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/*
* Copyright (c) 2005 Ammasso, Inc. All rights reserved.
* Copyright (c) 2006 Open Grid Computing, 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/contrib/rdma/krping/krping.c 199223 2009-11-12 14:22:12Z attilio $");
#include <sys/ctype.h>
#include <sys/param.h>
#include <sys/condvar.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/endian.h>
#include <sys/limits.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/rwlock.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/syslog.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <contrib/rdma/rdma_cm.h>
#include "getopt.h"
#include "krping.h"
#define PFX "krping: "
static int debug = 0;
#define DEBUG_LOG if (debug) printf
static const struct krping_option krping_opts[] = {
{"count", OPT_INT, 'C'},
{"size", OPT_INT, 'S'},
{"addr", OPT_STRING, 'a'},
{"port", OPT_INT, 'p'},
{"verbose", OPT_NOPARAM, 'v'},
{"validate", OPT_NOPARAM, 'V'},
{"server", OPT_NOPARAM, 's'},
{"client", OPT_NOPARAM, 'c'},
{"dmamr", OPT_NOPARAM, 'D'},
{"debug", OPT_NOPARAM, 'd'},
{"wlat", OPT_NOPARAM, 'l'},
{"rlat", OPT_NOPARAM, 'L'},
{"bw", OPT_NOPARAM, 'B'},
{"tx-depth", OPT_INT, 't'},
{"poll", OPT_NOPARAM, 'P'},
{NULL, 0, 0}
};
struct mtx krping_mutex;
/*
* List of running krping threads.
*/
struct krping_cb_list krping_cbs;
/*
* krping "ping/pong" loop:
* client sends source rkey/addr/len
* server receives source rkey/add/len
* server rdma reads "ping" data from source
* server sends "go ahead" on rdma read completion
* client sends sink rkey/addr/len
* server receives sink rkey/addr/len
* server rdma writes "pong" data to sink
* server sends "go ahead" on rdma write completion
* <repeat loop>
*/
/*
* Default max buffer size for IO...
*/
#define RPING_BUFSIZE 128*1024
#define RPING_SQ_DEPTH 32
static void krping_wait(struct krping_cb *cb, int state)
{
int rc;
mtx_lock(&cb->lock);
while (cb->state < state) {
rc = msleep(cb, &cb->lock, 0, "krping", 0);
if (rc && rc != ERESTART) {
cb->state = ERROR;
break;
}
}
mtx_unlock(&cb->lock);
}
static int krping_cma_event_handler(struct rdma_cm_id *cma_id,
struct rdma_cm_event *event)
{
int ret;
struct krping_cb *cb = cma_id->context;
DEBUG_LOG(PFX "cma_event type %d cma_id %p (%s)\n", event->event, cma_id,
(cma_id == cb->cm_id) ? "parent" : "child");
mtx_lock(&cb->lock);
switch (event->event) {
case RDMA_CM_EVENT_ADDR_RESOLVED:
cb->state = ADDR_RESOLVED;
ret = rdma_resolve_route(cma_id, 2000);
if (ret) {
log(LOG_ERR, "rdma_resolve_route error %d\n",
ret);
wakeup(cb);
}
break;
case RDMA_CM_EVENT_ROUTE_RESOLVED:
cb->state = ROUTE_RESOLVED;
wakeup(cb);
break;
case RDMA_CM_EVENT_CONNECT_REQUEST:
cb->state = CONNECT_REQUEST;
cb->child_cm_id = cma_id;
DEBUG_LOG(PFX "child cma %p\n", cb->child_cm_id);
wakeup(cb);
break;
case RDMA_CM_EVENT_ESTABLISHED:
DEBUG_LOG(PFX "ESTABLISHED\n");
if (!cb->server) {
cb->state = CONNECTED;
wakeup(cb);
}
break;
case RDMA_CM_EVENT_ADDR_ERROR:
case RDMA_CM_EVENT_ROUTE_ERROR:
case RDMA_CM_EVENT_CONNECT_ERROR:
case RDMA_CM_EVENT_UNREACHABLE:
case RDMA_CM_EVENT_REJECTED:
log(LOG_ERR, "cma event %d, error %d\n", event->event,
event->status);
cb->state = ERROR;
wakeup(cb);
break;
case RDMA_CM_EVENT_DISCONNECTED:
DEBUG_LOG(PFX "DISCONNECT EVENT...\n");
cb->state = ERROR;
wakeup(cb);
break;
case RDMA_CM_EVENT_DEVICE_REMOVAL:
DEBUG_LOG(PFX "cma detected device removal!!!!\n");
break;
default:
log(LOG_ERR, "oof bad type!\n");
wakeup(cb);
break;
}
mtx_unlock(&cb->lock);
return 0;
}
static int server_recv(struct krping_cb *cb, struct ib_wc *wc)
{
if (wc->byte_len != sizeof(cb->recv_buf)) {
log(LOG_ERR, "Received bogus data, size %d\n",
wc->byte_len);
return -1;
}
cb->remote_rkey = ntohl(cb->recv_buf.rkey);
cb->remote_addr = ntohll(cb->recv_buf.buf);
cb->remote_len = ntohl(cb->recv_buf.size);
DEBUG_LOG(PFX "Received rkey %x addr %llx len %d from peer\n",
cb->remote_rkey, (unsigned long long)cb->remote_addr,
cb->remote_len);
if (cb->state <= CONNECTED || cb->state == RDMA_WRITE_COMPLETE)
cb->state = RDMA_READ_ADV;
else
cb->state = RDMA_WRITE_ADV;
return 0;
}
static int client_recv(struct krping_cb *cb, struct ib_wc *wc)
{
if (wc->byte_len != sizeof(cb->recv_buf)) {
log(LOG_ERR, "Received bogus data, size %d\n",
wc->byte_len);
return -1;
}
if (cb->state == RDMA_READ_ADV)
cb->state = RDMA_WRITE_ADV;
