optimize: add xfrm expression support

Extend expr_cmp() to compare xfrm expressions used in relational.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/optimize.c b/src/optimize.c
index 04c92575..919f8013 100644
--- a/src/optimize.c
+++ b/src/optimize.c
@@ -87,6 +87,12 @@ static bool __expr_cmp(const struct expr *expr_a, const struct expr *expr_b)
 		if (expr_a->osf.flags != expr_b->osf.flags)
 			return false;
 		break;
+	case EXPR_XFRM:
+		if (expr_a->xfrm.key != expr_b->xfrm.key)
+			return false;
+		if (expr_a->xfrm.direction != expr_b->xfrm.direction)
+			return false;
+		break;
 	default:
 		return false;
 	}