lldp-tlv.h revision 4afd3348c7506dd1d36305b7bcb9feb8952b9d6b
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2014 Tom Gundersen
Copyright (C) 2014 Susant Sahani
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
#include <net/ethernet.h>
#include "sd-lldp.h"
#include "list.h"
#include "lldp.h"
#include "util.h"
typedef struct sd_lldp_packet tlv_packet;
typedef struct sd_lldp_section tlv_section;
#define LLDP_OUI_LEN 3
struct sd_lldp_section {
uint16_t type;
uint16_t length;
uint8_t *oui;
uint8_t subtype;
uint8_t *read_pos;
uint8_t *data;
LIST_FIELDS(tlv_section, section);
};
#define LLDP_MAC_NEAREST_BRIDGE (uint8_t[]) { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e }
#define LLDP_MAC_NEAREST_NON_TPMR_BRIDGE (uint8_t[]) { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 }
#define LLDP_MAC_NEAREST_CUSTOMER_BRIDGE (uint8_t[]) { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }
int tlv_section_new(tlv_section **ret);
void tlv_section_free(tlv_section *ret);
struct sd_lldp_packet {
unsigned n_ref;
uint16_t type;
uint16_t length;
usec_t ts;
uint8_t *container_pos;
uint8_t pdu[ETHER_MAX_LEN];
void *userdata;
struct ether_addr mac;
tlv_section *container;
LIST_HEAD(tlv_section, sections);
};
int tlv_packet_new(tlv_packet **ret);
int lldp_tlv_packet_open_container(tlv_packet *m, uint16_t type);
int lldp_tlv_packet_close_container(tlv_packet *m);
int tlv_packet_append_bytes(tlv_packet *m, const void *data, size_t data_length);
int tlv_packet_append_u8(tlv_packet *m, uint8_t data);
int tlv_packet_append_u16(tlv_packet *m, uint16_t data);
int tlv_packet_append_u32(tlv_packet *m, uint32_t data);
int tlv_packet_append_string(tlv_packet *m, char *data, uint16_t size);
int lldp_tlv_packet_enter_container(tlv_packet *m, uint16_t type);
int lldp_tlv_packet_enter_container_oui(tlv_packet *m, const uint8_t *oui, uint8_t subtype);
int lldp_tlv_packet_exit_container(tlv_packet *m);
int tlv_packet_read_bytes(tlv_packet *m, uint8_t **data, uint16_t *data_length);
int tlv_packet_read_string(tlv_packet *m, char **data, uint16_t *data_length);
int tlv_packet_read_u8(tlv_packet *m, uint8_t *data);
int tlv_packet_read_u16(tlv_packet *m, uint16_t *data);
int tlv_packet_read_u32(tlv_packet *m, uint32_t *data);
int tlv_packet_parse_pdu(tlv_packet *t, uint16_t size);