Blame - networking/udhcp/Config.in - codeaurora/busybox

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Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	1	#
				2	# For a description of the syntax of this configuration file,
				3	# see scripts/kbuild/config-language.txt.
				4	#
				5
Denis Vlasenko	7d219aa	2006-10-05 10:17:08 +0000	[diff] [blame]	6	config APP_UDHCPD
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	7	bool "udhcp server (udhcpd)"
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	8	default n
				9	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	10	udhcpd is a DHCP server geared primarily toward embedded systems,
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	11	while striving to be fully functional and RFC compliant.
				12
Denis Vlasenko	736230e	2006-11-20 19:40:36 +0000	[diff] [blame]	13	config APP_DHCPRELAY
				14	bool "dhcprelay"
				15	default n
				16	depends on APP_UDHCPD
				17	help
				18	dhcprelay listens for dhcp requests on one or more interfaces
				19	and forwards these requests to a different interface or dhcp
				20	server.
				21
Denis Vlasenko	7d219aa	2006-10-05 10:17:08 +0000	[diff] [blame]	22	config APP_DUMPLEASES
Mike Frysinger	91a3390	2006-07-24 07:35:52 +0000	[diff] [blame]	23	bool "Lease display utility (dumpleases)"
				24	default n
Denis Vlasenko	7d219aa	2006-10-05 10:17:08 +0000	[diff] [blame]	25	depends on APP_UDHCPD
Mike Frysinger	91a3390	2006-07-24 07:35:52 +0000	[diff] [blame]	26	help
				27	dumpleases displays the leases written out by the udhcpd server.
				28	Lease times are stored in the file by time remaining in lease, or
				29	by the absolute time that it expires in seconds from epoch.
				30
Denis Vlasenko	c82b510	2007-07-01 17:05:57 +0000	[diff] [blame]	31	config FEATURE_UDHCPD_WRITE_LEASES_EARLY
				32	bool "Rewrite the lease file at every new acknowledge"
				33	default n
				34	depends on APP_UDHCPD
				35	help
				36	If selected, udhcpd will write a new file with leases every
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	37	time a new lease has been accepted, thus eliminating the need
				38	to send SIGUSR1 for the initial writing or updating. Any timed
Denis Vlasenko	c82b510	2007-07-01 17:05:57 +0000	[diff] [blame]	39	rewriting remains undisturbed
				40
Denis Vlasenko	84da0bf	2008-02-20 22:29:52 +0000	[diff] [blame]	41	config DHCPD_LEASES_FILE
				42	string "Absolute path to lease file"
				43	default "/var/lib/misc/udhcpd.leases"
				44	depends on APP_UDHCPD
				45	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	46	udhcpd stores addresses in a lease file. This is the absolute path
				47	of the file. Normally it is safe to leave it untouched.
Denis Vlasenko	84da0bf	2008-02-20 22:29:52 +0000	[diff] [blame]	48
Denis Vlasenko	7d219aa	2006-10-05 10:17:08 +0000	[diff] [blame]	49	config APP_UDHCPC
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	50	bool "udhcp client (udhcpc)"
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	51	default n
				52	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	53	udhcpc is a DHCP client geared primarily toward embedded systems,
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	54	while striving to be fully functional and RFC compliant.
				55
				56	The udhcp client negotiates a lease with the DHCP server and
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	57	runs a script when a lease is obtained or lost.
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	58
Denis Vlasenko	223bc97	2007-11-22 00:58:49 +0000	[diff] [blame]	59	config FEATURE_UDHCPC_ARPING
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	60	bool "Verify that the offered address is free, using ARP ping"
Denis Vlasenko	223bc97	2007-11-22 00:58:49 +0000	[diff] [blame]	61	default y
				62	depends on APP_UDHCPC
				63	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	64	If selected, udhcpc will send ARP probes and make sure
				65	the offered address is really not in use by anyone. The client
				66	will DHCPDECLINE the offer if the address is in use,
				67	and restart the discover process.
