diff options
Diffstat (limited to 'engines/rdma.c')
| -rw-r--r-- | engines/rdma.c | 1372 |
1 files changed, 0 insertions, 1372 deletions
diff --git a/engines/rdma.c b/engines/rdma.c deleted file mode 100644 index 10e60dc8..00000000 --- a/engines/rdma.c +++ /dev/null @@ -1,1372 +0,0 @@ -/* - * RDMA I/O engine - * - * RDMA I/O engine based on the IB verbs and RDMA/CM user space libraries. - * Supports both RDMA memory semantics and channel semantics - * for the InfiniBand, RoCE and iWARP protocols. - * - * You will need the Linux RDMA software installed, either - * from your Linux distributor or directly from openfabrics.org: - * - * http://www.openfabrics.org/downloads/OFED/ - * - * Exchanging steps of RDMA ioengine control messages: - * 1. client side sends test mode (RDMA_WRITE/RDMA_READ/SEND) - * to server side. - * 2. server side parses test mode, and sends back confirmation - * to client side. In RDMA WRITE/READ test, this confirmation - * includes memory information, such as rkey, address. - * 3. client side initiates test loop. - * 4. In RDMA WRITE/READ test, client side sends a completion - * notification to server side. Server side updates its - * td->done as true. - * - */ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <assert.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <sys/poll.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/resource.h> - -#include <pthread.h> -#include <inttypes.h> - -#include "../fio.h" -#include "../hash.h" -#include "../optgroup.h" - -#include <rdma/rdma_cma.h> -#include <infiniband/arch.h> - -#define FIO_RDMA_MAX_IO_DEPTH 512 - -enum rdma_io_mode { - FIO_RDMA_UNKNOWN = 0, - FIO_RDMA_MEM_WRITE, - FIO_RDMA_MEM_READ, - FIO_RDMA_CHA_SEND, - FIO_RDMA_CHA_RECV -}; - -struct rdmaio_options { - struct thread_data *td; - unsigned int port; - enum rdma_io_mode verb; -}; - -static int str_hostname_cb(void *data, const char *input) -{ - struct rdmaio_options *o = data; - - if (o->td->o.filename) - free(o->td->o.filename); - o->td->o.filename = strdup(input); - return 0; -} - -static struct fio_option options[] = { - { - .name = "hostname", - .lname = "rdma engine hostname", - .type = FIO_OPT_STR_STORE, - .cb = str_hostname_cb, - .help = "Hostname for RDMA IO engine", - .category = FIO_OPT_C_ENGINE, - .group = FIO_OPT_G_RDMA, - }, - { - .name = "port", - .lname = "rdma engine port", - .type = FIO_OPT_INT, - .off1 = offsetof(struct rdmaio_options, port), - .minval = 1, - .maxval = 65535, - .help = "Port to use for RDMA connections", - .category = FIO_OPT_C_ENGINE, - .group = FIO_OPT_G_RDMA, - }, - { - .name = "verb", - .lname = "RDMA engine verb", - .alias = "proto", - .type = FIO_OPT_STR, - .off1 = offsetof(struct rdmaio_options, verb), - .help = "RDMA engine verb", - .def = "write", - .posval = { - { .ival = "write", - .oval = FIO_RDMA_MEM_WRITE, - .help = "Memory Write", - }, - { .ival = "read", - .oval = FIO_RDMA_MEM_READ, - .help = "Memory Read", - }, - { .ival = "send", - .oval = FIO_RDMA_CHA_SEND, - .help = "Posted Send", - }, - { .ival = "recv", - .oval = FIO_RDMA_CHA_RECV, - .help = "Posted Receive", - }, - }, - .category = FIO_OPT_C_ENGINE, - .group = FIO_OPT_G_RDMA, - }, - { - .name = NULL, - }, -}; - -struct remote_u { - uint64_t buf; - uint32_t rkey; - uint32_t size; -}; - -struct rdma_info_blk { - uint32_t mode; /* channel semantic or memory semantic */ - uint32_t nr; /* client: io depth - server: number of records for memory semantic - */ - uint32_t max_bs; /* maximum block size */ - struct remote_u rmt_us[FIO_RDMA_MAX_IO_DEPTH]; -}; - -struct rdma_io_u_data { - uint64_t wr_id; - struct ibv_send_wr sq_wr; - struct ibv_recv_wr rq_wr; - struct ibv_sge rdma_sgl; -}; - -struct rdmaio_data { - int is_client; - enum rdma_io_mode rdma_protocol; - char host[64]; - struct sockaddr_in addr; - - struct ibv_recv_wr rq_wr; - struct ibv_sge recv_sgl; - struct rdma_info_blk recv_buf; - struct ibv_mr *recv_mr; - - struct ibv_send_wr sq_wr; - struct ibv_sge send_sgl; - struct rdma_info_blk send_buf; - struct ibv_mr *send_mr; - - struct ibv_comp_channel *channel; - struct ibv_cq *cq; - struct ibv_pd *pd; - struct ibv_qp *qp; - - pthread_t