UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers/infiniband/sw/rxe/rxe_qp.c

846 lines
20 KiB
C
Raw Blame History

/*
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2015 System Fabric Works, 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 <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <rdma/uverbs_ioctl.h>
#include "rxe.h"
#include "rxe_loc.h"
#include "rxe_queue.h"
#include "rxe_task.h"
static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap,
int has_srq)
{
if (cap->max_send_wr > rxe->attr.max_qp_wr) {
pr_warn("invalid send wr = %d > %d\n",
cap->max_send_wr, rxe->attr.max_qp_wr);
goto err1;
}
if (cap->max_send_sge > rxe->attr.max_send_sge) {
pr_warn("invalid send sge = %d > %d\n",
cap->max_send_sge, rxe->attr.max_send_sge);
goto err1;
}
if (!has_srq) {
if (cap->max_recv_wr > rxe->attr.max_qp_wr) {
pr_warn("invalid recv wr = %d > %d\n",
cap->max_recv_wr, rxe->attr.max_qp_wr);
goto err1;
}
if (cap->max_recv_sge > rxe->attr.max_recv_sge) {
pr_warn("invalid recv sge = %d > %d\n",
cap->max_recv_sge, rxe->attr.max_recv_sge);
goto err1;
}
}
if (cap->max_inline_data > rxe->max_inline_data) {
pr_warn("invalid max inline data = %d > %d\n",
cap->max_inline_data, rxe->max_inline_data);
goto err1;
}
return 0;
err1:
return -EINVAL;
}
int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init)
{
struct ib_qp_cap *cap = &init->cap;
struct rxe_port *port;
int port_num = init->port_num;
if (!init->recv_cq || !init->send_cq) {
pr_warn("missing cq\n");
goto err1;
}
if (rxe_qp_chk_cap(rxe, cap, !!init->srq))
goto err1;
if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) {
if (!rdma_is_port_valid(&rxe->ib_dev, port_num)) {
pr_warn("invalid port = %d\n", port_num);
goto err1;
}
port = &rxe->port;
if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) {
pr_warn("SMI QP exists for port %d\n", port_num);
goto err1;
}
if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) {
pr_warn("GSI QP exists for port %d\n", port_num);
goto err1;
}
}
return 0;
err1:
return -EINVAL;
}
static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n)
{
qp->resp.res_head = 0;
qp->resp.res_tail = 0;
qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL);
if (!qp->resp.resources)
return -ENOMEM;
return 0;
}
static void free_rd_atomic_resources(struct rxe_qp *qp)
{
if (qp->resp.resources) {
int i;
for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
struct resp_res *res = &qp->resp.resources[i];
free_rd_atomic_resource(qp, res);
}
kfree(qp->resp.resources);
qp->resp.resources = NULL;
}
}
void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res)
{
if (res->type == RXE_ATOMIC_MASK) {
rxe_drop_ref(qp);
kfree_skb(res->atomic.skb);
} else if (res->type == RXE_READ_MASK) {
if (res->read.mr)
rxe_drop_ref(res->read.mr);
}
res->type = 0;
}
static void cleanup_rd_atomic_resources(struct rxe_qp *qp)
{
int i;
struct resp_res *res;
if (qp->resp.resources) {
for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) {
res = &qp->resp.resources[i];
free_rd_atomic_resource(qp, res);
}
}
}
static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_init_attr *init)
{
struct rxe_port *port;
u32 qpn;
qp->sq_sig_type = init->sq_sig_type;
qp->attr.path_mtu = 1;
qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu);
qpn = qp->pelem.index;
port = &rxe->port;
switch (init->qp_type) {
case IB_QPT_SMI:
qp->ibqp.qp_num = 0;
port->qp_smi_index = qpn;
qp->attr.port_num = init->port_num;
break;
case IB_QPT_GSI:
qp->ibqp.qp_num = 1;
port->qp_gsi_index = qpn;
qp->attr.port_num = init->port_num;
break;
default:
qp->ibqp.qp_num = qpn;
break;
}
INIT_LIST_HEAD(&qp->grp_list);
skb_queue_head_init(&qp->send_pkts);
spin_lock_init(&qp->grp_lock);
spin_lock_init(&qp->state_lock);
atomic_set(&qp->ssn, 0);
atomic_set(&qp->skb_out, 0);
}
static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_init_attr *init, struct ib_udata *udata,
struct rxe_create_qp_resp __user *uresp)
{
int err;
int wqe_size;
err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk);
if (err < 0)
return err;
qp->sk->sk->sk_user_data = qp;
/* pick a source UDP port number for this QP based on
* the source QPN. this spreads traffic for different QPs
* across different NIC RX queues (while using a single
* flow for a given QP to maintain packet order).
