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gerrit.nordix.org / codeaurora / busybox / 1e9ac9f6853abb645c8d4a480d4ad6f09d7a8588 / . / networking / udhcp / Config.in
blob: 5f76dd8d449c69048f0a407829cad5a1754a3167 [file] [log] [blame]
Mike Frysinger7031f622006-05-08 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 Vlasenko7d219aa2006-10-05 10:17:08 +0000[diff] [blame]6config APP_UDHCPD
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]7 bool "udhcp server (udhcpd)"
Mike Frysinger7031f622006-05-08 03:20:50 +0000[diff] [blame]8 default n
9 help
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]10 udhcpd is a DHCP server geared primarily toward embedded systems,
Mike Frysinger7031f622006-05-08 03:20:50 +0000[diff] [blame]11 while striving to be fully functional and RFC compliant.
12
Denis Vlasenko736230e2006-11-20 19:40:36 +0000[diff] [blame]13config 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 Vlasenko7d219aa2006-10-05 10:17:08 +0000[diff] [blame]22config APP_DUMPLEASES
Mike Frysinger91a33902006-07-24 07:35:52 +0000[diff] [blame]23 bool "Lease display utility (dumpleases)"
24 default n
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000[diff] [blame]25 depends on APP_UDHCPD
Mike Frysinger91a33902006-07-24 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 Vlasenkoc82b5102007-07-01 17:05:57 +0000[diff] [blame]31config 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 Vlasenkoa4a93fd2008-04-21 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 Vlasenkoc82b5102007-07-01 17:05:57 +0000[diff] [blame]39 rewriting remains undisturbed
40
Denis Vlasenko84da0bf2008-02-20 22:29:52 +0000[diff] [blame]41config 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 Vlasenkoa4a93fd2008-04-21 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 Vlasenko84da0bf2008-02-20 22:29:52 +0000[diff] [blame]48
Denis Vlasenko7d219aa2006-10-05 10:17:08 +0000[diff] [blame]49config APP_UDHCPC
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]50 bool "udhcp client (udhcpc)"
Mike Frysinger7031f622006-05-08 03:20:50 +0000[diff] [blame]51 default n
52 help
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]53 udhcpc is a DHCP client geared primarily toward embedded systems,
Mike Frysinger7031f622006-05-08 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 Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]57 runs a script when a lease is obtained or lost.
Mike Frysinger7031f622006-05-08 03:20:50 +0000[diff] [blame]58
Denis Vlasenko223bc972007-11-22 00:58:49 +0000[diff] [blame]59config FEATURE_UDHCPC_ARPING
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]60 bool "Verify that the offered address is free, using ARP ping"
Denis Vlasenko223bc972007-11-22 00:58:49 +0000[diff] [blame]61 default y
62 depends on APP_UDHCPC
63 help
Denis Vlasenkoa4a93fd2008-04-21 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 Vlasenko223bc972007-11-22 00:58:49 +0000[diff] [blame]68
Denis Vlasenkod55fe3e2008-02-04 13:12:16 +0000[diff] [blame]69config 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 Vlasenko223bc972007-11-22 00:58:49 +0000[diff] [blame]76
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000[diff] [blame]77config UDHCP_DEBUG
Denys Vlasenko7a76eba2009-06-19 13:51:29 +0200[diff] [blame]78 int "Maximum verbosity level for udhcp applets (0..9)"
Denys Vlasenkoac906fa2009-06-17 11:54:52 +0200[diff] [blame]79 default 0
Denys Vlasenko7a76eba2009-06-19 13:51:29 +0200[diff] [blame]80 range 0 9
Denys Vlasenkoac906fa2009-06-17 11:54:52 +0200[diff] [blame]81 depends on APP_UDHCPD || APP_UDHCPC || APP_DHCPRELAY
Mike Frysinger7031f622006-05-08 03:20:50 +0000[diff] [blame]82 help
Denys Vlasenkoac906fa2009-06-17 11:54:52 +0200[diff] [blame]83 Verbosity can be increased with multiple -v options.
84 This options controls how high it can be cranked up.
85
86 Bigger values result in bigger code. Levels above 1
87 are very verbose and useful for debugging only.
Denis Vlasenko50664732007-02-27 21:15:08 +0000[diff] [blame]88
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000[diff] [blame]89config FEATURE_UDHCP_RFC3397
Denis Vlasenko50664732007-02-27 21:15:08 +0000[diff] [blame]90 bool "Support for RFC3397 domain search (experimental)"
91 default n
92 depends on APP_UDHCPD || APP_UDHCPC
93 help
94 If selected, both client and server will support passing of domain
95 search lists via option 119, specified in RFC3397.
Denis Vlasenko72e76042007-11-25 03:15:24 +0000[diff] [blame]96
Denis Vlasenko35a064b2008-11-06 00:49:59 +0000[diff] [blame]97config UDHCPC_DEFAULT_SCRIPT
Denis Vlasenko84da0bf2008-02-20 22:29:52 +0000[diff] [blame]98 string "Absolute path to config script"
99 default "/usr/share/udhcpc/default.script"
100 depends on APP_UDHCPC
101 help
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]102 This script is called after udhcpc receives an answer. See
103 examples/udhcp for a working example. Normally it is safe
Denis Vlasenko84da0bf2008-02-20 22:29:52 +0000[diff] [blame]104 to leave this untouched.
105
Denis Vlasenko72e76042007-11-25 03:15:24 +0000[diff] [blame]106config UDHCPC_SLACK_FOR_BUGGY_SERVERS
107 int "DHCP options slack buffer size"
108 default 80
109 range 0 924
110 depends on APP_UDHCPD || APP_UDHCPC
111 help
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]112 Some buggy DHCP servers send DHCP offer packets with option
Denis Vlasenko72e76042007-11-25 03:15:24 +0000[diff] [blame]113 field larger than we expect (which might also be considered a
114 buffer overflow attempt). These packets are normally discarded.
115 If circumstances beyond your control force you to support such
116 servers, this may help. The upper limit (924) makes dhcpc accept
117 even 1500 byte packets (maximum-sized ethernet packets).
118
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]119 This option does not make dhcp[cd] emit non-standard
Denis Vlasenko72e76042007-11-25 03:15:24 +0000[diff] [blame]120 sized packets.
121
122 Known buggy DHCP servers:
123 3Com OfficeConnect Remote 812 ADSL Router:
124 seems to confuse maximum allowed UDP packet size with
125 maximum size of entire IP packet, and sends packets which are
126 28 bytes too large.
Denis Vlasenkoa4a93fd2008-04-21 20:27:29 +0000[diff] [blame]127 Seednet (ISP) VDSL: sends packets 2 bytes too large.