cmthread; - struct rdma_event_channel *cm_channel; - struct rdma_cm_id *cm_id; - struct rdma_cm_id *child_cm_id; - - int cq_event_num; - - struct remote_u *rmt_us; - int rmt_nr; - struct io_u **io_us_queued; - int io_u_queued_nr; - struct io_u **io_us_flight; - int io_u_flight_nr; - struct io_u **io_us_completed; - int io_u_completed_nr; - - struct frand_state rand_state; -}; - -static int client_recv(struct thread_data *td, struct ibv_wc *wc) -{ - struct rdmaio_data *rd = td->io_ops_data; - unsigned int max_bs; - - if (wc->byte_len != sizeof(rd->recv_buf)) { - log_err("Received bogus data, size %d\n", wc->byte_len); - return 1; - } - - max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); - if (max_bs > ntohl(rd->recv_buf.max_bs)) { - log_err("fio: Server's block size (%d) must be greater than or " - "equal to the client's block size (%d)!\n", - ntohl(rd->recv_buf.max_bs), max_bs); - return 1; - } - - /* store mr info for MEMORY semantic */ - if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || - (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { - /* struct flist_head *entry; */ - int i = 0; - - rd->rmt_nr = ntohl(rd->recv_buf.nr); - - for (i = 0; i < rd->rmt_nr; i++) { - rd->rmt_us[i].buf = ntohll(rd->recv_buf.rmt_us[i].buf); - rd->rmt_us[i].rkey = ntohl(rd->recv_buf.rmt_us[i].rkey); - rd->rmt_us[i].size = ntohl(rd->recv_buf.rmt_us[i].size); - - dprint(FD_IO, - "fio: Received rkey %x addr %" PRIx64 - " len %d from peer\n", rd->rmt_us[i].rkey, - rd->rmt_us[i].buf, rd->rmt_us[i].size); - } - } - - return 0; -} - -static int server_recv(struct thread_data *td, struct ibv_wc *wc) -{ - struct rdmaio_data *rd = td->io_ops_data; - unsigned int max_bs; - - if (wc->wr_id == FIO_RDMA_MAX_IO_DEPTH) { - rd->rdma_protocol = ntohl(rd->recv_buf.mode); - - /* CHANNEL semantic, do nothing */ - if (rd->rdma_protocol == FIO_RDMA_CHA_SEND) - rd->rdma_protocol = FIO_RDMA_CHA_RECV; - - max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); - if (max_bs < ntohl(rd->recv_buf.max_bs)) { - log_err("fio: Server's block size (%d) must be greater than or " - "equal to the client's block size (%d)!\n", - ntohl(rd->recv_buf.max_bs), max_bs); - return 1; - } - - } - - return 0; -} - -static int cq_event_handler(struct thread_data *td, enum ibv_wc_opcode opcode) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_wc wc; - struct rdma_io_u_data *r_io_u_d; - int ret; - int compevnum = 0; - int i; - - while ((ret = ibv_poll_cq(rd->cq, 1, &wc)) == 1) { - ret = 0; - compevnum++; - - if (wc.status) { - log_err("fio: cq completion status %d(%s)\n", - wc.status, ibv_wc_status_str(wc.status)); - return -1; - } - - switch (wc.opcode) { - - case IBV_WC_RECV: - if (rd->is_client == 1) - ret = client_recv(td, &wc); - else - ret = server_recv(td, &wc); - - if (ret) - return -1; - - if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) - break; - - for (i = 0; i < rd->io_u_flight_nr; i++) { - r_io_u_d = rd->io_us_flight[i]->engine_data; - - if (wc.wr_id == r_io_u_d->rq_wr.wr_id) { - rd->io_us_flight[i]->resid = - rd->io_us_flight[i]->buflen - - wc.byte_len; - - rd->io_us_flight[i]->error = 0; - - rd->io_us_completed[rd-> - io_u_completed_nr] - = rd->io_us_flight[i]; - rd->io_u_completed_nr++; - break; - } - } - if (i == rd->io_u_flight_nr) - log_err("fio: recv wr %" PRId64 " not found\n", - wc.wr_id); - else { - /* put the last one into middle of the list */ - rd->io_us_flight[i] = - rd->io_us_flight[rd->io_u_flight_nr - 1]; - rd->io_u_flight_nr--; - } - - break; - - case IBV_WC_SEND: - case IBV_WC_RDMA_WRITE: - case IBV_WC_RDMA_READ: - if (wc.wr_id == FIO_RDMA_MAX_IO_DEPTH) - break; - - for (i = 0; i < rd->io_u_flight_nr; i++) { - r_io_u_d = rd->io_us_flight[i]->engine_data; - - if (wc.wr_id == r_io_u_d->sq_wr.wr_id) { - rd->io_us_completed[rd-> - io_u_completed_nr] - = rd->io_us_flight[i]; - rd->io_u_completed_nr++; - break; - } - } - if (i == rd->io_u_flight_nr) - log_err("fio: send wr %" PRId64 " not found\n", - wc.wr_id); - else { - /* put the last one into middle of the list */ - rd->io_us_flight[i] = - rd->io_us_flight[rd->io_u_flight_nr - 1]; - rd->io_u_flight_nr--; - } - - break; - - default: - log_info("fio: unknown completion event %d\n", - wc.opcode); - return -1; - } - rd->cq_event_num++; - } - - if (ret) { - log_err("fio: poll error %d\n", ret); - return 1; - } - - return compevnum; -} - -/* - * Return -1 for error and 'nr events' for a positive number - * of events - */ -static int rdma_poll_wait(struct thread_data *td, enum ibv_wc_opcode opcode) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_cq *ev_cq; - void *ev_ctx; - int ret; - - if (rd->cq_event_num > 0) { /* previous left */ - rd->cq_event_num--; - return 0; - } - -again: - if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { - log_err("fio: Failed to get cq event!\n"); - return -1; - } - if (ev_cq != rd->cq) { - log_err("fio: Unknown CQ!\n"); - return -1; - } - if (ibv_req_notify_cq(rd->cq, 0) != 0) { - log_err("fio: Failed to set notify!\n"); - return -1; - } - - ret = cq_event_handler(td, opcode); - if (ret == 0) - goto again; - - ibv_ack_cq_events(rd->cq, ret); - - rd->cq_event_num--; - - return ret; -} - -static int fio_rdmaio_setup_qp(struct thread_data *td) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_qp_init_attr init_attr; - int qp_depth = td->o.iodepth * 2; /* 2 times of io depth */ - - if (rd->is_client == 0) - rd->pd = ibv_alloc_pd(rd->child_cm_id->verbs); - else - rd->pd = ibv_alloc_pd(rd->cm_id->verbs); - - if (rd->pd == NULL) { - log_err("fio: ibv_alloc_pd fail: %m\n"); - return 1; - } - - if (rd->is_client == 0) - rd->channel = ibv_create_comp_channel(rd->child_cm_id->verbs); - else - rd->channel = ibv_create_comp_channel(rd->cm_id->verbs); - if (rd->channel == NULL) { - log_err("fio: ibv_create_comp_channel fail: %m\n"); - goto err1; - } - - if (qp_depth < 16) - qp_depth = 16; - - if (rd->is_client == 0) - rd->cq = ibv_create_cq(rd->child_cm_id->verbs, - qp_depth, rd, rd->channel, 0); - else - rd->cq = ibv_create_cq(rd->cm_id->verbs, - qp_depth, rd, rd->channel, 0); - if (rd->cq == NULL) { - log_err("fio: ibv_create_cq failed: %m\n"); - goto err2; - } - - if (ibv_req_notify_cq(rd->cq, 0) != 0) { - log_err("fio: ibv_req_notify_cq failed: %m\n"); - goto err3; - } - - /* create queue pair */ - memset(&init_attr, 0, sizeof(init_attr)); - init_attr.cap.max_send_wr = qp_depth; - init_attr.cap.max_recv_wr = qp_depth; - init_attr.cap.max_recv_sge = 1; - init_attr.cap.max_send_sge = 1; - init_attr.qp_type = IBV_QPT_RC; - init_attr.send_cq = rd->cq; - init_attr.recv_cq = rd->cq; - - if (rd->is_client == 0) { - if (rdma_create_qp(rd->child_cm_id, rd->pd, &init_attr) != 0) { - log_err("fio: rdma_create_qp failed: %m\n"); - goto err3; - } - rd->qp = rd->child_cm_id->qp; - } else { - if (rdma_create_qp(rd->cm_id, rd->pd, &init_attr) != 0) { - log_err("fio: rdma_create_qp failed: %m\n"); - goto err3; - } - rd->qp = rd->cm_id->qp; - } - - return 0; - -err3: - ibv_destroy_cq(rd->cq); -err2: - ibv_destroy_comp_channel(rd->channel); -err1: - ibv_dealloc_pd(rd->pd); - - return 1; -} - -static int fio_rdmaio_setup_control_msg_buffers(struct thread_data *td) -{ - struct rdmaio_data *rd = td->io_ops_data; - - rd->recv_mr = ibv_reg_mr(rd->pd, &rd->recv_buf, sizeof(rd->recv_buf), - IBV_ACCESS_LOCAL_WRITE); - if (rd->recv_mr == NULL) { - log_err("fio: recv_buf reg_mr failed: %m\n"); - return 1; - } - - rd->send_mr = ibv_reg_mr(rd->pd, &rd->send_buf, sizeof(rd->send_buf), - 0); - if (rd->send_mr == NULL) { - log_err("fio: send_buf reg_mr failed: %m\n"); - ibv_dereg_mr(rd->recv_mr); - return 1; - } - - /* setup work request */ - /* recv wq */ - rd->recv_sgl.addr = (uint64_t) (unsigned long)&rd->recv_buf; - rd->recv_sgl.length = sizeof(rd->recv_buf); - rd->recv_sgl.lkey = rd->recv_mr->lkey; - rd->rq_wr.sg_list = &rd->recv_sgl; - rd->rq_wr.num_sge = 1; - rd->rq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; - - /* send wq */ - rd->send_sgl.addr = (uint64_t) (unsigned long)&rd->send_buf; - rd->send_sgl.length = sizeof(rd->send_buf); - rd->send_sgl.lkey = rd->send_mr->lkey; - - rd->sq_wr.opcode = IBV_WR_SEND; - rd->sq_wr.send_flags = IBV_SEND_SIGNALED; - rd->sq_wr.sg_list = &rd->send_sgl; - rd->sq_wr.num_sge = 1; - rd->sq_wr.wr_id = FIO_RDMA_MAX_IO_DEPTH; - - return 