David Ellingsworth wrote:
> I'd like to try and get b43legacy running in AP mode this weekend. Can
> anyone tell me what modifications to b43legacy need to be made in
> order to do so? The last time I tried, I applied the two patches by
> Larry to address beaconing issues in b43legacy without much success.
> My tests indicated that hostapd seemed capable of communicating with
> b43legacy and my 4306 rev 2 through nl80211 but that the card was
> still not producing any beacons when monitored remotely. The only sign
> of failure from hostapd is the repeated message of "MGMT (TX callback)
> fail" whenever hostapd received a probe for the ssid it configured the
> interface for. This isn't much information to go on but it points us
> in a direction to where the problem(s) may exist. Again, any help
> would be appreciated.
There may be problems that are unique to your 4306 rev 2, but b43legacy with my
patches runs as an AP just fine.
My configuration is as follows:
LAN ======= eth0 -- BCM4312/1 as AP ~~~~~~~~~~~~~~ laptop with BCM4318.
As my BCM4312/1 uses ucode5 firmware, I only have to change the ssb_tbl entries
to have it use either b43 or b43legacy.
I started with b43 driving the AP. I use hostapd v0.6.8 as the basis for the AP
and the current wireless-testing as my kernel. My hostapd.conf contains the
following:
==================================================
interface=wlan0
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
debug=0
dump_file=/tmp/hostapd.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
hw_mode=g
channel=11
beacon_int=100
dtim_period=2
max_num_sta=255
rts_threshold=2347
fragm_threshold=2346
macaddr_acl=0
ignore_broadcast_ssid=0
wme_enabled=1
wme_ac_bk_cwmin=4
wme_ac_bk_cwmax=10
wme_ac_bk_aifs=7
wme_ac_bk_txop_limit=0
wme_ac_bk_acm=0
wme_ac_be_aifs=3
wme_ac_be_cwmin=4
wme_ac_be_cwmax=10
wme_ac_be_txop_limit=0
wme_ac_be_acm=0
wme_ac_vi_aifs=2
wme_ac_vi_cwmin=3
wme_ac_vi_cwmax=4
wme_ac_vi_txop_limit=94
wme_ac_vi_acm=0
wme_ac_vo_aifs=2
wme_ac_vo_cwmin=2
wme_ac_vo_cwmax=3
wme_ac_vo_txop_limit=47
wme_ac_vo_acm=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1
wpa=1
wpa_passphrase=123456789
==================================================
I created a file dhcpd.conf, which contains
==================================================
option domain-name-servers 192.168.1.1;
default-lease-time 600;
max-lease-time 7200;
ddns-update-style none; ddns-updates off;
subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.200 192.168.0.229;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.0.255;
option routers 192.168.0.1;
}
==================================================
My script to control the AP is as follows:
==================================================
#!/bin/sh
# Script to start/stop a hostapd-based access point
#
# Symbols for needed programs
IPTABLES=/usr/sbin/iptables
IFCONFIG=/sbin/ifconfig
DHCPD=/usr/sbin/dhcpd
HOSTAPD=/usr/local/bin/hostapd
# Symbols for internal and external interfaces
NET_INT=wlan0
NET_EXT=eth0
# IP address for the AP
INT_ADDR=192.168.0.1
case "$1" in
start)
echo "Starting AP mode for $NET_INT at address $INT_ADDR"
# Disable packet forwarding
echo 0 > /proc/sys/net/ipv4/ip_forward
# Stop hostapd and dhcpd daemons
killproc hostapd
killproc dhcpd
#Set up forwarding
$IPTABLES -t nat -A POSTROUTING -o $NET_EXT -j MASQUERADE
$IPTABLES -A FORWARD -i $NET_EXT -o $NET_INT -m state \
--state RELATED,ESTABLISHED -j ACCEPT
$IPTABLES -A FORWARD -i $NET_INT -o $NET_EXT -j ACCEPT
# Enable packet forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward
# Get the internal interface in the right state
$IFCONFIG $NET_INT down
$IFCONFIG $NET_INT up
$IFCONFIG $NET_INT $INT_ADDR
# dhcpd needs to have a leases file available - create it if needed
if [ ! -f /var/lib/dhcp/db/dhcpd.leases ]; then
touch /var/lib/dhcp/db/dhcpd.leases
fi
# Bring up the DHCP server
$DHCPD -cf /root/dhcpd.conf $NET_INT
# Bring up hostapd
$HOSTAPD -B /root/hostapd.conf
;;
stop)
echo "Stopping AP mode on $NET_INT"
# Stop hostapd and dhcpd daemons
killproc hostapd
killproc dhcpd
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
;;
esac
===============================================
The first thing I found when using b43 as the AP host was that many hundreds of
"PHY transmission errors" were generated every second. I got rid of those be
eliminating the code that reports the error in drivers/net/wireless/b43/main.c.
