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7af4605ef7
haproxy/src/peers.c
David du Colombier 7af4605ef7 BUG/MAJOR: trash must always be the size of a buffer 
Before it was possible to resize the buffers using global.tune.bufsize,
the trash has always been the size of a buffer by design. Unfortunately,
the recent buffer sizing at runtime forgot to adjust the trash, resulting
in it being too short for content rewriting if buffers were enlarged from
the default value.

The bug was encountered in 1.4 so the fix must be backported there.
2012-05-16 14:21:55 +02:00

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/*
* Stick table synchro management.
*
* Copyright 2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <common/compat.h>
#include <common/config.h>
#include <common/time.h>
#include <types/global.h>
#include <types/peers.h>
#include <proto/acl.h>
#include <proto/buffers.h>
#include <proto/fd.h>
#include <proto/log.h>
#include <proto/hdr_idx.h>
#include <proto/protocols.h>
#include <proto/proto_tcp.h>
#include <proto/proto_http.h>
#include <proto/proxy.h>
#include <proto/session.h>
#include <proto/sock_raw.h>
#include <proto/stream_interface.h>
#include <proto/task.h>
#include <proto/stick_table.h>
#include <proto/signal.h>
/*******************************/
/* Current peer learning state */
/*******************************/
/******************************/
/* Current table resync state */
/******************************/
#define SHTABLE_F_RESYNC_LOCAL 0x00000001 /* Learn from local finished or no more needed */
#define SHTABLE_F_RESYNC_REMOTE 0x00000002 /* Learn from remote finished or no more needed */
#define SHTABLE_F_RESYNC_ASSIGN 0x00000004 /* A peer was assigned to learn our lesson */
#define SHTABLE_F_RESYNC_PROCESS 0x00000008 /* The assigned peer was requested for resync */
#define SHTABLE_F_DONOTSTOP 0x00010000 /* Main table sync task block process during soft stop
to push data to new process */
#define SHTABLE_RESYNC_STATEMASK (SHTABLE_F_RESYNC_LOCAL|SHTABLE_F_RESYNC_REMOTE)
#define SHTABLE_RESYNC_FROMLOCAL 0x00000000
#define SHTABLE_RESYNC_FROMREMOTE SHTABLE_F_RESYNC_LOCAL
#define SHTABLE_RESYNC_FINISHED (SHTABLE_F_RESYNC_LOCAL|SHTABLE_F_RESYNC_REMOTE)
/******************************/
/* Remote peer teaching state */
/******************************/
#define PEER_F_TEACH_PROCESS 0x00000001 /* Teach a lesson to current peer */
#define PEER_F_TEACH_STAGE1 0x00000002 /* Teach state 1 complete */
#define PEER_F_TEACH_STAGE2 0x00000004 /* Teach stage 2 complete */
#define PEER_F_TEACH_FINISHED 0x00000008 /* Teach conclude, (wait for confirm) */
#define PEER_F_TEACH_COMPLETE 0x00000010 /* All that we know already taught to current peer, used only for a local peer */
#define PEER_F_LEARN_ASSIGN 0x00000100 /* Current peer was assigned for a lesson */
#define PEER_F_LEARN_NOTUP2DATE 0x00000200 /* Learn from peer finished but peer is not up to date */
#define PEER_TEACH_RESET ~(PEER_F_TEACH_PROCESS|PEER_F_TEACH_STAGE1|PEER_F_TEACH_STAGE2|PEER_F_TEACH_FINISHED) /* PEER_F_TEACH_COMPLETE should never be reset */
#define PEER_LEARN_RESET ~(PEER_F_LEARN_ASSIGN|PEER_F_LEARN_NOTUP2DATE)
/**********************************/
/* Peer Session IO handler states */
/**********************************/
#define PEER_SESSION_ACCEPT 1000 /* Initial state for session create by an accept */
#define PEER_SESSION_GETVERSION 1001 /* Validate supported protocol version*/
#define PEER_SESSION_GETHOST 1002 /* Validate host ID correspond to local host id */
#define PEER_SESSION_GETPEER 1003 /* Validate peer ID correspond to a known remote peer id */
#define PEER_SESSION_GETTABLE 1004 /* Search into registered table for a table with same id and
validate type and size */
#define PEER_SESSION_SENDSUCCESS 1005 /* Send ret code 200 (success) and wait for message */
/* next state is WAITMSG */
#define PEER_SESSION_CONNECT 2000 /* Initial state for session create on a connect,
push presentation into buffer */
#define PEER_SESSION_GETSTATUS 2001 /* Wait for the welcome message */
#define PEER_SESSION_WAITMSG 2002 /* Wait for datamessages*/
/* loop on WAITMSG */
#define PEER_SESSION_EXIT 10000 /* Exit with status code */
#define PEER_SESSION_END 10001 /* Killed session */
/* session ended */
/**********************************/
/* Peer Session status code */
/**********************************/
#define PEER_SESSION_CONNECTCODE 100 /* connect in progress */
#define PEER_SESSION_CONNECTEDCODE 110 /* tcp connect success */
#define PEER_SESSION_SUCCESSCODE 200 /* accept or connect successful */
#define PEER_SESSION_TRYAGAIN 300 /* try again later */
#define PEER_SESSION_ERRPROTO 501 /* error protocol */
#define PEER_SESSION_ERRVERSION 502 /* unknown protocol version */
#define PEER_SESSION_ERRHOST 503 /* bad host name */
