ef8711b3b2
Change-Id: I219b270f905dad5939ab38e933712845c314286d Signed-off-by: Dave Barach <dave@barachs.net>
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
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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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*/
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