The 82599 datasheet and specification update says _Header Splitting mode might cause unpredictable behavior and should not be used with the 82599._
Unfortunately the specification update does not give any insight whatsoever as to the cause of the bug and if there are any cases where it can be used. The kicker is that the 82599 seems to be ubiquitous among blade vendors. All offer the 82599 in their intel 10Gb adapter or mezzanine card of choice. I am having a hard time finding any that have the 82598 or the x540 (which has the bug fixed) as an option. Since our specific use-case of using the header-splitting if for targeted traffic: using an RSS hardware filter to send specific traffic (eth/ip/udp port xyz) to a queue and only that traffic have header splitting performed on it. Since the traffic is of a known type (and a simple encap?) is header-splitting safe to use? So that is the motivation of this inquiry; maybe we can in fact use the 82599 if we understood the nature of the header-split bug. Maybe there are some cases where it does work... Does anyone have any insight in to the nature of this hardware bug? Thanks, Gabriel Black 303.416.9766 ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
