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* typo fixDenys Vlasenko2024-06-011-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcp: Avoid leaking uninitialized/stale dataRuss Dill2023-10-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I noticed a commit in connman: "gdhcp: Avoid leaking stack data via unitiialized variable" [1] Since gdhcp is just BusyBox udhcp with the serial numbers filed off, I checked if BusyBox udhcp has a related issue. The issue is that the get_option logic assumes any data within the memory area of the buffer is "valid". This reduces the complexity of the function at the cost of reading past the end of the actually received data in the case of specially crafted packets. This is not a problem for the udhcp_recv_kernel_packet data path as the entire memory area is zeroed. However, d4/d6_recv_raw_packet does not zero the memory. Note that a related commit [2] is not required as we are zeroing any data that can be read by the get_option function. [1] https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=a74524b3e3fad81b0fd1084ffdf9f2ea469cd9b1 [2] https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=58d397ba74873384aee449690a9070bacd5676fa function old new delta d4_recv_raw_packet 484 497 +13 d6_recv_raw_packet 216 228 +12 .rodata 105390 105381 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 25/-9) Total: 16 bytes Signed-off-by: Russ Dill <russ.dill@gmail.com> Cc: Colin Wee <cwee@tesla.com> Cc: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: use a different default config scriptDenys Vlasenko2022-12-151-2/+2
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: align FF02__1_2[]Denys Vlasenko2022-12-151-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: add some commentsDenys Vlasenko2022-12-141-0/+10
| | | | | | RFCs for DHCPv6 are written rather badly... Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: remove stray commentDenys Vlasenko2022-12-131-1/+0
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: downgrade "opening listen socket" log level to 2Denys Vlasenko2022-08-021-1/+1
| | | | | | This matches udhcpc for IPv4. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: fix sending of renew messagesDenys Vlasenko2022-08-021-2/+3
| | | | | | | function old new delta d6_listen_socket - 150 +150 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: add missed big-endian conversionsDenys Vlasenko2022-07-131-0/+2
| | | | | | | function old new delta option_to_env 686 694 +8 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* *: slap on a few ALIGN* where appropriateDenys Vlasenko2022-02-061-1/+1
| | | | | | | | | | | | | | The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map" function old new delta .rodata 108586 108460 -126 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126) Total: -126 bytes text data bss dec hex filename 970412 4219 1848 976479 ee65f busybox_old 970286 4219 1848 976353 ee5e1 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: fix udhcp_find_option to actually find DHCP6 optionsDenys Vlasenko2021-12-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | udhcp_insert_new_option treats code for IPv6 as follows: new->data[D6_OPT_CODE] = code >> 8; new->data[D6_OPT_CODE + 1] = code & 0xff; udhcp_find_option tests the code as follows: while (opt_list && opt_list->data[OPT_CODE] < code) ... if (opt_list && opt_list->data[OPT_CODE] == code) So yes, OPT_CODE and D6_OPT_CODE are both 0, but the D6_OPT_CLIENTID = 1 value means that the 1 is in the seconds byte, and udhcp_find_option is only looking at the first byte, So the send_d6_release can never find it the created option. function old new delta udhcp_find_option 28 53 +25 attach_option 276 284 +8 udhcpc6_main 2602 2607 +5 perform_d6_release 262 267 +5 udhcpd_main 1518 1520 +2 udhcpc_main 2542 2544 +2 add_serverid_and_clientid_options 46 48 +2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/0 up/down: 49/0) Total: 49 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* *: more --help tweaksDenys Vlasenko2021-06-161-9/+9
| | | | | | | function old new delta packed_usage 33522 33534 +12 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: do not pass xid around, keep it in client_data.xidDenys Vlasenko2021-06-151-28/+28
| | | | | | | | | | | | | | | | | | | | | function old new delta perform_release 105 169 +64 perform_d6_release 259 262 +3 init_d6_packet 84 85 +1 send_d6_discover 286 285 -1 send_d6_select 128 126 -2 send_d6_renew 176 174 -2 send_d6_info_request 65 63 -2 udhcpc_main 2555 2551 -4 send_select 130 122 -8 send_renew 99 91 -8 send_discover 89 81 -8 udhcpc6_main 2636 2602 -34 send_release 74 - -74 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 3/9 up/down: 68/-143) Total: -75 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: on SIGUSR1, do not go from rebind to renew stateDenys Vlasenko2021-06-031-4/+6
| | | | | | | | | | function old new delta udhcpc6_main 2628 2636 +8 udhcpc_main 2556 2563 +7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 15/0) Total: 15 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: code shrink, rename functions, no logic changesDenys Vlasenko2021-06-031-2/+2
