/*
 * Copyright (c) 2005 Intel Corporation.  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/export.h>
#include <rdma/ib_marshall.h>

#define OPA_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
static int rdma_ah_conv_opa_to_ib(struct ib_device *dev,
                                  struct rdma_ah_attr *ib,
                                  struct rdma_ah_attr *opa)
{
        struct ib_port_attr port_attr;
        int ret = 0;

        /* Do structure copy and the over-write fields */
        *ib = *opa;

        ib->type = RDMA_AH_ATTR_TYPE_IB;
        rdma_ah_set_grh(ib, NULL, 0, 0, 1, 0);

        if (ib_query_port(dev, opa->port_num, &port_attr)) {
                /* Set to default subnet to indicate error */
                rdma_ah_set_subnet_prefix(ib, OPA_DEFAULT_GID_PREFIX);
                ret = -EINVAL;
        } else {
                rdma_ah_set_subnet_prefix(ib,
                                          cpu_to_be64(port_attr.subnet_prefix));
        }
        rdma_ah_set_interface_id(ib, OPA_MAKE_ID(rdma_ah_get_dlid(opa)));
        return ret;
}

void ib_copy_ah_attr_to_user(struct ib_device *device,
                             struct ib_uverbs_ah_attr *dst,
                             struct rdma_ah_attr *ah_attr)
{
        struct rdma_ah_attr *src = ah_attr;
        struct rdma_ah_attr conv_ah;

        memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved));

        if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
            (rdma_ah_get_dlid(ah_attr) > be16_to_cpu(IB_LID_PERMISSIVE)) &&
            (!rdma_ah_conv_opa_to_ib(device, &conv_ah, ah_attr)))
                src = &conv_ah;

        dst->dlid                  = rdma_ah_get_dlid(src);
        dst->sl                    = rdma_ah_get_sl(src);
        dst->src_path_bits         = rdma_ah_get_path_bits(src);
        dst->static_rate           = rdma_ah_get_static_rate(src);
        dst->is_global             = rdma_ah_get_ah_flags(src) &
                                        IB_AH_GRH ? 1 : 0;
        if (dst->is_global) {
                const struct ib_global_route *grh = rdma_ah_read_grh(src);

                memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
                dst->grh.flow_label        = grh->flow_label;
                dst->grh.sgid_index        = grh->sgid_index;
                dst->grh.hop_limit         = grh->hop_limit;
                dst->grh.traffic_class     = grh->traffic_class;
        }
        dst->port_num              = rdma_ah_get_port_num(src);
        dst->reserved              = 0;
}
EXPORT_SYMBOL(ib_copy_ah_attr_to_user);

void ib_copy_qp_attr_to_user(struct ib_device *device,
                             struct ib_uverbs_qp_attr *dst,
                             struct ib_qp_attr *src)
{
        dst->qp_state           = src->qp_state;
        dst->cur_qp_state       = src->cur_qp_state;
        dst->path_mtu           = src->path_mtu;
        dst->path_mig_state     = src->path_mig_state;
        dst->qkey               = src->qkey;
        dst->rq_psn             = src->rq_psn;
        dst->sq_psn             = src->sq_psn;
        dst->dest_qp_num        = src->dest_qp_num;
        dst->qp_access_flags    = src->qp_access_flags;

        dst->max_send_wr        = src->cap.max_send_wr;
        dst->max_recv_wr        = src->cap.max_recv_wr;
        dst->max_send_sge       = src->cap.max_send_sge;
        dst->max_recv_sge       = src->cap.max_recv_sge;
        dst->max_inline_data    = src->cap.max_inline_data;

        ib_copy_ah_attr_to_user(device, &dst->ah_attr, &src->ah_attr);
        ib_copy_ah_attr_to_user(device, &dst->alt_ah_attr, &src->alt_ah_attr);

