<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">If you want to associate to AP. You better use wpa_supplicant (wireless API).<br><br>--- On <b>Thu, 4/28/11, Tchang Chen (ST-CO/ENG1.3) <i><Chen.Tchang@nl.bosch.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Tchang Chen (ST-CO/ENG1.3) <Chen.Tchang@nl.bosch.com><br>Subject: RE: mac80211 questions<br>To: "hong zhang" <henryzhang62@yahoo.com><br>Cc: "libnl@lists.infradead.org" <libnl@lists.infradead.org><br>Date: Thursday, April 28, 2011, 9:29 AM<br><br><div id="yiv1734722961">
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">Hello Hong,</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">Here is the whole action sequence (I added some extra print
statements for debugging purposes).</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2"><strong><font color="#800080">lspci<br></font></strong>00:00.0 Host bridge: Xilinx Corporation:
Unknown device 0300 (rev 1a)<br>00:01.0 Multimedia audio controller: ALi
Corporation M5451 PCI AC-Link Controller Audio Device (rev 02)<br>00:02.0 ISA
bridge: ALi Corporation M1533/M1535/M1543 PCI to ISA Bridge [Aladdin
IV/V/V+]<br>00:03.0 Modem: ALi Corporation M5457 AC'97 Modem
Controller<br>00:09.0 PCI bridge: Texas Instruments PCI2250 PCI-to-PCI Bridge
(rev 02)<br>00:0c.0 Non-VGA unclassified device: ALi Corporation M7101 Power
Management Controller [PMU]<br>00:0f.0 USB Controller: ALi Corporation USB 1.1
Controller (rev 03)<br>01:03.0 Network controller: Ralink corp. RT2561/RT61 rev
B 802.11g<br><font color="#800080"><strong>~ # modprobe rt2x00lib<br>~ # modprobe
rt2x00pci<br>~ # modprobe rt61pci<br></strong></font>rt61pci 0000:01:03.0:
enabling device (0000 -> 0002)<br>rt61pci 0000:01:03.0: enabling bus
mastering<br>rt61pci 0000:01:03.0: enabling Mem-Wr-Inval<br>phy0 ->
rt61pci_validate_eeprom: EEPROM recovery - NIC: 0xff80<br>phy0 ->
rt2x00_set_chip: Info - Chipset detected - rt: 2561, rf: 0003, rev:
000c.<br>ieee80211 phy0: Selected rate control algorithm
'minstrel_ht'<br>Registered led device: rt61pci-phy0::radio<br>Registered led
device: rt61pci-phy0::assoc<br><font color="#800080"><strong>~ #
lsmod<br></strong></font>rt61pci 26972 0 - Live 0xe00b7000<br>rt2x00pci 3706 1
rt61pci, Live 0xe00a5000<br>rt2x00lib 32489 2 rt61pci,rt2x00pci, Live
0xe0076000<br><font color="#800080"><strong>~ # iwconfig wlan0 essid CTC<br>~ #
iwconfig wlan0 channel 6<br>~ # iwconfig wlan0 enc off rate 12Mb/s<br>~ #
iwconfig wlan0 ap 00:13:F7:44:21:74<br>~ #
iwconfig<br></strong></font>lo no
wireless extensions.</font></span></div>
<div> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">eth0 no wireless
extensions.</font></span></div>
<div> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">wlan0 IEEE 802.11bg
ESSID:"CTC" <br>
Mode:Managed Frequency:2.437 GHz Access Point:
Not-Associated
<br> Tx-Power=0
dBm <br>
Retry long limit:7 RTS thr:off Fragment
thr:off<br> Encryption
key:off<br> Power
Management:off<br>
<br><font color="#800080"><strong>~ # ifconfig wlan0 192.168.2.11
up<br></strong></font>phy0 -> rt2x00lib_start: Info - Entering
rt2x00lib_start ....<br>phy0 -> rt2x00lib_request_firmware: Info - Loading
firmware file 'rt2561.bin'.<br>phy0 -> rt2x00lib_request_firmware: Info -
Firmware detected - version: 0.8.<br>phy0 -> rt2x00lib_request_firmware: Info
- Firmware checked - FW_OK<br>phy0 -> rt2x00lib_load_firmware: Info -
Firmware loaded, retval = 0.<br>phy0 -> rt2x00lib_start: Info - Firmware has
been loaded '0'.<br>phy0 -> rt2x00lib_start: Info - Device has been
initialized '0'.<br>phy0 -> rt2x00lib_enable_radio: Info - Initializing all
data queues ...<br>phy0 -> rt2x00queue_init_queues: Info - Resetting queue
....<br>phy0 -> rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0
-> rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 4<br>phy0 ->
rt2x00lib_enable_radio: Info - All data queues have been initialized ...<br>phy0
-> rt2x00lib_enable_radio: Info - Set device state to RADIO on, status =
0.<br>phy0 -> rt2x00lib_enable_radio: Info - Setting state, led_radio and
led_activity.<br>phy0 -> rt2x00lib_enable_radio: Info - Enabling RX
....<br>phy0 -> rt2x00lib_enable_radio: Info - Starting watchdog
monitoring...<br>phy0 -> rt2x00lib_enable_radio: Info - Waking the queues
