From: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
backport/backport-include/linux/tcp.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
create mode 100644 backport/backport-include/linux/tcp.h
diff --git a/backport/backport-include/linux/tcp.h b/backport/backport-include/linux/tcp.h
new file mode 100644
index 00000000..2483cbeb
--- /dev/null
+++ b/backport/backport-include/linux/tcp.h
@@ -0,0 +1,14 @@
+#ifndef __BACKPORT_LINUX_TCP_H
+#define __BACKPORT_LINUX_TCP_H
+
+#include_next <linux/tcp.h>
+#include <linux/version.h>
+
+#if LINUX_VERSION_IS_LESS(6,0,0)
+static inline int skb_tcp_all_headers(const struct sk_buff *skb)
+{
+ return skb_transport_offset(skb) + tcp_hdrlen(skb);
+}
+#endif
+
+#endif
--
2.45.2
