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d0c49bf391
The IW_CM_EVENT_STATUS_xxx values were used in only a couple of places;
cma.c uses -Exxx values instead, and so do the amso1100, cxgb3 and cxgb4
drivers -- only nes was using the enum values (with the mild consequence
that all nes connection failures were treated as generic errors rather
than reported as timeouts or rejections).
We can fix this confusion by getting rid of enum iw_cm_event_status and
using a plain int for struct iw_cm_event.status, and converting nes to
use -Exxx as the other iWARP drivers do.
This also gets rid of the warning
drivers/infiniband/core/cma.c: In function 'cma_iw_handler':
drivers/infiniband/core/cma.c:1333:3: warning: case value '4294967185' not in enumerated type 'enum iw_cm_event_status'
drivers/infiniband/core/cma.c:1336:3: warning: case value '4294967186' not in enumerated type 'enum iw_cm_event_status'
drivers/infiniband/core/cma.c:1332:3: warning: case value '4294967192' not in enumerated type 'enum iw_cm_event_status'
Signed-off-by: Roland Dreier <roland@purestorage.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Faisal Latif <faisal.latif@intel.com>
250 lines
8.2 KiB
C
250 lines
8.2 KiB
C
/*
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* Copyright (c) 2005 Network Appliance, Inc. All rights reserved.
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* Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef IW_CM_H
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#define IW_CM_H
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#include <linux/in.h>
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#include <rdma/ib_cm.h>
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struct iw_cm_id;
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enum iw_cm_event_type {
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IW_CM_EVENT_CONNECT_REQUEST = 1, /* connect request received */
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IW_CM_EVENT_CONNECT_REPLY, /* reply from active connect request */
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IW_CM_EVENT_ESTABLISHED, /* passive side accept successful */
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IW_CM_EVENT_DISCONNECT, /* orderly shutdown */
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IW_CM_EVENT_CLOSE /* close complete */
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};
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struct iw_cm_event {
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enum iw_cm_event_type event;
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int status;
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struct sockaddr_in local_addr;
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struct sockaddr_in remote_addr;
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void *private_data;
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u8 private_data_len;
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void *provider_data;
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};
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/**
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* iw_cm_handler - Function to be called by the IW CM when delivering events
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* to the client.
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*
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* @cm_id: The IW CM identifier associated with the event.
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* @event: Pointer to the event structure.
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*/
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typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,
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struct iw_cm_event *event);
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/**
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* iw_event_handler - Function called by the provider when delivering provider
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* events to the IW CM. Returns either 0 indicating the event was processed
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* or -errno if the event could not be processed.
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*
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* @cm_id: The IW CM identifier associated with the event.
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* @event: Pointer to the event structure.
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*/
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typedef int (*iw_event_handler)(struct iw_cm_id *cm_id,
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struct iw_cm_event *event);
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struct iw_cm_id {
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iw_cm_handler cm_handler; /* client callback function */
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void *context; /* client cb context */
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struct ib_device *device;
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struct sockaddr_in local_addr;
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struct sockaddr_in remote_addr;
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void *provider_data; /* provider private data */
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iw_event_handler event_handler; /* cb for provider
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events */
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/* Used by provider to add and remove refs on IW cm_id */
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void (*add_ref)(struct iw_cm_id *);
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void (*rem_ref)(struct iw_cm_id *);
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};
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struct iw_cm_conn_param {
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const void *private_data;
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u16 private_data_len;
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u32 ord;
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u32 ird;
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u32 qpn;
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};
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struct iw_cm_verbs {
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void (*add_ref)(struct ib_qp *qp);
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void (*rem_ref)(struct ib_qp *qp);
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struct ib_qp * (*get_qp)(struct ib_device *device,
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int qpn);
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int (*connect)(struct iw_cm_id *cm_id,
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struct iw_cm_conn_param *conn_param);
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int (*accept)(struct iw_cm_id *cm_id,
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struct iw_cm_conn_param *conn_param);
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int (*reject)(struct iw_cm_id *cm_id,
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const void *pdata, u8 pdata_len);
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int (*create_listen)(struct iw_cm_id *cm_id,
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int backlog);
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int (*destroy_listen)(struct iw_cm_id *cm_id);
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};
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/**
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* iw_create_cm_id - Create an IW CM identifier.
