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ip6_ioam_analyse.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2017 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
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#define PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
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#include <
ioam/analyse/ioam_analyse.h
>
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#include <
vnet/ip/ip6_hop_by_hop.h
>
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#include <
ioam/encap/ip6_ioam_trace.h
>
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/** @brief IP6-iOAM analyser main structure.
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@note cache aligned.
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*/
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typedef
struct
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{
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/** Array of function pointer to analyse each hop-by-hop option. */
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int (*analyse_hbh_handler[
MAX_IP6_HBH_OPTION
]) (
u32
flow_id,
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ip6_hop_by_hop_option_t
*
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opt,
u16
len);
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/** This contains the aggregated data from the time VPP started analysing. */
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ioam_analyser_data_t
*
aggregated_data
;
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}
ip6_ioam_analyser_main_t
;
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extern
ip6_ioam_analyser_main_t
ioam_analyser_main
;
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extern
vlib_node_registration_t
analyse_node_local
;
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extern
vlib_node_registration_t
analyse_node_remote
;
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void
ip6_ioam_analyse_register_handlers
(
void
);
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void
ip6_ioam_analyse_unregister_handlers
(
void
);
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clib_error_t
*
ip6_ioam_analyse_init
(
vlib_main_t
*
vm
);
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inline
static
ioam_analyser_data_t
*
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ioam_analyse_get_data_from_flow_id
(
u32
flow_id)
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{
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if
(flow_id >=
vec_len
(ioam_analyser_main.
aggregated_data
))
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return
NULL
;
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if
(ioam_analyser_main.
aggregated_data
[flow_id].
is_free
)
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ioam_analyser_main.
aggregated_data
[flow_id].
is_free
= 0;
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return
(ioam_analyser_main.
aggregated_data
+ flow_id);
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}
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always_inline
void
*
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ip6_ioam_find_hbh_option
(
ip6_hop_by_hop_header_t
* hbh0,
u8
option)
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{
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ip6_hop_by_hop_option_t
*opt0, *limit0;
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u8
type0;
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opt0 = (
ip6_hop_by_hop_option_t
*) (hbh0 + 1);
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limit0 =
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(
ip6_hop_by_hop_option_t
*) ((
u8
*) hbh0 + ((hbh0->
length
+ 1) << 3));
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while
(opt0 < limit0)
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{
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type0 = opt0->
type
;
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if
(type0 == option)
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return
((
void
*) opt0);
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if
(0 == type0)
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{
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opt0 = (
ip6_hop_by_hop_option_t
*) ((
u8
*) opt0) + 1;
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continue
;
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}
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opt0 = (
ip6_hop_by_hop_option_t
*)
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(((
u8
*) opt0) + opt0->
length
+ sizeof (
ip6_hop_by_hop_option_t
));
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}
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return
NULL
;
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}
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always_inline
int
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ip6_ioam_analyse_compare_path_delay