#define PEER_SESSION_ERRPEER 504 /* unknown peer */
#define PEER_SESSION_ERRTYPE 505 /* table key type mismatch */
#define PEER_SESSION_ERRSIZE 506 /* table key size mismatch */
#define PEER_SESSION_ERRTABLE 507 /* unknown table */
#define PEER_SESSION_PROTO_NAME "HAProxyS"
struct peers *peers = NULL;
static void peer_session_forceshutdown(struct session * session);
/*
* This prepare the data update message of the stick session <ts>, <ps> is the the peer session
* where the data going to be pushed, <msg> is a buffer of <size> to recieve data message content
*/
static int peer_prepare_datamsg(struct stksess *ts, struct peer_session *ps, char *msg, size_t size)
{
uint32_t netinteger;
int len;
/* construct message */
if (ps->lastpush && ts->upd.key > ps->lastpush && (ts->upd.key - ps->lastpush) <= 127) {
msg[0] = 0x80 + ts->upd.key - ps->lastpush;
len = sizeof(char);
}
else {
msg[0] = 'D';
netinteger = htonl(ts->upd.key);
memcpy(&msg[sizeof(char)], &netinteger, sizeof(netinteger));
len = sizeof(char) + sizeof(netinteger);
}
if (ps->table->table->type == STKTABLE_TYPE_STRING) {
int stlen = strlen((char *)ts->key.key);
netinteger = htonl(strlen((char *)ts->key.key));
memcpy(&msg[len], &netinteger, sizeof(netinteger));
memcpy(&msg[len+sizeof(netinteger)], ts->key.key, stlen);
len += sizeof(netinteger) + stlen;
}
else if (ps->table->table->type == STKTABLE_TYPE_INTEGER) {
netinteger = htonl(*((uint32_t *)ts->key.key));
memcpy(&msg[len], &netinteger, sizeof(netinteger));
len += sizeof(netinteger);
}
else {
memcpy(&msg[len], ts->key.key, ps->table->table->key_size);
len += ps->table->table->key_size;
}
if (stktable_data_ptr(ps->table->table, ts, STKTABLE_DT_SERVER_ID))
netinteger = htonl(stktable_data_cast(stktable_data_ptr(ps->table->table, ts, STKTABLE_DT_SERVER_ID), server_id));
else
netinteger = 0;
memcpy(&msg[len], &netinteger , sizeof(netinteger));
len += sizeof(netinteger);
return len;
}
/*
* Callback to release a session with a peer
*/
static void peer_session_release(struct stream_interface *si)
{
struct task *t = (struct task *)si->owner;
struct session *s = (struct session *)t->context;
struct peer_session *ps = (struct peer_session *)si->applet.private;
/* si->applet.private is not a peer session */
if (si->applet.st0 < PEER_SESSION_SENDSUCCESS)
return;
/* peer session identified */
if (ps) {
if (ps->session == s) {
ps->session = NULL;
if (ps->flags & PEER_F_LEARN_ASSIGN) {
/* unassign current peer for learning */
ps->flags &= ~(PEER_F_LEARN_ASSIGN);
ps->table->flags &= ~(SHTABLE_F_RESYNC_ASSIGN|SHTABLE_F_RESYNC_PROCESS);
/* reschedule a resync */
ps->table->resync_timeout = tick_add(now_ms, MS_TO_TICKS(5000));
}
/* reset teaching and learning flags to 0 */
ps->flags &= PEER_TEACH_RESET;
ps->flags &= PEER_LEARN_RESET;
}
task_wakeup(ps->table->sync_task, TASK_WOKEN_MSG);
}
}
/*
* IO Handler to handle message exchance with a peer
*/
static void peer_io_handler(struct stream_interface *si)
{
struct task *t= (struct task *)si->owner;
struct session *s = (struct session *)t->context;
struct peers *curpeers = (struct peers *)s->fe->parent;
int reql = 0;
int repl = 0;
while (1) {
switchstate:
switch(si->applet.st0) {
case PEER_SESSION_ACCEPT:
si->applet.private = NULL;
si->applet.st0 = PEER_SESSION_GETVERSION;
/* fall through */
case PEER_SESSION_GETVERSION:
reql = bo_getline(si->ob, trash, trashlen);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
if (trash[reql-1] != '\n') {
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
else if (reql > 1 && (trash[reql-2] == '\r'))
trash[reql-2] = 0;
else
trash[reql-1] = 0;
bo_skip(si->ob, reql);
/* test version */
if (strcmp(PEER_SESSION_PROTO_NAME " 1.0", trash) != 0) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRVERSION;
/* test protocol */
if (strncmp(PEER_SESSION_PROTO_NAME " ", trash, strlen(PEER_SESSION_PROTO_NAME)+1) != 0)
si->applet.st1 = PEER_SESSION_ERRPROTO;
goto switchstate;
}
si->applet.st0 = PEER_SESSION_GETHOST;
/* fall through */
case PEER_SESSION_GETHOST:
reql = bo_getline(si->ob, trash, trashlen);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
if (trash[reql-1] != '\n') {
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
else if (reql > 1 && (trash[reql-2] == '\r'))
trash[reql-2] = 0;
else
trash[reql-1] = 0;
bo_skip(si->ob, reql);
/* test hostname match */
if (strcmp(localpeer, trash) != 0) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRHOST;
goto switchstate;
}
si->applet.st0 = PEER_SESSION_GETPEER;
/* fall through */
case PEER_SESSION_GETPEER: {
struct peer *curpeer;
char *p;
reql = bo_getline(si->ob, trash, trashlen);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
if (trash[reql-1] != '\n') {
/* Incomplete line, we quit */
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
