Thanks to Xiang and Greg, I got Internet networking running in the simulator.
Xiang, your configuration as you sent it didn't work for me, but using it as a base with some modifications, I got the simulator to compile. Then with some debugging and using your simbridge script, I was able to get the simulator's network working. I had some problems with /dev/net/tun file permissions and capabilities– apparently on Ubuntu (and maybe other recent Linuxes?) to access /dev/net/tun as a regular user, the program has to have the cap_net_admin capability. This is detailed in the Linux TUN/TAP Readme <https://github.com/torvalds/linux/blob/master/Documentation/networking/tuntap.txt>. I was able to get the nuttx simulator working as root. Then I got it running as a regular user by doing this: sudo chmod 0666 /dev/net/tun > sudo setcap cap_net_admin+ep ./nuttx > I can execute the tcpecho command, so now I can use it as a comparison to the SAMA5D36-Xplained board while debugging the GMAC. I'm not using the simbridge.sh script, I wrote a different one based on it, and instead of bridging I use local routes and iptables to let the nuttx box access the Internet. (The simbridge.sh script caused some problems with how I accessed my VMWare linux installation.) I will write a more full guide to getting everything set up in the next few days. Thank you both for your help! cheers adam On Mon, Feb 10, 2020 at 10:44 PM Adam Feuer <a...@starcat.io> wrote: > Xiang, > > Thank you! It's late here in Seattle WA USA; I'll try it tomorrow! > > cheers > adam > > On Mon, Feb 10, 2020 at 10:40 PM Xiang Xiao <xiaoxiang781...@gmail.com> > wrote: > >> MAC is assigned through: >> tapdev_init->set_macaddr->netdriver_setmacaddr >> >> netinit task is responsible for the networking initialization, so it >> is a good indicator that the iniitaliation finish succesfully if ps >> doesn't list it any more. >> >> Here is my config: >> # >> # This file is autogenerated: PLEASE DO NOT EDIT IT. >> # >> # You can use "make menuconfig" to make any modifications to the >> installed .config file. >> # You can then do "make savedefconfig" to generate a new defconfig >> file that includes your >> # modifications. >> # >> CONFIG_ARCH="sim" >> CONFIG_ARCH_BOARD="sim" >> CONFIG_ARCH_BOARD_SIM=y >> CONFIG_ARCH_CHIP="sim" >> CONFIG_ARCH_SIM=y >> CONFIG_BOARDCTL_POWEROFF=y >> CONFIG_BUILTIN=y >> CONFIG_CLOCK_MONOTONIC=y >> CONFIG_DEBUG_ASSERTIONS=y >> CONFIG_DEBUG_ERROR=y >> CONFIG_DEBUG_FEATURES=y >> CONFIG_DEBUG_INFO=y >> CONFIG_DEBUG_SYMBOLS=y >> CONFIG_DEBUG_WARN=y >> CONFIG_DEV_LOOP=y >> CONFIG_DEV_ZERO=y >> CONFIG_DRIVERS_VIDEO=y >> CONFIG_ELF=y >> CONFIG_EXAMPLES_FTPC=y >> CONFIG_EXECFUNCS_HAVE_SYMTAB=y >> CONFIG_FS_BINFS=y >> CONFIG_FS_HOSTFS=y >> CONFIG_FS_LITTLEFS=y >> CONFIG_FS_PROCFS=y >> CONFIG_FS_TMPFS=y >> CONFIG_IDLETHREAD_STACKSIZE=2048 >> CONFIG_INPUT=y >> CONFIG_IOB_NOTIFIER=y >> CONFIG_LIBC_EXECFUNCS=y >> CONFIG_LIBC_IOCTL_VARIADIC=y >> CONFIG_LIBC_LOCALE=y >> CONFIG_LIBC_LOCALTIME=y >> CONFIG_LIBM=y >> CONFIG_MTD=y >> CONFIG_NET=y >> CONFIG_NETDB_DNSCLIENT=y >> CONFIG_NETDB_DNSCLIENT_MAXRESPONSE=176 >> CONFIG_NETDB_DNSCLIENT_RECV_TIMEOUT=3 >> CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x771d1d1d >> CONFIG_NETDEVICES=y >> CONFIG_NETDEV_STATISTICS=y >> CONFIG_NETINIT_DHCPC=y >> CONFIG_NETINIT_THREAD=y >> CONFIG_NETUTILS_DHCPC=y >> CONFIG_NETUTILS_FTPC=y >> CONFIG_NETUTILS_TELNETD=y >> CONFIG_NETUTILS_TFTPC=y >> CONFIG_NETUTILS_WEBCLIENT=y >> CONFIG_NET_ARP_SEND=y >> CONFIG_NET_BROADCAST=y >> CONFIG_NET_ICMP=y >> CONFIG_NET_ICMP_SOCKET=y >> CONFIG_NET_ICMPv6=y >> CONFIG_NET_ICMPv6_AUTOCONF=y >> CONFIG_NET_ICMPv6_NEIGHBOR=y >> CONFIG_NET_ICMPv6_SOCKET=y >> CONFIG_NET_IPv6=y >> CONFIG_NET_LOOPBACK=y >> CONFIG_NET_SENDFILE=y >> CONFIG_NET_SLIP=y >> CONFIG_NET_SOLINGER=y >> CONFIG_NET_STATISTICS=y >> CONFIG_NET_TCP=y >> CONFIG_NET_TCPBACKLOG=y >> CONFIG_NET_TCP_WRITE_BUFFERS=y >> CONFIG_NET_UDP=y >> CONFIG_NET_UDP_BINDTODEVICE=y >> CONFIG_NET_UDP_WRITE_BUFFERS=y >> CONFIG_NSH_ARCHINIT=y >> CONFIG_NSH_BUILTIN_APPS=y >> CONFIG_NSH_FILE_APPS=y >> CONFIG_NSH_READLINE=y >> CONFIG_NSH_TELNETD_CLIENTSTACKSIZE=4096 >> CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=2048 >> CONFIG_PSEUDOFS_SOFTLINKS=y >> CONFIG_PSEUDOTERM=y >> CONFIG_PSEUDOTERM_BSD=y >> CONFIG_PTHREAD_CLEANUP=y >> CONFIG_PTHREAD_CLEANUP_STACKSIZE=2 >> CONFIG_PTHREAD_MUTEX_TYPES=y >> CONFIG_PTHREAD_STACK_DEFAULT=8192 >> CONFIG_RAMMTD=y >> CONFIG_READLINE_CMD_HISTORY=y >> CONFIG_READLINE_TABCOMPLETION=y >> CONFIG_SCHED_CHILD_STATUS=y >> CONFIG_SCHED_HAVE_PARENT=y >> CONFIG_SCHED_HPWORK=y >> CONFIG_SCHED_ONEXIT=y >> CONFIG_SERIAL_TERMIOS=y >> CONFIG_SIG_DEFAULT=y >> CONFIG_SIG_EVTHREAD=y >> CONFIG_SIM_M32=y >> CONFIG_SIM_NET_BRIDGE=y >> CONFIG_STACK_COLORATION=y >> CONFIG_SYSLOG_BUFFER=y >> CONFIG_SYSLOG_CHARDEV=y >> CONFIG_SYSLOG_TIMESTAMP=y >> CONFIG_SYSTEM_CLE=y >> CONFIG_SYSTEM_NSH=y >> CONFIG_SYSTEM_NSH_STACKSIZE=4096 >> CONFIG_SYSTEM_NTPC=y >> CONFIG_SYSTEM_PING6=y >> CONFIG_SYSTEM_PING6_STACKSIZE=4096 >> CONFIG_SYSTEM_PING=y >> CONFIG_SYSTEM_PING_STACKSIZE=4096 >> CONFIG_SYSTEM_SYSTEM=y >> CONFIG_SYSTEM_TELNET_CLIENT=y >> CONFIG_SYSTEM_TELNET_CLIENT_STACKSIZE=4096 >> CONFIG_SYSTEM_TIME64=y >> CONFIG_TELNET_CHARACTER_MODE=y >> CONFIG_TTY_SIGINT=y >> CONFIG_TTY_SIGSTP=y >> CONFIG_USERMAIN_STACKSIZE=4096 >> CONFIG_USER_ENTRYPOINT="nsh_main" >> >> On Tue, Feb 11, 2020 at 2:18 PM Adam Feuer <a...@starcat.io> wrote: >> > >> > Xiang, >> > >> > Looks like attachments aren't making it through for some reason. Would >> you >> > be willing to just paste the config into an email message? >> > >> > BTW my ethernet interface isn't getting a MAC address... it's all 0's. >> Your >> > virtual ethernet has one. So something is wrong with the netinit for my >> > interface. >> > >> > cheers >> > adam >> > >> > On Mon, Feb 10, 2020 at 10:03 PM Xiang Xiao <xiaoxiang781...@gmail.com> >> > wrote: >> > >> > > It's my full config, but to avoid the LittleVGL downloading, I remove >> > > some graphic related config. >> > > Here is my output with the latest mainline: >> > > xiaoxiang@xiaoxiang-VirtualBox:~/nuttx/nuttx$ sudo ./nuttx >> > > >> > > NuttShell (NSH) NuttX-8.2 >> > > nsh> ps >> > > PID GROUP PRI POLICY TYPE NPX STATE EVENT SIGMASK >> > > STACK USED FILLED COMMAND >> > > 0 0 0 FIFO Kthread N-- Ready 00000000 >> > > 000000 000000 0.0% Idle Task >> > > 1 1 224 FIFO Kthread --- Waiting Signal 00000000 >> > > 002032 000460 22.6% hpwork >> > > 2 1 100 FIFO Kthread --- Waiting Signal 00000000 >> > > 002032 000924 45.4% lpwork >> > > 3 1 100 FIFO Task --- Running 00000000 >> > > 004080 002096 51.3% init >> > > 5 4 100 FIFO Task --- Waiting Semaphore 00000010 >> > > 002000 000804 40.2% Telnet daemon 0x56623690 >> > > 6 4 100 FIFO Task --- Waiting Semaphore 00000010 >> > > 002000 000804 40.2% Telnet daemon 0x56624510 >> > > 7 4 100 FIFO Task --- Waiting Semaphore 00000000 >> > > 002016 001828 90.6%! NTP daemon >> > > nsh> ifconfig >> > > eth0 Link encap:Ethernet