I also made the same change to b43legacy.
Testing was done with a separate laptop that has a PCMCIA format BCM4318. The
link was kept busy using a 10-second TX test from the utility tcpperf. The
server for tcpperf is connected to my hub via a 100 Mb wired connection. The
base rate for the test is 13-14 Mb/s through my Linksys AP. Using b43 as the AP,
the rate was a little lower with a maximum rate of 12-13 Mb/s. The client's
connection is at 54 Mb/s.
After verifying that my setup would work with b43, I switched to b43legacy.
There was no difference in stability or performance. After eliminating the PHY
transmission error messages, the only thing logged on the AP host were the
10-minute DCHP renewals.
Larry
On Fri, Apr 10, 2009 at 3:30 PM, Larry Finger <[email protected]=
t> wrote:
> David Ellingsworth wrote:
>> I'd like to try and get b43legacy running in AP mode this weekend. C=
an
>> anyone tell me what modifications to b43legacy need to be made in
>> order to do so? The last time I tried, I applied the two patches by
>> Larry to address beaconing issues in b43legacy without much success.
>> My tests indicated that hostapd seemed capable of communicating with
>> b43legacy and my 4306 rev 2 through nl80211 but that the card was
>> still not producing any beacons when monitored remotely. The only si=
gn
>> of failure from hostapd is the repeated message of "MGMT (TX callbac=
k)
>> fail" whenever hostapd received a probe for the ssid it configured t=
he
>> interface for. This isn't much information to go on but it points us
>> in a direction to where the problem(s) may exist. Again, any help
>> would be appreciated.
>
> There may be problems that are unique to your 4306 rev 2, but b43lega=
cy with my
> patches runs as an AP just fine.
>
> My configuration is as follows:
>
> LAN =3D=3D=3D=3D=3D=3D=3D eth0 -- BCM4312/1 as AP ~~~~~~~~~~~~~~ lapt=
op with BCM4318.
>
> As my BCM4312/1 uses ucode5 firmware, I only have to change the ssb_t=
bl entries
> to have it use either b43 or b43legacy.
>
> I started with b43 driving the AP. I use hostapd v0.6.8 as the basis =
for the AP
> and the current wireless-testing as my kernel. =A0My hostapd.conf con=
tains the
> following:
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> interface=3Dwlan0
> driver=3Dnl80211
> logger_syslog=3D-1
> logger_syslog_level=3D2
> logger_stdout=3D-1
> logger_stdout_level=3D2
> debug=3D0
> dump_file=3D/tmp/hostapd.dump
> ctrl_interface=3D/var/run/hostapd
> ctrl_interface_group=3D0
> hw_mode=3Dg
> channel=3D11
> beacon_int=3D100
> dtim_period=3D2
> max_num_sta=3D255
> rts_threshold=3D2347
> fragm_threshold=3D2346
> macaddr_acl=3D0
> ignore_broadcast_ssid=3D0
> wme_enabled=3D1
> wme_ac_bk_cwmin=3D4
> wme_ac_bk_cwmax=3D10
> wme_ac_bk_aifs=3D7
> wme_ac_bk_txop_limit=3D0
> wme_ac_bk_acm=3D0
> wme_ac_be_aifs=3D3
> wme_ac_be_cwmin=3D4
> wme_ac_be_cwmax=3D10
> wme_ac_be_txop_limit=3D0
> wme_ac_be_acm=3D0
> wme_ac_vi_aifs=3D2
> wme_ac_vi_cwmin=3D3
> wme_ac_vi_cwmax=3D4
> wme_ac_vi_txop_limit=3D94
> wme_ac_vi_acm=3D0
> wme_ac_vo_aifs=3D2
> wme_ac_vo_cwmin=3D2
> wme_ac_vo_cwmax=3D3
> wme_ac_vo_txop_limit=3D47
> wme_ac_vo_acm=3D0
> eapol_key_index_workaround=3D0
> eap_server=3D0
> own_ip_addr=3D127.0.0.1
