From 5bac4f06e8ebc81ed16ec93a0db8682e6a359608 Mon Sep 17 00:00:00 2001 From: "/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org" Date: Fri, 21 Dec 2007 18:04:49 +0000 Subject: o Use more appropriate names for the existing synchronization modes: o rename `persistent' mode to `alarm' o rename `nack' mode to `ftfw' o Now default synchronization mode is ftfw instead of alarm --- src/sync-notrack.c | 104 ----------------------------------------------------- 1 file changed, 104 deletions(-) delete mode 100644 src/sync-notrack.c (limited to 'src/sync-notrack.c') diff --git a/src/sync-notrack.c b/src/sync-notrack.c deleted file mode 100644 index 8588ecf..0000000 --- a/src/sync-notrack.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * (C) 2006-2007 by Pablo Neira Ayuso - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "conntrackd.h" -#include "sync.h" -#include "network.h" -#include "us-conntrack.h" -#include "alarm.h" - -static void refresher(struct alarm_list *a, void *data) -{ - int len; - struct nethdr *net; - struct us_conntrack *u = data; - - debug_ct(u->ct, "persistence update"); - - a->expires = random() % CONFIG(refresh) + 1; - net = BUILD_NETMSG(u->ct, NFCT_Q_UPDATE); - len = prepare_send_netmsg(STATE_SYNC(mcast_client), net); - mcast_buffered_send_netmsg(STATE_SYNC(mcast_client), net, len); -} - -static void cache_notrack_add(struct us_conntrack *u, void *data) -{ - struct alarm_list *alarm = data; - - init_alarm(alarm); - set_alarm_expiration(alarm, (random() % conf.refresh) + 1); - set_alarm_data(alarm, u); - set_alarm_function(alarm, refresher); - add_alarm(alarm); -} - -static void cache_notrack_update(struct us_conntrack *u, void *data) -{ - struct alarm_list *alarm = data; - mod_alarm(alarm, (random() % conf.refresh) + 1); -} - -static void cache_notrack_destroy(struct us_conntrack *u, void *data) -{ - struct alarm_list *alarm = data; - del_alarm(alarm); -} - -static struct cache_extra cache_notrack_extra = { - .size = sizeof(struct alarm_list), - .add = cache_notrack_add, - .update = cache_notrack_update, - .destroy = cache_notrack_destroy -}; - -static int notrack_recv(const struct nethdr *net) -{ - unsigned int exp_seq; - - /* - * Ignore error messages: Although this message type is not ever - * generated in notrack mode, we don't want to crash the daemon - * if someone nuts mixes nack and notrack. - */ - if (net->flags) - return 1; - - /* - * Multicast sequence tracking: we keep track of multicast messages - * although we don't do any explicit message recovery. So, why do - * we do sequence tracking? Just to let know the sysadmin. - * - * Let t be 1 < t < RefreshTime. To ensure consistency, conntrackd - * retransmit every t seconds a message with the state of a certain - * entry even if such entry did not change. This mechanism also - * provides passive resynchronization, in other words, there is - * no facility to request a full synchronization from new nodes that - * just joined the cluster, instead they just get resynchronized in - * RefreshTime seconds at worst case. - */ - mcast_track_seq(net->seq, &exp_seq); - - return 0; -} - -struct sync_mode notrack = { - .internal_cache_flags = LIFETIME, - .external_cache_flags = TIMER | LIFETIME, - .internal_cache_extra = &cache_notrack_extra, - .recv = notrack_recv, -}; -- cgit v1.2.3