新增网络socket的系统调用接口 (#247)

1.修复spinlock忘记恢复rflags的问题
2.WaitQueue增加wakeup_all的功能
3.完善tcp,udp,raw socket
4.把PollStatus结构体改为使用bitflags
5.新增iovec结构体
6.完成网络的系统调用
7.在bootstrap里面添加dnsmasq bridge-utils iptables

---------

Co-authored-by: guanjinquan <1666320330@qq.com>

tools/bootstrap.sh

@@ -43,7 +43,7 @@ install_ubuntu_debian_pkg()
         gnupg \
         lsb-release \
         llvm-dev libclang-dev clang gcc-multilib \
-        gcc build-essential fdisk dosfstools
+        gcc build-essential fdisk dosfstools dnsmasq bridge-utils iptables
 
     if [ -z "$(which docker)" ] && [ -n ${dockerInstall} ]; then
         echo "正在安装docker..."

tools/qemu/ifdown-nat

@@ -0,0 +1,24 @@
+#!/bin/bash
+BRIDGE=dragonos-bridge
+if [ -n "$1" ]; then
+        echo "正在断开接口 $1"
+        ip link set $1 down
+        brctl delif "$BRIDGE" $1
+        tap=`brctl show | grep natnet | awk '{print $4}'`
+        if [[ $tap != tap* ]];then
+            ip link set "$BRIDGE" down
+            brctl delbr "$BRIDGE"
+            iptables -t nat -F
+            kill `ps aux | grep dnsmasq | grep -v grep | awk '{print $2}'`
+            echo "断开接口 $1 成功"
+            echo "网桥 $BRIDGE 卸载成功"
+            echo "dnsmasq 服务停止成功"
+            exit 0
+        else
+            echo "断开接口 $1 成功"
+            exit 0
+        fi
+else
+        echo "删除错误：未指定接口"
+        exit 1
+fi

tools/qemu/ifup-nat

@@ -0,0 +1,85 @@
+#!/bin/bash
+# 设置 bridge 名称
+BRIDGE=dragonos-bridge
+# 设置网络信息
+NETWORK=192.168.137.0
+NETMASK=255.255.255.0
+GATEWAY=192.168.137.1
+DHCPRANGE=192.168.137.100,192.168.137.200
+# 启用PXE支持的可选参数
+TFTPROOT=
+BOOTP=
+
+function check_bridge()
+{
+        if brctl show | grep "^$BRIDGE" &> /dev/null; then
+                return 1
+        else
+                return 0
+        fi
+}
+
+function create_bridge()
+{
+        brctl addbr "$BRIDGE"
+        brctl stp "$BRIDGE" on
+        brctl setfd "$BRIDGE" 0
+        ifconfig "$BRIDGE" "$GATEWAY" netmask "$NETMASK" up
+}
+
+function enable_ip_forward()
+{
+        echo 1 > /proc/sys/net/ipv4/ip_forward
+}
+
+function add_filter_rules()
+{
+        iptables -t nat -A POSTROUTING -s "$NETWORK"/"$NETMASK" \
+                ! -d "$NETWORK"/"$NETMASK" -j MASQUERADE
+}
+
+function start_dnsmasq()
+{
+# 禁止重复运行dnsmasq
+        ps -ef | grep "dnsmasq" | grep -v "grep" &> /dev/null
+        if [ $? -eq 0 ]; then
+                echo "dnsmasq 已经在运行"
+                return 1
+        fi
+        dnsmasq \
+                --strict-order \
+                --except-interface=lo \
+                --interface=$BRIDGE \
+                --listen-address=$GATEWAY \
+                --bind-interfaces \
+                --dhcp-range=$DHCPRANGE \
+                --conf-file="" \
+                --pid-file=/var/run/qemu-dhcp-$BRIDGE.pid \
+                --dhcp-leasefile=/var/run/qemu-dhcp-$BRIDGE.leases \
+                --dhcp-no-override \
+                ${TFTPROOT:+"--enable-tftp"} \
+                ${TFTPROOT:+"--tftp-root=$TFTPROOT"} \
+                ${BOOTP:+"--dhcp-boot=$BOOTP"}
+}
+
+function setup_bridge_nat()
+{
+        check_bridge "$BRIDGE"
+        if [ $? -eq 0 ]; then
+                create_bridge
+        fi
+        enable_ip_forward
+        add_filter_rules "$BRIDGE"
+        start_dnsmasq "$BRIDGE"
+}
+
+# 安装前需要检查$1参数
+if [ -n "$1" ]; then
+        setup_bridge_nat
+        brctl addif "$BRIDGE" "$1"
+        ifconfig "$1" 0.0.0.0 up
+        exit 0
+else
+        echo "发现错误：没有指定接口"
+        exit 1
+fi

