exthdr: store offset for later use

Its possible that we cannot find the template without also
considering an implicit mask.  For this we need to store the offset.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/exthdr.c b/src/exthdr.c
index 9ed0b6ac..512de0ae 100644
--- a/src/exthdr.c
+++ b/src/exthdr.c
@@ -37,6 +37,7 @@ static void exthdr_expr_clone(struct expr *new, const struct expr *expr)
 {
 	new->exthdr.desc = expr->exthdr.desc;
 	new->exthdr.tmpl = expr->exthdr.tmpl;
+	new->exthdr.offset = expr->exthdr.offset;
 }
 
 static const struct expr_ops exthdr_expr_ops = {
@@ -86,6 +87,7 @@ void exthdr_init_raw(struct expr *expr, uint8_t type,
 	assert(expr->ops->type == EXPR_EXTHDR);
 
 	expr->len = len;
+	expr->exthdr.offset = offset;
 	expr->exthdr.desc = exthdr_protocols[type];
 	assert(expr->exthdr.desc != NULL);