From e02bd59c4009bedba89da88b199e715441975439 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Fri, 10 Mar 2017 18:13:51 +0100 Subject: 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 Signed-off-by: Pablo Neira Ayuso --- include/exthdr.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/exthdr.h') 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); -- cgit v1.2.3