1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2016 HGST, a Western Digital Company.
5 #include <linux/moduleparam.h>
6 #include <linux/slab.h>
7 #include <linux/pci-p2pdma.h>
8 #include <rdma/mr_pool.h>
18 static bool rdma_rw_force_mr;
19 module_param_named(force_mr, rdma_rw_force_mr, bool, 0);
20 MODULE_PARM_DESC(force_mr, "Force usage of MRs for RDMA READ/WRITE operations");
23 * Report whether memory registration should be used. Memory registration must
24 * be used for iWarp devices because of iWARP-specific limitations. Memory
25 * registration is also enabled if registering memory might yield better
26 * performance than using multiple SGE entries, see rdma_rw_io_needs_mr()
28 static inline bool rdma_rw_can_use_mr(struct ib_device *dev, u8 port_num)
30 if (rdma_protocol_iwarp(dev, port_num))
32 if (dev->attrs.max_sgl_rd)
34 if (unlikely(rdma_rw_force_mr))
40 * Check if the device will use memory registration for this RW operation.
41 * For RDMA READs we must use MRs on iWarp and can optionally use them as an
42 * optimization otherwise. Additionally we have a debug option to force usage
43 * of MRs to help testing this code path.
45 static inline bool rdma_rw_io_needs_mr(struct ib_device *dev, u8 port_num,
46 enum dma_data_direction dir, int dma_nents)
48 if (dir == DMA_FROM_DEVICE) {
49 if (rdma_protocol_iwarp(dev, port_num))
51 if (dev->attrs.max_sgl_rd && dma_nents > dev->attrs.max_sgl_rd)
54 if (unlikely(rdma_rw_force_mr))
59 static inline u32 rdma_rw_fr_page_list_len(struct ib_device *dev,
65 max_pages = dev->attrs.max_pi_fast_reg_page_list_len;
67 max_pages = dev->attrs.max_fast_reg_page_list_len;
69 /* arbitrary limit to avoid allocating gigantic resources */
70 return min_t(u32, max_pages, 256);
73 static inline int rdma_rw_inv_key(struct rdma_rw_reg_ctx *reg)
77 if (reg->mr->need_inval) {
78 reg->inv_wr.opcode = IB_WR_LOCAL_INV;
79 reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey;
80 reg->inv_wr.next = ®->reg_wr.wr;
83 reg->inv_wr.next = NULL;
89 /* Caller must have zero-initialized *reg. */
90 static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num,
91 struct rdma_rw_reg_ctx *reg, struct scatterlist *sg,
92 u32 sg_cnt, u32 offset)
94 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
96 u32 nents = min(sg_cnt, pages_per_mr);
99 reg->mr = ib_mr_pool_get(qp, &qp->rdma_mrs);
103 count += rdma_rw_inv_key(reg);
105 ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE);
106 if (ret < 0 || ret < nents) {
107 ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr);
111 reg->reg_wr.wr.opcode = IB_WR_REG_MR;
112 reg->reg_wr.mr = reg->mr;
113 reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE;
114 if (rdma_protocol_iwarp(qp->device, port_num))
115 reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE;
118 reg->sge.addr = reg->mr->iova;
119 reg->sge.length = reg->mr->length;
123 static int rdma_rw_init_mr_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
124 u8 port_num, struct scatterlist *sg, u32 sg_cnt, u32 offset,
125 u64 remote_addr, u32 rkey, enum dma_data_direction dir)
127 struct rdma_rw_reg_ctx *prev = NULL;
128 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
130 int i, j, ret = 0, count = 0;
132 ctx->nr_ops = (sg_cnt + pages_per_mr - 1) / pages_per_mr;
133 ctx->reg = kcalloc(ctx->nr_ops, sizeof(*ctx->reg), GFP_KERNEL);
139 for (i = 0; i < ctx->nr_ops; i++) {
140 struct rdma_rw_reg_ctx *reg = &ctx->reg[i];
