From: Octavian Purdila <opurdila@ixiacom.com>
To: Patrick Ohly <patrick.ohly@intel.com>
Cc: netdev@vger.kernel.org, Stephen Hemminger <shemminger@vyatta.com>,
Ingo Oeser <netdev@axxeo.de>, Andi Kleen <ak@linux.intel.com>,
John Ronciak <john.ronciak@intel.com>,
Eric Dumazet <dada1@cosmosbay.com>,
Oliver Hartkopp <oliver@hartkopp.net>
Subject: Re: [RFC PATCH 04/13] net: implement generic SOF_TIMESTAMPING_TX_* support
Date: Wed, 12 Nov 2008 01:15:08 +0200 [thread overview]
Message-ID: <200811120115.09330.opurdila@ixiacom.com> (raw)
In-Reply-To: <1226415417.31699.3.camel@ecld0pohly>
From: Patrick Ohly <patrick.ohly@intel.com>
Date: Fri, 24 Oct 2008 15:41:34 +0200
> + if (dev) {
> + skb_hwtstamp_set(skb,
> + dev->hwtstamp_raw2sys ?
> + dev->hwtstamp_raw2sys(dev, stamp) :
> + stamp);
> + } else {
> + skb->tstamp = stamp;
> +#if BITS_PER_LONG != 64 && !defined(CONFIG_KTIME_SCALAR)
> + skb->tstamp.tv.sec = skb->tstamp.tv.sec / 2 * 2;
> +#else
> + skb->tstamp.tv64 = skb->tstamp.tv64 / 2 * 2;
> +#endif
> + }
> +
I think the addition of the following bits will be of use to applications:
serr = SKB_EXT_ERR(skb);
serr->ee.ee_origin = SO_EE_ORIGIN_TXTSTAMP;
serr->ee.ee_mac = skb->mac.raw - skb->data;
serr->ee.ee_network = skb->nh.raw - skb->data;
serr->ee.ee_transport = skb->h.raw - skb->data;
For example, for UDP PTP we don't have to manually skip the ethernet (and take
into account VLANs) and IP headers.
Thanks,
tavi
next prev parent reply other threads:[~2008-11-11 23:19 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-11 14:44 [RFC PATCH 00/13] hardware time stamping + igb example implementation Patrick Ohly
2008-10-22 8:17 ` [RFC PATCH 02/13] extended semantic of sk_buff::tstamp: lowest bit marks hardware time stamps Patrick Ohly
2008-11-12 7:41 ` Eric Dumazet
2008-11-12 8:09 ` Patrick Ohly
2008-11-12 10:09 ` David Miller
2008-11-12 9:58 ` David Miller
2008-11-19 12:50 ` Patrick Ohly
2008-10-22 12:46 ` [RFC PATCH 01/13] put_cmsg_compat + SO_TIMESTAMP[NS]: use same name for value as caller Patrick Ohly
2008-11-12 9:55 ` David Miller
2008-10-22 15:01 ` [RFC PATCH 03/13] user space API for time stamping of incoming and outgoing packets Patrick Ohly
2008-11-12 10:02 ` David Miller
2008-10-24 13:41 ` [RFC PATCH 04/13] net: implement generic SOF_TIMESTAMPING_TX_* support Patrick Ohly
2008-11-11 23:15 ` Octavian Purdila [this message]
2008-11-12 8:38 ` Patrick Ohly
2008-10-24 13:49 ` [RFC PATCH 05/13] ip: support for TX timestamps on UDP and RAW sockets Patrick Ohly
2008-11-12 9:59 ` David Miller
2008-10-29 14:48 ` [RFC PATCH 06/13] workaround: detect time stamp when command flags are expected Patrick Ohly
2008-11-12 10:00 ` David Miller
2008-10-31 11:43 ` [RFC PATCH 07/13] net: add SIOCSHWTSTAMP - hardware time stamping of packets Patrick Ohly
2008-10-31 12:21 ` [RFC PATCH 08/13] igb: stub support for SIOCSHWTSTAMP Patrick Ohly
2008-11-04 9:23 ` [RFC PATCH 09/13] clocksource: allow usage independent of timekeeping.c Patrick Ohly
2008-11-12 10:04 ` David Miller
2008-11-04 9:27 ` [RFC PATCH 10/13] igb: infrastructure for hardware time stamping Patrick Ohly
2008-11-05 9:58 ` [RFC PATCH 11/13] time sync: generic infrastructure to map between time stamps generated by a clock source and system time Patrick Ohly
2008-11-11 16:18 ` Andi Kleen
2008-11-12 8:01 ` Patrick Ohly
2008-11-12 10:08 ` David Miller
2008-11-12 16:14 ` Patrick Ohly
2008-11-12 16:28 ` Eric Dumazet
2008-11-12 10:05 ` David Miller
2008-11-06 11:13 ` [RFC PATCH 12/13] igb: use clocksync to implement hardware time stamping Patrick Ohly
2008-11-07 9:26 ` [RFC PATCH 13/13] skbuff: optionally store hardware time stamps in new field Patrick Ohly
2008-11-12 16:06 ` [RFC PATCH 00/13] hardware time stamping + igb example implementation Andi Kleen
2008-11-12 16:25 ` Patrick Ohly
2008-11-12 18:44 ` Oliver Hartkopp
2008-11-12 19:22 ` Eric Dumazet
2008-11-12 20:23 ` Andi Kleen
2008-11-12 20:23 ` Andi Kleen
2008-11-12 20:56 ` Eric Dumazet
2008-11-12 21:34 ` Andi Kleen
2008-11-12 22:26 ` Oliver Hartkopp
2008-11-13 15:53 ` Ohly, Patrick
2008-11-13 6:15 ` Oliver Hartkopp
2008-11-13 6:29 ` Eric Dumazet
2008-11-13 16:05 ` Ohly, Patrick
2008-11-16 8:15 ` Andrew Shewmaker
2008-11-12 22:17 ` David Miller
2008-11-19 12:39 ` Patrick Ohly
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