diff --git a/exec/totemsrp.c b/exec/totemsrp.c index 692e1f12..b55a156c 100644 --- a/exec/totemsrp.c +++ b/exec/totemsrp.c @@ -1,5197 +1,5236 @@ /* * Copyright (c) 2003-2006 MontaVista Software, Inc. * Copyright (c) 2006-2018 Red Hat, Inc. * * All rights reserved. * * Author: Steven Dake (sdake@redhat.com) * * This software licensed under BSD license, the text of which follows: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - Neither the name of the MontaVista Software, Inc. nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ /* * The first version of this code was based upon Yair Amir's PhD thesis: * http://www.cs.jhu.edu/~yairamir/phd.ps) (ch4,5). * * The current version of totemsrp implements the Totem protocol specified in: * http://citeseer.ist.psu.edu/amir95totem.html * * The deviations from the above published protocols are: * - token hold mode where token doesn't rotate on unused ring - reduces cpu * usage on 1.6ghz xeon from 35% to less then .1 % as measured by top */ #include #include #ifdef HAVE_ALLOCA_H #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define LOGSYS_UTILS_ONLY 1 #include #include "totemsrp.h" #include "totemnet.h" #include "cs_queue.h" #define LOCALHOST_IP inet_addr("127.0.0.1") #define QUEUE_RTR_ITEMS_SIZE_MAX 16384 /* allow 16384 retransmit items */ #define RETRANS_MESSAGE_QUEUE_SIZE_MAX 16384 /* allow 500 messages to be queued */ #define RECEIVED_MESSAGE_QUEUE_SIZE_MAX 500 /* allow 500 messages to be queued */ #define MAXIOVS 5 #define RETRANSMIT_ENTRIES_MAX 30 #define TOKEN_SIZE_MAX 64000 /* bytes */ #define LEAVE_DUMMY_NODEID 0 /* * SRP address. */ struct srp_addr { unsigned int nodeid; }; /* * Rollover handling: * SEQNO_START_MSG is the starting sequence number after a new configuration * This should remain zero, unless testing overflow in which case * 0x7ffff000 and 0xfffff000 are good starting values. * * SEQNO_START_TOKEN is the starting sequence number after a new configuration * for a token. This should remain zero, unless testing overflow in which * case 07fffff00 or 0xffffff00 are good starting values. */ #define SEQNO_START_MSG 0x0 #define SEQNO_START_TOKEN 0x0 /* * These can be used ot test different rollover points * #define SEQNO_START_MSG 0xfffffe00 * #define SEQNO_START_TOKEN 0xfffffe00 */ /* * These can be used to test the error recovery algorithms * #define TEST_DROP_ORF_TOKEN_PERCENTAGE 30 * #define TEST_DROP_COMMIT_TOKEN_PERCENTAGE 30 * #define TEST_DROP_MCAST_PERCENTAGE 50 * #define TEST_RECOVERY_MSG_COUNT 300 */ /* * we compare incoming messages to determine if their endian is * different - if so convert them * * do not change */ #define ENDIAN_LOCAL 0xff22 enum message_type { MESSAGE_TYPE_ORF_TOKEN = 0, /* Ordering, Reliability, Flow (ORF) control Token */ MESSAGE_TYPE_MCAST = 1, /* ring ordered multicast message */ MESSAGE_TYPE_MEMB_MERGE_DETECT = 2, /* merge rings if there are available rings */ MESSAGE_TYPE_MEMB_JOIN = 3, /* membership join message */ MESSAGE_TYPE_MEMB_COMMIT_TOKEN = 4, /* membership commit token */ MESSAGE_TYPE_TOKEN_HOLD_CANCEL = 5, /* cancel the holding of the token */ }; enum encapsulation_type { MESSAGE_ENCAPSULATED = 1, MESSAGE_NOT_ENCAPSULATED = 2 }; /* * New membership algorithm local variables */ struct consensus_list_item { struct srp_addr addr; int set; }; struct token_callback_instance { struct qb_list_head list; int (*callback_fn) (enum totem_callback_token_type type, const void *); enum totem_callback_token_type callback_type; int delete; void *data; }; struct totemsrp_socket { int mcast; int token; }; struct mcast { struct totem_message_header header; struct srp_addr system_from; unsigned int seq; int this_seqno; struct memb_ring_id ring_id; unsigned int node_id; int guarantee; } __attribute__((packed)); struct rtr_item { struct memb_ring_id ring_id; unsigned int seq; }__attribute__((packed)); struct orf_token { struct totem_message_header header; unsigned int seq; unsigned int token_seq; unsigned int aru; unsigned int aru_addr; struct memb_ring_id ring_id; unsigned int backlog; unsigned int fcc; int retrans_flg; int rtr_list_entries; struct rtr_item rtr_list[0]; }__attribute__((packed)); struct memb_join { struct totem_message_header header; struct srp_addr system_from; unsigned int proc_list_entries; unsigned int failed_list_entries; unsigned long long ring_seq; unsigned char end_of_memb_join[0]; /* * These parts of the data structure are dynamic: * struct srp_addr proc_list[]; * struct srp_addr failed_list[]; */ } __attribute__((packed)); struct memb_merge_detect { struct totem_message_header header; struct srp_addr system_from; struct memb_ring_id ring_id; } __attribute__((packed)); struct token_hold_cancel { struct totem_message_header header; struct memb_ring_id ring_id; } __attribute__((packed)); struct memb_commit_token_memb_entry { struct memb_ring_id ring_id; unsigned int aru; unsigned int high_delivered; unsigned int received_flg; }__attribute__((packed)); struct memb_commit_token { struct totem_message_header header; unsigned int token_seq; struct memb_ring_id ring_id; unsigned int retrans_flg; int memb_index; int addr_entries; unsigned char end_of_commit_token[0]; /* * These parts of the data structure are dynamic: * * struct srp_addr addr[PROCESSOR_COUNT_MAX]; * struct memb_commit_token_memb_entry memb_list[PROCESSOR_COUNT_MAX]; */ }__attribute__((packed)); struct message_item { struct mcast *mcast; unsigned int msg_len; }; struct sort_queue_item { struct mcast *mcast; unsigned int msg_len; }; enum memb_state { MEMB_STATE_OPERATIONAL = 1, MEMB_STATE_GATHER = 2, MEMB_STATE_COMMIT = 3, MEMB_STATE_RECOVERY = 4 }; struct totemsrp_instance { int iface_changes; int failed_to_recv; /* * Flow control mcasts and remcasts on last and current orf_token */ int fcc_remcast_last; int fcc_mcast_last; int fcc_remcast_current; struct consensus_list_item consensus_list[PROCESSOR_COUNT_MAX]; int consensus_list_entries; int lowest_active_if; struct srp_addr my_id; struct totem_ip_address my_addrs[INTERFACE_MAX]; struct srp_addr my_proc_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_failed_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_new_memb_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_trans_memb_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_memb_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_deliver_memb_list[PROCESSOR_COUNT_MAX]; struct srp_addr my_left_memb_list[PROCESSOR_COUNT_MAX]; unsigned int my_leave_memb_list[PROCESSOR_COUNT_MAX]; int my_proc_list_entries; int my_failed_list_entries; int my_new_memb_entries; int my_trans_memb_entries; int my_memb_entries; int my_deliver_memb_entries; int my_left_memb_entries; int my_leave_memb_entries; struct memb_ring_id my_ring_id; struct memb_ring_id my_old_ring_id; int my_aru_count; int my_merge_detect_timeout_outstanding; unsigned int my_last_aru; int my_seq_unchanged; int my_received_flg; unsigned int my_high_seq_received; unsigned int my_install_seq; int my_rotation_counter; int my_set_retrans_flg; int my_retrans_flg_count; unsigned int my_high_ring_delivered; int heartbeat_timeout; /* * Queues used to order, deliver, and recover messages */ struct cs_queue new_message_queue; struct cs_queue new_message_queue_trans; struct cs_queue retrans_message_queue; struct sq regular_sort_queue; struct sq recovery_sort_queue; /* * Received up to and including */ unsigned int my_aru; unsigned int my_high_delivered; struct qb_list_head token_callback_received_listhead; struct qb_list_head token_callback_sent_listhead; char orf_token_retransmit[TOKEN_SIZE_MAX]; int orf_token_retransmit_size; unsigned int my_token_seq; /* * Timers */ qb_loop_timer_handle timer_pause_timeout; qb_loop_timer_handle timer_orf_token_timeout; qb_loop_timer_handle timer_orf_token_warning; qb_loop_timer_handle timer_orf_token_retransmit_timeout; qb_loop_timer_handle timer_orf_token_hold_retransmit_timeout; qb_loop_timer_handle timer_merge_detect_timeout; qb_loop_timer_handle memb_timer_state_gather_join_timeout; qb_loop_timer_handle memb_timer_state_gather_consensus_timeout; qb_loop_timer_handle memb_timer_state_commit_timeout; qb_loop_timer_handle timer_heartbeat_timeout; /* * Function and data used to log messages */ int totemsrp_log_level_security; int totemsrp_log_level_error; int totemsrp_log_level_warning; int totemsrp_log_level_notice; int totemsrp_log_level_debug; int totemsrp_log_level_trace; int totemsrp_subsys_id; void (*totemsrp_log_printf) ( int level, int subsys, const char *function, const char *file, int line, const char *format, ...)