From 9ba75048c0099ed90b9a64cb7bb57bf12be93528 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 7 Nov 2011 15:55:39 +0100 Subject: udhcpc6: new applet. Not yet functional. It builds. It sends Solicit packets. Not sure these packets are well-formed. I have no server to test it against. function old new delta udhcpc6_main - 2426 +2426 d6_send_raw_packet - 428 +428 d6_send_kernel_packet - 274 +274 d6_recv_raw_packet - 248 +248 send_d6_discover - 177 +177 packed_usage 28795 28966 +171 d6_run_script - 156 +156 send_d6_renew - 140 +140 send_d6_release - 126 +126 d6_recv_kernel_packet - 116 +116 send_d6_select - 95 +95 perform_d6_release - 78 +78 d6_find_option - 74 +74 init_d6_packet - 54 +54 d6_copy_option - 48 +48 d6_mcast_from_client_config_ifindex - 42 +42 d6_dump_packet - 24 +24 static.FF02__1_2 - 16 +16 d6_store_blob - 13 +13 applet_names 2432 2440 +8 applet_main 1412 1416 +4 applet_nameofs 706 708 +2 add_d6_client_options - 1 +1 ------------------------------------------------------------------------------ (add/remove: 21/0 grow/shrink: 4/0 up/down: 4721/0) Total: 4721 bytes text data bss dec hex filename 879080 493 7584 887157 d8975 busybox_old 884585 497 7584 892666 d9efa busybox_unstripped Signed-off-by: Denys Vlasenko --- networking/udhcp/d6_common.h | 118 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 networking/udhcp/d6_common.h (limited to 'networking/udhcp/d6_common.h') diff --git a/networking/udhcp/d6_common.h b/networking/udhcp/d6_common.h new file mode 100644 index 000000000..88afaf8af --- /dev/null +++ b/networking/udhcp/d6_common.h @@ -0,0 +1,118 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2011 Denys Vlasenko. + * + * Licensed under GPLv2, see file LICENSE in this source tree. + */ +#ifndef UDHCP_D6_COMMON_H +#define UDHCP_D6_COMMON_H 1 + +#include + +PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN + + +/*** DHCPv6 packet ***/ + +/* DHCPv6 protocol. See RFC 3315 */ +#define D6_MSG_SOLICIT 1 +#define D6_MSG_ADVERTISE 2 +#define D6_MSG_REQUEST 3 +#define D6_MSG_CONFIRM 4 +#define D6_MSG_RENEW 5 +#define D6_MSG_REBIND 6 +#define D6_MSG_REPLY 7 +#define D6_MSG_RELEASE 8 +#define D6_MSG_DECLINE 9 +#define D6_MSG_RECONFIGURE 10 +#define D6_MSG_INFORMATION_REQUEST 11 +#define D6_MSG_RELAY_FORW 12 +#define D6_MSG_RELAY_REPL 13 + +struct d6_packet { + union { + uint8_t d6_msg_type; + uint32_t d6_xid32; + } d6_u; + uint8_t d6_options[576 - sizeof(struct iphdr) - sizeof(struct udphdr) - 4 + + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS]; +} PACKED; +#define d6_msg_type d6_u.d6_msg_type +#define d6_xid32 d6_u.d6_xid32 + +struct ip6_udp_d6_packet { + struct ip6_hdr ip6; + struct udphdr udp; + struct d6_packet data; +} PACKED; + +struct udp_d6_packet { + struct udphdr udp; + struct d6_packet data; +} PACKED; + +/*** Options ***/ + +struct d6_option { + uint8_t code; + uint8_t code_hi; + uint8_t len; + uint8_t len_hi; + uint8_t data[1]; +} PACKED; + +#define D6_OPT_CLIENTID 1 +#define D6_OPT_SERVERID 2 +#define D6_OPT_IA_NA 3 +#define D6_OPT_IA_TA 4 +#define D6_OPT_IAADDR 5 +#define D6_OPT_ORO 6 +#define D6_OPT_PREFERENCE 7 +#define D6_OPT_ELAPSED_TIME 8 +#define D6_OPT_RELAY_MSG 9 +#define D6_OPT_AUTH 11 +#define D6_OPT_UNICAST 12 +#define D6_OPT_STATUS_CODE 13 +#define D6_OPT_RAPID_COMMIT 14 +#define D6_OPT_USER_CLASS 15 +#define D6_OPT_VENDOR_CLASS 16 +#define D6_OPT_VENDOR_OPTS 17 +#define D6_OPT_INTERFACE_ID 18 +#define D6_OPT_RECONF_MSG 19 +#define D6_OPT_RECONF_ACCEPT 20 + +/*** Other shared functions ***/ + +struct client6_data_t { + struct d6_option *server_id; + struct d6_option *ia_na; +}; + +#define client6_data (*(struct client6_data_t*)(&bb_common_bufsiz1[COMMON_BUFSIZE - sizeof(struct client6_data_t)])) + +int FAST_FUNC d6_listen_socket(int port, const char *inf); + +int FAST_FUNC d6_recv_kernel_packet( + struct in6_addr *peer_ipv6, + struct d6_packet *packet, int fd +); + +int FAST_FUNC d6_send_raw_packet( + struct d6_packet *d6_pkt, unsigned d6_pkt_size, + struct in6_addr *src_ipv6, int source_port, + struct in6_addr *dst_ipv6, int dest_port, const uint8_t *dest_arp, + int ifindex +); + +int FAST_FUNC d6_send_kernel_packet( + struct d6_packet *d6_pkt, unsigned d6_pkt_size, + struct in6_addr *src_ipv6, int source_port, + struct in6_addr *dst_ipv6, int dest_port +); + +void FAST_FUNC d6_dump_packet(struct d6_packet *packet); + + +POP_SAVED_FUNCTION_VISIBILITY + +#endif -- cgit v1.2.3