0; -} - -static int get_next_channel_event(struct thread_data *td, - struct rdma_event_channel *channel, - enum rdma_cm_event_type wait_event) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct rdma_cm_event *event; - int ret; - - ret = rdma_get_cm_event(channel, &event); - if (ret) { - log_err("fio: rdma_get_cm_event: %d\n", ret); - return 1; - } - - if (event->event != wait_event) { - log_err("fio: event is %s instead of %s\n", - rdma_event_str(event->event), - rdma_event_str(wait_event)); - return 1; - } - - switch (event->event) { - case RDMA_CM_EVENT_CONNECT_REQUEST: - rd->child_cm_id = event->id; - break; - default: - break; - } - - rdma_ack_cm_event(event); - - return 0; -} - -static int fio_rdmaio_prep(struct thread_data *td, struct io_u *io_u) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct rdma_io_u_data *r_io_u_d; - - r_io_u_d = io_u->engine_data; - - switch (rd->rdma_protocol) { - case FIO_RDMA_MEM_WRITE: - case FIO_RDMA_MEM_READ: - r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; - r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; - r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; - r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; - r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; - r_io_u_d->sq_wr.num_sge = 1; - break; - case FIO_RDMA_CHA_SEND: - r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; - r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; - r_io_u_d->rdma_sgl.length = io_u->buflen; - r_io_u_d->sq_wr.wr_id = r_io_u_d->wr_id; - r_io_u_d->sq_wr.opcode = IBV_WR_SEND; - r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; - r_io_u_d->sq_wr.sg_list = &r_io_u_d->rdma_sgl; - r_io_u_d->sq_wr.num_sge = 1; - break; - case FIO_RDMA_CHA_RECV: - r_io_u_d->rdma_sgl.addr = (uint64_t) (unsigned long)io_u->buf; - r_io_u_d->rdma_sgl.lkey = io_u->mr->lkey; - r_io_u_d->rdma_sgl.length = io_u->buflen; - r_io_u_d->rq_wr.wr_id = r_io_u_d->wr_id; - r_io_u_d->rq_wr.sg_list = &r_io_u_d->rdma_sgl; - r_io_u_d->rq_wr.num_sge = 1; - break; - default: - log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); - break; - } - - return 0; -} - -static struct io_u *fio_rdmaio_event(struct thread_data *td, int event) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct io_u *io_u; - int i; - - io_u = rd->io_us_completed[0]; - for (i = 0; i < rd->io_u_completed_nr - 1; i++) - rd->io_us_completed[i] = rd->io_us_completed[i + 1]; - - rd->io_u_completed_nr--; - - dprint_io_u(io_u, "fio_rdmaio_event"); - - return io_u; -} - -static int fio_rdmaio_getevents(struct thread_data *td, unsigned int min, - unsigned int max, const struct timespec *t) -{ - struct rdmaio_data *rd = td->io_ops_data; - enum ibv_wc_opcode comp_opcode; - struct ibv_cq *ev_cq; - void *ev_ctx; - int ret, r = 0; - comp_opcode = IBV_WC_RDMA_WRITE; - - switch (rd->rdma_protocol) { - case FIO_RDMA_MEM_WRITE: - comp_opcode = IBV_WC_RDMA_WRITE; - break; - case FIO_RDMA_MEM_READ: - comp_opcode = IBV_WC_RDMA_READ; - break; - case FIO_RDMA_CHA_SEND: - comp_opcode = IBV_WC_SEND; - break; - case FIO_RDMA_CHA_RECV: - comp_opcode = IBV_WC_RECV; - break; - default: - log_err("fio: unknown rdma protocol - %d\n", rd->rdma_protocol); - break; - } - - if (rd->cq_event_num > 0) { /* previous left */ - rd->cq_event_num--; - return 0; - } - -again: - if (ibv_get_cq_event(rd->channel, &ev_cq, &ev_ctx) != 0) { - log_err("fio: Failed to get cq event!\n"); - return -1; - } - if (ev_cq != rd->cq) { - log_err("fio: Unknown CQ!\n"); - return -1; - } - if (ibv_req_notify_cq(rd->cq, 0) != 0) { - log_err("fio: Failed to set notify!