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50089fc61c
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433 Commits

Author SHA1 Message Date
Denys Vlasenko
50089fc61c udhcpc: trim help text, rename badly-named variable 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-07 15:44:46 +01:00
Denys Vlasenko
0fd4347ced udhcpc: code shrink 
function                                             old     new   delta
udhcpc_main                                         2646    2649      +3
udhcp_run_script                                     816     802     -14

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-07 00:54:27 +01:00
Denys Vlasenko
3b46fcb95d udhcpc: remove workaround for bugs in Win98 dhcp server ("MSFT 98" vendor string) 
Stats for last three commits:

function                                             old     new   delta
udhcpc_main                                         2635    2646     +11
udhcp_recv_raw_packet                                425     414     -11
udhcp_recv_kernel_packet                             210     134     -76
packed_usage                                       28940   28857     -83
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 11/-170)          Total: -159 bytes
   text    data     bss     dec     hex filename
 879524     493    7584  887601   d8b31 busybox_old
 879340     493    7584  887417   d8a79 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-05 01:26:18 +01:00
Denys Vlasenko
d38ca03946 udhcpc: reuse string constant; remove unneeded memset(0) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-05 01:25:03 +01:00
Denys Vlasenko
2017d48c0d udhcpc: deprecate --hostname NAME 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-11-05 01:24:14 +01:00
Denys Vlasenko
ee320c6d9c getty: reset tty attrs on Ctrl-C and Ctrl-D too 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-23 18:05:58 +02:00
Denys Vlasenko
2af2acf9b5 udhcpc: add comment about server IP 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 14:47:41 +02:00
Denys Vlasenko
fbca0c68a7 udhcpc: in fill_envp, export BOOTP fields first 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 14:24:18 +02:00
Denys Vlasenko
cd4d78f525 dhcpc: fix the case where we might add extra space at the end of envvar. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 13:21:55 +02:00
Denys Vlasenko
1dff672335 udhcpc: fix 6rd option formatting (was using 4 more bytes than there is) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 12:29:18 +02:00
Denys Vlasenko
42816c204d udhcpc: remove unused argument in sprint_nip6 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 10:52:07 +02:00
Denys Vlasenko
7981d79ef0 udhcpc: small code shrink 
function                                             old     new   delta
udhcp_recv_raw_packet                                430     425      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 10:34:05 +02:00
Denys Vlasenko
f461385521 typo fix in comment 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-20 08:54:16 +02:00
Denys Vlasenko
1f56e51ca1 udhcpc: add support for DHCP option 212 (RFC 5969) 
The patch is from OpenWRT people.

function                                             old     new   delta
xmalloc_optname_optval                               637     874    +237
dhcp_option_strings                                  237     243      +6
dhcp_optflags                                         68      70      +2
len_of_option_as_string                               12      13      +1
dhcp_option_lengths                                   12      13      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 247/0)             Total: 247 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-19 22:40:35 +02:00
Vladislav Grishenko
6464f15ddb udhcpc: on SIGUSR1, limit renew attempts time to 20 seconds; then do total reconfig 
Scenario:

1. udhcpc gets lease for 86400 secs and sleeps for 43200 before renew attempt

2. PC gets physically disconnected and connected to another network

3. some phy control software sends SIGUSR1 to renew the lease, SIGUSR2 isn't
used because newly connected network could be the same as before

4. udhcpc sends unicast renew requests until lease timeout fall to 60 sec.
They are ignored by new network dhcp servers

5. udhcpc sends broadcast rebind requests for 60 seconds, which are NAKed
or ignored too

6. udhcpc deconfigs and starting from discover state, gets new lease for the
new network

So, pt.4+5 it could take up to 86400 secs without correct lease, which is
too long and not acceptable.

Second SIGUSR1 will immediately run into deconfig/discover state, which is
not preferable in case of the same subnet replugged.

This patch makes sure after SIGUSR1 timeout is no more than -A NUM
(usually 20 sec). It means that renew will be requested via broadcast,
and if no replies come back, full deconf/reconf cycle will be initiated
in 20 seconds.

Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-18 01:37:47 +02:00
Leonid Lisovskiy
6c9c0a1dc9 udhcp: IF_UDHCP_VERBOSE() macro - improve code readability 
Signed-off-by: Leonid Lisovskiy <lly.dev@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-10-18 00:35:47 +02:00
Baruch Siach
289c47b049 udhcp: remove the declaration of non-existent udhcp_checksum 
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-09 11:03:45 +02:00
Baruch Siach
e8f36330d9 networking: consolidate the IP checksum code. -129 bytes. 
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-07 17:55:40 +02:00
Dan Fandrich
f533ec8767 *: simplify Ethernet header includes 
Signed-off-by: Dan Fandrich <dan@coneharvesters.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-10 05:17:59 +02:00
Denys Vlasenko
66426760be *: remove "Options:" string from help texts 
function                                             old     new   delta
packed_usage                                       28706   28623     -83

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-05 03:58:28 +02:00
Denys Vlasenko
5d3aaceb79 udhcpc: allow -O OPT take numeric params 
function                                             old     new   delta
udhcpc_main                                         2623    2654     +31

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-06-04 05:07:16 +02:00
Denys Vlasenko
7945808c87 udhcp: fix some default values from "" to NULL 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-05-03 16:46:47 +02:00
Nigel Hathaway
fb6b173ff7 udhcp: add FEATURE_UDHCP_8021Q option 
function                                             old     new   delta
dhcp_option_strings                                  217     237     +20
dhcp_optflags                                         64      68      +4

