diff options
Diffstat (limited to 'source4/cluster/ctdb/server/ctdb_call.c')
| -rw-r--r-- | source4/cluster/ctdb/server/ctdb_call.c | 737 |
1 files changed, 0 insertions, 737 deletions
diff --git a/source4/cluster/ctdb/server/ctdb_call.c b/source4/cluster/ctdb/server/ctdb_call.c deleted file mode 100644 index 0d09241d52..0000000000 --- a/source4/cluster/ctdb/server/ctdb_call.c +++ /dev/null @@ -1,737 +0,0 @@ -/* - ctdb_call protocol code - - Copyright (C) Andrew Tridgell 2006 - - 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/>. -*/ -/* - see http://wiki.samba.org/index.php/Samba_%26_Clustering for - protocol design and packet details -*/ -#include "includes.h" -#include "lib/events/events.h" -#include "../tdb/include/tdb.h" -#include "lib/util/dlinklist.h" -#include "system/network.h" -#include "system/filesys.h" -#include "../include/ctdb_private.h" - -/* - find the ctdb_db from a db index - */ - struct ctdb_db_context *find_ctdb_db(struct ctdb_context *ctdb, uint32_t id) -{ - struct ctdb_db_context *ctdb_db; - - for (ctdb_db=ctdb->db_list; ctdb_db; ctdb_db=ctdb_db->next) { - if (ctdb_db->db_id == id) { - break; - } - } - return ctdb_db; -} - - -/* - a varient of input packet that can be used in lock requeue -*/ -static void ctdb_call_input_pkt(void *p, struct ctdb_req_header *hdr) -{ - struct ctdb_context *ctdb = talloc_get_type(p, struct ctdb_context); - ctdb_input_pkt(ctdb, hdr); -} - - -/* - send an error reply -*/ -static void ctdb_send_error(struct ctdb_context *ctdb, - struct ctdb_req_header *hdr, uint32_t status, - const char *fmt, ...) PRINTF_ATTRIBUTE(4,5); -static void ctdb_send_error(struct ctdb_context *ctdb, - struct ctdb_req_header *hdr, uint32_t status, - const char *fmt, ...) -{ - va_list ap; - struct ctdb_reply_error *r; - char *msg; - int msglen, len; - - va_start(ap, fmt); - msg = talloc_vasprintf(ctdb, fmt, ap); - if (msg == NULL) { - ctdb_fatal(ctdb, "Unable to allocate error in ctdb_send_error\n"); - } - va_end(ap); - - msglen = strlen(msg)+1; - len = offsetof(struct ctdb_reply_error, msg); - r = ctdb_transport_allocate(ctdb, msg, CTDB_REPLY_ERROR, len + msglen, - struct ctdb_reply_error); - CTDB_NO_MEMORY_FATAL(ctdb, r); - - r->hdr.destnode = hdr->srcnode; - r->hdr.reqid = hdr->reqid; - r->status = status; - r->msglen = msglen; - memcpy(&r->msg[0], msg, msglen); - - ctdb_queue_packet(ctdb, &r->hdr); - - talloc_free(msg); -} - - -/* - send a redirect reply -*/ -static void ctdb_call_send_redirect(struct ctdb_context *ctdb, - TDB_DATA key, - struct ctdb_req_call *c, - struct ctdb_ltdb_header *header) -{ - - uint32_t lmaster = ctdb_lmaster(ctdb, &key); - if (ctdb->vnn == lmaster) { - c->hdr.destnode = header->dmaster; - } else if ((c->hopcount % ctdb->tunable.max_redirect_count) == 0) { - c->hdr.destnode = lmaster; - } else { - c->hdr.destnode = header->dmaster; - } - c->hopcount++; - ctdb_queue_packet(ctdb, &c->hdr); -} - - -/* - send a dmaster reply - - caller must have the chainlock before calling this routine. Caller must be - the lmaster -*/ -static void ctdb_send_dmaster_reply(struct ctdb_db_context *ctdb_db, - struct ctdb_ltdb_header *header, - TDB_DATA key, TDB_DATA data, - uint32_t new_dmaster, - uint32_t reqid) -{ - struct ctdb_context *ctdb = ctdb_db->ctdb; - struct ctdb_reply_dmaster *r; - int ret, len; - TALLOC_CTX *tmp_ctx; - - if (ctdb->vnn != ctdb_lmaster(ctdb, &key)) { - DEBUG(0,(__location__ " Caller is not lmaster!