+	struct mcap_mdl_op_cb *con;
+	GSList *l;
+
+	l = g_slist_find(mcl->mdls, mdl);
+
+	if (!l) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_MDL,
+					"%s" , error2str(MCAP_INVALID_MDEP));
+		return FALSE;
+	}
+
+	if (mdl->state == MDL_WAITING) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+							"Mdl is not created");
+		return FALSE;
+	}
+
+	mdl->state = MDL_DELETING;
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = mcap_mdl_ref(mdl);
+	con->cb.notify = delete_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	if (!send_delete_req(mcl, con, mdl->mdlid, err)) {
+		mcap_mdl_unref(con->mdl);
+		g_free(con);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+gboolean mcap_mdl_abort(struct mcap_mdl *mdl, mcap_mdl_notify_cb abort_cb,
+							gpointer user_data,
+							GDestroyNotify destroy,
+							GError **err)
+{
+	struct mcap_mdl_op_cb *con;
+	struct mcap_mcl *mcl = mdl->mcl;
+	mcap_md_req *cmd;
+
+	if (mdl->state != MDL_WAITING) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_FAILED,
+							"Mdl in invalid state");
+		return FALSE;
+	}
+
+	cmd = create_req(MCAP_MD_ABORT_MDL_REQ, mdl->mdlid);
+	if (!mcap_send_std_opcode(mcl, cmd, sizeof(mcap_md_req), err)) {
+		g_free(cmd);
+		return FALSE;
+	}
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = mcap_mdl_ref(mdl);
+	con->cb.notify = abort_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	mcl->priv_data = con;
+	mcl->tid = g_timeout_add_seconds(RESPONSE_TIMER, wait_response_timer,
+									mcl);
+	return TRUE;
+}
+
+static struct mcap_mcl *find_mcl(GSList *list, const bdaddr_t *addr)
+{
+	struct mcap_mcl *mcl;
+
+	for (; list; list = list->next) {
+		mcl = list->data;
+
+		if (!bacmp(&mcl->addr, addr))
+			return mcl;
+	}
+
+	return NULL;
+}
+
+int mcap_mdl_get_fd(struct mcap_mdl *mdl)
+{
+	if (!mdl || mdl->state != MDL_CONNECTED)
+		return -ENOTCONN;
+
+	return g_io_channel_unix_get_fd(mdl->dc);
+}
+
+uint16_t mcap_mdl_get_mdlid(struct mcap_mdl *mdl)
+{
+	if (!mdl)
+		return MCAP_MDLID_RESERVED;
+
+	return mdl->mdlid;
+}
+
+static void close_mcl(struct mcap_mcl *mcl, gboolean cache_requested)
+{
+	gboolean save = ((!(mcl->ctrl & MCAP_CTRL_FREE)) && cache_requested);
+
+	RELEASE_TIMER(mcl);
+
+	if (mcl->cc) {
+		g_io_channel_shutdown(mcl->cc, TRUE, NULL);
+		g_io_channel_unref(mcl->cc);
+		mcl->cc = NULL;
+	}
+
+	if (mcl->wid) {
+		g_source_remove(mcl->wid);
+		mcl->wid = 0;
+	}
+
+	if (mcl->lcmd) {
+		g_free(mcl->lcmd);
+		mcl->lcmd = NULL;
+	}
+
+	if (mcl->priv_data)
+		free_mcl_priv_data(mcl);
+
+	g_slist_foreach(mcl->mdls, (GFunc) shutdown_mdl, NULL);
+
+	mcap_sync_stop(mcl);
+
+	mcl->state = MCL_IDLE;
+
+	if (save)
+		return;
+
+	g_slist_foreach(mcl->mdls, (GFunc) mcap_mdl_unref, NULL);
+	g_slist_free(mcl->mdls);
+	mcl->mdls = NULL;
+}
+
+static void mcap_mcl_shutdown(struct mcap_mcl *mcl)
+{
+	close_mcl(mcl, TRUE);
+}
+
+static void mcap_mcl_release(struct mcap_mcl *mcl)
+{
+	close_mcl(mcl, FALSE);
+}
+
+static void mcap_cache_mcl(struct mcap_mcl *mcl)
+{
+	GSList *l;
+	struct mcap_mcl *last;
+	int len;
+
+	if (mcl->ctrl & MCAP_CTRL_CACHED)
+		return;
+
+	mcl->mi->mcls = g_slist_remove(mcl->mi->mcls, mcl);
+
+	if (mcl->ctrl & MCAP_CTRL_NOCACHE) {
+		mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl);
+		mcap_mcl_release(mcl);
+		mcap_mcl_unref(mcl);
+		return;
+	}
+
+	DBG("Caching MCL");
+
+	len = g_slist_length(mcl->mi->cached);
+	if (len == MAX_CACHED) {
+		/* Remove the latest cached mcl */
+		l = g_slist_last(mcl->mi->cached);
+		last = l->data;
+		mcl->mi->cached = g_slist_remove(mcl->mi->cached, last);
+		last->ctrl &= ~MCAP_CTRL_CACHED;
+		if (last->ctrl & MCAP_CTRL_CONN) {
+			/* We have to release this MCL if */
+			/* connection is not successful    */
+			last->ctrl |= MCAP_CTRL_FREE;
+		} else {
+			mcap_mcl_release(last);
+			last->mi->mcl_uncached_cb(last, last->mi->user_data);
+		}
+		mcap_mcl_unref(last);
+	}
+
+	mcl->mi->cached = g_slist_prepend(mcl->mi->cached, mcl);
+	mcl->ctrl |= MCAP_CTRL_CACHED;
+	mcap_mcl_shutdown(mcl);
+}
+
+static void mcap_uncache_mcl(struct mcap_mcl *mcl)
+{
+	if (!(mcl->ctrl & MCAP_CTRL_CACHED))
+		return;
+
+	DBG("Got MCL from cache");
+
+	mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl);
+	mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls, mcl);
+	mcl->ctrl &= ~MCAP_CTRL_CACHED;
+	mcl->ctrl &= ~MCAP_CTRL_FREE;
+}
+
+void mcap_close_mcl(struct mcap_mcl *mcl, gboolean cache)
+{
+	if (!mcl)
+		return;
+
+	if (mcl->ctrl & MCAP_CTRL_FREE) {
+		mcap_mcl_release(mcl);
+		return;
+	}
+
+	if (!cache)
+		mcl->ctrl |= MCAP_CTRL_NOCACHE;
+
+	if (mcl->cc) {
+		g_io_channel_shutdown(mcl->cc, TRUE, NULL);
+		g_io_channel_unref(mcl->cc);
+		mcl->cc = NULL;
+		mcl->state = MCL_IDLE;
+	} else if ((mcl->ctrl & MCAP_CTRL_CACHED) &&
+					(mcl->ctrl & MCAP_CTRL_NOCACHE)) {
+		mcl->ctrl &= ~MCAP_CTRL_CACHED;
+		mcl->mi->cached = g_slist_remove(mcl->mi->cached, mcl);
+		mcap_mcl_release(mcl);
+		mcap_mcl_unref(mcl);
+	}
+}
+
+struct mcap_mcl *mcap_mcl_ref(struct mcap_mcl *mcl)
+{
+	mcl->ref++;
+
+	DBG("mcap_mcl_ref(%p): ref=%d", mcl, mcl->ref);
+
+	return mcl;
+}
+
+void mcap_mcl_unref(struct mcap_mcl *mcl)
+{
+	mcl->ref--;
+
+	DBG("mcap_mcl_unref(%p): ref=%d", mcl, mcl->ref);
+
+	if (mcl->ref > 0)
+		return;
+
+	mcap_mcl_release(mcl);
+	mcap_instance_unref(mcl->mi);
+	g_free(mcl->cb);
+	g_free(mcl);
+}
+
+static gboolean parse_set_opts(struct mcap_mdl_cb *mdl_cb, GError **err,
+						McapMclCb cb1, va_list args)
+{
+	McapMclCb cb = cb1;
+	struct mcap_mdl_cb *c;
+
+	c = g_new0(struct mcap_mdl_cb, 1);
+
+	while (cb != MCAP_MDL_CB_INVALID) {
+		switch (cb) {
+		case MCAP_MDL_CB_CONNECTED:
+			c->mdl_connected = va_arg(args, mcap_mdl_event_cb);
+			break;
+		case MCAP_MDL_CB_CLOSED:
+			c->mdl_closed = va_arg(args, mcap_mdl_event_cb);
+			break;
+		case MCAP_MDL_CB_DELETED:
+			c->mdl_deleted = va_arg(args, mcap_mdl_event_cb);
+			break;
+		case MCAP_MDL_CB_ABORTED:
+			c->mdl_aborted = va_arg(args, mcap_mdl_event_cb);
+			break;
+		case MCAP_MDL_CB_REMOTE_CONN_REQ:
+			c->mdl_conn_req = va_arg(args,
+						mcap_remote_mdl_conn_req_cb);
+			break;
+		case MCAP_MDL_CB_REMOTE_RECONN_REQ:
+			c->mdl_reconn_req = va_arg(args,
+						mcap_remote_mdl_reconn_req_cb);
+			break;
+		default:
+			g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+						"Unknown option %d", cb);
+			g_free(c);
+			return FALSE;
+		}
+		cb = va_arg(args, int);
+	}
+
+	/* Set new callbacks */
+	if (c->mdl_connected)
+		mdl_cb->mdl_connected = c->mdl_connected;
+	if (c->mdl_closed)
+		mdl_cb->mdl_closed = c->mdl_closed;
+	if (c->mdl_deleted)
+		mdl_cb->mdl_deleted = c->mdl_deleted;
+	if (c->mdl_aborted)
+		mdl_cb->mdl_aborted = c->mdl_aborted;
+	if (c->mdl_conn_req)
+		mdl_cb->mdl_conn_req = c->mdl_conn_req;
+	if (c->mdl_reconn_req)
+		mdl_cb->mdl_reconn_req = c->mdl_reconn_req;
+
+	g_free(c);
+
+	return TRUE;
+}
+
+gboolean mcap_mcl_set_cb(struct mcap_mcl *mcl, gpointer user_data,
+					GError **gerr, McapMclCb cb1, ...)
