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runqemu-ifdown: ensure to clean up TAP

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In runqemu-ifup, ip command is used to add TAP; in runqemu-ifdown,
we should do the reversed logic, using ip command to delete TAP, to
make sure TAP is cleaned up by ourselves.

I can see that in runqemu-ifdown script, 'tunctl -d' and 'iptables'
commands are used to deal with TAP, but these two commands cannot
make sure that the TAP is cleaned up.

runqemu-ifup uses 'ip' to set up TAP, we really need to do the opposite
in runqemu-ifdown.

(From OE-Core rev: 322e41de7f4fb21315bf75f1038314c31ac4754b)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Chen Qi 2018-06-07 15:52:47 +08:00 committed by Richard Purdie
parent 27061a274f
commit 559f4951e2
1 changed files with 10 additions and 0 deletions
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10
scripts/runqemu-ifdown
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@ -51,6 +51,16 @@ fi
$TUNCTL -d $TAP
IFCONFIG=`which ip 2> /dev/null`
if [ "x$IFCONFIG" = "x" ]; then
# better than nothing...
IFCONFIG=/sbin/ip
fi
if [ -x "$IFCONFIG" ]; then
if `$IFCONFIG link show $TAP > /dev/null 2>&1`; then
$IFCONFIG link del $TAP
fi
fi
# cleanup the remaining iptables rules
IPTABLES=`which iptables 2> /dev/null`
if [ "x$IPTABLES" = "x" ]; then