Re: [RFC] net : add tx timestamp to packet mmap.
From: Richard Cochran <richardcochran@gmail.com>
Date: 2012-12-13 13:29:29
On Wed, Dec 12, 2012 at 04:29:25PM +0100, Paul Chavent wrote:
This patch allow to generate tx timestamps of packets sent by the packet mmap interface. Actually, you can't get tx timestamps with the sample code below. I wonder if my current implementation is good. And if not, how should i get the timestamps ?
In order for time stamps to appear, somebody has to call skb_tx_timestamp() ...
quoted hunk ↗ jump to hunk
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index e639645..948748b 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c@@ -1857,6 +1857,10 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb, void *data; int err; + err = sock_tx_timestamp(&po->sk, &skb_shinfo(skb)->tx_flags);
and this call is only setting some flags. HTH, Richard