Unverified Commit a1e99365 authored by Kroese's avatar Kroese Committed by GitHub
Browse files

fix: Set MTU value (#911)

parent 3675a501

src/network.sh

+24 −6
Original line number Diff line number Diff line
@@ -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