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-rw-r--r--source4/cluster/ctdb/ib/README.txt20
-rw-r--r--source4/cluster/ctdb/ib/config.m431
-rw-r--r--source4/cluster/ctdb/ib/ibw_ctdb.c157
-rw-r--r--source4/cluster/ctdb/ib/ibw_ctdb.h46
-rw-r--r--source4/cluster/ctdb/ib/ibw_ctdb_init.c214
-rw-r--r--source4/cluster/ctdb/ib/ibwrapper.c1344
-rw-r--r--source4/cluster/ctdb/ib/ibwrapper.h219
-rw-r--r--source4/cluster/ctdb/ib/ibwrapper_internal.h127
-rw-r--r--source4/cluster/ctdb/ib/ibwrapper_test.c641
9 files changed, 2799 insertions, 0 deletions
diff --git a/source4/cluster/ctdb/ib/README.txt b/source4/cluster/ctdb/ib/README.txt
new file mode 100644
index 0000000000..74fc129c35
--- /dev/null
+++ b/source4/cluster/ctdb/ib/README.txt
@@ -0,0 +1,20 @@
+Compilation
+===========
+
+For the configure script, please set the OFED include & library path by e.g.:
+
+export CFLAGS="-I/usr/local/ofed/include -L/usr/local/ofed/lib"
+
+After then:
+
+./configure --enable-infiniband
+
+Example for testing
+===================
+bin/ctdb_test --transport ib --nlist ../2nodes_rm.txt --listen 10.0.0.1:9001
+bin/ctdb_test --transport ib --nlist ../2nodes_rm.txt --listen 10.0.0.2:9001
+
+where 2nodes_rm.txt:
+10.0.0.1:9001
+10.0.0.2:9001
+
diff --git a/source4/cluster/ctdb/ib/config.m4 b/source4/cluster/ctdb/ib/config.m4
new file mode 100644
index 0000000000..9d95ea7a5a
--- /dev/null
+++ b/source4/cluster/ctdb/ib/config.m4
@@ -0,0 +1,31 @@
+AC_ARG_ENABLE(--enable-infiniband,
+[ --enable-infiniband Turn on infiniband support (default=no)])
+
+HAVE_INFINIBAND=no
+
+if eval "test x$enable_infiniband = xyes"; then
+ AC_DEFINE(USE_INFINIBAND,1,[Use infiniband])
+ HAVE_INFINIBAND=yes
+
+ INFINIBAND_WRAPPER_OBJ="ib/ibwrapper.o ib/ibw_ctdb.o ib/ibw_ctdb_init.o"
+ INFINIBAND_LIBS="-lrdmacm -libverbs"
+ INFINIBAND_BINS="bin/ibwrapper_test"
+
+ AC_CHECK_HEADERS(infiniband/verbs.h, [], [
+ echo "ERROR: you need infiniband/verbs.h when ib enabled!"
+ exit -1])
+ AC_CHECK_HEADERS(rdma/rdma_cma.h, [], [
+ echo "ERROR: you need rdma/rdma_cma.h when ib enabled!"
+ exit -1])
+ AC_CHECK_LIB(ibverbs, ibv_create_qp, [], [
+ echo "ERROR: you need libibverbs when ib enabled!"
+ exit -1])
+ AC_CHECK_LIB(rdmacm, rdma_connect, [], [
+ echo "ERROR: you need librdmacm when ib enabled!"
+ exit -1])
+fi
+
+AC_SUBST(HAVE_INFINIBAND)
+AC_SUBST(INFINIBAND_WRAPPER_OBJ)
+AC_SUBST(INFINIBAND_LIBS)
+AC_SUBST(INFINIBAND_BINS)
diff --git a/source4/cluster/ctdb/ib/ibw_ctdb.c b/source4/cluster/ctdb/ib/ibw_ctdb.c
new file mode 100644
index 0000000000..dfe4adc6d3
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibw_ctdb.c
@@ -0,0 +1,157 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Join infiniband wrapper and ctdb.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include <system/network.h>
+#include <assert.h>
+#include "ctdb_private.h"
+#include "ibwrapper.h"
+#include "ibw_ctdb.h"
+
+int ctdb_ibw_node_connect(struct ctdb_node *node)
+{
+ struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
+ int rc;
+
+ assert(cn!=NULL);
+ assert(cn->conn!=NULL);
+ struct sockaddr_in sock_out;
+
+ memset(&sock_out, 0, sizeof(struct sockaddr_in));
+ inet_pton(AF_INET, node->address.address, &sock_out.sin_addr);
+ sock_out.sin_port = htons(node->address.port);
+ sock_out.sin_family = PF_INET;
+
+ rc = ibw_connect(cn->conn, &sock_out, node);
+ if (rc) {
+ DEBUG(0, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n"));
+ /* try again once a second */
+ event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
+ ctdb_ibw_node_connect_event, node);
+ }
+
+ /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */
+ return 0;
+}
+
+void ctdb_ibw_node_connect_event(struct event_context *ev, struct timed_event *te,
+ struct timeval t, void *private_data)
+{
+ struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node);
+
+ ctdb_ibw_node_connect(node);
+}
+
+int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
+{
+ if (ctx!=NULL) {
+ /* ctx->state changed */
+ switch(ctx->state) {
+ case IBWS_INIT: /* ctx start - after ibw_init */
+ break;
+ case IBWS_READY: /* after ibw_bind & ibw_listen */
+ break;
+ case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */
+ /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
+ if (ibw_accept(ctx, conn, NULL)) {
+ DEBUG(0, ("connstate_handler/ibw_accept failed\n"));
+ return -1;
+ } /* else continue in IBWC_CONNECTED */
+ break;
+ case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
+ /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */
+ break;
+ case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+
+ if (conn!=NULL) {
+ /* conn->state changed */
+ switch(conn->state) {
+ case IBWC_INIT: /* conn start - internal state */
+ break;
+ case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */
+ struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
+ if (node!=NULL) { /* after ibw_connect */
+ struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
+
+ node->ctdb->upcalls->node_connected(node);
+ ctdb_flush_cn_queue(cn);
+ } else { /* after ibw_accept */
+ /* NOP in CTDB case */
+ }
+ } break;
+ case IBWC_DISCONNECTED: { /* after ibw_disconnect */
+ struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
+ if (node!=NULL)
