- The test pingpongs data between server and client
instance using RC QPs with RDMA write BTH opcode.
- For RDMA write, there's no completion at responder. Hence,
we send a sideband ACK(using socket) from requester side
on completion. This indicates to responder that it has
received data.
Check available test arguments and help:
./build/bin/ibv_rc_wr_pingpong -h
e.g.
Run server instance:
./build/bin/ibv_rc_wr_pingpong -g 0 -d <ib_dev> -c -s 8192
Run client instance:
./build/bin/ibv_rc_wr_pingpong -g 0 -d <ib_dev> -c -s 8192 <server IP>
Signed-off-by: Animesh Kishore <animesh.kishore@xxxxxxxxx>
---
debian/ibverbs-utils.install | 2 +
libibverbs/examples/CMakeLists.txt | 3 +
libibverbs/examples/rc_wr_pingpong.c | 782 +++++++++++++++++++++++++++
libibverbs/man/CMakeLists.txt | 1 +
libibverbs/man/ibv_rc_wr_pingpong.1 | 63 +++
5 files changed, 851 insertions(+)
create mode 100644 libibverbs/examples/rc_wr_pingpong.c
create mode 100644 libibverbs/man/ibv_rc_wr_pingpong.1
diff --git a/debian/ibverbs-utils.install b/debian/ibverbs-utils.install
index 170b8d26..3d77aa0f 100644
--- a/debian/ibverbs-utils.install
+++ b/debian/ibverbs-utils.install
@@ -2,6 +2,7 @@ usr/bin/ibv_asyncwatch
usr/bin/ibv_devices
usr/bin/ibv_devinfo
usr/bin/ibv_rc_pingpong
+usr/bin/ibv_rc_wr_pingpong
usr/bin/ibv_srq_pingpong
usr/bin/ibv_uc_pingpong
usr/bin/ibv_ud_pingpong
@@ -10,6 +11,7 @@ usr/share/man/man1/ibv_asyncwatch.1
usr/share/man/man1/ibv_devices.1
usr/share/man/man1/ibv_devinfo.1
usr/share/man/man1/ibv_rc_pingpong.1
+usr/share/man/man1/ibv_rc_wr_pingpong.1
usr/share/man/man1/ibv_srq_pingpong.1
usr/share/man/man1/ibv_uc_pingpong.1
usr/share/man/man1/ibv_ud_pingpong.1
diff --git a/libibverbs/examples/CMakeLists.txt b/libibverbs/examples/CMakeLists.txt
index dc4c4978..031faf0e 100644
--- a/libibverbs/examples/CMakeLists.txt
+++ b/libibverbs/examples/CMakeLists.txt
@@ -26,3 +26,6 @@ target_link_libraries(ibv_ud_pingpong LINK_PRIVATE ibverbs ibverbs_tools)
rdma_executable(ibv_xsrq_pingpong xsrq_pingpong.c)
target_link_libraries(ibv_xsrq_pingpong LINK_PRIVATE ibverbs ibverbs_tools)
+
+rdma_executable(ibv_rc_wr_pingpong rc_wr_pingpong.c)
+target_link_libraries(ibv_rc_wr_pingpong LINK_PRIVATE ibverbs ibverbs_tools)
diff --git a/libibverbs/examples/rc_wr_pingpong.c b/libibverbs/examples/rc_wr_pingpong.c
new file mode 100644
index 00000000..e6df96d5
--- /dev/null
+++ b/libibverbs/examples/rc_wr_pingpong.c
@@ -0,0 +1,782 @@
+// SPDX-License-Identifier: (GPL-2.0 OR Linux-OpenIB)
+/*
+ * Copyright (c) 2005 Topspin Communications. All rights reserved.