__attribute__((format(printf, 6, 7)));; enum memb_state memb_state; //TODO struct srp_addr next_memb; qb_loop_t *totemsrp_poll_handle; struct totem_ip_address mcast_address; void (*totemsrp_deliver_fn) ( unsigned int nodeid, const void *msg, unsigned int msg_len, int endian_conversion_required); void (*totemsrp_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); void (*totemsrp_service_ready_fn) (void); void (*totemsrp_waiting_trans_ack_cb_fn) ( int waiting_trans_ack); void (*memb_ring_id_create_or_load) ( struct memb_ring_id *memb_ring_id, unsigned int nodeid); void (*memb_ring_id_store) ( const struct memb_ring_id *memb_ring_id, unsigned int nodeid); int global_seqno; int my_token_held; unsigned long long token_ring_id_seq; unsigned int last_released; unsigned int set_aru; int old_ring_state_saved; int old_ring_state_aru; unsigned int old_ring_state_high_seq_received; unsigned int my_last_seq; struct timeval tv_old; void *totemnet_context; struct totem_config *totem_config; unsigned int use_heartbeat; unsigned int my_trc; unsigned int my_pbl; unsigned int my_cbl; uint64_t pause_timestamp; struct memb_commit_token *commit_token; totemsrp_stats_t stats; uint32_t orf_token_discard; uint32_t originated_orf_token; uint32_t threaded_mode_enabled; uint32_t waiting_trans_ack; int flushing; void * token_recv_event_handle; void * token_sent_event_handle; char commit_token_storage[40000]; }; struct message_handlers { int count; int (*handler_functions[6]) ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); }; enum gather_state_from { TOTEMSRP_GSFROM_CONSENSUS_TIMEOUT = 0, TOTEMSRP_GSFROM_GATHER_MISSING1 = 1, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_OPERATIONAL_STATE = 2, TOTEMSRP_GSFROM_THE_CONSENSUS_TIMEOUT_EXPIRED = 3, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_COMMIT_STATE = 4, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_RECOVERY_STATE = 5, TOTEMSRP_GSFROM_FAILED_TO_RECEIVE = 6, TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_OPERATIONAL_STATE = 7, TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_GATHER_STATE = 8, TOTEMSRP_GSFROM_MERGE_DURING_OPERATIONAL_STATE = 9, TOTEMSRP_GSFROM_MERGE_DURING_GATHER_STATE = 10, TOTEMSRP_GSFROM_MERGE_DURING_JOIN = 11, TOTEMSRP_GSFROM_JOIN_DURING_OPERATIONAL_STATE = 12, TOTEMSRP_GSFROM_JOIN_DURING_COMMIT_STATE = 13, TOTEMSRP_GSFROM_JOIN_DURING_RECOVERY = 14, TOTEMSRP_GSFROM_INTERFACE_CHANGE = 15, TOTEMSRP_GSFROM_MAX = TOTEMSRP_GSFROM_INTERFACE_CHANGE, }; const char* gather_state_from_desc [] = { [TOTEMSRP_GSFROM_CONSENSUS_TIMEOUT] = "consensus timeout", [TOTEMSRP_GSFROM_GATHER_MISSING1] = "MISSING", [TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_OPERATIONAL_STATE] = "The token was lost in the OPERATIONAL state.", [TOTEMSRP_GSFROM_THE_CONSENSUS_TIMEOUT_EXPIRED] = "The consensus timeout expired.", [TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_COMMIT_STATE] = "The token was lost in the COMMIT state.", [TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_RECOVERY_STATE] = "The token was lost in the RECOVERY state.", [TOTEMSRP_GSFROM_FAILED_TO_RECEIVE] = "failed to receive", [TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_OPERATIONAL_STATE] = "foreign message in operational state", [TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_GATHER_STATE] = "foreign message in gather state", [TOTEMSRP_GSFROM_MERGE_DURING_OPERATIONAL_STATE] = "merge during operational state", [TOTEMSRP_GSFROM_MERGE_DURING_GATHER_STATE] = "merge during gather state", [TOTEMSRP_GSFROM_MERGE_DURING_JOIN] = "merge during join", [TOTEMSRP_GSFROM_JOIN_DURING_OPERATIONAL_STATE] = "join during operational state", [TOTEMSRP_GSFROM_JOIN_DURING_COMMIT_STATE] = "join during commit state", [TOTEMSRP_GSFROM_JOIN_DURING_RECOVERY] = "join during recovery", [TOTEMSRP_GSFROM_INTERFACE_CHANGE] = "interface change", }; /* * forward decls */ static int message_handler_orf_token ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static int message_handler_mcast ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static int message_handler_memb_merge_detect ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static int message_handler_memb_join ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static int message_handler_memb_commit_token ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static int message_handler_token_hold_cancel ( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed); static void totemsrp_instance_initialize (struct totemsrp_instance *instance); static void srp_addr_to_nodeid ( struct totemsrp_instance *instance, 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 token_callbacks_execute (struct totemsrp_instance *instance, enum totem_callback_token_type type); static void memb_state_gather_enter (struct totemsrp_instance *instance, enum gather_state_from 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 (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 struct srp_addr srp_addr_endian_convert (struct srp_addr in); static void timer_function_orf_token_timeout (void *data); static void timer_function_orf_token_warning (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); static const char* gsfrom_to_msg(enum gather_state_from gsfrom); void main_deliver_fn ( void *context, const void *msg, unsigned int msg_len, const struct sockaddr_storage *system_from); 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_TYPE_ORF_TOKEN */ message_handler_mcast, /* MESSAGE_TYPE_MCAST */ message_handler_memb_merge_detect, /* MESSAGE_TYPE_MEMB_MERGE_DETECT */ message_handler_memb_join, /* MESSAGE_TYPE_MEMB_JOIN */ message_handler_memb_commit_token, /* MESSAGE_TYPE_MEMB_COMMIT_TOKEN */ message_handler_token_hold_cancel /* MESSAGE_TYPE_TOKEN_HOLD_CANCEL */ } }; #define log_printf(level, format, args...) \ do { \ instance->totemsrp_log_printf ( \ level, instance->totemsrp_subsys_id, \ __FUNCTION__, __FILE__, __LINE__, \ format, ##args); \ } while (0); #define LOGSYS_PERROR(err_num, level, fmt, args...) \ do { \ char _error_str[LOGSYS_MAX_PERROR_MSG_LEN]; \ const char *_error_ptr = qb_strerror_r(err_num, _error_str, sizeof(_error_str)); \ instance->totemsrp_log_printf ( \ level, instance->totemsrp_subsys_id, \ __FUNCTION__, __FILE__, __LINE__, \ fmt ": %s (%d)\n", ##args, _error_ptr, err_num); \ } while(0) static const char* gsfrom_to_msg(enum gather_state_from gsfrom) { if (gsfrom <= TOTEMSRP_GSFROM_MAX) { return gather_state_from_desc[gsfrom]; } else { return "UNKNOWN"; } } static void totemsrp_instance_initialize (struct totemsrp_instance *instance) { memset (instance, 0, sizeof (struct totemsrp_instance)); qb_list_init (&instance->token_callback_received_listhead); qb_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->orf_token_discard = 0; instance->originated_orf_token = 0; instance->commit_token = (struct memb_commit_token *)instance->commit_token_storage; instance->waiting_trans_ack = 1; } static int pause_flush (struct totemsrp_instance *instance) { uint64_t now_msec; uint64_t timestamp_msec; int res = 0; now_msec = (qb_util_nano_current_get () / QB_TIME_NS_IN_MSEC); timestamp_msec = instance->pause_timestamp / QB_TIME_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.", (unsigned int)(now_msec - timestamp_msec)); /* * -1 indicates an error from recvmsg */ do { res = totemnet_recv_mcast_empty (instance->totemnet_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 = qb_util_nano_current_get (); time_now = (nano_secs / QB_TIME_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; } static void totempg_mtu_changed(void *context, int net_mtu) { struct totemsrp_instance *instance = context; instance->totem_config->net_mtu = net_mtu - 2 * sizeof (struct mcast); log_printf (instance->totemsrp_log_level_debug, "Net MTU changed to %d, new value is %d", net_mtu, instance->totem_config->net_mtu); } /* * Exported interfaces */ int totemsrp_initialize ( qb_loop_t *poll_handle, void **srp_context, struct totem_config *totem_config, totempg_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), void (*waiting_trans_ack_cb_fn) ( int waiting_trans_ack)) { struct totemsrp_instance *instance; int res; instance = malloc (sizeof (struct totemsrp_instance)); if (instance == NULL) { goto error_exit; } totemsrp_instance_initialize (instance); instance->totemsrp_waiting_trans_ack_cb_fn = waiting_trans_ack_cb_fn; instance->totemsrp_waiting_trans_ack_cb_fn (1); 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_log_level_trace = totem_config->totem_logging_configuration.log_level_trace; instance->totemsrp_subsys_id = totem_config->totem_logging_configuration.log_subsys_id; instance->totemsrp_log_printf = totem_config->totem_logging_configuration.log_printf; /* * Configure totem store and load functions */ instance->memb_ring_id_create_or_load = totem_config->totem_memb_ring_id_create_or_load; instance->memb_ring_id_store = totem_config->totem_memb_ring_id_store; /* * Initialize local variables for totemsrp */ totemip_copy (&instance->mcast_address, &totem_config->interfaces[instance->lowest_active_if].mcast_addr); /* * Display totem configuration */ log_printf (instance->totemsrp_log_level_debug, "Token Timeout (%d ms) retransmit timeout (%d ms)", totem_config->token_timeout, totem_config->token_retransmit_timeout); if (totem_config->token_warning) { uint32_t token_warning_ms = totem_config->token_warning * totem_config->token_timeout / 100; log_printf(instance->totemsrp_log_level_debug, "Token warning every %d ms (%d%% of Token Timeout)", token_warning_ms, totem_config->token_warning); if (token_warning_ms < totem_config->token_retransmit_timeout) log_printf (LOGSYS_LEVEL_DEBUG, "The token warning interval (%d ms) is less than the token retransmit timeout (%d ms) " "which can lead to spurious token warnings. Consider increasing the token_warning