--- /dev/null
+/*
+ * 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.
+ */
+
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_addr.h>
+
+#include "core_priv.h"
+
+__attribute_const__ 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;
+ }
+}
+EXPORT_SYMBOL(ib_rate_to_mult);
+
+__attribute_const__ 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;
+ }
+}
+EXPORT_SYMBOL(mult_to_ib_rate);
+
+__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
+{
+ switch (rate) {
+ case IB_RATE_2_5_GBPS: return 2500;
+ case IB_RATE_5_GBPS: return 5000;
+ case IB_RATE_10_GBPS: return 10000;
+ case IB_RATE_20_GBPS: return 20000;
+ case IB_RATE_30_GBPS: return 30000;
+ case IB_RATE_40_GBPS: return 40000;
+ case IB_RATE_60_GBPS: return 60000;
+ case IB_RATE_80_GBPS: return 80000;
+ case IB_RATE_120_GBPS: return 120000;
+ case IB_RATE_14_GBPS: return 14062;
+ case IB_RATE_56_GBPS: return 56250;
+ case IB_RATE_112_GBPS: return 112500;
+ case IB_RATE_168_GBPS: return 168750;
+ case IB_RATE_25_GBPS: return 25781;
+ case IB_RATE_100_GBPS: return 103125;
+ case IB_RATE_200_GBPS: return 206250;
+ case IB_RATE_300_GBPS: return 309375;
+ default: return -1;
+ }
+}
+EXPORT_SYMBOL(ib_rate_to_mbps);
+
+__attribute_const__ 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;
+ case RDMA_NODE_USNIC:
+ return RDMA_TRANSPORT_USNIC;
+ case RDMA_NODE_USNIC_UDP:
+ return RDMA_TRANSPORT_USNIC_UDP;
+ default:
+ BUG();
+ return 0;
+ }
+}
+EXPORT_SYMBOL(rdma_node_get_transport);
+
+enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
+{
+ if (device->get_link_layer)
+ return device->get_link_layer(device, port_num);
+
+ switch (rdma_node_get_transport(device->node_type)) {
+ case RDMA_TRANSPORT_IB:
+ return IB_LINK_LAYER_INFINIBAND;
+ case RDMA_TRANSPORT_IWARP:
+ case RDMA_TRANSPORT_USNIC:
+ case RDMA_TRANSPORT_USNIC_UDP:
+ return IB_LINK_LAYER_ETHERNET;
+ default:
+ return IB_LINK_LAYER_UNSPECIFIED;
+ }
+}
+EXPORT_SYMBOL(rdma_port_get_link_layer);
+
+/* 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_set(&pd->usecnt, 0);
+ }
+
+ return pd;
+}
+EXPORT_SYMBOL(ib_alloc_pd);
+
+int ib_dealloc_pd(struct ib_pd *pd)
+{
+ if (atomic_read(&pd->usecnt))
+ return -EBUSY;
+
+ return pd->device->dealloc_pd(pd);
+}
+EXPORT_SYMBOL(ib_dealloc_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_inc(&pd->usecnt);
+ }
+
+ return ah;
+}
+EXPORT_SYMBOL(ib_create_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;
+ int is_eth = (rdma_port_get_link_layer(device, port_num) ==
+ IB_LINK_LAYER_ETHERNET);
+
+ memset(ah_attr, 0, sizeof *ah_attr);
+ if (is_eth) {
+ if (!(wc->wc_flags & IB_WC_GRH))
+ return -EPROTOTYPE;
+
+ if (wc->wc_flags & IB_WC_WITH_SMAC &&
+ wc->wc_flags & IB_WC_WITH_VLAN) {
+ memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
+ ah_attr->vlan_id = wc->vlan_id;
+ } else {
+ ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
+ ah_attr->dmac, &ah_attr->vlan_id);
+ if (ret)
+ return ret;
+ }
+ } else {
+ ah_attr->vlan_id = 0xffff;
+ }
+
+ 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 = be32_to_cpu(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;
+}
+EXPORT_SYMBOL(ib_init_ah_from_wc);
+
+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);
+}
+EXPORT_SYMBOL(ib_create_ah_from_wc);
+
+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;
+}
+EXPORT_SYMBOL(ib_modify_ah);
+
+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;
+}
+EXPORT_SYMBOL(ib_query_ah);
+
+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_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_ah);
+
+/* 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;
+ srq->srq_type = srq_init_attr->srq_type;
+ if (srq->srq_type == IB_SRQT_XRC) {
+ srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
+ srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
