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diff --git a/sys/contrib/rdma/rdma_verbs.c b/sys/contrib/rdma/rdma_verbs.c
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+/*
+ * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
+ * Copyright (c) 2004 Intel Corporation. All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation. All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/libkern.h>
+#include <sys/module.h>
+#include <sys/endian.h>
+
+#include <contrib/rdma/ib_verbs.h>
+#include <contrib/rdma/ib_cache.h>
+
+int ib_rate_to_mult(enum ib_rate rate)
+{
+ switch (rate) {
+ case IB_RATE_2_5_GBPS: return 1;
+ case IB_RATE_5_GBPS: return 2;
+ case IB_RATE_10_GBPS: return 4;
+ case IB_RATE_20_GBPS: return 8;
+ case IB_RATE_30_GBPS: return 12;
+ case IB_RATE_40_GBPS: return 16;
+ case IB_RATE_60_GBPS: return 24;
+ case IB_RATE_80_GBPS: return 32;
+ case IB_RATE_120_GBPS: return 48;
+ default: return -1;
+ }
+}
+
+enum ib_rate mult_to_ib_rate(int mult)
+{
+ switch (mult) {
+ case 1: return IB_RATE_2_5_GBPS;
+ case 2: return IB_RATE_5_GBPS;
+ case 4: return IB_RATE_10_GBPS;
+ case 8: return IB_RATE_20_GBPS;
+ case 12: return IB_RATE_30_GBPS;
+ case 16: return IB_RATE_40_GBPS;
+ case 24: return IB_RATE_60_GBPS;
+ case 32: return IB_RATE_80_GBPS;
+ case 48: return IB_RATE_120_GBPS;
+ default: return IB_RATE_PORT_CURRENT;
+ }
+}
+
+enum rdma_transport_type
+rdma_node_get_transport(enum rdma_node_type node_type)
+{
+ switch (node_type) {
+ case RDMA_NODE_IB_CA:
+ case RDMA_NODE_IB_SWITCH:
+ case RDMA_NODE_IB_ROUTER:
+ return RDMA_TRANSPORT_IB;
+ case RDMA_NODE_RNIC:
+ return RDMA_TRANSPORT_IWARP;
+ default:
+ panic("bad condition");
+ return 0;
+ }
+}
+
+/* Protection domains */
+
+struct ib_pd *ib_alloc_pd(struct ib_device *device)
+{
+ struct ib_pd *pd;
+
+ pd = device->alloc_pd(device, NULL, NULL);
+
+ if (!IS_ERR(pd)) {
+ pd->device = device;
+ pd->uobject = NULL;
+ atomic_store_rel_int(&pd->usecnt, 0);
+ }
+
+ return pd;
+}
+
+int ib_dealloc_pd(struct ib_pd *pd)
+{
+ if (atomic_load_acq_int(&pd->usecnt))
+ return (EBUSY);
+
+ return pd->device->dealloc_pd(pd);
+}
+
+/* Address handles */
+
+struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ struct ib_ah *ah;
+
+ ah = pd->device->create_ah(pd, ah_attr);
+
+ if (!IS_ERR(ah)) {
+ ah->device = pd->device;
+ ah->pd = pd;
+ ah->uobject = NULL;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ }
+
+ return ah;
+}
+
+int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
+ struct ib_grh *grh, struct ib_ah_attr *ah_attr)
+{
+ u32 flow_class;
+ u16 gid_index;
+ int ret;
+
+ memset(ah_attr, 0, sizeof *ah_attr);
+ ah_attr->dlid = wc->slid;
+ ah_attr->sl = wc->sl;
+ ah_attr->src_path_bits = wc->dlid_path_bits;
+ ah_attr->port_num = port_num;
+
+ if (wc->wc_flags & IB_WC_GRH) {
+ ah_attr->ah_flags = IB_AH_GRH;
+ ah_attr->grh.dgid = grh->sgid;
+
+ ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
+ &gid_index);
+ if (ret)
+ return ret;
+
+ ah_attr->grh.sgid_index = (u8) gid_index;
+ flow_class = be32toh(grh->version_tclass_flow);
+ ah_attr->grh.flow_label = flow_class & 0xFFFFF;
+ ah_attr->grh.hop_limit = 0xFF;
+ ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
+ }
+ return 0;
+}
+
+struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
+ struct ib_grh *grh, u8 port_num)
+{
+ struct ib_ah_attr ah_attr;
+ int ret;
+
+ ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return ib_create_ah(pd, &ah_attr);
+}
+
+int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ return ah->device->modify_ah ?