\n"); - return -1; - } - - ret = cq_event_handler(td, comp_opcode); - if (ret < 1) - goto again; - - ibv_ack_cq_events(rd->cq, ret); - - r += ret; - if (r < min) - goto again; - - rd->cq_event_num -= r; - - return r; -} - -static int fio_rdmaio_send(struct thread_data *td, struct io_u **io_us, - unsigned int nr) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_send_wr *bad_wr; -#if 0 - enum ibv_wc_opcode comp_opcode; - comp_opcode = IBV_WC_RDMA_WRITE; -#endif - int i; - long index; - struct rdma_io_u_data *r_io_u_d; - - r_io_u_d = NULL; - - for (i = 0; i < nr; i++) { - /* RDMA_WRITE or RDMA_READ */ - switch (rd->rdma_protocol) { - case FIO_RDMA_MEM_WRITE: - /* compose work request */ - r_io_u_d = io_us[i]->engine_data; - index = __rand(&rd->rand_state) % rd->rmt_nr; - r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_WRITE; - r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; - r_io_u_d->sq_wr.wr.rdma.remote_addr = \ - rd->rmt_us[index].buf; - r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; - break; - case FIO_RDMA_MEM_READ: - /* compose work request */ - r_io_u_d = io_us[i]->engine_data; - index = __rand(&rd->rand_state) % rd->rmt_nr; - r_io_u_d->sq_wr.opcode = IBV_WR_RDMA_READ; - r_io_u_d->sq_wr.wr.rdma.rkey = rd->rmt_us[index].rkey; - r_io_u_d->sq_wr.wr.rdma.remote_addr = \ - rd->rmt_us[index].buf; - r_io_u_d->sq_wr.sg_list->length = io_us[i]->buflen; - break; - case FIO_RDMA_CHA_SEND: - r_io_u_d = io_us[i]->engine_data; - r_io_u_d->sq_wr.opcode = IBV_WR_SEND; - r_io_u_d->sq_wr.send_flags = IBV_SEND_SIGNALED; - break; - default: - log_err("fio: unknown rdma protocol - %d\n", - rd->rdma_protocol); - break; - } - - if (ibv_post_send(rd->qp, &r_io_u_d->sq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_send fail: %m\n"); - return -1; - } - - dprint_io_u(io_us[i], "fio_rdmaio_send"); - } - - /* wait for completion - rdma_poll_wait(td, comp_opcode); */ - - return i; -} - -static int fio_rdmaio_recv(struct thread_data *td, struct io_u **io_us, - unsigned int nr) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_recv_wr *bad_wr; - struct rdma_io_u_data *r_io_u_d; - int i; - - i = 0; - if (rd->rdma_protocol == FIO_RDMA_CHA_RECV) { - /* post io_u into recv queue */ - for (i = 0; i < nr; i++) { - r_io_u_d = io_us[i]->engine_data; - if (ibv_post_recv(rd->qp, &r_io_u_d->rq_wr, &bad_wr) != - 0) { - log_err("fio: ibv_post_recv fail: %m\n"); - return 1; - } - } - } else if ((rd->rdma_protocol == FIO_RDMA_MEM_READ) - || (rd->rdma_protocol == FIO_RDMA_MEM_WRITE)) { - /* re-post the rq_wr */ - if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_recv fail: %m\n"); - return 1; - } - - rdma_poll_wait(td, IBV_WC_RECV); - - dprint(FD_IO, "fio: recv FINISH message\n"); - td->done = 1; - return 0; - } - - return i; -} - -static int fio_rdmaio_queue(struct thread_data *td, struct io_u *io_u) -{ - struct rdmaio_data *rd = td->io_ops_data; - - fio_ro_check(td, io_u); - - if (rd->io_u_queued_nr == (int)td->o.iodepth) - return FIO_Q_BUSY; - - rd->io_us_queued[rd->io_u_queued_nr] = io_u; - rd->io_u_queued_nr++; - - dprint_io_u(io_u, "fio_rdmaio_queue"); - - return FIO_Q_QUEUED; -} - -static void fio_rdmaio_queued(struct thread_data *td, struct io_u **io_us, - unsigned int nr) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct timeval now; - unsigned int i; - - if (!fio_fill_issue_time(td)) - return; - - fio_gettime(&now, NULL); - - for (i = 0; i < nr; i++) { - struct io_u *io_u = io_us[i]; - - /* queued -> flight */ - rd->io_us_flight[rd->io_u_flight_nr] = io_u; - rd->io_u_flight_nr++; - - memcpy(&io_u->issue_time, &now, sizeof(now)); - io_u_queued(td, io_u); - } -} - -static int fio_rdmaio_commit(struct thread_data *td) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct io_u **io_us; - int ret; - - if (!rd->io_us_queued) - return 0; - - io_us = rd->io_us_queued; - do { - /* RDMA_WRITE or RDMA_READ */ - if (rd->is_client) - ret = fio_rdmaio_send(td, io_us, rd->io_u_queued_nr); - else if (!rd->is_client) - ret = fio_rdmaio_recv(td, io_us, rd->io_u_queued_nr); - else - ret = 0; /* must be a SYNC */ - - if (ret > 0) { - fio_rdmaio_queued(td, io_us, ret); - io_u_mark_submit(td, ret); - rd->io_u_queued_nr -= ret; - io_us += ret; - ret = 0; - } else - break; - } while (rd->io_u_queued_nr); - - return ret; -} - -static int fio_rdmaio_connect(struct thread_data *td, struct fio_file *f) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct rdma_conn_param conn_param; - struct ibv_send_wr *bad_wr; - - memset(&conn_param, 0, sizeof(conn_param)); - conn_param.responder_resources = 1; - conn_param.initiator_depth = 1; - conn_param.retry_count = 10; - - if (rdma_connect(rd->cm_id, &conn_param) != 0) { - log_err("fio: rdma_connect