+ atomic_inc(&srq->ext.xrc.xrcd->usecnt);
+ atomic_inc(&srq->ext.xrc.cq->usecnt);
+ }
+ atomic_inc(&pd->usecnt);
+ atomic_set(&srq->usecnt, 0);
+ }
+
+ return srq;
+}
+EXPORT_SYMBOL(ib_create_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->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_srq);
+
+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;
+}
+EXPORT_SYMBOL(ib_query_srq);
+
+int ib_destroy_srq(struct ib_srq *srq)
+{
+ struct ib_pd *pd;
+ enum ib_srq_type srq_type;
+ struct ib_xrcd *uninitialized_var(xrcd);
+ struct ib_cq *uninitialized_var(cq);
+ int ret;
+
+ if (atomic_read(&srq->usecnt))
+ return -EBUSY;
+
+ pd = srq->pd;
+ srq_type = srq->srq_type;
+ if (srq_type == IB_SRQT_XRC) {
+ xrcd = srq->ext.xrc.xrcd;
+ cq = srq->ext.xrc.cq;
+ }
+
+ ret = srq->device->destroy_srq(srq);
+ if (!ret) {
+ atomic_dec(&pd->usecnt);
+ if (srq_type == IB_SRQT_XRC) {
+ atomic_dec(&xrcd->usecnt);
+ atomic_dec(&cq->usecnt);
+ }
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_srq);
+
+/* Queue pairs */
+
+static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
+{
+ struct ib_qp *qp = context;
+ unsigned long flags;
+
+ spin_lock_irqsave(&qp->device->event_handler_lock, flags);
+ list_for_each_entry(event->element.qp, &qp->open_list, open_list)
+ if (event->element.qp->event_handler)
+ event->element.qp->event_handler(event, event->element.qp->qp_context);
+ spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
+}
+
+static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
+{
+ mutex_lock(&xrcd->tgt_qp_mutex);
+ list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
+ mutex_unlock(&xrcd->tgt_qp_mutex);
+}
+
+static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
+ void (*event_handler)(struct ib_event *, void *),
+ void *qp_context)
+{
+ struct ib_qp *qp;
+ unsigned long flags;
+
+ qp = kzalloc(sizeof *qp, GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ qp->real_qp = real_qp;
+ atomic_inc(&real_qp->usecnt);
+ qp->device = real_qp->device;
+ qp->event_handler = event_handler;
+ qp->qp_context = qp_context;
+ qp->qp_num = real_qp->qp_num;
+ qp->qp_type = real_qp->qp_type;
+
+ spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
+ list_add(&qp->open_list, &real_qp->open_list);
+ spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
+
+ return qp;
+}
+
+struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
+ struct ib_qp_open_attr *qp_open_attr)
+{
+ struct ib_qp *qp, *real_qp;
+
+ if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
+ return ERR_PTR(-EINVAL);
+
+ qp = ERR_PTR(-EINVAL);
+ mutex_lock(&xrcd->tgt_qp_mutex);
+ list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
+ if (real_qp->qp_num == qp_open_attr->qp_num) {
+ qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
+ qp_open_attr->qp_context);
+ break;
+ }
+ }
+ mutex_unlock(&xrcd->tgt_qp_mutex);
+ return qp;
+}
+EXPORT_SYMBOL(ib_open_qp);
+
+struct ib_qp *ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct ib_qp *qp, *real_qp;
+ struct ib_device *device;
+
+ device = pd ? pd->device : qp_init_attr->xrcd->device;
+ qp = device->create_qp(pd, qp_init_attr, NULL);
+
+ if (!IS_ERR(qp)) {
+ qp->device = device;
+ qp->real_qp = qp;
+ qp->uobject = NULL;
+ qp->qp_type = qp_init_attr->qp_type;
+
+ atomic_set(&qp->usecnt, 0);
+ if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
+ qp->event_handler = __ib_shared_qp_event_handler;
+ qp->qp_context = qp;
+ qp->pd = NULL;
+ qp->send_cq = qp->recv_cq = NULL;
+ qp->srq = NULL;
+ qp->xrcd = qp_init_attr->xrcd;
+ atomic_inc(&qp_init_attr->xrcd->usecnt);
+ INIT_LIST_HEAD(&qp->open_list);
+
+ real_qp = qp;
+ qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
+ qp_init_attr->qp_context);
+ if (!IS_ERR(qp))