else if (reql > 1 && (trash[reql-2] == '\r'))
trash[reql-2] = 0;
else
trash[reql-1] = 0;
bo_skip(si->ob, reql);
/* parse line "<peer name> <pid>" */
p = strchr(trash, ' ');
if (!p) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRPROTO;
goto switchstate;
}
*p = 0;
/* lookup known peer */
for (curpeer = curpeers->remote; curpeer; curpeer = curpeer->next) {
if (strcmp(curpeer->id, trash) == 0)
break;
}
/* if unknown peer */
if (!curpeer) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRPEER;
goto switchstate;
}
si->applet.private = curpeer;
si->applet.st0 = PEER_SESSION_GETTABLE;
/* fall through */
}
case PEER_SESSION_GETTABLE: {
struct peer *curpeer = (struct peer *)si->applet.private;
struct shared_table *st;
struct peer_session *ps = NULL;
unsigned long key_type;
size_t key_size;
char *p;
reql = bo_getline(si->ob, trash, trashlen);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
goto out;
si->applet.private = NULL;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* Re init si->applet.private to null, to handle correctly a release case */
si->applet.private = NULL;
if (trash[reql-1] != '\n') {
/* Incomplete line, we quit */
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
else if (reql > 1 && (trash[reql-2] == '\r'))
trash[reql-2] = 0;
else
trash[reql-1] = 0;
bo_skip(si->ob, reql);
/* Parse line "<table name> <type> <size>" */
p = strchr(trash, ' ');
if (!p) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRPROTO;
goto switchstate;
}
*p = 0;
key_type = (unsigned long)atol(p+1);
p = strchr(p+1, ' ');
if (!p) {
si->applet.private = NULL;
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRPROTO;
goto switchstate;
}
key_size = (size_t)atoi(p);
for (st = curpeers->tables; st; st = st->next) {
/* If table name matches */
if (strcmp(st->table->id, trash) == 0) {
/* If key size mismatches */
if (key_size != st->table->key_size) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRSIZE;
goto switchstate;
}
/* If key type mismatches */
if (key_type != st->table->type) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRTYPE;
goto switchstate;
}
/* lookup peer session of current peer */
for (ps = st->sessions; ps; ps = ps->next) {
if (ps->peer == curpeer) {
/* If session already active, replaced by new one */
if (ps->session && ps->session != s) {
if (ps->peer->local) {
/* Local connection, reply a retry */
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_TRYAGAIN;
goto switchstate;
}
peer_session_forceshutdown(ps->session);
}
ps->session = s;
break;
}
}
break;
}
}
/* If table not found */
if (!st){
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRTABLE;
goto switchstate;
}
/* If no peer session for current peer */
if (!ps) {
si->applet.st0 = PEER_SESSION_EXIT;
si->applet.st1 = PEER_SESSION_ERRPEER;
goto switchstate;
}
si->applet.private = ps;
si->applet.st0 = PEER_SESSION_SENDSUCCESS;
/* fall through */
}
case PEER_SESSION_SENDSUCCESS:{
struct peer_session *ps = (struct peer_session *)si->applet.private;
repl = snprintf(trash, trashlen, "%d\n", PEER_SESSION_SUCCESSCODE);
repl = bi_putblk(si->ib, trash, repl);
if (repl <= 0) {
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* Register status code */
ps->statuscode = PEER_SESSION_SUCCESSCODE;
/* Awake main task */
task_wakeup(ps->table->sync_task, TASK_WOKEN_MSG);
/* Init cursors */
ps->teaching_origin =ps->lastpush = ps->lastack = ps->pushack = 0;
ps->pushed = ps->update;
/* Init confirm counter */
ps->confirm = 0;
/* reset teaching and learning flags to 0 */
ps->flags &= PEER_TEACH_RESET;
ps->flags &= PEER_LEARN_RESET;
/* if current peer is local */
if (ps->peer->local) {
/* if table need resyncfrom local and no process assined */
if ((ps->table->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMLOCAL &&
!(ps->table->flags & SHTABLE_F_RESYNC_ASSIGN)) {
/* assign local peer for a lesson, consider lesson already requested */
ps->flags |= PEER_F_LEARN_ASSIGN;
ps->table->flags |= (SHTABLE_F_RESYNC_ASSIGN|SHTABLE_F_RESYNC_PROCESS);
}
}
else if ((ps->table->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMREMOTE &&
!(ps->table->flags & SHTABLE_F_RESYNC_ASSIGN)) {
/* assign peer for a lesson */
ps->flags |= PEER_F_LEARN_ASSIGN;
ps->table->flags |= SHTABLE_F_RESYNC_ASSIGN;
}
/* switch to waiting message state */
si->applet.st0 = PEER_SESSION_WAITMSG;
goto switchstate;
}
case PEER_SESSION_CONNECT: {
struct peer_session *ps = (struct peer_session *)si->applet.private;
/* Send headers */
repl = snprintf(trash, trashlen,
PEER_SESSION_PROTO_NAME " 1.0\n%s\n%s %d\n%s %lu %d\n",
ps->peer->id,
localpeer,
(int)getpid(),
ps->table->table->id,
ps->table->table->type,
(int)ps->table->table->key_size);
if (repl >= trashlen) {
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
