[PATCH net-next v5 02/22] netlink: introduce nla_put_bitfield32()

From: Michal Kubecek <mkubecek@suse.cz>
To: David Miller <davem@davemloft.net>, netdev@vger.kernel.org
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>,
	Jiri Pirko <jiri@resnulli.us>, Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	John Linville <linville@tuxdriver.com>,
	Stephen Hemminger <stephen@networkplumber.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next v5 02/22] netlink: introduce nla_put_bitfield32()
Date: Mon, 25 Mar 2019 18:08:00 +0100 (CET)	[thread overview]
Message-ID: <94ec4068f6767acabf6bd795818f5b7ce2dae00b.1553532199.git.mkubecek@suse.cz> (raw)
In-Reply-To: <cover.1553532199.git.mkubecek@suse.cz>

Similar to other data types, this helper puts NLA_BITFIELD32 attribute into
a netlink message. It takes separate value and selector arguments, if there
is a struct nla_bitfield32 already, one can use nla_put().

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
---
 include/net/netlink.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/net/netlink.h b/include/net/netlink.h
index 23f27b0b3cef..bc0497076bec 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -1211,6 +1211,21 @@ static inline int nla_put_in6_addr(struct sk_buff *skb, int attrtype,
 	return nla_put(skb, attrtype, sizeof(*addr), addr);
 }
 
+/**
+ * nla_put_bitfield32 - Add a bitfield32 value/selector attribute to
+ * a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @value: 32-bit value bitmap
+ * @selector: 32-bit selector bitmap
+ */
+static inline int nla_put_bitfield32(struct sk_buff *skb, int attrtype,
+				     u32 value, u32 selector)
+{
+	struct nla_bitfield32 tmp = { .value = value, .selector = selector };
+
+	return nla_put(skb, attrtype, sizeof(tmp), &tmp);
+}
+
 /**
  * nla_get_u32 - return payload of u32 attribute
  * @nla: u32 netlink attribute
-- 
2.21.0

