On Tue, Apr 26, 2016 at 10:26 PM, YeYin <ey...@qq.com> wrote: > Hi, all, > > > By default, ixgbe driver disable UFO feature: > > > # ethtool -i eth1 > driver: ixgbe > version: 4.1.1 > firmware-version: 0x8000039c, 14.0.12 > bus-info: 0000:01:00.1 > supports-statistics: yes > supports-test: yes > supports-eeprom-access: yes > supports-register-dump: yes > supports-priv-flags: no > > > # ethtool -k eth1|grep udp > udp-fragmentation-offload: off [fixed] > tx-udp_tnl-segmentation: on > > > > However, from 82599 datasheet I read some notes: > > > "Similar to TCP segmentation, the 82599 also provides a capability to offload > UDP segmentation. Note that current UDP segmentation offload is not supported > by any standard OS." > > > Can I enable UFO for ixgbe driver? > > > Thanks, > Ye
What the 82599 supports is a UDP segmentation offload. So instead of fragmenting a frame like you would do in an UDP Fragmentation Offload what would occur is that the UDP header would be replicated and updated for each frame. Since the kernel doesn't support segmentation of UDP frames in this way the driver doesn't export the feature since it would be a new type of segmentation offload. - Alex ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