else
cb->state = RDMA_WRITE_COMPLETE;
return 0;
}
static void krping_cq_event_handler(struct ib_cq *cq, void *ctx)
{
struct krping_cb *cb = ctx;
struct ib_wc wc;
struct ib_recv_wr *bad_wr;
int ret;
mtx_lock(&cb->lock);
KASSERT(cb->cq == cq, ("bad condition"));
if (cb->state == ERROR) {
log(LOG_ERR, "cq completion in ERROR state\n");
mtx_unlock(&cb->lock);
return;
}
if (!cb->wlat && !cb->rlat && !cb->bw)
ib_req_notify_cq(cb->cq, IB_CQ_NEXT_COMP);
while ((ret = ib_poll_cq(cb->cq, 1, &wc)) == 1) {
if (wc.status) {
if (wc.status != IB_WC_WR_FLUSH_ERR)
log(LOG_ERR, "cq completion failed status %d\n",
wc.status);
goto error;
}
switch (wc.opcode) {
case IB_WC_SEND:
DEBUG_LOG(PFX "send completion\n");
cb->stats.send_bytes += cb->send_sgl.length;
cb->stats.send_msgs++;
break;
case IB_WC_RDMA_WRITE:
DEBUG_LOG(PFX "rdma write completion\n");
cb->stats.write_bytes += cb->rdma_sq_wr.sg_list->length;
cb->stats.write_msgs++;
cb->state = RDMA_WRITE_COMPLETE;
wakeup(cb);
break;
case IB_WC_RDMA_READ:
DEBUG_LOG(PFX "rdma read completion\n");
cb->stats.read_bytes += cb->rdma_sq_wr.sg_list->length;
cb->stats.read_msgs++;
cb->state = RDMA_READ_COMPLETE;
wakeup(cb);
break;
case IB_WC_RECV:
DEBUG_LOG(PFX "recv completion\n");
cb->stats.recv_bytes += sizeof(cb->recv_buf);
cb->stats.recv_msgs++;
if (cb->wlat || cb->rlat || cb->bw)
ret = server_recv(cb, &wc);
else
ret = cb->server ? server_recv(cb, &wc) :
client_recv(cb, &wc);
if (ret) {
log(LOG_ERR, "recv wc error: %d\n", ret);
goto error;
}
ret = ib_post_recv(cb->qp, &cb->rq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post recv error: %d\n",
ret);
goto error;
}
wakeup(cb);
break;
default:
log(LOG_ERR, "unknown!!!!! completion\n");
goto error;
}
}
if (ret) {
log(LOG_ERR, "poll error %d\n", ret);
goto error;
}
mtx_unlock(&cb->lock);
return;
error:
cb->state = ERROR;
wakeup(cb);
mtx_unlock(&cb->lock);
}
static int krping_accept(struct krping_cb *cb)
{
struct rdma_conn_param conn_param;
int ret;
DEBUG_LOG(PFX "accepting client connection request\n");
memset(&conn_param, 0, sizeof conn_param);
conn_param.responder_resources = 1;
conn_param.initiator_depth = 1;
ret = rdma_accept(cb->child_cm_id, &conn_param);
if (ret) {
log(LOG_ERR, "rdma_accept error: %d\n", ret);
return ret;
}
if (!cb->wlat && !cb->rlat && !cb->bw) {
krping_wait(cb, CONNECTED);
if (cb->state == ERROR) {
log(LOG_ERR, "wait for CONNECTED state %d\n", cb->state);
return -1;
}
}
return 0;
}
static void krping_setup_wr(struct krping_cb *cb)
{
/* XXX X86 only here... not mapping for dma! */
cb->recv_sgl.addr = vtophys(&cb->recv_buf);
cb->recv_sgl.length = sizeof cb->recv_buf;
if (cb->use_dmamr)
cb->recv_sgl.lkey = cb->dma_mr->lkey;
else
cb->recv_sgl.lkey = cb->recv_mr->lkey;
cb->rq_wr.sg_list = &cb->recv_sgl;
cb->rq_wr.num_sge = 1;
cb->send_sgl.addr = vtophys(&cb->send_buf);
cb->send_sgl.length = sizeof cb->send_buf;
if (cb->use_dmamr)
cb->send_sgl.lkey = cb->dma_mr->lkey;
else
cb->send_sgl.lkey = cb->send_mr->lkey;
cb->sq_wr.opcode = IB_WR_SEND;
cb->sq_wr.send_flags = IB_SEND_SIGNALED;
cb->sq_wr.sg_list = &cb->send_sgl;
cb->sq_wr.num_sge = 1;
cb->rdma_addr = vtophys(cb->rdma_buf);
cb->rdma_sgl.addr = cb->rdma_addr;
if (cb->use_dmamr)
cb->rdma_sgl.lkey = cb->dma_mr->lkey;
else
cb->rdma_sgl.lkey = cb->rdma_mr->lkey;
cb->rdma_sq_wr.send_flags = IB_SEND_SIGNALED;
cb->rdma_sq_wr.sg_list = &cb->rdma_sgl;
cb->rdma_sq_wr.num_sge = 1;
if (!cb->server || cb->wlat || cb->rlat || cb->bw) {
cb->start_addr = vtophys(cb->start_buf);
}
}
static int krping_setup_buffers(struct krping_cb *cb)
{
int ret;
struct ib_phys_buf buf;
u64 iovbase;
DEBUG_LOG(PFX "krping_setup_buffers called on cb %p\n", cb);
if (cb->use_dmamr) {
cb->dma_mr = ib_get_dma_mr(cb->pd, IB_ACCESS_LOCAL_WRITE|
IB_ACCESS_REMOTE_READ|
IB_ACCESS_REMOTE_WRITE);
if (IS_ERR(cb->dma_mr)) {
log(LOG_ERR, "reg_dmamr failed\n");
return PTR_ERR(cb->dma_mr);
}
} else {
buf.addr = vtophys(&cb->recv_buf);
buf.size = sizeof cb->recv_buf;
iovbase = vtophys(&cb->recv_buf);
cb->recv_mr = ib_reg_phys_mr(cb->pd, &buf, 1,
IB_ACCESS_LOCAL_WRITE,
&iovbase);
if (IS_ERR(cb->recv_mr)) {
log(LOG_ERR, "recv_buf reg_mr failed\n");
return PTR_ERR(cb->recv_mr);
}
buf.addr = vtophys(&cb->send_buf);
buf.size = sizeof cb->send_buf;
iovbase = vtophys(&cb->send_buf);
cb->send_mr = ib_reg_phys_mr(cb->pd, &buf, 1,
