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128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2011 Denys Vlasenko.
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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#ifndef UDHCP_D6_COMMON_H
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#define UDHCP_D6_COMMON_H 1
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#include <netinet/ip6.h>
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PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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/*** DHCPv6 packet ***/
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/* DHCPv6 protocol. See RFC 3315 */
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#define D6_MSG_SOLICIT 1
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#define D6_MSG_ADVERTISE 2
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#define D6_MSG_REQUEST 3
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#define D6_MSG_CONFIRM 4
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#define D6_MSG_RENEW 5
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#define D6_MSG_REBIND 6
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#define D6_MSG_REPLY 7
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#define D6_MSG_RELEASE 8
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#define D6_MSG_DECLINE 9
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#define D6_MSG_RECONFIGURE 10
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#define D6_MSG_INFORMATION_REQUEST 11
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#define D6_MSG_RELAY_FORW 12
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#define D6_MSG_RELAY_REPL 13
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struct d6_packet {
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union {
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uint8_t d6_msg_type;
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uint32_t d6_xid32;
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} d6_u;
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uint8_t d6_options[576 - sizeof(struct iphdr) - sizeof(struct udphdr) - 4
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+ CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS];
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} PACKED;
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#define d6_msg_type d6_u.d6_msg_type
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#define d6_xid32 d6_u.d6_xid32
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struct ip6_udp_d6_packet {
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struct ip6_hdr ip6;
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struct udphdr udp;
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struct d6_packet data;
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} PACKED;
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struct udp_d6_packet {
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struct udphdr udp;
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struct d6_packet data;
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} PACKED;
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/*** Options ***/
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struct d6_option {
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uint8_t code_hi;
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uint8_t code;
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uint8_t len_hi;
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uint8_t len;
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uint8_t data[1];
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} PACKED;
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#define D6_OPT_CLIENTID 1
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#define D6_OPT_SERVERID 2
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#define D6_OPT_IA_NA 3
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#define D6_OPT_IA_TA 4
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#define D6_OPT_IAADDR 5
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#define D6_OPT_ORO 6
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#define D6_OPT_PREFERENCE 7
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#define D6_OPT_ELAPSED_TIME 8
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#define D6_OPT_RELAY_MSG 9
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#define D6_OPT_AUTH 11
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#define D6_OPT_UNICAST 12
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#define D6_OPT_STATUS_CODE 13
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#define D6_OPT_RAPID_COMMIT 14
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#define D6_OPT_USER_CLASS 15
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#define D6_OPT_VENDOR_CLASS 16
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#define D6_OPT_VENDOR_OPTS 17
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#define D6_OPT_INTERFACE_ID 18
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#define D6_OPT_RECONF_MSG 19
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#define D6_OPT_RECONF_ACCEPT 20
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#define D6_OPT_IA_PD 25
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#define D6_OPT_IAPREFIX 26
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/*** Other shared functions ***/
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struct client6_data_t {
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struct d6_option *server_id;
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struct d6_option *ia_na;
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char **env_ptr;
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unsigned env_idx;
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};
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#define client6_data (*(struct client6_data_t*)(&bb_common_bufsiz1[COMMON_BUFSIZE - sizeof(struct client6_data_t)]))
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int FAST_FUNC d6_listen_socket(int port, const char *inf);
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int FAST_FUNC d6_recv_kernel_packet(
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struct in6_addr *peer_ipv6,
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struct d6_packet *packet, int fd
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);
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int FAST_FUNC d6_send_raw_packet(
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struct d6_packet *d6_pkt, unsigned d6_pkt_size,
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struct in6_addr *src_ipv6, int source_port,
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struct in6_addr *dst_ipv6, int dest_port, const uint8_t *dest_arp,
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int ifindex
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);
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int FAST_FUNC d6_send_kernel_packet(
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struct d6_packet *d6_pkt, unsigned d6_pkt_size,
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struct in6_addr *src_ipv6, int source_port,
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struct in6_addr *dst_ipv6, int dest_port
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);
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#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
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void FAST_FUNC d6_dump_packet(struct d6_packet *packet);
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#else
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# define d6_dump_packet(packet) ((void)0)
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#endif
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POP_SAVED_FUNCTION_VISIBILITY
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#endif
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