Hello again, Still having problems with this quad nic. Was doing some performance tests with iperf for 24h and suddendly it stopped answering/forwarding packets on quad nic interfaces. I tried a ifconfig down, ifconfig up and still no packets. Tried to ping from the switch after clearing the arp cache and the arp entry is loaded but there is no response. With a tcpdump I can see arp packets being broadcasted but no answer entering the interface.
I have enabled all debugging flags for 'em' driver and I get this: em2: watchdog timeout -- resetting em_init: begin em_stop: begin free_transmit_structures: begin free_receive_structures: begin em_init: pba=40K em_hardware_init: begin em_initialize_transmit_unit: begin Base = 73f1000, Length = 10000 em_set_multi: begin em_initialize_receive_unit: begin Shouldn't this reset the nic and fix this ? I can reproduce the problem much faster after I messed around with if_em.h, especially this parameter: #define EM_MAX_TXD 4096 With 4096, the interface becomes unresponsive a few seconds after I start iperf tests. I have tried to apply the following patch: http://article.gmane.org/gmane.os.openbsd.tech/14134 But still the same. It seems those resets aren't being sent to the nic or something like that. How can I try to debug this ? Only way to fix it is to reboot the machine... :( Thanks, John
