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v20.05.1-6-gf53edbc3b
Vector Packet Processing
cdp.h
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/*
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* cdp.h - cdp protocol plug-in
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*
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* Copyright (c) 2011-2018 by 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 __included_cdp_h__
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#define __included_cdp_h__
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#include <
vlib/vlib.h
>
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#include <
vlib/unix/unix.h
>
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#include <
vnet/snap/snap.h
>
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#include <
vnet/hdlc/hdlc.h
>
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#include <
vnet/hdlc/packet.h
>
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#include <
vppinfra/format.h
>
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#include <
vppinfra/hash.h
>
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#include "
cdp_protocol.h
"
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typedef
enum
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{
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CDP_PACKET_TEMPLATE_ETHERNET
,
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CDP_PACKET_TEMPLATE_HDLC
,
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CDP_PACKET_TEMPLATE_SRP
,
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CDP_N_PACKET_TEMPLATES
,
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}
cdp_packet_template_id_t
;
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typedef
struct
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{
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/* neighbor's vlib software interface index */
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u32
sw_if_index
;
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/* Timers */
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f64
last_heard
;
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f64
last_sent
;
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/* Neighbor time-to-live (usually 180s) */
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u8
ttl_in_seconds
;
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/* "no cdp run" or similar */
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u8
disabled
;
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/* tx packet template id for this neighbor */
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u8
packet_template_index
;
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/* Jenkins hash optimization: avoid tlv scan, send short keepalive msg */
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u8
last_packet_signature_valid
;
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uword
last_packet_signature
;
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/* Info we actually keep about each neighbor */
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u8
*
device_name
;
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u8
*
version
;
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u8
*
port_id
;
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u8
*
platform
;
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/* last received packet, for the J-hash optimization */
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u8
*
last_rx_pkt
;
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}
cdp_neighbor_t
;
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#define foreach_neighbor_string_field \
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_(device_name) \
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_(version) \
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_(port_id) \
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_(platform)
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typedef
struct
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{
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/* pool of cdp neighbors */
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cdp_neighbor_t
*
neighbors
;
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/* plugin message id base */
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u16
msg_id_base
;
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/* tx pcap debug enable */
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u8
tx_pcap_debug
;
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/* rapidly find a neighbor by vlib software interface index */
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uword
*
neighbor_by_sw_if_index
;
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/* Background process node index */
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u32
cdp_process_node_index
;
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/* top-level state */
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int
enabled
;
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int
cdp_protocol_registered
;
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/* Packet templates for different encap types */
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vlib_packet_template_t
packet_templates[
CDP_N_PACKET_TEMPLATES
];
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/* convenience variables */
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vlib_main_t
*
vlib_main
;
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vnet_main_t
*
vnet_main
;
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}
cdp_main_t
;
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extern
cdp_main_t
cdp_main
;
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extern
vlib_node_registration_t
cdp_process_node
;
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/* Packet counters */
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#define foreach_cdp_error \
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_ (NONE, "good cdp packets (processed)") \
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_ (CACHE_HIT, "good cdp packets (cache hit)") \
