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rdma.c
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rdma.c
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/*
* qperf - handle RDMA tests.
*
* Copyright (c) 2002-2009 Johann George. All rights reserved.
* Copyright (c) 2006-2009 QLogic Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#define _GNU_SOURCE
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <rdma/rdma_cma.h>
#include <infiniband/verbs.h>
#include "qperf.h"
/*
* RDMA parameters.
*/
#define QKEY 0x11111111 /* Q_Key */
#define NCQE 1024 /* Number of CQ entries */
#define GRH_SIZE 40 /* InfiniBand GRH size */
#define MTU_SIZE 2048 /* Default MTU Size */
#define RETRY_CNT 7 /* RC retry count */
#define RNR_RETRY_CNT 7 /* RC RNR retry count */
#define MIN_RNR_TIMER 12 /* RC Minimum RNR timer */
#define LOCAL_ACK_TIMEOUT 14 /* RC local ACK timeout */
/*
* Work request IDs.
*/
#define WRID_SEND 1 /* Send */
#define WRID_RECV 2 /* Receive */
#define WRID_RDMA 3 /* RDMA */
/*
* Constants.
*/
#define K2 (2*1024)
#define K64 (64*1024)
/*
* For convenience.
*/
typedef enum ibv_wr_opcode ibv_op;
typedef struct ibv_comp_channel ibv_cc;
typedef struct ibv_xrc_domain ibv_xrc;
/*
* Atomic operations.
*/
typedef enum ATOMIC {
COMPARE_SWAP,
FETCH_ADD
} ATOMIC;
/*
* IO Mode.
*/
typedef enum IOMODE {
IO_SR, /* Send/Receive */
IO_RDMA /* RDMA */
} IOMODE;
/*
* Information specific to a node.
*/
typedef struct NODE {
uint64_t vaddr; /* Virtual address */
uint32_t lid; /* Local ID */
uint32_t qpn; /* Queue pair number */
uint32_t psn; /* Packet sequence number */
uint32_t srqn; /* Shared queue number */
uint32_t rkey; /* Remote key */
uint32_t alt_lid; /* Alternate Path Local LID */
uint32_t rd_atomic; /* Number of read/atomics supported */
} NODE;
/*
* InfiniBand specific information.
*/
typedef struct IBINFO {
int mtu; /* MTU */
int port; /* Port */
int rate; /* Static rate */
struct ibv_context *context; /* Context */
struct ibv_device **devlist; /* Device list */
} IBINFO;
/*
* Connection Manager specific information.
*/
typedef struct CMINFO {
struct rdma_event_channel *channel; /* Channel */
struct rdma_cm_id *id; /* RDMA id */
struct rdma_cm_event *event; /* Event */
} CMINFO;
/*
* RDMA device descriptor.
*/
typedef struct DEVICE {
NODE lnode; /* Local node information */
NODE rnode; /* Remote node information */
IBINFO ib; /* InfiniBand information */
CMINFO cm; /* Connection Manager information */
uint32_t qkey; /* Q Key for UD */
int trans; /* QP transport */
int msg_size; /* Message size */
int buf_size; /* Buffer size */
int max_send_wr; /* Maximum send work requests */
int max_recv_wr; /* Maximum receive work requests */
int max_inline; /* Maximum amount of inline data */
char *buffer; /* Buffer */
ibv_cc *channel; /* Channel */
struct ibv_pd *pd; /* Protection domain */
struct ibv_mr *mr; /* Memory region */
struct ibv_cq *cq; /* Completion queue */
struct ibv_qp *qp; /* Queue Pair */
struct ibv_ah *ah; /* Address handle */
struct ibv_srq *srq; /* Shared receive queue */
ibv_xrc *xrc; /* XRC domain */
} DEVICE;
/*
* Names associated with a value.
*/
typedef struct NAMES {
int value; /* Value */
char *name; /* Name */
} NAMES;
/*
* RDMA speeds and names.
*/
typedef struct RATES {
const char *name; /* Name */
uint32_t rate; /* Rate */
} RATES;
/*
* Function prototypes.
