mirror of
https://github.com/vincentmli/bpfire.git
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552fb4b8b5
some nic's loose the carrier after setting new mtu. Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
32 lines
812 B
Plaintext
32 lines
812 B
Plaintext
# Configure the MTU for the interface
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eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
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set_mtu()
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{
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local mtu=$1
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ip link set "$interface" mtu "$mtu"
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# test for buggy nic that lose link at mtu set...
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carrier=`cat /sys/class/net/$interface/carrier`
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if [ "$carrier" == "0" ]; then
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syslog info "Warning! Carrier loss after MTU set. Reinit ..."
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ip link set "$interface" down
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ip link set "$interface" up
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fi
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}
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if [ -n "$new_interface_mtu" ] && $if_up; then
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if [ $RED_DHCP_FORCE_MTU -ge 576 ]; then
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new_interface_mtu=$RED_DHCP_FORCE_MTU
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fi
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if [ ! "$new_interface_mtu" == "$ifmtu" ]; then
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# The smalled MTU dhcpcd can work with is 576
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if [ "$new_interface_mtu" -gt 576 ]; then
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if set_mtu "$new_interface_mtu"; then
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syslog info "MTU set to $new_interface_mtu"
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fi
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fi
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fi
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fi
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