diff options
| author |   Jan Engelhardt <jengelh@gmx.de> | 2007-07-07 22:20:36 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2007-07-10 22:17:13 -0700 |
| commit | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de (patch) | |
| tree | edf2513fbfd707a089691487c007c142417ad3a1 /include/linux/netfilter/xt_u32.h | |
| parent | [NETFILTER]: nf_nat_sip: only perform RTP DNAT if SIP session was SNATed (diff) | |
| download | linux-dev-1b50b8a371e90a5e110f466e4ac02cf6b5f681de.tar.xz linux-dev-1b50b8a371e90a5e110f466e4ac02cf6b5f681de.zip | |
[NETFILTER]: Add u32 match
Along comes... xt_u32, a revamped ipt_u32 from POM-NG,
Plus:
* 2007-06-02: added ipv6 support
* 2007-06-05: uses kmalloc for the big buffer
* 2007-06-05: added inversion
* 2007-06-20: use skb_copy_bits() and get rid of the big buffer
and lock (suggested by Pablo Neira Ayuso)
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netfilter/xt_u32.h')
| -rw-r--r-- | include/linux/netfilter/xt_u32.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/linux/netfilter/xt_u32.h b/include/linux/netfilter/xt_u32.h new file mode 100644 index 000000000000..9947f56cdbdd --- /dev/null +++ b/include/linux/netfilter/xt_u32.h @@ -0,0 +1,40 @@ +#ifndef _XT_U32_H +#define _XT_U32_H 1 + +enum xt_u32_ops { + XT_U32_AND, + XT_U32_LEFTSH, + XT_U32_RIGHTSH, + XT_U32_AT, +}; + +struct xt_u32_location_element { + u_int32_t number; + u_int8_t nextop; +}; + +struct xt_u32_value_element { + u_int32_t min; + u_int32_t max; +}; + +/* + * Any way to allow for an arbitrary number of elements? + * For now, I settle with a limit of 10 each. + */ +#define XT_U32_MAXSIZE 10 + +struct xt_u32_test { + struct xt_u32_location_element location[XT_U32_MAXSIZE+1]; + struct xt_u32_value_element value[XT_U32_MAXSIZE+1]; + u_int8_t nnums; + u_int8_t nvalues; +}; + +struct xt_u32 { + struct xt_u32_test tests[XT_U32_MAXSIZE+1]; + u_int8_t ntests; + u_int8_t invert; +}; + +#endif /* _XT_U32_H */ |