+ node->ctdb->upcalls->node_dead(node);
+ talloc_free(conn);
+ /* normal + intended disconnect => not reconnecting in this layer */
+ } break;
+ case IBWC_ERROR: {
+ struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
+ if (node!=NULL) {
+ struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
+ struct ibw_ctx *ictx = cn->conn->ctx;
+
+ DEBUG(10, ("IBWC_ERROR, reconnecting...\n"));
+ talloc_free(cn->conn); /* internal queue content is destroyed */
+ cn->conn = (void *)ibw_conn_new(ictx, node);
+ event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
+ ctdb_ibw_node_connect_event, node);
+ }
+ } break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n)
+{
+ struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context);
+ void *buf2; /* future TODO: a solution for removal of this */
+
+ assert(ctdb!=NULL);
+ assert(buf!=NULL);
+ assert(conn!=NULL);
+ assert(conn->state==IBWC_CONNECTED);
+
+ /* so far "buf" is an ib-registered memory area
+ * and being reused for next receive
+ * noticed that HL requires talloc-ed memory to be stolen */
+ buf2 = talloc_zero_size(conn, n);
+ memcpy(buf2, buf, n);
+
+ ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n);
+
+ return 0;
+}
diff --git a/source4/cluster/ctdb/ib/ibw_ctdb.h b/source4/cluster/ctdb/ib/ibw_ctdb.h
new file mode 100644
index 0000000000..8286eef65a
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibw_ctdb.h
@@ -0,0 +1,46 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Join infiniband wrapper and ctdb.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+struct ctdb_ibw_msg {
+ uint8_t *data;
+ uint32_t length;
+ struct ctdb_ibw_msg *prev;
+ struct ctdb_ibw_msg *next;
+};
+
+struct ctdb_ibw_node {
+ struct ibw_conn *conn;
+
+ struct ctdb_ibw_msg *queue;
+ struct ctdb_ibw_msg *queue_last;
+ int qcnt;
+};
+
+int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn);
+int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n);
+
+int ctdb_ibw_node_connect(struct ctdb_node *node);
+void ctdb_ibw_node_connect_event(struct event_context *ev, struct timed_event *te,
+ struct timeval t, void *private_data);
+
+int ctdb_flush_cn_queue(struct ctdb_ibw_node *cn);
diff --git a/source4/cluster/ctdb/ib/ibw_ctdb_init.c b/source4/cluster/ctdb/ib/ibw_ctdb_init.c
new file mode 100644
index 0000000000..3b0c6ad28f
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibw_ctdb_init.c
@@ -0,0 +1,214 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Join infiniband wrapper and ctdb.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include <system/network.h>
+#include <assert.h>
+#include "ctdb_private.h"
+#include "ibwrapper.h"
+#include "ibw_ctdb.h"
+
+static int ctdb_ibw_listen(struct ctdb_context *ctdb, int backlog)
+{
+ struct ibw_ctx *ictx = talloc_get_type(ctdb->private_data, struct ibw_ctx);
+ struct sockaddr_in my_addr;
+
+ assert(ictx!=NULL);
+ memset(&my_addr, 0, sizeof(struct sockaddr_in));
+ my_addr.sin_port = htons(ctdb->address.port);
+ my_addr.sin_family = PF_INET;
+ inet_pton(AF_INET, ctdb->address.address, &my_addr.sin_addr);
+
+ if (ibw_bind(ictx, &my_addr)) {
+ DEBUG(0, ("ctdb_ibw_listen: ibw_bind failed\n"));
+ return -1;
+ }
+
+ if (ibw_listen(ictx, backlog)) {
+ DEBUG(0, ("ctdb_ibw_listen: ibw_listen failed\n"));
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Start infiniband
+ */
+static int ctdb_ibw_start(struct ctdb_context *ctdb)
+{
+ int i;
+
+ /* listen on our own address */
+ if (ctdb_ibw_listen(ctdb, 10)) /* TODO: backlog as param */
+ return -1;
+
+ /* everything async here */
+ for (i=0;i<ctdb->num_nodes;i++) {
+ struct ctdb_node *node = ctdb->nodes[i];
+ if (!(ctdb->flags & CTDB_FLAG_SELF_CONNECT) &&
+ ctdb_same_address(&ctdb->address, &node->address))
+ continue;
+ ctdb_ibw_node_connect(node);
+ }
+
+ return 0;
+}
+
+/*
+ * initialise ibw portion of a ctdb node
+ */
+static int ctdb_ibw_add_node(struct ctdb_node *node)
+{
+ struct ibw_ctx *ictx = talloc_get_type(node->ctdb->private_data, struct ibw_ctx);
+ struct ctdb_ibw_node *cn = talloc_zero(node, struct ctdb_ibw_node);
+
+ assert(cn!=NULL);
+ cn->conn = ibw_conn_new(ictx, node);
+ node->private_data = (void *)cn;
+
+ return (cn->conn!=NULL ? 0 : -1);
+}
+
+static int ctdb_ibw_send_pkt(struct ibw_conn *conn, uint8_t *data, uint32_t length)
+{
+ void *buf, *key;
+
+ if (ibw_alloc_send_buf(conn, &buf, &key, length)) {
+ DEBUG(0, ("queue_pkt/ibw_alloc_send_buf failed\n"));
+ return -1;
+ }
+
+ memcpy(buf, data, length);
+ return ibw_send(conn, buf, key, length);
+}
+
+int ctdb_flush_cn_queue(struct ctdb_ibw_node *cn)
+{
+ struct ctdb_ibw_msg *p;
+ int rc = 0;
+
+ while(cn->queue) {
+ p = cn->queue;
+ rc = ctdb_ibw_send_pkt(cn->conn, p->data, p->length);
+ if (rc)
+ return -1; /* will be retried later when conn is up */
+
+ DLIST_REMOVE(cn->queue, p);
+ cn->qcnt--;
+ talloc_free(p); /* it will talloc_free p->data as well */
+ }
+ assert(cn->qcnt==0);
+ /* cn->queue_last = NULL is not needed - see DLIST_ADD_AFTER */
+
+ return rc;
+}
+
+static int ctdb_ibw_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length)
+{
+ struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
+ int rc;
+
+ assert(length>=sizeof(uint32_t));
+ assert(cn!=NULL);
+
+ if (cn->conn==NULL) {