*/
static void atomic_seq(ATOMIC atomic, int i,
uint64_t *value, uint64_t *args);
static void cm_ack_event(DEVICE *dev);
static void cm_close(DEVICE *dev);
static char *cm_event_name(int event, char *data, int size);
static void cm_expect_event(DEVICE *dev, int expected);
static void cm_init(DEVICE *dev);
static void cm_open(DEVICE *dev);
static void cm_open_client(DEVICE *dev);
static void cm_open_server(DEVICE *dev);
static void cm_prep(DEVICE *dev);
static void cq_error(int status);
static void dec_node(NODE *host);
static void do_error(int status, uint64_t *errors);
static void enc_node(NODE *host);
static void ib_client_atomic(ATOMIC atomic);
static void ib_client_verify_atomic(ATOMIC atomic);
static void ib_close1(DEVICE *dev);
static void ib_close2(DEVICE *dev);
static void ib_migrate(DEVICE *dev);
static void ib_open(DEVICE *dev);
static void ib_post_atomic(DEVICE *dev, ATOMIC atomic, int wrid,
int offset, uint64_t compare_add, uint64_t swap);
static void ib_prep(DEVICE *dev);
static void rd_bi_bw(int transport);
static void rd_client_bw(int transport);
static void rd_client_rdma_bw(int transport, ibv_op opcode);
static void rd_client_rdma_read_lat(int transport);
static void rd_close(DEVICE *dev);
static void rd_mralloc(DEVICE *dev, int size);
static void rd_mrfree(DEVICE *dev);
static void rd_open(DEVICE *dev, int trans, int max_send_wr, int max_recv_wr);
static void rd_params(int transport, long msg_size, int poll, int atomic);
static int rd_poll(DEVICE *dev, struct ibv_wc *wc, int nwc);
static void rd_post_rdma_std(DEVICE *dev, ibv_op opcode, int n);
static void rd_post_recv_std(DEVICE *dev, int n);
static void rd_post_send(DEVICE *dev, int off, int len,
int inc, int rep, int stat);
static void rd_post_send_std(DEVICE *dev, int n);
static void rd_pp_lat(int transport, IOMODE iomode);
static void rd_pp_lat_loop(DEVICE *dev, IOMODE iomode);
static void rd_prep(DEVICE *dev, int size);
static void rd_rdma_write_poll_lat(int transport);
static void rd_server_def(int transport);
static void rd_server_nop(int transport, int size);
static int maybe(int val, char *msg);
static char *opcode_name(int opcode);
static void show_node_info(DEVICE *dev);
/*
* List of errors we can get from a CQE.
*/
NAMES CQErrors[] ={
{ IBV_WC_SUCCESS, "Success" },
{ IBV_WC_LOC_LEN_ERR, "Local length error" },
{ IBV_WC_LOC_QP_OP_ERR, "Local QP operation failure" },
{ IBV_WC_LOC_EEC_OP_ERR, "Local EEC operation failure" },
{ IBV_WC_LOC_PROT_ERR, "Local protection error" },
{ IBV_WC_WR_FLUSH_ERR, "WR flush failure" },
{ IBV_WC_MW_BIND_ERR, "Memory window bind failure" },
{ IBV_WC_BAD_RESP_ERR, "Bad response" },
{ IBV_WC_LOC_ACCESS_ERR, "Local access failure" },
{ IBV_WC_REM_INV_REQ_ERR, "Remote invalid request" },
{ IBV_WC_REM_ACCESS_ERR, "Remote access failure" },
{ IBV_WC_REM_OP_ERR, "Remote operation failure" },
{ IBV_WC_RETRY_EXC_ERR, "Retries exceeded" },
{ IBV_WC_RNR_RETRY_EXC_ERR, "RNR retry exceeded" },
{ IBV_WC_LOC_RDD_VIOL_ERR, "Local RDD violation" },
{ IBV_WC_REM_INV_RD_REQ_ERR, "Remote invalid read request" },
{ IBV_WC_REM_ABORT_ERR, "Remote abort" },
{ IBV_WC_INV_EECN_ERR, "Invalid EECN" },
{ IBV_WC_INV_EEC_STATE_ERR, "Invalid EEC state" },
{ IBV_WC_FATAL_ERR, "Fatal error" },
{ IBV_WC_RESP_TIMEOUT_ERR, "Responder timeout" },
{ IBV_WC_GENERAL_ERR, "General error" },
};
/*
* Opcodes.
