ctdb/ib/ibw_ctdb_init.c

   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/dlinklist.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
  41 static int ctdb_ibw_listen(struct ctdb_context *ctdb, int backlog)
  42 {
  43         struct ibw_ctx *ictx = talloc_get_type(ctdb->private_data, struct ibw_ctx);
  44
  45         assert(ictx!=NULL);
  46
  47         if (ibw_bind(ictx, &ctdb->address->ip)) {
  48                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_listen: ibw_bind failed\n"));
  49                 return -1;
  50         }
  51
  52         if (ibw_listen(ictx, backlog)) {
  53                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_listen: ibw_listen failed\n"));
  54                 return -1;
  55         }
  56
  57         return 0;
  58 }
  59
  60 /*
  61  * initialise ibw portion of a ctdb node
  62  */
  63 static int ctdb_ibw_add_node(struct ctdb_node *node)
  64 {
  65         struct ibw_ctx *ictx = talloc_get_type(node->ctdb->private_data, struct ibw_ctx);
  66         struct ctdb_ibw_node *cn = talloc_zero(node, struct ctdb_ibw_node);
  67
  68         assert(cn!=NULL);
  69         cn->conn = ibw_conn_new(ictx, node);
  70         node->private_data = (void *)cn;
  71
  72         return (cn->conn!=NULL ? 0 : -1);
  73 }
  74
  75 /*
  76  * initialise infiniband
  77  */
  78 static int ctdb_ibw_initialise(struct ctdb_context *ctdb)
  79 {
  80         int i, ret;
  81
  82         ret = ctdb_ibw_init(ctdb);
  83         if (ret != 0) {
  84                 return ret;
  85         }
  86
  87         for (i=0; i<ctdb->num_nodes; i++) {
  88                 if (ctdb_ibw_add_node(ctdb->nodes[i]) != 0) {
  89                         DEBUG(DEBUG_CRIT, ("methods->add_node failed at %d\n", i));
  90                         return -1;
  91                 }
  92         }
  93
  94         /* listen on our own address */
  95         if (ctdb_ibw_listen(ctdb, 10)) /* TODO: backlog as param */
  96                 return -1;
  97
  98         return 0;
  99 }
 100
 101
 102 /*
 103  * Start infiniband
 104  */
 105 static int ctdb_ibw_start(struct ctdb_context *ctdb)
 106 {
 107         int i;
 108
 109         /* everything async here */
 110         for (i=0;i<ctdb->num_nodes;i++) {
 111                 struct ctdb_node *node = ctdb->nodes[i];
 112                 if (!ctdb_same_address(ctdb->address, &node->address)) {
 113                         ctdb_ibw_node_connect(node);
 114                 }
 115         }
 116
 117         return 0;
 118 }
 119
 120 static int ctdb_ibw_send_pkt(struct ibw_conn *conn, uint8_t *data, uint32_t length)
 121 {
 122         void    *buf, *key;
 123
 124         if (ibw_alloc_send_buf(conn, &buf, &key, length)) {
 125                 DEBUG(DEBUG_ERR, ("queue_pkt/ibw_alloc_send_buf failed\n"));
 126                 return -1;
 127         }
 128
 129         memcpy(buf, data, length);
 130         return ibw_send(conn, buf, key, length);
 131 }
 132
 133 int ctdb_flush_cn_queue(struct ctdb_ibw_node *cn)
 134 {
 135         struct ctdb_ibw_msg *p;
 136         int     rc = 0;
 137
 138         while(cn->queue) {
 139                 p = cn->queue;
 140                 rc = ctdb_ibw_send_pkt(cn->conn, p->data, p->length);
 141                 if (rc)
 142                         return -1; /* will be retried later when conn is up */
 143
 144                 DLIST_REMOVE(cn->queue, p);
 145                 cn->qcnt--;
