ddb82ec2a2
This is an attempt to clean-up the DHCP lease server type code a bit. We now strictly use the same enum everywhere, and store server info in an array. Moreover, we use the same nomenclature everywhere. This only makes the changes in the sd-dhcp code. The networkd code is untouched so far (but should be fixed up like this too. But it's more complicated since this would then touch actual settings in .network files). Note that this also changes some field names in serialized lease files. But given that these field names have not been part of a released version of systemd yet, such a change should be ok. This is pure renaming/refactoring, shouldn't actually change any behaviour.
70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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Copyright © 2013 Intel Corporation. All rights reserved.
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***/
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#include <linux/if_packet.h>
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#include <net/ethernet.h>
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#include <stdint.h>
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#include "sd-dhcp-client.h"
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#include "dhcp-protocol.h"
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#include "socket-util.h"
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typedef struct sd_dhcp_option {
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unsigned n_ref;
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uint8_t option;
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void *data;
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size_t length;
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} sd_dhcp_option;
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typedef struct DHCPServerData {
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struct in_addr *addr;
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size_t size;
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} DHCPServerData;
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extern const struct hash_ops dhcp_option_hash_ops;
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int dhcp_network_bind_raw_socket(int ifindex, 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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uint16_t port);
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int dhcp_network_bind_udp_socket(int ifindex, be32_t address, uint16_t port, int ip_service_type);
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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_callback_t)(uint8_t code, uint8_t len,
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const void *option, void *userdata);
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int dhcp_option_parse(DHCPMessage *message, size_t len, dhcp_option_callback_t cb, void *userdata, char **error_message);
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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, int ip_service_type);
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int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum, uint16_t port);
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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_(sd_dhcp_client_unrefp) _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client)
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#define log_dhcp_client_errno(client, error, fmt, ...) log_internal(LOG_DEBUG, error, PROJECT_FILE, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__)
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#define log_dhcp_client(client, fmt, ...) log_dhcp_client_errno(client, 0, fmt, ##__VA_ARGS__)
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