Commit 52c0d6e5 authored by Andrei Emeltchenko's avatar Andrei Emeltchenko Committed by Gustavo Padovan
Browse files

Bluetooth: AMP: Remote AMP ctrl definitions 



Create remote AMP controllers structure. It is used to keep information
about discovered remote AMP controllers by A2MP protocol.

Signed-off-by: default avatarAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
parent 3161ae1c

include/net/bluetooth/a2mp.h

+3 −0
Original line number Diff line number Diff line
@@ -33,6 +33,9 @@ struct amp_mgr { 
	__u8			handle;

	enum amp_mgr_state	state;

	unsigned long		flags;



	struct list_head	amp_ctrls;

	struct mutex		amp_ctrls_lock;

};



struct a2mp_cmd {

include/net/bluetooth/amp.h

+15 −0
Original line number Diff line number Diff line
@@ -14,6 +14,21 @@ 
#ifndef __AMP_H

#define __AMP_H



struct amp_ctrl {

	struct list_head	list;

	struct kref		kref;

	__u8			id;

	__u16			assoc_len_so_far;

	__u16			assoc_rem_len;

	__u16			assoc_len;

	__u8			*assoc;

};



int amp_ctrl_put(struct amp_ctrl *ctrl);

struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr);

struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id);

void amp_ctrl_list_flush(struct amp_mgr *mgr);



struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,

			     u8 remote_id);

net/bluetooth/a2mp.c

+5 −0
Original line number Diff line number Diff line
@@ -594,6 +594,7 @@ static void amp_mgr_destroy(struct kref *kref) 
	list_del(&mgr->list);

	mutex_unlock(&amp_mgr_list_lock);



	amp_ctrl_list_flush(mgr);

	kfree(mgr);

}
@@ -630,6 +631,10 @@ static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn) 


	kref_init(&mgr->kref);



	/* Remote AMP ctrl list initialization */

	INIT_LIST_HEAD(&mgr->amp_ctrls);

	mutex_init(&mgr->amp_ctrls_lock);



	mutex_lock(&amp_mgr_list_lock);

	list_add(&mgr->list, &amp_mgr_list);

	mutex_unlock(&amp_mgr_list_lock);

net/bluetooth/amp.c

+79 −0
Original line number Diff line number Diff line
@@ -17,6 +17,85 @@ 
#include <net/bluetooth/a2mp.h>

#include <net/bluetooth/amp.h>



/* Remote AMP Controllers interface */

static void amp_ctrl_get(struct amp_ctrl *ctrl)

{

	BT_DBG("ctrl %p orig refcnt %d", ctrl,

	       atomic_read(&ctrl->kref.refcount));



	kref_get(&ctrl->kref);

}



static void amp_ctrl_destroy(struct kref *kref)

{

	struct amp_ctrl *ctrl = container_of(kref, struct amp_ctrl, kref);



	BT_DBG("ctrl %p", ctrl);



	kfree(ctrl->assoc);

	kfree(ctrl);

}



int amp_ctrl_put(struct amp_ctrl *ctrl)

{

	BT_DBG("ctrl %p orig refcnt %d", ctrl,

	       atomic_read(&ctrl->kref.refcount));



	return kref_put(&ctrl->kref, &amp_ctrl_destroy);

}



struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr)

{

	struct amp_ctrl *ctrl;



	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);

	if (!ctrl)

		return NULL;



	mutex_lock(&mgr->amp_ctrls_lock);

	list_add(&ctrl->list, &mgr->amp_ctrls);

	mutex_unlock(&mgr->amp_ctrls_lock);



	kref_init(&ctrl->kref);



	BT_DBG("mgr %p ctrl %p", mgr, ctrl);



	return ctrl;

}



void amp_ctrl_list_flush(struct amp_mgr *mgr)

{

	struct amp_ctrl *ctrl, *n;



	BT_DBG("mgr %p", mgr);



	mutex_lock(&mgr->amp_ctrls_lock);

	list_for_each_entry_safe(ctrl, n, &mgr->amp_ctrls, list) {

		list_del(&ctrl->list);

		amp_ctrl_put(ctrl);

	}

	mutex_unlock(&mgr->amp_ctrls_lock);

}



struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id)

{

	struct amp_ctrl *ctrl;



	BT_DBG("mgr %p id %d", mgr, id);



	mutex_lock(&mgr->amp_ctrls_lock);

	list_for_each_entry(ctrl, &mgr->amp_ctrls, list) {

		if (ctrl->id == id) {

			amp_ctrl_get(ctrl);

			mutex_unlock(&mgr->amp_ctrls_lock);

			return ctrl;

		}

	}

	mutex_unlock(&mgr->amp_ctrls_lock);



	return NULL;

}



/* Physical Link interface */

static u8 __next_handle(struct amp_mgr *mgr)

{