 146                 talloc_free(p); /* it will talloc_free p->data as well */
 147         }
 148         assert(cn->qcnt==0);
 149         /* cn->queue_last = NULL is not needed - see DLIST_ADD_AFTER */
 150
 151         return rc;
 152 }
 153
 154 static int ctdb_ibw_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length)
 155 {
 156         struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
 157         int     rc;
 158
 159         assert(length>=sizeof(uint32_t));
 160         assert(cn!=NULL);
 161
 162         if (cn->conn==NULL) {
 163                 DEBUG(DEBUG_ERR, ("ctdb_ibw_queue_pkt: conn is NULL\n"));
 164                 return -1;
 165         }
 166
 167         if (cn->conn->state==IBWC_CONNECTED) {
 168                 rc = ctdb_ibw_send_pkt(cn->conn, data, length);
 169         } else {
 170                 struct ctdb_ibw_msg *p = talloc_zero(cn, struct ctdb_ibw_msg);
 171                 CTDB_NO_MEMORY(node->ctdb, p);
 172
 173                 p->data = talloc_memdup(p, data, length);
 174                 CTDB_NO_MEMORY(node->ctdb, p->data);
 175
 176                 p->length = length;
 177
 178                 DLIST_ADD_AFTER(cn->queue, p, cn->queue_last);
 179                 cn->queue_last = p;
 180                 cn->qcnt++;
 181
 182                 rc = 0;
 183         }
 184
 185         return rc;
 186 }
 187
 188 static void ctdb_ibw_restart(struct ctdb_node *node)
 189 {
 190         /* TODO: implement this method for IB */
 191         DEBUG(DEBUG_ALERT,("WARNING: method restart is not yet implemented for IB\n"));
 192 }
 193
 194 /*
 195  * transport packet allocator - allows transport to control memory for packets
 196  */
 197 static void *ctdb_ibw_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
 198 {
 199         /* TODO: use ibw_alloc_send_buf instead... */
 200         return talloc_size(mem_ctx, size);
 201 }
 202
 203 #ifdef __NOTDEF__
 204
 205 static int ctdb_ibw_stop(struct ctdb_context *cctx)
 206 {
 207         struct ibw_ctx *ictx = talloc_get_type(cctx->private_data, struct ibw_ctx);
 208
 209         assert(ictx!=NULL);
 210         return ibw_stop(ictx);
 211 }
 212
 213 #endif /* __NOTDEF__ */
 214
 215 static const struct ctdb_methods ctdb_ibw_methods = {
 216         .initialise= ctdb_ibw_initialise,
 217         .start     = ctdb_ibw_start,
 218         .queue_pkt = ctdb_ibw_queue_pkt,
 219         .add_node = ctdb_ibw_add_node,
 220         .allocate_pkt = ctdb_ibw_allocate_pkt,
 221         .restart      = ctdb_ibw_restart,
 222
 223 //      .stop = ctdb_ibw_stop
 224 };
 225
 226 /*
 227  * initialise ibw portion of ctdb
 228  */
 229 int ctdb_ibw_init(struct ctdb_context *ctdb)
 230 {
 231         struct ibw_ctx *ictx;
 232
 233         DEBUG(DEBUG_DEBUG, ("ctdb_ibw_init invoked...\n"));
 234         ictx = ibw_init(
 235                 NULL, //struct ibw_initattr *attr, /* TODO */
 236                 0, //int nattr, /* TODO */
 237                 ctdb,
 238                 ctdb_ibw_connstate_handler,
 239                 ctdb_ibw_receive_handler,
 240                 ctdb->ev);
 241
 242         if (ictx==NULL) {
 243                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_init: ibw_init failed\n"));
 244                 return -1;
 245         }
 246
 247         ctdb->methods = &ctdb_ibw_methods;
 248         ctdb->private_data = ictx;
 249
 250         DEBUG(DEBUG_DEBUG, ("ctdb_ibw_init succeeded.\n"));
 251         return 0;
 252 }