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| author | Krzysztof Piotr Oledzki <ole@ans.pl> | 2008-07-21 10:01:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-21 10:10:58 -0700 |
| commit | 584015727a3b88b46602b20077b46cd04f8b4ab3 (patch) | |
| tree | a9b4ec18e2181e03ee24b59b30f7408bcbcf140c /net/netfilter/Kconfig | |
| parent | 07a7c1070ed382ad4562e3a0d453fd2001d92f7b (diff) | |
| download | linux-584015727a3b88b46602b20077b46cd04f8b4ab3.tar.bz2 | |
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 <ole@ans.pl>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/Kconfig')
| -rw-r--r-- | net/netfilter/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index 316c7af1d2b1..ee898e74808d 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -49,6 +49,15 @@ config NF_CT_ACCT Those counters can be used for flow-based accounting or the `connbytes' match. + Please note that currently this option only sets a default state. + You may change it at boot time with nf_conntrack.acct=0/1 kernel + paramater or by loading the nf_conntrack module with acct=0/1. + + You may also disable/enable it on a running system with: + sysctl net.netfilter.nf_conntrack_acct=0/1 + + This option will be removed in 2.6.29. + If unsure, say `N'. config NF_CONNTRACK_MARK |