+{
+	va_list args;
+	gboolean ret;
+
+	va_start(args, cb1);
+	ret = parse_set_opts(mcl->cb, gerr, cb1, args);
+	va_end(args);
+
+	if (!ret)
+		return FALSE;
+
+	mcl->cb->user_data = user_data;
+	return TRUE;
+}
+
+void mcap_mcl_get_addr(struct mcap_mcl *mcl, bdaddr_t *addr)
+{
+	bacpy(addr, &mcl->addr);
+}
+
+static void mcap_del_mdl(gpointer elem, gpointer user_data)
+{
+	struct mcap_mdl *mdl = elem;
+	gboolean notify = *(gboolean *) user_data;
+
+	shutdown_mdl(mdl);
+	if (notify)
+		mdl->mcl->cb->mdl_deleted(mdl, mdl->mcl->cb->user_data);
+
+	mcap_mdl_unref(mdl);
+}
+
+static gboolean check_cmd_req_length(struct mcap_mcl *mcl, void *cmd,
+				uint32_t rlen, uint32_t explen, uint8_t rspcod)
+{
+	mcap_md_req *req;
+	uint16_t mdl_id;
+
+	if (rlen != explen) {
+		if (rlen >= sizeof(mcap_md_req)) {
+			req = cmd;
+			mdl_id = ntohs(req->mdl);
+		} else {
+			/* We can't get mdlid */
+			mdl_id = MCAP_MDLID_RESERVED;
+		}
+		mcap_send_cmd(mcl, rspcod, MCAP_INVALID_PARAM_VALUE, mdl_id,
+								NULL, 0);
+		return FALSE;
+	}
+	return TRUE;
+}
+
+static void process_md_create_mdl_req(struct mcap_mcl *mcl, void *cmd,
+								uint32_t len)
+{
+	mcap_md_create_mdl_req *req;
+	struct mcap_mdl *mdl;
+	uint16_t mdl_id;
+	uint8_t mdep_id;
+	uint8_t cfga, conf;
+	uint8_t rsp;
+
+	if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_create_mdl_req),
+							MCAP_MD_CREATE_MDL_RSP))
+		return;
+
+	req = cmd;
+	mdl_id = ntohs(req->mdl);
+	if (mdl_id < MCAP_MDLID_INITIAL || mdl_id > MCAP_MDLID_FINAL) {
+		mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_INVALID_MDL,
+							mdl_id, NULL, 0);
+		return;
+	}
+
+	mdep_id = req->mdep;
+	if (mdep_id > MCAP_MDEPID_FINAL) {
+		mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_INVALID_MDEP,
+							mdl_id, NULL, 0);
+		return;
+	}
+
+	mdl = get_mdl(mcl, mdl_id);
+	if (mdl && (mdl->state == MDL_WAITING || mdl->state == MDL_DELETING )) {
+		/* Creation request arrives for a MDL that is being managed
+		* at current moment */
+		mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_MDL_BUSY,
+							mdl_id, NULL, 0);
+		return;
+	}
+
+	cfga = conf = req->conf;
+	/* Callback to upper layer */
+	rsp = mcl->cb->mdl_conn_req(mcl, mdep_id, mdl_id, &conf,
+							mcl->cb->user_data);
+	if (mcl->state == MCL_IDLE) {
+		/* MCL has been closed int the callback */
+		return;
+	}
+
+	if (cfga != 0 && cfga != conf) {
+		/* Remote device set default configuration but upper profile */
+		/* has changed it. Protocol Error: force closing the MCL by */
+		/* remote device using UNSPECIFIED_ERROR response */
+		mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP,
+				MCAP_UNSPECIFIED_ERROR, mdl_id, NULL, 0);
+		return;
+	}
+	if (rsp != MCAP_SUCCESS) {
+		mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, rsp, mdl_id,
+								NULL, 0);
+		return;
+	}
+
+	if (!mdl) {
+		mdl = g_new0(struct mcap_mdl, 1);
+		mdl->mcl = mcap_mcl_ref(mcl);
+		mdl->mdlid = mdl_id;
+		mcl->mdls = g_slist_insert_sorted(mcl->mdls, mcap_mdl_ref(mdl),
+								compare_mdl);
+	} else if (mdl->state == MDL_CONNECTED) {
+		/* MCAP specification says that we should close the MCL if
+		 * it is open when we receive a MD_CREATE_MDL_REQ */
+		shutdown_mdl(mdl);
+	}
+
+	mdl->mdep_id = mdep_id;
+	mdl->state = MDL_WAITING;
+
+	mcl->state = MCL_PENDING;
+	mcap_send_cmd(mcl, MCAP_MD_CREATE_MDL_RSP, MCAP_SUCCESS, mdl_id,
+								&conf, 1);
+}
+
+static void process_md_reconnect_mdl_req(struct mcap_mcl *mcl, void *cmd,
+								uint32_t len)
+{
+	mcap_md_req *req;
+	struct mcap_mdl *mdl;
+	uint16_t mdl_id;
+	uint8_t rsp;
+
+	if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req),
+						MCAP_MD_RECONNECT_MDL_RSP))
+		return;
+
+	req = cmd;
+	mdl_id = ntohs(req->mdl);
+
+	mdl = get_mdl(mcl, mdl_id);
+	if (!mdl) {
+		mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_INVALID_MDL,
+							mdl_id, NULL, 0);
+		return;
+	} else if (mdl->state == MDL_WAITING || mdl->state == MDL_DELETING ) {
+		/* Creation request arrives for a MDL that is being managed
+		* at current moment */
+		mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_MDL_BUSY,
+							mdl_id, NULL, 0);
+		return;
+	}
+
+	/* Callback to upper layer */
+	rsp = mcl->cb->mdl_reconn_req(mdl, mcl->cb->user_data);
+	if (mcl->state == MCL_IDLE)
+		return;
+
+	if (rsp != MCAP_SUCCESS) {
+		mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, rsp, mdl_id,
+								NULL, 0);
+		return;
+	}
+
+	if (mdl->state == MDL_CONNECTED)
+		shutdown_mdl(mdl);
+
+	mdl->state = MDL_WAITING;
+	mcl->state = MCL_PENDING;
+	mcap_send_cmd(mcl, MCAP_MD_RECONNECT_MDL_RSP, MCAP_SUCCESS, mdl_id,
+								NULL, 0);
+}
+
+static void process_md_abort_mdl_req(struct mcap_mcl *mcl, void *cmd,
+								uint32_t len)
+{
+	mcap_md_req *req;
+	GSList *l;
+	struct mcap_mdl *mdl, *abrt;
+	uint16_t mdl_id;
+
+	if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req),
+							MCAP_MD_ABORT_MDL_RSP))
+		return;
+
+	req = cmd;
+	mdl_id = ntohs(req->mdl);
+	mcl->state = MCL_CONNECTED;
+	abrt = NULL;
+	for (l = mcl->mdls; l; l = l->next) {
+		mdl = l->data;
+		if (mdl_id == mdl->mdlid && mdl->state == MDL_WAITING) {
+			abrt = mdl;
+			if (mcl->state != MCL_CONNECTED)
+				break;
+			continue;
+		}
+		if (mdl->state == MDL_CONNECTED && mcl->state != MCL_ACTIVE)
+			mcl->state = MCL_ACTIVE;
+
+		if (abrt && mcl->state == MCL_ACTIVE)
+			break;
+	}
+
+	if (!abrt) {
+		mcap_send_cmd(mcl, MCAP_MD_ABORT_MDL_RSP, MCAP_INVALID_MDL,
+							mdl_id, NULL, 0);
+		return;
+	}
+
+	mcl->cb->mdl_aborted(abrt, mcl->cb->user_data);
+	abrt->state = MDL_CLOSED;
+	mcap_send_cmd(mcl, MCAP_MD_ABORT_MDL_RSP, MCAP_SUCCESS, mdl_id,
+								NULL, 0);
+}
+
+static void process_md_delete_mdl_req(struct mcap_mcl *mcl, void *cmd,
+								uint32_t len)
+{
+	mcap_md_req *req;
+	struct mcap_mdl *mdl, *aux;
+	uint16_t mdlid;
+	gboolean notify;
+	GSList *l;
+
+	if (!check_cmd_req_length(mcl, cmd, len, sizeof(mcap_md_req),
+							MCAP_MD_DELETE_MDL_RSP))
+		return;
+
+	req = cmd;
+	mdlid = ntohs(req->mdl);
+	if (mdlid == MCAP_ALL_MDLIDS) {
+		notify = FALSE;
+		g_slist_foreach(mcl->mdls, mcap_del_mdl, &notify);
+		g_slist_free(mcl->mdls);
+		mcl->mdls = NULL;
+		mcl->state = MCL_CONNECTED;
+		/* NULL mdl means ALL_MDLS */
+		mcl->cb->mdl_deleted(NULL, mcl->cb->user_data);
+		goto resp;
+	}
+
+	if (mdlid < MCAP_MDLID_INITIAL || mdlid > MCAP_MDLID_FINAL) {
+		mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_INVALID_MDL,
+								mdlid, NULL, 0);
+		return;
+	}
+
+	for (l = mcl->mdls, mdl = NULL; l; l = l->next) {
+		aux = l->data;
+		if (aux->mdlid == mdlid) {
+			mdl = aux;
+			break;
+		}
+	}
+
+	if (!mdl || mdl->state == MDL_WAITING) {
+		mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_INVALID_MDL,
+								mdlid, NULL, 0);
+		return;
+	}
+
+	mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+	update_mcl_state(mcl);
+	notify = TRUE;
+	mcap_del_mdl(mdl, &notify);
+
+resp:
+	mcap_send_cmd(mcl, MCAP_MD_DELETE_MDL_RSP, MCAP_SUCCESS, mdlid,
+								NULL, 0);
+}
+
+static void invalid_req_state(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	uint16_t mdlr;
+
+	error("Invalid cmd received (op code = %d) in state %d", cmd[0],
+								mcl->state);
+	/* Get previously mdlid sent to generate an appropriate
+	 * response if it is possible */
+	mdlr = len < sizeof(mcap_md_req) ? MCAP_MDLID_RESERVED :
+					ntohs(((mcap_md_req *) cmd)->mdl);
+	mcap_send_cmd(mcl, cmd[0]+1, MCAP_INVALID_OPERATION, mdlr, NULL, 0);
+}
+
+/* Function used to process commands depending of MCL state */
+static void proc_req_connected(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	switch (cmd[0]) {
+	case MCAP_MD_CREATE_MDL_REQ:
+		process_md_create_mdl_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_RECONNECT_MDL_REQ:
+		process_md_reconnect_mdl_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_DELETE_MDL_REQ:
+		process_md_delete_mdl_req(mcl, cmd, len);
+		break;
+	default:
+		invalid_req_state(mcl, cmd, len);
+	}
+}
+
+static void proc_req_pending(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	if (cmd[0] == MCAP_MD_ABORT_MDL_REQ)
+		process_md_abort_mdl_req(mcl, cmd, len);
+	else
+		invalid_req_state(mcl, cmd, len);
+}
+
+static void proc_req_active(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	switch (cmd[0]) {
+	case MCAP_MD_CREATE_MDL_REQ:
+		process_md_create_mdl_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_RECONNECT_MDL_REQ:
+		process_md_reconnect_mdl_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_DELETE_MDL_REQ:
+		process_md_delete_mdl_req(mcl, cmd, len);
+		break;
+	default:
+		invalid_req_state(mcl, cmd, len);
+	}
+}
+
+/* Function used to process replies */
+static gboolean check_err_rsp(struct mcap_mcl *mcl, mcap_rsp *rsp,
+				uint32_t rlen, uint32_t len, GError **gerr)
+{
+	mcap_md_req *cmdlast = (mcap_md_req *) mcl->lcmd;
+	int err = MCAP_ERROR_FAILED;
+	gboolean close = FALSE;
+	char *msg;
+
+	if (rsp->op == MCAP_ERROR_RSP) {
+		msg = "MCAP_ERROR_RSP received";
+		close = FALSE;
+		goto fail;
+	}
+
+	/* Check if the response matches with the last request */
+	if (rlen < sizeof(mcap_rsp) || (mcl->lcmd[0] + 1) != rsp->op) {
+		msg = "Protocol error";
+		close = FALSE;