repl = bi_putblk(si->ib, trash, repl);
if (repl <= 0) {
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* switch to the waiting statuscode state */
si->applet.st0 = PEER_SESSION_GETSTATUS;
/* fall through */
}
case PEER_SESSION_GETSTATUS: {
struct peer_session *ps = (struct peer_session *)si->applet.private;
if (si->ib->flags & BF_WRITE_PARTIAL)
ps->statuscode = PEER_SESSION_CONNECTEDCODE;
reql = bo_getline(si->ob, trash, trashlen);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
if (trash[reql-1] != '\n') {
/* Incomplete line, we quit */
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
else if (reql > 1 && (trash[reql-2] == '\r'))
trash[reql-2] = 0;
else
trash[reql-1] = 0;
bo_skip(si->ob, reql);
/* Register status code */
ps->statuscode = atoi(trash);
/* Awake main task */
task_wakeup(ps->table->sync_task, TASK_WOKEN_MSG);
/* If status code is success */
if (ps->statuscode == PEER_SESSION_SUCCESSCODE) {
/* Init cursors */
ps->teaching_origin = ps->lastpush = ps->lastack = ps->pushack = 0;
ps->pushed = ps->update;
/* Init confirm counter */
ps->confirm = 0;
/* reset teaching and learning flags to 0 */
ps->flags &= PEER_TEACH_RESET;
ps->flags &= PEER_LEARN_RESET;
/* If current peer is local */
if (ps->peer->local) {
/* Init cursors to push a resync */
ps->teaching_origin = ps->pushed = ps->table->table->update;
/* flag to start to teach lesson */
ps->flags |= PEER_F_TEACH_PROCESS;
}
else if ((ps->table->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMREMOTE &&
!(ps->table->flags & SHTABLE_F_RESYNC_ASSIGN)) {
/* If peer is remote and resync from remote is needed,
and no peer currently assigned */
/* assign peer for a lesson */
ps->flags |= PEER_F_LEARN_ASSIGN;
ps->table->flags |= SHTABLE_F_RESYNC_ASSIGN;
}
}
else {
/* Status code is not success, abort */
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
si->applet.st0 = PEER_SESSION_WAITMSG;
/* fall through */
}
case PEER_SESSION_WAITMSG: {
struct peer_session *ps = (struct peer_session *)si->applet.private;
char c;
int totl = 0;
reql = bo_getblk(si->ob, (char *)&c, sizeof(c), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
/* nothing to read */
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
if ((c & 0x80) || (c == 'D')) {
/* Here we have data message */
unsigned int pushack;
struct stksess *ts;
struct stksess *newts;
struct stktable_key stkey;
int srvid;
uint32_t netinteger;
/* Compute update remote version */
if (c & 0x80) {
pushack = ps->pushack + (unsigned int)(c & 0x7F);
}
else {
reql = bo_getblk(si->ob, (char *)&netinteger, sizeof(netinteger), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
pushack = ntohl(netinteger);
}
/* read key */
if (ps->table->table->type == STKTABLE_TYPE_STRING) {
/* type string */
stkey.key = stkey.data.buf;
reql = bo_getblk(si->ob, (char *)&netinteger, sizeof(netinteger), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
stkey.key_len = ntohl(netinteger);
reql = bo_getblk(si->ob, stkey.key, stkey.key_len, totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
}
else if (ps->table->table->type == STKTABLE_TYPE_INTEGER) {
/* type integer */
stkey.key_len = (size_t)-1;
stkey.key = &stkey.data.integer;
reql = bo_getblk(si->ob, (char *)&netinteger, sizeof(netinteger), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
stkey.data.integer = ntohl(netinteger);
}
else {
/* type ip */
stkey.key_len = (size_t)-1;
stkey.key = stkey.data.buf;
reql = bo_getblk(si->ob, (char *)&stkey.data.buf, ps->table->table->key_size, totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
}
/* read server id */
reql = bo_getblk(si->ob, (char *)&netinteger, sizeof(netinteger), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
srvid = ntohl(netinteger);
/* update entry */
newts = stksess_new(ps->table->table, &stkey);
if (newts) {
/* lookup for existing entry */
ts = stktable_lookup(ps->table->table, newts);
if (ts) {
/* the entry already exist, we can free ours */
stktable_touch(ps->table->table, ts, 0);
stksess_free(ps->table->table, newts);
}
else {
struct eb32_node *eb;
/* create new entry */
ts = stktable_store(ps->table->table, newts, 0);
ts->upd.key= (++ps->table->table->update)+(2^31);
eb = eb32_insert(&ps->table->table->updates, &ts->upd);
if (eb != &ts->upd) {
eb32_delete(eb);
eb32_insert(&ps->table->table->updates, &ts->upd);
}
}
/* update entry */
if (srvid && stktable_data_ptr(ps->table->table, ts, STKTABLE_DT_SERVER_ID))
stktable_data_cast(stktable_data_ptr(ps->table->table, ts, STKTABLE_DT_SERVER_ID), server_id) = srvid;
ps->pushack = pushack;
}
}
else if (c == 'R') {
/* Reset message: remote need resync */
/* reinit counters for a resync */
ps->lastpush = 0;
ps->teaching_origin = ps->pushed = ps->table->table->update;
/* reset teaching flags to 0 */
ps->flags &= PEER_TEACH_RESET;
