Sorry for my unclear information. i am using backports-4.1.1-1 download from http://drvbp1.linux-foundation.org/~mcgrof/rel-html/backports/ and firmware is firmware-2.bin_999.999.0.636
i doesn't expect to get very high performance ibss, but just want to figure out why the node C will deteriorate the performance Thanks, Jay 2015-10-28 0:12 GMT+08:00 Ben Greear <[email protected]>: > On 10/27/2015 08:51 AM, Yu-Chieh wrote: >> >> Hi Ben, >> i did some experiments today. >> 1. change the node C to AP mode (using same MAC), performance of A to B >> is good >> 2. keep node C as adhoc mode but chaneg the cell-id and ssid. >> performance is deteriorated >> I am just wondering if any packet of adhoc mode(beacon? probe request? >> probe response) will screw up wifi network? > > > In general, I see lower throughput with IBSS. Among other things, > it does not allow AMSDU in ath10k, apparently due to chipset bugs. > > Aside from AMSDU, I'm not sure why else it might have issues. > > Whenever you start talking performance (or specific bugs for that matter) > in ath10k, you should mention what firmware and driver you are using. > > Thanks, > Ben > > > >> >> Thanks, >> Jay >> >> 2015-10-27 1:47 GMT+08:00 Ben Greear <[email protected]>: >>> >>> On 10/26/2015 10:38 AM, Yu-Chieh wrote: >>>> >>>> >>>> Hi Ben, >>>> I also geuss that mignt be BSSID mask issue, however i have no idea >>>> about the patten >>>> I can find bssid_mask function in ath5k and ath9k but not in ath10k. >>>> Do your suggest me to use XX:XX:XX:YY:YY:XX, XX should be same and YY >>>> could be different? >>> >>> >>> >>> Please try something that works properly with the way ath9k does it's >>> mask and see if that fixes your problem in ath10k. >>> >>> Basically, if your NIC has an address: 00 11 22 33 44 55, then change >>> the >>> 33 and/or 44 >>> octets when creating secondary vifs. This assumes you buy your NICs in >>> batches and the >>> low octet is likely unique. >>> >>> As long as you have a unique octet among all of your radios in the local >>> RF >>> environment, then you should be fine. >>> >>> Somewhere there was once a security related document on how to screw up >>> wifi networks by setting a mask to purposefully cause troubles....you >>> might >>> try to find that and see if it provides some more precise details on >>> the masking algorithm. >>> >>> Thanks, >>> Ben >>> >>>> >>>> Thanks. >>>> >>>> Jay >>>> >>>> 2015-10-26 23:12 GMT+08:00 Ben Greear <[email protected]>: >>>>> >>>>> >>>>> Your probably have BSSID mask collision. Rule of thumb is to leave >>>>> all octets the same except the second and third (from the right) >>>>> byte. That usually gives you unique masks assuming the right-most >>>>> byte is unique for your radios. >>>>> >>>>> Thanks, >>>>> Ben >>>>> >>>>> >>>>> >>>>> On 10/26/2015 03:50 AM, Yu-Chieh wrote: >>>>>> >>>>>> >>>>>> >>>>>> Hi, >>>>>> >>>>>> I am working on IBSS mode by using ath10k. However i met some problem >>>>>> about the performance issue >>>>>> First of all, i set up two nodes, A (74:DA:38:19:19:DC) and B >>>>>> (74:DA:38:06:E1:96) and run iperf. >>>>>> i can get around 170 Mbps form A to B >>>>>> >>>>>> Then, i turn on the third node C(74:DA:38:06:E1:BE). >>>>>> The performance is deteriorated to around 30Mbps. >>>>>> If i turn off node C, the performance go back to 170 Mbps. >>>>>> >>>>>> At the same environment and same devices, i jsut change the mac of B >>>>>> to (74:DA:38:06:E1:B2) >>>>>> Everything is good. >>>>>> No matter node c is on or off, the performance always keep on 170Mbps. >>>>>> >>>>>> Anyone have any idea about this problem? >>>>>> >>>>>> Jay >>>>>> >>>>>> _______________________________________________ >>>>>> ath10k mailing list >>>>>> [email protected] >>>>>> http://lists.infradead.org/mailman/listinfo/ath10k >>>>>> >>>>> >>>>> -- >>>>> Ben Greear <[email protected]> >>>>> Candela Technologies Inc http://www.candelatech.com >>>> >>>> >>>> >>> >>> >>> -- >>> Ben Greear <[email protected]> >>> Candela Technologies Inc http://www.candelatech.com >>> >> > > > -- > Ben Greear <[email protected]> > Candela Technologies Inc http://www.candelatech.com > _______________________________________________ ath10k mailing list [email protected] http://lists.infradead.org/mailman/listinfo/ath10k
