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/*
* Copyright (c) 2011-2016 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.
*/
/**
* @file
* @brief LLDP global declarations
*/
#ifndef __included_lldp_node_h__
#define __included_lldp_node_h__
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/snap/snap.h>
#include <vppinfra/format.h>
#include <vppinfra/hash.h>
#include <vnet/lldp/lldp_protocol.h>
typedef struct lldp_intf
{
/* hw interface index */
u32 hw_if_index;
/* Timers */
f64 last_heard;
f64 last_sent;
/* Info received from peer */
u8 *chassis_id;
u8 *port_id;
u16 ttl;
lldp_port_id_subtype_t port_id_subtype;
lldp_chassis_id_subtype_t chassis_id_subtype;
/* Local info */
u8 *port_desc;
} lldp_intf_t;
typedef struct
{
/* pool of lldp-enabled interface context data */
lldp_intf_t *intfs;
/* rapidly find an interface by vlib hw interface index */
uword *intf_by_hw_if_index;
/* Background process node index */
u32 lldp_process_node_index;
/* interface idxs (into intfs pool) in the order of timing out */
u32 *intfs_timeouts;
/* index of the interface which will time out next */
u32 intfs_timeouts_idx;
/* packet template for sending out packets */
vlib_packet_template_t packet_template;
/* convenience variables */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
/* system name advertised over LLDP (default is none) */
u8 *sys_name;
/* IEEE Std 802.1AB-2009:
* 9.2.5.6 msgTxHold
* This variable is used, as a multiplier of msgTxInterval, to determine the
* value of txTTL that is carried in LLDP frames transmitted by the LLDP
* agent. The recommended default value of msgTxHold is 4; this value can
* be changed by management to any value in the range 1 through 100.
*/
u8 msg_tx_hold;
/* IEEE Std 802.1AB-2009:
* 9.2.5.7 msgTxInterval
* This variable defines the time interval in timer ticks between
* transmissions during normal transmission periods (i.e., txFast is zero).
* The recommended default value for msgTxInterval is 30 s; this value can
* be changed by management to any value in the range 1 through 3600.
*/
u16 msg_tx_interval;
} lldp_main_t;
#define LLDP_MIN_TX_HOLD (1)
#define LLDP_MAX_TX_HOLD (100)
#define LLDP_MIN_TX_INTERVAL (1)
#define LLDP_MAX_TX_INTERVAL (3600)
extern lldp_main_t lldp_main;
/* Packet counters */
#define foreach_lldp_error(F) \
F(NONE, "good lldp packets (processed)") \
F(CACHE_HIT, "good lldp packets (cache hit)") \
F(BAD_TLV, "lldp packets with bad TLVs") \
F(DISABLED, "lldp packets received on disabled interfaces")
typedef enum
{
#define F(sym, str) LLDP_ERROR_##sym,
foreach_lldp_error (F)
#undef F
LLDP_N_ERROR,
} lldp_error_t;
/* lldp packet trace capture */
typedef struct
{
u32 len;
u8 data[400];
} lldp_input_trace_t;
enum
{
LLDP_EVENT_RESCHEDULE = 1,
} lldp_process_event_t;
lldp_intf_t *lldp_get_intf (lldp_main_t * lm, u32 hw_if_index);
lldp_intf_t *lldp_create_intf (lldp_main_t * lm, u32 hw_if_index);
void lldp_delete_intf (lldp_main_t * lm, lldp_intf_t * n);
lldp_error_t lldp_input (vlib_main_t * vm, vlib_buffer_t * b0, u32 bi0);
u8 *lldp_input_format_trace (u8 * s, va_list * args);
void lldp_send_ethernet (lldp_main_t * lm, lldp_intf_t * n, int shutdown);
void lldp_schedule_intf (lldp_main_t * lm, lldp_intf_t * n);
void lldp_unschedule_intf (lldp_main_t * lm, lldp_intf_t * n);
#endif /* __included_lldp_node_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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