....<br>phy0 -> rt2x00lib_start: Info - Radio has been enabled
'0'.<br>ieee80211 phy0: Idle on, Count= 0<br>ieee80211 phy0: device now
idle<br>phy0 -> rt2x00mac_conf_tx: Info - Configured TX queue 0 - CWmin: 3,
CWmax: 4, Aifs: 2, TXop: 102.<br>phy0 -> rt2x00mac_conf_tx: Info - Configured
TX queue 1 - CWmin: 4, CWmax: 5, Aifs: 2, TXop: 188.<br>phy0 ->
rt2x00mac_conf_tx: Info - Configured TX queue 2 - CWmin: 5, CWmax: 10, Aifs: 3,
TXop: 0.<br>phy0 -> rt2x00mac_conf_tx: Info - Configured TX queue 3 - CWmin:
5, CWmax: 10, Aifs: 7, TXop: 0.<br>ieee80211 phy0: device no longer idle -
scanning<br>~ # ieee80211 phy0: Idle on, Count= 0<br>ieee80211 phy0: device now
idle<br>ieee80211 phy0: Idle on, Count= 0<br>ieee80211 phy0: Idle on, Count=
0<br><font color="#800080"><strong>iwconfig<br></strong></font>lo
no wireless extensions.</font></span></div>
<div><font color="#0000ff" face="Arial" size="2"></font> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">eth0 no wireless
extensions.</font></span></div>
<div> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2">wlan0 IEEE 802.11bg
ESSID:"CTC" <br>
Mode:Managed Frequency:2.437 GHz Access Point:
Not-Associated
<br> Tx-Power=20
dBm <br>
Retry long limit:7 RTS thr:off Fragment
thr:off<br> Encryption
key:off<br> Power
Management:off<br>
<br><font color="#800080"><strong>~ # ifconfig wlan0 192.168.2.11
down<br></strong></font>ieee80211 phy0: Idle on, Count= 0<br><font color="#800080"><strong>~ # <br>~ # ifconfig wlan0 192.168.2.11
up<br></strong></font>phy0 -> rt2x00lib_start: Info - Entering
rt2x00lib_start ....<br>phy0 -> rt2x00lib_load_firmware: Info - Firmware
loaded, retval = 0.<br>phy0 -> rt2x00lib_start: Info - Firmware has been
loaded '0'.<br>phy0 -> rt2x00lib_start: Info - Device has been initialized
'0'.<br>phy0 -> rt2x00lib_enable_radio: Info - Initializing all data queues
...<br>phy0 -> rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0
-> rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 24<br>phy0 ->
rt2x00queue_init_queues: Info - Resetting queue ....<br>phy0 ->
rt2x00queue_init_queues: Info - queue->limit = 4<br>phy0 ->
rt2x00lib_enable_radio: Info - All data queues have been initialized
...</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#800080" face="Arial" size="2"><strong><Here the program stalls in module rt2x00dev.c,
function rx2x00lib_enable_radio</strong></font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#800080" face="Arial" size="2"><strong> at the point that the state is being set to
STATE_RADIO_ON, see below ...></strong></font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961766380614-28042011"><font color="#800080" face="Arial" size="2"><strong> </strong></font></span></div>
<div><font face="Arial" size="2"></font><font color="#800080" face="Arial" size="2"><strong>/*<br> * Initialize all data queues.<br>
*/<br> /* Added by C. Tchang */ <br> INFO(rt2x00dev,
"Initializing all data queues ...\n");<br> /* End added */
<br> <br> rt2x00queue_init_queues (rt2x00dev);<br> <br> /*
Added by C. Tchang */ <br> INFO(rt2x00dev, "All data queues have
been initialized ...\n");<br> /* End added */ </strong></font></div>
<div><font color="#800080"><strong></strong></font> </div>
<div><font color="#800080"><strong><font face="Arial" size="2"><font color="#ff0000"> /*<br> * Enable radio.<br> */<br> status
=<br>
rt2x00dev->ops->lib->set_device_state(rt2x00dev,
STATE_RADIO_ON);<br></font> <br> /* Added by C. Tchang
*/ <br> INFO(rt2x00dev, "Set device state to RADIO on, status =
%d.\n", status);<br> /* End added */
<br> <br> if (status)<br> return
status;</font></strong></font></div>
<div><font color="#800080"><strong><font face="Arial" size="2"></font></strong></font> </div>
<div><strong><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">---------------------------------------------------</font></span></strong></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">Q1: What could be
the reason for this behavior ?</font></span></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">I suppose there
should be some acknowledge (or time-out) of the state
transition.</font></span></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">Q2: How can I
