diff options
author | Phil Sutter <phil@nwl.cc> | 2017-03-10 18:13:51 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-03-10 19:01:21 +0100 |
commit | e02bd59c4009bedba89da88b199e715441975439 (patch) | |
tree | 89dd9f1959adf4065d23da80053e119fe1483500 /include | |
parent | 627be570eff8f05849614a257e6fa45c744f4dbd (diff) |
exthdr: Implement existence check
This allows to check for existence of an IPv6 extension or TCP
option header by using the following syntax:
| exthdr frag exists
| tcpopt window exists
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/exthdr.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/exthdr.h b/include/exthdr.h index c7f806eb..a2647ee1 100644 --- a/include/exthdr.h +++ b/include/exthdr.h @@ -21,6 +21,8 @@ extern struct expr *exthdr_expr_alloc(const struct location *loc, const struct exthdr_desc *desc, uint8_t type); +extern const struct exthdr_desc *exthdr_find_proto(uint8_t proto); + extern void exthdr_init_raw(struct expr *expr, uint8_t type, unsigned int offset, unsigned int len, enum nft_exthdr_op op, uint32_t flags); |