3 files changed, 17 insertions, 2 deletions
diff --git a/tools/net/ynl/lib/ynl-priv.h b/tools/net/ynl/lib/ynl-priv.h
index 29481989ea76..ced7dce44efb 100644
--- a/tools/net/ynl/lib/ynl-priv.h
+++ b/tools/net/ynl/lib/ynl-priv.h
@@ -313,7 +313,7 @@ ynl_attr_put_str(struct nlmsghdr *nlh, unsigned int attr_type, const char *str)
 	struct nlattr *attr;
 	size_t len;
 
-	len = strlen(str);
+	len = strlen(str) + 1;
 	if (__ynl_attr_put_overflow(nlh, len))
 		return;
 
@@ -321,7 +321,7 @@ ynl_attr_put_str(struct nlmsghdr *nlh, unsigned int attr_type, const char *str)
 	attr->nla_type = attr_type;
 
 	strcpy((char *)ynl_attr_data(attr), str);
-	attr->nla_len = NLA_HDRLEN + NLA_ALIGN(len);
+	attr->nla_len = NLA_HDRLEN + len;
 
 	nlh->nlmsg_len += NLMSG_ALIGN(attr->nla_len);
 }
diff --git a/tools/net/ynl/pyynl/ethtool.py b/tools/net/ynl/pyynl/ethtool.py
index 9b523cbb3568..fd0f6b8d54d1 100755
--- a/tools/net/ynl/pyynl/ethtool.py
+++ b/tools/net/ynl/pyynl/ethtool.py
@@ -44,6 +44,9 @@ def print_field(reply, *desc):
     Pretty-print a set of fields from the reply. desc specifies the
     fields and the optional type (bool/yn).
     """
+    if not reply:
+        return
+
     if len(desc) == 0:
         return print_field(reply, *zip(reply.keys(), reply.keys()))
 
diff --git a/tools/net/ynl/pyynl/ynl_gen_c.py b/tools/net/ynl/pyynl/ynl_gen_c.py
index 58086b101057..aadeb3abcad8 100755
--- a/tools/net/ynl/pyynl/ynl_gen_c.py
+++ b/tools/net/ynl/pyynl/ynl_gen_c.py
@@ -861,6 +861,18 @@ class TypeIndexedArray(Type):
         return [f"{member} = {self.c_name};",
                 f"{presence} = n_{self.c_name};"]
 
+    def free_needs_iter(self):
+        return self.sub_type == 'nest'
+
+    def _free_lines(self, ri, var, ref):
+        lines = []
+        if self.sub_type == 'nest':
+            lines += [
+                f"for (i = 0; i < {var}->{ref}_count.{self.c_name}; i++)",
+                f'{self.nested_render_name}_free(&{var}->{ref}{self.c_name}[i]);',
+            ]
+        lines += f"free({var}->{ref}{self.c_name});",
+        return lines
 
 class TypeNestTypeValue(Type):
     def _complex_member_type(self, ri):