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
34 #include <linux/slab.h>
39 #include <rdma/iw_cm.h>
41 int c2_llp_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
43 struct c2_dev *c2dev = to_c2dev(cm_id->device);
46 struct c2wr_qp_connect_req *wr; /* variable size needs a malloc. */
47 struct c2_vq_req *vq_req;
49 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
51 if (cm_id->remote_addr.ss_family != AF_INET)
54 ibqp = c2_get_qp(cm_id->device, iw_param->qpn);
59 /* Associate QP <--> CM_ID */
60 cm_id->provider_data = qp;
61 cm_id->add_ref(cm_id);
65 * only support the max private_data length
67 if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) {
72 * Set the rdma read limits
74 err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird);
79 * Create and send a WR_QP_CONNECT...
81 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
87 vq_req = vq_req_alloc(c2dev);
93 c2_wr_set_id(wr, CCWR_QP_CONNECT);
95 wr->rnic_handle = c2dev->adapter_handle;
96 wr->qp_handle = qp->adapter_handle;
98 wr->remote_addr = raddr->sin_addr.s_addr;
99 wr->remote_port = raddr->sin_port;
102 * Move any private data from the callers's buf into
105 if (iw_param->private_data) {
106 wr->private_data_length =
107 cpu_to_be32(iw_param->private_data_len);
108 memcpy(&wr->private_data[0], iw_param->private_data,
109 iw_param->private_data_len);
111 wr->private_data_length = 0;
114 * Send WR to adapter. NOTE: There is no synch reply from
117 err = vq_send_wr(c2dev, (union c2wr *) wr);
118 vq_req_free(c2dev, vq_req);
125 * If we fail, release reference on QP and
126 * disassociate QP from CM_ID
128 cm_id->provider_data = NULL;
130 cm_id->rem_ref(cm_id);
135 int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog)
137 struct c2_dev *c2dev;
138 struct c2wr_ep_listen_create_req wr;
139 struct c2wr_ep_listen_create_rep *reply;
140 struct c2_vq_req *vq_req;
142 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
144 if (cm_id->local_addr.ss_family != AF_INET)
147 c2dev = to_c2dev(cm_id->device);
152 * Allocate verbs request.
154 vq_req = vq_req_alloc(c2dev);
161 c2_wr_set_id(&wr, CCWR_EP_LISTEN_CREATE);
162 wr.hdr.context = (u64) (unsigned long) vq_req;
163 wr.rnic_handle = c2dev->adapter_handle;
164 wr.local_addr = laddr->sin_addr.s_addr;
165 wr.local_port = laddr->sin_port;
166 wr.backlog = cpu_to_be32(backlog);
167 wr.user_context = (u64) (unsigned long) cm_id;
170 * Reference the request struct. Dereferenced in the int handler.
172 vq_req_get(c2dev, vq_req);
177 err = vq_send_wr(c2dev, (union c2wr *) & wr);
179 vq_req_put(c2dev, vq_req);
184 * Wait for reply from adapter
186 err = vq_wait_for_reply(c2dev, vq_req);
194 (struct c2wr_ep_listen_create_rep *) (unsigned long) vq_req->reply_msg;
200 if ((err = c2_errno(reply)) != 0)
204 * Keep the adapter handle. Used in subsequent destroy
206 cm_id->provider_data = (void*)(unsigned long) reply->ep_handle;
211 vq_repbuf_free(c2dev, reply);
212 vq_req_free(c2dev, vq_req);
217 vq_repbuf_free(c2dev, reply);
219 vq_req_free(c2dev, vq_req);
224 int c2_llp_service_destroy(struct iw_cm_id *cm_id)
227 struct c2_dev *c2dev;
228 struct c2wr_ep_listen_destroy_req wr;
229 struct c2wr_ep_listen_destroy_rep *reply;
230 struct c2_vq_req *vq_req;
233 c2dev = to_c2dev(cm_id->device);
238 * Allocate verbs request.
240 vq_req = vq_req_alloc(c2dev);
247 c2_wr_set_id(&wr, CCWR_EP_LISTEN_DESTROY);
248 wr.hdr.context = (unsigned long) vq_req;
249 wr.rnic_handle = c2dev->adapter_handle;
250 wr.ep_handle = (u32)(unsigned long)cm_id->provider_data;
253 * reference the request struct. dereferenced in the int handler.