Signed-off-by: Nigel Hathaway <Nigel.Hathaway@ubiquisys.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-26 02:50:00 +02:00
Nigel Hathaway
c37d4c67e8 dhcpc: export unrecognized options in "optNN=XXXXXXXXX" form 
function                                             old     new   delta
udhcp_run_script                                     609     818    +209

Signed-off-by: Nigel Hathaway <Nigel.Hathaway@ubiquisys.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-26 02:38:29 +02:00
Pere Orga
5bc8c005a8 move remaining help text from include/usage.src.h 
Signed-off-by: Pere Orga <gotrunks@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-04-11 03:29:49 +02:00
Denys Vlasenko
9ac5596a51 udhcpc: emit "correct" secs field 
In theory, sending secs set to constant zero should be ok too.
But some bleeping servers can actually be configured to answer ONLY
if secs is bigger than a preset value (!!)
http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/bootpd.8.html
grep for "reply_threshold_seconds"

function                                             old     new   delta
udhcpc_main                                         2573    2623     +50

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-12 05:37:54 +01:00
Keith Young
e6bb8d339f udhcpc: add -B option 
function                                             old     new   delta
udhcpc_longopts                                        -     262    +262
add_client_options                                   218     239     +21
packed_usage                                       28149   28163     +14
static.udhcpc_longopts                               250       -    -250
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/0 up/down: 297/-250)           Total: 47 bytes

Signed-off-by: Keith Young <stripydog7@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-03-07 03:19:42 +01:00
Denys Vlasenko
e3b1a1fd28 Replace "depends on PLATFORM_LINUX" with "select PLATFORM_LINUX" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-02-26 22:24:08 +01:00
Vladislav Grishenko
5827167338 udhcpd: optional IP selection based on MAC hash 
function                                             old     new   delta
find_free_or_expired_nip                             153     225     +72

Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-02-16 13:31:30 +01:00
Vladislav Grishenko
713e6d78e1 udhcpc: use more correct, and more importantly, more understandable BPF code 
Signed-off-by: Vladislav Grishenko <themiron@mail.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-02-14 04:50:30 +01:00
Denys Vlasenko
fbea220560 udhcpc: fix a problem with binary-encoded options 
function                                             old     new   delta
attach_option                                        395     413     +18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-02-06 18:00:58 +01:00
Denys Vlasenko
dd169e8468 eliminate aliasing warnings in traceroute.c and udhcp/socket.c 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-01-20 12:13:23 +01:00
Denys Vlasenko
df1689138e remove a few aliasing warnings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-01-16 01:25:34 +01:00
Denys Vlasenko
dc7e5c46b0 libbb unicode: comment out usused function and unused parameter 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2011-01-11 13:08:28 +01:00
Denys Vlasenko
8993c3f260 udhcpc: document SIGUSRn effect in help text 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-12-25 06:21:54 +01:00
Denys Vlasenko
713d241852 dhcpd: reply with NAK to clients in INIT-REBOOT state w/o existing lease 
We were not responding to them at all.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-11-28 21:51:44 +01:00
Denys Vlasenko
fa5e295600 dhcpd: smaller code: do not look for REQUESTED_IP twice 
text    data     bss     dec     hex filename
 883235     936   17192  901363   dc0f3 busybox_old
 883219     936   17192  901347   dc0e3 busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-11-28 01:10:51 +01:00
Denys Vlasenko
e4dcba1c10 *: whitespace fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-28 18:57:19 +02:00
Denys Vlasenko
0bb35e19a7 udhcpd: reduce stack usage by ~700 bytes. +28 bytes code size 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-21 12:33:10 +02:00
Denys Vlasenko
5d374e9b14 udhcpc: exit if iface disappeared; use correct MAC if it changes 
function                                             old     new   delta
udhcpc_main                                         2560    2618     +58

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 22:26:38 +02:00
Denys Vlasenko
c72c1d7b31 udhcpc: reduce stack usage by de-inlining routines with on-stack pkt buf 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 22:08:16 +02:00
Denys Vlasenko
a5048fa386 udhcpc: periodically reread our ifindex and mac 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 21:38:29 +02:00
Denys Vlasenko
b3af65b95d udhcpc: emit maxsize option in all non-NAK type packets 
Before, we were sending them only in DISCOVER packets.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 21:37:23 +02:00
Denys Vlasenko
2c3b71a0d2 dhcp: typo fix: UPD_DHCP_SIZE -> UDP_DHCP_SIZE 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-20 18:04:36 +02:00
Denys Vlasenko
c59e06e471 udhcpc: better help text 
function                                             old     new   delta
packed_usage                                       27452   27486     +34

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-20 16:10:59 +02:00
Denys Vlasenko
d3c5ab703b udhcpc: remove now-unneeded definitions of vendor and client-id opts 
function                                             old     new   delta
dhcp_optflags                                         68      64      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 02:03:30 +02:00
Denys Vlasenko
1cbdc03411 udhcpc: remove -c CLIENTID, it is hard to use, -x 61:hexstring does the same better 
function                                             old     new   delta
packed_usage                                       27802   27808      +6
static.udhcpc_longopts                               261     250     -11
udhcpc_main                                         2799    2780     -19
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 6/-30)             Total: -24 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 01:42:37 +02:00
Denys Vlasenko
9e244c7600 udhcpc: move usage text to .c file. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2010-10-20 01:38:56 +02:00
Denys Vlasenko
9ff50b8697 *: deinline SWAP_xE64 on 32-bit CPUs. Wins !90 bytes both on 32 and 64 bits 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-18 11:40:26 +02:00
Denys Vlasenko
b102e12253 *: use SWAP_BE64 instead of open-coding it 
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
 2010-10-18 11:39:47 +02:00