* the port number must be in the Dynamic Ports range
* (0xc000 - 0xffff).
*/
qp->src_port = RXE_ROCE_V2_SPORT +
(hash_32_generic(qp_num(qp), 14) & 0x3fff);
qp->sq.max_wr = init->cap.max_send_wr;
/* These caps are limited by rxe_qp_chk_cap() done by the caller */
wqe_size = max_t(int, init->cap.max_send_sge * sizeof(struct ib_sge),
init->cap.max_inline_data);
qp->sq.max_sge = init->cap.max_send_sge =
wqe_size / sizeof(struct ib_sge);
qp->sq.max_inline = init->cap.max_inline_data = wqe_size;
wqe_size += sizeof(struct rxe_send_wqe);
qp->sq.queue = rxe_queue_init(rxe, &qp->sq.max_wr, wqe_size);
if (!qp->sq.queue)
return -ENOMEM;
err = do_mmap_info(rxe, uresp ? &uresp->sq_mi : NULL, udata,
qp->sq.queue->buf, qp->sq.queue->buf_size,
&qp->sq.queue->ip);
if (err) {
vfree(qp->sq.queue->buf);
kfree(qp->sq.queue);
return err;
}
qp->req.wqe_index = producer_index(qp->sq.queue);
qp->req.state = QP_STATE_RESET;
qp->req.opcode = -1;
qp->comp.opcode = -1;
spin_lock_init(&qp->sq.sq_lock);
skb_queue_head_init(&qp->req_pkts);
rxe_init_task(rxe, &qp->req.task, qp,
rxe_requester, "req");
rxe_init_task(rxe, &qp->comp.task, qp,
rxe_completer, "comp");
qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */
if (init->qp_type == IB_QPT_RC) {
timer_setup(&qp->rnr_nak_timer, rnr_nak_timer, 0);
timer_setup(&qp->retrans_timer, retransmit_timer, 0);
}
return 0;
}
static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_init_attr *init,
struct ib_udata *udata,
struct rxe_create_qp_resp __user *uresp)
{
int err;
int wqe_size;
if (!qp->srq) {
qp->rq.max_wr = init->cap.max_recv_wr;
qp->rq.max_sge = init->cap.max_recv_sge;
wqe_size = rcv_wqe_size(qp->rq.max_sge);
pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n",
qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size);
qp->rq.queue = rxe_queue_init(rxe,
&qp->rq.max_wr,
wqe_size);
if (!qp->rq.queue)
return -ENOMEM;
err = do_mmap_info(rxe, uresp ? &uresp->rq_mi : NULL, udata,
qp->rq.queue->buf, qp->rq.queue->buf_size,
&qp->rq.queue->ip);
if (err) {
vfree(qp->rq.queue->buf);
kfree(qp->rq.queue);
return err;
}
}
spin_lock_init(&qp->rq.producer_lock);
spin_lock_init(&qp->rq.consumer_lock);
skb_queue_head_init(&qp->resp_pkts);
rxe_init_task(rxe, &qp->resp.task, qp,
rxe_responder, "resp");
qp->resp.opcode = OPCODE_NONE;
qp->resp.msn = 0;
qp->resp.state = QP_STATE_RESET;
return 0;
}
/* called by the create qp verb */
int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
struct ib_qp_init_attr *init,
struct rxe_create_qp_resp __user *uresp,
struct ib_pd *ibpd,
struct ib_udata *udata)
{
int err;
struct rxe_cq *rcq = to_rcq(init->recv_cq);
struct rxe_cq *scq = to_rcq(init->send_cq);
struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL;
rxe_add_ref(pd);
rxe_add_ref(rcq);
rxe_add_ref(scq);
if (srq)
rxe_add_ref(srq);
qp->pd = pd;
qp->rcq = rcq;
qp->scq = scq;
qp->srq = srq;
rxe_qp_init_misc(rxe, qp, init);
err = rxe_qp_init_req(rxe, qp, init, udata, uresp);
if (err)
goto err1;
err = rxe_qp_init_resp(rxe, qp, init, udata, uresp);
if (err)
goto err2;
qp->attr.qp_state = IB_QPS_RESET;
