diff options
Diffstat (limited to 'source4/cluster/ctdb/ib/ibwrapper.c')
| -rw-r--r-- | source4/cluster/ctdb/ib/ibwrapper.c | 1361 |
1 files changed, 0 insertions, 1361 deletions
diff --git a/source4/cluster/ctdb/ib/ibwrapper.c b/source4/cluster/ctdb/ib/ibwrapper.c deleted file mode 100644 index 31acbc4a2d..0000000000 --- a/source4/cluster/ctdb/ib/ibwrapper.c +++ /dev/null @@ -1,1361 +0,0 @@ -/* - * Unix SMB/CIFS implementation. - * Wrap Infiniband calls. - * - * Copyright (C) Sven Oehme <oehmes@de.ibm.com> 2006 - * - * Major code contributions by Peter Somogyi <psomogyi@gamax.hu> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include <stdlib.h> -#include <string.h> -#include <stdio.h> -#include <errno.h> -#include <sys/types.h> -#include <netinet/in.h> -#include <sys/socket.h> -#include <netdb.h> -#include <arpa/inet.h> -#include <malloc.h> -#include <assert.h> -#include <unistd.h> - -#include "includes.h" -#include "lib/events/events.h" -#include "ibwrapper.h" - -#include <infiniband/kern-abi.h> -#include <rdma/rdma_cma_abi.h> -#include <rdma/rdma_cma.h> - -#include "ibwrapper_internal.h" -#include "lib/util/dlinklist.h" - -#define IBW_LASTERR_BUFSIZE 512 -static char ibw_lasterr[IBW_LASTERR_BUFSIZE]; - -#define IBW_MAX_SEND_WR 256 -#define IBW_MAX_RECV_WR 1024 -#define IBW_RECV_BUFSIZE 256 -#define IBW_RECV_THRESHOLD (1 * 1024 * 1024) - -static void ibw_event_handler_verbs(struct event_context *ev, - struct fd_event *fde, uint16_t flags, void *private_data); -static int ibw_fill_cq(struct ibw_conn *conn); -static int ibw_wc_recv(struct ibw_conn *conn, struct ibv_wc *wc); -static int ibw_wc_send(struct ibw_conn *conn, struct ibv_wc *wc); -static int ibw_send_packet(struct ibw_conn *conn, void *buf, struct ibw_wr *p, uint32_t len); - -static void *ibw_alloc_mr(struct ibw_ctx_priv *pctx, struct ibw_conn_priv *pconn, - uint32_t n, struct ibv_mr **ppmr) -{ - void *buf; - - DEBUG(10, ("ibw_alloc_mr(cmid=%p, n=%u)\n", pconn->cm_id, n)); - buf = memalign(pctx->pagesize, n); - if (!buf) { - sprintf(ibw_lasterr, "couldn't allocate memory\n"); - return NULL; - } - - *ppmr = ibv_reg_mr(pconn->pd, buf, n, IBV_ACCESS_LOCAL_WRITE); - if (!*ppmr) { - sprintf(ibw_lasterr, "couldn't allocate mr\n"); - free(buf); - return NULL; - } - - return buf; -} - -static void ibw_free_mr(char **ppbuf, struct ibv_mr **ppmr) -{ - DEBUG(10, ("ibw_free_mr(%p %p)\n", *ppbuf, *ppmr)); - if (*ppmr!=NULL) { - ibv_dereg_mr(*ppmr); - *ppmr = NULL; - } - if (*ppbuf) { - free(*ppbuf); - *ppbuf = NULL; - } -} - -static int ibw_init_memory(struct ibw_conn *conn) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_opts *opts = &pctx->opts; - int i; - struct ibw_wr *p; - - DEBUG(10, ("ibw_init_memory(cmid: %p)\n", pconn->cm_id)); - pconn->buf_send = ibw_alloc_mr(pctx, pconn, - opts->max_send_wr * opts->recv_bufsize, &pconn->mr_send); - if (!pconn->buf_send) { - sprintf(ibw_lasterr, "couldn't allocate work send buf\n"); - return -1; - } - - pconn->buf_recv = ibw_alloc_mr(pctx, pconn, - opts->max_recv_wr * opts->recv_bufsize, &pconn->mr_recv); - if (!pconn->buf_recv) { - sprintf(ibw_lasterr, "couldn't allocate work recv buf\n"); - return -1; - } - - pconn->wr_index = talloc_size(pconn, opts->max_send_wr * sizeof(struct ibw_wr *)); - assert(pconn->wr_index!=NULL); - - for(i=0; i<opts->max_send_wr; i++) { - p = pconn->wr_index[i] = talloc_zero(pconn, struct ibw_wr); - p->buf = pconn->buf_send + (i * opts->recv_bufsize); - p->wr_id = i; - - DLIST_ADD(pconn->wr_list_avail, p); - } - - return 0; -} - -static int ibw_ctx_priv_destruct(struct ibw_ctx_priv *pctx) -{ - DEBUG(10, ("ibw_ctx_priv_destruct(%p)\n", pctx)); - - /* destroy cm */ - if (pctx->cm_channel) { - rdma_destroy_event_channel(pctx->cm_channel); - pctx->cm_channel = NULL; - } - if (pctx->cm_channel_event) { - /* TODO: do we have to do this here? */ - talloc_free(pctx->cm_channel_event); - pctx->cm_channel_event = NULL; - } - if (pctx->cm_id) { - rdma_destroy_id(pctx->cm_id); - pctx->cm_id = NULL; - } - - return 0; -} - -static int ibw_ctx_destruct(struct ibw_ctx *ctx) -{ - DEBUG(10, ("ibw_ctx_destruct(%p)\n", ctx)); - return 0; -} - -static int ibw_conn_priv_destruct(struct ibw_conn_priv *pconn) -{ - DEBUG(10, ("ibw_conn_priv_destruct(%p, cmid: %p)\n", - pconn, pconn->cm_id)); - - /* pconn->wr_index is freed by talloc */ - /* pconn->wr_index[i] are freed by talloc */ - - /* destroy verbs */ - if (pconn->cm_id!=NULL && pconn->cm_id->qp!=NULL) { - rdma_destroy_qp(pconn->cm_id); - pconn->cm_id->qp = NULL; - } - - if (pconn->cq!