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Diffstat (limited to 'tools/testing/selftests/bpf/test_tcp_hdr_options.h')
-rw-r--r--tools/testing/selftests/bpf/test_tcp_hdr_options.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_tcp_hdr_options.h b/tools/testing/selftests/bpf/test_tcp_hdr_options.h
index 6118e3ab61fc..56c9f8a3ad3d 100644
--- a/tools/testing/selftests/bpf/test_tcp_hdr_options.h
+++ b/tools/testing/selftests/bpf/test_tcp_hdr_options.h
@@ -50,6 +50,7 @@ struct linum_err {
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
+#define TCPOPT_MSS 2
#define TCPOPT_WINDOW 3
#define TCPOPT_EXP 254