+ */
+
+#define _GNU_SOURCE
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include <malloc.h>
+#include <getopt.h>
+#include <arpa/inet.h>
+#include <time.h>
+#include <inttypes.h>
+#include <fcntl.h>
+
+#include "pingpong.h"
+
+#define EXCH_MSG "00000000:0000000000000000:0000:000000:000000:00000000000000000000000000000000"
+
+static int page_size;
+static int validate_buf;
+
+enum {
+ PINGPONG_RECV_WRID = 1,
+ PINGPONG_SEND_WRID = 2,
+};
+
+struct pingpong_context {
+ struct ibv_context *context;
+ struct ibv_comp_channel *channel;
+ struct ibv_pd *pd;
+ struct ibv_mr *mr;
+ struct ibv_cq *cq;
+ struct ibv_qp *qp;
+ struct ibv_port_attr portinfo;
+ char *buf;
+ int size;
+ int rx_depth;
+ int conn_fd;
+ int pending;
+};
+
+struct pingpong_dest {
+ union ibv_gid gid;
+ uintptr_t addr;
+ uint32_t rkey;
+ int lid;
+ int qpn;
+ int psn;
+};
+
+static void usage(const char *argv0)
+{
+ printf("Usage:\n");
+ printf(" %s run a basic hlib test\n", argv0);
+ printf("\n");
+ printf("Options:\n");
+ printf(" -d, --ib-dev=<dev> use IB device <dev> (default first device found)\n");
+ printf(" -i, --ib-port=<port> use port <port> of IB device (default 1)\n");
+ printf(" -s, --size=<size> size of message to exchange (default 4096)\n");
+ printf(" -g, --gid-idx=<gid index> local port gid index\n");
+ printf(" -c, --chk validate received buffer\n");
+ printf(" -n, --iters=<iters> number of exchanges (default 1000)\n");
+ printf(" -h, --help display options\n");
+}
+
+static struct pingpong_context *pp_init_ctx(struct ibv_device *ib_dev, int size,
+ int rx_depth, int port)
+{
+ struct pingpong_context *ctx;
+
+ ctx = calloc(1, sizeof(*ctx));
+ if (!ctx)
+ return NULL;
+
+ ctx->size = size;
+ ctx->rx_depth = rx_depth;
+
+ ctx->buf = memalign(page_size, size);
+ if (!ctx->buf) {
+ fprintf(stderr, "Couldn't allocate work buf.\n");
+ goto clean_ctx;
+ }
+
+ /* FIXME memset(ctx->buf, 0, size); */
+ memset(ctx->buf, 0x7b, size);
+
+ ctx->context = ibv_open_device(ib_dev);
+ if (!ctx->context) {
+ fprintf(stderr, "Couldn't get context for %s\n",
+ ibv_get_device_name(ib_dev));
+ goto clean_buffer;
+ }
+
+ ctx->pd = ibv_alloc_pd(ctx->context);
+ if (!ctx->pd) {
+ fprintf(stderr, "Couldn't allocate PD\n");
+ goto clean_device;
+ }
+
+ ctx->mr = ibv_reg_mr(ctx->pd, ctx->buf, size,
+ IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE);
+ if (!ctx->mr) {
+ fprintf(stderr, "Couldn't register MR\n");
+ goto clean_pd;
+ }
+
+ ctx->cq = ibv_create_cq(ctx->context, rx_depth + 1, NULL, NULL, 0);
+ if (!ctx->cq) {
+ fprintf(stderr, "Couldn't create CQ\n");
+ goto clean_mr;
+ }
+
+ {
+ struct ibv_qp_init_attr init_attr = {
+ .send_cq = ctx->cq,
+ .recv_cq = ctx->cq,
+ .cap = {
+ .max_send_wr = 1,
+ .max_send_sge = 1,
+ .max_recv_wr = 0,
+ .max_recv_sge = 1
+ },