0, &iovbase);
if (IS_ERR(cb->send_mr)) {
log(LOG_ERR, "send_buf reg_mr failed\n");
ib_dereg_mr(cb->recv_mr);
return PTR_ERR(cb->send_mr);
}
}
cb->rdma_buf = contigmalloc(cb->size, M_DEVBUF, M_WAITOK, 0, -1UL,
PAGE_SIZE, 0);
if (!cb->rdma_buf) {
log(LOG_ERR, "rdma_buf malloc failed\n");
ret = ENOMEM;
goto err1;
}
if (!cb->use_dmamr) {
buf.addr = vtophys(cb->rdma_buf);
buf.size = cb->size;
iovbase = vtophys(cb->rdma_buf);
cb->rdma_mr = ib_reg_phys_mr(cb->pd, &buf, 1,
IB_ACCESS_REMOTE_READ|
IB_ACCESS_REMOTE_WRITE,
&iovbase);
if (IS_ERR(cb->rdma_mr)) {
log(LOG_ERR, "rdma_buf reg_mr failed\n");
ret = PTR_ERR(cb->rdma_mr);
goto err2;
}
}
if (!cb->server || cb->wlat || cb->rlat || cb->bw) {
cb->start_buf = contigmalloc(cb->size, M_DEVBUF, M_WAITOK,
0, -1UL, PAGE_SIZE, 0);
if (!cb->start_buf) {
log(LOG_ERR, "start_buf malloc failed\n");
ret = ENOMEM;
goto err2;
}
if (!cb->use_dmamr) {
unsigned flags = IB_ACCESS_REMOTE_READ;
if (cb->wlat || cb->rlat || cb->bw)
flags |= IB_ACCESS_REMOTE_WRITE;
buf.addr = vtophys(cb->start_buf);
buf.size = cb->size;
iovbase = vtophys(cb->start_buf);
cb->start_mr = ib_reg_phys_mr(cb->pd, &buf, 1,
flags,
&iovbase);
if (IS_ERR(cb->start_mr)) {
log(LOG_ERR, "start_buf reg_mr failed\n");
ret = PTR_ERR(cb->start_mr);
goto err3;
}
}
}
krping_setup_wr(cb);
DEBUG_LOG(PFX "allocated & registered buffers...\n");
return 0;
err3:
contigfree(cb->start_buf, cb->size, M_DEVBUF);
if (!cb->use_dmamr)
ib_dereg_mr(cb->rdma_mr);
err2:
contigfree(cb->rdma_buf, cb->size, M_DEVBUF);
err1:
if (cb->use_dmamr)
ib_dereg_mr(cb->dma_mr);
else {
ib_dereg_mr(cb->recv_mr);
ib_dereg_mr(cb->send_mr);
}
return ret;
}
static void krping_free_buffers(struct krping_cb *cb)
{
DEBUG_LOG(PFX "krping_free_buffers called on cb %p\n", cb);
#if 0
dma_unmap_single(cb->pd->device->dma_device,
pci_unmap_addr(cb, recv_mapping),
sizeof(cb->recv_buf), DMA_BIDIRECTIONAL);
dma_unmap_single(cb->pd->device->dma_device,
pci_unmap_addr(cb, send_mapping),
sizeof(cb->send_buf), DMA_BIDIRECTIONAL);
dma_unmap_single(cb->pd->device->dma_device,
pci_unmap_addr(cb, rdma_mapping),
cb->size, DMA_BIDIRECTIONAL);
#endif
contigfree(cb->rdma_buf, cb->size, M_DEVBUF);
if (!cb->server || cb->wlat || cb->rlat || cb->bw) {
#if 0
dma_unmap_single(cb->pd->device->dma_device,
pci_unmap_addr(cb, start_mapping),
cb->size, DMA_BIDIRECTIONAL);
#endif
contigfree(cb->start_buf, cb->size, M_DEVBUF);
}
if (cb->use_dmamr)
ib_dereg_mr(cb->dma_mr);
else {
ib_dereg_mr(cb->send_mr);
ib_dereg_mr(cb->recv_mr);
ib_dereg_mr(cb->rdma_mr);
if (!cb->server)
ib_dereg_mr(cb->start_mr);
}
}
static int krping_create_qp(struct krping_cb *cb)
{
struct ib_qp_init_attr init_attr;
int ret;
memset(&init_attr, 0, sizeof(init_attr));
init_attr.cap.max_send_wr = cb->txdepth;
init_attr.cap.max_recv_wr = 2;
init_attr.cap.max_recv_sge = 1;
init_attr.cap.max_send_sge = 1;
init_attr.qp_type = IB_QPT_RC;
init_attr.send_cq = cb->cq;
init_attr.recv_cq = cb->cq;
if (cb->server) {
ret = rdma_create_qp(cb->child_cm_id, cb->pd, &init_attr);
if (!ret)
cb->qp = cb->child_cm_id->qp;
} else {
ret = rdma_create_qp(cb->cm_id, cb->pd, &init_attr);
if (!ret)
cb->qp = cb->cm_id->qp;
}
return ret;
}
static void krping_free_qp(struct krping_cb *cb)
{
ib_destroy_qp(cb->qp);
ib_destroy_cq(cb->cq);
ib_dealloc_pd(cb->pd);
}
static int krping_setup_qp(struct krping_cb *cb, struct rdma_cm_id *cm_id)
{
int ret;
cb->pd = ib_alloc_pd(cm_id->device);
if (IS_ERR(cb->pd)) {
log(LOG_ERR, "ib_alloc_pd failed\n");
return PTR_ERR(cb->pd);
}
DEBUG_LOG(PFX "created pd %p\n", cb->pd);
cb->cq = ib_create_cq(cm_id->device, krping_cq_event_handler, NULL,
cb, cb->txdepth * 2, 0);
if (IS_ERR(cb->cq)) {
log(LOG_ERR, "ib_create_cq failed\n");
ret = PTR_ERR(cb->cq);
goto err1;
}
DEBUG_LOG(PFX "created cq %p\n", cb->cq);
if (!cb->wlat && !cb->rlat && !cb->bw) {
ret = ib_req_notify_cq(cb->cq, IB_CQ_NEXT_COMP);
if (ret) {
log(LOG_ERR, "ib_create_cq failed\n");
goto err2;
}
}
ret = krping_create_qp(cb);
if (ret) {
log(LOG_ERR, "krping_create_qp failed: %d\n", ret);
goto err2;
}
DEBUG_LOG(PFX "created qp %p\n", cb->qp);
return 0;
err2:
ib_destroy_cq(cb->cq);
err1:
ib_dealloc_pd(cb->pd);
return ret;
}
static void krping_format_send(struct krping_cb *cb, u64 buf,
struct ib_mr *mr)
{
struct krping_rdma_info *info = &cb->send_buf;
info->buf = htonll(buf);
info->rkey = htonl(mr->rkey);
