Older GCC (<4.8) isn't smart enough to optimize !__builtin_constant_p()
branch in bpf_htons.
I recently fixed it for pkt_v4 and pkt_v6 in commit a0517a0f7ef23
("selftests/bpf: use __bpf_constant_htons in test_prog.c"), but later
added another bunch of bpf_htons in commit bf0f0fd939451 ("selftests/bpf:
add simple BPF_PROG_TEST_RUN examples for flow dissector").
Fixes: bf0f0fd939451 ("selftests/bpf: add simple BPF_PROG_TEST_RUN examples for flow dissector")
Signed-off-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
---
tools/testing/selftests/bpf/test_progs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index c59d2e015d16..87cde42559f7 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -1954,7 +1954,7 @@ static struct bpf_flow_keys pkt_v4_flow_keys = {
.thoff = sizeof(struct iphdr),
.addr_proto = ETH_P_IP,
.ip_proto = IPPROTO_TCP,
- .n_proto = bpf_htons(ETH_P_IP),
+ .n_proto = __bpf_constant_htons(ETH_P_IP),
};
static struct bpf_flow_keys pkt_v6_flow_keys = {
@@ -1962,7 +1962,7 @@ static struct bpf_flow_keys pkt_v6_flow_keys = {
.thoff = sizeof(struct ipv6hdr),
.addr_proto = ETH_P_IPV6,
.ip_proto = IPPROTO_TCP,
- .n_proto = bpf_htons(ETH_P_IPV6),
+ .n_proto = __bpf_constant_htons(ETH_P_IPV6),
};
static void test_flow_dissector(void)
--
2.21.0.rc2.261.ga7da99ff1b-goog