+		goto fail;
+	}
+
+	if (rlen < len) {
+		msg = "Protocol error";
+		close = FALSE;
+		goto fail;
+	}
+
+	if (rsp->mdl != cmdlast->mdl) {
+		msg = "MDLID received doesn't match with MDLID sent";
+		close = TRUE;
+		goto fail;
+	}
+
+	if (rsp->rc == MCAP_REQUEST_NOT_SUPPORTED) {
+		msg = "Remote does not support opcodes";
+		mcl->ctrl &= ~MCAP_CTRL_STD_OP;
+		goto fail;
+	}
+
+	if (rsp->rc == MCAP_UNSPECIFIED_ERROR) {
+		msg = "Unspecified error";
+		close = TRUE;
+		goto fail;
+	}
+
+	if (rsp->rc != MCAP_SUCCESS) {
+		msg = error2str(rsp->rc);
+		err = rsp->rc;
+		goto fail;
+	}
+
+	return FALSE;
+
+fail:
+	g_set_error(gerr, MCAP_ERROR, err, "%s", msg);
+	return close;
+}
+
+static gboolean process_md_create_mdl_rsp(struct mcap_mcl *mcl,
+						mcap_rsp *rsp, uint32_t len)
+{
+	mcap_md_create_mdl_req *cmdlast = (mcap_md_create_mdl_req *) mcl->lcmd;
+	struct mcap_mdl_op_cb *conn = mcl->priv_data;
+	mcap_mdl_operation_conf_cb connect_cb = conn->cb.op_conf;
+	gpointer user_data = conn->user_data;
+	struct mcap_mdl *mdl = conn->mdl;
+	uint8_t conf = cmdlast->conf;
+	gboolean close;
+	GError *gerr = NULL;
+
+	close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp) + 1, &gerr);
+	g_free(mcl->lcmd);
+	mcl->lcmd = NULL;
+	mcl->req = MCL_AVAILABLE;
+
+	if (gerr)
+		goto fail;
+
+	/* Check if preferences changed */
+	if (conf != 0x00 && rsp->data[0] != conf) {
+		g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_FAILED,
+						"Configuration changed");
+		close = TRUE;
+		goto fail;
+	}
+
+	connect_cb(mdl, rsp->data[0], gerr, user_data);
+	return close;
+
+fail:
+	connect_cb(NULL, 0, gerr, user_data);
+	mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+	mcap_mdl_unref(mdl);
+	g_error_free(gerr);
+	update_mcl_state(mcl);
+	return close;
+}
+
+static gboolean process_md_reconnect_mdl_rsp(struct mcap_mcl *mcl,
+						mcap_rsp *rsp, uint32_t len)
+{
+	struct mcap_mdl_op_cb *reconn = mcl->priv_data;
+	mcap_mdl_operation_cb reconn_cb = reconn->cb.op;
+	gpointer user_data = reconn->user_data;
+	struct mcap_mdl *mdl = reconn->mdl;
+	GError *gerr = NULL;
+	gboolean close;
+
+	close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr);
+
+	g_free(mcl->lcmd);
+	mcl->lcmd = NULL;
+	mcl->req = MCL_AVAILABLE;
+
+	reconn_cb(mdl, gerr, user_data);
+	if (!gerr)
+		return close;
+
+	g_error_free(gerr);
+	shutdown_mdl(mdl);
+	update_mcl_state(mcl);
+
+	if (rsp->rc != MCAP_INVALID_MDL)
+		return close;
+
+	/* Remove cached mdlid */
+	mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+	mcl->cb->mdl_deleted(mdl, mcl->cb->user_data);
+	mcap_mdl_unref(mdl);
+
+	return close;
+}
+
+static gboolean process_md_abort_mdl_rsp(struct mcap_mcl *mcl,
+						mcap_rsp *rsp, uint32_t len)
+{
+	struct mcap_mdl_op_cb *abrt = mcl->priv_data;
+	mcap_mdl_notify_cb abrt_cb = abrt->cb.notify;
+	gpointer user_data = abrt->user_data;
+	struct mcap_mdl *mdl = abrt->mdl;
+	GError *gerr = NULL;
+	gboolean close;
+
+	close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr);
+
+	g_free(mcl->lcmd);
+	mcl->lcmd = NULL;
+	mcl->req = MCL_AVAILABLE;
+
+	abrt_cb(gerr, user_data);
+	shutdown_mdl(mdl);
+
+	if (len >= sizeof(mcap_rsp) && rsp->rc == MCAP_INVALID_MDL) {
+		mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+		mcl->cb->mdl_deleted(mdl, mcl->cb->user_data);
+		mcap_mdl_unref(mdl);
+	}
+
+	if (gerr)
+		g_error_free(gerr);
+
+	update_mcl_state(mcl);
+
+	return close;
+}
+
+static void restore_mdl(gpointer elem, gpointer data)
+{
+	struct mcap_mdl *mdl = elem;
+
+	if (mdl->state == MDL_DELETING) {
+		if (mdl->dc)
+			mdl->state = MDL_CONNECTED;
+		else
+			mdl->state = MDL_CLOSED;
+	} else if (mdl->state == MDL_CLOSED)
+		mdl->mcl->cb->mdl_closed(mdl, mdl->mcl->cb->user_data);
+}
+
+static void check_mdl_del_err(struct mcap_mdl *mdl, mcap_rsp *rsp)
+{
+	if (rsp->rc != MCAP_ERROR_INVALID_MDL) {
+		restore_mdl(mdl, NULL);
+		return;
+	}
+
+	/* MDL does not exist in remote side, we can delete it */
+	mdl->mcl->mdls = g_slist_remove(mdl->mcl->mdls, mdl);
+	mcap_mdl_unref(mdl);
+}
+
+static gboolean process_md_delete_mdl_rsp(struct mcap_mcl *mcl, mcap_rsp *rsp,
+								uint32_t len)
+{
+	struct mcap_mdl_op_cb *del = mcl->priv_data;
+	struct mcap_mdl *mdl = del->mdl;
+	mcap_mdl_notify_cb deleted_cb = del->cb.notify;
+	gpointer user_data = del->user_data;
+	mcap_md_req *cmdlast = (mcap_md_req *) mcl->lcmd;
+	uint16_t mdlid = ntohs(cmdlast->mdl);
+	GError *gerr = NULL;
+	gboolean close;
+	gboolean notify = FALSE;
+
+	close = check_err_rsp(mcl, rsp, len, sizeof(mcap_rsp), &gerr);
+
+	g_free(mcl->lcmd);
+	mcl->lcmd = NULL;
+	mcl->req = MCL_AVAILABLE;
+
+	if (gerr) {
+		if (mdl)
+			check_mdl_del_err(mdl, rsp);
+		else
+			g_slist_foreach(mcl->mdls, restore_mdl, NULL);
+		deleted_cb(gerr, user_data);
+		g_error_free(gerr);
+		return close;
+	}
+
+	if (mdlid == MCAP_ALL_MDLIDS) {
+		g_slist_foreach(mcl->mdls, mcap_del_mdl, &notify);
+		g_slist_free(mcl->mdls);
+		mcl->mdls = NULL;
+		mcl->state = MCL_CONNECTED;
+	} else {
+		mcl->mdls = g_slist_remove(mcl->mdls, mdl);
+		update_mcl_state(mcl);
+		mcap_del_mdl(mdl, &notify);
+	}
+
+	deleted_cb(gerr, user_data);
+
+	return close;
+}
+
+static void post_process_rsp(struct mcap_mcl *mcl, struct mcap_mdl_op_cb *op)
+{
+	if (mcl->priv_data != op) {
+		/* Queued MCAP request in some callback. */
+		/* We should not delete the mcl private data */
+		free_mcap_mdl_op(op);
+	} else {
+		/* This is not a queued request. It's safe */
+		/* delete the mcl private data here. */
+		free_mcl_priv_data(mcl);
+	}
+}
+
+static void proc_response(struct mcap_mcl *mcl, void *buf, uint32_t len)
+{
+	struct mcap_mdl_op_cb *op = mcl->priv_data;
+	mcap_rsp *rsp = buf;
+	gboolean close;
+
+	RELEASE_TIMER(mcl);
+
+	switch (mcl->lcmd[0] + 1) {
+	case MCAP_MD_CREATE_MDL_RSP:
+		close = process_md_create_mdl_rsp(mcl, rsp, len);
+		post_process_rsp(mcl, op);
+		break;
+	case MCAP_MD_RECONNECT_MDL_RSP:
+		close = process_md_reconnect_mdl_rsp(mcl, rsp, len);
+		post_process_rsp(mcl, op);
+		break;
+	case MCAP_MD_ABORT_MDL_RSP:
+		close = process_md_abort_mdl_rsp(mcl, rsp, len);
+		post_process_rsp(mcl, op);
+		break;
+	case MCAP_MD_DELETE_MDL_RSP:
+		close = process_md_delete_mdl_rsp(mcl, rsp, len);
+		post_process_rsp(mcl, op);
+		break;
+	default:
+		DBG("Unknown cmd response received (op code = %d)", rsp->op);
+		close = TRUE;
+		break;
+	}
+
+	if (close) {
+		mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data);
+		mcap_cache_mcl(mcl);
+	}
+}
+
+static void proc_cmd(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	GError *gerr = NULL;
+
+	if (cmd[0] > MCAP_MD_SYNC_INFO_IND ||
+					(cmd[0] > MCAP_MD_DELETE_MDL_RSP &&
+					cmd[0] < MCAP_MD_SYNC_CAP_REQ)) {
+		error("Unknown cmd received (op code = %d)", cmd[0]);
+		mcap_send_cmd(mcl, MCAP_ERROR_RSP, MCAP_INVALID_OP_CODE,
+						MCAP_MDLID_RESERVED, NULL, 0);
+		return;
+	}
+
+	if (cmd[0] >= MCAP_MD_SYNC_CAP_REQ &&
+					cmd[0] <= MCAP_MD_SYNC_INFO_IND) {
+		proc_sync_cmd(mcl, cmd, len);
+		return;
+	}
+
+	if (!(mcl->ctrl & MCAP_CTRL_STD_OP)) {
+		/* In case the remote device doesn't work correctly */
+		error("Remote device does not support opcodes, cmd ignored");
+		return;
+	}
+
+	if (mcl->req == MCL_WAITING_RSP) {
+		if (cmd[0] & 0x01) {
+			/* Request arrived when a response is expected */
+			if (mcl->role == MCL_INITIATOR)
+				/* ignore */
+				return;
+			/* Initiator will ignore our last request */
+			RELEASE_TIMER(mcl);
+			mcl->req = MCL_AVAILABLE;
+			g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_REQ_IGNORED,
+				"Initiator sent a request with more priority");
+			mcap_notify_error(mcl, gerr);
+			proc_req[mcl->state](mcl, cmd, len);
+			return;
+		}
+		proc_response(mcl, cmd, len);
+	} else if (cmd[0] & 0x01)
+		proc_req[mcl->state](mcl, cmd, len);
+}
+
+static gboolean mdl_event_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
+{
+
+	struct mcap_mdl *mdl = data;
+	gboolean notify;
+
+	DBG("Close MDL %d", mdl->mdlid);
+
+	notify = (mdl->state == MDL_CONNECTED);
+	shutdown_mdl(mdl);
+
+	update_mcl_state(mdl->mcl);
+
+	if (notify) {
+		/*Callback to upper layer */
+		mdl->mcl->cb->mdl_closed(mdl, mdl->mcl->cb->user_data);
+	}
+
+	return FALSE;
+}
+
+static void mcap_connect_mdl_cb(GIOChannel *chan, GError *conn_err,
+								gpointer data)
+{
+	struct mcap_mdl_op_cb *con = data;
+	struct mcap_mdl *mdl = con->mdl;
+	mcap_mdl_operation_cb cb = con->cb.op;
+	gpointer user_data = con->user_data;
+
+	DBG("mdl connect callback");
+
+	if (conn_err) {
+		DBG("ERROR: mdl connect callback");
+		mdl->state = MDL_CLOSED;
+		g_io_channel_unref(mdl->dc);
+		mdl->dc = NULL;
+		cb(mdl, conn_err, user_data);
+		return;
+	}
+
+	mdl->state = MDL_CONNECTED;
+	mdl->wid = g_io_add_watch_full(mdl->dc, G_PRIORITY_DEFAULT,
+					G_IO_ERR | G_IO_HUP | G_IO_NVAL,
+					(GIOFunc) mdl_event_cb,
+					mcap_mdl_ref(mdl),
+					(GDestroyNotify) mcap_mdl_unref);
+
+	cb(mdl, conn_err, user_data);
+}
+
+gboolean mcap_connect_mdl(struct mcap_mdl *mdl, uint8_t mode,
+					uint16_t dcpsm,
+					mcap_mdl_operation_cb connect_cb,
+					gpointer user_data,
+					GDestroyNotify destroy,
+					GError **err)
+{
+	struct mcap_mdl_op_cb *con;
+
+	if (mdl->state != MDL_WAITING) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_MDL,
