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/*
* Copyright (c) 2016 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.
*/
#ifndef __included_ip6_ioam_seqno_h__
#define __included_ip6_ioam_seqno_h__
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip6_hop_by_hop.h>
#define SEQ_CHECK_VALUE 0x80000000 /* for seq number wraparound detection */
#define SEQNO_WINDOW_SIZE 2048
#define SEQNO_WINDOW_ARRAY_SIZE 64
typedef struct seqno_bitmap_ {
u32 window_size;
u32 array_size;
u32 mask;
u32 pad;
u64 highest;
u64 array[SEQNO_WINDOW_ARRAY_SIZE]; /* Will be alloc to array_size */
} seqno_bitmap;
typedef struct seqno_rx_info_ {
u64 rx_packets;
u64 lost_packets;
u64 reordered_packets;
u64 dup_packets;
seqno_bitmap bitmap;
} seqno_rx_info;
/* This structure is 64-byte aligned */
typedef struct ioam_seqno_data_ {
union {
u32 seq_num; /* Useful only for encap node */
seqno_rx_info seqno_rx;
};
} ioam_seqno_data;
typedef struct ioam_seqno_data_main_t_ {
ioam_seqno_data *seqno_data;
} ioam_seqno_data_main_t;
void ioam_seqno_init_bitmap(ioam_seqno_data *data);
int ioam_seqno_encap_handler(vlib_buffer_t *b, ip6_header_t *ip,
ip6_hop_by_hop_option_t *opt);
int
ioam_seqno_decap_handler(vlib_buffer_t *b, ip6_header_t *ip,
ip6_hop_by_hop_option_t *opt);
void ioam_analyze_seqno(seqno_rx_info *ppc_rx, u64 seqno);
u8 *
show_ioam_seqno_cmd_fn(u8 *s, ioam_seqno_data *seqno_data, u8 enc);
#endif
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