sys/linux: add lwtunnel_encap_ip description

https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/lwtunnel.h#L102
https://elixir.bootlin.com/linux/latest/source/net/ipv4/ip_tunnel_core.c#L219
The policies added have a suffix (_lwt), because they already exist in syzkaller
with the kernel name. An example of a union with the same name described in
sys/linux/socket_netlink_route_sched.txt:
https://elixir.bootlin.com/linux/latest/source/net/sched/cls_flower.c#L709

9 files changed, 201 insertions, 0 deletions

diff --git a/sys/linux/socket_netlink_route.txt b/sys/linux/socket_netlink_route.txt
index 122330e9a..3563a756c 100644
--- a/sys/linux/socket_netlink_route.txt
+++ b/sys/linux/socket_netlink_route.txt
@@ -972,9 +972,42 @@ lwtunnel_policy [
 	MPLS_IPTUNNEL_DST	nlattr[MPLS_IPTUNNEL_DST, array[mpls_label]]
 	MPLS_IPTUNNEL_TTL	nlattr[MPLS_IPTUNNEL_TTL, int8]
 
+	LWTUNNEL_IP_ID		nlattr[LWTUNNEL_IP_ID, int64be]
+	LWTUNNEL_IP_DST		nlattr[LWTUNNEL_IP_DST, ipv4_addr]
+	LWTUNNEL_IP_SRC		nlattr[LWTUNNEL_IP_SRC, ipv4_addr]
+	LWTUNNEL_IP_TTL		nlattr[LWTUNNEL_IP_TTL, int8]
+	LWTUNNEL_IP_TOS		nlattr[LWTUNNEL_IP_TOS, int8]
+	LWTUNNEL_IP_FLAGS	nlattr[LWTUNNEL_IP_FLAGS, flags[lwtunnel_ip_flags, int16be]]
+	LWTUNNEL_IP_OPTS	nlnest[LWTUNNEL_IP_OPTS, ip_opts_policy]
+
 	RPL_IPTUNNEL_SRH	nlattr[RPL_IPTUNNEL_SRH, ipv6_rpl_sr_hdr]
 ] [varlen]
 