+ DEBUG(0, ("ctdb_ibw_queue_pkt: conn is NULL\n"));
+ return -1;
+ }
+
+ if (cn->conn->state==IBWC_CONNECTED) {
+ rc = ctdb_ibw_send_pkt(cn->conn, data, length);
+ } else {
+ struct ctdb_ibw_msg *p = talloc_zero(cn, struct ctdb_ibw_msg);
+ p->data = talloc_memdup(p, data, length);
+ p->length = length;
+
+ DLIST_ADD_AFTER(cn->queue, p, cn->queue_last);
+ cn->queue_last = p;
+ cn->qcnt++;
+
+ rc = 0;
+ }
+
+ return rc;
+}
+
+/*
+ * transport packet allocator - allows transport to control memory for packets
+ */
+static void *ctdb_ibw_allocate_pkt(struct ctdb_context *ctdb, size_t size)
+{
+ /* TODO: use ibw_alloc_send_buf instead... */
+ return talloc_size(ctdb, size);
+}
+
+#ifdef __NOTDEF__
+
+static int ctdb_ibw_stop(struct ctdb_context *cctx)
+{
+ struct ibw_ctx *ictx = talloc_get_type(cctx->private_data, struct ibw_ctx);
+
+ assert(ictx!=NULL);
+ return ibw_stop(ictx);
+}
+
+#endif /* __NOTDEF__ */
+
+static const struct ctdb_methods ctdb_ibw_methods = {
+ .start = ctdb_ibw_start,
+ .add_node = ctdb_ibw_add_node,
+ .queue_pkt = ctdb_ibw_queue_pkt,
+ .allocate_pkt = ctdb_ibw_allocate_pkt,
+
+// .stop = ctdb_ibw_stop
+};
+
+/*
+ * initialise ibw portion of ctdb
+ */
+int ctdb_ibw_init(struct ctdb_context *ctdb)
+{
+ struct ibw_ctx *ictx;
+
+ DEBUG(10, ("ctdb_ibw_init invoked...\n"));
+ ictx = ibw_init(
+ NULL, //struct ibw_initattr *attr, /* TODO */
+ 0, //int nattr, /* TODO */
+ ctdb,
+ ctdb_ibw_connstate_handler,
+ ctdb_ibw_receive_handler,
+ ctdb->ev);
+
+ if (ictx==NULL) {
+ DEBUG(0, ("ctdb_ibw_init: ibw_init failed\n"));
+ return -1;
+ }
+
+ ctdb->methods = &ctdb_ibw_methods;
+ ctdb->private_data = ictx;
+
+ DEBUG(10, ("ctdb_ibw_init succeeded.\n"));
+ return 0;
+}
diff --git a/source4/cluster/ctdb/ib/ibwrapper.c b/source4/cluster/ctdb/ib/ibwrapper.c
new file mode 100644
index 0000000000..f7b233954d
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibwrapper.c
@@ -0,0 +1,1344 @@
+/*
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#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 <rdma/rdma_cma.h>
+#include "infiniband/sa-kern-abi.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(%u %u)\n", (uint32_t)*ppbuf, (uint32_t)*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(%u)\n", (uint32_t)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(%u)\n", (uint32_t)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(%u)\n", (uint32_t)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;
+ 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(0, ("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);
+ case RDMA_CM_EVENT_REJECTED:
+ sprintf(ibw_lasterr, "RDMA_CM_EVENT_REJECTED, error %d\n", event->status);
+ conn = talloc_get_type(cma_id->context, struct ibw_conn);
+ if (conn) {
+ if ((rc=rdma_ack_cm_event(event)))
+ DEBUG(0, ("reject/rdma_ack_cm_event failed with %d\n", rc));
+ event = NULL;
+ pconn = talloc_get_type(conn->internal, struct ibw_conn_priv);
+ ibw_conn_priv_destruct(pconn);
+ }
+ goto 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:
+ if (event!=NULL && (rc=rdma_ack_cm_event(event))) {
+ sprintf(ibw_lasterr, "rdma_ack_cm_event failed with %d\n", rc);
+ goto error;
+ }
+
+ DEBUG(0, ("cm event handler: %s", ibw_lasterr));
+
+ if (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);
+ }
+}
+
+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);
+
+ rc = rdma_create_id(pctx->cm_channel, &pctx->cm_id, ctx, RDMA_PS_TCP);
+ 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 */
+ rc = rdma_create_id(pctx->cm_channel, &pconn->cm_id, conn, RDMA_PS_TCP);
+ 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;
+}
diff --git a/source4/cluster/ctdb/ib/ibwrapper.h b/source4/cluster/ctdb/ib/ibwrapper.h
new file mode 100644
index 0000000000..36385d6f46
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibwrapper.h
@@ -0,0 +1,219 @@
+/*
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Server communication state */
+enum ibw_state_ctx {
+ IBWS_INIT = 0, /* ctx start - after ibw_init */
+ IBWS_READY, /* after ibw_bind & ibw_listen */
+ IBWS_CONNECT_REQUEST, /* after [IBWS_READY + incoming request] */
+ /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
+ IBWS_STOPPED, /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
+ IBWS_ERROR /* abnormal state; ibw_stop must be called after this */
+};
+
+/* Connection state */
+struct ibw_ctx {
+ void *ctx_userdata; /* see ibw_init */
+
+ enum ibw_state_ctx state;
+ void *internal;
+
+ struct ibw_conn *conn_list; /* 1st elem of double linked list */
+};
+
+enum ibw_state_conn {
+ IBWC_INIT = 0, /* conn start - internal state */
+ IBWC_CONNECTED, /* after ibw_accept or ibw_connect */
+ IBWC_DISCONNECTED, /* after ibw_disconnect */
+ IBWC_ERROR
+};
+
+struct ibw_conn {
+ struct ibw_ctx *ctx;
+ enum ibw_state_conn state;
+
+ void *conn_userdata; /* see ibw_connect and ibw_accept */
+ void *internal;
+
+ struct ibw_conn *prev, *next;
+};
+
+/*
+ * (name, value) pair for array param of ibw_init
+ */
+struct ibw_initattr {
+ const char *name;
+ const char *value;
+};
+
+/*
+ * Callback function definition which should inform you about
+ * connection state change
+ * This callback is invoked whenever server or client connection changes.