info->size = htonl(cb->size);
DEBUG_LOG(PFX "RDMA addr %llx rkey %x len %d\n",
(unsigned long long)buf, mr->rkey, cb->size);
}
static void krping_test_server(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
int ret;
while (1) {
/* Wait for client's Start STAG/TO/Len */
krping_wait(cb, RDMA_READ_ADV);
if (cb->state != RDMA_READ_ADV) {
DEBUG_LOG(PFX "wait for RDMA_READ_ADV state %d\n",
cb->state);
break;
}
DEBUG_LOG(PFX "server received sink adv\n");
/* Issue RDMA Read. */
cb->rdma_sq_wr.opcode = IB_WR_RDMA_READ;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = cb->remote_len;
ret = ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
DEBUG_LOG(PFX "server posted rdma read req \n");
/* Wait for read completion */
krping_wait(cb, RDMA_READ_COMPLETE);
if (cb->state != RDMA_READ_COMPLETE) {
log(LOG_ERR,
"wait for RDMA_READ_COMPLETE state %d\n",
cb->state);
break;
}
DEBUG_LOG(PFX "server received read complete\n");
/* Display data in recv buf */
if (cb->verbose)
DEBUG_LOG("server ping data: %s\n", cb->rdma_buf);
/* Tell client to continue */
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
DEBUG_LOG(PFX "server posted go ahead\n");
/* Wait for client's RDMA STAG/TO/Len */
krping_wait(cb, RDMA_WRITE_ADV);
if (cb->state != RDMA_WRITE_ADV) {
log(LOG_ERR,
"wait for RDMA_WRITE_ADV state %d\n",
cb->state);
break;
}
DEBUG_LOG(PFX "server received sink adv\n");
/* RDMA Write echo data */
cb->rdma_sq_wr.opcode = IB_WR_RDMA_WRITE;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = strlen(cb->rdma_buf) + 1;
DEBUG_LOG(PFX "rdma write from lkey %x laddr %llx len %d\n",
cb->rdma_sq_wr.sg_list->lkey,
(unsigned long long)cb->rdma_sq_wr.sg_list->addr,
cb->rdma_sq_wr.sg_list->length);
ret = ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
/* Wait for completion */
krping_wait(cb, RDMA_WRITE_COMPLETE);
if (cb->state != RDMA_WRITE_COMPLETE) {
log(LOG_ERR,
"wait for RDMA_WRITE_COMPLETE state %d\n",
cb->state);
break;
}
DEBUG_LOG(PFX "server rdma write complete \n");
cb->state = CONNECTED;
/* Tell client to begin again */
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
DEBUG_LOG(PFX "server posted go ahead\n");
}
}
static void rlat_test(struct krping_cb *cb)
{
int scnt;
int iters = cb->count;
struct timeval start_tv, stop_tv;
int ret;
struct ib_wc wc;
struct ib_send_wr *bad_wr;
int ne;
scnt = 0;
cb->rdma_sq_wr.opcode = IB_WR_RDMA_READ;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = cb->size;
microtime(&start_tv);
if (!cb->poll) {
cb->state = RDMA_READ_ADV;
ib_req_notify_cq(cb->cq, IB_CQ_NEXT_COMP);
}
while (scnt < iters) {
cb->state = RDMA_READ_ADV;
ret = ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR,
"Couldn't post send: ret=%d scnt %d\n",
ret, scnt);
return;
}
do {
if (!cb->poll) {
krping_wait(cb, RDMA_READ_COMPLETE);
if (cb->state == RDMA_READ_COMPLETE) {
ne = 1;
ib_req_notify_cq(cb->cq, IB_CQ_NEXT_COMP);
} else {
ne = -1;
}
} else
ne = ib_poll_cq(cb->cq, 1, &wc);
if (cb->state == ERROR) {
log(LOG_ERR,
"state == ERROR...bailing scnt %d\n", scnt);
return;
}
} while (ne == 0);
if (ne < 0) {
log(LOG_ERR, "poll CQ failed %d\n", ne);
return;
}
if (cb->poll && wc.status != IB_WC_SUCCESS) {
log(LOG_ERR, "Completion wth error at %s:\n",
cb->server ? "server" : "client");
log(LOG_ERR, "Failed status %d: wr_id %d\n",
wc.status, (int) wc.wr_id);
return;
}
++scnt;
}
microtime(&stop_tv);
if (stop_tv.tv_usec < start_tv.tv_usec) {
stop_tv.tv_usec += 1000000;
stop_tv.tv_sec -= 1;
}
log(LOG_ERR, "delta sec %zu delta usec %lu iter %d size %d\n",
stop_tv.tv_sec - start_tv.tv_sec,
stop_tv.tv_usec - start_tv.tv_usec,
scnt, cb->size);
}
static int alloc_cycle_mem(int cycle_iters,
cycles_t **post_cycles_start,
cycles_t **post_cycles_stop,
cycles_t **poll_cycles_start,
cycles_t **poll_cycles_stop,
cycles_t **last_poll_cycles_start)
{
*post_cycles_start = malloc(cycle_iters * sizeof(cycles_t), M_DEVBUF, M_WAITOK);
if (!*post_cycles_start) {
goto fail1;
}
*post_cycles_stop = malloc(cycle_iters * sizeof(cycles_t), M_DEVBUF, M_WAITOK);
if (!*post_cycles_stop) {
goto fail2;
}
*poll_cycles_start = malloc(cycle_iters * sizeof(cycles_t), M_DEVBUF, M_WAITOK);
if (!*poll_cycles_start) {
goto fail3;
}
*poll_cycles_stop = malloc(cycle_iters * sizeof(cycles_t), M_DEVBUF, M_WAITOK);
if (!*poll_cycles_stop) {
goto fail4;
}
