I have TP=Link w8961 as a home modem router
ip 192.168.1.1

and carambola with upgrade OpenWrt Barrier Breaker r33735

my network
onfig interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config interface 'lan'
option ifname 'eth0'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.77'
option netmask '255.255.255.0'
option gateway '192.168.1.1'
option dns '192.168.1.1'
option dns '8.8.8.8'

config interface 'wlan'
option proto 'dhcp'

my wireless
config wifi-device 'radio0'
option type 'mac80211'
option channel '11'
option macaddr 'c4:93:00:00:0c:70'
option hwmode '11ng'
option txpower '20'
option htmode 'HT20'
list ht_capab 'GF'
list ht_capab 'SHORT-GI-20'
list ht_capab 'SHORT-GI-40'
list ht_capab 'RX-STBC1'
option country 'KZ'

config wifi-iface
option network 'wlan'
option device 'radio0'
option ssid 'TPLINK'
option encryption 'psk'
option key '********'
option mode 'sta'


/etc/config$ ifconfig
br-lan Link encap:Ethernet HWaddr C4:93:00:00:0C:6E
inet addr:192.168.1.77 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:857 errors:0 dropped:0 overruns:0 frame:0
TX packets:1027 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:94464 (92.2 KiB) TX bytes:188350 (183.9 KiB)

eth0 Link encap:Ethernet HWaddr C4:93:00:00:0C:6E
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:857 errors:0 dropped:0 overruns:0 frame:0
TX packets:1027 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:106462 (103.9 KiB) TX bytes:192628 (188.1 KiB)
Interrupt:5

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:428 (428.0 B) TX bytes:428 (428.0 B)

wlan0 Link encap:Ethernet HWaddr C4:93:00:00:0C:70
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:104 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:0 (0.0 B) TX bytes:43680 (42.6 KiB)

/etc/config$ iwconf
-ash: iwconf: not found

I have no ping when disconnect Lan cable from carambola
where my error?

Use iwconfig instead of iwconf.

As far as your outputs show, it seems like you board simply got to WiFi connection (a lot of TX packages, but no RX).
Check PW and settings of your router ( MAC filter ? ) and read the wiki pages again about a proper WiFi config.

/$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"TPLINK"
Mode:Managed Frequency:2.462 GHz Access Point: 90:F6:52:D1:00:1B
Bit Rate=1 Mb/s Tx-Power=20 dBm
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-29 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1 Missed beacon:0

my new
/etc/config$ ifconfig
br-lan Link encap:Ethernet HWaddr C4:93:00:00:0C:6E
inet addr:192.168.1.77 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4478 errors:0 dropped:391 overruns:0 frame:0
TX packets:4039 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:596685 (582.7 KiB) TX bytes:1362724 (1.2 MiB)

eth0 Link encap:Ethernet HWaddr C4:93:00:00:0C:6E
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4532 errors:0 dropped:0 overruns:0 frame:0
TX packets:4039 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:663174 (647.6 KiB) TX bytes:1375311 (1.3 MiB)
Interrupt:5

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1911 (1.8 KiB) TX bytes:1911 (1.8 KiB)

wlan0 Link encap:Ethernet HWaddr C4:93:00:00:0C:70
inet addr:192.168.1.164 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:96 errors:0 dropped:56 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:6785 (6.6 KiB) TX bytes:1279 (1.2 KiB)

/etc/config$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

br-lan no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"TPLINK"
Mode:Managed Frequency:2.462 GHz Access Point: 90:F6:52:D1:00:1B
Bit Rate=1 Mb/s Tx-Power=20 dBm
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-25 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:0 Missed beacon:0

and I have no ping 192.168.1.77 when desconnect lan cable
what my next step? help!