2 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 #include <rdma/iw_cm.h>
39 int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
41 struct c2_dev *c2dev = to_c2dev(cm_id->device);
44 struct c2wr_qp_connect_req *wr; /* variable size needs a malloc. */
45 struct c2_vq_req *vq_req;
48 ibqp = c2_get_qp(cm_id->device, iw_param->qpn);
53 /* Associate QP <--> CM_ID */
54 cm_id->provider_data = qp;
55 cm_id->add_ref(cm_id);
59 * only support the max private_data length
61 if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) {
66 * Set the rdma read limits
68 err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird);
73 * Create and send a WR_QP_CONNECT...
75 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
81 vq_req = vq_req_alloc(c2dev);
87 c2_wr_set_id(wr, CCWR_QP_CONNECT);
89 wr->rnic_handle = c2dev->adapter_handle;
90 wr->qp_handle = qp->adapter_handle;
92 wr->remote_addr = cm_id->remote_addr.sin_addr.s_addr;
93 wr->remote_port = cm_id->remote_addr.sin_port;
96 * Move any private data from the callers's buf into
99 if (iw_param->private_data) {
100 wr->private_data_length =
101 cpu_to_be32(iw_param->private_data_len);
102 memcpy(&wr->private_data[0], iw_param->private_data,
103 iw_param->private_data_len);
105 wr->private_data_length = 0;
108 * Send WR to adapter. NOTE: There is no synch reply from
111 err = vq_send_wr(c2dev, (union c2wr *) wr);
112 vq_req_free(c2dev, vq_req);
119 * If we fail, release reference on QP and
120 * disassociate QP from CM_ID
122 cm_id->provider_data = NULL;
124 cm_id->rem_ref(cm_id);
129 int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog)
131 struct c2_dev *c2dev;
132 struct c2wr_ep_listen_create_req wr;
133 struct c2wr_ep_listen_create_rep *reply;
134 struct c2_vq_req *vq_req;
137 c2dev = to_c2dev(cm_id->device);
142 * Allocate verbs request.
144 vq_req = vq_req_alloc(c2dev);
151 c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE);
152 wr.hdr.context = (u64) (unsigned long) vq_req;
153 wr.rnic_handle = c2dev->adapter_handle;
154 wr.local_addr = cm_id->local_addr.sin_addr.s_addr;
155 wr.local_port = cm_id->local_addr.sin_port;
156 wr.backlog = cpu_to_be32(backlog);
157 wr.user_context = (u64) (unsigned long) cm_id;
160 * Reference the request struct. Dereferenced in the int handler.
162 vq_req_get(c2dev, vq_req);
167 err = vq_send_wr(c2dev, (union c2wr *) & wr);
169 vq_req_put(c2dev, vq_req);
174 * Wait for reply from adapter
176 err = vq_wait_for_reply(c2dev, vq_req);
184 (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg;
190 if ((err = c2_errno(reply)) != 0)
194 * Keep the adapter handle. Used in subsequent destroy
196 cm_id->provider_data = (void*)(unsigned long) reply->ep_handle;
201 vq_repbuf_free(c2dev, reply);
202 vq_req_free(c2dev, vq_req);
207 vq_repbuf_free(c2dev, reply);
209 vq_req_free(c2dev, vq_req);
214 int c2_llp_service_destroy(struct iw_cm_id *cm_id)
217 struct c2_dev *c2dev;
218 struct c2wr_ep_listen_destroy_req wr;
219 struct c2wr_ep_listen_destroy_rep *reply;
220 struct c2_vq_req *vq_req;
223 c2dev = to_c2dev(cm_id->device);
228 * Allocate verbs request.
230 vq_req = vq_req_alloc(c2dev);
237 c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY);
238 wr.hdr.context = (unsigned long) vq_req;
239 wr.rnic_handle = c2dev->adapter_handle;
240 wr.ep_handle = (u32)(unsigned long)cm_id->provider_data;
243 * reference the request struct. dereferenced in the int handler.
