diff options
Diffstat (limited to 'include/net/netfilter/nf_reject.h')
| -rw-r--r-- | include/net/netfilter/nf_reject.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_reject.h b/include/net/netfilter/nf_reject.h new file mode 100644 index 000000000000..221f877f29d1 --- /dev/null +++ b/include/net/netfilter/nf_reject.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _NF_REJECT_H +#define _NF_REJECT_H + +static inline bool nf_reject_verify_csum(__u8 proto) +{ + /* Skip protocols that don't use 16-bit one's complement checksum + * of the entire payload. + */ + switch (proto) { + /* Protocols with other integrity checks. */ + case IPPROTO_AH: + case IPPROTO_ESP: + case IPPROTO_SCTP: + + /* Protocols with partial checksums. */ + case IPPROTO_UDPLITE: + case IPPROTO_DCCP: + + /* Protocols with optional checksums. */ + case IPPROTO_GRE: + return false; + } + return true; +} + +#endif /* _NF_REJECT_H */ |