/* flag to start to teach lesson */
ps->flags |= PEER_F_TEACH_PROCESS;
}
else if (c == 'F') {
/* Finish message, all known updates have been pushed by remote */
/* and remote is up to date */
/* If resync is in progress with remote peer */
if (ps->flags & PEER_F_LEARN_ASSIGN) {
/* unassign current peer for learning */
ps->flags &= ~PEER_F_LEARN_ASSIGN;
ps->table->flags &= ~(SHTABLE_F_RESYNC_ASSIGN|SHTABLE_F_RESYNC_PROCESS);
/* Consider table is now up2date, resync resync no more needed from local neither remote */
ps->table->flags |= (SHTABLE_F_RESYNC_LOCAL|SHTABLE_F_RESYNC_REMOTE);
}
/* Increase confirm counter to launch a confirm message */
ps->confirm++;
}
else if (c == 'c') {
/* confirm message, remote peer is now up to date with us */
/* If stopping state */
if (stopping) {
/* Close session, push resync no more needed */
ps->flags |= PEER_F_TEACH_COMPLETE;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* reset teaching flags to 0 */
ps->flags &= PEER_TEACH_RESET;
}
else if (c == 'C') {
/* Continue message, all known updates have been pushed by remote */
/* but remote is not up to date */
/* If resync is in progress with current peer */
if (ps->flags & PEER_F_LEARN_ASSIGN) {
/* unassign current peer */
ps->flags &= ~PEER_F_LEARN_ASSIGN;
ps->table->flags &= ~(SHTABLE_F_RESYNC_ASSIGN|SHTABLE_F_RESYNC_PROCESS);
/* flag current peer is not up 2 date to try from an other */
ps->flags |= PEER_F_LEARN_NOTUP2DATE;
/* reschedule a resync */
ps->table->resync_timeout = tick_add(now_ms, MS_TO_TICKS(5000));
task_wakeup(ps->table->sync_task, TASK_WOKEN_MSG);
}
ps->confirm++;
}
else if (c == 'A') {
/* ack message */
uint32_t netinteger;
reql = bo_getblk(si->ob, (char *)&netinteger, sizeof(netinteger), totl);
if (reql <= 0) { /* closed or EOL not found */
if (reql == 0) {
goto incomplete;
}
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
totl += reql;
/* Consider remote is up to date with "acked" version */
ps->update = ntohl(netinteger);
}
else {
/* Unknown message */
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* skip consumed message */
bo_skip(si->ob, totl);
/* loop on that state to peek next message */
continue;
incomplete:
/* Nothing to read, now we start to write */
/* Confirm finished or partial messages */
while (ps->confirm) {
/* There is a confirm messages to send */
repl = bi_putchr(si->ib, 'c');
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->confirm--;
}
/* Need to request a resync */
if ((ps->flags & PEER_F_LEARN_ASSIGN) &&
(ps->table->flags & SHTABLE_F_RESYNC_ASSIGN) &&
!(ps->table->flags & SHTABLE_F_RESYNC_PROCESS)) {
/* Current peer was elected to request a resync */
repl = bi_putchr(si->ib, 'R');
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->table->flags |= SHTABLE_F_RESYNC_PROCESS;
}
/* It remains some updates to ack */
if (ps->pushack != ps->lastack) {
uint32_t netinteger;
trash[0] = 'A';
netinteger = htonl(ps->pushack);
memcpy(&trash[1], &netinteger, sizeof(netinteger));
repl = bi_putblk(si->ib, trash, 1+sizeof(netinteger));
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->lastack = ps->pushack;
}
if (ps->flags & PEER_F_TEACH_PROCESS) {
/* current peer was requested for a lesson */
if (!(ps->flags & PEER_F_TEACH_STAGE1)) {
/* lesson stage 1 not complete */
struct eb32_node *eb;
eb = eb32_lookup_ge(&ps->table->table->updates, ps->pushed+1);
while (1) {
int msglen;
struct stksess *ts;
if (!eb) {
/* flag lesson stage1 complete */
ps->flags |= PEER_F_TEACH_STAGE1;
eb = eb32_first(&ps->table->table->updates);
if (eb)
ps->pushed = eb->key - 1;
break;
}
ts = eb32_entry(eb, struct stksess, upd);
msglen = peer_prepare_datamsg(ts, ps, trash, trashlen);
if (msglen) {
/* message to buffer */
repl = bi_putblk(si->ib, trash, msglen);
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->lastpush = ps->pushed = ts->upd.key;
}
eb = eb32_next(eb);
}
} /* !TEACH_STAGE1 */
if (!(ps->flags & PEER_F_TEACH_STAGE2)) {
/* lesson stage 2 not complete */
struct eb32_node *eb;
eb = eb32_lookup_ge(&ps->table->table->updates, ps->pushed+1);
while (1) {
int msglen;
struct stksess *ts;
if (!eb || eb->key > ps->teaching_origin) {
/* flag lesson stage1 complete */
ps->flags |= PEER_F_TEACH_STAGE2;
ps->pushed = ps->teaching_origin;
break;
}
ts = eb32_entry(eb, struct stksess, upd);
msglen = peer_prepare_datamsg(ts, ps, trash, trashlen);
if (msglen) {
/* message to buffer */
repl = bi_putblk(si->ib, trash, msglen);
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->lastpush = ps->pushed = ts->upd.key;
}
eb = eb32_next(eb);
}
} /* !TEACH_STAGE2 */
if (!(ps->flags & PEER_F_TEACH_FINISHED)) {
/* process final lesson message */
repl = bi_putchr(si->ib, ((ps->table->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FINISHED) ? 'F' : 'C');
