netdev - [PATCH net-next v4 03/13] udp_encaps: Add new UDP

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Message-Id: <20240823201557.1794985-4-tom@herbertland.com>
Date: Fri, 23 Aug 2024 13:15:47 -0700
From: Tom Herbert <tom@...bertland.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	edumazet@...gle.com,
	netdev@...r.kernel.org,
	felipe@...anda.io,
	willemdebruijn.kernel@...il.com,
	pablo@...filter.org,
	laforge@...monks.org,
	xeb@...l.ru
Cc: Tom Herbert <tom@...bertland.com>,
	Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next v4 03/13] udp_encaps: Add new UDP_ENCAP constants

Add constants for various UDP encapsulations that are supported

Reviewed-by: Willem de Bruijn <willemb@...gle.com>
Signed-off-by: Tom Herbert <tom@...bertland.com>
---
 include/uapi/linux/udp.h | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/udp.h b/include/uapi/linux/udp.h
index 1a0fe8b151fb..bf15c4ded3e8 100644
--- a/include/uapi/linux/udp.h
+++ b/include/uapi/linux/udp.h
@@ -35,7 +35,12 @@ struct udphdr {
 #define UDP_SEGMENT	103	/* Set GSO segmentation size */
 #define UDP_GRO		104	/* This socket can receive UDP GRO packets */
 
-/* UDP encapsulation types */
+/* UDP encapsulation types
+ *
+ * Note that these are defined in UAPI since we may need to use them externally,
+ * for instance by eBPF
+ */
+#define UDP_ENCAP_NONE		0
 #define UDP_ENCAP_ESPINUDP_NON_IKE	1 /* unused  draft-ietf-ipsec-nat-t-ike-00/01 */
 #define UDP_ENCAP_ESPINUDP	2 /* draft-ietf-ipsec-udp-encaps-06 */
 #define UDP_ENCAP_L2TPINUDP	3 /* rfc2661 */
@@ -43,5 +48,17 @@ struct udphdr {
 #define UDP_ENCAP_GTP1U		5 /* 3GPP TS 29.060 */
 #define UDP_ENCAP_RXRPC		6
 #define TCP_ENCAP_ESPINTCP	7 /* Yikes, this is really xfrm encap types. */
+#define UDP_ENCAP_TIPC		8
+#define UDP_ENCAP_FOU		9
+#define UDP_ENCAP_GUE		10
+#define UDP_ENCAP_SCTP		11
+#define UDP_ENCAP_RXE		12
+#define UDP_ENCAP_PFCP		13
+#define UDP_ENCAP_WIREGUARD	14
+#define UDP_ENCAP_BAREUDP	15
+#define UDP_ENCAP_VXLAN		16
+#define UDP_ENCAP_VXLAN_GPE	17
+#define UDP_ENCAP_GENEVE	18
+#define UDP_ENCAP_AMT		19
 
 #endif /* _UAPI_LINUX_UDP_H */
-- 
2.34.1