tree 5a29556ab856c6b7773b7387d5205cf7537f8556
parent c0b558e5a393b77d2fe53335b5e07ca0e77178f8
author William Tu <u9012063@gmail.com> 1471632944 -0700
committer David S. Miller <davem@davemloft.net> 1471671764 -0700

samples/bpf: Add tunnel set/get tests.

The patch creates sample code exercising bpf_skb_{set,get}_tunnel_key,
and bpf_skb_{set,get}_tunnel_opt for GRE, VXLAN, and GENEVE.  A native
tunnel device is created in a namespace to interact with a lwtunnel
device out of the namespace, with metadata enabled.  The bpf_skb_set_*
program is attached to tc egress and bpf_skb_get_* is attached to egress
qdisc.  A ping between two tunnels is used to verify correctness and
the result of bpf_skb_get_* printed by bpf_trace_printk.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>