source: vendor/current/ctdb/ib/ibw_ctdb.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 5.3 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * Join infiniband wrapper and ctdb.
4 *
5 * Copyright (C) Sven Oehme <oehmes@de.ibm.com> 2006
6 *
7 * Major code contributions by Peter Somogyi <psomogyi@gamax.hu>
8 *
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.
13 *
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.
18 *
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/>.
21 */
22
23#include "replace.h"
24#include "system/network.h"
25
26#include <assert.h>
27#include <talloc.h>
28#include <tevent.h>
29
30#include "lib/util/time.h"
31#include "lib/util/debug.h"
32
33#include "ctdb_private.h"
34
35#include "common/common.h"
36#include "common/logging.h"
37
38#include "ibwrapper.h"
39#include "ibw_ctdb.h"
40
41int ctdb_ibw_get_address(struct ctdb_context *ctdb,
42 const char *address, struct in_addr *addr)
43{
44 if (inet_pton(AF_INET, address, addr) <= 0) {
45 struct hostent *he = gethostbyname(address);
46 if (he == NULL || he->h_length > sizeof(*addr)) {
47 ctdb_set_error(ctdb, "invalid nework address '%s'\n",
48 address);
49 return -1;
50 }
51 memcpy(addr, he->h_addr, he->h_length);
52 }
53 return 0;
54}
55
56int ctdb_ibw_node_connect(struct ctdb_node *node)
57{
58 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
59 int rc;
60
61 assert(cn!=NULL);
62 assert(cn->conn!=NULL);
63
64 rc = ibw_connect(cn->conn, &node->address.ip, node);
65 if (rc) {
66 DEBUG(DEBUG_ERR, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n"));
67 /* try again once a second */
68 tevent_add_timer(node->ctdb->ev, node,
69 timeval_current_ofs(1, 0),
70 ctdb_ibw_node_connect_event, node);
71 }
72
73 /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */
74 return 0;
75}
76
77void ctdb_ibw_node_connect_event(struct tevent_context *ev,
78 struct tevent_timer *te,
79 struct timeval t, void *private_data)
80{
81 struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node);
82
83 ctdb_ibw_node_connect(node);
84}
85
86int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn)
87{
88 if (ctx!=NULL) {
89 /* ctx->state changed */
90 switch(ctx->state) {
91 case IBWS_INIT: /* ctx start - after ibw_init */
92 break;
93 case IBWS_READY: /* after ibw_bind & ibw_listen */
94 break;
95 case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */
96 /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */
97 if (ibw_accept(ctx, conn, NULL)) {
98 DEBUG(DEBUG_ERR, ("connstate_handler/ibw_accept failed\n"));
99 return -1;
100 } /* else continue in IBWC_CONNECTED */
101 break;
102 case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */
103 /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */
104 break;
105 case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */
106 break;
107 default:
108 assert(0);
109 break;
110 }
111 }
112
113 if (conn!=NULL) {
114 /* conn->state changed */
115 switch(conn->state) {
116 case IBWC_INIT: /* conn start - internal state */
117 break;
118 case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */
119 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
120 if (node!=NULL) { /* after ibw_connect */
121 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
122
123 node->ctdb->upcalls->node_connected(node);
124 ctdb_flush_cn_queue(cn);
125 } else { /* after ibw_accept */
126 /* NOP in CTDB case */
127 }
128 } break;
129 case IBWC_DISCONNECTED: { /* after ibw_disconnect */
130 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
131 if (node!=NULL)
132 node->ctdb->upcalls->node_dead(node);
133 talloc_free(conn);
134 /* normal + intended disconnect => not reconnecting in this layer */
135 } break;
136 case IBWC_ERROR: {
137 struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node);
138 if (node!=NULL) {
139 struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
140 struct ibw_ctx *ictx = cn->conn->ctx;
141
142 DEBUG(DEBUG_DEBUG, ("IBWC_ERROR, reconnecting...\n"));
143 talloc_free(cn->conn); /* internal queue content is destroyed */
144 cn->conn = (void *)ibw_conn_new(ictx, node);
145 tevent_add_timer(node->ctdb->ev, node,
146 timeval_current_ofs(1, 0),
147 ctdb_ibw_node_connect_event, node);
148 }
149 } break;
150 default:
151 assert(0);
152 break;
153 }
154 }
155
156 return 0;
157}
158
159int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n)
160{
161 struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context);
162 void *buf2; /* future TODO: a solution for removal of this */
163
164 assert(ctdb!=NULL);
165 assert(buf!=NULL);
166 assert(conn!=NULL);
167 assert(conn->state==IBWC_CONNECTED);
168
169 /* so far "buf" is an ib-registered memory area
170 * and being reused for next receive
171 * noticed that HL requires talloc-ed memory to be stolen */
172 buf2 = talloc_zero_size(conn, n);
173 CTDB_NO_MEMORY(ctdb, buf2);
174
175 memcpy(buf2, buf, n);
176
177 ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n);
178
179 return 0;
180}
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