+ __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
+ else
+ real_qp->device->destroy_qp(real_qp);
+ } else {
+ qp->event_handler = qp_init_attr->event_handler;
+ qp->qp_context = qp_init_attr->qp_context;
+ if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
+ qp->recv_cq = NULL;
+ qp->srq = NULL;
+ } else {
+ qp->recv_cq = qp_init_attr->recv_cq;
+ atomic_inc(&qp_init_attr->recv_cq->usecnt);
+ qp->srq = qp_init_attr->srq;
+ if (qp->srq)
+ atomic_inc(&qp_init_attr->srq->usecnt);
+ }
+
+ qp->pd = pd;
+ qp->send_cq = qp_init_attr->send_cq;
+ qp->xrcd = NULL;
+
+ atomic_inc(&pd->usecnt);
+ atomic_inc(&qp_init_attr->send_cq->usecnt);
+ }
+ }
+
+ return qp;
+}
+EXPORT_SYMBOL(ib_create_qp);
+
+static const struct {
+ int valid;
+ enum ib_qp_attr_mask req_param[IB_QPT_MAX];
+ enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX];
+ enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
+ enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX];
+} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
+ [IB_QPS_RESET] = {
+ [IB_QPS_RESET] = { .valid = 1 },
+ [IB_QPS_INIT] = {
+ .valid = 1,
+ .req_param = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_QKEY),
+ [IB_QPT_RAW_PACKET] = IB_QP_PORT,
+ [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_XRC_INI] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_XRC_TGT] = (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_XRC_INI] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_XRC_TGT] = (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),
+ [IB_QPT_XRC_INI] = (IB_QP_AV |
+ IB_QP_PATH_MTU |
+ IB_QP_DEST_QPN |
+ IB_QP_RQ_PSN),
+ [IB_QPT_XRC_TGT] = (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),
+ },
+ .req_param_add_eth = {
+ [IB_QPT_RC] = (IB_QP_SMAC),
+ [IB_QPT_UC] = (IB_QP_SMAC),
+ [IB_QPT_XRC_INI] = (IB_QP_SMAC),
+ [IB_QPT_XRC_TGT] = (IB_QP_SMAC)
+ },
+ .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_XRC_INI] = (IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX),
+ [IB_QPT_XRC_TGT] = (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),
+ },
+ .opt_param_add_eth = {
+ [IB_QPT_RC] = (IB_QP_ALT_SMAC |
+ IB_QP_VID |
+ IB_QP_ALT_VID),
+ [IB_QPT_UC] = (IB_QP_ALT_SMAC |
+ IB_QP_VID |
+ IB_QP_ALT_VID),
+ [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC |
+ IB_QP_VID |
+ IB_QP_ALT_VID),
+ [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC |
+ IB_QP_VID |
+ IB_QP_ALT_VID)
+ }
+ }
+ },
+ [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_XRC_INI] = (IB_QP_TIMEOUT |
+ IB_QP_RETRY_CNT |
+ IB_QP_RNR_RETRY |
+ IB_QP_SQ_PSN |
+ IB_QP_MAX_QP_RD_ATOMIC),
+ [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
+ IB_QP_SQ_PSN),
+ [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_XRC_INI] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_XRC_TGT] = (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_XRC_INI] = (IB_QP_CUR_STATE |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_ALT_PATH |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_XRC_TGT] = (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_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
+ [IB_QPT_XRC_TGT] = 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_XRC_INI] = (IB_QP_CUR_STATE |
+ IB_QP_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_XRC_TGT] = (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_XRC_INI] = (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_ALT_PATH |
+ IB_QP_ACCESS_FLAGS |
+ IB_QP_PKEY_INDEX |
+ IB_QP_PATH_MIG_STATE),
+ [IB_QPT_XRC_TGT] = (IB_QP_PORT |
+ IB_QP_AV |
+ IB_QP_TIMEOUT |
+ 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 rdma_link_layer ll)
+{
+ 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 (ll == IB_LINK_LAYER_ETHERNET) {
+ req_param |= qp_state_table[cur_state][next_state].
