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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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;
60 * iw_cm_handler - Function to be called by the IW CM when delivering events
63 * @cm_id: The IW CM identifier associated with the event.
64 * @event: Pointer to the event structure.
66 typedef int (*iw_cm_handler)(struct iw_cm_id *cm_id,
67 struct iw_cm_event *event);
70 * iw_event_handler - Function called by the provider when delivering provider
71 * events to the IW CM. Returns either 0 indicating the event was processed
72 * or -errno if the event could not be processed.
74 * @cm_id: The IW CM identifier associated with the event.
75 * @event: Pointer to the event structure.
77 typedef int (*iw_event_handler)(struct iw_cm_id *cm_id,
78 struct iw_cm_event *event);
81 iw_cm_handler cm_handler; /* client callback function */
82 void *context; /* client cb context */
83 struct ib_device *device;
84 struct sockaddr_in local_addr;
85 struct sockaddr_in remote_addr;
86 void *provider_data; /* provider private data */
87 iw_event_handler event_handler; /* cb for provider
89 /* Used by provider to add and remove refs on IW cm_id */
90 void (*add_ref)(struct iw_cm_id *);
91 void (*rem_ref)(struct iw_cm_id *);
94 struct iw_cm_conn_param {
95 const void *private_data;
103 void (*add_ref)(struct ib_qp *qp);
105 void (*rem_ref)(struct ib_qp *qp);
107 struct ib_qp * (*get_qp)(struct ib_device *device,
110 int (*connect)(struct iw_cm_id *cm_id,
111 struct iw_cm_conn_param *conn_param);
113 int (*accept)(struct iw_cm_id *cm_id,
114 struct iw_cm_conn_param *conn_param);
116 int (*reject)(struct iw_cm_id *cm_id,
117 const void *pdata, u8 pdata_len);
119 int (*create_listen)(struct iw_cm_id *cm_id,
122 int (*destroy_listen)(struct iw_cm_id *cm_id);
126 * iw_create_cm_id - Create an IW CM identifier.
128 * @device: The IB device on which to create the IW CM identier.
129 * @event_handler: User callback invoked to report events associated with the
130 * returned IW CM identifier.
131 * @context: User specified context associated with the id.
133 struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
134 iw_cm_handler cm_handler, void *context);
137 * iw_destroy_cm_id - Destroy an IW CM identifier.
139 * @cm_id: The previously created IW CM identifier to destroy.
141 * The client can assume that no events will be delivered for the CM ID after
142 * this function returns.
144 void iw_destroy_cm_id(struct iw_cm_id *cm_id);
147 * iw_cm_bind_qp - Unbind the specified IW CM identifier and QP
149 * @cm_id: The IW CM idenfier to unbind from the QP.
152 * This is called by the provider when destroying the QP to ensure
153 * that any references held by the IWCM are released. It may also
154 * be called by the IWCM when destroying a CM_ID to that any
155 * references held by the provider are released.
157 void iw_cm_unbind_qp(struct iw_cm_id *cm_id, struct ib_qp *qp);
160 * iw_cm_get_qp - Return the ib_qp associated with a QPN
162 * @ib_device: The IB device
163 * @qpn: The queue pair number
165 struct ib_qp *iw_cm_get_qp(struct ib_device *device, int qpn);
168 * iw_cm_listen - Listen for incoming connection requests on the
169 * specified IW CM id.
171 * @cm_id: The IW CM identifier.
172 * @backlog: The maximum number of outstanding un-accepted inbound listen
175 * The source address and port number are specified in the IW CM identifier
178 int iw_cm_listen(struct iw_cm_id *cm_id, int backlog);
181 * iw_cm_accept - Called to accept an incoming connect request.
183 * @cm_id: The IW CM identifier associated with the connection request.
184 * @iw_param: Pointer to a structure containing connection establishment
187 * The specified cm_id will have been provided in the event data for a
188 * CONNECT_REQUEST event. Subsequent events related to this connection will be
189 * delivered to the specified IW CM identifier prior and may occur prior to
190 * the return of this function. If this function returns a non-zero value, the
191 * client can assume that no events will be delivered to the specified IW CM
194 int iw_cm_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
197 * iw_cm_reject - Reject an incoming connection request.
199 * @cm_id: Connection identifier associated with the request.
200 * @private_daa: Pointer to data to deliver to the remote peer as part of the
202 * @private_data_len: The number of bytes in the private_data parameter.
204 * The client can assume that no events will be delivered to the specified IW
205 * CM identifier following the return of this function. The private_data
206 * buffer is available for reuse when this function returns.
208 int iw_cm_reject(struct iw_cm_id *cm_id, const void *private_data,
209 u8 private_data_len);
212 * iw_cm_connect - Called to request a connection to a remote peer.
214 * @cm_id: The IW CM identifier for the connection.
215 * @iw_param: Pointer to a structure containing connection establishment
218 * Events may be delivered to the specified IW CM identifier prior to the
219 * return of this function. If this function returns a non-zero value, the
220 * client can assume that no events will be delivered to the specified IW CM
223 int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param);
226 * iw_cm_disconnect - Close the specified connection.
228 * @cm_id: The IW CM identifier to close.
229 * @abrupt: If 0, the connection will be closed gracefully, otherwise, the
230 * connection will be reset.
232 * The IW CM identifier is still active until the IW_CM_EVENT_CLOSE event is
235 int iw_cm_disconnect(struct iw_cm_id *cm_id, int abrupt);
238 * iw_cm_init_qp_attr - Called to initialize the attributes of the QP
239 * associated with a IW CM identifier.
241 * @cm_id: The IW CM identifier associated with the QP
242 * @qp_attr: Pointer to the QP attributes structure.
243 * @qp_attr_mask: Pointer to a bit vector specifying which QP attributes are
246 int iw_cm_init_qp_attr(struct iw_cm_id *cm_id, struct ib_qp_attr *qp_attr,