osf: add ttl option support

Add support for ttl option in "osf" expression. Example:

table ip foo {
	chain bar {
		type filter hook input priority filter; policy accept;
		osf ttl skip name "Linux"
	}
}

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/expression.h b/include/expression.h
index d6977c3a..f018c958 100644
--- a/include/expression.h
+++ b/include/expression.h
@@ -345,6 +345,10 @@ struct expr {
 			uint8_t		direction;
 			uint8_t		spnum;
 		} xfrm;
+		struct {
+			/* EXPR_OSF */
+			uint8_t			ttl;
+		} osf;
 	};
 };