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runqemu-ifup: Check if the tap interface is set up correctly 

The process to set up a tap interface is as follows:
    - tap interface is created
    - An IP address is assigned to the tap interface
    - The interface is bring up
    - A route is added to the target using the tap
      interface

Of all the previous steps, only the first one is
check if it was sucessful. The status of the others
are ignored and all of them are required to have
basic connectivity in the target.

This patch adds the checks for the rest of the stpes
needed to set up the tap interface.

[YOCTO #8550]

(From OE-Core rev: 52f6bacffc517198f0d1f24e5418ee4c9cb5442a)

Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Mariano Lopez 2015-10-22 13:39:20 +00:00 committed by Richard Purdie
parent b13c0be4b0
commit 835525c8bb
1 changed files with 15 additions and 0 deletions
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15
scripts/runqemu-ifup
View File

@ -91,10 +91,25 @@ fi
n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
$IFCONFIG addr add 192.168.7.$n/32 broadcast 192.168.7.255 dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to set up IP addressing on $TAP"
exit 1
fi
$IFCONFIG link set dev $TAP up
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to bring up $TAP"
exit 1
fi
dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
$IFCONFIG route add to 192.168.7.$dest dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to add route to 192.168.7.$dest using $TAP"
exit 1
fi
# setup NAT for tap0 interface to have internet access in QEMU
$IPTABLES -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32