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/*
* 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(TALLOC_CTX *mem_ctx, size_t size)
{
/* TODO: use ibw_alloc_send_buf instead... */
return talloc_size(mem_ctx, 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;
}
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