+lwtunnel_ip_flags = TUNNEL_GENEVE_OPT, TUNNEL_VXLAN_OPT, TUNNEL_ERSPAN_OPT
+
+ip_opts_policy [
+	LWTUNNEL_IP_OPTS_GENEVE	nlnest[LWTUNNEL_IP_OPTS_GENEVE, geneve_opt_policy_lwt]
+	LWTUNNEL_IP_OPTS_VXLAN	nlnest[LWTUNNEL_IP_OPTS_VXLAN, vxlan_opt_policy_lwt]
+	LWTUNNEL_IP_OPTS_ERSPAN	nlnest[LWTUNNEL_IP_OPTS_ERSPAN, erspan_opt_policy_lwt]
+] [varlen]
+
+geneve_opt_policy_lwt [
+	LWTUNNEL_IP_OPT_GENEVE_CLASS	nlattr[LWTUNNEL_IP_OPT_GENEVE_CLASS, int16be]
+	LWTUNNEL_IP_OPT_GENEVE_TYPE	nlattr[LWTUNNEL_IP_OPT_GENEVE_TYPE, int8]
+	LWTUNNEL_IP_OPT_GENEVE_DATA	nlattr[LWTUNNEL_IP_OPT_GENEVE_DATA, array[int8, 0:128]]
+] [varlen]
+
+vxlan_opt_policy_lwt [
+	LWTUNNEL_IP_OPT_VXLAN_GBP	nlattr[LWTUNNEL_IP_OPT_VXLAN_GBP, int32]
+] [varlen]
+
+erspan_opt_policy_lwt [
+	LWTUNNEL_IP_OPT_ERSPAN_VER	nlattr[LWTUNNEL_IP_OPT_ERSPAN_VER, int8[1:2]]
+	LWTUNNEL_IP_OPT_ERSPAN_INDEX	nlattr[LWTUNNEL_IP_OPT_ERSPAN_INDEX, int32be]
+	LWTUNNEL_IP_OPT_ERSPAN_DIR	nlattr[LWTUNNEL_IP_OPT_ERSPAN_DIR, int8]
+	LWTUNNEL_IP_OPT_ERSPAN_HWID	nlattr[LWTUNNEL_IP_OPT_ERSPAN_HWID, int8]
+] [varlen]
+
 ipv6_rpl_sr_hdr {
 	nexthdr		int8
 	hdrlen		len[parent, int8]
diff --git a/sys/linux/socket_netlink_route_386.const b/sys/linux/socket_netlink_route_386.const
index 0af9ea350..378a0f6b1 100644
--- a/sys/linux/socket_netlink_route_386.const
+++ b/sys/linux/socket_netlink_route_386.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_amd64.const b/sys/linux/socket_netlink_route_amd64.const
index 1985dce56..05e415987 100644
--- a/sys/linux/socket_netlink_route_amd64.const
+++ b/sys/linux/socket_netlink_route_amd64.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_arm.const b/sys/linux/socket_netlink_route_arm.const
index 9b1a2b725..d6c4ae94d 100644
--- a/sys/linux/socket_netlink_route_arm.const
+++ b/sys/linux/socket_netlink_route_arm.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_arm64.const b/sys/linux/socket_netlink_route_arm64.const
index 91273fa81..8f32a23c9 100644
--- a/sys/linux/socket_netlink_route_arm64.const
+++ b/sys/linux/socket_netlink_route_arm64.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_mips64le.const b/sys/linux/socket_netlink_route_mips64le.const
index a3a004791..6f101137b 100644
--- a/sys/linux/socket_netlink_route_mips64le.const
+++ b/sys/linux/socket_netlink_route_mips64le.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_ppc64le.const b/sys/linux/socket_netlink_route_ppc64le.const
index add16a6b2..81d281b4e 100644
--- a/sys/linux/socket_netlink_route_ppc64le.const
+++ b/sys/linux/socket_netlink_route_ppc64le.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_riscv64.const b/sys/linux/socket_netlink_route_riscv64.const
index 91273fa81..8f32a23c9 100644
--- a/sys/linux/socket_netlink_route_riscv64.const
+++ b/sys/linux/socket_netlink_route_riscv64.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 64
+TUNNEL_GENEVE_OPT = 8
+TUNNEL_VXLAN_OPT = 16
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2
diff --git a/sys/linux/socket_netlink_route_s390x.const b/sys/linux/socket_netlink_route_s390x.const
index 0af9ea350..b19fafbec 100644
--- a/sys/linux/socket_netlink_route_s390x.const
+++ b/sys/linux/socket_netlink_route_s390x.const
@@ -392,6 +392,24 @@ LWTUNNEL_ENCAP_NONE = 0
 LWTUNNEL_ENCAP_RPL = 8
 LWTUNNEL_ENCAP_SEG6 = 5
 LWTUNNEL_ENCAP_SEG6_LOCAL = 7
+LWTUNNEL_IP_DST = 2
+LWTUNNEL_IP_FLAGS = 6
+LWTUNNEL_IP_ID = 1
+LWTUNNEL_IP_OPTS = 8
+LWTUNNEL_IP_OPTS_ERSPAN = 3
+LWTUNNEL_IP_OPTS_GENEVE = 1
+LWTUNNEL_IP_OPTS_VXLAN = 2
+LWTUNNEL_IP_OPT_ERSPAN_DIR = 3
+LWTUNNEL_IP_OPT_ERSPAN_HWID = 4
+LWTUNNEL_IP_OPT_ERSPAN_INDEX = 2
+LWTUNNEL_IP_OPT_ERSPAN_VER = 1
+LWTUNNEL_IP_OPT_GENEVE_CLASS = 1
+LWTUNNEL_IP_OPT_GENEVE_DATA = 3
+LWTUNNEL_IP_OPT_GENEVE_TYPE = 2
+LWTUNNEL_IP_OPT_VXLAN_GBP = 1
+LWTUNNEL_IP_SRC = 3
+LWTUNNEL_IP_TOS = 5
+LWTUNNEL_IP_TTL = 4
 MACVLAN_MACADDR_ADD = 0
 MACVLAN_MACADDR_DEL = 1
 MACVLAN_MACADDR_FLUSH = 2
@@ -559,6 +577,9 @@ TUNNEL_ENCAP_FOU = 1
 TUNNEL_ENCAP_GUE = 2
 TUNNEL_ENCAP_MPLS = 3
 TUNNEL_ENCAP_NONE = 0
+TUNNEL_ERSPAN_OPT = 16384
+TUNNEL_GENEVE_OPT = 2048
+TUNNEL_VXLAN_OPT = 4096
 VETH_INFO_PEER = 1
 VLAN_FLAG_BRIDGE_BINDING = 16
 VLAN_FLAG_GVRP = 2