250 строки
8.2 KiB
C
250 строки
8.2 KiB
C
/*
|
|
* Copyright (c) 2005 Network Appliance, Inc. All rights reserved.
|
|
* Copyright (c) 2005 Open Grid Computing, Inc. 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.
|
|
*/
|
|
#ifndef IW_CM_H
|
|
#define IW_CM_H
|
|
|
|
#include <linux/in.h>
|
|
#include <rdma/ib_cm.h>
|
|
|
|
struct iw_cm_id;
|
|
|
|
enum iw_cm_event_type {
|
|
IW_CM_EVENT_CONNECT_REQUEST = 1, /* connect request received */
|
|
IW_CM_EVENT_CONNECT_REPLY, /* reply from active connect request */
|
|
IW_CM_EVENT_ESTABLISHED, /* passive side accept successful */
|
|
IW_CM_EVENT_DISCONNECT, /* orderly shutdown */
|
|
IW_CM_EVENT_CLOSE /* close complete */
|
|
};
|
|
|
|
struct iw_cm_event {
|
|
enum iw_cm_event_type event;
|
|
int status;
|
|
struct sockaddr_in local_addr;
|
|
struct sockaddr_in remote_addr;
|
|
void *private_data;
|
|
u8 private_data_len;
|
|
void *provider_data;
|
|
};
|
|
|
|
/**
|
|
* iw_cm_handler - Function to be called by the IW CM when delivering events
|
|
* to the client.
|
|
*
|
|
* @cm_id: The IW CM identifier associated with the event.
|
|
* @event: Pointer to the event structure.
|
|
*/
|
|
typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,
|
|
struct iw_cm_event *event);
|
|
|
|
/**
|
|
* iw_event_handler - Function called by the provider when delivering provider
|
|
* events to the IW CM. Returns either 0 indicating the event was processed
|
|
* or -errno if the event could not be processed.
|
|
*
|
|
* @cm_id: The IW CM identifier associated with the event.
|
|
* @event: Pointer to the event structure.
|
|
*/
|
|
typedef int (*iw_event_handler)(struct iw_cm_id *cm_id,
|
|
struct iw_cm_event *event);
|
|
|
|
struct iw_cm_id {
|
|
iw_cm_handler cm_handler; /* client callback function */
|
|
void *context; /* client cb context */
|
|
struct ib_device *device;
|
|
struct sockaddr_in local_addr;
|
|
struct sockaddr_in remote_addr;
|
|
void *provider_data; /* provider private data */
|
|
iw_event_handler event_handler; /* cb for provider
|
|
events */
|
|
/* Used by provider to add and remove refs on IW cm_id */
|
|
void (*add_ref)(struct iw_cm_id *);
|
|
void (*rem_ref)(struct iw_cm_id *);
|
|
};
|
|
|
|
struct iw_cm_conn_param {
|
|
const void *private_data;
|
|
u16 private_data_len;
|
|
u32 ord;
|
|
u32 ird;
|
|
u32 qpn;
|
|
};
|
|
|
|
struct iw_cm_verbs {
|
|
void (*add_ref)(struct ib_qp *qp);
|
|
|
|
void (*rem_ref)(struct ib_qp *qp);
|
|
|
|
struct ib_qp * (*get_qp)(struct ib_device *device,
|
|
int qpn);
|
|
|
|
int (*connect)(struct iw_cm_id *cm_id,
|
|
struct iw_cm_conn_param *conn_param);
|
|
|
|
int (*accept)(struct iw_cm_id *cm_id,
|
|
struct iw_cm_conn_param *conn_param);
|
|
|
|
int (*reject)(struct iw_cm_id *cm_id,
|
|
const void *pdata, u8 pdata_len);
|
|
|
|
int (*create_listen)(struct iw_cm_id *cm_id,
|
|
int backlog);
|
|
|
|
int (*destroy_listen)(struct iw_cm_id *cm_id);
|
|
};
|
|
|
|
/**
|
|
* iw_create_cm_id - Create an IW CM identifier.
|
|
*
|
|
* @device: The IB device on which to create the IW CM identier.
|
|
* @event_handler: User callback invoked to report events associated with the
|
|
* returned IW CM identifier.
|
|
* @context: User specified context associated with the id.
|
|
*/
|
|
struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
|
|
iw_cm_handler cm_handler, void *context);
|
|
|
|
/**
|
|
* iw_destroy_cm_id - Destroy an IW CM identifier.
