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third-party-mirror/linux-rdma/rdma-core/3b3389e0f7d7fa77baec6b4199efe6f3cd431a4e/./libibverbs/cmd.c
blob: d7078823989bd2a23bb0b7c6c09d084c6f4e484c [file]
/*
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 PathScale, Inc. All rights reserved.
* Copyright (c) 2006 Cisco Systems, Inc. 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 <config.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <alloca.h>
#include <string.h>
#include <infiniband/cmd_write.h>
#include "ibverbs.h"
#include <ccan/minmax.h>
bool verbs_allow_disassociate_destroy;
int ibv_cmd_alloc_pd(struct ibv_context *context, struct ibv_pd *pd,
struct ibv_alloc_pd *cmd, size_t cmd_size,
struct ib_uverbs_alloc_pd_resp *resp, size_t resp_size)
{
int ret;
ret = execute_cmd_write(context, IB_USER_VERBS_CMD_ALLOC_PD, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
pd->handle = resp->pd_handle;
pd->context = context;
return 0;
}
int ibv_cmd_open_xrcd(struct ibv_context *context, struct verbs_xrcd *xrcd,
int vxrcd_size,
struct ibv_xrcd_init_attr *attr,
struct ibv_open_xrcd *cmd, size_t cmd_size,
struct ib_uverbs_open_xrcd_resp *resp, size_t resp_size)
{
int ret;
if (attr->comp_mask >= IBV_XRCD_INIT_ATTR_RESERVED)
return EOPNOTSUPP;
if (!(attr->comp_mask & IBV_XRCD_INIT_ATTR_FD) ||
!(attr->comp_mask & IBV_XRCD_INIT_ATTR_OFLAGS))
return EINVAL;
cmd->fd = attr->fd;
cmd->oflags = attr->oflags;
ret = execute_cmd_write(context, IB_USER_VERBS_CMD_OPEN_XRCD, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
xrcd->xrcd.context = context;
xrcd->comp_mask = 0;
if (vext_field_avail(struct verbs_xrcd, handle, vxrcd_size)) {
xrcd->comp_mask = VERBS_XRCD_HANDLE;
xrcd->handle = resp->xrcd_handle;
}
return 0;
}
int ibv_cmd_reg_mr(struct ibv_pd *pd, void *addr, size_t length,
uint64_t hca_va, int access,
struct verbs_mr *vmr, struct ibv_reg_mr *cmd,
size_t cmd_size,
struct ib_uverbs_reg_mr_resp *resp, size_t resp_size)
{
int ret;
cmd->start = (uintptr_t) addr;
cmd->length = length;
/* On demand access and entire address space means implicit.
* In that case set the value in the command to what kernel expects.
*/
if (access & IBV_ACCESS_ON_DEMAND) {
if (length == SIZE_MAX && addr) {
errno = EINVAL;
return EINVAL;
}
if (length == SIZE_MAX)
cmd->length = UINT64_MAX;
}
cmd->hca_va = hca_va;
cmd->pd_handle = pd->handle;
cmd->access_flags = access;
ret = execute_cmd_write(pd->context, IB_USER_VERBS_CMD_REG_MR, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
vmr->ibv_mr.handle = resp->mr_handle;
vmr->ibv_mr.lkey = resp->lkey;
vmr->ibv_mr.rkey = resp->rkey;
vmr->ibv_mr.context = pd->context;
vmr->mr_type = IBV_MR_TYPE_MR;
vmr->access = access;
return 0;
}
int ibv_cmd_rereg_mr(struct verbs_mr *vmr, uint32_t flags, void *addr,
size_t length, uint64_t hca_va, int access,
struct ibv_pd *pd, struct ibv_rereg_mr *cmd,
size_t cmd_sz, struct ib_uverbs_rereg_mr_resp *resp,
size_t resp_sz)
{
int ret;
cmd->mr_handle = vmr->ibv_mr.handle;
cmd->flags = flags;
cmd->start = (uintptr_t)addr;
cmd->length = length;
cmd->hca_va = hca_va;
cmd->pd_handle = (flags & IBV_REREG_MR_CHANGE_PD) ? pd->handle : 0;
cmd->access_flags = access;
ret = execute_cmd_write(vmr->ibv_mr.context, IB_USER_VERBS_CMD_REREG_MR,
cmd, cmd_sz, resp, resp_sz);
if (ret)
return ret;
vmr->ibv_mr.lkey = resp->lkey;
vmr->ibv_mr.rkey = resp->rkey;
if (flags & IBV_REREG_MR_CHANGE_PD)
vmr->ibv_mr.context = pd->context;
return 0;
}
int ibv_cmd_alloc_mw(struct ibv_pd *pd, enum ibv_mw_type type,
struct ibv_mw *mw, struct ibv_alloc_mw *cmd,
size_t cmd_size,
struct ib_uverbs_alloc_mw_resp *resp, size_t resp_size)
{
int ret;
cmd->pd_handle = pd->handle;
cmd->mw_type = type;
memset(cmd->reserved, 0, sizeof(cmd->reserved));
ret = execute_cmd_write(pd->context, IB_USER_VERBS_CMD_ALLOC_MW, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
mw->context = pd->context;
mw->pd = pd;
mw->rkey = resp->rkey;
mw->handle = resp->mw_handle;
mw->type = type;
return 0;
}
int ibv_cmd_poll_cq(struct ibv_cq *ibcq, int ne, struct ibv_wc *wc)
{
struct ibv_poll_cq cmd;
struct ib_uverbs_poll_cq_resp *resp;
int i;
int rsize;
int ret;
rsize = sizeof *resp + ne * sizeof(struct ib_uverbs_wc);
resp = malloc(rsize);
if (!resp)
return -1;
cmd.cq_handle = ibcq->handle;
cmd.ne = ne;
ret = execute_cmd_write_no_uhw(ibcq->context, IB_USER_VERBS_CMD_POLL_CQ,
&cmd, sizeof(cmd), resp, rsize);
if (ret) {
ret = -1;
goto out;
}
for (i = 0; i < resp->count; i++) {
wc[i].wr_id = resp->wc[i].wr_id;