+ req_param_add_eth[type];
+ opt_param |= qp_state_table[cur_state][next_state].
+ opt_param_add_eth[type];
+ }
+
+ if ((mask & req_param) != req_param)
+ return 0;
+
+ if (mask & ~(req_param | opt_param | IB_QP_STATE))
+ return 0;
+
+ return 1;
+}
+EXPORT_SYMBOL(ib_modify_qp_is_ok);
+
+int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr, int *qp_attr_mask)
+{
+ int ret = 0;
+ union ib_gid sgid;
+
+ if ((*qp_attr_mask & IB_QP_AV) &&
+ (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num) == IB_LINK_LAYER_ETHERNET)) {
+ ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
+ qp_attr->ah_attr.grh.sgid_index, &sgid);
+ if (ret)
+ goto out;
+ if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
+ rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
+ rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
+ if (!(*qp_attr_mask & IB_QP_VID))
+ qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
+ } else {
+ ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
+ qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
+ if (ret)
+ goto out;
+ ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
+ if (ret)
+ goto out;
+ }
+ *qp_attr_mask |= IB_QP_SMAC;
+ if (qp_attr->vlan_id < 0xFFFF)
+ *qp_attr_mask |= IB_QP_VID;
+ }
+out:
+ return ret;
+}
+EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
+
+
+int ib_modify_qp(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask)
+{
+ int ret;
+
+ ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
+ if (ret)
+ return ret;
+
+ return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
+}
+EXPORT_SYMBOL(ib_modify_qp);
+
+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->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_qp);
+
+int ib_close_qp(struct ib_qp *qp)
+{
+ struct ib_qp *real_qp;
+ unsigned long flags;
+
+ real_qp = qp->real_qp;
+ if (real_qp == qp)
+ return -EINVAL;
+
+ spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
+ list_del(&qp->open_list);
+ spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
+
+ atomic_dec(&real_qp->usecnt);
+ kfree(qp);
+
+ return 0;
+}
+EXPORT_SYMBOL(ib_close_qp);
+
+static int __ib_destroy_shared_qp(struct ib_qp *qp)
+{
+ struct ib_xrcd *xrcd;
+ struct ib_qp *real_qp;
+ int ret;
+
+ real_qp = qp->real_qp;
+ xrcd = real_qp->xrcd;
+
+ mutex_lock(&xrcd->tgt_qp_mutex);
+ ib_close_qp(qp);
+ if (atomic_read(&real_qp->usecnt) == 0)
+ list_del(&real_qp->xrcd_list);
+ else
+ real_qp = NULL;
+ mutex_unlock(&xrcd->tgt_qp_mutex);
+
+ if (real_qp) {
+ ret = ib_destroy_qp(real_qp);
+ if (!ret)
+ atomic_dec(&xrcd->usecnt);
+ else
+ __ib_insert_xrcd_qp(xrcd, real_qp);
+ }
+
+ return 0;
+}
+
+int ib_destroy_qp(struct ib_qp *qp)
+{
+ struct ib_pd *pd;
+ struct ib_cq *scq, *rcq;
+ struct ib_srq *srq;
+ int ret;
+
+ if (atomic_read(&qp->usecnt))
+ return -EBUSY;
+
+ if (qp->real_qp != qp)
+ return __ib_destroy_shared_qp(qp);
+
+ pd = qp->pd;
+ scq = qp->send_cq;
+ rcq = qp->recv_cq;
+ srq = qp->srq;
+
+ ret = qp->device->destroy_qp(qp);
+ if (!ret) {
+ if (pd)
+ atomic_dec(&pd->usecnt);
+ if (scq)
+ atomic_dec(&scq->usecnt);
+ if (rcq)
+ atomic_dec(&rcq->usecnt);
+ if (srq)
+ atomic_dec(&srq->usecnt);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_qp);
+
+/* 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_set(&cq->usecnt, 0);
+ }
+
+ return cq;
+}
+EXPORT_SYMBOL(ib_create_cq);
+
+int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+ return cq->device->modify_cq ?
+ cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_cq);
+
+int ib_destroy_cq(struct ib_cq *cq)
+{
+ if (atomic_read(&cq->usecnt))
+ return -EBUSY;
+
+ return cq->device->destroy_cq(cq);
+}
+EXPORT_SYMBOL(ib_destroy_cq);
+
+int ib_resize_cq(struct ib_cq *cq, int cqe)
+{
+ return cq->device->resize_cq ?
+ cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_resize_cq);
+
+/* Memory regions */
+
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+ struct ib_mr *mr;
+ int err;
+
+ err = ib_check_mr_access(mr_access_flags);
+ if (err)
+ return ERR_PTR(err);
+
+ 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_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_get_dma_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;
+ int err;
+
+ err = ib_check_mr_access(mr_access_flags);
+ if (err)
+ return ERR_PTR(err);
+
+ if (!pd->device->reg_phys_mr)
+ return ERR_PTR(-ENOSYS);
+
+ 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_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_reg_phys_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;
+
+ ret = ib_check_mr_access(mr_access_flags);
+ if (ret)
+ return ret;
+
+ if (!mr->device->rereg_phys_mr)
+ return -ENOSYS;
+
+ if (atomic_read(&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_dec(&old_pd->usecnt);
+ atomic_inc(&pd->usecnt);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_rereg_phys_mr);
+
+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;
+}
+EXPORT_SYMBOL(ib_query_mr);
+
+int ib_dereg_mr(struct ib_mr *mr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ if (atomic_read(&mr->usecnt))
+ return -EBUSY;
+
+ pd = mr->pd;
+ ret = mr->device->dereg_mr(mr);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dereg_mr);
+
+struct ib_mr *ib_create_mr(struct ib_pd *pd,
+ struct ib_mr_init_attr *mr_init_attr)
+{
+ struct ib_mr *mr;
+
+ if (!pd->device->create_mr)
+ return ERR_PTR(-ENOSYS);
+
+ mr = pd->device->create_mr(pd, mr_init_attr);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ mr->uobject = NULL;
+ atomic_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_create_mr);
+
+int ib_destroy_mr(struct ib_mr *mr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ if (atomic_read(&mr->usecnt))
+ return -EBUSY;
+
+ pd = mr->pd;
+ ret = mr->device->destroy_mr(mr);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_mr);
+
+struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
+{
+ struct ib_mr *mr;
+
+ if (!pd->device->alloc_fast_reg_mr)
+ return ERR_PTR(-ENOSYS);
+
+ mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ mr->uobject = NULL;
+ atomic_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
+
+struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
+ int max_page_list_len)
+{
+ struct ib_fast_reg_page_list *page_list;
+
+ if (!device->alloc_fast_reg_page_list)
+ return ERR_PTR(-ENOSYS);
+
+ page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
+
+ if (!IS_ERR(page_list)) {
+ page_list->device = device;
+ page_list->max_page_list_len = max_page_list_len;
+ }
+
+ return page_list;
+}
+EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
+
+void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
+{
+ page_list->device->free_fast_reg_page_list(page_list);
+}
+EXPORT_SYMBOL(ib_free_fast_reg_page_list);
+
+/* Memory windows */
+
