Systemd/src/libsystemd-network/lldp-neighbor.h
Lennart Poettering 0c69794138 tree-wide: remove Lennart's copyright lines
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
2018-06-14 10:20:20 +02:00

91 lines
2.5 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <inttypes.h>
#include <stdbool.h>
#include <sys/types.h>
#include "sd-lldp.h"
#include "hash-funcs.h"
#include "lldp-internal.h"
#include "time-util.h"
typedef struct LLDPNeighborID {
/* The spec calls this an "MSAP identifier" */
void *chassis_id;
size_t chassis_id_size;
void *port_id;
size_t port_id_size;
} LLDPNeighborID;
struct sd_lldp_neighbor {
/* Neighbor objects stay around as long as they are linked into an "sd_lldp" object or n_ref > 0. */
sd_lldp *lldp;
unsigned n_ref;
triple_timestamp timestamp;
usec_t until;
unsigned prioq_idx;
struct ether_addr source_address;
struct ether_addr destination_address;
LLDPNeighborID id;
/* The raw packet size. The data is appended to the object, accessible via LLDP_NEIGHBOR_RAW() */
size_t raw_size;
/* The current read index for the iterative TLV interface */
size_t rindex;
/* And a couple of fields parsed out. */
bool has_ttl:1;
bool has_capabilities:1;
bool has_port_vlan_id:1;
uint16_t ttl;
uint16_t system_capabilities;
uint16_t enabled_capabilities;
char *port_description;
char *system_name;
char *system_description;
uint16_t port_vlan_id;
char *chassis_id_as_string;
char *port_id_as_string;
};
static inline void *LLDP_NEIGHBOR_RAW(const sd_lldp_neighbor *n) {
return (uint8_t*) n + ALIGN(sizeof(sd_lldp_neighbor));
}
static inline uint8_t LLDP_NEIGHBOR_TLV_TYPE(const sd_lldp_neighbor *n) {
return ((uint8_t*) LLDP_NEIGHBOR_RAW(n))[n->rindex] >> 1;
}
static inline size_t LLDP_NEIGHBOR_TLV_LENGTH(const sd_lldp_neighbor *n) {
uint8_t *p;
p = (uint8_t*) LLDP_NEIGHBOR_RAW(n) + n->rindex;
return p[1] + (((size_t) (p[0] & 1)) << 8);
}
static inline void* LLDP_NEIGHBOR_TLV_DATA(const sd_lldp_neighbor *n) {
return ((uint8_t*) LLDP_NEIGHBOR_RAW(n)) + n->rindex + 2;
}
extern const struct hash_ops lldp_neighbor_id_hash_ops;
int lldp_neighbor_prioq_compare_func(const void *a, const void *b);
sd_lldp_neighbor *lldp_neighbor_unlink(sd_lldp_neighbor *n);
sd_lldp_neighbor *lldp_neighbor_new(size_t raw_size);
int lldp_neighbor_parse(sd_lldp_neighbor *n);
void lldp_neighbor_start_ttl(sd_lldp_neighbor *n);
bool lldp_neighbor_equal(const sd_lldp_neighbor *a, const sd_lldp_neighbor *b);