I have seen a paper says that "Atheros hardware allows the creation of different types of hardware queues, one of which is a beacon queue. A beacon queue is initialized with a beacon interval (bintval)value that specifies the duration at which a periodic hardware interrupt (HAL_INT_SWBA) is generated. The default handler for this interrupt invokes a beacon generating function in the MadWiFi driver code."
Now,I want to override or modify the madwifi's default interrupt handler to handle the HAL_INT_SWBA interrupt(which is generated after a beacon has been generated,i think).Who can help me that where should i do with in the OpenWRT,thx.

(Last edited by MyAngelLYC on 8 Nov 2013, 08:23)

Now,I have finished this problem.In the ath9k driver,there is a interrupt service routine which can handle this problem.It's location is "./build_dir/linux-ar71xx_generic/compat-wireless-2013-06-27/drivers/net/wireless/ath/ath9k/main.c",there is a interrupt handler ath_isr().In this function,there is "if(status & ATH9K_INT_SWBA)".Under this section,is the handler.But now,I have a question,where i can change the beacon interval?

go to modifiy the hostapd source code at build_dir/tar_xxxx/hostapd/ or wpad_full/xxxx

In my system, there is build_dir/target-mips_r2_uClibc-0.9.33.2/hostapd-wpad-mini/hostapd-20130405/. But I don't know where to modify in this dictionary.

(Last edited by MyAngelLYC on 3 Jan 2014, 04:08)