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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22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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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_storage local_addr;
53 struct sockaddr_storage 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_storage local_addr;
87 struct sockaddr_storage 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 *);
97 struct iw_cm_conn_param {
98 const void *private_data;
106 void (*add_ref)(struct ib_qp *qp);
108 void (*rem_ref)(struct ib_qp *qp);
110 struct ib_qp * (*get_qp)(struct ib_device *device,
113 int (*connect)(struct iw_cm_id *cm_id,
114 struct iw_cm_conn_param *conn_param);
116 int (*accept)(struct iw_cm_id *cm_id,
117 struct iw_cm_conn_param *conn_param);
119 int (*reject)(struct iw_cm_id *cm_id,
120 const void *pdata, u8 pdata_len);
122 int (*create_listen)(struct iw_cm_id *cm_id,
125 int (*destroy_listen)(struct iw_cm_id *cm_id);
129 * iw_create_cm_id - Create an IW CM identifier.
131 * @device: The IB device on which to create the IW CM identier.
132 * @event_handler: User callback invoked to report events associated with the
133 * returned IW CM identifier.
134 * @context: User specified context associated with the id.
136 struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
137 iw_cm_handler cm_handler, void *context);
140 * iw_destroy_cm_id - Destroy an IW CM identifier.
142 * @cm_id: The previously created IW CM identifier to destroy.
144 * The client can assume that no events will be delivered for the CM ID after
145 * this function returns.
147 void iw_destroy_cm_id(struct iw_cm_id *cm_id);
150 * iw_cm_bind_qp - Unbind the specified IW CM identifier and QP
152 * @cm_id: The IW CM idenfier to unbind from the QP.
155 * This is called by the provider when destroying the QP to ensure
156 * that any references held by the IWCM are released. It may also
157 * be called by the IWCM when destroying a CM_ID to that any
158 * references held by the provider are released.
160 void iw_cm_unbind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
163 * iw_cm_get_qp - Return the ib_qp associated with a QPN
165 * @ib_device: The IB device
166 * @qpn: The queue pair number
168 struct ib_qp *iw_cm_get_qp(struct ib_device *device, int qpn);
171 * iw_cm_listen - Listen for incoming connection requests on the
172 * specified IW CM id.
174 * @cm_id: The IW CM identifier.
175 * @backlog: The maximum number of outstanding un-accepted inbound listen
178 * The source address and port number are specified in the IW CM identifier
181 int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
184 * iw_cm_accept - Called to accept an incoming connect request.
186 * @cm_id: The IW CM identifier associated with the connection request.
187 * @iw_param: Pointer to a structure containing connection establishment
190 * The specified cm_id will have been provided in the event data for a
191 * CONNECT_REQUEST event. Subsequent events related to this connection will be
192 * delivered to the specified IW CM identifier prior and may occur prior to
193 * the return of this function. If this function returns a non-zero value, the
194 * client can assume that no events will be delivered to the specified IW CM
197 int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
200 * iw_cm_reject - Reject an incoming connection request.
202 * @cm_id: Connection identifier associated with the request.
203 * @private_daa: Pointer to data to deliver to the remote peer as part of the
205 * @private_data_len: The number of bytes in the private_data parameter.
207 * The client can assume that no events will be delivered to the specified IW
208 * CM identifier following the return of this function. The private_data
209 * buffer is available for reuse when this function returns.
211 int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,
212 u8 private_data_len);
215 * iw_cm_connect - Called to request a connection to a remote peer.
217 * @cm_id: The IW CM identifier for the connection.
218 * @iw_param: Pointer to a structure containing connection establishment
221 * Events may be delivered to the specified IW CM identifier prior to the
222 * return of this function. If this function returns a non-zero value, the
223 * client can assume that no events will be delivered to the specified IW CM
226 int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
229 * iw_cm_disconnect - Close the specified connection.
231 * @cm_id: The IW CM identifier to close.
232 * @abrupt: If 0, the connection will be closed gracefully, otherwise, the
233 * connection will be reset.
235 * The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is
238 int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
241 * iw_cm_init_qp_attr - Called to initialize the attributes of the QP
242 * associated with a IW CM identifier.
244 * @cm_id: The IW CM identifier associated with the QP
245 * @qp_attr: Pointer to the QP attributes structure.
246 * @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are
249 int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,