1 /*
2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
3 */
4
5 /*
6 * This file contains code imported from the OFED rds source file ib_rdma.c
7 * Oracle elects to have and use the contents of ib_rdma.c under and governed
8 * by the OpenIB.org BSD license (see below for full license text). However,
9 * the following notice accompanied the original version of this file:
10 */
11
12 /*
13 * Copyright (c) 2006 Oracle. All rights reserved.
14 *
15 * This software is available to you under a choice of one of two
16 * licenses. You may choose to be licensed under the terms of the GNU
17 * General Public License (GPL) Version 2, available from the file
18 * COPYING in the main directory of this source tree, or the
19 * OpenIB.org BSD license below:
20 *
21 * Redistribution and use in source and binary forms, with or
22 * without modification, are permitted provided that the following
23 * conditions are met:
24 *
25 * - Redistributions of source code must retain the above
26 * copyright notice, this list of conditions and the following
27 * disclaimer.
28 *
29 * - Redistributions in binary form must reproduce the above
30 * copyright notice, this list of conditions and the following
31 * disclaimer in the documentation and/or other materials
32 * provided with the distribution.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
35 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
36 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
37 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
38 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
39 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
40 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
41 * SOFTWARE.
42 *
43 */
44 #include <sys/rds.h>
45 #include <netinet/in.h>
46
47 #include <sys/ib/clients/rdsv3/rdsv3.h>
48 #include <sys/ib/clients/rdsv3/rdma.h>
49 #include <sys/ib/clients/rdsv3/ib.h>
50 #include <sys/ib/clients/rdsv3/rdsv3_debug.h>
51
52 /*
53 * This is stored as mr->r_trans_private.
54 */
55 struct rdsv3_ib_mr {
56 list_node_t m_obj; /* list obj of rdsv3_fmr_pool list */
57 struct rdsv3_ib_device *m_device;
58 struct rdsv3_fmr_pool *m_pool; /* hca fmr pool */
59 unsigned int m_inval:1;
60
61 struct rdsv3_scatterlist *sg;
62 unsigned int sg_len;
63 uint64_t *dma;
64 int sg_dma_len;
65
66 /* DDI pinned memory */
67 ddi_umem_cookie_t umem_cookie;
68 /* IBTF type definitions */
69 ibt_hca_hdl_t rc_hca_hdl;
70 ibt_fmr_pool_hdl_t fmr_pool_hdl;
71 ibt_ma_hdl_t rc_ma_hdl;
72 ibt_mr_hdl_t rc_fmr_hdl;
73 ibt_pmr_desc_t rc_mem_desc;
74 };
75
76 /*
77 * delayed freed fmr's
78 */
79 struct rdsv3_fmr_pool {
