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-rw-r--r--include/net/netlink.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h
index 29e0db940382..82e07e272290 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -612,6 +612,22 @@ static inline int nlmsg_len(const struct nlmsghdr *nlh)
}
/**
+ * nlmsg_payload - message payload if the data fits in the len
+ * @nlh: netlink message header
+ * @len: struct length
+ *
+ * Returns: The netlink message payload/data if the length is sufficient,
+ * otherwise NULL.
+ */
+static inline void *nlmsg_payload(const struct nlmsghdr *nlh, size_t len)
+{
+ if (nlh->nlmsg_len < nlmsg_msg_size(len))
+ return NULL;
+
+ return nlmsg_data(nlh);
+}
+
+/**
* nlmsg_attrdata - head of attributes data
* @nlh: netlink message header
* @hdrlen: length of family specific header