*/
NAMES Opcodes[] ={
{ IBV_WR_ATOMIC_CMP_AND_SWP, "compare and swap" },
{ IBV_WR_ATOMIC_FETCH_AND_ADD, "fetch and add" },
{ IBV_WR_RDMA_READ, "rdma read" },
{ IBV_WR_RDMA_WRITE, "rdma write" },
{ IBV_WR_RDMA_WRITE_WITH_IMM, "rdma write with immediate" },
{ IBV_WR_SEND, "send" },
{ IBV_WR_SEND_WITH_IMM, "send with immediate" },
};
/*
* Events from the Connection Manager.
*/
NAMES CMEvents[] ={
{ RDMA_CM_EVENT_ADDR_RESOLVED, "Address resolved" },
{ RDMA_CM_EVENT_ADDR_ERROR, "Address error" },
{ RDMA_CM_EVENT_ROUTE_RESOLVED, "Route resolved" },
{ RDMA_CM_EVENT_ROUTE_ERROR, "Route error" },
{ RDMA_CM_EVENT_CONNECT_REQUEST, "Connect request" },
{ RDMA_CM_EVENT_CONNECT_RESPONSE, "Connect response" },
{ RDMA_CM_EVENT_CONNECT_ERROR, "Connect error" },
{ RDMA_CM_EVENT_UNREACHABLE, "Event unreachable" },
{ RDMA_CM_EVENT_REJECTED, "Event rejected" },
{ RDMA_CM_EVENT_ESTABLISHED, "Event established" },
{ RDMA_CM_EVENT_DISCONNECTED, "Event disconnected" },
{ RDMA_CM_EVENT_DEVICE_REMOVAL, "Device removal" },
{ RDMA_CM_EVENT_MULTICAST_JOIN, "Multicast join" },
{ RDMA_CM_EVENT_MULTICAST_ERROR, "Multicast error" },
};
/*
* Opcodes.
*/
RATES Rates[] ={
{ "", IBV_RATE_MAX },
{ "max", IBV_RATE_MAX },
{ "1xSDR", IBV_RATE_2_5_GBPS },
{ "1xDDR", IBV_RATE_5_GBPS },
{ "1xQDR", IBV_RATE_10_GBPS },
{ "4xSDR", IBV_RATE_10_GBPS },
{ "4xDDR", IBV_RATE_20_GBPS },
{ "4xQDR", IBV_RATE_40_GBPS },
{ "8xSDR", IBV_RATE_20_GBPS },
{ "8xDDR", IBV_RATE_40_GBPS },
{ "8xQDR", IBV_RATE_80_GBPS },
{ "2.5", IBV_RATE_2_5_GBPS },
{ "5", IBV_RATE_5_GBPS },
{ "10", IBV_RATE_10_GBPS },
{ "20", IBV_RATE_20_GBPS },
{ "30", IBV_RATE_30_GBPS },
{ "40", IBV_RATE_40_GBPS },
{ "60", IBV_RATE_60_GBPS },
{ "80", IBV_RATE_80_GBPS },
{ "120", IBV_RATE_120_GBPS },
};
/*
* This routine is never called and is solely to avoid compiler warnings for
* functions that are not currently being used.
*/
void
rdma_not_called(void)
{
if (0)
ib_migrate(NULL);
}
/*
* Measure RC bi-directional bandwidth (client side).
*/
void
run_client_rc_bi_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
rd_params(IBV_QPT_RC, K64, 1, 0);
rd_bi_bw(IBV_QPT_RC);
show_results(BANDWIDTH);
}
/*
* Measure RC bi-directional bandwidth (server side).
*/
void
run_server_rc_bi_bw(void)
{
rd_bi_bw(IBV_QPT_RC);
}
/*
* Measure RC bandwidth (client side).
*/
void
run_client_rc_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
par_use(L_NO_MSGS);
par_use(R_NO_MSGS);
rd_params(IBV_QPT_RC, K64, 1, 0);
rd_client_bw(IBV_QPT_RC);
show_results(BANDWIDTH);
}
/*
* Measure RC bandwidth (server side).
*/
void
run_server_rc_bw(void)
{
rd_server_def(IBV_QPT_RC);
}
/*
* Measure RC compare and swap messaging rate (client side).
*/
void
run_client_rc_compare_swap_mr(void)
{
ib_client_atomic(COMPARE_SWAP);
}
/*
* Measure RC compare and swap messaging rate (server side).
