Hi all, I am writing a kernel module that hooks into netfilter. netfilter_ops.hook = main_hook; netfilter_ops.pf = PF_INET; netfilter_ops.hooknum = NF_IP_PRE_ROUTING; netfilter_ops.priority = NF_IP_PRI_FIRST; nf_register_hook(&netfilter_ops); In the main_hook function, I needs to put the process to sleep and will be woken up by another process because the decision to Accept or Deny a packet depends on a process running in the user space. However, all sleeping mechanism I tried cause the kernel hang. I tried msleep, wait_event_interrupt,wait_event_interrupt_timeout,... (of course I have a process to wake up the main_hook process). I tested these sleeping machenism in different modules and they worked fine. My question is can we make the process sleep in the main_hook function without causing the kernel hang and how to do it? Thank you very much. Tung. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html