Re: time stamps of skb packets in NF_HOOKS callbacks

On Thu, Aug 17, 2006 at 05:37:15PM +0300, John Que (qwejohn@gmail.com) wrote:

Hello,
I am using NF_HOOKS (a "PRE_ROUTING" hook).
When I try to print the time stamps (sec and usec) of skb packets
which I recieve
in the hook callback I get 0. Other skb fileds are correct.
According to my understanding, the time stamp should be updated
when the packet is received. Isn't it so ? Any idea why am I getting
"0" for tstamp fields (tstamp is a field in sk_buff and is  an intance
of skb_timeval).

Timestamps are disabled by default, if you have sockets which enable
SO_TIMESTAMP or netfilter queue target and other agents which can enable
it, you will see updated values in skb->tstamp.

-- 
	Evgeniy Polyakov