80 list_t f_list; /* list of freed mr */
81 kmutex_t f_lock; /* lock of fmr pool */
82 int32_t f_listcnt;
83 };
84
85 static int rdsv3_ib_flush_mr_pool(struct rdsv3_ib_device *rds_ibdev,
86 ibt_fmr_pool_hdl_t pool_hdl, int free_all);
87 static void rdsv3_ib_teardown_mr(struct rdsv3_ib_mr *ibmr);
88 static void rdsv3_ib_mr_pool_flush_worker(struct rdsv3_work_s *work);
89 static struct rdsv3_ib_mr *rdsv3_ib_alloc_fmr(struct rdsv3_ib_device
90 *rds_ibdev);
91 static int rdsv3_ib_map_fmr(struct rdsv3_ib_device *rds_ibdev,
92 struct rdsv3_ib_mr *ibmr, struct buf *bp, unsigned int nents);
93
94 static struct rdsv3_ib_device *
rdsv3_ib_get_device(uint32_be_t ipaddr)95 rdsv3_ib_get_device(uint32_be_t ipaddr)
96 {
97 struct rdsv3_ib_device *rds_ibdev;
98 struct rdsv3_ib_ipaddr *i_ipaddr;
99
100 RDSV3_DPRINTF4("rdsv3_ib_get_device", "Enter: ipaddr: 0x%x", ipaddr);
101
102 RDSV3_FOR_EACH_LIST_NODE(rds_ibdev, &rdsv3_ib_devices, list) {
103 rw_enter(&rds_ibdev->rwlock, RW_READER);
104 RDSV3_FOR_EACH_LIST_NODE(i_ipaddr, &rds_ibdev->ipaddr_list,
105 list) {
106 if (i_ipaddr->ipaddr == ipaddr) {
107 rw_exit(&rds_ibdev->rwlock);
108 return (rds_ibdev);
109 }
110 }
111 rw_exit(&rds_ibdev->rwlock);
112 }
113
114 RDSV3_DPRINTF4("rdsv3_ib_get_device", "Return: ipaddr: 0x%x", ipaddr);
115
116 return (NULL);
117 }
118
119 static int
rdsv3_ib_add_ipaddr(struct rdsv3_ib_device * rds_ibdev,uint32_be_t ipaddr)120 rdsv3_ib_add_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
121 {
122 struct rdsv3_ib_ipaddr *i_ipaddr;
123
124 RDSV3_DPRINTF4("rdsv3_ib_add_ipaddr", "rds_ibdev: %p ipaddr: %x",
125 rds_ibdev, ipaddr);
126
127 i_ipaddr = kmem_alloc(sizeof (*i_ipaddr), KM_NOSLEEP);
128 if (!i_ipaddr)
129 return (-ENOMEM);
130
131 i_ipaddr->ipaddr = ipaddr;
132
133 rw_enter(&rds_ibdev->rwlock, RW_WRITER);
134 list_insert_tail(&rds_ibdev->ipaddr_list, i_ipaddr);
135 rw_exit(&rds_ibdev->rwlock);
136
137 return (0);
138 }
139
140 static void
rdsv3_ib_remove_ipaddr(struct rdsv3_ib_device * rds_ibdev,uint32_be_t ipaddr)141 rdsv3_ib_remove_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
142 {
143 struct rdsv3_ib_ipaddr *i_ipaddr, *next;
144 struct rdsv3_ib_ipaddr *to_free = NULL;
145
146 RDSV3_DPRINTF4("rdsv3_ib_remove_ipaddr", "rds_ibdev: %p, ipaddr: %x",
147 rds_ibdev, ipaddr);
148
149 rw_enter(&rds_ibdev->rwlock, RW_WRITER);
150 RDSV3_FOR_EACH_LIST_NODE_SAFE(i_ipaddr, next, &rds_ibdev->ipaddr_list,
151 list) {
152 if (i_ipaddr->ipaddr == ipaddr) {
153 list_remove_node(&i_ipaddr->list);
154 to_free = i_ipaddr;
155 break;
156 }
157 }
158 rw_exit(&rds_ibdev->rwlock);
159
160 if (to_free) {
161 kmem_free(i_ipaddr, sizeof (*i_ipaddr));
