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Paul Fertser 174ff7d754 base-files: send informational UDP message each second waiting 
The preinit network initialisation and failsafe informational message
are inherently racy as the interface takes some time to become
functional after "ip link set $pi_ifname up" command.

Consider this timing:

[   12.002713] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[   12.008819] IPv6: ADDRCONF(NETDEV_UP): eth1.1: link is not ready
[   12.118877] random: procd: uninitialized urandom read (4 bytes read)
[   13.068614] eth1: link up (1000Mbps/Full duplex)
[   13.073309] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[   13.080445] IPv6: ADDRCONF(NETDEV_CHANGE): eth1.1: link becomes ready

Since the UDP message was sent prior to link becoming ready, it was
never seen on the wire.

The default failsafe timeout is set to 2 seconds, so with this patch
there are two attempts to send the message, one spent in vain, and the
other visible in tcpdump on an attached host. Of course, in cases when
the interface is brought up faster it leads to two messages, however it
should be harmless. This patch (almost) doesn't affect normal boot time
while still allowing to enter failsafe reliably with a single button
press, matching the official "generic failsafe" documentation.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
2019-12-19 22:41:57 +01:00
.github
config config: kernel: fix typo in HFSPLUG_FS_POSIX_ACL 2019-11-28 02:02:17 +02:00
include kernel: bump 4.19 to 4.19.88 2019-12-10 09:50:42 +01:00
package base-files: send informational UDP message each second waiting 2019-12-19 22:41:57 +01:00
scripts scripts/dl_github_archive.py: fix python3 str, bytes confusion 2019-11-04 11:11:19 +00:00
target ipq806x: switch to 4.19 kernel version 2019-12-19 22:41:57 +01:00
toolchain glibc: update to latest 2.27 commit (BZ #2503, BZ #2504) 2019-12-11 22:31:54 +01:00
tools tools: tplink-safeloader: fix whitespace issues 2019-11-27 22:54:36 +01:00
.gitattributes
.gitignore gitignore: ignore patches in OpenWrt root directory 2019-11-06 00:27:55 +01:00
BSDmakefile
Config.in
feeds.conf.default
LICENSE
Makefile build: add buildinfo as single Makefile target 2019-10-17 14:01:33 +02:00
README build: switch to Python 3 2019-07-26 08:09:16 +02:00
rules.mk rules.mk: remove "$(STAGING_DIR)/include" 2019-11-02 20:51:56 +01:00

README 

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------

This is the buildsystem for the OpenWrt Linux distribution.

To build your own firmware you need a Linux, BSD or MacOSX system (case
sensitive filesystem required). Cygwin is unsupported because of the lack
of a case sensitive file system.

You need gcc, binutils, bzip2, flex, python3.5+, perl, make, find, grep, diff,
unzip, gawk, getopt, subversion, libz-dev and libc headers installed.

1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
defined in feeds.conf / feeds.conf.default

2. Run "./scripts/feeds install -a" to install symlinks for all obtained
packages into package/feeds/

3. Run "make menuconfig" to select your preferred configuration for the
toolchain, target system & firmware packages.

4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.

Sunshine!
	Your OpenWrt Community
	http://www.openwrt.org