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/* -*- mode: c; c-file-style: "openbsd" -*- */
/*
* Copyright (c) 2015 Nicira, Inc.
* Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LLDPD_STRUCTS_H
#define _LLDPD_STRUCTS_H
#include <net/if.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include "aa-structs.h"
#include "lldp-const.h"
#include "packets.h"
enum {
LLDPD_AF_UNSPEC = 0,
LLDPD_AF_IPV4,
LLDPD_AF_IPV6,
LLDPD_AF_LAST
};
inline static int
lldpd_af(int af)
{
switch (af) {
case LLDPD_AF_IPV4: return AF_INET;
case LLDPD_AF_IPV6: return AF_INET6;
case LLDPD_AF_LAST: return AF_MAX;
default: return AF_UNSPEC;
}
}
#define LLDPD_MGMT_MAXADDRSIZE 16 /* sizeof(struct in6_addr) */
struct lldpd_mgmt {
struct ovs_list m_entries;
int m_family;
union {
struct in_addr inet;
struct in6_addr inet6;
u_int8_t octets[LLDPD_MGMT_MAXADDRSIZE];
} m_addr;
size_t m_addrsize;
u_int32_t m_iface;
};
struct lldpd_chassis {
struct ovs_list list;
u_int16_t c_refcount; /* Reference count by ports */
u_int16_t c_index; /* Monotonic index */
u_int8_t c_protocol; /* Protocol used to get this chassis */
u_int8_t c_id_subtype;
uint8_t *c_id; /* Typically an Ethernet address. */
int c_id_len;
char *c_name;
char *c_descr;
u_int16_t c_cap_available;
u_int16_t c_cap_enabled;
u_int16_t c_ttl;
struct ovs_list c_mgmt; /* Contains "struct lldp_mgmt"s. */
};
/* WARNING: any change to this structure should also be reflected into
`lldpd_copy_chassis()` which is not using marshaling. */
struct lldpd_port {
struct ovs_list p_entries;
struct lldpd_chassis *p_chassis; /* Attached chassis */
time_t p_lastchange; /* Time of last change of values */
time_t p_lastupdate; /* Time of last update received */
struct lldpd_frame *p_lastframe; /* Frame received during last update */
u_int8_t p_protocol; /* Protocol used to get this port */
u_int8_t p_hidden_in:1; /* Considered hidden for reception */
u_int8_t p_hidden_out:1; /* Considered hidden for emission */
/* Important: all fields that should be ignored to check if a port has
* been changed should be before p_id_subtype. Check
* `lldpd_reset_timer()`.
*/
u_int8_t p_id_subtype;
char *p_id;
int p_id_len;
char *p_descr;
u_int16_t p_mfs;
struct lldpd_aa_element_tlv p_element;
struct ovs_list p_isid_vlan_maps; /* Contains "struct lldpd_aa_isid_vlan_maps_tlv"s. */
};
/* Smart mode / Hide mode */
#define SMART_INCOMING_FILTER (1<<0) /* Incoming filtering enabled */
#define SMART_INCOMING_ONE_PROTO (1<<1) /* On reception, keep only 1 proto */
#define SMART_INCOMING_ONE_NEIGH (1<<2) /* On recep., keep only 1 neighbor */
#define SMART_OUTGOING_FILTER (1<<3) /* Outgoing filtering enabled */
#define SMART_OUTGOING_ONE_PROTO (1<<4) /* On emission, keep only one proto */
#define SMART_OUTGOING_ONE_NEIGH (1<<5) /* On emission, consider only
one neighbor */
#define SMART_INCOMING (SMART_INCOMING_FILTER | \
SMART_INCOMING_ONE_PROTO | \
SMART_INCOMING_ONE_NEIGH)
#define SMART_OUTGOING (SMART_OUTGOING_FILTER | \
SMART_OUTGOING_ONE_PROTO | \
SMART_OUTGOING_ONE_NEIGH)
struct lldpd_config {
int c_paused; /* lldpd is paused */
int c_tx_interval; /* Transmit interval */
int c_smart; /* Bitmask for smart configuration (see SMART_*) */
int c_receiveonly; /* Receive only mode */