+ ah->device->modify_ah(ah, ah_attr) :
+ ENOSYS;
+}
+
+int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ return ah->device->query_ah ?
+ ah->device->query_ah(ah, ah_attr) :
+ ENOSYS;
+}
+
+int ib_destroy_ah(struct ib_ah *ah)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = ah->pd;
+ ret = ah->device->destroy_ah(ah);
+ if (!ret)
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+
+ return ret;
+}
+
+/* Shared receive queues */
+
+struct ib_srq *ib_create_srq(struct ib_pd *pd,
+ struct ib_srq_init_attr *srq_init_attr)
+{
+ struct ib_srq *srq;
+
+ if (!pd->device->create_srq)
+ return ERR_PTR(ENOSYS);
+
+ srq = pd->device->create_srq(pd, srq_init_attr, NULL);
+
+ if (!IS_ERR(srq)) {
+ srq->device = pd->device;
+ srq->pd = pd;
+ srq->uobject = NULL;
+ srq->event_handler = srq_init_attr->event_handler;
+ srq->srq_context = srq_init_attr->srq_context;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ atomic_store_rel_int(&srq->usecnt, 0);
+ }
+
+ return srq;
+}
+
+int ib_modify_srq(struct ib_srq *srq,
+ struct ib_srq_attr *srq_attr,
+ enum ib_srq_attr_mask srq_attr_mask)
+{
+ return srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL);
+}
+
+int ib_query_srq(struct ib_srq *srq,
+ struct ib_srq_attr *srq_attr)
+{
+ return srq->device->query_srq ?
+ srq->device->query_srq(srq, srq_attr) : ENOSYS;
+}
+
+int ib_destroy_srq(struct ib_srq *srq)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ if (atomic_load_acq_int(&srq->usecnt))
+ return (EBUSY);
+
+ pd = srq->pd;
+
+ ret = srq->device->destroy_srq(srq);
+ if (!ret)
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+
+ return ret;
+}
+
+/* Queue pairs */
+
+struct ib_qp *ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct ib_qp *qp;
+
+ qp = pd->device->create_qp(pd, qp_init_attr, NULL);
+
+ if (!IS_ERR(qp)) {
+ qp->device = pd->device;
+ qp->pd = pd;
+ qp->send_cq = qp_init_attr->send_cq;
+ qp->recv_cq = qp_init_attr->recv_cq;
+ qp->srq = qp_init_attr->srq;
+ qp->uobject = NULL;
+ qp->event_handler = qp_init_attr->event_handler;
+ qp->qp_context = qp_init_attr->qp_context;
+ qp->qp_type = qp_init_attr->qp_type;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ atomic_add_acq_int(&qp_init_attr->send_cq->usecnt, 1);
+ atomic_add_acq_int(&qp_init_attr->recv_cq->usecnt, 1);
+ if (qp_init_attr->srq)
+ atomic_add_acq_int(&qp_init_attr->srq->usecnt, 1);
+ }
+
+ return qp;
+}
+
+static const struct {
+ int valid;
+ enum ib_qp_attr_mask req_param[IB_QPT_RAW_ETY + 1];
+ enum ib_qp_attr_mask opt_param[IB_QPT_RAW_ETY + 1];
+} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
+ [IB_QPS_RESET] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_INIT] = {
+ .valid = 1,
+ .req_param = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ }
+ },
+ },
+ [IB_QPS_INIT] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_INIT] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ }
+ },
+ [IB_QPS_RTR] = {
+ .valid = 1,
+ .req_param = {
+ [IB_QPT_UC] = (IB_QP_AV |
+ IB_QP_PATH_MTU |
+ IB_QP_DEST_QPN |
+ IB_QP_RQ_PSN),
+ [IB_QPT_RC] = (IB_QP_AV |
+ IB_QP_PATH_MTU |
+ IB_QP_DEST_QPN |
+ IB_QP_RQ_PSN |
+ IB_QP_MAX_DEST_RD_ATOMIC |
+ IB_QP_MIN_RNR_TIMER),
+ },
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX),
+ [IB_QPT_RC] = (IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX),
+ [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ }
+ }
+ },
+ [IB_QPS_RTR] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_RTS] = {
+ .valid = 1,
+ .req_param = {
+ [IB_QPT_UD] = IB_QP_SQ_PSN,
+ [IB_QPT_UC] = IB_QP_SQ_PSN,
+ [IB_QPT_RC] = (IB_QP_TIMEOUT |
+ IB_QP_RETRY_CNT |
+ IB_QP_RNR_RETRY |
+ IB_QP_SQ_PSN |
+ IB_QP_MAX_QP_RD_ATOMIC),
+ [IB_QPT_SMI] = IB_QP_SQ_PSN,
+ [IB_QPT_GSI] = IB_QP_SQ_PSN,
+ },
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_RC] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_MIN_RNR_TIMER |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_SMI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ }
+ }
+ },