wc[i].status = resp->wc[i].status;
wc[i].opcode = resp->wc[i].opcode;
wc[i].vendor_err = resp->wc[i].vendor_err;
wc[i].byte_len = resp->wc[i].byte_len;
wc[i].imm_data = resp->wc[i].ex.imm_data;
wc[i].qp_num = resp->wc[i].qp_num;
wc[i].src_qp = resp->wc[i].src_qp;
wc[i].wc_flags = resp->wc[i].wc_flags;
wc[i].pkey_index = resp->wc[i].pkey_index;
wc[i].slid = resp->wc[i].slid;
wc[i].sl = resp->wc[i].sl;
wc[i].dlid_path_bits = resp->wc[i].dlid_path_bits;
}
ret = resp->count;
out:
free(resp);
return ret;
}
int ibv_cmd_req_notify_cq(struct ibv_cq *ibcq, int solicited_only)
{
struct ibv_req_notify_cq req;
req.core_payload = (struct ib_uverbs_req_notify_cq){
.cq_handle = ibcq->handle,
.solicited_only = !!solicited_only,
};
return execute_cmd_write_req(ibcq->context,
IB_USER_VERBS_CMD_REQ_NOTIFY_CQ, &req,
sizeof(req));
}
int ibv_cmd_resize_cq(struct ibv_cq *cq, int cqe,
struct ibv_resize_cq *cmd, size_t cmd_size,
struct ib_uverbs_resize_cq_resp *resp, size_t resp_size)
{
int ret;
cmd->cq_handle = cq->handle;
cmd->cqe = cqe;
ret = execute_cmd_write(cq->context, IB_USER_VERBS_CMD_RESIZE_CQ, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
cq->cqe = resp->cqe;
return 0;
}
static int ibv_cmd_modify_srq_v3(struct ibv_srq *srq,
struct ibv_srq_attr *srq_attr,
int srq_attr_mask,
struct ibv_modify_srq *new_cmd,
size_t new_cmd_size)
{
struct ibv_modify_srq_v3 *cmd;
size_t cmd_size;
cmd_size = sizeof *cmd + new_cmd_size - sizeof *new_cmd;
cmd = alloca(cmd_size);
memcpy(cmd + 1, new_cmd + 1, new_cmd_size - sizeof *new_cmd);
cmd->core_payload = (struct ib_uverbs_modify_srq_v3){
.srq_handle = srq->handle,
.attr_mask = srq_attr_mask,
.max_wr = srq_attr->max_wr,
.srq_limit = srq_attr->srq_limit,
};
return execute_cmd_write_req(
srq->context, IB_USER_VERBS_CMD_MODIFY_SRQ_V3, cmd, cmd_size);
}
int ibv_cmd_modify_srq(struct ibv_srq *srq,
struct ibv_srq_attr *srq_attr,
int srq_attr_mask,
struct ibv_modify_srq *cmd, size_t cmd_size)
{
if (abi_ver == 3)
return ibv_cmd_modify_srq_v3(srq, srq_attr, srq_attr_mask,
cmd, cmd_size);
cmd->srq_handle = srq->handle;
cmd->attr_mask = srq_attr_mask;
cmd->max_wr = srq_attr->max_wr;
cmd->srq_limit = srq_attr->srq_limit;
return execute_cmd_write_req(srq->context, IB_USER_VERBS_CMD_MODIFY_SRQ,
cmd, cmd_size);
}
int ibv_cmd_query_srq(struct ibv_srq *srq, struct ibv_srq_attr *srq_attr,
struct ibv_query_srq *cmd, size_t cmd_size)
{
struct ib_uverbs_query_srq_resp resp;
int ret;
cmd->srq_handle = srq->handle;
cmd->reserved = 0;
ret = execute_cmd_write(srq->context, IB_USER_VERBS_CMD_QUERY_SRQ, cmd,
cmd_size, &resp, sizeof(resp));
if (ret)
return ret;
srq_attr->max_wr = resp.max_wr;
srq_attr->max_sge = resp.max_sge;
srq_attr->srq_limit = resp.srq_limit;
return 0;
}
enum {
CREATE_QP_EX2_SUP_CREATE_FLAGS = IBV_QP_CREATE_BLOCK_SELF_MCAST_LB |
IBV_QP_CREATE_SCATTER_FCS |
IBV_QP_CREATE_CVLAN_STRIPPING |
IBV_QP_CREATE_SOURCE_QPN |
IBV_QP_CREATE_PCI_WRITE_END_PADDING,
};
int ibv_cmd_open_qp(struct ibv_context *context, struct verbs_qp *qp,
int vqp_sz,
struct ibv_qp_open_attr *attr,
struct ibv_open_qp *cmd, size_t cmd_size,
struct ib_uverbs_create_qp_resp *resp, size_t resp_size)
{
struct verbs_xrcd *xrcd;
int ret;
if (attr->comp_mask >= IBV_QP_OPEN_ATTR_RESERVED)
return EOPNOTSUPP;
if (!(attr->comp_mask & IBV_QP_OPEN_ATTR_XRCD) ||
!(attr->comp_mask & IBV_QP_OPEN_ATTR_NUM) ||
!(attr->comp_mask & IBV_QP_OPEN_ATTR_TYPE))
return EINVAL;
xrcd = container_of(attr->xrcd, struct verbs_xrcd, xrcd);
cmd->user_handle = (uintptr_t) qp;
cmd->pd_handle = xrcd->handle;
cmd->qpn = attr->qp_num;
cmd->qp_type = attr->qp_type;
ret = execute_cmd_write(context, IB_USER_VERBS_CMD_OPEN_QP, cmd,
cmd_size, resp, resp_size);
if (ret)
return ret;
qp->qp.handle = resp->qp_handle;
qp->qp.context = context;
qp->qp.qp_context = attr->qp_context;
qp->qp.pd = NULL;
qp->qp.send_cq = NULL;
qp->qp.recv_cq = NULL;
qp->qp.srq = NULL;
qp->qp.qp_num = attr->qp_num;
qp->qp.qp_type = attr->qp_type;
qp->qp.state = IBV_QPS_UNKNOWN;
qp->qp.events_completed = 0;
pthread_mutex_init(&qp->qp.mutex, NULL);
pthread_cond_init(&qp->qp.cond, NULL);
qp->comp_mask = 0;
if (vext_field_avail(struct verbs_qp, xrcd, vqp_sz)) {
qp->comp_mask = VERBS_QP_XRCD;
qp->xrcd = xrcd;
}
return 0;
}
int ibv_cmd_query_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
int attr_mask,
struct ibv_qp_init_attr *init_attr,
struct ibv_query_qp *cmd, size_t cmd_size)
{
struct ib_uverbs_query_qp_resp resp;
int ret;
/*
* Starting with IBV_QP_RATE_LIMIT the attribute must go through the
* _ex path.