+ * Both <conn> and <ctx> can be NULL if their state didn't change.
+ * Return nonzero on error.
+ */
+typedef int (*ibw_connstate_fn_t)(struct ibw_ctx *ctx, struct ibw_conn *conn);
+
+/*
+ * Callback function definition which should process incoming packets
+ * This callback is invoked whenever any message arrives.
+ * Return nonzero on error.
+ *
+ * Important: you mustn't store buf pointer for later use.
+ * Process its contents before returning.
+ */
+typedef int (*ibw_receive_fn_t)(struct ibw_conn *conn, void *buf, int n);
+
+/*
+ * settings: array of (name, value) pairs
+ * where name is one of:
+ * max_send_wr [default is 256]
+ * max_recv_wr [default is 1024]
+ * <...>
+ *
+ * Must be called _ONCE_ for each node.
+ *
+ * max_msg_size is the maximum size of a message
+ * (max_send_wr + max_recv_wr) * max_msg_size bytes allocated per connection
+ *
+ * returns non-NULL on success
+ *
+ * talloc_free must be called for the result in IBWS_STOPPED;
+ * it will close resources by destructor
+ * connections(ibw_conn *) must have been closed prior talloc_free
+ */
+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);
+
+/*
+ * Must be called in states of (IBWS_ERROR, IBWS_READY, IBWS_CONNECT_REQUEST)
+ *
+ * It will send out disconnect requests and free up ibw_conn structures.
+ * The ctx->state will transit to IBWS_STOPPED after every conn are disconnected.
+ * During that time, you mustn't send/recv/disconnect any more.
+ * Only after ctx->state=IBWS_STOPPED you can talloc_free the ctx.
+ */
+int ibw_stop(struct ibw_ctx *ctx);
+
+/*************** connection initiation - like stream sockets *****/
+
+/*
+ * works like socket bind
+ * needs a normal internet address here
+ *
+ * return 0 on success
+ */
+int ibw_bind(struct ibw_ctx *ctx, struct sockaddr_in *my_addr);
+
+/*
+ * works like socket listen
+ * non-blocking
+ * enables accepting incoming connections (after IBWS_READY)
+ * (it doesn't touch ctx->state by itself)
+ *
+ * returns 0 on success
+ */
+int ibw_listen(struct ibw_ctx *ctx, int backlog);
+
+/*
+ * works like socket accept
+ * initializes a connection to a client
+ * must be called when state=IBWS_CONNECT_REQUEST
+ *
+ * returns 0 on success
+ *
+ * You have +1 waiting here: you will get ibw_conn (having the
+ * same <conn_userdata> member) structure in ibw_connstate_fn_t.
+ *
+ * Important: you won't get remote IP address (only internal conn info)
+ */
+int ibw_accept(struct ibw_ctx *ctx, struct ibw_conn *conn, void *conn_userdata);
+
+/*
+ * Create a new connection structure
+ * available for queueing ibw_send
+ *
+ * <parent> is needed to be notified by talloc destruct action.
+ */
+struct ibw_conn *ibw_conn_new(struct ibw_ctx *ctx, TALLOC_CTX *mem_ctx);
+
+/*
+ * Needs a normal internet address here
+ * can be called within IBWS_READY|IBWS_CONNECT_REQUEST
+ *
+ * returns non-NULL on success
+ *
+ * You have +1 waiting here: you will get ibw_conn (having the
+ * same <conn_userdata> member) structure in ibw_connstate_fn_t.
+ */
+int ibw_connect(struct ibw_conn *conn, struct sockaddr_in *serv_addr, void *conn_userdata);
+
+/*
+ * Sends out a disconnect request.
+ * You should process fds after calling this function
+ * and then process it with ibw_process_event normally
+ * until you get conn->state = IBWC_DISCONNECTED
+ *
+ * You mustn't talloc_free <conn> yet right after this,
+ * first wait for IBWC_DISCONNECTED.
+ */
+int ibw_disconnect(struct ibw_conn *conn);
+
+/************ Infiniband specific event loop wrapping ******************/
+
+/*
+ * You have to use this buf to fill in before send.
+ * It's just to avoid memcpy.in ibw_send.
+ * Use the same (buf, key) pair with ibw_send.
+ * Don't use more space than maxsize (see ibw_init).
+ *
+ * Returns 0 on success.
+ */
+int ibw_alloc_send_buf(struct ibw_conn *conn, void **buf, void **key, uint32_t len);
+
+/*
+ * Send the message in one
+ * Can be invoked any times (should fit into buffers) and at any time
+ * (in conn->state=IBWC_CONNECTED)
+ * n must be less or equal than max_msg_size (see ibw_init)
+ *
+ * You mustn't use (buf, key) any more for sending.
+ */
+int ibw_send(struct ibw_conn *conn, void *buf, void *key, uint32_t len);
+
+/*
+ * Call this after ibw_alloc_send_buf
+ * when you won't call ibw_send for (buf, key)
+ * You mustn't use (buf, key) any more.
