About bwn on FreeBSD 8.1R amd64

A

alphachi

OS: FreeBSD 8.1R amd64
Adapter: BCM4309
Crypto: WPA2-PSK

I have installed bwn-firmware-kmod and enabled if_bwn and bwn_v4_ucode on /boot/loader.conf.
When the system starts every time, the console shows:
Code: 
bwn0: need multicast update callback
Code: 
bwn0: RX decryption attempted (old 0 keyidx 0x1)
Although I can connect the AP, many packets lost when ping AP.
I have tried bwn_v4_lp_ucode instead of bwn_v4_ucode. It can't be used.

Thanks!
 
When I set usedma from 1 to 0 and restart, the first error was same and the second error turned to
Code: 
bwn0: RX decryption attempted (old 0 keyidx 0x2)
Still lost packets...
 
alphachi said:
When I set usedma from 1 to 0 and restart, the first error was same and the second error turned to
Code: 
bwn0: RX decryption attempted (old 0 keyidx 0x2)
Still lost packets...
Click to expand...

The message about the multicast update is just a warning, you can safely ignore that. I have no clue what the other message is supposed to mean though, keyidx is just the index into the key table (the group and unicast keys), but what's wrong about trying to decrypt a packet? hmm..

*looking at the code*

Seems like the hardware is trying to tell us that it tried 50 times to decrypt frames but failed. Does that happen with other kinds of encryption too? for example WPA1-TKIP?
 
bschmidt said:
The message about the multicast update is just a warning, you can safely ignore that. I have no clue what the other message is supposed to mean though, keyidx is just the index into the key table (the group and unicast keys), but what's wrong about trying to decrypt a packet? hmm..

*looking at the code*

Seems like the hardware is trying to tell us that it tried 50 times to decrypt frames but failed. Does that happen with other kinds of encryption too? for example WPA1-TKIP?
Click to expand...

When using no-crypto wifi (ifconfig_wlan0="inet xxx netmask xxx ssid xxx"), no errors. I think the problem is the WPA2-PSK support for bwn.
 
bschmidt said:
Also the output of # wlandebug +crypto might be helpful.
Click to expand...

When I use this command and input [cmd=]/etc/rc.d/netif start[/cmd] the output is:

Code: 
wlan0: [00:1d:0f:6a:63:30] AES-CCM replay detected <rsc 0, csc 0, keyix 0 rxkeyix 65535>
wlan0: ieee80211_crypto_newkey: cipher 3 flags 0x6 keyix 1
wlan0: ieee80211_crypto_newkey: [B]no h/w support[/B] for cipher AES-CCM, falling back to s/w
wlan0: ieee80211_crypto_setkey: AES-CCM keyix 1 flags 0x136 mac ff:ff:ff:ff:ff:ff rsc 0 tsc 0 len 16
wlan0: [00:1d:0f:6a:63:30] AES-CCM replay detected <rsc 0, csc 0, keyix 1 rxkeyix 65535>
bwn0: need multicast update callback
bwn0: need multicast update callback
bwn0: need multicast update callback
bwn0: need multicast update callback
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: AES-CCM keyix 1 flags 0x136 rsc 100 tsc 0 len 16
wlan0: _ieee80211_crypto_delkey: AES-CCM keyix 2 flags 0x136 rsc 316 tsc 0 len 16
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
Feb 17 17:29:10 Ferrari wpa_supplicant[436]: [B]Failed to disable WPA[/B] in the driver.
wlan0: _ieee80211_crypto_delkey: AES-CCM keyix 0 flags 0x133 rsc 18 tsc 22 len 16
wlan0: link state changed to DOWN
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
bwn0: need multicast update callback
ifa_add_loopback_route: insertion failed
bwn0: firmware version (rev 410 patch 2160 date 0x751a time 0x7c0a)
bwn0: need multicast update callback
Feb 17 17:29:11 Ferrari wpa_supplicant[1774]: Failed to disable WPA in the driver.
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
wlan0: _ieee80211_crypto_delkey: NONE keyix 65535 flags 0x3 rsc 0 tsc 0 len 0
bwn0: firmware version (rev 410 patch 2160 date 0x751a time 0x7c0a)
wlan0: ieee80211_new_state_locked: [B]pending INIT -> SCAN transition lost[/B]
 
Same with other types of encryption? WPA1-TKIP maybe?

Code: 
wlan0: [00:1d:0f:6a:63:30] AES-CCM replay detected <rsc 0, csc 0, keyix 1 rxkeyix 65535>
Click to expand...

That is suspicious.. smells like the hardware itself tries to decrypt the frame and net80211 tries again, hmm..
 
I have experienced exactly the same with my bwn card.

Though it works, it does seem to lose packets. Proof of this is when I attempt a ping to the router, sometimes only 20% of the packets succeed and I am only 3m from the AP.

Linux's broadcom-wl driver seems to avoid this problem. I have not tried a windows driver and NDIS.
 
bschmidt said:
Same with other types of encryption? WPA1-TKIP maybe?



That is suspicious.. smells like the hardware itself tries to decrypt the frame and net80211 tries again, hmm..
Click to expand...

I have tried all crypto options:
WEP
WPA TKIP/AES
WPA2 TKIP/AES
Still wrong...
 
kpedersen said:
I have experienced exactly the same with my bwn card.

Though it works, it does seem to lose packets. Proof of this is when I attempt a ping to the router, sometimes only 20% of the packets succeed and I am only 3m from the AP.

Linux's broadcom-wl driver seems to avoid this problem. I have not tried a windows driver and NDIS.
Click to expand...

I have tried Windows driver and NDIS, "fatal error" to system hang.

I found Broadcom 802.11 Linux STA driver:
http://www.broadcom.com/support/802.11/linux_sta.php
Can I use it on FreeBSD? If possible, how to do?
 
richardpl said:
FreeBSD 8.1 amd64 have broken NDIS, try 8.2 instead.
Click to expand...

I'm trying 8.2 now: FreeBSD 8.2-RELEASE amd64 accessing AP with WPA-PSK encryption enabled. AP is 2m away from notebook [Dell Vostro 3500 with Broadcom BCM4312 (as siba reports)], directly visible.

Loaded modules: if_bwn.ko siba_bwn.ko wlan.ko wlan_amrr.ko wlan_wep.ko wlan_ccmp.ko wlan_tkip.ko bwn_v4_lp_ucode.ko. Within first 1-2 mins after boot I get
Code: 
bwn0: RX decryption attempted (old 0 keyidx 0x2)
errors at tty0. Pinging AP gives 20% to 50% packet loss out of 1000 packages.

Loading Ubuntu LiveCD at the same conditions and installing offered 802.11 Linux STA driver gives 0% packet loss.
 
Hello,
I had the same issue, about 50% of packet loss with bwn on Broadcom BCM4312.
This is an old chip, you have to load the LP micro code (bwn_v4_lp_ucode).
Then, when you create virtual interface with ifconfig, it put you default mode on 802.11n.
But, this card doesn't not support 802.11n. You just have to switch back on 802.11b and all work good with 0% packet loss.

ifconfig wlan create wlandev bwn0 mode 11b
Click to expand...

Sorry if my english is bad. Hope that help you !
 
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