*/
if (attr_mask & ~(IBV_QP_RATE_LIMIT - 1))
return EOPNOTSUPP;
cmd->qp_handle = qp->handle;
cmd->attr_mask = attr_mask;
ret = execute_cmd_write(qp->context, IB_USER_VERBS_CMD_QUERY_QP, cmd,
cmd_size, &resp, sizeof(resp));
if (ret)
return ret;
attr->qkey = resp.qkey;
attr->rq_psn = resp.rq_psn;
attr->sq_psn = resp.sq_psn;
attr->dest_qp_num = resp.dest_qp_num;
attr->qp_access_flags = resp.qp_access_flags;
attr->pkey_index = resp.pkey_index;
attr->alt_pkey_index = resp.alt_pkey_index;
attr->qp_state = resp.qp_state;
attr->cur_qp_state = resp.cur_qp_state;
attr->path_mtu = resp.path_mtu;
attr->path_mig_state = resp.path_mig_state;
attr->sq_draining = resp.sq_draining;
attr->max_rd_atomic = resp.max_rd_atomic;
attr->max_dest_rd_atomic = resp.max_dest_rd_atomic;
attr->min_rnr_timer = resp.min_rnr_timer;
attr->port_num = resp.port_num;
attr->timeout = resp.timeout;
attr->retry_cnt = resp.retry_cnt;
attr->rnr_retry = resp.rnr_retry;
attr->alt_port_num = resp.alt_port_num;
attr->alt_timeout = resp.alt_timeout;
attr->cap.max_send_wr = resp.max_send_wr;
attr->cap.max_recv_wr = resp.max_recv_wr;
attr->cap.max_send_sge = resp.max_send_sge;
attr->cap.max_recv_sge = resp.max_recv_sge;
attr->cap.max_inline_data = resp.max_inline_data;
memcpy(attr->ah_attr.grh.dgid.raw, resp.dest.dgid, 16);
attr->ah_attr.grh.flow_label = resp.dest.flow_label;
attr->ah_attr.dlid = resp.dest.dlid;
attr->ah_attr.grh.sgid_index = resp.dest.sgid_index;
attr->ah_attr.grh.hop_limit = resp.dest.hop_limit;
attr->ah_attr.grh.traffic_class = resp.dest.traffic_class;
attr->ah_attr.sl = resp.dest.sl;
attr->ah_attr.src_path_bits = resp.dest.src_path_bits;
attr->ah_attr.static_rate = resp.dest.static_rate;
attr->ah_attr.is_global = resp.dest.is_global;
attr->ah_attr.port_num = resp.dest.port_num;
memcpy(attr->alt_ah_attr.grh.dgid.raw, resp.alt_dest.dgid, 16);
attr->alt_ah_attr.grh.flow_label = resp.alt_dest.flow_label;
attr->alt_ah_attr.dlid = resp.alt_dest.dlid;
attr->alt_ah_attr.grh.sgid_index = resp.alt_dest.sgid_index;
attr->alt_ah_attr.grh.hop_limit = resp.alt_dest.hop_limit;
attr->alt_ah_attr.grh.traffic_class = resp.alt_dest.traffic_class;
attr->alt_ah_attr.sl = resp.alt_dest.sl;
attr->alt_ah_attr.src_path_bits = resp.alt_dest.src_path_bits;
attr->alt_ah_attr.static_rate = resp.alt_dest.static_rate;
attr->alt_ah_attr.is_global = resp.alt_dest.is_global;
attr->alt_ah_attr.port_num = resp.alt_dest.port_num;
init_attr->qp_context = qp->qp_context;
init_attr->send_cq = qp->send_cq;
init_attr->recv_cq = qp->recv_cq;
init_attr->srq = qp->srq;
init_attr->qp_type = qp->qp_type;
init_attr->cap.max_send_wr = resp.max_send_wr;
init_attr->cap.max_recv_wr = resp.max_recv_wr;
init_attr->cap.max_send_sge = resp.max_send_sge;
init_attr->cap.max_recv_sge = resp.max_recv_sge;
init_attr->cap.max_inline_data = resp.max_inline_data;
init_attr->sq_sig_all = resp.sq_sig_all;
return 0;
}
static void copy_modify_qp_fields(struct ibv_qp *qp, struct ibv_qp_attr *attr,
int attr_mask,
struct ib_uverbs_modify_qp *cmd)
{