+					"%s", error2str(MCAP_INVALID_MDL));
+		return FALSE;
+	}
+
+	if ((mode != L2CAP_MODE_ERTM) && (mode != L2CAP_MODE_STREAMING)) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+						"Invalid MDL configuration");
+		return FALSE;
+	}
+
+	con = g_new0(struct mcap_mdl_op_cb, 1);
+	con->mdl = mcap_mdl_ref(mdl);
+	con->cb.op = connect_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	mdl->dc = bt_io_connect(mcap_connect_mdl_cb, con,
+				(GDestroyNotify) free_mcap_mdl_op, err,
+				BT_IO_OPT_SOURCE_BDADDR, &mdl->mcl->mi->src,
+				BT_IO_OPT_DEST_BDADDR, &mdl->mcl->addr,
+				BT_IO_OPT_PSM, dcpsm,
+				BT_IO_OPT_MTU, MCAP_DC_MTU,
+				BT_IO_OPT_SEC_LEVEL, mdl->mcl->mi->sec,
+				BT_IO_OPT_MODE, mode,
+				BT_IO_OPT_INVALID);
+	if (!mdl->dc) {
+		DBG("MDL Connection error");
+		mdl->state = MDL_CLOSED;
+		mcap_mdl_unref(con->mdl);
+		g_free(con);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static gboolean mcl_control_cb(GIOChannel *chan, GIOCondition cond,
+								gpointer data)
+{
+	GError *gerr = NULL;
+	struct mcap_mcl *mcl = data;
+	int sk, len;
+	uint8_t buf[MCAP_CC_MTU];
+
+	if (cond & (G_IO_ERR | G_IO_HUP | G_IO_NVAL))
+		goto fail;
+
+	sk = g_io_channel_unix_get_fd(chan);
+	len = read(sk, buf, sizeof(buf));
+	if (len < 0)
+		goto fail;
+
+	proc_cmd(mcl, buf, (uint32_t) len);
+	return TRUE;
+
+fail:
+	if (mcl->state != MCL_IDLE) {
+		if (mcl->req == MCL_WAITING_RSP) {
+			/* notify error in pending callback */
+			g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_MCL_CLOSED,
+								"MCL closed");
+			mcap_notify_error(mcl, gerr);
+			g_error_free(gerr);
+		}
+		mcl->mi->mcl_disconnected_cb(mcl, mcl->mi->user_data);
+	}
+	mcap_cache_mcl(mcl);
+	return FALSE;
+}
+
+static void mcap_connect_mcl_cb(GIOChannel *chan, GError *conn_err,
+							gpointer user_data)
+{
+	char dstaddr[18];
+	struct connect_mcl *con = user_data;
+	struct mcap_mcl *aux, *mcl = con->mcl;
+	mcap_mcl_connect_cb connect_cb = con->connect_cb;
+	gpointer data = con->user_data;
+	GError *gerr = NULL;
+
+	mcl->ctrl &= ~MCAP_CTRL_CONN;
+
+	if (conn_err) {
+		if (mcl->ctrl & MCAP_CTRL_FREE) {
+			mcap_mcl_release(mcl);
+			mcl->mi->mcl_uncached_cb(mcl, mcl->mi->user_data);
+		}
+		connect_cb(NULL, conn_err, data);
+		return;
+	}
+
+	ba2str(&mcl->addr, dstaddr);
+
+	aux = find_mcl(mcl->mi->mcls, &mcl->addr);
+	if (aux) {
+		/* Double MCL connection case */
+		error("MCL error: Device %s is already connected", dstaddr);
+		g_set_error(&gerr, MCAP_ERROR, MCAP_ERROR_ALREADY_EXISTS,
+					"MCL %s is already connected", dstaddr);
+		connect_cb(NULL, gerr, data);
+		g_error_free(gerr);
+		return;
+	}
+
+	mcl->state = MCL_CONNECTED;
+	mcl->role = MCL_INITIATOR;
+	mcl->req = MCL_AVAILABLE;
+	mcl->ctrl |= MCAP_CTRL_STD_OP;
+
+	mcap_sync_init(mcl);
+
+	if (mcl->ctrl & MCAP_CTRL_CACHED)
+		mcap_uncache_mcl(mcl);
+	else {
+		mcl->ctrl &= ~MCAP_CTRL_FREE;
+		mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls,
+							mcap_mcl_ref(mcl));
+	}
+
+	mcl->wid = g_io_add_watch_full(mcl->cc, G_PRIORITY_DEFAULT,
+				G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
+				(GIOFunc) mcl_control_cb,
+				mcap_mcl_ref(mcl),
+				(GDestroyNotify) mcap_mcl_unref);
+	connect_cb(mcl, gerr, data);
+}
+
+static void set_mdl_properties(GIOChannel *chan, struct mcap_mdl *mdl)
+{
+	struct mcap_mcl *mcl = mdl->mcl;
+
+	mdl->state = MDL_CONNECTED;
+	mdl->dc = g_io_channel_ref(chan);
+	mdl->wid = g_io_add_watch_full(mdl->dc, G_PRIORITY_DEFAULT,
+					G_IO_ERR | G_IO_HUP | G_IO_NVAL,
+					(GIOFunc) mdl_event_cb,
+					mcap_mdl_ref(mdl),
+					(GDestroyNotify) mcap_mdl_unref);
+
+	mcl->state = MCL_ACTIVE;
+	mcl->cb->mdl_connected(mdl, mcl->cb->user_data);
+}
+
+static void mcl_io_destroy(gpointer data)
+{
+	struct connect_mcl *con = data;
+
+	mcap_mcl_unref(con->mcl);
+	if (con->destroy)
+		con->destroy(con->user_data);
+	g_free(con);
+}
+
+gboolean mcap_create_mcl(struct mcap_instance *mi,
+				const bdaddr_t *addr,
+				uint16_t ccpsm,
+				mcap_mcl_connect_cb connect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err)
+{
+	struct mcap_mcl *mcl;
+	struct connect_mcl *con;
+
+	mcl = find_mcl(mi->mcls, addr);
+	if (mcl) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_ALREADY_EXISTS,
+					"MCL is already connected.");
+		return FALSE;
+	}
+
+	mcl = find_mcl(mi->cached, addr);
+	if (!mcl) {
+		mcl = g_new0(struct mcap_mcl, 1);
+		mcl->mi = mcap_instance_ref(mi);
+		mcl->state = MCL_IDLE;
+		bacpy(&mcl->addr, addr);
+		set_default_cb(mcl);
+		mcl->next_mdl = (rand() % MCAP_MDLID_FINAL) + 1;
+	}
+
+	mcl->ctrl |= MCAP_CTRL_CONN;
+
+	con = g_new0(struct connect_mcl, 1);
+	con->mcl = mcap_mcl_ref(mcl);
+	con->connect_cb = connect_cb;
+	con->destroy = destroy;
+	con->user_data = user_data;
+
+	mcl->cc = bt_io_connect(mcap_connect_mcl_cb, con,
+				mcl_io_destroy, err,
+				BT_IO_OPT_SOURCE_BDADDR, &mi->src,
+				BT_IO_OPT_DEST_BDADDR, addr,
+				BT_IO_OPT_PSM, ccpsm,
+				BT_IO_OPT_MTU, MCAP_CC_MTU,
+				BT_IO_OPT_SEC_LEVEL, mi->sec,
+				BT_IO_OPT_MODE, L2CAP_MODE_ERTM,
+				BT_IO_OPT_INVALID);
+	if (!mcl->cc) {
+		mcl->ctrl &= ~MCAP_CTRL_CONN;
+		if (mcl->ctrl & MCAP_CTRL_FREE) {
+			mcap_mcl_release(mcl);
+			mcl->mi->mcl_uncached_cb(mcl, mcl->mi->user_data);
+		}
+		mcap_mcl_unref(con->mcl);
+		g_free(con);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static void connect_dc_event_cb(GIOChannel *chan, GError *gerr,
+							gpointer user_data)
+{
+	struct mcap_instance *mi = user_data;
+	struct mcap_mcl *mcl;
+	struct mcap_mdl *mdl;
+	GError *err = NULL;
+	bdaddr_t dst;
+	GSList *l;
+
+	if (gerr)
+		return;
+
+	bt_io_get(chan, &err, BT_IO_OPT_DEST_BDADDR, &dst, BT_IO_OPT_INVALID);
+	if (err) {
+		error("%s", err->message);
+		g_error_free(err);
+		goto drop;
+	}
+
+	mcl = find_mcl(mi->mcls, &dst);
+	if (!mcl || mcl->state != MCL_PENDING)
+		goto drop;
+
+	for (l = mcl->mdls; l; l = l->next) {
+		mdl = l->data;
+		if (mdl->state == MDL_WAITING) {
+			set_mdl_properties(chan, mdl);
+			return;
+		}
+	}
+
+drop:
+	g_io_channel_shutdown(chan, TRUE, NULL);
+}
+
+static void set_mcl_conf(GIOChannel *chan, struct mcap_mcl *mcl)
+{
+	gboolean reconn;
+
+	mcl->state = MCL_CONNECTED;
+	mcl->role = MCL_ACCEPTOR;
+	mcl->req = MCL_AVAILABLE;
+	mcl->cc = g_io_channel_ref(chan);
+	mcl->ctrl |= MCAP_CTRL_STD_OP;
+
+	mcap_sync_init(mcl);
+
+	reconn = (mcl->ctrl & MCAP_CTRL_CACHED);
+	if (reconn)
+		mcap_uncache_mcl(mcl);
+	else
+		mcl->mi->mcls = g_slist_prepend(mcl->mi->mcls,
+							mcap_mcl_ref(mcl));
+
+	mcl->wid = g_io_add_watch_full(mcl->cc, G_PRIORITY_DEFAULT,
+				G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
+				(GIOFunc) mcl_control_cb,
+				mcap_mcl_ref(mcl),
+				(GDestroyNotify) mcap_mcl_unref);
+
+	/* Callback to report new MCL */
+	if (reconn)
+		mcl->mi->mcl_reconnected_cb(mcl, mcl->mi->user_data);
+	else
+		mcl->mi->mcl_connected_cb(mcl, mcl->mi->user_data);
+}
+
+static void connect_mcl_event_cb(GIOChannel *chan, GError *gerr,
+							gpointer user_data)
+{
+	struct mcap_instance *mi = user_data;
+	struct mcap_mcl *mcl;
+	bdaddr_t dst;
+	char address[18], srcstr[18];
+	GError *err = NULL;
+
+	if (gerr)
+		return;
+
+	bt_io_get(chan, &err,
+			BT_IO_OPT_DEST_BDADDR, &dst,
+			BT_IO_OPT_DEST, address,
+			BT_IO_OPT_INVALID);
+	if (err) {
+		error("%s", err->message);
+		g_error_free(err);
+		goto drop;
+	}
+
+	ba2str(&mi->src, srcstr);
+	mcl = find_mcl(mi->mcls, &dst);
+	if (mcl) {
+		error("Control channel already created with %s on adapter %s",
+				address, srcstr);
+		goto drop;
+	}
+
+	mcl = find_mcl(mi->cached, &dst);
+	if (!mcl) {
+		mcl = g_new0(struct mcap_mcl, 1);
+		mcl->mi = mcap_instance_ref(mi);
+		bacpy(&mcl->addr, &dst);
+		set_default_cb(mcl);
+		mcl->next_mdl = (rand() % MCAP_MDLID_FINAL) + 1;
+	}
+
+	set_mcl_conf(chan, mcl);
+
+	return;
+drop:
+	g_io_channel_shutdown(chan, TRUE, NULL);
+}
+
+struct mcap_instance *mcap_create_instance(const bdaddr_t *src,
+					BtIOSecLevel sec,
+					uint16_t ccpsm,
+					uint16_t dcpsm,
+					mcap_mcl_event_cb mcl_connected,
+					mcap_mcl_event_cb mcl_reconnected,
+					mcap_mcl_event_cb mcl_disconnected,
+					mcap_mcl_event_cb mcl_uncached,
+					mcap_info_ind_event_cb mcl_sync_info_ind,
+					gpointer user_data,
+					GError **gerr)
+{
+	struct mcap_instance *mi;
+
+	if (sec < BT_IO_SEC_MEDIUM) {
+		g_set_error(gerr, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+				"Security level can't be minor of %d",
+				BT_IO_SEC_MEDIUM);
+		return NULL;
+	}
+
+	if (!(mcl_connected && mcl_reconnected &&
+			mcl_disconnected && mcl_uncached)) {
+		g_set_error(gerr, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+				"The callbacks can't be null");
+		return NULL;
+	}
+
+	mi = g_new0(struct mcap_instance, 1);
+
+	bacpy(&mi->src, src);
+
+	mi->sec = sec;
+	mi->mcl_connected_cb = mcl_connected;
+	mi->mcl_reconnected_cb = mcl_reconnected;
+	mi->mcl_disconnected_cb = mcl_disconnected;
+	mi->mcl_uncached_cb = mcl_uncached;
+	mi->mcl_sync_infoind_cb = mcl_sync_info_ind;
+	mi->user_data = user_data;
+	mi->csp_enabled = FALSE;
+
+	/* Listen incoming connections in control channel */
+	mi->ccio = bt_io_listen(connect_mcl_event_cb, NULL, mi,