141 u32 nents = min(sg_cnt, pages_per_mr);
143 ret = rdma_rw_init_one_mr(qp, port_num, reg, sg, sg_cnt,
150 if (reg->mr->need_inval)
151 prev->wr.wr.next = ®->inv_wr;
153 prev->wr.wr.next = ®->reg_wr.wr;
156 reg->reg_wr.wr.next = ®->wr.wr;
158 reg->wr.wr.sg_list = ®->sge;
159 reg->wr.wr.num_sge = 1;
160 reg->wr.remote_addr = remote_addr;
162 if (dir == DMA_TO_DEVICE) {
163 reg->wr.wr.opcode = IB_WR_RDMA_WRITE;
164 } else if (!rdma_cap_read_inv(qp->device, port_num)) {
165 reg->wr.wr.opcode = IB_WR_RDMA_READ;
167 reg->wr.wr.opcode = IB_WR_RDMA_READ_WITH_INV;
168 reg->wr.wr.ex.invalidate_rkey = reg->mr->lkey;
172 remote_addr += reg->sge.length;
174 for (j = 0; j < nents; j++)
181 prev->wr.wr.next = NULL;
183 ctx->type = RDMA_RW_MR;
188 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr);
194 static int rdma_rw_init_map_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
195 struct scatterlist *sg, u32 sg_cnt, u32 offset,
196 u64 remote_addr, u32 rkey, enum dma_data_direction dir)
198 u32 max_sge = dir == DMA_TO_DEVICE ? qp->max_write_sge :
201 u32 total_len = 0, i, j;
203 ctx->nr_ops = DIV_ROUND_UP(sg_cnt, max_sge);
205 ctx->map.sges = sge = kcalloc(sg_cnt, sizeof(*sge), GFP_KERNEL);
209 ctx->map.wrs = kcalloc(ctx->nr_ops, sizeof(*ctx->map.wrs), GFP_KERNEL);
213 for (i = 0; i < ctx->nr_ops; i++) {
214 struct ib_rdma_wr *rdma_wr = &ctx->map.wrs[i];
215 u32 nr_sge = min(sg_cnt, max_sge);
217 if (dir == DMA_TO_DEVICE)
218 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE;
220 rdma_wr->wr.opcode = IB_WR_RDMA_READ;
221 rdma_wr->remote_addr = remote_addr + total_len;
222 rdma_wr->rkey = rkey;
223 rdma_wr->wr.num_sge = nr_sge;
224 rdma_wr->wr.sg_list = sge;
226 for (j = 0; j < nr_sge; j++, sg = sg_next(sg)) {
227 sge->addr = sg_dma_address(sg) + offset;
228 sge->length = sg_dma_len(sg) - offset;
229 sge->lkey = qp->pd->local_dma_lkey;
231 total_len += sge->length;
237 rdma_wr->wr.next = i + 1 < ctx->nr_ops ?
238 &ctx->map.wrs[i + 1].wr : NULL;
241 ctx->type = RDMA_RW_MULTI_WR;
245 kfree(ctx->map.sges);
250 static int rdma_rw_init_single_wr(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
251 struct scatterlist *sg, u32 offset, u64 remote_addr, u32 rkey,
252 enum dma_data_direction dir)
254 struct ib_rdma_wr *rdma_wr = &ctx->single.wr;
258 ctx->single.sge.lkey = qp->pd->local_dma_lkey;
259 ctx->single.sge.addr = sg_dma_address(sg) + offset;
260 ctx->single.sge.length = sg_dma_len(sg) - offset;
262 memset(rdma_wr, 0, sizeof(*rdma_wr));
263 if (dir == DMA_TO_DEVICE)
264 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE;
266 rdma_wr->wr.opcode = IB_WR_RDMA_READ;
267 rdma_wr->wr.sg_list = &ctx->single.sge;
268 rdma_wr->wr.num_sge = 1;
269 rdma_wr->remote_addr = remote_addr;
270 rdma_wr->rkey = rkey;
272 ctx->type = RDMA_RW_SINGLE_WR;
277 * rdma_rw_ctx_init - initialize a RDMA READ/WRITE context
278 * @ctx: context to initialize
279 * @qp: queue pair to operate on
280 * @port_num: port num to which the connection is bound
281 * @sg: scatterlist to READ/WRITE from/to
282 * @sg_cnt: number of entries in @sg
283 * @sg_offset: current byte offset into @sg
284 * @remote_addr:remote address to read/write (relative to @rkey)
285 * @rkey: remote key to operate on
286 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
288 * Returns the number of WQEs that will be needed on the workqueue if
289 * successful, or a negative error code.