cmd->qp_handle = qp->handle;
cmd->attr_mask = attr_mask;
if (attr_mask & IBV_QP_STATE)
cmd->qp_state = attr->qp_state;
if (attr_mask & IBV_QP_CUR_STATE)
cmd->cur_qp_state = attr->cur_qp_state;
if (attr_mask & IBV_QP_EN_SQD_ASYNC_NOTIFY)
cmd->en_sqd_async_notify = attr->en_sqd_async_notify;
if (attr_mask & IBV_QP_ACCESS_FLAGS)
cmd->qp_access_flags = attr->qp_access_flags;
if (attr_mask & IBV_QP_PKEY_INDEX)
cmd->pkey_index = attr->pkey_index;
if (attr_mask & IBV_QP_PORT)
cmd->port_num = attr->port_num;
if (attr_mask & IBV_QP_QKEY)
cmd->qkey = attr->qkey;
if (attr_mask & IBV_QP_AV) {
memcpy(cmd->dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
cmd->dest.flow_label = attr->ah_attr.grh.flow_label;
cmd->dest.dlid = attr->ah_attr.dlid;
cmd->dest.reserved = 0;
cmd->dest.sgid_index = attr->ah_attr.grh.sgid_index;
cmd->dest.hop_limit = attr->ah_attr.grh.hop_limit;
cmd->dest.traffic_class = attr->ah_attr.grh.traffic_class;
cmd->dest.sl = attr->ah_attr.sl;
cmd->dest.src_path_bits = attr->ah_attr.src_path_bits;
cmd->dest.static_rate = attr->ah_attr.static_rate;
cmd->dest.is_global = attr->ah_attr.is_global;
cmd->dest.port_num = attr->ah_attr.port_num;
}
if (attr_mask & IBV_QP_PATH_MTU)
cmd->path_mtu = attr->path_mtu;
if (attr_mask & IBV_QP_TIMEOUT)
cmd->timeout = attr->timeout;
if (attr_mask & IBV_QP_RETRY_CNT)
cmd->retry_cnt = attr->retry_cnt;
if (attr_mask & IBV_QP_RNR_RETRY)
cmd->rnr_retry = attr->rnr_retry;
if (attr_mask & IBV_QP_RQ_PSN)
cmd->rq_psn = attr->rq_psn;
if (attr_mask & IBV_QP_MAX_QP_RD_ATOMIC)
cmd->max_rd_atomic = attr->max_rd_atomic;
if (attr_mask & IBV_QP_ALT_PATH) {
cmd->alt_pkey_index = attr->alt_pkey_index;
cmd->alt_port_num = attr->alt_port_num;
cmd->alt_timeout = attr->alt_timeout;
memcpy(cmd->alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
cmd->alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
cmd->alt_dest.dlid = attr->alt_ah_attr.dlid;
cmd->alt_dest.reserved = 0;
cmd->alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
cmd->alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
cmd->alt_dest.traffic_class =
attr->alt_ah_attr.grh.traffic_class;
cmd->alt_dest.sl = attr->alt_ah_attr.sl;
cmd->alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
cmd->alt_dest.static_rate = attr->alt_ah_attr.static_rate;
cmd->alt_dest.is_global = attr->alt_ah_attr.is_global;
cmd->alt_dest.port_num = attr->alt_ah_attr.port_num;
}
if (attr_mask & IBV_QP_MIN_RNR_TIMER)
cmd->min_rnr_timer = attr->min_rnr_timer;
if (attr_mask & IBV_QP_SQ_PSN)
cmd->sq_psn = attr->sq_psn;
if (attr_mask & IBV_QP_MAX_DEST_RD_ATOMIC)
cmd->max_dest_rd_atomic = attr->max_dest_rd_atomic;
if (attr_mask & IBV_QP_PATH_MIG_STATE)
cmd->path_mig_state = attr->path_mig_state;
if (attr_mask & IBV_QP_DEST_QPN)
cmd->dest_qp_num = attr->dest_qp_num;
cmd->reserved[0] = cmd->reserved[1] = 0;
}
int ibv_cmd_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
int attr_mask,
struct ibv_modify_qp *cmd, size_t cmd_size)
{
/*
* Starting with IBV_QP_RATE_LIMIT the attribute must go through the
* _ex path.