*last_poll_cycles_start = malloc(cycle_iters * sizeof(cycles_t), M_DEVBUF, M_WAITOK);
if (!*last_poll_cycles_start) {
goto fail5;
}
return 0;
fail5:
free(*poll_cycles_stop, M_DEVBUF);
fail4:
free(*poll_cycles_start, M_DEVBUF);
fail3:
free(*post_cycles_stop, M_DEVBUF);
fail2:
free(*post_cycles_start, M_DEVBUF);
fail1:
log(LOG_ERR, "%s malloc failed\n", __FUNCTION__);
return ENOMEM;
}
static void free_cycle_mem(cycles_t *post_cycles_start,
cycles_t *post_cycles_stop,
cycles_t *poll_cycles_start,
cycles_t *poll_cycles_stop,
cycles_t *last_poll_cycles_start)
{
free(last_poll_cycles_start, M_DEVBUF);
free(poll_cycles_stop, M_DEVBUF);
free(poll_cycles_start, M_DEVBUF);
free(post_cycles_stop, M_DEVBUF);
free(post_cycles_start, M_DEVBUF);
}
static void wlat_test(struct krping_cb *cb)
{
int ccnt, scnt, rcnt;
int iters=cb->count;
volatile char *poll_buf = (char *) cb->start_buf;
char *buf = (char *)cb->rdma_buf;
ccnt = 0;
scnt = 0;
rcnt = 0;
struct timeval start_tv, stop_tv;
cycles_t *post_cycles_start, *post_cycles_stop;
cycles_t *poll_cycles_start, *poll_cycles_stop;
cycles_t *last_poll_cycles_start;
cycles_t sum_poll = 0, sum_post = 0, sum_last_poll = 0;
int i;
int cycle_iters = 1000;
int err;
err = alloc_cycle_mem(cycle_iters, &post_cycles_start, &post_cycles_stop,
&poll_cycles_start, &poll_cycles_stop, &last_poll_cycles_start);
if (err) {
log(LOG_ERR, "%s malloc failed\n", __FUNCTION__);
return;
}
cb->rdma_sq_wr.opcode = IB_WR_RDMA_WRITE;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = cb->size;
if (cycle_iters > iters)
cycle_iters = iters;
microtime(&start_tv);
while (scnt < iters || ccnt < iters || rcnt < iters) {
/* Wait till buffer changes. */
if (rcnt < iters && !(scnt < 1 && !cb->server)) {
++rcnt;
while (*poll_buf != (char)rcnt) {
if (cb->state == ERROR) {
log(LOG_ERR, "state = ERROR, bailing\n");
return;
}
}
}
if (scnt < iters) {
struct ib_send_wr *bad_wr;
*buf = (char)scnt+1;
if (scnt < cycle_iters)
post_cycles_start[scnt] = get_cycles();
if (ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr)) {
log(LOG_ERR, "Couldn't post send: scnt=%d\n",
scnt);
return;
}
if (scnt < cycle_iters)
post_cycles_stop[scnt] = get_cycles();
scnt++;
}
if (ccnt < iters) {
struct ib_wc wc;
int ne;
if (ccnt < cycle_iters)
poll_cycles_start[ccnt] = get_cycles();
do {
if (ccnt < cycle_iters)
last_poll_cycles_start[ccnt] = get_cycles();
ne = ib_poll_cq(cb->cq, 1, &wc);
} while (ne == 0);
if (ccnt < cycle_iters)
poll_cycles_stop[ccnt] = get_cycles();
++ccnt;
if (ne < 0) {
log(LOG_ERR, "poll CQ failed %d\n", ne);
return;
}
if (wc.status != IB_WC_SUCCESS) {
log(LOG_ERR, "Completion wth error at %s:\n",
cb->server ? "server" : "client");
log(LOG_ERR, "Failed status %d: wr_id %d\n",
wc.status, (int) wc.wr_id);
log(LOG_ERR, "scnt=%d, rcnt=%d, ccnt=%d\n",
scnt, rcnt, ccnt);
return;
}
}
}
microtime(&stop_tv);
if (stop_tv.tv_usec < start_tv.tv_usec) {
stop_tv.tv_usec += 1000000;
stop_tv.tv_sec -= 1;
}
for (i=0; i < cycle_iters; i++) {
sum_post += post_cycles_stop[i] - post_cycles_start[i];
sum_poll += poll_cycles_stop[i] - poll_cycles_start[i];
sum_last_poll += poll_cycles_stop[i] - last_poll_cycles_start[i];
}
log(LOG_ERR, "delta sec %zu delta usec %lu iter %d size %d cycle_iters %d sum_post %llu sum_poll %llu sum_last_poll %llu\n",
stop_tv.tv_sec - start_tv.tv_sec,
stop_tv.tv_usec - start_tv.tv_usec,
scnt, cb->size, cycle_iters,
(unsigned long long)sum_post, (unsigned long long)sum_poll,
(unsigned long long)sum_last_poll);
free_cycle_mem(post_cycles_start, post_cycles_stop, poll_cycles_start,
poll_cycles_stop, last_poll_cycles_start);
}
static void bw_test(struct krping_cb *cb)
{
int ccnt, scnt, rcnt;
int iters=cb->count;
ccnt = 0;
scnt = 0;
rcnt = 0;
struct timeval start_tv, stop_tv;
cycles_t *post_cycles_start, *post_cycles_stop;
cycles_t *poll_cycles_start, *poll_cycles_stop;
cycles_t *last_poll_cycles_start;
cycles_t sum_poll = 0, sum_post = 0, sum_last_poll = 0;
int i;
int cycle_iters = 1000;
int err;
err = alloc_cycle_mem(cycle_iters, &post_cycles_start, &post_cycles_stop,
&poll_cycles_start, &poll_cycles_stop, &last_poll_cycles_start);
if (err) {
log(LOG_ERR, "%s kmalloc failed\n", __FUNCTION__);
return;
}
cb->rdma_sq_wr.opcode = IB_WR_RDMA_WRITE;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = cb->size;
if (cycle_iters > iters)
cycle_iters = iters;
