diff options
Diffstat (limited to 'sys/contrib/rdma/rdma_verbs.c')
| -rw-r--r-- | sys/contrib/rdma/rdma_verbs.c | 822 |
1 files changed, 0 insertions, 822 deletions
diff --git a/sys/contrib/rdma/rdma_verbs.c b/sys/contrib/rdma/rdma_verbs.c deleted file mode 100644 index 9382107..0000000 --- a/sys/contrib/rdma/rdma_verbs.c +++ /dev/null @@ -1,822 +0,0 @@ -/* - * 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); -} |