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*
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* @device: The IB device on which to create the IW CM identier.
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* @event_handler: User callback invoked to report events associated with the
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* returned IW CM identifier.
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* @context: User specified context associated with the id.
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*/
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struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
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iw_cm_handler cm_handler, void *context);
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/**
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* iw_destroy_cm_id - Destroy an IW CM identifier.
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*
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* @cm_id: The previously created IW CM identifier to destroy.
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*
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* The client can assume that no events will be delivered for the CM ID after
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* this function returns.
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*/
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void iw_destroy_cm_id(struct iw_cm_id *cm_id);
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/**
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* iw_cm_bind_qp - Unbind the specified IW CM identifier and QP
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*
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* @cm_id: The IW CM idenfier to unbind from the QP.
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* @qp: The QP
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*
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* This is called by the provider when destroying the QP to ensure
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* that any references held by the IWCM are released. It may also
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* be called by the IWCM when destroying a CM_ID to that any
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* references held by the provider are released.
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*/
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void iw_cm_unbind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
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/**
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* iw_cm_get_qp - Return the ib_qp associated with a QPN
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*
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* @ib_device: The IB device
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* @qpn: The queue pair number
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*/
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struct ib_qp *iw_cm_get_qp(struct ib_device *device, int qpn);
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/**
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* iw_cm_listen - Listen for incoming connection requests on the
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* specified IW CM id.
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*
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* @cm_id: The IW CM identifier.
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* @backlog: The maximum number of outstanding un-accepted inbound listen
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* requests to queue.
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*
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* The source address and port number are specified in the IW CM identifier
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* structure.
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*/
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int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
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/**
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* iw_cm_accept - Called to accept an incoming connect request.
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*
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* @cm_id: The IW CM identifier associated with the connection request.
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* @iw_param: Pointer to a structure containing connection establishment
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* parameters.
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*
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* The specified cm_id will have been provided in the event data for a
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* CONNECT_REQUEST event. Subsequent events related to this connection will be
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* delivered to the specified IW CM identifier prior and may occur prior to
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* the return of this function. If this function returns a non-zero value, the
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* client can assume that no events will be delivered to the specified IW CM
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* identifier.
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*/
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int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
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/**
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* iw_cm_reject - Reject an incoming connection request.
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*
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* @cm_id: Connection identifier associated with the request.
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* @private_daa: Pointer to data to deliver to the remote peer as part of the
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* reject message.
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* @private_data_len: The number of bytes in the private_data parameter.
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*
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* The client can assume that no events will be delivered to the specified IW
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* CM identifier following the return of this function. The private_data
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* buffer is available for reuse when this function returns.
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*/
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int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,
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u8 private_data_len);
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/**
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* iw_cm_connect - Called to request a connection to a remote peer.
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*
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* @cm_id: The IW CM identifier for the connection.
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* @iw_param: Pointer to a structure containing connection establishment
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* parameters.
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*
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* Events may be delivered to the specified IW CM identifier prior to the
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* return of this function. If this function returns a non-zero value, the
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* client can assume that no events will be delivered to the specified IW CM
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* identifier.
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*/
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int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
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/**
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* iw_cm_disconnect - Close the specified connection.
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*
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* @cm_id: The IW CM identifier to close.
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* @abrupt: If 0, the connection will be closed gracefully, otherwise, the
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* connection will be reset.
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*
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* The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is
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* delivered.
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*/
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int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
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/**
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* iw_cm_init_qp_attr - Called to initialize the attributes of the QP
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* associated with a IW CM identifier.
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*
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* @cm_id: The IW CM identifier associated with the QP
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* @qp_attr: Pointer to the QP attributes structure.
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* @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are
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* valid.
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*/
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int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,
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int *qp_attr_mask);
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#endif /* IW_CM_H */
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