fail: %m\n"); - return 1; - } - - if (get_next_channel_event - (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { - log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); - return 1; - } - - /* send task request */ - rd->send_buf.mode = htonl(rd->rdma_protocol); - rd->send_buf.nr = htonl(td->o.iodepth); - - if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_send fail: %m\n"); - return 1; - } - - if (rdma_poll_wait(td, IBV_WC_SEND) < 0) - return 1; - - /* wait for remote MR info from server side */ - if (rdma_poll_wait(td, IBV_WC_RECV) < 0) - return 1; - - /* In SEND/RECV test, it's a good practice to setup the iodepth of - * of the RECV side deeper than that of the SEND side to - * avoid RNR (receiver not ready) error. The - * SEND side may send so many unsolicited message before - * RECV side commits sufficient recv buffers into recv queue. - * This may lead to RNR error. Here, SEND side pauses for a while - * during which RECV side commits sufficient recv buffers. - */ - usleep(500000); - - return 0; -} - -static int fio_rdmaio_accept(struct thread_data *td, struct fio_file *f) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct rdma_conn_param conn_param; - struct ibv_send_wr *bad_wr; - int ret = 0; - - /* rdma_accept() - then wait for accept success */ - memset(&conn_param, 0, sizeof(conn_param)); - conn_param.responder_resources = 1; - conn_param.initiator_depth = 1; - - if (rdma_accept(rd->child_cm_id, &conn_param) != 0) { - log_err("fio: rdma_accept: %m\n"); - return 1; - } - - if (get_next_channel_event - (td, rd->cm_channel, RDMA_CM_EVENT_ESTABLISHED) != 0) { - log_err("fio: wait for RDMA_CM_EVENT_ESTABLISHED\n"); - return 1; - } - - /* wait for request */ - ret = rdma_poll_wait(td, IBV_WC_RECV) < 0; - - if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_send fail: %m\n"); - return 1; - } - - if (rdma_poll_wait(td, IBV_WC_SEND) < 0) - return 1; - - return ret; -} - -static int fio_rdmaio_open_file(struct thread_data *td, struct fio_file *f) -{ - if (td_read(td)) - return fio_rdmaio_accept(td, f); - else - return fio_rdmaio_connect(td, f); -} - -static int fio_rdmaio_close_file(struct thread_data *td, struct fio_file *f) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_send_wr *bad_wr; - - /* unregister rdma buffer */ - - /* - * Client sends notification to the server side - */ - /* refer to: http://linux.die.net/man/7/rdma_cm */ - if ((rd->is_client == 1) && ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) - || (rd->rdma_protocol == - FIO_RDMA_MEM_READ))) { - if (ibv_post_send(rd->qp, &rd->sq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_send fail: %m\n"); - return 1; - } - - dprint(FD_IO, "fio: close information sent success\n"); - rdma_poll_wait(td, IBV_WC_SEND); - } - - if (rd->is_client == 1) - rdma_disconnect(rd->cm_id); - else { - rdma_disconnect(rd->child_cm_id); -#if 0 - rdma_disconnect(rd->cm_id); -#endif - } - -#if 0 - if (get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_DISCONNECTED) != 0) { - log_err("fio: wait for RDMA_CM_EVENT_DISCONNECTED\n"); - return 1; - } -#endif - - ibv_destroy_cq(rd->cq); - ibv_destroy_qp(rd->qp); - - if (rd->is_client == 1) - rdma_destroy_id(rd->cm_id); - else { - rdma_destroy_id(rd->child_cm_id); - rdma_destroy_id(rd->cm_id); - } - - ibv_destroy_comp_channel(rd->channel); - ibv_dealloc_pd(rd->pd); - - return 0; -} - -static int fio_rdmaio_setup_connect(struct thread_data *td, const char *host, - unsigned short port) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_recv_wr *bad_wr; - int err; - - rd->addr.sin_family = AF_INET; - rd->addr.sin_port = htons(port); - - if (inet_aton(host, &rd->addr.sin_addr) != 1) { - struct hostent *hent; - - hent = gethostbyname(host); - if (!hent) { - td_verror(td, errno, "gethostbyname"); - return 1; - } - - memcpy(&rd->addr.sin_addr, hent->h_addr, 4); - } - - /* resolve route */ - err = rdma_resolve_addr(rd->cm_id, NULL, (struct sockaddr *)&rd->addr, 2000); - if (err != 0) { - log_err("fio: rdma_resolve_addr: %d\n", err); - return 1; - } - - err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ADDR_RESOLVED); - if (err != 