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https://git.proxmox.com/git/mirror_corosync
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0ad2494ae7
Signed-off-by: Angus Salkeld <asalkeld@redhat.com> Reviewed-by: Steven Dake <sdake@redhat.com>
4445 lines
121 KiB
C
4445 lines
121 KiB
C
/*
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* Copyright (c) 2003-2006 MontaVista Software, Inc.
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* Copyright (c) 2006-2009 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Steven Dake (sdake@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the MontaVista Software, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* The first version of this code was based upon Yair Amir's PhD thesis:
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* http://www.cs.jhu.edu/~yairamir/phd.ps) (ch4,5).
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*
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* The current version of totemsrp implements the Totem protocol specified in:
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* http://citeseer.ist.psu.edu/amir95totem.html
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*
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* The deviations from the above published protocols are:
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* - encryption of message contents with SOBER128
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* - authentication of meessage contents with SHA1/HMAC
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* - token hold mode where token doesn't rotate on unused ring - reduces cpu
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* usage on 1.6ghz xeon from 35% to less then .1 % as measured by top
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*/
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#include <config.h>
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#include <assert.h>
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#ifdef HAVE_ALLOCA_H
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#include <alloca.h>
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#endif
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <sys/un.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sched.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/poll.h>
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#include <limits.h>
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#include <corosync/swab.h>
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#include <corosync/cs_queue.h>
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#include <corosync/sq.h>
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#include <corosync/list.h>
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#include <corosync/hdb.h>
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#include <corosync/totem/coropoll.h>
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#define LOGSYS_UTILS_ONLY 1
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#include <corosync/engine/logsys.h>
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#include "totemsrp.h"
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#include "totemrrp.h"
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#include "totemnet.h"
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#include "wthread.h"
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#include "crypto.h"
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#include "tlist.h"
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#define LOCALHOST_IP inet_addr("127.0.0.1")
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#define QUEUE_RTR_ITEMS_SIZE_MAX 16384 /* allow 16384 retransmit items */
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#define RETRANS_MESSAGE_QUEUE_SIZE_MAX 16384 /* allow 500 messages to be queued */
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#define RECEIVED_MESSAGE_QUEUE_SIZE_MAX 500 /* allow 500 messages to be queued */
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#define MAXIOVS 5
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#define RETRANSMIT_ENTRIES_MAX 30
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#define TOKEN_SIZE_MAX 64000 /* bytes */
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#define LEAVE_DUMMY_NODEID 0
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/*
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* Rollover handling:
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* SEQNO_START_MSG is the starting sequence number after a new configuration
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* This should remain zero, unless testing overflow in which case
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* 0x7ffff000 and 0xfffff000 are good starting values.
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*
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* SEQNO_START_TOKEN is the starting sequence number after a new configuration
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* for a token. This should remain zero, unless testing overflow in which
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* case 07fffff00 or 0xffffff00 are good starting values.
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*
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* SEQNO_START_MSG is the starting sequence number after a new configuration
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* This should remain zero, unless testing overflow in which case
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* 0x7ffff000 and 0xfffff000 are good values to start with
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*/
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#define SEQNO_START_MSG 0x0
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#define SEQNO_START_TOKEN 0x0
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/*
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* These can be used ot test different rollover points
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* #define SEQNO_START_MSG 0xfffffe00
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* #define SEQNO_START_TOKEN 0xfffffe00
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*/
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/*
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* These can be used to test the error recovery algorithms
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* #define TEST_DROP_ORF_TOKEN_PERCENTAGE 30
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* #define TEST_DROP_COMMIT_TOKEN_PERCENTAGE 30
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* #define TEST_DROP_MCAST_PERCENTAGE 50
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* #define TEST_RECOVERY_MSG_COUNT 300
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*/
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/*
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* we compare incoming messages to determine if their endian is
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* different - if so convert them
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*
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* do not change
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*/
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#define ENDIAN_LOCAL 0xff22
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enum message_type {
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MESSAGE_TYPE_ORF_TOKEN = 0, /* Ordering, Reliability, Flow (ORF) control Token */
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MESSAGE_TYPE_MCAST = 1, /* ring ordered multicast message */
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MESSAGE_TYPE_MEMB_MERGE_DETECT = 2, /* merge rings if there are available rings */
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MESSAGE_TYPE_MEMB_JOIN = 3, /* membership join message */
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MESSAGE_TYPE_MEMB_COMMIT_TOKEN = 4, /* membership commit token */
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MESSAGE_TYPE_TOKEN_HOLD_CANCEL = 5, /* cancel the holding of the token */
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};
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enum encapsulation_type {
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MESSAGE_ENCAPSULATED = 1,
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MESSAGE_NOT_ENCAPSULATED = 2
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};
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/*
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* New membership algorithm local variables
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*/
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struct srp_addr {
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struct totem_ip_address addr[INTERFACE_MAX];
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};
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struct consensus_list_item {
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struct srp_addr addr;
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int set;
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};
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struct token_callback_instance {
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struct list_head list;
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int (*callback_fn) (enum totem_callback_token_type type, const void *);
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enum totem_callback_token_type callback_type;
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int delete;
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void *data;
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};
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struct totemsrp_socket {
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int mcast;
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int token;
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};
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struct message_header {
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char type;
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char encapsulated;
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unsigned short endian_detector;
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unsigned int nodeid;
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} __attribute__((packed));
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struct mcast {
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struct message_header header;
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struct srp_addr system_from;
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unsigned int seq;
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int this_seqno;
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struct memb_ring_id ring_id;
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unsigned int node_id;
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int guarantee;
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} __attribute__((packed));
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struct rtr_item {
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struct memb_ring_id ring_id;
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unsigned int seq;
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}__attribute__((packed));
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struct orf_token {
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struct message_header header;
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unsigned int seq;
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unsigned int token_seq;
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unsigned int aru;
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unsigned int aru_addr;
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struct memb_ring_id ring_id;
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unsigned int backlog;
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unsigned int fcc;
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int retrans_flg;
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int rtr_list_entries;
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struct rtr_item rtr_list[0];
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}__attribute__((packed));
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struct memb_join {
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struct message_header header;
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struct srp_addr system_from;
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unsigned int proc_list_entries;
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unsigned int failed_list_entries;
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unsigned long long ring_seq;
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unsigned char end_of_memb_join[0];
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/*
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* These parts of the data structure are dynamic:
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* struct srp_addr proc_list[];
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* struct srp_addr failed_list[];
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*/
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} __attribute__((packed));
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struct memb_merge_detect {
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struct message_header header;
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struct srp_addr system_from;
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struct memb_ring_id ring_id;
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} __attribute__((packed));
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struct token_hold_cancel {
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struct message_header header;
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struct memb_ring_id ring_id;
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} __attribute__((packed));
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struct memb_commit_token_memb_entry {
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struct memb_ring_id ring_id;
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unsigned int aru;
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unsigned int high_delivered;
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unsigned int received_flg;
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}__attribute__((packed));
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struct memb_commit_token {
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struct message_header header;
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unsigned int token_seq;
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struct memb_ring_id ring_id;
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unsigned int retrans_flg;
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int memb_index;
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int addr_entries;
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unsigned char end_of_commit_token[0];
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/*
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* These parts of the data structure are dynamic:
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*
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* struct srp_addr addr[PROCESSOR_COUNT_MAX];
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* struct memb_commit_token_memb_entry memb_list[PROCESSOR_COUNT_MAX];
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*/
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}__attribute__((packed));
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struct message_item {
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struct mcast *mcast;
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unsigned int msg_len;
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};
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struct sort_queue_item {
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struct mcast *mcast;
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unsigned int msg_len;
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};
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struct orf_token_mcast_thread_state {
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char iobuf[9000];
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prng_state prng_state;
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};
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enum memb_state {
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MEMB_STATE_OPERATIONAL = 1,
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MEMB_STATE_GATHER = 2,
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MEMB_STATE_COMMIT = 3,
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MEMB_STATE_RECOVERY = 4
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};
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struct totemsrp_instance {
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int iface_changes;
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int failed_to_recv;
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/*
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* Flow control mcasts and remcasts on last and current orf_token
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*/
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int fcc_remcast_last;
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int fcc_mcast_last;
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int fcc_remcast_current;
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struct consensus_list_item consensus_list[PROCESSOR_COUNT_MAX];
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int consensus_list_entries;
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struct srp_addr my_id;
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struct srp_addr my_proc_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_failed_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_new_memb_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_trans_memb_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_memb_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_deliver_memb_list[PROCESSOR_COUNT_MAX];
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struct srp_addr my_left_memb_list[PROCESSOR_COUNT_MAX];
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int my_proc_list_entries;
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int my_failed_list_entries;
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int my_new_memb_entries;
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int my_trans_memb_entries;
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int my_memb_entries;
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int my_deliver_memb_entries;
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int my_left_memb_entries;
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struct memb_ring_id my_ring_id;
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struct memb_ring_id my_old_ring_id;
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int my_aru_count;
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int my_merge_detect_timeout_outstanding;
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unsigned int my_last_aru;
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int my_seq_unchanged;
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int my_received_flg;
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unsigned int my_high_seq_received;
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unsigned int my_install_seq;
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int my_rotation_counter;
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int my_set_retrans_flg;
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int my_retrans_flg_count;
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unsigned int my_high_ring_delivered;
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int heartbeat_timeout;
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/*
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* Queues used to order, deliver, and recover messages
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*/
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struct cs_queue new_message_queue;
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struct cs_queue retrans_message_queue;
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struct sq regular_sort_queue;
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struct sq recovery_sort_queue;
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/*
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* Received up to and including
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*/
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unsigned int my_aru;
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unsigned int my_high_delivered;
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struct list_head token_callback_received_listhead;
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struct list_head token_callback_sent_listhead;
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char orf_token_retransmit[TOKEN_SIZE_MAX];
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int orf_token_retransmit_size;
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unsigned int my_token_seq;
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/*
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* Timers
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*/
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poll_timer_handle timer_pause_timeout;
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poll_timer_handle timer_orf_token_timeout;
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poll_timer_handle timer_orf_token_retransmit_timeout;
