2 * Unix SMB/CIFS implementation.
3 * Join infiniband wrapper and ctdb.
5 * Copyright (C) Sven Oehme <oehmes@de.ibm.com> 2006
7 * Major code contributions by Peter Somogyi <psomogyi@gamax.hu>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include "lib/events/events.h"
26 #include <system/network.h>
28 #include "ctdb_private.h"
29 #include "ibwrapper.h"
32 int ctdb_ibw_get_address(struct ctdb_context *ctdb,
33 const char *address, struct in_addr *addr)
35 if (inet_pton(AF_INET, address, addr) <= 0) {
36 struct hostent *he = gethostbyname(address);
37 if (he == NULL || he->h_length > sizeof(*addr)) {
38 ctdb_set_error(ctdb, "invalid nework address '%s'\n",
42 memcpy(addr, he->h_addr, he->h_length);
47 int ctdb_ibw_node_connect(struct ctdb_node *node)
49 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
53 assert(cn->conn!=NULL);
54 struct sockaddr_in sock_out;
56 memset(&sock_out, 0, sizeof(struct sockaddr_in));
57 sock_out.sin_port = htons(node->address.port);
58 sock_out.sin_family = PF_INET;
59 if (ctdb_ibw_get_address(node->ctdb, node->address.address, &sock_out.sin_addr)) {
60 DEBUG(0, ("ctdb_ibw_node_connect failed\n"));
64 rc = ibw_connect(cn->conn, &sock_out, node);
66 DEBUG(0, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n"));
67 /* try again once a second */
68 event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
69 ctdb_ibw_node_connect_event, node);
72 /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */
76 void ctdb_ibw_node_connect_event(struct event_context *ev, struct timed_event *te,
77 struct timeval t, void *private_data)
79 struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node);
81 ctdb_ibw_node_connect(node);
84 int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
87 /* ctx->state changed */
89 case IBWS_INIT: /* ctx start - after ibw_init */
91 case IBWS_READY: /* after ibw_bind & ibw_listen */
93 case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */
94 /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
95 if (ibw_accept(ctx, conn, NULL)) {
96 DEBUG(0, ("connstate_handler/ibw_accept failed\n"));
98 } /* else continue in IBWC_CONNECTED */
100 case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
101 /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */
103 case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */
112 /* conn->state changed */
113 switch(conn->state) {
114 case IBWC_INIT: /* conn start - internal state */
116 case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */
117 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
118 if (node!=NULL) { /* after ibw_connect */
119 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
121 node->ctdb->upcalls->node_connected(node);
122 ctdb_flush_cn_queue(cn);
123 } else { /* after ibw_accept */
124 /* NOP in CTDB case */
127 case IBWC_DISCONNECTED: { /* after ibw_disconnect */
128 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
130 node->ctdb->upcalls->node_dead(node);
132 /* normal + intended disconnect => not reconnecting in this layer */
135 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
137 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
138 struct ibw_ctx *ictx = cn->conn->ctx;
140 DEBUG(10, ("IBWC_ERROR, reconnecting...\n"));
141 talloc_free(cn->conn); /* internal queue content is destroyed */
142 cn->conn = (void *)ibw_conn_new(ictx, node);
143 event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
144 ctdb_ibw_node_connect_event, node);
156 int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n)
158 struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context);
159 void *buf2; /* future TODO: a solution for removal of this */
164 assert(conn->state==IBWC_CONNECTED);
166 /* so far "buf" is an ib-registered memory area
167 * and being reused for next receive
168 * noticed that HL requires talloc-ed memory to be stolen */
169 buf2 = talloc_zero_size(conn, n);
170 memcpy(buf2, buf, n);
172 ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n);