=NULL) { - ibv_destroy_cq(pconn->cq); - pconn->cq = NULL; - } - - if (pconn->verbs_channel!=NULL) { - ibv_destroy_comp_channel(pconn->verbs_channel); - pconn->verbs_channel = NULL; - } - - /* must be freed here because its order is important */ - if (pconn->verbs_channel_event) { - talloc_free(pconn->verbs_channel_event); - pconn->verbs_channel_event = NULL; - } - - /* free memory regions */ - ibw_free_mr(&pconn->buf_send, &pconn->mr_send); - ibw_free_mr(&pconn->buf_recv, &pconn->mr_recv); - - if (pconn->pd) { - ibv_dealloc_pd(pconn->pd); - pconn->pd = NULL; - DEBUG(10, ("pconn=%p pd deallocated\n", pconn)); - } - - if (pconn->cm_id) { - rdma_destroy_id(pconn->cm_id); - pconn->cm_id = NULL; - DEBUG(10, ("pconn=%p cm_id destroyed\n", pconn)); - } - - return 0; -} - -static int ibw_wr_destruct(struct ibw_wr *wr) -{ - if (wr->buf_large!=NULL) - ibw_free_mr(&wr->buf_large, &wr->mr_large); - return 0; -} - -static int ibw_conn_destruct(struct ibw_conn *conn) -{ - DEBUG(10, ("ibw_conn_destruct(%p)\n", conn)); - - /* important here: ctx is a talloc _parent_ */ - DLIST_REMOVE(conn->ctx->conn_list, conn); - return 0; -} - -struct ibw_conn *ibw_conn_new(struct ibw_ctx *ctx, TALLOC_CTX *mem_ctx) -{ - struct ibw_conn *conn; - struct ibw_conn_priv *pconn; - - assert(ctx!=NULL); - - conn = talloc_zero(mem_ctx, struct ibw_conn); - assert(conn!=NULL); - talloc_set_destructor(conn, ibw_conn_destruct); - - pconn = talloc_zero(conn, struct ibw_conn_priv); - assert(pconn!=NULL); - talloc_set_destructor(pconn, ibw_conn_priv_destruct); - - conn->ctx = ctx; - conn->internal = (void *)pconn; - - DLIST_ADD(ctx->conn_list, conn); - - return conn; -} - -static int ibw_setup_cq_qp(struct ibw_conn *conn) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibv_qp_init_attr init_attr; - struct ibv_qp_attr attr; - int rc; - - DEBUG(10, ("ibw_setup_cq_qp(cmid: %p)\n", pconn->cm_id)); - - /* init verbs */ - pconn->verbs_channel = ibv_create_comp_channel(pconn->cm_id->verbs); - if (!pconn->verbs_channel) { - sprintf(ibw_lasterr, "ibv_create_comp_channel failed %d\n", errno); - return -1; - } - DEBUG(10, ("created channel %p\n", pconn->verbs_channel)); - - pconn->verbs_channel_event = event_add_fd(pctx->ectx, NULL, /* not pconn or conn */ - pconn->verbs_channel->fd, EVENT_FD_READ, ibw_event_handler_verbs, conn); - - pconn->pd = ibv_alloc_pd(pconn->cm_id->verbs); - if (!pconn->pd) { - sprintf(ibw_lasterr, "ibv_alloc_pd failed %d\n", errno); - return -1; - } - DEBUG(10, ("created pd %p\n", pconn->pd)); - - /* init mr */ - if (ibw_init_memory(conn)) - return -1; - - /* init cq */ - pconn->cq = ibv_create_cq(pconn->cm_id->verbs, - pctx->opts.max_recv_wr + pctx->opts.max_send_wr, - conn, pconn->verbs_channel, 0); - if (pconn->cq==NULL) { - sprintf(ibw_lasterr, "ibv_create_cq failed\n"); - return -1; - } - - rc = ibv_req_notify_cq(pconn->cq, 0); - if (rc) { - sprintf(ibw_lasterr, "ibv_req_notify_cq failed with %d\n", rc); - return rc; - } - - /* init qp */ - memset(&init_attr, 0, sizeof(init_attr)); - init_attr.cap.max_send_wr = pctx->opts.max_send_wr; - init_attr.cap.max_recv_wr = pctx->opts.max_recv_wr; - 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 = pconn->cq; - init_attr.recv_cq = pconn->cq; - - rc = rdma_create_qp(pconn->cm_id, pconn->pd, &init_attr); - if (rc) { - sprintf(ibw_lasterr, "rdma_create_qp failed with %d\n", rc); - return rc; - } - /* elase result is in pconn->cm_id->qp */ - - rc = ibv_query_qp(pconn->cm_id->qp, &attr, IBV_QP_PATH_MTU, &init_attr); - if (rc) { - sprintf(ibw_lasterr, "ibv_query_qp failed with %d\n", rc); - return rc; - } - - return ibw_fill_cq(conn); -} - -static int ibw_refill_cq_recv(struct ibw_conn *conn) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - int rc; - struct ibv_sge list = { - .addr = (uintptr_t) NULL, /* filled below */ - .length = pctx->opts.recv_bufsize, - .lkey = pconn->mr_recv->lkey /* always the same */ - }; - struct ibv_recv_wr wr = { - .wr_id = 0, /* filled below */ - .sg_list = &list, - .num_sge = 1, - }; - struct ibv_recv_wr *bad_wr; - - DEBUG(10, ("ibw_refill_cq_recv(cmid: %p)\n", pconn->cm_id)); - - list.addr = (uintptr_t) pconn->buf_recv + pctx->opts.recv_bufsize * pconn->recv_index; - wr.wr_id = pconn->recv_index; - pconn->recv_index = (pconn->recv_index + 1) % pctx->opts.max_recv_wr; - - rc = ibv_post_recv(pconn->cm_id->qp, &wr, &bad_wr); - if (rc) { - sprintf(ibw_lasterr, "refill/ibv_post_recv failed with %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return -2; - } - - return 0; -} - -static int ibw_fill_cq(struct ibw_conn *conn) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - int i, rc; - struct ibv_sge list = { - .addr = (uintptr_t) NULL, /* filled below */ - .length = pctx->opts.recv_bufsize, - .lkey = pconn->mr_recv->lkey /* always the same */ - }; - struct ibv_recv_wr wr = { - .wr_id = 0, /* filled below */ - .sg_list = &list, - .num_sge = 1, - }; - struct ibv_recv_wr *bad_wr; - - DEBUG(10, ("ibw_fill_cq(cmid: %p)\n", pconn->cm_id)); - - for(i = pctx->opts.max_recv_wr; i!