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authorHarald Welte <laforge@netfilter.org>2005-10-10 21:21:10 -0700
committerDavid S. Miller <davem@davemloft.net>2005-10-10 21:21:10 -0700
commita051a8f7306476af0a74370ad56e793cb6c43bf7 (patch)
tree3dc8bc67e6c16a28a0161ed7f7fb55008da3d7d5 /include/linux
parentd4875b049b2e6401a6e1fae90b7f09e20a636fcf (diff)
[NETFILTER]: Use only 32bit counters for CONNTRACK_ACCT
Initially we used 64bit counters for conntrack-based accounting, since we had no event mechanism to tell userspace that our counters are about to overflow. With nfnetlink_conntrack, we now have such a event mechanism and thus can save 16bytes per connection. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/netfilter/nfnetlink_conntrack.h6
-rw-r--r--include/linux/netfilter_ipv4/ip_conntrack.h8
2 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/netfilter/nfnetlink_conntrack.h b/include/linux/netfilter/nfnetlink_conntrack.h
index fb551103018..116fcaced90 100644
--- a/include/linux/netfilter/nfnetlink_conntrack.h
+++ b/include/linux/netfilter/nfnetlink_conntrack.h
@@ -84,8 +84,10 @@ enum ctattr_protoinfo_tcp {
enum ctattr_counters {
CTA_COUNTERS_UNSPEC,
- CTA_COUNTERS_PACKETS,
- CTA_COUNTERS_BYTES,
+ CTA_COUNTERS_PACKETS, /* old 64bit counters */
+ CTA_COUNTERS_BYTES, /* old 64bit counters */
+ CTA_COUNTERS32_PACKETS,
+ CTA_COUNTERS32_BYTES,
__CTA_COUNTERS_MAX
};
#define CTA_COUNTERS_MAX (__CTA_COUNTERS_MAX - 1)
diff --git a/include/linux/netfilter_ipv4/ip_conntrack.h b/include/linux/netfilter_ipv4/ip_conntrack.h
index 4ced3873681..d078bb91d9e 100644
--- a/include/linux/netfilter_ipv4/ip_conntrack.h
+++ b/include/linux/netfilter_ipv4/ip_conntrack.h
@@ -117,6 +117,10 @@ enum ip_conntrack_events
/* NAT info */
IPCT_NATINFO_BIT = 10,
IPCT_NATINFO = (1 << IPCT_NATINFO_BIT),
+
+ /* Counter highest bit has been set */
+ IPCT_COUNTER_FILLING_BIT = 11,
+ IPCT_COUNTER_FILLING = (1 << IPCT_COUNTER_FILLING_BIT),
};
enum ip_conntrack_expect_events {
@@ -192,8 +196,8 @@ do { \
struct ip_conntrack_counter
{
- u_int64_t packets;
- u_int64_t bytes;
+ u_int32_t packets;
+ u_int32_t bytes;
};
struct ip_conntrack_helper;