locate the respons of the Wireless card ? </font></span></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">Q3: How can this be
resolved ?</font></span></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">Thx (again) for your
support,</font></span></div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2">Chen</font></span></div>
<div><span class="yiv1734722961766380614-28042011"></span><span class="yiv1734722961766380614-28042011"><font face="Arial" size="2"></font></span> </div>
<div><font color="#800080"><br></font>
<hr tabindex="-1">
<font face="Tahoma" size="2"><b>From:</b> hong zhang [mailto:henryzhang62@yahoo.com]
<br><b>Sent:</b> Thursday, April 28, 2011 4:05 AM<br><b>To:</b> Tchang Chen
(ST-CO/ENG1.3)<br><b>Cc:</b> libnl@lists.infradead.org<br><b>Subject:</b> RE:
mac80211 questions<br></font><br></div>
<div></div>
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td valign="top">Which command does association?<br>I do not see any
commands of both wireless extension and iw for scan, associate.<br><br>---
On <b>Wed, 4/27/11, Tchang Chen (ST-CO/ENG1.3)
<i><Chen.Tchang@nl.bosch.com></i></b> wrote:<br>
<blockquote style="padding-left: 5px; margin-left: 5px; border-left: 2px solid rgb(16, 16, 255);"><br>From:
Tchang Chen (ST-CO/ENG1.3) <Chen.Tchang@nl.bosch.com><br>Subject:
RE: mac80211 questions<br>To: "hong zhang"
<henryzhang62@yahoo.com><br>Cc: "libnl@lists.infradead.org"
<libnl@lists.infradead.org><br>Date: Wednesday, April 27, 2011,
5:23 AM<br><br>
<div id="yiv1734722961">
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Hello Hong,</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Thanks for your reply to my libnl
questions.</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">I currently use the old Wireless
Extensions to configure my link.</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">I don't think using Wireless Extensions
(in stead of iw) is the problem, but more the
mac80211</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">or even the link to the hardware
signals.</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">After loading the modules (mac80211,
rt2x00lib, rt2x00pci and rt61pci) for a </font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Ralink RT2561 mini-PCI wireless card, I
tried to setup a wireless link</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">(essid, channel, rate, end key
off, ap have been correctly set).</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">I get the following
feedback:</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">~ # ifconfig wlan0 192.168.2.2
up<br>phy0 -> rt2x00lib_request_firmware: Info - Loading firmware
file 'rt2561.bin'.<br>phy0 -> rt2x00lib_request_firmware: Info -
Firmware detected - version: 0.8.<br>phy0 ->
rt2x00lib_request_firmware: Info - Firmware checked - FW_OK<br>phy0
-> rt2x00lib_load_firmware: Info - Firmware loaded, retval =
0.<br>phy0 -> rt2x00lib_start: Info - Device has been initialized
'0'.<br>phy0 -> rt2x00lib_start: Info - Radio has been enabled
'0'.<br>ieee80211 phy0: device now idle<br>phy0 -> rt2x00mac_conf_tx:
Info - Configured TX queue 0 - CWmin: 3, CWmax: 4, Aifs: 2, TXop:
102.<br>phy0 -> rt2x00mac_conf_tx: Info - Configured TX queue 1 -
CWmin: 4, CWmax: 5, Aifs: 2, TXop: 188.<br>phy0 -> rt2x00mac_conf_tx:
Info - Configured TX queue 2 - CWmin: 5, CWmax: 10, Aifs: 3, TXop:
0.<br>phy0 -> rt2x00mac_conf_tx: Info - Configured TX queue 3 -
CWmin: 5, CWmax: 10, Aifs: 7, TXop: 0.<br><strong><font color="#ff0000">ieee80211 phy0: device no longer idle -
scanning<br>ieee80211 phy0: device now
idle</font></strong></font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#800080" face="Arial" size="2"><strong></strong></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">iwconfig<br>lo no
wireless extensions.</font></span></div>
<div><font color="#0000ff" face="Arial" size="2"></font> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">eth0 no
wireless extensions.</font></span></div>
<div><font color="#0000ff" face="Arial" size="2"></font> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">wlan0 IEEE
802.11bg
ESSID:"CTC"<br>
Mode:Managed Frequency:2.437 GHz <font color="#ff0000">Access
Point:
Not-Associated<br></font>
Tx-Power=20
dBm<br>
