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-rw-r--r--include/uapi/linux/netfilter/ipset/ip_set.h4
-rw-r--r--include/uapi/linux/netfilter/xt_AUDIT.h4
-rw-r--r--include/uapi/linux/netfilter/xt_connmark.h13
-rw-r--r--include/uapi/linux/netfilter/xt_osf.h14
-rw-r--r--net/ipv4/netfilter/ipt_rpfilter.c1
-rw-r--r--net/netfilter/nf_conntrack_core.c18
6 files changed, 17 insertions, 37 deletions
diff --git a/include/uapi/linux/netfilter/ipset/ip_set.h b/include/uapi/linux/netfilter/ipset/ip_set.h
index 6397d75899bc..79e5d68b87af 100644
--- a/include/uapi/linux/netfilter/ipset/ip_set.h
+++ b/include/uapi/linux/netfilter/ipset/ip_set.h
@@ -3,10 +3,6 @@
* Patrick Schaaf <bof@bof.de>
* Martin Josefsson <gandalf@wlug.westbo.se>
* Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@netfilter.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#ifndef _UAPI_IP_SET_H
#define _UAPI_IP_SET_H
diff --git a/include/uapi/linux/netfilter/xt_AUDIT.h b/include/uapi/linux/netfilter/xt_AUDIT.h
index 1b314e2f84ac..56a3f6092e0c 100644
--- a/include/uapi/linux/netfilter/xt_AUDIT.h
+++ b/include/uapi/linux/netfilter/xt_AUDIT.h
@@ -4,10 +4,6 @@
*
* (C) 2010-2011 Thomas Graf <tgraf@redhat.com>
* (C) 2010-2011 Red Hat, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#ifndef _XT_AUDIT_TARGET_H
diff --git a/include/uapi/linux/netfilter/xt_connmark.h b/include/uapi/linux/netfilter/xt_connmark.h
index f01c19b83a2b..41b578ccd03b 100644
--- a/include/uapi/linux/netfilter/xt_connmark.h
+++ b/include/uapi/linux/netfilter/xt_connmark.h
@@ -1,18 +1,13 @@
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/* Copyright (C) 2002,2004 MARA Systems AB <https://www.marasystems.com>
+ * by Henrik Nordstrom <hno@marasystems.com>
+ */
+
#ifndef _XT_CONNMARK_H
#define _XT_CONNMARK_H
#include <linux/types.h>
-/* Copyright (C) 2002,2004 MARA Systems AB <https://www.marasystems.com>
- * by Henrik Nordstrom <hno@marasystems.com>
- *
- * 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.
- */
-
enum {
XT_CONNMARK_SET = 0,
XT_CONNMARK_SAVE,
diff --git a/include/uapi/linux/netfilter/xt_osf.h b/include/uapi/linux/netfilter/xt_osf.h
index 6e466236ca4b..f1f097896bdf 100644
--- a/include/uapi/linux/netfilter/xt_osf.h
+++ b/include/uapi/linux/netfilter/xt_osf.h
@@ -1,20 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* Copyright (c) 2003+ Evgeniy Polyakov <johnpol@2ka.mxt.ru>
- *
- *
- * 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _XT_OSF_H
diff --git a/net/ipv4/netfilter/ipt_rpfilter.c b/net/ipv4/netfilter/ipt_rpfilter.c
index 8cd3224d913e..8183bbcabb4a 100644
--- a/net/ipv4/netfilter/ipt_rpfilter.c
+++ b/net/ipv4/netfilter/ipt_rpfilter.c
@@ -33,7 +33,6 @@ static bool rpfilter_lookup_reverse(struct net *net, struct flowi4 *fl4,
const struct net_device *dev, u8 flags)
{
struct fib_result res;
- int ret __maybe_unused;
if (fib_lookup(net, fl4, &res, FIB_LOOKUP_IGNORE_LINKSTATE))
return false;
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index c5851e1321e7..8208a28ea342 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -67,6 +67,7 @@ struct conntrack_gc_work {
struct delayed_work dwork;
u32 next_bucket;
u32 avg_timeout;
+ u32 count;
u32 start_time;
bool exiting;
bool early_drop;
@@ -85,10 +86,12 @@ static DEFINE_MUTEX(nf_conntrack_mutex);
/* clamp timeouts to this value (TCP unacked) */
#define GC_SCAN_INTERVAL_CLAMP (300ul * HZ)
-/* large initial bias so that we don't scan often just because we have
- * three entries with a 1s timeout.
+/* Initial bias pretending we have 100 entries at the upper bound so we don't
+ * wakeup often just because we have three entries with a 1s timeout while still
+ * allowing non-idle machines to wakeup more often when needed.
*/
-#define GC_SCAN_INTERVAL_INIT INT_MAX
+#define GC_SCAN_INITIAL_COUNT 100
+#define GC_SCAN_INTERVAL_INIT GC_SCAN_INTERVAL_MAX
#define GC_SCAN_MAX_DURATION msecs_to_jiffies(10)
#define GC_SCAN_EXPIRED_MAX (64000u / HZ)
@@ -1466,6 +1469,7 @@ static void gc_worker(struct work_struct *work)
unsigned int expired_count = 0;
unsigned long next_run;
s32 delta_time;
+ long count;
gc_work = container_of(work, struct conntrack_gc_work, dwork.work);
@@ -1475,10 +1479,12 @@ static void gc_worker(struct work_struct *work)
if (i == 0) {
gc_work->avg_timeout = GC_SCAN_INTERVAL_INIT;
+ gc_work->count = GC_SCAN_INITIAL_COUNT;
gc_work->start_time = start_time;
}
next_run = gc_work->avg_timeout;
+ count = gc_work->count;
end_time = start_time + GC_SCAN_MAX_DURATION;
@@ -1498,8 +1504,8 @@ static void gc_worker(struct work_struct *work)
hlist_nulls_for_each_entry_rcu(h, n, &ct_hash[i], hnnode) {
struct nf_conntrack_net *cnet;
- unsigned long expires;
struct net *net;
+ long expires;
tmp = nf_ct_tuplehash_to_ctrack(h);
@@ -1513,6 +1519,7 @@ static void gc_worker(struct work_struct *work)
gc_work->next_bucket = i;
gc_work->avg_timeout = next_run;
+ gc_work->count = count;
delta_time = nfct_time_stamp - gc_work->start_time;
@@ -1528,8 +1535,8 @@ static void gc_worker(struct work_struct *work)
}
expires = clamp(nf_ct_expires(tmp), GC_SCAN_INTERVAL_MIN, GC_SCAN_INTERVAL_CLAMP);
+ expires = (expires - (long)next_run) / ++count;
next_run += expires;
- next_run /= 2u;
if (nf_conntrack_max95 == 0 || gc_worker_skip_ct(tmp))
continue;
@@ -1570,6 +1577,7 @@ static void gc_worker(struct work_struct *work)
delta_time = nfct_time_stamp - end_time;
if (delta_time > 0 && i < hashsz) {
gc_work->avg_timeout = next_run;
+ gc_work->count = count;
gc_work->next_bucket = i;
next_run = 0;
goto early_exit;
generated by cgit (git 2.34.1) at 2025-12-25 21:21:28 +0000