> wpa=3D1
> wpa_passphrase=3D123456789
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
>
> I created a file dhcpd.conf, which contains
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> option domain-name-servers 192.168.1.1;
> default-lease-time 600;
> max-lease-time 7200;
> ddns-update-style none; ddns-updates off;
> subnet 192.168.0.0 netmask 255.255.255.0 {
> =A0 =A0 =A0 =A0range 192.168.0.200 192.168.0.229;
> =A0 =A0 =A0 =A0option subnet-mask 255.255.255.0;
> =A0 =A0 =A0 =A0option broadcast-address 192.168.0.255;
> =A0 =A0 =A0 =A0option routers 192.168.0.1;
> }
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
>
> My script to control the AP is as follows:
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> #!/bin/sh
> # Script to start/stop a hostapd-based access point
> #
> # Symbols for needed programs
>
> IPTABLES=3D/usr/sbin/iptables
> IFCONFIG=3D/sbin/ifconfig
> DHCPD=3D/usr/sbin/dhcpd
> HOSTAPD=3D/usr/local/bin/hostapd
>
> # Symbols for internal and external interfaces
>
> NET_INT=3Dwlan0
> NET_EXT=3Deth0
>
> # IP address for the AP
>
> INT_ADDR=3D192.168.0.1
>
> case "$1" in
> start)
> =A0 =A0 =A0 =A0echo "Starting AP mode for $NET_INT at address $INT_AD=
DR"
>
> =A0 =A0 =A0 =A0# Disable packet forwarding
>
> =A0 =A0 =A0 =A0echo 0 > /proc/sys/net/ipv4/ip_forward
>
> =A0 =A0 =A0 =A0# Stop hostapd and dhcpd daemons
>
> =A0 =A0 =A0 =A0killproc hostapd
> =A0 =A0 =A0 =A0killproc dhcpd
>
> =A0 =A0 =A0 =A0#Set up forwarding
>
> =A0 =A0 =A0 =A0$IPTABLES -t nat -A POSTROUTING -o $NET_EXT -j MASQUER=
ADE
> =A0 =A0 =A0 =A0$IPTABLES -A FORWARD -i $NET_EXT -o $NET_INT -m state =
\
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0--state RELATED,ESTABLISHED -j ACCEPT
> =A0 =A0 =A0 =A0$IPTABLES -A FORWARD -i $NET_INT -o $NET_EXT -j ACCEPT
>
> =A0 =A0 =A0 =A0# Enable packet forwarding
>
> =A0 =A0 =A0 =A0echo 1 > /proc/sys/net/ipv4/ip_forward
>
> =A0 =A0 =A0 =A0# Get the internal interface in the right state
>
> =A0 =A0 =A0 =A0$IFCONFIG $NET_INT down
> =A0 =A0 =A0 =A0$IFCONFIG $NET_INT up
> =A0 =A0 =A0 =A0$IFCONFIG $NET_INT $INT_ADDR
>
> =A0 =A0 =A0 =A0# dhcpd needs to have a leases file available - create=
it if needed
>
> =A0 =A0 =A0 =A0if [ ! -f /var/lib/dhcp/db/dhcpd.leases ]; then
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0touch /var/lib/dhcp/db/dhcpd.leases
> =A0 =A0 =A0 =A0fi
>
> =A0 =A0 =A0 =A0# Bring up the DHCP server
>
> =A0 =A0 =A0 =A0$DHCPD -cf /root/dhcpd.conf $NET_INT
>
> =A0 =A0 =A0 =A0# Bring up hostapd
>
> =A0 =A0 =A0 =A0$HOSTAPD -B /root/hostapd.conf
> =A0 =A0 =A0 =A0;;
> stop)
> =A0 =A0 =A0 =A0echo "Stopping AP mode on $NET_INT"
>
> =A0 =A0 =A0 =A0# Stop hostapd and dhcpd daemons
> =A0 =A0 =A0 =A0killproc hostapd
> =A0 =A0 =A0 =A0killproc dhcpd
> =A0 =A0 =A0 =A0;;
> *)
> =A0 =A0 =A0 =A0echo "Usage: $0 {start|stop}"
> =A0 =A0 =A0 =A0exit 1
> =A0 =A0 =A0 =A0;;
> esac
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
> The first thing I found when using b43 as the AP host was that many h=
undreds of
> "PHY transmission errors" were generated every second. I got rid of t=
hose be
> eliminating the code that reports the error in drivers/net/wireless/b=
43/main.c.
> I also made the same change to b43legacy.
