1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _NF_REJECT_H 3 #define _NF_REJECT_H 4 5 #include <linux/types.h> 6 #include <uapi/linux/in.h> 7 8 static inline bool nf_reject_verify_csum(__u8 proto) 9 { 10 /* Skip protocols that don't use 16-bit one's complement checksum 11 * of the entire payload. 12 */ 13 switch (proto) { 14 /* Protocols with other integrity checks. */ 15 case IPPROTO_AH: 16 case IPPROTO_ESP: 17 case IPPROTO_SCTP: 18 19 /* Protocols with partial checksums. */ 20 case IPPROTO_UDPLITE: 21 case IPPROTO_DCCP: 22 23 /* Protocols with optional checksums. */ 24 case IPPROTO_GRE: 25 return false; 26 } 27 return true; 28 } 29 30 #endif /* _NF_REJECT_H */ 31