scripts/qemustart: Allow usage without networking

For basic tests it's not necessary to have the networking setup and this
allows testing as a normal user as well, without root privileges.

So this patch adds `--no-network` long option or `-n` short option,
which allows starting QEMU without network.

Cc: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>

diff --git a/scripts/qemustart b/scripts/qemustart
index b68e8bb0110588f1ce998cce6330a1a2ecd40a7c..3b479860e9c5e9ecbf9a30ee25f5198055191fca 100755 (executable)
--- a/scripts/qemustart
+++ b/scripts/qemustart
@@ -74,6 +74,7 @@ check_setup_() {
 }
 
 check_setup() {
+       [ -z $o_nonetwork ] || return 0
        check_setup_ || {
                __errmsg "please check the script content to see the environment requirement"
                return 1
@@ -122,6 +123,7 @@ parse_args() {
        o_qemu_extra=()
        while [ "$#" -gt 0 ]; do
                case "$1" in
+                       --no-network|-n) o_nonetwork=1; shift ;;
                        --kernel) o_kernel="$2"; shift 2 ;;
                        --rootfs) o_rootfs="$2"; shift 2 ;;
                        --machine|-machine|-M) o_mach="$2"; shift 2 ;;
@@ -185,9 +187,16 @@ start_qemu_armvirt() {
                )
        }
 
+       [ -n $o_nonetwork ] || {
+               o_qemu_extra+=( \
+                       "-netdev" "bridge,id=lan,br=$BR_LAN,helper=$HELPER" \
+                           "-device" "virtio-net-pci,id=devlan,netdev=lan,mac=$MAC_LAN" \
+                       "-netdev" "bridge,id=wan,br=$BR_WAN,helper=$HELPER" "-device" \
+                           "virtio-net-pci,id=devwan,netdev=wan,mac=$MAC_WAN" \
+               )
+       }
+
        "$qemu_exe" -machine "$mach" -cpu "$cpu" -nographic \
-               -netdev bridge,id=lan,br="$BR_LAN,helper=$HELPER" -device virtio-net-pci,id=devlan,netdev=lan,mac="$MAC_LAN" \
-               -netdev bridge,id=wan,br="$BR_WAN,helper=$HELPER" -device virtio-net-pci,id=devwan,netdev=wan,mac="$MAC_WAN" \
                -kernel "$kernel" \
                "${o_qemu_extra[@]}"
 }
@@ -209,9 +218,16 @@ start_qemu_malta() {
        # NOTE: order of wan, lan -device arguments matters as it will affect which
        # one will be actually used as the wan, lan network interface inside the
        # guest machine
+       [ -n $o_nonetwork ] || {
+               o_qemu_extra+=( \
+                       "-netdev" "bridge,id=wan,br=$BR_WAN,helper=$HELPER" "-device" \
+                           "virtio-net-pci,id=devwan,netdev=wan,mac=$MAC_WAN" \
+                       "-netdev" "bridge,id=lan,br=$BR_LAN,helper=$HELPER" \
+                           "-device" "virtio-net-pci,id=devlan,netdev=lan,mac=$MAC_LAN" \
+               )
+       }
+
        "$qemu_exe" -machine "$mach" -nographic \
-               -netdev bridge,id=wan,br="$BR_WAN,helper=$HELPER" -device pcnet,netdev=wan,mac="$MAC_WAN" \
-               -netdev bridge,id=lan,br="$BR_LAN,helper=$HELPER" -device pcnet,netdev=lan,mac="$MAC_LAN" \
                -kernel "$kernel" \
                "${o_qemu_extra[@]}"
 }
@@ -241,6 +257,15 @@ start_qemu_x86() {
                        ;;
        esac
 
+       [ -n $o_nonetwork ] || {
+               o_qemu_extra+=( \
+                       "-netdev" "bridge,id=lan,br=$BR_LAN,helper=$HELPER" \
+                           "-device" "virtio-net-pci,id=devlan,netdev=lan,mac=$MAC_LAN" \
+                       "-netdev" "bridge,id=wan,br=$BR_WAN,helper=$HELPER" "-device" \
+                           "virtio-net-pci,id=devwan,netdev=wan,mac=$MAC_WAN" \
+               )
+       }
+
        case "${o_subtarget%-*}" in
                legacy)
                        # use IDE (PATA) disk instead of AHCI (SATA).  Refer to link
@@ -254,16 +279,12 @@ start_qemu_x86() {
                        #
                        # [1] https://dev.openwrt.org/ticket/17947
                        "$qemu_exe" -machine "$mach" -nographic \
-                               -netdev bridge,id=lan,br="$BR_LAN,helper=$HELPER" -device e1000,id=devlan,netdev=lan,mac="$MAC_LAN" \
-                               -netdev bridge,id=wan,br="$BR_WAN,helper=$HELPER" -device e1000,id=devwan,netdev=wan,mac="$MAC_WAN" \
                                -device ide-drive,drive=drv0 \
                                -drive "file=$rootfs,format=raw,id=drv0,if=none" \
                                "${o_qemu_extra[@]}"
                        ;;
                generic|64)
                        "$qemu_exe" -machine "$mach" -nographic \
-                               -netdev bridge,id=lan,br="$BR_LAN,helper=$HELPER" -device virtio-net-pci,id=devlan,netdev=lan,mac="$MAC_LAN" \
-                               -netdev bridge,id=wan,br="$BR_WAN,helper=$HELPER" -device virtio-net-pci,id=devwan,netdev=wan,mac="$MAC_WAN" \
                                -drive "file=$rootfs,format=raw,if=virtio" \
                                "${o_qemu_extra[@]}"
                        ;;
@@ -282,6 +303,6 @@ start_qemu() {
        esac
 }
 
-check_setup \
-       && parse_args "$@" \
+parse_args "$@" \
+       && check_setup \
        && start_qemu