Retry long limit:7 RTS thr:off Fragment
thr:off<br>
Encryption
key:off<br> Power
Management:off</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">The system did not manage to associate
with the AP.</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Q1: What can be the reason(s) for not
obtaining an association with the AP ?</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Q2: </font> <font color="#0000ff" face="Arial" size="2">Where can I find more detailed information about
the corresponding action sequences ?</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Q3: Which source files in mac80211 are
involved ?</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"> I
could not locate net/mac80211/ieee80211_sta.c in
2.6.37-4.</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Q4: Do you perhaps have any further
suggestions how to debug this issue ?</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Hope you can help me
again,</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Best regards,</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2">Chen</font></span></div>
<div dir="ltr" align="left"><span class="yiv1734722961-27042011"><font color="#0000ff" face="Arial" size="2"></font></span> </div><font color="#0000ff" face="Arial" size="2"></font><font color="#0000ff" face="Arial" size="2"></font><font color="#0000ff" face="Arial" size="2"></font><br>
<div class="yiv1734722961OutlookMessageHeader" dir="ltr" lang="en-us" align="left">
<hr tabindex="-1">
<font face="Tahoma" size="2"><b>From:</b> hong zhang
[mailto:henryzhang62@yahoo.com] <br><b>Sent:</b> Wednesday, April 27,
2011 3:10 AM<br><b>To:</b> libnl@lists.infradead.org; Tchang Chen
(ST-CO/ENG1.3)<br><b>Subject:</b> Re: Libnl
questions<br></font><br></div>
<div></div>
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td valign="top"><font color="#0000ff" face="Arial" size="2"></font><br><br>--- On <b>Tue, 4/26/11, Tchang Chen
(ST-CO/ENG1.3) <i><Chen.Tchang@nl.bosch.com></i></b>
wrote:<br>
<blockquote style="padding-left: 5px; margin-left: 5px; border-left: 2px solid rgb(16, 16, 255);"><font color="#0000ff" face="Arial" size="2"></font><br>From: Tchang Chen
(ST-CO/ENG1.3) <Chen.Tchang@nl.bosch.com><br>Subject:
Libnl questions<br>To: "libnl@lists.infradead.org"
<libnl@lists.infradead.org><br>Date: Tuesday, April 26,
2011, 4:16 AM<br><br>
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<div>Hi,</div>
<div><font color="#0000ff"></font> </div>
<div>I would like to use iw-0.9.22 in combination with cfg80211,
libnl and Linux kernel 2.6.37-4.</div>
<div>I noticed that cfg80211 is part of the Linux kernel
distribution 2.6.37-4.</div>
<div><font color="#0000ff"></font> </div>
<div>Q1: Can I use the latest libnl-3.0 in combination
with the software mentioned above ?</div>
<div> Or do I have to apply an
earlier version ? If so, which version will fit best
?<br><br>ANS: Yes, you should be able to do it.<br></div>
<div> </div>
<div>Q2: I understand that nl80211 and cfg80211 are intended to
replace Wireless-Extensions.</div>
<div> Do is the additional value
of nl80211 ? Will cfg80211 be sufficient for setup and
configuration ?</div>
<div><br>ANS: Yes, iw is degined to communicate with wireless
driver using nl80211/cfg80211 and wireless stack. <br><br></div>
<div>Q3: I suspect that libnl should be implemented as user
kernel module in kernel space.</div>
<div> Is this assumption correct
?</div>
<div><br> ANS: Actually, libnl is used for user space and
kernel space.<br><br></div>
<div>Q4: Are there any other issues, which should be taken in
mind for achieving a succesful implementation ?</div>
<div><br>ANS: You use it and tell us what you find
out.<br> <br></div>
<div>My hardware platform: </div>
<div>PetaLinux v2.1 (embedded Linux 2.6.37-4 for a MicroBlaze
softcore processor on a FPGA)</div>
<div><br></div>
<div>Hope you can help me with these questions,</div>
<div> </div>
<div>Thx and best regards,</div>
<div> </div>
<div>Chen</div>
<div> </div>
<div> </div>
<div>Chen C. Tchang</div>
<div>BOSCH Security systems B.V.</div>
<div>ST-CO/ENG1.3 Development</div>
<div>Kapittelweg 10,</div>
<div>4827 HG Breda</div>
<div>The Netherlands</div>
<div> </div>
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