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 "includes.h"
  24 #include <system/network.h>
  25 #include <assert.h>
  26 #include "ctdb_private.h"
  27 #include "ibwrapper.h"
  28 #include "ibw_ctdb.h"
  29
  30 static int ctdb_ibw_listen(struct ctdb_context *ctdb, int backlog)
  31 {
  32         struct ibw_ctx *ictx = talloc_get_type(ctdb->private_data, struct ibw_ctx);
  33         struct sockaddr_in my_addr;
  34
  35         assert(ictx!=NULL);
  36         memset(&my_addr, 0, sizeof(struct sockaddr_in));
  37         my_addr.sin_port = htons(ctdb->address.port);
  38         my_addr.sin_family = PF_INET;
  39         if (ctdb_ibw_get_address(ctdb, ctdb->address.address, &my_addr.sin_addr))
  40                 return -1;
  41
  42         if (ibw_bind(ictx, &my_addr)) {
  43                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_listen: ibw_bind failed\n"));
  44                 return -1;
  45         }
  46
  47         if (ibw_listen(ictx, backlog)) {
  48                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_listen: ibw_listen failed\n"));
  49                 return -1;
  50         }
  51
  52         return 0;
  53 }
  54
  55 /*
  56  * initialise ibw portion of a ctdb node
  57  */
  58 static int ctdb_ibw_add_node(struct ctdb_node *node)
  59 {
  60         struct ibw_ctx *ictx = talloc_get_type(node->ctdb->private_data, struct ibw_ctx);
  61         struct ctdb_ibw_node *cn = talloc_zero(node, struct ctdb_ibw_node);
  62
  63         assert(cn!=NULL);
  64         cn->conn = ibw_conn_new(ictx, node);
  65         node->private_data = (void *)cn;
  66
  67         return (cn->conn!=NULL ? 0 : -1);
  68 }
  69
  70 /*
  71  * initialise infiniband
  72  */
  73 static int ctdb_ibw_initialise(struct ctdb_context *ctdb)
  74 {
  75         int i, ret;
  76
  77         ret = ctdb_ibw_init(ctdb);
  78         if (ret != 0) {
  79                 return ret;
  80         }
  81
  82         for (i=0; i<ctdb->num_nodes; i++) {
  83                 if (ctdb_ibw_add_node(ctdb->nodes[i]) != 0) {
  84                         DEBUG(DEBUG_CRIT, ("methods->add_node failed at %d\n", i));
  85                         return -1;
  86                 }
  87         }
  88
  89         /* listen on our own address */
  90         if (ctdb_ibw_listen(ctdb, 10)) /* TODO: backlog as param */
  91                 return -1;
  92
  93         return 0;
  94 }
  95
  96
  97 /*
  98  * Start infiniband
  99  */
 100 static int ctdb_ibw_start(struct ctdb_context *ctdb)
 101 {
 102         int i, ret;
 103
 104         /* everything async here */
 105         for (i=0;i<ctdb->num_nodes;i++) {
 106                 struct ctdb_node *node = ctdb->nodes[i];
 107                 if (!ctdb_same_address(&ctdb->address, &node->address)) {
 108                         ctdb_ibw_node_connect(node);
 109                 }
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int ctdb_ibw_send_pkt(struct ibw_conn *conn, uint8_t *data, uint32_t length)
 116 {
 117         void    *buf, *key;
 118
 119         if (ibw_alloc_send_buf(conn, &buf, &key, length)) {
 120                 DEBUG(DEBUG_ERR, ("queue_pkt/ibw_alloc_send_buf failed\n"));
 121                 return -1;
 122         }
 123
 124         memcpy(buf, data, length);
 125         return ibw_send(conn, buf, key, length);
 126 }
 127
 128 int ctdb_flush_cn_queue(struct ctdb_ibw_node *cn)
 129 {
 130         struct ctdb_ibw_msg *p;
 131         int     rc = 0;
 132
 133         while(cn->queue) {
 134                 p = cn->queue;
 135                 rc = ctdb_ibw_send_pkt(cn->conn, p->data, p->length);
