D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
lib
/
modules
/
5.4.0-216-generic
/
build
/
include
/
rdma
/
Filename :
iw_cm.h
back
Copy
/* * 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_storage local_addr; struct sockaddr_storage remote_addr; void *private_data; void *provider_data; u8 private_data_len; u8 ord; u8 ird; }; /** * 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_storage local_addr; /* local addr */ struct sockaddr_storage remote_addr; struct sockaddr_storage m_local_addr; /* nmapped local addr */ struct sockaddr_storage m_remote_addr; /* nmapped rem 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 *); u8 tos; bool tos_set:1; bool mapped:1; }; struct iw_cm_conn_param { const void *private_data; u16 private_data_len; u32 ord; u32 ird; u32 qpn; }; enum iw_flags { /* * This flag allows the iwcm and iwpmd to still advertise * mappings but the real and mapped port numbers are the * same. Further, iwpmd will not bind any user socket to * reserve the port. This is required for soft iwarp * to play in the port mapped iwarp space. */ IW_F_NO_PORT_MAP = (1 << 0), }; /** * 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); /** * iwcm_reject_msg - return a pointer to a reject message string. * @reason: Value returned in the REJECT event status field. */ const char *__attribute_const__ iwcm_reject_msg(int reason); #endif /* IW_CM_H */