From 584015727a3b88b46602b20077b46cd04f8b4ab3 Mon Sep 17 00:00:00 2001 From: Krzysztof Piotr Oledzki Date: Mon, 21 Jul 2008 10:01:34 -0700 Subject: netfilter: accounting rework: ct_extend + 64bit counters (v4) Initially netfilter has had 64bit counters for conntrack-based accounting, but it was changed in 2.6.14 to save memory. Unfortunately in-kernel 64bit counters are still required, for example for "connbytes" extension. However, 64bit counters waste a lot of memory and it was not possible to enable/disable it runtime. This patch: - reimplements accounting with respect to the extension infrastructure, - makes one global version of seq_print_acct() instead of two seq_print_counters(), - makes it possible to enable it at boot time (for CONFIG_SYSCTL/CONFIG_SYSFS=n), - makes it possible to enable/disable it at runtime by sysctl or sysfs, - extends counters from 32bit to 64bit, - renames ip_conntrack_counter -> nf_conn_counter, - enables accounting code unconditionally (no longer depends on CONFIG_NF_CT_ACCT), - set initial accounting enable state based on CONFIG_NF_CT_ACCT - removes buggy IPCT_COUNTER_FILLING event handling. If accounting is enabled newly created connections get additional acct extend. Old connections are not changed as it is not possible to add a ct_extend area to confirmed conntrack. Accounting is performed for all connections with acct extend regardless of a current state of "net.netfilter.nf_conntrack_acct". Signed-off-by: Krzysztof Piotr Oledzki Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- Documentation/feature-removal-schedule.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/feature-removal-schedule.txt') diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 86334b6f8238..9f73587219e8 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -336,3 +336,13 @@ When: After the only user (hal) has seen a release with the patches Why: Over 1K .text/.data size reduction, data is available in other ways (ioctls) Who: Johannes Berg + +--------------------------- + +What: CONFIG_NF_CT_ACCT +When: 2.6.29 +Why: Accounting can now be enabled/disabled without kernel recompilation. + Currently used only to set a default value for a feature that is also + controlled by a kernel/module/sysfs/sysctl parameter. +Who: Krzysztof Piotr Oledzki + -- cgit v1.2.3