162 }
163
164 RDSV3_DPRINTF4("rdsv3_ib_remove_ipaddr",
165 "Return: rds_ibdev: %p, ipaddr: %x", rds_ibdev, ipaddr);
166 }
167
168 int
rdsv3_ib_update_ipaddr(struct rdsv3_ib_device * rds_ibdev,uint32_be_t ipaddr)169 rdsv3_ib_update_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
170 {
171 struct rdsv3_ib_device *rds_ibdev_old;
172
173 RDSV3_DPRINTF4("rdsv3_ib_update_ipaddr", "rds_ibdev: %p, ipaddr: %x",
174 rds_ibdev, ipaddr);
175
176 rds_ibdev_old = rdsv3_ib_get_device(ipaddr);
177 if (rds_ibdev_old)
178 rdsv3_ib_remove_ipaddr(rds_ibdev_old, ipaddr);
179
180 return (rdsv3_ib_add_ipaddr(rds_ibdev, ipaddr));
181 }
182
183 void
rdsv3_ib_add_conn(struct rdsv3_ib_device * rds_ibdev,struct rdsv3_connection * conn)184 rdsv3_ib_add_conn(struct rdsv3_ib_device *rds_ibdev,
185 struct rdsv3_connection *conn)
186 {
187 struct rdsv3_ib_connection *ic = conn->c_transport_data;
188
189 RDSV3_DPRINTF4("rdsv3_ib_add_conn", "rds_ibdev: %p, conn: %p",
190 rds_ibdev, conn);
191
192 /* conn was previously on the nodev_conns_list */
193 mutex_enter(&ib_nodev_conns_lock);
194 ASSERT(!list_is_empty(&ib_nodev_conns));
195 ASSERT(list_link_active(&ic->ib_node));
196 list_remove_node(&ic->ib_node);
197
198 mutex_enter(&rds_ibdev->spinlock);
199 list_insert_tail(&rds_ibdev->conn_list, ic);
200 ic->i_on_dev_list = B_TRUE;
201 mutex_exit(&rds_ibdev->spinlock);
202 mutex_exit(&ib_nodev_conns_lock);
203 }
204
205 void
rdsv3_ib_remove_conn(struct rdsv3_ib_device * rds_ibdev,struct rdsv3_connection * conn)206 rdsv3_ib_remove_conn(struct rdsv3_ib_device *rds_ibdev,
207 struct rdsv3_connection *conn)
208 {
209 struct rdsv3_ib_connection *ic = conn->c_transport_data;
210
211 RDSV3_DPRINTF4("rdsv3_ib_remove_conn", "rds_ibdev: %p, conn: %p",
212 rds_ibdev, conn);
213
214 /* place conn on nodev_conns_list */
215 mutex_enter(&ib_nodev_conns_lock);
216
217 mutex_enter(&rds_ibdev->spinlock);
218 ASSERT(list_link_active(&ic->ib_node));
219 list_remove_node(&ic->ib_node);
220 ic->i_on_dev_list = B_FALSE;
221 mutex_exit(&rds_ibdev->spinlock);
222
223 list_insert_tail(&ib_nodev_conns, ic);
224
225 mutex_exit(&ib_nodev_conns_lock);
226
227 RDSV3_DPRINTF4("rdsv3_ib_remove_conn",
228 "Return: rds_ibdev: %p, conn: %p", rds_ibdev, conn);
229 }
230
231 void
__rdsv3_ib_destroy_conns(struct list * list,kmutex_t * list_lock)232 __rdsv3_ib_destroy_conns(struct list *list, kmutex_t *list_lock)
233 {
234 struct rdsv3_ib_connection *ic, *_ic;
235 list_t tmp_list;
236
237 RDSV3_DPRINTF4("__rdsv3_ib_destroy_conns", "Enter: list: %p", list);
238
239 /* avoid calling conn_destroy with irqs off */
240 mutex_enter(list_lock);
241 list_splice(list, &tmp_list);
