[driver-discuss] plumbing error of my NIC driver on reboot

[Somnath kotur]

Hi,
     In order to get my driver to work on reboot, i copied it to /kernel/drv/amd64. The driver on reboot seems to load fine ,up until a point where it tries to plumb(?) ...ie it enters my driver's xxx_start() entry point and spits out this error msg below:

Problem  1:
ct 14 12:39:57 opensolaris be2net: [ID 498891 kern.warning] WARNING: benet_start linkstatus=1
Oct 14 12:39:57 opensolaris ip: [ID 926743 kern.error] be2net0: DL_BIND_REQ failed: DL_SYSERR (errno 6)
Oct 14 12:39:57 opensolaris ip: [ID 738341 kern.error] be2net0: DL_UNBIND_REQ failed: DL_OUTSTATE

where benet_start is my <driver_start> entry point and be2net is my driver name

Soon after this the driver's detach entry pt gets called and driver gets unloaded!! (No apparent reason why detach was triggered), Any idea why this could be so?  -------- Problem  2

After a gap of say 10 mins , my driver gets loaded again(automatically) ,albeit this time succesfully and i am able to manually plumb the driver -------------------------- Problem/Situation 3: 
Is this expected behaviour?


Problem Scenario without reboot:
This is when i copy my driver to /tmp and create a symbolic link to it (as is the suggested practice during initial driver development) . On add_drv of my driver , around 75% of the time the command ' ifconfig be2net0 plumb' fails the 1st time around with the same DL_BIND_REQ failure as above.
 
 However it invariably succeeds on my 2nd / 3rd/.... attempt

Could somebody pls tell me what could be going wrong here?

Thanks
Som