(usagi-users 03350) IPSec statistics?

Hello,

I am using Linux 2.6, Kernel version 2.6.5-7, with ipsec-tools-0.3.3. 

I would like to know if there are any statistics available from the IPSec
portions of the kernel. For example:
- Number of packets rejected due to policy mis-matches (total and
per-policy)
- Number of packets rejected due to invalid SPI 
- Number of ESP/AH packets processed 

Are such statistics maintained in /proc? If not, are there any plans to add
them?

Thanks,

-Amruth