qp->valid = 1;
return 0;
err2:
rxe_queue_cleanup(qp->sq.queue);
err1:
if (srq)
rxe_drop_ref(srq);
rxe_drop_ref(scq);
rxe_drop_ref(rcq);
rxe_drop_ref(pd);
return err;
}
/* called by the query qp verb */
int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init)
{
init->event_handler = qp->ibqp.event_handler;
init->qp_context = qp->ibqp.qp_context;
init->send_cq = qp->ibqp.send_cq;
init->recv_cq = qp->ibqp.recv_cq;
init->srq = qp->ibqp.srq;
init->cap.max_send_wr = qp->sq.max_wr;
init->cap.max_send_sge = qp->sq.max_sge;
init->cap.max_inline_data = qp->sq.max_inline;
if (!qp->srq) {
init->cap.max_recv_wr = qp->rq.max_wr;
init->cap.max_recv_sge = qp->rq.max_sge;
}
init->sq_sig_type = qp->sq_sig_type;
init->qp_type = qp->ibqp.qp_type;
init->port_num = 1;
return 0;
}
/* called by the modify qp verb, this routine checks all the parameters before
* making any changes
*/
int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_attr *attr, int mask)
{
enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
attr->cur_qp_state : qp->attr.qp_state;
enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
attr->qp_state : cur_state;
if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask)) {
pr_warn("invalid mask or state for qp\n");
goto err1;
}
if (mask & IB_QP_STATE) {
if (cur_state == IB_QPS_SQD) {
if (qp->req.state == QP_STATE_DRAIN &&
new_state != IB_QPS_ERR)
goto err1;
}
}
if (mask & IB_QP_PORT) {
if (!rdma_is_port_valid(&rxe->ib_dev, attr->port_num)) {
pr_warn("invalid port %d\n", attr->port_num);
goto err1;
}
}
if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq))
goto err1;
if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
goto err1;
if (mask & IB_QP_ALT_PATH) {
if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
goto err1;
if (!rdma_is_port_valid(&rxe->ib_dev, attr->alt_port_num)) {
pr_warn("invalid alt port %d\n", attr->alt_port_num);
goto err1;
}
if (attr->alt_timeout > 31) {
pr_warn("invalid QP alt timeout %d > 31\n",
attr->alt_timeout);
goto err1;
}
}
if (mask & IB_QP_PATH_MTU) {
struct rxe_port *port = &rxe->port;
enum ib_mtu max_mtu = port->attr.max_mtu;
enum ib_mtu mtu = attr->path_mtu;
if (mtu > max_mtu) {
pr_debug("invalid mtu (%d) > (%d)\n",
ib_mtu_enum_to_int(mtu),
ib_mtu_enum_to_int(max_mtu));
goto err1;
}
}
if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
pr_warn("invalid max_rd_atomic %d > %d\n",
attr->max_rd_atomic,
rxe->attr.max_qp_rd_atom);
goto err1;
}
}
if (mask & IB_QP_TIMEOUT) {
if (attr->timeout > 31) {
pr_warn("invalid QP timeout %d > 31\n",
attr->timeout);
goto err1;
}
}
return 0;
err1:
return -EINVAL;
}
/* move the qp to the reset state */
static void rxe_qp_reset(struct rxe_qp *qp)
{
/* stop tasks from running */
rxe_disable_task(&qp->resp.task);
/* stop request/comp */
if (qp->sq.queue) {
if (qp_type(qp) == IB_QPT_RC)
rxe_disable_task(&qp->comp.task);
rxe_disable_task(&qp->req.task);
}
/* move qp to the reset state */
qp->req.state = QP_STATE_RESET;
qp->resp.state = QP_STATE_RESET;
/* let state machines reset themselves drain work and packet queues
* etc.
