diff options
| author | Florian Westphal <fw@strlen.de> | 2022-04-25 15:15:43 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-05-13 18:56:28 +0200 |
| commit | 90d1daa45849f272b701f29d6ca88b24743c7553 (patch) | |
| tree | d794a12f356af5a65ff9a49cc964989635570fed /Documentation/networking/nf_conntrack-sysctl.rst | |
| parent | b0a7ab4a776583b4344e8313638dc795f7589209 (diff) | |
netfilter: conntrack: add nf_conntrack_events autodetect mode
This adds the new nf_conntrack_events=2 mode and makes it the
default.
This leverages the earlier flag in struct net to allow to avoid
the event extension as long as no event listener is active in
the namespace.
This avoids, for most cases, allocation of ct->ext area.
A followup patch will take further advantage of this by avoiding
calls down into the event framework if the extension isn't present.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'Documentation/networking/nf_conntrack-sysctl.rst')
| -rw-r--r-- | Documentation/networking/nf_conntrack-sysctl.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/networking/nf_conntrack-sysctl.rst b/Documentation/networking/nf_conntrack-sysctl.rst index 311128abb768..834945ebc4cd 100644 --- a/Documentation/networking/nf_conntrack-sysctl.rst +++ b/Documentation/networking/nf_conntrack-sysctl.rst @@ -34,10 +34,13 @@ nf_conntrack_count - INTEGER (read-only) nf_conntrack_events - BOOLEAN - 0 - disabled - - not 0 - enabled (default) + - 1 - enabled + - 2 - auto (default) If this option is enabled, the connection tracking code will provide userspace with connection tracking events via ctnetlink. + The default allocates the extension if a userspace program is + listening to ctnetlink events. nf_conntrack_expect_max - INTEGER Maximum size of expectation table. Default value is |