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Hi all, i am using last uClinux dist-20160919 with kernel 4.4.0 ~ # cat /proc/version uClinux version 4.4.0-uc0amcore-001 (angelo@jerusalem) (gcc version 4.5.1 (GCC) ) #2 Sun Dec 4 22:45:04 CET 2016 ~ # cat /proc/cpuinfo CPU: COLDFIRE(m5307) MMU: none FPU: none Clocking: 88.4MHz BogoMips: 58.98 Calibration: 29491200 loops ~ # This in my custom board called "amcore" - mcf5307 based. Very strangely, - i can ping the local network from the board - board can be pinged from local network - board can connect tcp to host pc (by telnet) but - i cannot connect to any board service by TCP from any PC of the local net, also - i cannot connect TCP also from console, to the same board 127.0.0.1 BusyBox v1.21.0-uc0 (2016-12-04 22:11:16 CET) multi-call binary. Usage: ps ~ # ps PID USER VSZ STAT COMMAND 1 root 376 S init 2 root 0 SW [kthreadd] 3 root 0 SW [ksoftirqd/0] 5 root 0 SW< [kworker/0:0H] 6 root 0 SW [kworker/u2:0] 7 root 0 SW [kworker/u3:0] 8 root 0 SW< [writeback] 9 root 0 SW< [crypto] 10 root 0 SW< [bioset] 11 root 0 SW< [kblockd] 12 root 0 SW [kswapd0] 13 root 0 SW [kworker/0:1] 31 root 0 SW< [bioset] 32 root 0 SW< [bioset] 33 root 0 SW< [bioset] 34 root 0 SW< [bioset] 35 root 0 SW< [bioset] 36 root 0 SW< [bioset] 37 root 0 SW< [bioset] 38 root 0 SW< [bioset] 39 root 0 SW< [bioset] 40 root 0 SW< [bioset] 41 root 0 SW< [bioset] 42 root 0 SW< [bioset] 43 root 0 SW< [bioset] 44 root 0 SW< [bioset] 45 root 0 SW< [bioset] 46 root 0 SW< [bioset] 47 root 0 SW< [bioset] 48 root 0 SW< [bioset] 49 root 0 SW< [bioset] 50 root 0 SW< [bioset] 51 root 0 SW< [deferwq] 52 root 0 SW [kworker/u2:1] 67 root 0 SWN [jffs2_gcd_mtd2] 75 root 368 S {exe} httpd -h /home/httpd 77 root 352 S {exe} telnetd -l /bin/sh 79 root 576 S {exe} inetd 80 root 552 S -/bin/sh 81 root 0 SW [kworker/0:2] 84 root 0 SW [kworker/0:0] 86 root 384 R ps ~ # ~ # netstat -ant Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN Mainly, connecting from host side, i see 2 TCP_SYN sent, and no replies from these services. Seems like these services can't "accept" SYN. If any help on what i could try, very appreciated. Best regards, angelo dureghello |
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