*/
void
run_server_rc_compare_swap_mr(void)
{
rd_server_nop(IBV_QPT_RC, sizeof(uint64_t));
}
/*
* Measure RC fetch and add messaging rate (client side).
*/
void
run_client_rc_fetch_add_mr(void)
{
ib_client_atomic(FETCH_ADD);
}
/*
* Measure RC fetch and add messaging rate (server side).
*/
void
run_server_rc_fetch_add_mr(void)
{
rd_server_nop(IBV_QPT_RC, sizeof(uint64_t));
}
/*
* Measure RC latency (client side).
*/
void
run_client_rc_lat(void)
{
rd_params(IBV_QPT_RC, 1, 1, 0);
rd_pp_lat(IBV_QPT_RC, IO_SR);
}
/*
* Measure RC latency (server side).
*/
void
run_server_rc_lat(void)
{
rd_pp_lat(IBV_QPT_RC, IO_SR);
}
/*
* Measure RC RDMA read bandwidth (client side).
*/
void
run_client_rc_rdma_read_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
par_use(L_RD_ATOMIC);
par_use(R_RD_ATOMIC);
rd_params(IBV_QPT_RC, K64, 1, 0);
rd_client_rdma_bw(IBV_QPT_RC, IBV_WR_RDMA_READ);
show_results(BANDWIDTH);
}
/*
* Measure RC RDMA read bandwidth (server side).
*/
void
run_server_rc_rdma_read_bw(void)
{
rd_server_nop(IBV_QPT_RC, 0);
}
/*
* Measure RC RDMA read latency (client side).
*/
void
run_client_rc_rdma_read_lat(void)
{
rd_params(IBV_QPT_RC, 1, 1, 0);
rd_client_rdma_read_lat(IBV_QPT_RC);
}
/*
* Measure RC RDMA read latency (server side).
*/
void
run_server_rc_rdma_read_lat(void)
{
rd_server_nop(IBV_QPT_RC, 0);
}
/*
* Measure RC RDMA write bandwidth (client side).
*/
void
run_client_rc_rdma_write_bw(void)
{
rd_params(IBV_QPT_RC, K64, 1, 0);
rd_client_rdma_bw(IBV_QPT_RC, IBV_WR_RDMA_WRITE_WITH_IMM);
show_results(BANDWIDTH);
}
/*
* Measure RC RDMA write bandwidth (server side).
*/
void
run_server_rc_rdma_write_bw(void)
{
rd_server_def(IBV_QPT_RC);
}
/*
* Measure RC RDMA write latency (client side).
*/
void
run_client_rc_rdma_write_lat(void)
{
rd_params(IBV_QPT_RC, 1, 1, 0);
rd_pp_lat(IBV_QPT_RC, IO_RDMA);
}
/*
* Measure RC RDMA write latency (server side).
*/
void
run_server_rc_rdma_write_lat(void)
{
rd_pp_lat(IBV_QPT_RC, IO_RDMA);
}
/*
* Measure RC RDMA write polling latency (client side).
*/
void
run_client_rc_rdma_write_poll_lat(void)
{
rd_params(IBV_QPT_RC, 1, 0, 0);
rd_rdma_write_poll_lat(IBV_QPT_RC);
show_results(LATENCY);
}
/*
* Measure RC RDMA write polling latency (server side).
*/
void
run_server_rc_rdma_write_poll_lat(void)
{
rd_rdma_write_poll_lat(IBV_QPT_RC);
}
/*
* Measure UC bi-directional bandwidth (client side).
*/
void
run_client_uc_bi_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
rd_params(IBV_QPT_UC, K64, 1, 0);
rd_bi_bw(IBV_QPT_UC);
show_results(BANDWIDTH_SR);
}
/*
* Measure UC bi-directional bandwidth (server side).
*/
void
run_server_uc_bi_bw(void)
{
rd_bi_bw(IBV_QPT_UC);
}
/*
* Measure UC bandwidth (client side).
*/
void
run_client_uc_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
par_use(L_NO_MSGS);
par_use(R_NO_MSGS);
rd_params(IBV_QPT_UC, K64, 1, 0);
rd_client_bw(IBV_QPT_UC);
show_results(BANDWIDTH_SR);
}
/*
* Measure UC bandwidth (server side).
