This is a subset of the larger TSO patchset with various checksum improvements. This set includes additional documentation, new appctl command "dpif-netdev/offload-show" to display interface offload support, and improvements to tracking when an updated checksum is required.
In a simple iperf test with traffic flowing from a VM, through a virtio interface and out of DPDK PF, this series resulted in an 18% improvement in TCP throughput compared to master branch (361 vs 429 Mbps). When TSO is enabled, this further improved by 10x (429 Mbps vs 4.32 Gbps). While TSO isn't introduced in this series, support for encapsulation with offload is extended. Flavio Leitner (4): Documentation: Document netdev offload. dpif-netdev: Show netdev offloading flags. userspace: Enable IP checksum offloading by default. userspace: Enable L4 csum offloading by default. Documentation/automake.mk | 1 + Documentation/topics/index.rst | 1 + Documentation/topics/netdev-offloads.rst | 95 +++++++++ lib/conntrack.c | 30 +-- lib/dp-packet.c | 39 ++++ lib/dp-packet.h | 138 ++++++++++++- lib/dpif-netdev-unixctl.man | 6 + lib/dpif-netdev.c | 62 ++++++ lib/flow.c | 38 +++- lib/ipf.c | 11 +- lib/netdev-dpdk.c | 229 +++++++++++++------- lib/netdev-dummy.c | 23 +++ lib/netdev-linux.c | 252 +++++++++++++++-------- lib/netdev-native-tnl.c | 53 ++--- lib/netdev-provider.h | 3 + lib/netdev.c | 87 +++++--- lib/odp-execute.c | 21 +- lib/packets.c | 209 +++++++++++++++---- lib/packets.h | 3 + ofproto/ofproto-dpif-upcall.c | 2 +- tests/automake.mk | 1 + tests/dpif-netdev.at | 21 ++ tests/system-userspace-offload.at | 79 +++++++ tests/system-userspace-testsuite.at | 1 + 24 files changed, 1099 insertions(+), 306 deletions(-) create mode 100644 Documentation/topics/netdev-offloads.rst create mode 100644 tests/system-userspace-offload.at -- 2.31.1 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