\n")); - return; - } - - header->dmaster = new_dmaster; - ret = ctdb_ltdb_store(ctdb_db, key, header, data); - if (ret != 0) { - ctdb_fatal(ctdb, "ctdb_req_dmaster unable to update dmaster"); - return; - } - - /* put the packet on a temporary context, allowing us to safely free - it below even if ctdb_reply_dmaster() has freed it already */ - tmp_ctx = talloc_new(ctdb); - - /* send the CTDB_REPLY_DMASTER */ - len = offsetof(struct ctdb_reply_dmaster, data) + key.dsize + data.dsize; - r = ctdb_transport_allocate(ctdb, tmp_ctx, CTDB_REPLY_DMASTER, len, - struct ctdb_reply_dmaster); - CTDB_NO_MEMORY_FATAL(ctdb, r); - - r->hdr.destnode = new_dmaster; - r->hdr.reqid = reqid; - r->rsn = header->rsn; - r->keylen = key.dsize; - r->datalen = data.dsize; - r->db_id = ctdb_db->db_id; - memcpy(&r->data[0], key.dptr, key.dsize); - memcpy(&r->data[key.dsize], data.dptr, data.dsize); - - ctdb_queue_packet(ctdb, &r->hdr); - - talloc_free(tmp_ctx); -} - -/* - send a dmaster request (give another node the dmaster for a record) - - This is always sent to the lmaster, which ensures that the lmaster - always knows who the dmaster is. The lmaster will then send a - CTDB_REPLY_DMASTER to the new dmaster -*/ -static void ctdb_call_send_dmaster(struct ctdb_db_context *ctdb_db, - struct ctdb_req_call *c, - struct ctdb_ltdb_header *header, - TDB_DATA *key, TDB_DATA *data) -{ - struct ctdb_req_dmaster *r; - struct ctdb_context *ctdb = ctdb_db->ctdb; - int len; - uint32_t lmaster = ctdb_lmaster(ctdb, key); - - if (lmaster == ctdb->vnn) { - ctdb_send_dmaster_reply(ctdb_db, header, *key, *data, - c->hdr.srcnode, c->hdr.reqid); - return; - } - - len = offsetof(struct ctdb_req_dmaster, data) + key->dsize + data->dsize; - r = ctdb_transport_allocate(ctdb, ctdb, CTDB_REQ_DMASTER, len, - struct ctdb_req_dmaster); - CTDB_NO_MEMORY_FATAL(ctdb, r); - r->hdr.destnode = lmaster; - r->hdr.reqid = c->hdr.reqid; - r->db_id = c->db_id; - r->rsn = header->rsn; - r->dmaster = c->hdr.srcnode; - r->keylen = key->dsize; - r->datalen = data->dsize; - memcpy(&r->data[0], key->dptr, key->dsize); - memcpy(&r->data[key->dsize], data->dptr, data->dsize); - - header->dmaster = c->hdr.srcnode; - if (ctdb_ltdb_store(ctdb_db, *key, header, *data) != 0) { - ctdb_fatal(ctdb, "Failed to store record in ctdb_call_send_dmaster"); - } - - ctdb_queue_packet(ctdb, &r->hdr); - - talloc_free(r); -} - -/* - called when a CTDB_REPLY_DMASTER packet comes in, or when the lmaster - gets a CTDB_REQUEST_DMASTER for itself. We become the dmaster. - - must be called with the chainlock held. This function releases the chainlock -*/ -static void ctdb_become_dmaster(struct ctdb_db_context *ctdb_db, - uint32_t reqid, TDB_DATA key, TDB_DATA data, - uint64_t rsn) -{ - struct ctdb_call_state *state; - struct ctdb_context *ctdb = ctdb_db->ctdb; - struct ctdb_ltdb_header header; - - DEBUG(2,("vnn %u dmaster response %08x\n", ctdb->vnn, ctdb_hash(&key))); - - ZERO_STRUCT(header); - header.rsn = rsn + 1; - header.dmaster = ctdb->vnn; - - if (ctdb_ltdb_store(ctdb_db, key, &header, data) != 0) { - ctdb_fatal(ctdb, "ctdb_reply_dmaster store failed\n"); - ctdb_ltdb_unlock(ctdb_db, key); - return; - } - - state = ctdb_reqid_find(ctdb, reqid, struct ctdb_call_state); - - if (state == NULL) { - DEBUG(0,("vnn %u Invalid reqid %u in ctdb_become_dmaster\n", - ctdb->vnn, reqid)); - ctdb_ltdb_unlock(ctdb_db, key); - return; - } - - if (reqid != state->reqid) { - /* we found a record but it was the wrong one */ - DEBUG(0, ("Dropped orphan in ctdb_become_dmaster with reqid:%u\n",reqid)); - ctdb_ltdb_unlock(ctdb_db, key); - return; - } - - ctdb_call_local(ctdb_db, &state->call, &header, state, &data, ctdb->vnn); - - ctdb_ltdb_unlock(ctdb_db, state->call.key); - - state->state = CTDB_CALL_DONE; - if (state->async.fn) { - state->async.fn(state); - } -} - - - -/* - called when a CTDB_REQ_DMASTER packet comes in - - this comes into the lmaster for a record when the current dmaster - wants to give up the dmaster role and give it to someone else -*/ -void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) -{ - struct ctdb_req_dmaster *c = (struct ctdb_req_dmaster *)hdr; - TDB_DATA key, data, data2; - struct ctdb_ltdb_header header; - struct ctdb_db_context *ctdb_db; - int ret; - - key.dptr = c->data; - key.dsize = c->keylen; - data.dptr = c->data + c->keylen; - data.dsize = c->datalen; - - ctdb_db = find_ctdb_db(ctdb, c->db_id); - if (!ctdb_db) { - ctdb_send_error(ctdb, hdr, -1, - "Unknown database in request. db_id==0x%08x", - c->db_id); - return; - } - - /* fetch the current record */ - ret = ctdb_ltdb_lock_fetch_requeue(ctdb_db, key, &header, hdr, &data2, - ctdb_call_input_pkt, ctdb, False); - if (ret == -1) { - ctdb_fatal(ctdb, "ctdb_req_dmaster failed to fetch record"); - return; - } - if (ret == -2) { - DEBUG(2,(__location__ " deferring ctdb_request_dmaster\n")); - return; - } - - if (ctdb_lmaster(ctdb, &key) != ctdb->vnn) { - DEBUG(0,("vnn %u dmaster request to non-lmaster lmaster=%u gen=%u curgen=%u\n", - ctdb->vnn, ctdb_lmaster(ctdb, &key), - hdr->generation, ctdb->vnn_map->generation)); - ctdb_fatal(ctdb, "ctdb_req_dmaster to non-lmaster"); - } - - DEBUG(2,("vnn %u dmaster request on %08x for %u from %u\n", - ctdb->vnn, ctdb_hash(&key), c->dmaster, c->hdr.srcnode)); - - /* its a protocol error if the sending node is not the current dmaster */ - if (header.dmaster != hdr->srcnode) { - DEBUG(0,("vnn %u dmaster request non-master %u dmaster=%u key %08x dbid 0x%08x gen=%u curgen=%u\n", - ctdb->vnn, hdr->srcnode, header.dmaster, ctdb_hash(&key), - ctdb_db->db_id, hdr->generation, ctdb->vnn_map->generation)); - ctdb_fatal(ctdb, "ctdb_req_dmaster from non-master"); - return; - } - - /* use the rsn from the sending node */ - header.rsn = c->rsn; - - /* check if the new dmaster is the lmaster, in which case we - skip the dmaster reply */ - if (c->dmaster == ctdb->vnn) { - ctdb_become_dmaster(ctdb_db, hdr->reqid, key, data, c->rsn); - } else { - ctdb_send_dmaster_reply(ctdb_db, &header, key, data, c->dmaster, hdr->reqid); - ctdb_ltdb_unlock(ctdb_db, key); - } -} - - -/* - called when a CTDB_REQ_CALL packet comes in -*/ -void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) -{ - struct ctdb_req_call *c = (struct ctdb_req_call *)hdr; - TDB_DATA data; - struct ctdb_reply_call *r; - int ret, len; - struct ctdb_ltdb_header header; - struct ctdb_call call; - struct ctdb_db_context *ctdb_db; - - ctdb_db = find_ctdb_db(ctdb, c->db_id); - if (!ctdb_db) { - ctdb_send_error(ctdb, hdr, -1, - "Unknown database in request. db_id==0x%08x", - c->db_id); - return; - } - - call.call_id = c->callid; - call.key.dptr = c->data; - call.key.dsize = c->keylen; - call.call_data.dptr = c->data + c->keylen; - call.call_data.dsize = c->calldatalen; - - /* determine if we are the dmaster for this key. This also - fetches the record data (if any), thus avoiding a 2nd fetch of the data - if the call will be answered locally */ - - ret = ctdb_ltdb_lock_fetch_requeue(ctdb_db, call.key, &header, hdr, &data, - ctdb_call_input_pkt, ctdb, False); - if (ret == -1) { - ctdb_send_error(ctdb, hdr, ret, "ltdb fetch failed in ctdb_request_call"); - return; - } - if (ret == -2) { - DEBUG(2,(__location__ " deferred ctdb_request_call\n")); - return; - } - - /* if we are not the dmaster, then send a redirect to the - requesting node */ - if (header.dmaster != ctdb->vnn) { - talloc_free(data.dptr); - ctdb_call_send_redirect(ctdb, call.key, c, &header); - ctdb_ltdb_unlock(ctdb_db, call.key); - return; - } - - if (c->hopcount > ctdb->statistics.max_hop_count) { - ctdb->statistics.max_hop_count = c->hopcount; - } - - /* if this nodes has done enough consecutive calls on the same record - then give them the record - or if the node requested an immediate migration - */ - if ( c->hdr.srcnode != ctdb->vnn && - ((header.laccessor == c->hdr.srcnode - && header.lacount >= ctdb->tunable.max_lacount) - || (c->flags & CTDB_IMMEDIATE_MIGRATION)) ) { - DEBUG(2,("vnn %u starting migration of %08x to %u\n", - ctdb->vnn, ctdb_hash(&call.key), c->hdr.srcnode)); - ctdb_call_send_dmaster(ctdb_db, c, &header, &call.key, &data); - talloc_free(data.dptr); - ctdb_ltdb_unlock(ctdb_db, call.key); - return; - } - - ctdb_call_local(ctdb_db, &call, &header, hdr, &data, c->hdr.srcnode); - - ctdb_ltdb_unlock(ctdb_db, call.key); - - len = offsetof(struct ctdb_reply_call, data) + call.reply_data.dsize; - r = ctdb_transport_allocate(ctdb, ctdb, CTDB_REPLY_CALL, len, - struct ctdb_reply_call); - CTDB_NO_MEMORY_FATAL(ctdb, r); - r->hdr.destnode = hdr->srcnode; - r->hdr.reqid = hdr->reqid; - r->status = call.status; - r->datalen = call.reply_data.dsize; - if (call.reply_data.dsize) { - memcpy(&r->data[0], call.reply_data.dptr, call.reply_data.dsize); - } - - ctdb_queue_packet(ctdb, &r->hdr); - - talloc_free(r); -} - -/* - called when a CTDB_REPLY_CALL packet comes in - - This packet comes in response to a CTDB_REQ_CALL request packet. It - contains any reply data from the call -*/ -void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) -{ - struct ctdb_reply_call *c = (struct ctdb_reply_call *)hdr; - struct ctdb_call_state *state; - - state = ctdb_reqid_find(ctdb, hdr->reqid, struct ctdb_call_state); - if (state == NULL) { - DEBUG(0, (__location__ " reqid %u not found\n", hdr->reqid)); - return; - } - - if (hdr->reqid != state->reqid) { - /* we found a record but it was the wrong one */ - DEBUG(0, ("Dropped orphaned call reply with reqid:%u\n",hdr->reqid)); - return; - } - - state->call.reply_data.dptr = c->data; - state->call.reply_data.dsize = c->datalen; - state->call.status = c->status; - - talloc_steal(state, c); - - state->state = CTDB_CALL_DONE; - if (state->async.fn) { - state->async.fn(state); - } -} - - -/* - called when a CTDB_REPLY_DMASTER packet comes in - - This packet comes in from the lmaster response to a CTDB_REQ_CALL - request packet. It means that the current dmaster wants to give us - the dmaster role -*/ -void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) -{ - struct ctdb_reply_dmaster *c = (struct ctdb_reply_dmaster *)hdr; - struct ctdb_db_context *ctdb_db; - TDB_DATA key, data; - int