2 * Copyright (c) 2005 Network Appliance, Inc. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
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9 * OpenIB.org BSD license below:
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12 * without modification, are permitted provided that the following
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24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 #include <rdma/ib_cm.h>
41 enum iw_cm_event_type {
42 IW_CM_EVENT_CONNECT_REQUEST = 1, /* connect request received */
43 IW_CM_EVENT_CONNECT_REPLY, /* reply from active connect request */
44 IW_CM_EVENT_ESTABLISHED, /* passive side accept successful */
45 IW_CM_EVENT_DISCONNECT, /* orderly shutdown */
46 IW_CM_EVENT_CLOSE /* close complete */
50 enum iw_cm_event_type event;
52 struct sockaddr_in local_addr;
53 struct sockaddr_in remote_addr;
62 * iw_cm_handler - Function to be called by the IW CM when delivering events
65 * @cm_id: The IW CM identifier associated with the event.
66 * @event: Pointer to the event structure.
68 typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,
69 struct iw_cm_event *event);
72 * iw_event_handler - Function called by the provider when delivering provider
73 * events to the IW CM. Returns either 0 indicating the event was processed
74 * or -errno if the event could not be processed.
76 * @cm_id: The IW CM identifier associated with the event.
77 * @event: Pointer to the event structure.
79 typedef int (*iw_event_handler)(struct iw_cm_id *cm_id,
80 struct iw_cm_event *event);
83 iw_cm_handler cm_handler; /* client callback function */
84 void *context; /* client cb context */
85 struct ib_device *device;
86 struct sockaddr_in local_addr;
87 struct sockaddr_in remote_addr;
88 void *provider_data; /* provider private data */
89 iw_event_handler event_handler; /* cb for provider
91 /* Used by provider to add and remove refs on IW cm_id */
92 void (*add_ref)(struct iw_cm_id *);
93 void (*rem_ref)(struct iw_cm_id *);
96 struct iw_cm_conn_param {
97 const void *private_data;
105 void (*add_ref)(struct ib_qp *qp);
107 void (*rem_ref)(struct ib_qp *qp);
109 struct ib_qp * (*get_qp)(struct ib_device *device,
112 int (*connect)(struct iw_cm_id *cm_id,
113 struct iw_cm_conn_param *conn_param);
115 int (*accept)(struct iw_cm_id *cm_id,
116 struct iw_cm_conn_param *conn_param);
118 int (*reject)(struct iw_cm_id *cm_id,
119 const void *pdata, u8 pdata_len);
121 int (*create_listen)(struct iw_cm_id *cm_id,
124 int (*destroy_listen)(struct iw_cm_id *cm_id);
128 * iw_create_cm_id - Create an IW CM identifier.
130 * @device: The IB device on which to create the IW CM identier.
131 * @event_handler: User callback invoked to report events associated with the
132 * returned IW CM identifier.
133 * @context: User specified context associated with the id.
135 struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
136 iw_cm_handler cm_handler, void *context);
139 * iw_destroy_cm_id - Destroy an IW CM identifier.
141 * @cm_id: The previously created IW CM identifier to destroy.
143 * The client can assume that no events will be delivered for the CM ID after
144 * this function returns.
146 void iw_destroy_cm_id(struct iw_cm_id *cm_id);
149 * iw_cm_bind_qp - Unbind the specified IW CM identifier and QP
151 * @cm_id: The IW CM idenfier to unbind from the QP.
154 * This is called by the provider when destroying the QP to ensure
155 * that any references held by the IWCM are released. It may also
156 * be called by the IWCM when destroying a CM_ID to that any
157 * references held by the provider are released.
159 void iw_cm_unbind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
162 * iw_cm_get_qp - Return the ib_qp associated with a QPN
164 * @ib_device: The IB device
165 * @qpn: The queue pair number
167 struct ib_qp *iw_cm_get_qp(struct ib_device *device, int qpn);
170 * iw_cm_listen - Listen for incoming connection requests on the
171 * specified IW CM id.
173 * @cm_id: The IW CM identifier.
174 * @backlog: The maximum number of outstanding un-accepted inbound listen
177 * The source address and port number are specified in the IW CM identifier
180 int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
183 * iw_cm_accept - Called to accept an incoming connect request.
185 * @cm_id: The IW CM identifier associated with the connection request.
186 * @iw_param: Pointer to a structure containing connection establishment
189 * The specified cm_id will have been provided in the event data for a
190 * CONNECT_REQUEST event. Subsequent events related to this connection will be
191 * delivered to the specified IW CM identifier prior and may occur prior to
192 * the return of this function. If this function returns a non-zero value, the
193 * client can assume that no events will be delivered to the specified IW CM
196 int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
199 * iw_cm_reject - Reject an incoming connection request.
201 * @cm_id: Connection identifier associated with the request.
202 * @private_daa: Pointer to data to deliver to the remote peer as part of the
204 * @private_data_len: The number of bytes in the private_data parameter.
206 * The client can assume that no events will be delivered to the specified IW
207 * CM identifier following the return of this function. The private_data
208 * buffer is available for reuse when this function returns.
210 int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,
211 u8 private_data_len);
214 * iw_cm_connect - Called to request a connection to a remote peer.
216 * @cm_id: The IW CM identifier for the connection.
217 * @iw_param: Pointer to a structure containing connection establishment
220 * Events may be delivered to the specified IW CM identifier prior to the
221 * return of this function. If this function returns a non-zero value, the
222 * client can assume that no events will be delivered to the specified IW CM
225 int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
228 * iw_cm_disconnect - Close the specified connection.
230 * @cm_id: The IW CM identifier to close.
231 * @abrupt: If 0, the connection will be closed gracefully, otherwise, the
232 * connection will be reset.
234 * The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is
237 int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
240 * iw_cm_init_qp_attr - Called to initialize the attributes of the QP
241 * associated with a IW CM identifier.
243 * @cm_id: The IW CM identifier associated with the QP
244 * @qp_attr: Pointer to the QP attributes structure.
245 * @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are
248 int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,