=0; i--) { - list.addr = (uintptr_t) pconn->buf_recv + pctx->opts.recv_bufsize * pconn->recv_index; - wr.wr_id = pconn->recv_index; - pconn->recv_index = (pconn->recv_index + 1) % pctx->opts.max_recv_wr; - - rc = ibv_post_recv(pconn->cm_id->qp, &wr, &bad_wr); - if (rc) { - sprintf(ibw_lasterr, "fill/ibv_post_recv failed with %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return -2; - } - } - - return 0; -} - -static int ibw_manage_connect(struct ibw_conn *conn) -{ - struct rdma_conn_param conn_param; - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - int rc; - - DEBUG(10, ("ibw_manage_connect(cmid: %p)\n", pconn->cm_id)); - - if (ibw_setup_cq_qp(conn)) - return -1; - - /* cm connect */ - memset(&conn_param, 0, sizeof conn_param); - conn_param.responder_resources = 1; - conn_param.initiator_depth = 1; - conn_param.retry_count = 10; - - rc = rdma_connect(pconn->cm_id, &conn_param); - if (rc) - sprintf(ibw_lasterr, "rdma_connect error %d\n", rc); - - return rc; -} - -static void ibw_event_handler_cm(struct event_context *ev, - struct fd_event *fde, uint16_t flags, void *private_data) -{ - int rc; - struct ibw_ctx *ctx = talloc_get_type(private_data, struct ibw_ctx); - struct ibw_ctx_priv *pctx = talloc_get_type(ctx->internal, struct ibw_ctx_priv); - struct ibw_conn *conn = NULL; - struct ibw_conn_priv *pconn = NULL; - struct rdma_cm_id *cma_id = NULL; - struct rdma_cm_event *event = NULL; - - assert(ctx!=NULL); - - rc = rdma_get_cm_event(pctx->cm_channel, &event); - if (rc) { - ctx->state = IBWS_ERROR; - event = NULL; - sprintf(ibw_lasterr, "rdma_get_cm_event error %d\n", rc); - goto error; - } - cma_id = event->id; - - DEBUG(10, ("cma_event type %d cma_id %p (%s)\n", event->event, cma_id, - (cma_id == pctx->cm_id) ? "parent" : "child")); - - switch (event->event) { - case RDMA_CM_EVENT_ADDR_RESOLVED: - DEBUG(11, ("RDMA_CM_EVENT_ADDR_RESOLVED\n")); - /* continuing from ibw_connect ... */ - rc = rdma_resolve_route(cma_id, 2000); - if (rc) { - sprintf(ibw_lasterr, "rdma_resolve_route error %d\n", rc); - goto error; - } - /* continued at RDMA_CM_EVENT_ROUTE_RESOLVED */ - break; - - case RDMA_CM_EVENT_ROUTE_RESOLVED: - DEBUG(11, ("RDMA_CM_EVENT_ROUTE_RESOLVED\n")); - /* after RDMA_CM_EVENT_ADDR_RESOLVED: */ - assert(cma_id->context!=NULL); - conn = talloc_get_type(cma_id->context, struct ibw_conn); - - rc = ibw_manage_connect(conn); - if (rc) - goto error; - - break; - - case RDMA_CM_EVENT_CONNECT_REQUEST: - DEBUG(11, ("RDMA_CM_EVENT_CONNECT_REQUEST\n")); - ctx->state = IBWS_CONNECT_REQUEST; - conn = ibw_conn_new(ctx, ctx); - pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - pconn->cm_id = cma_id; /* !!! event will be freed but id not */ - cma_id->context = (void *)conn; - DEBUG(10, ("pconn->cm_id %p\n", pconn->cm_id)); - - if (ibw_setup_cq_qp(conn)) - goto error; - - conn->state = IBWC_INIT; - pctx->connstate_func(ctx, conn); - - /* continued at ibw_accept when invoked by the func above */ - if (!pconn->is_accepted) { - rc = rdma_reject(cma_id, NULL, 0); - if (rc) - DEBUG(0, ("rdma_reject failed with rc=%d\n", rc)); - talloc_free(conn); - DEBUG(10, ("pconn->cm_id %p wasn't accepted\n", pconn->cm_id)); - } - - /* TODO: clarify whether if it's needed by upper layer: */ - ctx->state = IBWS_READY; - pctx->connstate_func(ctx, NULL); - - /* NOTE: more requests can arrive until RDMA_CM_EVENT_ESTABLISHED ! */ - break; - - case RDMA_CM_EVENT_ESTABLISHED: - /* expected after ibw_accept and ibw_connect[not directly] */ - DEBUG(1, ("ESTABLISHED (conn: %p)\n", cma_id->context)); - conn = talloc_get_type(cma_id->context, struct ibw_conn); - assert(conn!