Prepare for submsg

Prepare for construting Struct that represent sub messages.

Signed-off-by: Zibo Gong <[email protected]>

Author: zb-gong

lib/ynl-priv.h

@@ -27,6 +27,7 @@ enum ynl_policy_type {
   YNL_PT_UINT,
   YNL_PT_NUL_STR,
   YNL_PT_BITFIELD32,
+  YNL_PT_SUBMSG,
 };
 
 enum ynl_parse_result {
@@ -46,6 +47,9 @@ typedef int (
 struct ynl_policy_attr {
   const char* name;
   enum ynl_policy_type type;
+  __u8 is_submsg;
+  __u8 is_selector;
+  __u16 selector_type;
   unsigned int len;
   struct ynl_policy_nest* nest;
 };
@@ -103,6 +107,8 @@ struct nlmsghdr*
 ynl_gemsg_start_dump(struct ynl_sock* ys, __u32 id, __u8 cmd, __u8 version);
 
 int ynl_attr_validate(struct ynl_parse_arg* yarg, const struct nlattr* attr);
+int ynl_submsg_failed(struct ynl_parse_arg *yarg, const char *field_name,
+		      const char *sel_name);
 
 /* YNL specific helpers used by the auto-generated code */
 

lib/ynl.c

@@ -455,6 +455,15 @@ int ynl_attr_validate(struct ynl_parse_arg* yarg, const struct nlattr* attr) {
   return 0;
 }
 
+int ynl_submsg_failed(struct ynl_parse_arg *yarg, const char *field_name,
+		      const char *sel_name)
+{
+	yerr(yarg->ys, YNL_ERROR_SUBMSG_KEY,
+	     "Parsing error: Sub-message key not set (msg %s, key %s)",
+	     field_name, sel_name);
+	return YNL_PARSE_CB_ERROR;
+}
+
 /* Generic code */
 
 static void ynl_err_reset(struct ynl_sock* ys) {

lib/ynl.h

@@ -22,6 +22,7 @@ enum ynl_error_code {
   YNL_ERROR_INV_RESP,
   YNL_ERROR_INPUT_INVALID,
   YNL_ERROR_INPUT_TOO_BIG,
+  YNL_ERROR_SUBMSG_KEY,
 };
 
 /**