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/* Copyright (c) 2017-2018, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef ODP_IPSEC_CACHE_H_
#define ODP_IPSEC_CACHE_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp.h>
#include <odp/helper/ipsec.h>
#include <odp_ipsec_offload_misc.h>
#include <odp_ipsec_offload_sa_db.h>
/**
* IPsec cache data base entry
*/
typedef struct ipsec_cache_entry_s {
struct ipsec_cache_entry_s *next; /**< Next entry on list */
uint32_t src_ip; /**< Source v4 address */
uint32_t dst_ip; /**< Destination v4 address */
odp_ipsec_sa_t sa; /**< IPSec sa handle */
} ipsec_cache_entry_t;
/**
* IPsec cache data base global structure
*/
typedef struct ipsec_cache_s {
uint32_t index; /**< Index of next available entry */
ipsec_cache_entry_t *in_list; /**< List of active input entries */
ipsec_cache_entry_t *out_list; /**< List of active output entries */
ipsec_cache_entry_t array[MAX_DB]; /**< Entry storage */
} ipsec_cache_t;
/** Global pointer to ipsec_cache db */
extern ipsec_cache_t *ipsec_cache;
/** Initialize IPsec cache */
void init_ipsec_cache(void);
/**
* Create an entry in the IPsec cache
*
* @param cipher_sa Cipher SA DB entry pointer
* @param auth_sa Auth SA DB entry pointer
* @param tun Tunnel DB entry pointer
* @param in Direction (input versus output)
* @param completionq Completion queue
*
* @return 0 if successful else -1
*/
int create_ipsec_cache_entry(sa_db_entry_t *cipher_sa,
sa_db_entry_t *auth_sa,
tun_db_entry_t *tun,
odp_bool_t in,
odp_queue_t completionq);
/**
* Find a matching IPsec cache entry for output packet
*
* @param src_ip Source IPv4 address
* @param dst_ip Destination IPv4 address
*
* @return pointer to IPsec cache entry else NULL
*/
ipsec_cache_entry_t *find_ipsec_cache_entry_out(uint32_t src_ip,
uint32_t dst_ip);
#ifdef __cplusplus
}
#endif
#endif
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