The test_pkt_access.o is used by multiple tests. Fix its section name so that
program type can be automatically detected by libbpf and make it call another
subprogram with skb argument.
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
---
tools/testing/selftests/bpf/progs/test_pkt_access.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c
index 7cf42d14103f..9aaee1400c1e 100644
--- a/tools/testing/selftests/bpf/progs/test_pkt_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c
@@ -17,8 +17,14 @@
#define barrier() __asm__ __volatile__("": : :"memory")
int _version SEC("version") = 1;
-SEC("test1")
-int process(struct __sk_buff *skb)
+static __attribute__ ((noinline))
+int test_pkt_access_subprog(volatile struct __sk_buff *skb)
+{
+ return skb->len * 2;
+}
+
+SEC("classifier/test_pkt_access")
+int test_pkt_access(struct __sk_buff *skb)
{
void *data_end = (void *)(long)skb->data_end;
void *data = (void *)(long)skb->data;
@@ -48,6 +54,8 @@ int process(struct __sk_buff *skb)
tcp = (struct tcphdr *)((void *)(ip6h) + ihl_len);
}
+ if (test_pkt_access_subprog(skb) != skb->len * 2)
+ return TC_ACT_SHOT;
if (tcp) {
if (((void *)(tcp) + 20) > data_end || proto != 6)
return TC_ACT_SHOT;
--
2.23.0
