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>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index 22b18c145c92..c0c5b5519f45 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -648,10 +648,12 @@ static int __ipv4_tun_to_nlattr(struct sk_buff *skb,
             nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id))
                 return -EMSGSIZE;
         if (output->ipv4_src &&
-            nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, output->ipv4_src))
+            nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC,
+                            output->ipv4_src))
                 return -EMSGSIZE;
         if (output->ipv4_dst &&
-            nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, output->ipv4_dst))
+            nla_put_in_addr(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST,
+                            output->ipv4_dst))
                 return -EMSGSIZE;
         if (output->ipv4_tos &&
             nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))