* a-MSDU question (bug in debugfs?)
@ 2011-10-26 19:03 Ben Greear
2011-10-26 19:08 ` Johannes Berg
0 siblings, 1 reply; 3+ messages in thread
From: Ben Greear @ 2011-10-26 19:03 UTC (permalink / raw)
To: linux-wireless@vger.kernel.org
This code from net/mac80211/debugfs_sta.c appears to say that
if the IEEE80211_HT_CAP_MAX_AMSDU is set, we are at value 3839,
but elsewhere on the web it appears the opposite.
Anyone know what is correct? I'm having no good luck finding
an official document about this...
PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
"3839 bytes");
PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
"7935 bytes");
Thanks,
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: a-MSDU question (bug in debugfs?)
2011-10-26 19:03 a-MSDU question (bug in debugfs?) Ben Greear
@ 2011-10-26 19:08 ` Johannes Berg
2011-10-26 19:17 ` Ben Greear
0 siblings, 1 reply; 3+ messages in thread
From: Johannes Berg @ 2011-10-26 19:08 UTC (permalink / raw)
To: Ben Greear; +Cc: linux-wireless@vger.kernel.org
On Wed, 2011-10-26 at 12:03 -0700, Ben Greear wrote:
> This code from net/mac80211/debugfs_sta.c appears to say that
> if the IEEE80211_HT_CAP_MAX_AMSDU is set, we are at value 3839,
> but elsewhere on the web it appears the opposite.
>
> Anyone know what is correct? I'm having no good luck finding
> an official document about this...
>
> PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
> "3839 bytes");
> PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
> "7935 bytes");
iw also has the other way around and I probably would have checked
against 802.11n. If you can't find that google for getieee
johannes
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: a-MSDU question (bug in debugfs?)
2011-10-26 19:08 ` Johannes Berg
@ 2011-10-26 19:17 ` Ben Greear
0 siblings, 0 replies; 3+ messages in thread
From: Ben Greear @ 2011-10-26 19:17 UTC (permalink / raw)
To: Johannes Berg; +Cc: linux-wireless@vger.kernel.org
On 10/26/2011 12:08 PM, Johannes Berg wrote:
> On Wed, 2011-10-26 at 12:03 -0700, Ben Greear wrote:
>> This code from net/mac80211/debugfs_sta.c appears to say that
>> if the IEEE80211_HT_CAP_MAX_AMSDU is set, we are at value 3839,
>> but elsewhere on the web it appears the opposite.
>>
>> Anyone know what is correct? I'm having no good luck finding
>> an official document about this...
>>
>> PRINT_HT_CAP((htc->cap& BIT(11)), "Max AMSDU length: "
>> "3839 bytes");
>> PRINT_HT_CAP(!(htc->cap& BIT(11)), "Max AMSDU length: "
>> "7935 bytes");
>
> iw also has the other way around and I probably would have checked
> against 802.11n. If you can't find that google for getieee
Thanks, I found the 802.11n doc. Page 69 (section 7.3.2.56) seems to indicate
this debugfs code is reversed. I'll post a patch when I
get the rest of my tree sorted out, if no one beats me to it.
Thanks,
Ben
>
> johannes
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
^ permalink raw reply [flat|nested] 3+ messages in thread
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