0) { - log_err("fio: get_next_channel_event: %d\n", err); - return 1; - } - - /* resolve route */ - err = rdma_resolve_route(rd->cm_id, 2000); - if (err != 0) { - log_err("fio: rdma_resolve_route: %d\n", err); - return 1; - } - - err = get_next_channel_event(td, rd->cm_channel, RDMA_CM_EVENT_ROUTE_RESOLVED); - if (err != 0) { - log_err("fio: get_next_channel_event: %d\n", err); - return 1; - } - - /* create qp and buffer */ - if (fio_rdmaio_setup_qp(td) != 0) - return 1; - - if (fio_rdmaio_setup_control_msg_buffers(td) != 0) - return 1; - - /* post recv buf */ - err = ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr); - if (err != 0) { - log_err("fio: ibv_post_recv fail: %d\n", err); - return 1; - } - - return 0; -} - -static int fio_rdmaio_setup_listen(struct thread_data *td, short port) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct ibv_recv_wr *bad_wr; - int state = td->runstate; - - td_set_runstate(td, TD_SETTING_UP); - - rd->addr.sin_family = AF_INET; - rd->addr.sin_addr.s_addr = htonl(INADDR_ANY); - rd->addr.sin_port = htons(port); - - /* rdma_listen */ - if (rdma_bind_addr(rd->cm_id, (struct sockaddr *)&rd->addr) != 0) { - log_err("fio: rdma_bind_addr fail: %m\n"); - return 1; - } - - if (rdma_listen(rd->cm_id, 3) != 0) { - log_err("fio: rdma_listen fail: %m\n"); - return 1; - } - - log_info("fio: waiting for connection\n"); - - /* wait for CONNECT_REQUEST */ - if (get_next_channel_event - (td, rd->cm_channel, RDMA_CM_EVENT_CONNECT_REQUEST) != 0) { - log_err("fio: wait for RDMA_CM_EVENT_CONNECT_REQUEST\n"); - return 1; - } - - if (fio_rdmaio_setup_qp(td) != 0) - return 1; - - if (fio_rdmaio_setup_control_msg_buffers(td) != 0) - return 1; - - /* post recv buf */ - if (ibv_post_recv(rd->qp, &rd->rq_wr, &bad_wr) != 0) { - log_err("fio: ibv_post_recv fail: %m\n"); - return 1; - } - - td_set_runstate(td, state); - return 0; -} - -static int check_set_rlimits(struct thread_data *td) -{ -#ifdef CONFIG_RLIMIT_MEMLOCK - struct rlimit rl; - - /* check RLIMIT_MEMLOCK */ - if (getrlimit(RLIMIT_MEMLOCK, &rl) != 0) { - log_err("fio: getrlimit fail: %d(%s)\n", - errno, strerror(errno)); - return 1; - } - - /* soft limit */ - if ((rl.rlim_cur != RLIM_INFINITY) - && (rl.rlim_cur < td->orig_buffer_size)) { - log_err("fio: soft RLIMIT_MEMLOCK is: %" PRId64 "\n", - rl.rlim_cur); - log_err("fio: total block size is: %zd\n", - td->orig_buffer_size); - /* try to set larger RLIMIT_MEMLOCK */ - rl.rlim_cur = rl.rlim_max; - if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { - log_err("fio: setrlimit fail: %d(%s)\n", - errno, strerror(errno)); - log_err("fio: you may try enlarge MEMLOCK by root\n"); - log_err("# ulimit -l unlimited\n"); - return 1; - } - } -#endif - - return 0; -} - -static int compat_options(struct thread_data *td) -{ - // The original RDMA engine had an ugly / seperator - // on the filename for it's options. This function - // retains backwards compatibility with it.100 - - struct rdmaio_options *o = td->eo; - char *modep, *portp; - char *filename = td->o.filename; - - if (!filename) - return 0; - - portp = strchr(filename, '/'); - if (portp == NULL) - return 0; - - *portp = '\0'; - portp++; - - o->port = strtol(portp, NULL, 10); - if (!o->port || o->port > 65535) - goto bad_host; - - modep = strchr(portp, '/'); - if (modep != NULL) { - *modep = '\0'; - modep++; - } - - if (modep) { - if (!strncmp("rdma_write", modep, strlen(modep)) || - !strncmp("RDMA_WRITE", modep, strlen(modep))) - o->verb = FIO_RDMA_MEM_WRITE; - else if (!strncmp("rdma_read", modep, strlen(modep)) || - !strncmp("RDMA_READ", modep, strlen(modep))) - o->verb = FIO_RDMA_MEM_READ; - else if (!strncmp("send", modep, strlen(modep)) || - !strncmp("SEND", modep, strlen(modep))) - o->verb = FIO_RDMA_CHA_SEND; - else - goto bad_host; - } else - o->verb = FIO_RDMA_MEM_WRITE; - - - return 0; - -bad_host: - log_err("fio: bad rdma host/port/protocol: %s\n", td->o.filename); - return 1; -} - -static int fio_rdmaio_init(struct thread_data *td) -{ - struct rdmaio_data *rd = td->io_ops_data; - struct rdmaio_options *o = td->eo; - unsigned int max_bs; - int ret, i; - - if (td_rw(td)) { - log_err("fio: rdma