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author | Adrian Schmutzler <freifunk@adrianschmutzler.de> | 2019-10-22 12:37:13 +0200 |
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committer | Adrian Schmutzler <freifunk@adrianschmutzler.de> | 2019-11-03 00:26:17 +0100 |
commit | 19724e28c81e3ff642f09c49f612cd147c54a697 (patch) | |
tree | 278c45d3b1563cee6108e65c3b5856dbab304062 /target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address | |
parent | 0975c35b83a632f9662d1944307f87da9db06154 (diff) | |
download | upstream-19724e28c81e3ff642f09c49f612cd147c54a697.tar.gz upstream-19724e28c81e3ff642f09c49f612cd147c54a697.tar.bz2 upstream-19724e28c81e3ff642f09c49f612cd147c54a697.zip |
ramips: split base-files into subtargets
While most of the target's contents are split into subtargets, the
base-files are maintained for the target as a whole.
However, OpenWrt already implements a mechanism that will use (and
even prefer) files in the subtargets' directories. This can be
exploited to make several scripts subtarget-specific and thus save
some space.
In certain cases, keeping files in parent (=target) base-files was
more convenient, and thus no splitting was performed for those.
Note that this will increase overall code lines, but reduce code
per subtarget.
base-files ipk size reduction:
master (mt7621) 60958 B
split (mt7620) 46358 B (- 14.3 kiB)
split (mt7621) 48759 B (- 11.9 kiB)
split (mt76x8) 44948 B (- 15.6 kiB)
split (rt288x) 43508 B (- 17.0 kiB)
split (rt305x) 45616 B (- 15.0 kiB)
split (rt3883) 44176 B (- 16.4 kiB)
Run-tested on:
GL.iNet GL-MT300N-V2 (mt76x8)
D-Link DWR-116 (mt7620)
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Diffstat (limited to 'target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address')
-rwxr-xr-x | target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address b/target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address new file mode 100755 index 0000000000..dad15c5842 --- /dev/null +++ b/target/linux/ramips/mt7621/base-files/sbin/fixup-mac-address @@ -0,0 +1,80 @@ +#!/bin/sh +. /lib/functions.sh +. /lib/functions/system.sh + +partname="" +offset="" +NEW_MAC= +YES= + +board=$(board_name) +case $board in + mqmaker,witi) + partname=factory + offset=$((0xe000)) + ;; + *) + echo "Unsupported board" + exit 1 + ;; +esac + +while [ -n "$1" ]; do + case "$1" in + ??:??:??:??:??:??) NEW_MAC="$1";; + -y) YES=1;; + *) + cat <<EOF +Unknown option/argument '$1' +Usage: $0 [-y] [<macaddr>] +EOF + exit 1 + ;; + esac + shift +done + +ask_bool() { + local message="$1" + local default="$((! ${2:-0}))" + [ -n "$YES" ] && return 0 + echo -n "$message " + read opt + case "$opt" in + y|Y) return 0;; + n|N) return 1;; + *) return $default;; + esac +} + +convert_hex() { + hexdump -e '/1 "%02x "' +} + +gen_mac() { + dd if=/dev/urandom bs=6 count=1 2>/dev/null +} + +mac="$(mtd_get_mac_binary $partname $offset)" +case "$mac" in + 00:00:00:00:00:00);; + ff:ff:ff:ff:ff:ff);; + *) + echo "Current MAC address: $mac" + ask_bool "Overwrite (y/N)?" 0 || exit + ;; +esac + +if [ -n "$NEW_MAC" ]; then + set -- $(echo "$NEW_MAC" | sed 's,:, ,g') +else + set -- $(gen_mac | convert_hex) + set -- $(printf %02x $(( (0x$1 & 0xfe) | 0x02 ))) $2 $3 $4 $5 $6 +fi +echo "New MAC address: $1:$2:$3:$4:$5:$6" +ask_bool "Write to EEPROM (y/N)?" || exit + +part=$(find_mtd_part "$partname") +[ -n "$part" ] || exit +echo -ne "\x$1\x$2\x$3\x$4\x$5\x$6" | dd of=$part conv=notrunc bs=1 count=6 seek=$offset 2>/dev/null +echo "Done" |