BPDU generation problem - Further clarifications

Hi Stephan,

After further analysis I find myself pretty clear now. With STP turned off BPDUs are getting generated but not sent on the ports. So there is no problem of affecting the topology of the entire network. However..

Since STP is disabled, br->stp_enabled = 0. The br_dev_open() function always does a br_stp_enable_bridge(). Which does a br_stp_enable_port() on each of the ports. Which in turn does a br_port_state_selection(). Which finds out STP is disabled and does nothing.

Also whenever the hello timer fires it does a br_config_bpdu_generation(). Which does a br_transmit_config() on each of the ports. Which calls the br_send_config_bpdu() function. This function generates the entire BPDU frame & gives it to the br_send_bpdu(). Which finds the STP is disabled & discards the packets.

Note: The br_config_bpdu_generation() is also called by the br_stp_enable_bridge().

I think there is a better way of doing all this..

Regards,
Kishore

Hi Stephan,

But is it not a serious bug cause it is going to the affect the topology of the entire network on to which the bridge is connected..

Regards,
Kishore

Probably just a stupid bug.