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
/* flag finished message sent */
ps->flags |= PEER_F_TEACH_FINISHED;
} /* !TEACH_FINISHED */
} /* TEACH_PROCESS */
if (!(ps->flags & PEER_F_LEARN_ASSIGN) &&
(int)(ps->pushed - ps->table->table->localupdate) < 0) {
/* Push local updates, only if no learning in progress (to avoid ping-pong effects) */
struct eb32_node *eb;
eb = eb32_lookup_ge(&ps->table->table->updates, ps->pushed+1);
while (1) {
int msglen;
struct stksess *ts;
/* push local updates */
if (!eb) {
eb = eb32_first(&ps->table->table->updates);
if (!eb || ((int)(eb->key - ps->pushed) <= 0)) {
ps->pushed = ps->table->table->localupdate;
break;
}
}
if ((int)(eb->key - ps->table->table->localupdate) > 0) {
ps->pushed = ps->table->table->localupdate;
break;
}
ts = eb32_entry(eb, struct stksess, upd);
msglen = peer_prepare_datamsg(ts, ps, trash, trashlen);
if (msglen) {
/* message to buffer */
repl = bi_putblk(si->ib, trash, msglen);
if (repl <= 0) {
/* no more write possible */
if (repl == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
goto switchstate;
}
ps->lastpush = ps->pushed = ts->upd.key;
}
eb = eb32_next(eb);
}
} /* ! LEARN_ASSIGN */
/* noting more to do */
goto out;
}
case PEER_SESSION_EXIT:
repl = snprintf(trash, trashlen, "%d\n", si->applet.st1);
if (bi_putblk(si->ib, trash, repl) == -1)
goto out;
si->applet.st0 = PEER_SESSION_END;
/* fall through */
case PEER_SESSION_END: {
si->sock.shutw(si);
si->sock.shutr(si);
si->ib->flags |= BF_READ_NULL;
goto quit;
}
}
}
out:
si->sock.update(si);
si->ob->flags |= BF_READ_DONTWAIT;
/* we don't want to expire timeouts while we're processing requests */
si->ib->rex = TICK_ETERNITY;
si->ob->wex = TICK_ETERNITY;
quit:
return;
}
static struct si_applet peer_applet = {
.name = "<PEER>", /* used for logging */
.fct = peer_io_handler,
.release = peer_session_release,
};
/*
* Use this function to force a close of a peer session
*/
static void peer_session_forceshutdown(struct session * session)
{
struct stream_interface *oldsi;
if (session->si[0].target.type == TARG_TYPE_APPLET &&
session->si[0].target.ptr.a == &peer_applet) {
oldsi = &session->si[0];
}
else {
oldsi = &session->si[1];
}
/* call release to reinit resync states if needed */
peer_session_release(oldsi);
oldsi->applet.st0 = PEER_SESSION_END;
oldsi->applet.private = NULL;
task_wakeup(session->task, TASK_WOKEN_MSG);
}
/*
* this function is called on a read event from a listen socket, corresponding
* to an accept. It tries to accept as many connections as possible.
* It returns a positive value upon success, 0 if the connection needs to be
* closed and ignored, or a negative value upon critical failure.
*/
int peer_accept(struct session *s)
{
/* we have a dedicated I/O handler for the stats */
stream_int_register_handler(&s->si[1], &peer_applet);
copy_target(&s->target, &s->si[1].target); // for logging only
s->si[1].applet.private = s;
s->si[1].applet.st0 = PEER_SESSION_ACCEPT;
tv_zero(&s->logs.tv_request);
s->logs.t_queue = 0;
s->logs.t_connect = 0;
s->logs.t_data = 0;
s->logs.t_close = 0;
s->logs.bytes_in = s->logs.bytes_out = 0;
s->logs.prx_queue_size = 0;/* we get the number of pending conns before us */
s->logs.srv_queue_size = 0; /* we will get this number soon */
s->req->flags |= BF_READ_DONTWAIT; /* we plan to read small requests */
if (s->listener->timeout) {
s->req->rto = *s->listener->timeout;
s->rep->wto = *s->listener->timeout;
}
return 1;
}
/*
* Create a new peer session in assigned state (connect will start automatically)
*/
static struct session *peer_session_create(struct peer *peer, struct peer_session *ps)
{
struct listener *l = ((struct proxy *)peer->peers->peers_fe)->listen;
struct proxy *p = (struct proxy *)l->frontend; /* attached frontend */
struct session *s;
struct http_txn *txn;
struct task *t;
if ((s = pool_alloc2(pool2_session)) == NULL) { /* disable this proxy for a while */
Alert("out of memory in event_accept().\n");
goto out_close;
}
LIST_ADDQ(&sessions, &s->list);
LIST_INIT(&s->back_refs);
s->flags = SN_ASSIGNED|SN_ADDR_SET;
s->term_trace = 0;
/* if this session comes from a known monitoring system, we want to ignore
* it as soon as possible, which means closing it immediately for TCP.
*/
if ((t = task_new()) == NULL) { /* disable this proxy for a while */
Alert("out of memory in event_accept().\n");
goto out_free_session;
}
ps->reconnect = tick_add(now_ms, MS_TO_TICKS(5000));
ps->statuscode = PEER_SESSION_CONNECTCODE;
t->process = l->handler;
t->context = s;
t->nice = l->nice;
memcpy(&s->si[1].addr.to, &peer->addr, sizeof(s->si[1].addr.to));
s->task = t;
s->listener = l;
/* Note: initially, the session's backend points to the frontend.
* This changes later when switching rules are executed or
* when the default backend is assigned.