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
+{
+ struct ib_mw *mw;
+
+ if (!pd->device->alloc_mw)
+ return ERR_PTR(-ENOSYS);
+
+ mw = pd->device->alloc_mw(pd, type);
+ if (!IS_ERR(mw)) {
+ mw->device = pd->device;
+ mw->pd = pd;
+ mw->uobject = NULL;
+ mw->type = type;
+ atomic_inc(&pd->usecnt);
+ }
+
+ return mw;
+}
+EXPORT_SYMBOL(ib_alloc_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_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_mw);
+
+/* "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_inc(&pd->usecnt);
+ }
+
+ return fmr;
+}
+EXPORT_SYMBOL(ib_alloc_fmr);
+
+int ib_unmap_fmr(struct list_head *fmr_list)
+{
+ struct ib_fmr *fmr;
+
+ if (list_empty(fmr_list))
+ return 0;
+
+ fmr = list_entry(fmr_list->next, struct ib_fmr, list);
+ return fmr->device->unmap_fmr(fmr_list);
+}
+EXPORT_SYMBOL(ib_unmap_fmr);
+
+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_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_fmr);
+
+/* Multicast groups */
+
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ int ret;
+
+ if (!qp->device->attach_mcast)
+ return -ENOSYS;
+ if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+ return -EINVAL;
+
+ ret = qp->device->attach_mcast(qp, gid, lid);
+ if (!ret)
+ atomic_inc(&qp->usecnt);
+ return ret;
+}
+EXPORT_SYMBOL(ib_attach_mcast);
+
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ int ret;
+
+ if (!qp->device->detach_mcast)
+ return -ENOSYS;
+ if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+ return -EINVAL;
+
+ ret = qp->device->detach_mcast(qp, gid, lid);
+ if (!ret)
+ atomic_dec(&qp->usecnt);
+ return ret;
+}
+EXPORT_SYMBOL(ib_detach_mcast);
+
+struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
+{
+ struct ib_xrcd *xrcd;
+
+ if (!device->alloc_xrcd)
+ return ERR_PTR(-ENOSYS);
+
+ xrcd = device->alloc_xrcd(device, NULL, NULL);
+ if (!IS_ERR(xrcd)) {
+ xrcd->device = device;
+ xrcd->inode = NULL;
+ atomic_set(&xrcd->usecnt, 0);
+ mutex_init(&xrcd->tgt_qp_mutex);
+ INIT_LIST_HEAD(&xrcd->tgt_qp_list);
+ }
+
+ return xrcd;
+}
+EXPORT_SYMBOL(ib_alloc_xrcd);
+
+int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
+{
+ struct ib_qp *qp;
+ int ret;
+
+ if (atomic_read(&xrcd->usecnt))
+ return -EBUSY;
+
+ while (!list_empty(&xrcd->tgt_qp_list)) {
+ qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
+ ret = ib_destroy_qp(qp);
+ if (ret)
+ return ret;
+ }
+
+ return xrcd->device->dealloc_xrcd(xrcd);
+}
+EXPORT_SYMBOL(ib_dealloc_xrcd);
+
+struct ib_flow *ib_create_flow(struct ib_qp *qp,
+ struct ib_flow_attr *flow_attr,
+ int domain)
+{
+ struct ib_flow *flow_id;
+ if (!qp->device->create_flow)
+ return ERR_PTR(-ENOSYS);
+
+ flow_id = qp->device->create_flow(qp, flow_attr, domain);
+ if (!IS_ERR(flow_id))
+ atomic_inc(&qp->usecnt);
+ return flow_id;
+}
+EXPORT_SYMBOL(ib_create_flow);
+
+int ib_destroy_flow(struct ib_flow *flow_id)
+{
+ int err;
+ struct ib_qp *qp = flow_id->qp;
+
+ err = qp->device->destroy_flow(flow_id);
+ if (!err)
+ atomic_dec(&qp->usecnt);
+ return err;
+}
+EXPORT_SYMBOL(ib_destroy_flow);
+
+int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
+ struct ib_mr_status *mr_status)
+{
+ return mr->device->check_mr_status ?
+ mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_check_mr_status);
Code Review / kvmfornfv.git / blobdiff