linux-kernel - [PATCH net-next 1/2] net: ethtool: add VxLAN to the NFC API

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Date:   Wed, 17 Aug 2022 22:35:37 +0800
From:   Guangbin Huang <huangguangbin2@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <idosch@...dia.com>,
        <linux@...pel-privat.de>, <mkubecek@...e.cz>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <lipeng321@...wei.com>, <shenjian15@...wei.com>,
        <huangguangbin2@...wei.com>
Subject: [PATCH net-next 1/2] net: ethtool: add VxLAN to the NFC API

To support for steering VxLAN flows using the ethtool NFC interface, this
patch adds flow specifications for vxlan4(VxLAN with inner IPv4) and vxlan6
(VxLAN with inner IPv6).

Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
---
 include/uapi/linux/ethtool.h | 48 ++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 2d5741fd44bb..687c4b5e7bc6 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -931,6 +931,28 @@ struct ethtool_usrip4_spec {
 	__u8    proto;
 };
 
+/**
+ * struct ethtool_vxlan4_spec - general flow specification for VxLAN IPv4
+ * @vni: VxLAN network identifier
+ * @dst: Inner destination eth addr
+ * @src: Inner source eth addr
+ * @eth_type: Inner ethernet type
+ * @tos: Inner type-of-service
+ * @l4_proto: Inner transport protocol number
+ * @ip4src: Inner source host
+ * @ip4dst: Inner destination host
+ */
+struct ethtool_vxlan4_spec {
+	__be32	vni;
+	__u8	dst[ETH_ALEN];
+	__u8	src[ETH_ALEN];
+	__be16	eth_type;
+	__u8	tos;
+	__u8	l4_proto;
+	__be32	ip4src;
+	__be32	ip4dst;
+};
+
 /**
  * struct ethtool_tcpip6_spec - flow specification for TCP/IPv6 etc.
  * @ip6src: Source host
@@ -981,6 +1003,28 @@ struct ethtool_usrip6_spec {
 	__u8    l4_proto;
 };
 
+/**
+ * struct ethtool_vxlan6_spec - general flow specification for VxLAN IPv6
+ * @vni: VxLAN network identifier
+ * @dst: Inner destination eth addr
+ * @src: Inner source eth addr
+ * @eth_type: Inner ethernet type
+ * @tclass: Inner traffic Class
+ * @l4_proto: Inner transport protocol number
+ * @ip6src: Inner source host
+ * @ip6dst: Inner destination host
+ */
+struct ethtool_vxlan6_spec {
+	__be32	vni;
+	__u8	dst[ETH_ALEN];
+	__u8	src[ETH_ALEN];
+	__be16	eth_type;
+	__u8	tclass;
+	__u8	l4_proto;
+	__be32	ip6src[4];
+	__be32	ip6dst[4];
+};
+
 union ethtool_flow_union {
 	struct ethtool_tcpip4_spec		tcp_ip4_spec;
 	struct ethtool_tcpip4_spec		udp_ip4_spec;
@@ -988,12 +1032,14 @@ union ethtool_flow_union {
 	struct ethtool_ah_espip4_spec		ah_ip4_spec;
 	struct ethtool_ah_espip4_spec		esp_ip4_spec;
 	struct ethtool_usrip4_spec		usr_ip4_spec;
+	struct ethtool_vxlan4_spec		vxlan_ip4_spec;
 	struct ethtool_tcpip6_spec		tcp_ip6_spec;
 	struct ethtool_tcpip6_spec		udp_ip6_spec;
 	struct ethtool_tcpip6_spec		sctp_ip6_spec;
 	struct ethtool_ah_espip6_spec		ah_ip6_spec;
 	struct ethtool_ah_espip6_spec		esp_ip6_spec;
 	struct ethtool_usrip6_spec		usr_ip6_spec;
+	struct ethtool_vxlan6_spec		vxlan_ip6_spec;
 	struct ethhdr				ether_spec;
 	__u8					hdata[52];
 };
@@ -1900,6 +1946,8 @@ static inline int ethtool_validate_duplex(__u8 duplex)
 #define	IPV4_FLOW	0x10	/* hash only */
 #define	IPV6_FLOW	0x11	/* hash only */
 #define	ETHER_FLOW	0x12	/* spec only (ether_spec) */
+#define	VXLAN_V4_FLOW	0x13	/* spec only (vxlan_ip4_spec) */
+#define	VXLAN_V6_FLOW	0x14	/* spec only (vxlan_ip6_spec) */
 /* Flag to enable additional fields in struct ethtool_rx_flow_spec */
 #define	FLOW_EXT	0x80000000
 #define	FLOW_MAC_EXT	0x40000000
-- 
2.33.0