+ .qp_type = IBV_QPT_RC
+ };
+
+ ctx->qp = ibv_create_qp(ctx->pd, &init_attr);
+ if (!ctx->qp) {
+ fprintf(stderr, "Couldn't create QP\n");
+ goto clean_cq;
+ }
+ }
+
+ {
+ struct ibv_qp_attr attr = {
+ .qp_state = IBV_QPS_INIT,
+ .pkey_index = 0,
+ .port_num = port,
+ .qp_access_flags = IBV_ACCESS_REMOTE_WRITE,
+ };
+
+ if (ibv_modify_qp(ctx->qp, &attr,
+ IBV_QP_STATE |
+ IBV_QP_PKEY_INDEX |
+ IBV_QP_PORT |
+ IBV_QP_ACCESS_FLAGS)) {
+ fprintf(stderr, "Failed to modify QP to INIT\n");
+ goto clean_qp;
+ }
+ }
+
+ return ctx;
+
+clean_qp:
+ ibv_destroy_qp(ctx->qp);
+
+clean_cq:
+ ibv_destroy_cq(ctx->cq);
+
+clean_mr:
+ ibv_dereg_mr(ctx->mr);
+
+clean_pd:
+ ibv_dealloc_pd(ctx->pd);
+
+clean_device:
+ ibv_close_device(ctx->context);
+
+clean_buffer:
+ free(ctx->buf);
+
+clean_ctx:
+ free(ctx);
+
+ return NULL;
+}
+
+static int pp_close_ctx(struct pingpong_context *ctx)
+{
+ if (ctx->qp && ibv_destroy_qp(ctx->qp)) {
+ fprintf(stderr, "Couldn't destroy QP\n");
+ return 1;
+ }
+
+ if (ctx->cq && ibv_destroy_cq(ctx->cq)) {
+ fprintf(stderr, "Couldn't destroy CQ\n");
+ return 1;
+ }
+
+ if (ctx->mr && ibv_dereg_mr(ctx->mr)) {
+ fprintf(stderr, "Couldn't deregister MR\n");
+ return 1;
+ }
+
+ if (ctx->pd && ibv_dealloc_pd(ctx->pd)) {
+ fprintf(stderr, "Couldn't deallocate PD\n");
+ return 1;
+ }
+
+ if (ctx->context && ibv_close_device(ctx->context)) {
+ fprintf(stderr, "Couldn't release context\n");
+ return 1;
+ }
+
+ free(ctx->buf);
+ free(ctx);
+
+ return 0;
+}
+
+static int pp_connect_ctx(struct pingpong_context *ctx, int port, int my_psn,
+ struct pingpong_dest *dest, int sgid_idx)
+{
+ struct ibv_qp_attr attr = {
+ .qp_state = IBV_QPS_RTR,
+ .path_mtu = IBV_MTU_1024,
+ .dest_qp_num = dest->qpn,
+ .rq_psn = dest->psn,
+ .max_dest_rd_atomic = 1,
+ .min_rnr_timer = 12,
+ .ah_attr = {
+ .is_global = 0,
+ .dlid = dest->lid,
+ .sl = 0,
+ .src_path_bits = 0,
+ .port_num = port
+ }
+ };
+
+ if (dest->gid.global.interface_id) {
+ attr.ah_attr.is_global = 1;
+ attr.ah_attr.grh.hop_limit = 1;
+ attr.ah_attr.grh.dgid = dest->gid;
+ attr.ah_attr.grh.sgid_index = sgid_idx;
+ }
+
+ if (ibv_modify_qp(ctx->qp, &attr,
+ IBV_QP_STATE |
+ IBV_QP_AV |
+ IBV_QP_PATH_MTU |
+ IBV_QP_DEST_QPN |
+ IBV_QP_RQ_PSN |
+ IBV_QP_MAX_DEST_RD_ATOMIC |
+ IBV_QP_MIN_RNR_TIMER)) {
+ fprintf(stderr, "Failed to modify QP to RTR\n");
+ return 1;
+ }
+
+ attr.qp_state = IBV_QPS_RTS;
+ attr.timeout = 14;
+ attr.retry_cnt = 7;
+ attr.rnr_retry = 7;
+ attr.sq_psn = my_psn;
+ attr.max_rd_atomic = 1;
+ if (ibv_modify_qp(ctx->qp, &attr,
+ IBV_QP_STATE |
+ IBV_QP_TIMEOUT |
+ IBV_QP_RETRY_CNT |
+ IBV_QP_RNR_RETRY |
+ IBV_QP_SQ_PSN |
+ IBV_QP_MAX_QP_RD_ATOMIC)) {
+ fprintf(stderr, "Failed to modify QP to RTS\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+static struct pingpong_dest *pp_client_exch_dest(struct pingpong_context *ctx,
