2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/errno.h>
38 #include <rdma/ib_user_verbs.h>
39 #include <rdma/ib_addr.h>
41 #include "usnic_abi.h"
43 #include "usnic_common_util.h"
44 #include "usnic_ib_qp_grp.h"
45 #include "usnic_fwd.h"
46 #include "usnic_log.h"
47 #include "usnic_uiom.h"
48 #include "usnic_transport.h"
50 #define USNIC_DEFAULT_TRANSPORT USNIC_TRANSPORT_ROCE_CUSTOM
52 static void usnic_ib_fw_string_to_u64(char *fw_ver_str, u64 *fw_ver)
54 *fw_ver = *((u64 *)fw_ver_str);
57 static int usnic_ib_fill_create_qp_resp(struct usnic_ib_qp_grp *qp_grp,
58 struct ib_udata *udata)
60 struct usnic_ib_dev *us_ibdev;
61 struct usnic_ib_create_qp_resp resp;
63 struct vnic_dev_bar *bar;
64 struct usnic_vnic_res_chunk *chunk;
65 struct usnic_ib_qp_grp_flow *default_flow;
68 memset(&resp, 0, sizeof(resp));
70 us_ibdev = qp_grp->vf->pf;
71 pdev = usnic_vnic_get_pdev(qp_grp->vf->vnic);
73 usnic_err("Failed to get pdev of qp_grp %d\n",
78 bar = usnic_vnic_get_bar(qp_grp->vf->vnic, 0);
80 usnic_err("Failed to get bar0 of qp_grp %d vf %s",
81 qp_grp->grp_id, pci_name(pdev));
85 resp.vfid = usnic_vnic_get_index(qp_grp->vf->vnic);
86 resp.bar_bus_addr = bar->bus_addr;
87 resp.bar_len = bar->len;
89 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_RQ);
91 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
92 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_RQ),
95 return PTR_ERR(chunk);
98 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_RQ);
99 resp.rq_cnt = chunk->cnt;
100 for (i = 0; i < chunk->cnt; i++)
101 resp.rq_idx[i] = chunk->res[i]->vnic_idx;
103 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_WQ);
105 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
106 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_WQ),
109 return PTR_ERR(chunk);
112 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_WQ);
113 resp.wq_cnt = chunk->cnt;
114 for (i = 0; i < chunk->cnt; i++)
115 resp.wq_idx[i] = chunk->res[i]->vnic_idx;
117 chunk = usnic_ib_qp_grp_get_chunk(qp_grp, USNIC_VNIC_RES_TYPE_CQ);
119 usnic_err("Failed to get chunk %s for qp_grp %d with err %ld\n",
120 usnic_vnic_res_type_to_str(USNIC_VNIC_RES_TYPE_CQ),
123 return PTR_ERR(chunk);
126 WARN_ON(chunk->type != USNIC_VNIC_RES_TYPE_CQ);
127 resp.cq_cnt = chunk->cnt;
128 for (i = 0; i < chunk->cnt; i++)
129 resp.cq_idx[i] = chunk->res[i]->vnic_idx;
131 default_flow = list_first_entry(&qp_grp->flows_lst,
132 struct usnic_ib_qp_grp_flow, link);
133 resp.transport = default_flow->trans_type;
135 err = ib_copy_to_udata(udata, &resp, sizeof(resp));
137 usnic_err("Failed to copy udata for %s", us_ibdev->ib_dev.name);
144 static struct usnic_ib_qp_grp*
145 find_free_vf_and_create_qp_grp(struct usnic_ib_dev *us_ibdev,
146 struct usnic_ib_pd *pd,
147 struct usnic_transport_spec *trans_spec,
148 struct usnic_vnic_res_spec *res_spec)
150 struct usnic_ib_vf *vf;
151 struct usnic_vnic *vnic;
152 struct usnic_ib_qp_grp *qp_grp;
153 struct device *dev, **dev_list;
156 BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
158 if (list_empty(&us_ibdev->vf_dev_list)) {
159 usnic_info("No vfs to allocate\n");
163 if (usnic_ib_share_vf) {
164 /* Try to find resouces on a used vf which is in pd */
165 dev_list = usnic_uiom_get_dev_list(pd->umem_pd);
166 for (i = 0; dev_list[i]; i++) {