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poll_timer_handle timer_orf_token_hold_retransmit_timeout;
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poll_timer_handle timer_merge_detect_timeout;
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poll_timer_handle memb_timer_state_gather_join_timeout;
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poll_timer_handle memb_timer_state_gather_consensus_timeout;
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poll_timer_handle memb_timer_state_commit_timeout;
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poll_timer_handle timer_heartbeat_timeout;
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/*
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* Function and data used to log messages
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*/
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int totemsrp_log_level_security;
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int totemsrp_log_level_error;
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int totemsrp_log_level_warning;
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int totemsrp_log_level_notice;
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int totemsrp_log_level_debug;
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int totemsrp_subsys_id;
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void (*totemsrp_log_printf) (
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unsigned int rec_ident,
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const char *function,
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const char *file,
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int line,
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const char *format, ...)__attribute__((format(printf, 5, 6)));;
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enum memb_state memb_state;
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//TODO struct srp_addr next_memb;
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hdb_handle_t totemsrp_poll_handle;
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struct totem_ip_address mcast_address;
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void (*totemsrp_deliver_fn) (
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unsigned int nodeid,
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const void *msg,
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unsigned int msg_len,
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int endian_conversion_required);
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void (*totemsrp_confchg_fn) (
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enum totem_configuration_type configuration_type,
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const unsigned int *member_list, size_t member_list_entries,
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const unsigned int *left_list, size_t left_list_entries,
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const unsigned int *joined_list, size_t joined_list_entries,
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const struct memb_ring_id *ring_id);
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void (*totemsrp_service_ready_fn) (void);
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int global_seqno;
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int my_token_held;
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unsigned long long token_ring_id_seq;
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unsigned int last_released;
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unsigned int set_aru;
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int old_ring_state_aru;
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unsigned int old_ring_state_high_seq_received;
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unsigned int my_last_seq;
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struct timeval tv_old;
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void *totemrrp_context;
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struct totem_config *totem_config;
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unsigned int use_heartbeat;
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unsigned int my_trc;
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unsigned int my_pbl;
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unsigned int my_cbl;
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unsigned long long int pause_timestamp;
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struct memb_commit_token *commit_token;
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totemsrp_stats_t stats;
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void * token_recv_event_handle;
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void * token_sent_event_handle;
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char commit_token_storage[9000];
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};
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struct message_handlers {
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int count;
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int (*handler_functions[6]) (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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};
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/*
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* forward decls
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*/
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static int message_handler_orf_token (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static int message_handler_mcast (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static int message_handler_memb_merge_detect (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static int message_handler_memb_join (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static int message_handler_memb_commit_token (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static int message_handler_token_hold_cancel (
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struct totemsrp_instance *instance,
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const void *msg,
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size_t msg_len,
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int endian_conversion_needed);
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static void totemsrp_instance_initialize (struct totemsrp_instance *instance);
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static unsigned int main_msgs_missing (void);
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static void main_token_seqid_get (
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const void *msg,
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unsigned int *seqid,
|
|
unsigned int *token_is);
|
|
|
|
static void srp_addr_copy (struct srp_addr *dest, const struct srp_addr *src);
|
|
|
|
static void srp_addr_to_nodeid (
|
|
unsigned int *nodeid_out,
|
|
struct srp_addr *srp_addr_in,
|
|
unsigned int entries);
|
|
|
|
static int srp_addr_equal (const struct srp_addr *a, const struct srp_addr *b);
|
|
|
|
static void memb_leave_message_send (struct totemsrp_instance *instance);
|
|
|
|
static void memb_ring_id_create_or_load (struct totemsrp_instance *, struct memb_ring_id *);
|
|
|
|
static void token_callbacks_execute (struct totemsrp_instance *instance, enum totem_callback_token_type type);
|
|
static void memb_state_gather_enter (struct totemsrp_instance *instance, int gather_from);
|
|
static void messages_deliver_to_app (struct totemsrp_instance *instance, int skip, unsigned int end_point);
|
|
static int orf_token_mcast (struct totemsrp_instance *instance, struct orf_token *oken,
|
|
int fcc_mcasts_allowed);
|
|
static void messages_free (struct totemsrp_instance *instance, unsigned int token_aru);
|
|
|
|
static void memb_ring_id_set_and_store (struct totemsrp_instance *instance,
|
|
const struct memb_ring_id *ring_id);
|
|
static void target_set_completed (void *context);
|
|
static void memb_state_commit_token_update (struct totemsrp_instance *instance);
|
|
static void memb_state_commit_token_target_set (struct totemsrp_instance *instance);
|
|
static int memb_state_commit_token_send (struct totemsrp_instance *instance);
|
|
static int memb_state_commit_token_send_recovery (struct totemsrp_instance *instance, struct memb_commit_token *memb_commit_token);
|
|
static void memb_state_commit_token_create (struct totemsrp_instance *instance);
|
|
static int token_hold_cancel_send (struct totemsrp_instance *instance);
|
|
static void orf_token_endian_convert (const struct orf_token *in, struct orf_token *out);
|
|
static void memb_commit_token_endian_convert (const struct memb_commit_token *in, struct memb_commit_token *out);
|
|
static void memb_join_endian_convert (const struct memb_join *in, struct memb_join *out);
|
|
static void mcast_endian_convert (const struct mcast *in, struct mcast *out);
|
|
static void memb_merge_detect_endian_convert (
|
|
const struct memb_merge_detect *in,
|
|
struct memb_merge_detect *out);
|
|
static void srp_addr_copy_endian_convert (struct srp_addr *out, const struct srp_addr *in);
|
|
static void timer_function_orf_token_timeout (void *data);
|
|
static void timer_function_pause_timeout (void *data);
|
|
static void timer_function_heartbeat_timeout (void *data);
|
|
static void timer_function_token_retransmit_timeout (void *data);
|
|
static void timer_function_token_hold_retransmit_timeout (void *data);
|
|
static void timer_function_merge_detect_timeout (void *data);
|
|
static void *totemsrp_buffer_alloc (struct totemsrp_instance *instance);
|
|
static void totemsrp_buffer_release (struct totemsrp_instance *instance, void *ptr);
|
|
|
|
void main_deliver_fn (
|
|
void *context,
|
|
const void *msg,
|
|
unsigned int msg_len);
|
|
|
|
void main_iface_change_fn (
|
|
void *context,
|
|
const struct totem_ip_address *iface_address,
|
|
unsigned int iface_no);
|
|
|
|
struct message_handlers totemsrp_message_handlers = {
|
|
6,
|
|
{
|
|
message_handler_orf_token,
|
|
message_handler_mcast,
|
|
message_handler_memb_merge_detect,
|
|
message_handler_memb_join,
|
|
message_handler_memb_commit_token,
|
|
message_handler_token_hold_cancel
|
|
}
|
|
};
|
|
|
|
static const char *rundir = NULL;
|
|
|
|
#define log_printf(level, format, args...) \
|
|
do { \
|
|
instance->totemsrp_log_printf ( \
|
|
LOGSYS_ENCODE_RECID(level, \
|
|
instance->totemsrp_subsys_id, \
|
|
LOGSYS_RECID_LOG), \
|
|
__FUNCTION__, __FILE__, __LINE__, \
|
|
format, ##args); \
|
|
} while (0);
|
|
|
|
static void totemsrp_instance_initialize (struct totemsrp_instance *instance)
|
|
{
|
|
memset (instance, 0, sizeof (struct totemsrp_instance));
|
|
|
|
list_init (&instance->token_callback_received_listhead);
|
|
|
|
list_init (&instance->token_callback_sent_listhead);
|
|
|
|
instance->my_received_flg = 1;
|
|
|
|
instance->my_token_seq = SEQNO_START_TOKEN - 1;
|
|
|
|
instance->memb_state = MEMB_STATE_OPERATIONAL;
|
|
|
|
instance->set_aru = -1;
|
|
|
|
instance->my_aru = SEQNO_START_MSG;
|
|
|
|
instance->my_high_seq_received = SEQNO_START_MSG;
|
|
|
|
instance->my_high_delivered = SEQNO_START_MSG;
|
|
|
|
instance->commit_token = (struct memb_commit_token *)instance->commit_token_storage;
|
|
}
|
|
|
|
static void main_token_seqid_get (
|
|
const void *msg,
|
|
unsigned int *seqid,
|
|
unsigned int *token_is)
|
|
{
|
|
const struct orf_token *token = msg;
|
|
|
|
*seqid = 0;
|
|
*token_is = 0;
|
|
if (token->header.type == MESSAGE_TYPE_ORF_TOKEN) {
|
|
*seqid = token->token_seq;
|
|
*token_is = 1;
|
|
}
|
|
}
|
|
|
|
static unsigned int main_msgs_missing (void)
|
|
{
|
|
// TODO
|
|
return (0);
|
|
}
|
|
|
|
static int pause_flush (struct totemsrp_instance *instance)
|
|
{
|
|
uint64_t now_msec;
|
|
uint64_t timestamp_msec;
|
|
int res = 0;
|
|
|
|
now_msec = (timerlist_nano_current_get () / TIMERLIST_NS_IN_MSEC);
|
|
timestamp_msec = instance->pause_timestamp / TIMERLIST_NS_IN_MSEC;
|
|
|
|
if ((now_msec - timestamp_msec) > (instance->totem_config->token_timeout / 2)) {
|
|
log_printf (instance->totemsrp_log_level_notice,
|
|
"Process pause detected for %d ms, flushing membership messages.\n", (unsigned int)(now_msec - timestamp_msec));
|
|
/*
|
|
* -1 indicates an error from recvmsg
|
|
*/
|
|
do {
|
|
res = totemrrp_mcast_recv_empty (instance->totemrrp_context);
|
|
} while (res == -1);
|
|
}
|
|
return (res);
|
|
}
|
|
|
|
static int token_event_stats_collector (enum totem_callback_token_type type, const void *void_instance)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)void_instance;
|
|
uint32_t time_now;
|
|
unsigned long long nano_secs = timerlist_nano_current_get ();
|
|
|
|
time_now = (nano_secs / TIMERLIST_NS_IN_MSEC);
|
|
|
|
if (type == TOTEM_CALLBACK_TOKEN_RECEIVED) {
|
|
/* incr latest token the index */
|
|
if (instance->stats.latest_token == (TOTEM_TOKEN_STATS_MAX - 1))
|
|
instance->stats.latest_token = 0;
|
|
else
|
|
instance->stats.latest_token++;
|
|
|
|
if (instance->stats.earliest_token == instance->stats.latest_token) {
|
|
/* we have filled up the array, start overwriting */
|
|
if (instance->stats.earliest_token == (TOTEM_TOKEN_STATS_MAX - 1))
|
|
instance->stats.earliest_token = 0;
|
|
else
|
|
instance->stats.earliest_token++;
|
|
|
|
instance->stats.token[instance->stats.earliest_token].rx = 0;
|
|
instance->stats.token[instance->stats.earliest_token].tx = 0;
|
|
instance->stats.token[instance->stats.earliest_token].backlog_calc = 0;
|
|
}
|
|
|
|
instance->stats.token[instance->stats.latest_token].rx = time_now;
|
|
instance->stats.token[instance->stats.latest_token].tx = 0; /* in case we drop the token */
|
|
} else {
|
|
instance->stats.token[instance->stats.latest_token].tx = time_now;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Exported interfaces
|
|
*/
|
|
int totemsrp_initialize (
|
|
hdb_handle_t poll_handle,
|
|
void **srp_context,
|
|
struct totem_config *totem_config,
|
|
totemmrp_stats_t *stats,
|
|
|
|
void (*deliver_fn) (
|
|
unsigned int nodeid,
|
|
const void *msg,
|
|
unsigned int msg_len,
|
|
int endian_conversion_required),
|
|
|
|
void (*confchg_fn) (
|
|
enum totem_configuration_type configuration_type,
|
|
const unsigned int *member_list, size_t member_list_entries,
|
|
const unsigned int *left_list, size_t left_list_entries,
|
|
const unsigned int *joined_list, size_t joined_list_entries,
|
|
const struct memb_ring_id *ring_id))
|
|
{
|
|
struct totemsrp_instance *instance;
|
|
unsigned int res;
|
|
|
|
instance = malloc (sizeof (struct totemsrp_instance));
|
|
if (instance == NULL) {
|
|
goto error_exit;
|
|
}
|
|
|
|
rundir = getenv ("COROSYNC_RUN_DIR");
|
|
if (rundir == NULL) {
|
|
rundir = LOCALSTATEDIR "/lib/corosync";
|
|
}
|
|
|
|
res = mkdir (rundir, 0700);
|
|
if (res == -1 && errno != EEXIST) {
|
|
goto error_destroy;
|
|
}
|
|
|
|
res = chdir (rundir);
|
|
if (res == -1) {
|
|
goto error_destroy;
|
|
}
|
|
|
|
totemsrp_instance_initialize (instance);
|
|
|
|
stats->srp = &instance->stats;
|
|
instance->stats.latest_token = 0;
|
|
instance->stats.earliest_token = 0;
|
|
|
|
instance->totem_config = totem_config;
|
|
|
|
/*
|
|
* Configure logging
|
|
*/
|
|
instance->totemsrp_log_level_security = totem_config->totem_logging_configuration.log_level_security;
|
|
instance->totemsrp_log_level_error = totem_config->totem_logging_configuration.log_level_error;
|
|
instance->totemsrp_log_level_warning = totem_config->totem_logging_configuration.log_level_warning;
|
|
instance->totemsrp_log_level_notice = totem_config->totem_logging_configuration.log_level_notice;
|
|
instance->totemsrp_log_level_debug = totem_config->totem_logging_configuration.log_level_debug;
|
|
instance->totemsrp_subsys_id = totem_config->totem_logging_configuration.log_subsys_id;
|
|
instance->totemsrp_log_printf = totem_config->totem_logging_configuration.log_printf;
|
|
|
|
/*
|
|
* Initialize local variables for totemsrp
|
|
*/
|
|
totemip_copy (&instance->mcast_address, &totem_config->interfaces[0].mcast_addr);
|
|
|
|
/*
|
|
* Display totem configuration
|
|
*/
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Token Timeout (%d ms) retransmit timeout (%d ms)\n",
|
|
totem_config->token_timeout, totem_config->token_retransmit_timeout);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"token hold (%d ms) retransmits before loss (%d retrans)\n",
|
|
totem_config->token_hold_timeout, totem_config->token_retransmits_before_loss_const);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"join (%d ms) send_join (%d ms) consensus (%d ms) merge (%d ms)\n",
|
|
totem_config->join_timeout,
|
|
totem_config->send_join_timeout,
|
|
totem_config->consensus_timeout,
|
|
|
|
totem_config->merge_timeout);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"downcheck (%d ms) fail to recv const (%d msgs)\n",
|
|
totem_config->downcheck_timeout, totem_config->fail_to_recv_const);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"seqno unchanged const (%d rotations) Maximum network MTU %d\n", totem_config->seqno_unchanged_const, totem_config->net_mtu);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"window size per rotation (%d messages) maximum messages per rotation (%d messages)\n",
|
|
totem_config->window_size, totem_config->max_messages);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"missed count const (%d messages)\n",
|
|
totem_config->miss_count_const);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"send threads (%d threads)\n", totem_config->threads);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"RRP token expired timeout (%d ms)\n",
|
|
totem_config->rrp_token_expired_timeout);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"RRP token problem counter (%d ms)\n",
|
|
totem_config->rrp_problem_count_timeout);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"RRP threshold (%d problem count)\n",
|
|
totem_config->rrp_problem_count_threshold);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"RRP mode set to %s.\n", instance->totem_config->rrp_mode);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"heartbeat_failures_allowed (%d)\n", totem_config->heartbeat_failures_allowed);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"max_network_delay (%d ms)\n", totem_config->max_network_delay);
|
|
|
|
|
|
cs_queue_init (&instance->retrans_message_queue, RETRANS_MESSAGE_QUEUE_SIZE_MAX,
|
|
sizeof (struct message_item));
|
|
|
|
sq_init (&instance->regular_sort_queue,
|
|
QUEUE_RTR_ITEMS_SIZE_MAX, sizeof (struct sort_queue_item), 0);
|
|
|
|
sq_init (&instance->recovery_sort_queue,
|
|
QUEUE_RTR_ITEMS_SIZE_MAX, sizeof (struct sort_queue_item), 0);
|
|
|
|
instance->totemsrp_poll_handle = poll_handle;
|
|
|
|
instance->totemsrp_deliver_fn = deliver_fn;
|
|
|
|
instance->totemsrp_confchg_fn = confchg_fn;
|
|
instance->use_heartbeat = 1;
|
|
|
|
timer_function_pause_timeout (instance);
|
|
|
|
if ( totem_config->heartbeat_failures_allowed == 0 ) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"HeartBeat is Disabled. To enable set heartbeat_failures_allowed > 0\n");
|
|
instance->use_heartbeat = 0;
|
|
}
|
|
|
|
if (instance->use_heartbeat) {
|
|
instance->heartbeat_timeout
|
|
= (totem_config->heartbeat_failures_allowed) * totem_config->token_retransmit_timeout
|
|
+ totem_config->max_network_delay;
|
|
|
|
if (instance->heartbeat_timeout >= totem_config->token_timeout) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"total heartbeat_timeout (%d ms) is not less than token timeout (%d ms)\n",
|
|
instance->heartbeat_timeout,
|
|
totem_config->token_timeout);
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"heartbeat_timeout = heartbeat_failures_allowed * token_retransmit_timeout + max_network_delay\n");
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"heartbeat timeout should be less than the token timeout. HeartBeat is Diabled !!\n");
|
|
instance->use_heartbeat = 0;
|
|
}
|
|
else {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"total heartbeat_timeout (%d ms)\n", instance->heartbeat_timeout);
|
|
}
|
|
}
|
|
|
|
totemrrp_initialize (
|
|
poll_handle,
|
|
&instance->totemrrp_context,
|
|
totem_config,
|
|
instance,
|
|
main_deliver_fn,
|
|
main_iface_change_fn,
|
|
main_token_seqid_get,
|
|
main_msgs_missing,
|
|
target_set_completed);
|
|
|
|
/*
|
|
* Must have net_mtu adjusted by totemrrp_initialize first
|
|
*/
|
|
cs_queue_init (&instance->new_message_queue,
|
|
MESSAGE_QUEUE_MAX,
|
|
sizeof (struct message_item));
|
|
|
|
totemsrp_callback_token_create (instance,
|
|
&instance->token_recv_event_handle,
|
|
TOTEM_CALLBACK_TOKEN_RECEIVED,
|
|
0,
|
|
token_event_stats_collector,
|
|
instance);
|
|
totemsrp_callback_token_create (instance,
|
|
&instance->token_sent_event_handle,
|
|
TOTEM_CALLBACK_TOKEN_SENT,
|
|
0,
|
|
token_event_stats_collector,
|
|
instance);
|
|
*srp_context = instance;
|
|
return (0);
|
|
|
|
error_destroy:
|
|
free (instance);
|
|
|
|
error_exit:
|
|
return (-1);
|
|
}
|
|
|
|
void totemsrp_finalize (
|
|
void *srp_context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
|
|
memb_leave_message_send (instance);
|
|
free (srp_context);
|
|
}
|
|
|
|
int totemsrp_ifaces_get (
|
|
void *srp_context,
|
|
unsigned int nodeid,
|
|
struct totem_ip_address *interfaces,
|
|
char ***status,
|
|
unsigned int *iface_count)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
int res = 0;
|
|
unsigned int found = 0;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < instance->my_memb_entries; i++) {
|
|
if (instance->my_memb_list[i].addr[0].nodeid == nodeid) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found) {
|
|
memcpy (interfaces, &instance->my_memb_list[i],
|
|
sizeof (struct srp_addr));
|
|
*iface_count = instance->totem_config->interface_count;
|
|
goto finish;
|
|
}
|
|
|
|
for (i = 0; i < instance->my_left_memb_entries; i++) {
|
|
if (instance->my_left_memb_list[i].addr[0].nodeid == nodeid) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found) {
|
|
memcpy (interfaces, &instance->my_left_memb_list[i],
|
|
sizeof (struct srp_addr));
|
|
*iface_count = instance->totem_config->interface_count;
|
|
} else {
|
