Re: Wireless adapter associated, rx ok, tx ko

Jeremie Le Hen wrote:
On Tue, Feb 26, 2008 at 11:56:52PM +0100, Jeremie Le Hen wrote:
Hi list,

I'm running -CURRENT from 2007/02/22.

I'm currently on holidays. There is a wireless network protected with
WEP. I can successfully associate to the AP, but dhclient(8) won't
succeed in getting an IP address. I also tried to configure an IP
address manually and ping another computer on the network without
success. Nonetheless, I can see the traffic from other computers with
tcpdump(8).

This behaviour occurs with if_ral and if_wi.
I tried with a Linux live CD (from which I'm writing this e-mail), and
it works.

More information coming. You will find my dmesg attached (not verbose).
Note there are a couple of LOR, especially one related to ral0.

Here are the modules I loaded (either from loader(8) or manually):
% Id Refs Address Size Name
% 1 78 0xc0400000 4eddd8 kernel (/boot/kernel/kernel)
% 2 1 0xc08f5000 6d434 acpi.ko (/boot/kernel/acpi.ko)
% 3 1 0xc0963000 6780 cardbus.ko (/boot/kernel/cardbus.ko)
% 4 3 0xc096a000 2b40 exca.ko (/boot/kernel/exca.ko)
% 5 1 0xc096d000 dd6c cbb.ko (/boot/kernel/cbb.ko)
% 6 8 0xc097b000 2e7d8 wlan.ko (/boot/kernel/wlan.ko)
% 7 1 0xc09aa000 5838 wlan_scan_sta.ko (/boot/kernel/wlan_scan_sta.ko)
% 8 1 0xc09b0000 495c wlan_tkip.ko (/boot/kernel/wlan_tkip.ko)
% 9 1 0xc09b5000 3204 wlan_wep.ko (/boot/kernel/wlan_wep.ko)
% 10 1 0xc3d46000 24000 linux.ko (/boot/kernel/linux.ko)
% 11 1 0xc3f83000 8000 umass.ko (/boot/kernel/umass.ko)
% 12 1 0xc3f8b000 22000 usb.ko (/boot/kernel/usb.ko)
% 13 1 0xc4046000 19000 if_ral.ko (/boot/kernel/if_ral.ko)
% 14 1 0xc4076000 f000 if_iwi.ko (/boot/kernel/if_iwi.ko)
% 15 1 0xc4085000 30000 iwi_bss.ko (/boot/kernel/iwi_bss.ko)
% 16 1 0xc40b5000 1d000 if_wi.ko (/boot/kernel/if_wi.ko)
% 17 1 0xc40d2000 d000 pccard.ko (/boot/kernel/pccard.ko)

I attached a "screenshot" when dhclient(8) is run for wi0, with
net.wlan.0.debug=0xffffffff.

Likewise, there is the debug output for ral0. Although the outcome is
the same -- no packet seems to be sent -- debug messages are very
different.

jarjarbinks:~:140# ifconfig wi0
wi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:02:2d:4b:b9:20
media: IEEE 802.11 Wireless Ethernet autoselect (DS/2Mbps)
status: associated
ssid XXXXXXXXXX channel 10 (2457 Mhz 11b) bssid XX:XX:XX:XX:XX:XX
stationname "FreeBSD WaveLAN/IEEE node"
authmode OPEN privacy MIXED deftxkey UNDEF wepkey 1:104-bit bmiss 7
scanvalid 60 bintval 0
jarjarbinks:~:141# sysctl net.wlan.0.debug=0xffffffff
net.wlan.0.debug: 0 -> 2147483647
jarjarbinks:~:142#
jarjarbinks:~:142#
jarjarbinks:~:142# dhclient wi0
wi0: ieee80211_newstate: RUN -> INIT
wi0: ieee80211_ref_node (ieee80211_send_mgmt:1574) 0xc4b28000<XX:XX:XX:XX:XX:XX> refcnt 3
wi0: [XX:XX:XX:XX:XX:XX] send station disassociate (reason 8)
[XX:XX:XX:XX:XX:XX] send disassoc on channel 10
wi0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wi0: ieee80211_node_table_reset station table
wi0: ieee80211_free_allnodes_locked: free all nodes in station table
wi0: node_reclaim: remove 0xc4b28000<XX:XX:XX:XX:XX:XX> from station table, refc
nt 1
wi0: ieee80211_setup_node 0xc4bb9000<00:02:2d:4b:b9:20> in station table
wi0: _ieee80211_free_node 0xc4b28000<XX:XX:XX:XX:XX:XX> in <gone> table
wi0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
DHCPDISCOVER on wi0 to 255.255.255.255 port 67 interval 5
wi0: ieee80211_newstate: INIT -> RUN
wi0: ieee80211_newstate: invalid transition
wi0: [ff:ff:ff:ff:ff:ff] no default transmit key (ieee80211_encap) deftxkey 65535
DHCPDISCOVER on wi0 to 255.255.255.255 port 67 interval 11
wi0: [ff:ff:ff:ff:ff:ff] no default transmit key (ieee80211_encap) deftxkey 65535
DHCPDISCOVER on wi0 to 255.255.255.255 port 67 interval 12
wi0: [ff:ff:ff:ff:ff:ff] no default transmit key (ieee80211_encap) deftxkey 65535


(Note that setting deftxkey for wi0, does not change anything.)
I don't believe you that setting the key doesn't change anything. Your outbound traffic is being dropped because there is no tx keyid specified.

I note the ral log likewise says you have no deftxkey setup.

wlanstats will show you how many frames are being dropped because the system doesn't know what key to use to encrypt traffic.

Sam

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