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| author |   Patrick McHardy <kaber@trash.net> | 2006-03-20 18:03:59 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2006-03-20 18:03:59 -0800 |
| commit | a24276924875802853b5bdc12c56d29f1c1bbc79 (patch) | |
| tree | 5725689bf434004143ae875bbfee3d3d29ddcdb0 /net/netfilter/nfnetlink.c | |
| parent | [NETFILTER]: x_tables: replace IPv4/IPv6 policy match by address family independant version (diff) | |
| download | linux-dev-a24276924875802853b5bdc12c56d29f1c1bbc79.tar.xz linux-dev-a24276924875802853b5bdc12c56d29f1c1bbc79.zip | |
[NETFILTER]: ctnetlink: avoid unneccessary event message generation
Avoid unneccessary event message generation by checking for netlink
listeners before building a message.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/netfilter/nfnetlink.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index f6063e8f0050..b88e82a1a987 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -191,6 +191,12 @@ nfnetlink_check_attributes(struct nfnetlink_subsystem *subsys, return 0; } +int nfnetlink_has_listeners(unsigned int group) +{ + return netlink_has_listeners(nfnl, group); +} +EXPORT_SYMBOL_GPL(nfnetlink_has_listeners); + int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo) { gfp_t allocation = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL; |