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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* cicn_hello.h - ICN hello protocol operation
*/
#ifndef _CICN_HELLO_H_
#define _CICN_HELLO_H_
#if !CICN_VPP_PLUGIN
#error "cicn-internal file included externally"
#endif
#include <vnet/ip/ip.h>
#define CICN_HELLO_EVENT_DATA_RCVD 1
/* hash of the hello protocol name */
#define CICN_HELLO_NAME_TEMPLATE "/local/adj/1234567890123456/12345678"
#define CICN_HELLO_NAME_CMN_COMPS_FLEN 16 // "/local/adj"
#define CICN_HELLO_NAME_FACEID_V_LEN 16
#define CICN_HELLO_NAME_FACEID_FLEN \
(CICN_TLV_HDR_LEN + CICN_HELLO_NAME_FACEID_V_LEN)
#define CICN_HELLO_NAME_SEQ_V_LEN 8
#define CICN_HELLO_NAME_SEQ_FLEN (CICN_TLV_HDR_LEN + CICN_HELLO_NAME_SEQ_V_LEN)
// match pkt name against common-prefix and faceid components
#define CICN_HELLO_NAME_CMN_FLEN \
(CICN_TLV_HDR_LEN + CICN_HELLO_NAME_CMN_COMPS_FLEN)
#define CICN_HELLO_NAME_TOT_FLEN \
(CICN_TLV_HDR_LEN + CICN_HELLO_NAME_CMN_COMPS_FLEN + \
CICN_HELLO_NAME_FACEID_FLEN + CICN_HELLO_NAME_SEQ_FLEN)
/* The name struct of the ICN Hello Interests */
typedef struct
{
char hn_str[CICN_HELLO_NAME_TOT_FLEN];
u32 hn_wf_v_len;
u8 hn_wf[CICN_HELLO_NAME_TOT_FLEN + 10 /* slop */ ];
} cicn_hello_name_t;
typedef struct cicn_hello_fcd_t_
{
u16 fcd_v_len; // 0 if value not valid
u8 fcd_v[CICN_HELLO_NAME_FACEID_V_LEN];
} cicn_hello_fcd_t;
/* ICN Hello Adjacency struct (piggy-backs on face_cache_entry_t) */
typedef struct
{
int ha_swif; // vpp swif, use as dummy RX for originated packets
/* Is this adjacency active? */
int active;
/* Last received seq num */
u64 last_received_seq_num;
/* Last sent seq num */
u64 last_sent_seq_num;
} cicn_hello_adj_t;
/*
* The data structure to pass to the background process through
* signaled event
*/
typedef struct
{
u64 seq_num;
u32 faceid;
} cicn_hello_data;
clib_error_t *cicn_hello_adj_update (i32 faceid, int enable);
u32 cicn_hello_periodic (vlib_main_t * vm, vlib_node_runtime_t * node);
int cicn_hello_plugin_activation_init (vlib_main_t * vm);
clib_error_t *cicn_hello_boot_init (vlib_main_t * vm);
#endif // _CICN_HELLO_H_
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