=NULL); /* important assumption */ - - DEBUG(10, ("ibw_setup_cq_qp succeeded (cmid=%p)\n", cma_id)); - - /* client conn is up */ - conn->state = IBWC_CONNECTED; - - /* both ctx and conn have changed */ - pctx->connstate_func(ctx, conn); - break; - - case RDMA_CM_EVENT_ADDR_ERROR: - sprintf(ibw_lasterr, "RDMA_CM_EVENT_ADDR_ERROR, error %d\n", event->status); - case RDMA_CM_EVENT_ROUTE_ERROR: - sprintf(ibw_lasterr, "RDMA_CM_EVENT_ROUTE_ERROR, error %d\n", event->status); - case RDMA_CM_EVENT_CONNECT_ERROR: - sprintf(ibw_lasterr, "RDMA_CM_EVENT_CONNECT_ERROR, error %d\n", event->status); - case RDMA_CM_EVENT_UNREACHABLE: - sprintf(ibw_lasterr, "RDMA_CM_EVENT_UNREACHABLE, error %d\n", event->status); - goto error; - case RDMA_CM_EVENT_REJECTED: - sprintf(ibw_lasterr, "RDMA_CM_EVENT_REJECTED, error %d\n", event->status); - DEBUG(1, ("cm event handler: %s", ibw_lasterr)); - conn = talloc_get_type(cma_id->context, struct ibw_conn); - if (conn) { - /* must be done BEFORE connstate */ - if ((rc=rdma_ack_cm_event(event))) - DEBUG(0, ("reject/rdma_ack_cm_event failed with %d\n", rc)); - event = NULL; /* not to touch cma_id or conn */ - conn->state = IBWC_ERROR; - /* it should free the conn */ - pctx->connstate_func(NULL, conn); - } - break; /* this is not strictly an error */ - - case RDMA_CM_EVENT_DISCONNECTED: - DEBUG(11, ("RDMA_CM_EVENT_DISCONNECTED\n")); - if ((rc=rdma_ack_cm_event(event))) - DEBUG(0, ("disc/rdma_ack_cm_event failed with %d\n", rc)); - event = NULL; /* don't ack more */ - - if (cma_id!=pctx->cm_id) { - DEBUG(0, ("client DISCONNECT event cm_id=%p\n", cma_id)); - conn = talloc_get_type(cma_id->context, struct ibw_conn); - conn->state = IBWC_DISCONNECTED; - pctx->connstate_func(NULL, conn); - } - break; - - case RDMA_CM_EVENT_DEVICE_REMOVAL: - sprintf(ibw_lasterr, "cma detected device removal!\n"); - goto error; - - default: - sprintf(ibw_lasterr, "unknown event %d\n", event->event); - goto error; - } - - if (event!=NULL && (rc=rdma_ack_cm_event(event))) { - sprintf(ibw_lasterr, "rdma_ack_cm_event failed with %d\n", rc); - goto error; - } - - return; -error: - DEBUG(0, ("cm event handler: %s", ibw_lasterr)); - - if (event!=NULL) { - if (cma_id!=NULL && cma_id!=pctx->cm_id) { - conn = talloc_get_type(cma_id->context, struct ibw_conn); - if (conn) { - conn->state = IBWC_ERROR; - pctx->connstate_func(NULL, conn); - } - } else { - ctx->state = IBWS_ERROR; - pctx->connstate_func(ctx, NULL); - } - - if ((rc=rdma_ack_cm_event(event))!=0) { - DEBUG(0, ("rdma_ack_cm_event failed with %d\n", rc)); - } - } - - return; -} - -static void ibw_event_handler_verbs(struct event_context *ev, - struct fd_event *fde, uint16_t flags, void *private_data) -{ - struct ibw_conn *conn = talloc_get_type(private_data, struct ibw_conn); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - - struct ibv_wc wc; - int rc; - struct ibv_cq *ev_cq; - void *ev_ctx; - - DEBUG(10, ("ibw_event_handler_verbs(%u)\n", (uint32_t)flags)); - - /* TODO: check whether if it's good to have more channels here... */ - rc = ibv_get_cq_event(pconn->verbs_channel, &ev_cq, &ev_ctx); - if (rc) { - sprintf(ibw_lasterr, "Failed to get cq_event with %d\n", rc); - goto error; - } - if (ev_cq != pconn->cq) { - sprintf(ibw_lasterr, "ev_cq(%p) != pconn->cq(%p)\n", ev_cq, pconn->cq); - goto error; - } - rc = ibv_req_notify_cq(pconn->cq, 0); - if (rc) { - sprintf(ibw_lasterr, "Couldn't request CQ notification (%d)\n", rc); - goto error; - } - - while((rc=ibv_poll_cq(pconn->cq, 1, &wc))==1) { - if (wc.status) { - sprintf(ibw_lasterr, "cq completion failed status=%d, opcode=%d, rc=%d\n", - wc.status, wc.opcode, rc); - goto error; - } - - switch(wc.opcode) { - case IBV_WC_SEND: - DEBUG(10, ("send completion\n")); - if (ibw_wc_send(conn, &wc)) - goto error; - break; - - case IBV_WC_RDMA_WRITE: - DEBUG(10, ("rdma write completion\n")); - break; - - case IBV_WC_RDMA_READ: - DEBUG(10, ("rdma read completion\n")); - break; - - case IBV_WC_RECV: - DEBUG(10, ("recv completion\n")); - if (ibw_wc_recv(conn, &wc)) - goto error; - break; - - default: - sprintf(ibw_lasterr, "unknown completion %d\n", wc.opcode); - goto error; - } - } - if (rc!=0) { - sprintf(ibw_lasterr, "ibv_poll_cq error %d\n", rc); - goto error; - } - - ibv_ack_cq_events(pconn->cq, 1); - - return; -error: - ibv_ack_cq_events(pconn->cq, 1); - - DEBUG(0, (ibw_lasterr)); - - if (conn->state!=IBWC_ERROR) { - conn->state = IBWC_ERROR; - pctx->connstate_func(NULL, conn); - } -} - -static int ibw_process_queue(struct ibw_conn *conn) -{ - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_ctx_priv *pctx; - struct ibw_wr *p; - int rc; - uint32_t msg_size; - - if (pconn->queue==NULL) - return 0; /* NOP */ - - p = pconn->queue; - - /* we must have at least 1 fragment to send */ - assert(p->queued_ref_cnt>0); - p->queued_ref_cnt--; - - pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - msg_size = (p->queued_ref_cnt) ? pctx->opts.recv_bufsize : p->queued_rlen; - - assert(p->queued_msg!