drivers/infiniband/core/uverbs_marshall.c

   1 /*
   2  * Copyright (c) 2005 Intel Corporation.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/export.h>
  34 #include <rdma/ib_marshall.h>
  35
  36 void ib_copy_ah_attr_to_user(struct ib_uverbs_ah_attr *dst,
  37                              struct rdma_ah_attr *src)
  38 {
  39         memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved));
  40         dst->dlid                  = rdma_ah_get_dlid(src);
  41         dst->sl                    = rdma_ah_get_sl(src);
  42         dst->src_path_bits         = rdma_ah_get_path_bits(src);
  43         dst->static_rate           = rdma_ah_get_static_rate(src);
  44         dst->is_global             = rdma_ah_get_ah_flags(src) &
  45                                         IB_AH_GRH ? 1 : 0;
  46         if (dst->is_global) {
  47                 const struct ib_global_route *grh = rdma_ah_read_grh(src);
  48
  49                 memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
  50                 dst->grh.flow_label        = grh->flow_label;
  51                 dst->grh.sgid_index        = grh->sgid_index;
  52                 dst->grh.hop_limit         = grh->hop_limit;
  53                 dst->grh.traffic_class     = grh->traffic_class;
  54         }
  55         dst->port_num              = rdma_ah_get_port_num(src);
  56         dst->reserved              = 0;
  57 }
  58 EXPORT_SYMBOL(ib_copy_ah_attr_to_user);
  59
  60 void ib_copy_qp_attr_to_user(struct ib_uverbs_qp_attr *dst,
  61                              struct ib_qp_attr *src)
  62 {
  63         dst->qp_state           = src->qp_state;
  64         dst->cur_qp_state       = src->cur_qp_state;
  65         dst->path_mtu           = src->path_mtu;
  66         dst->path_mig_state     = src->path_mig_state;
  67         dst->qkey               = src->qkey;
  68         dst->rq_psn             = src->rq_psn;
  69         dst->sq_psn             = src->sq_psn;
  70         dst->dest_qp_num        = src->dest_qp_num;
  71         dst->qp_access_flags    = src->qp_access_flags;
  72
  73         dst->max_send_wr        = src->cap.max_send_wr;
  74         dst->max_recv_wr        = src->cap.max_recv_wr;
  75         dst->max_send_sge       = src->cap.max_send_sge;
  76         dst->max_recv_sge       = src->cap.max_recv_sge;
  77         dst->max_inline_data    = src->cap.max_inline_data;
  78
  79         ib_copy_ah_attr_to_user(&dst->ah_attr, &src->ah_attr);
  80         ib_copy_ah_attr_to_user(&dst->alt_ah_attr, &src->alt_ah_attr);
  81
  82         dst->pkey_index         = src->pkey_index;
  83         dst->alt_pkey_index     = src->alt_pkey_index;
  84         dst->en_sqd_async_notify = src->en_sqd_async_notify;
  85         dst->sq_draining        = src->sq_draining;
  86         dst->max_rd_atomic      = src->max_rd_atomic;
  87         dst->max_dest_rd_atomic = src->max_dest_rd_atomic;
  88         dst->min_rnr_timer      = src->min_rnr_timer;
  89         dst->port_num           = src->port_num;
  90         dst->timeout            = src->timeout;
  91         dst->retry_cnt          = src->retry_cnt;
  92         dst->rnr_retry          = src->rnr_retry;
  93         dst->alt_port_num       = src->alt_port_num;
  94         dst->alt_timeout        = src->alt_timeout;
  95         memset(dst->reserved, 0, sizeof(dst->reserved));
  96 }
  97 EXPORT_SYMBOL(ib_copy_qp_attr_to_user);
  98
  99 static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
 100                                        struct sa_path_rec *src)
 101 {
 102         memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
 103         memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));
 104
 105         dst->dlid               = htons(ntohl(sa_path_get_dlid(src)));
 106         dst->slid               = htons(ntohl(sa_path_get_slid(src)));
 107         dst->raw_traffic        = sa_path_get_raw_traffic(src);
 108         dst->flow_label         = src->flow_label;
 109         dst->hop_limit          = src->hop_limit;
 110         dst->traffic_class      = src->traffic_class;
 111         dst->reversible         = src->reversible;
 112         dst->numb_path          = src->numb_path;
 113         dst->pkey               = src->pkey;
 114         dst->sl                 = src->sl;
 115         dst->mtu_selector       = src->mtu_selector;
 116         dst->mtu                = src->mtu;
 117         dst->rate_selector      = src->rate_selector;
 118         dst->rate               = src->rate;
 119         dst->packet_life_time   = src->packet_life_time;
 120         dst->preference         = src->preference;
 121         dst->packet_life_time_selector = src->packet_life_time_selector;
 122 }
 123
 124 void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
 125                               struct sa_path_rec *src)
 126 {
 127         struct sa_path_rec rec;
 128
 129         if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
 130                 sa_convert_path_opa_to_ib(&rec, src);
 131                 __ib_copy_path_rec_to_user(dst, &rec);
 132                 return;
 133         }
 134         __ib_copy_path_rec_to_user(dst, src);
 135 }
 136 EXPORT_SYMBOL(ib_copy_path_rec_to_user);
 137
 138 void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
 139                                 struct ib_user_path_rec *src)
 140 {
 141         __be32 slid, dlid;
 142
 143         memset(dst, 0, sizeof(*dst));
 144         if ((ib_is_opa_gid((union ib_gid *)src->sgid)) ||
 145             (ib_is_opa_gid((union ib_gid *)src->dgid))) {
 146                 dst->rec_type = SA_PATH_REC_TYPE_OPA;
 147                 slid = htonl(opa_get_lid_from_gid((union ib_gid *)src->sgid));
 148                 dlid = htonl(opa_get_lid_from_gid((union ib_gid *)src->dgid));
 149         } else {
 150                 dst->rec_type = SA_PATH_REC_TYPE_IB;
 151                 slid = htonl(ntohs(src->slid));
 152                 dlid = htonl(ntohs(src->dlid));
 153         }
 154         memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
 155         memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);
 156
 157         sa_path_set_dlid(dst, dlid);
 158         sa_path_set_slid(dst, slid);
 159         sa_path_set_raw_traffic(dst, src->raw_traffic);
 160         dst->flow_label         = src->flow_label;
 161         dst->hop_limit          = src->hop_limit;
 162         dst->traffic_class      = src->traffic_class;
 163         dst->reversible         = src->reversible;
 164         dst->numb_path          = src->numb_path;
 165         dst->pkey               = src->pkey;
 166         dst->sl                 = src->sl;
 167         dst->mtu_selector       = src->mtu_selector;
 168         dst->mtu                = src->mtu;
 169         dst->rate_selector      = src->rate_selector;
 170         dst->rate               = src->rate;
 171         dst->packet_life_time   = src->packet_life_time;
 172         dst->preference         = src->preference;
 173         dst->packet_life_time_selector = src->packet_life_time_selector;
 174
 175         /* TODO: No need to set this */
 176         sa_path_set_dmac_zero(dst);
 177         sa_path_set_ndev(dst, NULL);
 178         sa_path_set_ifindex(dst, 0);
 179 }
 180 EXPORT_SYMBOL(ib_copy_path_rec_from_user);