On 09/07/2011 03:05 PM, Stefan Zwanenburg wrote:
* My NIC variant has the following ID: 10ec:8172. I suppose that means it's an
RTL8192SEvA2. I did not know this at the time of writing however.
* Kernel version: it's a vanilla kernel + gentoo patches (exact gentoo ebuild
version: 3.0.4).
* Driver: I'm using the one for the RTL8192SE that is currently in the kernel
tree, so no compat-wireless.
* Access point: 3Com 3CRWER300-73 with firmware version 1.12.06.
Anyhow, I've tried the driver on Realtek's site both for the RTL8192se and
RTL8192SEvA2 (after having to rename RX_FLAG_TSFT to RX_FLAG_MACTIME_MPDU, and
adding an include to "linux/proc_fs.h", both to avoid compilation errors),
neither of which allow me to connect over an 802.11n link. At this point, I'm
unsure how to proceed. I've run a netperf test, which maxed out at 22Mbps, and
my router reports my MAC address as being connected over an 11g link. Is there
anything I can do to further prove that I have a problem?
Although I do not remember anything in the latest driver revisions that would
affect rtl8192se, thus compat-wireless should not be necessary.
The unit I reported in my previous message was a 1x1 model. Tonight, I tested a
2x2, which lspci reports as 06:00.0 Network controller [0280]: Realtek
Semiconductor Co., Ltd. RTL8192SE Wireless LAN Controller [10ec:8174] (rev 10).
The netperf test results are:
TCP_MAERTS TX Test: 53.21 53.72 51.59 57.70 55.11 55.13 56.02 52.42 42.90 50.06
TCP_MAERTS RX Test: 57.64 62.44 68.77 61.47 47.29 58.74 63.13 61.91 59.00 63.42
Results: TX: max 57.70, min 42.90. Mean 52.79(3.92)
RX: max 68.77, min 47.29. Mean 60.38(5.28)
TCP_STREAM TX Test: 73.25 79.46 70.42 66.47 79.26 64.91 68.11 71.63 70.36 65.44
TCP_STREAM RX Test: 46.67 40.17 50.84 49.79 37.89 50.89 43.79 47.76 46.89 49.01
Results: TX: max 79.46, min 64.91. Mean 70.93(4.93)
RX: max 50.89, min 37.89. Mean 46.37(4.22)
TCP_SENDFILE TX Test: 61.73 74.61 59.25 53.56 51.50 68.91 57.43 62.41 53.91 51.94
TCP_SENDFILE RX Test: 38.76 42.08 47.27 51.58 47.70 51.86 52.09 45.84 44.25 39.48
Results: TX: max 74.61, min 51.50. Mean 59.52(7.23)
RX: max 52.09, min 38.76. Mean 46.09(4.69)
finger@larrylap:~> iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"lwfdjf-n"
Mode:Managed Frequency:2.422 GHz Access Point: C0:3F:0E:BE:2B:44
Bit Rate=270 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-35 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Next, I will test my other card, which is a 1x2 model with kernel 3.0.4. I have
also Cc'd Chaoming Li at Realsil, the group that actually wrote the driver.
Perhaps their lab has the same AP as yours.
Larry
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