=NULL); - assert(msg_size!=0); - - DEBUG(10, ("ibw_process_queue refcnt=%d msgsize=%u\n", - p->queued_ref_cnt, msg_size)); - - rc = ibw_send_packet(conn, p->queued_msg, p, msg_size); - - /* was this the last fragment? */ - if (p->queued_ref_cnt) { - p->queued_msg += pctx->opts.recv_bufsize; - } else { - DLIST_REMOVE2(pconn->queue, p, qprev, qnext); - p->queued_msg = NULL; - } - - return rc; -} - -static int ibw_wc_send(struct ibw_conn *conn, struct ibv_wc *wc) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_wr *p; - int send_index; - - DEBUG(10, ("ibw_wc_send(cmid: %p, wr_id: %u, bl: %u)\n", - pconn->cm_id, (uint32_t)wc->wr_id, (uint32_t)wc->byte_len)); - - assert(pconn->cm_id->qp->qp_num==wc->qp_num); - assert(wc->wr_id >= pctx->opts.max_recv_wr); - send_index = wc->wr_id - pctx->opts.max_recv_wr; - pconn->wr_sent--; - - if (send_index < pctx->opts.max_send_wr) { - DEBUG(10, ("ibw_wc_send#1 %u\n", (int)wc->wr_id)); - p = pconn->wr_index[send_index]; - if (p->buf_large!=NULL) { - if (p->ref_cnt) { - /* awaiting more of it... */ - p->ref_cnt--; - } else { - ibw_free_mr(&p->buf_large, &p->mr_large); - DLIST_REMOVE(pconn->wr_list_used, p); - DLIST_ADD(pconn->wr_list_avail, p); - } - } else { /* nasty - but necessary */ - DLIST_REMOVE(pconn->wr_list_used, p); - DLIST_ADD(pconn->wr_list_avail, p); - } - } else { /* "extra" request - not optimized */ - DEBUG(10, ("ibw_wc_send#2 %u\n", (int)wc->wr_id)); - for(p=pconn->extra_sent; p!=NULL; p=p->next) - if ((p->wr_id + pctx->opts.max_recv_wr)==(int)wc->wr_id) - break; - if (p==NULL) { - sprintf(ibw_lasterr, "failed to find wr_id %d\n", (int)wc->wr_id); - return -1; - } - if (p->ref_cnt) { - p->ref_cnt--; - } else { - ibw_free_mr(&p->buf_large, &p->mr_large); - DLIST_REMOVE(pconn->extra_sent, p); - DLIST_ADD(pconn->extra_avail, p); - } - } - - return ibw_process_queue(conn); -} - -static int ibw_append_to_part(struct ibw_conn_priv *pconn, - struct ibw_part *part, char **pp, uint32_t add_len, int info) -{ - DEBUG(10, ("ibw_append_to_part: cmid=%p, (bs=%u, len=%u, tr=%u), al=%u, i=%u\n", - pconn->cm_id, part->bufsize, part->len, part->to_read, add_len, info)); - - /* allocate more if necessary - it's an "evergrowing" buffer... */ - if (part->len + add_len > part->bufsize) { - if (part->buf==NULL) { - assert(part->len==0); - part->buf = talloc_size(pconn, add_len); - if (part->buf==NULL) { - sprintf(ibw_lasterr, "recv talloc_size error (%u) #%d\n", - add_len, info); - return -1; - } - part->bufsize = add_len; - } else { - part->buf = talloc_realloc_size(pconn, - part->buf, part->len + add_len); - if (part->buf==NULL) { - sprintf(ibw_lasterr, "recv realloc error (%u + %u) #%d\n", - part->len, add_len, info); - return -1; - } - } - part->bufsize = part->len + add_len; - } - - /* consume pp */ - memcpy(part->buf + part->len, *pp, add_len); - *pp += add_len; - part->len += add_len; - part->to_read -= add_len; - - return 0; -} - -static int ibw_wc_mem_threshold(struct ibw_conn_priv *pconn, - struct ibw_part *part, uint32_t threshold) -{ - DEBUG(10, ("ibw_wc_mem_threshold: cmid=%p, (bs=%u, len=%u, tr=%u), thr=%u\n", - pconn->cm_id, part->bufsize, part->len, part->to_read, threshold)); - - if (part->bufsize > threshold) { - DEBUG(3, ("ibw_wc_mem_threshold: cmid=%p, %u > %u\n", - pconn->cm_id, part->bufsize, threshold)); - talloc_free(part->buf); - part->buf = talloc_size(pconn, threshold); - if (part->buf==NULL) { - sprintf(ibw_lasterr, "talloc_size failed\n"); - return -1; - } - part->bufsize = threshold; - } - return 0; -} - -static int ibw_wc_recv(struct ibw_conn *conn, struct ibv_wc *wc) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_part *part = &pconn->part; - char *p; - uint32_t remain = wc->byte_len; - - DEBUG(10, ("ibw_wc_recv: cmid=%p, wr_id: %u, bl: %u\n", - pconn->cm_id, (uint32_t)wc->wr_id, remain)); - - assert(pconn->cm_id->qp->qp_num==wc->qp_num); - assert((int)wc->wr_id < pctx->opts.max_recv_wr); - assert(wc->byte_len <= pctx->opts.recv_bufsize); - - p = pconn->buf_recv + ((int)wc->wr_id * pctx->opts.recv_bufsize); - - while(remain) { - /* here always true: (part->len!=0 && part->to_read!