+ */
+int ibw_cancel_send_buf(struct ibw_conn *conn, void *buf, void *key);
+
+/*
+ * Retrieves the last error
+ * result: always non-zero, mustn't be freed (static)
+ */
+const char *ibw_getLastError(void);
diff --git a/source4/cluster/ctdb/ib/ibwrapper_internal.h b/source4/cluster/ctdb/ib/ibwrapper_internal.h
new file mode 100644
index 0000000000..9c6bfab519
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibwrapper_internal.h
@@ -0,0 +1,127 @@
+/*
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+struct ibw_opts {
+ uint32_t max_send_wr;
+ uint32_t max_recv_wr;
+ uint32_t recv_bufsize;
+ uint32_t recv_threshold;
+};
+
+struct ibw_wr {
+ char *buf; /* initialized in ibw_init_memory once per connection */
+ int wr_id; /* position in wr_index list; also used as wr id */
+
+ char *buf_large; /* allocated specially for "large" message */
+ struct ibv_mr *mr_large;
+ int ref_cnt; /* reference count for ibw_wc_send to know when to release */
+
+ char *queued_msg; /* set at ibw_send - can be different than above */
+ int queued_ref_cnt; /* instead of adding the same to the queue again */
+ uint32_t queued_rlen; /* last wins when queued_ref_cnt>0; or simple msg size */
+
+ struct ibw_wr *next, *prev; /* in wr_list_avail or wr_list_used */
+ /* or extra_sent or extra_avail */
+ struct ibw_wr *qnext, *qprev; /* in queue */
+};
+
+struct ibw_ctx_priv {
+ struct event_context *ectx;
+
+ struct ibw_opts opts;
+
+ struct rdma_cm_id *cm_id; /* server cm id */
+
+ struct rdma_event_channel *cm_channel;
+ struct fd_event *cm_channel_event;
+
+ ibw_connstate_fn_t connstate_func; /* see ibw_init */
+ ibw_receive_fn_t receive_func; /* see ibw_init */
+
+ long pagesize; /* sysconf result for memalign */
+};
+
+struct ibw_part {
+ char *buf; /* talloced memory buffer */
+ uint32_t bufsize; /* allocated size of buf - always grows */
+ uint32_t len; /* message part length */
+ uint32_t to_read; /* 4 or *((uint32_t)buf) if len>=sizeof(uint32_t) */
+};
+
+struct ibw_conn_priv {
+ struct ibv_comp_channel *verbs_channel;
+ struct fd_event *verbs_channel_event;
+
+ struct rdma_cm_id *cm_id; /* client's cm id */
+ struct ibv_pd *pd;
+ int is_accepted;
+
+ struct ibv_cq *cq; /* qp is in cm_id */
+
+ char *buf_send; /* max_send_wr * avg_send_size */
+ struct ibv_mr *mr_send;
+ struct ibw_wr *wr_list_avail;
+ struct ibw_wr *wr_list_used;
+ struct ibw_wr **wr_index; /* array[0..(qsize-1)] of (ibw_wr *) */
+ int wr_sent; /* # of send wrs in the CQ */
+
+ struct ibw_wr *extra_sent;
+ struct ibw_wr *extra_avail;
+ int extra_max; /* max wr_id in the queue */
+
+ struct ibw_wr *queue;
+
+ /* buf_recv is a ring buffer */
+ char *buf_recv; /* max_recv_wr * avg_recv_size */
+ struct ibv_mr *mr_recv;
+ int recv_index; /* index of the next recv buffer when refilling */
+ struct ibw_part part;
+};
+
+/* remove an element from a list - element doesn't have to be in list. */
+#define DLIST_REMOVE2(list, p, prev, next) \
+do { \
+ if ((p) == (list)) { \
+ (list) = (p)->next; \
+ if (list) (list)->prev = NULL; \
+ } else { \
+ if ((p)->prev) (p)->prev->next = (p)->next; \
+ if ((p)->next) (p)->next->prev = (p)->prev; \
+ } \
+ if ((p) != (list)) (p)->next = (p)->prev = NULL; \
+} while (0)
+
+/* hook into the end of the list - needs a tmp pointer */
+#define DLIST_ADD_END2(list, p, type, prev, next) \
+do { \
+ if (!(list)) { \
+ (list) = (p); \
+ (p)->next = (p)->prev = NULL; \
+ } else { \
+ type tmp; \
+ for (tmp = (list); tmp->next; tmp = tmp->next) ; \
+ tmp->next = (p); \
+ (p)->next = NULL; \
+ (p)->prev = tmp; \
+ } \
+} while (0)
diff --git a/source4/cluster/ctdb/ib/ibwrapper_test.c b/source4/cluster/ctdb/ib/ibwrapper_test.c
new file mode 100644
index 0000000000..fa506500e4
--- /dev/null
+++ b/source4/cluster/ctdb/ib/ibwrapper_test.c
@@ -0,0 +1,641 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Test the infiniband wrapper.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#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 <signal.h>
+#include <sys/time.h>
+#include <time.h>
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "ib/ibwrapper.h"
+
+struct ibwtest_ctx {
+ int is_server;
+ char *id; /* my id */
+
+ struct ibw_initattr *attrs;
+ int nattrs;
+ char *opts; /* option string */
+
+ struct sockaddr_in *addrs; /* dynamic array of dest addrs */
+ int naddrs;
+
+ unsigned int nsec; /* delta times between messages in nanosec */
+ unsigned int sleep_usec; /* microsecs to sleep in the main loop to emulate overloading */
+ uint32_t maxsize; /* maximum variable message size */
+
+ int cnt;
+ int nsent;
+