| | | | | | | | | | | | | | | function old new delta d4_run_script - 739 +739 d4_recv_raw_packet - 484 +484 d4_run_script_deconfig - 12 +12 perform_release 207 200 -7 udhcpc_main 2598 2556 -42 udhcp_recv_raw_packet 484 - -484 udhcp_run_script 739 - -739 ------------------------------------------------------------------------------ (add/remove: 3/2 grow/shrink: 0/2 up/down: 1235/-1272) Total: -37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: when renewing, send 1 packet (not 3), on failure go back to BOUNDDenys Vlasenko2021-06-031-17/+26
| | | | | | | | | | | | | | | | | This restores old behavior where we slept for 1/2 of lease, then tried renewing, thel slept for 1/4 and tried again, etc. But now we will NOT be listening to all packets for 1/2 of lease time, processing (rejecting) everyone else's DHCP traffic. We'll go back to bound state, where we have no listening socket at all. function old new delta udhcpc6_main 2600 2655 +55 udhcpc_main 2608 2625 +17 .rodata 103250 103249 -1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 72/-1) Total: 71 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: remove superfluous "created raw socket" log messageDenys Vlasenko2021-06-021-3/+0
| | | | | | | | | | function old new delta change_listen_mode 299 280 -19 .rodata 103272 103250 -22 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-41) Total: -41 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: improve logs - show offer as it is receivedDenys Vlasenko2021-06-021-1/+2
| | | | | | | | | | | | function old new delta udhcpc_main 2566 2608 +42 .rodata 103248 103272 +24 udhcp_recv_raw_packet 559 562 +3 d6_recv_raw_packet 254 255 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 70/0) Total: 70 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: close listening socket more eagerly (e.g. across script runs)Denys Vlasenko2021-06-021-12/+20
| | | | | | | | | | function old new delta udhcpc6_main 2571 2600 +29 udhcpc_main 2588 2566 -22 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 29/-22) Total: 7 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: get rid of client_data.fqdn fieldDenys Vlasenko2021-06-021-25/+15
| | | | | | | | | | | | | function old new delta attach_option 253 276 +23 udhcpc_main 2582 2588 +6 udhcpc6_main 2579 2571 -8 add_client_options 175 158 -17 udhcp_insert_new_option 169 138 -31 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/3 up/down: 29/-56) Total: -27 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: remove deprecated -H/-h HOSTNAME options (9 years), deprecate -V VENDORDenys Vlasenko2021-06-021-1/+2
| | | | | | | | | | | | | | | function old new delta udhcpc_main 2563 2582 +19 dhcp_option_strings 294 301 +7 dhcp_optflags 80 82 +2 .rodata 103250 103248 -2 udhcpc_longopts 252 241 -11 add_client_options 209 175 -34 alloc_dhcp_option 59 - -59 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 3/3 up/down: 28/-106) Total: -78 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: include client-id option in DECLINEs, even if it's a custom -x ↵Denys Vlasenko2021-06-021-28/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | 61:HEX option client_data.vendorclass, .hostname and .fqdn probably need the same treatment: just insert them into the list of -x opts, get rid of if (client_data.vendorclass) udhcp_add_binary_option(packet, client_data.vendorclass); if (client_data.hostname) udhcp_add_binary_option(packet, client_data.hostname); if (client_data.fqdn) udhcp_add_binary_option(packet, client_data.fqdn); function old new delta udhcp_insert_new_option - 166 +166 perform_release 171 207 +36 perform_d6_release 227 259 +32 udhcpc6_main 2558 2580 +22 init_d6_packet 103 84 -19 udhcpc_main 2585 2564 -21 attach_option 397 253 -144 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/3 up/down: 256/-184) Total: 72 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: fix "untangle timeout and remaining lease" falloutDenys Vlasenko2021-06-011-13/+21
| | | | | | | | | | | | As reported in bug 13776, before this fix the renew never times out. function old new delta udhcpc_main 2541 2585 +44 udhcpc6_main 2567 2558 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 44/-9) Total: 35 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: fold perform_renew() into its only callerDenys Vlasenko2021-05-011-26/+18
| | | | | | | | | | | | function old new delta udhcpc_main 2550 2541 -9 udhcpc6_main 2576 2567 -9 change_listen_mode 321 299 -22 .rodata 103294 103225 -69 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-109) Total: -109 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc[6]: untangle "timeout" and "remaining lease"; reduce min lease to 30 ↵Denys Vlasenko2021-05-011-45/+35
| | | | | | | | | | | | | | | | | | | | | | | | seconds This allows to fix a problem that we wait for renew replies for up to half the lease (!!!) if they never come. Make it so that lease of 60 seconds is not "rounded up" to 120 seconds - set lower "sanity limit" to 30 seconds. After 3 failed renew attempts, switch to rebind. After this change, we can have more flexible choice of when to do the first renew - does not need to be equal to lease / 2. function old new delta udhcpc6_main 2568 2576 +8 .rodata 103339 103294 -45 udhcpc_main 2609 2550 -59 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 8/-104) Total: -96 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcp: reuse stringsDenys Vlasenko2021-02-211-6/+8
