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fix: Do not set MTU size for legacy Windows versions (#190)

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Kroese 2025-03-04 15:38:28 +01:00 committed by GitHub
parent 3ea684141d
commit 65cea83713
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GPG key ID: B5690EEEBB952194
1 changed files with 30 additions and 6 deletions
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36
src/network.sh
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@ -59,8 +59,10 @@ configureDHCP() {
fi ;; fi ;;
esac esac
if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
warn "Failed to set MTU size.." if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then
warn "Failed to set MTU size.."
fi
fi fi
while ! ip link set "$VM_NET_TAP" up; do while ! ip link set "$VM_NET_TAP" up; do
@ -226,8 +228,10 @@ configureNAT() {
error "$tuntap" && return 1 error "$tuntap" && return 1
fi fi
if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
warn "Failed to set MTU size.." if ! ip link set dev "$VM_NET_TAP" mtu "$MTU"; then
warn "Failed to set MTU size.."
fi
fi fi
GATEWAY_MAC=$(echo "$VM_NET_MAC" | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/') GATEWAY_MAC=$(echo "$VM_NET_MAC" | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/')
@ -361,6 +365,22 @@ getInfo() {
MTU=$(cat "/sys/class/net/$VM_NET_DEV/mtu") MTU=$(cat "/sys/class/net/$VM_NET_DEV/mtu")
fi fi
if [ "$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 $ADAPTER adapters!" && MTU="0"
fi
fi
if [[ "${BOOT_MODE:-}" == "windows_legacy" ]]; then
if [[ "$MTU" != "0" ]] && [[ "$MTU" != "1500" ]]; then
warn "MTU size is $MTU, but cannot be set for legacy Windows versions!" && MTU="0"
fi
fi
if [ -z "$MAC" ]; then if [ -z "$MAC" ]; then
local file="$STORAGE/$PROCESS.mac" local file="$STORAGE/$PROCESS.mac"
[ -s "$file" ] && MAC=$(<"$file") [ -s "$file" ] && MAC=$(<"$file")
@ -402,7 +422,10 @@ getInfo
html "Initializing network..." html "Initializing network..."
if [[ "$DEBUG" == [Yy1]* ]]; then 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 [ -f /etc/resolv.conf ] && grep '^nameserver*' /etc/resolv.conf
echo echo
fi fi
@ -456,7 +479,8 @@ else
fi 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"
html "Initialized network successfully..." html "Initialized network successfully..."
return 0 return 0