76253e73f9
Like Infiniband. See RFC 4390 section 2.1 for details on DHCP and Infiniband; chaddr is zeroed, hlen is set to 0, and htype is set to ARPHRD_INFINIBAND because IB hardware addresses are 20 bytes in length.
75 lines
3.1 KiB
C
75 lines
3.1 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright (C) 2013 Intel Corporation. All rights reserved.
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Copyright (C) 2014 Tom Gundersen
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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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#include <stdint.h>
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#include <linux/if_packet.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include "socket-util.h"
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#include "sd-dhcp-client.h"
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#include "dhcp-protocol.h"
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int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link,
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uint32_t xid, const uint8_t *mac_addr,
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size_t mac_addr_len, uint16_t arp_type);
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int dhcp_network_bind_udp_socket(be32_t address, uint16_t port);
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int dhcp_network_send_raw_socket(int s, const union sockaddr_union *link,
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const void *packet, size_t len);
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int dhcp_network_send_udp_socket(int s, be32_t address, uint16_t port,
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const void *packet, size_t len);
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int dhcp_option_append(DHCPMessage *message, size_t size, size_t *offset, uint8_t overload,
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uint8_t code, size_t optlen, const void *optval);
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typedef int (*dhcp_option_cb_t)(uint8_t code, uint8_t len,
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const uint8_t *option, void *user_data);
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int dhcp_option_parse(DHCPMessage *message, size_t len,
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dhcp_option_cb_t cb, void *user_data);
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int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid,
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uint8_t type, uint16_t arp_type, size_t optlen,
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size_t *optoffset);
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uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len);
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void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr,
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uint16_t source, be32_t destination_addr,
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uint16_t destination, uint16_t len);
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int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum);
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DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_client*, sd_dhcp_client_unref);
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#define _cleanup_dhcp_client_unref_ _cleanup_(sd_dhcp_client_unrefp)
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/* If we are invoking callbacks of a dhcp-client, ensure unreffing the
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* client from the callback doesn't destroy the object we are working
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* on */
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#define DHCP_CLIENT_DONT_DESTROY(client) \
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_cleanup_dhcp_client_unref_ _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client)
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#define log_dhcp_client(client, fmt, ...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__)
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