*/
__rxe_do_task(&qp->resp.task);
if (qp->sq.queue) {
__rxe_do_task(&qp->comp.task);
__rxe_do_task(&qp->req.task);
rxe_queue_reset(qp->sq.queue);
}
/* cleanup attributes */
atomic_set(&qp->ssn, 0);
qp->req.opcode = -1;
qp->req.need_retry = 0;
qp->req.noack_pkts = 0;
qp->resp.msn = 0;
qp->resp.opcode = -1;
qp->resp.drop_msg = 0;
qp->resp.goto_error = 0;
qp->resp.sent_psn_nak = 0;
if (qp->resp.mr) {
rxe_drop_ref(qp->resp.mr);
qp->resp.mr = NULL;
}
cleanup_rd_atomic_resources(qp);
/* reenable tasks */
rxe_enable_task(&qp->resp.task);
if (qp->sq.queue) {
if (qp_type(qp) == IB_QPT_RC)
rxe_enable_task(&qp->comp.task);
rxe_enable_task(&qp->req.task);
}
}
/* drain the send queue */
static void rxe_qp_drain(struct rxe_qp *qp)
{
if (qp->sq.queue) {
if (qp->req.state != QP_STATE_DRAINED) {
qp->req.state = QP_STATE_DRAIN;
if (qp_type(qp) == IB_QPT_RC)
rxe_run_task(&qp->comp.task, 1);
else
__rxe_do_task(&qp->comp.task);
rxe_run_task(&qp->req.task, 1);
}
}
}
/* move the qp to the error state */
void rxe_qp_error(struct rxe_qp *qp)
{
qp->req.state = QP_STATE_ERROR;
qp->resp.state = QP_STATE_ERROR;
qp->attr.qp_state = IB_QPS_ERR;
/* drain work and packet queues */
rxe_run_task(&qp->resp.task, 1);
if (qp_type(qp) == IB_QPT_RC)
rxe_run_task(&qp->comp.task, 1);
else
__rxe_do_task(&qp->comp.task);
rxe_run_task(&qp->req.task, 1);
}
/* called by the modify qp verb */
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
struct ib_udata *udata)
{
int err;
if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
qp->attr.max_rd_atomic = max_rd_atomic;
atomic_set(&qp->req.rd_atomic, max_rd_atomic);
}
if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
int max_dest_rd_atomic =
__roundup_pow_of_two(attr->max_dest_rd_atomic);
qp->attr.max_dest_rd_atomic = max_dest_rd_atomic;
free_rd_atomic_resources(qp);
err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic);
if (err)
return err;
}
if (mask & IB_QP_CUR_STATE)
qp->attr.cur_qp_state = attr->qp_state;
if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
if (mask & IB_QP_ACCESS_FLAGS)
qp->attr.qp_access_flags = attr->qp_access_flags;
if (mask & IB_QP_PKEY_INDEX)
qp->attr.pkey_index = attr->pkey_index;
if (mask & IB_QP_PORT)
qp->attr.port_num = attr->port_num;
if (mask & IB_QP_QKEY)
qp->attr.qkey = attr->qkey;
if (mask & IB_QP_AV) {
rxe_init_av(&attr->ah_attr, &qp->pri_av);
}
if (mask & IB_QP_ALT_PATH) {
rxe_init_av(&attr->alt_ah_attr, &qp->alt_av);
qp->attr.alt_port_num = attr->alt_port_num;
qp->attr.alt_pkey_index = attr->alt_pkey_index;
qp->attr.alt_timeout = attr->alt_timeout;
}
if (mask & IB_QP_PATH_MTU) {
qp->attr.path_mtu = attr->path_mtu;
qp->mtu = ib_mtu_enum_to_int(attr->path_mtu);
}
if (mask & IB_QP_TIMEOUT) {
qp->attr.timeout = attr->timeout;
if (attr->timeout == 0) {
qp->qp_timeout_jiffies = 0;
} else {
/* According to the spec, timeout = 4.096 * 2 ^ attr->timeout [us] */
int j = nsecs_to_jiffies(4096ULL << attr->timeout);
qp->qp_timeout_jiffies = j ? j : 1;
}
}
if (mask & IB_QP_RETRY_CNT) {
qp->attr.retry_cnt = attr->retry_cnt;
qp->comp.retry_cnt = attr->retry_cnt;
pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
attr->retry_cnt);
}
if (mask & IB_QP_RNR_RETRY) {
qp->attr.rnr_retry = attr->rnr_retry;
qp->comp.rnr_retry = attr->rnr_retry;
pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
attr->rnr_retry);
}
if (mask & IB_QP_RQ_PSN) {
qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
qp->resp.psn = qp->attr.rq_psn;
pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
qp->resp.psn);
}
if (mask & IB_QP_MIN_RNR_TIMER) {
