Karl Reichert wrote:
> Jan Kiszka wrote:
>> Karl Reichert wrote:
>>> Jan Kiszka wrote:
>>>> Karl Reichert wrote:
>>>>> Jan Kiszka wrote:
>>>>>> Karl Reichert wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> found sth, looks like a bug: When using 'tdmacfg rteth0 slot 0 100
>> -s
>>>>>> 100 -l rtnet.log' I do not get any logfile.
>>>>>>
>>>>>> Everything is possible given that this features was never intensively
>>>>>> used AFAIK (at least by myself). I do remember it once worked - right
>>>>>> after I implemented it.
>>>>>>
>>>>>> Just to double-check: That tdmacfg command is the first one issued
>>>> after
>>>>>> "tdmacfg rteth0 master/slave", isn't it?
>>>>>>
>>>>>> Jan
>>>>>>
>>>>> Yes it is. Searched whole / for rtnet.log, nothing is there. But from
>> a
>>>> quick look at sourcecode of tdmacfg I can't find any reason why it
>> doesn't
>>>> works.
>>>>
>>>> [It's a shame, but I'm lacking a test environment...]
>>>> Please collect an "strace" dump of the related tdmacfg run. Let's see
>> if
>>>> that already gives some hints. Next step would then be gdb/ddd.
>>>>
>>>> Jan
>>>>
>>> Hi Jan,
>>>
>>> See below for strace log. Seems like it doesn't even tries to open a
>> file:
>>>
>>>
>>> [EMAIL PROTECTED]:/usr/local/rtnet/sbin# strace ./tdmacfg rteth0 slot 0 100
>>> -s
>> 100 -l rtnet.log
>>> execve("./tdmacfg", ["./tdmacfg", "rteth0", "slot", "0", "100", "-s",
>> "100", "-l", "rtnet.log"], [/* 34 vars */]) = 0
>>> brk(0) = 0x804b000
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>> directory)
>>> mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0xb7f85000
>>> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
>> directory)
>>> open("/etc/ld.so.cache", O_RDONLY) = 3
>>> fstat64(3, {st_mode=S_IFREG|0644, st_size=34837, ...}) = 0
>>> mmap2(NULL, 34837, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f7c000
>>> close(3) = 0
>>> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
>> directory)
>>> open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
>>> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0`\1\000"...,
>> 512) = 512
>>> fstat64(3, {st_mode=S_IFREG|0644, st_size=1307104, ...}) = 0
>>> mmap2(NULL, 1312164, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
>> 0) = 0xb7e3b000
>>> mmap2(0xb7f76000, 12288, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13b) = 0xb7f76000
>>> mmap2(0xb7f79000, 9636, PROT_READ|PROT_WRITE,
>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f79000
>>> close(3) = 0
>>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
>> 0) = 0xb7e3a000
>>> set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e3a6c0,
>> limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
>> seg_not_present:0, useable:1}) = 0
>>> mprotect(0xb7f76000, 4096, PROT_READ) = 0
>>> munmap(0xb7f7c000, 34837) = 0
>>> open("/dev/rtnet", O_RDWR) = 3
>>> ioctl(3, NCP_IOC_GETMOUNTUID, 0x804a760) = 0
>> This is TDMA_IOC_CAL_RESULT_SIZE, the command to calculate the expected
>> size of the log file. It returns 0, and that can only mean that TDMA
>> considers the addressed Ethernet device as already calibrated. Possible
>> reasons:
>> - some "slot" command was already issued on the device
>> - device is configured as (primary) master
>
> Bingo, that's the case. I run '/usr/local/rtnet/sbin/tdmacfg rteth0 master
> 10000 -i 1' before ...
>
> But still I don't get it: with above command I just start the master, to
> assign a send slot, I also have to assign a slot. Can't I get a log for this?Nope, because the primary master doesn't calibrate itself - usually. Against which master should it do so? It only goes through calibration if it is restarting after a failure and there is currently a backup master running in the network. Jan
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