[Click] Question regarding SetTXPower element usage.
John Bicket
jbicket at amsterdam.lcs.mit.edu
Wed Dec 1 11:34:34 EST 2004
Hi,
Unfortunately there is no support for transmit power control in the
atheros hal currently, and it just disregards the power value.
--john
Kishore Ramachandran [ramack at eden.rutgers.edu] wrote:
>Hi All:
>
>I would like to use this element but I cannot find documentation for the
>same. Currently I am using it as follows:
>
>SetTXPower(POWER a) where a is a constant between 0 and 63 (I looked at
>the source code for this element and saw this range there).
>
>However, when I observe the RSSI using a signal analyzer, there seems to
>be no noticeable change. Am I using this correctly? Is there any
>documentation for the same? What does this range correspond to?
>
>My script (the one generated by madwifi-stripped/gen_config_ap.click with
>the addition of this one line for SetTXPower) installs without complaints
>and functions smoothly as well.
>
>Thanks,
>Kishore
>
>On Mon, 29 Nov 2004, Beyers Cronje wrote:
>
>> Hi all,
>>
>> I get an intermittend "Unable to handle kernel NULL pointer
>> dereference" when using click-uninstall.
>>
>> Log file and running click config shown at the bottom.
>> I'd say around 90% of the time click-uninstall works 100%.
>>
>> I'm running one custom element named "ipStats". Ive
>> included the cleanup stage routines of this custom element.
>> Am I not cleaning the hashmaps correctly or might this
>> error be related to one of the other elements?
>>
>> Any ideas ?
>>
>> Kind regards
>>
>> Beyers Cronje
>>
>> ****Cleanup routines***************************
>> int P2PStats::initialize(ErrorHandler *) {
>> _tcp_gc_timer.initialize(this);
>> _tcp_gc_timer.schedule_after_s(_tcp_gc_interval);
>> _tcp_done_gc_timer.initialize(this);
>> _tcp_done_gc_timer.schedule_after_s(_tcp_done_gc_interval);
>>
>> _map.set_arena(router()->arena_factory());
>> return 0;
>> };
>>
>> void IPStats::clean_map() {
>> FlowInfo *fi;
>> for (Map::iterator iter = _map.begin(); iter; iter++)
>> { //Clean Flow map
>> fi = iter.value();
>> if (fi != 0)
>> delete fi;
>> };
>> potential_supernodes.clear();
>> for (Map::iterator iter = _to_clean_map.begin(); iter;
>> iter++) { //Clean any entries left in timedout or reset
>> flows
>> fi = iter.value();
>> if (fi != 0)
>> delete fi;
>> };
>> };
>>
>> void IPStats::cleanup(CleanupStage) {
>> clean_map();
>> };
>>
>>
>> *******Dump from log************************
>> Nov 29 22:38:32 slump kernel: device eth0 entered
>> promiscuous mode
>> Nov 29 22:41:53 slump kernel: device eth0 left promiscuous
>> mode
>> Nov 29 22:41:53 slump kernel: Unable to handle kernel NULL
>> pointer dereference at virtual address 00000003
>> Nov 29 22:41:53 slump kernel: printing eip:
>> Nov 29 22:41:53 slump kernel: f89233b2
>> Nov 29 22:41:53 slump kernel: *pde = 00000000
>> Nov 29 22:41:53 slump kernel: Oops: 0000
>> Nov 29 22:41:53 slump kernel: CPU: 0
>> Nov 29 22:41:53 slump kernel: EIP: 0010:[<f89233b2>]
>> Not tainted
>> Nov 29 22:41:53 slump kernel: EFLAGS: 00010297
>> Nov 29 22:41:53 slump kernel: eax: fffffecf ebx: 00000003
>> ecx: c0368d60 edx: f602b500
>> Nov 29 22:41:53 slump kernel: esi: f5bc23a4 edi: f5bc2380
>> ebp: dacadf5c esp: dacadd48
>> Nov 29 22:41:53 slump kernel: ds: 0018 es: 0018 ss:
>> 0018
>> Nov 29 22:41:53 slump kernel: Process rmmod (pid: 31559,
>> stackpage=dacad000)
>> Nov 29 22:41:53 slump kernel: Stack: c017afcc 464c457f
>> 00010101 00000000 00000000 00030003 00000001 00000b30
>> Nov 29 22:41:53 slump kernel: 00000034 464c457f
>> 00010101 00000000 00000000 00030003 00000001 80000b30
>> Nov 29 22:41:53 slump kernel: 00000034 000125a8
>> 00000000 00200034 00280003 000f0012 41ab8991 41ab8991
>> Nov 29 22:41:53 slump kernel: Call Trace: [<c017afcc>]
>> [<c01388b5>] [<c01388b5>] [<c0136db3>] [<c012bbce>]
>> Nov 29 22:41:53 slump kernel: [<c012bf31>] [<c0130a05>]
>> [<c012bcb0>] [<c0136db3>] [<c012bbce>] [<c012bf31>]
>> Nov 29 22:41:53 slump kernel: [<c01161e8>] [<f89bb373>]
>> [<c016876a>] [<f89bb36d>] [<f89bb36d>] [<f89a69bc>]
>> Nov 29 22:41:53 slump kernel: [<c011cc43>] [<f89a3e77>]
>> [<c011d2b1>] [<c011c536>] [<c010760f>]
>> Nov 29 22:41:53 slump kernel:
>> Nov 29 22:41:53 slump kernel: Code: 8b 1b 50 e8 26 7c 83 c7
>> 83 c4 10 39 f3 75 e7 89 77 24 89 77
>>
>> ******Click config***********
>>
>> ip :: Strip(14)
>> -> MarkIPHeader
>> -> ipc :: IPClassifier(src net 196.0.0.0/8, dst net
>> 196.0.0.0/8, -);
>> dialup :: ipStats;
>> lan :: ipStats;
>> ipc[0] -> [0]dialup;
>> ipc[1] -> [1]dialup;
>> dialup -> Discard;
>> ipc[2] -> ipc2 :: IPClassifier(src net 10.10.10.0/24,
>> dst net 10.10.10.0/24, -);
>> ipc2[0] -> [0]lan;
>> ipc2[1] -> [1]lan;
>> lan -> Discard;
>> ipc2[2] -> Discard;
>>
>> unq :: Unqueue;
>> // Input paths for eth0
>> c0 :: Classifier(12/0800, -);
>> fd :: FromDevice(eth0, PROMISC true, BURST 16);
>> fd -> Queue(5000) -> unq -> c0;
>> c0[0] -> ip;
>> c0[1] -> Discard;
>>
>> td :: ToDevice(eth0);
>> Idle -> td;
>> ScheduleInfo(fd 1, td 0.1, ipStats 1, unq 1);
>>
>> _____________________________________________________________________
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