qp->attr.min_rnr_timer = attr->min_rnr_timer;
pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
attr->min_rnr_timer);
}
if (mask & IB_QP_SQ_PSN) {
qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
qp->req.psn = qp->attr.sq_psn;
qp->comp.psn = qp->attr.sq_psn;
pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
}
if (mask & IB_QP_PATH_MIG_STATE)
qp->attr.path_mig_state = attr->path_mig_state;
if (mask & IB_QP_DEST_QPN)
qp->attr.dest_qp_num = attr->dest_qp_num;
if (mask & IB_QP_STATE) {
qp->attr.qp_state = attr->qp_state;
switch (attr->qp_state) {
case IB_QPS_RESET:
pr_debug("qp#%d state -> RESET\n", qp_num(qp));
rxe_qp_reset(qp);
break;
case IB_QPS_INIT:
pr_debug("qp#%d state -> INIT\n", qp_num(qp));
qp->req.state = QP_STATE_INIT;
qp->resp.state = QP_STATE_INIT;
break;
case IB_QPS_RTR:
pr_debug("qp#%d state -> RTR\n", qp_num(qp));
qp->resp.state = QP_STATE_READY;
break;
case IB_QPS_RTS:
pr_debug("qp#%d state -> RTS\n", qp_num(qp));
qp->req.state = QP_STATE_READY;
break;
case IB_QPS_SQD:
pr_debug("qp#%d state -> SQD\n", qp_num(qp));
rxe_qp_drain(qp);
break;
case IB_QPS_SQE:
pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
/* Not possible from modify_qp. */
break;
case IB_QPS_ERR:
pr_debug("qp#%d state -> ERR\n", qp_num(qp));
rxe_qp_error(qp);
break;
}
}
return 0;
}
/* called by the query qp verb */
int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask)
{
*attr = qp->attr;
attr->rq_psn = qp->resp.psn;
attr->sq_psn = qp->req.psn;
attr->cap.max_send_wr = qp->sq.max_wr;
attr->cap.max_send_sge = qp->sq.max_sge;
attr->cap.max_inline_data = qp->sq.max_inline;
if (!qp->srq) {
attr->cap.max_recv_wr = qp->rq.max_wr;
attr->cap.max_recv_sge = qp->rq.max_sge;
}
rxe_av_to_attr(&qp->pri_av, &attr->ah_attr);
rxe_av_to_attr(&qp->alt_av, &attr->alt_ah_attr);
if (qp->req.state == QP_STATE_DRAIN) {
attr->sq_draining = 1;
/* applications that get this state
* typically spin on it. yield the
* processor
*/
cond_resched();
} else {
attr->sq_draining = 0;
}
pr_debug("attr->sq_draining = %d\n", attr->sq_draining);
return 0;
}
/* called by the destroy qp verb */
void rxe_qp_destroy(struct rxe_qp *qp)
{
qp->valid = 0;
qp->qp_timeout_jiffies = 0;
rxe_cleanup_task(&qp->resp.task);
if (qp_type(qp) == IB_QPT_RC) {
del_timer_sync(&qp->retrans_timer);
del_timer_sync(&qp->rnr_nak_timer);
}
rxe_cleanup_task(&qp->req.task);
rxe_cleanup_task(&qp->comp.task);
/* flush out any receive wr's or pending requests */
__rxe_do_task(&qp->req.task);
if (qp->sq.queue) {
__rxe_do_task(&qp->comp.task);
__rxe_do_task(&qp->req.task);
}
}
/* called when the last reference to the qp is dropped */
static void rxe_qp_do_cleanup(struct work_struct *work)
{
struct rxe_qp *qp = container_of(work, typeof(*qp), cleanup_work.work);
rxe_drop_all_mcast_groups(qp);
if (qp->sq.queue)
rxe_queue_cleanup(qp->sq.queue);
if (qp->srq)
rxe_drop_ref(qp->srq);
if (qp->rq.queue)
rxe_queue_cleanup(qp->rq.queue);
if (qp->scq)
rxe_drop_ref(qp->scq);
if (qp->rcq)
rxe_drop_ref(qp->rcq);
if (qp->pd)
rxe_drop_ref(qp->pd);
if (qp->resp.mr) {
rxe_drop_ref(qp->resp.mr);
qp->resp.mr = NULL;
}
if (qp_type(qp) == IB_QPT_RC)
sk_dst_reset(qp->sk->sk);
free_rd_atomic_resources(qp);
kernel_sock_shutdown(qp->sk, SHUT_RDWR);
sock_release(qp->sk);
}
/* called when the last reference to the qp is dropped */
void rxe_qp_cleanup(struct rxe_pool_entry *arg)
{
struct rxe_qp *qp = container_of(arg, typeof(*qp), pelem);
execute_in_process_context(rxe_qp_do_cleanup, &qp->cleanup_work);
}
Reference in New Issue View Git Blame Copy Permalink