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/*-
* Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: projects/ipfw/sys/netpfil/ipfw/ip_fw_private.h 267467 2014-06-14 10:58:39Z melifaro $
*/
#ifndef _IPFW2_TABLE_H
#define _IPFW2_TABLE_H
/*
* Internal constants and data structures used by ipfw tables
* and not meant to be exported outside the kernel.
*/
#ifdef _KERNEL
struct table_info {
table_lookup_t *lookup; /* Lookup function */
void *state; /* Lookup radix/other structure */
void *xstate; /* eXtended state */
u_long data; /* Hints for given func */
};
/* Internal structures for handling sockopt data */
struct tid_info {
uint32_t set; /* table set */
uint16_t uidx; /* table index */
uint8_t type; /* table type */
uint8_t atype;
void *tlvs; /* Pointer to first TLV */
int tlen; /* Total TLV size block */
};
struct tentry_info {
void *paddr;
uint8_t masklen; /* mask length */
uint8_t subtype;
uint16_t flags; /* record flags */
uint32_t value; /* value */
};
#define TEI_FLAGS_UPDATE 0x01 /* Update record if exists */
#define TEI_FLAGS_UPDATED 0x02 /* Entry has been updated */
typedef int (ta_init)(void **ta_state, struct table_info *ti, char *data);
typedef void (ta_destroy)(void *ta_state, struct table_info *ti);
typedef int (ta_prepare_add)(struct tentry_info *tei, void *ta_buf);
typedef int (ta_prepare_del)(struct tentry_info *tei, void *ta_buf);
typedef int (ta_add)(void *ta_state, struct table_info *ti,
struct tentry_info *tei, void *ta_buf);
typedef int (ta_del)(void *ta_state, struct table_info *ti,
struct tentry_info *tei, void *ta_buf);
typedef void (ta_flush_entry)(struct tentry_info *tei, void *ta_buf);
typedef void (ta_print_config)(void *ta_state, struct table_info *ti, char *buf,
size_t bufsize);
typedef int ta_foreach_f(void *node, void *arg);
typedef void ta_foreach(void *ta_state, struct table_info *ti, ta_foreach_f *f,
void *arg);
typedef int ta_dump_tentry(void *ta_state, struct table_info *ti, void *e,
ipfw_obj_tentry *tent);
typedef int ta_find_tentry(void *ta_state, struct table_info *ti, void *key,
uint32_t keylen, ipfw_obj_tentry *tent);
struct table_algo {
char name[16];
int idx;
ta_init *init;
ta_destroy *destroy;
table_lookup_t *lookup;
ta_prepare_add *prepare_add;
ta_prepare_del *prepare_del;
ta_add *add;
ta_del *del;
ta_flush_entry *flush_entry;
ta_foreach *foreach;
ta_dump_tentry *dump_tentry;
ta_print_config *print_config;
ta_find_tentry *find_tentry;
};
void ipfw_add_table_algo(struct ip_fw_chain *ch, struct table_algo *ta);
extern struct table_algo radix_cidr, radix_iface;
void ipfw_table_algo_init(struct ip_fw_chain *chain);
void ipfw_table_algo_destroy(struct ip_fw_chain *chain);
/* direct ipfw_ctl handlers */
int ipfw_listsize_tables(struct ip_fw_chain *ch, struct sockopt_data *sd);
int ipfw_list_tables(struct ip_fw_chain *ch, struct sockopt_data *sd);
int ipfw_dump_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3,
struct sockopt_data *sd);
int ipfw_describe_table(struct ip_fw_chain *ch, struct sockopt_data *sd);
int ipfw_find_table_entry(struct ip_fw_chain *ch, ip_fw3_opheader *op3,
struct sockopt_data *sd);
int ipfw_create_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3,
struct sockopt_data *sd);
int ipfw_modify_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3,
struct sockopt_data *sd);
int ipfw_flush_table(struct ip_fw_chain *ch, ip_fw3_opheader *op3,
struct sockopt_data *sd);
/* Exported to support legacy opcodes */
int add_table_entry(struct ip_fw_chain *ch, struct tid_info *ti,
struct tentry_info *tei);
int del_table_entry(struct ip_fw_chain *ch, struct tid_info *ti,
struct tentry_info *tei);
int flush_table(struct ip_fw_chain *ch, struct tid_info *ti);
int ipfw_rewrite_table_uidx(struct ip_fw_chain *chain,
struct rule_check_info *ci);
int ipfw_rewrite_table_kidx(struct ip_fw_chain *chain,
struct ip_fw_rule0 *rule);
int ipfw_mark_table_kidx(struct ip_fw_chain *chain, struct ip_fw *rule,
uint32_t *bmask);
int ipfw_export_table_ntlv(struct ip_fw_chain *ch, uint16_t kidx,
struct sockopt_data *sd);
void ipfw_unbind_table_rule(struct ip_fw_chain *chain, struct ip_fw *rule);
void ipfw_unbind_table_list(struct ip_fw_chain *chain, struct ip_fw *head);
/* utility functions */
void objheader_to_ti(struct _ipfw_obj_header *oh, struct tid_info *ti);
int ipfw_check_table_name(char *name);
/* Legacy interfaces */
int ipfw_count_table(struct ip_fw_chain *ch, struct tid_info *ti,
uint32_t *cnt);
int ipfw_count_xtable(struct ip_fw_chain *ch, struct tid_info *ti,
uint32_t *cnt);
int ipfw_dump_table_legacy(struct ip_fw_chain *ch, struct tid_info *ti,
ipfw_table *tbl);
#endif /* _KERNEL */
#endif /* _IPFW2_TABLE_H */
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