|
res = -1;
|
|
}
|
|
|
|
finish:
|
|
totemrrp_ifaces_get (instance->totemrrp_context, status, NULL);
|
|
return (res);
|
|
}
|
|
|
|
int totemsrp_crypto_set (
|
|
void *srp_context,
|
|
unsigned int type)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
int res;
|
|
|
|
res = totemrrp_crypto_set(instance->totemrrp_context, type);
|
|
|
|
return (res);
|
|
}
|
|
|
|
|
|
unsigned int totemsrp_my_nodeid_get (
|
|
void *srp_context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
unsigned int res;
|
|
|
|
res = instance->totem_config->interfaces[0].boundto.nodeid;
|
|
|
|
return (res);
|
|
}
|
|
|
|
int totemsrp_my_family_get (
|
|
void *srp_context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
int res;
|
|
|
|
res = instance->totem_config->interfaces[0].boundto.family;
|
|
|
|
return (res);
|
|
}
|
|
|
|
|
|
int totemsrp_ring_reenable (
|
|
void *srp_context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
|
|
totemrrp_ring_reenable (instance->totemrrp_context);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Set operations for use by the membership algorithm
|
|
*/
|
|
static int srp_addr_equal (const struct srp_addr *a, const struct srp_addr *b)
|
|
{
|
|
unsigned int i;
|
|
unsigned int res;
|
|
|
|
for (i = 0; i < 1; i++) {
|
|
res = totemip_equal (&a->addr[i], &b->addr[i]);
|
|
if (res == 0) {
|
|
return (0);
|
|
}
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static void srp_addr_copy (struct srp_addr *dest, const struct srp_addr *src)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < INTERFACE_MAX; i++) {
|
|
totemip_copy (&dest->addr[i], &src->addr[i]);
|
|
}
|
|
}
|
|
|
|
static void srp_addr_to_nodeid (
|
|
unsigned int *nodeid_out,
|
|
struct srp_addr *srp_addr_in,
|
|
unsigned int entries)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < entries; i++) {
|
|
nodeid_out[i] = srp_addr_in[i].addr[0].nodeid;
|
|
}
|
|
}
|
|
|
|
static void srp_addr_copy_endian_convert (struct srp_addr *out, const struct srp_addr *in)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < INTERFACE_MAX; i++) {
|
|
totemip_copy_endian_convert (&out->addr[i], &in->addr[i]);
|
|
}
|
|
}
|
|
|
|
static void memb_consensus_reset (struct totemsrp_instance *instance)
|
|
{
|
|
instance->consensus_list_entries = 0;
|
|
}
|
|
|
|
static void memb_set_subtract (
|
|
struct srp_addr *out_list, int *out_list_entries,
|
|
struct srp_addr *one_list, int one_list_entries,
|
|
struct srp_addr *two_list, int two_list_entries)
|
|
{
|
|
int found = 0;
|
|
int i;
|
|
int j;
|
|
|
|
*out_list_entries = 0;
|
|
|
|
for (i = 0; i < one_list_entries; i++) {
|
|
for (j = 0; j < two_list_entries; j++) {
|
|
if (srp_addr_equal (&one_list[i], &two_list[j])) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found == 0) {
|
|
srp_addr_copy (&out_list[*out_list_entries], &one_list[i]);
|
|
*out_list_entries = *out_list_entries + 1;
|
|
}
|
|
found = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set consensus for a specific processor
|
|
*/
|
|
static void memb_consensus_set (
|
|
struct totemsrp_instance *instance,
|
|
const struct srp_addr *addr)
|
|
{
|
|
int found = 0;
|
|
int i;
|
|
|
|
if (addr->addr[0].nodeid == LEAVE_DUMMY_NODEID)
|
|
return;
|
|
|
|
for (i = 0; i < instance->consensus_list_entries; i++) {
|
|
if (srp_addr_equal(addr, &instance->consensus_list[i].addr)) {
|
|
found = 1;
|
|
break; /* found entry */
|
|
}
|
|
}
|
|
srp_addr_copy (&instance->consensus_list[i].addr, addr);
|
|
instance->consensus_list[i].set = 1;
|
|
if (found == 0) {
|
|
instance->consensus_list_entries++;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Is consensus set for a specific processor
|
|
*/
|
|
static int memb_consensus_isset (
|
|
struct totemsrp_instance *instance,
|
|
const struct srp_addr *addr)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < instance->consensus_list_entries; i++) {
|
|
if (srp_addr_equal (addr, &instance->consensus_list[i].addr)) {
|
|
return (instance->consensus_list[i].set);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Is consensus agreed upon based upon consensus database
|
|
*/
|
|
static int memb_consensus_agreed (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr token_memb[PROCESSOR_COUNT_MAX];
|
|
int token_memb_entries = 0;
|
|
int agreed = 1;
|
|
int i;
|
|
|
|
memb_set_subtract (token_memb, &token_memb_entries,
|
|
instance->my_proc_list, instance->my_proc_list_entries,
|
|
instance->my_failed_list, instance->my_failed_list_entries);
|
|
|
|
for (i = 0; i < token_memb_entries; i++) {
|
|
if (memb_consensus_isset (instance, &token_memb[i]) == 0) {
|
|
agreed = 0;
|
|
break;
|
|
}
|
|
}
|
|
assert (token_memb_entries >= 1);
|
|
|
|
return (agreed);
|
|
}
|
|
|
|
static void memb_consensus_notset (
|
|
struct totemsrp_instance *instance,
|
|
struct srp_addr *no_consensus_list,
|
|
int *no_consensus_list_entries,
|
|
struct srp_addr *comparison_list,
|
|
int comparison_list_entries)
|
|
{
|
|
int i;
|
|
|
|
*no_consensus_list_entries = 0;
|
|
|
|
for (i = 0; i < instance->my_proc_list_entries; i++) {
|
|
if (memb_consensus_isset (instance, &instance->my_proc_list[i]) == 0) {
|
|
srp_addr_copy (&no_consensus_list[*no_consensus_list_entries], &instance->my_proc_list[i]);
|
|
*no_consensus_list_entries = *no_consensus_list_entries + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Is set1 equal to set2 Entries can be in different orders
|
|
*/
|
|
static int memb_set_equal (
|
|
struct srp_addr *set1, int set1_entries,
|
|
struct srp_addr *set2, int set2_entries)
|
|
{
|
|
int i;
|
|
int j;
|
|
|
|
int found = 0;
|
|
|
|
if (set1_entries != set2_entries) {
|
|
return (0);
|
|
}
|
|
for (i = 0; i < set2_entries; i++) {
|
|
for (j = 0; j < set1_entries; j++) {
|
|
if (srp_addr_equal (&set1[j], &set2[i])) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found == 0) {
|
|
return (0);
|
|
}
|
|
found = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Is subset fully contained in fullset
|
|
*/
|
|
static int memb_set_subset (
|
|
const struct srp_addr *subset, int subset_entries,
|
|
const struct srp_addr *fullset, int fullset_entries)
|
|
{
|
|
int i;
|
|
int j;
|
|
int found = 0;
|
|
|
|
if (subset_entries > fullset_entries) {
|
|
return (0);
|
|
}
|
|
for (i = 0; i < subset_entries; i++) {
|
|
for (j = 0; j < fullset_entries; j++) {
|
|
if (srp_addr_equal (&subset[i], &fullset[j])) {
|
|
found = 1;
|
|
}
|
|
}
|
|
if (found == 0) {
|
|
return (0);
|
|
}
|
|
found = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
/*
|
|
* merge subset into fullset taking care not to add duplicates
|
|
*/
|
|
static void memb_set_merge (
|
|
const struct srp_addr *subset, int subset_entries,
|
|
struct srp_addr *fullset, int *fullset_entries)
|
|
{
|
|
int found = 0;
|
|
int i;
|
|
int j;
|
|
|
|
for (i = 0; i < subset_entries; i++) {
|
|
for (j = 0; j < *fullset_entries; j++) {
|
|
if (srp_addr_equal (&fullset[j], &subset[i])) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found == 0) {
|
|
srp_addr_copy (&fullset[*fullset_entries], &subset[i]);
|
|
*fullset_entries = *fullset_entries + 1;
|
|
}
|
|
found = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void memb_set_and_with_ring_id (
|
|
struct srp_addr *set1,
|
|
struct memb_ring_id *set1_ring_ids,
|
|
int set1_entries,
|
|
struct srp_addr *set2,
|
|
int set2_entries,
|
|
struct memb_ring_id *old_ring_id,
|
|
struct srp_addr *and,
|
|
int *and_entries)
|
|
{
|
|
int i;
|
|
int j;
|
|
int found = 0;
|
|
|
|
*and_entries = 0;
|
|
|
|
for (i = 0; i < set2_entries; i++) {
|
|
for (j = 0; j < set1_entries; j++) {
|
|
if (srp_addr_equal (&set1[j], &set2[i])) {
|
|
if (memcmp (&set1_ring_ids[j], old_ring_id, sizeof (struct memb_ring_id)) == 0) {
|
|
found = 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
srp_addr_copy (&and[*and_entries], &set1[j]);
|
|
*and_entries = *and_entries + 1;
|
|
}
|
|
found = 0;
|
|
}
|
|
return;
|
|
}
|
|
|
|
#ifdef CODE_COVERAGE
|
|
static void memb_set_print (
|
|
char *string,
|
|
struct srp_addr *list,
|
|
int list_entries)
|
|
{
|
|
int i;
|
|
int j;
|
|
printf ("List '%s' contains %d entries:\n", string, list_entries);
|
|
|
|
for (i = 0; i < list_entries; i++) {
|
|
for (j = 0; j < INTERFACE_MAX; j++) {
|
|
printf ("Address %d\n", i);
|
|
printf ("\tiface %d %s\n", j, totemip_print (&list[i].addr[j]));
|
|
printf ("family %d\n", list[i].addr[j].family);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void *totemsrp_buffer_alloc (struct totemsrp_instance *instance)
|
|
{
|
|
assert (instance != NULL);
|
|
return totemrrp_buffer_alloc (instance->totemrrp_context);
|
|
}
|
|
|
|
static void totemsrp_buffer_release (struct totemsrp_instance *instance, void *ptr)
|
|
{
|
|
assert (instance != NULL);
|
|
totemrrp_buffer_release (instance->totemrrp_context, ptr);
|
|
}
|
|
|
|
static void reset_token_retransmit_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_delete (instance->totemsrp_poll_handle,
|
|
instance->timer_orf_token_retransmit_timeout);
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->token_retransmit_timeout,
|
|
(void *)instance,
|
|
timer_function_token_retransmit_timeout,
|
|
&instance->timer_orf_token_retransmit_timeout);
|
|
|
|
}
|
|
|
|
static void start_merge_detect_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
if (instance->my_merge_detect_timeout_outstanding == 0) {
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->merge_timeout,
|
|
(void *)instance,
|
|
timer_function_merge_detect_timeout,
|
|
&instance->timer_merge_detect_timeout);
|
|
|
|
instance->my_merge_detect_timeout_outstanding = 1;
|
|
}
|
|
}
|
|
|
|
static void cancel_merge_detect_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_merge_detect_timeout);
|
|
instance->my_merge_detect_timeout_outstanding = 0;
|
|
}
|
|
|
|
/*
|
|
* ring_state_* is used to save and restore the sort queue
|
|
* state when a recovery operation fails (and enters gather)
|
|
*/
|
|
static void old_ring_state_save (struct totemsrp_instance *instance)
|
|
{
|
|
memcpy (&instance->my_old_ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
instance->old_ring_state_aru = instance->my_aru;
|
|
instance->old_ring_state_high_seq_received = instance->my_high_seq_received;
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Saving state aru %x high seq received %x\n",
|
|
instance->my_aru, instance->my_high_seq_received);
|
|
}
|
|
|
|
static void old_ring_state_restore (struct totemsrp_instance *instance)
|
|
{
|
|
instance->my_aru = instance->old_ring_state_aru;
|
|
instance->my_high_seq_received = instance->old_ring_state_high_seq_received;
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Restoring instance->my_aru %x my high seq received %x\n",
|
|
instance->my_aru, instance->my_high_seq_received);
|
|
}
|
|
|
|
static void old_ring_state_reset (struct totemsrp_instance *instance)
|
|
{
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Resetting old ring state\n");
|
|
}
|
|
|
|
static void reset_pause_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_pause_timeout);
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->token_timeout / 5,
|
|
(void *)instance,
|
|
timer_function_pause_timeout,
|
|
&instance->timer_pause_timeout);
|
|
}
|
|
|
|
static void reset_token_timeout (struct totemsrp_instance *instance) {
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_orf_token_timeout);
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->token_timeout,
|
|
(void *)instance,
|
|
timer_function_orf_token_timeout,
|
|
&instance->timer_orf_token_timeout);
|
|
}
|
|
|
|
static void reset_heartbeat_timeout (struct totemsrp_instance *instance) {
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_heartbeat_timeout);
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->heartbeat_timeout,
|
|
(void *)instance,
|
|
timer_function_heartbeat_timeout,
|
|
&instance->timer_heartbeat_timeout);
|
|
}
|
|
|
|
|
|
static void cancel_token_timeout (struct totemsrp_instance *instance) {
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_orf_token_timeout);
|
|
}
|
|
|
|
static void cancel_heartbeat_timeout (struct totemsrp_instance *instance) {
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_heartbeat_timeout);
|
|
}
|
|
|
|
static void cancel_token_retransmit_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->timer_orf_token_retransmit_timeout);
|
|
}
|
|
|
|
static void start_token_hold_retransmit_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->token_hold_timeout,
|
|
(void *)instance,
|
|
timer_function_token_hold_retransmit_timeout,
|
|
&instance->timer_orf_token_hold_retransmit_timeout);
|
|
}
|
|
|
|
static void cancel_token_hold_retransmit_timeout (struct totemsrp_instance *instance)
|
|
{
|
|
poll_timer_delete (instance->totemsrp_poll_handle,
|
|
instance->timer_orf_token_hold_retransmit_timeout);
|
|
}
|
|
|
|
static void memb_state_consensus_timeout_expired (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr no_consensus_list[PROCESSOR_COUNT_MAX];
|
|
int no_consensus_list_entries;
|
|
|
|
instance->stats.consensus_timeouts++;
|
|
if (memb_consensus_agreed (instance)) {
|
|
memb_consensus_reset (instance);
|
|
|
|
memb_consensus_set (instance, &instance->my_id);
|
|
|
|
reset_token_timeout (instance); // REVIEWED
|
|
} else {
|
|
memb_consensus_notset (
|
|
instance,
|
|
no_consensus_list,
|
|
&no_consensus_list_entries,
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries);
|
|
|
|
memb_set_merge (no_consensus_list, no_consensus_list_entries,
|
|
instance->my_failed_list, &instance->my_failed_list_entries);
|
|
memb_state_gather_enter (instance, 0);
|
|
}
|
|
}
|
|
|
|
static void memb_join_message_send (struct totemsrp_instance *instance);
|
|
|
|
static void memb_merge_detect_transmit (struct totemsrp_instance *instance);
|
|
|
|
/*
|
|
* Timers used for various states of the membership algorithm
|
|
*/
|
|
static void timer_function_pause_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
instance->pause_timestamp = timerlist_nano_current_get ();
|
|
reset_pause_timeout (instance);
|
|
}
|
|
|
|
static void memb_recovery_state_token_loss (struct totemsrp_instance *instance)
|
|
{
|
|
old_ring_state_restore (instance);
|
|
memb_state_gather_enter (instance, 5);
|
|
instance->stats.recovery_token_lost++;
|
|
}
|
|
|
|
static void timer_function_orf_token_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"The token was lost in the OPERATIONAL state.\n");
|
|
log_printf (instance->totemsrp_log_level_notice,
|
|
"A processor failed, forming new configuration.\n");
|
|
totemrrp_iface_check (instance->totemrrp_context);
|
|
memb_state_gather_enter (instance, 2);
|
|
instance->stats.operational_token_lost++;
|
|
break;
|
|
|
|
case MEMB_STATE_GATHER:
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"The consensus timeout expired.\n");
|
|
memb_state_consensus_timeout_expired (instance);
|
|
memb_state_gather_enter (instance, 3);
|
|
instance->stats.gather_token_lost++;
|
|
break;
|
|
|
|
case MEMB_STATE_COMMIT:
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"The token was lost in the COMMIT state.\n");
|
|
memb_state_gather_enter (instance, 4);
|
|
instance->stats.commit_token_lost++;
|
|
break;
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"The token was lost in the RECOVERY state.\n");
|
|
memb_recovery_state_token_loss (instance);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void timer_function_heartbeat_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"HeartBeat Timer expired Invoking token loss mechanism in state %d \n", instance->memb_state);
|
|
timer_function_orf_token_timeout(data);
|
|
}
|
|
|
|
static void memb_timer_function_state_gather (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
case MEMB_STATE_RECOVERY:
|
|
assert (0); /* this should never happen */
|
|
break;
|
|
case MEMB_STATE_GATHER:
|
|
case MEMB_STATE_COMMIT:
|
|
memb_join_message_send (instance);
|
|
|
|
/*
|
|
* Restart the join timeout
|
|
`*/
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout);
|
|
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->join_timeout,
|
|
(void *)instance,
|
|
memb_timer_function_state_gather,
|
|
&instance->memb_timer_state_gather_join_timeout);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void memb_timer_function_gather_consensus_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
memb_state_consensus_timeout_expired (instance);
|
|
}
|
|
|
|
static void deliver_messages_from_recovery_to_regular (struct totemsrp_instance *instance)
|
|
{
|
|
unsigned int i;
|
|
struct sort_queue_item *recovery_message_item;
|
|
struct sort_queue_item regular_message_item;
|
|
unsigned int range = 0;
|
|
int res;
|
|
void *ptr;
|
|
struct mcast *mcast;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"recovery to regular %x-%x\n", SEQNO_START_MSG + 1, instance->my_aru);
|
|
|
|
range = instance->my_aru - SEQNO_START_MSG;
|
|
/*
|
|
* Move messages from recovery to regular sort queue
|
|
*/
|
|
// todo should i be initialized to 0 or 1 ?
|
|
for (i = 1; i <= range; i++) {
|
|
res = sq_item_get (&instance->recovery_sort_queue,
|
|
i + SEQNO_START_MSG, &ptr);
|
|
if (res != 0) {
|
|
continue;
|
|
}
|
|
recovery_message_item = ptr;
|
|
|
|
/*
|
|
* Convert recovery message into regular message
|
|
*/
|
|
mcast = recovery_message_item->mcast;
|
|
if (mcast->header.encapsulated == MESSAGE_ENCAPSULATED) {
|
|
/*
|
|
* Message is a recovery message encapsulated
|
|
* in a new ring message
|
|
*/
|
|
regular_message_item.mcast =
|
|
(struct mcast *)(((char *)recovery_message_item->mcast) + sizeof (struct mcast));
|
|
regular_message_item.msg_len =
|
|
recovery_message_item->msg_len - sizeof (struct mcast);
|
|
mcast = regular_message_item.mcast;
|
|
} else {
|
|
/*
|
|
* TODO this case shouldn't happen
|
|
*/
|
|
continue;
|
|
}
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"comparing if ring id is for this processors old ring seqno %d\n",
|
|
mcast->seq);
|
|
|
|
/*
|
|
* Only add this message to the regular sort
|
|
* queue if it was originated with the same ring
|
|
* id as the previous ring
|
|
*/
|
|
if (memcmp (&instance->my_old_ring_id, &mcast->ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
res = sq_item_inuse (&instance->regular_sort_queue, mcast->seq);
|
|
if (res == 0) {
|
|
sq_item_add (&instance->regular_sort_queue,
|
|
®ular_message_item, mcast->seq);
|
|
if (sq_lt_compare (instance->old_ring_state_high_seq_received, mcast->seq)) {
|
|
instance->old_ring_state_high_seq_received = mcast->seq;
|
|
}
|
|
}
|
|
} else {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"-not adding msg with seq no %x\n", mcast->seq);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Change states in the state machine of the membership algorithm
|
|
*/
|
|
static void memb_state_operational_enter (struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr joined_list[PROCESSOR_COUNT_MAX];
|
|
int joined_list_entries = 0;
|
|
unsigned int aru_save;
|
|
unsigned int joined_list_totemip[PROCESSOR_COUNT_MAX];
|
|
unsigned int trans_memb_list_totemip[PROCESSOR_COUNT_MAX];
|
|
unsigned int new_memb_list_totemip[PROCESSOR_COUNT_MAX];
|
|
unsigned int left_list[PROCESSOR_COUNT_MAX];
|
|
|
|
memb_consensus_reset (instance);
|
|
|
|
old_ring_state_reset (instance);
|
|
|
|
deliver_messages_from_recovery_to_regular (instance);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Delivering to app %x to %x\n",
|
|
instance->my_high_delivered + 1, instance->old_ring_state_high_seq_received);
|
|
|
|
aru_save = instance->my_aru;
|
|
instance->my_aru = instance->old_ring_state_aru;
|
|
|
|
messages_deliver_to_app (instance, 0, instance->old_ring_state_high_seq_received);
|
|
|
|
/*
|
|
* Calculate joined and left list
|
|
*/
|
|
memb_set_subtract (instance->my_left_memb_list,
|
|
&instance->my_left_memb_entries,
|
|
instance->my_memb_list, instance->my_memb_entries,
|
|
instance->my_trans_memb_list, instance->my_trans_memb_entries);
|
|
|
|
memb_set_subtract (joined_list, &joined_list_entries,
|
|
instance->my_new_memb_list, instance->my_new_memb_entries,
|
|
instance->my_trans_memb_list, instance->my_trans_memb_entries);
|
|
|
|
/*
|
|
* Install new membership
|
|
*/
|
|
instance->my_memb_entries = instance->my_new_memb_entries;
|
|
memcpy (&instance->my_memb_list, instance->my_new_memb_list,
|
|
sizeof (struct srp_addr) * instance->my_memb_entries);
|
|
instance->last_released = 0;
|
|
instance->my_set_retrans_flg = 0;
|
|
|
|
/*
|
|
* Deliver transitional configuration to application
|
|
*/
|
|
srp_addr_to_nodeid (left_list, instance->my_left_memb_list,
|
|
instance->my_left_memb_entries);
|
|
srp_addr_to_nodeid (trans_memb_list_totemip,
|
|
instance->my_trans_memb_list, instance->my_trans_memb_entries);
|
|
instance->totemsrp_confchg_fn (TOTEM_CONFIGURATION_TRANSITIONAL,
|
|
trans_memb_list_totemip, instance->my_trans_memb_entries,
|
|
left_list, instance->my_left_memb_entries,
|
|
0, 0, &instance->my_ring_id);
|
|
|
|
// TODO we need to filter to ensure we only deliver those
|
|
// messages which are part of instance->my_deliver_memb
|
|
messages_deliver_to_app (instance, 1, instance->old_ring_state_high_seq_received);
|
|
|
|
instance->my_aru = aru_save;
|
|
|
|
/*
|
|
* Deliver regular configuration to application
|
|
*/
|
|
srp_addr_to_nodeid (new_memb_list_totemip,
|
|
instance->my_new_memb_list, instance->my_new_memb_entries);
|
|
srp_addr_to_nodeid (joined_list_totemip, joined_list,
|
|
joined_list_entries);
|
|
instance->totemsrp_confchg_fn (TOTEM_CONFIGURATION_REGULAR,
|
|
new_memb_list_totemip, instance->my_new_memb_entries,
|
|
0, 0,
|
|
joined_list_totemip, joined_list_entries, &instance->my_ring_id);
|
|
|
|
/*
|
|
* The recovery sort queue now becomes the regular
|
|
* sort queue. It is necessary to copy the state
|
|
* into the regular sort queue.
|
|
*/
|
|
sq_copy (&instance->regular_sort_queue, &instance->recovery_sort_queue);
|
|
instance->my_last_aru = SEQNO_START_MSG;
|
|
sq_items_release (&instance->regular_sort_queue, SEQNO_START_MSG - 1);
|
|
|
|
/* When making my_proc_list smaller, ensure that the
|
|
* now non-used entries are zero-ed out. There are some suspect
|
|
* assert's that assume that there is always 2 entries in the list.
|
|
* These fail when my_proc_list is reduced to 1 entry (and the
|
|
* valid [0] entry is the same as the 'unused' [1] entry).
