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[lwip-devel] [patch #9299] SNTP round-trip delay compensation
From: |
Daniel Elstner |
Subject: |
[lwip-devel] [patch #9299] SNTP round-trip delay compensation |
Date: |
Fri, 24 Mar 2017 08:05:09 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/56.0.2924.76 Chrome/56.0.2924.76 Safari/537.36 |
URL:
<http://savannah.nongnu.org/patch/?9299>
Summary: SNTP round-trip delay compensation
Project: lwIP - A Lightweight TCP/IP stack
Submitted by: danielk
Submitted on: Fri 24 Mar 2017 01:05:07 PM CET
Category: apps
Priority: 5 - Normal
Status: None
Privacy: Public
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Planned Release: None
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Details:
The attached patch implements the calculation for SNTP round-trip delay
compensation as defined in RFC 4330. It would be great if this could go into
lwIP proper. I also refactored the NTP timestamp handling a bit to keep things
manageable.
One little catch: The compensation requires compiler support for 64-bit
arithmetic. Since round-trip compensation is disabled by default, I hope this
is acceptable. However, 64 bit integers are not covered by arch.h, so I
defined these types locally for now. But it might be better to put the
typedefs into arch.h as optional feature.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Fri 24 Mar 2017 01:05:07 PM CET Name:
0001-SNTP-Implement-round-trip-delay-compensation.patch Size: 14kB By:
danielk
SNTP round-trip compensation, take 1
<http://savannah.nongnu.org/patch/download.php?file_id=40113>
_______________________________________________________
Reply to this item at:
<http://savannah.nongnu.org/patch/?9299>
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- [lwip-devel] [patch #9299] SNTP round-trip delay compensation,
Daniel Elstner <=