168 vf = pci_get_drvdata(to_pci_dev(dev));
169 spin_lock(&vf->lock);
171 if (!usnic_vnic_check_room(vnic, res_spec)) {
172 usnic_dbg("Found used vnic %s from %s\n",
173 us_ibdev->ib_dev.name,
174 pci_name(usnic_vnic_get_pdev(
179 spin_unlock(&vf->lock);
182 usnic_uiom_free_dev_list(dev_list);
186 /* Try to find resources on an unused vf */
187 list_for_each_entry(vf, &us_ibdev->vf_dev_list, link) {
188 spin_lock(&vf->lock);
190 if (vf->qp_grp_ref_cnt == 0 &&
191 usnic_vnic_check_room(vnic, res_spec) == 0) {
195 spin_unlock(&vf->lock);
200 usnic_info("No free qp grp found on %s\n",
201 us_ibdev->ib_dev.name);
202 return ERR_PTR(-ENOMEM);
205 qp_grp = usnic_ib_qp_grp_create(us_ibdev->ufdev, vf, pd, res_spec,
207 spin_unlock(&vf->lock);
208 if (IS_ERR_OR_NULL(qp_grp)) {
209 usnic_err("Failed to allocate qp_grp\n");
210 return ERR_PTR(qp_grp ? PTR_ERR(qp_grp) : -ENOMEM);
216 static void qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp)
218 struct usnic_ib_vf *vf = qp_grp->vf;
220 WARN_ON(qp_grp->state != IB_QPS_RESET);
222 spin_lock(&vf->lock);
223 usnic_ib_qp_grp_destroy(qp_grp);
224 spin_unlock(&vf->lock);
227 static void eth_speed_to_ib_speed(int speed, u8 *active_speed,
230 if (speed <= 10000) {
231 *active_width = IB_WIDTH_1X;
232 *active_speed = IB_SPEED_FDR10;
233 } else if (speed <= 20000) {
234 *active_width = IB_WIDTH_4X;
235 *active_speed = IB_SPEED_DDR;
236 } else if (speed <= 30000) {
237 *active_width = IB_WIDTH_4X;
238 *active_speed = IB_SPEED_QDR;
239 } else if (speed <= 40000) {
240 *active_width = IB_WIDTH_4X;
241 *active_speed = IB_SPEED_FDR10;
243 *active_width = IB_WIDTH_4X;
244 *active_speed = IB_SPEED_EDR;
248 static int create_qp_validate_user_data(struct usnic_ib_create_qp_cmd cmd)
250 if (cmd.spec.trans_type <= USNIC_TRANSPORT_UNKNOWN ||
251 cmd.spec.trans_type >= USNIC_TRANSPORT_MAX)
257 /* Start of ib callback functions */
259 enum rdma_link_layer usnic_ib_port_link_layer(struct ib_device *device,
262 return IB_LINK_LAYER_ETHERNET;
265 int usnic_ib_query_device(struct ib_device *ibdev,
266 struct ib_device_attr *props,
267 struct ib_udata *uhw)
269 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
271 struct ethtool_drvinfo info;
275 if (uhw->inlen || uhw->outlen)
278 mutex_lock(&us_ibdev->usdev_lock);
279 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
280 memset(props, 0, sizeof(*props));
281 usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr,
283 memcpy(&props->sys_image_guid, &gid.global.interface_id,
284 sizeof(gid.global.interface_id));
285 usnic_ib_fw_string_to_u64(&info.fw_version[0], &props->fw_ver);
286 props->max_mr_size = USNIC_UIOM_MAX_MR_SIZE;
287 props->page_size_cap = USNIC_UIOM_PAGE_SIZE;
288 props->vendor_id = PCI_VENDOR_ID_CISCO;
289 props->vendor_part_id = PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC;
290 props->hw_ver = us_ibdev->pdev->subsystem_device;
291 qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
292 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
293 props->max_qp = qp_per_vf *
294 atomic_read(&us_ibdev->vf_cnt.refcount);
295 props->device_cap_flags = IB_DEVICE_PORT_ACTIVE_EVENT |
296 IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
297 props->max_cq = us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ] *
298 atomic_read(&us_ibdev->vf_cnt.refcount);
299 props->max_pd = USNIC_UIOM_MAX_PD_CNT;
