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fix: Set MTU value (#911)
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Kroese 2025-03-04 15:37:37 +01:00 committed by GitHub
parent 3675a50129
commit a1e9936572
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1 changed files with 24 additions and 6 deletions
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22
src/network.sh
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@ -59,9 +59,11 @@ configureDHCP() {
fi ;;
esac
if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then
warn "Failed to set MTU size.."
fi
fi
while ! ip link set "$VM_NET_TAP" up; do
info "Waiting for MAC address $VM_NET_MAC to become available..."
@ -218,9 +220,11 @@ configureNAT() {
error "$tuntap" && return 1
fi
if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then
warn "Failed to set MTU size.."
fi
fi
GATEWAY_MAC=$(echo "$VM_NET_MAC" | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/')
@ -357,6 +361,16 @@ getInfo() {
MTU=$(cat "/sys/class/net/$VM_NET_DEV/mtu")
fi
if [ "$MTU" -gt "1500" ]; then
info "MTU size is too large: $MTU, ignoring..." && MTU="0"
fi
if [[ "${ADAPTER,,}" != "virtio-net-pci" ]]; then
if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
warn "MTU size is $MTU, but cannot be set for $ADAPTER adapters!" && MTU="0"
fi
fi
if [ -z "$VM_NET_MAC" ]; then
local file="$STORAGE/dsm.mac"
[ -s "$file" ] && VM_NET_MAC=$(<"$file")
@ -399,7 +413,10 @@ getInfo
html "Initializing network..."
if [[ "$DEBUG" == [Yy1]* ]]; then
info "Host: $HOST IP: $IP Gateway: $GATEWAY Interface: $VM_NET_DEV MAC: $VM_NET_MAC MTU: $MTU"
mtu=$(cat "/sys/class/net/$VM_NET_DEV/mtu")
line="Host: $HOST IP: $IP Gateway: $GATEWAY Interface: $VM_NET_DEV MAC: $VM_NET_MAC MTU: $mtu"
[[ "$MTU" != "0" ]] && [[ "$MTU" != "$mtu" ]] && line+=" ($MTU)"
info "$line"
[ -f /etc/resolv.conf ] && grep '^nameserver*' /etc/resolv.conf
echo
fi
@ -464,6 +481,7 @@ else
fi
NET_OPTS+=" -device $ADAPTER,romfile=,netdev=hostnet0,mac=$VM_NET_MAC,host_mtu=$MTU,id=net0"
NET_OPTS+=" -device $ADAPTER,id=net0,netdev=hostnet0,romfile=,mac=$VM_NET_MAC"
[[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]] && NET_OPTS+=",host_mtu=$MTU"
return 0