HWaddr 42:09:36:15:9c:19 at UP >> > > inet addr:10.0.2.18 DRaddr:10.0.2.2 Mask:255.255.255.0 >> > > inet6 addr: fe80::4009:36ff:fe15:9c19/64 >> > > inet6 DRaddr: ::/64 >> > > >> > > RX: Received Fragment Errors >> > > 00000014 00000000 00000000 >> > > IPv4 IPv6 ARP Dropped >> > > 00000003 00000010 00000001 00000000 >> > > TX: Queued Sent Errors Timeouts >> > > 00000012 00000012 00000000 00000000 >> > > Total Errors: 00000000 >> > > >> > > lo Link encap:Local Loopback at UP >> > > inet addr:127.0.0.1 DRaddr:127.0.0.1 Mask:255.0.0.0 >> > > inet6 addr: ::1/128 >> > > inet6 DRaddr: ::1/128 >> > > >> > > RX: Received Fragment Errors >> > > 00000000 00000000 00000000 >> > > IPv4 IPv6 ARP Dropped >> > > 00000000 00000000 00000000 00000000 >> > > TX: Queued Sent Errors Timeouts >> > > 00000000 00000000 00000000 00000000 >> > > Total Errors: 00000000 >> > > >> > > IPv4 IPv6 TCP UDP ICMP ICMPv6 >> > > Received 0003 0010 0000 0009 0000 000a >> > > Dropped 0000 0000 0000 0000 0000 0008 >> > > IPv4 VHL: 0000 Frg: 0000 >> > > IPv6 VHL: 0000 >> > > Checksum 0000 ---- 0000 0000 ---- ---- >> > > TCP ACK: 0000 SYN: 0000 >> > > RST: 0000 0000 >> > > Type 0000 0000 ---- ---- 0000 0007 >> > > Sent 0006 000d 0000 0006 0000 000d >> > > Rexmit ---- ---- 0000 ---- ---- ---- >> > > nsh> ping www.google.com >> > > PING 216.58.200.68 56 bytes of data >> > > 56 bytes from 216.58.200.68: icmp_seq=0 time=240 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=1 time=220 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=2 time=210 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=3 time=210 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=4 time=210 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=5 time=160 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=6 time=120 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=7 time=120 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=8 time=260 ms >> > > 56 bytes from 216.58.200.68: icmp_seq=9 time=130 ms >> > > 10 packets transmitted, 10 received, 0% packet loss, time 10100 ms >> > > >> > > >> > > On Tue, Feb 11, 2020 at 1:38 PM Adam Feuer <a...@starcat.io> wrote: >> > > > >> > > > Thank you Xiang. >> > > > >> > > > I tried your config options, but the simulator still crashes when I >> do a >> > > > ping. >> > > > >> > > > You didn't attach a whole config file– would you be willing to send >> one? >> > > > >> > > > cheers >> > > > adam >> > > > >> > > > On Mon, Feb 10, 2020 at 8:50 PM Xiang Xiao < >> xiaoxiang781...@gmail.com> >> > > > wrote: >> > > > >> > > > > Do you enable CONFIG_SIM_NET_BRIDGE? >> > > > > To get the basic network, the below options are required: >> > > > > CONFIG_NET=y >> > > > > >> > > > > CONFIG_NETINIT_DHCPC=y >> > > > > CONFIG_NETUTILS_DHCPC=y >> > > > > >> > > > > CONFIG_NET_ICMP=y >> > > > > CONFIG_NET_ICMP_SOCKET=y >> > > > > >> > > > > CONFIG_NET_UDP=y >> > > > > CONFIG_NET_UDP_BINDTODEVICE=y >> > > > > >> > > > > CONFIG_SIM_NET_BRIDGE=y >> > > > > >> > > > > CONFIG_SYSTEM_PING=y >> > > > > >> > > > > IPv6 need more options: >> > > > > CONFIG_NET_ICMPv6=y >> > > > > CONFIG_NET_ICMPv6_AUTOCONF=y >> > > > > CONFIG_NET_ICMPv6_SOCKET=y >> > > > > >> > > > > CONFIG_NET_IPv6=y >> > > > > >> > > > > CONFIG_SYSTEM_PING6=y >> > > > > >> > > > > Anyway, you can try the attached config which has more options to >> get >> > > > > the better network. >> > > > > >> > > > > >> > > > > On Tue, Feb 11, 2020 at 12:22 PM Adam Feuer <a...