connections must be read OR write\n"); - return 1; - } - if (td_random(td)) { - log_err("fio: RDMA network IO can't be random\n"); - return 1; - } - - if (compat_options(td)) - return 1; - - if (!o->port) { - log_err("fio: no port has been specified which is required " - "for the rdma engine\n"); - return 1; - } - - if (check_set_rlimits(td)) - return 1; - - rd->rdma_protocol = o->verb; - rd->cq_event_num = 0; - - rd->cm_channel = rdma_create_event_channel(); - if (!rd->cm_channel) { - log_err("fio: rdma_create_event_channel fail: %m\n"); - return 1; - } - - ret = rdma_create_id(rd->cm_channel, &rd->cm_id, rd, RDMA_PS_TCP); - if (ret) { - log_err("fio: rdma_create_id fail: %m\n"); - return 1; - } - - if ((rd->rdma_protocol == FIO_RDMA_MEM_WRITE) || - (rd->rdma_protocol == FIO_RDMA_MEM_READ)) { - rd->rmt_us = - malloc(FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); - memset(rd->rmt_us, 0, - FIO_RDMA_MAX_IO_DEPTH * sizeof(struct remote_u)); - rd->rmt_nr = 0; - } - - rd->io_us_queued = malloc(td->o.iodepth * sizeof(struct io_u *)); - memset(rd->io_us_queued, 0, td->o.iodepth * sizeof(struct io_u *)); - rd->io_u_queued_nr = 0; - - rd->io_us_flight = malloc(td->o.iodepth * sizeof(struct io_u *)); - memset(rd->io_us_flight, 0, td->o.iodepth * sizeof(struct io_u *)); - rd->io_u_flight_nr = 0; - - rd->io_us_completed = malloc(td->o.iodepth * sizeof(struct io_u *)); - memset(rd->io_us_completed, 0, td->o.iodepth * sizeof(struct io_u *)); - rd->io_u_completed_nr = 0; - - if (td_read(td)) { /* READ as the server */ - rd->is_client = 0; - td->flags |= TD_F_NO_PROGRESS; - /* server rd->rdma_buf_len will be setup after got request */ - ret = fio_rdmaio_setup_listen(td, o->port); - } else { /* WRITE as the client */ - rd->is_client = 1; - ret = fio_rdmaio_setup_connect(td, td->o.filename, o->port); - } - - max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); - rd->send_buf.max_bs = htonl(max_bs); - - /* register each io_u in the free list */ - for (i = 0; i < td->io_u_freelist.nr; i++) { - struct io_u *io_u = td->io_u_freelist.io_us[i]; - - io_u->engine_data = malloc(sizeof(struct rdma_io_u_data)); - memset(io_u->engine_data, 0, sizeof(struct rdma_io_u_data)); - ((struct rdma_io_u_data *)io_u->engine_data)->wr_id = i; - - io_u->mr = ibv_reg_mr(rd->pd, io_u->buf, max_bs, - IBV_ACCESS_LOCAL_WRITE | - IBV_ACCESS_REMOTE_READ | - IBV_ACCESS_REMOTE_WRITE); - if (io_u->mr == NULL) { - log_err("fio: ibv_reg_mr io_u failed: %m\n"); - return 1; - } - - rd->send_buf.rmt_us[i].buf = - htonll((uint64_t) (unsigned long)io_u->buf); - rd->send_buf.rmt_us[i].rkey = htonl(io_u->mr->rkey); - rd->send_buf.rmt_us[i].size = htonl(max_bs); - -#if 0 - log_info("fio: Send rkey %x addr %" PRIx64 " len %d to client\n", io_u->mr->rkey, io_u->buf, max_bs); */ -#endif - } - - rd->send_buf.nr = htonl(i); - - return ret; -} - -static void fio_rdmaio_cleanup(struct thread_data *td) -{ - struct rdmaio_data *rd = td->io_ops_data; - - if (rd) - free(rd); -} - -static int fio_rdmaio_setup(struct thread_data *td) -{ - struct rdmaio_data *rd; - - if (!td->files_index) { - add_file(td, td->o.filename ?: "rdma", 0, 0); - td->o.nr_files = td->o.nr_files ?: 1; - td->o.open_files++; - } - - if (!td->io_ops_data) { - rd = malloc(sizeof(*rd)); - - memset(rd, 0, sizeof(*rd)); - init_rand_seed(&rd->rand_state, (unsigned int) GOLDEN_RATIO_PRIME, 0); - td->io_ops_data = rd; - } - - return 0; -} - -static struct ioengine_ops ioengine_rw = { - .name = "rdma", - .version = FIO_IOOPS_VERSION, - .setup = fio_rdmaio_setup, - .init = fio_rdmaio_init, - .prep = fio_rdmaio_prep, - .queue = fio_rdmaio_queue, - .commit = fio_rdmaio_commit, - .getevents = fio_rdmaio_getevents, - .event = fio_rdmaio_event, - .cleanup = fio_rdmaio_cleanup, - .open_file = fio_rdmaio_open_file, - .close_file = fio_rdmaio_close_file, - .flags = FIO_DISKLESSIO | FIO_UNIDIR | FIO_PIPEIO, - .options = options, - .option_struct_size = sizeof(struct rdmaio_options), -}; - -static void fio_init fio_rdmaio_register(void) -{ - register_ioengine(&ioengine_rw); -} - -static void fio_exit fio_rdmaio_unregister(void) -{ - unregister_ioengine(&ioengine_rw); -} |