300 props->max_mr = USNIC_UIOM_MAX_MR_CNT;
301 props->local_ca_ack_delay = 0;
302 props->max_pkeys = 0;
303 props->atomic_cap = IB_ATOMIC_NONE;
304 props->masked_atomic_cap = props->atomic_cap;
305 props->max_qp_rd_atom = 0;
306 props->max_qp_init_rd_atom = 0;
307 props->max_res_rd_atom = 0;
309 props->max_srq_wr = 0;
310 props->max_srq_sge = 0;
311 props->max_fast_reg_page_list_len = 0;
312 props->max_mcast_grp = 0;
313 props->max_mcast_qp_attach = 0;
314 props->max_total_mcast_qp_attach = 0;
315 props->max_map_per_fmr = 0;
316 /* Owned by Userspace
317 * max_qp_wr, max_sge, max_sge_rd, max_cqe */
318 mutex_unlock(&us_ibdev->usdev_lock);
323 int usnic_ib_query_port(struct ib_device *ibdev, u8 port,
324 struct ib_port_attr *props)
326 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
327 struct ethtool_link_ksettings cmd;
331 mutex_lock(&us_ibdev->usdev_lock);
332 __ethtool_get_link_ksettings(us_ibdev->netdev, &cmd);
333 memset(props, 0, sizeof(*props));
340 if (!us_ibdev->ufdev->link_up) {
341 props->state = IB_PORT_DOWN;
342 props->phys_state = 3;
343 } else if (!us_ibdev->ufdev->inaddr) {
344 props->state = IB_PORT_INIT;
345 props->phys_state = 4;
347 props->state = IB_PORT_ACTIVE;
348 props->phys_state = 5;
351 props->port_cap_flags = 0;
352 props->gid_tbl_len = 1;
353 props->pkey_tbl_len = 1;
354 props->bad_pkey_cntr = 0;
355 props->qkey_viol_cntr = 0;
356 eth_speed_to_ib_speed(cmd.base.speed, &props->active_speed,
357 &props->active_width);
358 props->max_mtu = IB_MTU_4096;
359 props->active_mtu = iboe_get_mtu(us_ibdev->ufdev->mtu);
360 /* Userspace will adjust for hdrs */
361 props->max_msg_sz = us_ibdev->ufdev->mtu;
362 props->max_vl_num = 1;
363 mutex_unlock(&us_ibdev->usdev_lock);
368 int usnic_ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
370 struct ib_qp_init_attr *qp_init_attr)
372 struct usnic_ib_qp_grp *qp_grp;
373 struct usnic_ib_vf *vf;
378 memset(qp_attr, 0, sizeof(*qp_attr));
379 memset(qp_init_attr, 0, sizeof(*qp_init_attr));
381 qp_grp = to_uqp_grp(qp);
383 mutex_lock(&vf->pf->usdev_lock);
385 qp_attr->qp_state = qp_grp->state;
386 qp_attr->cur_qp_state = qp_grp->state;
388 switch (qp_grp->ibqp.qp_type) {
393 usnic_err("Unexpected qp_type %d\n", qp_grp->ibqp.qp_type);
398 mutex_unlock(&vf->pf->usdev_lock);
402 mutex_unlock(&vf->pf->usdev_lock);
406 int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
410 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
416 mutex_lock(&us_ibdev->usdev_lock);
417 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
418 usnic_mac_ip_to_gid(us_ibdev->ufdev->mac, us_ibdev->ufdev->inaddr,
420 mutex_unlock(&us_ibdev->usdev_lock);
425 int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
435 struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev,
436 struct ib_ucontext *context,
437 struct ib_udata *udata)
439 struct usnic_ib_pd *pd;
444 pd = kzalloc(sizeof(*pd), GFP_KERNEL);
446 return ERR_PTR(-ENOMEM);
448 umem_pd = pd->umem_pd = usnic_uiom_alloc_pd();
449 if (IS_ERR_OR_NULL(umem_pd)) {
451 return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM);
454 usnic_info("domain 0x%p allocated for context 0x%p and device %s\n",
455 pd, context, ibdev->name);
459 int usnic_ib_dealloc_pd(struct ib_pd *pd)
461 usnic_info("freeing domain 0x%p\n", pd);
