2e4e6a17af
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef _XT_TCPUDP_H
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#define _XT_TCPUDP_H
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/* TCP matching stuff */
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struct xt_tcp
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{
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u_int16_t spts[2]; /* Source port range. */
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u_int16_t dpts[2]; /* Destination port range. */
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u_int8_t option; /* TCP Option iff non-zero*/
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u_int8_t flg_mask; /* TCP flags mask byte */
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u_int8_t flg_cmp; /* TCP flags compare byte */
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u_int8_t invflags; /* Inverse flags */
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};
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/* Values for "inv" field in struct ipt_tcp. */
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#define XT_TCP_INV_SRCPT 0x01 /* Invert the sense of source ports. */
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#define XT_TCP_INV_DSTPT 0x02 /* Invert the sense of dest ports. */
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#define XT_TCP_INV_FLAGS 0x04 /* Invert the sense of TCP flags. */
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#define XT_TCP_INV_OPTION 0x08 /* Invert the sense of option test. */
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#define XT_TCP_INV_MASK 0x0F /* All possible flags. */
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/* UDP matching stuff */
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struct xt_udp
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{
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u_int16_t spts[2]; /* Source port range. */
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u_int16_t dpts[2]; /* Destination port range. */
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u_int8_t invflags; /* Inverse flags */
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};
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/* Values for "invflags" field in struct ipt_udp. */
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#define XT_UDP_INV_SRCPT 0x01 /* Invert the sense of source ports. */
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#define XT_UDP_INV_DSTPT 0x02 /* Invert the sense of dest ports. */
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#define XT_UDP_INV_MASK 0x03 /* All possible flags. */
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#endif
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