ret; - - ctdb_db = find_ctdb_db(ctdb, c->db_id); - if (ctdb_db == NULL) { - DEBUG(0,("Unknown db_id 0x%x in ctdb_reply_dmaster\n", c->db_id)); - return; - } - - key.dptr = c->data; - key.dsize = c->keylen; - data.dptr = &c->data[key.dsize]; - data.dsize = c->datalen; - - ret = ctdb_ltdb_lock_requeue(ctdb_db, key, hdr, - ctdb_call_input_pkt, ctdb, False); - if (ret == -2) { - return; - } - if (ret != 0) { - DEBUG(0,(__location__ " Failed to get lock in ctdb_reply_dmaster\n")); - return; - } - - ctdb_become_dmaster(ctdb_db, hdr->reqid, key, data, c->rsn); -} - - -/* - called when a CTDB_REPLY_ERROR packet comes in -*/ -void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr) -{ - struct ctdb_reply_error *c = (struct ctdb_reply_error *)hdr; - struct ctdb_call_state *state; - - state = ctdb_reqid_find(ctdb, hdr->reqid, struct ctdb_call_state); - if (state == NULL) { - DEBUG(0,("vnn %u Invalid reqid %u in ctdb_reply_error\n", - ctdb->vnn, hdr->reqid)); - return; - } - - if (hdr->reqid != state->reqid) { - /* we found a record but it was the wrong one */ - DEBUG(0, ("Dropped orphaned error reply with reqid:%u\n",hdr->reqid)); - return; - } - - talloc_steal(state, c); - - state->state = CTDB_CALL_ERROR; - state->errmsg = (char *)c->msg; - if (state->async.fn) { - state->async.fn(state); - } -} - - -/* - destroy a ctdb_call -*/ -static int ctdb_call_destructor(struct ctdb_call_state *state) -{ - DLIST_REMOVE(state->ctdb_db->ctdb->pending_calls, state); - ctdb_reqid_remove(state->ctdb_db->ctdb, state->reqid); - return 0; -} - - -/* - called when a ctdb_call needs to be resent after a reconfigure event -*/ -static void ctdb_call_resend(struct ctdb_call_state *state) -{ - struct ctdb_context *ctdb = state->ctdb_db->ctdb; - - state->generation = ctdb->vnn_map->generation; - - /* use a new reqid, in case the old reply does eventually come in */ - ctdb_reqid_remove(ctdb, state->reqid); - state->reqid = ctdb_reqid_new(ctdb, state); - state->c->hdr.reqid = state->reqid; - - /* update the generation count for this request, so its valid with the new vnn_map */ - state->c->hdr.generation = state->generation; - - /* send the packet to ourselves, it will be redirected appropriately */ - state->c->hdr.destnode = ctdb->vnn; - - ctdb_queue_packet(ctdb, &state->c->hdr); - DEBUG(0,("resent ctdb_call\n")); -} - -/* - resend all pending calls on recovery - */ -void ctdb_call_resend_all(struct ctdb_context *ctdb) -{ - struct ctdb_call_state *state, *next; - for (state=ctdb->pending_calls;state;state=next) { - next = state->next; - ctdb_call_resend(state); - } -} - -/* - this allows the caller to setup a async.fn -*/ -static void call_local_trigger(struct event_context *ev, struct timed_event *te, - struct timeval t, void *private_data) -{ - struct ctdb_call_state *state = talloc_get_type(private_data, struct ctdb_call_state); - if (state->async.fn) { - state->async.fn(state); - } -} - - -/* - construct an event driven local ctdb_call - - this is used so that locally processed ctdb_call requests are processed - in an event driven manner -*/ -struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db, - struct ctdb_call *call, - struct ctdb_ltdb_header *header, - TDB_DATA *data) -{ - struct ctdb_call_state *state; - struct ctdb_context *ctdb = ctdb_db->ctdb; - int ret; - - state = talloc_zero(ctdb_db, struct