291 int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
292 struct scatterlist *sg, u32 sg_cnt, u32 sg_offset,
293 u64 remote_addr, u32 rkey, enum dma_data_direction dir)
295 struct ib_device *dev = qp->pd->device;
298 if (is_pci_p2pdma_page(sg_page(sg)))
299 ret = pci_p2pdma_map_sg(dev->dma_device, sg, sg_cnt, dir);
301 ret = ib_dma_map_sg(dev, sg, sg_cnt, dir);
308 * Skip to the S/G entry that sg_offset falls into:
311 u32 len = sg_dma_len(sg);
322 if (WARN_ON_ONCE(sg_cnt == 0))
325 if (rdma_rw_io_needs_mr(qp->device, port_num, dir, sg_cnt)) {
326 ret = rdma_rw_init_mr_wrs(ctx, qp, port_num, sg, sg_cnt,
327 sg_offset, remote_addr, rkey, dir);
328 } else if (sg_cnt > 1) {
329 ret = rdma_rw_init_map_wrs(ctx, qp, sg, sg_cnt, sg_offset,
330 remote_addr, rkey, dir);
332 ret = rdma_rw_init_single_wr(ctx, qp, sg, sg_offset,
333 remote_addr, rkey, dir);
341 ib_dma_unmap_sg(dev, sg, sg_cnt, dir);
344 EXPORT_SYMBOL(rdma_rw_ctx_init);
347 * rdma_rw_ctx_signature_init - initialize a RW context with signature offload
348 * @ctx: context to initialize
349 * @qp: queue pair to operate on
350 * @port_num: port num to which the connection is bound
351 * @sg: scatterlist to READ/WRITE from/to
352 * @sg_cnt: number of entries in @sg
353 * @prot_sg: scatterlist to READ/WRITE protection information from/to
354 * @prot_sg_cnt: number of entries in @prot_sg
355 * @sig_attrs: signature offloading algorithms
356 * @remote_addr:remote address to read/write (relative to @rkey)
357 * @rkey: remote key to operate on
358 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
360 * Returns the number of WQEs that will be needed on the workqueue if
361 * successful, or a negative error code.
363 int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
364 u8 port_num, struct scatterlist *sg, u32 sg_cnt,
365 struct scatterlist *prot_sg, u32 prot_sg_cnt,
366 struct ib_sig_attrs *sig_attrs,
367 u64 remote_addr, u32 rkey, enum dma_data_direction dir)
369 struct ib_device *dev = qp->pd->device;
370 u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
372 struct ib_rdma_wr *rdma_wr;
375 if (sg_cnt > pages_per_mr || prot_sg_cnt > pages_per_mr) {
376 pr_err("SG count too large: sg_cnt=%d, prot_sg_cnt=%d, pages_per_mr=%d\n",
377 sg_cnt, prot_sg_cnt, pages_per_mr);
381 ret = ib_dma_map_sg(dev, sg, sg_cnt, dir);
387 ret = ib_dma_map_sg(dev, prot_sg, prot_sg_cnt, dir);
395 ctx->type = RDMA_RW_SIG_MR;
397 ctx->reg = kcalloc(1, sizeof(*ctx->reg), GFP_KERNEL);
400 goto out_unmap_prot_sg;
403 ctx->reg->mr = ib_mr_pool_get(qp, &qp->sig_mrs);
409 count += rdma_rw_inv_key(ctx->reg);
411 memcpy(ctx->reg->mr->sig_attrs, sig_attrs, sizeof(struct ib_sig_attrs));
413 ret = ib_map_mr_sg_pi(ctx->reg->mr, sg, sg_cnt, NULL, prot_sg,
414 prot_sg_cnt, NULL, SZ_4K);
416 pr_err("failed to map PI sg (%d)\n", sg_cnt + prot_sg_cnt);
417 goto out_destroy_sig_mr;
420 ctx->reg->reg_wr.wr.opcode = IB_WR_REG_MR_INTEGRITY;
421 ctx->reg->reg_wr.wr.wr_cqe = NULL;
422 ctx->reg->reg_wr.wr.num_sge = 0;
423 ctx->reg->reg_wr.wr.send_flags = 0;
424 ctx->reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE;
425 if (rdma_protocol_iwarp(qp->device, port_num))
426 ctx->reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE;
427 ctx->reg->reg_wr.mr = ctx->reg->mr;
428 ctx->reg->reg_wr.key = ctx->reg->mr->lkey;
431 ctx->reg->sge.addr = ctx->reg->mr->iova;
432 ctx->reg->sge.length = ctx->reg->mr->length;
433 if (sig_attrs->wire.sig_type == IB_SIG_TYPE_NONE)
434 ctx->reg->sge.length -= ctx->reg->mr->sig_attrs->meta_length;
436 rdma_wr = &ctx->reg->wr;
437 rdma_wr->wr.sg_list = &ctx->reg->sge;
438 rdma_wr->wr.num_sge = 1;
439 rdma_wr->remote_addr = remote_addr;
440 rdma_wr->rkey = rkey;
441 if (dir == DMA_TO_DEVICE)
442 rdma_wr->wr.opcode = IB_WR_RDMA_WRITE;
444 rdma_wr->wr.opcode = IB_WR_RDMA_READ;
445 ctx->reg->reg_wr.wr.next = &rdma_wr->wr;