 136                 if (rc)
 137                         return -1; /* will be retried later when conn is up */
 138
 139                 DLIST_REMOVE(cn->queue, p);
 140                 cn->qcnt--;
 141                 talloc_free(p); /* it will talloc_free p->data as well */
 142         }
 143         assert(cn->qcnt==0);
 144         /* cn->queue_last = NULL is not needed - see DLIST_ADD_AFTER */
 145
 146         return rc;
 147 }
 148
 149 static int ctdb_ibw_queue_pkt(struct ctdb_node *node, uint8_t *data, uint32_t length)
 150 {
 151         struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node);
 152         int     rc;
 153
 154         assert(length>=sizeof(uint32_t));
 155         assert(cn!=NULL);
 156
 157         if (cn->conn==NULL) {
 158                 DEBUG(DEBUG_ERR, ("ctdb_ibw_queue_pkt: conn is NULL\n"));
 159                 return -1;
 160         }
 161
 162         if (cn->conn->state==IBWC_CONNECTED) {
 163                 rc = ctdb_ibw_send_pkt(cn->conn, data, length);
 164         } else {
 165                 struct ctdb_ibw_msg *p = talloc_zero(cn, struct ctdb_ibw_msg);
 166                 CTDB_NO_MEMORY(node->ctdb, p);
 167
 168                 p->data = talloc_memdup(p, data, length);
 169                 CTDB_NO_MEMORY(node->ctdb, p->data);
 170
 171                 p->length = length;
 172
 173                 DLIST_ADD_AFTER(cn->queue, p, cn->queue_last);
 174                 cn->queue_last = p;
 175                 cn->qcnt++;
 176
 177                 rc = 0;
 178         }
 179
 180         return rc;
 181 }
 182
 183 static void ctdb_ibw_restart(struct ctdb_node *node)
 184 {
 185         /* TODO: implement this method for IB */
 186         DEBUG(DEBUG_ALERT,("WARNING: method restart is not yet implemented for IB\n"));
 187 }
 188
 189 /*
 190  * transport packet allocator - allows transport to control memory for packets
 191  */
 192 static void *ctdb_ibw_allocate_pkt(TALLOC_CTX *mem_ctx, size_t size)
 193 {
 194         /* TODO: use ibw_alloc_send_buf instead... */
 195         return talloc_size(mem_ctx, size);
 196 }
 197
 198 #ifdef __NOTDEF__
 199
 200 static int ctdb_ibw_stop(struct ctdb_context *cctx)
 201 {
 202         struct ibw_ctx *ictx = talloc_get_type(cctx->private_data, struct ibw_ctx);
 203
 204         assert(ictx!=NULL);
 205         return ibw_stop(ictx);
 206 }
 207
 208 #endif /* __NOTDEF__ */
 209
 210 static const struct ctdb_methods ctdb_ibw_methods = {
 211         .initialise= ctdb_ibw_initialise,
 212         .start     = ctdb_ibw_start,
 213         .queue_pkt = ctdb_ibw_queue_pkt,
 214         .add_node = ctdb_ibw_add_node,
 215         .allocate_pkt = ctdb_ibw_allocate_pkt,
 216         .restart      = ctdb_ibw_restart,
 217
 218 //      .stop = ctdb_ibw_stop
 219 };
 220
 221 /*
 222  * initialise ibw portion of ctdb
 223  */
 224 int ctdb_ibw_init(struct ctdb_context *ctdb)
 225 {
 226         struct ibw_ctx *ictx;
 227
 228         DEBUG(DEBUG_DEBUG, ("ctdb_ibw_init invoked...\n"));
 229         ictx = ibw_init(
 230                 NULL, //struct ibw_initattr *attr, /* TODO */
 231                 0, //int nattr, /* TODO */
 232                 ctdb,
 233                 ctdb_ibw_connstate_handler,
 234                 ctdb_ibw_receive_handler,
 235                 ctdb->ev);
 236
 237         if (ictx==NULL) {
 238                 DEBUG(DEBUG_CRIT, ("ctdb_ibw_init: ibw_init failed\n"));
 239                 return -1;
 240         }
 241
 242         ctdb->methods = &ctdb_ibw_methods;
 243         ctdb->private_data = ictx;
 244
 245         DEBUG(DEBUG_DEBUG, ("ctdb_ibw_init succeeded.\n"));
 246         return 0;
 247 }