tools/run-qemu.sh

@@ -1,9 +1,40 @@
+check_dependencies()
+{
+    # Check if qemu is installed
+    if [ -z "$(which qemu-system-x86_64)" ]; then
+        echo "Please install qemu first!"
+        exit 1
+    fi
+
+    # Check if brctl is installed
+    if [ -z "$(which brctl)" ]; then
+        echo "Please install bridge-utils first!"
+        exit 1
+    fi
+
+    # Check if dnsmasq is installed
+    if [ -z "$(which dnsmasq)" ]; then
+        echo "Please install dnsmasq first!"
+        exit 1
+    fi
+
+    # Check if iptable is installed
+    if [ -z "$(which iptables)" ]; then
+        echo "Please install iptables first!"
+        exit 1
+    fi
+
+}
+
+check_dependencies
+
 # 进行启动前检查
 flag_can_run=1
 ARGS=`getopt -o p -l bios:,display: -- "$@"`
 eval set -- "${ARGS}"
 echo "$@"
-allflags=$(qemu-system-x86_64 -cpu help | awk '/flags/ {y=1; getline}; y {print}' | tr ' ' '\n' | grep -Ev "^$" | sed -r 's|^|+|' | tr '\n' ',' | sed -r "s|,$||")
+allflags= 
+# allflags=$(qemu-system-x86_64 -cpu help | awk '/flags/ {y=1; getline}; y {print}' | tr ' ' '\n' | grep -Ev "^$" | sed -r 's|^|+|' | tr '\n' ',' | sed -r "s|,$||")
 ARCH="x86_64"
 #ARCH="i386"
 # 请根据自己的需要，在-d 后方加入所需的 trace 事件
@@ -17,7 +48,6 @@ if [ $(uname) == Darwin ]; then
     qemu_accel=hvf
 fi
 
-
 QEMU=qemu-system-x86_64
 QEMU_DISK_IMAGE="../bin/disk.img"
 QEMU_MEMORY="512M"
@@ -29,7 +59,10 @@ QEMU_RTC_CLOCK="clock=host,base=localtime"
 QEMU_SERIAL="file:../serial_opt.txt"
 QEMU_DRIVE="id=disk,file=${QEMU_DISK_IMAGE},if=none"
 
-QEMU_DEVICES="-device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0 -nic user,model=virtio-net-pci  -usb -device qemu-xhci,id=xhci,p2=8,p3=4 -machine accel=${qemu_accel} -machine q35"
+
+# ps: 下面这条使用tap的方式，无法dhcp获取到ip，暂时不知道为什么
+# QEMU_DEVICES="-device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0 -net nic,netdev=nic0 -netdev tap,id=nic0,model=virtio-net-pci,script=qemu/ifup-nat,downscript=qemu/ifdown-nat -usb -device qemu-xhci,id=xhci,p2=8,p3=4 -machine accel=${qemu_accel} -machine q35 "
+QEMU_DEVICES="-device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0 -nic user,model=virtio-net-pci,hostfwd=tcp::12580-:12580 -usb -device qemu-xhci,id=xhci,p2=8,p3=4 -machine accel=${qemu_accel} -machine q35 "
 
 QEMU_ARGUMENT="-d ${QEMU_DISK_IMAGE} -m ${QEMU_MEMORY} -smp ${QEMU_SMP} -boot order=d -monitor ${QEMU_MONITOR} -d ${qemu_trace_std} "