+ const char *servername, int port,
+ const struct pingpong_dest *my_dest)
+{
+ struct addrinfo *res, *t;
+ struct addrinfo hints = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM
+ };
+ struct pingpong_dest *rem_dest = NULL;
+ char *service;
+ int n;
+ int sockfd = -1;
+ char gid[33];
+ char msg[sizeof(EXCH_MSG)];
+
+ if (asprintf(&service, "%d", port) < 0)
+ return NULL;
+
+ n = getaddrinfo(servername, service, &hints, &res);
+ if (n < 0) {
+ fprintf(stderr, "%s for %s:%d\n", gai_strerror(n), servername, port);
+ free(service);
+ return NULL;
+ }
+
+ for (t = res; t; t = t->ai_next) {
+ sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
+ if (sockfd >= 0) {
+ if (!connect(sockfd, t->ai_addr, t->ai_addrlen))
+ break;
+ close(sockfd);
+ sockfd = -1;
+ }
+ }
+
+ freeaddrinfo(res);
+ free(service);
+
+ if (sockfd < 0) {
+ fprintf(stderr, "Couldn't connect to %s:%d\n", servername, port);
+ return NULL;
+ }
+
+ gid_to_wire_gid(&my_dest->gid, gid);
+ sprintf(msg, "%08x:%016" PRIxPTR ":%04x:%06x:%06x:%s", my_dest->rkey, my_dest->addr,
+ my_dest->lid, my_dest->qpn,
+ my_dest->psn, gid);
+ if (write(sockfd, msg, sizeof(msg)) != sizeof(msg)) {
+ fprintf(stderr, "Couldn't send local address\n");
+ goto out;
+ }
+
+ if (read(sockfd, msg, sizeof(msg)) != sizeof(msg) ||
+ write(sockfd, "done", sizeof "done") != sizeof "done") {
+ perror("client read/write");
+ fprintf(stderr, "Couldn't read/write remote address\n");
+ goto out;
+ }
+
+ rem_dest = malloc(sizeof(*rem_dest));
+ if (!rem_dest)
+ goto out;
+
+ n = sscanf(msg, "%x:%" SCNxPTR ":%x:%x:%x:%s", &rem_dest->rkey, &rem_dest->addr,
+ &rem_dest->lid, &rem_dest->qpn,
+ &rem_dest->psn, gid);
+ if (n != 6) {
+ fprintf(stderr, "Couldn't parse server data\n");
+ free(rem_dest);
+ rem_dest = NULL;
+ goto out;
+ }
+ wire_gid_to_gid(gid, &rem_dest->gid);
+
+ ctx->conn_fd = sockfd;
+out:
+ return rem_dest;
+}
+
+static struct pingpong_dest *pp_server_exch_dest(struct pingpong_context *ctx,
+ int ib_port, int port,
+ const struct pingpong_dest *my_dest,
+ int sgid_idx)
+{
+ struct addrinfo *res, *t;
+ struct addrinfo hints = {
+ .ai_flags = AI_PASSIVE,
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = SOCK_STREAM
+ };
+ struct pingpong_dest *rem_dest = NULL;
+ int n;
+ int sockfd = -1, connfd;
+ char *service;
+ char gid[33];
+ char msg[sizeof(EXCH_MSG)];
+
+ if (asprintf(&service, "%d", port) < 0)
+ return NULL;
+
+ n = getaddrinfo(NULL, service, &hints, &res);
+ if (n < 0) {
+ fprintf(stderr, "%s for port %d\n", gai_strerror(n), port);
+ free(service);
+ return NULL;
+ }
+
+ for (t = res; t; t = t->ai_next) {
+ sockfd = socket(t->ai_family, t->ai_socktype, t->ai_protocol);
+ if (sockfd >= 0) {
+ n = 1;
+
+ setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n));
+