242 mutex_exit(list_lock);
243
244 RDSV3_FOR_EACH_LIST_NODE_SAFE(ic, _ic, &tmp_list, ib_node) {
245 rdsv3_conn_destroy(ic->conn);
246 }
247
248 RDSV3_DPRINTF4("__rdsv3_ib_destroy_conns", "Return: list: %p", list);
249 }
250
251 void
rdsv3_ib_destroy_mr_pool(struct rdsv3_ib_device * rds_ibdev)252 rdsv3_ib_destroy_mr_pool(struct rdsv3_ib_device *rds_ibdev)
253 {
254 struct rdsv3_fmr_pool *pool = rds_ibdev->fmr_pool;
255
256 RDSV3_DPRINTF4("rdsv3_ib_destroy_mr_pool", "Enter: ibdev: %p",
257 rds_ibdev);
258
259 if (rds_ibdev->fmr_pool_hdl == NULL)
260 return;
261
262 if (pool) {
263 list_destroy(&pool->f_list);
264 kmem_free((void *) pool, sizeof (*pool));
265 }
266
267 (void) rdsv3_ib_flush_mr_pool(rds_ibdev, rds_ibdev->fmr_pool_hdl, 1);
268 (void) ibt_destroy_fmr_pool(ib_get_ibt_hca_hdl(rds_ibdev->dev),
269 rds_ibdev->fmr_pool_hdl);
270 }
271
272 #define IB_FMR_MAX_BUF_SIZE 0x1000000 /* 16MB max buf */
273 int
rdsv3_ib_create_mr_pool(struct rdsv3_ib_device * rds_ibdev)274 rdsv3_ib_create_mr_pool(struct rdsv3_ib_device *rds_ibdev)
275 {
276 uint_t h_page_sz;
277 ibt_fmr_pool_attr_t fmr_attr;
278 ibt_status_t ibt_status;
279 struct rdsv3_fmr_pool *pool;
280
281 RDSV3_DPRINTF4("rdsv3_ib_create_mr_pool",
282 "Enter: ibdev: %p", rds_ibdev);
283
284 pool = (struct rdsv3_fmr_pool *)kmem_zalloc(sizeof (*pool), KM_NOSLEEP);
285 if (pool == NULL) {
286 return (-ENOMEM);
287 }
288
289 /* setup FMR pool attributes */
290 h_page_sz = rds_ibdev->hca_attr.hca_page_sz * 1024;
291
292 fmr_attr.fmr_max_pages_per_fmr = (IB_FMR_MAX_BUF_SIZE / h_page_sz) + 2;
293 fmr_attr.fmr_pool_size = RDSV3_FMR_POOL_SIZE;
294 fmr_attr.fmr_dirty_watermark = 128;
295 fmr_attr.fmr_cache = B_FALSE;
296 fmr_attr.fmr_flags = IBT_MR_NOSLEEP | IBT_MR_ENABLE_LOCAL_WRITE |
297 IBT_MR_ENABLE_REMOTE_WRITE | IBT_MR_ENABLE_REMOTE_READ;
298 fmr_attr.fmr_page_sz = h_page_sz;
299 fmr_attr.fmr_func_hdlr = NULL;
300 fmr_attr.fmr_func_arg = (void *) NULL;
301
302 /* create the FMR pool */
303 ibt_status = ibt_create_fmr_pool(rds_ibdev->ibt_hca_hdl,
304 rds_ibdev->pd->ibt_pd, &fmr_attr, &rds_ibdev->fmr_pool_hdl);
305 if (ibt_status != IBT_SUCCESS) {
306 kmem_free((void *) pool, sizeof (*pool));
307 rds_ibdev->fmr_pool = NULL;
308 return (-ENOMEM);
309 }
310
311 list_create(&pool->f_list, sizeof (struct rdsv3_ib_mr),
312 offsetof(struct rdsv3_ib_mr, m_obj));
313 mutex_init(&pool->f_lock, NULL, MUTEX_DRIVER, NULL);
314 rds_ibdev->fmr_pool = pool;
315 rds_ibdev->max_fmrs = fmr_attr.fmr_pool_size;
316 rds_ibdev->fmr_message_size = fmr_attr.fmr_max_pages_per_fmr;
317
318 RDSV3_DPRINTF2("rdsv3_ib_create_mr_pool",
319 "Exit: ibdev: %p fmr_pool: %p", rds_ibdev, pool);
