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[NETFILTER]: Add new iptables "connbytes" match

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This patch ads a new "connbytes" match that utilizes the CONFIG_NF_CT_ACCT
per-connection byte and packet counters.  Using it you can do things like
packet classification on average packet size within a 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 2005-08-13 13:56:26 -07:00 • committed by David S. Miller
commit 9d810fd2d2
4 changed files with 202 additions and 1 deletions
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25
include/linux/netfilter_ipv4/ipt_connbytes.h Normal file
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#ifndef _IPT_CONNBYTES_H
#define _IPT_CONNBYTES_H
enum ipt_connbytes_what {
IPT_CONNBYTES_WHAT_PKTS,
IPT_CONNBYTES_WHAT_BYTES,
IPT_CONNBYTES_WHAT_AVGPKT,
};
enum ipt_connbytes_direction {
IPT_CONNBYTES_DIR_ORIGINAL,
IPT_CONNBYTES_DIR_REPLY,
IPT_CONNBYTES_DIR_BOTH,
};
struct ipt_connbytes_info
{
struct {
aligned_u64 from; /* count to be matched */
aligned_u64 to; /* count to be matched */
} count;
u_int8_t what; /* ipt_connbytes_what */
u_int8_t direction; /* ipt_connbytes_direction */
};
#endif