|
|
*/
|
|
memset(instance->my_proc_list, 0,
|
|
sizeof (struct srp_addr) * instance->my_proc_list_entries);
|
|
|
|
instance->my_proc_list_entries = instance->my_new_memb_entries;
|
|
memcpy (instance->my_proc_list, instance->my_new_memb_list,
|
|
sizeof (struct srp_addr) * instance->my_memb_entries);
|
|
|
|
instance->my_failed_list_entries = 0;
|
|
instance->my_high_delivered = instance->my_aru;
|
|
// TODO the recovery messages are leaked
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"entering OPERATIONAL state.\n");
|
|
log_printf (instance->totemsrp_log_level_notice,
|
|
"A processor joined or left the membership and a new membership was formed.\n");
|
|
instance->memb_state = MEMB_STATE_OPERATIONAL;
|
|
|
|
instance->stats.operational_entered++;
|
|
instance->stats.continuous_gather = 0;
|
|
|
|
instance->my_received_flg = 1;
|
|
|
|
reset_pause_timeout (instance);
|
|
|
|
/*
|
|
* Save ring id information from this configuration to determine
|
|
* which processors are transitioning from old regular configuration
|
|
* in to new regular configuration on the next configuration change
|
|
*/
|
|
memcpy (&instance->my_old_ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
|
|
return;
|
|
}
|
|
|
|
static void memb_state_gather_enter (
|
|
struct totemsrp_instance *instance,
|
|
int gather_from)
|
|
{
|
|
memb_set_merge (
|
|
&instance->my_id, 1,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
|
|
memb_join_message_send (instance);
|
|
|
|
/*
|
|
* Restart the join timeout
|
|
*/
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout);
|
|
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->join_timeout,
|
|
(void *)instance,
|
|
memb_timer_function_state_gather,
|
|
&instance->memb_timer_state_gather_join_timeout);
|
|
|
|
/*
|
|
* Restart the consensus timeout
|
|
*/
|
|
poll_timer_delete (instance->totemsrp_poll_handle,
|
|
instance->memb_timer_state_gather_consensus_timeout);
|
|
|
|
poll_timer_add (instance->totemsrp_poll_handle,
|
|
instance->totem_config->consensus_timeout,
|
|
(void *)instance,
|
|
memb_timer_function_gather_consensus_timeout,
|
|
&instance->memb_timer_state_gather_consensus_timeout);
|
|
|
|
/*
|
|
* Cancel the token loss and token retransmission timeouts
|
|
*/
|
|
cancel_token_retransmit_timeout (instance); // REVIEWED
|
|
cancel_token_timeout (instance); // REVIEWED
|
|
cancel_merge_detect_timeout (instance);
|
|
|
|
memb_consensus_reset (instance);
|
|
|
|
memb_consensus_set (instance, &instance->my_id);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"entering GATHER state from %d.\n", gather_from);
|
|
|
|
instance->memb_state = MEMB_STATE_GATHER;
|
|
instance->stats.gather_entered++;
|
|
instance->stats.continuous_gather++;
|
|
|
|
if (instance->stats.continuous_gather > MAX_NO_CONT_GATHER) {
|
|
log_printf (instance->totemsrp_log_level_warning,
|
|
"Totem is unable to form a cluster because of an "
|
|
"operating system or network fault. The most common "
|
|
"cause of this message is that the local firewall is "
|
|
"configured improperly.\n");
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void timer_function_token_retransmit_timeout (void *data);
|
|
|
|
static void target_set_completed (
|
|
void *context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)context;
|
|
|
|
memb_state_commit_token_send (instance);
|
|
|
|
}
|
|
|
|
static void memb_state_commit_enter (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
old_ring_state_save (instance);
|
|
|
|
memb_state_commit_token_update (instance);
|
|
|
|
memb_state_commit_token_target_set (instance);
|
|
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout);
|
|
|
|
instance->memb_timer_state_gather_join_timeout = 0;
|
|
|
|
poll_timer_delete (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_consensus_timeout);
|
|
|
|
instance->memb_timer_state_gather_consensus_timeout = 0;
|
|
|
|
memb_ring_id_set_and_store (instance, &instance->commit_token->ring_id);
|
|
|
|
instance->token_ring_id_seq = instance->my_ring_id.seq;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"entering COMMIT state.\n");
|
|
|
|
instance->memb_state = MEMB_STATE_COMMIT;
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
reset_token_timeout (instance); // REVIEWED
|
|
|
|
instance->stats.commit_entered++;
|
|
instance->stats.continuous_gather = 0;
|
|
|
|
/*
|
|
* reset all flow control variables since we are starting a new ring
|
|
*/
|
|
instance->my_trc = 0;
|
|
instance->my_pbl = 0;
|
|
instance->my_cbl = 0;
|
|
/*
|
|
* commit token sent after callback that token target has been set
|
|
*/
|
|
}
|
|
|
|
static void memb_state_recovery_enter (
|
|
struct totemsrp_instance *instance,
|
|
struct memb_commit_token *commit_token)
|
|
{
|
|
int i;
|
|
int local_received_flg = 1;
|
|
unsigned int low_ring_aru;
|
|
unsigned int range = 0;
|
|
unsigned int messages_originated = 0;
|
|
const struct srp_addr *addr;
|
|
struct memb_commit_token_memb_entry *memb_list;
|
|
struct memb_ring_id my_new_memb_ring_id_list[PROCESSOR_COUNT_MAX];
|
|
|
|
addr = (const struct srp_addr *)commit_token->end_of_commit_token;
|
|
memb_list = (struct memb_commit_token_memb_entry *)(addr + commit_token->addr_entries);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"entering RECOVERY state.\n");
|
|
|
|
instance->my_high_ring_delivered = 0;
|
|
|
|
sq_reinit (&instance->recovery_sort_queue, SEQNO_START_MSG);
|
|
cs_queue_reinit (&instance->retrans_message_queue);
|
|
|
|
low_ring_aru = instance->old_ring_state_high_seq_received;
|
|
|
|
memb_state_commit_token_send_recovery (instance, commit_token);
|
|
|
|
instance->my_token_seq = SEQNO_START_TOKEN - 1;
|
|
|
|
/*
|
|
* Build regular configuration
|
|
*/
|
|
totemrrp_processor_count_set (
|
|
instance->totemrrp_context,
|
|
commit_token->addr_entries);
|
|
|
|
/*
|
|
* Build transitional configuration
|
|
*/
|
|
for (i = 0; i < instance->my_new_memb_entries; i++) {
|
|
memcpy (&my_new_memb_ring_id_list[i],
|
|
&memb_list[i].ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
}
|
|
memb_set_and_with_ring_id (
|
|
instance->my_new_memb_list,
|
|
my_new_memb_ring_id_list,
|
|
instance->my_new_memb_entries,
|
|
instance->my_memb_list,
|
|
instance->my_memb_entries,
|
|
&instance->my_old_ring_id,
|
|
instance->my_trans_memb_list,
|
|
&instance->my_trans_memb_entries);
|
|
|
|
for (i = 0; i < instance->my_trans_memb_entries; i++) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"TRANS [%d] member %s:\n", i, totemip_print (&instance->my_trans_memb_list[i].addr[0]));
|
|
}
|
|
for (i = 0; i < instance->my_new_memb_entries; i++) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"position [%d] member %s:\n", i, totemip_print (&addr[i].addr[0]));
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"previous ring seq %lld rep %s\n",
|
|
memb_list[i].ring_id.seq,
|
|
totemip_print (&memb_list[i].ring_id.rep));
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"aru %x high delivered %x received flag %d\n",
|
|
memb_list[i].aru,
|
|
memb_list[i].high_delivered,
|
|
memb_list[i].received_flg);
|
|
|
|
// assert (totemip_print (&memb_list[i].ring_id.rep) != 0);
|
|
}
|
|
/*
|
|
* Determine if any received flag is false
|
|
*/
|
|
for (i = 0; i < commit_token->addr_entries; i++) {
|
|
if (memb_set_subset (&instance->my_new_memb_list[i], 1,
|
|
instance->my_trans_memb_list, instance->my_trans_memb_entries) &&
|
|
|
|
memb_list[i].received_flg == 0) {
|
|
instance->my_deliver_memb_entries = instance->my_trans_memb_entries;
|
|
memcpy (instance->my_deliver_memb_list, instance->my_trans_memb_list,
|
|
sizeof (struct srp_addr) * instance->my_trans_memb_entries);
|
|
local_received_flg = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (local_received_flg == 1) {
|
|
goto no_originate;
|
|
} /* Else originate messages if we should */
|
|
|
|
/*
|
|
* Calculate my_low_ring_aru, instance->my_high_ring_delivered for the transitional membership
|
|
*/
|
|
for (i = 0; i < commit_token->addr_entries; i++) {
|
|
if (memb_set_subset (&instance->my_new_memb_list[i], 1,
|
|
instance->my_deliver_memb_list,
|
|
instance->my_deliver_memb_entries) &&
|
|
|
|
memcmp (&instance->my_old_ring_id,
|
|
&memb_list[i].ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
if (sq_lt_compare (memb_list[i].aru, low_ring_aru)) {
|
|
|
|
low_ring_aru = memb_list[i].aru;
|
|
}
|
|
if (sq_lt_compare (instance->my_high_ring_delivered, memb_list[i].high_delivered)) {
|
|
instance->my_high_ring_delivered = memb_list[i].high_delivered;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy all old ring messages to instance->retrans_message_queue
|
|
*/
|
|
range = instance->old_ring_state_high_seq_received - low_ring_aru;
|
|
if (range == 0) {
|
|
/*
|
|
* No messages to copy
|
|
*/
|
|
goto no_originate;
|
|
}
|
|
assert (range < QUEUE_RTR_ITEMS_SIZE_MAX);
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"copying all old ring messages from %x-%x.\n",
|
|
low_ring_aru + 1, instance->old_ring_state_high_seq_received);
|
|
|
|
for (i = 1; i <= range; i++) {
|
|
struct sort_queue_item *sort_queue_item;
|
|
struct message_item message_item;
|
|
void *ptr;
|
|
int res;
|
|
|
|
res = sq_item_get (&instance->regular_sort_queue,
|
|
low_ring_aru + i, &ptr);
|
|
if (res != 0) {
|
|
continue;
|
|
}
|
|
sort_queue_item = ptr;
|
|
messages_originated++;
|
|
memset (&message_item, 0, sizeof (struct message_item));
|
|
// TODO LEAK
|
|
message_item.mcast = totemsrp_buffer_alloc (instance);
|
|
assert (message_item.mcast);
|
|
message_item.mcast->header.type = MESSAGE_TYPE_MCAST;
|
|
srp_addr_copy (&message_item.mcast->system_from, &instance->my_id);
|
|
message_item.mcast->header.encapsulated = MESSAGE_ENCAPSULATED;
|
|
message_item.mcast->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (message_item.mcast->header.nodeid);
|
|
message_item.mcast->header.endian_detector = ENDIAN_LOCAL;
|
|
memcpy (&message_item.mcast->ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
message_item.msg_len = sort_queue_item->msg_len + sizeof (struct mcast);
|
|
memcpy (((char *)message_item.mcast) + sizeof (struct mcast),
|
|
sort_queue_item->mcast,
|
|
sort_queue_item->msg_len);
|
|
cs_queue_item_add (&instance->retrans_message_queue, &message_item);
|
|
}
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Originated %d messages in RECOVERY.\n", messages_originated);
|
|
goto originated;
|
|
|
|
no_originate:
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Did not need to originate any messages in recovery.\n");
|
|
|
|
originated:
|
|
instance->my_aru = SEQNO_START_MSG;
|
|
instance->my_aru_count = 0;
|
|
instance->my_seq_unchanged = 0;
|
|
instance->my_high_seq_received = SEQNO_START_MSG;
|
|
instance->my_install_seq = SEQNO_START_MSG;
|
|
instance->last_released = SEQNO_START_MSG;
|
|
|
|
reset_token_timeout (instance); // REVIEWED
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
|
|
instance->memb_state = MEMB_STATE_RECOVERY;
|
|
instance->stats.recovery_entered++;
|
|
instance->stats.continuous_gather = 0;
|
|
|
|
return;
|
|
}
|
|
|
|
void totemsrp_event_signal (void *srp_context, enum totem_event_type type, int value)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
|
|
token_hold_cancel_send (instance);
|
|
|
|
return;
|
|
}
|
|
|
|
int totemsrp_mcast (
|
|
void *srp_context,
|
|
struct iovec *iovec,
|
|
unsigned int iov_len,
|
|
int guarantee)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
int i;
|
|
struct message_item message_item;
|
|
char *addr;
|
|
unsigned int addr_idx;
|
|
|
|
if (cs_queue_is_full (&instance->new_message_queue)) {
|
|
log_printf (instance->totemsrp_log_level_debug, "queue full\n");
|
|
return (-1);
|
|
}
|
|
|
|
memset (&message_item, 0, sizeof (struct message_item));
|
|
|
|
/*
|
|
* Allocate pending item
|
|
*/
|
|
message_item.mcast = totemsrp_buffer_alloc (instance);
|
|
if (message_item.mcast == 0) {
|
|
goto error_mcast;
|
|
}
|
|
|
|
/*
|
|
* Set mcast header
|
|
*/
|
|
message_item.mcast->header.type = MESSAGE_TYPE_MCAST;
|
|
message_item.mcast->header.endian_detector = ENDIAN_LOCAL;
|
|
message_item.mcast->header.encapsulated = MESSAGE_NOT_ENCAPSULATED;
|
|
message_item.mcast->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (message_item.mcast->header.nodeid);
|
|
|
|
message_item.mcast->guarantee = guarantee;
|
|
srp_addr_copy (&message_item.mcast->system_from, &instance->my_id);
|
|
|
|
addr = (char *)message_item.mcast;
|
|
addr_idx = sizeof (struct mcast);
|
|
for (i = 0; i < iov_len; i++) {
|
|
memcpy (&addr[addr_idx], iovec[i].iov_base, iovec[i].iov_len);
|
|
addr_idx += iovec[i].iov_len;
|
|
}
|
|
|
|
message_item.msg_len = addr_idx;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug, "mcasted message added to pending queue\n");
|
|
instance->stats.mcast_tx++;
|
|
cs_queue_item_add (&instance->new_message_queue, &message_item);
|
|
|
|
return (0);
|
|
|
|
error_mcast:
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Determine if there is room to queue a new message
|
|
*/
|
|
int totemsrp_avail (void *srp_context)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
int avail;
|
|
|
|
cs_queue_avail (&instance->new_message_queue, &avail);
|
|
|
|
return (avail);
|
|
}
|
|
|
|
/*
|
|
* ORF Token Management
|
|
*/
|
|
/*
|
|
* Recast message to mcast group if it is available
|
|
*/
|
|
static int orf_token_remcast (
|
|
struct totemsrp_instance *instance,
|
|
int seq)
|
|
{
|
|
struct sort_queue_item *sort_queue_item;
|
|
int res;
|
|
void *ptr;
|
|
|
|
struct sq *sort_queue;
|
|
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
sort_queue = &instance->recovery_sort_queue;
|
|
} else {
|
|
sort_queue = &instance->regular_sort_queue;
|
|
}
|
|
|
|
res = sq_in_range (sort_queue, seq);
|
|
if (res == 0) {
|
|
log_printf (instance->totemsrp_log_level_debug, "sq not in range\n");
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Get RTR item at seq, if not available, return
|
|
*/
|
|
res = sq_item_get (sort_queue, seq, &ptr);
|
|
if (res != 0) {
|
|
return -1;
|
|
}
|
|
|
|
sort_queue_item = ptr;
|
|
|
|
totemrrp_mcast_noflush_send (
|
|
instance->totemrrp_context,
|
|
sort_queue_item->mcast,
|
|
sort_queue_item->msg_len);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Free all freeable messages from ring
|
|
*/
|
|
static void messages_free (
|
|
struct totemsrp_instance *instance,
|
|
unsigned int token_aru)
|
|
{
|
|
struct sort_queue_item *regular_message;
|
|
unsigned int i;
|
|
int res;
|
|
int log_release = 0;
|
|
unsigned int release_to;
|
|
unsigned int range = 0;
|
|
|
|
release_to = token_aru;
|
|
if (sq_lt_compare (instance->my_last_aru, release_to)) {
|
|
release_to = instance->my_last_aru;
|
|
}
|
|
if (sq_lt_compare (instance->my_high_delivered, release_to)) {
|
|
release_to = instance->my_high_delivered;
|
|
}
|
|
|
|
/*
|
|
* Ensure we dont try release before an already released point
|
|
*/
|
|
if (sq_lt_compare (release_to, instance->last_released)) {
|
|
return;
|
|
}
|
|
|
|
range = release_to - instance->last_released;
|
|
assert (range < QUEUE_RTR_ITEMS_SIZE_MAX);
|
|
|
|
/*
|
|
* Release retransmit list items if group aru indicates they are transmitted
|
|
*/
|
|
for (i = 1; i <= range; i++) {
|
|
void *ptr;
|
|
|
|
res = sq_item_get (&instance->regular_sort_queue,
|
|
instance->last_released + i, &ptr);
|
|
if (res == 0) {
|
|
regular_message = ptr;
|
|
totemsrp_buffer_release (instance, regular_message->mcast);
|
|
}
|
|
sq_items_release (&instance->regular_sort_queue,
|
|
instance->last_released + i);
|
|
|
|
log_release = 1;
|
|
}
|
|
instance->last_released += range;
|
|
|
|
if (log_release) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"releasing messages up to and including %x\n", release_to);
|
|
}
|
|
}
|
|
|
|
static void update_aru (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
unsigned int i;
|
|
int res;
|
|
struct sq *sort_queue;
|
|
unsigned int range;
|
|
unsigned int my_aru_saved = 0;
|
|
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
sort_queue = &instance->recovery_sort_queue;
|
|
} else {
|
|
sort_queue = &instance->regular_sort_queue;
|
|
}
|
|
|
|
range = instance->my_high_seq_received - instance->my_aru;
|
|
if (range > 1024) {
|
|
return;
|
|
}
|
|
|
|
my_aru_saved = instance->my_aru;
|
|
for (i = 1; i <= range; i++) {
|
|
|
|
void *ptr;
|
|
|
|
res = sq_item_get (sort_queue, my_aru_saved + i, &ptr);
|
|
/*
|
|
* If hole, stop updating aru
|
|
*/
|
|
if (res != 0) {
|
|
break;
|
|
}
|
|
}
|
|
instance->my_aru += i - 1;
|
|
}
|
|
|
|
/*
|
|
* Multicasts pending messages onto the ring (requires orf_token possession)
|
|
*/
|
|
static int orf_token_mcast (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *token,
|
|
int fcc_mcasts_allowed)
|
|
{
|
|
struct message_item *message_item = 0;
|
|
struct cs_queue *mcast_queue;
|
|
struct sq *sort_queue;
|
|
struct sort_queue_item sort_queue_item;
|
|
struct mcast *mcast;
|
|
unsigned int fcc_mcast_current;
|
|
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
mcast_queue = &instance->retrans_message_queue;
|
|
sort_queue = &instance->recovery_sort_queue;
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
} else {
|
|
mcast_queue = &instance->new_message_queue;
|
|
sort_queue = &instance->regular_sort_queue;
|
|
}
|
|
|
|
for (fcc_mcast_current = 0; fcc_mcast_current < fcc_mcasts_allowed; fcc_mcast_current++) {
|
|
if (cs_queue_is_empty (mcast_queue)) {
|
|
break;
|
|
}
|
|
message_item = (struct message_item *)cs_queue_item_get (mcast_queue);
|
|
|
|
message_item->mcast->seq = ++token->seq;
|
|
message_item->mcast->this_seqno = instance->global_seqno++;
|
|
|
|
/*
|
|
* Build IO vector
|
|
*/
|
|
memset (&sort_queue_item, 0, sizeof (struct sort_queue_item));
|
|
sort_queue_item.mcast = message_item->mcast;
|
|
sort_queue_item.msg_len = message_item->msg_len;
|
|
|
|
mcast = sort_queue_item.mcast;
|
|
|
|
memcpy (&mcast->ring_id, &instance->my_ring_id, sizeof (struct memb_ring_id));
|
|
|
|
/*
|
|
* Add message to retransmit queue
|
|
*/
|
|
sq_item_add (sort_queue, &sort_queue_item, message_item->mcast->seq);
|
|
|
|
totemrrp_mcast_noflush_send (
|
|
instance->totemrrp_context,
|
|
message_item->mcast,
|
|
message_item->msg_len);
|
|
|
|
/*
|
|
* Delete item from pending queue
|
|
*/
|
|
cs_queue_item_remove (mcast_queue);
|
|
|
|
/*
|
|
* If messages mcasted, deliver any new messages to totempg
|
|
*/
|
|
instance->my_high_seq_received = token->seq;
|
|
}
|
|
|
|
update_aru (instance);
|
|
|
|
/*
|
|
* Return 1 if more messages are available for single node clusters
|
|
*/
|
|
return (fcc_mcast_current);
|
|
}
|
|
|
|
/*
|
|
* Remulticasts messages in orf_token's retransmit list (requires orf_token)
|
|
* Modify's orf_token's rtr to include retransmits required by this process
|
|
*/
|
|
static int orf_token_rtr (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *orf_token,
|
|
unsigned int *fcc_allowed)
|
|
{
|
|
unsigned int res;
|
|
unsigned int i, j;
|
|
unsigned int found;
|
|
struct sq *sort_queue;
|
|
struct rtr_item *rtr_list;
|
|
unsigned int range = 0;
|
|
char retransmit_msg[1024];
|
|
char value[64];
|
|
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
sort_queue = &instance->recovery_sort_queue;
|
|
} else {
|
|
sort_queue = &instance->regular_sort_queue;
|
|
}
|
|
|
|
rtr_list = &orf_token->rtr_list[0];
|
|
|
|
strcpy (retransmit_msg, "Retransmit List: ");
|
|
if (orf_token->rtr_list_entries) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Retransmit List %d\n", orf_token->rtr_list_entries);
|
|
for (i = 0; i < orf_token->rtr_list_entries; i++) {
|
|
sprintf (value, "%x ", rtr_list[i].seq);
|
|
strcat (retransmit_msg, value);
|
|
}
|
|
strcat (retransmit_msg, "\n");
|
|
log_printf (instance->totemsrp_log_level_notice,
|
|
"%s", retransmit_msg);
|
|
}
|
|
|
|
/*
|
|
* Retransmit messages on orf_token's RTR list from RTR queue
|
|
*/
|
|
for (instance->fcc_remcast_current = 0, i = 0;
|
|
instance->fcc_remcast_current < *fcc_allowed && i < orf_token->rtr_list_entries;) {
|
|
|
|
/*
|
|
* If this retransmit request isn't from this configuration,
|
|
* try next rtr entry
|
|
*/
|
|
if (memcmp (&rtr_list[i].ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id)) != 0) {
|
|
|
|
i += 1;
|
|
continue;
|
|
}
|
|
|
|
res = orf_token_remcast (instance, rtr_list[i].seq);
|
|
if (res == 0) {
|
|
/*
|
|
* Multicasted message, so no need to copy to new retransmit list
|
|
*/
|
|
orf_token->rtr_list_entries -= 1;
|
|
assert (orf_token->rtr_list_entries >= 0);
|
|
memmove (&rtr_list[i], &rtr_list[i + 1],
|
|
sizeof (struct rtr_item) * (orf_token->rtr_list_entries - i));
|
|
|
|
instance->stats.mcast_retx++;
|
|
instance->fcc_remcast_current++;
|
|
} else {
|
|
i += 1;
|
|
}
|
|
}
|
|
*fcc_allowed = *fcc_allowed - instance->fcc_remcast_current;
|
|
|
|
/*
|
|
* Add messages to retransmit to RTR list
|
|
* but only retry if there is room in the retransmit list
|
|
*/
|
|
|
|
range = orf_token->seq - instance->my_aru;
|
|
assert (range < QUEUE_RTR_ITEMS_SIZE_MAX);
|
|
|
|
for (i = 1; (orf_token->rtr_list_entries < RETRANSMIT_ENTRIES_MAX) &&
|
|
(i <= range); i++) {
|
|
|
|
/*
|
|
* Ensure message is within the sort queue range
|
|
*/
|
|
res = sq_in_range (sort_queue, instance->my_aru + i);
|
|
if (res == 0) {
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Find if a message is missing from this processor
|
|
*/
|
|
res = sq_item_inuse (sort_queue, instance->my_aru + i);
|
|
if (res == 0) {
|
|
/*
|
|
* Determine how many times we have missed receiving
|
|
* this sequence number. sq_item_miss_count increments
|
|
* a counter for the sequence number. The miss count
|
|
* will be returned and compared. This allows time for
|
|
* delayed multicast messages to be received before
|
|
* declaring the message is missing and requesting a
|
|
* retransmit.