320 return (0);
321 }
322
323 void
rdsv3_ib_get_mr_info(struct rdsv3_ib_device * rds_ibdev,struct rds_info_rdma_connection * iinfo)324 rdsv3_ib_get_mr_info(struct rdsv3_ib_device *rds_ibdev,
325 struct rds_info_rdma_connection *iinfo)
326 {
327 iinfo->rdma_mr_max = rds_ibdev->max_fmrs;
328 iinfo->rdma_mr_size = rds_ibdev->fmr_message_size;
329 }
330
331 void *
rdsv3_ib_get_mr(struct rds_iovec * args,unsigned long nents,struct rdsv3_sock * rs,uint32_t * key_ret)332 rdsv3_ib_get_mr(struct rds_iovec *args, unsigned long nents,
333 struct rdsv3_sock *rs, uint32_t *key_ret)
334 {
335 struct rdsv3_ib_device *rds_ibdev;
336 struct rdsv3_ib_mr *ibmr = NULL;
337 ddi_umem_cookie_t umem_cookie;
338 size_t umem_len;
339 caddr_t umem_addr;
340 int ret;
341 struct buf *bp;
342
343 RDSV3_DPRINTF4("rdsv3_ib_get_mr", "Enter: args.addr: %p", args->addr);
344
345 rds_ibdev = rdsv3_ib_get_device(rs->rs_bound_addr);
346
347 if (rds_ibdev == NULL)
348 return (void *)(PTR_ERR(-EFAULT));
349
350 ibmr = rdsv3_ib_alloc_fmr(rds_ibdev);
351 if (IS_ERR(ibmr))
352 return (ibmr);
353
354 /* pin user memory pages */
355 umem_len = ptob(btopr(args->bytes +
356 ((uintptr_t)args->addr & PAGEOFFSET)));
357 umem_addr = (caddr_t)((uintptr_t)args->addr & ~PAGEOFFSET);
358 ret = umem_lockmemory(umem_addr, umem_len,
359 DDI_UMEMLOCK_WRITE | DDI_UMEMLOCK_READ,
360 &umem_cookie, NULL, NULL);
361 if (ret != 0) {
362 kmem_free((void *) ibmr, sizeof (*ibmr));
363 ibmr = ERR_PTR(-ret);
364 return (ibmr);
365 }
366
367 /* transpose umem_cookie to buf structure for rdsv3_ib_map_fmr() */
368 bp = ddi_umem_iosetup(umem_cookie, 0, umem_len,
369 B_WRITE, 0, 0, NULL, DDI_UMEM_SLEEP);
370
371 ret = rdsv3_ib_map_fmr(rds_ibdev, ibmr, bp, nents);
372 freerbuf(bp); /* free bp */
373 if (ret == 0) {
374 ibmr->umem_cookie = umem_cookie;
375 *key_ret = (uint32_t)ibmr->rc_mem_desc.pmd_rkey;
376 ibmr->m_device = rds_ibdev;
377 ibmr->m_pool = rds_ibdev->fmr_pool;
378 RDSV3_DPRINTF4("rdsv3_ib_get_mr",
379 "Return: ibmr: %p umem_cookie %p", ibmr, ibmr->umem_cookie);
380 return (ibmr);
381 } else { /* error return */
382 RDSV3_DPRINTF2("rdsv3_ib_get_mr", "map_fmr failed (errno=%d)\n",
383 ret);
384 ddi_umem_unlock(umem_cookie);
385 kmem_free((void *)ibmr, sizeof (*ibmr));
386 return (ERR_PTR(ret));
387 }
388 }
389
390 static struct rdsv3_ib_mr *
rdsv3_ib_alloc_fmr(struct rdsv3_ib_device * rds_ibdev)391 rdsv3_ib_alloc_fmr(struct rdsv3_ib_device *rds_ibdev)
392 {
393 struct rdsv3_ib_mr *ibmr;
394
395 RDSV3_DPRINTF4("rdsv3_ib_alloc_fmr", "Enter: ibdev: %p", rds_ibdev);
396
397 if (rds_ibdev->fmr_pool_hdl) {