parameter.", token_warning_ms, totem_config->token_retransmit_timeout); } else { log_printf(instance->totemsrp_log_level_debug, "Token warnings disabled"); } log_printf (instance->totemsrp_log_level_debug, "token hold (%d ms) retransmits before loss (%d retrans)", 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)", 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)", 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", 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)", totem_config->window_size, totem_config->max_messages); log_printf (instance->totemsrp_log_level_debug, "missed count const (%d messages)", totem_config->miss_count_const); log_printf (instance->totemsrp_log_level_debug, "send threads (%d threads)", totem_config->threads); log_printf (instance->totemsrp_log_level_debug, "heartbeat_failures_allowed (%d)", totem_config->heartbeat_failures_allowed); log_printf (instance->totemsrp_log_level_debug, "max_network_delay (%d ms)", totem_config->max_network_delay); cs_queue_init (&instance->retrans_message_queue, RETRANS_MESSAGE_QUEUE_SIZE_MAX, sizeof (struct message_item), instance->threaded_mode_enabled); 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"); 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)", 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"); log_printf (instance->totemsrp_log_level_debug, "heartbeat timeout should be less than the token timeout. Heartbeat is disabled!!"); instance->use_heartbeat = 0; } else { log_printf (instance->totemsrp_log_level_debug, "total heartbeat_timeout (%d ms)", instance->heartbeat_timeout); } } res = totemnet_initialize ( poll_handle, &instance->totemnet_context, totem_config, stats->srp, instance, main_deliver_fn, main_iface_change_fn, totempg_mtu_changed, target_set_completed); if (res == -1) { goto error_exit; } instance->my_id.nodeid = instance->totem_config->interfaces[instance->lowest_active_if].boundto.nodeid; /* * Must have net_mtu adjusted by totemnet_initialize first */ cs_queue_init (&instance->new_message_queue, MESSAGE_QUEUE_MAX, sizeof (struct message_item), instance->threaded_mode_enabled); cs_queue_init (&instance->new_message_queue_trans, MESSAGE_QUEUE_MAX, sizeof (struct message_item), instance->threaded_mode_enabled); 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_exit: return (-1); } void totemsrp_finalize ( void *srp_context) { struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context; memb_leave_message_send (instance); totemnet_finalize (instance->totemnet_context); cs_queue_free (&instance->new_message_queue); cs_queue_free (&instance->new_message_queue_trans); cs_queue_free (&instance->retrans_message_queue); sq_free (&instance->regular_sort_queue); sq_free (&instance->recovery_sort_queue); free (instance); } /* * Return configured interfaces. interfaces is array of totem_ip addresses allocated by caller, * with interaces_size number of items. iface_count is final number of interfaces filled by this * function. * * Function returns 0 on success, otherwise if interfaces array is not big enough, -2 is returned, * and if interface was not found, -1 is returned. */ int totemsrp_ifaces_get ( void *srp_context, unsigned int nodeid, unsigned int *interface_id, struct totem_ip_address *interfaces, unsigned int interfaces_size, char ***status, unsigned int *iface_count) { struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context; struct totem_ip_address *iface_ptr = interfaces; int res = 0; int i,n; int num_ifs = 0; memset(interfaces, 0, sizeof(struct totem_ip_address) * interfaces_size); *iface_count = INTERFACE_MAX; for (i=0; itotem_config->interfaces[i].member_count; n++) { if (instance->totem_config->interfaces[i].configured && instance->totem_config->interfaces[i].member_list[n].nodeid == nodeid) { memcpy(iface_ptr, &instance->totem_config->interfaces[i].member_list[n], sizeof(struct totem_ip_address)); interface_id[num_ifs] = i; iface_ptr++; if (++num_ifs > interfaces_size) { res = -2; break; } } } } totemnet_ifaces_get(instance->totemnet_context, status, iface_count); *iface_count = num_ifs; return (res); } int totemsrp_crypto_set ( void *srp_context, const char *cipher_type, const char *hash_type) { struct totemsrp_instance *instance = (struct totemsrp_instance *)srp_context; int res; res = totemnet_crypto_set(instance->totemnet_context, cipher_type, hash_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->my_id.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[instance->lowest_active_if].boundto.family; return (res); } /* * Set operations for use by the membership algorithm */ static int srp_addr_equal (const struct srp_addr *a, const struct srp_addr *b) { if (a->nodeid == b->nodeid) { return 1; } return 0; } static void srp_addr_to_nodeid ( struct totemsrp_instance *instance, 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].nodeid; } } static struct srp_addr srp_addr_endian_convert (struct srp_addr in) { struct srp_addr res; res.nodeid = swab32 (in.nodeid); return (res); } 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) { 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; for (i = 0; i < instance->consensus_list_entries; i++) { if (srp_addr_equal(addr, &instance->consensus_list[i].addr)) { found = 1; break; /* found entry */ } } 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; } } if (agreed && instance->failed_to_recv == 1) { /* * Both nodes agreed on our failure. We don't care how many proc list items left because we * will create single ring anyway. */ return (agreed); } 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) { 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) { 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) { and[*and_entries] = set1[j]; *and_entries = *and_entries + 1; } found = 0; } return; } static void memb_set_log( struct totemsrp_instance *instance, int level, const char *string, struct srp_addr *list, int list_entries) { char int_buf[32]; char list_str[512]; int i; memset(list_str, 0, sizeof(list_str)); for (i = 0; i < list_entries; i++) { if (i == 0) { snprintf(int_buf, sizeof(int_buf), CS_PRI_NODE_ID, list[i].nodeid); } else { snprintf(int_buf, sizeof(int_buf), "," CS_PRI_NODE_ID, list[i].nodeid); } if (strlen(list_str) + strlen(int_buf) >= sizeof(list_str)) { break ; } strcat(list_str, int_buf); } log_printf(level, "List '%s' contains %d entries: %s", string, list_entries, list_str); } static void my_leave_memb_clear( struct totemsrp_instance *instance) { memset(instance->my_leave_memb_list, 0, sizeof(instance->my_leave_memb_list)); instance->my_leave_memb_entries = 0; } static unsigned int my_leave_memb_match( struct totemsrp_instance *instance, unsigned int nodeid) { int i; unsigned int ret = 0; for (i = 0; i < instance->my_leave_memb_entries; i++){ if (instance->my_leave_memb_list[i] == nodeid){ ret = nodeid; break; } } return ret; } static void my_leave_memb_set( struct totemsrp_instance *instance, unsigned int nodeid) { int i, found = 0; for (i = 0; i < instance->my_leave_memb_entries; i++){ if (instance->my_leave_memb_list[i] == nodeid){ found = 1; break; } } if (found == 1) { return; } if (instance->my_leave_memb_entries < (PROCESSOR_COUNT_MAX - 1)) { instance->my_leave_memb_list[instance->my_leave_memb_entries] = nodeid; instance->my_leave_memb_entries++; } else { log_printf (instance->totemsrp_log_level_warning, "Cannot set LEAVE nodeid=" CS_PRI_NODE_ID, nodeid); } } static void *totemsrp_buffer_alloc (struct totemsrp_instance *instance) { assert (instance != NULL); return totemnet_buffer_alloc (instance->totemnet_context); } static void totemsrp_buffer_release (struct totemsrp_instance *instance, void *ptr) { assert (instance != NULL); totemnet_buffer_release (instance->totemnet_context, ptr); } static void reset_token_retransmit_timeout (struct totemsrp_instance *instance) { int32_t res; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_retransmit_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->token_retransmit_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_token_retransmit_timeout, &instance->timer_orf_token_retransmit_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "reset_token_retransmit_timeout - qb_loop_timer_add error : %d", res); } } static void start_merge_detect_timeout (struct totemsrp_instance *instance) { int32_t res; if (instance->my_merge_detect_timeout_outstanding == 0) { res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->merge_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_merge_detect_timeout, &instance->timer_merge_detect_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "start_merge_detect_timeout - qb_loop_timer_add error : %d", res); } instance->my_merge_detect_timeout_outstanding = 1; } } static void cancel_merge_detect_timeout (struct totemsrp_instance *instance) { qb_loop_timer_del (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) { if (instance->old_ring_state_saved == 0) { instance->old_ring_state_saved = 1; 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", 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", 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"); instance->old_ring_state_saved = 0; } static void reset_pause_timeout (struct totemsrp_instance *instance) { int32_t res; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_pause_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->token_timeout * QB_TIME_NS_IN_MSEC / 5, (void *)instance, timer_function_pause_timeout, &instance->timer_pause_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "reset_pause_timeout - qb_loop_timer_add error : %d", res); } } static void reset_token_warning (struct totemsrp_instance *instance) { int32_t res; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_warning); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->token_warning * instance->totem_config->token_timeout / 100 * QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_orf_token_warning, &instance->timer_orf_token_warning); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "reset_token_warning - qb_loop_timer_add error : %d", res); } } static void reset_token_timeout (struct totemsrp_instance *instance) { int32_t res; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->token_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_orf_token_timeout, &instance->timer_orf_token_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "reset_token_timeout - qb_loop_timer_add error : %d", res); } if (instance->totem_config->token_warning) reset_token_warning(instance); } static void reset_heartbeat_timeout (struct totemsrp_instance *instance) { int32_t res; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_heartbeat_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->heartbeat_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_heartbeat_timeout, &instance->timer_heartbeat_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "reset_heartbeat_timeout - qb_loop_timer_add error : %d", res); } } static void cancel_token_warning (struct totemsrp_instance *instance) { qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_warning); } static void cancel_token_timeout (struct totemsrp_instance *instance) { qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_timeout); if (instance->totem_config->token_warning) cancel_token_warning(instance); } static void cancel_heartbeat_timeout (struct totemsrp_instance *instance) { qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_heartbeat_timeout); } static void cancel_token_retransmit_timeout (struct totemsrp_instance *instance) { qb_loop_timer_del (instance->totemsrp_poll_handle, instance->timer_orf_token_retransmit_timeout); } static void start_token_hold_retransmit_timeout (struct totemsrp_instance *instance) { int32_t res; res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->token_hold_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, timer_function_token_hold_retransmit_timeout, &instance->timer_orf_token_hold_retransmit_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "start_token_hold_retransmit_timeout - qb_loop_timer_add error : %d", res); } } static void cancel_token_hold_retransmit_timeout (struct totemsrp_instance *instance) { qb_loop_timer_del (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, TOTEMSRP_GSFROM_CONSENSUS_TIMEOUT); } } 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 = qb_util_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, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_RECOVERY_STATE); instance->stats.recovery_token_lost++; } static void timer_function_orf_token_warning (void *data) { struct totemsrp_instance *instance = data; uint64_t tv_diff; /* need to protect against the case where token_warning is set to 0 dynamically */ if (instance->totem_config->token_warning) { tv_diff = qb_util_nano_current_get () / QB_TIME_NS_IN_MSEC - instance->stats.token[instance->stats.latest_token].rx; log_printf (instance->totemsrp_log_level_notice, "Token has not been received in %d ms ", (unsigned int) tv_diff); reset_token_warning(instance); } else { cancel_token_warning(instance); } } 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."); log_printf (instance->totemsrp_log_level_notice, "A processor failed, forming new configuration."); totemnet_iface_check (instance->totemnet_context); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_OPERATIONAL_STATE); instance->stats.operational_token_lost++; break; case MEMB_STATE_GATHER: log_printf (instance->totemsrp_log_level_debug, "The consensus timeout expired."); memb_state_consensus_timeout_expired (instance); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_THE_CONSENSUS_TIMEOUT_EXPIRED); 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."); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_THE_TOKEN_WAS_LOST_IN_THE_COMMIT_STATE); 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."); memb_recovery_state_token_loss (instance); instance->orf_token_discard = 1; 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 ", instance->memb_state); timer_function_orf_token_timeout(data); } static void memb_timer_function_state_gather (void *data) { struct totemsrp_instance *instance = data; int32_t res; 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 `*/ qb_loop_timer_del (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->join_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, memb_timer_function_state_gather, &instance->memb_timer_state_gather_join_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "memb_timer_function_state_gather - qb_loop_timer_add error : %d", res); } 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", 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) { /* * 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 " CS_PRI_RING_ID_SEQ, (uint64_t)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) { /* * Message is a recovery message encapsulated * in a new ring message */ regular_message_item.mcast = totemsrp_buffer_alloc (instance); assert(regular_message_item.mcast != NULL); regular_message_item.msg_len = recovery_message_item->msg_len - sizeof (struct mcast); memcpy(regular_message_item.mcast, (struct mcast *)(((char *)recovery_message_item->mcast) + sizeof (struct mcast)), regular_message_item.msg_len); mcast = regular_message_item.mcast; 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 " CS_PRI_RING_ID_SEQ, (uint64_t)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]; unsigned int i; unsigned int res; char left_node_msg[1024]; char joined_node_msg[1024]; char failed_node_msg[1024]; + struct sort_queue_item *sq_item; + unsigned int sq_iter_pos; instance->originated_orf_token = 0; memb_consensus_reset (instance); old_ring_state_reset (instance); deliver_messages_from_recovery_to_regular (instance); log_printf (instance->totemsrp_log_level_trace, "Delivering to app %x to %x", 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 (instance, left_list, instance->my_left_memb_list, instance->my_left_memb_entries); srp_addr_to_nodeid (instance, 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); instance->waiting_trans_ack = 1; instance->totemsrp_waiting_trans_ack_cb_fn (1); // 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 (instance, new_memb_list_totemip, instance->my_new_memb_list, instance->my_new_memb_entries); srp_addr_to_nodeid (instance, 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); + /* + * Free all messages from regular sort queue, because it + * is going to be overwriten by recovery_sort_queue + */ + sq_iter_pos = 0; + while ((sq_item = sq_iter_next(&instance->regular_sort_queue, &sq_iter_pos)) != NULL) { +// printf("Releasing %u\n", sq_iter_pos); + totemsrp_buffer_release(instance, sq_item->mcast); + } + /* * 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); + /* + * Reinit recovery queue, because it is now copied into regular queue + */ + sq_reinit (&instance->recovery_sort_queue, SEQNO_START_MSG); instance->my_last_aru = SEQNO_START_MSG; /* 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; /* * TODO Not exactly to spec * * At the entry to this function all messages without a gap are * deliered. * * This code throw away messages from the last gap in the sort queue * to my_high_seq_received * * What should really happen is we should deliver all messages up to * a gap, then delier the transitional configuration, then deliver * the messages between the first gap and my_high_seq_received, then * deliver a regular configuration, then deliver the regular * configuration * * Unfortunately totempg doesn't appear to like this operating mode * which needs more inspection */ i = instance->my_high_seq_received + 1; do { void *ptr; i -= 1; res = sq_item_get (&instance->regular_sort_queue, i, &ptr); if (i == 0) { break; } } while (res); instance->my_high_delivered = i; for (i = 0; i <= instance->my_high_delivered; i++) { void *ptr; res = sq_item_get (&instance->regular_sort_queue, i, &ptr); if (res == 0) { struct sort_queue_item *regular_message; regular_message = ptr; totemsrp_buffer_release (instance, regular_message->mcast); } } sq_items_release (&instance->regular_sort_queue, instance->my_high_delivered); instance->last_released = instance->my_high_delivered; if (joined_list_entries) { int sptr = 0; sptr += snprintf(joined_node_msg, sizeof(joined_node_msg)-sptr, " joined:"); for (i=0; i< joined_list_entries; i++) { sptr += snprintf(joined_node_msg+sptr, sizeof(joined_node_msg)-sptr, " " CS_PRI_NODE_ID, joined_list_totemip[i]); } } else { joined_node_msg[0] = '\0'; } if (instance->my_left_memb_entries) { int sptr = 0; int sptr2 = 0; sptr += snprintf(left_node_msg, sizeof(left_node_msg)-sptr, " left:"); for (i=0; i< instance->my_left_memb_entries; i++) { sptr += snprintf(left_node_msg+sptr, sizeof(left_node_msg)-sptr, " " CS_PRI_NODE_ID, left_list[i]); } for (i=0; i< instance->my_left_memb_entries; i++) { if (my_leave_memb_match(instance, left_list[i]) == 0) { if (sptr2 == 0) { sptr2 += snprintf(failed_node_msg, sizeof(failed_node_msg)-sptr2, " failed:"); } sptr2 += snprintf(failed_node_msg+sptr2, sizeof(left_node_msg)-sptr2, " " CS_PRI_NODE_ID, left_list[i]); } } if (sptr2 == 0) { failed_node_msg[0] = '\0'; } } else { left_node_msg[0] = '\0'; failed_node_msg[0] = '\0'; } my_leave_memb_clear(instance); log_printf (instance->totemsrp_log_level_debug, "entering OPERATIONAL state."); log_printf (instance->totemsrp_log_level_notice, "A new membership (" CS_PRI_RING_ID ") was formed. Members%s%s", instance->my_ring_id.rep, (uint64_t)instance->my_ring_id.seq, joined_node_msg, left_node_msg); if (strlen(failed_node_msg)) { log_printf (instance->totemsrp_log_level_notice, "Failed to receive the leave message.