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_ (BAD_TLV, "cdp packets with bad TLVs") \
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_ (PROTOCOL_VERSION, "cdp packets with bad protocol versions") \
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_ (CHECKSUM, "cdp packets with bad checksums") \
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_ (DISABLED, "cdp packets received on disabled interfaces")
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typedef
enum
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{
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#define _(sym,str) CDP_ERROR_##sym,
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foreach_cdp_error
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#undef _
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CDP_N_ERROR
,
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}
cdp_error_t
;
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/* cdp packet trace capture */
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typedef
struct
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{
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u32
len
;
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u8
data
[400];
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}
cdp_input_trace_t
;
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typedef
enum
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{
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CDP_EVENT_ENABLE
,
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CDP_EVENT_DISABLE
,
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}
cdp_process_event_t
;
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cdp_error_t
cdp_input
(
vlib_main_t
*
vm
,
vlib_buffer_t
* b0,
u32
bi0);
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void
cdp_periodic
(
vlib_main_t
*
vm
);
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void
cdp_keepalive
(
cdp_main_t
*
cm
,
cdp_neighbor_t
* n);
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u16
cdp_checksum
(
void
*p,
int
count
);
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u8
*
cdp_input_format_trace
(
u8
* s, va_list * args);
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void
vnet_cdp_create_periodic_process
(
cdp_main_t
* cmp);
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#endif
/* __included_cdp_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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*/
cdp_main_t::msg_id_base
u16 msg_id_base
Definition:
cdp.h:85
count
u8 count
Definition:
dhcp.api:208
cdp_error_t
cdp_error_t
Definition:
cdp.h:120
cdp_protocol.h
cdp_main_t::enabled
int enabled
Definition:
cdp.h:97
cdp_input
cdp_error_t cdp_input(vlib_main_t *vm, vlib_buffer_t *b0, u32 bi0)
Definition:
cdp_input.c:323
CDP_EVENT_DISABLE
Definition:
cdp.h:138
cdp_main
cdp_main_t cdp_main
Definition:
cdp_input.c:17
cdp_neighbor_t::last_sent
f64 last_sent
Definition:
cdp.h:48
cdp_neighbor_t::version
u8 * version
Definition:
cdp.h:65
cdp_main_t::cdp_process_node_index
u32 cdp_process_node_index
Definition:
cdp.h:94
cdp_checksum
u16 cdp_checksum(void *p, int count)
Definition:
cdp_input.c:26
cdp_neighbor_t::packet_template_index
u8 packet_template_index
Definition:
cdp.h:57
u8
unsigned char u8
Definition:
types.h:56
CDP_EVENT_ENABLE
Definition:
cdp.h:137
hash.h
cdp_main_t::neighbor_by_sw_if_index
uword * neighbor_by_sw_if_index
Definition:
cdp.h:91
f64
double f64
Definition:
types.h:142
cdp_periodic
void cdp_periodic(vlib_main_t *vm)
Definition:
cdp_periodic.c:350
vlib_packet_template_t
Definition:
buffer_funcs.h:1391
u32
unsigned int u32
Definition:
types.h:88
cdp_neighbor_t::last_packet_signature_valid
u8 last_packet_signature_valid
Definition:
cdp.h:60
cdp_input_format_trace
u8 * cdp_input_format_trace(u8 *s, va_list *args)
Definition:
cdp_input.c:484
CDP_PACKET_TEMPLATE_ETHERNET
Definition:
cdp.h:35
cdp_main_t::vnet_main
vnet_main_t * vnet_main
Definition:
cdp.h:105
cm
vnet_crypto_main_t * cm
Definition:
quic_crypto.c:53
CDP_N_PACKET_TEMPLATES
Definition:
cdp.h:38
unix.h
u16
unsigned short u16
Definition:
types.h:57
cdp_neighbor_t::last_heard
f64 last_heard
Definition:
cdp.h:47
cdp_main_t::neighbors
cdp_neighbor_t * neighbors
Definition:
cdp.h:82
foreach_cdp_error
#define foreach_cdp_error
Definition:
cdp.h:112
format.h
CDP_N_ERROR
Definition:
cdp.h:125
vm
vlib_main_t * vm
Definition:
in2out_ed.c:1599
cdp_neighbor_t::last_packet_signature
uword last_packet_signature
Definition:
cdp.h:61
cdp_main_t::tx_pcap_debug
u8 tx_pcap_debug
Definition:
cdp.h:88
vnet_cdp_create_periodic_process
void vnet_cdp_create_periodic_process(cdp_main_t *cmp)
Definition:
cdp_node.c:201
cdp_process_event_t
cdp_process_event_t
Definition:
cdp.h:135
packet.h
cdp_neighbor_t::last_rx_pkt
u8 * last_rx_pkt
Definition:
cdp.h:70
cdp_keepalive
void cdp_keepalive(cdp_main_t *cm, cdp_neighbor_t *n)
cdp_neighbor_t::device_name
u8 * device_name
Definition:
cdp.h:64
cdp_neighbor_t::ttl_in_seconds
u8 ttl_in_seconds
Definition:
cdp.h:51
hdlc.h
vlib.h
vnet_main_t
Definition:
vnet.h:51
data
u8 data[128]
Definition:
ipsec_types.api:89
cdp_main_t::vlib_main
vlib_main_t * vlib_main
Definition:
cdp.h:104
cdp_process_node
vlib_node_registration_t cdp_process_node
CDP_PACKET_TEMPLATE_HDLC
Definition:
cdp.h:36
CDP_PACKET_TEMPLATE_SRP
Definition:
cdp.h:37
cdp_packet_template_id_t
cdp_packet_template_id_t
Definition:
cdp.h:33
cdp_neighbor_t::disabled
u8 disabled
Definition:
cdp.h:54
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
cdp_input_trace_t
Definition:
cdp.h:129
cdp_neighbor_t::port_id
u8 * port_id
Definition:
cdp.h:66
vlib_main_t
Definition:
main.h:83
vlib_buffer_t
VLIB buffer representation.
Definition:
buffer.h:102
uword
u64 uword
Definition:
types.h:112
cdp_main_t
Definition:
cdp.h:79
cdp_main_t::cdp_protocol_registered
int cdp_protocol_registered
Definition:
cdp.h:98
cdp_input_trace_t::len
u32 len
Definition:
cdp.h:131
cdp_neighbor_t::platform
u8 * platform
Definition:
cdp.h:67
cdp_neighbor_t
Definition:
cdp.h:41
cdp_neighbor_t::sw_if_index
u32 sw_if_index
Definition:
cdp.h:44
snap.h
src
plugins
cdp
cdp.h
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