245 vq_req_get(c2dev, vq_req);
250 err = vq_send_wr(c2dev, (union c2wr *) & wr);
252 vq_req_put(c2dev, vq_req);
257 * Wait for reply from adapter
259 err = vq_wait_for_reply(c2dev, vq_req);
266 reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg;
271 if ((err = c2_errno(reply)) != 0)
275 vq_repbuf_free(c2dev, reply);
277 vq_req_free(c2dev, vq_req);
281 int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
283 struct c2_dev *c2dev = to_c2dev(cm_id->device);
286 struct c2wr_cr_accept_req *wr; /* variable length WR */
287 struct c2_vq_req *vq_req;
288 struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */
291 ibqp = c2_get_qp(cm_id->device, iw_param->qpn);
296 /* Set the RDMA read limits */
297 err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird);
301 /* Allocate verbs request. */
302 vq_req = vq_req_alloc(c2dev);
308 vq_req->cm_id = cm_id;
309 vq_req->event = IW_CM_EVENT_ESTABLISHED;
311 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
318 c2_wr_set_id(wr, CCWR_CR_ACCEPT);
319 wr->hdr.context = (unsigned long) vq_req;
320 wr->rnic_handle = c2dev->adapter_handle;
321 wr->ep_handle = (u32) (unsigned long) cm_id->provider_data;
322 wr->qp_handle = qp->adapter_handle;
324 /* Replace the cr_handle with the QP after accept */
325 cm_id->provider_data = qp;
326 cm_id->add_ref(cm_id);
329 cm_id->provider_data = qp;
331 /* Validate private_data length */
332 if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) {
337 if (iw_param->private_data) {
338 wr->private_data_length = cpu_to_be32(iw_param->private_data_len);
339 memcpy(&wr->private_data[0],
340 iw_param->private_data, iw_param->private_data_len);
342 wr->private_data_length = 0;
344 /* Reference the request struct. Dereferenced in the int handler. */
345 vq_req_get(c2dev, vq_req);
347 /* Send WR to adapter */
348 err = vq_send_wr(c2dev, (union c2wr *) wr);
350 vq_req_put(c2dev, vq_req);
354 /* Wait for reply from adapter */
355 err = vq_wait_for_reply(c2dev, vq_req);
359 /* Check that reply is present */
360 reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg;
366 err = c2_errno(reply);
367 vq_repbuf_free(c2dev, reply);
370 c2_set_qp_state(qp, C2_QP_STATE_RTS);
373 vq_req_free(c2dev, vq_req);
377 * If we fail, release reference on QP and
378 * disassociate QP from CM_ID
380 cm_id->provider_data = NULL;
382 cm_id->rem_ref(cm_id);
387 int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
389 struct c2_dev *c2dev;
390 struct c2wr_cr_reject_req wr;
391 struct c2_vq_req *vq_req;
392 struct c2wr_cr_reject_rep *reply;
395 c2dev = to_c2dev(cm_id->device);
398 * Allocate verbs request.
400 vq_req = vq_req_alloc(c2dev);
407 c2_wr_set_id(&wr, CCWR_CR_REJECT);
408 wr.hdr.context = (unsigned long) vq_req;
409 wr.rnic_handle = c2dev->adapter_handle;
410 wr.ep_handle = (u32) (unsigned long) cm_id->provider_data;
413 * reference the request struct. dereferenced in the int handler.
415 vq_req_get(c2dev, vq_req);
420 err = vq_send_wr(c2dev, (union c2wr *) & wr);
422 vq_req_put(c2dev, vq_req);
427 * Wait for reply from adapter
429 err = vq_wait_for_reply(c2dev, vq_req);
436 reply = (struct c2wr_cr_reject_rep *) (unsigned long)
442 err = c2_errno(reply);
446 vq_repbuf_free(c2dev, reply);
449 vq_req_free(c2dev, vq_req);