+ [IB_QPS_RTS] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_RTS] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_CUR_STATE |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_ALT_PATH |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_RC] = (IB_QP_CUR_STATE |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_ALT_PATH |
+ IB_QP_PATH_MIG_STATE |
+ IB_QP_MIN_RNR_TIMER),
+ [IB_QPT_SMI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ }
+ },
+ [IB_QPS_SQD] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+ [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+ [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+ [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+ [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
+ }
+ },
+ },
+ [IB_QPS_SQD] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_RTS] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_RC] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_MIN_RNR_TIMER |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_SMI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ }
+ },
+ [IB_QPS_SQD] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_AV |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_RC] = (IB_QP_PORT |
+ IB_QP_AV |
+ IB_QP_TIMEOUT |
+ IB_QP_RETRY_CNT |
+ IB_QP_RNR_RETRY |
+ IB_QP_MAX_QP_RD_ATOMIC |
+ IB_QP_MAX_DEST_RD_ATOMIC |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX |
+ IB_QP_MIN_RNR_TIMER |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ }
+ }
+ },
+ [IB_QPS_SQE] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 },
+ [IB_QPS_RTS] = {
+ .valid = 1,
+ .opt_param = {
+ [IB_QPT_UD] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_CUR_STATE |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_SMI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_CUR_STATE |
+ IB_QP_QKEY),
+ }
+ }
+ },
+ [IB_QPS_ERR] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_ERR] = { .valid = 1 }
+ }
+};
+
+int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
+ enum ib_qp_type type, enum ib_qp_attr_mask mask)
+{
+ enum ib_qp_attr_mask req_param, opt_param;
+
+ if (cur_state < 0 || cur_state > IB_QPS_ERR ||
+ next_state < 0 || next_state > IB_QPS_ERR)
+ return 0;
+
+ if (mask & IB_QP_CUR_STATE &&
+ cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
+ cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
+ return 0;
+
+ if (!qp_state_table[cur_state][next_state].valid)
+ return 0;
+
+ req_param = qp_state_table[cur_state][next_state].req_param[type];
+ opt_param = qp_state_table[cur_state][next_state].opt_param[type];
+
+ if ((mask & req_param) != req_param)
+ return 0;
+
+ if (mask & ~(req_param | opt_param | IB_QP_STATE))
+ return 0;
+
+ return 1;
+}
+
+int ib_modify_qp(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask)
+{
+ return qp->device->modify_qp(qp, qp_attr, qp_attr_mask, NULL);
+}
+
+int ib_query_qp(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ return qp->device->query_qp ?
+ qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) :
+ ENOSYS;
+}
+
+int ib_destroy_qp(struct ib_qp *qp)
+{
+ struct ib_pd *pd;
+ struct ib_cq *scq, *rcq;
+ struct ib_srq *srq;
+ int ret;
+
+ pd = qp->pd;
+ scq = qp->send_cq;
+ rcq = qp->recv_cq;
+ srq = qp->srq;
+
+ ret = qp->device->destroy_qp(qp);
+ if (!ret) {
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+ atomic_subtract_acq_int(&scq->usecnt, 1);
+ atomic_subtract_acq_int(&rcq->usecnt, 1);
+ if (srq)
+ atomic_subtract_acq_int(&srq->usecnt, 1);
+ }
+
+ return ret;
+}
+
+/* Completion queues */
+
+struct ib_cq *ib_create_cq(struct ib_device *device,
+ ib_comp_handler comp_handler,
+ void (*event_handler)(struct ib_event *, void *),
+ void *cq_context, int cqe, int comp_vector)
+{
+ struct ib_cq *cq;
+
+ cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
+
+ if (!IS_ERR(cq)) {
+ cq->device = device;
+ cq->uobject = NULL;
+ cq->comp_handler = comp_handler;
+ cq->event_handler = event_handler;
+ cq->cq_context = cq_context;
+ atomic_store_rel_int(&cq->usecnt, 0);
+ }
+
+ return cq;
+}
+
+int ib_destroy_cq(struct ib_cq *cq)
+{
+ if (atomic_load_acq_int(&cq->usecnt))
+ return (EBUSY);
+
+ return cq->device->destroy_cq(cq);
+}
+
+int ib_resize_cq(struct ib_cq *cq, int cqe)
+{
+ return cq->device->resize_cq ?