%s", failed_node_msg); } 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, enum gather_state_from gather_from) { int32_t res; instance->orf_token_discard = 1; instance->originated_orf_token = 0; 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 */ qb_loop_timer_del (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->join_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, memb_timer_function_state_gather, &instance->memb_timer_state_gather_join_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "memb_state_gather_enter - qb_loop_timer_add error(1) : %d", res); } /* * Restart the consensus timeout */ qb_loop_timer_del (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_consensus_timeout); res = qb_loop_timer_add (instance->totemsrp_poll_handle, QB_LOOP_MED, instance->totem_config->consensus_timeout*QB_TIME_NS_IN_MSEC, (void *)instance, memb_timer_function_gather_consensus_timeout, &instance->memb_timer_state_gather_consensus_timeout); if (res != 0) { log_printf(instance->totemsrp_log_level_error, "memb_state_gather_enter - qb_loop_timer_add error(2) : %d", res); } /* * 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(%s).", gather_from, gsfrom_to_msg(gather_from)); instance->memb_state = MEMB_STATE_GATHER; instance->stats.gather_entered++; if (gather_from == TOTEMSRP_GSFROM_THE_CONSENSUS_TIMEOUT_EXPIRED) { /* * State 3 means gather, so we are continuously gathering. */ instance->stats.continuous_gather++; } 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); qb_loop_timer_del (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_join_timeout); instance->memb_timer_state_gather_join_timeout = 0; qb_loop_timer_del (instance->totemsrp_poll_handle, instance->memb_timer_state_gather_consensus_timeout); instance->memb_timer_state_gather_consensus_timeout = 0; memb_ring_id_set (instance, &instance->commit_token->ring_id); instance->memb_ring_id_store (&instance->my_ring_id, instance->my_id.nodeid); instance->token_ring_id_seq = instance->my_ring_id.seq; log_printf (instance->totemsrp_log_level_debug, "entering COMMIT state."); 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]; + unsigned int sq_iter_pos; + struct sort_queue_item *sq_item; + struct message_item *retrans_msg_item; 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."); instance->orf_token_discard = 0; instance->my_high_ring_delivered = 0; + /* + * Free all messages from recovery sort queue, because it + * is going to be reinitialized + */ + sq_iter_pos = 0; + while ((sq_item = sq_iter_next(&instance->recovery_sort_queue, &sq_iter_pos)) != NULL) { +// printf("Recovery Releasing %u\n", sq_iter_pos); + totemsrp_buffer_release(instance, sq_item->mcast); + } + sq_reinit (&instance->recovery_sort_queue, SEQNO_START_MSG); + + while (!cs_queue_is_empty(&instance->retrans_message_queue)) { + retrans_msg_item = (struct message_item *)cs_queue_item_get (&instance->retrans_message_queue); + +// printf("Recovery Releasing cs_queue item %p\n", retrans_msg_item->mcast); + totemsrp_buffer_release(instance, retrans_msg_item->mcast); + + cs_queue_item_remove (&instance->retrans_message_queue); + } + 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 */ totemnet_processor_count_set ( instance->totemnet_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 " CS_PRI_NODE_ID ":", i, instance->my_trans_memb_list[i].nodeid); } for (i = 0; i < instance->my_new_memb_entries; i++) { log_printf (instance->totemsrp_log_level_debug, "position [%d] member " CS_PRI_NODE_ID ":", i, addr[i].nodeid); log_printf (instance->totemsrp_log_level_debug, "previous ringid (" CS_PRI_RING_ID ")", memb_list[i].ring_id.rep, (uint64_t)memb_list[i].ring_id.seq); log_printf (instance->totemsrp_log_level_debug, "aru %x high delivered %x received flag %d", 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.", 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); memset(message_item.mcast, 0, sizeof (struct mcast)); message_item.mcast->header.magic = TOTEM_MH_MAGIC; message_item.mcast->header.version = TOTEM_MH_VERSION; message_item.mcast->header.type = MESSAGE_TYPE_MCAST; message_item.mcast->system_from = instance->my_id; message_item.mcast->header.encapsulated = MESSAGE_ENCAPSULATED; message_item.mcast->header.nodeid = instance->my_id.nodeid; assert (message_item.mcast->header.nodeid); 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.", messages_originated); goto originated; no_originate: log_printf (instance->totemsrp_log_level_debug, "Did not need to originate any messages in recovery."); 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; struct cs_queue *queue_use; if (instance->waiting_trans_ack) { queue_use = &instance->new_message_queue_trans; } else { queue_use = &instance->new_message_queue; } if (cs_queue_is_full (queue_use)) { log_printf (instance->totemsrp_log_level_debug, "queue full"); 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 */ memset(message_item.mcast, 0, sizeof (struct mcast)); message_item.mcast->header.magic = TOTEM_MH_MAGIC; message_item.mcast->header.version = TOTEM_MH_VERSION; message_item.mcast->header.type = MESSAGE_TYPE_MCAST; message_item.mcast->header.encapsulated = MESSAGE_NOT_ENCAPSULATED; message_item.mcast->header.nodeid = instance->my_id.nodeid; assert (message_item.mcast->header.nodeid); message_item.mcast->guarantee = guarantee; 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_trace, "mcasted message added to pending queue"); instance->stats.mcast_tx++; cs_queue_item_add (queue_use, &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; struct cs_queue *queue_use; if (instance->waiting_trans_ack) { queue_use = &instance->new_message_queue_trans; } else { queue_use = &instance->new_message_queue; } cs_queue_avail (queue_use, &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"); 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; totemnet_mcast_noflush_send ( instance->totemnet_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_trace, "releasing messages up to and including %x", 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; 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 { if (instance->waiting_trans_ack) { mcast_queue = &instance->new_message_queue_trans; } 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); totemnet_mcast_noflush_send ( instance->totemnet_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", 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, ""); 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) { totemnet_token_send (instance->totemnet_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 (instance->my_ring_id.rep == instance->my_id.nodeid) { 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)); orf_token->header.nodeid = instance->my_id.nodeid; memcpy (instance->orf_token_retransmit, orf_token, orf_token_size); instance->orf_token_retransmit_size = orf_token_size; assert (orf_token->header.nodeid); if (forward_token == 0) { return (0); } totemnet_token_send (instance->totemnet_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.magic = TOTEM_MH_MAGIC; token_hold_cancel.header.version = TOTEM_MH_VERSION; token_hold_cancel.header.type = MESSAGE_TYPE_TOKEN_HOLD_CANCEL; token_hold_cancel.header.encapsulated = 0; token_hold_cancel.header.nodeid = instance->my_id.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++; totemnet_mcast_flush_send (instance->totemnet_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.magic = TOTEM_MH_MAGIC; orf_token.header.version = TOTEM_MH_VERSION; orf_token.header.type = MESSAGE_TYPE_ORF_TOKEN; orf_token.header.encapsulated = 0; orf_token.header.nodeid = instance->my_id.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.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.