unix: add missing NFT_PAYLOAD_* consts on linux

Change-Id: Id222e11029596d2ea2679e065780171ed3c7708a
GitHub-Last-Rev: 649d64b
GitHub-Pull-Request: #250
Reviewed-on: https://go-review.googlesource.com/c/sys/+/681435
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Author: zsien

unix/linux/types.go

@@ -2293,8 +2293,11 @@ const (
 	NFT_PAYLOAD_LL_HEADER             = C.NFT_PAYLOAD_LL_HEADER
 	NFT_PAYLOAD_NETWORK_HEADER        = C.NFT_PAYLOAD_NETWORK_HEADER
 	NFT_PAYLOAD_TRANSPORT_HEADER      = C.NFT_PAYLOAD_TRANSPORT_HEADER
+	NFT_PAYLOAD_INNER_HEADER          = C.NFT_PAYLOAD_INNER_HEADER
+	NFT_PAYLOAD_TUN_HEADER            = C.NFT_PAYLOAD_TUN_HEADER
 	NFT_PAYLOAD_CSUM_NONE             = C.NFT_PAYLOAD_CSUM_NONE
 	NFT_PAYLOAD_CSUM_INET             = C.NFT_PAYLOAD_CSUM_INET
+	NFT_PAYLOAD_CSUM_SCTP             = C.NFT_PAYLOAD_CSUM_SCTP
 	NFT_PAYLOAD_L4CSUM_PSEUDOHDR      = C.NFT_PAYLOAD_L4CSUM_PSEUDOHDR
 	NFTA_PAYLOAD_UNSPEC               = C.NFTA_PAYLOAD_UNSPEC
 	NFTA_PAYLOAD_DREG                 = C.NFTA_PAYLOAD_DREG