*/
void
run_server_uc_bw(void)
{
rd_server_def(IBV_QPT_UC);
}
/*
* Measure UC latency (client side).
*/
void
run_client_uc_lat(void)
{
rd_params(IBV_QPT_UC, 1, 1, 0);
rd_pp_lat(IBV_QPT_UC, IO_SR);
}
/*
* Measure UC latency (server side).
*/
void
run_server_uc_lat(void)
{
rd_pp_lat(IBV_QPT_UC, IO_SR);
}
/*
* Measure UC RDMA write bandwidth (client side).
*/
void
run_client_uc_rdma_write_bw(void)
{
rd_params(IBV_QPT_UC, K64, 1, 0);
rd_client_rdma_bw(IBV_QPT_UC, IBV_WR_RDMA_WRITE_WITH_IMM);
show_results(BANDWIDTH_SR);
}
/*
* Measure UC RDMA write bandwidth (server side).
*/
void
run_server_uc_rdma_write_bw(void)
{
rd_server_def(IBV_QPT_UC);
}
/*
* Measure UC RDMA write latency (client side).
*/
void
run_client_uc_rdma_write_lat(void)
{
rd_params(IBV_QPT_UC, 1, 1, 0);
rd_pp_lat(IBV_QPT_UC, IO_RDMA);
}
/*
* Measure UC RDMA write latency (server side).
*/
void
run_server_uc_rdma_write_lat(void)
{
rd_pp_lat(IBV_QPT_UC, IO_RDMA);
}
/*
* Measure UC RDMA write polling latency (client side).
*/
void
run_client_uc_rdma_write_poll_lat(void)
{
rd_params(IBV_QPT_UC, 1, 1, 0);
rd_rdma_write_poll_lat(IBV_QPT_UC);
show_results(LATENCY);
}
/*
* Measure UC RDMA write polling latency (server side).
*/
void
run_server_uc_rdma_write_poll_lat(void)
{
rd_rdma_write_poll_lat(IBV_QPT_UC);
}
/*
* Measure UD bi-directional bandwidth (client side).
*/
void
run_client_ud_bi_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
rd_params(IBV_QPT_UD, K2, 1, 0);
rd_bi_bw(IBV_QPT_UD);
show_results(BANDWIDTH_SR);
}
/*
* Measure UD bi-directional bandwidth (server side).
*/
void
run_server_ud_bi_bw(void)
{
rd_bi_bw(IBV_QPT_UD);
}
/*
* Measure UD bandwidth (client side).
*/
void
run_client_ud_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
par_use(L_NO_MSGS);
par_use(R_NO_MSGS);
rd_params(IBV_QPT_UD, K2, 1, 0);
rd_client_bw(IBV_QPT_UD);
show_results(BANDWIDTH_SR);
}
/*
* Measure UD bandwidth (server side).
*/
void
run_server_ud_bw(void)
{
rd_server_def(IBV_QPT_UD);
}
/*
* Measure UD latency (client side).
*/
void
run_client_ud_lat(void)
{
rd_params(IBV_QPT_UD, 1, 1, 0);
rd_pp_lat(IBV_QPT_UD, IO_SR);
}
/*
* Measure UD latency (server side).
*/
void
run_server_ud_lat(void)
{
rd_pp_lat(IBV_QPT_UD, IO_SR);
}
#ifdef HAS_XRC
/*
* Measure XRC bi-directional bandwidth (client side).
*/
void
run_client_xrc_bi_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
rd_params(IBV_QPT_XRC, K64, 1, 0);
rd_bi_bw(IBV_QPT_XRC);
show_results(BANDWIDTH);
}
/*
* Measure XRC bi-directional bandwidth (server side).
*/
void
run_server_xrc_bi_bw(void)
{
rd_bi_bw(IBV_QPT_XRC);
}
/*
* Measure XRC bandwidth (client side).
*/
void
run_client_xrc_bw(void)
{
par_use(L_ACCESS_RECV);
par_use(R_ACCESS_RECV);
par_use(L_NO_MSGS);
par_use(R_NO_MSGS);
rd_params(IBV_QPT_XRC, K64, 1, 0);
rd_client_bw(IBV_QPT_XRC);
show_results(BANDWIDTH);
}
/*
* Measure XRC bandwidth (server side).
