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runqemu-ifup: configurable tap names

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Feature: Hard-coding the interface names to tap* is not always a good
idea. Introduce an environment variable which allows to change this:
OE_TAP_NAME.

(From OE-Core rev: c9ea17c13935e805a5b7497b14e1f049b0548779)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Adrian Freihofer 2023-06-22 19:01:22 +02:00 committed by Richard Purdie
parent 2d0913ff6f
commit 2401847d73
1 changed files with 10 additions and 6 deletions
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16
scripts/runqemu-ifup
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@ -40,12 +40,16 @@ else
fi
if taps=$(ip tuntap list 2>/dev/null); then
tap_no=$(( $(echo "$taps" |cut -f 1 -d ":" | sed 's/tap//g' | sort -rn | head -n 1) + 1 ))
ip tuntap add tap$tap_no mode tap group "$GROUP" && TAP=tap$tap_no
if [ -z "$OE_TAP_NAME" ]; then
OE_TAP_NAME=tap
fi
if [ -z $TAP ]; then
if taps=$(ip tuntap list 2>/dev/null); then
tap_no=$(( $(echo "$taps" |cut -f 1 -d ":" | sed "s/$OE_TAP_NAME//g" | sort -rn | head -n 1) + 1 ))
ip tuntap add "$OE_TAP_NAME$tap_no" mode tap group "$GROUP" && TAP="$OE_TAP_NAME$tap_no"
fi
if [ -z "$TAP" ]; then
echo "Error: Unable to find a tap device to use"
exit 1
fi
@ -69,7 +73,7 @@ if [ ! -x "$IPTABLES" ]; then
exit 1
fi
n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
n=$[ (`echo $TAP | sed "s/$OE_TAP_NAME//"` * 2) + 1 ]
$IPTOOL addr add 192.168.7.$n/32 broadcast 192.168.7.255 dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then
@ -83,7 +87,7 @@ if [ $STATUS -ne 0 ]; then
exit 1
fi
dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
dest=$[ (`echo $TAP | sed "s/$OE_TAP_NAME//"` * 2) + 2 ]
$IPTOOL route add to 192.168.7.$dest dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then