From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 17 May 2022 18:15:57 +0000 (+0200)
Subject: netlink: add NLA_F_NESTED to all nested attributes
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b5b2ba09c4f1c8b3c21580aea7223edc2f5e92be;p=project%2Flibnl-tiny.git

netlink: add NLA_F_NESTED to all nested attributes

Newer generic netlink APIs (e.g. wireguard) require this to be able to parse
nested attributes

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/include/netlink/attr.h b/include/netlink/attr.h
index bcfbf07..3e3047f 100644
--- a/include/netlink/attr.h
+++ b/include/netlink/attr.h
@@ -495,7 +495,7 @@ static inline struct nlattr *nla_nest_start(struct nl_msg *msg, int attrtype)
 {
 	struct nlattr *start = (struct nlattr *) nlmsg_tail(msg->nm_nlh);
 
-	if (nla_put(msg, attrtype, 0, NULL) < 0)
+	if (nla_put(msg, attrtype | NLA_F_NESTED, 0, NULL) < 0)
 		return NULL;
 
 	return start;
diff --git a/include/netlink/netlink-kernel.h b/include/netlink/netlink-kernel.h
index a0f5535..026a914 100644
--- a/include/netlink/netlink-kernel.h
+++ b/include/netlink/netlink-kernel.h
@@ -175,6 +175,8 @@ struct nlmsghdr
 
 /** @} */
 
+#define NLA_F_NESTED		(1 << 15)
+
 /**
  * Netlink error message
  * @ingroup msg