[PATCH net-next 2/2] selftests/bpf: Add IP_TRANSPARENT and IPV6_TRANSPARENT to setget_sockopt

From: Shivaji Kant

Date: Fri Jul 31 2026 - 13:57:10 EST


Add test coverage for IP_TRANSPARENT and IPV6_TRANSPARENT socket options
in the setget_sockopt BPF selftest to verify bpf_setsockopt() and
bpf_getsockopt() helpers.

Tested-by: Anubhav Singh <anubhavsinggh@xxxxxxxxxx>
Signed-off-by: Shivaji Kant <shivajikant@xxxxxxxxxx>
---
tools/testing/selftests/bpf/progs/bpf_tracing_net.h | 2 ++
tools/testing/selftests/bpf/progs/setget_sockopt.c | 2 ++
2 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
index d8dacef37c16..58b791e03a2d 100644
--- a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
+++ b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
@@ -28,10 +28,12 @@
#define __SO_ACCEPTCON (1 << 16)

#define IP_TOS 1
+#define IP_TRANSPARENT 19

#define SOL_IPV6 41
#define IPV6_TCLASS 67
#define IPV6_AUTOFLOWLABEL 70
+#define IPV6_TRANSPARENT 75

#define TC_ACT_UNSPEC (-1)
#define TC_ACT_OK 0
diff --git a/tools/testing/selftests/bpf/progs/setget_sockopt.c b/tools/testing/selftests/bpf/progs/setget_sockopt.c
index 636a7cd8e2fa..d96e99b67aeb 100644
--- a/tools/testing/selftests/bpf/progs/setget_sockopt.c
+++ b/tools/testing/selftests/bpf/progs/setget_sockopt.c
@@ -69,12 +69,14 @@ static const struct sockopt_test sol_tcp_tests[] = {

static const struct sockopt_test sol_ip_tests[] = {
{ .opt = IP_TOS, .new = 0xe1, .expected = 0xe1, .tcp_expected = 0xe0, },
+ { .opt = IP_TRANSPARENT, .flip = 1, },
{ .opt = 0, },
};

static const struct sockopt_test sol_ipv6_tests[] = {
{ .opt = IPV6_TCLASS, .new = 0xe1, .expected = 0xe1, .tcp_expected = 0xe0, },
{ .opt = IPV6_AUTOFLOWLABEL, .flip = 1, },
+ { .opt = IPV6_TRANSPARENT, .flip = 1, },
{ .opt = 0, },
};

--
2.55.0.508.g3f0d502094-goog