microtime(&start_tv);
while (scnt < iters || ccnt < iters) {
while (scnt < iters && scnt - ccnt < cb->txdepth) {
struct ib_send_wr *bad_wr;
if (scnt < cycle_iters)
post_cycles_start[scnt] = get_cycles();
if (ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr)) {
log(LOG_ERR, "Couldn't post send: scnt=%d\n",
scnt);
return;
}
if (scnt < cycle_iters)
post_cycles_stop[scnt] = get_cycles();
++scnt;
}
if (ccnt < iters) {
int ne;
struct ib_wc wc;
if (ccnt < cycle_iters)
poll_cycles_start[ccnt] = get_cycles();
do {
if (ccnt < cycle_iters)
last_poll_cycles_start[ccnt] = get_cycles();
ne = ib_poll_cq(cb->cq, 1, &wc);
} while (ne == 0);
if (ccnt < cycle_iters)
poll_cycles_stop[ccnt] = get_cycles();
ccnt += 1;
if (ne < 0) {
log(LOG_ERR, "poll CQ failed %d\n", ne);
return;
}
if (wc.status != IB_WC_SUCCESS) {
log(LOG_ERR, "Completion wth error at %s:\n",
cb->server ? "server" : "client");
log(LOG_ERR, "Failed status %d: wr_id %d\n",
wc.status, (int) wc.wr_id);
return;
}
}
}
microtime(&stop_tv);
if (stop_tv.tv_usec < start_tv.tv_usec) {
stop_tv.tv_usec += 1000000;
stop_tv.tv_sec -= 1;
}
for (i=0; i < cycle_iters; i++) {
sum_post += post_cycles_stop[i] - post_cycles_start[i];
sum_poll += poll_cycles_stop[i] - poll_cycles_start[i];
sum_last_poll += poll_cycles_stop[i] - last_poll_cycles_start[i];
}
log(LOG_ERR, "delta sec %zu delta usec %lu iter %d size %d cycle_iters %d sum_post %llu sum_poll %llu sum_last_poll %llu\n",
stop_tv.tv_sec - start_tv.tv_sec,
stop_tv.tv_usec - start_tv.tv_usec,
scnt, cb->size, cycle_iters,
(unsigned long long)sum_post, (unsigned long long)sum_poll,
(unsigned long long)sum_last_poll);
free_cycle_mem(post_cycles_start, post_cycles_stop, poll_cycles_start,
poll_cycles_stop, last_poll_cycles_start);
}
static void krping_rlat_test_server(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
/* Spin waiting for client's Start STAG/TO/Len */
while (cb->state < RDMA_READ_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completiong error %d\n", wc.status);
return;
}
krping_wait(cb, ERROR);
}
static void krping_wlat_test_server(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
/* Spin waiting for client's Start STAG/TO/Len */
while (cb->state < RDMA_READ_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completiong error %d\n", wc.status);
return;
}
wlat_test(cb);
}
static void krping_bw_test_server(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
/* Spin waiting for client's Start STAG/TO/Len */
while (cb->state < RDMA_READ_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completiong error %d\n", wc.status);
return;
}
if (cb->duplex)
bw_test(cb);
krping_wait(cb, ERROR);
}
static int krping_bind_server(struct krping_cb *cb)
{
struct sockaddr_in sin;
int ret;
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof sin;
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = cb->addr.s_addr;
sin.sin_port = cb->port;
ret = rdma_bind_addr(cb->cm_id, (struct sockaddr *) &sin);
if (ret) {
log(LOG_ERR, "rdma_bind_addr error %d\n", ret);
return ret;
}
DEBUG_LOG(PFX "rdma_bind_addr successful\n");
DEBUG_LOG(PFX "rdma_listen\n");
ret = rdma_listen(cb->cm_id, 3);
if (ret) {
log(LOG_ERR, "rdma_listen failed: %d\n", ret);
return ret;
}
krping_wait(cb, CONNECT_REQUEST);
if (cb->state != CONNECT_REQUEST) {
log(LOG_ERR, "wait for CONNECT_REQUEST state %d\n",
cb->state);
return -1;
}
return 0;
}
static void krping_run_server(struct krping_cb *cb)
{
struct ib_recv_wr *bad_wr;
int ret;
ret = krping_bind_server(cb);
if (ret)
return;
ret = krping_setup_qp(cb, cb->child_cm_id);
if (ret) {
log(LOG_ERR, "setup_qp failed: %d\n", ret);
return;
}
ret = krping_setup_buffers(cb);
if (ret) {
log(LOG_ERR, "krping_setup_buffers failed: %d\n", ret);
goto err1;
}
ret = ib_post_recv(cb->qp, &cb->rq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "ib_post_recv failed: %d\n", ret);
goto err2;
}
ret = krping_accept(cb);
if (ret) {
log(LOG_ERR, "connect error %d\n", ret);
goto err2;
}
if (cb->wlat)
krping_wlat_test_server(cb);
else if (cb->rlat)
krping_rlat_test_server(cb);
else if (cb->bw)
krping_bw_test_server(cb);
else
krping_test_server(cb);
rdma_disconnect(cb->child_cm_id);
rdma_destroy_id(cb->child_cm_id);
err2:
krping_free_buffers(cb);
err1:
krping_free_qp(cb);
}
static void krping_test_client(struct krping_cb *cb)
{
int ping, start, cc, i, ret;
