| /* |
| * 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" |
| |
| static const char * const ib_events[] = { |
| [IB_EVENT_CQ_ERR] = "CQ error", |
| [IB_EVENT_QP_FATAL] = "QP fatal error", |
| [IB_EVENT_QP_REQ_ERR] = "QP request error", |
| [IB_EVENT_QP_ACCESS_ERR] = "QP access error", |
| [IB_EVENT_COMM_EST] = "communication established", |
| [IB_EVENT_SQ_DRAINED] = "send queue drained", |
| [IB_EVENT_PATH_MIG] = "path migration successful", |
| [IB_EVENT_PATH_MIG_ERR] = "path migration error", |
| [IB_EVENT_DEVICE_FATAL] = "device fatal error", |
| [IB_EVENT_PORT_ACTIVE] = "port active", |
| [IB_EVENT_PORT_ERR] = "port error", |
| [IB_EVENT_LID_CHANGE] = "LID change", |
| [IB_EVENT_PKEY_CHANGE] = "P_key change", |
| [IB_EVENT_SM_CHANGE] = "SM change", |
| [IB_EVENT_SRQ_ERR] = "SRQ error", |
| [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", |
| [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", |
| [IB_EVENT_CLIENT_REREGISTER] = "client reregister", |
| [IB_EVENT_GID_CHANGE] = "GID changed", |
| }; |
| |
| const char *ib_event_msg(enum ib_event_type event) |
| { |
| size_t index = event; |
| |
| return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? |
| ib_events[index] : "unrecognized event"; |
| } |
| EXPORT_SYMBOL(ib_event_msg); |
| |
| static const char * const wc_statuses[] = { |
| [IB_WC_SUCCESS] = "success", |
| [IB_WC_LOC_LEN_ERR] = "local length error", |
| [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", |
| [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", |
| [IB_WC_LOC_PROT_ERR] = "local protection error", |
| [IB_WC_WR_FLUSH_ERR] = "WR flushed", |
| [IB_WC_MW_BIND_ERR] = "memory management operation error", |
| [IB_WC_BAD_RESP_ERR] = "bad response error", |
| [IB_WC_LOC_ACCESS_ERR] = "local access error", |
| [IB_WC_REM_INV_REQ_ERR] = "invalid request error", |
| [IB_WC_REM_ACCESS_ERR] = "remote access error", |
| [IB_WC_REM_OP_ERR] = "remote operation error", |
| [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", |
| [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", |
| [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", |
| [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", |
| [IB_WC_REM_ABORT_ERR] = "operation aborted", |
| [IB_WC_INV_EECN_ERR] = "invalid EE context number", |
| [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", |
| [IB_WC_FATAL_ERR] = "fatal error", |
| [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", |
| [IB_WC_GENERAL_ERR] = "general error", |
| }; |
| |
| const char *ib_wc_status_msg(enum ib_wc_status status) |
| { |
| size_t index = status; |
| |
| return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? |
| wc_statuses[index] : "unrecognized status"; |
| } |
| EXPORT_SYMBOL(ib_wc_status_msg); |
| |
| __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, |
| const struct ib_wc *wc, const 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); |
| if (rdma_cap_eth_ah(device, port_num)) { |
| 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, const struct ib_wc *wc, |
| const 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_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) { |
| 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, |
| const struct ib_cq_init_attr *cq_attr) |
| { |
| struct ib_cq *cq; |
| |
| cq = device->create_cq(device, cq_attr, 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); |
| |
| /** |
| * ib_alloc_mr() - Allocates a memory region |
| * @pd: protection domain associated with the region |
| * @mr_type: memory region type |
| * @max_num_sg: maximum sg entries available for registration. |
| * |
| * Notes: |
| * Memory registeration page/sg lists must not exceed max_num_sg. |
| * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed |
| * max_num_sg * used_page_size. |
| * |
| */ |
| struct ib_mr *ib_alloc_mr(struct ib_pd *pd, |
| enum ib_mr_type mr_type, |
| u32 max_num_sg) |
| { |
| struct ib_mr *mr; |
| |
| if (!pd->device->alloc_mr) |
| return ERR_PTR(-ENOSYS); |
| |
| mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); |
| 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_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); |