=0) || - (part->len==0 && part->to_read==0) */ - if (part->len) { /* is there a partial msg to be continued? */ - int read_len = (part->to_read<=remain) ? part->to_read : remain; - if (ibw_append_to_part(pconn, part, &p, read_len, 421)) - goto error; - remain -= read_len; - - if (part->len<=sizeof(uint32_t) && part->to_read==0) { - assert(part->len==sizeof(uint32_t)); - /* set it again now... */ - part->to_read = *((uint32_t *)(part->buf)); /* TODO: ntohl */ - if (part->to_read<sizeof(uint32_t)) { - sprintf(ibw_lasterr, "got msglen=%u #2\n", part->to_read); - goto error; - } - part->to_read -= sizeof(uint32_t); /* it's already read */ - } - - if (part->to_read==0) { - pctx->receive_func(conn, part->buf, part->len); - part->len = 0; /* tells not having partial data (any more) */ - if (ibw_wc_mem_threshold(pconn, part, pctx->opts.recv_threshold)) - goto error; - } - } else { - if (remain>=sizeof(uint32_t)) { - uint32_t msglen = *(uint32_t *)p; /* TODO: ntohl */ - if (msglen<sizeof(uint32_t)) { - sprintf(ibw_lasterr, "got msglen=%u\n", msglen); - goto error; - } - - /* mostly awaited case: */ - if (msglen<=remain) { - pctx->receive_func(conn, p, msglen); - p += msglen; - remain -= msglen; - } else { - part->to_read = msglen; - /* part->len is already 0 */ - if (ibw_append_to_part(pconn, part, &p, remain, 422)) - goto error; - remain = 0; /* to be continued ... */ - /* part->to_read > 0 here */ - } - } else { /* edge case: */ - part->to_read = sizeof(uint32_t); - /* part->len is already 0 */ - if (ibw_append_to_part(pconn, part, &p, remain, 423)) - goto error; - remain = 0; - /* part->to_read > 0 here */ - } - } - } /* <remain> is always decreased at least by 1 */ - - if (ibw_refill_cq_recv(conn)) - goto error; - - return 0; - -error: - DEBUG(0, ("ibw_wc_recv error: %s", ibw_lasterr)); - return -1; -} - -static int ibw_process_init_attrs(struct ibw_initattr *attr, int nattr, struct ibw_opts *opts) -{ - int i; - const char *name, *value; - - DEBUG(10, ("ibw_process_init_attrs: nattr: %d\n", nattr)); - - opts->max_send_wr = IBW_MAX_SEND_WR; - opts->max_recv_wr = IBW_MAX_RECV_WR; - opts->recv_bufsize = IBW_RECV_BUFSIZE; - opts->recv_threshold = IBW_RECV_THRESHOLD; - - for(i=0; i<nattr; i++) { - name = attr[i].name; - value = attr[i].value; - - assert(name!=NULL && value!=NULL); - if (strcmp(name, "max_send_wr")==0) - opts->max_send_wr = atoi(value); - else if (strcmp(name, "max_recv_wr")==0) - opts->max_recv_wr = atoi(value); - else if (strcmp(name, "recv_bufsize")==0) - opts->recv_bufsize = atoi(value); - else if (strcmp(name, "recv_threshold")==0) - opts->recv_threshold = atoi(value); - else { - sprintf(ibw_lasterr, "ibw_init: unknown name %s\n", name); - return -1; - } - } - return 0; -} - -struct ibw_ctx *ibw_init(struct ibw_initattr *attr, int nattr, - void *ctx_userdata, - ibw_connstate_fn_t ibw_connstate, - ibw_receive_fn_t ibw_receive, - struct event_context *ectx) -{ - struct ibw_ctx *ctx = talloc_zero(NULL, struct ibw_ctx); - struct ibw_ctx_priv *pctx; - int rc; - - DEBUG(10, ("ibw_init(ctx_userdata: %p, ectx: %p)\n", ctx_userdata, ectx)); - - /* initialize basic data structures */ - memset(ibw_lasterr, 0, IBW_LASTERR_BUFSIZE); - - assert(ctx!=NULL); - ibw_lasterr[0] = '\0'; - talloc_set_destructor(ctx, ibw_ctx_destruct); - ctx->ctx_userdata = ctx_userdata; - - pctx = talloc_zero(ctx, struct ibw_ctx_priv); - talloc_set_destructor(pctx, ibw_ctx_priv_destruct); - ctx->internal = (void *)pctx; - assert(pctx!=NULL); - - pctx->connstate_func = ibw_connstate; - pctx->receive_func = ibw_receive; - - pctx->ectx = ectx; - - /* process attributes */ - if (ibw_process_init_attrs(attr, nattr, &pctx->opts)) - goto cleanup; - - /* init cm */ - pctx->cm_channel = rdma_create_event_channel(); - if (!pctx->cm_channel) { - sprintf(ibw_lasterr, "rdma_create_event_channel error %d\n", errno); - goto cleanup; - } - - pctx->cm_channel_event = event_add_fd(pctx->ectx, pctx, - pctx->cm_channel->fd, EVENT_FD_READ, ibw_event_handler_cm, ctx); - -#if RDMA_USER_CM_MAX_ABI_VERSION >= 2 - rc = rdma_create_id(pctx->cm_channel, &pctx->cm_id, ctx, RDMA_PS_TCP); -#else - rc = rdma_create_id(pctx->cm_channel, &pctx->cm_id, ctx); -#endif - if (rc) { - rc = errno; - sprintf(ibw_lasterr, "rdma_create_id error %d\n", rc); - goto cleanup; - } - DEBUG(10, ("created cm_id %p\n", pctx->cm_id)); - - pctx->pagesize = sysconf(_SC_PAGESIZE); - - return ctx; - /* don't put code here */ -cleanup: - DEBUG(0, (ibw_lasterr)); - - if (ctx) - talloc_free(ctx); - - return NULL; -} - -int ibw_stop(struct ibw_ctx *ctx) -{ - struct ibw_ctx_priv *pctx = (struct ibw_ctx_priv *)ctx->internal; - struct ibw_conn *p; - - DEBUG(10, ("ibw_stop\n")); - - for(p=ctx->conn_list; p!