优化脚本

app/src/main/assets/eth.sh

@@ -1,46 +1,131 @@
 #!/system/bin/sh
 
-while [ $WAITED -lt $MAX_WAIT ]; do
+# ==============================================
+# Configuration parameters - modify as needed
+# ==============================================
+ETH_IP="192.168.68.91"            # Ethernet IP address
+ETH_NETMASK="24"                  # Subnet mask (CIDR format)
+ETH_NETWORK="192.168.68.0"        # Network address
+ETH_BROADCAST="192.168.68.255"    # Broadcast address
+ETH_GATEWAY="192.168.68.1"        # Default gateway
+ROUTE_TABLE="20"                  # Routing table number
+MAX_INIT_WAIT=150                 # Maximum seconds to wait for ethernet interface
+MAX_UP_WAIT=10                    # Maximum seconds to wait for interface to come UP
+MAX_ROUTE_WAIT=5                  # Maximum seconds to wait for routing rules
+
+# For debugging only - comment out in production
+# set -x
+
+# Record script start time
+SCRIPT_START=$(date +%s)
+
+# Cleanup function - handles unexpected interruptions
+cleanup() {
+  echo "Script interrupted, cleaning up..." >&2
+  # Add additional cleanup code here if needed
+  exit 1
+}
+trap cleanup INT TERM
+
+# Only configure rp_filter for eth0 interface
+echo 0 > /proc/sys/net/ipv4/conf/eth0/rp_filter 2>/dev/null || true
+
+# Wait for eth0 interface to appear
+WAITED=0
+while [ $WAITED -lt $MAX_INIT_WAIT ]; do
   if [ -d "/sys/class/net/eth0" ]; then
-    echo "eth0 found"
+    echo "eth0 found after $WAITED seconds"
     break
   fi
-  echo "Wait eth0... ($WAITED/$MAX_WAIT)"
-  sleep 1
+  echo "Wait eth0... ($WAITED/$MAX_INIT_WAIT)"
+  sleep 0.1
   WAITED=$((WAITED+1))
 done
 
-# 检查eth0是否存在
+# Check if eth0 exists
 if ! [ -d "/sys/class/net/eth0" ]; then
-  echo "Error: eth0 not exists"
+  echo "Error: eth0 not exists" >&2
   exit 1
 fi
 
+# Check physical connection status
+if [ -f "/sys/class/net/eth0/carrier" ]; then
+  CARRIER=$(cat /sys/class/net/eth0/carrier)
+  echo "Physical connection status: $CARRIER (1=connected, 0=disconnected)"
+  if [ "$CARRIER" != "1" ]; then
+    echo "Warning: Ethernet physical connection may have issues, please check the cable" >&2
+  fi
+fi
+
+# Clear previous configuration
 /system/bin/ip link set eth0 down
-/system/bin/ip addr flush dev eth0
-/system/bin/ip addr add 192.168.68.91/24 broadcast 192.168.68.255 dev eth0
+/system/bin/ip addr flush dev eth0 
+/system/bin/ip route flush dev eth0
+/system/bin/ip route flush table $ROUTE_TABLE
+/system/bin/ip rule del to $ETH_NETWORK/$ETH_NETMASK 2>/dev/null || true
+
+# Configure IP address
+/system/bin/ip addr add $ETH_IP/$ETH_NETMASK broadcast $ETH_BROADCAST dev eth0
+
+# Enable interface and wait for UP
 /system/bin/ip link set eth0 up
-/system/bin/sleep 1
-/system/bin/ip route delete 192.168.68.0/24 table 20
-/system/bin/ip route add 192.168.68.0/24 dev eth0 proto static scope link table 20
+
+# Use loop to wait for interface UP instead of fixed sleep
+WAITED=0
+while [ $WAITED -lt $MAX_UP_WAIT ]; do
+  IF_STATUS=$(/system/bin/ip link show eth0 | grep -c "state UP")
+  if [ "$IF_STATUS" = "1" ]; then
+    echo "Interface is UP after $WAITED seconds"
+    break
+  fi
+  echo "Waiting for interface UP... ($WAITED/$MAX_UP_WAIT)"
+  sleep 0.5
+  WAITED=$((WAITED+1))
+done
+
+if [ "$IF_STATUS" != "1" ]; then
+  echo "Warning: Interface did not come UP within expected time, attempting to enable again" >&2
+  /system/bin/ip link set eth0 up
+  sleep 1
+fi
+
+# First add to main routing table
+/system/bin/ip route add $ETH_NETWORK/$ETH_NETMASK dev eth0 proto static scope link
+
+# Then add to specified routing table
+/system/bin/ip route add $ETH_NETWORK/$ETH_NETMASK dev eth0 proto static scope link table $ROUTE_TABLE
 ADD_ROUTE_STATUS=$?
 
 if [ $ADD_ROUTE_STATUS -eq 0 ]; then
-  echo "路由添加命令成功执行"
+  echo "Add route successfully"
 else
-  echo "路由添加命令失败，状态码: $ADD_ROUTE_STATUS"
-  exit $ADD_ROUTE_STATUS
+  echo "Failed to add route: $ADD_ROUTE_STATUS" >&2
 fi
 
-/system/bin/ip route flush cache
-/system/bin/ip rule del to 192.168.68.0/24
-/system/bin/ip rule add from all to 192.168.68.0/24 lookup 20 prio 1000
-/system/bin/ip route flush cache
+# Only clear ARP and neighbor cache for eth0
+/system/bin/ip neigh flush dev eth0
 
-if /system/bin/ip rule | grep -q "192.168.68.0/24"; then
-  echo "路由配置成功"
-  exit 0
-else
-  echo "路由配置失败"
-  exit 1
-fi
+# Add routing rules - only flush cache once after rule is added
+/system/bin/ip rule add from all to $ETH_NETWORK/$ETH_NETMASK lookup $ROUTE_TABLE prio 1000
+/system/bin/ip route flush cache dev eth0
+
+# Only enable forwarding for eth0 interface
+echo 1 > /proc/sys/net/ipv4/conf/eth0/forwarding 2>/dev/null || true
+
+# Wait for routing rules to take effect - using loop check instead of fixed wait
+WAITED=0
+while [ $WAITED -lt $MAX_ROUTE_WAIT ]; do
+  if /system/bin/ip rule | grep -q "$ETH_NETWORK/$ETH_NETMASK"; then
+    echo "Routing rules are now effective after $WAITED seconds"
+    break
+  fi
+  echo "Waiting for routing rules to take effect... ($WAITED/$MAX_ROUTE_WAIT)"
+  sleep 0.5
+  WAITED=$((WAITED+1))
+done
+
+# Display execution time
+SCRIPT_END=$(date +%s)
+TOTAL_TIME=$((SCRIPT_END - SCRIPT_START))
+echo "Total script execution time: $TOTAL_TIME seconds"
+exit 0