|
|
*/
|
|
res = sq_item_miss_count (sort_queue, instance->my_aru + i);
|
|
if (res < instance->totem_config->miss_count_const) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Determine if missing message is already in retransmit list
|
|
*/
|
|
found = 0;
|
|
for (j = 0; j < orf_token->rtr_list_entries; j++) {
|
|
if (instance->my_aru + i == rtr_list[j].seq) {
|
|
found = 1;
|
|
}
|
|
}
|
|
if (found == 0) {
|
|
/*
|
|
* Missing message not found in current retransmit list so add it
|
|
*/
|
|
memcpy (&rtr_list[orf_token->rtr_list_entries].ring_id,
|
|
&instance->my_ring_id, sizeof (struct memb_ring_id));
|
|
rtr_list[orf_token->rtr_list_entries].seq = instance->my_aru + i;
|
|
orf_token->rtr_list_entries++;
|
|
}
|
|
}
|
|
}
|
|
return (instance->fcc_remcast_current);
|
|
}
|
|
|
|
static void token_retransmit (struct totemsrp_instance *instance)
|
|
{
|
|
totemrrp_token_send (instance->totemrrp_context,
|
|
instance->orf_token_retransmit,
|
|
instance->orf_token_retransmit_size);
|
|
}
|
|
|
|
/*
|
|
* Retransmit the regular token if no mcast or token has
|
|
* been received in retransmit token period retransmit
|
|
* the token to the next processor
|
|
*/
|
|
static void timer_function_token_retransmit_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_GATHER:
|
|
break;
|
|
case MEMB_STATE_COMMIT:
|
|
case MEMB_STATE_OPERATIONAL:
|
|
case MEMB_STATE_RECOVERY:
|
|
token_retransmit (instance);
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void timer_function_token_hold_retransmit_timeout (void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_GATHER:
|
|
break;
|
|
case MEMB_STATE_COMMIT:
|
|
break;
|
|
case MEMB_STATE_OPERATIONAL:
|
|
case MEMB_STATE_RECOVERY:
|
|
token_retransmit (instance);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void timer_function_merge_detect_timeout(void *data)
|
|
{
|
|
struct totemsrp_instance *instance = data;
|
|
|
|
instance->my_merge_detect_timeout_outstanding = 0;
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
if (totemip_equal(&instance->my_ring_id.rep, &instance->my_id.addr[0])) {
|
|
memb_merge_detect_transmit (instance);
|
|
}
|
|
break;
|
|
case MEMB_STATE_GATHER:
|
|
case MEMB_STATE_COMMIT:
|
|
case MEMB_STATE_RECOVERY:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Send orf_token to next member (requires orf_token)
|
|
*/
|
|
static int token_send (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *orf_token,
|
|
int forward_token)
|
|
{
|
|
int res = 0;
|
|
unsigned int orf_token_size;
|
|
|
|
orf_token_size = sizeof (struct orf_token) +
|
|
(orf_token->rtr_list_entries * sizeof (struct rtr_item));
|
|
|
|
memcpy (instance->orf_token_retransmit, orf_token, orf_token_size);
|
|
instance->orf_token_retransmit_size = orf_token_size;
|
|
orf_token->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (orf_token->header.nodeid);
|
|
|
|
if (forward_token == 0) {
|
|
return (0);
|
|
}
|
|
|
|
totemrrp_token_send (instance->totemrrp_context,
|
|
orf_token,
|
|
orf_token_size);
|
|
|
|
return (res);
|
|
}
|
|
|
|
static int token_hold_cancel_send (struct totemsrp_instance *instance)
|
|
{
|
|
struct token_hold_cancel token_hold_cancel;
|
|
|
|
/*
|
|
* Only cancel if the token is currently held
|
|
*/
|
|
if (instance->my_token_held == 0) {
|
|
return (0);
|
|
}
|
|
instance->my_token_held = 0;
|
|
|
|
/*
|
|
* Build message
|
|
*/
|
|
token_hold_cancel.header.type = MESSAGE_TYPE_TOKEN_HOLD_CANCEL;
|
|
token_hold_cancel.header.endian_detector = ENDIAN_LOCAL;
|
|
token_hold_cancel.header.encapsulated = 0;
|
|
token_hold_cancel.header.nodeid = instance->my_id.addr[0].nodeid;
|
|
memcpy (&token_hold_cancel.ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
assert (token_hold_cancel.header.nodeid);
|
|
|
|
instance->stats.token_hold_cancel_tx++;
|
|
|
|
totemrrp_mcast_flush_send (instance->totemrrp_context, &token_hold_cancel,
|
|
sizeof (struct token_hold_cancel));
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int orf_token_send_initial (struct totemsrp_instance *instance)
|
|
{
|
|
struct orf_token orf_token;
|
|
int res;
|
|
|
|
orf_token.header.type = MESSAGE_TYPE_ORF_TOKEN;
|
|
orf_token.header.endian_detector = ENDIAN_LOCAL;
|
|
orf_token.header.encapsulated = 0;
|
|
orf_token.header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (orf_token.header.nodeid);
|
|
orf_token.seq = SEQNO_START_MSG;
|
|
orf_token.token_seq = SEQNO_START_TOKEN;
|
|
orf_token.retrans_flg = 1;
|
|
instance->my_set_retrans_flg = 1;
|
|
instance->stats.orf_token_tx++;
|
|
|
|
if (cs_queue_is_empty (&instance->retrans_message_queue) == 1) {
|
|
orf_token.retrans_flg = 0;
|
|
instance->my_set_retrans_flg = 0;
|
|
} else {
|
|
orf_token.retrans_flg = 1;
|
|
instance->my_set_retrans_flg = 1;
|
|
}
|
|
|
|
orf_token.aru = 0;
|
|
orf_token.aru = SEQNO_START_MSG - 1;
|
|
orf_token.aru_addr = instance->my_id.addr[0].nodeid;
|
|
|
|
memcpy (&orf_token.ring_id, &instance->my_ring_id, sizeof (struct memb_ring_id));
|
|
orf_token.fcc = 0;
|
|
orf_token.backlog = 0;
|
|
|
|
orf_token.rtr_list_entries = 0;
|
|
|
|
res = token_send (instance, &orf_token, 1);
|
|
|
|
return (res);
|
|
}
|
|
|
|
static void memb_state_commit_token_update (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr *addr;
|
|
struct memb_commit_token_memb_entry *memb_list;
|
|
unsigned int high_aru;
|
|
unsigned int i;
|
|
|
|
addr = (struct srp_addr *)instance->commit_token->end_of_commit_token;
|
|
memb_list = (struct memb_commit_token_memb_entry *)(addr + instance->commit_token->addr_entries);
|
|
|
|
memcpy (instance->my_new_memb_list, addr,
|
|
sizeof (struct srp_addr) * instance->commit_token->addr_entries);
|
|
|
|
instance->my_new_memb_entries = instance->commit_token->addr_entries;
|
|
|
|
memcpy (&memb_list[instance->commit_token->memb_index].ring_id,
|
|
&instance->my_old_ring_id, sizeof (struct memb_ring_id));
|
|
|
|
memb_list[instance->commit_token->memb_index].aru = instance->old_ring_state_aru;
|
|
/*
|
|
* TODO high delivered is really instance->my_aru, but with safe this
|
|
* could change?
|
|
*/
|
|
instance->my_received_flg =
|
|
(instance->my_aru == instance->my_high_seq_received);
|
|
|
|
memb_list[instance->commit_token->memb_index].received_flg = instance->my_received_flg;
|
|
|
|
memb_list[instance->commit_token->memb_index].high_delivered = instance->my_high_delivered;
|
|
/*
|
|
* find high aru up to current memb_index for all matching ring ids
|
|
* if any ring id matching memb_index has aru less then high aru set
|
|
* received flag for that entry to false
|
|
*/
|
|
high_aru = memb_list[instance->commit_token->memb_index].aru;
|
|
for (i = 0; i <= instance->commit_token->memb_index; i++) {
|
|
if (memcmp (&memb_list[instance->commit_token->memb_index].ring_id,
|
|
&memb_list[i].ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
if (sq_lt_compare (high_aru, memb_list[i].aru)) {
|
|
high_aru = memb_list[i].aru;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i <= instance->commit_token->memb_index; i++) {
|
|
if (memcmp (&memb_list[instance->commit_token->memb_index].ring_id,
|
|
&memb_list[i].ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
if (sq_lt_compare (memb_list[i].aru, high_aru)) {
|
|
memb_list[i].received_flg = 0;
|
|
if (i == instance->commit_token->memb_index) {
|
|
instance->my_received_flg = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
instance->commit_token->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
instance->commit_token->memb_index += 1;
|
|
assert (instance->commit_token->memb_index <= instance->commit_token->addr_entries);
|
|
assert (instance->commit_token->header.nodeid);
|
|
}
|
|
|
|
static void memb_state_commit_token_target_set (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr *addr;
|
|
unsigned int i;
|
|
|
|
addr = (struct srp_addr *)instance->commit_token->end_of_commit_token;
|
|
|
|
for (i = 0; i < instance->totem_config->interface_count; i++) {
|
|
totemrrp_token_target_set (
|
|
instance->totemrrp_context,
|
|
&addr[instance->commit_token->memb_index %
|
|
instance->commit_token->addr_entries].addr[i],
|
|
i);
|
|
}
|
|
}
|
|
|
|
static int memb_state_commit_token_send_recovery (
|
|
struct totemsrp_instance *instance,
|
|
struct memb_commit_token *commit_token)
|
|
{
|
|
unsigned int commit_token_size;
|
|
|
|
commit_token->token_seq++;
|
|
commit_token_size = sizeof (struct memb_commit_token) +
|
|
((sizeof (struct srp_addr) +
|
|
sizeof (struct memb_commit_token_memb_entry)) * commit_token->addr_entries);
|
|
/*
|
|
* Make a copy for retransmission if necessary
|
|
*/
|
|
memcpy (instance->orf_token_retransmit, commit_token, commit_token_size);
|
|
instance->orf_token_retransmit_size = commit_token_size;
|
|
|
|
instance->stats.memb_commit_token_tx++;
|
|
|
|
totemrrp_token_send (instance->totemrrp_context,
|
|
commit_token,
|
|
commit_token_size);
|
|
|
|
/*
|
|
* Request retransmission of the commit token in case it is lost
|
|
*/
|
|
reset_token_retransmit_timeout (instance);
|
|
return (0);
|
|
}
|
|
|
|
static int memb_state_commit_token_send (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
unsigned int commit_token_size;
|
|
|
|
instance->commit_token->token_seq++;
|
|
commit_token_size = sizeof (struct memb_commit_token) +
|
|
((sizeof (struct srp_addr) +
|
|
sizeof (struct memb_commit_token_memb_entry)) * instance->commit_token->addr_entries);
|
|
/*
|
|
* Make a copy for retransmission if necessary
|
|
*/
|
|
memcpy (instance->orf_token_retransmit, instance->commit_token, commit_token_size);
|
|
instance->orf_token_retransmit_size = commit_token_size;
|
|
|
|
instance->stats.memb_commit_token_tx++;
|
|
|
|
totemrrp_token_send (instance->totemrrp_context,
|
|
instance->commit_token,
|
|
commit_token_size);
|
|
|
|
/*
|
|
* Request retransmission of the commit token in case it is lost
|
|
*/
|
|
reset_token_retransmit_timeout (instance);
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int memb_lowest_in_config (struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr token_memb[PROCESSOR_COUNT_MAX];
|
|
int token_memb_entries = 0;
|
|
int i;
|
|
struct totem_ip_address *lowest_addr;
|
|
|
|
memb_set_subtract (token_memb, &token_memb_entries,
|
|
instance->my_proc_list, instance->my_proc_list_entries,
|
|
instance->my_failed_list, instance->my_failed_list_entries);
|
|
|
|
/*
|
|
* find representative by searching for smallest identifier
|
|
*/
|
|
|
|
lowest_addr = &token_memb[0].addr[0];
|
|
for (i = 1; i < token_memb_entries; i++) {
|
|
if (totemip_compare(lowest_addr, &token_memb[i].addr[0]) > 0) {
|
|
totemip_copy (lowest_addr, &token_memb[i].addr[0]);
|
|
}
|
|
}
|
|
return (totemip_compare (lowest_addr, &instance->my_id.addr[0]) == 0);
|
|
}
|
|
|
|
static int srp_addr_compare (const void *a, const void *b)
|
|
{
|
|
const struct srp_addr *srp_a = (const struct srp_addr *)a;
|
|
const struct srp_addr *srp_b = (const struct srp_addr *)b;
|
|
|
|
return (totemip_compare (&srp_a->addr[0], &srp_b->addr[0]));
|
|
}
|
|
|
|
static void memb_state_commit_token_create (
|
|
struct totemsrp_instance *instance)
|
|
{
|
|
struct srp_addr token_memb[PROCESSOR_COUNT_MAX];
|
|
struct srp_addr *addr;
|
|
struct memb_commit_token_memb_entry *memb_list;
|
|
int token_memb_entries = 0;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Creating commit token because I am the rep.\n");
|
|
|
|
memb_set_subtract (token_memb, &token_memb_entries,
|
|
instance->my_proc_list, instance->my_proc_list_entries,
|
|
instance->my_failed_list, instance->my_failed_list_entries);
|
|
|
|
memset (instance->commit_token, 0, sizeof (struct memb_commit_token));
|
|
instance->commit_token->header.type = MESSAGE_TYPE_MEMB_COMMIT_TOKEN;
|
|
instance->commit_token->header.endian_detector = ENDIAN_LOCAL;
|
|
instance->commit_token->header.encapsulated = 0;
|
|
instance->commit_token->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (instance->commit_token->header.nodeid);
|
|
|
|
totemip_copy(&instance->commit_token->ring_id.rep, &instance->my_id.addr[0]);
|
|
|
|
instance->commit_token->ring_id.seq = instance->token_ring_id_seq + 4;
|
|
|
|
/*
|
|
* This qsort is necessary to ensure the commit token traverses
|
|
* the ring in the proper order
|
|
*/
|
|
qsort (token_memb, token_memb_entries, sizeof (struct srp_addr),
|
|
srp_addr_compare);
|
|
|
|
instance->commit_token->memb_index = 0;
|
|
instance->commit_token->addr_entries = token_memb_entries;
|
|
|
|
addr = (struct srp_addr *)instance->commit_token->end_of_commit_token;
|
|
memb_list = (struct memb_commit_token_memb_entry *)(addr + instance->commit_token->addr_entries);
|
|
|
|
memcpy (addr, token_memb,
|
|
token_memb_entries * sizeof (struct srp_addr));
|
|
memset (memb_list, 0,
|
|
sizeof (struct memb_commit_token_memb_entry) * token_memb_entries);
|
|
}
|
|
|
|
static void memb_join_message_send (struct totemsrp_instance *instance)
|
|
{
|
|
char memb_join_data[10000];
|
|
struct memb_join *memb_join = (struct memb_join *)memb_join_data;
|
|
char *addr;
|
|
unsigned int addr_idx;
|
|
|
|
memb_join->header.type = MESSAGE_TYPE_MEMB_JOIN;
|
|
memb_join->header.endian_detector = ENDIAN_LOCAL;
|
|
memb_join->header.encapsulated = 0;
|
|
memb_join->header.nodeid = instance->my_id.addr[0].nodeid;
|
|
assert (memb_join->header.nodeid);
|
|
|
|
memb_join->ring_seq = instance->my_ring_id.seq;
|
|
memb_join->proc_list_entries = instance->my_proc_list_entries;
|
|
memb_join->failed_list_entries = instance->my_failed_list_entries;
|
|
srp_addr_copy (&memb_join->system_from, &instance->my_id);
|
|
|
|
/*
|
|
* This mess adds the joined and failed processor lists into the join
|
|
* message
|
|
*/
|
|
addr = (char *)memb_join;
|
|
addr_idx = sizeof (struct memb_join);
|
|
memcpy (&addr[addr_idx],
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries *
|
|
sizeof (struct srp_addr));
|
|
addr_idx +=
|
|
instance->my_proc_list_entries *
|
|
sizeof (struct srp_addr);
|
|
memcpy (&addr[addr_idx],
|
|
instance->my_failed_list,
|
|
instance->my_failed_list_entries *
|
|
sizeof (struct srp_addr));
|
|
addr_idx +=
|
|
instance->my_failed_list_entries *
|
|
sizeof (struct srp_addr);
|
|
|
|
|
|
if (instance->totem_config->send_join_timeout) {
|
|
usleep (random() % (instance->totem_config->send_join_timeout * 1000));
|
|
}
|
|
|
|
instance->stats.memb_join_tx++;
|
|
|
|
totemrrp_mcast_flush_send (
|
|
instance->totemrrp_context,
|
|
memb_join,
|
|
addr_idx);
|
|
}
|
|
|
|
static void memb_leave_message_send (struct totemsrp_instance *instance)
|
|
{
|
|
char memb_join_data[10000];
|
|
struct memb_join *memb_join = (struct memb_join *)memb_join_data;
|
|
char *addr;
|
|
unsigned int addr_idx;
|
|
int active_memb_entries;
|
|
struct srp_addr active_memb[PROCESSOR_COUNT_MAX];
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"sending join/leave message\n");
|
|
|
|
/*
|
|
* add us to the failed list, and remove us from
|
|
* the members list
|
|
*/
|
|
memb_set_merge(
|
|
&instance->my_id, 1,
|
|
instance->my_failed_list, &instance->my_failed_list_entries);
|
|
|
|
memb_set_subtract (active_memb, &active_memb_entries,
|
|
instance->my_proc_list, instance->my_proc_list_entries,
|
|
&instance->my_id, 1);
|
|
|
|
|
|
memb_join->header.type = MESSAGE_TYPE_MEMB_JOIN;
|
|
memb_join->header.endian_detector = ENDIAN_LOCAL;
|
|
memb_join->header.encapsulated = 0;
|
|
memb_join->header.nodeid = LEAVE_DUMMY_NODEID;
|
|
|
|
memb_join->ring_seq = instance->my_ring_id.seq;
|
|
memb_join->proc_list_entries = active_memb_entries;
|
|
memb_join->failed_list_entries = instance->my_failed_list_entries;
|
|
srp_addr_copy (&memb_join->system_from, &instance->my_id);
|
|
memb_join->system_from.addr[0].nodeid = LEAVE_DUMMY_NODEID;
|
|
|
|
// TODO: CC Maybe use the actual join send routine.