+				NULL, gerr,
+				BT_IO_OPT_SOURCE_BDADDR, &mi->src,
+				BT_IO_OPT_PSM, ccpsm,
+				BT_IO_OPT_MTU, MCAP_CC_MTU,
+				BT_IO_OPT_SEC_LEVEL, sec,
+				BT_IO_OPT_MODE, L2CAP_MODE_ERTM,
+				BT_IO_OPT_INVALID);
+	if (!mi->ccio) {
+		error("%s", (*gerr)->message);
+		g_free(mi);
+		return NULL;
+	}
+
+	/* Listen incoming connections in data channels */
+	mi->dcio = bt_io_listen(connect_dc_event_cb, NULL, mi,
+				NULL, gerr,
+				BT_IO_OPT_SOURCE_BDADDR, &mi->src,
+				BT_IO_OPT_PSM, dcpsm,
+				BT_IO_OPT_MTU, MCAP_DC_MTU,
+				BT_IO_OPT_SEC_LEVEL, sec,
+				BT_IO_OPT_INVALID);
+	if (!mi->dcio) {
+		g_io_channel_shutdown(mi->ccio, TRUE, NULL);
+		g_io_channel_unref(mi->ccio);
+		mi->ccio = NULL;
+		error("%s", (*gerr)->message);
+		g_free(mi);
+		return NULL;
+	}
+
+	/* Initialize random seed to generate mdlids for this instance */
+	srand(time(NULL));
+
+	return mcap_instance_ref(mi);
+}
+
+void mcap_release_instance(struct mcap_instance *mi)
+{
+	GSList *l;
+
+	if (!mi)
+		return;
+
+	if (mi->ccio) {
+		g_io_channel_shutdown(mi->ccio, TRUE, NULL);
+		g_io_channel_unref(mi->ccio);
+		mi->ccio = NULL;
+	}
+
+	if (mi->dcio) {
+		g_io_channel_shutdown(mi->dcio, TRUE, NULL);
+		g_io_channel_unref(mi->dcio);
+		mi->dcio = NULL;
+	}
+
+	for (l = mi->mcls; l; l = l->next) {
+		mcap_mcl_release(l->data);
+		mcap_mcl_unref(l->data);
+	}
+
+	g_slist_free(mi->mcls);
+	mi->mcls = NULL;
+
+	for (l = mi->cached; l; l = l->next) {
+		mcap_mcl_release(l->data);
+		mcap_mcl_unref(l->data);
+	}
+
+	g_slist_free(mi->cached);
+	mi->cached = NULL;
+}
+
+struct mcap_instance *mcap_instance_ref(struct mcap_instance *mi)
+{
+	mi->ref++;
+
+	DBG("mcap_instance_ref(%p): ref=%d", mi, mi->ref);
+
+	return mi;
+}
+
+void mcap_instance_unref(struct mcap_instance *mi)
+{
+	mi->ref--;
+
+	DBG("mcap_instance_unref(%p): ref=%d", mi, mi->ref);
+
+	if (mi->ref > 0)
+		return;
+
+	mcap_release_instance(mi);
+	g_free(mi);
+}
+
+uint16_t mcap_get_ctrl_psm(struct mcap_instance *mi, GError **err)
+{
+	uint16_t lpsm;
+
+	if (!(mi && mi->ccio)) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+			"Invalid MCAP instance");
+		return 0;
+	}
+
+	if (!bt_io_get(mi->ccio, err, BT_IO_OPT_PSM, &lpsm, BT_IO_OPT_INVALID))
+		return 0;
+
+	return lpsm;
+}
+
+uint16_t mcap_get_data_psm(struct mcap_instance *mi, GError **err)
+{
+	uint16_t lpsm;
+
+	if (!(mi && mi->dcio)) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+			"Invalid MCAP instance");
+		return 0;
+	}
+
+	if (!bt_io_get(mi->dcio, err, BT_IO_OPT_PSM, &lpsm, BT_IO_OPT_INVALID))
+		return 0;
+
+	return lpsm;
+}
+
+gboolean mcap_set_data_chan_mode(struct mcap_instance *mi, uint8_t mode,
+								GError **err)
+{
+	if (!(mi && mi->dcio)) {
+		g_set_error(err, MCAP_ERROR, MCAP_ERROR_INVALID_ARGS,
+						"Invalid MCAP instance");
+		return FALSE;
+	}
+
+	return bt_io_set(mi->dcio, err, BT_IO_OPT_MODE, mode,
+							BT_IO_OPT_INVALID);
+}
+
+struct mcap_mdl *mcap_mdl_ref(struct mcap_mdl *mdl)
+{
+	mdl->ref++;
+
+	DBG("mcap_mdl_ref(%p): ref=%d", mdl, mdl->ref);
+
+	return mdl;
+}
+
+void mcap_mdl_unref(struct mcap_mdl *mdl)
+{
+	mdl->ref--;
+
+	DBG("mcap_mdl_unref(%p): ref=%d", mdl, mdl->ref);
+
+	if (mdl->ref > 0)
+		return;
+
+	free_mdl(mdl);
+}
+
+
+static int send_sync_cmd(struct mcap_mcl *mcl, const void *buf, uint32_t size)
+{
+	int sock;
+
+	if (mcl->cc == NULL)
+		return -1;
+
+	sock = g_io_channel_unix_get_fd(mcl->cc);
+	return mcap_send_data(sock, buf, size);
+}
+
+static int send_unsupported_cap_req(struct mcap_mcl *mcl)
+{
+	mcap_md_sync_cap_rsp *cmd;
+	int sent;
+
+	cmd = g_new0(mcap_md_sync_cap_rsp, 1);
+	cmd->op = MCAP_MD_SYNC_CAP_RSP;
+	cmd->rc = MCAP_REQUEST_NOT_SUPPORTED;
+
+	sent = send_sync_cmd(mcl, cmd, sizeof(*cmd));
+	g_free(cmd);
+
+	return sent;
+}
+
+static int send_unsupported_set_req(struct mcap_mcl *mcl)
+{
+	mcap_md_sync_set_rsp *cmd;
+	int sent;
+
+	cmd = g_new0(mcap_md_sync_set_rsp, 1);
+	cmd->op = MCAP_MD_SYNC_SET_RSP;
+	cmd->rc = MCAP_REQUEST_NOT_SUPPORTED;
+
+	sent = send_sync_cmd(mcl, cmd, sizeof(*cmd));
+	g_free(cmd);
+
+	return sent;
+}
+
+static void reset_tmstamp(struct mcap_csp *csp, struct timespec *base_time,
+				uint64_t new_tmstamp)
+{
+	csp->base_tmstamp = new_tmstamp;
+	if (base_time)
+		csp->base_time = *base_time;
+	else
+		clock_gettime(CLK, &csp->base_time);
+}
+
+void mcap_sync_init(struct mcap_mcl *mcl)
+{
+	if (!mcl->mi->csp_enabled) {
+		mcl->csp = NULL;
+		return;
+	}
+
+	mcl->csp = g_new0(struct mcap_csp, 1);
+
+	mcl->csp->rem_req_acc = 10000; /* safe divisor */
+	mcl->csp->set_data = NULL;
+	mcl->csp->csp_priv_data = NULL;
+
+	reset_tmstamp(mcl->csp, NULL, 0);
+}
+
+void mcap_sync_stop(struct mcap_mcl *mcl)
+{
+	if (!mcl->csp)
+		return;
+
+	if (mcl->csp->ind_timer)
+		g_source_remove(mcl->csp->ind_timer);
+
+	if (mcl->csp->set_timer)
+		g_source_remove(mcl->csp->set_timer);
+
+	if (mcl->csp->set_data)
+		g_free(mcl->csp->set_data);
+
+	if (mcl->csp->csp_priv_data)
+		g_free(mcl->csp->csp_priv_data);
+
+	mcl->csp->ind_timer = 0;
+	mcl->csp->set_timer = 0;
+	mcl->csp->set_data = NULL;
+	mcl->csp->csp_priv_data = NULL;
+
+	g_free(mcl->csp);
+	mcl->csp = NULL;
+}
+
+static uint64_t time_us(struct timespec *tv)
+{
+	return tv->tv_sec * 1000000 + tv->tv_nsec / 1000;
+}
+
+static int64_t bt2us(int bt)
+{
+	return bt * 312.5;
+}
+
+static int bt2ms(int bt)
+{
+	return bt * 312.5 / 1000;
+}
+
+static int btoffset(uint32_t btclk1, uint32_t btclk2)
+{
+	int offset = btclk2 - btclk1;
+
+	if (offset <= -MCAP_BTCLOCK_HALF)
+		offset += MCAP_BTCLOCK_FIELD;
+	else if (offset > MCAP_BTCLOCK_HALF)
+		offset -= MCAP_BTCLOCK_FIELD;
+
+	return offset;
+}
+
+static int btdiff(uint32_t btclk1, uint32_t btclk2)
+{
+	return btoffset(btclk1, btclk2);
+}
+
+static gboolean valid_btclock(uint32_t btclk)
+{
+	return btclk <= MCAP_BTCLOCK_MAX;
+}
+
+/* This call may fail; either deal with retry or use read_btclock_retry */
+static gboolean read_btclock(struct mcap_mcl *mcl, uint32_t *btclock,
+							uint16_t *btaccuracy)
+{
+	/* FIXME: btd_adapter_read_clock(...) always return FALSE, current
+	code doesn't support CSP (Clock Synchronization Protocol). To avoid
+	build dependancy on struct 'btd_adapter', removing this code. */
+
+	return FALSE;
+}
+
+static gboolean read_btclock_retry(struct mcap_mcl *mcl, uint32_t *btclock,
+							uint16_t *btaccuracy)
+{
+	int retries = 5;
+
+	while (--retries >= 0) {
+		if (read_btclock(mcl, btclock, btaccuracy))
+			return TRUE;
+		DBG("CSP: retrying to read bt clock...");
+	}
+
+	return FALSE;
+}
+
+static gboolean get_btrole(struct mcap_mcl *mcl)
+{
+	int sock, flags;
+	socklen_t len;
+
+	if (mcl->cc == NULL)
+		return -1;
+
+	sock = g_io_channel_unix_get_fd(mcl->cc);
+	len = sizeof(flags);
+
+	if (getsockopt(sock, SOL_L2CAP, L2CAP_LM, &flags, &len))
+		DBG("CSP: could not read role");
+
+	return flags & L2CAP_LM_MASTER;
+}
+
+uint64_t mcap_get_timestamp(struct mcap_mcl *mcl,
+				struct timespec *given_time)
+{
+	struct timespec now;
+	uint64_t tmstamp;
+
+	if (!mcl->csp)
+		return MCAP_TMSTAMP_DONTSET;
+
+	if (given_time)
+		now = *given_time;
+	else
+		clock_gettime(CLK, &now);
+
+	tmstamp = time_us(&now) - time_us(&mcl->csp->base_time)
+		+ mcl->csp->base_tmstamp;
+
+	return tmstamp;
+}
+
+uint32_t mcap_get_btclock(struct mcap_mcl *mcl)
+{
+	uint32_t btclock;
+	uint16_t accuracy;
+
+	if (!mcl->csp)
+		return MCAP_BTCLOCK_IMMEDIATE;
+
+	if (!read_btclock_retry(mcl, &btclock, &accuracy))
+		btclock = 0xffffffff;
+
+	return btclock;
+}
+
+static gboolean initialize_caps(struct mcap_mcl *mcl)
+{
+	struct timespec t1, t2;
+	int latencies[SAMPLE_COUNT];
+	int latency, avg, dev;
+	uint32_t btclock;
+	uint16_t btaccuracy;
+	int i;
+	int retries;
+
+	clock_getres(CLK, &t1);
+
+	_caps.ts_res = time_us(&t1);
+	if (_caps.ts_res < 1)
+		_caps.ts_res = 1;
+
+	_caps.ts_acc = 20; /* ppm, estimated */
+
+	/* A little exercise before measuing latency */
+	clock_gettime(CLK, &t1);
+	read_btclock_retry(mcl, &btclock, &btaccuracy);
+
+	/* Read clock a number of times and measure latency */
+	avg = 0;
+	i = 0;
+	retries = MAX_RETRIES;
+	while (i < SAMPLE_COUNT && retries > 0) {
+		clock_gettime(CLK, &t1);
+		if (!read_btclock(mcl, &btclock, &btaccuracy)) {
+			retries--;
+			continue;
+		}
+		clock_gettime(CLK, &t2);
+
+		latency = time_us(&t2) - time_us(&t1);
+		latencies[i] = latency;
+		avg += latency;
+		i++;
+	}
+
+	if (retries <= 0)
+		return FALSE;
+
+	/* Calculate average and deviation */
+	avg /= SAMPLE_COUNT;
+	dev = 0;
+	for (i = 0; i < SAMPLE_COUNT; ++i)
+		dev += abs(latencies[i] - avg);
+	dev /= SAMPLE_COUNT;
+
+	/* Calculate corrected average, without 'freak' latencies */
+	latency = 0;
+	for (i = 0; i < SAMPLE_COUNT; ++i) {
+		if (latencies[i] > (avg + dev * 6))
+			latency += avg;
+		else
+			latency += latencies[i];
+	}
+	latency /= SAMPLE_COUNT;
+
+	_caps.latency = latency;
+	_caps.preempt_thresh = latency * 4;
+	_caps.syncleadtime_ms = latency * 50 / 1000;
+
+	csp_caps_initialized = TRUE;
+	return TRUE;
+}
+
+static struct csp_caps *caps(struct mcap_mcl *mcl)
+{
+	if (!csp_caps_initialized)
+		if (!initialize_caps(mcl)) {
+			/* Temporary failure in reading BT clock */
+			return NULL;
+		}
+
+	return &_caps;
+}
+