+ if (!bind(sockfd, t->ai_addr, t->ai_addrlen))
+ break;
+ close(sockfd);
+ sockfd = -1;
+ }
+ }
+
+ freeaddrinfo(res);
+ free(service);
+
+ if (sockfd < 0) {
+ fprintf(stderr, "Couldn't listen to port %d\n", port);
+ return NULL;
+ }
+
+ listen(sockfd, 1);
+ connfd = accept(sockfd, NULL, NULL);
+ close(sockfd);
+ if (connfd < 0) {
+ fprintf(stderr, "accept() failed\n");
+ return NULL;
+ }
+
+ n = read(connfd, msg, sizeof(msg));
+ if (n != sizeof(msg)) {
+ perror("server read");
+ fprintf(stderr, "%d/%d: Couldn't read remote address\n", n, (int) sizeof(msg));
+ goto out;
+ }
+
+ rem_dest = malloc(sizeof(*rem_dest));
+ if (!rem_dest)
+ goto out;
+
+ n = sscanf(msg, "%x:%" SCNxPTR ":%x:%x:%x:%s", &rem_dest->rkey, &rem_dest->addr,
+ &rem_dest->lid, &rem_dest->qpn,
+ &rem_dest->psn, gid);
+ if (n != 6) {
+ fprintf(stderr, "Couldn't parse client data\n");
+ free(rem_dest);
+ rem_dest = NULL;
+ goto out;
+ }
+
+ wire_gid_to_gid(gid, &rem_dest->gid);
+
+ if (pp_connect_ctx(ctx, ib_port, my_dest->psn, rem_dest, sgid_idx)) {
+ fprintf(stderr, "Couldn't connect to remote QP\n");
+ free(rem_dest);
+ rem_dest = NULL;
+ goto out;
+ }
+
+ gid_to_wire_gid(&my_dest->gid, gid);
+ sprintf(msg, "%08x:%016" PRIxPTR ":%04x:%06x:%06x:%s", my_dest->rkey, my_dest->addr,
+ my_dest->lid, my_dest->qpn,
+ my_dest->psn, gid);
+ if (write(connfd, msg, sizeof(msg)) != sizeof(msg) ||
+ read(connfd, msg, sizeof(msg)) != sizeof "done") {
+ fprintf(stderr, "Couldn't send/recv local address\n");
+ free(rem_dest);
+ rem_dest = NULL;
+ goto out;
+ }
+
+ ctx->conn_fd = connfd;
+out:
+ return rem_dest;
+}
+
+static int pp_post_send(struct pingpong_context *ctx, struct pingpong_dest *rem_dest)
+{
+ struct ibv_sge list = {
+ .addr = (uintptr_t) ctx->buf,
+ .length = ctx->size,
+ .lkey = ctx->mr->lkey
+ };
+ struct ibv_send_wr wr = {
+ .wr_id = PINGPONG_SEND_WRID,
+ .sg_list = &list,
+ .num_sge = 1,
+ .opcode = IBV_WR_RDMA_WRITE,
+ .send_flags = IBV_SEND_SIGNALED,
+ .wr.rdma = {
+ .remote_addr = (uint64_t) rem_dest->addr,
+ .rkey = rem_dest->rkey,
+ }
+ };
+ struct ibv_send_wr *bad_wr;
+
+ return ibv_post_send(ctx->qp, &wr, &bad_wr);
+}
+
+static inline int parse_single_wc(struct pingpong_context *ctx, int *scnt, int *rcnt,
+ int iters, struct pingpong_dest *rem_dest,
+ uint64_t wr_id, enum ibv_wc_status status)
+{
+ char msg[sizeof "recv_ack"];
+
+ if (status != IBV_WC_SUCCESS) {
+ fprintf(stderr, "Failed status %s (%d) for wr_id %d\n",
+ ibv_wc_status_str(status),
+ status, (int)wr_id);
+ return 1;
+ }
+
+ switch ((int)wr_id) {
+ case PINGPONG_SEND_WRID:
+ ++(*scnt);
+
+ strcpy(msg, "recv_ack");
+ if (write(ctx->conn_fd, msg, sizeof(msg)) != sizeof(msg)) {
+ fprintf(stderr, "Couldn't send recv ack\n");
+ return 1;
+ }
+
+ break;
+
+ case PINGPONG_RECV_WRID:
+ ++(*rcnt);
+ break;
+
+ default:
+ fprintf(stderr, "Completion for unknown wr_id %d\n", (int)wr_id);
+ return 1;
+ }
+
+ ctx->pending &= ~(int)wr_id;
+ if (*scnt < iters && !ctx->pending) {
+ if (pp_post_send(ctx, rem_dest)) {
+ fprintf(stderr, "Couldn't post send\n");
+ return 1;
+ }
+ ctx->pending = PINGPONG_RECV_WRID | PINGPONG_SEND_WRID;
+ }
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ struct ibv_device **dev_list;
+ struct ibv_device *ib_dev;
+ struct pingpong_context *ctx;
+ struct pingpong_dest my_dest;
+ struct pingpong_dest *rem_dest;
+ struct timeval start, end;
+ char *ib_devname = NULL;
+ char *servername = NULL;
+ unsigned int size = 4096;
+ unsigned int rx_depth = 500;
+ unsigned int port = 18515;
+ unsigned int iters = 1000;
+ int ib_port = 1;
+ int gidx = -1;
+ int scnt, rcnt;
+ char gid[33];
+
+ srand48(getpid() * time(NULL));
+
+ while (1) {
+ int c;
+
+ static struct option long_options[] = {
+ { .name = "ib-dev", .has_arg = 1, .val = 'd' },
+ { .name = "ib-port", .has_arg = 1, .val = 'i' },
+ { .name = "size", .has_arg = 1, .val = 's' },
+ { .name = "gid-idx", .has_arg = 1, .val = 'g' },
+ { .name = "iters", .has_arg = 1, .val = 'n' },
+ { .name = "chk", .has_arg = 0, .val = 'c' },
+ { .name = "help", .has_arg = 0, .val = 'h' },
+ {}
+ };
+
+ c = getopt_long(argc, argv, "d:i:s:g:n:ch", long_options, NULL);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'd':
+ ib_devname = strdupa(optarg);
+ break;
+
+ case 'i':
+ ib_port = strtol(optarg, NULL, 0);
+ if (ib_port < 1) {
+ usage(argv[0]);
+ return 1;
+ }
+ break;
+
+ case 's':
+ size = strtoul(optarg, NULL, 0);
+ break;
+
+ case 'g':
+ gidx = strtol(optarg, NULL, 0);
+ break;
+
+ case 'n':
+ iters = strtoul(optarg, NULL, 0);
+ break;
+
+ case 'c':
+ validate_buf = 1;
+ break;
+
+ case 'h':
+ usage(argv[0]);
+ return 0;
+ default:
+ usage(argv[0]);
+ return 1;
+ }
+ }
+
+ if (optind == argc - 1)
+ servername = strdupa(argv[optind]);
+ else if (optind < argc) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ page_size = sysconf(_SC_PAGESIZE);
+
+ dev_list = ibv_get_device_list(NULL);
+ if (!dev_list) {
+ perror("Failed to get IB devices list");
+ return 1;
+ }
+
+ if (!ib_devname) {
+ ib_dev = *dev_list;
+ if (!ib_dev) {
+ fprintf(stderr, "No IB devices found\n");
+ return 1;
+ }
+ } else {
+ int i;
+
+ for (i = 0; dev_list[i]; ++i)
+ if (!strcmp(ibv_get_device_name(dev_list[i]), ib_devname))
+ break;
+ ib_dev = dev_list[i];
+ if (!ib_dev) {
+ fprintf(stderr, "IB device %s not found\n", ib_devname);
+ return 1;
+ }
+ }
+
+ printf("Running on IB device %s\n", ibv_get_device_name(ib_dev));
+
+ ctx = pp_init_ctx(ib_dev, size, rx_depth, ib_port);
+ if (!ctx)
+ return 1;
+
+ if (pp_get_port_info(ctx->context, ib_port, &ctx->portinfo)) {
+ fprintf(stderr, "Couldn't get port info\n");
+ return 1;
+ }