@starcat.io> >> wrote: >> > > > > > >> > > > > > Xiang, >> > > > > > >> > > > > > Thanks for the tips! I tried to get this working, but I don't >> see any >> > > > > > network interfaces on my nuttx system other than loopback. >> > > > > > >> > > > > > I ran the script on my Linux box, it created a nuttx0: interface >> > > with an >> > > > > IP >> > > > > > address. But on the nuttx simulator all I see is this: >> > > > > > >> > > > > > nsh> ifconfig >> > > > > > > lo Link encap:Local Loopback at UP >> > > > > > > inet addr:127.0.0.1 DRaddr:127.0.0.1 Mask:255.0.0.0 >> > > > > > >> > > > > > >> > > > > > >> > > > > > >> > > > > > Do you have a defconfig that I can run that will bring up NSH? >> Or >> > > any >> > > > > > defconfig that will show the network is working? >> > > > > > >> > > > > > cheers >> > > > > > adam >> > > > > > >> > > > > > >> > > > > > >> > > > > > On Mon, Feb 10, 2020 at 7:45 PM Xiang Xiao < >> > > xiaoxiang781...@gmail.com> >> > > > > > wrote: >> > > > > > >> > > > > > > Adam, please follow this instruction if you want to connect >> the >> > > real >> > > > > > > network instead loopback: >> > > > > > > >> > > > > > > >> > > > > >> > > >> https://github.com/apache/incubator-nuttx/pull/249/commits/1b489449f790c2b4618df9133114bb05f0132e87 >> > > > > > > The setup is very simple, you don't need config any IP address >> > > > > manually. >> > > > > > > >> > > > > > > Thanks >> > > > > > > Xiang >> > > > > > > >> > > > > > > On Tue, Feb 11, 2020 at 2:23 AM Gregory Nutt < >> spudan...@gmail.com> >> > > > > wrote: >> > > > > > > > >> > > > > > > > >> > > > > > > > > I'm trying to get the NuttX simulator working with TCP/IP >> > > > > networking. I >> > > > > > > > > used the sim:nsh defconfig as a base, then used "make >> > > menuconfig" >> > > > > to >> > > > > > > select >> > > > > > > > > TCP/IP, ICMP, and ping commands. >> > > > > > > > > >> > > > > > > > > My host is Ubuntu 19.10 Eoan. I installed bridge-utils and >> > > > > configured a >> > > > > > > > > bridge device nuttx0 and gave it an IP address 10.0.1.1. >> From >> > > > > linux I >> > > > > > > can >> > > > > > > > > ping the bridge. >> > > > > > > > > >> > > > > > > > > I can compile and run the simulator. Commands seem to >> work. I >> > > can >> > > > > > > configure >> > > > > > > > > the eth0 interface with IP address 10.0.1.2 and bring it >> up >> > > using >> > > > > > > ifup. But >> > > > > > > > > when I try to ping the bridge, the nuttx simulator >> immediately >> > > > > exits >> > > > > > > with >> > > > > > > > > no messages. >> > > > > > > > > >> > > > > > > > > I checked the .config against the sim:nettest defconfig, >> and my >> > > > > > > settings in >> > > > > > > > > .config match that one. >> > > > > > > > > >> > > > > > > > > What am I doing wrong? How do I debug this? >> > > > > > > > >> > > > > > > > I don't use TCP/IP networking with the simulator. Perhaps >> Xiao >> > > Xiang >> > > > > > > > will respond later. >> > > > > > > > >> > > > > > > > I am creating a simulator example that runs the TCP blaster >> > > example >> > > > > > > > using the loopback 127.0.0.1 device. I will give that to >> you >> > > once I >> > > > > > > > verify it. >> > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > > >> > > > > > -- >> > > > > > Adam Feuer <a...@starcat.io> >> > > > > >> > > > >> > > > >> > > > -- >> > > > Adam Feuer <a...@starcat.io> >> > > >> > >> > >> > -- >> > Adam Feuer <a...@starcat.io> >> > > > -- > Adam Feuer <a...@starcat.io> > -- Adam Feuer <a...@starcat.io>
