Re-tested VxLAN; everything else is unchanged from v4. Changes from v4: * Rebased series to fix conflicts with vxlan/vxlan6 merge.
Changes from v3: * Fixed inverted checksum values introduced in v3. * Don't mangle zero checksums in GRE. * Clear skb->encapsulation in iptunnel_handle_offloads when not using CHECKSUM_PARTIAL, lest drivers incorrectly interpret that as a request for inner checksum offload. Changes from v2: * Added support for IPv4 GRE. * Split out 'always set up for checksum offload' into its own patch. * Removed csum_help from iptunnel_handle_offloads. * Rewrote LCO callers to only fold once. * Simplified nocheck handling. Changes from v1: * Enabled support in more encapsulation protocols. I think it now covers everything except GRE. * Wrote up some documentation covering TX checksum offload, LCO and RCO. Edward Cree (8): net: local checksum offload for encapsulation net: udp: always set up for CHECKSUM_PARTIAL offload net: enable LCO for udp_tunnel_handle_offloads() users net: vxlan: enable local checksum offload fou: enable LCO in FOU and GUE net: gre: Implement LCO for GRE over IPv4 net: ip_tunnel: remove 'csum_help' argument to iptunnel_handle_offloads Documentation/networking: add checksum-offloads.txt to explain LCO Documentation/networking/00-INDEX | 2 + Documentation/networking/checksum-offloads.txt | 119 +++++++++++++++++++++++++ drivers/net/vxlan.c | 6 +- include/linux/skbuff.h | 26 ++++++ include/net/ip_tunnels.h | 3 +- include/net/udp_tunnel.h | 2 +- net/ipv4/fou.c | 14 ++- net/ipv4/ip_gre.c | 17 +++- net/ipv4/ip_tunnel_core.c | 22 ++--- net/ipv4/ipip.c | 2 +- net/ipv4/udp.c | 28 ++---- net/ipv6/ip6_checksum.c | 23 ++--- net/ipv6/sit.c | 4 +- net/netfilter/ipvs/ip_vs_xmit.c | 6 +- 14 files changed, 197 insertions(+), 77 deletions(-) create mode 100644 Documentation/networking/checksum-offloads.txt
