mibuild/sim: able to visualize arp requests with wireshark
now need to find why that is not responding...
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a64acdfa65
commit
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@ -6,6 +6,9 @@ import os
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import pty
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import time
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import threading
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import subprocess
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import struct
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import fcntl
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messages= {
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"EXIT": 0,
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@ -30,6 +33,14 @@ class VerilatorServer:
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self.serial = master
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self.serial_name = os.ttyname(slave)
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os.system("openvpn --mktun --dev tap0")
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os.system("ip link set tap0 up")
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os.system("ip addr add 192.169.0.14/24 dev tap0")
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os.system("iface tap0 inet")
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os.system("mknod /dev/net/tap c 10 200")
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os.system("chmod 600 /dev/net/tap")
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self.ack = False
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self._print_banner()
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@ -67,6 +78,8 @@ class VerilatorServer:
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if hasattr(self, "socket"):
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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os.system("openvpn --rmtun --dev tap0")
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os.system("rm -f /dev/net/tap")
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self._cleanup_file()
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# XXX proof of concept
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@ -74,6 +87,10 @@ server = VerilatorServer()
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server.accept()
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print("Connection accepted")
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TUNSETIFF = 0x400454ca
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IFF_TAP = 0x0002
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IFF_NO_PI = 0x1000
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def read():
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while True:
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packet = server.recv()
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@ -82,10 +99,10 @@ def read():
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c = bytes(chr(packet[1]).encode('utf-8'))
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os.write(server.serial, c)
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elif packet[0] == messages["ETHERNET"]:
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print("received ethernet")
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for d in packet[1:]:
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print("{:02X}".format(d), end="")
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print("")
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tap = os.open("/dev/net/tun", os.O_RDWR)
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fcntl.ioctl(tap, TUNSETIFF, struct.pack("16sH", b"tap0", IFF_TAP | IFF_NO_PI))
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os.write(tap, packet[1+8:-4])
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os.close(tap)
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elif packet[0] == messages["ACK"]:
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server.ack = True
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@ -104,5 +121,9 @@ readthread.start()
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writethread = threading.Thread(target=write, daemon=True)
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writethread.start()
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while True:
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try:
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while True:
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time.sleep(1)
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except KeyboardInterrupt:
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server.close()
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@ -153,6 +153,7 @@ int console_service(struct sim *s)
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return 0;
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}
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#ifdef ETH_SOURCE_STB
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int eth_last_source_stb = 0;
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int ethernet_service(struct sim *s) {
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@ -171,6 +172,7 @@ int ethernet_service(struct sim *s) {
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}
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eth_last_source_stb = ETH_SOURCE_STB;
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}
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#endif
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void sim_tick(struct sim *s)
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{
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@ -219,7 +221,9 @@ int main(int argc, char **argv, char **env)
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if (SYS_CLK) {
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if (console_service(&s) != 0)
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s.run = false;
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#ifdef ETH_SOURCE_STB
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ethernet_service(&s);
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#endif
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}
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}
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s.end = clock();
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