expr: Check output type once and for all

There is but a single supported output type left, so check it in expr.c
and drop all the single option switch statements in individual
expressions.

Since the parameter is now unused (and to ensure code correctness), drop
'type' parameter from struct expr_ops' snprintf callback.

Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 2 insertions, 17 deletions

diff --git a/src/expr/xfrm.c b/src/expr/xfrm.c
index 0502b53..d7586ce 100644
--- a/src/expr/xfrm.c
+++ b/src/expr/xfrm.c
@@ -172,8 +172,8 @@ static const char *xfrmdir2str(uint8_t dir)
 }
 
 static int
-nftnl_expr_xfrm_snprintf_default(char *buf, size_t size,
-			       const struct nftnl_expr *e)
+nftnl_expr_xfrm_snprintf(char *buf, size_t size,
+			 uint32_t flags, const struct nftnl_expr *e)
 {
 	struct nftnl_expr_xfrm *x = nftnl_expr_data(e);
 	int ret, remain = size, offset = 0;
@@ -188,21 +188,6 @@ nftnl_expr_xfrm_snprintf_default(char *buf, size_t size,
 	return offset;
 }
 
-static int
-nftnl_expr_xfrm_snprintf(char *buf, size_t len, uint32_t type,
-			 uint32_t flags, const struct nftnl_expr *e)
-{
-	switch (type) {
-	case NFTNL_OUTPUT_DEFAULT:
-		return nftnl_expr_xfrm_snprintf_default(buf, len, e);
-	case NFTNL_OUTPUT_XML:
-	case NFTNL_OUTPUT_JSON:
-	default:
-		break;
-	}
-	return -1;
-}
-
 struct expr_ops expr_ops_xfrm = {
 	.name		= "xfrm",
 	.alloc_len	= sizeof(struct nftnl_expr_xfrm),