398 ibmr = (struct rdsv3_ib_mr *)kmem_zalloc(sizeof (*ibmr),
399 KM_SLEEP);
400 ibmr->rc_hca_hdl = ib_get_ibt_hca_hdl(rds_ibdev->dev);
401 ibmr->fmr_pool_hdl = rds_ibdev->fmr_pool_hdl;
402 return (ibmr);
403 }
404 return (struct rdsv3_ib_mr *)(PTR_ERR(-ENOMEM));
405 }
406
407 static int
rdsv3_ib_map_fmr(struct rdsv3_ib_device * rds_ibdev,struct rdsv3_ib_mr * ibmr,struct buf * bp,unsigned int nents)408 rdsv3_ib_map_fmr(struct rdsv3_ib_device *rds_ibdev, struct rdsv3_ib_mr *ibmr,
409 struct buf *bp, unsigned int nents)
410 {
411 ibt_va_attr_t va_attr;
412 ibt_reg_req_t reg_req;
413 uint_t paddr_list_len;
414 uint_t page_sz;
415 ibt_status_t ibt_status;
416 /* LINTED E_FUNC_SET_NOT_USED */
417 unsigned int l_nents = nents;
418
419 RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "Enter: ibmr: %p", ibmr);
420 RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "buf addr: %p", bp->b_un.b_addr);
421
422 /* setup ibt_map_mem_area attributes */
423 bzero(&va_attr, sizeof (ibt_va_attr_t));
424 va_attr.va_buf = bp;
425 va_attr.va_flags = IBT_VA_FMR | IBT_VA_BUF;
426
427 page_sz = rds_ibdev->hca_attr.hca_page_sz * 1024; /* in kbytes */
428 paddr_list_len = (bp->b_bcount / page_sz) + 2; /* start + end pg */
429
430 /* map user buffer to HCA address */
431 ibt_status = ibt_map_mem_area(ibmr->rc_hca_hdl,
432 &va_attr, paddr_list_len, ®_req, &ibmr->rc_ma_hdl);
433 if (ibt_status != IBT_SUCCESS) {
434 return (-ENOMEM);
435 }
436
437 /* use a free entry from FMR pool to register the specified memory */
438 ibt_status = ibt_register_physical_fmr(ibmr->rc_hca_hdl,
439 ibmr->fmr_pool_hdl,
440 ®_req.fn_arg, &ibmr->rc_fmr_hdl, &ibmr->rc_mem_desc);
441 if (ibt_status != IBT_SUCCESS) {
442 RDSV3_DPRINTF2("rdsv3_ib_map_fmr", "reg_phy_fmr failed %d",
443 ibt_status);
444 (void) ibt_unmap_mem_area(ibmr->rc_hca_hdl,
445 ibmr->rc_ma_hdl);
446 if (ibt_status == IBT_INSUFF_RESOURCE) {
447 return (-ENOBUFS);
448 }
449 return (-EINVAL);
450 }
451 RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "Return: ibmr: %p rkey: 0x%x",
452 ibmr, (uint32_t)ibmr->rc_mem_desc.pmd_rkey);
453 return (0);
454 }
455
456 void
rdsv3_ib_sync_mr(void * trans_private,int direction)457 rdsv3_ib_sync_mr(void *trans_private, int direction)
458 {
459 /* LINTED E_FUNC_SET_NOT_USED */
460 void *l_trans_private = trans_private;
461 /* LINTED E_FUNC_SET_NOT_USED */
462 int l_direction = direction;
463
464 /* FMR Sync not needed in Solaris on PCI-ex systems */
465
466 RDSV3_DPRINTF4("rdsv3_ib_sync_mr", "Enter:");
467 }
468
469 void
rdsv3_ib_flush_mrs(void)470 rdsv3_ib_flush_mrs(void)
471 {
472 struct rdsv3_ib_device *rds_ibdev;
473
474 RDSV3_DPRINTF4("rdsv3_ib_flush_mrs", "Enter:");