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; addr = (struct srp_addr *)instance->commit_token->end_of_commit_token; /* Totemnet just looks at the node id */ totemnet_token_target_set ( instance->totemnet_context, addr[instance->commit_token->memb_index % instance->commit_token->addr_entries].nodeid); } 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->header.nodeid = instance->my_id.nodeid; 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++; totemnet_token_send (instance->totemnet_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++; instance->commit_token->header.nodeid = instance->my_id.nodeid; 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++; totemnet_token_send (instance->totemnet_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; unsigned int lowest_nodeid; 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 */ assert(token_memb_entries > 0); lowest_nodeid = token_memb[0].nodeid; for (i = 1; i < token_memb_entries; i++) { if (lowest_nodeid > token_memb[i].nodeid) { lowest_nodeid = token_memb[i].nodeid; } } return (lowest_nodeid == instance->my_id.nodeid); } 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; if (srp_a->nodeid < srp_b->nodeid) { return -1; } else if (srp_a->nodeid > srp_b->nodeid) { return 1; } else { return 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."); 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.magic = TOTEM_MH_MAGIC; instance->commit_token->header.version = TOTEM_MH_VERSION; instance->commit_token->header.type = MESSAGE_TYPE_MEMB_COMMIT_TOKEN; instance->commit_token->header.encapsulated = 0; instance->commit_token->header.nodeid = instance->my_id.nodeid; assert (instance->commit_token->header.nodeid); instance->commit_token->ring_id.rep = instance->my_id.nodeid; 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[40000]; struct memb_join *memb_join = (struct memb_join *)memb_join_data; char *addr; unsigned int addr_idx; size_t msg_len; memb_join->header.magic = TOTEM_MH_MAGIC; memb_join->header.version = TOTEM_MH_VERSION; memb_join->header.type = MESSAGE_TYPE_MEMB_JOIN; memb_join->header.encapsulated = 0; memb_join->header.nodeid = instance->my_id.nodeid; assert (memb_join->header.nodeid); msg_len = sizeof(struct memb_join) + ((instance->my_proc_list_entries + instance->my_failed_list_entries) * sizeof(struct srp_addr)); if (msg_len > sizeof(memb_join_data)) { log_printf (instance->totemsrp_log_level_error, "memb_join_message too long. Ignoring message."); return ; } 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; 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++; totemnet_mcast_flush_send ( instance->totemnet_context, memb_join, addr_idx); } static void memb_leave_message_send (struct totemsrp_instance *instance) { char memb_join_data[40000]; 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]; size_t msg_len; log_printf (instance->totemsrp_log_level_debug, "sending join/leave message"); /* * 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); msg_len = sizeof(struct memb_join) + ((active_memb_entries + instance->my_failed_list_entries) * sizeof(struct srp_addr)); if (msg_len > sizeof(memb_join_data)) { log_printf (instance->totemsrp_log_level_error, "memb_leave message too long. Ignoring message."); return ; } memb_join->header.magic = TOTEM_MH_MAGIC; memb_join->header.version = TOTEM_MH_VERSION; memb_join->header.type = MESSAGE_TYPE_MEMB_JOIN; 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; memb_join->system_from = instance->my_id; // 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++; totemnet_mcast_flush_send ( instance->totemnet_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.magic = TOTEM_MH_MAGIC; memb_merge_detect.header.version = TOTEM_MH_VERSION; memb_merge_detect.header.type = MESSAGE_TYPE_MEMB_MERGE_DETECT; memb_merge_detect.header.encapsulated = 0; memb_merge_detect.header.nodeid = instance->my_id.nodeid; 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++; totemnet_mcast_flush_send (instance->totemnet_context, &memb_merge_detect, sizeof (struct memb_merge_detect)); } static void memb_ring_id_set ( struct totemsrp_instance *instance, const struct memb_ring_id *ring_id) { memcpy (&instance->my_ring_id, ring_id, sizeof (struct memb_ring_id)); } 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; qb_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: qb_list_add (&callback_handle->list, &instance->token_callback_received_listhead); break; case TOTEM_CALLBACK_TOKEN_SENT: qb_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; qb_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 qb_list_head *list, *tmp_iter; struct qb_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); } qb_list_for_each_safe(list, tmp_iter, callback_listhead) { token_callback_instance = qb_list_entry (list, struct token_callback_instance, list); del = token_callback_instance->delete; if (del == 1) { qb_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) { qb_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; struct cs_queue *queue_use = NULL; if (instance->memb_state == MEMB_STATE_OPERATIONAL) { if (instance->waiting_trans_ack) { queue_use = &instance->new_message_queue_trans; } else { queue_use = &instance->new_message_queue; } } else if (instance->memb_state == MEMB_STATE_RECOVERY) { queue_use = &instance->retrans_message_queue; } if (queue_use != NULL) { backlog = cs_queue_used (queue_use); } 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; } /* * Sanity checkers */ static int check_orf_token_sanity( const struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { int rtr_entries; const struct orf_token *token = (const struct orf_token *)msg; size_t required_len; if (msg_len < sizeof(struct orf_token)) { log_printf (instance->totemsrp_log_level_security, "Received orf_token message is too short... ignoring."); return (-1); } if (endian_conversion_needed) { rtr_entries = swab32(token->rtr_list_entries); } else { rtr_entries = token->rtr_list_entries; } required_len = sizeof(struct orf_token) + rtr_entries * sizeof(struct rtr_item); if (msg_len < required_len) { log_printf (instance->totemsrp_log_level_security, "Received orf_token message is too short... ignoring."); return (-1); } return (0); } static int check_mcast_sanity( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { if (msg_len < sizeof(struct mcast)) { log_printf (instance->totemsrp_log_level_security, "Received mcast message is too short... ignoring."); return (-1); } return (0); } static int check_memb_merge_detect_sanity( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { if (msg_len < sizeof(struct memb_merge_detect)) { log_printf (instance->totemsrp_log_level_security, "Received memb_merge_detect message is too short... ignoring."); return (-1); } return (0); } static int check_memb_join_sanity( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { const struct memb_join *mj_msg = (const struct memb_join *)msg; unsigned int proc_list_entries; unsigned int failed_list_entries; size_t required_len; if (msg_len < sizeof(struct memb_join)) { log_printf (instance->totemsrp_log_level_security, "Received memb_join message is too short... ignoring."); return (-1); } proc_list_entries = mj_msg->proc_list_entries; failed_list_entries = mj_msg->failed_list_entries; if (endian_conversion_needed) { proc_list_entries = swab32(proc_list_entries); failed_list_entries = swab32(failed_list_entries); } required_len = sizeof(struct memb_join) + ((proc_list_entries + failed_list_entries) * sizeof(struct srp_addr)); if (msg_len < required_len) { log_printf (instance->totemsrp_log_level_security, "Received memb_join message is too short... ignoring."); return (-1); } return (0); } static int check_memb_commit_token_sanity( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { const struct memb_commit_token *mct_msg = (const struct memb_commit_token *)msg; unsigned int addr_entries; size_t required_len; if (msg_len < sizeof(struct memb_commit_token)) { log_printf (instance->totemsrp_log_level_security, "Received memb_commit_token message is too short... ignoring."); return (0); } addr_entries= mct_msg->addr_entries; if (endian_conversion_needed) { addr_entries = swab32(addr_entries); } required_len = sizeof(struct memb_commit_token) + (addr_entries * (sizeof(struct srp_addr) + sizeof(struct memb_commit_token_memb_entry))); if (msg_len < required_len) { log_printf (instance->totemsrp_log_level_security, "Received memb_commit_token message is too short... ignoring."); return (-1); } return (0); } static int check_token_hold_cancel_sanity( struct totemsrp_instance *instance, const void *msg, size_t msg_len, int endian_conversion_needed) { if (msg_len < sizeof(struct token_hold_cancel)) { log_printf (instance->totemsrp_log_level_security, "Received token_hold_cancel message is too short... ignoring."); return (-1); } return (0); } /* * 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 = qb_util_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", ((float)tv_diff) / 1000000.0); #endif if (check_orf_token_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } if (instance->orf_token_discard) { return (0); } #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 instance->flushing = 1; totemnet_recv_flush (instance->totemnet_context); instance->flushing = 0; /* * Determine if we should hold (in reality drop) the token */ instance->my_token_held = 0; if (instance->my_ring_id.rep == instance->my_id.nodeid && instance->my_seq_unchanged > instance->totem_config->seqno_unchanged_const) { instance->my_token_held = 1; } else { if (instance->my_ring_id.rep != instance->my_id.nodeid && 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 (instance->my_ring_id.rep == instance->my_id.nodeid) { 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); if (instance->my_token_held == 1 && (token->rtr_list_entries > 0 || mcasted_retransmit > 0)) { instance->my_token_held = 0; forward_token = 1; } 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.