>
> Testing was done with a separate laptop that has a PCMCIA format BCM4=
318. The
> link was kept busy using a 10-second TX test from the utility tcpperf=
=2E The
> server for tcpperf is connected to my hub via a 100 Mb wired connecti=
on. The
> base rate for the test is 13-14 Mb/s through my Linksys AP. Using b43=
as the AP,
> the rate was a little lower with a maximum rate of 12-13 Mb/s. The cl=
ient's
> connection is at 54 Mb/s.
>
> After verifying that my setup would work with b43, I switched to b43l=
egacy.
> There was no difference in stability or performance. After eliminatin=
g the PHY
> transmission error messages, the only thing logged on the AP host wer=
e the
> 10-minute DCHP renewals.
>
> Larry
>
Hmm.. very interesting.
The configuration I got working was...
LAN =3D=3D=3D=3D=3D=3D br0(eth0 -- wlan0 (BCM4318)) as AP ~~~~~~~~~~ la=
ptop with
BCM4306 rev 2
=2E..but I believe the BCM4318 I have is defective.. even with a
standard AP, I haven't got it transfer any faster than about .5Mb/s.
In the reverse configuration...
LAN =3D=3D=3D=3D=3D=3D br0(eth0 -- wlan0 (BCM4306 rev 2)) as AP ~~~~~~~=
~~~ server
with BCM4318
=2E..I was unable to observe any beacons coming from the AP.
Like you said, the issue might be related to my particular card since
you were successful at getting your card to send beacons. I'll
experiment with your patches to see if I can't determine where they
seem to fail with my card. Hopefully, some well placed debug messages
will help locate the problem.
Ideally, my server will eventually be the AP but for now I need
something my BCM4318 can try to connect to. Thus when a Linksys tech
isn't capable of producing the speeds claimed by the 4318 card I can
get it RMA'd for a new device.
Regards,
David Ellingsworth
David Ellingsworth wrote:
> I wanted to report that I've finally been successful at getting
> b43legacy to beacon properly. Originally, I had configured hostapd to
> use channel 1. After reading the list of bugs for the bwi driver,
> shown here: http://leaf.dragonflybsd.org/cgi/web-man?command=bwi , I
> had the inclination to try channel 6. It appears b43legacy might have
> the same bugs as the bwi driver as I immediately began seeing beacons
> once I started using channel 6.
I finally got a chance to test my BCM4306/2 that uses b43legacy. It works just
fine as an AP using channel 1. At least on my device, it does not have the
problem of the bwi driver.
Larry
David Ellingsworth wrote:
> I wanted to report that I've finally been successful at getting
> b43legacy to beacon properly. Originally, I had configured hostapd to
> use channel 1. After reading the list of bugs for the bwi driver,
> shown here: http://leaf.dragonflybsd.org/cgi/web-man?command=bwi , I
> had the inclination to try channel 6. It appears b43legacy might have
> the same bugs as the bwi driver as I immediately began seeing beacons
> once I started using channel 6.
I just tested and my 4311/1 running b43legacy sends beacons on channel 1. The
problem is likely in the initialization of the 4306 units. That is something I
will be investigating.
As far as I can tell, it should be OK to submit the b43legacy beacon patches.
Larry
I wanted to report that I've finally been successful at getting
b43legacy to beacon properly. Originally, I had configured hostapd to
use channel 1. After reading the list of bugs for the bwi driver,
shown here: http://leaf.dragonflybsd.org/cgi/web-man?command=bwi , I
had the inclination to try channel 6. It appears b43legacy might have
the same bugs as the bwi driver as I immediately began seeing beacons
once I started using channel 6.
Regards,
David Ellingsworth
On Sat, Apr 11, 2009 at 11:35 AM, Larry Finger
<[email protected]> wrote:
> David Ellingsworth wrote:
>> I wanted to report that I've finally been successful at getting
>> b43legacy to beacon properly. Originally, I had configured hostapd to
>> use channel 1. After reading the list of bugs for the bwi driver,
>> shown here: http://leaf.dragonflybsd.org/cgi/web-man?command=bwi , I
>> had the inclination to try channel 6. It appears b43legacy might have
>> the same bugs as the bwi driver as I immediately began seeing beacons
>> once I started using channel 6.
>
> I just tested and my 4311/1 running b43legacy sends beacons on channel 1. The
> problem is likely in the initialization of the 4306 units. That is something I
> will be investigating.
>
> As far as I can tell, it should be OK to submit the b43legacy beacon patches.
>
Agreed, they have my ACK.
Regards,
David Ellingsworth