(
ip6_hop_by_hop_header_t
* hbh0,
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ip6_hop_by_hop_header_t
* hbh1,
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bool
oneway)
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{
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ioam_trace_option_t *trace0 =
NULL
, *trace1 =
NULL
;
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f64
delay0, delay1;
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trace0 =
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ip6_ioam_find_hbh_option
(hbh0,
HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST
);
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trace1 =
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ip6_ioam_find_hbh_option
(hbh1,
HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST
);
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if
(
PREDICT_FALSE
((trace0 ==
NULL
) && (trace1 ==
NULL
)))
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return
0;
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if
(
PREDICT_FALSE
(trace1 ==
NULL
))
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return
1;
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if
(
PREDICT_FALSE
(trace0 ==
NULL
))
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return
-1;
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delay0 =
ip6_ioam_analyse_calc_delay
(&trace0->trace_hdr,
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trace0->hdr.length - 2, oneway);
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delay1 =
ip6_ioam_analyse_calc_delay
(&trace1->trace_hdr,
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trace1->hdr.length - 2, oneway);
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return
(delay0 - delay1);
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}
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#endif
/* PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
ip6_hop_by_hop_option_t::type
u8 type
Definition:
ip6_hop_by_hop_packet.h:38
ip6_hop_by_hop_option_t::length
u8 length
Definition:
ip6_hop_by_hop_packet.h:40
NULL
#define NULL
Definition:
clib.h:55
ip6_ioam_analyse_compare_path_delay
static int ip6_ioam_analyse_compare_path_delay(ip6_hop_by_hop_header_t *hbh0, ip6_hop_by_hop_header_t *hbh1, bool oneway)
Definition:
ip6_ioam_analyse.h:90
ioam_analyse_get_data_from_flow_id
static ioam_analyser_data_t * ioam_analyse_get_data_from_flow_id(u32 flow_id)
Definition:
ip6_ioam_analyse.h:50
ip6_ioam_analyse_calc_delay
static f64 ip6_ioam_analyse_calc_delay(ioam_trace_hdr_t *trace, u16 trace_len, u8 oneway)
Definition:
ioam_analyse.h:128
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
ioam_analyser_main
ip6_ioam_analyser_main_t ioam_analyser_main
Definition:
node.c:63
ioam_analyser_data_t_::is_free
u8 is_free
Definition:
ioam_analyse.h:99
ip6_ioam_analyser_main_t
IP6-iOAM analyser main structure.
Definition:
ip6_ioam_analyse.h:26
always_inline
#define always_inline
Definition:
clib.h:92
ip6_hop_by_hop_header_t
Definition:
ip6_hop_by_hop_packet.h:18
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition:
clib.h:105
ip6_hop_by_hop.h
vm
vlib_main_t * vm
Definition:
buffer.c:283
ip6_ioam_find_hbh_option
static void * ip6_ioam_find_hbh_option(ip6_hop_by_hop_header_t *hbh0, u8 option)
Definition:
ip6_ioam_analyse.h:62
analyse_node_local
vlib_node_registration_t analyse_node_local
(constructor) VLIB_REGISTER_NODE (analyse_node_local)
Definition:
node.c:479
ip6_hop_by_hop_option_t
Definition:
ip6_hop_by_hop_packet.h:29
ip6_ioam_analyser_main_t::aggregated_data
ioam_analyser_data_t * aggregated_data
This contains the aggregated data from the time VPP started analysing.
Definition:
ip6_ioam_analyse.h:34
u32
unsigned int u32
Definition:
types.h:88
HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST
#define HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST
Definition:
ip6_hop_by_hop_packet.h:44
ioam_analyse.h
clib_error_t
Definition:
clib_error.h:21
u16
unsigned short u16
Definition:
types.h:57
ip6_ioam_analyse_register_handlers
void ip6_ioam_analyse_register_handlers(void)
Definition:
node.c:454
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition:
vec_bootstrap.h:142
f64
double f64
Definition:
types.h:142
u8
unsigned char u8
Definition:
types.h:56
ioam_analyser_data_t_
Analysed iOAM data.
Definition:
ioam_analyse.h:97
vlib_main_t
Definition:
main.h:59
ip6_hop_by_hop_header_t::length
u8 length
Definition:
ip6_hop_by_hop_packet.h:26
ip6_ioam_analyse_init
clib_error_t * ip6_ioam_analyse_init(vlib_main_t *vm)
ip6_ioam_analyse_unregister_handlers
void ip6_ioam_analyse_unregister_handlers(void)
Definition:
node.c:465
analyse_node_remote
vlib_node_registration_t analyse_node_remote
(constructor) VLIB_REGISTER_NODE (analyse_node_remote)
Definition:
node.c:498
MAX_IP6_HBH_OPTION
#define MAX_IP6_HBH_OPTION
Definition:
ip6_hop_by_hop.h:22
ip6_ioam_trace.h
src
plugins
ioam
analyse
ip6
ip6_ioam_analyse.h
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