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.nodeid; } } if (token->aru == last_aru && token->aru_addr != 0) { instance->my_aru_count += 1; } else { instance->my_aru_count = 0; } /* * We really don't follow specification there. In specification, OTHER nodes * detect failure of one node (based on aru_count) and my_id IS NEVER added * to failed list (so node never mark itself as failed) */ if (instance->my_aru_count > instance->totem_config->fail_to_recv_const && token->aru_addr == instance->my_id.nodeid) { log_printf (instance->totemsrp_log_level_error, "FAILED TO RECEIVE"); 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, TOTEMSRP_GSFROM_FAILED_TO_RECEIVE); } 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", 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", 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", 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; } } totemnet_send_flush (instance->totemnet_context); token_send (instance, token, forward_token); #ifdef GIVEINFO tv_current = qb_util_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", ((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 (instance->my_id.nodeid == 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; struct srp_addr aligned_system_from; range = end_point - instance->my_high_delivered; if (range) { log_printf (instance->totemsrp_log_level_trace, "Delivering %x to %x", 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.magic != TOTEM_MH_MAGIC) { endian_conversion_required = 1; mcast_endian_convert (mcast_in, &mcast_header); } else { memcpy (&mcast_header, mcast_in, sizeof (struct mcast)); } aligned_system_from = mcast_header.system_from; /* * Skip messages not originated in instance->my_deliver_memb */ if (skip && memb_set_subset (&aligned_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_trace, "Delivering MCAST message with seq %x to pending delivery queue", 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; struct srp_addr aligned_system_from; if (check_mcast_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } 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) { aligned_system_from = mcast_header.system_from; switch (instance->memb_state) { case MEMB_STATE_OPERATIONAL: memb_set_merge ( &aligned_system_from, 1, instance->my_proc_list, &instance->my_proc_list_entries); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_OPERATIONAL_STATE); break; case MEMB_STATE_GATHER: if (!memb_set_subset ( &aligned_system_from, 1, instance->my_proc_list, instance->my_proc_list_entries)) { memb_set_merge (&aligned_system_from, 1, instance->my_proc_list, &instance->my_proc_list_entries); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_FOREIGN_MESSAGE_IN_GATHER_STATE); 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_trace, "Received ringid (" CS_PRI_RING_ID ") seq %x", mcast_header.ring_id.rep, (uint64_t)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; struct srp_addr aligned_system_from; if (check_memb_merge_detect_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } 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); } aligned_system_from = memb_merge_detect.system_from; /* * Execute merge operation */ switch (instance->memb_state) { case MEMB_STATE_OPERATIONAL: memb_set_merge (&aligned_system_from, 1, instance->my_proc_list, &instance->my_proc_list_entries); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_MERGE_DURING_OPERATIONAL_STATE); break; case MEMB_STATE_GATHER: if (!memb_set_subset ( &aligned_system_from, 1, instance->my_proc_list, instance->my_proc_list_entries)) { memb_set_merge (&aligned_system_from, 1, instance->my_proc_list, &instance->my_proc_list_entries); memb_state_gather_enter (instance, TOTEMSRP_GSFROM_MERGE_DURING_GATHER_STATE); 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]; struct srp_addr aligned_system_from; proc_list = (struct srp_addr *)memb_join->end_of_memb_join; failed_list = proc_list + memb_join->proc_list_entries; aligned_system_from = memb_join->system_from; log_printf(instance->totemsrp_log_level_trace, "memb_join_process"); memb_set_log(instance, instance->totemsrp_log_level_trace, "proclist", proc_list, memb_join->proc_list_entries); memb_set_log(instance, instance->totemsrp_log_level_trace, "faillist", failed_list, memb_join->failed_list_entries); memb_set_log(instance, instance->totemsrp_log_level_trace, "my_proclist", instance->my_proc_list, instance->my_proc_list_entries); memb_set_log(instance, instance->totemsrp_log_level_trace, "my_faillist", instance->my_failed_list, instance->my_failed_list_entries); if (memb_join->header.type == MESSAGE_TYPE_MEMB_JOIN) { if (instance->flushing) { if (memb_join->header.nodeid == LEAVE_DUMMY_NODEID) { log_printf (instance->totemsrp_log_level_warning, "Discarding LEAVE message during flush, nodeid=" CS_PRI_NODE_ID, memb_join->failed_list_entries > 0 ? failed_list[memb_join->failed_list_entries - 1 ].nodeid : LEAVE_DUMMY_NODEID); if (memb_join->failed_list_entries > 0) { my_leave_memb_set(instance, failed_list[memb_join->failed_list_entries - 1 ].nodeid); } } else { log_printf (instance->totemsrp_log_level_warning, "Discarding JOIN message during flush, nodeid=" CS_PRI_NODE_ID, memb_join->header.nodeid); } return; } else { if (memb_join->header.nodeid == LEAVE_DUMMY_NODEID) { log_printf (instance->totemsrp_log_level_debug, "Received LEAVE message from " CS_PRI_NODE_ID, memb_join->failed_list_entries > 0 ? failed_list[memb_join->failed_list_entries - 1 ].nodeid : LEAVE_DUMMY_NODEID); if (memb_join->failed_list_entries > 0) { my_leave_memb_set(instance, failed_list[memb_join->failed_list_entries - 1 ].nodeid); } } } } 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)) { if (memb_join->header.nodeid != LEAVE_DUMMY_NODEID) { memb_consensus_set (instance, &aligned_system_from); } if (memb_consensus_agreed (instance) && instance->failed_to_recv == 1) { instance->failed_to_recv = 0; 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 { goto out; } } 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)) { goto out; } else if (memb_set_subset (&aligned_system_from, 1, instance->my_failed_list, instance->my_failed_list_entries)) { goto out; } 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 ( &aligned_system_from, 1, instance->my_failed_list, &instance->my_failed_list_entries); } else { if (memb_set_subset ( &aligned_system_from, 1, instance->my_memb_list, instance->my_memb_entries)) { if (memb_set_subset ( &aligned_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, TOTEMSRP_GSFROM_MERGE_DURING_JOIN); gather_entered = 1; } out: if (gather_entered == 0 && instance->memb_state == MEMB_STATE_OPERATIONAL) { memb_state_gather_enter (instance, TOTEMSRP_GSFROM_JOIN_DURING_OPERATIONAL_STATE); } } 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.magic = TOTEM_MH_MAGIC; out->header.version = TOTEM_MH_VERSION; out->header.type = in->header.type; out->header.nodeid = swab32 (in->header.nodeid); out->system_from = srp_addr_endian_convert(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++) { out_proc_list[i] = srp_addr_endian_convert (in_proc_list[i]); } for (i = 0; i < out->failed_list_entries; i++) { out_failed_list[i] = srp_addr_endian_convert (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.magic = TOTEM_MH_MAGIC; out->header.version = TOTEM_MH_VERSION; out->header.type = in->header.type; out->header.nodeid = swab32 (in->header.nodeid); out->token_seq = swab32 (in->token_seq); out->ring_id.rep = swab32(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++) { out_addr[i] = srp_addr_endian_convert (in_addr[i]); /* * Only convert the memb entry if it has been set */ if (in_memb_list[i].ring_id.rep != 0) { out_memb_list[i].ring_id.rep = swab32(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.magic = TOTEM_MH_MAGIC; out->header.version = TOTEM_MH_VERSION; out->header.type = in->header.type; out->header.nodeid = swab32 (in->header.nodeid); out->seq = swab32 (in->seq); out->token_seq = swab32 (in->token_seq); out->aru = swab32 (in->aru); out->ring_id.rep = swab32(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++) { out->rtr_list[i].ring_id.rep = swab32(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.magic = TOTEM_MH_MAGIC; out->header.version = TOTEM_MH_VERSION; out->header.type = in->header.type; 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); out->ring_id.rep = swab32(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); out->system_from = srp_addr_endian_convert(in->system_from); } static void