On 2/13/19 12:53 PM, Peter Oskolkov wrote: > This patchset implements BPF_LWT_ENCAP_IP mode in bpf_lwt_push_encap > BPF helper. It enables BPF programs (specifically, BPF_PROG_TYPE_LWT_IN > and BPF_PROG_TYPE_LWT_XMIT prog types) to add IP encapsulation headers > to packets (e.g. IP/GRE, GUE, IPIP). > > This is useful when thousands of different short-lived flows should be > encapped, each with different and dynamically determined destination. > Although lwtunnels can be used in some of these scenarios, the ability > to dynamically generate encap headers adds more flexibility, e.g. > when routing depends on the state of the host (reflected in global bpf > maps). >
For the set: Reviewed-by: David Ahern <dsah...@gmail.com>
