diff options
Diffstat (limited to 'kernel/linux/include/linux/netfilter_bridge/ebt_among.h')
-rw-r--r-- | kernel/linux/include/linux/netfilter_bridge/ebt_among.h | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/kernel/linux/include/linux/netfilter_bridge/ebt_among.h b/kernel/linux/include/linux/netfilter_bridge/ebt_among.h index f98f5fb..e02581a 100644 --- a/kernel/linux/include/linux/netfilter_bridge/ebt_among.h +++ b/kernel/linux/include/linux/netfilter_bridge/ebt_among.h @@ -4,9 +4,11 @@ #define EBT_AMONG_DST 0x01 #define EBT_AMONG_SRC 0x02 -/* Write-once-read-many hash table, used for checking if a given - * MAC address belongs to a set or not. It remembers up to 256 - * addresses. +/* Grzegorz Borowiak <grzes@gnu.univ.gda.pl> 2003 + * + * Write-once-read-many hash table, used for checking if a given + * MAC address belongs to a set or not and possibly for checking + * if it is related with a given IPv4 address. * * The hash value of an address is its last byte. * @@ -53,20 +55,31 @@ struct ebt_mac_wormhash_tuple { int next_ofs; uint32_t cmp[2]; + uint32_t ip; }; struct ebt_mac_wormhash { int table[256]; - struct ebt_mac_wormhash_tuple pool[256]; + int poolsize; + struct ebt_mac_wormhash_tuple pool[0]; }; +#define ebt_mac_wormhash_size(x) ((x) ? sizeof(struct ebt_mac_wormhash) + (x)->poolsize * sizeof(struct ebt_mac_wormhash_tuple) : 0) + struct ebt_among_info { - uint32_t bitmask; - struct ebt_mac_wormhash wh_dst; - struct ebt_mac_wormhash wh_src; + int wh_dst_ofs; + int wh_src_ofs; + int bitmask; }; + +#define EBT_AMONG_DST_NEG 0x1 +#define EBT_AMONG_SRC_NEG 0x2 + +#define ebt_among_wh_dst(x) ((x)->wh_dst_ofs ? (struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_dst_ofs) : NULL) +#define ebt_among_wh_src(x) ((x)->wh_src_ofs ? (struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_src_ofs) : NULL) + #define EBT_AMONG_MATCH "among" #endif |