48 lines
1.7 KiB
Bash
Executable File
48 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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[ "$VERBOSITY" = 1 ] && set -x
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[ "$ADDRFAM" = meta ] && exit 0
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sysfs()
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{
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# Called with :
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# $1 = basename of the file in bonding/ to write to.
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# $2 = value to write. Won't write if $2 is empty.
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if [ "$2" ] ; then
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echo "$2" > "/sys/class/net/$IFACE/master/bonding/$1"
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return $?
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fi
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return 0
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}
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# If the stanza bond-give-a-chance is set for a slave interface,
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# then force $IFACE to be the primary for some time, then restore the primary to its previous value.
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# This stanza is designed to workaround a bug in wpa_supplicant, when used with bonding :
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# wpa_supplicant expects wifi authentication packets on the bond interface, but also sends wifi authentication packets on the bond interface.
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# If the active interface is not the wifi interface at the time wpa_supplicant tries to authenticate, the wifi AP won't receive anything, causing the authentication to fail.
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# In order for the wifi authentication to succeed, one needs to give a chance to the wifi interface to send authentication packets.
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# "bond-give-a-chance 10" will set the wifi interface as the primary interface for 10 seconds, then restore the previous primary interface.
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# This is supposed to be enough to give a chance to wifi to authenticate properly.
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if [ "$IF_BOND_GIVE_A_CHANCE" ] ; then
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read primary < "/sys/class/net/$IFACE/master/bonding/primary"
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# Set the temporary primary.
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sysfs primary "$IFACE"
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# Wait for the link to be setup, but not longer that $IF_BOND_GIVE_A_CHANGE seconds.
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while [ "$IF_BOND_GIVE_A_CHANCE" -gt 0 ] ; do
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if ip link show $IFACE | grep -sq 'state UP'; then
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break
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fi
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sleep 1
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IF_BOND_GIVE_A_CHANCE=`expr $IF_BOND_GIVE_A_CHANCE - 1`
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done
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# Restore the previous primary.
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sysfs primary "$primary"
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fi
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