| | | | | | | | text data bss dec hex filename 1019916 559 5020 1025495 fa5d7 busybox_old 1019906 559 5020 1025485 fa5cd busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: Add support to change default interface nameAndre Kalb2021-01-011-2/+2
| | | | | Signed-off-by: Andre Kalb <Andre.Kalb@sma.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* help text: use -P PORT formDenys Vlasenko2020-12-181-2/+2
| | | | | | | function old new delta packed_usage 33502 33491 -11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: code shrink - sending functions do not need ifindex parameterDenys Vlasenko2020-12-151-9/+6
| | | | | | | | | | | | | | | function old new delta d6_send_raw_packet_from_client_data_ifindex - 427 +427 d6_send_kernel_packet_from_client_data_ifindex - 275 +275 send_d6_renew 182 176 -6 perform_d6_release 246 240 -6 d6_mcast_from_client_data_ifindex 45 39 -6 d6_send_kernel_packet 274 - -274 d6_send_raw_packet 429 - -429 ------------------------------------------------------------------------------ (add/remove: 2/2 grow/shrink: 0/3 up/down: 702/-721) Total: -19 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* gcc-9.x warning fixesDenys Vlasenko2020-10-011-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: use correct multicast MACUwe Glaeser2020-06-211-1/+5
| | | | | | | | function old new delta static.MAC_DHCP6MCAST_ADDR - 6 +6 Signed-off-by: Uwe Glaeser <uwe.glaeser@dormakaba.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: add ELAPSED_TIME option to outgoing packetsDenys Vlasenko2019-09-241-1/+17
| | | | | | | | | | | function old new delta init_d6_packet 53 121 +68 udhcpc_main 2577 2582 +5 udhcpc6_main 2593 2597 +4 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/0 up/down: 77/0) Total: 77 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: support stateless DHCPv6Eivind Versvik2019-08-241-9/+72
| | | | | | | | | | | | | | | -l will send Information-Request to request configuration parameters function old new delta packed_usage 33114 33180 +66 send_d6_info_request - 62 +62 udhcpc6_main 2534 2593 +59 udhcpc6_longopts 199 211 +12 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 3/0 up/down: 199/0) Total: 199 bytes Signed-off-by: Eivind Versvik <versvikeivind@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* libbb: reduce the overhead of single parameter bb_error_msg() callsJames Byrne2019-07-021-17/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Back in 2007, commit 0c97c9d43707 ("'simple' error message functions by Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower overhead call to bb_perror_msg() when only a string was being printed with no parameters. This saves space for some CPU architectures because it avoids the overhead of a call to a variadic function. However there has never been a simple version of bb_error_msg(), and since 2007 many new calls to bb_perror_msg() have been added that only take a single parameter and so could have been using bb_simple_perror_message(). This changeset introduces 'simple' versions of bb_info_msg(), bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and bb_herror_msg_and_die(), and replaces all calls that only take a single parameter, or use something like ("%s", arg), with calls to the corresponding 'simple' version. Since it is likely that single parameter calls to the variadic functions may be accidentally reintroduced in the future a new debugging config option WARN_SIMPLE_MSG has been introduced. This uses some macro magic which will cause any such calls to generate a warning, but this is turned off by default to avoid use of the unpleasant macros in normal circumstances. This is a large changeset due to the number of calls that have been replaced. The only files that contain changes other than simple substitution of function calls are libbb.h, libbb/herror_msg.c, libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c, networking/udhcp/common.h and util-linux/mdev.c additonal macros have been added for logging so that single parameter and multiple parameter logging variants exist. The amount of space saved varies considerably by architecture, and was found to be as follows (for 'defconfig' using GCC 7.4): Arm: -92 bytes MIPS: -52 bytes PPC: -1836 bytes x86_64: -938 bytes Note that for the MIPS architecture only an exception had to be made disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h) because it made these files larger on MIPS. Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: fix aliasing warningDenys Vlasenko2019-06-111-2/+2
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* dhcp: downgrade "got raw socket fd" message to log3, make log2 default maxDenys Vlasenko2019-05-311-1/+1
| | | | | | | | | log3 messages are very much redundant function old new delta change_listen_mode 322 302 -20 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* dhcp: get rid of static data signal_pipeDenys Vlasenko2019-05-311-4/+4