|
|
/*
|
|
* This mess adds the joined and failed processor lists into the join
|
|
* message
|
|
*/
|
|
addr = (char *)memb_join;
|
|
addr_idx = sizeof (struct memb_join);
|
|
memcpy (&addr[addr_idx],
|
|
active_memb,
|
|
active_memb_entries *
|
|
sizeof (struct srp_addr));
|
|
addr_idx +=
|
|
active_memb_entries *
|
|
sizeof (struct srp_addr);
|
|
memcpy (&addr[addr_idx],
|
|
instance->my_failed_list,
|
|
instance->my_failed_list_entries *
|
|
sizeof (struct srp_addr));
|
|
addr_idx +=
|
|
instance->my_failed_list_entries *
|
|
sizeof (struct srp_addr);
|
|
|
|
|
|
if (instance->totem_config->send_join_timeout) {
|
|
usleep (random() % (instance->totem_config->send_join_timeout * 1000));
|
|
}
|
|
instance->stats.memb_join_tx++;
|
|
|
|
totemrrp_mcast_flush_send (
|
|
instance->totemrrp_context,
|
|
memb_join,
|
|
addr_idx);
|
|
}
|
|
|
|
static void memb_merge_detect_transmit (struct totemsrp_instance *instance)
|
|
{
|
|
struct memb_merge_detect memb_merge_detect;
|
|
|
|
memb_merge_detect.header.type = MESSAGE_TYPE_MEMB_MERGE_DETECT;
|
|
memb_merge_detect.header.endian_detector = ENDIAN_LOCAL;
|
|
memb_merge_detect.header.encapsulated = 0;
|
|
memb_merge_detect.header.nodeid = instance->my_id.addr[0].nodeid;
|
|
srp_addr_copy (&memb_merge_detect.system_from, &instance->my_id);
|
|
memcpy (&memb_merge_detect.ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id));
|
|
assert (memb_merge_detect.header.nodeid);
|
|
|
|
instance->stats.memb_merge_detect_tx++;
|
|
totemrrp_mcast_flush_send (instance->totemrrp_context,
|
|
&memb_merge_detect,
|
|
sizeof (struct memb_merge_detect));
|
|
}
|
|
|
|
static void memb_ring_id_create_or_load (
|
|
struct totemsrp_instance *instance,
|
|
struct memb_ring_id *memb_ring_id)
|
|
{
|
|
int fd;
|
|
int res = 0;
|
|
char filename[PATH_MAX];
|
|
char error_str[256];
|
|
|
|
snprintf (filename, sizeof(filename), "%s/ringid_%s",
|
|
rundir, totemip_print (&instance->my_id.addr[0]));
|
|
fd = open (filename, O_RDONLY, 0700);
|
|
/*
|
|
* If file can be opened and read, read the ring id
|
|
*/
|
|
if (fd != -1) {
|
|
res = read (fd, &memb_ring_id->seq, sizeof (uint64_t));
|
|
close (fd);
|
|
}
|
|
/*
|
|
* If file could not be opened or read, create a new ring id
|
|
*/
|
|
if ((fd == -1) || (res != sizeof (uint64_t))) {
|
|
memb_ring_id->seq = 0;
|
|
umask(0);
|
|
fd = open (filename, O_CREAT|O_RDWR, 0700);
|
|
if (fd != -1) {
|
|
res = write (fd, &memb_ring_id->seq, sizeof (uint64_t));
|
|
close (fd);
|
|
if (res == -1) {
|
|
strerror_r (errno, error_str, sizeof (error_str));
|
|
log_printf (instance->totemsrp_log_level_warning,
|
|
"Couldn't write ringid file '%s' %s\n",
|
|
filename, error_str);
|
|
}
|
|
} else {
|
|
strerror_r (errno, error_str, sizeof (error_str));
|
|
log_printf (instance->totemsrp_log_level_warning,
|
|
"Couldn't create ringid file '%s' %s\n",
|
|
filename, error_str);
|
|
}
|
|
}
|
|
|
|
totemip_copy(&memb_ring_id->rep, &instance->my_id.addr[0]);
|
|
assert (!totemip_zero_check(&memb_ring_id->rep));
|
|
instance->token_ring_id_seq = memb_ring_id->seq;
|
|
}
|
|
|
|
static void memb_ring_id_set_and_store (
|
|
struct totemsrp_instance *instance,
|
|
const struct memb_ring_id *ring_id)
|
|
{
|
|
char filename[256];
|
|
int fd;
|
|
int res;
|
|
|
|
memcpy (&instance->my_ring_id, ring_id, sizeof (struct memb_ring_id));
|
|
|
|
snprintf (filename, sizeof(filename), "%s/ringid_%s",
|
|
rundir, totemip_print (&instance->my_id.addr[0]));
|
|
|
|
fd = open (filename, O_WRONLY, 0777);
|
|
if (fd == -1) {
|
|
fd = open (filename, O_CREAT|O_RDWR, 0777);
|
|
}
|
|
if (fd == -1) {
|
|
char error_str[100];
|
|
strerror_r(errno, error_str, 100);
|
|
log_printf (instance->totemsrp_log_level_warning,
|
|
"Couldn't store new ring id %llx to stable storage (%s)\n",
|
|
instance->my_ring_id.seq, error_str);
|
|
assert (0);
|
|
return;
|
|
}
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Storing new sequence id for ring %llx\n", instance->my_ring_id.seq);
|
|
//assert (fd > 0);
|
|
res = write (fd, &instance->my_ring_id.seq, sizeof (unsigned long long));
|
|
assert (res == sizeof (unsigned long long));
|
|
close (fd);
|
|
}
|
|
|
|
int totemsrp_callback_token_create (
|
|
void *srp_context,
|
|
void **handle_out,
|
|
enum totem_callback_token_type type,
|
|
int delete,
|
|
int (*callback_fn) (enum totem_callback_token_type type, const void *),
|
|
const void *data)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context;
|
|
struct token_callback_instance *callback_handle;
|
|
|
|
token_hold_cancel_send (instance);
|
|
|
|
callback_handle = malloc (sizeof (struct token_callback_instance));
|
|
if (callback_handle == 0) {
|
|
return (-1);
|
|
}
|
|
*handle_out = (void *)callback_handle;
|
|
list_init (&callback_handle->list);
|
|
callback_handle->callback_fn = callback_fn;
|
|
callback_handle->data = (void *) data;
|
|
callback_handle->callback_type = type;
|
|
callback_handle->delete = delete;
|
|
switch (type) {
|
|
case TOTEM_CALLBACK_TOKEN_RECEIVED:
|
|
list_add (&callback_handle->list, &instance->token_callback_received_listhead);
|
|
break;
|
|
case TOTEM_CALLBACK_TOKEN_SENT:
|
|
list_add (&callback_handle->list, &instance->token_callback_sent_listhead);
|
|
break;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void totemsrp_callback_token_destroy (void *srp_context, void **handle_out)
|
|
{
|
|
struct token_callback_instance *h;
|
|
|
|
if (*handle_out) {
|
|
h = (struct token_callback_instance *)*handle_out;
|
|
list_del (&h->list);
|
|
free (h);
|
|
h = NULL;
|
|
*handle_out = 0;
|
|
}
|
|
}
|
|
|
|
static void token_callbacks_execute (
|
|
struct totemsrp_instance *instance,
|
|
enum totem_callback_token_type type)
|
|
{
|
|
struct list_head *list;
|
|
struct list_head *list_next;
|
|
struct list_head *callback_listhead = 0;
|
|
struct token_callback_instance *token_callback_instance;
|
|
int res;
|
|
int del;
|
|
|
|
switch (type) {
|
|
case TOTEM_CALLBACK_TOKEN_RECEIVED:
|
|
callback_listhead = &instance->token_callback_received_listhead;
|
|
break;
|
|
case TOTEM_CALLBACK_TOKEN_SENT:
|
|
callback_listhead = &instance->token_callback_sent_listhead;
|
|
break;
|
|
default:
|
|
assert (0);
|
|
}
|
|
|
|
for (list = callback_listhead->next; list != callback_listhead;
|
|
list = list_next) {
|
|
|
|
token_callback_instance = list_entry (list, struct token_callback_instance, list);
|
|
|
|
list_next = list->next;
|
|
del = token_callback_instance->delete;
|
|
if (del == 1) {
|
|
list_del (list);
|
|
}
|
|
|
|
res = token_callback_instance->callback_fn (
|
|
token_callback_instance->callback_type,
|
|
token_callback_instance->data);
|
|
/*
|
|
* This callback failed to execute, try it again on the next token
|
|
*/
|
|
if (res == -1 && del == 1) {
|
|
list_add (list, callback_listhead);
|
|
} else if (del) {
|
|
free (token_callback_instance);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Flow control functions
|
|
*/
|
|
static unsigned int backlog_get (struct totemsrp_instance *instance)
|
|
{
|
|
unsigned int backlog = 0;
|
|
|
|
if (instance->memb_state == MEMB_STATE_OPERATIONAL) {
|
|
backlog = cs_queue_used (&instance->new_message_queue);
|
|
} else
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
backlog = cs_queue_used (&instance->retrans_message_queue);
|
|
}
|
|
instance->stats.token[instance->stats.latest_token].backlog_calc = backlog;
|
|
return (backlog);
|
|
}
|
|
|
|
static int fcc_calculate (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *token)
|
|
{
|
|
unsigned int transmits_allowed;
|
|
unsigned int backlog_calc;
|
|
|
|
transmits_allowed = instance->totem_config->max_messages;
|
|
|
|
if (transmits_allowed > instance->totem_config->window_size - token->fcc) {
|
|
transmits_allowed = instance->totem_config->window_size - token->fcc;
|
|
}
|
|
|
|
instance->my_cbl = backlog_get (instance);
|
|
|
|
/*
|
|
* Only do backlog calculation if there is a backlog otherwise
|
|
* we would result in div by zero
|
|
*/
|
|
if (token->backlog + instance->my_cbl - instance->my_pbl) {
|
|
backlog_calc = (instance->totem_config->window_size * instance->my_pbl) /
|
|
(token->backlog + instance->my_cbl - instance->my_pbl);
|
|
if (backlog_calc > 0 && transmits_allowed > backlog_calc) {
|
|
transmits_allowed = backlog_calc;
|
|
}
|
|
}
|
|
|
|
return (transmits_allowed);
|
|
}
|
|
|
|
/*
|
|
* don't overflow the RTR sort queue
|
|
*/
|
|
static void fcc_rtr_limit (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *token,
|
|
unsigned int *transmits_allowed)
|
|
{
|
|
int check = QUEUE_RTR_ITEMS_SIZE_MAX;
|
|
check -= (*transmits_allowed + instance->totem_config->window_size);
|
|
assert (check >= 0);
|
|
if (sq_lt_compare (instance->last_released +
|
|
QUEUE_RTR_ITEMS_SIZE_MAX - *transmits_allowed -
|
|
instance->totem_config->window_size,
|
|
|
|
token->seq)) {
|
|
|
|
*transmits_allowed = 0;
|
|
}
|
|
}
|
|
|
|
static void fcc_token_update (
|
|
struct totemsrp_instance *instance,
|
|
struct orf_token *token,
|
|
unsigned int msgs_transmitted)
|
|
{
|
|
token->fcc += msgs_transmitted - instance->my_trc;
|
|
token->backlog += instance->my_cbl - instance->my_pbl;
|
|
instance->my_trc = msgs_transmitted;
|
|
instance->my_pbl = instance->my_cbl;
|
|
}
|
|
|
|
/*
|
|
* Message Handlers
|
|
*/
|
|
|
|
unsigned long long int tv_old;
|
|
/*
|
|
* message handler called when TOKEN message type received
|
|
*/
|
|
static int message_handler_orf_token (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
char token_storage[1500];
|
|
char token_convert[1500];
|
|
struct orf_token *token = NULL;
|
|
int forward_token;
|
|
unsigned int transmits_allowed;
|
|
unsigned int mcasted_retransmit;
|
|
unsigned int mcasted_regular;
|
|
unsigned int last_aru;
|
|
|
|
#ifdef GIVEINFO
|
|
unsigned long long tv_current;
|
|
unsigned long long tv_diff;
|
|
|
|
tv_current = timerlist_nano_current_get ();
|
|
tv_diff = tv_current - tv_old;
|
|
tv_old = tv_current;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Time since last token %0.4f ms\n", ((float)tv_diff) / 1000000.0);
|
|
#endif
|
|
|
|
#ifdef TEST_DROP_ORF_TOKEN_PERCENTAGE
|
|
if (random()%100 < TEST_DROP_ORF_TOKEN_PERCENTAGE) {
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
if (endian_conversion_needed) {
|
|
orf_token_endian_convert ((struct orf_token *)msg,
|
|
(struct orf_token *)token_convert);
|
|
msg = (struct orf_token *)token_convert;
|
|
}
|
|
|
|
/*
|
|
* Make copy of token and retransmit list in case we have
|
|
* to flush incoming messages from the kernel queue
|
|
*/
|
|
token = (struct orf_token *)token_storage;
|
|
memcpy (token, msg, sizeof (struct orf_token));
|
|
memcpy (&token->rtr_list[0], (char *)msg + sizeof (struct orf_token),
|
|
sizeof (struct rtr_item) * RETRANSMIT_ENTRIES_MAX);
|
|
|
|
|
|
/*
|
|
* Handle merge detection timeout
|
|
*/
|
|
if (token->seq == instance->my_last_seq) {
|
|
start_merge_detect_timeout (instance);
|
|
instance->my_seq_unchanged += 1;
|
|
} else {
|
|
cancel_merge_detect_timeout (instance);
|
|
cancel_token_hold_retransmit_timeout (instance);
|
|
instance->my_seq_unchanged = 0;
|
|
}
|
|
|
|
instance->my_last_seq = token->seq;
|
|
|
|
#ifdef TEST_RECOVERY_MSG_COUNT
|
|
if (instance->memb_state == MEMB_STATE_OPERATIONAL && token->seq > TEST_RECOVERY_MSG_COUNT) {
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
totemrrp_recv_flush (instance->totemrrp_context);
|
|
|
|
/*
|
|
* Determine if we should hold (in reality drop) the token
|
|
*/
|
|
instance->my_token_held = 0;
|
|
if (totemip_equal(&instance->my_ring_id.rep, &instance->my_id.addr[0]) &&
|
|
instance->my_seq_unchanged > instance->totem_config->seqno_unchanged_const) {
|
|
instance->my_token_held = 1;
|
|
} else
|
|
if (!totemip_equal(&instance->my_ring_id.rep, &instance->my_id.addr[0]) &&
|
|
instance->my_seq_unchanged >= instance->totem_config->seqno_unchanged_const) {
|
|
instance->my_token_held = 1;
|
|
}
|
|
|
|
/*
|
|
* Hold onto token when there is no activity on ring and
|
|
* this processor is the ring rep
|
|
*/
|
|
forward_token = 1;
|
|
if (totemip_equal(&instance->my_ring_id.rep, &instance->my_id.addr[0])) {
|
|
if (instance->my_token_held) {
|
|
forward_token = 0;
|
|
}
|
|
}
|
|
|
|
token_callbacks_execute (instance, TOTEM_CALLBACK_TOKEN_RECEIVED);
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_COMMIT:
|
|
/* Discard token */
|
|
break;
|
|
|
|
case MEMB_STATE_OPERATIONAL:
|
|
messages_free (instance, token->aru);
|
|
/*
|
|
* Do NOT add break, this case should also execute code in gather case.
