2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 #include <vlib/vlib.h>
18 #include <vnet/vnet.h>
19 #include <vnet/pg/pg.h>
20 #include <vppinfra/error.h>
22 #include <vnet/ip/ip.h>
24 #include <vppinfra/hash.h>
25 #include <vppinfra/error.h>
26 #include <vppinfra/elog.h>
28 #include "ip6_ioam_seqno.h"
29 #include "ip6_ioam_e2e.h"
31 ioam_seqno_data_main_t ioam_seqno_main;
33 void ioam_seqno_init_bitmap (ioam_seqno_data *data)
35 seqno_bitmap *bitmap = &data->seqno_rx.bitmap;
36 bitmap->window_size = SEQNO_WINDOW_SIZE;
37 bitmap->array_size = SEQNO_WINDOW_ARRAY_SIZE;
38 bitmap->mask = 32 * SEQNO_WINDOW_ARRAY_SIZE - 1;
39 bitmap->array[0] = 0x00000000;/* pretend we haven seen sequence numbers 0*/
47 * This Routine gets called from IPv6 hop-by-hop option handling.
48 * Only if we are encap node, then add PPC data.
49 * On a Transit(MID) node we dont do anything with E2E headers.
50 * On decap node decap is handled by seperate function.
53 ioam_seqno_encap_handler (vlib_buffer_t *b, ip6_header_t *ip,
54 ip6_hop_by_hop_option_t *opt)
56 u32 opaque_index = vnet_buffer(b)->l2_classify.opaque_index;
57 ioam_e2e_option_t * e2e;
59 ioam_seqno_data *data;
61 data = ioam_e2ec_get_seqno_data_from_flow_ctx(opaque_index);
62 e2e = (ioam_e2e_option_t *) opt;
63 e2e->e2e_data = clib_host_to_net_u32(++data->seq_num);
69 * This Routine gets called on POP/Decap node.
72 ioam_seqno_decap_handler (vlib_buffer_t *b, ip6_header_t *ip,
73 ip6_hop_by_hop_option_t *opt)
75 u32 opaque_index = vnet_buffer(b)->l2_classify.opaque_index;
76 ioam_e2e_option_t * e2e;
78 ioam_seqno_data *data;
80 data = ioam_e2ec_get_seqno_data_from_flow_ctx(opaque_index);
81 e2e = (ioam_e2e_option_t *) opt;
82 ioam_analyze_seqno(&data->seqno_rx, (u64) clib_net_to_host_u32(e2e->e2e_data));
88 show_ioam_seqno_cmd_fn (u8 *s, ioam_seqno_data *seqno_data, u8 enc)
92 s = format(s, "SeqNo Data:\n");
95 s = format(s, " Current Seq. Number : %llu\n", seqno_data->seq_num);
99 rx = &seqno_data->seqno_rx;
100 s = format(s, " Highest Seq. Number : %llu\n", rx->bitmap.highest);
101 s = format(s, " Packets received : %llu\n", rx->rx_packets);
102 s = format(s, " Lost packets : %llu\n", rx->lost_packets);
103 s = format(s, " Reordered packets : %llu\n", rx->reordered_packets);
104 s = format(s, " Duplicate packets : %llu\n", rx->dup_packets);