+ int nmsg; /* number of messages to send (client) */
+
+ int kill_me;
+ int stopping;
+ int error;
+ struct ibw_ctx *ibwctx;
+
+ struct timeval start_time, end_time;
+};
+
+struct ibwtest_conn {
+ char *id;
+};
+
+enum testopcode {
+ TESTOP_SEND_ID = 1,
+ TESTOP_SEND_TEXT = 2,
+ TESTOP_SEND_RND = 3
+};
+
+int ibwtest_connect_everybody(struct ibwtest_ctx *tcx)
+{
+ struct ibw_conn *conn;
+ struct ibwtest_conn *tconn = talloc_zero(tcx, struct ibwtest_conn);
+ int i;
+
+ for(i=0; i<tcx->naddrs; i++) {
+ conn = ibw_conn_new(tcx->ibwctx, tconn);
+ if (ibw_connect(conn, &tcx->addrs[i], tconn)) {
+ fprintf(stderr, "ibw_connect error at %d\n", i);
+ return -1;
+ }
+ }
+ DEBUG(10, ("sent %d connect request...\n", tcx->naddrs));
+
+ return 0;
+}
+
+int ibwtest_send_id(struct ibw_conn *conn)
+{
+ struct ibwtest_ctx *tcx = talloc_get_type(conn->ctx->ctx_userdata, struct ibwtest_ctx);
+ char *buf;
+ void *key;
+ uint32_t len;
+
+ DEBUG(10, ("ibwtest_send_id\n"));
+ len = sizeof(uint32_t)+strlen(tcx->id)+2;
+ if (ibw_alloc_send_buf(conn, (void **)&buf, &key, len)) {
+ DEBUG(0, ("send_id: ibw_alloc_send_buf failed\n"));
+ return -1;
+ }
+
+ /* first sizeof(uint32_t) size bytes are for length */
+ *((uint32_t *)buf) = len;
+ buf[sizeof(uint32_t)] = (char)TESTOP_SEND_ID;
+ strcpy(buf+sizeof(uint32_t)+1, tcx->id);
+
+ if (ibw_send(conn, buf, key, len)) {
+ DEBUG(0, ("send_id: ibw_send error\n"));
+ return -1;
+ }
+ tcx->nsent++;
+
+ return 0;
+}
+
+int ibwtest_send_test_msg(struct ibwtest_ctx *tcx, struct ibw_conn *conn, const char *msg)
+{
+ char *buf, *p;
+ void *key;
+ uint32_t len;
+
+ if (conn->state!=IBWC_CONNECTED)
+ return 0; /* not yet up */
+
+ len = strlen(msg) + 2 + sizeof(uint32_t);
+ if (ibw_alloc_send_buf(conn, (void **)&buf, &key, len)) {
+ fprintf(stderr, "send_test_msg: ibw_alloc_send_buf failed\n");
+ return -1;
+ }
+
+ *((uint32_t *)buf) = len;
+ p = buf;
+ p += sizeof(uint32_t);
+ p[0] = (char)TESTOP_SEND_TEXT;
+ p++;
+ strcpy(p, msg);
+
+ if (ibw_send(conn, buf, key, len)) {
+ DEBUG(0, ("send_test_msg: ibw_send error\n"));
+ return -1;
+ }
+ tcx->nsent++;
+
+ return 0;
+}
+
+unsigned char ibwtest_fill_random(unsigned char *buf, uint32_t size)
+{
+ uint32_t i = size;
+ unsigned char sum = 0;
+ unsigned char value;
+ while(i) {
+ i--;
+ value = (unsigned char)(256.0 * (rand() / (RAND_MAX + 1.0)));
+ buf[i] = value;
+ sum += value;
+ }
+ return sum;
+}
+
+unsigned char ibwtest_get_sum(unsigned char *buf, uint32_t size)
+{
+ uint32_t i = size;
+ unsigned char sum = 0;
+
+ while(i) {
+ i--;
+ sum += buf[i];
+ }
+ return sum;
+}
+
+int ibwtest_do_varsize_scenario_conn_size(struct ibwtest_ctx *tcx, struct ibw_conn *conn, uint32_t size)
+{
+ unsigned char *buf;
+ void *key;
+ uint32_t len;
+ unsigned char sum;
+
+ len = sizeof(uint32_t) + 1 + size + 1;
+ if (ibw_alloc_send_buf(conn, (void **)&buf, &key, len)) {
+ DEBUG(0, ("varsize/ibw_alloc_send_buf failed\n"));
+ return -1;
+ }
+ *((uint32_t *)buf) = len;
+ buf[sizeof(uint32_t)] = TESTOP_SEND_RND;
+ sum = ibwtest_fill_random(buf + sizeof(uint32_t) + 1, size);
+ buf[sizeof(uint32_t) + 1 + size] = sum;
+ if (ibw_send(conn, buf, key, len)) {
+ DEBUG(0, ("varsize/ibw_send failed\n"));
+ return -1;
+ }
+ tcx->nsent++;
+
+ return 0;
+}
+
+int ibwtest_do_varsize_scenario_conn(struct ibwtest_ctx *tcx, struct ibw_conn *conn)
+{
+ uint32_t size;
+ int i;
+
+ for(i=0; i<tcx->nmsg; i++)
+ {
+ //size = (uint32_t)((float)(tcx->maxsize) * (rand() / (RAND_MAX + 1.0)));
+ size = (uint32_t)((float)(tcx->maxsize) * ((float)(i+1)/(float)tcx->nmsg));
+ if (ibwtest_do_varsize_scenario_conn_size(tcx, conn, size))
+ return -1;
+ }
+ return 0;
+}
+
+/*int ibwtest_do_varsize_scenario(ibwtest_ctx *tcx)
+{
+ int rc;
+ struct ibw_conn *conn;
+
+ for(conn=tcx->ibwctx->conn_list; conn!=NULL; conn=conn->next) {
+ if (conn->state==IBWC_CONNECTED) {
+ rc = ibwtest_do_varsize_scenario_conn(tcx, conn);
+ if (rc)
+ tcx->error = rc;
+ }
+ }
+}*/
+
+int ibwtest_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
+{
+ struct ibwtest_ctx *tcx = NULL; /* userdata */
+ struct ibwtest_conn *tconn = NULL; /* userdata */
+
+ if (ctx) {
+ tcx = talloc_get_type(ctx->ctx_userdata, struct ibwtest_ctx);
+
+ switch(ctx->state) {
+ case IBWS_INIT:
+ DEBUG(10, ("test IBWS_INIT\n"));
+ break;
+ case IBWS_READY:
+ DEBUG(10, ("test IBWS_READY\n"));
+ break;
+ case IBWS_CONNECT_REQUEST:
+ DEBUG(10, ("test IBWS_CONNECT_REQUEST\n"));
+ tconn = talloc_zero(conn, struct ibwtest_conn);
+ if (ibw_accept(ctx, conn, tconn)) {
+ DEBUG(0, ("error accepting the connect request\n"));
+ }
+ break;
+ case IBWS_STOPPED:
