>Number: 156327
>Category: amd64
>Synopsis: bwn driver causes 20%-50% packet loss
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Apr 11 05:10:11 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Yuri G
>Release: 8.2-RELEASE
>Organization:
ittomsk.ru
>Environment:
FreeBSD alienware.local 8.2-RELEASE FreeBSD 8.2-RELEASE #1: Mon Apr 11 08:58:21
NOVST 2011 [email protected]:/usr/obj/usr/src/sys/ALIENWARE_8_2 amd64
>Description:
Dell Vostro 3500 with Broadcom BCM4312 (as siba reports) accessing AP with
WPA-PSK encryption enabled. AP is 2m away from notebook,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 "bwn0: RX decryption attempted (old 0
keyidx 0x2)" errors at tty0. Pinging access point with 1000 packages gives 20%
to 50% packet loss.
Loading Ubuntu LiveCD at the same conditions and installing offered 802.11
Linux STA driver gives 0% packet loss.
>How-To-Repeat:
grep -E "wlan|bwn" /boot/loader.conf
wlan_load="YES"
wlan_wep_load="YES"
wlan_ccmp_load="YES"
wlan_tkip_load="YES"
wlan_amrr_load="YES"
if_bwn_load="YES"
siba_bwn_load="YES"
bwn_v4_lp_ucode_load="YES"
grep -E "wlan|bwn" /etc/rc.conf
ifconfig_wlan0="WPA DHCP"
wlans_bwn0="wlan0"
cat /etc/wpa_supplicant.conf
network={
ssid="ittomsk.ru"
psk="******"
}
ping 192.168.0.1 (AP address)
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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