*/
if (attr_mask & ~(IBV_QP_RATE_LIMIT - 1))
return EOPNOTSUPP;
copy_modify_qp_fields(qp, attr, attr_mask, &cmd->core_payload);
return execute_cmd_write_req(qp->context, IB_USER_VERBS_CMD_MODIFY_QP,
cmd, cmd_size);
}
int ibv_cmd_modify_qp_ex(struct ibv_qp *qp, struct ibv_qp_attr *attr,
int attr_mask, struct ibv_modify_qp_ex *cmd,
size_t cmd_size,
struct ib_uverbs_ex_modify_qp_resp *resp,
size_t resp_size)
{
copy_modify_qp_fields(qp, attr, attr_mask, &cmd->base);
if (attr_mask & IBV_QP_RATE_LIMIT) {
if (cmd_size >= offsetof(struct ibv_modify_qp_ex, rate_limit) +
sizeof(cmd->rate_limit))
cmd->rate_limit = attr->rate_limit;
else
return EINVAL;
}
return execute_cmd_write_ex(qp->context, IB_USER_VERBS_EX_CMD_MODIFY_QP,
cmd, cmd_size, resp, resp_size);
}
int ibv_cmd_post_send(struct ibv_qp *ibqp, struct ibv_send_wr *wr,
struct ibv_send_wr **bad_wr)
{
struct ibv_post_send *cmd;
struct ib_uverbs_post_send_resp resp;
struct ibv_send_wr *i;
struct ib_uverbs_send_wr *n, *tmp;
struct ibv_sge *s;
unsigned wr_count = 0;
unsigned sge_count = 0;
int cmd_size;
int ret;
for (i = wr; i; i = i->next) {
wr_count++;
sge_count += i->num_sge;
}
cmd_size = sizeof *cmd + wr_count * sizeof *n + sge_count * sizeof *s;
cmd = alloca(cmd_size);
cmd->qp_handle = ibqp->handle;
cmd->wr_count = wr_count;
cmd->sge_count = sge_count;
cmd->wqe_size = sizeof *n;
n = (struct ib_uverbs_send_wr *) ((void *) cmd + sizeof *cmd);
s = (struct ibv_sge *) (n + wr_count);
tmp = n;
for (i = wr; i; i = i->next) {
tmp->wr_id = i->wr_id;
tmp->num_sge = i->num_sge;
tmp->opcode = i->opcode;
tmp->send_flags = i->send_flags;
tmp->ex.imm_data = i->imm_data;
if (ibqp->qp_type == IBV_QPT_UD) {
tmp->wr.ud.ah = i->wr.ud.ah->handle;
tmp->wr.ud.remote_qpn = i->wr.ud.remote_qpn;
tmp->wr.ud.remote_qkey = i->wr.ud.remote_qkey;
} else {
switch (i->opcode) {
case IBV_WR_RDMA_WRITE:
case IBV_WR_RDMA_WRITE_WITH_IMM:
case IBV_WR_RDMA_READ:
tmp->wr.rdma.remote_addr =
i->wr.rdma.remote_addr;
tmp->wr.rdma.rkey = i->wr.rdma.rkey;
break;
case IBV_WR_ATOMIC_CMP_AND_SWP:
case IBV_WR_ATOMIC_FETCH_AND_ADD:
tmp->wr.atomic.remote_addr =
i->wr.atomic.remote_addr;
tmp->wr.atomic.compare_add =
i->wr.atomic.compare_add;
tmp->wr.atomic.swap = i->wr.atomic.swap;
tmp->wr.atomic.rkey = i->wr.atomic.rkey;
break;
default:
break;
}
}
if (tmp->num_sge) {
memcpy(s, i->sg_list, tmp->num_sge * sizeof *s);
s += tmp->num_sge;
}
tmp++;
}
resp.bad_wr = 0;
ret = execute_cmd_write_no_uhw(ibqp->context,
IB_USER_VERBS_CMD_POST_SEND, cmd,
cmd_size, &resp, sizeof(resp));
wr_count = resp.bad_wr;
if (wr_count) {
i = wr;
while (--wr_count)
i = i->next;
*bad_wr = i;
} else if (ret)
*bad_wr = wr;
return ret;
}
int ibv_cmd_post_recv(struct ibv_qp *ibqp, struct ibv_recv_wr *wr,
struct ibv_recv_wr **bad_wr)
{
struct ibv_post_recv *cmd;
struct ib_uverbs_post_recv_resp resp;
struct ibv_recv_wr *i;
struct ib_uverbs_recv_wr *n, *tmp;
struct ibv_sge *s;
unsigned wr_count = 0;
unsigned sge_count = 0;
int cmd_size;
int ret;
for (i = wr; i; i = i->next) {
wr_count++;
sge_count += i->num_sge;
}
cmd_size = sizeof *cmd + wr_count * sizeof *n + sge_count * sizeof *s;
cmd = alloca(cmd_size);
cmd->qp_handle = ibqp->handle;
cmd->wr_count = wr_count;
cmd->sge_count = sge_count;
cmd->wqe_size = sizeof *n;
n = (struct ib_uverbs_recv_wr *) ((void *) cmd + sizeof *cmd);
s = (struct ibv_sge *) (n + wr_count);
tmp = n;
for (i = wr; i; i = i->next) {
tmp->wr_id = i->wr_id;
tmp->num_sge = i->num_sge;
if (tmp->num_sge) {
memcpy(s, i->sg_list, tmp->num_sge * sizeof *s);
s += tmp->num_sge;
}
tmp++;
}
resp.bad_wr = 0;
ret = execute_cmd_write_no_uhw(ibqp->context,
IB_USER_VERBS_CMD_POST_RECV, cmd,
cmd_size, &resp, sizeof(resp));
wr_count = resp.bad_wr;
if (wr_count) {
i = wr;
while (--wr_count)
i = i->next;
*bad_wr = i;
} else if (ret)
*bad_wr = wr;
return ret;
}
int ibv_cmd_post_srq_recv(struct ibv_srq *srq, struct ibv_recv_wr *wr,
struct ibv_recv_wr **bad_wr)
{
struct ibv_post_srq_recv *cmd;
struct ib_uverbs_post_srq_recv_resp resp;
struct ibv_recv_wr *i;
struct ib_uverbs_recv_wr *n, *tmp;
struct ibv_sge *s;
unsigned wr_count = 0;
unsigned sge_count = 0;
int cmd_size;
int ret;
for (i = wr; i; i = i->next) {