Denis Vlasenko	223bc97	2007-11-22 00:58:49 +0000	[diff] [blame]	68
Denis Vlasenko	d55fe3e	2008-02-04 13:12:16 +0000	[diff] [blame]	69	config FEATURE_UDHCP_PORT
				70	bool "Enable '-P port' option for udhcpd and udhcpc"
				71	default n
				72	depends on APP_UDHCPD \|\| APP_UDHCPC
				73	help
				74	At the cost of ~300 bytes, enables -P port option.
				75	This feature is typically not needed.
Denis Vlasenko	223bc97	2007-11-22 00:58:49 +0000	[diff] [blame]	76
Denis Vlasenko	35a064b	2008-11-06 00:49:59 +0000	[diff] [blame]	77	config UDHCP_DEBUG
Mike Frysinger	91a3390	2006-07-24 07:35:52 +0000	[diff] [blame]	78	bool "Compile udhcp with noisy debugging messages"
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	79	default n
Denis Vlasenko	7d219aa	2006-10-05 10:17:08 +0000	[diff] [blame]	80	depends on APP_UDHCPD \|\| APP_UDHCPC
Mike Frysinger	7031f62	2006-05-08 03:20:50 +0000	[diff] [blame]	81	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	82	If selected, udhcpd will output extra debugging output.
Denis Vlasenko	5066473	2007-02-27 21:15:08 +0000	[diff] [blame]	83
Denis Vlasenko	35a064b	2008-11-06 00:49:59 +0000	[diff] [blame]	84	config FEATURE_UDHCP_RFC3397
Denis Vlasenko	5066473	2007-02-27 21:15:08 +0000	[diff] [blame]	85	bool "Support for RFC3397 domain search (experimental)"
				86	default n
				87	depends on APP_UDHCPD \|\| APP_UDHCPC
				88	help
				89	If selected, both client and server will support passing of domain
				90	search lists via option 119, specified in RFC3397.
Denis Vlasenko	72e7604	2007-11-25 03:15:24 +0000	[diff] [blame]	91
Denis Vlasenko	35a064b	2008-11-06 00:49:59 +0000	[diff] [blame]	92	config UDHCPC_DEFAULT_SCRIPT
Denis Vlasenko	84da0bf	2008-02-20 22:29:52 +0000	[diff] [blame]	93	string "Absolute path to config script"
				94	default "/usr/share/udhcpc/default.script"
				95	depends on APP_UDHCPC
				96	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	97	This script is called after udhcpc receives an answer. See
				98	examples/udhcp for a working example. Normally it is safe
Denis Vlasenko	84da0bf	2008-02-20 22:29:52 +0000	[diff] [blame]	99	to leave this untouched.
				100
Denis Vlasenko	72e7604	2007-11-25 03:15:24 +0000	[diff] [blame]	101	config UDHCPC_SLACK_FOR_BUGGY_SERVERS
				102	int "DHCP options slack buffer size"
				103	default 80
				104	range 0 924
				105	depends on APP_UDHCPD \|\| APP_UDHCPC
				106	help
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	107	Some buggy DHCP servers send DHCP offer packets with option
Denis Vlasenko	72e7604	2007-11-25 03:15:24 +0000	[diff] [blame]	108	field larger than we expect (which might also be considered a
				109	buffer overflow attempt). These packets are normally discarded.
				110	If circumstances beyond your control force you to support such
				111	servers, this may help. The upper limit (924) makes dhcpc accept
				112	even 1500 byte packets (maximum-sized ethernet packets).
				113
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	114	This option does not make dhcp[cd] emit non-standard
Denis Vlasenko	72e7604	2007-11-25 03:15:24 +0000	[diff] [blame]	115	sized packets.
				116
				117	Known buggy DHCP servers:
				118	3Com OfficeConnect Remote 812 ADSL Router:
				119	seems to confuse maximum allowed UDP packet size with
				120	maximum size of entire IP packet, and sends packets which are
				121	28 bytes too large.
Denis Vlasenko	a4a93fd	2008-04-21 20:27:29 +0000	[diff] [blame]	122	Seednet (ISP) VDSL: sends packets 2 bytes too large.