base-files: add macaddr_{add,2bin,setbit_la} helpers

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35614 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/Makefile b/package/base-files/Makefile
index 26fa1b7..789b5f6 100644 (file)
--- a/package/base-files/Makefile
+++ b/package/base-files/Makefile
@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 include $(INCLUDE_DIR)/version.mk
 
 PKG_NAME:=base-files
-PKG_RELEASE:=132
+PKG_RELEASE:=133
 
 PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/
 PKG_BUILD_DEPENDS:=opkg/host

diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 2022e8a..a488f4d 100755 (executable)
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -274,6 +274,30 @@ mtd_get_mac_binary() {
        dd bs=1 skip=$offset count=6 if=$part 2>/dev/null | hexdump -v -n 6 -e '5/1 "%02x:" 1/1 "%02x"'
 }
 
+macaddr_add() {
+       local mac=$1
+       local val=$2
+       local oui=${mac%:*:*:*}
+       local nic=${mac#*:*:*:}
+
+       nic=$(printf "%06x" $((0x${nic//:/} + $val & 0xffffff)) | sed 's/^\(.\{2\}\)\(.\{2\}\)\(.\{2\}\)/\1:\2:\3/')
+       echo $oui:$nic
+}
+
+macaddr_setbit_la()
+{
+       local mac=$1
+
+       printf "%02x:%s" $((0x${mac%%:*} | 0x02)) ${mac#*:}
+}
+
+macaddr_2bin()
+{
+       local mac=$1
+
+       echo -ne \\x${mac//:/\\x}
+}
+
 strtok() { # <string> { <variable> [<separator>] ... }
        local tmp
        local val="$1"