+
+ my_dest.lid = ctx->portinfo.lid;
+ if (ctx->portinfo.link_layer != IBV_LINK_LAYER_ETHERNET &&
+ !my_dest.lid) {
+ fprintf(stderr, "Couldn't get local LID\n");
+ return 1;
+ }
+
+ if (gidx >= 0) {
+ if (ibv_query_gid(ctx->context, ib_port, gidx, &my_dest.gid)) {
+ fprintf(stderr, "can't read sgid of index %d\n", gidx);
+ return 1;
+ }
+ } else {
+ memset(&my_dest.gid, 0, sizeof(my_dest.gid));
+ }
+
+ my_dest.qpn = ctx->qp->qp_num;
+ my_dest.psn = lrand48() & 0xffffff;
+ my_dest.rkey = ctx->mr->rkey;
+ my_dest.addr = (uintptr_t) ctx->buf;
+ inet_ntop(AF_INET6, &my_dest.gid, gid, sizeof(gid));
+ printf(" local: RKEY 0x%08x, ADDR 0x%016" PRIxPTR ", LID 0x%04x, QPN 0x%06x, PSN 0x%06x, GID %s\n",
+ my_dest.rkey, my_dest.addr, my_dest.lid, my_dest.qpn, my_dest.psn, gid);
+
+ if (servername)
+ rem_dest = pp_client_exch_dest(ctx, servername, port, &my_dest);
+ else
+ rem_dest = pp_server_exch_dest(ctx, ib_port, port, &my_dest, gidx);
+
+ if (!rem_dest)
+ return 1;
+
+ inet_ntop(AF_INET6, &rem_dest->gid, gid, sizeof(gid));
+ printf(" remote: RKEY 0x%08x, ADDR 0x%016" PRIxPTR ", LID 0x%04x, QPN 0x%06x, PSN 0x%06x, GID %s\n",
+ rem_dest->rkey, rem_dest->addr, rem_dest->lid, rem_dest->qpn, rem_dest->psn, gid);
+
+ if (servername)
+ if (pp_connect_ctx(ctx, ib_port, my_dest.psn, rem_dest, gidx))
+ return 1;
+
+ ctx->pending = PINGPONG_RECV_WRID;
+
+ if (servername) {
+ if (validate_buf)
+ for (int i = 0; i < size; i += page_size)
+ ctx->buf[i] = i / page_size % sizeof(char);
+
+ if (pp_post_send(ctx, rem_dest)) {
+ fprintf(stderr, "Couldn't post send\n");
+ return 1;
+ }
+ ctx->pending |= PINGPONG_SEND_WRID;
+ }
+
+ if (gettimeofday(&start, NULL)) {
+ perror("gettimeofday");
+ return 1;
+ }
+
+ scnt = rcnt = 0;
+ while (rcnt < iters || scnt < iters) {
+ int ne, i, ret;
+ struct ibv_wc wc[2];
+
+ do {
+ char msg[sizeof "recv_ack"];
+ int flags;
+
+ ne = ibv_poll_cq(ctx->cq, 2, wc);
+ if (ne < 0) {
+ fprintf(stderr, "poll CQ failed %d\n", ne);
+ return 1;
+ }
+
+ flags = fcntl(ctx->conn_fd, F_GETFL, 0);
+ fcntl(ctx->conn_fd, F_SETFL, flags | O_NONBLOCK);
+ if (read(ctx->conn_fd, msg, sizeof(msg)) > 0) {
+ if (!strcmp("recv_ack", msg)) {
+ wc[ne].status = IBV_WC_SUCCESS;
+ wc[ne].wr_id = PINGPONG_RECV_WRID;
+ ne++;
+ } else
+ fprintf(stderr, "Invalid msg %s\n", msg);
+ }
+ } while (ne < 1);
+
+ for (i = 0; i < ne; ++i) {
+ ret = parse_single_wc(ctx, &scnt, &rcnt, iters, rem_dest,
+ wc[i].wr_id, wc[i].status);
+ if (ret) {
+ fprintf(stderr, "parse WC failed %d\n", ne);
+ return 1;
+ }
+ }
+ }
+
+ if (gettimeofday(&end, NULL)) {
+ perror("gettimeofday");
+ return 1;
+ }
+
+ {
+ float usec = (end.tv_sec - start.tv_sec) * 1000000 +
+ (end.tv_usec - start.tv_usec);
+ long long bytes = (long long) size * iters * 2;
+
+ printf("%lld bytes in %.2f seconds = %.2f Mbit/sec\n",
