netdev - Re: skb->timestamp == 0.000000 ?

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Message-ID: <1321971040.2474.9.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Tue, 22 Nov 2011 15:10:40 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Felipe Dias <felipediassss@...il.com>
Cc:	Benjamin Poirier <benjamin.poirier@...il.com>,
	netdev@...r.kernel.org
Subject: Re: skb->timestamp == 0.000000 ?

Le mardi 22 novembre 2011 à 11:04 -0300, Felipe Dias a écrit :

> who is responsible for enabling? Would not it be the driver?
> 
> Some packets (icmp) appear timestamp other packages do not appear.
> 
> I'm confused, in my mind, after the registration of the "protocol
> handler" (with dev_add_pack) any skb should have the timestamp.
> 

This is not the trigger for timestamps.

You need to call setsockopt(SO_TIMESTAMP or SO_TIMESTAMPNS) on at least
one socket.



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