/* * Unix SMB/CIFS implementation. * Join infiniband wrapper and ctdb. * * Copyright (C) Sven Oehme <oehmes@de.ibm.com> 2006 * * Major code contributions by Peter Somogyi <psomogyi@gamax.hu> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "lib/events/events.h" #include <system/network.h> #include <assert.h> #include "ctdb_private.h" #include "ibwrapper.h" #include "ibw_ctdb.h" int ctdb_ibw_get_address(struct ctdb_context *ctdb, const char *address, struct in_addr *addr) { if (inet_pton(AF_INET, address, addr) <= 0) { struct hostent *he = gethostbyname(address); if (he == NULL || he->h_length > sizeof(*addr)) { ctdb_set_error(ctdb, "invalid nework address '%s'\n", address); return -1; } memcpy(addr, he->h_addr, he->h_length); } return 0; } int ctdb_ibw_node_connect(struct ctdb_node *node) { struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node); int rc; assert(cn!=NULL); assert(cn->conn!=NULL); struct sockaddr_in sock_out; memset(&sock_out, 0, sizeof(struct sockaddr_in)); sock_out.sin_port = htons(node->address.port); sock_out.sin_family = PF_INET; if (ctdb_ibw_get_address(node->ctdb, node->address.address, &sock_out.sin_addr)) { DEBUG(0, ("ctdb_ibw_node_connect failed\n")); return -1; } rc = ibw_connect(cn->conn, &sock_out, node); if (rc) { DEBUG(0, ("ctdb_ibw_node_connect/ibw_connect failed - retrying...\n")); /* try again once a second */ event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0), ctdb_ibw_node_connect_event, node); } /* continues at ibw_ctdb.c/IBWC_CONNECTED in good case */ return 0; } void ctdb_ibw_node_connect_event(struct event_context *ev, struct timed_event *te, struct timeval t, void *private_data) { struct ctdb_node *node = talloc_get_type(private_data, struct ctdb_node); ctdb_ibw_node_connect(node); } int ctdb_ibw_connstate_handler(struct ibw_ctx *ctx, struct ibw_conn *conn) { if (ctx!=NULL) { /* ctx->state changed */ switch(ctx->state) { case IBWS_INIT: /* ctx start - after ibw_init */ break; case IBWS_READY: /* after ibw_bind & ibw_listen */ break; case IBWS_CONNECT_REQUEST: /* after [IBWS_READY + incoming request] */ /* => [(ibw_accept)IBWS_READY | (ibw_disconnect)STOPPED | ERROR] */ if (ibw_accept(ctx, conn, NULL)) { DEBUG(0, ("connstate_handler/ibw_accept failed\n")); return -1; } /* else continue in IBWC_CONNECTED */ break; case IBWS_STOPPED: /* normal stop <= ibw_disconnect+(IBWS_READY | IBWS_CONNECT_REQUEST) */ /* TODO: have a CTDB upcall for which CTDB should wait in a (final) loop */ break; case IBWS_ERROR: /* abnormal state; ibw_stop must be called after this */ break; default: assert(0); break; } } if (conn!=NULL) { /* conn->state changed */ switch(conn->state) { case IBWC_INIT: /* conn start - internal state */ break; case IBWC_CONNECTED: { /* after ibw_accept or ibw_connect */ struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node); if (node!=NULL) { /* after ibw_connect */ struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node); node->ctdb->upcalls->node_connected(node); ctdb_flush_cn_queue(cn); } else { /* after ibw_accept */ /* NOP in CTDB case */ } } break; case IBWC_DISCONNECTED: { /* after ibw_disconnect */ struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node); if (node!=NULL) node->ctdb->upcalls->node_dead(node); talloc_free(conn); /* normal + intended disconnect => not reconnecting in this layer */ } break; case IBWC_ERROR: { struct ctdb_node *node = talloc_get_type(conn->conn_userdata, struct ctdb_node); if (node!=NULL) { struct ctdb_ibw_node *cn = talloc_get_type(node->private_data, struct ctdb_ibw_node); struct ibw_ctx *ictx = cn->conn->ctx; DEBUG(10, ("IBWC_ERROR, reconnecting...\n")); talloc_free(cn->conn); /* internal queue content is destroyed */ cn->conn = (void *)ibw_conn_new(ictx, node); event_add_timed(node->ctdb->ev, node, timeval_current_ofs(1, 0), ctdb_ibw_node_connect_event, node); } } break; default: assert(0); break; } } return 0; } int ctdb_ibw_receive_handler(struct ibw_conn *conn, void *buf, int n) { struct ctdb_context *ctdb = talloc_get_type(conn->ctx->ctx_userdata, struct ctdb_context); void *buf2; /* future TODO: a solution for removal of this */ assert(ctdb!=NULL); assert(buf!=NULL); assert(conn!=NULL); assert(conn->state==IBWC_CONNECTED); /* so far "buf" is an ib-registered memory area * and being reused for next receive * noticed that HL requires talloc-ed memory to be stolen */ buf2 = talloc_zero_size(conn, n); memcpy(buf2, buf, n); ctdb->upcalls->recv_pkt(ctdb, (uint8_t *)buf2, (uint32_t)n); return 0; }