+ bytes, usec / 1000000., bytes * 8. / usec);
+ printf("%d iters in %.2f seconds = %.2f usec/iter\n",
+ iters, usec / 1000000., usec / iters);
+ }
+
+ if ((!servername) && (validate_buf)) {
+ for (int i = 0; i < size; i += page_size)
+ if (ctx->buf[i] != i / page_size % sizeof(char)) {
+ fprintf(stderr, "invalid data in page %d\n",
+ i / page_size);
+ return 1;
+ }
+ }
+
+ free(rem_dest);
+ close(ctx->conn_fd);
+
+ if (pp_close_ctx(ctx))
+ return 1;
+
+ ibv_free_device_list(dev_list);
+
+ return 0;
+}
diff --git a/libibverbs/man/CMakeLists.txt b/libibverbs/man/CMakeLists.txt
index 843d7f0a..40fa64cf 100644
--- a/libibverbs/man/CMakeLists.txt
+++ b/libibverbs/man/CMakeLists.txt
@@ -70,6 +70,7 @@ rdma_man_pages(
ibv_rate_to_mbps.3.md
ibv_rate_to_mult.3.md
ibv_rc_pingpong.1
+ ibv_rc_wr_pingpong.1
ibv_read_counters.3.md
ibv_reg_mr.3
ibv_req_notify_cq.3.md
diff --git a/libibverbs/man/ibv_rc_wr_pingpong.1 b/libibverbs/man/ibv_rc_wr_pingpong.1
new file mode 100644
index 00000000..a41fe948
--- /dev/null
+++ b/libibverbs/man/ibv_rc_wr_pingpong.1
@@ -0,0 +1,63 @@
+.\" Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md
+.TH IBV_RC_WR_PINGPONG 1 "April 30, 2023" "libibverbs" "USER COMMANDS"
+
+.SH NAME
+ibv_rc_wr_pingpong \- simple InfiniBand RC RDMA write transport test
+
+.SH SYNOPSIS
+.B ibv_rc_wr_pingpong
+[\-d device] [\-i ib port] [\-s size]
+[\-n iters] [\-g gid index] [\-c] \fBHOSTNAME\fR
+
+.B ibv_rc_wr_pingpong
+[\-d device] [\-i ib port] [\-s size]
+[\-n iters] [\-g gid index] [\-c]
+
+.SH DESCRIPTION
+.PP
+Run a simple ping-pong test over InfiniBand via the reliable
+connected (RC) RDMA write transport.
+
+.SH OPTIONS
+
+.PP
+.TP
+\fB\-d\fR, \fB\-\-ib\-dev\fR=\fIDEVICE\fR
+use IB device \fIDEVICE\fR (default first device found)
+.TP
+\fB\-i\fR, \fB\-\-ib\-port\fR=\fIPORT\fR
+use IB port \fIPORT\fR (default port 1)
+.TP
+\fB\-s\fR, \fB\-\-size\fR=\fISIZE\fR
+ping-pong messages of size \fISIZE\fR (default 4096)
+.TP
+\fB\-m\fR, \fB\-\-mtu\fR=\fISIZE\fR
+path MTU \fISIZE\fR (default 1024)
+.TP
+\fB\-n\fR, \fB\-\-iters\fR=\fIITERS\fR
+perform \fIITERS\fR message exchanges (default 1000)
+.TP
+\fB\-g\fR, \fB\-\-gid-idx\fR=\fIGIDINDEX\fR
+local port \fIGIDINDEX\fR
+.TP
+\fB\-c\fR, \fB\-\-chk\fR
+validate received buffer
+
+.SH SEE ALSO
+.BR ibv_uc_pingpong (1),
+.BR ibv_ud_pingpong (1),
+.BR ibv_srq_pingpong (1),
+.BR ibv_xsrq_pingpong (1),
+.BR ibv_rc_pingpong (1)
+
+.SH AUTHORS
+.TP
+Animesh Kishore
+.RI < animesh.kishore@xxxxxxxxx >
+
+.SH BUGS
+The network synchronization between client and server instances is
+weak, and does not prevent incompatible options from being used on the
+two instances. The method used for retrieving work completions is not
+strictly correct, and race conditions may cause failures on some
+systems.
--
2.25.1
