[PATCH] IB: Add kernel portion of user CM implementation

/*

 * Copyright (c) 2005 Topspin Communications.  All rights reserved.

 *

 * This software is available to you under a choice of one of two

 * licenses.  You may choose to be licensed under the terms of the GNU

 * General Public License (GPL) Version 2, available from the file

 * COPYING in the main directory of this source tree, or the

 * OpenIB.org BSD license below:

 *

 *     Redistribution and use in source and binary forms, with or

 *     without modification, are permitted provided that the following

 *     conditions are met:

 *

 *      - Redistributions of source code must retain the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer.

 *

 *      - Redistributions in binary form must reproduce the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer in the documentation and/or other materials

 *        provided with the distribution.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 *

 * $Id: ucm.h 2208 2005-04-22 23:24:31Z libor $

 */

#ifndef UCM_H

#define UCM_H

#include <linux/fs.h>

#include <linux/device.h>

#include <linux/cdev.h>

#include <linux/idr.h>

#include <ib_cm.h>

#include <ib_user_cm.h>

#define IB_UCM_CM_ID_INVALID 0xffffffff

struct ib_ucm_file {

	struct semaphore mutex;

	struct file *filp;

	/*

	 * list of pending events

	 */

	struct list_head  ctxs;   /* list of active connections */

	struct list_head  events; /* list of pending events */

	wait_queue_head_t poll_wait;

};

struct ib_ucm_context {

	int                 id;

	int                 ref;

	int                 error;

	struct ib_ucm_file *file;

	struct ib_cm_id    *cm_id;

	struct semaphore    mutex;

	struct list_head    events;    /* list of pending events. */

	struct list_head    file_list; /* member in file ctx list */

};

struct ib_ucm_event {

	struct ib_ucm_context *ctx;

	struct list_head file_list; /* member in file event list */

	struct list_head ctx_list;  /* member in ctx event list */

	struct ib_ucm_event_resp resp;

	void *data;

	void *info;

	int data_len;

	int info_len;

	/*

	 * new connection identifiers needs to be saved until

	 * userspace can get a handle on them.

	 */

	struct ib_cm_id *cm_id;

};

#endif /* UCM_H */