ctdb_call_state); - CTDB_NO_MEMORY_NULL(ctdb, state); - - talloc_steal(state, data->dptr); - - state->state = CTDB_CALL_DONE; - state->call = *call; - state->ctdb_db = ctdb_db; - - ret = ctdb_call_local(ctdb_db, &state->call, header, state, data, ctdb->vnn); - - event_add_timed(ctdb->ev, state, timeval_zero(), call_local_trigger, state); - - return state; -} - - -/* - make a remote ctdb call - async send. Called in daemon context. - - This constructs a ctdb_call request and queues it for processing. - This call never blocks. -*/ -struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db, - struct ctdb_call *call, - struct ctdb_ltdb_header *header) -{ - uint32_t len; - struct ctdb_call_state *state; - struct ctdb_context *ctdb = ctdb_db->ctdb; - - state = talloc_zero(ctdb_db, struct ctdb_call_state); - CTDB_NO_MEMORY_NULL(ctdb, state); - state->reqid = ctdb_reqid_new(ctdb, state); - state->ctdb_db = ctdb_db; - talloc_set_destructor(state, ctdb_call_destructor); - - len = offsetof(struct ctdb_req_call, data) + call->key.dsize + call->call_data.dsize; - state->c = ctdb_transport_allocate(ctdb, state, CTDB_REQ_CALL, len, - struct ctdb_req_call); - CTDB_NO_MEMORY_NULL(ctdb, state->c); - state->c->hdr.destnode = header->dmaster; - - /* this limits us to 16k outstanding messages - not unreasonable */ - state->c->hdr.reqid = state->reqid; - state->c->flags = call->flags; - state->c->db_id = ctdb_db->db_id; - state->c->callid = call->call_id; - state->c->hopcount = 0; - state->c->keylen = call->key.dsize; - state->c->calldatalen = call->call_data.dsize; - memcpy(&state->c->data[0], call->key.dptr, call->key.dsize); - memcpy(&state->c->data[call->key.dsize], - call->call_data.dptr, call->call_data.dsize); - state->call = *call; - state->call.call_data.dptr = &state->c->data[call->key.dsize]; - state->call.key.dptr = &state->c->data[0]; - - state->state = CTDB_CALL_WAIT; - state->generation = ctdb->vnn_map->generation; - - DLIST_ADD(ctdb->pending_calls, state); - - ctdb_queue_packet(ctdb, &state->c->hdr); - - return state; -} - -/* - make a remote ctdb call - async recv - called in daemon context - - This is called when the program wants to wait for a ctdb_call to complete and get the - results. This call will block unless the call has already completed. -*/ -int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call) -{ - while (state->state < CTDB_CALL_DONE) { - event_loop_once(state->ctdb_db->ctdb->ev); - } - if (state->state != CTDB_CALL_DONE) { - ctdb_set_error(state->ctdb_db->ctdb, "%s", state->errmsg); - talloc_free(state); - return -1; - } - - if (state->call.reply_data.dsize) { - call->reply_data.dptr = talloc_memdup(state->ctdb_db->ctdb, - state->call.reply_data.dptr, - state->call.reply_data.dsize); - call->reply_data.dsize = state->call.reply_data.dsize; - } else { - call->reply_data.dptr = NULL; - call->reply_data.dsize = 0; - } - call->status = state->call.status; - talloc_free(state); - return 0; -} - - -/* - send a keepalive packet to the other node -*/ -void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode) -{ - struct ctdb_req_keepalive *r; - - r = ctdb_transport_allocate(ctdb, ctdb, CTDB_REQ_KEEPALIVE, - sizeof(struct ctdb_req_keepalive), - struct ctdb_req_keepalive); - CTDB_NO_MEMORY_FATAL(ctdb, r); - r->hdr.destnode = destnode; - r->hdr.reqid = 0; - - ctdb->statistics.keepalive_packets_sent++; - - ctdb_queue_packet(ctdb, &r->hdr); - - talloc_free(r); -} |