+static int send_sync_cap_rsp(struct mcap_mcl *mcl, uint8_t rspcode,
+			uint8_t btclockres, uint16_t synclead,
+			uint16_t tmstampres, uint16_t tmstampacc)
+{
+	mcap_md_sync_cap_rsp *rsp;
+	int sent;
+
+	rsp = g_new0(mcap_md_sync_cap_rsp, 1);
+
+	rsp->op = MCAP_MD_SYNC_CAP_RSP;
+	rsp->rc = rspcode;
+
+	rsp->btclock = btclockres;
+	rsp->sltime = htons(synclead);
+	rsp->timestnr = htons(tmstampres);
+	rsp->timestna = htons(tmstampacc);
+
+	sent = send_sync_cmd(mcl, rsp, sizeof(*rsp));
+	g_free(rsp);
+
+	return sent;
+}
+
+static void proc_sync_cap_req(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	mcap_md_sync_cap_req *req;
+	uint16_t required_accuracy;
+	uint16_t our_accuracy;
+	uint32_t btclock;
+	uint16_t btres;
+
+	if (len != sizeof(mcap_md_sync_cap_req)) {
+		send_sync_cap_rsp(mcl, MCAP_INVALID_PARAM_VALUE,
+					0, 0, 0, 0);
+		return;
+	}
+
+	if (!caps(mcl)) {
+		send_sync_cap_rsp(mcl, MCAP_RESOURCE_UNAVAILABLE,
+					0, 0, 0, 0);
+		return;
+	}
+
+	req = (mcap_md_sync_cap_req *) cmd;
+	required_accuracy = ntohs(req->timest);
+	our_accuracy = caps(mcl)->ts_acc;
+	btres = 0;
+
+	if (required_accuracy < our_accuracy || required_accuracy < 1) {
+		send_sync_cap_rsp(mcl, MCAP_RESOURCE_UNAVAILABLE,
+					0, 0, 0, 0);
+		return;
+	}
+
+	if (!read_btclock_retry(mcl, &btclock, &btres)) {
+		send_sync_cap_rsp(mcl, MCAP_RESOURCE_UNAVAILABLE,
+					0, 0, 0, 0);
+		return;
+	}
+
+	mcl->csp->remote_caps = 1;
+	mcl->csp->rem_req_acc = required_accuracy;
+
+	send_sync_cap_rsp(mcl, MCAP_SUCCESS, btres,
+				caps(mcl)->syncleadtime_ms,
+				caps(mcl)->ts_res, our_accuracy);
+}
+
+static int send_sync_set_rsp(struct mcap_mcl *mcl, uint8_t rspcode,
+			uint32_t btclock, uint64_t timestamp,
+			uint16_t tmstampres)
+{
+	mcap_md_sync_set_rsp *rsp;
+	int sent;
+
+	rsp = g_new0(mcap_md_sync_set_rsp, 1);
+
+	rsp->op = MCAP_MD_SYNC_SET_RSP;
+	rsp->rc = rspcode;
+	rsp->btclock = htonl(btclock);
+	rsp->timestst = hton64(timestamp);
+	rsp->timestsa = htons(tmstampres);
+
+	sent = send_sync_cmd(mcl, rsp, sizeof(*rsp));
+	g_free(rsp);
+
+	return sent;
+}
+
+static gboolean get_all_clocks(struct mcap_mcl *mcl, uint32_t *btclock,
+				struct timespec *base_time,
+				uint64_t *timestamp)
+{
+	int latency;
+	int retry = 5;
+	uint16_t btres;
+	struct timespec t0;
+
+	if (!caps(mcl))
+		return FALSE;
+
+	latency = caps(mcl)->preempt_thresh + 1;
+
+	while (latency > caps(mcl)->preempt_thresh && --retry >= 0) {
+
+		clock_gettime(CLK, &t0);
+
+		if (!read_btclock(mcl, btclock, &btres))
+			continue;
+
+		clock_gettime(CLK, base_time);
+
+		/* Tries to detect preemption between clock_gettime
+		 * and read_btclock by measuring transaction time
+		 */
+		latency = time_us(base_time) - time_us(&t0);
+	}
+
+	*timestamp = mcap_get_timestamp(mcl, base_time);
+
+	return TRUE;
+}
+
+static gboolean sync_send_indication(gpointer user_data)
+{
+	struct mcap_mcl *mcl;
+	mcap_md_sync_info_ind *cmd;
+	uint32_t btclock;
+	uint64_t tmstamp;
+	struct timespec base_time;
+	int sent;
+
+	if (!user_data)
+		return FALSE;
+
+	btclock = 0;
+	mcl = user_data;
+
+	if (!caps(mcl))
+		return FALSE;
+
+	if (!get_all_clocks(mcl, &btclock, &base_time, &tmstamp))
+		return FALSE;
+
+	cmd = g_new0(mcap_md_sync_info_ind, 1);
+
+	cmd->op = MCAP_MD_SYNC_INFO_IND;
+	cmd->btclock = htonl(btclock);
+	cmd->timestst = hton64(tmstamp);
+	cmd->timestsa = htons(caps(mcl)->latency);
+
+	sent = send_sync_cmd(mcl, cmd, sizeof(*cmd));
+	g_free(cmd);
+
+	return !sent;
+}
+
+static gboolean proc_sync_set_req_phase2(gpointer user_data)
+{
+	struct mcap_mcl *mcl;
+	struct sync_set_data *data;
+	uint8_t update;
+	uint32_t sched_btclock;
+	uint64_t new_tmstamp;
+	int ind_freq;
+	int role;
+	uint32_t btclock;
+	uint64_t tmstamp;
+	struct timespec base_time;
+	uint16_t tmstampacc;
+	gboolean reset;
+	int delay;
+
+	if (!user_data)
+		return FALSE;
+
+	mcl = user_data;
+
+	if (!mcl->csp->set_data)
+		return FALSE;
+
+	btclock = 0;
+	data = mcl->csp->set_data;
+	update = data->update;
+	sched_btclock = data->sched_btclock;
+	new_tmstamp = data->timestamp;
+	ind_freq = data->ind_freq;
+	role = data->role;
+
+	if (!caps(mcl)) {
+		send_sync_set_rsp(mcl, MCAP_UNSPECIFIED_ERROR, 0, 0, 0);
+		return FALSE;
+	}
+
+	if (!get_all_clocks(mcl, &btclock, &base_time, &tmstamp)) {
+		send_sync_set_rsp(mcl, MCAP_UNSPECIFIED_ERROR, 0, 0, 0);
+		return FALSE;
+	}
+
+	if (get_btrole(mcl) != role) {
+		send_sync_set_rsp(mcl, MCAP_INVALID_OPERATION, 0, 0, 0);
+		return FALSE;
+	}
+
+	reset = (new_tmstamp != MCAP_TMSTAMP_DONTSET);
+
+	if (reset) {
+		if (sched_btclock != MCAP_BTCLOCK_IMMEDIATE) {
+			delay = bt2us(btdiff(sched_btclock, btclock));
+			if (delay >= 0 || ((new_tmstamp - delay) > 0)) {
+				new_tmstamp += delay;
+				DBG("CSP: reset w/ delay %dus, compensated",
+									delay);
+			} else
+				DBG("CSP: reset w/ delay %dus, uncompensated",
+									delay);
+		}
+
+		reset_tmstamp(mcl->csp, &base_time, new_tmstamp);
+		tmstamp = new_tmstamp;
+	}
+
+	tmstampacc = caps(mcl)->latency + caps(mcl)->ts_acc;
+
+	if (mcl->csp->ind_timer) {
+		g_source_remove(mcl->csp->ind_timer);
+		mcl->csp->ind_timer = 0;
+	}
+
+	if (update) {
+		int when = ind_freq + caps(mcl)->syncleadtime_ms;
+		mcl->csp->ind_timer = g_timeout_add(when,
+						sync_send_indication,
+						mcl);
+	}
+
+	send_sync_set_rsp(mcl, MCAP_SUCCESS, btclock, tmstamp, tmstampacc);
+
+	/* First indication after set is immediate */
+	if (update)
+		sync_send_indication(mcl);
+
+	return FALSE;
+}
+
+static void proc_sync_set_req(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	mcap_md_sync_set_req *req;
+	uint32_t sched_btclock, cur_btclock;
+	uint16_t btres;
+	uint8_t update;
+	uint64_t timestamp;
+	struct sync_set_data *set_data;
+	int phase2_delay, ind_freq, when;
+
+	if (len != sizeof(mcap_md_sync_set_req)) {
+		send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE, 0, 0, 0);
+		return;
+	}
+
+	req = (mcap_md_sync_set_req *) cmd;
+	sched_btclock = ntohl(req->btclock);
+	update = req->timestui;
+	timestamp = ntoh64(req->timestst);
+	cur_btclock = 0;
+
+	if (sched_btclock != MCAP_BTCLOCK_IMMEDIATE &&
+			!valid_btclock(sched_btclock)) {
+		send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE, 0, 0, 0);
+		return;
+	}
+
+	if (update > 1) {
+		send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE, 0, 0, 0);
+		return;
+	}
+
+	if (!mcl->csp->remote_caps) {
+		/* Remote side did not ask our capabilities yet */
+		send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE, 0, 0, 0);
+		return;
+	}
+
+	if (!caps(mcl)) {
+		send_sync_set_rsp(mcl, MCAP_UNSPECIFIED_ERROR, 0, 0, 0);
+		return;
+	}
+
+	if (!read_btclock_retry(mcl, &cur_btclock, &btres)) {
+		send_sync_set_rsp(mcl, MCAP_UNSPECIFIED_ERROR, 0, 0, 0);
+		return;
+	}
+
+	if (sched_btclock == MCAP_BTCLOCK_IMMEDIATE)
+		phase2_delay = 0;
+	else {
+		phase2_delay = btdiff(cur_btclock, sched_btclock);
+
+		if (phase2_delay < 0) {
+			/* can not reset in the past tense */
+			send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE,
+						0, 0, 0);
+			return;
+		}
+
+		/* Convert to miliseconds */
+		phase2_delay = bt2ms(phase2_delay);
+
+		if (phase2_delay > 61*1000) {
+			/* More than 60 seconds in the future */
+			send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE,
+						0, 0, 0);
+			return;
+		} else if (phase2_delay < caps(mcl)->latency / 1000) {
+			/* Too fast for us to do in time */
+			send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE,
+						0, 0, 0);
+			return;
+		}
+	}
+
+	if (update) {
+		/* Indication frequency: required accuracy divided by ours */
+		/* Converted to milisseconds */
+		ind_freq = (1000 * mcl->csp->rem_req_acc) / caps(mcl)->ts_acc;
+
+		if (ind_freq < MAX(caps(mcl)->latency * 2 / 1000, 100)) {
+			/* Too frequent, we can't handle */
+			send_sync_set_rsp(mcl, MCAP_INVALID_PARAM_VALUE,
+						0, 0, 0);
+			return;
+		}
+
+		DBG("CSP: indication every %dms", ind_freq);
+	} else
+		ind_freq = 0;
+
+	if (mcl->csp->ind_timer) {
+		/* Old indications are no longer sent */
+		g_source_remove(mcl->csp->ind_timer);
+		mcl->csp->ind_timer = 0;
+	}
+
+	if (!mcl->csp->set_data)
+		mcl->csp->set_data = g_new0(struct sync_set_data, 1);
+
+	set_data = (struct sync_set_data *) mcl->csp->set_data;
+
+	set_data->update = update;
+	set_data->sched_btclock = sched_btclock;
+	set_data->timestamp = timestamp;
+	set_data->ind_freq = ind_freq;
+	set_data->role = get_btrole(mcl);
+
+	/* TODO is there some way to schedule a call based directly on
+	 * a BT clock value, instead of this estimation that uses
+	 * the SO clock? */
+
+	if (phase2_delay > 0) {
+		when = phase2_delay + caps(mcl)->syncleadtime_ms;
+		mcl->csp->set_timer = g_timeout_add(when,
+						proc_sync_set_req_phase2,
+						mcl);
+	} else
+		proc_sync_set_req_phase2(mcl);
+
+	/* First indication is immediate */
+	if (update)
+		sync_send_indication(mcl);
+}
+
+static void proc_sync_cap_rsp(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	mcap_md_sync_cap_rsp *rsp;
+	uint8_t mcap_err;
+	uint8_t btclockres;
+	uint16_t synclead;
+	uint16_t tmstampres;
+	uint16_t tmstampacc;
+	struct mcap_sync_cap_cbdata *cbdata;
+	mcap_sync_cap_cb cb;
+	gpointer user_data;
+
+	if (mcl->csp->csp_req != MCAP_MD_SYNC_CAP_REQ) {
