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 "lib/events/events.h"
25 #include <system/network.h>
27 #include "ctdb_private.h"
28 #include "ibwrapper.h"
31 int ctdb_ibw_get_address(struct ctdb_context *ctdb,
32 const char *address, struct in_addr *addr)
34 if (inet_pton(AF_INET, address, addr) <= 0) {
35 struct hostent *he = gethostbyname(address);
36 if (he == NULL || he->h_length > sizeof(*addr)) {
37 ctdb_set_error(ctdb, "invalid nework address '%s'\n",
41 memcpy(addr, he->h_addr, he->h_length);
46 int ctdb_ibw_node_connect(struct ctdb_node *node)
48 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
52 assert(cn->conn!=NULL);
53 struct sockaddr_in sock_out;
55 memset(&sock_out, 0, sizeof(struct sockaddr_in));
56 sock_out.sin_port = htons(node->address.port);
57 sock_out.sin_family = PF_INET;
58 if (ctdb_ibw_get_address(node->ctdb, node->address.address, &sock_out.sin_addr)) {
59 DEBUG(0, ("ctdb_ibw_node_connect failed\n"));
63 rc = ibw_connect(cn->conn, &sock_out, node);
65 DEBUG(0, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n"));
66 /* try again once a second */
67 event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
68 ctdb_ibw_node_connect_event, node);
71 /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */
75 void ctdb_ibw_node_connect_event(struct event_context *ev, struct timed_event *te,
76 struct timeval t, void *private_data)
78 struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node);
80 ctdb_ibw_node_connect(node);
83 int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
86 /* ctx->state changed */
88 case IBWS_INIT: /* ctx start - after ibw_init */
90 case IBWS_READY: /* after ibw_bind & ibw_listen */
92 case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */
93 /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
94 if (ibw_accept(ctx, conn, NULL)) {
95 DEBUG(0, ("connstate_handler/ibw_accept failed\n"));
97 } /* else continue in IBWC_CONNECTED */
99 case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
100 /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */
102 case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */
111 /* conn->state changed */
112 switch(conn->state) {
113 case IBWC_INIT: /* conn start - internal state */
115 case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */
116 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
117 if (node!=NULL) { /* after ibw_connect */
118 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
120 node->ctdb->upcalls->node_connected(node);
121 ctdb_flush_cn_queue(cn);
122 } else { /* after ibw_accept */
123 /* NOP in CTDB case */
126 case IBWC_DISCONNECTED: { /* after ibw_disconnect */
127 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
129 node->ctdb->upcalls->node_dead(node);
131 /* normal + intended disconnect => not reconnecting in this layer */
134 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
136 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
137 struct ibw_ctx *ictx = cn->conn->ctx;
139 DEBUG(DEBUG_DEBUG, ("IBWC_ERROR, reconnecting...\n"));
140 talloc_free(cn->conn); /* internal queue content is destroyed */
141 cn->conn = (void *)ibw_conn_new(ictx, node);
142 event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0),
143 ctdb_ibw_node_connect_event, node);
155 int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n)
157 struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context);
158 void *buf2; /* future TODO: a solution for removal of this */
163 assert(conn->state==IBWC_CONNECTED);
165 /* so far "buf" is an ib-registered memory area
166 * and being reused for next receive
167 * noticed that HL requires talloc-ed memory to be stolen */
168 buf2 = talloc_zero_size(conn, n);
169 memcpy(buf2, buf, n);
171 ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n);