*/
s->be = s->fe = p;
s->req = s->rep = NULL; /* will be allocated later */
s->si[0].fd = -1;
s->si[0].owner = t;
s->si[0].state = s->si[0].prev_state = SI_ST_EST;
s->si[0].err_type = SI_ET_NONE;
s->si[0].err_loc = NULL;
s->si[0].proto = NULL;
s->si[0].release = NULL;
s->si[0].send_proxy_ofs = 0;
set_target_client(&s->si[0].target);
s->si[0].exp = TICK_ETERNITY;
s->si[0].flags = SI_FL_NONE;
if (s->fe->options2 & PR_O2_INDEPSTR)
s->si[0].flags |= SI_FL_INDEP_STR;
s->si[0].applet.private = (void *)ps;
s->si[0].applet.st0 = PEER_SESSION_CONNECT;
stream_int_register_handler(&s->si[0], &peer_applet);
s->si[1].fd = -1; /* just to help with debugging */
s->si[1].owner = t;
s->si[1].state = s->si[1].prev_state = SI_ST_ASS;
s->si[1].conn_retries = p->conn_retries;
s->si[1].err_type = SI_ET_NONE;
s->si[1].err_loc = NULL;
s->si[1].proto = peer->proto;
s->si[1].release = NULL;
s->si[1].send_proxy_ofs = 0;
set_target_proxy(&s->si[1].target, s->be);
stream_interface_prepare(&s->si[1], &sock_raw);
s->si[1].exp = TICK_ETERNITY;
s->si[1].flags = SI_FL_NONE;
if (s->be->options2 & PR_O2_INDEPSTR)
s->si[1].flags |= SI_FL_INDEP_STR;
session_init_srv_conn(s);
set_target_proxy(&s->target, s->be);
s->pend_pos = NULL;
/* init store persistence */
s->store_count = 0;
s->stkctr1_entry = NULL;
s->stkctr2_entry = NULL;
/* FIXME: the logs are horribly complicated now, because they are
* defined in <p>, <p>, and later <be> and <be>.
*/
s->logs.logwait = 0;
s->do_log = NULL;
/* default error reporting function, may be changed by analysers */
s->srv_error = default_srv_error;
s->uniq_id = 0;
s->unique_id = NULL;
txn = &s->txn;
/* Those variables will be checked and freed if non-NULL in
* session.c:session_free(). It is important that they are
* properly initialized.
*/
txn->sessid = NULL;
txn->srv_cookie = NULL;
txn->cli_cookie = NULL;
txn->uri = NULL;
txn->req.cap = NULL;
txn->rsp.cap = NULL;
txn->hdr_idx.v = NULL;
txn->hdr_idx.size = txn->hdr_idx.used = 0;
if ((s->req = pool_alloc2(pool2_buffer)) == NULL)
goto out_fail_req; /* no memory */
s->req->size = global.tune.bufsize;
buffer_init(s->req);
s->req->prod = &s->si[0];
s->req->cons = &s->si[1];
s->si[0].ib = s->si[1].ob = s->req;
s->req->flags |= BF_READ_ATTACHED; /* the producer is already connected */
/* activate default analysers enabled for this listener */
s->req->analysers = l->analysers;
/* note: this should not happen anymore since there's always at least the switching rules */
if (!s->req->analysers) {
buffer_auto_connect(s->req);/* don't wait to establish connection */
buffer_auto_close(s->req);/* let the producer forward close requests */
}
s->req->rto = s->fe->timeout.client;
s->req->wto = s->be->timeout.server;
if ((s->rep = pool_alloc2(pool2_buffer)) == NULL)
goto out_fail_rep; /* no memory */
s->rep->size = global.tune.bufsize;
buffer_init(s->rep);
s->rep->prod = &s->si[1];
s->rep->cons = &s->si[0];
s->si[0].ob = s->si[1].ib = s->rep;
s->rep->rto = s->be->timeout.server;
s->rep->wto = s->fe->timeout.client;
s->req->rex = TICK_ETERNITY;
s->req->wex = TICK_ETERNITY;
s->req->analyse_exp = TICK_ETERNITY;
s->rep->rex = TICK_ETERNITY;
s->rep->wex = TICK_ETERNITY;
s->rep->analyse_exp = TICK_ETERNITY;
t->expire = TICK_ETERNITY;
s->rep->flags |= BF_READ_DONTWAIT;
/* it is important not to call the wakeup function directly but to
* pass through task_wakeup(), because this one knows how to apply
* priorities to tasks.
*/
task_wakeup(t, TASK_WOKEN_INIT);
l->nbconn++; /* warning! right now, it's up to the handler to decrease this */
p->feconn++;/* beconn will be increased later */
jobs++;
if (!(s->listener->options & LI_O_UNLIMITED))
actconn++;
totalconn++;
return s;
/* Error unrolling */
out_fail_rep:
pool_free2(pool2_buffer, s->req);
out_fail_req:
task_free(t);
out_free_session:
LIST_DEL(&s->list);
pool_free2(pool2_session, s);
out_close:
return s;
}
/*
* Task processing function to manage re-connect and peer session
* tasks wakeup on local update.
