Extending LOG target to display pid

[Nick Hay <nickjhay@hotmail.com>]

What I hoped to be an easy hack quickly ran into problems.  I planned to 
add an extra printk() in dump_packet() to output the pid, and perhaps 
the program executable number.  Since the owner module had access to the 
pid, I assumed there would be some way to get this information to the 
LOG module.  After a frustrating search through source code and 
documentation, I have the following questions:

1. For the owner module, where/how is the struct ipt_owner_info filled 
in for each packet?  In general, how is the ipt_entry_match/target data 
field filled in?

2. Any ideas on how I can get the pid of a local packet's creator in the 
log module?  I couldn't find any structures connected to the sk_buff 
that might contain it, and couldn't think of where the data would 
originally come from.

Actually... would current->pid work?

I'm still curious about question 1, though!

-- Nick Hay