475
476 RDSV3_FOR_EACH_LIST_NODE(rds_ibdev, &rdsv3_ib_devices, list) {
477 if (rds_ibdev->fmr_pool_hdl) {
478 (void) rdsv3_ib_flush_mr_pool(rds_ibdev,
479 rds_ibdev->fmr_pool_hdl, 0);
480 }
481 }
482 }
483
484 static void
rdsv3_ib_drop_mr(struct rdsv3_ib_mr * ibmr)485 rdsv3_ib_drop_mr(struct rdsv3_ib_mr *ibmr)
486 {
487 /* return the fmr to the IBTF pool */
488 (void) ibt_deregister_fmr(ibmr->rc_hca_hdl, ibmr->rc_fmr_hdl);
489 (void) ibt_unmap_mem_area(ibmr->rc_hca_hdl, ibmr->rc_ma_hdl);
490 (void) ddi_umem_unlock(ibmr->umem_cookie);
491 kmem_free((void *) ibmr, sizeof (*ibmr));
492 }
493
494 void
rdsv3_ib_drain_mrlist_fn(void * data)495 rdsv3_ib_drain_mrlist_fn(void *data)
496 {
497 struct rdsv3_fmr_pool *pool = (struct rdsv3_fmr_pool *)data;
498 ibt_hca_hdl_t hca_hdl;
499 ibt_fmr_pool_hdl_t fmr_pool_hdl;
500 unsigned int inval;
501 struct rdsv3_ib_mr *ibmr;
502 list_t *listp = &pool->f_list;
503 kmutex_t *lockp = &pool->f_lock;
504 int i;
505
506 inval = 0;
507 i = 0;
508 for (;;) {
509 mutex_enter(lockp);
510 ibmr = (struct rdsv3_ib_mr *)list_remove_head(listp);
511 if (ibmr)
512 pool->f_listcnt--;
513 mutex_exit(lockp);
514 if (!ibmr)
515 break;
516 if ((inval == 0) && ibmr->m_inval) {
517 inval = 1;
518 hca_hdl = ibmr->rc_hca_hdl;
519 fmr_pool_hdl = ibmr->fmr_pool_hdl;
520 }
521 i++;
522 rdsv3_ib_drop_mr(ibmr);
523 }
524 if (inval)
525 (void) ibt_flush_fmr_pool(hca_hdl, fmr_pool_hdl);
526 }
527
528 void
rdsv3_ib_free_mr(void * trans_private,int invalidate)529 rdsv3_ib_free_mr(void *trans_private, int invalidate)
530 {
531 struct rdsv3_ib_mr *ibmr = trans_private;
532 rdsv3_af_thr_t *af_thr;
533
534 RDSV3_DPRINTF4("rdsv3_ib_free_mr", "Enter: ibmr: %p inv: %d",
535 ibmr, invalidate);
536
537 /* save af_thr at local as ibmr might be freed at mutex_exit */
538 af_thr = ibmr->m_device->fmr_soft_cq;
539 ibmr->m_inval = (unsigned int) invalidate;
540 mutex_enter(&ibmr->m_pool->f_lock);
541 list_insert_tail(&ibmr->m_pool->f_list, ibmr);
542 ibmr->m_pool->f_listcnt++;
543 mutex_exit(&ibmr->m_pool->f_lock);
544
545 rdsv3_af_thr_fire(af_thr);
546 }
547
548 static int
rdsv3_ib_flush_mr_pool(struct rdsv3_ib_device * rds_ibdev,ibt_fmr_pool_hdl_t pool_hdl,int free_all)549 rdsv3_ib_flush_mr_pool(struct rdsv3_ib_device *rds_ibdev,
550 ibt_fmr_pool_hdl_t pool_hdl, int free_all)
551 {
552 /* LINTED E_FUNC_SET_NOT_USED */
553 int l_free_all = free_all;
554
555 RDSV3_DPRINTF4("rdsv3_ib_flush_mr_pool", "Enter: pool: %p", pool_hdl);
556
557 rdsv3_ib_stats_inc(s_ib_rdma_mr_pool_flush);
558
559 (void) ibt_flush_fmr_pool(ib_get_ibt_hca_hdl(rds_ibdev->dev),
560 pool_hdl);
561 return (0);
562 }
563