+		DBG("CSP: got unexpected cap respose");
+		return;
+	}
+
+	if (!mcl->csp->csp_priv_data) {
+		DBG("CSP: no priv data for cap respose");
+		return;
+	}
+
+	cbdata = mcl->csp->csp_priv_data;
+	cb = cbdata->cb;
+	user_data = cbdata->user_data;
+	g_free(cbdata);
+
+	mcl->csp->csp_priv_data = NULL;
+	mcl->csp->csp_req = 0;
+
+	if (len != sizeof(mcap_md_sync_cap_rsp)) {
+		DBG("CSP: got corrupted cap respose");
+		return;
+	}
+
+	rsp = (mcap_md_sync_cap_rsp *) cmd;
+	mcap_err = rsp->rc;
+	btclockres = rsp->btclock;
+	synclead = ntohs(rsp->sltime);
+	tmstampres = ntohs(rsp->timestnr);
+	tmstampacc = ntohs(rsp->timestna);
+
+	if (!mcap_err)
+		mcl->csp->local_caps = TRUE;
+
+	cb(mcl, mcap_err, btclockres, synclead, tmstampres, tmstampacc, NULL,
+								user_data);
+}
+
+static void proc_sync_set_rsp(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	mcap_md_sync_set_rsp *rsp;
+	uint8_t mcap_err;
+	uint32_t btclock;
+	uint64_t timestamp;
+	uint16_t accuracy;
+	struct mcap_sync_set_cbdata *cbdata;
+	mcap_sync_set_cb cb;
+	gpointer user_data;
+
+	if (mcl->csp->csp_req != MCAP_MD_SYNC_SET_REQ) {
+		DBG("CSP: got unexpected set respose");
+		return;
+	}
+
+	if (!mcl->csp->csp_priv_data) {
+		DBG("CSP: no priv data for set respose");
+		return;
+	}
+
+	cbdata = mcl->csp->csp_priv_data;
+	cb = cbdata->cb;
+	user_data = cbdata->user_data;
+	g_free(cbdata);
+
+	mcl->csp->csp_priv_data = NULL;
+	mcl->csp->csp_req = 0;
+
+	if (len != sizeof(mcap_md_sync_set_rsp)) {
+		DBG("CSP: got corrupted set respose");
+		return;
+	}
+
+	rsp = (mcap_md_sync_set_rsp *) cmd;
+	mcap_err = rsp->rc;
+	btclock = ntohl(rsp->btclock);
+	timestamp = ntoh64(rsp->timestst);
+	accuracy = ntohs(rsp->timestsa);
+
+	if (!mcap_err && !valid_btclock(btclock))
+		mcap_err = MCAP_ERROR_INVALID_ARGS;
+
+	cb(mcl, mcap_err, btclock, timestamp, accuracy, NULL, user_data);
+}
+
+static void proc_sync_info_ind(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	mcap_md_sync_info_ind *req;
+	struct sync_info_ind_data data;
+	uint32_t btclock;
+
+	if (!mcl->csp->ind_expected) {
+		DBG("CSP: received unexpected info indication");
+		return;
+	}
+
+	if (len != sizeof(mcap_md_sync_info_ind))
+		return;
+
+	req = (mcap_md_sync_info_ind *) cmd;
+
+	btclock = ntohl(req->btclock);
+
+	if (!valid_btclock(btclock))
+		return;
+
+	data.btclock = btclock;
+	data.timestamp = ntoh64(req->timestst);
+	data.accuracy = ntohs(req->timestsa);
+
+	if (mcl->mi->mcl_sync_infoind_cb)
+		mcl->mi->mcl_sync_infoind_cb(mcl, &data);
+}
+
+void proc_sync_cmd(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len)
+{
+	if (!mcl->mi->csp_enabled || !mcl->csp) {
+		switch (cmd[0]) {
+		case MCAP_MD_SYNC_CAP_REQ:
+			send_unsupported_cap_req(mcl);
+			break;
+		case MCAP_MD_SYNC_SET_REQ:
+			send_unsupported_set_req(mcl);
+			break;
+		}
+		return;
+	}
+
+	switch (cmd[0]) {
+	case MCAP_MD_SYNC_CAP_REQ:
+		proc_sync_cap_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_SYNC_CAP_RSP:
+		proc_sync_cap_rsp(mcl, cmd, len);
+		break;
+	case MCAP_MD_SYNC_SET_REQ:
+		proc_sync_set_req(mcl, cmd, len);
+		break;
+	case MCAP_MD_SYNC_SET_RSP:
+		proc_sync_set_rsp(mcl, cmd, len);
+		break;
+	case MCAP_MD_SYNC_INFO_IND:
+		proc_sync_info_ind(mcl, cmd, len);
+		break;
+	}
+}
+
+void mcap_sync_cap_req(struct mcap_mcl *mcl, uint16_t reqacc,
+			mcap_sync_cap_cb cb, gpointer user_data,
+			GError **err)
+{
+	struct mcap_sync_cap_cbdata *cbdata;
+	mcap_md_sync_cap_req *cmd;
+
+	if (!mcl->mi->csp_enabled || !mcl->csp) {
+		g_set_error(err,
+			MCAP_CSP_ERROR,
+			MCAP_ERROR_RESOURCE_UNAVAILABLE,
+			"CSP not enabled for the instance");
+		return;
+	}
+
+	if (mcl->csp->csp_req) {
+		g_set_error(err,
+			MCAP_CSP_ERROR,
+			MCAP_ERROR_RESOURCE_UNAVAILABLE,
+			"Pending CSP request");
+		return;
+	}
+
+	mcl->csp->csp_req = MCAP_MD_SYNC_CAP_REQ;
+	cmd = g_new0(mcap_md_sync_cap_req, 1);
+
+	cmd->op = MCAP_MD_SYNC_CAP_REQ;
+	cmd->timest = htons(reqacc);
+
+	cbdata = g_new0(struct mcap_sync_cap_cbdata, 1);
+	cbdata->cb = cb;
+	cbdata->user_data = user_data;
+	mcl->csp->csp_priv_data = cbdata;
+
+	send_sync_cmd(mcl, cmd, sizeof(*cmd));
+
+	g_free(cmd);
+}
+
+void mcap_sync_set_req(struct mcap_mcl *mcl, uint8_t update, uint32_t btclock,
+			uint64_t timestamp, mcap_sync_set_cb cb,
+			gpointer user_data, GError **err)
+{
+	mcap_md_sync_set_req *cmd;
+	struct mcap_sync_set_cbdata *cbdata;
+
+	if (!mcl->mi->csp_enabled || !mcl->csp) {
+		g_set_error(err,
+			MCAP_CSP_ERROR,
+			MCAP_ERROR_RESOURCE_UNAVAILABLE,
+			"CSP not enabled for the instance");
+		return;
+	}
+
+	if (!mcl->csp->local_caps) {
+		g_set_error(err,
+			MCAP_CSP_ERROR,
+			MCAP_ERROR_RESOURCE_UNAVAILABLE,
+			"Did not get CSP caps from slave yet");
+		return;
+	}
+
+	if (mcl->csp->csp_req) {
+		g_set_error(err,
+			MCAP_CSP_ERROR,
+			MCAP_ERROR_RESOURCE_UNAVAILABLE,
+			"Pending CSP request");
+		return;
+	}
+
+	mcl->csp->csp_req = MCAP_MD_SYNC_SET_REQ;
+	cmd = g_new0(mcap_md_sync_set_req, 1);
+
+	cmd->op = MCAP_MD_SYNC_SET_REQ;
+	cmd->timestui = update;
+	cmd->btclock = htonl(btclock);
+	cmd->timestst = hton64(timestamp);
+
+	mcl->csp->ind_expected = update;
+
+	cbdata = g_new0(struct mcap_sync_set_cbdata, 1);
+	cbdata->cb = cb;
+	cbdata->user_data = user_data;
+	mcl->csp->csp_priv_data = cbdata;
+
+	send_sync_cmd(mcl, cmd, sizeof(*cmd));
+
+	g_free(cmd);
+}
+
+void mcap_enable_csp(struct mcap_instance *mi)
+{
+	mi->csp_enabled = TRUE;
+}
+
+void mcap_disable_csp(struct mcap_instance *mi)
+{
+	mi->csp_enabled = FALSE;
+}
diff --git a/android/mcap-lib.h b/android/mcap-lib.h
new file mode 100644
index 0000000..0a486d1
--- /dev/null
+++ b/android/mcap-lib.h
@@ -0,0 +1,441 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2010 GSyC/LibreSoft, Universidad Rey Juan Carlos.
+ *  Copyright (C) 2010 Signove
+ *  Copyright (C) 2014 Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#define MCAP_VERSION	0x0100	/* current version 01.00 */
+
+/* bytes to get MCAP Supported Procedures */
+#define MCAP_SUP_PROC	0x06
+
+/* maximum transmission unit for channels */
+#define MCAP_CC_MTU	48
+#define MCAP_DC_MTU	65535
+
+/* MCAP Standard Op Codes */
+#define MCAP_ERROR_RSP			0x00
+#define MCAP_MD_CREATE_MDL_REQ		0x01
+#define MCAP_MD_CREATE_MDL_RSP		0x02
+#define MCAP_MD_RECONNECT_MDL_REQ	0x03
+#define MCAP_MD_RECONNECT_MDL_RSP	0x04
+#define MCAP_MD_ABORT_MDL_REQ		0x05
+#define MCAP_MD_ABORT_MDL_RSP		0x06
+#define MCAP_MD_DELETE_MDL_REQ		0x07
+#define MCAP_MD_DELETE_MDL_RSP		0x08
+
+/* MCAP Clock Sync Op Codes */
+#define MCAP_MD_SYNC_CAP_REQ		0x11
+#define MCAP_MD_SYNC_CAP_RSP		0x12
+#define MCAP_MD_SYNC_SET_REQ		0x13
+#define MCAP_MD_SYNC_SET_RSP		0x14
+#define MCAP_MD_SYNC_INFO_IND		0x15
+
+/* MCAP Response codes */
+#define MCAP_SUCCESS			0x00
+#define MCAP_INVALID_OP_CODE		0x01
+#define MCAP_INVALID_PARAM_VALUE	0x02
+#define MCAP_INVALID_MDEP		0x03
+#define MCAP_MDEP_BUSY			0x04
+#define MCAP_INVALID_MDL		0x05
+#define MCAP_MDL_BUSY			0x06
+#define MCAP_INVALID_OPERATION		0x07
+#define MCAP_RESOURCE_UNAVAILABLE	0x08
+#define MCAP_UNSPECIFIED_ERROR		0x09
+#define MCAP_REQUEST_NOT_SUPPORTED	0x0A
+#define MCAP_CONFIGURATION_REJECTED	0x0B
+
+/* MDL IDs */
+#define MCAP_MDLID_RESERVED		0x0000
+#define MCAP_MDLID_INITIAL		0x0001
+#define MCAP_MDLID_FINAL		0xFEFF
+#define MCAP_ALL_MDLIDS			0xFFFF
+
+/* MDEP IDs */
+#define MCAP_MDEPID_INITIAL		0x00
+#define MCAP_MDEPID_FINAL		0x7F
+
+/* CSP special values */
+#define MCAP_BTCLOCK_IMMEDIATE		0xffffffffUL
+#define MCAP_TMSTAMP_DONTSET		0xffffffffffffffffULL
+#define MCAP_BTCLOCK_MAX		0x0fffffff
+#define MCAP_BTCLOCK_FIELD		(MCAP_BTCLOCK_MAX + 1)
+
+#define	MCAP_CTRL_CACHED	0x01	/* MCL is cached */
+#define	MCAP_CTRL_STD_OP	0x02	/* Support for standard op codes */
+#define	MCAP_CTRL_SYNC_OP	0x04	/* Support for synchronization commands */
+#define	MCAP_CTRL_CONN		0x08	/* MCL is in connecting process */
+#define	MCAP_CTRL_FREE		0x10	/* MCL is marked as releasable */
+#define	MCAP_CTRL_NOCACHE	0x20	/* MCL is marked as not cacheable */
+
+/*
+ * MCAP Request Packet Format
+ */
+
+typedef struct {
+	uint8_t		op;
+	uint16_t	mdl;
+	uint8_t		mdep;
+	uint8_t		conf;
+} __attribute__ ((packed)) mcap_md_create_mdl_req;
+
+typedef struct {
+	uint8_t		op;
+	uint16_t	mdl;
+} __attribute__ ((packed)) mcap_md_req;
+
+/*
+ * MCAP Response Packet Format
+ */
+
+typedef struct {
+	uint8_t		op;
+	uint8_t		rc;
+	uint16_t	mdl;
+	uint8_t		data[0];
+} __attribute__ ((packed)) mcap_rsp;
+
+/*
+ * MCAP Clock Synchronization Protocol
+ */
+
+typedef struct {
+	uint8_t		op;
+	uint16_t	timest;
+} __attribute__ ((packed)) mcap_md_sync_cap_req;
+
+typedef struct {
+	uint8_t		op;
+	uint8_t		rc;
+} __attribute__ ((packed)) mcap_md_sync_rsp;
+
+typedef struct {
+        uint8_t         op;
+	uint8_t         rc;
+	uint8_t         btclock;
+        uint16_t        sltime;
+	uint16_t        timestnr;
+	uint16_t        timestna;
+} __attribute__ ((packed)) mcap_md_sync_cap_rsp;
+
+typedef struct {
+	uint8_t		op;
+	uint8_t		timestui;
+	uint32_t	btclock;
+	uint64_t	timestst;
+} __attribute__ ((packed)) mcap_md_sync_set_req;
+
+typedef struct {
+	int8_t		op;
+	uint8_t		rc;
+	uint32_t	btclock;
+	uint64_t	timestst;
+	uint16_t	timestsa;