*/
void
run_server_xrc_bw(void)
{
rd_server_def(IBV_QPT_XRC);
}
/*
* Measure XRC latency (client side).
*/
void
run_client_xrc_lat(void)
{
rd_params(IBV_QPT_XRC, 1, 1, 0);
rd_pp_lat(IBV_QPT_XRC, IO_SR);
}
/*
* Measure XRC latency (server side).
*/
void
run_server_xrc_lat(void)
{
rd_pp_lat(IBV_QPT_XRC, IO_SR);
}
#endif /* HAS_XRC */
/*
* Verify RC compare and swap (client side).
*/
void
run_client_ver_rc_compare_swap(void)
{
ib_client_verify_atomic(COMPARE_SWAP);
}
/*
* Verify RC compare and swap (server side).
*/
void
run_server_ver_rc_compare_swap(void)
{
rd_server_nop(IBV_QPT_RC, sizeof(uint64_t));
}
/*
* Verify RC fetch and add (client side).
*/
void
run_client_ver_rc_fetch_add(void)
{
ib_client_verify_atomic(FETCH_ADD);
}
/*
* Verify RC fetch and add (server side).
*/
void
run_server_ver_rc_fetch_add(void)
{
rd_server_nop(IBV_QPT_RC, sizeof(uint64_t));
}
/*
* Measure RDMA bandwidth (client side).
*/
static void
rd_client_bw(int transport)
{
DEVICE dev;
long sent = 0;
rd_open(&dev, transport, NCQE, 0);
rd_prep(&dev, 0);
sync_test();
rd_post_send_std(&dev, left_to_send(&sent, NCQE));
sent = NCQE;
while (!Finished) {
int i;
struct ibv_wc wc[NCQE];
int n = rd_poll(&dev, wc, cardof(wc));
if (n > LStat.max_cqes)
LStat.max_cqes = n;
if (Finished)
break;
for (i = 0; i < n; ++i) {
int id = wc[i].wr_id;
int status = wc[i].status;
if (id != WRID_SEND)
debug("bad WR ID %d", id);
else if (status != IBV_WC_SUCCESS)
do_error(status, &LStat.s.no_errs);
}
if (Req.no_msgs) {
if (LStat.s.no_msgs + LStat.s.no_errs >= Req.no_msgs)
break;
n = left_to_send(&sent, n);
}
rd_post_send_std(&dev, n);
sent += n;
}
stop_test_timer();
exchange_results();
rd_close(&dev);
}
/*
* Default action for the server is to post receive buffers and whenever it
* gets a completion entry, compute statistics and post more buffers.
*/
static void
rd_server_def(int transport)
{
DEVICE dev;
rd_open(&dev, transport, 0, NCQE);
rd_prep(&dev, 0);
rd_post_recv_std(&dev, NCQE);
sync_test();
while (!Finished) {
int i;
struct ibv_wc wc[NCQE];
int n = rd_poll(&dev, wc, cardof(wc));
if (Finished)
break;
if (n > LStat.max_cqes)
LStat.max_cqes = n;
for (i = 0; i < n; ++i) {
int status = wc[i].status;
if (status == IBV_WC_SUCCESS) {
LStat.r.no_bytes += dev.msg_size;
LStat.r.no_msgs++;
if (Req.access_recv)
touch_data(dev.buffer, dev.msg_size);
} else
do_error(status, &LStat.r.no_errs);
}
if (Req.no_msgs)
if (LStat.r.no_msgs + LStat.r.no_errs >= Req.no_msgs)
break;
rd_post_recv_std(&dev, n);
}
stop_test_timer();
exchange_results();
rd_close(&dev);
}
/*
* Measure bi-directional RDMA bandwidth.
*/
static void
rd_bi_bw(int transport)
{
DEVICE dev;
rd_open(&dev, transport, NCQE, NCQE);
rd_prep(&dev, 0);
rd_post_recv_std(&dev, NCQE);
sync_test();
rd_post_send_std(&dev, NCQE);
while (!Finished) {
int i;
struct ibv_wc wc[NCQE];
int numSent = 0;
int numRecv = 0;
int n = rd_poll(&dev, wc, cardof(wc));
if (Finished)
break;
if (n > LStat.max_cqes)
LStat.max_cqes = n;
for (i = 0; i < n; ++i) {
int id = wc[i].wr_id;
int status = wc[i].status;
switch (id) {