On 05/11/12 12:01, Johannes Berg wrote:
On Mon, 2012-11-05 at 11:04 +0000, Eddie Chapman wrote:
And, can you also test 3.7-rc4, to ensure that the problem isn't there
as well?
I've narrowed it down to this patch which introduces the problem:
Johannes Berg:
mac80211: connect with HT20 if HT40 is not permitted
commit: 3a40414f826a8f1096d9b94c4a53ef91b25ba28d
The other 3 patches above give me no problems at all, so I am now
running my 3.6.5 with those 3 back in, and just the HT20/HT40 patch
removed, and throughput is perfect. As soon as I introduce the patch
HT20/HT40 throughput drops right down to a fifth of what it was.
This should also be the case on 3.7-rc4, since the patch came from
there, and I don't see any reason to believe rt2800 would behave
differently here, for some reason.
Can you show me the contents of
the /sys/kernel/debug/ieee80211/phy0/ht40allow_map debugfs file and "iw
reg get" command?
johannes
Hi Johannes,
Here is the output of /sys/kernel/debug/ieee80211/phy0/ht40allow_map:
2412 HT40 +
2417 HT40 +
2422 HT40 +
2427 HT40 +
2432 HT40 -+
2437 HT40 -+
2442 HT40 -+
2447 HT40 -
2452 HT40 -
2457 HT40 -
2462 HT40 -
2467 HT40
2472 HT40
2484 HT40
and "iw reg get" says:
country 00:
(2402 - 2472 @ 40), (6, 20)
(2457 - 2482 @ 20), (6, 20), PASSIVE-SCAN, NO-IBSS
(2474 - 2494 @ 20), (6, 20), NO-OFDM, PASSIVE-SCAN, NO-IBSS
(5170 - 5250 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(5735 - 5835 @ 40), (6, 20), PASSIVE-SCAN, NO-IBSS
(57240 - 63720 @ 2160), (N/A, 0)
I captured both of these with the HT20/HT40 patch applied.
let me know if you need anything else.
thanks,
Eddie
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