*/
static struct task *process_peer_sync(struct task * task)
{
struct shared_table *st = (struct shared_table *)task->context;
struct peer_session *ps;
task->expire = TICK_ETERNITY;
if (!stopping) {
/* Normal case (not soft stop)*/
if (((st->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMLOCAL) &&
(!nb_oldpids || tick_is_expired(st->resync_timeout, now_ms)) &&
!(st->flags & SHTABLE_F_RESYNC_ASSIGN)) {
/* Resync from local peer needed
no peer was assigned for the lesson
and no old local peer found
or resync timeout expire */
/* flag no more resync from local, to try resync from remotes */
st->flags |= SHTABLE_F_RESYNC_LOCAL;
/* reschedule a resync */
st->resync_timeout = tick_add(now_ms, MS_TO_TICKS(5000));
}
/* For each session */
for (ps = st->sessions; ps; ps = ps->next) {
/* For each remote peers */
if (!ps->peer->local) {
if (!ps->session) {
/* no active session */
if (ps->statuscode == 0 ||
ps->statuscode == PEER_SESSION_SUCCESSCODE ||
((ps->statuscode == PEER_SESSION_CONNECTCODE ||
ps->statuscode == PEER_SESSION_CONNECTEDCODE) &&
tick_is_expired(ps->reconnect, now_ms))) {
/* connection never tried
* or previous session established with success
* or previous session failed during connection
* and reconnection timer is expired */
/* retry a connect */
ps->session = peer_session_create(ps->peer, ps);
}
else if (ps->statuscode == PEER_SESSION_CONNECTCODE ||
ps->statuscode == PEER_SESSION_CONNECTEDCODE) {
/* If previous session failed during connection
* but reconnection timer is not expired */
/* reschedule task for reconnect */
task->expire = tick_first(task->expire, ps->reconnect);
}
/* else do nothing */
} /* !ps->session */
else if (ps->statuscode == PEER_SESSION_SUCCESSCODE) {
/* current session is active and established */
if (((st->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMREMOTE) &&
!(st->flags & SHTABLE_F_RESYNC_ASSIGN) &&
!(ps->flags & PEER_F_LEARN_NOTUP2DATE)) {
/* Resync from a remote is needed
* and no peer was assigned for lesson
* and current peer may be up2date */
/* assign peer for the lesson */
ps->flags |= PEER_F_LEARN_ASSIGN;
st->flags |= SHTABLE_F_RESYNC_ASSIGN;
/* awake peer session task to handle a request of resync */
task_wakeup(ps->session->task, TASK_WOKEN_MSG);
}
else if ((int)(ps->pushed - ps->table->table->localupdate) < 0) {
/* awake peer session task to push local updates */
task_wakeup(ps->session->task, TASK_WOKEN_MSG);
}
/* else do nothing */
} /* SUCCESSCODE */
} /* !ps->peer->local */
} /* for */
/* Resync from remotes expired: consider resync is finished */
if (((st->flags & SHTABLE_RESYNC_STATEMASK) == SHTABLE_RESYNC_FROMREMOTE) &&
!(st->flags & SHTABLE_F_RESYNC_ASSIGN) &&
tick_is_expired(st->resync_timeout, now_ms)) {
/* Resync from remote peer needed
* no peer was assigned for the lesson
* and resync timeout expire */
/* flag no more resync from remote, consider resync is finished */
st->flags |= SHTABLE_F_RESYNC_REMOTE;
}
if ((st->flags & SHTABLE_RESYNC_STATEMASK) != SHTABLE_RESYNC_FINISHED) {
/* Resync not finished*/
/* reschedule task to resync timeout, to ended resync if needed */
task->expire = tick_first(task->expire, st->resync_timeout);
}
} /* !stopping */
else {
/* soft stop case */
if (task->state & TASK_WOKEN_SIGNAL) {
/* We've just recieved the signal */
if (!(st->flags & SHTABLE_F_DONOTSTOP)) {
/* add DO NOT STOP flag if not present */
jobs++;
st->flags |= SHTABLE_F_DONOTSTOP;
}
/* disconnect all connected peers */
for (ps = st->sessions; ps; ps = ps->next) {
if (ps->session) {
peer_session_forceshutdown(ps->session);
ps->session = NULL;
}
}
}
ps = st->local_session;
if (ps->flags & PEER_F_TEACH_COMPLETE) {
if (st->flags & SHTABLE_F_DONOTSTOP) {
/* resync of new process was complete, current process can die now */
jobs--;
st->flags &= ~SHTABLE_F_DONOTSTOP;
}
}
else if (!ps->session) {
/* If session is not active */
if (ps->statuscode == 0 ||
ps->statuscode == PEER_SESSION_SUCCESSCODE ||
ps->statuscode == PEER_SESSION_CONNECTEDCODE ||
ps->statuscode == PEER_SESSION_TRYAGAIN) {
/* connection never tried
* or previous session was successfully established
* or previous session tcp connect success but init state incomplete
* or during previous connect, peer replies a try again statuscode */
/* connect to the peer */
ps->session = peer_session_create(ps->peer, ps);
}
else {
/* Other error cases */
if (st->flags & SHTABLE_F_DONOTSTOP) {
/* unable to resync new process, current process can die now */
jobs--;
st->flags &= ~SHTABLE_F_DONOTSTOP;
}
}
}
else if (ps->statuscode == PEER_SESSION_SUCCESSCODE &&
(int)(ps->pushed - ps->table->table->localupdate) < 0) {
/* current session active and established
awake session to push remaining local updates */
task_wakeup(ps->session->task, TASK_WOKEN_MSG);
}
} /* stopping */
/* Wakeup for re-connect */
return task;
}
/*
* Function used to register a table for sync on a group of peers
*
*/
void peers_register_table(struct peers *peers, struct stktable *table)
{
struct shared_table *st;
struct peer * curpeer;
struct peer_session *ps;
st = (struct shared_table *)calloc(1,sizeof(struct shared_table));
st->table = table;
st->next = peers->tables;
st->resync_timeout = tick_add(now_ms, MS_TO_TICKS(5000));
peers->tables = st;
for (curpeer = peers->remote; curpeer; curpeer = curpeer->next) {
ps = (struct peer_session *)calloc(1,sizeof(struct peer_session));
ps->table = st;
ps->peer = curpeer;
if (curpeer->local)
st->local_session = ps;
ps->next = st->sessions;
ps->reconnect = now_ms;
st->sessions = ps;
peers->peers_fe->maxconn += 3;
}
peers->peers_fe->listen->maxconn = peers->peers_fe->maxconn;
st->sync_task = task_new();
st->sync_task->process = process_peer_sync;
st->sync_task->expire = TICK_ETERNITY;
st->sync_task->context = (void *)st;
table->sync_task =st->sync_task;
signal_register_task(0, table->sync_task, 0);
task_wakeup(st->sync_task, TASK_WOKEN_INIT);
}
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