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, 2 insertions, 4 deletions

diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 273eb26cd6d4..d313bfd88512 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -250,11 +250,9 @@ static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
         frh->tos = rule6->tclass;
 
         if ((rule6->dst.plen &&
-             nla_put(skb, FRA_DST, sizeof(struct in6_addr),
-                     &rule6->dst.addr)) ||
+             nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) ||
             (rule6->src.plen &&
-             nla_put(skb, FRA_SRC, sizeof(struct in6_addr),
-                     &rule6->src.addr)))
+             nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr)))
                 goto nla_put_failure;
         return 0;