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