wr_count++;
sge_count += i->num_sge;
}
cmd_size = sizeof *cmd + wr_count * sizeof *n + sge_count * sizeof *s;
cmd = alloca(cmd_size);
cmd->srq_handle = srq->handle;
cmd->wr_count = wr_count;
cmd->sge_count = sge_count;
cmd->wqe_size = sizeof *n;
n = (struct ib_uverbs_recv_wr *) ((void *) cmd + sizeof *cmd);
s = (struct ibv_sge *) (n + wr_count);
tmp = n;
for (i = wr; i; i = i->next) {
tmp->wr_id = i->wr_id;
tmp->num_sge = i->num_sge;
if (tmp->num_sge) {
memcpy(s, i->sg_list, tmp->num_sge * sizeof *s);
s += tmp->num_sge;
}
tmp++;
}
resp.bad_wr = 0;
ret = execute_cmd_write_no_uhw(srq->context,
IB_USER_VERBS_CMD_POST_SRQ_RECV, cmd,
cmd_size, &resp, sizeof(resp));
wr_count = resp.bad_wr;
if (wr_count) {
i = wr;
while (--wr_count)
i = i->next;
*bad_wr = i;
} else if (ret)
*bad_wr = wr;
return ret;
}
int ibv_cmd_create_ah(struct ibv_pd *pd, struct ibv_ah *ah,
struct ibv_ah_attr *attr,
struct ib_uverbs_create_ah_resp *resp,
size_t resp_size)
{
struct ibv_create_ah cmd;
int ret;
cmd.user_handle = (uintptr_t) ah;
cmd.pd_handle = pd->handle;
cmd.reserved = 0;
cmd.attr.dlid = attr->dlid;
cmd.attr.sl = attr->sl;
cmd.attr.src_path_bits = attr->src_path_bits;
cmd.attr.static_rate = attr->static_rate;
cmd.attr.is_global = attr->is_global;
cmd.attr.port_num = attr->port_num;
cmd.attr.reserved = 0;
cmd.attr.grh.flow_label = attr->grh.flow_label;
cmd.attr.grh.sgid_index = attr->grh.sgid_index;
cmd.attr.grh.hop_limit = attr->grh.hop_limit;
cmd.attr.grh.traffic_class = attr->grh.traffic_class;
cmd.attr.grh.reserved = 0;
memcpy(cmd.attr.grh.dgid, attr->grh.dgid.raw, 16);
ret = execute_cmd_write(pd->context, IB_USER_VERBS_CMD_CREATE_AH, &cmd,
sizeof(cmd), resp, resp_size);
if (ret)
return ret;
ah->handle = resp->ah_handle;
ah->context = pd->context;
return 0;
}
int ibv_cmd_attach_mcast(struct ibv_qp *qp, const union ibv_gid *gid, uint16_t lid)
{
struct ibv_attach_mcast req;
req.core_payload = (struct ib_uverbs_attach_mcast){
.qp_handle = qp->handle,
.mlid = lid,
};
memcpy(req.gid, gid->raw, sizeof(req.gid));
return execute_cmd_write_req(
qp->context, IB_USER_VERBS_CMD_ATTACH_MCAST, &req, sizeof(req));
}
int ibv_cmd_detach_mcast(struct ibv_qp *qp, const union ibv_gid *gid, uint16_t lid)
{
struct ibv_detach_mcast req;
int ret;
req.core_payload = (struct ib_uverbs_detach_mcast){
.qp_handle = qp->handle,
.mlid = lid,
};
memcpy(req.gid, gid->raw, sizeof(req.gid));
ret = execute_cmd_write_req(qp->context, IB_USER_VERBS_CMD_DETACH_MCAST,
&req, sizeof(req));
if (verbs_is_destroy_err(&ret))
return ret;
return 0;
}
static int buffer_is_zero(char *addr, ssize_t size)
{
return addr[0] == 0 && !memcmp(addr, addr + 1, size - 1);
}
static int get_filters_size(struct ibv_flow_spec *ib_spec,
struct ibv_kern_spec *kern_spec,
int *ib_filter_size, int *kern_filter_size,
enum ibv_flow_spec_type type)
{
void *ib_spec_filter_mask;
int curr_kern_filter_size;
int min_filter_size;
*ib_filter_size = (ib_spec->hdr.size - sizeof(ib_spec->hdr)) / 2;
switch (type) {
case IBV_FLOW_SPEC_IPV4_EXT:
min_filter_size =
offsetof(struct ib_uverbs_flow_ipv4_filter, flags) +
sizeof(kern_spec->ipv4_ext.mask.flags);
curr_kern_filter_size = min_filter_size;
ib_spec_filter_mask = (void *)&ib_spec->ipv4_ext.val +
*ib_filter_size;
break;
case IBV_FLOW_SPEC_IPV6:
min_filter_size =
offsetof(struct ib_uverbs_flow_ipv6_filter, hop_limit) +
sizeof(kern_spec->ipv6.mask.hop_limit);
curr_kern_filter_size = min_filter_size;
ib_spec_filter_mask = (void *)&ib_spec->ipv6.val +
*ib_filter_size;
break;
case IBV_FLOW_SPEC_VXLAN_TUNNEL:
min_filter_size =
offsetof(struct ib_uverbs_flow_tunnel_filter,
tunnel_id) +
sizeof(kern_spec->tunnel.mask.tunnel_id);
curr_kern_filter_size = min_filter_size;
ib_spec_filter_mask = (void *)&ib_spec->tunnel.val +
*ib_filter_size;
break;
default:
return EINVAL;
}
if (*ib_filter_size < min_filter_size)
return EINVAL;
if (*ib_filter_size > curr_kern_filter_size &&
!buffer_is_zero(ib_spec_filter_mask + curr_kern_filter_size,
*ib_filter_size - curr_kern_filter_size))
return EOPNOTSUPP;
*kern_filter_size = min_t(int, curr_kern_filter_size, *ib_filter_size);
return 0;
}
static int ib_spec_to_kern_spec(struct ibv_flow_spec *ib_spec,
