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[NETFILTER]: Use only 32bit counters for CONNTRACK_ACCT

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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>
This commit is contained in:
Harald Welte 2005-10-10 21:21:10 -07:00 • committed by David S. Miller
parent d4875b049b
commit a051a8f730
4 changed files with 22 additions and 13 deletions
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6
include/linux/netfilter/nfnetlink_conntrack.h
View file

@ -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)

8
include/linux/netfilter_ipv4/ip_conntrack.h
View file

@ -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;