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, see <http://www.gnu.org/licenses/>.
24 #include "system/network.h"
30 #include "lib/util/time.h"
31 #include "lib/util/debug.h"
33 #include "ctdb_private.h"
35 #include "common/common.h"
36 #include "common/logging.h"
38 #include "ibwrapper.h"
40 #include "lib/util/dlinklist.h"
42 int ctdb_ibw_get_address(struct ctdb_context *ctdb,
43 const char *address, struct in_addr *addr)
45 if (inet_pton(AF_INET, address, addr) <= 0) {
46 struct hostent *he = gethostbyname(address);
47 if (he == NULL || he->h_length > sizeof(*addr)) {
48 ctdb_set_error(ctdb, "invalid nework address '%s'\n",
52 memcpy(addr, he->h_addr, he->h_length);
57 int ctdb_ibw_node_connect(struct ctdb_node *node)
59 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
63 assert(cn->conn!=NULL);
65 rc = ibw_connect(cn->conn, &node->address.ip, node);
67 DEBUG(DEBUG_ERR, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n"));
68 /* try again once a second */
69 tevent_add_timer(node->ctdb->ev, node,
70 timeval_current_ofs(1, 0),
71 ctdb_ibw_node_connect_event, node);
74 /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */
78 void ctdb_ibw_node_connect_event(struct tevent_context *ev,
79 struct tevent_timer *te,
80 struct timeval t, void *private_data)
82 struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node);
84 ctdb_ibw_node_connect(node);
87 int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
90 /* ctx->state changed */
92 case IBWS_INIT: /* ctx start - after ibw_init */
94 case IBWS_READY: /* after ibw_bind & ibw_listen */
96 case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */
97 /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
98 if (ibw_accept(ctx, conn, NULL)) {
99 DEBUG(DEBUG_ERR, ("connstate_handler/ibw_accept failed\n"));
101 } /* else continue in IBWC_CONNECTED */
103 case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
104 /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */
106 case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */
115 /* conn->state changed */
116 switch(conn->state) {
117 case IBWC_INIT: /* conn start - internal state */
119 case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */
120 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
121 if (node!=NULL) { /* after ibw_connect */
122 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
124 node->ctdb->upcalls->node_connected(node);
125 ctdb_flush_cn_queue(cn);
126 } else { /* after ibw_accept */
127 /* NOP in CTDB case */
130 case IBWC_DISCONNECTED: { /* after ibw_disconnect */
131 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
133 node->ctdb->upcalls->node_dead(node);
135 /* normal + intended disconnect => not reconnecting in this layer */
138 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
140 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
141 struct ibw_ctx *ictx = cn->conn->ctx;
143 DEBUG(DEBUG_DEBUG, ("IBWC_ERROR, reconnecting...\n"));
144 talloc_free(cn->conn); /* internal queue content is destroyed */
145 cn->conn = (void *)ibw_conn_new(ictx, node);
146 tevent_add_timer(node->ctdb->ev, node,
147 timeval_current_ofs(1, 0),
148 ctdb_ibw_node_connect_event, node);
160 int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n)
162 struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context);
163 void *buf2; /* future TODO: a solution for removal of this */
168 assert(conn->state==IBWC_CONNECTED);
170 /* so far "buf" is an ib-registered memory area
171 * and being reused for next receive
172 * noticed that HL requires talloc-ed memory to be stolen */
173 buf2 = talloc_zero_size(conn, n);
174 CTDB_NO_MEMORY(ctdb, buf2);
176 memcpy(buf2, buf, n);
178 ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n);