x_tables.h revision de3d12f48ac1869fc9f9cb442b2d692b027d8a14
1e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#ifndef _X_TABLES_H 2e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define _X_TABLES_H 3e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 4e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_FUNCTION_MAXNAMELEN 30 5e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_TABLE_MAXNAMELEN 32 6e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 7e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_entry_match 8e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 9e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger union { 10e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct { 11e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t match_size; 12e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 13e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Used by userspace */ 14e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger char name[XT_FUNCTION_MAXNAMELEN-1]; 15e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 16e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int8_t revision; 17e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } user; 18e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct { 19e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t match_size; 20e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 21e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Used inside the kernel */ 22e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct xt_match *match; 23e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } kernel; 24e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 25e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Total length */ 26e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t match_size; 27e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } u; 28e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 29e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger unsigned char data[0]; 30e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 31e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 32e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_entry_target 33e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 34e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger union { 35e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct { 36e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t target_size; 37e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 38e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Used by userspace */ 39e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger char name[XT_FUNCTION_MAXNAMELEN-1]; 40e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 41e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int8_t revision; 42e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } user; 43e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct { 44e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t target_size; 45e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 46e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Used inside the kernel */ 47e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct xt_target *target; 48e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } kernel; 49e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 50e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Total length */ 51e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t target_size; 52e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger } u; 53e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 54e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger unsigned char data[0]; 55e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 56e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 57de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger#define XT_TARGET_INIT(__name, __size) \ 58de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger{ \ 59de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger .target.u.user = { \ 60de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger .target_size = XT_ALIGN(__size), \ 61de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger .name = __name, \ 62de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger }, \ 63de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger} 64de3d12f48ac1869fc9f9cb442b2d692b027d8a14Stephen Hemminger 65e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_standard_target 66e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 67e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct xt_entry_target target; 68e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger int verdict; 69e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 70e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 71e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* The argument to IPT_SO_GET_REVISION_*. Returns highest revision 72e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger * kernel supports, if >= revision. */ 73e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_get_revision 74e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 75e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger char name[XT_FUNCTION_MAXNAMELEN-1]; 76e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 77e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int8_t revision; 78e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 79e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 80e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* CONTINUE verdict for targets */ 81e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_CONTINUE 0xFFFFFFFF 82e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 83e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* For standard target */ 84e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_RETURN (-NF_REPEAT - 1) 85e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 86e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* this is a dummy structure to find out the alignment requirement for a struct 87e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger * containing all the fundamental data types that are used in ipt_entry, 88e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger * ip6t_entry and arpt_entry. This sucks, and it is a hack. It will be my 89e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger * personal pleasure to remove it -HW 90e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger */ 91e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct _xt_align 92e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 93e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int8_t u8; 94e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int16_t u16; 95e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int32_t u32; 96e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int64_t u64; 97e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 98e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 99e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_ALIGN(s) (((s) + (__alignof__(struct _xt_align)-1)) \ 100e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger & ~(__alignof__(struct _xt_align)-1)) 101e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 102e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* Standard return verdict, or do jump. */ 103e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_STANDARD_TARGET "" 104e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* Error verdict. */ 105e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_ERROR_TARGET "ERROR" 106e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 107e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define SET_COUNTER(c,b,p) do { (c).bcnt = (b); (c).pcnt = (p); } while(0) 108e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define ADD_COUNTER(c,b,p) do { (c).bcnt += (b); (c).pcnt += (p); } while(0) 109e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 110e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_counters 111e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 112e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger u_int64_t pcnt, bcnt; /* Packet and byte counters */ 113e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 114e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 115e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger/* The argument to IPT_SO_ADD_COUNTERS. */ 116e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemmingerstruct xt_counters_info 117e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger{ 118e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* Which table. */ 119e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger char name[XT_TABLE_MAXNAMELEN]; 120e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 121e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger unsigned int num_counters; 122e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 123e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger /* The counters (actually `number' of these). */ 124e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger struct xt_counters counters[0]; 125e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger}; 126e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 127e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */ 128e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 129e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger 130e309c5fa6adf7c48074a08126721838ad4ea2749Stephen Hemminger#endif /* _X_TABLES_H */ 131