From 7a443259de1c149a08a3e9f905e1fc2508cfaf0e Mon Sep 17 00:00:00 2001
From: Kaixi Fan <fankaixi.li@bytedance.com>
Date: Sat, 30 Apr 2022 15:48:42 +0800
Subject: [PATCH] bpf: Add source ip in "struct bpf_tunnel_key"

Add tunnel source ip field in "struct bpf_tunnel_key". Add related code
to set and get tunnel source field.

Signed-off-by: Kaixi Fan <fankaixi.li@bytedance.com>
Link: https://lore.kernel.org/r/20220430074844.69214-2-fankaixi.li@bytedance.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
 include/uapi/linux/bpf.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 444fe6f..95a3d1f 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -5604,6 +5604,10 @@ struct bpf_tunnel_key {
 	__u8 tunnel_ttl;
 	__u16 tunnel_ext;	/* Padding, future use. */
 	__u32 tunnel_label;
+	union {
+		__u32 local_ipv4;
+		__u32 local_ipv6[4];
+	};
 };
 
 /* user accessible mirror of in-kernel xfrm_state.