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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2016-2018 Linaro Limited
*/
/** @cond _ODP_HIDE_FROM_DOXYGEN_ */
#ifndef _ODP_L3FWD_DB_H_
#define _ODP_L3FWD_DB_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp_api.h>
#include <odp/helper/odph_api.h>
#define OIF_LEN 32
#define MAX_DB 32
#define MAX_STRING 32
/**
* Max number of flows
*/
#define FWD_MAX_FLOW_COUNT (1 << 22)
/**
* Default hash entries in a bucket
*/
#define FWD_DEF_BUCKET_ENTRIES 4
/**
* IP address range (subnet)
*/
typedef struct ip_addr_range_s {
uint32_t addr; /**< IP address, host endianness */
uint32_t depth; /**< subnet bit width */
} ip_addr_range_t;
/**
* TCP/UDP flow
*/
typedef struct ODP_ALIGNED_CACHE ipv4_tuple5_s {
union {
struct {
int32_t src_ip;
int32_t dst_ip;
int16_t src_port;
int16_t dst_port;
int8_t proto;
int8_t pad1;
int16_t pad2;
};
struct {
int64_t hi64;
int64_t lo64;
};
};
} ipv4_tuple5_t;
/**
* Forwarding data base entry
*/
typedef struct fwd_db_entry_s {
struct fwd_db_entry_s *next; /**< Next entry on list */
char oif[OIF_LEN]; /**< Output interface name */
int oif_id; /**< Output interface idx */
odph_ethaddr_t src_mac; /**< Output source MAC */
odph_ethaddr_t dst_mac; /**< Output destination MAC */
ip_addr_range_t subnet; /**< Subnet for this router */
} fwd_db_entry_t;
/**
* Forwarding data base
*/
typedef struct fwd_db_s {
uint32_t index; /**< Next available entry */
fwd_db_entry_t *list; /**< List of active routes */
fwd_db_entry_t array[MAX_DB]; /**< Entry storage */
} fwd_db_t;
/** Global pointer to fwd db */
extern fwd_db_t *fwd_db;
/**
* Initialize FWD DB
*/
void init_fwd_db(void);
/**
* Initialize forward lookup cache based on hash
*/
void init_fwd_hash_cache(void);
/**
* Create a forwarding database entry
*
* String is of the format "SubNet,Intf,NextHopMAC"
*
* @param input Pointer to string describing route
* @param oif Pointer to out interface name, as a return value
* @param dst_mac Pointer to dest mac for output packet, as a return value
*
* @return 0 if successful else -1
*/
int create_fwd_db_entry(char *input, char **oif, uint8_t **dst_mac);
/**
* Scan FWD DB entries and resolve output queue and source MAC address
*
* @param intf Interface name string
* @param portid Output queue for packet transmit
* @param mac MAC address of this interface
*/
void resolve_fwd_db(char *intf, int portid, uint8_t *mac);
/**
* Display one forwarding database entry
*
* @param entry Pointer to entry to display
*/
void dump_fwd_db_entry(fwd_db_entry_t *entry);
/**
* Display the forwarding database
*/
void dump_fwd_db(void);
/**
* Find a matching forwarding database entry
*
* @param key ipv4 tuple
*
* @return pointer to forwarding DB entry else NULL
*/
fwd_db_entry_t *find_fwd_db_entry(ipv4_tuple5_t *key);
#ifdef __cplusplus
}
#endif
#endif
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