451 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr);
456 ib_dma_unmap_sg(dev, prot_sg, prot_sg_cnt, dir);
458 ib_dma_unmap_sg(dev, sg, sg_cnt, dir);
461 EXPORT_SYMBOL(rdma_rw_ctx_signature_init);
464 * Now that we are going to post the WRs we can update the lkey and need_inval
465 * state on the MRs. If we were doing this at init time, we would get double
466 * or missing invalidations if a context was initialized but not actually
469 static void rdma_rw_update_lkey(struct rdma_rw_reg_ctx *reg, bool need_inval)
471 reg->mr->need_inval = need_inval;
472 ib_update_fast_reg_key(reg->mr, ib_inc_rkey(reg->mr->lkey));
473 reg->reg_wr.key = reg->mr->lkey;
474 reg->sge.lkey = reg->mr->lkey;
478 * rdma_rw_ctx_wrs - return chain of WRs for a RDMA READ or WRITE operation
479 * @ctx: context to operate on
480 * @qp: queue pair to operate on
481 * @port_num: port num to which the connection is bound
482 * @cqe: completion queue entry for the last WR
483 * @chain_wr: WR to append to the posted chain
485 * Return the WR chain for the set of RDMA READ/WRITE operations described by
486 * @ctx, as well as any memory registration operations needed. If @chain_wr
487 * is non-NULL the WR it points to will be appended to the chain of WRs posted.
488 * If @chain_wr is not set @cqe must be set so that the caller gets a
489 * completion notification.
491 struct ib_send_wr *rdma_rw_ctx_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
492 u8 port_num, struct ib_cqe *cqe, struct ib_send_wr *chain_wr)
494 struct ib_send_wr *first_wr, *last_wr;
501 for (i = 0; i < ctx->nr_ops; i++) {
502 rdma_rw_update_lkey(&ctx->reg[i],
503 ctx->reg[i].wr.wr.opcode !=
504 IB_WR_RDMA_READ_WITH_INV);
507 if (ctx->reg[0].inv_wr.next)
508 first_wr = &ctx->reg[0].inv_wr;
510 first_wr = &ctx->reg[0].reg_wr.wr;
511 last_wr = &ctx->reg[ctx->nr_ops - 1].wr.wr;
513 case RDMA_RW_MULTI_WR:
514 first_wr = &ctx->map.wrs[0].wr;
515 last_wr = &ctx->map.wrs[ctx->nr_ops - 1].wr;
517 case RDMA_RW_SINGLE_WR:
518 first_wr = &ctx->single.wr.wr;
519 last_wr = &ctx->single.wr.wr;
526 last_wr->next = chain_wr;
528 last_wr->wr_cqe = cqe;
529 last_wr->send_flags |= IB_SEND_SIGNALED;
534 EXPORT_SYMBOL(rdma_rw_ctx_wrs);
537 * rdma_rw_ctx_post - post a RDMA READ or RDMA WRITE operation
538 * @ctx: context to operate on
539 * @qp: queue pair to operate on
540 * @port_num: port num to which the connection is bound
541 * @cqe: completion queue entry for the last WR
542 * @chain_wr: WR to append to the posted chain
544 * Post the set of RDMA READ/WRITE operations described by @ctx, as well as
545 * any memory registration operations needed. If @chain_wr is non-NULL the
546 * WR it points to will be appended to the chain of WRs posted. If @chain_wr
547 * is not set @cqe must be set so that the caller gets a completion
550 int rdma_rw_ctx_post(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
551 struct ib_cqe *cqe, struct ib_send_wr *chain_wr)
553 struct ib_send_wr *first_wr;
555 first_wr = rdma_rw_ctx_wrs(ctx, qp, port_num, cqe, chain_wr);
556 return ib_post_send(qp, first_wr, NULL);
558 EXPORT_SYMBOL(rdma_rw_ctx_post);
561 * rdma_rw_ctx_destroy - release all resources allocated by rdma_rw_ctx_init
562 * @ctx: context to release
563 * @qp: queue pair to operate on
564 * @port_num: port num to which the connection is bound
565 * @sg: scatterlist that was used for the READ/WRITE
566 * @sg_cnt: number of entries in @sg
567 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
569 void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
570 struct scatterlist *sg, u32 sg_cnt, enum dma_data_direction dir)
576 for (i = 0; i < ctx->nr_ops; i++)
577 ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->reg[i].mr);
580 case RDMA_RW_MULTI_WR:
582 kfree(ctx->map.sges);
584 case RDMA_RW_SINGLE_WR:
591 if (is_pci_p2pdma_page(sg_page(sg)))
