samples/bpf: Add tunnel set/get tests.

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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>

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William Tu 2016-08-19 11:55:44 -07:00 • committed by David S. Miller

parent c0b558e5a3

commit 6afb1e28b8

4 changed files with 327 additions and 0 deletions

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1

samples/bpf/Makefile

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8

samples/bpf/bpf_helpers.h

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191

samples/bpf/tcbpf2_kern.c

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127

samples/bpf/test_tunnel_bpf.sh Executable file

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