src: fix enum/integer mismatches

gcc 13 complains about type confusion:
cache.c:1178:5: warning: conflicting types for 'nft_cache_update' due to enum/integer mismatch;
have 'int(struct nft_ctx *, unsigned int,  struct list_head *, const struct nft_cache_filter *)' [-Wenum-int-mismatch]
cache.h:74:5: note: previous declaration of 'nft_cache_update' with type 'int(struct nft_ctx *, enum cmd_ops,  struct list_head *, const struct nft_cache_filter *)'

Same for:
rule.c:1915:13: warning: conflicting types for 'obj_type_name' due to enum/integer mismatch; have 'const char *(enum stmt_types)' [-Wenum-int-mismatch]
 1915 | const char *obj_type_name(enum stmt_types type)
      |             ^~~~~~~~~~~~~
expression.c:1543:24: warning: conflicting types for 'expr_ops_by_type' due to enum/integer mismatch; have 'const struct expr_ops *(uint32_t)' {aka 'const struct expr_ops *(unsigned int)'} [-Wenum-int-mismatch]
 1543 | const struct expr_ops *expr_ops_by_type(uint32_t value)
      |                        ^~~~~~~~~~~~~~~~

Convert to the stricter type (enum) where possible.

Signed-off-by: Florian Westphal <fw@strlen.de>

2 files changed, 3 insertions, 3 deletions

diff --git a/src/expression.c b/src/expression.c
index ce7fef09..9b53f43b 100644
--- a/src/expression.c
+++ b/src/expression.c
@@ -1540,7 +1540,7 @@ const struct expr_ops *expr_ops(const struct expr *e)
 	return __expr_ops_by_type(e->etype);
 }
 
-const struct expr_ops *expr_ops_by_type(uint32_t value)
+const struct expr_ops *expr_ops_by_type(enum expr_types value)
 {
 	/* value might come from unreliable source, such as "udata"
 	 * annotation of set keys.  Avoid BUG() assertion.
diff --git a/src/rule.c b/src/rule.c
index c075d027..633a5a12 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1912,7 +1912,7 @@ static const char * const obj_type_name_array[] = {
 	[NFT_OBJECT_CT_EXPECT]	= "ct expectation",
 };
 
-const char *obj_type_name(enum stmt_types type)
+const char *obj_type_name(unsigned int type)
 {
 	assert(type <= NFT_OBJECT_MAX && obj_type_name_array[type]);
 
@@ -1930,7 +1930,7 @@ static uint32_t obj_type_cmd_array[NFT_OBJECT_MAX + 1] = {
 	[NFT_OBJECT_CT_EXPECT]	= CMD_OBJ_CT_EXPECT,
 };
 
-uint32_t obj_type_to_cmd(uint32_t type)
+enum cmd_obj obj_type_to_cmd(uint32_t type)
 {
 	assert(type <= NFT_OBJECT_MAX && obj_type_cmd_array[type]);