463 usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd);
468 struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
469 struct ib_qp_init_attr *init_attr,
470 struct ib_udata *udata)
473 struct usnic_ib_dev *us_ibdev;
474 struct usnic_ib_qp_grp *qp_grp;
475 struct usnic_ib_ucontext *ucontext;
477 struct usnic_vnic_res_spec res_spec;
478 struct usnic_ib_create_qp_cmd cmd;
479 struct usnic_transport_spec trans_spec;
483 ucontext = to_uucontext(pd->uobject->context);
484 us_ibdev = to_usdev(pd->device);
486 if (init_attr->create_flags)
487 return ERR_PTR(-EINVAL);
489 err = ib_copy_from_udata(&cmd, udata, sizeof(cmd));
491 usnic_err("%s: cannot copy udata for create_qp\n",
492 us_ibdev->ib_dev.name);
493 return ERR_PTR(-EINVAL);
496 err = create_qp_validate_user_data(cmd);
498 usnic_err("%s: Failed to validate user data\n",
499 us_ibdev->ib_dev.name);
500 return ERR_PTR(-EINVAL);
503 if (init_attr->qp_type != IB_QPT_UD) {
504 usnic_err("%s asked to make a non-UD QP: %d\n",
505 us_ibdev->ib_dev.name, init_attr->qp_type);
506 return ERR_PTR(-EINVAL);
509 trans_spec = cmd.spec;
510 mutex_lock(&us_ibdev->usdev_lock);
511 cq_cnt = (init_attr->send_cq == init_attr->recv_cq) ? 1 : 2;
512 res_spec = min_transport_spec[trans_spec.trans_type];
513 usnic_vnic_res_spec_update(&res_spec, USNIC_VNIC_RES_TYPE_CQ, cq_cnt);
514 qp_grp = find_free_vf_and_create_qp_grp(us_ibdev, to_upd(pd),
517 if (IS_ERR_OR_NULL(qp_grp)) {
518 err = qp_grp ? PTR_ERR(qp_grp) : -ENOMEM;
519 goto out_release_mutex;
522 err = usnic_ib_fill_create_qp_resp(qp_grp, udata);
525 goto out_release_qp_grp;
528 qp_grp->ctx = ucontext;
529 list_add_tail(&qp_grp->link, &ucontext->qp_grp_list);
530 usnic_ib_log_vf(qp_grp->vf);
531 mutex_unlock(&us_ibdev->usdev_lock);
532 return &qp_grp->ibqp;
535 qp_grp_destroy(qp_grp);
537 mutex_unlock(&us_ibdev->usdev_lock);
541 int usnic_ib_destroy_qp(struct ib_qp *qp)
543 struct usnic_ib_qp_grp *qp_grp;
544 struct usnic_ib_vf *vf;
548 qp_grp = to_uqp_grp(qp);
550 mutex_lock(&vf->pf->usdev_lock);
551 if (usnic_ib_qp_grp_modify(qp_grp, IB_QPS_RESET, NULL)) {
552 usnic_err("Failed to move qp grp %u to reset\n",
556 list_del(&qp_grp->link);
557 qp_grp_destroy(qp_grp);
558 mutex_unlock(&vf->pf->usdev_lock);
563 int usnic_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
564 int attr_mask, struct ib_udata *udata)
566 struct usnic_ib_qp_grp *qp_grp;
570 qp_grp = to_uqp_grp(ibqp);
572 mutex_lock(&qp_grp->vf->pf->usdev_lock);
573 if ((attr_mask & IB_QP_PORT) && attr->port_num != 1) {
574 /* usnic devices only have one port */
578 if (attr_mask & IB_QP_STATE) {
579 status = usnic_ib_qp_grp_modify(qp_grp, attr->qp_state, NULL);
581 usnic_err("Unhandled request, attr_mask=0x%x\n", attr_mask);
586 mutex_unlock(&qp_grp->vf->pf->usdev_lock);
590 struct ib_cq *usnic_ib_create_cq(struct ib_device *ibdev,
591 const struct ib_cq_init_attr *attr,
592 struct ib_ucontext *context,
593 struct ib_udata *udata)
599 return ERR_PTR(-EINVAL);
601 cq = kzalloc(sizeof(*cq), GFP_KERNEL);
603 return ERR_PTR(-EBUSY);
608 int usnic_ib_destroy_cq(struct ib_cq *cq)
615 struct ib_mr *usnic_ib_reg_mr(struct ib_pd *pd, u64 start, u64 length,
616 u64 virt_addr, int access_flags,
617 struct ib_udata *udata)
619 struct usnic_ib_mr *mr;
622 usnic_dbg("start 0x%llx va 0x%llx length 0x%llx\n", start,
625 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