struct ibv_kern_spec *kern_spec)
{
int kern_filter_size;
int ib_filter_size;
int ret;
kern_spec->hdr.type = ib_spec->hdr.type;
switch (kern_spec->hdr.type) {
case IBV_FLOW_SPEC_ETH:
case IBV_FLOW_SPEC_ETH | IBV_FLOW_SPEC_INNER:
kern_spec->eth.size = sizeof(struct ib_uverbs_flow_spec_eth);
memcpy(&kern_spec->eth.val, &ib_spec->eth.val,
sizeof(struct ibv_flow_eth_filter));
memcpy(&kern_spec->eth.mask, &ib_spec->eth.mask,
sizeof(struct ibv_flow_eth_filter));
break;
case IBV_FLOW_SPEC_IPV4:
case IBV_FLOW_SPEC_IPV4 | IBV_FLOW_SPEC_INNER:
kern_spec->ipv4.size = sizeof(struct ibv_kern_spec_ipv4);
memcpy(&kern_spec->ipv4.val, &ib_spec->ipv4.val,
sizeof(struct ibv_flow_ipv4_filter));
memcpy(&kern_spec->ipv4.mask, &ib_spec->ipv4.mask,
sizeof(struct ibv_flow_ipv4_filter));
break;
case IBV_FLOW_SPEC_IPV4_EXT:
case IBV_FLOW_SPEC_IPV4_EXT | IBV_FLOW_SPEC_INNER:
ret = get_filters_size(ib_spec, kern_spec,
&ib_filter_size, &kern_filter_size,
IBV_FLOW_SPEC_IPV4_EXT);
if (ret)
return ret;
kern_spec->hdr.type = IBV_FLOW_SPEC_IPV4 |
(IBV_FLOW_SPEC_INNER & ib_spec->hdr.type);
kern_spec->ipv4_ext.size = sizeof(struct
ib_uverbs_flow_spec_ipv4);
memcpy(&kern_spec->ipv4_ext.val, &ib_spec->ipv4_ext.val,
kern_filter_size);
memcpy(&kern_spec->ipv4_ext.mask, (void *)&ib_spec->ipv4_ext.val
+ ib_filter_size, kern_filter_size);
break;
case IBV_FLOW_SPEC_IPV6:
case IBV_FLOW_SPEC_IPV6 | IBV_FLOW_SPEC_INNER:
ret = get_filters_size(ib_spec, kern_spec,
&ib_filter_size, &kern_filter_size,
IBV_FLOW_SPEC_IPV6);
if (ret)
return ret;
kern_spec->ipv6.size = sizeof(struct ib_uverbs_flow_spec_ipv6);
memcpy(&kern_spec->ipv6.val, &ib_spec->ipv6.val,
kern_filter_size);
memcpy(&kern_spec->ipv6.mask, (void *)&ib_spec->ipv6.val
+ ib_filter_size, kern_filter_size);
break;
case IBV_FLOW_SPEC_ESP:
case IBV_FLOW_SPEC_ESP | IBV_FLOW_SPEC_INNER:
kern_spec->esp.size = sizeof(struct ib_uverbs_flow_spec_esp);
memcpy(&kern_spec->esp.val, &ib_spec->esp.val,
sizeof(struct ib_uverbs_flow_spec_esp_filter));
memcpy(&kern_spec->esp.mask, (void *)&ib_spec->esp.mask,
sizeof(struct ib_uverbs_flow_spec_esp_filter));
break;
case IBV_FLOW_SPEC_TCP:
case IBV_FLOW_SPEC_UDP:
case IBV_FLOW_SPEC_TCP | IBV_FLOW_SPEC_INNER:
case IBV_FLOW_SPEC_UDP | IBV_FLOW_SPEC_INNER:
kern_spec->tcp_udp.size = sizeof(struct ib_uverbs_flow_spec_tcp_udp);
memcpy(&kern_spec->tcp_udp.val, &ib_spec->tcp_udp.val,
sizeof(struct ibv_flow_tcp_udp_filter));
memcpy(&kern_spec->tcp_udp.mask, &ib_spec->tcp_udp.mask,
sizeof(struct ibv_flow_tcp_udp_filter));
break;
case IBV_FLOW_SPEC_GRE:
kern_spec->gre.size = sizeof(struct ib_uverbs_flow_spec_gre);
memcpy(&kern_spec->gre.val, &ib_spec->gre.val,
sizeof(struct ibv_flow_gre_filter));
memcpy(&kern_spec->gre.mask, &ib_spec->gre.mask,
sizeof(struct ibv_flow_gre_filter));
break;
case IBV_FLOW_SPEC_MPLS:
case IBV_FLOW_SPEC_MPLS | IBV_FLOW_SPEC_INNER:
kern_spec->mpls.size = sizeof(struct ib_uverbs_flow_spec_mpls);
memcpy(&kern_spec->mpls.val, &ib_spec->mpls.val,
sizeof(struct ibv_flow_mpls_filter));
memcpy(&kern_spec->mpls.mask, &ib_spec->mpls.mask,
sizeof(struct ibv_flow_mpls_filter));
break;
case IBV_FLOW_SPEC_VXLAN_TUNNEL:
ret = get_filters_size(ib_spec, kern_spec,
&ib_filter_size, &kern_filter_size,
IBV_FLOW_SPEC_VXLAN_TUNNEL);
if (ret)
return ret;
kern_spec->tunnel.size = sizeof(struct ib_uverbs_flow_spec_tunnel);
memcpy(&kern_spec->tunnel.val, &ib_spec->tunnel.val,
kern_filter_size);
memcpy(&kern_spec->tunnel.mask, (void *)&ib_spec->tunnel.val
+ ib_filter_size, kern_filter_size);
break;
case IBV_FLOW_SPEC_ACTION_TAG:
kern_spec->flow_tag.size =
sizeof(struct ib_uverbs_flow_spec_action_tag);
kern_spec->flow_tag.tag_id = ib_spec->flow_tag.tag_id;
break;
case IBV_FLOW_SPEC_ACTION_DROP:
kern_spec->drop.size = sizeof(struct ib_uverbs_flow_spec_action_drop);
break;
case IBV_FLOW_SPEC_ACTION_HANDLE: {
const struct verbs_flow_action *vaction =
container_of((const struct ibv_flow_action *)ib_spec->handle.action,
const struct verbs_flow_action, action);
kern_spec->handle.size = sizeof(struct ib_uverbs_flow_spec_action_handle);
kern_spec->handle.handle = vaction->handle;
break;
}
case IBV_FLOW_SPEC_ACTION_COUNT: {
