Alexei Starovoitov wrote: > Add program extension tests that build on top of fexit_bpf2bpf tests. > Replace three global functions in previously loaded test_pkt_access.c program > with three new implementations: > int get_skb_len(struct __sk_buff *skb); > int get_constant(long val); > int get_skb_ifindex(int val, struct __sk_buff *skb, int var); > New function return the same results as original only if arguments match. > > new_get_skb_ifindex() demonstrates that 'skb' argument doesn't have to be first > and only argument of BPF program. All normal skb based accesses are available. > > Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx> > --- > .../selftests/bpf/prog_tests/fexit_bpf2bpf.c | 20 ++++++- > .../selftests/bpf/progs/fexit_bpf2bpf.c | 57 +++++++++++++++++++ > .../selftests/bpf/progs/test_pkt_access.c | 8 ++- > 3 files changed, 83 insertions(+), 2 deletions(-) Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>