=NULL; p=p->next) { - if (ctx->state==IBWC_ERROR || ctx->state==IBWC_CONNECTED) { - if (ibw_disconnect(p)) - return -1; - } - } - - ctx->state = IBWS_STOPPED; - pctx->connstate_func(ctx, NULL); - - return 0; -} - -int ibw_bind(struct ibw_ctx *ctx, struct sockaddr_in *my_addr) -{ - struct ibw_ctx_priv *pctx = (struct ibw_ctx_priv *)ctx->internal; - int rc; - - DEBUG(10, ("ibw_bind: addr=%s, port=%u\n", - inet_ntoa(my_addr->sin_addr), ntohs(my_addr->sin_port))); - rc = rdma_bind_addr(pctx->cm_id, (struct sockaddr *) my_addr); - if (rc) { - sprintf(ibw_lasterr, "rdma_bind_addr error %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return rc; - } - DEBUG(10, ("rdma_bind_addr successful\n")); - - return 0; -} - -int ibw_listen(struct ibw_ctx *ctx, int backlog) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(ctx->internal, struct ibw_ctx_priv); - int rc; - - DEBUG(10, ("ibw_listen\n")); - rc = rdma_listen(pctx->cm_id, backlog); - if (rc) { - sprintf(ibw_lasterr, "rdma_listen failed: %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return rc; - } - - return 0; -} - -int ibw_accept(struct ibw_ctx *ctx, struct ibw_conn *conn, void *conn_userdata) -{ - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct rdma_conn_param conn_param; - int rc; - - DEBUG(10, ("ibw_accept: cmid=%p\n", pconn->cm_id)); - conn->conn_userdata = conn_userdata; - - memset(&conn_param, 0, sizeof(struct rdma_conn_param)); - conn_param.responder_resources = 1; - conn_param.initiator_depth = 1; - rc = rdma_accept(pconn->cm_id, &conn_param); - if (rc) { - sprintf(ibw_lasterr, "rdma_accept failed %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return -1;; - } - - pconn->is_accepted = 1; - - /* continued at RDMA_CM_EVENT_ESTABLISHED */ - - return 0; -} - -int ibw_connect(struct ibw_conn *conn, struct sockaddr_in *serv_addr, void *conn_userdata) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = NULL; - int rc; - - assert(conn!=NULL); - - conn->conn_userdata = conn_userdata; - pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - DEBUG(10, ("ibw_connect: addr=%s, port=%u\n", inet_ntoa(serv_addr->sin_addr), - ntohs(serv_addr->sin_port))); - - /* clean previous - probably half - initialization */ - if (ibw_conn_priv_destruct(pconn)) { - DEBUG(0, ("ibw_connect/ibw_pconn_destruct failed for cm_id=%p\n", pconn->cm_id)); - return -1; - } - - /* init cm */ -#if RDMA_USER_CM_MAX_ABI_VERSION >= 2 - rc = rdma_create_id(pctx->cm_channel, &pconn->cm_id, conn, RDMA_PS_TCP); -#else - rc = rdma_create_id(pctx->cm_channel, &pconn->cm_id, conn); -#endif - if (rc) { - rc = errno; - sprintf(ibw_lasterr, "ibw_connect/rdma_create_id error %d\n", rc); - talloc_free(conn); - return -1; - } - DEBUG(10, ("ibw_connect: rdma_create_id succeeded, cm_id=%p\n", pconn->cm_id)); - - rc = rdma_resolve_addr(pconn->cm_id, NULL, (struct sockaddr *) serv_addr, 2000); - if (rc) { - sprintf(ibw_lasterr, "rdma_resolve_addr error %d\n", rc); - DEBUG(0, (ibw_lasterr)); - talloc_free(conn); - return -1; - } - - /* continued at RDMA_CM_EVENT_ADDR_RESOLVED */ - - return 0; -} - -int ibw_disconnect(struct ibw_conn *conn) -{ - int rc; - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - - DEBUG(10, ("ibw_disconnect: cmid=%p\n", pconn->cm_id)); - - assert(pconn!=NULL); - - switch(conn->state) { - case IBWC_ERROR: - ibw_conn_priv_destruct(pconn); /* do this here right now */ - break; - case IBWC_CONNECTED: - rc = rdma_disconnect(pconn->cm_id); - if (rc) { - sprintf(ibw_lasterr, "ibw_disconnect failed with %d\n", rc); - DEBUG(0, (ibw_lasterr)); - return rc; - } - break; - default: - DEBUG(9, ("invalid state for disconnect: %d\n", conn->state)); - break; - } - - return 0; -} - -int ibw_alloc_send_buf(struct ibw_conn *conn, void **buf, void **key, uint32_t len) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_wr *p = pconn->wr_list_avail; - - if (p!=NULL) { - DEBUG(10, ("ibw_alloc_send_buf#1: cmid=%p, len=%d\n", pconn->cm_id, len)); - - DLIST_REMOVE(pconn->wr_list_avail, p); - DLIST_ADD(pconn->wr_list_used, p); - - if (len <= pctx->opts.recv_bufsize) { - *buf = (void *)p->buf; - } else { - p->buf_large = ibw_alloc_mr(pctx, pconn, len, &p->mr_large); - if (p->buf_large==NULL) { - sprintf(ibw_lasterr, "ibw_alloc_mr#1 failed\n"); - goto error; - } - *buf = (void *)p->buf_large; - } - /* p->wr_id is already filled in ibw_init_memory */ - } else { - DEBUG(10, ("ibw_alloc_send_buf#2: cmid=%p, len=%d\n", pconn->cm_id, len)); - /* not optimized */ - p = pconn->extra_avail; - if (!p) { - p = pconn->extra_avail = talloc_zero(pconn, struct ibw_wr); - talloc_set_destructor(p, ibw_wr_destruct); - if (p==NULL) { - sprintf(ibw_lasterr, "talloc_zero failed (emax: %u)\n", pconn->extra_max); - goto error; - } - p->wr_id = pctx->opts.max_send_wr + pconn->extra_max; - pconn->extra_max++; - switch(pconn->extra_max) { - case 1: DEBUG(2, ("warning: queue performed\n")); break; - case 10: DEBUG(0, ("warning: queue reached 10\n")); break; - case 100: DEBUG(0, ("warning: queue reached 100\n")); break; - case 1000: DEBUG(0, ("warning: queue reached 1000\n")); break; - default: break; - } - } - - p->buf_large = ibw_alloc_mr(pctx, pconn, len, &p->mr_large); - if (p->buf_large==NULL) { - sprintf(ibw_lasterr, "ibw_alloc_mr#2 failed\n"); - goto error; - } - *buf = (void *)p->buf_large; - - DLIST_REMOVE(pconn->extra_avail, p); - /* we don't have prepared index for this, so that - * we will have to find this by wr_id later on */ - DLIST_ADD(pconn->extra_sent, p); - } - - *key = (void *)p; - - return 0; -error: - DEBUG(0, ("ibw_alloc_send_buf error: %s", ibw_lasterr)); - return -1; -} - - -static int ibw_send_packet(struct ibw_conn *conn, void *buf, struct ibw_wr *p, uint32_t len) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - int rc; - - /* can we send it right now? */ - if (pconn->wr_sent<pctx->opts.max_send_wr) { - struct ibv_send_wr *bad_wr; - struct ibv_sge list = { - .addr = (uintptr_t)buf, - .length = len, - .lkey = pconn->mr_send->lkey - }; - struct ibv_send_wr wr = { - .wr_id = p->wr_id + pctx->opts.max_recv_wr, - .sg_list = &list, - .num_sge = 1, - .opcode = IBV_WR_SEND, - .send_flags = IBV_SEND_SIGNALED, - }; - - if (p->buf_large==NULL) { - DEBUG(10, ("ibw_send#normal(cmid: %p, wrid: %u, n: %d)\n", - pconn->cm_id, (uint32_t)wr.wr_id, len)); - } else { - DEBUG(10, ("ibw_send#large(cmid: %p, wrid: %u, n: %d)\n", - pconn->cm_id, (uint32_t)wr.wr_id, len)); - list.lkey = p->mr_large->lkey; - } - - rc = ibv_post_send(pconn->cm_id->qp, &wr, &bad_wr); - if (rc) { - sprintf(ibw_lasterr, "ibv_post_send error %d (%d)\n", - rc, pconn->wr_sent); - goto error; - } - - pconn->wr_sent++; - - return rc; - } /* else put the request into our own queue: */ - - DEBUG(10, ("ibw_send#queued(cmid: %p, len: %u)\n", pconn->cm_id, len)); - - /* TODO: clarify how to continue when state==IBWC_STOPPED */ - - /* to be sent by ibw_wc_send */ - /* regardless "normal" or [a part of] "large" packet */ - if (!p->queued_ref_cnt) { - DLIST_ADD_END2(pconn->queue, p, struct ibw_wr *, - qprev, qnext); /* TODO: optimize */ - p->queued_msg = buf; - } - p->queued_ref_cnt++; - p->queued_rlen = len; /* last wins; see ibw_wc_send */ - - return 0; -error: - DEBUG(0, (ibw_lasterr)); - return -1; -} - -int ibw_send(struct ibw_conn *conn, void *buf, void *key, uint32_t len) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_wr *p = talloc_get_type(key, struct ibw_wr); - int rc; - - assert(len>=sizeof(uint32_t)); - assert((*((uint32_t *)buf)==len)); /* TODO: htonl */ - - if (len > pctx->opts.recv_bufsize) { - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - int rlen = len; - char *packet = (char *)buf; - uint32_t recv_bufsize = pctx->opts.recv_bufsize; - - DEBUG(10, ("ibw_send#frag(cmid: %p, buf: %p, len: %u)\n", - pconn->cm_id, buf, len)); - - /* single threaded => no race here: */ - assert(p->ref_cnt==0); - while(rlen > recv_bufsize) { - rc = ibw_send_packet(conn, packet, p, recv_bufsize); - if (rc) - return rc; - packet += recv_bufsize; - rlen -= recv_bufsize; - p->ref_cnt++; /* not good to have it in ibw_send_packet */ - } - if (rlen) { - rc = ibw_send_packet(conn, packet, p, rlen); - p->ref_cnt++; /* not good to have it in ibw_send_packet */ - } - p->ref_cnt--; /* for the same handling */ - } else { - assert(p->ref_cnt==0); - assert(p->queued_ref_cnt==0); - - rc = ibw_send_packet(conn, buf, p, len); - } - return rc; -} - -int ibw_cancel_send_buf(struct ibw_conn *conn, void *buf, void *key) -{ - struct ibw_ctx_priv *pctx = talloc_get_type(conn->ctx->internal, struct ibw_ctx_priv); - struct ibw_conn_priv *pconn = talloc_get_type(conn->internal, struct ibw_conn_priv); - struct ibw_wr *p = talloc_get_type(key, struct ibw_wr); - - assert(p!=NULL); - assert(buf!=NULL); - assert(conn!=NULL); - - if (p->buf_large!=NULL) - ibw_free_mr(&p->buf_large, &p->mr_large); - - /* parallel case */ - if (p->wr_id < pctx->opts.max_send_wr) { - DEBUG(10, ("ibw_cancel_send_buf#1 %u", (int)p->wr_id)); - DLIST_REMOVE(pconn->wr_list_used, p); - DLIST_ADD(pconn->wr_list_avail, p); - } else { /* "extra" packet */ - DEBUG(10, ("ibw_cancel_send_buf#2 %u", (int)p->wr_id)); - DLIST_REMOVE(pconn->extra_sent, p); - DLIST_ADD(pconn->extra_avail, p); - } - - return 0; -} - -const char *ibw_getLastError(void) -{ - return ibw_lasterr; -} |