const struct verbs_counters *vcounters =
container_of(ib_spec->flow_count.counters,
const struct verbs_counters, counters);
kern_spec->flow_count.size =
sizeof(struct ib_uverbs_flow_spec_action_count);
kern_spec->flow_count.handle = vcounters->handle;
break;
}
default:
return EINVAL;
}
return 0;
}
int ibv_cmd_create_flow(struct ibv_qp *qp,
struct ibv_flow *flow_id,
struct ibv_flow_attr *flow_attr,
void *ucmd,
size_t ucmd_size)
{
struct ibv_create_flow *cmd;
struct ib_uverbs_create_flow_resp resp;
size_t cmd_size;
size_t written_size;
int i, err;
void *kern_spec;
void *ib_spec;
cmd_size = sizeof(*cmd) + (flow_attr->num_of_specs *
sizeof(struct ibv_kern_spec));
cmd = alloca(cmd_size + ucmd_size);
memset(cmd, 0, cmd_size + ucmd_size);
cmd->qp_handle = qp->handle;
cmd->flow_attr.type = flow_attr->type;
cmd->flow_attr.priority = flow_attr->priority;
cmd->flow_attr.num_of_specs = flow_attr->num_of_specs;
cmd->flow_attr.port = flow_attr->port;
cmd->flow_attr.flags = flow_attr->flags;
kern_spec = cmd + 1;
ib_spec = flow_attr + 1;
for (i = 0; i < flow_attr->num_of_specs; i++) {
err = ib_spec_to_kern_spec(ib_spec, kern_spec);
if (err) {
errno = err;
return err;
}
cmd->flow_attr.size +=
((struct ibv_kern_spec *)kern_spec)->hdr.size;
kern_spec += ((struct ibv_kern_spec *)kern_spec)->hdr.size;
ib_spec += ((struct ibv_flow_spec *)ib_spec)->hdr.size;
}
written_size = sizeof(*cmd) + cmd->flow_attr.size;
if (ucmd) {
memcpy((char *)cmd + written_size, ucmd, ucmd_size);
written_size += ucmd_size;
}
err = execute_cmd_write_ex_full(qp->context,
IB_USER_VERBS_EX_CMD_CREATE_FLOW, cmd,
written_size - ucmd_size, written_size,
&resp, sizeof(resp), sizeof(resp));
if (err)
return err;
flow_id->context = qp->context;
flow_id->handle = resp.flow_handle;
return 0;
}
int ibv_cmd_modify_wq(struct ibv_wq *wq, struct ibv_wq_attr *attr,
struct ibv_modify_wq *cmd, size_t cmd_size)
{
int err;
if (attr->attr_mask >= IBV_WQ_ATTR_RESERVED)
return EINVAL;
memset(cmd, 0, sizeof(*cmd));
cmd->curr_wq_state = attr->curr_wq_state;
cmd->wq_state = attr->wq_state;
if (attr->attr_mask & IBV_WQ_ATTR_FLAGS) {
if (attr->flags_mask & ~(IBV_WQ_FLAGS_RESERVED - 1))
return EOPNOTSUPP;
cmd->flags = attr->flags;
cmd->flags_mask = attr->flags_mask;
}
cmd->wq_handle = wq->handle;
cmd->attr_mask = attr->attr_mask;
err = execute_cmd_write_ex_req(
wq->context, IB_USER_VERBS_EX_CMD_MODIFY_WQ, cmd, cmd_size);
if (err)
return err;
if (attr->attr_mask & IBV_WQ_ATTR_STATE)
wq->state = attr->wq_state;
return 0;
}
int ibv_cmd_create_rwq_ind_table(struct ibv_context *context,
struct ibv_rwq_ind_table_init_attr *init_attr,
struct ibv_rwq_ind_table *rwq_ind_table,
struct ib_uverbs_ex_create_rwq_ind_table_resp *resp,
size_t resp_size)
{
struct ibv_create_rwq_ind_table *cmd;
int err;
unsigned int i;
unsigned int num_tbl_entries;
size_t cmd_size;
if (init_attr->comp_mask >= IBV_CREATE_IND_TABLE_RESERVED)
return EINVAL;
num_tbl_entries = 1 << init_attr->log_ind_tbl_size;
/* The entire message must be size aligned to 8 bytes. */
cmd_size = sizeof(*cmd) + num_tbl_entries * sizeof(cmd->wq_handles[0]);
cmd_size = (cmd_size + 7) / 8 * 8;
cmd = alloca(cmd_size);
memset(cmd, 0, cmd_size);
for (i = 0; i < num_tbl_entries; i++)
cmd->wq_handles[i] = init_attr->ind_tbl[i]->handle;
cmd->log_ind_tbl_size = init_attr->log_ind_tbl_size;
cmd->comp_mask = 0;
err = execute_cmd_write_ex_full(context,
IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
cmd, cmd_size, cmd_size, resp,
sizeof(*resp), resp_size);
if (err)
return err;
if (resp->response_length < sizeof(*resp))
return EINVAL;
rwq_ind_table->ind_tbl_handle = resp->ind_tbl_handle;
rwq_ind_table->ind_tbl_num = resp->ind_tbl_num;
rwq_ind_table->context = context;
return 0;
}
int ibv_cmd_modify_cq(struct ibv_cq *cq,
struct ibv_modify_cq_attr *attr,
struct ibv_modify_cq *cmd,
size_t cmd_size)
{
if (attr->attr_mask >= IBV_CQ_ATTR_RESERVED)
return EINVAL;
cmd->cq_handle = cq->handle;
cmd->attr_mask = attr->attr_mask;
cmd->attr.cq_count = attr->moderate.cq_count;
cmd->attr.cq_period = attr->moderate.cq_period;
cmd->reserved = 0;
return execute_cmd_write_ex_req(
cq->context, IB_USER_VERBS_EX_CMD_MODIFY_CQ, cmd, cmd_size);
}