int c_max_neighbors; /* Maximum number of neighbors (per protocol) */
char *c_mgmt_pattern; /* Pattern to match a management address */
char *c_cid_pattern; /* Pattern to match interfaces to use for chassis
* ID */
char *c_iface_pattern; /* Pattern to match interfaces to use */
char *c_platform; /* Override platform description (for CDP) */
char *c_description; /* Override chassis description */
char *c_hostname; /* Override system name */
int c_advertise_version; /* Should the precise version be advertised? */
int c_set_ifdescr; /* Set interface description */
int c_promisc; /* Interfaces should be in promiscuous mode */
int c_tx_hold; /* Transmit hold */
int c_bond_slave_src_mac_type; /* Src mac type in lldp frames over bond
* slaves */
int c_lldp_portid_type; /* The PortID type */
};
struct lldpd_frame {
int size;
unsigned char frame[];
};
struct lldpd_hardware;
struct lldpd;
struct lldpd_ops {
int (*send)(struct lldpd *,
struct lldpd_hardware *,
char *, size_t); /* Function to send a frame */
int (*recv)(struct lldpd *,
struct lldpd_hardware *,
int, char *, size_t); /* Function to receive a frame */
int (*cleanup)(struct lldpd *, struct lldpd_hardware *); /* Cleanup */
};
/* An interface is uniquely identified by h_ifindex, h_ifname and h_ops. This
* means if an interface becomes enslaved, it will be considered as a new
* interface. The same applies for renaming and we include the index in case of
* renaming to an existing interface.
*/
struct lldpd_hardware {
struct ovs_list h_entries;
struct lldpd *h_cfg; /* Pointer to main configuration */
void *h_recv; /* FD for reception */
int h_sendfd; /* FD for sending, only used by h_ops */
int h_mangle; /* 1 if we have to mangle the MAC address */
struct lldpd_ops *h_ops; /* Hardware-dependent functions */
void *h_data; /* Hardware-dependent data */
void *h_timer; /* Timer for this port */
int h_mtu;
int h_flags; /* Packets will be sent only
* if IFF_RUNNING. Will be
* removed if this is left
* to 0. */
int h_ifindex; /* Interface index, used by SNMP */
char h_ifname[IFNAMSIZ]; /* Should be unique */
struct eth_addr h_lladdr;
u_int64_t h_tx_cnt;
u_int64_t h_rx_cnt;
u_int64_t h_rx_discarded_cnt;
u_int64_t h_rx_unrecognized_cnt;
u_int64_t h_ageout_cnt;
u_int64_t h_insert_cnt;
u_int64_t h_delete_cnt;
u_int64_t h_drop_cnt;
u_int16_t h_lport_cksum; /* Checksum on local port to see if there
* is a change
*/
struct lldpd_port h_lport; /* Port attached to this hardware port */
struct ovs_list h_rports; /* Contains "struct lldp_port"s. */
};
struct lldpd_interface;
struct lldpd_interface_list;
struct lldpd_neighbor_change {
char *ifname;
#define NEIGHBOR_CHANGE_DELETED -1
#define NEIGHBOR_CHANGE_ADDED 1
#define NEIGHBOR_CHANGE_UPDATED 0
int state;
struct lldpd_port *neighbor;
};
/* Cleanup functions */
void lldpd_chassis_mgmt_cleanup(struct lldpd_chassis *);
void lldpd_chassis_cleanup(struct lldpd_chassis *, bool all);
void lldpd_remote_cleanup(struct lldpd_hardware *,
void (*expire)(struct lldpd_hardware *, struct lldpd_port *), bool all);
void lldpd_port_cleanup(struct lldpd_port *, bool all);
void lldpd_config_cleanup(struct lldpd_config *);
#endif
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