|
|
*
|
|
* @cm_id: The previously created IW CM identifier to destroy.
|
|
*
|
|
* The client can assume that no events will be delivered for the CM ID after
|
|
* this function returns.
|
|
*/
|
|
void iw_destroy_cm_id(struct iw_cm_id *cm_id);
|
|
|
|
/**
|
|
* iw_cm_bind_qp - Unbind the specified IW CM identifier and QP
|
|
*
|
|
* @cm_id: The IW CM idenfier to unbind from the QP.
|
|
* @qp: The QP
|
|
*
|
|
* This is called by the provider when destroying the QP to ensure
|
|
* that any references held by the IWCM are released. It may also
|
|
* be called by the IWCM when destroying a CM_ID to that any
|
|
* references held by the provider are released.
|
|
*/
|
|
void iw_cm_unbind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
|
|
|
|
/**
|
|
* iw_cm_get_qp - Return the ib_qp associated with a QPN
|
|
*
|
|
* @ib_device: The IB device
|
|
* @qpn: The queue pair number
|
|
*/
|
|
struct ib_qp *iw_cm_get_qp(struct ib_device *device, int qpn);
|
|
|
|
/**
|
|
* iw_cm_listen - Listen for incoming connection requests on the
|
|
* specified IW CM id.
|
|
*
|
|
* @cm_id: The IW CM identifier.
|
|
* @backlog: The maximum number of outstanding un-accepted inbound listen
|
|
* requests to queue.
|
|
*
|
|
* The source address and port number are specified in the IW CM identifier
|
|
* structure.
|
|
*/
|
|
int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
|
|
|
|
/**
|
|
* iw_cm_accept - Called to accept an incoming connect request.
|
|
*
|
|
* @cm_id: The IW CM identifier associated with the connection request.
|
|
* @iw_param: Pointer to a structure containing connection establishment
|
|
* parameters.
|
|
*
|
|
* The specified cm_id will have been provided in the event data for a
|
|
* CONNECT_REQUEST event. Subsequent events related to this connection will be
|
|
* delivered to the specified IW CM identifier prior and may occur prior to
|
|
* the return of this function. If this function returns a non-zero value, the
|
|
* client can assume that no events will be delivered to the specified IW CM
|
|
* identifier.
|
|
*/
|
|
int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
|
|
|
|
/**
|
|
* iw_cm_reject - Reject an incoming connection request.
|
|
*
|
|
* @cm_id: Connection identifier associated with the request.
|
|
* @private_daa: Pointer to data to deliver to the remote peer as part of the
|
|
* reject message.
|
|
* @private_data_len: The number of bytes in the private_data parameter.
|
|
*
|
|
* The client can assume that no events will be delivered to the specified IW
|
|
* CM identifier following the return of this function. The private_data
|
|
* buffer is available for reuse when this function returns.
|
|
*/
|
|
int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,
|
|
u8 private_data_len);
|
|
|
|
/**
|
|
* iw_cm_connect - Called to request a connection to a remote peer.
|
|
*
|
|
* @cm_id: The IW CM identifier for the connection.
|
|
* @iw_param: Pointer to a structure containing connection establishment
|
|
* parameters.
|
|
*
|
|
* Events may be delivered to the specified IW CM identifier prior to the
|
|
* return of this function. If this function returns a non-zero value, the
|
|
* client can assume that no events will be delivered to the specified IW CM
|
|
* identifier.
|
|
*/
|
|
int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
|
|
|
|
/**
|
|
* iw_cm_disconnect - Close the specified connection.
|
|
*
|
|
* @cm_id: The IW CM identifier to close.
|
|
* @abrupt: If 0, the connection will be closed gracefully, otherwise, the
|
|
* connection will be reset.
|
|
*
|
|
* The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is
|
|
* delivered.
|
|
*/
|
|
int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
|
|
|
|
/**
|
|
* iw_cm_init_qp_attr - Called to initialize the attributes of the QP
|
|
* associated with a IW CM identifier.
|
|
*
|
|
* @cm_id: The IW CM identifier associated with the QP
|
|
* @qp_attr: Pointer to the QP attributes structure.
|
|
* @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are
|
|
* valid.
|
|
*/
|
|
int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,
|
|
int *qp_attr_mask);
|
|
|
|
#endif /* IW_CM_H */
|