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authorJiri Benc <jbenc@redhat.com>2015-03-29 16:59:25 +0200
committerDavid S. Miller <davem@davemloft.net>2015-03-31 13:58:35 -0400
commit930345ea630405aa6e6f42efcb149c3f360a6b67 (patch)
treec88d0858785c246038fddac3ca51571b371416b0 /include/net/netlink.h
parent15e318bdc6dfb82914c82fb7ad00badaa8387d8e (diff)
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netlink: implement nla_put_in_addr and nla_put_in6_addr
IP addresses are often stored in netlink attributes. Add generic functions to do that. For nla_put_in_addr, it would be nicer to pass struct in_addr but this is not used universally throughout the kernel, in way too many places __be32 is used to store IPv4 address. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netlink.h')
-rw-r--r--include/net/netlink.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h
index e010ee8da41d..17fc76e5b05e 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -4,6 +4,7 @@
#include <linux/types.h>
#include <linux/netlink.h>
#include <linux/jiffies.h>
+#include <linux/in6.h>
/* ========================================================================
* Netlink Messages and Attributes Interface (As Seen On TV)
@@ -105,6 +106,8 @@
* nla_put_string(skb, type, str) add string attribute to skb
* nla_put_flag(skb, type) add flag attribute to skb
* nla_put_msecs(skb, type, jiffies) add msecs attribute to skb
+ * nla_put_in_addr(skb, type, addr) add IPv4 address attribute to skb
+ * nla_put_in6_addr(skb, type, addr) add IPv6 address attribute to skb
*
* Nested Attributes Construction:
* nla_nest_start(skb, type) start a nested attribute
@@ -957,6 +960,32 @@ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
}
/**
+ * nla_put_in_addr - Add an IPv4 address netlink attribute to a socket
+ * buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @addr: IPv4 address
+ */
+static inline int nla_put_in_addr(struct sk_buff *skb, int attrtype,
+ __be32 addr)
+{
+ return nla_put_be32(skb, attrtype, addr);
+}
+
+/**
+ * nla_put_in6_addr - Add an IPv6 address netlink attribute to a socket
+ * buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @addr: IPv6 address
+ */
+static inline int nla_put_in6_addr(struct sk_buff *skb, int attrtype,
+ const struct in6_addr *addr)
+{
+ return nla_put(skb, attrtype, sizeof(*addr), addr);
+}
+
+/**
* nla_get_u32 - return payload of u32 attribute
* @nla: u32 netlink attribute
*/