+ DEBUG(10, ("test IBWS_STOPPED\n"));
+ tcx->kill_me = 1; /* main loop can exit */
+ break;
+ case IBWS_ERROR:
+ DEBUG(10, ("test IBWS_ERROR\n"));
+ ibw_stop(tcx->ibwctx);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+
+ if (conn) {
+ tconn = talloc_get_type(conn->conn_userdata, struct ibwtest_conn);
+ switch(conn->state) {
+ case IBWC_INIT:
+ DEBUG(10, ("test IBWC_INIT\n"));
+ break;
+ case IBWC_CONNECTED:
+ if (gettimeofday(&tcx->start_time, NULL)) {
+ DEBUG(0, ("gettimeofday error %d", errno));
+ return -1;
+ }
+ ibwtest_send_id(conn);
+ break;
+ case IBWC_DISCONNECTED:
+ DEBUG(10, ("test IBWC_DISCONNECTED\n"));
+ talloc_free(conn);
+ break;
+ case IBWC_ERROR:
+ DEBUG(10, ("test IBWC_ERROR\n"));
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ return 0;
+}
+
+int ibwtest_receive_handler(struct ibw_conn *conn, void *buf, int n)
+{
+ struct ibwtest_conn *tconn;
+ enum testopcode op;
+ struct ibwtest_ctx *tcx = talloc_get_type(conn->ctx->ctx_userdata, struct ibwtest_ctx);
+ int rc = 0;
+
+ assert(conn!=NULL);
+ assert(n>=sizeof(uint32_t)+1);
+ tconn = talloc_get_type(conn->conn_userdata, struct ibwtest_conn);
+
+ op = (enum testopcode)((char *)buf)[sizeof(uint32_t)];
+ if (op==TESTOP_SEND_ID) {
+ tconn->id = talloc_strdup(tconn, ((char *)buf)+sizeof(uint32_t)+1);
+ }
+ if (op==TESTOP_SEND_ID || op==TESTOP_SEND_TEXT) {
+ DEBUG(11, ("[%d]msg from %s: \"%s\"(%d)\n", op,
+ tconn->id ? tconn->id : "NULL", ((char *)buf)+sizeof(uint32_t)+1, n));
+ }
+
+ if (tcx->is_server) {
+ if (op==TESTOP_SEND_RND) {
+ unsigned char sum;
+ sum = ibwtest_get_sum((unsigned char *)buf + sizeof(uint32_t) + 1,
+ n - sizeof(uint32_t) - 2);
+ DEBUG(11, ("[%d]msg varsize %u/sum %u from %s\n",
+ op,
+ n - sizeof(uint32_t) - 2,
+ (uint32_t)sum,
+ tconn->id ? tconn->id : "NULL"));
+ if (sum!=((unsigned char *)buf)[n-1]) {
+ DEBUG(0, ("ERROR: checksum mismatch %u!=%u\n",
+ (uint32_t)sum, (uint32_t)((unsigned char *)buf)[n-1]));
+ ibw_stop(tcx->ibwctx);
+ goto error;
+ }
+ } else {
+ char *buf2;
+ void *key2;
+
+ /* bounce message regardless what it is */
+ if (ibw_alloc_send_buf(conn, (void **)&buf2, &key2, n)) {
+ fprintf(stderr, "ibw_alloc_send_buf error #2\n");
+ goto error;
+ }
+ memcpy(buf2, buf, n);
+ if (ibw_send(conn, buf2, key2, n)) {
+ fprintf(stderr, "ibw_send error #2\n");
+ goto error;
+ }
+ tcx->nsent++;
+ }
+ } else { /* client: */
+ if (op==TESTOP_SEND_ID && tcx->maxsize) {
+ /* send them in one blow */
+ rc = ibwtest_do_varsize_scenario_conn(tcx, conn);
+ }
+
+ if (tcx->nmsg) {
+ char msg[26];
+ sprintf(msg, "hello world %d", tcx->nmsg--);
+ rc = ibwtest_send_test_msg(tcx, conn, msg);
+ if (tcx->nmsg==0) {
+ ibw_stop(tcx->ibwctx);
+ tcx->stopping = 1;
+ }
+ }
+ }
+
+ if (rc)
+ tcx->error = rc;
+
+ return rc;
+error:
+ return -1;
+}
+
+void ibwtest_timeout_handler(struct event_context *ev, struct timed_event *te,
+ struct timeval t, void *private_data)
+{
+ struct ibwtest_ctx *tcx = talloc_get_type(private_data, struct ibwtest_ctx);
+ int rc;
+
+ if (!tcx->is_server) {
+ struct ibw_conn *conn;
+ char msg[50];
+
+ /* fill it with something variable... */
+ sprintf(msg, "hello world %d", tcx->cnt++);
+
+ /* send something to everybody... */
+ for(conn=tcx->ibwctx->conn_list; conn!=NULL; conn=conn->next) {
+ if (conn->state==IBWC_CONNECTED) {
+ rc = ibwtest_send_test_msg(tcx, conn, msg);
+ if (rc)
+ tcx->error = rc;
+ }
+ }
+ } /* else allow main loop run */
+}
+
+static struct ibwtest_ctx *testctx = NULL;
+
+void ibwtest_sigint_handler(int sig)
+{
+ DEBUG(0, ("got SIGINT\n"));
+ if (testctx) {
+ if (testctx->ibwctx->state==IBWS_READY ||
+ testctx->ibwctx->state==IBWS_CONNECT_REQUEST ||
+ testctx->ibwctx->state==IBWS_ERROR)
+ {
+ if (testctx->stopping) {
+ DEBUG(10, ("forcing exit...\n"));
+ testctx->kill_me = 1;
+ } else {
+ /* mostly expected case */
+ ibw_stop(testctx->ibwctx);
+ testctx->stopping = 1;
+ }
+ } else
+ testctx->kill_me = 1;
+ }
+}
+
+int ibwtest_parse_attrs(struct ibwtest_ctx *tcx, char *optext,
+ struct ibw_initattr **pattrs, int *nattrs, char op)
+{
+ int i = 0, n = 1;
+ int porcess_next = 1;
+ char *p, *q;
+ struct ibw_initattr *attrs = NULL;
+
+ *pattrs = NULL;
+ for(p = optext; *p!='\0'; p++) {
+ if (*p==',')
+ n++;
+ }
+
+ attrs = (struct ibw_initattr *)talloc_size(tcx,
+ n * sizeof(struct ibw_initattr));
+ for(p = optext; *p!='\0'; p++) {
+ if (porcess_next) {
+ attrs[i].name = p;
+ q = strchr(p, ':');
+ if (q==NULL) {
+ fprintf(stderr, "-%c format error\n", op);
+ return -1;
+ }
+ *q = '\0';
+ attrs[i].value = q + 1;
+
+ porcess_next = 0;
+ i++;
+ p = q; /* ++ at end */
+ }