struct ib_send_wr *bad_wr;
unsigned char c;
start = 65;
for (ping = 0; !cb->count || ping < cb->count; ping++) {
cb->state = RDMA_READ_ADV;
/* Put some ascii text in the buffer. */
cc = sprintf(cb->start_buf, "rdma-ping-%d: ", ping);
for (i = cc, c = start; i < cb->size; i++) {
cb->start_buf[i] = c;
c++;
if (c > 122)
c = 65;
}
start++;
if (start > 122)
start = 65;
cb->start_buf[cb->size - 1] = 0;
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
/* Wait for server to ACK */
krping_wait(cb, RDMA_WRITE_ADV);
if (cb->state != RDMA_WRITE_ADV) {
log(LOG_ERR,
"wait for RDMA_WRITE_ADV state %d\n",
cb->state);
break;
}
if (cb->dma_mr)
krping_format_send(cb, cb->rdma_addr, cb->dma_mr);
else
krping_format_send(cb, cb->rdma_addr, cb->rdma_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
break;
}
/* Wait for the server to say the RDMA Write is complete. */
krping_wait(cb, RDMA_WRITE_COMPLETE);
if (cb->state != RDMA_WRITE_COMPLETE) {
log(LOG_ERR,
"wait for RDMA_WRITE_COMPLETE state %d\n",
cb->state);
break;
}
if (cb->validate)
if (memcmp(cb->start_buf, cb->rdma_buf, cb->size)) {
log(LOG_ERR, "data mismatch!\n");
break;
}
if (cb->verbose)
DEBUG_LOG("ping data: %s\n", cb->rdma_buf);
}
}
static void krping_rlat_test_client(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
cb->state = RDMA_READ_ADV;
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->rdma_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completion error %d\n", wc.status);
return;
}
/* Spin waiting for server's Start STAG/TO/Len */
while (cb->state < RDMA_WRITE_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
#if 0
{
int i;
struct timeval start, stop;
time_t sec;
suseconds_t usec;
unsigned long long elapsed;
struct ib_wc wc;
struct ib_send_wr *bad_wr;
int ne;
cb->rdma_sq_wr.opcode = IB_WR_RDMA_WRITE;
cb->rdma_sq_wr.wr.rdma.rkey = cb->remote_rkey;
cb->rdma_sq_wr.wr.rdma.remote_addr = cb->remote_addr;
cb->rdma_sq_wr.sg_list->length = 0;
cb->rdma_sq_wr.num_sge = 0;
microtime(&start);
for (i=0; i < 100000; i++) {
if (ib_post_send(cb->qp, &cb->rdma_sq_wr, &bad_wr)) {
log(LOG_ERR, "Couldn't post send\n");
return;
}
do {
ne = ib_poll_cq(cb->cq, 1, &wc);
} while (ne == 0);
if (ne < 0) {
log(LOG_ERR, "poll CQ failed %d\n", ne);
return;
}
if (wc.status != IB_WC_SUCCESS) {
log(LOG_ERR, "Completion wth error at %s:\n",
cb->server ? "server" : "client");
log(LOG_ERR, "Failed status %d: wr_id %d\n",
wc.status, (int) wc.wr_id);
return;
}
}
microtime(&stop);
if (stop.tv_usec < start.tv_usec) {
stop.tv_usec += 1000000;
stop.tv_sec -= 1;
}
sec = stop.tv_sec - start.tv_sec;
usec = stop.tv_usec - start.tv_usec;
elapsed = sec * 1000000 + usec;
log(LOG_ERR, "0B-write-lat iters 100000 usec %llu\n", elapsed);
}
#endif
rlat_test(cb);
}
static void krping_wlat_test_client(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
cb->state = RDMA_READ_ADV;
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completion error %d\n", wc.status);
return;
}
/* Spin waiting for server's Start STAG/TO/Len */
while (cb->state < RDMA_WRITE_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
wlat_test(cb);
}
static void krping_bw_test_client(struct krping_cb *cb)
{
struct ib_send_wr *bad_wr;
struct ib_wc wc;
int ret;
cb->state = RDMA_READ_ADV;
/* Send STAG/TO/Len to client */
if (cb->dma_mr)
krping_format_send(cb, cb->start_addr, cb->dma_mr);
else
krping_format_send(cb, cb->start_addr, cb->start_mr);
ret = ib_post_send(cb->qp, &cb->sq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "post send error %d\n", ret);
return;
}
/* Spin waiting for send completion */
while ((ret = ib_poll_cq(cb->cq, 1, &wc) == 0));
if (ret < 0) {
log(LOG_ERR, "poll error %d\n", ret);
return;
}
if (wc.status) {
log(LOG_ERR, "send completion error %d\n", wc.status);
return;
}
/* Spin waiting for server's Start STAG/TO/Len */
while (cb->state < RDMA_WRITE_ADV) {
krping_cq_event_handler(cb->cq, cb);
}
bw_test(cb);
}
static int krping_connect_client(struct krping_cb *cb)
{
struct rdma_conn_param conn_param;
int ret;
memset(&conn_param, 0, sizeof conn_param);
conn_param.responder_resources = 1;
conn_param.initiator_depth = 1;
conn_param.retry_count = 10;
ret = rdma_connect(cb->cm_id, &conn_param);
if (ret) {
log(LOG_ERR, "rdma_connect error %d\n", ret);
return ret;
}
krping_wait(cb, CONNECTED);
if (cb->state == ERROR) {