627 return ERR_PTR(-ENOMEM);
629 mr->umem = usnic_uiom_reg_get(to_upd(pd)->umem_pd, start, length,
631 if (IS_ERR_OR_NULL(mr->umem)) {
632 err = mr->umem ? PTR_ERR(mr->umem) : -EFAULT;
636 mr->ibmr.lkey = mr->ibmr.rkey = 0;
644 int usnic_ib_dereg_mr(struct ib_mr *ibmr)
646 struct usnic_ib_mr *mr = to_umr(ibmr);
648 usnic_dbg("va 0x%lx length 0x%zx\n", mr->umem->va, mr->umem->length);
650 usnic_uiom_reg_release(mr->umem, ibmr->pd->uobject->context->closing);
655 struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev,
656 struct ib_udata *udata)
658 struct usnic_ib_ucontext *context;
659 struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
662 context = kmalloc(sizeof(*context), GFP_KERNEL);
664 return ERR_PTR(-ENOMEM);
666 INIT_LIST_HEAD(&context->qp_grp_list);
667 mutex_lock(&us_ibdev->usdev_lock);
668 list_add_tail(&context->link, &us_ibdev->ctx_list);
669 mutex_unlock(&us_ibdev->usdev_lock);
671 return &context->ibucontext;
674 int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
676 struct usnic_ib_ucontext *context = to_uucontext(ibcontext);
677 struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device);
680 mutex_lock(&us_ibdev->usdev_lock);
681 BUG_ON(!list_empty(&context->qp_grp_list));
682 list_del(&context->link);
683 mutex_unlock(&us_ibdev->usdev_lock);
688 int usnic_ib_mmap(struct ib_ucontext *context,
689 struct vm_area_struct *vma)
691 struct usnic_ib_ucontext *uctx = to_ucontext(context);
692 struct usnic_ib_dev *us_ibdev;
693 struct usnic_ib_qp_grp *qp_grp;
694 struct usnic_ib_vf *vf;
695 struct vnic_dev_bar *bar;
702 us_ibdev = to_usdev(context->device);
703 vma->vm_flags |= VM_IO;
704 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
705 vfid = vma->vm_pgoff;
706 usnic_dbg("Page Offset %lu PAGE_SHIFT %u VFID %u\n",
707 vma->vm_pgoff, PAGE_SHIFT, vfid);
709 mutex_lock(&us_ibdev->usdev_lock);
710 list_for_each_entry(qp_grp, &uctx->qp_grp_list, link) {
712 if (usnic_vnic_get_index(vf->vnic) == vfid) {
713 bar = usnic_vnic_get_bar(vf->vnic, 0);
714 if ((vma->vm_end - vma->vm_start) != bar->len) {
715 usnic_err("Bar0 Len %lu - Request map %lu\n",
717 vma->vm_end - vma->vm_start);
718 mutex_unlock(&us_ibdev->usdev_lock);
721 bus_addr = bar->bus_addr;
723 usnic_dbg("bus: %pa vaddr: %p size: %ld\n",
724 &bus_addr, bar->vaddr, bar->len);
725 mutex_unlock(&us_ibdev->usdev_lock);
727 return remap_pfn_range(vma,
729 bus_addr >> PAGE_SHIFT,
730 len, vma->vm_page_prot);
734 mutex_unlock(&us_ibdev->usdev_lock);
735 usnic_err("No VF %u found\n", vfid);
739 /* In ib callbacks section - Start of stub funcs */
740 struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd,
741 struct ib_ah_attr *ah_attr,
742 struct ib_udata *udata)
746 return ERR_PTR(-EPERM);
749 int usnic_ib_destroy_ah(struct ib_ah *ah)
755 int usnic_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
756 struct ib_send_wr **bad_wr)
762 int usnic_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
763 struct ib_recv_wr **bad_wr)
769 int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries,
776 int usnic_ib_req_notify_cq(struct ib_cq *cq,
777 enum ib_cq_notify_flags flags)
783 struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc)
786 return ERR_PTR(-ENOMEM);
790 /* In ib callbacks section - End of stub funcs */
791 /* End of ib callbacks section */