/* * 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; /* management ipv4 address */ u8 *mgmt_ip4; /* management ipv6 address */ u8 *mgmt_ip6; /* management object identifier */ u8 *mgmt_oid; } 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: */