ath5k problem with multiple NICs

Hi all,

I have a problem with the athk5 driver and this scheme. Description of scheme and the problem is as follows:

Specifications

Linux Kernel: Linux voyage 3.0.0-voyage

Ath5k modules:
filename:       /lib/modules/3.0.0-voyage/kernel/drivers/net/wireless/ath/ath5k/ath5k.ko
license:        Dual BSD/GPL
description:    Support for 5xxx series of Atheros 802.11 wireless LAN cards.

Modules ath5k
ath5k, ath, mac80211, cfg80211             

NIC models: CM9-GP
Chipset: Atheros AR5213A
Standard: 805.11a/b/g

Scheme:

I use 2 ALIX boards, each of them have two NICs installed. The scheme is as follows:

ALIX_0                         ALIX1             ESSID     CHANNEL
NIC_1: 192.168.0.1        NIC_1: 192.168.0.2      ESSID1      1
NIC_2: 192.168.10.1       NIC_2: 192.168.10.2     ESSID2      11

Two links linked up using infraestructure, mesh or ad-hoc mode.

I insert traffic between NIC_1(ALIX0) and NIC_1(ALIX1) in ESSID1, and I get a 5Mbps throughput, I did the same test with the link ESSID 2 and results were similar.

The problem is when I try to send data simultaneously using both two links I only get a 5Mbps throughput, this means I only get a single link throughput even when the traffic is sent using both channels.

I did a similar testing with madwifi driver, and I am able to send data simultanously, but I need to use ath5k driver, because bonding implementation is much better for wireless networks.

Could you please help me with this?

Many thanks in advance.

Kind regards,

Geovana