tree 8022f36b508cbdec23a1f9c7a6f11c59f6560edb
parent f4f5bee471c298eb29b4ecd82fdfdcc8e50c7899
author Jiri Olsa <jolsa@kernel.org> 1600093912 +0200
committer Toke Høiland-Jørgensen <toke@redhat.com> 1601382842 +0200

selftests/bpf: Adding test for arg dereference in extension trace

Adding test that setup following program:

  SEC("classifier/test_pkt_md_access")
  int test_pkt_md_access(struct __sk_buff *skb)

with its extension:

  SEC("freplace/test_pkt_md_access")
  int test_pkt_md_access_new(struct __sk_buff *skb)

and tracing that extension with:

  SEC("fentry/test_pkt_md_access_new")
  int BPF_PROG(fentry, struct sk_buff *skb)

The test verifies that the tracing program can
dereference skb argument properly.

Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>