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_socket.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 networking/udhcp/d6_socket.c (limited to 'networking/udhcp/d6_socket.c') diff --git a/networking/udhcp/d6_socket.c b/networking/udhcp/d6_socket.c new file mode 100644 index 000000000..56f69f6a1 --- /dev/null +++ b/networking/udhcp/d6_socket.c @@ -0,0 +1,34 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2011 Denys Vlasenko. + * + * Licensed under GPLv2, see file LICENSE in this source tree. + */ +#include "common.h" +#include "d6_common.h" +#include + +int FAST_FUNC d6_listen_socket(int port, const char *inf) +{ + int fd; + struct sockaddr_in6 addr; + + log1("Opening listen socket on *:%d %s", port, inf); + fd = xsocket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP); + + setsockopt_reuseaddr(fd); + if (setsockopt_broadcast(fd) == -1) + bb_perror_msg_and_die("SO_BROADCAST"); + + /* NB: bug 1032 says this doesn't work on ethernet aliases (ethN:M) */ + if (setsockopt_bindtodevice(fd, inf)) + xfunc_die(); /* warning is already printed */ + + memset(&addr, 0, sizeof(addr)); + addr.sin6_family = AF_INET6; + addr.sin6_port = htons(port); + /* addr.sin6_addr is all-zeros */ + xbind(fd, (struct sockaddr *)&addr, sizeof(addr)); + + return fd; +} -- cgit v1.2.3