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/*
* Copyright (c) 2020 Mellanox Technologies, Ltd. 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 <infiniband/cmd_write.h>
#include "ibverbs.h"
static int ibv_icmd_create_wq(struct ibv_context *context,
struct ibv_wq_init_attr *wq_init_attr,
struct ibv_wq *wq,
struct ibv_command_buffer *link)
{
DECLARE_FBCMD_BUFFER(cmdb, UVERBS_OBJECT_WQ, UVERBS_METHOD_WQ_CREATE, 13, link);
struct verbs_ex_private *priv = get_priv(context);
struct ib_uverbs_attr *handle;
uint32_t create_flags = 0;
uint32_t max_wr;
uint32_t max_sge;
uint32_t wq_num;
int ret;
wq->context = context;
wq->cq = wq_init_attr->cq;
wq->pd = wq_init_attr->pd;
wq->wq_type = wq_init_attr->wq_type;
handle = fill_attr_out_obj(cmdb, UVERBS_ATTR_CREATE_WQ_HANDLE);
fill_attr_in_uint64(cmdb, UVERBS_ATTR_CREATE_WQ_USER_HANDLE, (uintptr_t)wq);
fill_attr_in_obj(cmdb, UVERBS_ATTR_CREATE_WQ_PD_HANDLE, wq_init_attr->pd->handle);
fill_attr_in_obj(cmdb, UVERBS_ATTR_CREATE_WQ_CQ_HANDLE, wq_init_attr->cq->handle);
fill_attr_const_in(cmdb, UVERBS_ATTR_CREATE_WQ_TYPE, wq_init_attr->wq_type);
fill_attr_in_uint32(cmdb, UVERBS_ATTR_CREATE_WQ_MAX_WR, wq_init_attr->max_wr);
fill_attr_in_uint32(cmdb, UVERBS_ATTR_CREATE_WQ_MAX_SGE, wq_init_attr->max_sge);
fill_attr_in_fd(cmdb, UVERBS_ATTR_CREATE_WQ_EVENT_FD, wq->context->async_fd);
if (wq_init_attr->comp_mask & IBV_WQ_INIT_ATTR_FLAGS) {
if (wq_init_attr->create_flags & ~(IBV_WQ_FLAGS_RESERVED - 1)) {
errno = EOPNOTSUPP;
return errno;
}
create_flags = wq_init_attr->create_flags;
}
fill_attr_in_uint32(cmdb, UVERBS_ATTR_CREATE_WQ_FLAGS, create_flags);
fill_attr_out_ptr(cmdb, UVERBS_ATTR_CREATE_WQ_RESP_MAX_WR, &max_wr);
fill_attr_out_ptr(cmdb, UVERBS_ATTR_CREATE_WQ_RESP_MAX_SGE, &max_sge);
fill_attr_out_ptr(cmdb, UVERBS_ATTR_CREATE_WQ_RESP_WQ_NUM, &wq_num);
if (priv->imported)
fallback_require_ioctl(cmdb);
fallback_require_ex(cmdb);
switch (execute_ioctl_fallback(context, create_wq, cmdb, &ret)) {
case TRY_WRITE_EX: {
DECLARE_LEGACY_UHW_BUFS_EX(link,
IB_USER_VERBS_EX_CMD_CREATE_WQ);
*req = (struct ib_uverbs_ex_create_wq){
.user_handle = (uintptr_t)wq,
.pd_handle = wq_init_attr->pd->handle,
.cq_handle = wq_init_attr->cq->handle,
.max_wr = wq_init_attr->max_wr,
.max_sge = wq_init_attr->max_sge,
.wq_type = wq_init_attr->wq_type,
.create_flags = wq_init_attr->create_flags,
};
ret = execute_write_bufs_ex(
context, IB_USER_VERBS_EX_CMD_CREATE_WQ, req, resp);
if (ret)
return ret;
wq->handle = resp->wq_handle;
wq_init_attr->max_wr = resp->max_wr;
wq_init_attr->max_sge = resp->max_sge;
wq->wq_num = resp->wqn;
return 0;
}
case SUCCESS:
break;
default:
return ret;
}
wq->handle = read_attr_obj(UVERBS_ATTR_CREATE_WQ_HANDLE, handle);
wq->wq_num = wq_num;
wq_init_attr->max_wr = max_wr;
wq_init_attr->max_sge = max_sge;
return 0;
}
int ibv_cmd_create_wq(struct ibv_context *context,
struct ibv_wq_init_attr *wq_init_attr,
struct ibv_wq *wq,
struct ibv_create_wq *cmd,
size_t cmd_size,
struct ib_uverbs_ex_create_wq_resp *resp,
size_t resp_size)
{
DECLARE_CMD_BUFFER_COMPAT(cmdb, UVERBS_OBJECT_WQ,
UVERBS_METHOD_WQ_CREATE, cmd, cmd_size, resp,
resp_size);
if (wq_init_attr->comp_mask >= IBV_WQ_INIT_ATTR_RESERVED) {
errno = EINVAL;
return errno;
}
return ibv_icmd_create_wq(context, wq_init_attr, wq, cmdb);
}
int ibv_cmd_destroy_wq(struct ibv_wq *wq)
{
DECLARE_FBCMD_BUFFER(cmdb, UVERBS_OBJECT_WQ, UVERBS_METHOD_WQ_DESTROY, 2,
NULL);
struct ib_uverbs_ex_destroy_wq_resp resp;
int ret;
fill_attr_out_ptr(cmdb, UVERBS_ATTR_DESTROY_WQ_RESP, &resp.events_reported);
fill_attr_in_obj(cmdb, UVERBS_ATTR_DESTROY_WQ_HANDLE, wq->handle);
switch (execute_ioctl_fallback(wq->context, destroy_wq, cmdb, &ret)) {
case TRY_WRITE: {
struct ibv_destroy_wq req;
req.core_payload = (struct ib_uverbs_ex_destroy_wq){
.wq_handle = wq->handle,
};
ret = execute_cmd_write_ex(wq->context, IB_USER_VERBS_EX_CMD_DESTROY_WQ,
&req, sizeof(req), &resp, sizeof(resp));
break;
}
default:
break;
}
if (verbs_is_destroy_err(&ret))
return ret;
pthread_mutex_lock(&wq->mutex);
while (wq->events_completed != resp.events_reported)
pthread_cond_wait(&wq->cond, &wq->mutex);
pthread_mutex_unlock(&wq->mutex);
return 0;
}
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