RDMA: iWARP Connection Manager.
Add an iWARP Connection Manager (CM), which abstracts connection management for iWARP devices (RNICs). It is a logical instance of the xx_cm where xx is the transport type (ib or iw). The symbols exported are used by the transport independent rdma_cm module, and are available also for transport dependent ULPs. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Tom Tucker
Roland Dreier
parent
3cd965646b
commit
922a8e9fb2
1019
drivers/infiniband/core/iwcm.c
Normal file
1019
drivers/infiniband/core/iwcm.c
Normal file
File diff suppressed because it is too large
Load Diff
62
drivers/infiniband/core/iwcm.h
Normal file
62
drivers/infiniband/core/iwcm.h
Normal file
|
|
@ -0,0 +1,62 @@
|
|||
/*
|
||||
* 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 IWCM_H
|
||||
#define IWCM_H
|
||||
|
||||
enum iw_cm_state {
|
||||
IW_CM_STATE_IDLE, /* unbound, inactive */
|
||||
IW_CM_STATE_LISTEN, /* listen waiting for connect */
|
||||
IW_CM_STATE_CONN_RECV, /* inbound waiting for user accept */
|
||||
IW_CM_STATE_CONN_SENT, /* outbound waiting for peer accept */
|
||||
IW_CM_STATE_ESTABLISHED, /* established */
|
||||
IW_CM_STATE_CLOSING, /* disconnect */
|
||||
IW_CM_STATE_DESTROYING /* object being deleted */
|
||||
};
|
||||
|
||||
struct iwcm_id_private {
|
||||
struct iw_cm_id id;
|
||||
enum iw_cm_state state;
|
||||
unsigned long flags;
|
||||
struct ib_qp *qp;
|
||||
struct completion destroy_comp;
|
||||
wait_queue_head_t connect_wait;
|
||||
struct list_head work_list;
|
||||
spinlock_t lock;
|
||||
atomic_t refcount;
|
||||
struct list_head work_free_list;
|
||||
};
|
||||
|
||||
#define IWCM_F_CALLBACK_DESTROY 1
|
||||
#define IWCM_F_CONNECT_WAIT 2
|
||||
|
||||
#endif /* IWCM_H */
|
||||
258
include/rdma/iw_cm.h
Normal file
258
include/rdma/iw_cm.h
Normal file
|
|
@ -0,0 +1,258 @@
|
|||
/*
|
||||
* 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 */
|
||||
};
|
||||
|
||||
enum iw_cm_event_status {
|
||||
IW_CM_EVENT_STATUS_OK = 0, /* request successful */
|
||||
IW_CM_EVENT_STATUS_ACCEPTED = 0, /* connect request accepted */
|
||||
IW_CM_EVENT_STATUS_REJECTED, /* connect request rejected */
|
||||
IW_CM_EVENT_STATUS_TIMEOUT, /* the operation timed out */
|
||||
IW_CM_EVENT_STATUS_RESET, /* reset from remote peer */
|
||||
IW_CM_EVENT_STATUS_EINVAL, /* asynchronous failure for bad parm */
|
||||
};
|
||||
|
||||
struct iw_cm_event {
|
||||
enum iw_cm_event_type event;
|
||||
enum iw_cm_event_status 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 */
|
||||
Loading…
Reference in New Issue
Block a user