log(LOG_ERR, "wait for CONNECTED state %d\n", cb->state);
return -1;
}
DEBUG_LOG(PFX "rdma_connect successful\n");
return 0;
}
static int krping_bind_client(struct krping_cb *cb)
{
struct sockaddr_in sin;
int ret;
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof sin;
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = cb->addr.s_addr;
sin.sin_port = cb->port;
ret = rdma_resolve_addr(cb->cm_id, NULL, (struct sockaddr *) &sin,
2000);
if (ret) {
log(LOG_ERR, "rdma_resolve_addr error %d\n", ret);
return ret;
}
krping_wait(cb, ROUTE_RESOLVED);
if (cb->state != ROUTE_RESOLVED) {
log(LOG_ERR,
"addr/route resolution did not resolve: state %d\n",
cb->state);
return EINTR;
}
DEBUG_LOG(PFX "rdma_resolve_addr - rdma_resolve_route successful\n");
return 0;
}
static void krping_run_client(struct krping_cb *cb)
{
struct ib_recv_wr *bad_wr;
int ret;
ret = krping_bind_client(cb);
if (ret)
return;
ret = krping_setup_qp(cb, cb->cm_id);
if (ret) {
log(LOG_ERR, "setup_qp failed: %d\n", ret);
return;
}
ret = krping_setup_buffers(cb);
if (ret) {
log(LOG_ERR, "krping_setup_buffers failed: %d\n", ret);
goto err1;
}
ret = ib_post_recv(cb->qp, &cb->rq_wr, &bad_wr);
if (ret) {
log(LOG_ERR, "ib_post_recv failed: %d\n", ret);
goto err2;
}
ret = krping_connect_client(cb);
if (ret) {
log(LOG_ERR, "connect error %d\n", ret);
goto err2;
}
if (cb->wlat)
krping_wlat_test_client(cb);
else if (cb->rlat)
krping_rlat_test_client(cb);
else if (cb->bw)
krping_bw_test_client(cb);
else
krping_test_client(cb);
rdma_disconnect(cb->cm_id);
err2:
krping_free_buffers(cb);
err1:
krping_free_qp(cb);
}
int krping_doit(char *cmd)
{
struct krping_cb *cb;
int op;
int ret = 0;
char *optarg;
unsigned long optint;
debug = 0;
cb = malloc(sizeof(*cb), M_DEVBUF, M_WAITOK);
if (!cb)
return ENOMEM;
bzero(cb, sizeof *cb);
mtx_lock(&krping_mutex);
TAILQ_INSERT_TAIL(&krping_cbs, cb, list);
mtx_unlock(&krping_mutex);
cb->server = -1;
cb->state = IDLE;
cb->size = 64;
cb->txdepth = RPING_SQ_DEPTH;
mtx_init(&cb->lock, "krping mtx", NULL, MTX_DUPOK|MTX_DEF);
while ((op = krping_getopt("krping", &cmd, krping_opts, NULL, &optarg,
&optint)) != 0) {
switch (op) {
case 'a':
cb->addr_str = optarg;
DEBUG_LOG(PFX "ipaddr (%s)\n", optarg);
if (!inet_aton(optarg, &cb->addr)) {
log(LOG_ERR, "bad addr string %s\n", optarg);
ret = EINVAL;
}
break;
case 'D':
cb->use_dmamr = 1;
DEBUG_LOG(PFX "using dma mr\n");
break;
case 'p':
cb->port = htons(optint);
DEBUG_LOG(PFX "port %d\n", (int)optint);
break;
case 'P':
cb->poll = 1;
DEBUG_LOG("server\n");
break;
case 's':
cb->server = 1;
DEBUG_LOG(PFX "server\n");
break;
case 'c':
cb->server = 0;
DEBUG_LOG(PFX "client\n");
break;
case 'S':
cb->size = optint;
if ((cb->size < 1) ||
(cb->size > RPING_BUFSIZE)) {
log(LOG_ERR, "Invalid size %d "
"(valid range is 1 to %d)\n",
cb->size, RPING_BUFSIZE);
ret = EINVAL;
} else
DEBUG_LOG(PFX "size %d\n", (int)optint);
break;
case 'C':
cb->count = optint;
if (cb->count < 0) {
log(LOG_ERR, "Invalid count %d\n",
cb->count);
ret = EINVAL;
} else
DEBUG_LOG(PFX "count %d\n", (int) cb->count);
break;
case 'v':
cb->verbose++;
DEBUG_LOG(PFX "verbose\n");
break;
case 'V':
cb->validate++;
DEBUG_LOG(PFX "validate data\n");
break;
case 'L':
cb->rlat++;
break;
case 'l':
cb->wlat++;
break;
case 'B':
cb->bw++;
break;
case 't':
cb->txdepth = optint;
DEBUG_LOG(PFX "txdepth %d\n", cb->txdepth);
break;
case 'd':
debug++;
break;
default:
log(LOG_ERR, "unknown opt %s\n", optarg);
ret = EINVAL;
break;
}
}
if (ret)
goto out;
if (cb->server == -1) {
log(LOG_ERR, "must be either client or server\n");
ret = EINVAL;
goto out;
}
if ((cb->bw + cb->rlat + cb->wlat) > 1) {
log(LOG_ERR, "Pick only one test: bw, rlat, wlat\n");
ret = EINVAL;
goto out;
}
cb->cm_id = rdma_create_id(krping_cma_event_handler, cb, RDMA_PS_TCP);
if (IS_ERR(cb->cm_id)) {
ret = PTR_ERR(cb->cm_id);
log(LOG_ERR, "rdma_create_id error %d\n", ret);
goto out;
}
DEBUG_LOG(PFX "created cm_id %p\n", cb->cm_id);
if (cb->server)
krping_run_server(cb);
else
krping_run_client(cb);
DEBUG_LOG(PFX "destroy cm_id %p\n", cb->cm_id);
rdma_destroy_id(cb->cm_id);
out:
mtx_lock(&krping_mutex);
TAILQ_REMOVE(&krping_cbs, cb, list);
mtx_unlock(&krping_mutex);
free(cb, M_DEVBUF);
return ret;
}
void krping_init(void)
{
mtx_init(&krping_mutex, "krping lock", NULL, MTX_DEF);
TAILQ_INIT(&krping_cbs);
}