592 pci_p2pdma_unmap_sg(qp->pd->device->dma_device, sg,
595 ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
597 EXPORT_SYMBOL(rdma_rw_ctx_destroy);
600 * rdma_rw_ctx_destroy_signature - release all resources allocated by
601 * rdma_rw_ctx_signature_init
602 * @ctx: context to release
603 * @qp: queue pair to operate on
604 * @port_num: port num to which the connection is bound
605 * @sg: scatterlist that was used for the READ/WRITE
606 * @sg_cnt: number of entries in @sg
607 * @prot_sg: scatterlist that was used for the READ/WRITE of the PI
608 * @prot_sg_cnt: number of entries in @prot_sg
609 * @dir: %DMA_TO_DEVICE for RDMA WRITE, %DMA_FROM_DEVICE for RDMA READ
611 void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
612 u8 port_num, struct scatterlist *sg, u32 sg_cnt,
613 struct scatterlist *prot_sg, u32 prot_sg_cnt,
614 enum dma_data_direction dir)
616 if (WARN_ON_ONCE(ctx->type != RDMA_RW_SIG_MR))
619 ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr);
622 ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
624 ib_dma_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
626 EXPORT_SYMBOL(rdma_rw_ctx_destroy_signature);
629 * rdma_rw_mr_factor - return number of MRs required for a payload
630 * @device: device handling the connection
631 * @port_num: port num to which the connection is bound
632 * @maxpages: maximum payload pages per rdma_rw_ctx
634 * Returns the number of MRs the device requires to move @maxpayload
635 * bytes. The returned value is used during transport creation to
636 * compute max_rdma_ctxts and the size of the transport's Send and
637 * Send Completion Queues.
639 unsigned int rdma_rw_mr_factor(struct ib_device *device, u8 port_num,
640 unsigned int maxpages)
642 unsigned int mr_pages;
644 if (rdma_rw_can_use_mr(device, port_num))
645 mr_pages = rdma_rw_fr_page_list_len(device, false);
647 mr_pages = device->attrs.max_sge_rd;
648 return DIV_ROUND_UP(maxpages, mr_pages);
650 EXPORT_SYMBOL(rdma_rw_mr_factor);
652 void rdma_rw_init_qp(struct ib_device *dev, struct ib_qp_init_attr *attr)
656 WARN_ON_ONCE(attr->port_num == 0);
659 * Each context needs at least one RDMA READ or WRITE WR.
661 * For some hardware we might need more, eventually we should ask the
662 * HCA driver for a multiplier here.
667 * If the devices needs MRs to perform RDMA READ or WRITE operations,
668 * we'll need two additional MRs for the registrations and the
671 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN ||
672 rdma_rw_can_use_mr(dev, attr->port_num))
673 factor += 2; /* inv + reg */
675 attr->cap.max_send_wr += factor * attr->cap.max_rdma_ctxs;
678 * But maybe we were just too high in the sky and the device doesn't
679 * even support all we need, and we'll have to live with what we get..
681 attr->cap.max_send_wr =
682 min_t(u32, attr->cap.max_send_wr, dev->attrs.max_qp_wr);
685 int rdma_rw_init_mrs(struct ib_qp *qp, struct ib_qp_init_attr *attr)
687 struct ib_device *dev = qp->pd->device;
688 u32 nr_mrs = 0, nr_sig_mrs = 0, max_num_sg = 0;
691 if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) {
692 nr_sig_mrs = attr->cap.max_rdma_ctxs;
693 nr_mrs = attr->cap.max_rdma_ctxs;
694 max_num_sg = rdma_rw_fr_page_list_len(dev, true);
695 } else if (rdma_rw_can_use_mr(dev, attr->port_num)) {
696 nr_mrs = attr->cap.max_rdma_ctxs;
697 max_num_sg = rdma_rw_fr_page_list_len(dev, false);
701 ret = ib_mr_pool_init(qp, &qp->rdma_mrs, nr_mrs,
705 pr_err("%s: failed to allocated %d MRs\n",
712 ret = ib_mr_pool_init(qp, &qp->sig_mrs, nr_sig_mrs,
713 IB_MR_TYPE_INTEGRITY, max_num_sg, max_num_sg);
715 pr_err("%s: failed to allocated %d SIG MRs\n",
716 __func__, nr_sig_mrs);
717 goto out_free_rdma_mrs;
724 ib_mr_pool_destroy(qp, &qp->rdma_mrs);
728 void rdma_rw_cleanup_mrs(struct ib_qp *qp)
730 ib_mr_pool_destroy(qp, &qp->sig_mrs);
731 ib_mr_pool_destroy(qp, &qp->rdma_mrs);