memb_merge_detect_endian_convert ( const struct memb_merge_detect *in, struct memb_merge_detect *out) { out->header.magic = TOTEM_MH_MAGIC; out->header.version = TOTEM_MH_VERSION; out->header.type = in->header.type; out->header.nodeid = swab32 (in->header.nodeid); out->ring_id.rep = swab32(in->ring_id.rep); out->ring_id.seq = swab64 (in->ring_id.seq); out->system_from = srp_addr_endian_convert (in->system_from); } static int ignore_join_under_operational ( struct totemsrp_instance *instance, const struct memb_join *memb_join) { struct srp_addr *proc_list; struct srp_addr *failed_list; unsigned long long ring_seq; struct srp_addr aligned_system_from; proc_list = (struct srp_addr *)memb_join->end_of_memb_join; failed_list = proc_list + memb_join->proc_list_entries; ring_seq = memb_join->ring_seq; aligned_system_from = memb_join->system_from; if (memb_set_subset (&instance->my_id, 1, failed_list, memb_join->failed_list_entries)) { return (1); } /* * In operational state, my_proc_list is exactly the same as * my_memb_list. */ if ((memb_set_subset (&aligned_system_from, 1, instance->my_memb_list, instance->my_memb_entries)) && (ring_seq < instance->my_ring_id.seq)) { return (1); } return (0); } 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); struct srp_addr aligned_system_from; if (check_memb_join_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } if (endian_conversion_needed) { memb_join = memb_join_convert; memb_join_endian_convert (msg, memb_join_convert); } else { memb_join = msg; } aligned_system_from = memb_join->system_from; /* * 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: if (!ignore_join_under_operational (instance, memb_join)) { 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 (&aligned_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, TOTEMSRP_GSFROM_JOIN_DURING_COMMIT_STATE); } break; case MEMB_STATE_RECOVERY: if (memb_set_subset (&aligned_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, TOTEMSRP_GSFROM_JOIN_DURING_RECOVERY); } 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"); if (check_memb_commit_token_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } 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 (instance->my_id.nodeid == instance->my_ring_id.rep) { /* Filter out duplicated tokens */ if (instance->originated_orf_token) { break; } instance->originated_orf_token = 1; log_printf (instance->totemsrp_log_level_debug, "Sending initial ORF token"); // 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 (check_token_hold_cancel_sanity(instance, msg, msg_len, endian_conversion_needed) == -1) { return (0); } if (memcmp (&token_hold_cancel->ring_id, &instance->my_ring_id, sizeof (struct memb_ring_id)) == 0) { instance->my_seq_unchanged = 0; if (instance->my_ring_id.rep == instance->my_id.nodeid) { timer_function_token_retransmit_timeout (instance); } } return (0); } static int check_message_header_validity( void *context, const void *msg, unsigned int msg_len, const struct sockaddr_storage *system_from) { struct totemsrp_instance *instance = context; const struct totem_message_header *message_header = msg; const char *guessed_str; const char *msg_byte = msg; if (msg_len < sizeof (struct totem_message_header)) { log_printf (instance->totemsrp_log_level_security, "Message received from %s is too short... Ignoring %u.", totemip_sa_print((struct sockaddr *)system_from), (unsigned int)msg_len); return (-1); } if (message_header->magic != TOTEM_MH_MAGIC && message_header->magic != swab16(TOTEM_MH_MAGIC)) { /* * We've received ether Knet, old version of Corosync, * or something else. Do some guessing to display (hopefully) * helpful message */ guessed_str = NULL; if (message_header->magic == 0xFFFF) { /* * Corosync 2.2 used header with two UINT8_MAX */ guessed_str = "Corosync 2.2"; } else if (message_header->magic == 0xFEFE) { /* * Corosync 2.3+ used header with two UINT8_MAX - 1 */ guessed_str = "Corosync 2.3+"; } else if (msg_byte[0] == 0x01) { /* * Knet has stable1 with first byte of message == 1 */ guessed_str = "unencrypted Kronosnet"; } else if (msg_byte[0] >= 0 && msg_byte[0] <= 5) { /* * Unencrypted Corosync 1.x/OpenAIS has first byte * 0-5. Collision with Knet (but still worth the try) */ guessed_str = "unencrypted Corosync 2.0/2.1/1.x/OpenAIS"; } else { /* * Encrypted Kronosned packet has a hash at the end of * the packet and nothing specific at the beginning of the * packet (just encrypted data). * Encrypted Corosync 1.x/OpenAIS is quite similar but hash_digest * is in the beginning of the packet. * * So it's not possible to reliably detect ether of them. */ guessed_str = "encrypted Kronosnet/Corosync 2.0/2.1/1.x/OpenAIS or unknown"; } log_printf(instance->totemsrp_log_level_security, "Message received from %s has bad magic number (probably sent by %s).. Ignoring", totemip_sa_print((struct sockaddr *)system_from), guessed_str); return (-1); } if (message_header->version != TOTEM_MH_VERSION) { log_printf(instance->totemsrp_log_level_security, "Message received from %s has unsupported version %u... Ignoring", totemip_sa_print((struct sockaddr *)system_from), message_header->version); return (-1); } return (0); } void main_deliver_fn ( void *context, const void *msg, unsigned int msg_len, const struct sockaddr_storage *system_from) { struct totemsrp_instance *instance = context; const struct totem_message_header *message_header = msg; if (check_message_header_validity(context, msg, msg_len, system_from) == -1) { 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: log_printf (instance->totemsrp_log_level_security, "Message received from %s has wrong type... ignoring %d.\n", totemip_sa_print((struct sockaddr *)system_from), (int)message_header->type); instance->stats.rx_msg_dropped++; return; } /* * Handle incoming message */ totemsrp_message_handlers.handler_functions[(int)message_header->type] ( instance, msg, msg_len, message_header->magic != TOTEM_MH_MAGIC); } int totemsrp_iface_set ( void *context, const struct totem_ip_address *interface_addr, unsigned short ip_port, unsigned int iface_no) { struct totemsrp_instance *instance = context; int res; totemip_copy(&instance->my_addrs[iface_no], interface_addr); res = totemnet_iface_set ( instance->totemnet_context, interface_addr, ip_port, iface_no); return (res); } void main_iface_change_fn ( void *context, const struct totem_ip_address *iface_addr, unsigned int iface_no) { struct totemsrp_instance *instance = context; int num_interfaces; int i; if (!instance->my_id.nodeid) { instance->my_id.nodeid = iface_addr->nodeid; } totemip_copy (&instance->my_addrs[iface_no], iface_addr); if (instance->iface_changes++ == 0) { instance->memb_ring_id_create_or_load (&instance->my_ring_id, instance->my_id.nodeid); /* * Increase the ring_id sequence number. This doesn't follow specification. * Solves problem with restarted leader node (node with lowest nodeid) before * rest of the cluster forms new membership and guarantees unique ring_id for * new singleton configuration. */ instance->my_ring_id.seq++; instance->token_ring_id_seq = instance->my_ring_id.seq; log_printf ( instance->totemsrp_log_level_debug, "Created or loaded sequence id " CS_PRI_RING_ID " for this ring.", instance->my_ring_id.rep, (uint64_t)instance->my_ring_id.seq); if (instance->totemsrp_service_ready_fn) { instance->totemsrp_service_ready_fn (); } } 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); } num_interfaces = 0; for (i = 0; i < INTERFACE_MAX; i++) { if (instance->totem_config->interfaces[i].configured) { num_interfaces++; } } if (instance->iface_changes >= num_interfaces) { memb_state_gather_enter (instance, TOTEMSRP_GSFROM_INTERFACE_CHANGE); } } void totemsrp_net_mtu_adjust (struct totem_config *totem_config) { totem_config->net_mtu -= 2 * 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 iface_no) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; int res; res = totemnet_member_add (instance->totemnet_context, &instance->my_addrs[iface_no], member, iface_no); return (res); } int totemsrp_member_remove ( void *context, const struct totem_ip_address *member, int iface_no) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; int res; res = totemnet_member_remove (instance->totemnet_context, member, iface_no); return (res); } void totemsrp_threaded_mode_enable (void *context) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; instance->threaded_mode_enabled = 1; } void totemsrp_trans_ack (void *context) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; instance->waiting_trans_ack = 0; instance->totemsrp_waiting_trans_ack_cb_fn (0); } int totemsrp_reconfigure (void *context, struct totem_config *totem_config) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; int res; res = totemnet_reconfigure (instance->totemnet_context, totem_config); return (res); } void totemsrp_stats_clear (void *context, int flags) { struct totemsrp_instance *instance = (struct totemsrp_instance *)context; memset(&instance->stats, 0, sizeof(totemsrp_stats_t)); if (flags & TOTEMPG_STATS_CLEAR_TRANSPORT) { totemnet_stats_clear (instance->totemnet_context); } } void totemsrp_force_gather (void *context) { timer_function_orf_token_timeout(context); }