        dst->pkey_index         = src->pkey_index;
        dst->alt_pkey_index     = src->alt_pkey_index;
        dst->en_sqd_async_notify = src->en_sqd_async_notify;
        dst->sq_draining        = src->sq_draining;
        dst->max_rd_atomic      = src->max_rd_atomic;
        dst->max_dest_rd_atomic = src->max_dest_rd_atomic;
        dst->min_rnr_timer      = src->min_rnr_timer;
        dst->port_num           = src->port_num;
        dst->timeout            = src->timeout;
        dst->retry_cnt          = src->retry_cnt;
        dst->rnr_retry          = src->rnr_retry;
        dst->alt_port_num       = src->alt_port_num;
        dst->alt_timeout        = src->alt_timeout;
        memset(dst->reserved, 0, sizeof(dst->reserved));
}
EXPORT_SYMBOL(ib_copy_qp_attr_to_user);

static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
                                       struct sa_path_rec *src)
{
        memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
        memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));

        dst->dlid               = htons(ntohl(sa_path_get_dlid(src)));
        dst->slid               = htons(ntohl(sa_path_get_slid(src)));
        dst->raw_traffic        = sa_path_get_raw_traffic(src);
        dst->flow_label         = src->flow_label;
        dst->hop_limit          = src->hop_limit;
        dst->traffic_class      = src->traffic_class;
        dst->reversible         = src->reversible;
        dst->numb_path          = src->numb_path;
        dst->pkey               = src->pkey;
        dst->sl                 = src->sl;
        dst->mtu_selector       = src->mtu_selector;
        dst->mtu                = src->mtu;
        dst->rate_selector      = src->rate_selector;
        dst->rate               = src->rate;
        dst->packet_life_time   = src->packet_life_time;
        dst->preference         = src->preference;
        dst->packet_life_time_selector = src->packet_life_time_selector;
}

void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
                              struct sa_path_rec *src)
{
        struct sa_path_rec rec;

        if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
                sa_convert_path_opa_to_ib(&rec, src);
                __ib_copy_path_rec_to_user(dst, &rec);
                return;
        }
        __ib_copy_path_rec_to_user(dst, src);
}
EXPORT_SYMBOL(ib_copy_path_rec_to_user);

void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
                                struct ib_user_path_rec *src)
{
        u32 slid, dlid;

        memset(dst, 0, sizeof(*dst));
        if ((ib_is_opa_gid((union ib_gid *)src->sgid)) ||
            (ib_is_opa_gid((union ib_gid *)src->dgid))) {
                dst->rec_type = SA_PATH_REC_TYPE_OPA;
                slid = opa_get_lid_from_gid((union ib_gid *)src->sgid);
                dlid = opa_get_lid_from_gid((union ib_gid *)src->dgid);
        } else {
                dst->rec_type = SA_PATH_REC_TYPE_IB;
                slid = ntohs(src->slid);
                dlid = ntohs(src->dlid);
        }
        memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
        memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);

        sa_path_set_dlid(dst, dlid);
        sa_path_set_slid(dst, slid);
        sa_path_set_raw_traffic(dst, src->raw_traffic);
        dst->flow_label         = src->flow_label;
        dst->hop_limit          = src->hop_limit;
        dst->traffic_class      = src->traffic_class;
        dst->reversible         = src->reversible;
        dst->numb_path          = src->numb_path;
        dst->pkey               = src->pkey;
        dst->sl                 = src->sl;
        dst->mtu_selector       = src->mtu_selector;
        dst->mtu                = src->mtu;
        dst->rate_selector      = src->rate_selector;
        dst->rate               = src->rate;
        dst->packet_life_time   = src->packet_life_time;
        dst->preference         = src->preference;
        dst->packet_life_time_selector = src->packet_life_time_selector;

        /* TODO: No need to set this */
        sa_path_set_dmac_zero(dst);
}
EXPORT_SYMBOL(ib_copy_path_rec_from_user);