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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _INET_ILB_NAT_H
#define _INET_ILB_NAT_H
#include <sys/vmem.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Maximum number of NAT source address of a rule. */
#define ILB_MAX_NAT_SRC 10
/* NAT source address hash table. */
typedef struct ilb_nat_src_hash_s {
list_t nsh_head;
kmutex_t nsh_lock;
char nsh_pad[64 - sizeof (list_t) - sizeof (kmutex_t)];
} ilb_nat_src_hash_t;
/*
* NAT source entry. Hold the port space for a source addr/back end server
* pair.
*/
typedef struct ilb_nat_src_entry_s {
in6_addr_t nse_src_addr;
in6_addr_t nse_serv_addr;
in_port_t nse_port;
vmem_t *nse_port_arena;
uint32_t nse_refcnt;
kmutex_t *nse_nsh_lock;
list_node_t nse_link;
} ilb_nat_src_entry_t;
/* Struct to hold all NAT source entry of a back end server. */
typedef struct ilb_nat_src_s {
uint16_t cur;
uint16_t num_src;
ilb_nat_src_entry_t *src_list[ILB_MAX_NAT_SRC];
} ilb_nat_src_t;
extern int ilb_create_nat_src(ilb_stack_t *ilbs, ilb_nat_src_t **,
const in6_addr_t *, in_port_t, const in6_addr_t *, int);
extern void ilb_destroy_nat_src(ilb_nat_src_t **);
extern void ilb_nat_src_timer(void *);
extern void ilb_nat_src_init(ilb_stack_t *);
extern void ilb_nat_src_fini(ilb_stack_t *);
extern ilb_nat_src_entry_t *ilb_alloc_nat_addr(ilb_nat_src_t *, in6_addr_t *,
in_port_t *, uint16_t *);
extern void ilb_full_nat(int, void *, int, void *, ilb_nat_info_t *, uint32_t,
uint32_t, boolean_t);
extern void ilb_half_nat(int, void *, int, void *, ilb_nat_info_t *, uint32_t,
uint32_t, boolean_t);
extern void ilb_nat_icmpv4(mblk_t *, ipha_t *, icmph_t *, ipha_t *,
in_port_t *, in_port_t *, ilb_nat_info_t *, uint32_t, boolean_t);
extern void ilb_nat_icmpv6(mblk_t *, ip6_t *, icmp6_t *, ip6_t *,
in_port_t *, in_port_t *, ilb_nat_info_t *, boolean_t);
extern uint32_t ilb_pseudo_sum_v6(ip6_t *, uint8_t);
#ifdef __cplusplus
}
#endif
#endif /* _INET_ILB_NAT_H */
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