|
|
*/
|
|
|
|
case MEMB_STATE_GATHER:
|
|
/*
|
|
* DO NOT add break, we use different free mechanism in recovery state
|
|
*/
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
/*
|
|
* Discard tokens from another configuration
|
|
*/
|
|
if (memcmp (&token->ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id)) != 0) {
|
|
|
|
if ((forward_token)
|
|
&& instance->use_heartbeat) {
|
|
reset_heartbeat_timeout(instance);
|
|
}
|
|
else {
|
|
cancel_heartbeat_timeout(instance);
|
|
}
|
|
|
|
return (0); /* discard token */
|
|
}
|
|
|
|
/*
|
|
* Discard retransmitted tokens
|
|
*/
|
|
if (sq_lte_compare (token->token_seq, instance->my_token_seq)) {
|
|
return (0); /* discard token */
|
|
}
|
|
last_aru = instance->my_last_aru;
|
|
instance->my_last_aru = token->aru;
|
|
|
|
transmits_allowed = fcc_calculate (instance, token);
|
|
mcasted_retransmit = orf_token_rtr (instance, token, &transmits_allowed);
|
|
|
|
fcc_rtr_limit (instance, token, &transmits_allowed);
|
|
mcasted_regular = orf_token_mcast (instance, token, transmits_allowed);
|
|
/*
|
|
if (mcasted_regular) {
|
|
printf ("mcasted regular %d\n", mcasted_regular);
|
|
printf ("token seq %d\n", token->seq);
|
|
}
|
|
*/
|
|
fcc_token_update (instance, token, mcasted_retransmit +
|
|
mcasted_regular);
|
|
|
|
if (sq_lt_compare (instance->my_aru, token->aru) ||
|
|
instance->my_id.addr[0].nodeid == token->aru_addr ||
|
|
token->aru_addr == 0) {
|
|
|
|
token->aru = instance->my_aru;
|
|
if (token->aru == token->seq) {
|
|
token->aru_addr = 0;
|
|
} else {
|
|
token->aru_addr = instance->my_id.addr[0].nodeid;
|
|
}
|
|
}
|
|
if (token->aru == last_aru && token->aru_addr != 0) {
|
|
instance->my_aru_count += 1;
|
|
} else {
|
|
instance->my_aru_count = 0;
|
|
}
|
|
|
|
if (instance->my_aru_count > instance->totem_config->fail_to_recv_const &&
|
|
token->aru_addr == instance->my_id.addr[0].nodeid) {
|
|
|
|
log_printf (instance->totemsrp_log_level_error,
|
|
"FAILED TO RECEIVE\n");
|
|
|
|
instance->failed_to_recv = 1;
|
|
|
|
memb_set_merge (&instance->my_id, 1,
|
|
instance->my_failed_list,
|
|
&instance->my_failed_list_entries);
|
|
|
|
memb_state_gather_enter (instance, 6);
|
|
} else {
|
|
instance->my_token_seq = token->token_seq;
|
|
token->token_seq += 1;
|
|
|
|
if (instance->memb_state == MEMB_STATE_RECOVERY) {
|
|
/*
|
|
* instance->my_aru == instance->my_high_seq_received means this processor
|
|
* has recovered all messages it can recover
|
|
* (ie: its retrans queue is empty)
|
|
*/
|
|
if (cs_queue_is_empty (&instance->retrans_message_queue) == 0) {
|
|
|
|
if (token->retrans_flg == 0) {
|
|
token->retrans_flg = 1;
|
|
instance->my_set_retrans_flg = 1;
|
|
}
|
|
} else
|
|
if (token->retrans_flg == 1 && instance->my_set_retrans_flg) {
|
|
token->retrans_flg = 0;
|
|
instance->my_set_retrans_flg = 0;
|
|
}
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"token retrans flag is %d my set retrans flag%d retrans queue empty %d count %d, aru %x\n",
|
|
token->retrans_flg, instance->my_set_retrans_flg,
|
|
cs_queue_is_empty (&instance->retrans_message_queue),
|
|
instance->my_retrans_flg_count, token->aru);
|
|
if (token->retrans_flg == 0) {
|
|
instance->my_retrans_flg_count += 1;
|
|
} else {
|
|
instance->my_retrans_flg_count = 0;
|
|
}
|
|
if (instance->my_retrans_flg_count == 2) {
|
|
instance->my_install_seq = token->seq;
|
|
}
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"install seq %x aru %x high seq received %x\n",
|
|
instance->my_install_seq, instance->my_aru, instance->my_high_seq_received);
|
|
if (instance->my_retrans_flg_count >= 2 &&
|
|
instance->my_received_flg == 0 &&
|
|
sq_lte_compare (instance->my_install_seq, instance->my_aru)) {
|
|
instance->my_received_flg = 1;
|
|
instance->my_deliver_memb_entries = instance->my_trans_memb_entries;
|
|
memcpy (instance->my_deliver_memb_list, instance->my_trans_memb_list,
|
|
sizeof (struct totem_ip_address) * instance->my_trans_memb_entries);
|
|
}
|
|
if (instance->my_retrans_flg_count >= 3 &&
|
|
sq_lte_compare (instance->my_install_seq, token->aru)) {
|
|
instance->my_rotation_counter += 1;
|
|
} else {
|
|
instance->my_rotation_counter = 0;
|
|
}
|
|
if (instance->my_rotation_counter == 2) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"retrans flag count %x token aru %x install seq %x aru %x %x\n",
|
|
instance->my_retrans_flg_count, token->aru, instance->my_install_seq,
|
|
instance->my_aru, token->seq);
|
|
|
|
memb_state_operational_enter (instance);
|
|
instance->my_rotation_counter = 0;
|
|
instance->my_retrans_flg_count = 0;
|
|
}
|
|
}
|
|
|
|
totemrrp_send_flush (instance->totemrrp_context);
|
|
token_send (instance, token, forward_token);
|
|
|
|
#ifdef GIVEINFO
|
|
tv_current = timerlist_nano_current_get ();
|
|
tv_diff = tv_current - tv_old;
|
|
tv_old = tv_current;
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"I held %0.4f ms\n",
|
|
((float)tv_diff) / 1000000.0);
|
|
#endif
|
|
if (instance->memb_state == MEMB_STATE_OPERATIONAL) {
|
|
messages_deliver_to_app (instance, 0,
|
|
instance->my_high_seq_received);
|
|
}
|
|
|
|
/*
|
|
* Deliver messages after token has been transmitted
|
|
* to improve performance
|
|
*/
|
|
reset_token_timeout (instance); // REVIEWED
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
if (totemip_equal(&instance->my_id.addr[0], &instance->my_ring_id.rep) &&
|
|
instance->my_token_held == 1) {
|
|
|
|
start_token_hold_retransmit_timeout (instance);
|
|
}
|
|
|
|
token_callbacks_execute (instance, TOTEM_CALLBACK_TOKEN_SENT);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ((forward_token)
|
|
&& instance->use_heartbeat) {
|
|
reset_heartbeat_timeout(instance);
|
|
}
|
|
else {
|
|
cancel_heartbeat_timeout(instance);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void messages_deliver_to_app (
|
|
struct totemsrp_instance *instance,
|
|
int skip,
|
|
unsigned int end_point)
|
|
{
|
|
struct sort_queue_item *sort_queue_item_p;
|
|
unsigned int i;
|
|
int res;
|
|
struct mcast *mcast_in;
|
|
struct mcast mcast_header;
|
|
unsigned int range = 0;
|
|
int endian_conversion_required;
|
|
unsigned int my_high_delivered_stored = 0;
|
|
|
|
|
|
range = end_point - instance->my_high_delivered;
|
|
|
|
if (range) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Delivering %x to %x\n", instance->my_high_delivered,
|
|
end_point);
|
|
}
|
|
assert (range < QUEUE_RTR_ITEMS_SIZE_MAX);
|
|
my_high_delivered_stored = instance->my_high_delivered;
|
|
|
|
/*
|
|
* Deliver messages in order from rtr queue to pending delivery queue
|
|
*/
|
|
for (i = 1; i <= range; i++) {
|
|
|
|
void *ptr = 0;
|
|
|
|
/*
|
|
* If out of range of sort queue, stop assembly
|
|
*/
|
|
res = sq_in_range (&instance->regular_sort_queue,
|
|
my_high_delivered_stored + i);
|
|
if (res == 0) {
|
|
break;
|
|
}
|
|
|
|
res = sq_item_get (&instance->regular_sort_queue,
|
|
my_high_delivered_stored + i, &ptr);
|
|
/*
|
|
* If hole, stop assembly
|
|
*/
|
|
if (res != 0 && skip == 0) {
|
|
break;
|
|
}
|
|
|
|
instance->my_high_delivered = my_high_delivered_stored + i;
|
|
|
|
if (res != 0) {
|
|
continue;
|
|
|
|
}
|
|
|
|
sort_queue_item_p = ptr;
|
|
|
|
mcast_in = sort_queue_item_p->mcast;
|
|
assert (mcast_in != (struct mcast *)0xdeadbeef);
|
|
|
|
endian_conversion_required = 0;
|
|
if (mcast_in->header.endian_detector != ENDIAN_LOCAL) {
|
|
endian_conversion_required = 1;
|
|
mcast_endian_convert (mcast_in, &mcast_header);
|
|
} else {
|
|
memcpy (&mcast_header, mcast_in, sizeof (struct mcast));
|
|
}
|
|
|
|
/*
|
|
* Skip messages not originated in instance->my_deliver_memb
|
|
*/
|
|
if (skip &&
|
|
memb_set_subset (&mcast_header.system_from,
|
|
1,
|
|
instance->my_deliver_memb_list,
|
|
instance->my_deliver_memb_entries) == 0) {
|
|
|
|
instance->my_high_delivered = my_high_delivered_stored + i;
|
|
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Message found
|
|
*/
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Delivering MCAST message with seq %x to pending delivery queue\n",
|
|
mcast_header.seq);
|
|
|
|
/*
|
|
* Message is locally originated multicast
|
|
*/
|
|
instance->totemsrp_deliver_fn (
|
|
mcast_header.header.nodeid,
|
|
((char *)sort_queue_item_p->mcast) + sizeof (struct mcast),
|
|
sort_queue_item_p->msg_len - sizeof (struct mcast),
|
|
endian_conversion_required);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* recv message handler called when MCAST message type received
|
|
*/
|
|
static int message_handler_mcast (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
struct sort_queue_item sort_queue_item;
|
|
struct sq *sort_queue;
|
|
struct mcast mcast_header;
|
|
|
|
|
|
if (endian_conversion_needed) {
|
|
mcast_endian_convert (msg, &mcast_header);
|
|
} else {
|
|
memcpy (&mcast_header, msg, sizeof (struct mcast));
|
|
}
|
|
|
|
if (mcast_header.header.encapsulated == MESSAGE_ENCAPSULATED) {
|
|
sort_queue = &instance->recovery_sort_queue;
|
|
} else {
|
|
sort_queue = &instance->regular_sort_queue;
|
|
}
|
|
|
|
assert (msg_len <= FRAME_SIZE_MAX);
|
|
|
|
#ifdef TEST_DROP_MCAST_PERCENTAGE
|
|
if (random()%100 < TEST_DROP_MCAST_PERCENTAGE) {
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* If the message is foreign execute the switch below
|
|
*/
|
|
if (memcmp (&instance->my_ring_id, &mcast_header.ring_id,
|
|
sizeof (struct memb_ring_id)) != 0) {
|
|
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
memb_set_merge (
|
|
&mcast_header.system_from, 1,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
memb_state_gather_enter (instance, 7);
|
|
break;
|
|
|
|
case MEMB_STATE_GATHER:
|
|
if (!memb_set_subset (
|
|
&mcast_header.system_from,
|
|
1,
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries)) {
|
|
|
|
memb_set_merge (&mcast_header.system_from, 1,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
memb_state_gather_enter (instance, 8);
|
|
return (0);
|
|
}
|
|
break;
|
|
|
|
case MEMB_STATE_COMMIT:
|
|
/* discard message */
|
|
instance->stats.rx_msg_dropped++;
|
|
break;
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
/* discard message */
|
|
instance->stats.rx_msg_dropped++;
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Received ringid(%s:%lld) seq %x\n",
|
|
totemip_print (&mcast_header.ring_id.rep),
|
|
mcast_header.ring_id.seq,
|
|
mcast_header.seq);
|
|
|
|
/*
|
|
* Add mcast message to rtr queue if not already in rtr queue
|
|
* otherwise free io vectors
|
|
*/
|
|
if (msg_len > 0 && msg_len <= FRAME_SIZE_MAX &&
|
|
sq_in_range (sort_queue, mcast_header.seq) &&
|
|
sq_item_inuse (sort_queue, mcast_header.seq) == 0) {
|
|
|
|
/*
|
|
* Allocate new multicast memory block
|
|
*/
|
|
// TODO LEAK
|
|
sort_queue_item.mcast = totemsrp_buffer_alloc (instance);
|
|
if (sort_queue_item.mcast == NULL) {
|
|
return (-1); /* error here is corrected by the algorithm */
|
|
}
|
|
memcpy (sort_queue_item.mcast, msg, msg_len);
|
|
sort_queue_item.msg_len = msg_len;
|
|
|
|
if (sq_lt_compare (instance->my_high_seq_received,
|
|
mcast_header.seq)) {
|
|
instance->my_high_seq_received = mcast_header.seq;
|
|
}
|
|
|
|
sq_item_add (sort_queue, &sort_queue_item, mcast_header.seq);
|
|
}
|
|
|
|
update_aru (instance);
|
|
if (instance->memb_state == MEMB_STATE_OPERATIONAL) {
|
|
messages_deliver_to_app (instance, 0, instance->my_high_seq_received);
|
|
}
|
|
|
|
/* TODO remove from retrans message queue for old ring in recovery state */
|
|
return (0);
|
|
}
|
|
|
|
static int message_handler_memb_merge_detect (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
struct memb_merge_detect memb_merge_detect;
|
|
|
|
|
|
if (endian_conversion_needed) {
|
|
memb_merge_detect_endian_convert (msg, &memb_merge_detect);
|
|
} else {
|
|
memcpy (&memb_merge_detect, msg,
|
|
sizeof (struct memb_merge_detect));
|
|
}
|
|
|
|
/*
|
|
* do nothing if this is a merge detect from this configuration
|
|
*/
|
|
if (memcmp (&instance->my_ring_id, &memb_merge_detect.ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Execute merge operation
|
|
*/
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
memb_set_merge (&memb_merge_detect.system_from, 1,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
memb_state_gather_enter (instance, 9);
|
|
break;
|
|
|
|
case MEMB_STATE_GATHER:
|
|
if (!memb_set_subset (
|
|
&memb_merge_detect.system_from,
|
|
1,
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries)) {
|
|
|
|
memb_set_merge (&memb_merge_detect.system_from, 1,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
memb_state_gather_enter (instance, 10);
|
|
return (0);
|
|
}
|
|
break;
|
|
|
|
case MEMB_STATE_COMMIT:
|
|
/* do nothing in commit */
|
|
break;
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
/* do nothing in recovery */
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void memb_join_process (
|
|
struct totemsrp_instance *instance,
|
|
const struct memb_join *memb_join)
|
|
{
|
|
struct srp_addr *proc_list;
|
|
struct srp_addr *failed_list;
|
|
int gather_entered = 0;
|
|
int fail_minus_memb_entries = 0;
|
|
struct srp_addr fail_minus_memb[PROCESSOR_COUNT_MAX];
|
|
|
|
proc_list = (struct srp_addr *)memb_join->end_of_memb_join;
|
|
failed_list = proc_list + memb_join->proc_list_entries;
|
|
|
|
/*
|
|
memb_set_print ("proclist", proc_list, memb_join->proc_list_entries);
|
|
memb_set_print ("faillist", failed_list, memb_join->failed_list_entries);
|
|
memb_set_print ("my_proclist", instance->my_proc_list, instance->my_proc_list_entries);
|
|
memb_set_print ("my_faillist", instance->my_failed_list, instance->my_failed_list_entries);
|
|
-*/
|
|
|
|
if (memb_set_equal (proc_list,
|
|
memb_join->proc_list_entries,
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries) &&
|
|
|
|
memb_set_equal (failed_list,
|
|
memb_join->failed_list_entries,
|
|
instance->my_failed_list,
|
|
instance->my_failed_list_entries)) {
|
|
|
|
memb_consensus_set (instance, &memb_join->system_from);
|
|
|
|
if (memb_consensus_agreed (instance) && instance->failed_to_recv == 1) {
|
|
instance->failed_to_recv = 0;
|
|
srp_addr_copy (&instance->my_proc_list[0],
|
|
&instance->my_id);
|
|
instance->my_proc_list_entries = 1;
|
|
instance->my_failed_list_entries = 0;
|
|
|
|
memb_state_commit_token_create (instance);
|
|
|
|
memb_state_commit_enter (instance);
|
|
return;
|
|
}
|
|
if (memb_consensus_agreed (instance) &&
|
|
memb_lowest_in_config (instance)) {
|
|
|
|
memb_state_commit_token_create (instance);
|
|
|
|
memb_state_commit_enter (instance);
|
|
} else {
|
|
return;
|
|
}
|
|
} else
|
|
if (memb_set_subset (proc_list,
|
|
memb_join->proc_list_entries,
|
|
instance->my_proc_list,
|
|
instance->my_proc_list_entries) &&
|
|
|
|
memb_set_subset (failed_list,
|
|
memb_join->failed_list_entries,
|
|
instance->my_failed_list,
|
|
instance->my_failed_list_entries)) {
|
|
|
|
return;
|
|
} else
|
|