+ cq->device->resize_cq(cq, cqe, NULL) : ENOSYS;
+}
+
+/* Memory regions */
+
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+ struct ib_mr *mr;
+
+ mr = pd->device->get_dma_mr(pd, mr_access_flags);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ mr->uobject = NULL;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ atomic_store_rel_int(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+
+struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ struct ib_mr *mr;
+
+ mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ mr->uobject = NULL;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ atomic_store_rel_int(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+
+int ib_rereg_phys_mr(struct ib_mr *mr,
+ int mr_rereg_mask,
+ struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ struct ib_pd *old_pd;
+ int ret;
+
+ if (!mr->device->rereg_phys_mr)
+ return (ENOSYS);
+
+ if (atomic_load_acq_int(&mr->usecnt))
+ return (EBUSY);
+
+ old_pd = mr->pd;
+
+ ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
+ phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+
+ if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
+ atomic_subtract_acq_int(&old_pd->usecnt, 1);
+ atomic_add_acq_int(&pd->usecnt, 1);
+ }
+
+ return ret;
+}
+
+int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
+{
+ return mr->device->query_mr ?
+ mr->device->query_mr(mr, mr_attr) : ENOSYS;
+}
+
+int ib_dereg_mr(struct ib_mr *mr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ if (atomic_load_acq_int(&mr->usecnt))
+ return (EBUSY);
+
+ pd = mr->pd;
+ ret = mr->device->dereg_mr(mr);
+ if (!ret)
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+
+ return ret;
+}
+
+/* Memory windows */
+
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd)
+{
+ struct ib_mw *mw;
+
+ if (!pd->device->alloc_mw)
+ return ERR_PTR(ENOSYS);
+
+ mw = pd->device->alloc_mw(pd);
+ if (!IS_ERR(mw)) {
+ mw->device = pd->device;
+ mw->pd = pd;
+ mw->uobject = NULL;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ }
+
+ return mw;
+}
+
+int ib_dealloc_mw(struct ib_mw *mw)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = mw->pd;
+ ret = mw->device->dealloc_mw(mw);
+ if (!ret)
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+
+ return ret;
+}
+
+/* "Fast" memory regions */
+
+struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
+ int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr)
+{
+ struct ib_fmr *fmr;
+
+ if (!pd->device->alloc_fmr)
+ return ERR_PTR(ENOSYS);
+
+ fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
+ if (!IS_ERR(fmr)) {
+ fmr->device = pd->device;
+ fmr->pd = pd;
+ atomic_add_acq_int(&pd->usecnt, 1);
+ }
+
+ return fmr;
+}
+
+int ib_unmap_fmr(struct ib_fmr_list_head *fmr_list)
+{
+ struct ib_fmr *fmr;
+
+ if (TAILQ_EMPTY(fmr_list))
+ return 0;
+
+ fmr = TAILQ_FIRST(fmr_list);
+ return fmr->device->unmap_fmr(fmr_list);
+}
+
+int ib_dealloc_fmr(struct ib_fmr *fmr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = fmr->pd;
+ ret = fmr->device->dealloc_fmr(fmr);
+ if (!ret)
+ atomic_subtract_acq_int(&pd->usecnt, 1);
+
+ return ret;
+}
+
+/* Multicast groups */
+
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ if (!qp->device->attach_mcast)
+ return (ENOSYS);
+ if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+ return (EINVAL);
+
+ return qp->device->attach_mcast(qp, gid, lid);
+}
+
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ if (!qp->device->detach_mcast)
+ return (ENOSYS);
+ if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+ return (EINVAL);
+
+ return qp->device->detach_mcast(qp, gid, lid);
+}
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