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author/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org </C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org>2007-12-21 18:04:49 +0000
committer/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org </C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org>2007-12-21 18:04:49 +0000
commit5bac4f06e8ebc81ed16ec93a0db8682e6a359608 (patch)
treeb9d97d47f41e11f1c16f35a32347dbfdb404736f /src/sync-notrack.c
parent6d37133f5c98dadf6eb17f7f6854290f572dd4ad (diff)
downloadconntrack-tools-5bac4f06e8ebc81ed16ec93a0db8682e6a359608.tar.gz
conntrack-tools-5bac4f06e8ebc81ed16ec93a0db8682e6a359608.zip
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
Diffstat (limited to 'src/sync-notrack.c')
-rw-r--r--src/sync-notrack.c104
1 files changed, 0 insertions, 104 deletions
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 <pablo@netfilter.org>
- *
- * 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,
-};