if (memb_set_subset (&memb_join->system_from, 1,
|
|
instance->my_failed_list, instance->my_failed_list_entries)) {
|
|
|
|
return;
|
|
} else {
|
|
memb_set_merge (proc_list,
|
|
memb_join->proc_list_entries,
|
|
instance->my_proc_list, &instance->my_proc_list_entries);
|
|
|
|
if (memb_set_subset (
|
|
&instance->my_id, 1,
|
|
failed_list, memb_join->failed_list_entries)) {
|
|
|
|
memb_set_merge (
|
|
&memb_join->system_from, 1,
|
|
instance->my_failed_list, &instance->my_failed_list_entries);
|
|
} else {
|
|
if (memb_set_subset (
|
|
&memb_join->system_from, 1,
|
|
instance->my_memb_list,
|
|
instance->my_memb_entries)) {
|
|
|
|
if (memb_set_subset (
|
|
&memb_join->system_from, 1,
|
|
instance->my_failed_list,
|
|
instance->my_failed_list_entries) == 0) {
|
|
|
|
memb_set_merge (failed_list,
|
|
memb_join->failed_list_entries,
|
|
instance->my_failed_list, &instance->my_failed_list_entries);
|
|
} else {
|
|
memb_set_subtract (fail_minus_memb,
|
|
&fail_minus_memb_entries,
|
|
failed_list,
|
|
memb_join->failed_list_entries,
|
|
instance->my_memb_list,
|
|
instance->my_memb_entries);
|
|
|
|
memb_set_merge (fail_minus_memb,
|
|
fail_minus_memb_entries,
|
|
instance->my_failed_list,
|
|
&instance->my_failed_list_entries);
|
|
}
|
|
}
|
|
}
|
|
memb_state_gather_enter (instance, 11);
|
|
gather_entered = 1;
|
|
}
|
|
if (gather_entered == 0 &&
|
|
instance->memb_state == MEMB_STATE_OPERATIONAL) {
|
|
|
|
memb_state_gather_enter (instance, 12);
|
|
}
|
|
}
|
|
|
|
static void memb_join_endian_convert (const struct memb_join *in, struct memb_join *out)
|
|
{
|
|
int i;
|
|
struct srp_addr *in_proc_list;
|
|
struct srp_addr *in_failed_list;
|
|
struct srp_addr *out_proc_list;
|
|
struct srp_addr *out_failed_list;
|
|
|
|
out->header.type = in->header.type;
|
|
out->header.endian_detector = ENDIAN_LOCAL;
|
|
out->header.nodeid = swab32 (in->header.nodeid);
|
|
srp_addr_copy_endian_convert (&out->system_from, &in->system_from);
|
|
out->proc_list_entries = swab32 (in->proc_list_entries);
|
|
out->failed_list_entries = swab32 (in->failed_list_entries);
|
|
out->ring_seq = swab64 (in->ring_seq);
|
|
|
|
in_proc_list = (struct srp_addr *)in->end_of_memb_join;
|
|
in_failed_list = in_proc_list + out->proc_list_entries;
|
|
out_proc_list = (struct srp_addr *)out->end_of_memb_join;
|
|
out_failed_list = out_proc_list + out->proc_list_entries;
|
|
|
|
for (i = 0; i < out->proc_list_entries; i++) {
|
|
srp_addr_copy_endian_convert (&out_proc_list[i], &in_proc_list[i]);
|
|
}
|
|
for (i = 0; i < out->failed_list_entries; i++) {
|
|
srp_addr_copy_endian_convert (&out_failed_list[i], &in_failed_list[i]);
|
|
}
|
|
}
|
|
|
|
static void memb_commit_token_endian_convert (const struct memb_commit_token *in, struct memb_commit_token *out)
|
|
{
|
|
int i;
|
|
struct srp_addr *in_addr = (struct srp_addr *)in->end_of_commit_token;
|
|
struct srp_addr *out_addr = (struct srp_addr *)out->end_of_commit_token;
|
|
struct memb_commit_token_memb_entry *in_memb_list;
|
|
struct memb_commit_token_memb_entry *out_memb_list;
|
|
|
|
out->header.type = in->header.type;
|
|
out->header.endian_detector = ENDIAN_LOCAL;
|
|
out->header.nodeid = swab32 (in->header.nodeid);
|
|
out->token_seq = swab32 (in->token_seq);
|
|
totemip_copy_endian_convert(&out->ring_id.rep, &in->ring_id.rep);
|
|
out->ring_id.seq = swab64 (in->ring_id.seq);
|
|
out->retrans_flg = swab32 (in->retrans_flg);
|
|
out->memb_index = swab32 (in->memb_index);
|
|
out->addr_entries = swab32 (in->addr_entries);
|
|
|
|
in_memb_list = (struct memb_commit_token_memb_entry *)(in_addr + out->addr_entries);
|
|
out_memb_list = (struct memb_commit_token_memb_entry *)(out_addr + out->addr_entries);
|
|
for (i = 0; i < out->addr_entries; i++) {
|
|
srp_addr_copy_endian_convert (&out_addr[i], &in_addr[i]);
|
|
|
|
/*
|
|
* Only convert the memb entry if it has been set
|
|
*/
|
|
if (in_memb_list[i].ring_id.rep.family != 0) {
|
|
totemip_copy_endian_convert (&out_memb_list[i].ring_id.rep,
|
|
&in_memb_list[i].ring_id.rep);
|
|
|
|
out_memb_list[i].ring_id.seq =
|
|
swab64 (in_memb_list[i].ring_id.seq);
|
|
out_memb_list[i].aru = swab32 (in_memb_list[i].aru);
|
|
out_memb_list[i].high_delivered = swab32 (in_memb_list[i].high_delivered);
|
|
out_memb_list[i].received_flg = swab32 (in_memb_list[i].received_flg);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void orf_token_endian_convert (const struct orf_token *in, struct orf_token *out)
|
|
{
|
|
int i;
|
|
|
|
out->header.type = in->header.type;
|
|
out->header.endian_detector = ENDIAN_LOCAL;
|
|
out->header.nodeid = swab32 (in->header.nodeid);
|
|
out->seq = swab32 (in->seq);
|
|
out->token_seq = swab32 (in->token_seq);
|
|
out->aru = swab32 (in->aru);
|
|
totemip_copy_endian_convert(&out->ring_id.rep, &in->ring_id.rep);
|
|
out->aru_addr = swab32(in->aru_addr);
|
|
out->ring_id.seq = swab64 (in->ring_id.seq);
|
|
out->fcc = swab32 (in->fcc);
|
|
out->backlog = swab32 (in->backlog);
|
|
out->retrans_flg = swab32 (in->retrans_flg);
|
|
out->rtr_list_entries = swab32 (in->rtr_list_entries);
|
|
for (i = 0; i < out->rtr_list_entries; i++) {
|
|
totemip_copy_endian_convert(&out->rtr_list[i].ring_id.rep, &in->rtr_list[i].ring_id.rep);
|
|
out->rtr_list[i].ring_id.seq = swab64 (in->rtr_list[i].ring_id.seq);
|
|
out->rtr_list[i].seq = swab32 (in->rtr_list[i].seq);
|
|
}
|
|
}
|
|
|
|
static void mcast_endian_convert (const struct mcast *in, struct mcast *out)
|
|
{
|
|
out->header.type = in->header.type;
|
|
out->header.endian_detector = ENDIAN_LOCAL;
|
|
out->header.nodeid = swab32 (in->header.nodeid);
|
|
out->header.encapsulated = in->header.encapsulated;
|
|
|
|
out->seq = swab32 (in->seq);
|
|
out->this_seqno = swab32 (in->this_seqno);
|
|
totemip_copy_endian_convert(&out->ring_id.rep, &in->ring_id.rep);
|
|
out->ring_id.seq = swab64 (in->ring_id.seq);
|
|
out->node_id = swab32 (in->node_id);
|
|
out->guarantee = swab32 (in->guarantee);
|
|
srp_addr_copy_endian_convert (&out->system_from, &in->system_from);
|
|
}
|
|
|
|
static void memb_merge_detect_endian_convert (
|
|
const struct memb_merge_detect *in,
|
|
struct memb_merge_detect *out)
|
|
{
|
|
out->header.type = in->header.type;
|
|
out->header.endian_detector = ENDIAN_LOCAL;
|
|
out->header.nodeid = swab32 (in->header.nodeid);
|
|
totemip_copy_endian_convert(&out->ring_id.rep, &in->ring_id.rep);
|
|
out->ring_id.seq = swab64 (in->ring_id.seq);
|
|
srp_addr_copy_endian_convert (&out->system_from, &in->system_from);
|
|
}
|
|
|
|
static int message_handler_memb_join (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
const struct memb_join *memb_join;
|
|
struct memb_join *memb_join_convert = alloca (msg_len);
|
|
|
|
if (endian_conversion_needed) {
|
|
memb_join = memb_join_convert;
|
|
memb_join_endian_convert (msg, memb_join_convert);
|
|
|
|
} else {
|
|
memb_join = msg;
|
|
}
|
|
/*
|
|
* If the process paused because it wasn't scheduled in a timely
|
|
* fashion, flush the join messages because they may be queued
|
|
* entries
|
|
*/
|
|
if (pause_flush (instance)) {
|
|
return (0);
|
|
}
|
|
|
|
if (instance->token_ring_id_seq < memb_join->ring_seq) {
|
|
instance->token_ring_id_seq = memb_join->ring_seq;
|
|
}
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
memb_join_process (instance, memb_join);
|
|
break;
|
|
|
|
case MEMB_STATE_GATHER:
|
|
memb_join_process (instance, memb_join);
|
|
break;
|
|
|
|
case MEMB_STATE_COMMIT:
|
|
if (memb_set_subset (&memb_join->system_from,
|
|
1,
|
|
instance->my_new_memb_list,
|
|
instance->my_new_memb_entries) &&
|
|
|
|
memb_join->ring_seq >= instance->my_ring_id.seq) {
|
|
|
|
memb_join_process (instance, memb_join);
|
|
memb_state_gather_enter (instance, 13);
|
|
}
|
|
break;
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
if (memb_set_subset (&memb_join->system_from,
|
|
1,
|
|
instance->my_new_memb_list,
|
|
instance->my_new_memb_entries) &&
|
|
|
|
memb_join->ring_seq >= instance->my_ring_id.seq) {
|
|
|
|
memb_join_process (instance, memb_join);
|
|
memb_recovery_state_token_loss (instance);
|
|
memb_state_gather_enter (instance, 14);
|
|
}
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int message_handler_memb_commit_token (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
struct memb_commit_token *memb_commit_token_convert = alloca (msg_len);
|
|
struct memb_commit_token *memb_commit_token;
|
|
struct srp_addr sub[PROCESSOR_COUNT_MAX];
|
|
int sub_entries;
|
|
|
|
struct srp_addr *addr;
|
|
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"got commit token\n");
|
|
|
|
if (endian_conversion_needed) {
|
|
memb_commit_token_endian_convert (msg, memb_commit_token_convert);
|
|
} else {
|
|
memcpy (memb_commit_token_convert, msg, msg_len);
|
|
}
|
|
memb_commit_token = memb_commit_token_convert;
|
|
addr = (struct srp_addr *)memb_commit_token->end_of_commit_token;
|
|
|
|
#ifdef TEST_DROP_COMMIT_TOKEN_PERCENTAGE
|
|
if (random()%100 < TEST_DROP_COMMIT_TOKEN_PERCENTAGE) {
|
|
return (0);
|
|
}
|
|
#endif
|
|
switch (instance->memb_state) {
|
|
case MEMB_STATE_OPERATIONAL:
|
|
/* discard token */
|
|
break;
|
|
|
|
case MEMB_STATE_GATHER:
|
|
memb_set_subtract (sub, &sub_entries,
|
|
instance->my_proc_list, instance->my_proc_list_entries,
|
|
instance->my_failed_list, instance->my_failed_list_entries);
|
|
|
|
if (memb_set_equal (addr,
|
|
memb_commit_token->addr_entries,
|
|
sub,
|
|
sub_entries) &&
|
|
|
|
memb_commit_token->ring_id.seq > instance->my_ring_id.seq) {
|
|
memcpy (instance->commit_token, memb_commit_token, msg_len);
|
|
memb_state_commit_enter (instance);
|
|
}
|
|
break;
|
|
|
|
case MEMB_STATE_COMMIT:
|
|
/*
|
|
* If retransmitted commit tokens are sent on this ring
|
|
* filter them out and only enter recovery once the
|
|
* commit token has traversed the array. This is
|
|
* determined by :
|
|
* memb_commit_token->memb_index == memb_commit_token->addr_entries) {
|
|
*/
|
|
if (memb_commit_token->ring_id.seq == instance->my_ring_id.seq &&
|
|
memb_commit_token->memb_index == memb_commit_token->addr_entries) {
|
|
memb_state_recovery_enter (instance, memb_commit_token);
|
|
}
|
|
break;
|
|
|
|
case MEMB_STATE_RECOVERY:
|
|
if (totemip_equal (&instance->my_id.addr[0], &instance->my_ring_id.rep)) {
|
|
log_printf (instance->totemsrp_log_level_debug,
|
|
"Sending initial ORF token\n");
|
|
|
|
// TODO convert instead of initiate
|
|
orf_token_send_initial (instance);
|
|
reset_token_timeout (instance); // REVIEWED
|
|
reset_token_retransmit_timeout (instance); // REVIEWED
|
|
}
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int message_handler_token_hold_cancel (
|
|
struct totemsrp_instance *instance,
|
|
const void *msg,
|
|
size_t msg_len,
|
|
int endian_conversion_needed)
|
|
{
|
|
const struct token_hold_cancel *token_hold_cancel = msg;
|
|
|
|
if (memcmp (&token_hold_cancel->ring_id, &instance->my_ring_id,
|
|
sizeof (struct memb_ring_id)) == 0) {
|
|
|
|
instance->my_seq_unchanged = 0;
|
|
if (totemip_equal(&instance->my_ring_id.rep, &instance->my_id.addr[0])) {
|
|
timer_function_token_retransmit_timeout (instance);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void main_deliver_fn (
|
|
void *context,
|
|
const void *msg,
|
|
unsigned int msg_len)
|
|
{
|
|
struct totemsrp_instance *instance = context;
|
|
const struct message_header *message_header = msg;
|
|
|
|
if (msg_len < sizeof (struct message_header)) {
|
|
log_printf (instance->totemsrp_log_level_security,
|
|
"Received message is too short... ignoring %u.\n",
|
|
(unsigned int)msg_len);
|
|
return;
|
|
}
|
|
|
|
if ((int)message_header->type >= totemsrp_message_handlers.count) {
|
|
log_printf (instance->totemsrp_log_level_security, "Type of received message is wrong... ignoring %d.\n", (int)message_header->type);
|
|
printf ("wrong message type\n");
|
|
instance->stats.rx_msg_dropped++;
|
|
return;
|
|
}
|
|
|
|
switch (message_header->type) {
|
|
case MESSAGE_TYPE_ORF_TOKEN:
|
|
instance->stats.orf_token_rx++;
|
|
break;
|
|
case MESSAGE_TYPE_MCAST:
|
|
instance->stats.mcast_rx++;
|
|
break;
|
|
case MESSAGE_TYPE_MEMB_MERGE_DETECT:
|
|
instance->stats.memb_merge_detect_rx++;
|
|
break;
|
|
case MESSAGE_TYPE_MEMB_JOIN:
|
|
instance->stats.memb_join_rx++;
|
|
break;
|
|
case MESSAGE_TYPE_MEMB_COMMIT_TOKEN:
|
|
instance->stats.memb_commit_token_rx++;
|
|
break;
|
|
case MESSAGE_TYPE_TOKEN_HOLD_CANCEL:
|
|
instance->stats.token_hold_cancel_rx++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/*
|
|
* Handle incoming message
|
|
*/
|
|
totemsrp_message_handlers.handler_functions[(int)message_header->type] (
|
|
instance,
|
|
msg,
|
|
msg_len,
|
|
message_header->endian_detector != ENDIAN_LOCAL);
|
|
}
|
|
|
|
void main_iface_change_fn (
|
|
void *context,
|
|
const struct totem_ip_address *iface_addr,
|
|
unsigned int iface_no)
|
|
{
|
|
struct totemsrp_instance *instance = context;
|
|
int i;
|
|
|
|
totemip_copy (&instance->my_id.addr[iface_no], iface_addr);
|
|
assert (instance->my_id.addr[iface_no].nodeid);
|
|
|
|
totemip_copy (&instance->my_memb_list[0].addr[iface_no], iface_addr);
|
|
|
|
if (instance->iface_changes++ == 0) {
|
|
memb_ring_id_create_or_load (instance, &instance->my_ring_id);
|
|
log_printf (
|
|
instance->totemsrp_log_level_debug,
|
|
"Created or loaded sequence id %lld.%s for this ring.\n",
|
|
instance->my_ring_id.seq,
|
|
totemip_print (&instance->my_ring_id.rep));
|
|
for (i = 0; i < instance->totem_config->interfaces[iface_no].member_count; i++) {
|
|
totemsrp_member_add (instance,
|
|
&instance->totem_config->interfaces[iface_no].member_list[i],
|
|
iface_no);
|
|
|
|
}
|
|
if (instance->totemsrp_service_ready_fn) {
|
|
instance->totemsrp_service_ready_fn ();
|
|
}
|
|
|
|
}
|
|
if (instance->iface_changes >= instance->totem_config->interface_count) {
|
|
memb_state_gather_enter (instance, 15);
|
|
}
|
|
}
|
|
|
|
void totemsrp_net_mtu_adjust (struct totem_config *totem_config) {
|
|
totem_config->net_mtu -= sizeof (struct mcast);
|
|
}
|
|
|
|
void totemsrp_service_ready_register (
|
|
void *context,
|
|
void (*totem_service_ready) (void))
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)context;
|
|
|
|
instance->totemsrp_service_ready_fn = totem_service_ready;
|
|
}
|
|
|
|
int totemsrp_member_add (
|
|
void *context,
|
|
const struct totem_ip_address *member,
|
|
int ring_no)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)context;
|
|
int res;
|
|
|
|
res = totemrrp_member_add (instance->totemrrp_context, member, ring_no);
|
|
|
|
return (res);
|
|
}
|
|
|
|
int totemsrp_member_remove (
|
|
void *context,
|
|
const struct totem_ip_address *member,
|
|
int ring_no)
|
|
{
|
|
struct totemsrp_instance *instance = (struct totemsrp_instance *)context;
|
|
int res;
|
|
|
|
res = totemrrp_member_remove (instance->totemrrp_context, member, ring_no);
|
|
|
|
return (res);
|
|
}
|