+ if (*p==',') {
+ *p = '\0'; /* ++ at end */
+ porcess_next = 1;
+ }
+ }
+ *pattrs = attrs;
+ *nattrs = n;
+
+ return 0;
+}
+
+int ibwtest_getdests(struct ibwtest_ctx *tcx, char op)
+{
+ int i;
+ struct ibw_initattr *attrs = NULL;
+ struct sockaddr_in *p;
+ char *tmp;
+
+ tmp = talloc_strdup(tcx, optarg);
+ /* hack to reuse the above ibw_initattr parser */
+ if (ibwtest_parse_attrs(tcx, tmp, &attrs, &tcx->naddrs, op))
+ return -1;
+
+ tcx->addrs = talloc_size(tcx,
+ tcx->naddrs * sizeof(struct sockaddr_in));
+ for(i=0; i<tcx->naddrs; i++) {
+ p = tcx->addrs + i;
+ p->sin_family = AF_INET;
+ p->sin_addr.s_addr = inet_addr(attrs[i].name);
+ p->sin_port = htons(atoi(attrs[i].value));
+ }
+
+ return 0;
+}
+
+int ibwtest_init_server(struct ibwtest_ctx *tcx)
+{
+ if (tcx->naddrs!=1) {
+ fprintf(stderr, "incorrect number of addrs(%d!=1)\n", tcx->naddrs);
+ return -1;
+ }
+
+ if (ibw_bind(tcx->ibwctx, &tcx->addrs[0])) {
+ DEBUG(0, ("ERROR: ibw_bind failed\n"));
+ return -1;
+ }
+
+ if (ibw_listen(tcx->ibwctx, 1)) {
+ DEBUG(0, ("ERROR: ibw_listen failed\n"));
+ return -1;
+ }
+
+ /* continued at IBWS_READY */
+ return 0;
+}
+
+void ibwtest_usage(struct ibwtest_ctx *tcx, char *name)
+{
+ printf("Usage:\n");
+ printf("\t%s -i <id> -o {name:value} -d {addr:port} -t nsec -s\n", name);
+ printf("\t-i <id> is a free text, acting as a server id, max 23 chars [mandatory]\n");
+ printf("\t-o name1:value1,name2:value2,... is a list of (name, value) pairs\n");
+ printf("\t-d addr1:port1,addr2:port2,... is a list of destination ip addresses\n");
+ printf("\t-t nsec delta time between sends in nanosec [default %d]\n", tcx->nsec);
+ printf("\t\t send message periodically and endless when nsec is non-zero\n");
+ printf("\t-s server mode (you have to give exactly one -d address:port in this case)\n");
+ printf("\t-n number of messages to send [default %d]\n", tcx->nmsg);
+ printf("\t-l usec time to sleep in the main loop [default %d]\n", tcx->sleep_usec);
+ printf("\t-v max variable msg size in bytes [default %d], 0=don't send var. size\n", tcx->maxsize);
+ printf("Press ctrl+C to stop the program.\n");
+}
+
+int main(int argc, char *argv[])
+{
+ int rc, op;
+ int result = 1;
+ struct event_context *ev = NULL;
+ struct ibwtest_ctx *tcx = NULL;
+ float usec;
+
+ tcx = talloc_zero(NULL, struct ibwtest_ctx);
+ memset(tcx, 0, sizeof(struct ibwtest_ctx));
+ tcx->nsec = 0;
+ tcx->nmsg = 1000;
+
+ /* here is the only case we can't avoid using global... */
+ testctx = tcx;
+ signal(SIGINT, ibwtest_sigint_handler);
+ srand((unsigned)time(NULL));
+
+ while ((op=getopt(argc, argv, "i:o:d:m:st:n:l:v:")) != -1) {
+ switch (op) {
+ case 'i':
+ tcx->id = talloc_strdup(tcx, optarg);
+ break;
+ case 'o':
+ tcx->opts = talloc_strdup(tcx, optarg);
+ if (ibwtest_parse_attrs(tcx, tcx->opts, &tcx->attrs,
+ &tcx->nattrs, op))
+ goto cleanup;
+ break;
+ case 'd':
+ if (ibwtest_getdests(tcx, op))
+ goto cleanup;
+ break;
+ case 's':
+ tcx->is_server = 1;
+ break;
+ case 't':
+ tcx->nsec = (unsigned int)atoi(optarg);
+ break;
+ case 'n':
+ tcx->nmsg = atoi(optarg);
+ break;
+ case 'l':
+ tcx->sleep_usec = (unsigned int)atoi(optarg);
+ break;
+ case 'v':
+ tcx->maxsize = (unsigned int)atoi(optarg);
+ break;
+ default:
+ fprintf(stderr, "ERROR: unknown option -%c\n", (char)op);
+ ibwtest_usage(tcx, argv[0]);
+ goto cleanup;
+ }
+ }
+ if (tcx->id==NULL) {
+ ibwtest_usage(tcx, argv[0]);
+ goto cleanup;
+ }
+
+ ev = event_context_init(NULL);
+ assert(ev);
+
+ tcx->ibwctx = ibw_init(tcx->attrs, tcx->nattrs,
+ tcx,
+ ibwtest_connstate_handler,
+ ibwtest_receive_handler,
+ ev
+ );
+ if (!tcx->ibwctx)
+ goto cleanup;
+
+ if (tcx->is_server)
+ rc = ibwtest_init_server(tcx);
+ else
+ rc = ibwtest_connect_everybody(tcx);
+ if (rc)
+ goto cleanup;
+
+ while(!tcx->kill_me && !tcx->error) {
+ if (tcx->nsec) {
+ event_add_timed(ev, tcx, timeval_current_ofs(0, tcx->nsec),
+ ibwtest_timeout_handler, tcx);
+ }
+
+ event_loop_once(ev);
+
+ if (tcx->sleep_usec)
+ usleep(tcx->sleep_usec);
+ }
+
+ if (!tcx->is_server && tcx->nsent!=0 && !tcx->error) {
+ if (gettimeofday(&tcx->end_time, NULL)) {
+ DEBUG(0, ("gettimeofday error %d\n", errno));
+ goto cleanup;
+ }
+ usec = (tcx->end_time.tv_sec - tcx->start_time.tv_sec) * 1000000 +
+ (tcx->end_time.tv_usec - tcx->start_time.tv_usec);
+ printf("usec: %f, nmsg: %d, usec/nmsg: %f\n",
+ usec, tcx->nsent, usec/(float)tcx->nsent);
+ }
+
+ if (!tcx->error)
+ result = 0; /* everything OK */
+
+cleanup:
+ if (tcx)
+ talloc_free(tcx);
+ if (ev)
+ talloc_free(ev);
+ DEBUG(0, ("exited with code %d\n", result));
+ return result;
+}