| | | | | | | | | | | | | | | | | function old new delta udhcp_sp_setup 65 110 +45 udhcp_sp_fd_set 60 59 -1 udhcpd_main 1442 1437 -5 udhcpc_main 2684 2679 -5 signal_pipe 8 - -8 packed_usage 33292 33284 -8 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/4 up/down: 45/-27) Total: 18 bytes text data bss dec hex filename 952746 481 7296 960523 ea80b busybox_old 952768 481 7288 960537 ea819 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcp: rename client_config to client_data, server_config to server_dataDenys Vlasenko2019-05-261-76/+76
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* dhcp: get rid of last global dataDenys Vlasenko2019-05-261-39/+38
| | | | | | | | | | | | function old new delta udhcpc_main 2680 2684 +4 state 1 - -1 listen_mode 1 - -1 sockfd 4 - -4 ------------------------------------------------------------------------------ (add/remove: 0/3 grow/shrink: 1/0 up/down: 4/-6) Total: -2 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: unbreakDenys Vlasenko2019-05-151-0/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Optionally re-introduce bb_info_msg()James Byrne2019-04-301-25/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Between Busybox 1.24.2 and 1.25.0 the bb_info_msg() function was eliminated and calls to it changed to be bb_error_msg(). The downside of this is that daemons now log all messages to syslog at the LOG_ERR level which makes it hard to filter errors from informational messages. This change optionally re-introduces bb_info_msg(), controlled by a new option FEATURE_SYSLOG_INFO, restores all the calls to bb_info_msg() that were removed (only in applets that set logmode to LOGMODE_SYSLOG or LOGMODE_BOTH), and also changes informational messages in ifplugd and ntpd. The code size change of this is as follows (using 'defconfig' on x86_64 with gcc 7.3.0-27ubuntu1~18.04) function old new delta bb_info_msg - 182 +182 bb_vinfo_msg - 27 +27 static.log7 194 198 +4 log8 190 191 +1 log5 190 191 +1 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 3/0 up/down: 215/-45) Total: 170 bytes If you don't care about everything being logged at LOG_ERR level then when FEATURE_SYSLOG_INFO is disabled Busybox actually gets smaller: function old new delta static.log7 194 200 +6 log8 190 193 +3 log5 190 193 +3 syslog_level 1 - -1 bb_verror_msg 583 581 -2 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 3/1 up/down: 12/-48) Total: -36 bytes Signed-off-by: James Byrne <james.byrne@origamienergy.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: code shrinkDenys Vlasenko2019-04-141-3/+0
| | | | | | | function old new delta d6_read_interface 593 582 -11 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: add a few comments, no code changes.Denys Vlasenko2019-04-131-0/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc6: make it enabled in defconfigDenys Vlasenko2019-04-131-3/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: don't exit after backgrounding on -n -bAndrey Mazo2019-02-271-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | Currently, running "udhcpc -n -b" causes udhcpc to go to background and then exit after some time unless a lease is obtained. It's not very useful to do so as the calling process doesn't know if the lease was obtained or not anyway. The code actually tries to favor "-b" over "-n", but doesn't clear "-n" flag while clearing "-b" after backgrounding. So, clear "-n" flag after going into background. This effectively makes "-b" override "-n" completely and "-n -b" behave the same as "-b". This allows to override default "-n" option, passed to udhcpc by ifupdown, without recompiling busybox. URL: https://bugs.busybox.net/11691 Signed-off-by: Andrey Mazo <ahippo@yandex.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* config: update size informationDenys Vlasenko2018-12-281-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: code shrinkDenys Vlasenko2018-11-031-1/+3
| | | | | | | | | | function old new delta perform_release 112 172 +60 send_release 81 - -81 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/0 up/down: 60/-81) Total: -21 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: ensure at least one unicast renew attemptDenys Vlasenko2018-10-301-2/+3
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: give SIGUSR1-induced renew one chance of unicast renewDenys Vlasenko2018-09-281-5/+3
| | | | | | | | | | The caps were inconsistent: timeout to renew was capped at 20 seconds, and any renews with timeout <= 60 seconds were forced to broadcast. function old new delta udhcpc_main 2683 2680 -3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* udhcpc: remove code which requires server ID to be on local networkDenys Vlasenko2018-06-211-3/+1
| | | | | | | | | | | | | | | | | This reverts "udhcpc: paranoia when using kernel UDP mode for sending renew: server ID may be bogus". Users complain that they do have servers behind routers (with DHCP relays). function old new delta send_packet 168 166 -2 bcast_or_ucast 25 23 -2 udhcp_send_kernel_packet 301 295 -6 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-10) Total: -10 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-19 20:09:16 +0000