255 vq_req_get(c2dev, vq_req);
260 err = vq_send_wr(c2dev, (union c2wr *) & wr);
262 vq_req_put(c2dev, vq_req);
267 * Wait for reply from adapter
269 err = vq_wait_for_reply(c2dev, vq_req);
276 reply=(struct c2wr_ep_listen_destroy_rep *)(unsigned long)vq_req->reply_msg;
281 if ((err = c2_errno(reply)) != 0)
285 vq_repbuf_free(c2dev, reply);
287 vq_req_free(c2dev, vq_req);
291 int c2_llp_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
293 struct c2_dev *c2dev = to_c2dev(cm_id->device);
296 struct c2wr_cr_accept_req *wr; /* variable length WR */
297 struct c2_vq_req *vq_req;
298 struct c2wr_cr_accept_rep *reply; /* VQ Reply msg ptr. */
301 ibqp = c2_get_qp(cm_id->device, iw_param->qpn);
306 /* Set the RDMA read limits */
307 err = c2_qp_set_read_limits(c2dev, qp, iw_param->ord, iw_param->ird);
311 /* Allocate verbs request. */
312 vq_req = vq_req_alloc(c2dev);
318 vq_req->cm_id = cm_id;
319 vq_req->event = IW_CM_EVENT_ESTABLISHED;
321 wr = kmalloc(c2dev->req_vq.msg_size, GFP_KERNEL);
328 c2_wr_set_id(wr, CCWR_CR_ACCEPT);
329 wr->hdr.context = (unsigned long) vq_req;
330 wr->rnic_handle = c2dev->adapter_handle;
331 wr->ep_handle = (u32) (unsigned long) cm_id->provider_data;
332 wr->qp_handle = qp->adapter_handle;
334 /* Replace the cr_handle with the QP after accept */
335 cm_id->provider_data = qp;
336 cm_id->add_ref(cm_id);
339 cm_id->provider_data = qp;
341 /* Validate private_data length */
342 if (iw_param->private_data_len > C2_MAX_PRIVATE_DATA_SIZE) {
347 if (iw_param->private_data) {
348 wr->private_data_length = cpu_to_be32(iw_param->private_data_len);
349 memcpy(&wr->private_data[0],
350 iw_param->private_data, iw_param->private_data_len);
352 wr->private_data_length = 0;
354 /* Reference the request struct. Dereferenced in the int handler. */
355 vq_req_get(c2dev, vq_req);
357 /* Send WR to adapter */
358 err = vq_send_wr(c2dev, (union c2wr *) wr);
360 vq_req_put(c2dev, vq_req);
364 /* Wait for reply from adapter */
365 err = vq_wait_for_reply(c2dev, vq_req);
369 /* Check that reply is present */
370 reply = (struct c2wr_cr_accept_rep *) (unsigned long) vq_req->reply_msg;
376 err = c2_errno(reply);
377 vq_repbuf_free(c2dev, reply);
380 c2_set_qp_state(qp, C2_QP_STATE_RTS);
383 vq_req_free(c2dev, vq_req);
387 * If we fail, release reference on QP and
388 * disassociate QP from CM_ID
390 cm_id->provider_data = NULL;
392 cm_id->rem_ref(cm_id);
397 int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
399 struct c2_dev *c2dev;
400 struct c2wr_cr_reject_req wr;
401 struct c2_vq_req *vq_req;
402 struct c2wr_cr_reject_rep *reply;
405 c2dev = to_c2dev(cm_id->device);
408 * Allocate verbs request.
410 vq_req = vq_req_alloc(c2dev);
417 c2_wr_set_id(&wr, CCWR_CR_REJECT);
418 wr.hdr.context = (unsigned long) vq_req;
419 wr.rnic_handle = c2dev->adapter_handle;
420 wr.ep_handle = (u32) (unsigned long) cm_id->provider_data;
423 * reference the request struct. dereferenced in the int handler.
425 vq_req_get(c2dev, vq_req);
430 err = vq_send_wr(c2dev, (union c2wr *) & wr);
432 vq_req_put(c2dev, vq_req);
437 * Wait for reply from adapter
439 err = vq_wait_for_reply(c2dev, vq_req);
446 reply = (struct c2wr_cr_reject_rep *) (unsigned long)
452 err = c2_errno(reply);
456 vq_repbuf_free(c2dev, reply);
459 vq_req_free(c2dev, vq_req);