+} __attribute__ ((packed)) mcap_md_sync_set_rsp;
+
+typedef struct {
+	uint8_t		op;
+	uint32_t	btclock;
+	uint64_t	timestst;
+	uint16_t	timestsa;
+} __attribute__ ((packed)) mcap_md_sync_info_ind;
+
+typedef enum {
+/* MCAP Error Response Codes */
+	MCAP_ERROR_INVALID_OP_CODE = 1,
+	MCAP_ERROR_INVALID_PARAM_VALUE,
+	MCAP_ERROR_INVALID_MDEP,
+	MCAP_ERROR_MDEP_BUSY,
+	MCAP_ERROR_INVALID_MDL,
+	MCAP_ERROR_MDL_BUSY,
+	MCAP_ERROR_INVALID_OPERATION,
+	MCAP_ERROR_RESOURCE_UNAVAILABLE,
+	MCAP_ERROR_UNSPECIFIED_ERROR,
+	MCAP_ERROR_REQUEST_NOT_SUPPORTED,
+	MCAP_ERROR_CONFIGURATION_REJECTED,
+/* MCAP Internal Errors */
+	MCAP_ERROR_INVALID_ARGS,
+	MCAP_ERROR_ALREADY_EXISTS,
+	MCAP_ERROR_REQ_IGNORED,
+	MCAP_ERROR_MCL_CLOSED,
+	MCAP_ERROR_FAILED
+} McapError;
+
+typedef enum {
+	MCAP_MDL_CB_INVALID,
+	MCAP_MDL_CB_CONNECTED,		/* mcap_mdl_event_cb */
+	MCAP_MDL_CB_CLOSED,		/* mcap_mdl_event_cb */
+	MCAP_MDL_CB_DELETED,		/* mcap_mdl_event_cb */
+	MCAP_MDL_CB_ABORTED,		/* mcap_mdl_event_cb */
+	MCAP_MDL_CB_REMOTE_CONN_REQ,	/* mcap_remote_mdl_conn_req_cb */
+	MCAP_MDL_CB_REMOTE_RECONN_REQ	/* mcap_remote_mdl_reconn_req_cb */
+} McapMclCb;
+
+typedef enum {
+	MCL_CONNECTED,
+	MCL_PENDING,
+	MCL_ACTIVE,
+	MCL_IDLE
+} MCLState;
+
+typedef enum {
+	MCL_ACCEPTOR,
+	MCL_INITIATOR
+} MCLRole;
+
+typedef enum {
+	MCL_AVAILABLE,
+	MCL_WAITING_RSP
+} MCAPCtrl;
+
+typedef enum {
+	MDL_WAITING,
+	MDL_CONNECTED,
+	MDL_DELETING,
+	MDL_CLOSED
+} MDLState;
+
+struct mcap_csp;
+struct mcap_mdl_op_cb;
+struct mcap_instance;
+struct mcap_mcl;
+struct mcap_mdl;
+struct sync_info_ind_data;
+
+/************ Callbacks ************/
+
+/* MDL callbacks */
+
+typedef void (* mcap_mdl_event_cb) (struct mcap_mdl *mdl, gpointer data);
+typedef void (* mcap_mdl_operation_conf_cb) (struct mcap_mdl *mdl, uint8_t conf,
+						GError *err, gpointer data);
+typedef void (* mcap_mdl_operation_cb) (struct mcap_mdl *mdl, GError *err,
+						gpointer data);
+typedef void (* mcap_mdl_notify_cb) (GError *err, gpointer data);
+
+/* Next function should return an MCAP appropriate response code */
+typedef uint8_t (* mcap_remote_mdl_conn_req_cb) (struct mcap_mcl *mcl,
+						uint8_t mdepid, uint16_t mdlid,
+						uint8_t *conf, gpointer data);
+typedef uint8_t (* mcap_remote_mdl_reconn_req_cb) (struct mcap_mdl *mdl,
+						gpointer data);
+
+/* MCL callbacks */
+
+typedef void (* mcap_mcl_event_cb) (struct mcap_mcl *mcl, gpointer data);
+typedef void (* mcap_mcl_connect_cb) (struct mcap_mcl *mcl, GError *err,
+								gpointer data);
+
+/* CSP callbacks */
+
+typedef void (* mcap_info_ind_event_cb) (struct mcap_mcl *mcl,
+					struct sync_info_ind_data *data);
+
+typedef void (* mcap_sync_cap_cb) (struct mcap_mcl *mcl,
+					uint8_t mcap_err,
+					uint8_t btclockres,
+					uint16_t synclead,
+					uint16_t tmstampres,
+					uint16_t tmstampacc,
+					GError *err,
+					gpointer data);
+
+typedef void (* mcap_sync_set_cb) (struct mcap_mcl *mcl,
+					uint8_t mcap_err,
+					uint32_t btclock,
+					uint64_t timestamp,
+					uint16_t accuracy,
+					GError *err,
+					gpointer data);
+
+struct mcap_mdl_cb {
+	mcap_mdl_event_cb		mdl_connected;	/* Remote device has created a MDL */
+	mcap_mdl_event_cb		mdl_closed;	/* Remote device has closed a MDL */
+	mcap_mdl_event_cb		mdl_deleted;	/* Remote device requested deleting a MDL */
+	mcap_mdl_event_cb		mdl_aborted;	/* Remote device aborted the mdl creation */
+	mcap_remote_mdl_conn_req_cb	mdl_conn_req;	/* Remote device requested creating a MDL */
+	mcap_remote_mdl_reconn_req_cb	mdl_reconn_req;	/* Remote device requested reconnecting a MDL */
+	gpointer			user_data;	/* User data */
+};
+
+struct mcap_instance {
+	bdaddr_t		src;			/* Source address */
+	GIOChannel		*ccio;			/* Control Channel IO */
+	GIOChannel		*dcio;			/* Data Channel IO */
+	GSList			*mcls;			/* MCAP instance list */
+	GSList			*cached;		/* List with all cached MCLs (MAX_CACHED macro) */
+	BtIOSecLevel		sec;			/* Security level */
+	mcap_mcl_event_cb	mcl_connected_cb;	/* New MCL connected */
+	mcap_mcl_event_cb	mcl_reconnected_cb;	/* Old MCL has been reconnected */
+	mcap_mcl_event_cb	mcl_disconnected_cb;	/* MCL disconnected */
+	mcap_mcl_event_cb	mcl_uncached_cb;	/* MCL has been removed from MCAP cache */
+	mcap_info_ind_event_cb	mcl_sync_infoind_cb;	/* (CSP Master) Received info indication */
+	gpointer		user_data;		/* Data to be provided in callbacks */
+	int			ref;			/* Reference counter */
+
+	gboolean		csp_enabled;		/* CSP: functionality enabled */
+};
+
+struct mcap_mcl {
+	struct mcap_instance	*mi;		/* MCAP instance where this MCL belongs */
+	bdaddr_t		addr;		/* Device address */
+	GIOChannel		*cc;		/* MCAP Control Channel IO */
+	guint			wid;		/* MCL Watcher id */
+	GSList			*mdls;		/* List of Data Channels shorted by mdlid */
+	MCLState		state;		/* Current MCL State */
+	MCLRole			role;		/* Initiator or acceptor of this MCL */
+	MCAPCtrl		req;		/* Request control flag */
+	struct mcap_mdl_op_cb	*priv_data;	/* Temporal data to manage responses */
+	struct mcap_mdl_cb	*cb;		/* MDL callbacks */
+	guint			tid;		/* Timer id for waiting for a response */
+	uint8_t			*lcmd;		/* Last command sent */
+	int			ref;		/* References counter */
+	uint8_t			ctrl;		/* MCL control flag */
+	uint16_t		next_mdl;	/* id used to create next MDL */
+	struct mcap_csp		*csp;		/* CSP control structure */
+};
+
+struct mcap_mdl {
+	struct mcap_mcl		*mcl;		/* MCL where this MDL belongs */
+	GIOChannel		*dc;		/* MCAP Data Channel IO */
+	guint			wid;		/* MDL Watcher id */
+	uint16_t		mdlid;		/* MDL id */
+	uint8_t			mdep_id;	/* MCAP Data End Point */
+	MDLState		state;		/* MDL state */
+	int			ref;		/* References counter */
+};
+
+struct sync_info_ind_data {
+	uint32_t	btclock;
+	uint64_t	timestamp;
+	uint16_t	accuracy;
+};
+
+/************ Operations ************/
+
+/* MDL operations */
+
+gboolean mcap_create_mdl(struct mcap_mcl *mcl,
+				uint8_t mdepid,
+				uint8_t conf,
+				mcap_mdl_operation_conf_cb connect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+gboolean mcap_reconnect_mdl(struct mcap_mdl *mdl,
+				mcap_mdl_operation_cb reconnect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+gboolean mcap_delete_all_mdls(struct mcap_mcl *mcl,
+				mcap_mdl_notify_cb delete_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+gboolean mcap_delete_mdl(struct mcap_mdl *mdl,
+				mcap_mdl_notify_cb delete_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+gboolean mcap_connect_mdl(struct mcap_mdl *mdl,
+				uint8_t mode,
+				uint16_t dcpsm,
+				mcap_mdl_operation_cb connect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+gboolean mcap_mdl_abort(struct mcap_mdl *mdl,
+				mcap_mdl_notify_cb abort_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+
+int mcap_mdl_get_fd(struct mcap_mdl *mdl);
+uint16_t mcap_mdl_get_mdlid(struct mcap_mdl *mdl);
+struct mcap_mdl *mcap_mdl_ref(struct mcap_mdl *mdl);
+void mcap_mdl_unref(struct mcap_mdl *mdl);
+
+/* MCL operations */
+
+gboolean mcap_create_mcl(struct mcap_instance *mi,
+				const bdaddr_t *addr,
+				uint16_t ccpsm,
+				mcap_mcl_connect_cb connect_cb,
+				gpointer user_data,
+				GDestroyNotify destroy,
+				GError **err);
+void mcap_close_mcl(struct mcap_mcl *mcl, gboolean cache);
+gboolean mcap_mcl_set_cb(struct mcap_mcl *mcl, gpointer user_data,
+					GError **gerr, McapMclCb cb1, ...);
+void mcap_mcl_get_addr(struct mcap_mcl *mcl, bdaddr_t *addr);
+struct mcap_mcl *mcap_mcl_ref(struct mcap_mcl *mcl);
+void mcap_mcl_unref(struct mcap_mcl *mcl);
+
+/* CSP operations */
+
+void mcap_enable_csp(struct mcap_instance *mi);
+void mcap_disable_csp(struct mcap_instance *mi);
+uint64_t mcap_get_timestamp(struct mcap_mcl *mcl,
+				struct timespec *given_time);
+uint32_t mcap_get_btclock(struct mcap_mcl *mcl);
+
+void mcap_sync_cap_req(struct mcap_mcl *mcl,
+			uint16_t reqacc,
+			mcap_sync_cap_cb cb,
+			gpointer user_data,
+			GError **err);
+
+void mcap_sync_set_req(struct mcap_mcl *mcl,
+			uint8_t update,
+			uint32_t btclock,
+			uint64_t timestamp,
+			mcap_sync_set_cb cb,
+			gpointer user_data,
+			GError **err);
+
+/* MCAP main operations */
+
+struct mcap_instance *mcap_create_instance(const bdaddr_t *src,
+					BtIOSecLevel sec, uint16_t ccpsm,
+					uint16_t dcpsm,
+					mcap_mcl_event_cb mcl_connected,
+					mcap_mcl_event_cb mcl_reconnected,
+					mcap_mcl_event_cb mcl_disconnected,
+					mcap_mcl_event_cb mcl_uncached,
+					mcap_info_ind_event_cb mcl_sync_info_ind,
+					gpointer user_data,
+					GError **gerr);
+void mcap_release_instance(struct mcap_instance *mi);
+
+struct mcap_instance *mcap_instance_ref(struct mcap_instance *mi);
+void mcap_instance_unref(struct mcap_instance *mi);
+
+uint16_t mcap_get_ctrl_psm(struct mcap_instance *mi, GError **err);
+uint16_t mcap_get_data_psm(struct mcap_instance *mi, GError **err);
+
+gboolean mcap_set_data_chan_mode(struct mcap_instance *mi, uint8_t mode,
+								GError **err);
+
+int mcap_send_data(int sock, const void *buf, uint32_t size);
+
+void proc_sync_cmd(struct mcap_mcl *mcl, uint8_t *cmd, uint32_t len);
+void mcap_sync_init(struct mcap_mcl *mcl);
+void mcap_sync_stop(struct mcap_mcl *mcl);
-- 
1.8.3.2

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